Low-pollution combustion chamber with premixed and pre-evaporated precombustion part

The invention relates to a low-pollution combustion chamber with a premixed and pre-evaporated precombustion part, which adopts a monocylic cavity structure and comprises a pressure diffuser, an outer receiver of a combustion chamber, an outer wall of a flame tube, an inner wall of the flame tube and a combustion chamber head, wherein all air for combustion enters the flame tube from the combustion chamber head, a grade combustion scheme is adopted and comprises a precombustion grade and a main combustion grade ; the main combustion grade adopts a premixed combustion mode, and the precombustion grade adopts a mode of combining diffusion combustion with stable rotational flow and rotational-flow premixed combustion; and the precombustion grade adopts the mode of combining the diffusion combustion and the premixed combustion, and pollutant discharge under a small working condition is reduced without influencing stable combustion. In the invention, the precombustion grade structure is simple ...

Low-pollution combustion chamber provided with premixing and pre-evaporating ring pipe

The invention relates to a low-pollution combustion chamber provided with a premixing and pre-evaporating ring pipe, which adopts a single-ring cavity structure and consists of a combustion chamber outer casing, a combustion chamber inner casing, an outer flame tube, an inner flame tube and a combustion chamber head part, wherein air used for combustion completely enters into the flame tubes from the combustion chamber head part; the scheme of fractional combustion can be adopted, and pre-combustion stage and a main-combustion stage are divided; the main-combustion stage comprises the premixing and pre-evaporating ring pipe, a main-combustion stage nozzle and a main-combustion stage swirler; fuel oil is evaporated and mixed inside the premixing and pre-evaporating ring pipe and then enters into the flame tubes after forming even mixed combustible gas, belonging to premixed combustion; a fuel nozzle is used for supplying the fuel oil for the pre-combustion stage and the main-combustion stage ...

Premixing pre-vaporization combustion chamber for main combustible stage of discrete pipe

The invention provides a premixing pre-vaporization combustion chamber for a main combustible stage of a discrete pipe. The combustion chamber is in a single annulus structure, and consists of a combustion chamber outer case, a combustion chamber inner case, a flame tube outer wall, a flame tube inner wall and a combustion chamber head, wherein combusting air completely enters a flame tube from the combustion chamber head, a staged combustion scheme, namely a pre-combustible stage and the main combustible stage, is adopted; a swirl cup is adopted in the pre-combustible stage which is of a diffusion combustion organization mode; a premixing pre-vaporization device is adopted in the main combustible stage, a main combustible stage nozzle supplies fuel axially, the fuel is vaporized in the premixing pre-vaporization device and blended with air, the uniformly mixed combustible gas enters the combustion chamber to participate in combustion, namely a premixing combustion organization mode. The ...

Integrated burner with back step precombustion stage and V-groove main combustion stage

An integrated burner with a back step precombustion stage and a V-groove main combustion stage consists of a precombustion stage and a main combustion stage, wherein the precombustion stage adopts a low-speed recirculation region produced by a back step flame holder to stabilize the flame, stable flame jet is produced at a high position of a combustion channel, and the high-temperature flame jet is propagated to a low position by using the rotating centrifugal force of a rotary engine, thereby igniting fuels of the main combustion stage arranged at the low position and providing stable ignition source for the main combustion stage; and the main combustion stage adopts a multipoint direct-injection type oil injection method, and a V-groove is added in front of the igniting to stabilize the main combustion stage so as to lead the main combustion stage to have excellent flame stability and crossed flame reliability. The integrated burner can provide stable high-position combustion source and ...

Central cavity stable fire tangential combustion chamber

Lean oil premixing and pre-evaporating combustion chamber head structure with cyclone/pre-film plate integrated primary combustion stage

The invention relates to a lean oil premixing and pre-evaporating combustion chamber head structure with a cyclone/pre-film plate integrated primary combustion stage. A central staged combustion mode is adopted for the head structure and divided into a pre-combustion stage and the primary combustion stage, the mode of combining diffusive combustion and cyclone premixing combustion is adopted for the pre-combustion stage, the mode of premixing and pre-evaporating combustion mode is adopted for the primary combustion stage, and combustion pollutants can be effectively reduced. A cyclone/pre-film plate integrated structure is adopted for the primary combustion stage, the structure is simple and reliable, first-stage fuel and second-stage fuel form oil films on the same pre-film plate and are atomized, evaporated and mixed under the action of two strands of cyclones, an even oil and gas mixture can be easily formed at an outlet of the primary combustion stage, and the combustion pollutants ...

Combustion chamber and combustor for inhibiting combustion oscillation

The invention relates to the technical field of energy and power, and provides a combustion chamber for restraining combustion oscillation and a combustor comprising the combustion chamber. The combustion chamber comprises a pre-combustion stage, a main combustion stage, a combustion chamber main body and an anti-vibration ring; the pre-combustion stage comprises a central body, and a pre-combustion stage cyclone and an interstage section which are arranged on the periphery of the central body; the main combustion stage is arranged on the periphery of the pre-combustion stage and comprises a main combustion stage cyclone and a main combustion stage outer ring. The combustion chamber main body comprises a switching section and a flame tube; the switching section is connected with the main combustion stage, the combustion chamber flame tube and the anti-vibration ring; a cooling hole is formed in the switching section and is used for cooling the anti-vibration ring; the anti-vibration ring ...

Low-emission low-rotational-flow combustion chamber head structure for aircraft engine

The invention provides a low-emission low-rotational-flow combustion chamber head structure for an airascraft engine. The low-emission low-rotational-flow combustion chamber head structure comprises a pre-burning level and a main-burning level. The pre-burning level is designed with low rotational flow, that is the gas flow is divided into two parts through an inner ring of a cyclone, one part of the flow forms jet flow with the extremely-low rotational flow strength through a current limiting plate of a center channel, and the other part of the flow forms rotational jet flow with the large rotational flow strength through an outer-side cyclone. Pre-burning level fuel is ejected from a centrifugal nozzle and then enters the combustion chamber along with pre-burning level jet flow. A pre-film type air atomizing nozzle is adopted in the main-burning level for supplying oil, the fuel is sheared and atomized by rotational jet flow, ejected by a pre-burning level external cyclone, of fuel and ...

Pre-mixing and pre-evaporation low-pollution combustion chamber with double-oil-way four-rotational-flow pre-film type main combustion stage

The invention relates to a pre-mixing and pre-evaporation low-pollution combustion chamber with a double-oil-way four-rotational-flow pre-film type main combustion stage. The combustion chamber is of a single-ring-cavity structure, and adopts a central staged combustion mode, wherein the head of the combustion chamber is divided into a preliminary combustion stage and a main combustion stage, the preliminary combustion stage adopts a mode of combining diffusive combustion with rotational-flow pre-mixing combustion, and is capable of reducing pollutant discharge under low-flow working conditions while ensuring combustion stability; the main combustion stage adopts a mode of pre-mixing and pre-evaporation combustion, and is capable of effectively reducing combustion pollutants. The oil way of the main combustion stage is divided into two stages, fuel oil in each stage forms an oil film on a pre-film plate, and the oil films are atomized, evaporated and blended under the action of two rotational ...

Technique for improving flavous of sweet sauce made of fermented flour

Gas turbine combustion-chamber for combusting ethanol fuel

The invention discloses a combustion chamber of a gas turbine burning ethanol fuel. The combustion chamber of the gas turbine burning ethanol fuel adopts a single tube cylinder combustion chamber structure which is formed by a combustion chamber cartridge receiver and a flame tube; an inlet of the combustion chamber is welded with the combustion chamber cartridge receiver, which is used for introducing air current; the flame tube is welded or connected by threads between an outlet and the combustion chamber cartridge receiver; liquid ethanol is supplied to the combustion chamber through an ethanol supply path, and a fuel preparation system is formed by the ethanol supply path and a rotational flow device to complete atomization and evaporation of the ethanol; an electric spark lighter is inserted in the flame tube to realize ignition startup of the ethanol combustion chamber; the whole process of ethanol combustion is completed in the flame tube so as to exhaust high temperature fuel gas ...

Fuel oil premixed apparatus for low emission combustion chamber

The invention relates to a fuel oil premixed apparatus for a low emission combustion chamber, which comprises a venturi pipe hole premixed block and a liquid-state fuel oil nozzle, wherein uniformly distributed venturi pipe holes and anti-backfire holes are opened inside the venturi pipe hole premixed block; the liquid-state fuel oil nozzle is communicated with an oil pipe; the nozzle stretches into the throat center of the venturi pipe hole premixed block; the liquid-state fuel oil is ejected from the fuel oil nozzle; after entering an airflow channel, the hot air bypasses the oil pipe and the nozzle then enters the venturi pipe hole; the venturi pipe hole is utilized to accelerate the hot air, thus the liquid-state fuel oil is rapidly atomized and evaporated in the throat center and the liquid-state fuel oil is uniformly ejected along with the airflow; and uniformly distributed oil-gas mixture is formed at the downstream of the apparatus provided herein. According to the invention, the ...

