Triphenyltin chloride preparation method

The invention relates to a triphenyltin chloride preparation method. The method comprises the following steps: melting metallic tin, splashing the metallic tin with cold water to form tin flowers, adding the tin flowers to a reaction kettle, adding liquid chlorine, and dissolving and stirring to generate tin tetrachloride; mixing sodium with xylene to disperse sodium, putting the obtained sodium and xylene mixture in a second reaction kettle, adding chlorobenzene, and heating the second reaction kettle to 35-50DEG C in order to obtain phenyl sodium; mixing chlorobenzene with tin tetrachloride and phenyl sodium to obtain tetraphenyltin; adding hydrochloric acid to tetraphenyltin to carry out acid precipitation, and carrying out pumping filtration of a mixed solution obtained after the acid precipitation to obtain tetraphenyltin; and disproportionating tetraphenyltin and aluminum trichloride to obtain triphenyltin chloride. The method has the advantages of simple operation and high conversion ...

Triphenyltin chloride preparation method

The invention relates to a triphenyltin chloride preparation method. The method comprises the following steps: melting metallic tin, splashing the metallic tin with cold water to form tin flowers, adding the tin flowers to a reaction kettle, adding liquid chlorine, and dissolving and stirring to generate tin tetrachloride; mixing sodium with xylene to disperse sodium, putting the obtained sodium and xylene mixture in a second reaction kettle, adding chlorobenzene, and heating the second reaction kettle to 35-50DEG C in order to obtain phenyl sodium; mixing chlorobenzene with tin tetrachloride and phenyl sodium to obtain tetraphenyltin; adding hydrochloric acid to tetraphenyltin to carry out acid precipitation, and carrying out pumping filtration of a mixed solution obtained after the acid precipitation to obtain tetraphenyltin; and disproportionating tetraphenyltin and aluminum trichloride to obtain triphenyltin chloride. The method has the advantages of simple operation and high conversion ...

Coil side separator and low blocking coil of end band integral type

The utility model discloses a coil side separator and low blocking coil of end band integral type, including fiber container and the insulating copper foil of coiling on the fiber container, insulating copper foil includes insulated paper and copper foil, and the both sides limit portion of insulated paper folds and forms and the consistent end limit of copper foil thickness, between the copper foil card disposed on both ends limit, insulated paper for an insulating some adhesive tape. Adopt an insulating some adhesive tape insulate to the copper foil, its the transformer core and winding assembly after the baking oven drying, can firmly adhere into between some adhesive tape and the copper foil one wholly, strengthened the mechanical strength and the ability to withstand short circuit of transformer.

Method for analyzing C5 hydrogenation hydrocarbon resin relative molecular weight and distribution with jelly glue pervasion chromatogram

The invention relates to an analysis method for the relative molecular mass and the distribution of C<5> hydrogenation petroleum resin through gel permeation chromatography, the method selects suitable effective small molecular substance as the standard substance, then dissolving the standard substance through tetrahydrofuran(THF) to a guide sample whose concentration is 0.5 to 2mg/mL, analyzing the sample under the chromatographic condition of a PL-GPC 220 gel permeation chromatographic instrument, a differential refractive index detector, a silica gel chromatography column, and mobile phase tetrahydrofuran, wherein, the length of the silica gel chromatography column is 300mm, the inner diameter is 7.5mm, the flow velocity of the mobile phase tetrahydrofuran is 1.0mL/min, the temperature of the column is room temperature, making out a standard curve, and detecting the linearly dependent coefficient; then accurately weighing out a petroleum resin sample, preparing the tetrahydrofuran solution ...

Paleo-water-depth quantitative calculation method aiming at lake facies deposition

The invention provides a paleo-water-depth quantitative calculation method aiming at lake facies deposition. The method comprises: a step 1, screening out lakes similar to a researched region; a step 2, aiming at the lakes screened out, establishing a quantitative relation between a lakebed deposit and a water body depth; a step 3, aiming at the researched region, carrying out a mudstone TOC test, and carrying out statistics on the formation thickness of target layers; a step 4, establishing a quantitative relation between paleo-water-depth data and the formation thickness; and a step 5, drawing a paleo-water-depth planar distribution graph. By adopting the paleo-water-depth quantitative calculation method aiming at the lacustrine deposition, the paleo-water-depth recovery means is further improved, and a new research idea and technical means are provided for the paleo-lake deposition evolution process research and the prediction of multi-type lake facies sand bodies.

Preparation method of fluorescent whitening agent

A preparation method of a fluorescent whitening agent comprises the following steps: 1, three-step condensation: pulping the DSD acid by sodium carbonate, adding cyanuric chloride at 0DEG C under a pH value of 6.5-7, carrying out a first-step condensation, adding sodium carbonate and aniline, carrying out a second-step condensation reaction at 30-35DEG C, adding ammonia water and ethanolamine at 95-100DEG C under a pH value of 7-8, and carrying out a third-step condensation reaction; 2, three-step pumping filtration: carrying out sand core pumping filtration of a solution obtained after the three-step condensation, that is a fluorescent whitening agent vbl solution, and repeating the pumping filtration two times; 3, acid precipitation: carrying out precipitation by using hydrochloric acid; 4, pumping filtration: carrying out pumping filtration of a solution obtained after the acid precipitation, named acid precipitation pumping filtration; 5, kneading: kneading by adopting sodium carbonate ...

