312 results about "Intermediate pressure" patented technology

The embodiment of the invention provides a multi-steam-source cooperative frequency modulation combined heat and power generation system and a control method. The system comprises a boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a power generator, a multi-stage regenerative heater, a heating system and a heating steam supply pipeline. A main steam outlet of the boiler is connected to the high-pressure cylinder through a main steam pipeline, a steam exhaust port of the high-pressure cylinder is connected to the intermediate-pressure cylinder through a pipeline, a steam exhaust port of the intermediate-pressure cylinder is connected to the low-pressure cylinder through a pipeline, and a steam exhaust port of the low-pressure cylinder is connected to the generator through a pipeline. A condensate water outlet of the medium-pressure cylinder is communicated to a condensate water inlet of the boiler through a first condensate water pipeline; the heating system is communicated with a steam exhaust port of the medium-pressure cylinder through a heating steam supply pipeline; the multi-stage regenerative heater is arranged on the first condensate water pipeline and connected with the high-pressure cylinder and / or the intermediate-pressure cylinder through steam extraction pipelines, and steam extraction adjusting valves are correspondingly arranged on the steam extraction pipeline between the high-pressure cylinder and the multi-stage regenerative heater and / or the steam extraction pipeline between the intermediate-pressure cylinder and the multi-stage regenerative heater.

A compressor includes a housing, a first compression mechanism and a second compression mechanism disposed in the housing, and a housing cover fixed to the housing. Both the first compression mechanism and the second compression mechanism are configured to compress a working fluid from a suction pressure to a discharge pressure. The first compression mechanism includes a first cylinder housing having a first fluid storage plenum. The second compression mechanism includes a second cylinder housing having a second fluid storage plenum. The housing cover defines an intermediate-fluid port in fluid communication with the first fluid storage plenum via a first intermediate-fluid passage and the second fluid storage plenum via a second intermediate-fluid passage. Working fluid at an intermediate pressure enters the intermediate-fluid port. The intermediate pressure is greater than the suction pressure and less than the discharge pressure.

The utility model discloses a system for efficiently preparing liquid nitrogen by using a two-stage membrane separation technology, and relates to the technical field of industrial purification and liquefied nitrogen. The membrane separation technology and the gas liquefaction technology are combined, so that nitrogen in air is purified, the residual pressure of medium-pressure gas is fully utilized to provide cold energy for high-concentration nitrogen liquefaction, and the residual potential energy of the high-concentration gas is utilized to improve the nitrogen generation efficiency. A compressor, a gas cooling module, a first-stage separator and a second-stage separator of the system are sequentially arranged in the flowing direction of air. A high-pressure outlet of the second-stage separator is communicated with a first hot end inlet of the first heat exchanger; a first outlet of the first heat exchanger is communicated with a hot end inlet of the second heat exchanger, a second hot end inlet is communicated with a side backpressure outlet of the first-stage separator, a second outlet is communicated with a cold end inlet of the second heat exchanger through an expansion machine, a third outlet is communicated with atmosphere, and the cold end inlet is communicated with a second outlet of the second heat exchanger; and a side backpressure outlet of the second-stage separator is communicated with the compressor.

The invention belongs to the technical field of thermal power generating unit steam supply, and particularly discloses a thermal power plant coupling steam ejector and multi-heat-source fused salt heat storage steam supply system which comprises a thermal power generating unit body, a fused salt heat storage system and a steam supply system. And main steam and flue gas are used as heat sources for combined heat storage, on one hand, the main steam after heat release is used for extracting steam to supply low-parameter industrial steam, on the other hand, fused salt is used for storing heat to generate steam to eject a steam turbine intermediate-pressure cylinder to exhaust steam, and therefore high-parameter industrial steam is supplied, and the energy consumption is reduced. And peak regulation and heat supply tasks of the thermal power plant are synchronously met. According to the system, the deep peak regulation and industrial steam supply capacity of the thermal power generating unit is greatly improved, different steam supply parameter requirements can be met by adjusting parameters of the fused salt heat storage system and the structure of the ejector, flexible regulation and control of industrial steam supply of the thermal power generating unit are achieved, and the problems of a thermal power plant in the aspects of heat storage, peak regulation and steam supply are solved.