Double-layer one-way wet permeability concave-convex fabric and manufacturing process thereof

The invention provides a double-layer one-way wet permeability concave-convex fabric and a manufacturing process thereof. The fabric comprises an evaporation layer and a wet permeability layer which is woven on the evaporation layer through tucking, the wet permeability layer comprises a convex point layer and a concave point layer, the yarn density of a material of the wet permeability layer is larger than that of the evaporation layer, one-way evaporation of sweat can be achieved, and the height of convex points is increased with longitudinal drawing. The manufacturing process includes that the evaporation layer is manufactured firstly, then the wet permeability layer is manufactured, and finally, a semi-finished product fabric is subjected to a greige fabric setting process, a dyeing process and a post-finishing process to obtain the double-layer one-way wet permeability concave-convex fabric. The obtained double-layer one-way wet permeability concave-convex fabric has the advantages ...

Combustion chamber micro-mixing head, gas turbine combustion chamber and gas turbine

The invention relates to the technical field of gas turbines, and provides a combustion chamber micro-mixing head, a gas turbine combustion chamber and a gas turbine. Wherein the combustion chamber micro-mixing head comprises a honeycomb unit, a vortex generator and an injection channel, a plurality of honeycomb holes are formed in the honeycomb unit, the honeycomb holes extend along the thickness of the honeycomb unit so as to form a flowing channel in the honeycomb unit, and injection holes used for injecting hydrogen are formed in the side wall of the flowing channel; the vortex generators are arranged in the flow channels in the honeycomb holes, disturbance on air in all directions is increased, vortexes in the flow direction along the way are generated, the air flow speed is reduced, and hydrogen is dispersed into the air very quickly on the whole cross section along the way, so that emission of micro-mixing combustion NOx is reduced, meanwhile, the problem of hydrogen tempering can ...

Gas turbine preevaporation combustion-chamber for combusting ethanol fuel

The invention discloses a pre-evaporation combustion chamber of a gas turbine burning ethanol fuel. The pre-evaporation combustion chamber of the gas turbine burning ethanol fuel adopts a single tubecylinder combustion chamber structure which is formed by a combustion chamber cartridge receiver and a flame tube; an inlet of the combustion chamber is used for introducing air current, and is weldedwith the combustion chamber cartridge receiver; an ethanol supply path adopts a direct injecting hole as an ethanol nozzle, liquid ethanol is supplied to a pre-evaporation tube; atomization, evaporation and doping of the ethanol can be completed by using temperature and aerodynamic force of the current in the pre-evaporation tube; air is aerated into the tube from a primary injection hole and a secondary rotational flow hole, the primary injection hole can be divided into two proposals of a radial direction and an axial direction, the rotational flow is not generated by primary jet current, and ...

Regenerative pure air heating system

The invention provides a regenerative pure air heating system which comprises a regenerator, a left end burner and a right end burner. The regenerator is horizontally placed and sequentially comprises a ceramic honeycomb, a refractory mortar castable, a heat insulating layer, a heat preservation layer, a steel cylinder and an exhaust cylinder. Firstly, normal-pressure air and liquefied petroleum gas are supplied into the left end burner and the right end burner, and high-temperature gas generated after ignition accumulates heat for the regenerator from two sides to the center and then is exhausted from the exhaust cylinder. After the temperature of the gas exhausted from the exhaust cylinder reaches needed temperature, the normal-pressure air and the liquefied petroleum gas are cut off, an outlet of the exhaust cylinder is plugged, high-pressure air is supplied and enters from a high-pressure air inlet, and the high-pressure air is heated to reach high temperature after exhausted from a ...

Aerial engine lean premixed preevaporated low contamination combustion chamber

Hydrogen supply structure of premixing pipe

The invention relates to the technical field of hydrogen and air premixing, in particular to a hydrogen supply structure of a premixing pipe. The device comprises a temporary storage bin, the temporary storage bin comprises at least one air inlet end and at least one air outlet end, a premixing pipe is arranged at each air outlet end of the temporary storage bin, and a front-back through premixing cavity is formed in each premixing pipe; each gas outlet end of the temporary storage bin comprises at least one hydrogen jet hole, and the hydrogen jet holes are formed in the bin wall of the temporary storage bin and face the upper opening end of the premixing cavity. Hydrogen penetrates through the hydrogen jet hole at a high speed to be ejected, the dynamic pressure loss is high, the air pressure of hydrogen jet ejected from the hydrogen jet hole is smaller than the air pressure in the surrounding environment, and the hydrogen jet is bound within the diameter range of the premixing pipe under ...

Tower type flame holder for rotor engine

Integrated diffusion oriented combustion chamber

The invention relates to an integrated diffusion oriented combustion chamber which adopts a full ring combustion chamber structure. The integrated diffusion oriented combustion chamber mainly comprises a crankcase, a combustion liner and an oriented diffuser. The oriented diffuser realizes pneumatic and structural coupling, controls the tangential flow direction and carries out diffusion and speed reduction, and a local return low-speed zone is formed, thereby being good for flame linkage and tangential stable combustion; grading combustion is adopted, and a pre-combustion grade can be selected to work alone and work together with a main pre-combustion grade according to work conditions; the pre-combustion grade utilizes the trapped vortex combustion technology for stable work, goes into a main combustion zone to inflame a main combustion grade through a contraction outlet, and provides a stable ignition source for the main combustion grade; fuel of the main combustion grade is injected ...

Transverse jet mixing temperature field estimation method and device

The invention provides a transverse jet mixing temperature field estimation method and device, and the method comprises the steps: obtaining the physical parameters of a mainstream, the initial physical parameters and initial geometric parameters of a transverse jet, and the position of a target estimation plane; based on the physical parameters of the main flow and the initial physical parameters and the initial geometric parameters of the transverse jet flow, obtaining a first position of the transverse jet flow in the penetrating center of the target estimation plane under the virtual uniform incoming flow condition, and based on the physical parameters of the main flow and the initial physical parameters and the initial geometric parameters of the transverse jet flow, obtaining a second position of the transverse jet flow in the penetrating center of the target estimation plane under the main flow incoming flow condition; the transverse jet flow is at a second position of the penetrating ...

Airflow induction backward step standing vortex flame stabilization grading combustion chamber

The invention discloses an airflow induction backward step standing vortex flame stabilization grading combustion chamber. A main combustion grade direct-jetting type nozzle is composed of a first oil inlet, a second oil inlet, an oil collection cavity and jetting holes. A pre-combustion grade airflow induction standing vortex nozzle is provided with two independent gas collection chambers and two rows of jetting holes for jetting nitrogen and premixed gas of methane/air. After entering the combustion chamber, air is divided and enters a main combustion grade flow channel and a pre-combustion grade premixing channel. Liquid fuel is jet through the main combustion grade direct-jetting type nozzle into the main combustion grade flow channel transversely and mixed with main combustion grade airflow. The premixed gas of methane/air and the nitrogen are jet obliquely upwards through the pre-combustion grade airflow induction standing vortex nozzle into a backward step pre-combustion grade part ...

Alternatively-arranged micro-mixing nozzle structure and combustion chamber

The invention relates to the technical field of jet propulsion, and provides an alternately-arranged micro-mixing nozzle structure and a combustion chamber. The alternately arranged micro-mixing nozzle structures comprise mounting seats and first nozzle units; the first nozzle unit is arranged on the mounting seat; the first nozzle unit comprises a reference position pre-mixing micropipe and a staggered position pre-mixing micropipe; the plurality of reference bit pre-mixing micropipes and the plurality of staggered bit pre-mixing micropipes are arranged side by side, and the plurality of staggered bit pre-mixing micropipes are arranged among the plurality of reference bit pre-mixing micropipes; in the flow direction of gas in the reference position premixing microtubes, the first ends of the multiple staggered position premixing microtubes are flush with the first ends of the multiple reference position premixing microtubes, and part of the second ends of the multiple staggered position ...

Low-emission combustion chamber with main combustible stage head part multi-point slant oil taking

The invention relates to a low-emission combustion chamber with main combustible stage head part multi-point slant oil taking. A single-ring cavity structure is adopted; the combustion chamber is composed of a combustion chamber outer casing, a combustion chamber inner casing, a flame tube outer wall, a flame tube inner wall and a combustion chamber head part; all the air for combustion enters a flame tube from the combustion chamber head part, a classification combustion scheme is adopted, and is divided into a pre-combustion stage and a primary combustion stage; a diffusion combustion organization mode with stable rotational flow is adopted for the pre-combustion stage, and a premixing combustion organization mode with slant oil supplying is adopted for the main combustible stage; the stable working range of the combustion chamber is mainly controlled by the pre-combustion stage, the stable combustion in the combustion chamber within a wider working range can be ensured, and simultaneously ...