Exocarpium citri grandis anti-depression effective part as well as preparation method and application thereof

The invention relates to an exocarpium citri grandis anti-depression effective part and a preparation method and application thereof, and the preparation method comprises the following steps: taking crushed exocarpium citri grandis fresh fruit epicarp as a raw material, and extracting volatile oil by adopting a steam distillation method; when the volatile oil is extracted by adopting a steam distillation method, the weight ratio of the raw materials to the water is 1: 8-1: 12, the soaking time is 1-3 hours, and the extraction time is 4-8 hours, so that the anti-depression effective part of the exocarpium citri grandis is obtained. The method has the beneficial effects that the overall operation is simple, and the content and extraction rate of limonene, gamma-pinolenene, beta-myrcene and alpha-pinene in the effective part can be remarkably improved, so that the quality and curative effect of the extract are remarkably improved, the resource utilization rate is improved, the input cost of ...

Super-water molecular gel initiator as well as preparation method and application thereof

The invention discloses a super-water molecular gel initiator as well as a preparation method and application thereof. The super-water molecular gel initiator has a structure as shown in a formula (1). According to the super-water molecule gel initiator provided by the invention, the transparent liquid can be accelerated to form gel under the condition that the transparent effect is not influenced, so that soft tissues can be plasticized, the tissues can be used for preparing two-dimensional pathological sections, and the three-dimensional to two-dimensional conversion of the tissues under the condition that the structures are not damaged is realized; a new thought is provided for pathological research.

Tetraphenyltin production method

The invention relates to relates to a tetraphenyltin production method. The method comprises the following steps: melting metallic tin, splashing the metallic tin with cold water to form tin flowers, adding the tin flowers to a reaction kettle, adding liquid chlorine, and dissolving and stirring to generate tin tetrachloride; mixing sodium with xylene to disperse sodium, putting the obtained sodium and xylene mixture in a second reaction kettle, adding chlorobenzene, and heating the second reaction kettle to 30-50DEG C in order to obtain phenyl sodium; mixing chlorobenzene with tin tetrachloride and phenyl sodium to obtain tetraphenyltin; adding hydrochloric acid to tetraphenyltin to carry out acid precipitation, and carrying out pumping filtration of a mixed solution obtained after the acid precipitation to obtain tetraphenyltin; drying the tetraphenyltin, examining, packaging, and warehousing. The method has the advantages of simple operation and high conversion rate.

Method for measuring organic acid and ester of centrifuge waste water in cis-anhydride production process with liquid phase chromatography

The invention relates to a detecting method for the organic acid and ester in centrifugal waste water in the cis-butenedioic anhydride production process through liquid chromatography, the method uses Agilent C18 chromatographic column as the analytical column, water, methanol, and acetidin are mixed in a certain proportion as mobile phase, the flow velocity is 1.0mL/min, the column temperature is 40 DEG C, the operating time is 25min, the sample volume is 20muL, an external standard method quantificationally analyzes the organic acid and ester in the cis-butenedioic anhydride waste water through liquid chromatography, the linearly dependent coefficient is more than 0.9969. The invention carries out the effective quantitative analysis for the organic acid and ester in centrifugal waste water in the cis-butenedioic anhydride production process, the detecting method is simple and has good reproducibility; the detecting result is accuracy, the sensitivity is high, which acts a positive pushing ...

Preparation method of fluorescent whitening agent vbl

A preparation method of a fluorescent whitening agent vbl comprises the following steps: 1, three-step condensation: pulping the DSD acid by sodium carbonate, adding cyanuric chloride at 0DEG C under a pH value of 6.5-7, carrying out a first-step condensation, adding sodium carbonate and aniline, carrying out a second-step condensation reaction at 30-35DEG C, adding ammonia water and ethanolamine, and carrying out a third-step condensation reaction; 2, three-step pumping filtration: carrying out sand core pumping filtration of a solution obtained after the three-step condensation, that is a fluorescent whitening agent vbl solution, and repeating the pumping filtration two times; 3, acid precipitation: carrying out precipitation by using hydrochloric acid; 4, pumping filtration: carrying out pumping filtration of a solution obtained after the acid precipitation, named acid precipitation pumping filtration; 5, kneading: kneading by adopting sodium carbonate; 6, drying: drying by adopting ...

Butadiene recovery method using pretreatment process of isoprene preparation from ethene cracking C5

The invention relates to a butadiene method recovery method using pretreatment process of isoprene preparation from ethene cracking C5; in the process of isoprene preparation from the ethene cracking C5, first C4 and light C5 are removed, the C4 and C5 removed at the tower top are further separated to obtain a C4 component with the butadiene content of more than 50%, the C 4 component returns back to a butadiene device for further recovery of butadiene; a material with the C4 and light C5 being removed is sent into a dipolymer reactor for reacting, cyclopentadiene in the material is polymerized to produce dicyclopentadiene, the cyclopentadiene and piperylene in the reacted material are separated by rectification to obtain rough isoprene; and polymer grade isoprene is prepared by further extractive distillation of the obtained rough isoprene; according to the method, in the process of removal of the C4 contained in the C5, part of the light C5 is removed, and under the condition of ensuring ...