The present application provides a spiral compressor comprising: a movable spiral disk; a fixed spiral disk, wherein the fixed spiral disk has a base plate and a spiral wall arranged on the base plate; and a housing arranged on the side of the base plate facing away from the spiral wall.The housing comprises a first chamber having a first opening on the bottom surface of the housing facing the base plate, this first opening being covered by the base plate to form an injection chamber connected via an injection port on the base plate to the compression chamber, which is formed by the movable spiral disk and the fixed spiral disk and corresponds to the intermediate pressure stage, the first chamber being connected to the injection port of the scroll compressor, wherein a check valve is arranged in the first chamber, which releases the flow in the direction from the injection port to the injection chamber and prevents backflow. The present application also relates to a corresponding heat pump device. The advantage of this application lies in its ability to form an injection chamber for a scroll compressor with a simple structure and a small number of components.

Oscillating piston compressor (1) with medium pressure inlet (2), comprising in a housing (4) a cylinder (5) with a oscillating piston (3), wherein the oscillating piston (3) is rotatably mounted on an eccentric (6) of a drive shaft (7) and comprises a separating slide (8) rigidly connected to the oscillating piston (3), a pivot bushing (9) rotatably mounted in the housing (4) for linear guidance of the separating slide (8) in a separating slide guide (10), a low-pressure inlet (11) which is operatively connected to an inlet chamber (5a) in the cylinder (5), a medium pressure inlet (2) which is operatively connected to an outlet chamber (5b) in the cylinder (5), wherein the medium pressure inlet (2) comprises a first section (2a) with a check valve (13) in the housing (4), a second section (2b) in the oscillating bushing (9) and a third section (2c) in the separating slide (8), and a high-pressure outlet (12) which is operatively connected to the outlet chamber (5b) in the cylinder (5).

The utility model discloses a kind of medium-pressure nitrogen gas supply system in air separation device, including liquid nitrogen storage tank, water bath type heat exchanger, first medium-pressure nitrogen pump and second medium-pressure nitrogen pump;The liquid nitrogen storage tank is connected with the water bath type heat exchanger through first medium-pressure nitrogen pipeline, the water bath type heat exchanger is connected with medium-pressure nitrogen gas pipe network through gas nitrogen delivery pipeline;The first medium-pressure nitrogen pump is set on the first medium-pressure nitrogen pipeline;Second medium-pressure nitrogen pipeline is connected on the first medium-pressure nitrogen pipeline between the liquid nitrogen storage tank and the first medium-pressure nitrogen pump, and the other end of the second medium-pressure nitrogen pipeline is connected on the first medium-pressure nitrogen pipeline between the first medium-pressure nitrogen pump and water bath type heat exchanger.The advantage is: by adding second medium-pressure nitrogen pump, ensure that medium-pressure nitrogen gas is stably supplied, avoid the pressure fluctuation of medium-pressure nitrogen gas pipe network caused by the frequent start-stop of first medium-pressure nitrogen pump, while reducing equipment failure rate;By interlocking the medium-pressure nitrogen pump with medium-pressure nitrogen gas pipe network, the overpressure risk of medium-pressure nitrogen gas pipe network is avoided.

The invention discloses a steam inlet control system which comprises a medium-pressure cylinder, a low-pressure cylinder and a communicating pipeline connecting the medium-pressure cylinder and the low-pressure cylinder, and further comprises a steam inlet control valve arranged on the communicating pipeline, the inlet end of the steam inlet control valve is connected with the medium-pressure cylinder, and the outlet end of the steam inlet control valve is connected with the low-pressure cylinder; and the inlet end of the bypass cooling pipeline is connected to the communicating pipeline between the steam inlet control valve and the medium-pressure cylinder, and the outlet end of the bypass cooling pipeline is connected to the steam inlet of the low-pressure cylinder. According to the turbine low-pressure cylinder micro-output coupling operation system and method, the problems that blades are prone to flutter, overheating and water erosion under the low-pressure cylinder micro-output working condition are solved, and the safety and flexibility of deep peak regulation operation of a unit are remarkably improved.