Combustion chamber outlet temperature distribution estimation method and device

The invention provides a combustion chamber outlet temperature distribution estimation method and device. The method comprises the steps that the structure type of a jet hole of a combustion chamber and the structure type of a channel of the combustion chamber are determined; according to the structure type of the channel, the total momentum-flux ratio between the jet flow of the combustion chamber and the main flow rotational flow is corrected; and according to the structure type of the jet flow hole and the corrected total momentum-flux ratio, the temperature field of each jet flow is determined, and the temperature fields of all the jet flows and the temperature field of the main flow rotational flow are superposed to obtain the outlet temperature distribution of the combustion chamber. According to the invention, outlet temperature distribution estimation considering flame tube structure parameters is realized, and the prediction efficiency and accuracy are improved.

Rotational flow micro-mixing nozzle and combustion chamber

The invention relates to the technical field of jet propulsion, and provides a rotational flow micro-mixing nozzle and a combustion chamber, the rotational flow micro-mixing nozzle comprises a gas channel, the gas channel comprises a straight pipe section and a contraction section, the first end of the straight pipe section is provided with a fuel inlet, and the fuel inlet is used for introducing fuel; the second end of the straight pipe section is communicated with the first end of the contraction section, and the second end of the contraction section forms an outlet of the gas channel; an oxidant inlet is obliquely formed in the pipe wall of the straight pipe section to form a rotational flow channel, and the rotational flow channel is used for guiding an oxidant to flow and promoting fuel and the oxidant to be mixed. The oxidizing agent inlet is obliquely formed in the pipe wall of the straight pipe section, an oxidizing agent enters the gas channel through the oxidizing agent inlet, ...

Rear step type flame holder for rotor engine

The invention discloses a rear-setback flame stabilizer used for a rotor engine which comprises a step head, step plates with curvature, a step head mounting base, a step bottom mounting base and a fuel tube; a centrifugal nozzle is arranged on a nozzle mounting base at the top of the fuel tube and then is arranged together with the step head, and then the atomization adopts the centrifugal nozzle for injection; a bracket formed by the step head mounting base and step bottom mounting base fixes the step head and the step plates with curvature on a high level position, and the rear-setback flame stabilizer is fixed on a rotor through the step bottom mounting base thus leading the rear-setback flame stabilizer to rotate together with the rotor. The invention can provide a stable high-level fire supply for the combustion system of the rotor engine so as to guarantee that the whole combustion system is provided with wide and stable work scope and higher combustion efficiency; simultaneously ...

Sensitization functional type surface fabric that discolours

The utility model provides a sensitization functional type surface fabric that discolours, including the base cloth layer, its characterized in that still includes the sensitization sizing material layer of discolouing, this sensitization discolour the sizing material layer with the discrete thermoprint of design shape and protrusion on the base cloth layer, this sensitization sizing material in situ homodisperse thoughts phototropic compound powder that discolours, its sensitization discolour the compound powder in the sizing material layer dispersion density for 30 -50%, this surface fabric can absorb the ultraviolet ray and produce and discolour under light conditions, reach the sun -proof effect of discolouing, can form the difference decorative pattern that discolours again, the pursuit of people to the personalization has not only been satisfied, simultaneously can play certain protection and suggestion effect to people again, and the fastness is good, soft handle is comfortable and ...

Center fractionation based low-pollution combustor with RQL (rich burn-quench-lean burn) precombustion fraction and LPP (lean premixed prevaporized) main combustion fraction

The invention provides a center fractionation based low-pollution combustor with a precombustion fraction being an RQL (rich burn-quench-lean burn) precombustion chamber and a main combustion fraction being an LPP (lean premixed prevaporized) circular passage. The combustor of a single annular chamber comprises a diffuser, an outer combustor case, an inner combustor case, an outer flame tube wall, an inner flame tube wall and a combustor head. A fractional combustion scheme is adopted by the combustor, the precombustion chamber and the main combustion fraction are arranged at the combustion head, a frequently-used premixed prevaporized combustion mode is adopted by the main combustion fraction, and uniform combustion of lean oil is benefited. According to the low-pollution combustor of a center fractionation structure, an RQL concept is adopted in the precombustion chamber, and a rich oil diffusive combustion mode stable in rotational flow is adopted, so that the combustor works stably ...

Acetic acid bacteria nutriment and using method thereof

Micro-mixing nozzle with rotational flow mixer and combustion chamber

The invention relates to the technical field of jet propulsion, and discloses a micro-mixing nozzle with a rotational flow mixer and a combustion chamber. The micro-mixing nozzle with the rotational flow mixer comprises a gas channel and the rotational flow mixer, the gas channel comprises a straight pipe section and a contraction section; the first end of the straight pipe section forms an inlet end of the gas channel, and the inlet end is used for introducing fuel and an oxidizing agent; the second end of the straight pipe section is communicated with the first end of the contraction section, and the second end of the contraction section forms an outlet end of the gas channel; the rotational flow mixer is arranged on the straight pipe section and defines a rotational flow channel in the straight pipe section, and the rotational flow channel is used for guiding fuel and an oxidizing agent to flow and promoting the fuel and the oxidizing agent to be mixed. According to the micro-mixing ...

High-through-flow rotational flow combustion organization structure

The invention discloses a high-through-flow rotational flow combustion organization structure, and relates to the technical field of aero-engine combustion chambers, the high-through-flow rotational flow combustion organization structure comprises a base, a through opening is formed in the base, a rotational flow assembly is arranged in the through opening, a pre-combustion stage expansion sleeve is arranged at the end of the through opening, and a supporting plate is arranged on the outer wall of the base in a surrounding mode; a supercritical oil inlet hole is formed in the end, away from the base, of the supporting plate, a supercritical oil spraying hole is formed in the side wall of the supporting plate, and multiple sets of flow direction vortex generators are arranged on one side of the supercritical oil spraying hole and fixedly connected to the supporting plate. According to the device, supercritical fuel injection is adopted, fuel is heated to be in a supercritical state, the ...

Radial swirler turning zone liquid and mist injection premixing and prevapourising low pollution burning chamber

Reverse flow combustor allowing wider range of stable running

The invention provides a reverse flow combustor allowing a wider range of stable running. The reverse flow combustor comprises a diffuser, a combustor casing, a flame cylinder head end wall, a flame cylinder outer wall, a flame cylinder inner wall, a large elbow and a head atomizer. Air enters the combustor through the diffuser; part of the air enters a flame cylinder through the head atomizer; another part of the air enters through a main combustion hole of the flame cylinder and a mixing hole thereof, the remaining enters from a cooling structure. The air and fuel fully mix and combust in the flame cylinder. After passing by two 180-degree turns, the air leaves the combustor. The head atomizer performs atomizing in a mixed mode of pressure centrifugal atomizing and pre-swirling prior to pre-film air atomizing; the fuel is fed through a main oil circuit and an auxiliary oil circuit; the main combustion hole arranged in the outer wall of the flame cylinder and the mixing hole thereof are ...

Fuel pre-evaporation and premix perforated pipe

Cross flame holder for rotor engine

The invention relates to a cross flame stabilizer used for a rotary engine which consists of a trough for stabilizing fire and an oil feeding device, wherein, the oil feeding device is positioned in the trough for stabilizing fire; the trough for stabilizing fire takes the shape of a cross, is composed of a horizontal two-dimensional V-shaped trough and a vertical two-dimensional V-shaped trough, and can generate large-scale stable precombustion level flame which can cross the height and width of a combustion chamber; the center of the cross flame stabilizer is positioned at high position of the combustion chamber, the precombustion level flame at high position is spread to the low position by using strong centrifugal effect, so as to provide a stable ignition source for the main combustion level; a split flow cover at the front end of the trough for stabilizing fire adopts a rounding structure, so as to reduce the flow resistance loss of the main stream; the oil feeding device adopts a ...

Compact micro gas turbine

The invention discloses a compact micro gas turbine, which mainly comprises an air inlet channel, an air compressor, a combustion chamber, a turbine, a shaft system installing body, a shaft and a shell, wherein the air compressor is a single-stage centrifugal air compressor; the combustion chamber is a full ring combustion chamber; the turbine is a single-stage concentric turbine; the air inlet channel is connected with a front flange through a screw; an inner ring of a diffuser and an outer ring of the diffuser are welded on the front flange; the direction of air flow is changed from radial to axial after passing through the diffuser; the shaft system installing body is fixed in the inner ring of the diffuser; the turbine and the shaft are integrally machined; after the turbine shaft penetrates through the shaft system installing body, the air compressor is arranged at the front end of the turbine shaft and is locked through an air compressor wheel locking nut; the rear end of the shaft ...