Water storage and purification vat (tank)

The invention relates to a water purification, storage and pressurization vat. The water purification, storage and pressurization vat has the feature that the problems of unhygienic water, irregular water supply during water use peak time and ordinary time and various troubles caused during water outage can be efficiently and quickly solved. The technical scheme adopted by the invention for solving the technical problems is that a filter stick device is installed in a water tank, a plurality of filter sticks are connected through removable interfaces, water from an incoming pipe flows into the filter sticks for filtration, cleaner water is delivered into a water vat for storage, and when the water is needed, a booster pump in the water vat deliver the water to each water use points to realize normal water use. The invention achieves the goals that the water is safe and clean and the pressure is sufficient.

Photovoltaic power generation transformer low voltage guide wire structure

The invention relates to a photovoltaic power generation transformer low voltage guide wire structure comprising a transformer iron core assembling member, a low voltage coil c phase, a low voltage coil b phase, a low voltage coil a phase, an electrical laminated wood guide wire clamp used for fixing a low voltage guide wire copper bar and a copper bar. A first guide wire copper bar, a second guide wire copper bar and a third guide wire copper bar serve as the guide wires of the low voltage coil a phase, low voltage coil b phase and low voltage coil c phase respectively and are arranged in the clearance between the low voltage coil b phase and the low voltage coil a phase; a first laminated wood guide wire clamp and a third laminated wood guide wire clamp are used for fixing all the low voltage guide wire copper bars of upper and lower segments to a steel plate welded to a clamping member groove steel. The structure is impacted and attractive, the sensor of integration is strong, and disordering ...

Radiator capable of assembling heat conductivity vane

This invention discloses a radiator of heat guiding wing that can be assembled. It includes many communicated heat guiding pipes that are arranged between upper and lower headers. The said heat guiding pipe is arranged with screw thread fastener that makes it connected by inner heat guiding wing and/or outer heat guiding wing. Screw tread fastening hole is arranged on the heat guiding wing later surface corresponding connected to the screw thread fastener. Each outer heat guiding wing later surface is undertaken static spray coating. It is coated with patterns or characters with different colors. Each lateral surface of outer heat guiding wing is connected to the heat guiding pipe through screw thread fastener. Thus, it forms the several heat guiding wings lateral surfaces splicing of different color characters or patterns in arrangement order. This invention is easy for professional production. It also reduces the manufacturing cost.

Electronic cigarette atomized liquid with anti-depression effect and preparation method thereof

The invention relates to an electronic cigarette atomized liquid with an anti-depression effect and a preparation method thereof, and the electronic cigarette atomized liquid with the anti-depression effect is prepared from the following components in parts by weight: 0.1-4 parts of limonene, 0.1-5 parts of nicotine, 1-8 parts of menthol, 70-80 parts of propylene glycol and 10-30 parts of glycerol. The electronic cigarette atomized liquid has the beneficial effects that the defects that nicotine-containing electronic cigarette atomized liquid on the market at present does not have an anti-depression effect and does not have an improvement effect on depressive symptoms are overcome, and meanwhile, due to the fact that limonene has an anti-inflammatory effect on lung inflammation, inflammation and damage of the lung, the trachea and the bronchus caused by long-term smoking of smoking people can be relieved.

Pressure limiting seal piston and exhaust brake butterfly valve thereof

The invention relates to a pressure limiting seal piston which comprises a step-shaped piston body, wherein the step-shaped piston body comprises a tappet rod (21) and a support seat (22); a first annular groove (211) is arranged on the outer surface of the tappet rod (21); the pressure limiting seal piston (20) is slidably installed in a pressure limiting device shell (8) on the side wall of a valve body (1) of an exhaust brake butterfly valve; the tappet rod (21) convexly extends to an inner cavity of the valve body (1) by a through hole (100) arranged in the inner wall of the valve body (1) and is correspondingly inserted into a pressure relief notch (31); the support seat (22) is arranged on the pressure limiting device shell (8); static pressure holes (9) are also arranged outside the through hole (100) and in the air inlet cavity wall; the first annular groove (211) is positioned inside the through hole in the inner wall of the valve body; the bottom of the support seat (22) is provided ...

Xylene preparation method

The invention relates to relates to a xylene preparation method. The method comprises the following steps: melting metallic tin, splashing the metallic tin with cold water to form tin flowers, adding the tin flowers to a reaction kettle, adding liquid chlorine, and dissolving and stirring to generate tin tetrachloride; mixing sodium with xylene to disperse sodium, putting the obtained sodium and xylene mixture in a second reaction kettle, adding chlorobenzene, and heating the second reaction kettle to 35-50DEG C in order to obtain phenyl sodium; mixing chlorobenzene with tin tetrachloride and phenyl sodium to obtain tetraphenyltin; adding hydrochloric acid to tetraphenyltin to carry out acid precipitation, carrying out pumping filtration of a mixed solution obtained after the acid precipitation, and distilling to obtain low-boiling-point xylene; and disproportionating tetraphenyltin and aluminum trichloride to obtain xylene. The method has the advantages of simple operation, low cost and ...