This invention relates to a low-grade waste heat-driven two-stage absorption refrigeration system and method, comprising: a low-pressure stage solution circulation loop, a high-pressure stage solution circulation loop, and a refrigerant circulation loop; saturated liquid output from the condenser in the refrigerant circulation loop mixes with condensed saturated liquid output from the high-pressure stage solution circulation loop, and then undergoes primary throttling and pressure reduction to an intermediate pressure via a first throttling valve before entering a gas-liquid separator for separation; the separated saturated vapor is absorbed by the high-pressure stage solution circulation loop; the separated saturated liquid mixes with condensed saturated liquid output from the low-pressure stage solution circulation loop, and then undergoes secondary throttling and pressure reduction to an evaporation pressure via a second throttling valve before entering an evaporator for evaporation and cooling to generate cooling capacity. This invention utilizes two-stage throttling of the refrigerant at the condenser outlet to reduce irreversible losses, and simultaneously utilizes superheated steam from the generator outlet to preheat the dilute solution, fully utilizing waste heat, which can significantly improve the performance of traditional two-stage absorption refrigeration systems.

The invention relates to a method for controlling a thermal conditioning system comprising: - a main refrigerant circulation loop (A) (10) including: - a compressor (7), - a first heat exchanger (1), - a first expansion valve (31), - a second expansion valve (32), - a second heat exchanger (2), - a first bypass branch (B) including a third expansion valve (33), - a fourth bypass branch (E) including a fifth expansion valve (35), the method comprising the steps: (ii) circulating high-pressure refrigerant through the first heat exchanger (1), through the first branch (B) and through the fourth branch (E), (iv) reducing the refrigerant from the first heat exchanger (1) and the fourth branch (E) to an intermediate pressure, and circulating it through the third heat exchanger (3),(vi) reduce the refrigerant from the third heat exchanger (3) to a low pressure and mix it with the low-pressure refrigerant from the first branch (B). Figure 3,

The double-layer piping (1) has: an inner pipe (3) through which a low-temperature fluid passes; and an outer pipe (5) covering the outside of the inner pipe and forming a heat insulation layer (7) between the inner pipe and the outer pipe, wherein a thrust support structure (9) is provided between the inner pipe (3) and the outer pipe (5), the thrust support structure having: a first pressure-bearing member (11) fixed to the outer peripheral surface (3a) of the inner pipe (3) having a first pressure-bearing surface (11a) facing a first direction (D1) along the axis (C) of the double-layer piping (1); a second pressure-bearing member (13) fixed to the inner peripheral surface (5a) of the outer pipe (5) having a second pressure-bearing surface (13a) facing a second direction (D2) opposite to the first direction (D1); and a first intermediate pressure-bearing member (15) formed of heat insulation material disposed between the first pressure-bearing surface (11a) of the first pressure-bearing member (11) and the second pressure-bearing surface (13a) of the second pressure-bearing member (13).

A combined cycle power generation facility of an embodiment includes: a gas turbine; a heat recovery steam generator including a high-pressure steam generation part which generates steam by using an exhaust gas of the gas turbine, and a reheat part which reheats steam; a high-pressure turbine to which the steam from the high-pressure steam generation part is introduced; an intermediate-pressure turbine provided on a downstream side of the high-pressure turbine; a reheat steam pipe connecting an outlet of the high-pressure turbine and an inlet of the intermediate-pressure turbine with the reheat part interposed therebetween; a combustor to which steam discharged from the intermediate-pressure turbine is introduced, and which combusts oxygen and hydrogen to reheat the introduced steam; a low-pressure turbine to which steam discharged from the combustor is introduced; and a condenser which changes steam discharged from the low-pressure turbine into condensed water.