Premixing pre-vaporization combustion chamber for main combustible stage of discrete pipe

The invention provides a premixing pre-vaporization combustion chamber for a main combustible stage of a discrete pipe. The combustion chamber is in a single annulus structure, and consists of a combustion chamber outer case, a combustion chamber inner case, a flame tube outer wall, a flame tube inner wall and a combustion chamber head, wherein combusting air completely enters a flame tube from the combustion chamber head, a staged combustion scheme, namely a pre-combustible stage and the main combustible stage, is adopted; a swirl cup is adopted in the pre-combustible stage which is of a diffusion combustion organization mode; a premixing pre-vaporization device is adopted in the main combustible stage, a main combustible stage nozzle supplies fuel axially, the fuel is vaporized in the premixing pre-vaporization device and blended with air, the uniformly mixed combustible gas enters the combustion chamber to participate in combustion, namely a premixing combustion organization mode. The ...

Radial swirler turning zone direct injection premixing and prevapourising low pollution burning chamber

Disclosed is a radial swirler turning area direct injection premixing pre-evaporation firebox, wherein the firebox composed of a burner head and a flame tube is a single ring structure. The burner head includes a preburning level in the center and a main burning level at the outer ring; Using the direct injection project in the back turning area of the main burning level radial swirler, the main burning level fuel forms the premixing pre-evaporation gas-oil mixture to enter the burning area for burning under the action of the swirling gas of the main burning lever radial swirler, wherein the burning way can effecctively reduce the discharge of the pollutants in the burning chamber, meanwhile, the direct injection in the back turning area and the turning flow for the main burning level radial swirler of the main burning level fuel can reduce the length of the burning chamber; the invention is mainly used in the airmortor firebox, also can be used in the firebox of the industrial gas turbine ...

Gas turbine preevaporation combustion-chamber for combusting ethanol fuel

The invention discloses a pre-evaporation combustion chamber of a gas turbine burning ethanol fuel. The pre-evaporation combustion chamber of the gas turbine burning ethanol fuel adopts a single tube cylinder combustion chamber structure which is formed by a combustion chamber cartridge receiver and a flame tube; an inlet of the combustion chamber is used for introducing air current, and is welded with the combustion chamber cartridge receiver; an ethanol supply path adopts a direct injecting hole as an ethanol nozzle, liquid ethanol is supplied to a pre-evaporation tube; atomization, evaporation and doping of the ethanol can be completed by using temperature and aerodynamic force of the current in the pre-evaporation tube; air is aerated into the tube from a primary injection hole and a secondary rotational flow hole, the primary injection hole can be divided into two proposals of a radial direction and an axial direction, the rotational flow is not generated by primary jet current, and ...

Light heat insulating and heating fabric and preparation process thereof

The invention relates to a light heat insulating and heating fabric and a preparation process thereof. Through the reasonable design of a fabric structure, the fabric not only has the unidirectional moisture conduction and heat insulation heating functions, but also has the advantages of lightness, warmth keeping, heating and the like. The fabric comprises a temperature locking and evaporating layer and a moisture conducting and heating layer woven on the temperature locking and evaporating layer, wherein the moisture conducting and heating layer comprises a heating layer and a moisture conducting layer, and the linear density of the moisture conducting and heating layer is greater than that of the temperature locking and evaporating layer; the moisture conducting and heating layer is formed by weaving the moister conducting layer and the heating layer, and the heat conducting layer is a bump structure, protrudes out of the surface of the moisture conducting and heating layer, and is in ...

Miniature gas turbine combustion chamber

The invention discloses a miniature gas turbine combustion chamber, which has an annular structure and mainly comprises a flame tube, an outer casing, an inner casing, a swirler and a fuel oil supply system. The flame tube is formed by welding an outer flame tube, a head end wall and an inner flame tube; the rear end of the flame tube is connected with a rear flange of the casing of the combustion chamber through a screw; the rear end of the outer casing is connected with the rear flange of the casing through a bolt; and a front flange of the casing is connected with the front end of the casing through a bolt. An inlet of the combustion chamber is welded on the front flange of the casing; air radially enters the inlet of the combustion chamber; the front end of the inner casing is fixed in a hole of the inlet of the combustion chamber; the swirler is welded on the head end wall; the fuel oil supply system is fixed on an outer ring of the inlet of the combustion chamber; a main combustion ...

Preparation method for carbon nanofiber containing transition metal and nitrogen element and application of carbon nanofiber in fuel-cell catalysts

The invention discloses a preparation method for a carbon nanofiber containing transition metal and a nitrogen element and application of the carbon nanofiber in fuel-cell catalysts, belonging to the technical field of carbon nanofibers and the fuel-cell catalysts. The preparation method comprises the following steps of: dissolving at least one transition metal salt and at least one nitrogenous polymer into a solvent to form a precursor solution; carrying out electrostatic spinning on the precursor solution to obtain an organic nanofiber; and heating to carbonize the organic nanofiber in a basic inert atmosphere to obtain the carbon nanofiber containing the transition metal and the nitrogen element. A nanofiber self-supporting membrane is directly used as a fuel cell electrode after dipped in the solution, or the carbon nanofiber is coated on the electrode to be used as a fuel cell catalysis electrode after formed into powder and then mixed with the solution. The method is simple and is ...

LED bracket stage treatment device

The invention discloses an LED bracket stage treatment device. The LED bracket stage treatment device comprises a frame, a bracket jacking mechanism and two groups of sorting components; the bracket jacking mechanism is used for being docked with previous working station bracket conveying equipment and jacking an LED bracket; the two groups of sorting components are separately positioned on the two sides of the bracket jacking mechanism and are correspondingly used for sorting standard products and bad products; the sorting components comprise bracket fixtures, troughs, overlapped material lifting mechanisms and material pushing mechanisms; the bracket fixtures are used for clamping the LED bracket and are switched between a position above the bracket jacking mechanism and positions abovethe troughs; the troughs are used for placing the sorted standard products and bad products; the overlapped material lifting mechanisms are used for adjusting the depths of the troughs; the material pushing ...

Rapid hydrogen and air premixing pipe structure

The invention relates to the technical field of hydrogen premixing, in particular to a rapid hydrogen and air premixing pipe structure. The pre-mixing pipe comprises a pre-mixing pipe body, a vertically-through pre-mixing cavity is formed in the pre-mixing pipe body, the two ends of the pre-mixing pipe body are an inlet end and an outlet end respectively, a hydrogen supply plate is arranged at the inlet end of the pre-mixing pipe body, and at least one hydrogen jet hole is formed in the hydrogen supply plate; a plurality of air jet hole groups are formed in the side wall of the premixing pipe body along the axial direction. According to the invention, large-momentum air flow can transversely impact small-momentum hydrogen flow within an extremely short flow distance, and the penetration depth of large-momentum air to small-momentum hydrogen can be greatly improved, so that the mixing uniformity of air and hydrogen is improved, the highest mixing uniformity can reach 94%, and the mixing ...

Integrated burner with back step precombustion stage and V-groove main combustion stage

An integrated burner with a back step precombustion stage and a V-groove main combustion stage consists of a precombustion stage and a main combustion stage, wherein the precombustion stage adopts a low-speed recirculation region produced by a back step flame holder to stabilize the flame, stable flame jet is produced at a high position of a combustion channel, and the high-temperature flame jet is propagated to a low position by using the rotating centrifugal force of a rotary engine, thereby igniting fuels of the main combustion stage arranged at the low position and providing stable ignition source for the main combustion stage; and the main combustion stage adopts a multipoint direct-injection type oil injection method, and a V-groove is added in front of the igniting to stabilize themain combustion stage so as to lead the main combustion stage to have excellent flame stability and crossed flame reliability. The integrated burner can provide stable high-position combustion sourceand ...

Radial two -stage swirl nozzle in combustion chamber

The utility model discloses a low radial two -stage swirl nozzle in combustion chamber who pollutes, it includes the radial coaxial central fuel channel of arranging, peripheral fuel channel and annular air duct, annular air duct is separated into central air duct and peripheral air duct by the flow distribution plate, central whirl device and peripheral whirl device have been arranged in center air duct and the peripheral air duct respectively, center fuel channel export sets up prechamber, has guaranteed the stable of burning and good emission performance through this kind of nozzle structure, can use like more clear gaseous state or liquid fuel such as the natural gas to has the advantage that operating condition easily adjusted.

Premix and pre-evaporation combustion chamber

The invention discloses a tangential premix and pre-evaporation combustion chamber. The combustion chamber has a single-ring cavity structure; and through a design by adopting a concept of staged combustion, combustion gas is totally supplied by a pre-combustion stage and a main combustion stage, wherein the pre-combustion stage adopts a steady-rotational flow diffusion flame combustion organization mode; and the main combustion stage adopts a premix and pre-evaporation combustion organization mode. The combustion chamber mainly comprises a flow-dividing diffuser, an outer casing of the combustion chamber, an inner casing of the combustion chamber, a fuel nozzle, the pre-combustion stage, the main combustion stage, a flame tube outer wall and a flame tube inner wall, wherein the pre-combustion stage stabilizes the flame by a low-speed return area generated by rotational flow air entering the combustion chamber from a pre-combustion stage swirler assembly; and the fuel needed by the main ...