Preparation method for semi-pinnated brake herb extract injection

The invention relates to a preparation method for a semi-pinnated brake herb extract injection. The preparation method comprises the following steps: directly mixing an active ingredient extract extraThe invention relates to a preparation method for a semi-pinnated brake herb extract injection. The preparation method comprises the following steps: directly mixing an active ingredient extract extracted from a plant semi-pinnated brake herb with an aqueous solution of basic hydroxides, basic salts or basic amino acids; stirring the mixture; keeping the pH value of 7.2 to 8.6; and adding an excipcted from a plant semi-pinnated brake herb with an aqueous solution of basic hydroxides, basic salts or basic amino acids; stirring the mixture; keeping the pH value of 7.2 to 8.6; and adding an excipient to obtain the injection. The preparation process has moderate conditions; the extract compound molecules are ionized in the basic solution to obtain carboxylate anions; and therefore the method nient ...

Spring end cover of exhausting brake butterfly valve and exhausting brake butterfly valve

The invention provides a spring end cover of an exhausting brake butterfly valve. The spring end cover consists of a sleeve (42) and a top cover (43); an inner cavity (44) for accommodating a pressure limitation spring (7) is formed inside the spring end cover; a screw thread is formed on the outer circle of the sleeve (42); a first ventilating hole (401) is formed on the end face of the top cover (43); and the first ventilating hole (401) is communicated with the inner cavity (44). The invention also provides an exhausting brake butterfly valve with the spring end cover. By the invention, unobstructed communicating between the inner cavity of a shell of the pressure limitation device in the exhausting brake butterfly valve and the atmosphere is guaranteed; an air resistance is zero during reciprocating motion of a pressure limitation sealed piston; and exhausting back pressure of an engine can be regulated and controlled effectively and heat can be dissipated immediately, so that failure ...

Automatic control system of screw ship unloader

The invention relates to the technical field of spiral ship unloader control, and discloses a spiral ship unloader automatic control system which comprises a portal frame body and a full-automatic control mechanism, the full-automatic control mechanism is arranged at the top of the portal frame body, and a horizontal spiral conveying mechanism is arranged at the bottom of the portal frame body. A vertical spiral conveying mechanism is arranged on the right side of the horizontal spiral conveying mechanism. According to the automatic control system of the spiral ship unloader, through the arranged laser scanning unit, in the using process, laser scanning is conducted on the environment through the laser scanning module, three-dimensional modeling is conducted through the three-dimensional model building module, and therefore the system automatically sets a safe working area through the safe working area setting module; and the load path is automatically planned through the load path planning ...

Medication for curing nephritis and producing method

A Chinese medicine for treating glomerular nephritis is prepared from 6 Chinese-medicinal materials including rhubarb, capejasmine fruit, alismatis rhizome, liquorice root, etc through proportionally mixing, extracting in water, drying, superfine pulverizing, and granulating or loading in capsules.

Xylene preparation method

The invention relates to relates to a xylene preparation method. The method comprises the following steps: melting metallic tin, splashing the metallic tin with cold water to form tin flowers, adding the tin flowers to a reaction kettle, adding liquid chlorine, and dissolving and stirring to generate tin tetrachloride; mixing sodium with xylene to disperse sodium, putting the obtained sodium and xylene mixture in a second reaction kettle, adding chlorobenzene, and heating the second reaction kettle to 35-50DEG C in order to obtain phenyl sodium; mixing chlorobenzene with tin tetrachloride and phenyl sodium to obtain tetraphenyltin; adding hydrochloric acid to tetraphenyltin to carry out acid precipitation, carrying out pumping filtration of a mixed solution obtained after the acid precipitation, and distilling to obtain low-boiling-point xylene; and disproportionating tetraphenyltin and aluminum trichloride to obtain xylene. The method has the advantages of simple operation, low cost and ...

Multilayer assembled anti-explosion sample thermostat

The invention discloses a multilayer assembled anti-explosion sample thermostat, applied to the heating of petrochemical samples at the constant temperature. A constant-temperature base plate, a sample tube constant-temperature plate, a heating belt constant-temperature plate and a constant-temperature panel are arranged oppositely in sequence and are fixed together by fastening bolts. A right electric heating belt is arranged between the constant-temperature base plate and the sample tube constant-temperature plate, a sample constant-temperature tube is arranged between the sample tube constant-temperature plate and the heating belt constant-temperature plate, and a left electric heating belt is arranged between the heating belt constant-temperature plate and the constant-temperature panel. The right electric heating belt, the sample constant-temperature tube and the left electric heating belt are embedded in grooves of metal plates at two sides. Two ends of the right electric heating ...

