88 results about "Propane gas" patented technology

The invention provides composite spinning equipment for forming rocket pipe type structural parts. The composite spinning equipment comprises a structural system, an operation table, an oil cooler, an oil tank, a control cabinet, a water cooler, a heating system, a gas distribution cabinet, a hydraulic station, an oxygen bottle, a circulating filtering device and a propane gas bottle. The structural system comprises a main spindle box, the main spindle box has active power and can achieve controllable rotation, a closing-in spindle box does not have active power, and when closing-in spinning needs to be conducted, the main spindle box and the closing-in spindle box are connected through a coupler, and controllable rotation of the closing-in spindle box is achieved; the water cooling machine is used for cooling the spinning roller in the spinning process; the heating system can heat the workpiece to realize hot spinning; the circulating filtering device sprays cutting fluid to the workpiece, circulating filtering use of the cutting fluid is achieved, and wet-type forced rotation is achieved. The hot spinning and wet spinning device has the integrated hot spinning and wet spinning effects of strong spinning, close-up common spinning and the like.

The invention relates to the field of fire extinguishing agent bottle welding, in particular to a heptafluoropropane gas fire extinguishing agent storage bottle welding device which comprises a guide seat, a pressing mechanism is arranged above the guide seat, a limiting mechanism is installed on the guide seat, and a clamping mechanism is arranged between the guide seat and the pressing mechanism. A driving mechanism for driving the pressing mechanism and the clamping mechanism is mounted on the guide seat, and an inner supporting mechanism is mounted on the inner side of the clamping mechanism. A bottle opening, an upper bottle body and a lower bottle body are aligned and clamped through linkage matching of the guide seat, the pressing mechanism, the clamping mechanism and the driving mechanism, the bottle opening, the upper bottle body and the lower bottle body are placed in a second arc-shaped groove and a first arc-shaped groove which are coaxial, and then the driving mechanism drives an L-shaped pressing block to press and fix the bottle opening, the upper bottle body and the lower bottle body. And then the left clamping plate and the right clamping plate are used for clamping the bottle opening, the upper bottle body and the lower bottle body left and right, so that the welding openings of the bottle opening, the upper bottle body and the lower bottle body are further aligned.

The invention relates to the technical field of fire-fighting equipment, and discloses a cabinet type heptafluoropropane gas fire extinguishing device which comprises a cabinet body, and a tank body is mounted in the cabinet body; the spraying assembly is used for spraying heptafluoropropane gas; the anti-blocking assembly is used for preventing the pipeline from being blocked; the cooling assembly is used for preventing the tank body from being overheated when a fire disaster occurs; a front door is mounted on the front side of the cabinet body, a front plate is mounted on the front side of the cabinet body, a mounting groove is formed in the front plate, a bottle head valve is mounted at the top of the tank body, and an electromagnetic valve is connected to the top of the bottle head valve. Through the arrangement of the spraying assembly, when a fire breaks out indoors, a rotary spraying head can automatically swing left and right in a reciprocating mode through impact force generated by heptafluoropropane gas, the spraying range is expanded through left-right reciprocating swing, and the coverage area of the heptafluoropropane gas is enlarged; and the problem that a local fire source cannot be covered due to injection in a fixed direction is avoided.

The invention relates to the technical field of drill bits, in particular to a high-strength coating alloy drill bit. The drill bit adopts a multi-layer composite coating structure and comprises a chromium-cobalt co-sputtering deposition transition layer and a plasma enhanced chemical vapor deposition diamond-like carbon coating. The key process is as follows: a transition layer is formed on the surface of a matrix through co-sputtering of a chromium target and a cobalt target, then heat treatment is performed at 750-850 DEG C in a propane atmosphere, and finally the diamond-like carbon coating is deposited. The technical process is simple and convenient, industrial application is easy, the abrasion resistance and the service life of the alloy drill bit are effectively improved, and the requirements of the modern manufacturing industry for high-performance cutting tools are met.