Counter-flow flame combustion chamber

The invention relates to a counter-flow flame combustion chamber which has a monocyclic cavity structure. The counter-flow flame combustion chamber is designed by adopting a concept of staged combustion, and combustion gas is supplied from a pre-combustion stage and a main combustion stage, wherein the pre-combustion stage adopts a diffusion combustion structural mode with stable whirlblast, and the main combustion stage adopts a combustion structural mode of combining premixing and pre-evaporation with counter-flow flame. The counter-flow flame combustion chamber mainly comprises a shunt diffuser, an external combustion chamber case shell, an internal combustion chamber case shell, a fuel nozzle, a head pre-combustion stage, a flame tube external wall main combustion stage, a flame tube internal wall main combustion stage, a flame tube external wall and a flame tube internal wall, wherein the head pre-combustion stage utilizes stable flame in a low-speed backflow area, which is generated ...

Hydrogen-assisted combustion structure of fuel pre-filming air atomizing nozzle

The invention provides a hydrogen-assisted combustion structure of a fuel pre-filming air atomizing nozzle. The structure mainly comprises a hydrogen nozzle, a fuel pre-filming atomizing nozzle, and multiple cyclones. The hydrogen nozzle and the fuel pre-filming atomizing nozzle are integrated; the hydrogen nozzle is disposed between the primary cyclone and the secondary cyclone. Pores of the hydrogen nozzle are in front of pores of the fuel pre-filming atomizing nozzle. Fuel is sprayed from the pores of the fuel pre-filming atomizing nozzle to be primarily atomized; the under action of cyclone air produced by the primary cyclone and hydrogen sprayed from the hydrogen nozzle, the fuel enters the cyclone air produced by the secondary cyclone and turns into fuel mist, and meanwhile, the hydrogen also enters a reflow area. The hydrogen nozzle, the fuel pre-filming atomizing nozzle and the multiple cyclones coordinate to atomize the fuel, so that the reflow area structure is formed. Combustion ...

Prefilming three-stage pre-mixing and pre-evaporating low-pollution combustor

The invention provides a prefilming three-stage pre-mixing and pre-evaporating low-pollution combustor which comprises a diffuser, an outer combustor case, an inner combustor case, a flame cylinder outer wall, a flame cylinder inner wall and a combustor head, wherein all the air for combustion enters a flame cylinder from the combustor head; the combustor head adopts a multi-stage combustion scheme which includes one precombustion stage and two main combustion stages; a premixed combustion mode is used for the main combustion stages; and a diffusion combustion mode with stable cyclone is used for the precombustion stage. The main combustion stage is structurally divided into two stages, thus avoiding the increase of pollutant emissions caused by poor main-stage oil and gas mixing during stage transfer under the condition of one main combustion stage, and simultaneously reducing the pollutant emissions by 30% in the working condition without affecting combustion stability; and a prefilming ...

Main combustible stage tangential oil supply premix and pre-evaporation combustion chamber

The invention relates to a main combustion stage tangential oil supply premix and pre-evaporation combustion chamber. The combustion chamber is in a single-ring chamber structure and is designed by adopting the conceptual design of staging combustion, and all the used amount of gas for combustion is supplied by the precombustion stage and the main combustion stage. The combustion chamber mainly comprises a flow-dividing type diffuser, a combustion chamber outer case, a combustion chamber inner case, a fuel nozzle, the precombustion stage, the main combustion stage, a flame tube outer wall and a flame tube inner wall. The precombustion stage utilizes a low-speed flow returning zone generated by swirl air entering the combustion chamber by a precombustion stage swirler component; the fuel needed by the main combustion stage is ejected by the tangential main combustion stage nozzle, is atomized under the air flow effect generated by entering of atomized air of the main combustion stage nozzle ...

Backflow combustion chamber adopting visible optical observation structure

The invention provides a backflow combustion chamber adopting a visible optical observation structure, which comprises a combustion chamber casing, an annular flame tube, an inner end cover assembly, an outer end cover assembly, a first observation window body and a second observation window body, the combustion chamber casing comprises a combustion chamber inner casing and a combustion chamber outer casing which form a first annular cavity, and a combustion chamber inner casing cover plate connected to the inner casing; the annular flame tube is arranged in the first annular cavity; the inner end cover assembly is arranged at the rear end of the annular flame tube and connected with an exhaust pipe. The outer end cover assembly is arranged at the rear end of the combustion chamber outer casing and connected with an air inlet pipe. The first observation window body is arranged in the combustion chamber case; the second observation window body is arranged on the inner end cover assembly ...

Low-emission natural gas combustion chamber with wide stable working range

The invention discloses a low-emission natural gas combustion chamber with a wide stable working range. The combustion chamber adopts a single pipe multi-head combustion chamber structure, and mainly consists of a combustion chamber casing, a flame tube, cyclones and a natural gas supply system; the combustion chamber adopts multiple cyclone head parts; the cyclones are arranged in a uniform arrangement manner at the center and the periphery, and are connected with the flame tube through floating sleeves; the natural gas supply system comprises multiple natural gas pipelines and nozzles; the natural gas pipelines extend in from a nozzle base of the casing, and are inserted into the corresponding cyclones; the flow of each nozzle is independently controlled; the mixing of air and natural gas is finished in the cyclones; the ignition is realized by an electrospark igniter; gas is directly discharged from an outlet of the combustion chamber; when the incoming flow temperature of air in an ...

Low-pollution combustion chamber provided with premixing and pre-evaporating ring pipe

The invention relates to a low-pollution combustion chamber provided with a premixing and pre-evaporating ring pipe, which adopts a single-ring cavity structure and consists of a combustion chamber outer casing, a combustion chamber inner casing, an outer flame tube, an inner flame tube and a combustion chamber head part, wherein air used for combustion completely enters into the flame tubes fromthe combustion chamber head part; the scheme of fractional combustion can be adopted, and pre-combustion stage and a main-combustion stage are divided; the main-combustion stage comprises the premixing and pre-evaporating ring pipe, a main-combustion stage nozzle and a main-combustion stage swirler; fuel oil is evaporated and mixed inside the premixing and pre-evaporating ring pipe and then enters into the flame tubes after forming even mixed combustible gas, belonging to premixed combustion; a fuel nozzle is used for supplying the fuel oil for the pre-combustion stage and the main-combustionstage ...

Radial swirler turning zone direct injection premixing and prevapourising low pollution burning chamber

Disclosed is a radial swirler turning area direct injection premixing pre-evaporation firebox, wherein the firebox composed of a burner head and a flame tube is a single ring structure. The burner head includes a preburning level in the center and a main burning level at the outer ring; Using the direct injection project in the back turning area of the main burning level radial swirler, the main burning level fuel forms the premixing pre-evaporation gas-oil mixture to enter the burning area for burning under the action of the swirling gas of the main burning lever radial swirler, wherein the burning way can effecctively reduce the discharge of the pollutants in the burning chamber, meanwhile, the direct injection in the back turning area and the turning flow for the main burning level radial swirler of the main burning level fuel can reduce the length of the burning chamber; the invention is mainly used in the airmortor firebox, also can be used in the firebox of the industrial gas turbine ...

Liquid crystal display device and manufacturing method thereof

The invention relates to a liquid crystal display device for forming liquid crystal uniform alignment through the photopolymerization reaction and a manufacturing method thereof. The manufacturing method comprises injecting a liquid crystal alignment material and a liquid crystal material into the position between a first substrate and a second substrate, wherein the liquid crystal alignment material comprises a first monomer containing silicon or nitrogen, and the liquid crystal material can be aligned automatically after the first monomer is fixed with the liquid crystal material; irradiating the liquid crystal alignment material through ultraviolet light with the wavelength between 280nm and 400nm to enable the liquid crystal alignment material to form a first alignment layer and a second alignment layer on the first substrate and the second substrate respectively. The first alignment layer and the second alignment layer are obtained by inducing the liquid crystal alignment material ...

Tangential standing vortex burning chamber

Speed-staggered micro-mixing nozzle structure and combustion chamber

The invention relates to the technical field of jet propulsion, and provides a speed-staggered micro-mixing nozzle structure and a combustion chamber. The micro-mixing nozzle structure comprises a mounting seat and a first nozzle unit, the first nozzle unit is arranged on the mounting seat; the first nozzle unit comprises a plurality of reference position pre-mixing micropipes and a plurality of staggered position pre-mixing micropipes; the plurality of reference bit pre-mixing micropipes and the plurality of staggered bit pre-mixing micropipes are arranged side by side, and the plurality of staggered bit pre-mixing micropipes are arranged among the plurality of reference bit pre-mixing micropipes; the outlet end of the staggered position premixing micropipe is flush with the outlet end of the reference position premixing micropipe; the outlet end of the staggered position premixing micropipe and the outlet end of the reference position premixing micropipe have different jet flow speeds ...