The invention discloses a compressed air energy storage system which comprises a compressor unit, the compressor unit comprises a first-stage compressor, a second-stage compressor, a third-stage compressor and a fourth-stage compressor which are connected in sequence and is used for compressing air, the first-stage compressor and the second-stage compressor operate in a mode of variable-frequency starting and fixed-frequency operation, and the pressure ratio is not changed in the operation process; and the third-stage compressor and the fourth-stage compressor operate in a variable-frequency starting and variable-frequency operation mode, and the pressure ratio is changed during operation. And the expansion unit comprises a first turbine and a second turbine and is used for expansion acting, and the first turbine is provided with adjustable guide vanes. The system is reasonable in structural design, can guarantee constant power output, and has the advantages of high energy storage density, high system efficiency and low investment cost.

The utility model relates to the technical field of petroleum processing, in particular to a heat source utilization device for an aromatic hydrocarbon extraction process, which comprises a medium-pressure superheated steam generating device, a steam exhaust port of the diesel oil hydrogenation steam turbine is communicated with an inlet end of the desuperheater; and the outlet end of the desuperheater and the outlet end of the temperature and pressure reducer are connected in parallel and then are respectively communicated with the steam inlet of the stripping tower reboiler, the steam inlet of the recovery tower reboiler, the steam inlet of the regeneration tower reboiler, the steam inlet of the benzene tower feeding heater and the steam inlet of the toluene tower reboiler. According to the utility model, surplus low-pressure superheated steam discharged by the diesel hydrogenation steam turbine is used as a heat carrier of the stripping tower reboiler, the recovery tower reboiler, the regeneration tower reboiler, the benzene tower feeding heater and the toluene tower reboiler, so that the use amount of medium-pressure superheated steam is reduced, and the recycling of the surplus low-pressure superheated steam is realized.

The invention provides a jet-absorption heat pump, and belongs to the technical field of refrigeration and heat pumps. The absorber is provided with a dilute solution pipeline which is communicated with the generator through a solution pump and a solution heat exchanger, the generator is further provided with a concentrated solution pipeline which is communicated with the absorber through the solution heat exchanger, the generator is further provided with a refrigerant steam channel which is communicated with the condenser, and the condenser is further provided with a condensate water channel which is communicated with the outside. The condenser communicates with the evaporator through a refrigerant liquid pipeline via a throttling valve, the evaporator communicates with a low-pressure steam inlet of the ejector through a refrigerant steam channel, a working steam channel communicates with a high-pressure steam inlet of the ejector outside, the ejector communicates with the absorber through a medium-pressure refrigerant steam channel, and the generator communicates with the outside through a high-temperature heat medium channel. The absorber and the condenser are communicated with the outside through heated medium channels respectively, the evaporator is communicated with the outside through a low-temperature heat medium channel, and the jet-absorption heat pump is formed.

The invention discloses a durability testing device for a refrigerant sharing type compressor, and relates to the technical field of compressor testing. The compressor testing device comprises a plurality of single testing assemblies, each single testing assembly is provided with a tested compressor, and the single testing assemblies are arranged on a total testing assembly in parallel; each single test assembly is composed of a refrigerant loop formed by connecting a plurality of refrigerant pipelines, a mixer and an oil separator are arranged on the loop, and an oil outlet of the oil separator is connected with an oil inlet of a tested compressor through an oil circulation pipeline. And an air suction port and an air exhaust port of the tested compressor are lapped on the refrigerant loop through refrigerant pipelines and are communicated with the refrigerant loop. The system is high in configuration flexibility, due to the fact that refrigerants are supplied in a centralized mode, the middle pressure can be controlled, large and small systems can be flexibly configured on a single station, working conditions of different capacity sections can be conveniently tested, and the working condition stability is guaranteed. Meanwhile, different concentrative liquid storage tank condensers can store different refrigerants, and testing and switching of the different refrigerants are facilitated.