Preparation method for semi-pinnated brake herb extract injection

The invention relates to a preparation method for a semi-pinnated brake herb extract injection. The preparation method comprises the following steps: directly mixing an active ingredient extract extracted from a plant semi-pinnated brake herb with an aqueous solution of basic hydroxides, basic salts or basic amino acids; stirring the mixture; keeping the pH value of 7.2 to 8.6; and adding an excipient to obtain the injection. The preparation process has moderate conditions; the extract compound molecules are ionized in the basic solution to obtain carboxylate anions; and therefore the method not only retains an anti-tumor activity structure, but also improves the solubility of the active ingredients. In addition, the basic matter is a micro-molecular compound, can enter a blood circulation system safely and is suitable for being prepared into water soluble injection. The injection has the characteristics of high solubility, good bioavailability, simple process, and low cost.

Bio-fermentation technique for composite vegetable drug and vegetable fermented drug for treating nephritis

The invention relates to a bio-fermentation technique for composite vegetable drug and vegetable fermented drug for treating nephritis, wherein the bio-fermentation technique consists of compound recipe medicament and sterilized water, which is prepared by using composite plants as the culture medium, and carrying out fermentation treatment under predetermined time, temperature and degree of humidity.

Water storage and purification tank

The invention provides a water storage and purification tank which comprises a tank body, wherein the tank body is connected with a purification device; the purification device comprises a plurality of filter sticks connected in series, a water inlet and a water outlet are connected onto a filter stick at the outermost end respectively, and the purification device is arranged at the top of the tank body which is communicated with the water outlet; a water outlet pipe is connected onto the tank body, one end of the water outlet pipe is arranged on the outer side of the tank body, the other end is arranged in the tank body, and one end, arranged in the tank body, of the water outlet pipe extends to the bottom of the tank body. According to the water storage and purification tank provided by the invention, purified water is prestored in the tank body, purification and water storage are combined, water is supplied to each water consuming place by the tank body when needed, and the storage volume ...

Active bone peptide for treating and preventing osteoporosis and preparing method thereof

Environment -friendly amortization wallboard

The utility model discloses an environment -friendly amortization wallboard, it includes wallboard body, wallboard body's up end and lower terminal surface are equipped with inside sunken reinforcement groove respectively, one side of wallboard body is equipped with trapezoidal tenon, its opposite side be equipped with with tenon complex mortise, wallboard body's the front and the back are equipped with the sound hole of inhaling that can channel into sound the inside amortization chamber of wallboard body respectively, the amortization intracavity is equipped with can be with amortization chamber divided sound insulating cavity, amortization chamber and the sound insulating cavity cavity for lining up from top to bottom. This is novel through inhaleing sound in the amortization chamber for the sound wave spreads and weakens between each amortization chamber, or uses the gradient to inhale the propagation that material such as sound cotton directly weakens sound at the amortization intracavity ...

Preparation method of highly-pure fluorescent whitening agent

A preparation method of a highly-pure fluorescent whitening agent comprises the following steps: 1, three-step condensation: pulping an DSD acid by sodium carbonate, adding cyanuric chloride at 0DEG C under a pH value of 6.5-7, carrying out a first-step condensation reaction, adding sodium carbonate and aniline, carrying out a second-step condensation reaction at 30-35DEG C, adding ammonia water and ethanol, and carrying out a third-step condensation reaction; 2, three-step pumping filtration: carrying out sand core pumping filtration of a solution obtained after the three-step condensation, that is a fluorescent whitening agent vbl solution, and repeating two times; 3, acid precipitation: using hydrochloric acid to carry out acid precipitation; 4, pumping filtration: carrying out acid precipitated pumping filtration of a solution obtained after the acid precipitation; 5, kneading: kneading by adopting sodium carbonate; 6, drying: drying by adopting a mechanical dehydration process; 7, ...

Online sliding pressure optimization method for turbine of thermal power plant

The invention discloses an online sliding pressure optimization method for a turbine of a thermal power plant. The online sliding pressure optimization method for the turbine of the thermal power plant includes that changing a steam distribution mode of a valve, and confirming a reasonable high-pressure control valve overlapping degree; testing the best valve sites when two valves of the high-pressure control valve are opened and three valves of the high-pressure control valve are opened so as to confirm the best valve sites; comparing the economical efficiency between the best valve site when two valves are opened and the best valve site when three valves are opened; calculating a back pressure correction pressure difference, a main steam temperature correction pressure difference, a reheat temperature correction pressure difference, a high-pressure cylinder efficiency correction pressure difference and a reheat attemperation water correction pressure difference, using each correction ...

Chinese wampee fruit extract and application thereof in preparation of medicine for preventing and treating alzheimer disease

The invention relates to a Chinese wampee fruit extract and application thereof in preparation of a medicine for preventing and treating an alzheimer disease. The prepared Chinese wampee fruit extract disclosed by the invention can be applied to the medicine for preventing and treating the alzheimer disease as a new method for preventing and treating the alzheimer disease. The medicine disclosed by the invention has the effects of resisting oxidation, inhibiting generation of Abeta, reducing activation of astrocyte cells, and protecting nerve cells, so that the cognitive disorder caused by the disease can be effectively relieved; and the Chinese wampee fruit extract has a relatively good effect on prevention and treatment of the alzheimer disease.