Be applied to temperature control device of heating collar

The utility model relates to a temperature control field especially relates to a be applied to temperature control device of heating collar. Including temperature sensor, AD converter, main control unit, power module, display screen, heating collar, one side of temperature sensor is connected to the heating collar, and temperature sensor's opposite side is connected to the AD converter, and the opposite side of AD converter is connected to main control unit, and main control unit's opposite side is connected with display screen and heating collar, power module is connected with temperature sensor, AD converter, main control unit and display screen to provide the electric energy for it, does power module include that the model is LM1117 5 power core piece U2, transformer T1, full -bridge rectifier circuit D1, transformer T1's vice limit is connected to full -bridge rectifier circuit D1's input, and full -bridge rectifier circuit D1's output provides 15V's power VCC, is connected to power ...

Radial swirler turning zone liquid and mist injection premixing and prevapourising low pollution burning chamber

Disclosed is a radial swirler turning area direct injection premixing pre-evaporation firebox, wherein the firebox composed of a burner head and a flame tube is a single ring structure. The burner head includes a preburning level in the center and a main burning level at the outer ring; Using the direct injection project in the back turning area of the main burning level radial swirler, first the main burning level fuel is premixed with the air, then the main burning level fuel forms the premixing pre-evaporation gas-oil mixture to enter the burning area for burning under the action of the swirling gas of the main burning lever radial swirler, wherein the burning way can effectively reduce the discharge of the pollutants in the burning chamber, meanwhile, the direct injection in the back turning area and the turning flow for the main burning level radial swirler of the main burning level fuel can reduce the length of the burning chamber; the invention is mainly used in the airmortor firebox ...

Three-stage structured pre-mixing and pre-evaporating low-pollution combustor

The invention provides a three-stage structured pre-mixing and pre-evaporating low-pollution combustor which is in a single annular cavity structure and comprises a diffuser, an outer combustor case, an inner combustor case, an outer combustion liner wall, an inner combustion liner wall and a combustor head, wherein all the air for combustion enters a combustion liner from the combustor head; the combustor head adopts a multi-stage combustion scheme which includes one precombustion stage and two main combustion stages; a premixed combustion mode is used for the main combustion stages; and a diffusion combustion mode with stable cyclone is used for the precombustion stage. The main combustion stage is structurally divided into two stages, thus avoiding the increase of pollutant emissions caused by poor main-stage oil and gas mixing during stage transfer under the condition of one main combustion stage, and simultaneously reducing the pollutant emissions by 30% in the working condition without ...

Integral fuel jet radial swirler pre-mixing preevaporated low pollution combustion-chamber

The invention discloses a combustion cavity for an integral fuel oil ejecting radial hydrocyclone with functions of premixing, pre-evaporation and low pollution. The combustion cavity has a single ring cavity structure, and consists of a combustion cavity head and a flame tube, wherein the combustion cavity head comprises a precombustion stage positioned at the center and a main combustion stage positioned at the peripheral. The main combustion stage comprises a direct jet type air atomizer spray nozzle and a main combustion stage radial hydrocyclone. The jetting of the main combustion stage fuel oil and the main combustion stage radial hydrocyclone are integrated. The main combustion stage fuel oil ejected by the direct jet type air atomizer spray nozzle enters into a main combustion stage radial hydrocyclone vane channel of a main combustion stage radial hydrocyclone vane, and the fuel oil is mixed with the rotary flow air of the main combustion stage radial hydrocyclone. A premixedoil-gas ...

Flame tube of combustion chamber, combustion chamber and gas turbine

The invention relates to the technical field of gas turbines, and provides a flame tube of a combustion chamber, the combustion chamber and the gas turbine.The flame tube comprises a first body, the gas inlet end of the first body comprises a plurality of gas inlet channels, and the gas inlet channels are used for introducing main gas flow; the gas mixing channel is arranged in the gas inlet channel and is used for introducing combustion-supporting gas into the gas inlet channel, so that the combustion-supporting gas is mixed with the main gas flow; the vortex generator is arranged in the air inlet channel, and the cross section of the vortex generator is gradually enlarged in the flowing direction of the main airflow. Main airflow is mixed with combustion-supporting gas in the process of passing through the gas inlet channel, at least a first vortex in the flowing direction of the main airflow and a second vortex deviating from the flowing direction of the main airflow are formed when ...

Cross flame holder for rotor engine

The invention relates to a cross flame stabilizer used for a rotary engine which consists of a trough for stabilizing fire and an oil feeding device, wherein, the oil feeding device is positioned in the trough for stabilizing fire; the trough for stabilizing fire takes the shape of a cross, is composed of a horizontal two-dimensional V-shaped trough and a vertical two-dimensional V-shaped trough,and can generate large-scale stable precombustion level flame which can cross the height and width of a combustion chamber; the center of the cross flame stabilizer is positioned at high position of the combustion chamber, the precombustion level flame at high position is spread to the low position by using strong centrifugal effect, so as to provide a stable ignition source for the main combustion level; a split flow cover at the front end of the trough for stabilizing fire adopts a rounding structure, so as to reduce the flow resistance loss of the main stream; the oil feeding device adoptsa centrifugal ...

Low-nitrogen-hydrogen combustion chamber structure

The invention relates to the technical field of combustion chamber structures, in particular to a low-nitrogen-hydrogen combustion chamber structure. The burner comprises a flame tube, an ignition structure is arranged in the center of the head of the flame tube, a premixing gas inlet structure is arranged on the side face of the flame tube, the premixing gas inlet structure is communicated with an inner cavity of the flame tube, and the premixing gas inlet structure can introduce premixed combustible gas into the inner cavity of the flame tube. Combustion is organized by means of rotational flow flame stabilization and staged combustion of combustible premixed gas in the axial direction of the combustion chamber, a safe and stable head flame source is provided by an ignition structure, and the combustion equivalence ratio of the head of a flame tube is reduced; meanwhile, the equivalence ratio of combustible premixed gas entering along the axis of the flame tube can be accurately controlled ...

Micro-mixing nozzle structure with staggered outlet speeds and combustion chamber

The invention relates to the technical field of jet propulsion, and provides a micro-mixing nozzle structure with staggered outlet speeds and a combustion chamber. The micro-mixing nozzle structure comprises a mounting seat and a first nozzle unit, the first nozzle unit comprises a plurality of premixing micro-pipes arranged side by side, one part of the premixing micro-pipes are reference position premixing micro-pipes, and the other part of the premixing micro-pipes are staggered position premixing micro-pipes; the premixing micropipe is provided with an inlet end, an outlet end and a gas channel along the axial direction of the premixing micropipe; an oxidant inlet is formed in the inlet end, and a fuel inlet communicated with the gas channel is formed in the side wall of the premixing micropipe; and the effective areas of the oxidant inlets corresponding to the staggered position premixing micropipes and the reference position premixing micropipes are different, so that the jet velocities ...

Gas turbine combustion-chamber for combusting ethanol fuel

The invention discloses a combustion chamber of a gas turbine burning ethanol fuel. The combustion chamber of the gas turbine burning ethanol fuel adopts a single tube cylinder combustion chamber structure which is formed by a combustion chamber cartridge receiver and a flame tube; an inlet of the combustion chamber is welded with the combustion chamber cartridge receiver, which is used for introducing air current; the flame tube is welded or connected by threads between an outlet and the combustion chamber cartridge receiver; liquid ethanol is supplied to the combustion chamber through an ethanol supply path, and a fuel preparation system is formed by the ethanol supply path and a rotational flow device to complete atomization and evaporation of the ethanol; an electric spark lighter is inserted in the flame tube to realize ignition startup of the ethanol combustion chamber; the whole process of ethanol combustion is completed in the flame tube so as to exhaust high temperature fuel gas ...

Miniature gas turbine combustion chamber

The invention discloses a miniature gas turbine combustion chamber, which has an annular structure and mainly comprises a flame tube, an outer casing, an inner casing, a swirler and a fuel oil supply system. The flame tube is formed by welding an outer flame tube, a head end wall and an inner flame tube; the rear end of the flame tube is connected with a rear flange of the casing of the combustion chamber through a screw; the rear end of the outer casing is connected with the rear flange of the casing through a bolt; and a front flange of the casing is connected with the front end of the casing through a bolt. An inlet of the combustion chamber is welded on the front flange of the casing; air radially enters the inlet of the combustion chamber; the front end of the inner casing is fixed in a hole of the inlet of the combustion chamber; the swirler is welded on the head end wall; the fuel oil supply system is fixed on an outer ring of the inlet of the combustion chamber; a main combustion ...