The invention belongs to the field of inorganic membranes and chemical engineering, and particularly relates to a method for preparing propylene through capture and in-situ conversion of carbon dioxide in high-temperature flue gas. The method comprises the following steps: introducing high-temperature flue gas into a supply side of a ceramic-molten salt-based two-phase carbon dioxide separation membrane reactor, introducing propane gas into a reaction side of the membrane reactor, permeating carbon dioxide from the supply side to the reaction side, and reacting with propane on the reaction side under the action of a catalyst to generate propylene. The ceramic-molten salt-based two-phase carbon dioxide separation membrane reactor is utilized to simultaneously realize high-temperature capture and in-situ conversion of flue gas carbon dioxide, capture and utilization of carbon dioxide are realized, the separation and purification cost of carbon dioxide is reduced, oxide slowly permeates through the gas separation membrane, the reaction carbon deposition phenomenon can be slowed down, and the separation and purification efficiency of carbon dioxide is improved. The service life of the catalyst is prolonged and the propane oxidative dehydrogenation reaction efficiency is improved. The method can be applied to capture of carbon in coal-fired power plant tail gas or chemical plant combustion tail gas, and the carbon is converted into propylene with more added value in situ.

A method for preparing an ultra-microporous metal-organic framework (MOF) and its application in propylene and propane adsorption separation, belonging to the technical field of crystalline materials, is disclosed. The MOF is derived from the organic ligands D-camphoric acid, 3-amino-1,2,4-triazole, and anhydrous zinc acetate via a solvothermal reaction in N,N-dimethylformamide and tetrafluoroboric acid. Gas adsorption studies have shown that this MOF has the potential to separate propylene and propane gas molecules.

The invention belongs to the technical field of chemical equipment energy saving, and particularly relates to a propane dehydrogenation reaction feeding heating furnace energy-saving device which comprises a supporting frame, a supporting plate, a heat exchange tank, a dehydrogenation reaction heating furnace, a smoke exhaust pipe, a first air inlet pipe, a first filtering assembly, a second filtering assembly, a driving assembly, a transmission assembly, a heat transfer pipe and a heat exchange pipe. The device is reasonable in design, the propane gas entering the dehydrogenation reaction heating furnace can be preheated by using the flue gas discharged by the dehydrogenation reaction heating furnace, the temperature of the propane gas is increased, heat recycling is effectively realized, the heating energy consumption of the propane gas is reduced, and the production cost is reduced. Meanwhile, the situation that impurities in smoke enter the heat transfer pipes and the heat exchange pipes to cause blockage and affect the heat exchange effect can be avoided, and the heat exchange efficiency between the heat exchange pipes can be improved by controlling the heat exchange pipes to rotate and increasing the contact surfaces and mutual contact areas of the heat exchange pipes and the heat transfer pipes and water; and the preheating effect is further improved, and the energy-saving effect is remarkable.

The invention discloses a mixed gas flow online calibration device and method for a cable combustion test device, and belongs to the technical field of cable and optical cable combustion performance detection. The device comprises a propane gas source, an air source, a pressure reducing valve group, a mass flow controller, a mixed gas online calibration module group, a Venturi mixer and a blowtorch, a mixed gas online calibration module is arranged on the downstream of a mass flow controller, and a temperature and pressure sensor, a differential pressure mass flow meter and an embedded processor are combined, so that real-time monitoring and online calibration of mixed gas flow are achieved; according to the method, a flow drift curve can be fitted, the output error of the controller is corrected, and the influence of dismounting calibration and pipeline leakage is avoided; compared with the prior art, the device has the advantages of being high in precision, simple in structure, capable of self-checking, high in stability and the like, the consistency of the blast burner fire source power and the flame shape in a GB / T 31248 test is effectively improved, and the accuracy and repeatability of a cable combustion performance test are guaranteed.