Butterfly sheet of exhausting brake butterfly valve and exhausting brake butterfly valve

The invention provides a butterfly sheet (30) of an exhausting brake butterfly valve. A rotating shaft (32) is arranged in the radial direction of the butterfly sheet (30), used for rotationally fixing the butterfly sheet (30) to an external exhausting brake butterfly valve body (1), and connected with an operating mechanism; a pressure release gap (31) is formed on the outer edge of the butterfly sheet (30); the end face of the pressure release gap (31) is a slope; and an angle formed between the slope and the central line of the butterfly sheet (30) is 26 +/- 2 degrees. The invention also provides an exhausting brake butterfly valve with the butterfly sheet, wherein a pressure limitation device is arranged on the butterfly valve body (1). The butterfly sheet provided by the invention is hard to self-lock and has a better sealing effect; when an engine runs at a low speed, the brake effect is good; meanwhile, during long-time working of the exhausting brake butterfly valve, partial gathered ...

Method for analyzing C5 hydrogenation hydrocarbon resin relative molecular weight and distribution with jelly glue pervasion chromatogram

The invention relates to an analysis method for the relative molecular mass and the distribution of C5 hydrogenation petroleum resin through gel permeation chromatography, the method selects suitable effective small molecular substance as the standard substance, then dissolving the standard substance through tetrahydrofuran (THF) to a guide sample whose concentration is 0.5 to 2mg/mL, analyzing the sample under the chromatographic condition of a PL-GPC 220 gel permeation chromatographic instrument, a differential refractive index detector, a silica gel chromatography column, and mobile phasetetrahydrofuran, wherein, the length of the silica gel chromatography column is 300mm, the inner diameter is 7.5mm, the flow velocity of the mobile phase tetrahydrofuran is 1.0mL/min, the temperature of the column is room temperature, making out a standard curve, and detecting the linearly dependent coefficient; then accurately weighing out a petroleum resin sample, preparing the tetrahydrofuran solution ...

Multilayer assembled anti-explosion sample thermostat

The invention discloses a multilayer assembled anti-explosion sample thermostat, applied to the heating of petrochemical samples at the constant temperature. A constant-temperature base plate, a sample tube constant-temperature plate, a heating belt constant-temperature plate and a constant-temperature panel are arranged oppositely in sequence and are fixed together by fastening bolts. A right electric heating belt is arranged between the constant-temperature base plate and the sample tube constant-temperature plate, a sample constant-temperature tube is arranged between the sample tube constant-temperature plate and the heating belt constant-temperature plate, and a left electric heating belt is arranged between the heating belt constant-temperature plate and the constant-temperature panel. The right electric heating belt, the sample constant-temperature tube and the left electric heating belt are embedded in grooves of metal plates at two sides. Two ends of the right electric heating ...

Bio-fermentation technique for composite vegetable drug and vegetable fermented drug for treating nephritis

Method of quantitatively identifying complex glutenite lithofacies association types

The invention provides a method of quantitatively identifying complex glutenite lithofacies association types, which comprises steps: 1, lithofacies association types are divided, and quantitative description is carried out; 2, a core is used for calibrating response characteristics of imaging well logging; 3, the core and imaging well logging data are used for restraining response characteristics conventional well logging; 4, a sensitive conventional well logging curve is selected; 5, a glutenite lithofacies identification curve is built; and 6, a lithofacies association type identification template is built, and the glutenite lithofacies association types are identified. According to the method of quantitatively identifying the complex glutenite lithofacies association types, the sensitive conventional well logging curve is selected for building the glutenite lithofacies identification curve, and the problem that response characteristics of glutenite well logging are not obvious can be ...

Fluorescent whitening agent vbl

The invention relates to a fluorescent whitening agent vbl. Raw materials for preparing the fluorescent whitening agent vbl comprise cyanuric chloride, sodium carbonate, DSD acid, aniline, ammonia water, ethanolamine and hydrochloric acid, and apparatuses for preparing the fluorescent whitening agent vbl comprise a pumping filtration device, a drying machine and the like. A preparation method of the fluorescent whitening agent vbl comprises the following steps: 1, three-step condensation: pulping the DSD acid by sodium carbonate, adding cyanuric chloride at 0DEG C under a pH value of 6.5-7, carrying out a first-step condensation reaction, adding sodium carbonate and aniline, carrying out a second-step condensation reaction at 30.5-34DEG C, adding ammonia water and ethanolamine at 95-100DEG C under a pH value of 7-8, and carrying out a third-step condensation reaction; 2, three-step pumping filtration: carrying out sand core pumping filtration of a solution obtained after the three-step ...