The invention relates to a steam source switching system of a small steam turbine, the small steam turbine is provided with a first steam inlet and a second steam inlet, the steam source switching system comprises a steam recovery mechanism, and the steam recovery mechanism comprises a first pipeline, a second pipeline and a recovery pipeline; one end of the first pipeline is used for being communicated with the first steam inlet, and the other end of the first pipeline is provided with a low-pressure main steam valve and a first isolating valve which are connected with a main engine four-extraction low-pressure steam source; one end of the second pipeline is used for being communicated with the second steam inlet, and the other end of the second pipeline is provided with a medium-pressure main steam valve and a second isolating valve which are connected with a medium-pressure steam source of a main machine; one end of the recovery pipeline is communicated with the first pipeline, and the other end of the recovery pipeline is communicated with the second pipeline. According to the steam source switching system of the small steam turbine, low-temperature steam formed by long-time stagnation and cooling of medium-pressure steam at the medium-pressure main steam valve is prevented from entering the steam chamber of the small steam turbine to form impact, and the operation stability of the small steam turbine is improved.

The invention discloses a refrigeration enthalpy increasing control method and system based on intermediate pressure and multi-parameter coupling. The method comprises the steps that the intermediate pressure, the operation frequency of a compressor and the temperature of a coil pipe are collected in real time; the basic enthalpy increasing opening degree is determined on the basis of the intermediate pressure, a dynamic compensation value is calculated on the basis of the coil pipe temperature, the basic enthalpy increasing opening degree is combined with the dynamic compensation value, and the target opening degree of the electronic expansion valve for enthalpy increasing is determined; and the electronic expansion valve for enthalpy increasing is adjusted according to the target opening degree of the electronic expansion valve for enthalpy increasing, and therefore refrigeration enthalpy increasing control is achieved. According to the invention, rapid response, accurate adjustment and system protection of enthalpy increase control are realized.

The invention belongs to the technical field of combined heat and power generation units, and particularly relates to a combined heat and power generation unit peak regulation system with an ultrahigh-temperature heat pump coupled with fused salt energy storage. According to the technical scheme, in the heat storage process, a combined heat and power generation unit operates under the lowest load working condition, a boiler is in the lowest stable combustion load, a certain amount of main steam is extracted to heat fused salt, sensible heat of the main steam is stored in the fused salt, and the main steam obtained after heat exchange is decompressed through a pressure reducing valve and then supplied to low-pressure steam; meanwhile, low-temperature steam serves as a low-temperature heat source in the ultra-high-temperature heat pump system with air as a circulating medium, steam flowing out of a boiler low-temperature reheater enters a low-temperature heat exchanger to heat the air, the steam obtained after heat exchange continues to enter a boiler high-temperature reheater to absorb heat to become reheated steam, and then the reheated steam enters a steam turbine intermediate-pressure cylinder to do work; meanwhile, a motor in the ultra-high-temperature heat pump system can consume the cogeneration unit to generate power, and the purpose of zero-load output is achieved. In the heat release process, heat stored by the fused salt is released into feed water to generate high-temperature and high-pressure steam and reheat steam which enter a high-pressure cylinder and an intermediate-pressure cylinder of a steam turbine to do work, and the load rising rate and the peak power generation capacity of the unit are improved; and meanwhile, part of the generated high-pressure steam and low-pressure steam are supplied externally, so that the requirement of industrial steam is met. The problems that in the peak regulation process of the cogeneration unit, the peak regulation capacity is small, and the boiler operation safety and external supply industrial steam parameters under the low load are limited are solved.