Device for cleaning, recovering TNT material in waste cartride and its using method

Premixing nozzle structure and combustion chamber

The invention relates to the technical field of jet propulsion, and discloses a premixing nozzle structure and a combustion chamber. The premixing nozzle structure comprises a nozzle channel, the nozzle channel is provided with a first end and a second end, a first inlet and a second inlet are sequentially formed in the nozzle channel in the extending direction from the first end to the second end, the first inlet is used for introducing fuel, and the second inlet is used for introducing an oxidizing agent; the multiple second inlets are distributed in the side wall of the nozzle channel at intervals. The nozzle channel is provided with the first inlet used for introducing the fuel and the second inlet used for introducing the oxidizing agent, the fuel and the oxidizing agent can be premixed in the nozzle channel, the mixing uniformity of the fuel and the oxidizing agent in the combustion process can be improved, and therefore the combustion effect is improved, and emission is reduced; ...

High temperature-pressure radiation heat flow meter

A heat flow meter of wall pure radiation heat flow in high temperature-pressure environment is characterized in that a sapphire crystal window is adopted for insulating the influences of convection and heat conducting, and a heat flow meter which determines radiation heat flow by measuring axial thermoelectric force of a heat absorption cylinder is adopted. The adopted sapphire crystal window is in single-sided convex structure which can effectively expand measurement visual angle, accurate design is carried out on a round window chamfer angle, thus further expanding the measuring angle of the radiation heat flow meter to be 150 degrees. The sapphire crystal window insulates the influences of two heat flows of convection and heat conducting to make the heat flow meter measure radiation heat flow only. The lower surface of a heat receiver is provided with a cooling construction to cool the lower surface thus causing the heat receiver to form stable axial temperature distribution, and the ...

Premixing and pre-evaporating combustion chamber

The invention discloses a premixing and pre-evaporating combustion chamber, which has a single annular chamber structure and adopts a conceptual design of fractional combustion. In the combustion chamber, the total combustion gas volume is supplied by a pre-combustion fraction and a main combustion fraction, the pre-combustion fraction adopts a swirl-flow stable diffusion flame combustion organization mode and the main combustion fraction adopts a premixing and pre-evaporating combustion organization mode. The combustion chamber mainly comprises a shunting diffuser, a combustion chamber outer casing, a combustion chamber inner casing, a fuel oil nozzle, the pre-combustion fraction, the main combustion fraction, a combustion liner outer wall and a combustion liner inner wall. The pre-combustion fraction stabilizes flame by using a low-speed refluxing zone generated by swirl air entering the combustion chamber from a pre-combustion fraction swirler; and after being sprayed out by a main combustion ...

Mixing combustion guide coupling structure of combustion chamber

The invention discloses a mixing combustion guide coupling structure of a combustion chamber, which mainly comprises an outer receiver, an inner receiver, an outer flame tube, an inner flame tube and a turbine guider blade, wherein the turbine guider blade positioned at the downstream of mixing holes of the outer flame tube and the inner flame tube realizes coupling design of mixing, combusting, guiding and cooling, namely, mixing and combustion of mixing airflow and high-temperature fuel are realized, and temperature distribution of the outlet of the combustion chamber is regulated; guide diffusion of airflow at the outlet of the combustion is realized, tangential airflow conditions are provided for a high-pressure turbine moving blade; and mixing airflow facing to the turbine guider blade provides external cooling air for the turbine guider blade, therefore working environment of the turbine guider blade is improved and cooling effect is enhanced. Cooling air inside the turbine guider ...

Integral fuel jet radial swirler pre-mixing preevaporated low pollution combustion-chamber

The invention discloses a combustion cavity for an integral fuel oil ejecting radial hydrocyclone with functions of premixing, pre-evaporation and low pollution. The combustion cavity has a single ring cavity structure, and consists of a combustion cavity head and a flame tube, wherein the combustion cavity head comprises a precombustion stage positioned at the center and a main combustion stage positioned at the peripheral. The main combustion stage comprises a direct jet type air atomizer spray nozzle and a main combustion stage radial hydrocyclone. The jetting of the main combustion stage fuel oil and the main combustion stage radial hydrocyclone are integrated. The main combustion stage fuel oil ejected by the direct jet type air atomizer spray nozzle enters into a main combustion stage radial hydrocyclone vane channel of a main combustion stage radial hydrocyclone vane, and the fuel oil is mixed with the rotary flow air of the main combustion stage radial hydrocyclone. A premixed oil-gas ...

Thermal insulation sleeve for assisting pneumatic atomization of fuel nozzle

The invention belongs to the technical field of engine combustion, and provides a heat insulation sleeve for assisting pneumatic atomization of a fuel nozzle, the heat insulation sleeve comprises a sleeve body, the sleeve body comprises an inner shell and an outer shell arranged on the outer side of the inner shell in a sleeving manner, the inner shell is provided with a mounting cavity with an opening in one end, and an auxiliary air cavity is formed between the inner shell and the outer shell; the sleeve body is provided with an air inlet hole communicated with the mounting cavity and the auxiliary air cavity, and the center line of the air inlet hole does not pass through the center axis of the sleeve body; an atomization outlet is formed in the position, matched with a spray head of the nozzle, of the sleeve body, and a lip structure is formed in the atomization outlet. According to the sleeve, the air inlet direction of the air inlet holes in the sleeve body is non-radial, so that ...

Micro-mixing nozzle structure with alternately arranged outlets with different diameters and combustion chamber

The invention relates to the technical field of jet propulsion, and provides a micro-mixing nozzle structure with different outlet diameters alternately arranged and a combustion chamber. The micro-mixing nozzle structure comprises a mounting seat and a first nozzle unit, the first nozzle unit is arranged on the mounting seat; the first nozzle unit comprises a plurality of reference type pre-mixing micropipes and at least one enlarged type pre-mixing micropipe; the reference type premixing micropipe and the amplification type premixing micropipe are both used for premixing the introduced fuel and oxidizing agent, and discharging the premixed mixed gas from respective outlet ends of the reference type premixing micropipe and the amplification type premixing micropipe; the reference type premixing micropipes and the amplification type premixing micropipes are arranged side by side, and at least one amplification type premixing micropipe is arranged among the plurality of reference type premixing ...

Rear step type flame holder for rotor engine

The invention discloses a rear-setback flame stabilizer used for a rotor engine which comprises a step head, step plates with curvature, a step head mounting base, a step bottom mounting base and a fuel tube; a centrifugal nozzle is arranged on a nozzle mounting base at the top of the fuel tube and then is arranged together with the step head, and then the atomization adopts the centrifugal nozzle for injection; a bracket formed by the step head mounting base and step bottom mounting base fixes the step head and the step plates with curvature on a high level position, and the rear-setback flame stabilizer is fixed on a rotor through the step bottom mounting base thus leading the rear-setback flame stabilizer to rotate together with the rotor. The invention can provide a stable high-level fire supply for the combustion system of the rotor engine so as to guarantee that the whole combustion system is provided with wide and stable work scope and higher combustion efficiency; simultaneously ...

Premixing and pre-evaporating combustion chamber

The invention discloses a premixing and pre-evaporating combustion chamber, which has a single annular chamber structure and adopts a conceptual design of fractional combustion. In the combustion chamber, the total combustion gas volume is supplied by a pre-combustion fraction and a main combustion fraction, the pre-combustion fraction adopts a swirl-flow stable diffusion flame combustion organization mode and the main combustion fraction adopts a premixing and pre-evaporating combustion organization mode. The combustion chamber mainly comprises a shunting diffuser, a combustion chamber outercasing, a combustion chamber inner casing, a fuel oil nozzle, the pre-combustion fraction, the main combustion fraction, a combustion liner outer wall and a combustion liner inner wall. The pre-combustion fraction stabilizes flame by using a low-speed refluxing zone generated by swirl air entering the combustion chamber from a pre-combustion fraction swirler; and after being sprayed out by a maincombustion ...

Central cavity stable fire tangential combustion chamber

The invention discloses a central cavity stable fire tangential combustion chamber, which consists of a shunting type diffuser, a combustion chamber external cartridge receiver, a central cavity rear step pre-combustion stage, an outer ring blunt body flame stabilizer main combustion stage, an inner ring blunt body flame stabilizer main combustion stage, a fuel supply system, an inner flame tube,an outer flame tube and an outlet supporting plate. An air flow with a deflection angle is diffused into the combustion chamber by the shunting type diffuser; the central cavity pre-combustion stage consists of a rear step, a top plate, a nozzle, a tangential slot inner ring and a tangential slot outer ring, and in the pre-combustion stage, the flame is stabilized by a low-speed recirculation zone generated by the rear step; the inner ring and the outer ring blunt body flame stabilizer main combustion stages consist of the inner ring, the outer ring and blunt body stabilizers with deflection angles ...