The utility model provides a refrigerant preparation rack, which relates to the technical field of transmission electron microscopes and comprises a functional box and a control box arranged on the lower side of the functional box, and a partition plate in the middle of the functional box divides the functional box into a mixing area and a freezing area; the mixing area is provided with an observation window, and a first inlet pipe, a second inlet pipe and a mixing cavity are arranged in the mixing area; a liquefying cavity is formed in the freezing area; a display screen is arranged on the side face of the control box, a high-voltage area is arranged on one side of the display screen and provided with indicator lamps, and a low-voltage area is arranged on the side, away from the high-voltage area, of the display screen and provided with control buttons. The device is simple in structure, ethane and propane gas are mixed in the mixing area on the front side of the function box to obtain ethane-propane mixed gas, the ethane-propane mixed gas is liquefied in the freezing area on the rear side of the function box, the control box below the function box can monitor and control mixing and liquefying operation, the control box is divided into high pressure and low pressure, and the control box is convenient to use. The safety is high, and the refrigerant is efficiently and stably prepared.

The invention belongs to the technical field of gas separation materials, and particularly discloses a mixed matrix membrane for C3H6 / C3H8 gas separation and a preparation method of the mixed matrix membrane. Wherein SCA6 calixarene is dispersed in an organic solvent and mixed with an organic solvent of a 6FDA-TMPDA polymer to serve as a membrane casting solution for membrane preparation, and the mixed matrix membrane is obtained. According to the invention, 6FDA-TMPDA is taken as a polymer matrix, and SCA6 filler is introduced, so that the dissolution coefficient of C3H6 gas in the membrane is increased, and the obtained gas separation membrane realizes higher C3H6 / C3H8 separation selectivity. Meanwhile, after the mixed matrix membrane provided by the invention continuously operates for a period of time, the separation performance of the mixed matrix membrane can still be basically unchanged.

A haz gas detection system includes a haz gas sensor and a controller. The haz gas sensor generates an output indicative of a measured concentration of a gas fuel in an airflow vented from a gas turbine enclosure. The controller is communicatively coupled to the haz gas sensor and receives the output from the haz gas sensor; compares the output of the haz gas sensor to a first threshold, wherein the first threshold is determined for operation of the haz gas sensor with methane gas; receives a valve control signal indicative of a propane valve being open; compares the output of the haz gas sensor to a second threshold, wherein the second threshold is determined for operation of the haz gas sensor with propane gas; and in response the determining that the output of the haz gas sensor exceeds the second threshold, generates an alarm, generates instructions to shut down the gas turbine system, or both.

The utility model provides a linkage control heptafluoropropane gas fire extinguishing device, and belongs to the technical field of fire extinguishing. Comprising a storage tank, and a lifting assembly and a rotary spraying assembly are arranged on the outer wall of the storage tank; the lifting assembly comprises a top plate installed at the top of the storage tank, a first motor is fixedly assembled at the bottom of the top plate, and a first driving wheel is fixedly assembled at the top end of an output shaft of the first motor. The first motor drives the first driving wheel to rotate, the first driving wheel rotates to drive the first driven wheel to rotate, the first driven wheel rotates to drive the four sets of gears to rotate, the gears rotate on the outer wall of the screw to drive the screw to move longitudinally, and the screw moves longitudinally to drive the bottom plate to move longitudinally. And finally, the storage tank and the rotary spraying assembly are driven to change the height, so that the height of the device can be adjusted according to different building inner floor heights, and the fire extinguishing effect of the fire extinguishing device is guaranteed.

The utility model provides a refrigerant R290 gas leakage detection alarm, and relates to the technical field of propane gas alarm. The top end surface of the fixed mounting plate is fixedly connected with an alarm main body; the upper part of the alarm main body is symmetrically and fixedly connected with two warning lamps; the center of the lower part of the alarm body is fixedly connected with a detection interface. Two auxiliary grooves are symmetrically formed in the outer part of the fixed mounting plate; the positions of the two auxiliary grooves are aligned; and two fixed plates are symmetrically and fixedly connected in the fixed mounting plate. When the alarm main body detects that refrigerant R290 gas leaks through the detection interface, an electrifying signal is sent to the electromagnet, and the transparent protection shell is driven to turn over through a series of transmission, so that the transparent protection shell protects the alarm main body, and the problem that the leakage of the refrigerant R290 gas is caused due to rapid movement and dense crowding of workers is solved. The problem that workers are prone to collide with alarms installed on the periphery, and once collision occurs, the alarms are extremely prone to being touched by mistake is solved.