The application provides a control system and method for medium-pressure steam admission in a gas-steam combined cycle unit, comprising a medium-pressure water extraction pump, a superheater, a medium-pressure bypass regulating valve, a condenser, a medium-pressure steam regulating valve, a reheater and a steam turbine, the medium-pressure water extraction pump is connected with the superheater through a pipeline, the water outlet of the superheater is connected with the condenser and the medium-pressure cylinder of the steam turbine through pipelines, the medium-pressure bypass regulating valve is arranged on the pipeline corresponding to the condenser, the medium-pressure steam regulating valve is arranged on the pipeline corresponding to the steam turbine, and the reheater is arranged between the medium-pressure steam regulating valve and the steam turbine. The control system and method for medium-pressure steam admission in the gas-steam combined cycle unit can maintain the medium-pressure drum liquid level in a safe liquid level range through the medium-pressure feedwater regulating valve, realize automatic control during medium-pressure steam admission through the opening and closing of the medium-pressure steam regulating valve and the medium-pressure bypass regulating valve, and reduce misoperation.

The invention relates to the technical field of heat pump systems, in particular to an enhanced vapor injection control method based on electromagnetic induction heating and a heat pump system. The enhanced vapor injection control method based on electromagnetic induction heating comprises the steps that the environment temperature of a heat pump system is obtained through a control unit; the control unit compares the environment temperature with a preset starting threshold value and judges whether the electromagnetic induction heating device needs to be started or not. And if the electromagnetic induction heating device needs to be started, the control unit calculates the target heating power according to the operation parameters and through a pre-stored mapping relation. The control unit controls the electromagnetic induction heating device to operate at the target heating power according to the target heating power, and the refrigerant flowing through the enhanced vapor injection branch is heated; and the heated refrigerant forms medium-pressure enthalpy-increasing gas with stable superheat degree, and the medium-pressure enthalpy-increasing gas is injected into an enhanced vapor injection port of the compressor. The enhanced vapor injection control method based on electromagnetic induction heating solves the problems that a traditional economizer is low in heat exchange efficiency in a low-temperature environment, and the energy efficiency coefficient of a heat pump system is low.

This invention relates to the field of cogeneration technology, specifically to a supercritical (subcritical) reheat back-pressure cogeneration system and its control method. The system includes a steam generation module, an expansion and power generation module, and a steam extraction module. The steam generation module generates main steam based on supercritical or subcritical parameters, and after reheating the reflux exhaust steam, a portion is supplied to high-pressure industrial steam. The expansion and power generation module includes a high-pressure cylinder and an intermediate-pressure cylinder of a turbine with supercritical or subcritical parameters. The high-pressure cylinder receives the main steam, performs work, and then reheats the exhaust steam. The intermediate-pressure cylinder receives a portion of the reheated steam and performs work. The back-pressure exhaust steam is supplied to low-pressure industrial steam. The steam extraction module includes a steam regulating unit that extracts a portion of steam from the intermediate-pressure cylinder; one portion is supplied to intermediate-pressure industrial steam, and the other portion is sent to water preheating. This invention can eliminate cold-end losses, achieve high parameters, reheat cycle, and three-stage steam supply, solving the problems of low initial parameters, lack of reheat, and insufficient steam supply capacity.

This invention provides a segmented cross-bridge steam seal, method, and steam turbine for reducing steam leakage, applicable to steam turbines. The steam turbine includes an intermediate-high pressure outer cylinder, an integral high pressure inner cylinder, an intermediate pressure inner cylinder, a segmented cross-bridge steam seal, and an intermediate-high pressure rotor. The integral high pressure inner cylinder and intermediate pressure inner cylinder are both located within the intermediate-high pressure outer cylinder, and the segmented cross-bridge steam seal is located between the integral high pressure inner cylinder and the intermediate pressure inner cylinder. The segmented cross-bridge steam seal has several cross-bridge steam seal outlet rectifier chambers, and the integral high pressure inner cylinder includes several high pressure cylinder extraction chambers. The several cross-bridge steam seal outlet rectifier chambers are respectively connected to the several high pressure cylinder extraction chambers. In this invention, the main steam leaking from the segmented cross-bridge steam seal enters the integral high pressure inner cylinder through the make-up steam chamber, realizing the reuse of the main steam leaking from the segmented cross-bridge steam seal. This solves the problems of large steam leakage from the cross-bridge steam seal, waste of heat energy in high-quality steam, and high overall heat consumption rate of the turbine.