Integral fuel jet axial swirler pre-mixing preevaporated low pollution combustion-chamber

Counter-flow flame combustion chamber

The invention relates to a counter-flow flame combustion chamber which has a monocyclic cavity structure. The counter-flow flame combustion chamber is designed by adopting a concept of staged combustion, and combustion gas is supplied from a pre-combustion stage and a main combustion stage, wherein the pre-combustion stage adopts a diffusion combustion structural mode with stable whirlblast, and the main combustion stage adopts a combustion structural mode of combining premixing and pre-evaporation with counter-flow flame. The counter-flow flame combustion chamber mainly comprises a shunt diffuser, an external combustion chamber case shell, an internal combustion chamber case shell, a fuel nozzle, a head pre-combustion stage, a flame tube external wall main combustion stage, a flame tube internal wall main combustion stage, a flame tube external wall and a flame tube internal wall, wherein the head pre-combustion stage utilizes stable flame in a low-speed backflow area, which is generated ...

线上快速自动更新的方法

A method for high-speed on-line automatic updating features that the record files of download history are preserved to automatically detect the internal updating information of enterprise server for updating the old archives, and the external updating of enterprise server and user terminal is performed by directly downloading the latest updated archives without duplicating downloading. Its advantage is high updating efficiency.

Transverse jet mixing characteristic estimation method and device

The invention provides a transverse jet mixing characteristic estimation method and device, and the method comprises the steps: obtaining the physical parameters of a mainstream, the initial physical parameters and initial geometric parameters of a transverse jet, and the position of a target estimation plane; based on the physical parameters of the main flow and the initial physical parameters and the initial geometric parameters of the transverse jet flow, the position of the transverse jet flow penetrating the center of each middle estimation plane is obtained; and based on the position of the transverse jet flow in the penetrating center of each middle estimation plane, obtaining the track of the transverse jet flow and the coordinate of the transverse jet flow in the penetrating center of the target estimation plane. According to the transverse jet mixing characteristic estimation method and device provided by the invention, track flow of transverse jet is regarded as steady flow composed ...

Aerial engine lean premixed preevaporated low contamination combustion chamber

Fuel gas measuring device

The invention relates to the technical field of gas measurement, and provides a fuel gas measuring device, which comprises a combustion chamber, a plurality of cooling chambers, a hydrogen chromatograph and a fuel gas analyzer, and is characterized in that the combustion chamber is used for generating fuel gas; the multiple cooling chambers are sequentially connected in series, the cooling chambers are used for cooling fuel gas, at least part of the multiple cooling chambers are air cooling chambers, the air cooling chambers are filled with inert gas, and the combustion chamber is connected with the first cooling chamber in the multiple cooling chambers; and the hydrogen chromatograph and the fuel gas analyzer are connected in parallel and then are connected with the last cooling chamber in the plurality of cooling chambers. According to the fuel gas measuring device, water vapor in high-temperature and high-humidity fuel gas can be condensed so as to remove the water vapor in the fuel ...

V -type cone flame holder for rotor engine

The invention discloses a V-shaped cone flame holder used for the rotor engine. The V-shaped cone flame holder is characterized in that the V-shaped cone flame holder comprises a supporting frame and a V-shaped cone, wherein, the V-shaped cone is connected and fixed with a V-shaped cone connecting seat on the supporting frame through a thread way and is positioned at the high position of a combustion passage; the supporting frame adopts a hollow structure, the feeding fuel enters the oil fuel passage in the middle of the supporting frame through the lower end opening of the supporting frame and is atomized to from nozzle oil mist through a centrifugal nozzle installed at the rear end of the supporting frame, and the nozzle oil mist is ignited to form the high temperature flame of the pre-combustion stage flame holder; when the whole device is rotated along the rotor engine, the high temperature flame of the pre-combustion stage flame holder is caused to float from the high position to the ...

Integrated diffusion oriented combustion chamber

The invention relates to an integrated diffusion oriented combustion chamber which adopts a full ring combustion chamber structure. The integrated diffusion oriented combustion chamber mainly comprises a crankcase, a combustion liner and an oriented diffuser. The oriented diffuser realizes pneumatic and structural coupling, controls the tangential flow direction and carries out diffusion and speedreduction, and a local return low-speed zone is formed, thereby being good for flame linkage and tangential stable combustion; grading combustion is adopted, and a pre-combustion grade can be selected to work alone and work together with a main pre-combustion grade according to work conditions; the pre-combustion grade utilizes the trapped vortex combustion technology for stable work, goes into amain combustion zone to inflame a main combustion grade through a contraction outlet, and provides a stable ignition source for the main combustion grade; fuel of the main combustion grade is injected to ...

Tower type flame holder for rotor engine

The invention relates to a tower type flame holder used for a rotor engine, and the tower type flame holder consists of a supporting frame and a flame stabilizing tube. The flame stabilizing tube is fixed on a rotor through the supporting frame, and the flame stabilizing tube and the rotor rotate together; the flame stabilizing tube comprises a diffuser and a cyclone, the flame stabilizing tube enters into the cyclone after diffusion of the diffuser, and uses the low speed reflow region generated by using the toroidal swirl to stabilize flame, finally forms high temperature jet flame at the outlet opening of the flame stabilizing tube finally, and provides a steady fire source for the primary combustion stage. The invention can provide a steady high steady fire source for the combustion system of the rotor engine, and ensures that the entire combustion system has a broad stable operation range as well as an efficient combustion.

Low-pollution combustion chamber with premixed and pre-evaporated precombustion part

The invention relates to a low-pollution combustion chamber with a premixed and pre-evaporated precombustion part, which adopts a monocylic cavity structure and comprises a pressure diffuser, an outer receiver of a combustion chamber, an outer wall of a flame tube, an inner wall of the flame tube and a combustion chamber head, wherein all air for combustion enters the flame tube from the combustion chamber head, a grade combustion scheme is adopted and comprises a precombustion grade and a main combustion grade ; the main combustion grade adopts a premixed combustion mode, and the precombustion grade adopts a mode of combining diffusion combustion with stable rotational flow and rotational-flow premixed combustion; and the precombustion grade adopts the mode of combining the diffusion combustion and the premixed combustion, and pollutant discharge under a small working condition is reduced without influencing stable combustion. In the invention, the precombustion grade structure is simple ...

Integral fuel jet axial swirler pre-mixing preevaporated low pollution combustion-chamber

The invention discloses a combustion cavity of an integral fuel oil ejecting axial hydrocyclone with functions of premixing, pre-evaporation and low pollution. The combustion cavity has a single ring cavity structure, and consists of a combustion cavity head and a flame tube. The combustion cavity head comprises a precombustion stage positioned at the center and a main combustion stage positioned at the peripheral. The main combustion stage comprises a direct jet type air atomizer spray nozzle and a main combustion stage axial hydrocyclone. The technical proposal that the jetting of the main combustion stage fuel oil and the main combustion stage axial hydrocyclone are integrated is adopted. The main combustion stage fuel oil ejected by the direct jet type air atomizer spray nozzle enters into a main combustion stage axial hydrocyclone vane channel of a main combustion stage axial hydrocyclone vane, and the fuel oil is mixed with the rotary flow air of the main combustion stage axial hydrocyclone ...

Flow direction vortex generator and transverse injection coupled efficient mixing structure

The invention discloses a flow direction vortex generator and transverse injection coupled efficient mixing structure, and relates to the technical field of aero-engine combustion chambers, the flow direction vortex generator and transverse injection coupled efficient mixing structure comprises a generator body, the generator body comprises at least one windward side, at least one mounting surface and at least one leeward side, and the windward side is triangular or rectangular; and the leeside is triangular or rectangular. According to the efficient mixing structure based on the flow direction vortex generator, low pressure loss, efficient mixing, high combustion efficiency and more uniform outlet temperature distribution OTDF are achieved under the conditions of high-temperature and high-speed incoming flow and limited mixing section length, the weight is low, the flow speed is low, and machining is easy.

Pneumatic primary level graded low-pollution combustion chamber

The invention discloses a pneumatic primary level graded low-pollution combustion chamber, which consists of a shunting diffuser, a combustion chamber outer case, a combustion chamber inner case, a fuel nozzle rod, a flame tube head, a flame tube outer wall and a flame tube inner wall, wherein the flame tube head mainly comprises a precombustion level, a main combustion level, an isolation section, a head splashing disc and a head end wall; the precombustion level stabilizes flame through a low-speed return flow zone generated by cyclone air which enters the combustion chamber through a cyclone assembly at the precombustion level; fuel at the main combustion level before a main combustion level graded ignition state is atomized under the action of airflow of an inner ring channel of the main combustion level; and the fuel after a main combustion level graded ignition state impacts the inner side of an inner ring of the main combustion level, and a pre-film vaporization mode is formed under ...