The present invention is applicable to the technical field of dehydrogenation reactions, and provides a dehydrogenation reaction device, including a reaction kettle. One side of the reaction kettle is fixedly connected to a box body. The outer surface of the reaction kettle is provided with a three-neck feed pipe communicating with the inside of the reaction kettle. A first motor is fixedly connected inside the box body. The output end of the first motor is fixedly connected to a first rotating shaft that rotates and extends into the reaction kettle. One end of the first rotating shaft away from the first motor is fixedly connected to a transmission shaft. A pipe that rotates and extends outside the reaction kettle is rotatably connected inside the reaction kettle. In the dehydrogenation reaction device of the present invention, the driving gear can drive the transmission ring to rotate around the driving gear inside the support ring, and the rotation of the material holding cylinder is realized, so that the catalyst inside the material holding cylinder can be disturbed, enabling the propane gas to react more fully with the catalyst, and to a certain extent ensuring the speed of the propane dehydrogenation reaction.

The invention provides an LIBS-based online detection method and system for components of molten steel in an RH refining furnace, and belongs to the field of ferrous metallurgy. The slag breaking gun, the purging gun and the detection gun are integrated in the three guns respectively, and the three guns are controlled to ascend and descend integrally in a servo motor and lead screw transmission mode. The slag breaking gun adopts high-pressure pulse injection type propane gas non-contact slag breaking, the purging gun adopts high-pressure nitrogen gas purging, and the detection gun is used for LIBS element composition detection; a gun self-protection linkage mechanism is detected, when the gas pressure and flow are too low, the temperature is too high or equipment communication faults occur, fault signals are fed back to an industrial personal computer, and a servo motor immediately responds and lifts the three guns to a safe distance; the molten steel liquid level continuously fluctuates, the laser range finder and a servo motor encoder are jointly controlled through an RS422 serial port communication protocol, laser is emitted to collect data, and meanwhile automatic focusing and distance adjusting are conducted; according to the invention, the accuracy, the real-time performance and the precision of online detection of the molten steel components are improved.

The utility model discloses an on-line detection and calibration system for a gas inlet flow meter, which relates to the field of gas flow meter calibration and comprises a nozzle flow meter, a gas inlet flow meter and a gas analyzer which are sequentially connected in series and are communicated through a gas inlet pipeline. The nozzle flowmeter is connected with a standard gas source and is used for spraying gas in the standard gas source into the gas inlet pipeline and enabling the gas to sequentially flow through the gas inlet flowmeter and the gas analyzer; according to the mass M1 of the propane gas injected by the nozzle flowmeter and the propane gas M2, measured by the gas inlet flowmeter and the gas analyzer, at the tail end of the gas inlet flowmeter, whether the measured data of the gas inlet flowmeter are reliable or not is judged according to the numerical value obtained by comparing the difference value of the M1 and the M2 with the M2, online calibration is conducted on the gas inlet flowmeter, and the gas inlet flowmeter can be accurately measured. On the premise that the air inlet flow meter is not disassembled, online inspection and calibration of the high-horsepower engine air inlet flow meter are achieved.

The embodiment of the utility model provides an acetylene buffer system under vinyl pyrrolidone production accidents, and relates to the technical field of vinyl pyrrolidone production. The acetylene buffer system in the vinyl pyrrolidone production accident comprises an acetylene buffer tank, a flash tank and an ethenylation reactor, and the gas outlet end of the acetylene buffer tank is provided with a connecting pipeline. According to the utility model, after being boosted by the acetylene compressor, the gas is conveyed to the acetylene recovery tank for temporary storage, and when the system is started again, the acetylene gas temporarily stored in the recovery tank is discharged to the acetylene buffer tank through the regulating valve and returns to the system for reuse, so that guarantee measures are provided for the process safety of the acetylene gas, and the acetylene gas is recycled when the system is started and stopped; in addition, gas-phase acetylene gas and propane gas can firstly enter the acetylene recovery tank to play a buffering role in an accident state and can still be recycled subsequently, and then when the acetylene gas conveyed by an external plant is temporarily abnormal, materials in the acetylene recovery tank can be used for keeping short-time production, so that the continuity of a production device is guaranteed.