Radiator capable of assembling heat conductivity vane

This invention discloses a radiator of heat guiding wing that can be assembled. It includes many communicated heat guiding pipes that are arranged between upper and lower headers. The said heat guiding pipe is arranged with screw thread fastener that makes it connected by inner heat guiding wing and/or outer heat guiding wing. Screw tread fastening hole is arranged on the heat guiding wing later surface corresponding connected to the screw thread fastener. Each outer heat guiding wing later surface is undertaken static spray coating. It is coated with patterns or characters with different colors. Each lateral surface of outer heat guiding wing is connected to the heat guiding pipe through screw thread fastener. Thus, it forms the several heat guiding wings lateral surfaces splicing of different color characters or patterns in arrangement order. This invention is easy for professional production. It also reduces the manufacturing cost.

Method for detecting oxygen content in butadiene by utilizing semiconductor laser technique

The invention provides a method for detecting oxygen content in industrial butadiene by utilizing a laser technique, comprising steps of irradiating the detected butadiene gas by utilizing a laser beam (only absorbed by oxygen) being 700-800 nm in wavelength and 0.5-1.5mW in strength, and obtaining the oxygen concentration of the detected butadiene gas by analyzing the attenuation of the laser intensity, wherein the attenuation of the laser intensity is in a functional relationship with the oxygen content in the detected butadiene gas. The method for detecting oxygen content in butadiene adopts the semiconductor laser technique to achieve fast detection of samples (less than 5 seconds), convenient operation, and exact and reliable analysis result (accuracy reaching 0.05 percent); the detection device has simple structure, convenient operation and safe and reliable detection process and prevents the detected samples from damaging workers.

Cable online monitoring method based on distributed temperature measurement and fault waveform analysis

A cable on-line monitoring method based on distributed temperature measurement and fault waveform analysis comprises a distributed temperature measurement module and a fault waveform analysis module, the distributed temperature measurement module serves as an off-line function module, the fault waveform analysis module serves as an on-line function module, the off-line function module carries out noise reduction and dimension reduction processing on historical operation data of a cable, and the on-line function module carries out fault waveform analysis on the historical operation data of the cable. The method comprises the following steps of: processing data information of a cable, inputting the processed data information into a BP (Back Propagation) neural network, extracting a health factor (HI) of the cable, fusing the processed data and the health factor (HI), inputting the fused data and health factor into a constructed deep neural network for training, and extracting deep fault features ...

Automobile V-shaped propelling rod

The invention belongs to an automobile part, and in particular relates to an automobile V-shaped propelling rod. The automobile V-shaped propelling rod is characterized in that a front lifting lug isV-shaped, drift-bolt pull rod sleeves are symmetrically arranged at the V-shaped open end of the front lifting lug, threaded sleeves are arranged in the drift-bolt pull rod sleeves, a nail head is arranged at one end of a drift-bolt pull rod and positioned in the drift-bolt pull rod sleeves, the other end of the drift-bolt pull rod passes through a threaded sleeve center hole and is connected witha rear lifting lug through a thread, a spring adjusting nut connected with the drift-bolt pull rod through the thread is arranged on the drift-bolt pull rod, and a spring is arranged on the drift-bolt pull rod between the spring adjusting nut and the threaded sleeves. The automobile V-shaped propelling rod has the advantages that the shape-retention bending is not easily generated, the parallelism between ...

Dynamic high-energy-efficiency scheduling method and system for big data tasks of hybrid cluster

The invention discloses a dynamic high-energy-efficiency scheduling method and system for big data tasks of a hybrid cluster. According to the method, resource monitoring is carried out on tasks and working nodes in a hybrid cloud platform of big data tasks, the real-time resource utilization rate condition is obtained, and task scheduling is carried out by adopting a multi-dimensional scheduling strategy in combination with the execution condition of the tasks, so that the purpose of energy saving is achieved. According to the method, the distribution strategy of the task can be adaptively adjusted, the efficient execution of the offline task is realized, and meanwhile, the energy consumption of the data center is reduced. In addition, the method can dynamically optimize task allocation, so that energy consumption is reduced to the maximum extent on the premise that task execution is not affected.

Health food of Chinese traditional medicine for promoting hematopoiesis and preparation method

A Chinese-medicinal health-care food for promoting growth of blood cells is prepared from halimasch polyose and Chinese-medicinal materials.

Tetraphenyltin

The invention relates to a tetraphenyltin. A production method of the tetraphenyltin comprises the following steps: melting metallic tin, splashing the metallic tin with cold water to form tin flowers, adding the tin flowers to a reaction kettle, adding liquid chlorine, and dissolving and stirring to generate tin tetrachloride; mixing sodium with xylene to disperse sodium, putting the obtained sodium and xylene mixture in a second reaction kettle, adding chlorobenzene, and heating the second reaction kettle to 30-50DEG C in order to obtain phenyl sodium; mixing chlorobenzene with tin tetrachloride and phenyl sodium to obtain tetraphenyltin; adding hydrochloric acid to tetraphenyltin to carry out acid precipitation, and carrying out pumping filtration of a mixed solution obtained after the acid precipitation to obtain tetraphenyltin; drying the tetraphenyltin, examining, packaging, and warehousing. The method has the advantages of simple operation and high conversion rate.