This application discloses a control method for a BSG medium-pressure hybrid commercial refrigerated truck, aiming to solve the problems of frequent ineffective start-stop of the BSG, inefficient operation of the internal combustion engine, high energy consumption, and short equipment life caused by neglecting the thermal inertia of the cargo compartment in the prior art. The method includes: real-time acquisition of cargo compartment temperature, ambient temperature, door status, and battery SOC; setting a safe temperature bandwidth according to the type of cargo; predicting the temperature rise rate and calculating the time margin based on historical door opening frequency and ambient temperature when the compartment temperature exceeds the upper limit; delaying cooling if the time margin is greater than the minimum safe time; determining whether the internal combustion engine is in the high-efficiency power generation range before starting, and starting the BSG and compressor only when the high-efficiency range is reached or the time margin is insufficient; shutting down the compressor and entering low-power monitoring when the compartment temperature drops to the lower limit.

The present application provides a vapor compression heat pump and compression-ejection heat pump system, belonging to the technical field of heat pump. The compressor has a refrigerant vapor passage connected with a heat supplier, the heat supplier also has a condensate pipeline connected with a distribution chamber through a nozzle, the distribution chamber has a refrigerant vapor passage connected with the high-pressure steam inlet of an ejector, the distribution chamber also has a condensate pipeline connected with an evaporator through a throttle valve, the evaporator also has a refrigerant vapor passage connected with the low-pressure steam inlet of the ejector, the ejector also has a medium-pressure refrigerant vapor passage connected with the compressor; the heat supplier also has a heated medium passage connected with the outside, the evaporator also has a low-temperature heat medium passage connected with the outside, forming a vapor compression heat pump.

The present invention relates to an A-CAES system comprising: a compressed-air storage device for storing air; a low-pressure compressor unit for compressing supplied air to a first air pressure and a first air temperature; a high-temperature heat exchanger system containing a high-temperature heat storage medium for cooling the air compressed in the low-pressure compressor unit, this cooling being brought about by the heat storage medium taking up heat of compression of the air, wherein the high-temperature heat storage medium is heated to a first heat-store temperature with a first heat-store pressure by the taking-up of the heat of compression; a medium- or high-pressure compressor unit for compressing the air downstream of the high-temperature heat exchanger system in further compression stages to a store-air pressure; a low-temperature heat exchanger system containing a low-temperature heat storage medium for cooling the air from the medium- or high-pressure compressor unit to a store-air temperature by taking up heat of compression of the air compressed in the medium- or high-pressure compressor unit, wherein the low-temperature heat storage medium is heated to a second heat-store temperature with a second heat-store pressure by the taking-up of the heat of compression of the air; and an air pipeline system, which connects the following in the flow direction: the low-pressure compressor unit to the high-temperature heat exchanger system, the high-temperature heat exchanger system to the medium- or high-pressure compressor unit, the medium- or high-pressure compressor unit to the low-temperature heat exchanger system and the low-temperature heat exchanger system to the compressed-air storage device, in order to supply and store the air in the compressed-air storage device with the store-air pressure and the store-air temperature.