The invention provides an automatic test system process for a turbojet engine pedestal, relates to the technical field of new energy engine testing, is suitable for testing power systems of motor vehicles such as electric vehicles carrying turbojet engines, and is also suitable for testing power systems of various unmanned aerial vehicles and patrol bullets. The problems of more manual operation, low efficiency, high energy consumption and insufficient safety of a traditional test are solved, system hardware is divided into an operation room, a rack test room and a gas cylinder storage room, a measurement and control system device serves as a core, and the whole process of safety protection, gas supply, ignition, starting and testing is integrated. The safety protection system realizes abnormal alarm through a propane gas concentration sensor and a pressure / temperature sensor; the gas supply system automatically controls gas on-off and state monitoring; the ignition system is combined with an exhaust temperature sensor to realize automatic reset of the probe; after starting, oil supply and gas cut-off are automatically switched according to a rotating speed threshold value; normally testing editable working conditions, automatically collecting parameters, and stably stopping after the parameters are collected.

The invention relates a process for the preparation of a bonded structure (4) comprising at least a first plastic part (1) having a first bonding surface (1a), said process comprising the step of a) treating at least part of a first bonding surface of said first plastic part with a flame of a propane-comprising gas, said propane-comprising gas being propane or a mixture comprising at least 50 wt. % of propane based on the weight of the propane-comprising gas with one or more gases selected from the group consisting of methane, ethane, butane, pentane, and hexane, wherein, during treatment with a flame of the propane-comprising gas, a flame is produced by burning a mixture of air and the propane-comprising gas, wherein the gas-to-air ratio is chosen such that the propane gas to oxygen volume ratio is equal to or less than 1:5.01, for example less than 1:5.00 and preferably at least 3.50 to obtain a first plastic part having a flame-treated first bonding surface.

A propane gas utilization system includes: a housing having propane gas; and a propane leak protection material having a catalyst, scavenger and / or oxidizer of propane gas arranged in the housing and comprising at least one of the following: (a) an oxide material having at least one composition of formula (I): Ru1-xMxO2 (I), where 0 lt; x is less than or equal to 0.1, and M is Ag, K, Pt, Rh or Ir, or (b) an oxide material having at least one composition of formula (II): Co3-xMxO4 (II), where 0 lt; or (c) an oxide material having at least one composition of formula (III): MM'xOy (III), where x is the stoichiometric ratio of M 'to M, 0 < = x < = 1.5, y is the stoichiometric ratio of O to M, 1 < = y < = 3, M is an alkali metal, and M' (if xgt; 0) is Y, Ce, Nb, Ta, La, Nd, Mn, Ag, Au or Cr, or (c) an oxide material having at least one composition of formula (III): MM 'xOy (III), where x is the stoichiometric ratio of M' to M, 0 < = x < = 1.5, y is the stoichiometric ratio of O to M, 1 < = y < = 3.

This invention provides a power generation device based on the cold energy of a cryogenic propane tank, comprising a liquefied propane vaporizer, a propane heater, an intermediate medium vaporizer, a turbine generator set, and a dimethylamine circulating pump. The tube-side inlet of the liquefied propane vaporizer is connected to a cryogenic storage tank containing propane. The tube-side outlet of the liquefied propane vaporizer is connected to the tube-side inlet of the propane heater, and the tube-side outlet of the propane heater is connected to a propane pipeline network. Dimethylamine, after passing through the dimethylamine circulating pump, is connected to the tube-side inlet of the intermediate medium vaporizer. The tube-side outlet of the intermediate medium vaporizer is connected to the inlet of the turbine generator set, and the outlet of the turbine generator set is connected to the shell-side inlet of the liquefied propane vaporizer. The shell-side outlet of the liquefied propane vaporizer is connected to the inlet of the dimethylamine circulating pump. This invention achieves dual-sided cascaded energy recovery from cold to heat. Compared to traditional direct seawater heating schemes, the net power generation is increased.

