Efficient propeller with blades curled backward for centrifugal propeller machinery

一种小型径流式或混流式涡轮增压器

... 本发明公开了一种汽车(轿车、轻型车、载重车)、拖拉机、农业机械和工程机械增压内燃机用的涡轮增压器。与传统、典型的小型径流式或混流式涡轮增压器的结构相比，本发明的特征在于：涡轮叶轮为前弯叶片叶轮(叶片进口几何角的合理择用范围为45°≤β#-[1A]≤75°)。其效果是大幅度降低了现有技术存在的在内燃机低转速工况时涡轮进口产生的大正冲角冲击损失，显著提高了涡轮增压器的效率。 ...

Efficient propeller with blades curled backward for centrifugal propeller machinery

An efficient blade wheel with backward curved blades for the pump, fan, air compressor, etc is disclosed. Its blade has the cylinder face profile near the external diameter of blade wheel, the surface composed of smooth curves, and a curved direction different from the rotation direction for its part near the wall to form a acute angle (30-65 deg.). Its advantages are the limit to escape and diffusion of low-speed fluid or separated fluid, high uniformity of flow field at outlet, and high efficiency.

Ejection air-supplying turbosupercharger

The invention discloses a turbocharger which utilizes the outer source compressed air to apply complementary energies on a rotor of the turbocharger, so as to improve the pressurizing pressure and improve the lower working situation property and instant characteristics of a gas engine. The turbocharger is formed by combining three parts of a turbocharger with ordinary structure and two accessories - a gas ejector and a gas complementing chamber. The outer source high-pressure compressed air ejects partial low-pressure pressurizing air through the gas ejector to form gas complementing air to flow in the gas complementing chamber to be mixed with the exhaust gas of the gas engine, thus increasing the fuel gas flow flowing into a turbine and improving the power and pressurizing pressure of the turbine. Compared with the prior art, the turbocharger has the advantages of mature technology, simple structure, reliable and safe use, low cost, direction pressure control, large adjusting and controlling ...

Turbosupercharger for IC engine in vehicle

Mixed flow type turbine vane

Outlet flowing intersecting surface changing adjustable turbo nozzle ring

The invention relates to a turbine nozzle ring used in turbochargers. Compressed air from an outlet of an air compressor of the turbocharger and/or an external source goes through a hollow internal cavity of the nozzle vanes or a hollow sandwich near the internal wall of an intake pipe of a vane-less spiral case and blows directly to the nozzle vane ring or main burning gas flow at a flow passage and/or an outlet of the vane-less spiral case through a ventilation groove gap cut between a vane-shaped back side (or front side) and/or a rear margin part or through circular arc-shaped ventilation gap of the outlet of the hollow sandwich near the zero-degree section of the tip of the vane-less spiral case, making the mixed air of blowing flow from the gaps and the main flow change the flow direction at the outlet of the nozzle ring and causing the change of the flow angle (namely flow section) at the outlet. The invention has the advantages of wide range of control simple structure, low cost ...

Turbine nozzle ring with adjustable and variable outlet flowing angle

The invention relates to a turbine nozzle ring in a turbocharger. Pressurized air flowing out from an outlet manifold bypass of an air compressor of the turbocharger per se and/or compressed air of an external air source (or exhaust fuel gas flowing out from an outlet manifold bypass of an exhaust pipe of an internal-combustion engine) passes through the hollow cavity of a nozzle blade or a hollow interlayer nearby the inner wall of a bladeless volute inlet pipe, and jets and blows a nozzle blade ring or the interior of a bladeless volute runner and/or a main fuel gas flow in a downstream way from a blade profile back (or ventral face) and/or a through-flow slit cut at the tail edge part (a jet deflection arc guide plate is connected to the back of the tail edge slit) or an annular arc through-flow gap at a hollow interlayer outlet nearby the zero-degree section of a bladeless volute tongue tip and the jet deflection arc guide plate connected thereafter, so that the air flow formed by mixing ...

Small-type radial-flow or mixed-flow turbo supercharger

The present invention discloses a turbosupercharger for automobile (car, light truck and lorry), tractor, agricultural machine and engineering machine supercharging internal combustion engine. As compared with structure of the traditional and typical small radial-flow or mixed-flow turbosupercharger said invention is characterized by that its turbine impeller is a kind of forward-curved blade vane wheel (reasonable selective range of blade inlet geometrical angle is: beta IA is greater than or equal to 45 degC or is less than or equal to 75 deg.C). Said invention can obviously raise the efficiency of the turbosupercharger.

Turbosupercharger for Internal combustion engine in vehicle

The turbosupercharger consists of one small run-off or mixed flow turbosupercharger capable of meeting the requirement of torque of low-rotation speed condition in vehicle internal combustion engine,and one air compressor pre-rotating inlet device combined together. the turbosupercharger controls the supercharged pressure by means of air compressor intake pre-rotating technology for high rotation speed condition in vehicle internal combustion engine so as to prevent over supercharge and overload of supercharger. Pre-rotating pressure control has the advantages of ripe technology, simple structure, high reliability, direction control, low cost, etc.

Diffuser with dual-column blades arranged radially and serially

A diffuser for centrifugal air compressor has front and back rings of blades, which are serially arranged in a ring and are alternatively arranged between two rings. The curved directions for the blades in different rings are different. Its advantages are high efficiency and wide range of flow variation in enlarged high-efficiency region and stable working region.

Radial-flow type or mixed flow type turbocharger

The present invention provides a kind of turbocharger for supercharge internal combustion engine. Compared with traditional radial-flow type or mixed flow type turbocharger structure, the present invention features that the partial or whole length of the match part between vane wheel edge and volute of the compressor and the match part between vane wheel edge and volute of the turbine is "zero-interval" carbon ring contact sealing structure. The present invention has greatly reduced leakage loss and thus obviously raised efficiency.