The utility model relates to a medium-pressure direct-current double-system air conditioner for an armored car, which comprises two groups of compression refrigeration systems, exhaust of compressors of the compression refrigeration systems sequentially passes through micro-channel heat exchangers, liquid accumulators, filters, expansion valves and evaporator return air to be connected with the compressors, and the micro-channel heat exchangers of the two groups of compression refrigeration systems share an axial flow fan. The evaporators of the two compression refrigeration systems share a centrifugal fan, the axial flow fan and the centrifugal fan are both driven by a direct current motor through a belt, and the compressor is driven by a medium-voltage direct current motor. One compression refrigeration system is standby, and the other compression refrigeration system is used, so that cold supply is effectively guaranteed; the fan is driven by a belt through a direct-current motor, the compressor is directly driven by the direct-current motor, and the fan is adaptive to a vehicle-mounted medium-voltage direct-current power supply of the armored vehicle, can meet various performance requirements of flexible regulation and control, stable driving, no influence of instantaneous load fluctuation and equipment miniaturization, and has the advantages of dynamic matching, reduction of invalid energy consumption, controllable heating value, stable operation, low noise, high reliability and the like. And the service life is long.

A hydrolyzer outfeed system includes a hydrolyzer having a hydrolyzer outlet, an intermediate pressure chamber having a pressure chamber inlet and a pressure chamber outlet, and an expansion chamber. A pressure chamber inlet valve selectively communicates the hydrolyzer outlet with the pressure chamber inlet, the inlet valve having an inlet valve cross-sectional area in a fully open position. A pressure chamber outlet valve selectively communicates the pressure chamber outlet with the expansion chamber. The pressure chamber outlet valve has an outlet valve cross-sectional area in a fully open position. The outlet valve cross-sectional area is smaller than the inlet valve cross-sectional area.

The integrator and expansion valve integrated heat management structure comprises an integration tank and two valve element assemblies, and each valve element assembly comprises a valve element, a driving motor and a driver; a gaseous refrigerant outlet is formed in the top of the integrated tank, and a liquid refrigerant is contained in the integrated tank; a high-pressure liquid refrigerant inlet and a medium-pressure liquid refrigerant outlet are formed in the bottoms of the two opposite side walls of the integrated tank correspondingly and are both located below the liquid level of liquid refrigerants. A first straight pipe used for being connected with a condenser is arranged on the outer edge of the high-pressure liquid refrigerant inlet, and a second straight pipe used for being connected with an evaporator is arranged on the outer edge of the medium-pressure liquid refrigerant outlet. The first straight pipe and the second straight pipe are each provided with a valve element hole used for installing the valve element and a motor installation structure used for installing the driving motor, and the upper portion of the valve element is located in the valve element hole. Installation can be simplified, the occupied space is reduced, and the cost and the refrigerant leakage risk are reduced.

In an apparatus (11) for conveying a leaking gas (1) leaking from an industrial plant (8) into a receiving body (9) pressurized to a predetermined receiving pressure (Pr), a first compression stage (100), a second compression stage (200) are provided, as well as a transit container (150) pneumatically connected downstream of the first compression stage (100) and upstream of the second compression stage (200). The first compression stage (100) comprises a gas collecting means (C) for collecting the leaking gas (1), a collection container (10) pneumatically connected thereto and configured to form a collected leaking gas (1a) therein, a first-stage compressor (20) having a suction side connected to the collection container (10) and a delivery side connected to the transit container (150) and arranged to compress the collected leaking gas (1a) to an intermediate pressure (P), resulting in a compressed leaking gas (1b) in the transit container (150); a first control unit (40), configured to maintain the suction pressure (Ps) of the first-stage compressor (20) at a target value between the atmospheric pressure (Patm) and a predetermined minimum pressure (Pm). The second compression stage (200) comprises an inlet duct (59) from the transit container (150); an outlet duct (69) pneumatically connected to the receiving body (9); a second-stage compression chamber (68) arranged between the inlet duct (59) and the outlet duct (69); a compression piston (67) configured to compress the second-stage compression chamber (68) so as to convey a further-compressed leaking gas (1c) into the outlet duct (69); an actuation group (70) of the compression piston (67). The actuation group (70) includes a pressure sensor (71a) arranged to measure the pressure (P) of the compressed leaking gas (1b) that is present in the transit container (150) and to output a pressure signal (73) related to the measured pressure (P), and is configured to actuate the compression piston (67) based on the pressure value (P) of the gas present in the transit container (150).