The utility model relates to the technical field of reflux devices, and discloses a gas reflux device for propane filling, which comprises a propane steel cylinder, one side of the propane steel cylinder is fixedly communicated with a gas inlet pipe, and the front side of the propane steel cylinder is fixedly communicated with an exhaust pipe. An air pressure monitor for detecting the internal air pressure of the propane steel cylinder is mounted on the propane steel cylinder; the first return pipe is fixedly communicated with the other side of the propane steel cylinder; the filter box is fixedly installed on the outer side of the propane steel cylinder, the top of the filter box is fixedly communicated with one end of the first backflow pipe, and the filter box is designed to be of an open structure. According to the gas backflow device for propane filling, when propane gas passes through the filter box, a filter screen can filter the gas, impurities such as solid particles, oil stains and dust in the gas are effectively removed, and the gas backflow effect is improved; the filtering function ensures that the gas flowing back to the return tank is kept highly pure, so that the internal cleanness of the equipment is maintained, and abrasion and pollution caused by impurities are avoided.

The utility model discloses a propane gas vaporization stable output device which comprises a base, a propane gas cylinder is fixedly installed on the top of the base, a heating cover is fixedly installed on the outer side of the propane gas cylinder, a heat preservation cover is arranged on the outer side of the heating cover, and a protective cover shell is arranged on the outer side of the heat preservation cover. Three damping balls are fixedly connected to the position, close to one side, of the top between the heat preservation cover and the protective cover shell, and two damping plates are fixedly connected to the position, close to the other side, of the top between the heat preservation cover and the protective cover shell. According to the propane gas vaporization stable output device, the heating cover is fixedly installed on the outer side of the propane gas cylinder, the heat preservation cover is arranged on the outer side of the heating cover, a double-layer heat preservation structure is formed, heat loss is effectively reduced through the design, it is ensured that the propane gas can maintain a stable temperature environment in the vaporization process, and therefore the vaporization efficiency is remarkably improved; and the gas supply stability is ensured.

A tank carrier includes a base member, a backstop, and a pair of support members. The pair of support members extend between the base member and the backstop to form an angled support to solidify an orientation between the base member and the backstop. A lower saddle strap and an upper saddle strap each extend between the pair of support members and are configured to separate from each other between the plurality of support members to extend around a tank. A latch, having a pin, is configured to selectively secure the upper saddle strap to at least one of the pair of support members.

The application provides a metabolic chamber accuracy online verification method and system, comprising: propane gas is accurately controlled by a mass flow controller to set a flow rate into a burner placed in a metabolic chamber, and the propane gas is ignited to be completely combusted; according to a complete combustion stoichiometric ratio of the propane gas, a theoretical oxygen consumption and a theoretical carbon dioxide generation are calculated from the set flow rate; mixed gas discharged from the metabolic chamber is sampled, the sampled gas is dehumidified, a dew point temperature before dehumidification is measured, a volume of the sampled gas is corrected to a dry gas volume under a standard state based on the obtained dew point temperature, and then actual measured oxygen consumption and carbon dioxide generation of the metabolic chamber are obtained; oxygen consumption recovery and / or carbon dioxide recovery are calculated; and whether the recovery is within a preset qualified range is judged, and if yes, it is determined that the metabolic chamber accuracy verification is passed. End-to-end verification of the whole system of the metabolic chamber is realized.

The present invention belongs to the technical field of compact LNG heat exchanger testing, and specifically, relates to an LNG heat exchanger testing system, including a gasification unit and a heat exchange unit. The gasification unit includes an LNG storage tank, an LNG booster pump, an LNG vaporizer and a heater connected by pipelines, an exhaust pipe is provided on the LNG storage tank, a first control valve is provided on the exhaust pipe, a first flowmeter is provided between the LNG booster pump and the LNG vaporizer, and a second control valve is provided between the LNG vaporizer and the heater. The heat exchange unit includes a propane buffer tank, a propane pump and a propane vaporizer connected by pipelines, the propane buffer tank and the propane vaporizer are respectively connected to the LNG vaporizer, a third control valve and a second flowmeter are provided between the propane pump and the propane vaporizer, and a water supply pipeline and a return water pipeline are also provided on the propane vaporizer, wherein a fourth control valve and a third flowmeter are provided on the water supply pipeline. The present invention has high test accuracy and low test cost.