高增压柴油机用的一种双轴二级涡轮增压器

The invention discloses a second-level turbine boosting system and the double-shaft second-level turbine booster in the middle and large power high boosting diesel engine applied to ship, naval vessels and vehicle and the electricity generation. The low and high pressure level are made up of a normal structure single shaft turbine booster and a single shaft radial fan turbine booster, which are connected together in series with a boosting pipe between the outlet of the high pressure turbine and the inlet of the low pressure level turbine. Compared with current device, the invention can be applied to the second turbine boosting system in high boosting diesel machine with middle and large power applied to the quality.

Exhaust by-pass valve for turbocharging system

The invention discloses an exhaust by-pass valve for a turbocharging system wherein the exhaust by-pass valve is also a vortex forward pressure regulator/a turbine backpressure regulator. The exhaust by-pass valve for the turbocharging system is characterized in that a gas inject sucking device is mounted behind an exit of a turbine wheel of a turbocharger in a concatenation mode, the gas pressure(backpressure) of the exit of a turbine is caused to be reduced significantly, and therefore variable working condition performance of supercharging internal combustion engines can be improved greatly. The exhaust by-pass valve for the turbocharging system is strong in practicability, mature in technology, simple in structure, safe, reliable and convenient to use, obvious in energy-saving effect, low in cost of technical innovation, and worthy of wide popularization.

一种径向串置双列叶片扩压器

... 本发明涉及离心压气机的一种径向串置双列叶片扩压器，它由径向串联配置、圆周向错开排列的前、后两列径向叶片扩压器组成，其特征在于：前列叶片中弧线的弯曲凹凸方向与后列叶片中弧线的弯曲凹凸方向相反，容易在后列叶片进口部分的腹面附近形成收敛几何特征明显、形状合适的绕流控制流道，对叶栅绕流实施有效的控制，大幅度改善离心压气机的变工况性能――提高效率、扩大高效区与稳定工作区的流量变化范围。 ...

Flow-guiding turbocharger

The invention discloses a flow-guiding turbocharger which is applicable to a vehicle turbocharged engine so as to improve low working condition performance and transient characteristic and can meet the requirements of the full-speed working condition characteristics. The flow-guiding turbocharger mainly consists of a common regular-structured vehicle small streamflow (mixed) turbocharger and two valves which are a charge air flow-guiding valve and an exhaust gas bypass valve. Part of charge air flowing out from a branch pipe bypass of an outlet of an air compressor with low working condition flows into a flow-guiding air channel of an inlet pipe of the volute casing of the turbocharger by the air flow-guiding valve, gas supply is implemented to the gas flowing into the impeller of the turbocharger and the power of the turbocharger and the boost pressure are improved. While in high working condition, the gas discharging is implemented to the exhaust gas by the gas bypass valve so as to restrict ...

一种径向单列叶片扩压器

The invention relates to a radial single-row vane diffuser in eccentric pressure machine technology. At the front part of the vane inlet, along the flowing direction of the flow, it has flow slot seam structure on the front surface and the back surface. The boarder flow on the seamed vane surface can be controlled effectively through the ejection blow or extraction to the slot seam flow, it can be maintained with excellent by-pass state in a large working state range, upgrades the performance of the eccentric pressure fan greatly, upgrades the efficiency, enlarges the high efficiency area and the flow change range of the stable working area. The invention can be used to the radial single-row vane diffuser independently; it also can be applied to form a double-row or multi-row radial series vane diffuser.

Injection/drainage air-supply turbocharging system

The invention discloses an injection/drainage air-supply turbocharging system which is applied to a turbocharged internal combustion engine of vehicles, ships and engineering machines to improve the low (rotating speed and load) working condition performance and the transient characteristics of the turbocharged internal combustion engine. Through two supplementary air supply structures, namely a high pressure air injection air supply pipeline and a turbocharged air drainage air supply pipeline of the system, charging air flowing into the internal combustion engine and combustion air flowing into a turbine are supplied, so that the power and the turbocharging pressure of the turbine are greatly increased, and the fuel consumption, the exhaust temperature and the harmful emission are obviously reduced. Compared with the prior art, the invention has the advantages of mature technology, simple structure, safe and reliable use, great conditioning degree and good effect.

Single-stage turbo machine capable of compressing air

The invention discloses the technology of carrying out water spraying atomization and cooling in the gas compression thermodynamic process in an impeller of a single-stage (or the first stage of a multi-stage structure) turbo machine applied to an axial / radial / mixed flow type ventilator, an air blower and a compressor for compressing air, and an air supply system of a turbocharger and a proton exchange membrane fuel cell. By the adoption of the technology, power consumption can be reduced substantially, and energy can be saved. The single-stage turbo machine is simple in device, mature in technology, safe and reliable to use, low in technical improvement cost, good in effect, and suitable for large-scale popularization and application.

Turbocharger with variable turbine cross section and variable flow control function

The invention discloses a turbocharger with a variable turbine cross section and a variable flow control function, which is suitable for improving low working condition performance and transient characteristics and can meet the requirement on full-speed working condition characteristics of a supercharging internal combustion engine for vehicles/ships/engineering machinery. The turbocharger mainly comprises the ordinary conventional structure turbocharger with a double-flow channel inlet turbine volute, a switch/drain valve and a corresponding connecting pipeline. Due to linked conversion and switching of the opening and closing actions of the valve in a valve box, the configuration relationship between the flow rate of exhaust fuel gas flowing into the turbine and a through-flow cross section can be changed. Control can be performed accordingly, so that supercharging pressure can be increased greatly under a low (rotating speed/load) working condition and the increase of the supercharging ...