Automobile V-shaped propelling rod

The invention belongs to an automobile part, and in particular relates to an automobile V-shaped propelling rod. The automobile V-shaped propelling rod is characterized in that a front lifting lug is V-shaped, drift-bolt pull rod sleeves are symmetrically arranged at the V-shaped open end of the front lifting lug, threaded sleeves are arranged in the drift-bolt pull rod sleeves, a nail head is arranged at one end of a drift-bolt pull rod and positioned in the drift-bolt pull rod sleeves, the other end of the drift-bolt pull rod passes through a threaded sleeve center hole and is connected with a rear lifting lug through a thread, a spring adjusting nut connected with the drift-bolt pull rod through the thread is arranged on the drift-bolt pull rod, and a spring is arranged on the drift-bolt pull rod between the spring adjusting nut and the threaded sleeves. The automobile V-shaped propelling rod has the advantages that the shape-retention bending is not easily generated, the parallelism ...

Automobile propelling rod

The invention belongs to an automobile part, and in particular relates to an automobile propelling rod. The automobile propelling rod is characterized in that liner bushings are arranged in two lifting lugs, a connecting mechanism is arranged between the front lifting lug and the rear lifting lug and consists of a spring and a drift-bolt pull rod, a threaded sleeve is arranged in a lifting lug side hole, a nail head is arranged at one end of the drift-bolt pull rod and positioned in the lifting lug side hole, the other end of the drift-bolt pull rod passes through a threaded sleeve center holeand is connected with the lifting lugs through a thread, a spring adjusting nut connected with the drift-bolt pull rod through the thread is arranged on the drift-bolt pull rod, a spring is arrangedon a drift-bolt pull rod between the spring adjusting nut and the threaded sleeve, and an included angle between the axial lines of the center holes of the two lifting lugs and the axial lines of thedrift-bolt ...

American case of concatenation style becomes

The utility model discloses an american case of concatenation style becomes, including before cabinet, high pressure cabinet before the oil tank of installation on base and the base, the low pressure, be provided with low pressure panel and high -pressure panel on the oil tank, the first connecting plate is provided in the limit portion of low pressure panel, and second, three connecting plates are partly do not provided to the both sides limit of high -pressure panel, and the first curb plate and the first connecting plate splice by built -in screws the first, the downthehole setting of two concatenations, and second, three curb plates and second, three connecting plates splice by the first, the three built -in screws that splice downthehole setting. Among the above -mentioned technical scheme, the on the basis of that becomes at the american case of tradition sets up first, two, three connecting plates in addition to offering the first concatenation hole on the side wall surface of the ...

Method for refining phycobiliprotein from dilute solution of phycobiliprotein and flocculation formula

The invention discloses a method for refining phycobiliprotein from a dilute solution of phycobiliprotein and a flocculation formula, and belongs to the field of high-value utilization of marine biological resources. The method comprises the following steps: mixing and flocculating a pH regulator, chitosan, a dilute solution of phycobiliprotein and a pH stabilizer to obtain a precipitate phycobiliprotein-chitosan flocculate, then mixing the phycobiliprotein-chitosan flocculate with an ion buffer solution, taking supernate, and filtering to obtain phycobiliprotein. The method is suitable for refining and extracting phycobiliprotein from a low-abundance phycobiliprotein solution with the concentration lower than 0.1 g/L, the flocculation rate of the phycobiliprotein is 90% or above, the recovery rate is 70% or above, and the purity is (A545/A280) gt; and 3.0, the refining method is simple, and the cost is relatively low.

Cocoa tea polyphenol electronic cigarette atomized liquid with anti-depression effect and preparation method thereof

The invention discloses a cocoa tea polyphenol electronic cigarette atomized liquid with an anti-depression effect and a preparation method thereof, and the cocoa tea polyphenol electronic cigarette atomized liquid with the anti-depression effect is prepared from the following components in parts by weight: 2-10 parts of cocoa extract, 0.02-0.2 part of tea polyphenol, 0.1-2 parts of peppermint oil, 0.1-1 part of rosemary oil, 5-15 parts of ethanol, 10-30 parts of micro-molecular water, 15-30 parts of glycerol and 30-50 parts of propylene glycol. The cocoa tea polyphenol electronic cigarette atomized liquid disclosed by the invention has the beneficial effects of resisting depression and relieving symptoms such as anxiety, tension and dysphoria to a certain extent.

Exhausting brake butterfly valve

The invention discloses an exhausting brake butterfly valve. A pressure limitation sealed piston (20) is arranged in a pressure limitation device on a valve body (1) in a sliding way; the piston is stepped and consists of an upright rod (21) and a support (22); a first ring slot (211) is formed on the outer surface of the upright rod (21); the upright rod (21) convexly extends to the inner cavity of the valve body (1) through an opening (100) formed on the inner wall of the valve body (1) and is correspondingly inserted into a pressure release gap (31) of a butterfly sheet; the support (22) is arranged in a pressure limitation device shell (8); a static pressure hole (9) is formed outside the opening (100) and on an air inlet cavity wall; a pressure limitation spring (7) is arranged at the bottom of the support (22); and the pressure limitation spring (7) is pressed against a spring end cover (40). The exhausting brake butterfly valve has a compact structure; by the exhausting brake butterfly ...