A propane gas-utilizing system includes a housing having propane gas and a propane leakage prevention material having a catalyst, scavenger, and / or oxidizer of the propane gas arranged in the housing and including at least one of (a) an oxide material having at least one composition of formula (I): Ru1-xMxO2 (I), where 0<x≤0.1 and M is Ag, K, Pt, Rh, or Ir, or (b) an oxide material having at least one composition of formula (II): Co3-xMxO4 (II), where 0<x≤0.3, and M is Pd, Cu, or Sr, or (c) an oxide material having at least one composition of formula (III): MM′xOy (III), where x is a stoichiometric ratio of M′ to M, 0≤x≤1.5, y is a stoichiometric ratio of O to M, 1≤y≤3, M is an alkali metal, and M′ (if x>0) is Y, Ce, Nb, Ta, La, Nd, Mn, Ag, Au, or Cr.

The utility model relates to the technical field of propane gasification, in particular to a propane gasification system which comprises a shell-and-tube heat exchanger, and the shell-and-tube heat exchanger is connected with a tube pass fluid inlet tube, a tube pass fluid outlet tube, a shell pass fluid inlet tube and a shell pass fluid outlet tube. A coil pipe is wound outside the shell-and-tube heat exchanger, one end of the coil pipe is connected with a steam pipe, and the other end of the coil pipe is connected with a tube pass fluid inlet pipe. A coil pipe shut-off valve and a coil pipe adjusting valve are arranged on the coil pipe; by arranging the coil pipe, steam is introduced into the coil pipe, on the basis that circulating water in a tube pass heats liquid-state alanyl ammonia, the steam can be used for heating the liquid-state alanyl ammonia, the steam can be mixed with the circulating water after being condensed, and the temperature of the circulating water is increased after mixing; finally, the evaporation effect of the liquid propane is enhanced.

The invention belongs to the technical field of acrylic acid hydroxyl ester production, particularly relates to an acrylic acid hydroxyl ester production loop reaction device and method, and aims to solve the problems of low reaction speed, more generated side reactions, high material consumption, low production cost and the like caused by the fact that materials cannot be uniformly contacted with ethylene oxide / propylene oxide gas due to the fact that the spraying direction of a spraying mixer is fixed. In order to solve the problem of low product quality, the invention provides the following scheme: the device comprises a tool bottom plate, the upper side of the tool bottom plate is provided with a reactor body, one side of the reactor body is connected with a reactor cover plate through a bolt, the outer part of the reactor body is provided with a mixing module, and the mixing module comprises a driving motor; a mounting round opening is formed in one side of the reactor cover plate. The hydroxyl acrylate production loop reaction device and method disclosed by the invention have the effects that materials are fully mixed, the reaction speed is high, generated side reactions are low, the material consumption is reduced, and the product quality is high.

The utility model belongs to the technical field of valves, and provides a container valve for a heptafluoropropane gas fire extinguishing device, which comprises a valve body, a valve core, a valve core and a valve core, the valve element is provided with an opening position and a closing position; two ends of the first spring are respectively connected with the valve core and the valve body; the pressing cap is hollow, the two ends of the pressing cap are open, the pressing cap is arranged at one end of the valve element and fixedly connected with the valve body, an inflation cavity is defined by the pressing cap, the valve element and the valve body, and the side, facing the valve element, of the pressing cap tightly presses the sealing membrane; the mounting base is arranged on the side, away from the valve element, of the pressing cap; the puncture needle is arranged on the side, away from the valve element, of the sealing membrane; the first driving assembly is arranged on the mounting seat; and the emergency driving assembly is arranged on the mounting seat, and the emergency driving assembly is in transmission connection with the puncture needle. The container valve for the heptafluoropropane gas fire extinguishing device is simple in structure, and when the first driving assembly breaks down, the container valve can be opened through the emergency driving assembly.