101 results about "Brayton cycle" patented technology

The present application relates to a flue gas low-heat recovery system based on reverse Brayton cycle heat pump energy storage and a control method thereof, and belongs to the technical field of heat pump energy storage peak shaving of heat engine units. The system comprises a boiler module, a high-heat cycle module and a low-heat cycle module, and realizes the hierarchical utilization of high-grade and low-grade flue gas low-heat through collaborative operation. The flue gas of the boiler module is coupled with the high-heat cycle module through a molten salt heat exchanger, and the low-heat cycle module utilizes the low-heat of the flue gas to generate power through an organic Rankine cycle. The high-heat cycle module stores electric energy and thermal energy during off-peak hours and releases energy during peak hours, thereby improving the peak shaving capacity of the system. The present application realizes the deep integration of efficient recovery of flue gas low-heat and energy storage technology, significantly improves the energy utilization efficiency, system flexibility and economy, and has environmental protection and sustainable development benefits.

The application relates to the field of supercritical CO2 Brayton cycle, and provides a supercritical CO2 dry gas sealed closed heat management system based on a vortex tube, which comprises a vortex chamber connected with a compressor working medium outlet through a vortex tube gas inlet pipeline, hot gas flowing out of a hot end pipe at a higher temperature enters a compressor end sealing cavity through a vortex tube hot end gas outlet pipeline; the compressor end sealing cavity is connected with a compressor medium outlet through a compressor end sealing cavity gas outlet gap, so that working medium flowing in the compressor end sealing cavity flows back to the vortex tube gas inlet pipeline; a vortex tube cold end gas outlet pipeline is connected with a cooling cavity gas inlet hole, so that cold gas flowing out of the cold end pipe at a lower temperature enters the cooling cavity; and the cooling cavity gas outlet hole is connected with the compressor medium outlet, so that working medium flowing in the cooling cavity flows back to the vortex tube gas inlet pipeline. The application has important significance for efficient, low-leakage and stable operation of a supercritical CO2 Brayton cycle power generation turbine unit.

The application discloses a kind of based on Brayton cycle's combined heat and power system, it is related to flue gas waste heat technical field, wherein, based on Brayton cycle's combined heat and power system includes power generation cycle system, steam subsystem and flue gas subsystem;Power generation cycle system includes boiler and carbon dioxide shunt, the output end of carbon dioxide shunt is connected with first power generation pipeline and second power generation pipeline in parallel, first power generation pipeline and second power generation pipeline are connected boiler, wherein second power generation pipeline is provided with economizer;Steam subsystem includes steam generator;Flue gas subsystem includes flue gas pipeline, flue gas pipeline is connected with flue gas shunt after boiler, flue gas shunt is connected with first flue gas pipe and second flue gas pipe in parallel, first flue gas pipe is used for economizer heating, and second flue gas pipe is used for steam generator heating;The technical scheme provided in the application aims at increasing the functionality of system.

This invention discloses a high-pressure resistant hull cooler and cooling method for an underwater vehicle, comprising a cooling core and pressing plates at both ends thereof. The cooling core includes a plurality of sequentially sealed and stacked cooling plates. The cooling plates are hollow structures designed to be fitted onto a supercritical carbon dioxide Brayton cycle system. At least one side of each cooling plate has a cooling channel arranged circumferentially along the cooling plate, forming a circulation path with the heat source of the supercritical carbon dioxide Brayton cycle system.

The invention discloses a supercritical CO2 centrifugal compressor and turbine performance test combined test bench system and method. The device is mainly composed of a compressor, a turbine, an electric heater, a cooler, a surge tank, a CO2 storage tank, valves and pipelines, a motor drives the compressor through a gearbox and is connected with a rotating shaft of the turbine through a clutch, and a main circulation loop is sequentially connected with the compressor, the turbine, the cooler, the surge tank and the electric heater in series. Through cooperation of bypass valve switching, clutch separation and reunion and a system control strategy, seamless switching of five test modes can be achieved without shutdown or pipeline disassembly and assembly, and the five test modes comprise a turbine connection and independent compressor performance test, a turbine performance test and a key component performance test. And a complete supercritical CO2 Brayton cycle system stable operation and control strategy verification test is carried out. The system has the characteristics of high efficiency and high test continuity, and provides a multifunctional and low-cost comprehensive test platform for research and development of a supercritical CO2 power device.

The invention provides a performance test device for an air Brayton cycle power system. The performance test device comprises a test prototype (100), and the test prototype (100) comprises an air compressor (101) and a turbine (102); the high-altitude and high-cold simulation system comprises an air pressure simulation tank (201), a vacuum pump (202), an isolating valve (203), a refrigerating machine (204) and a cooler (205), the vacuum pump (202) and the isolating valve (203) are respectively connected to the air pressure simulation tank (201) and used for adjusting and maintaining the target pressure in the air pressure simulation tank (201), and an outlet of the air pressure simulation tank (201) is connected to an inlet of the air compressor (101) through the refrigerating machine (204) in sequence through a pipeline and used for providing a low-temperature and low-pressure working medium for the air compressor (101); an outlet of the turbine (102) is connected to an inlet of the air pressure simulation tank (201) through a pipeline via the cooler (205), and the turbine (102) is used for cooling the working medium after acting and enabling the working medium to flow back to the air pressure simulation tank (201). The device can test the performance of a test prototype in special environments such as high altitude and high cold.

This invention belongs to the field of supercritical carbon dioxide property monitoring and discloses a method and system for predicting the thermal properties of CO2 in an SCO2 Brayton cycle system. The method includes: acquiring index data of the CO2 working fluid as it flows through a preset property measurement module; calculating the static pressure data within the Coriolis density meter based on the readings of a Coriolis density meter, a temperature sensor, and a pressure sensor; determining the phase state of the CO2 working fluid based on the static pressure data and the temperature sensor reading; and obtaining the predicted results of preset thermal property indicators of the CO2 working fluid based on the phase state of the CO2 working fluid and in conjunction with the static pressure data and the Coriolis density meter reading or the temperature sensor reading. This invention can accurately predict the thermal property parameters of the CO2 working fluid, providing reliable data support for the precise control of the precooler, thereby ensuring the safe and stable operation of the entire SCO2 Brayton cycle system.

This invention discloses a thermodynamic optimization method for a lead-bismuth stack coupled supercritical carbon dioxide Brayton cycle system. The method includes seven steps: 1. Initialization of the Brayton cycle system's thermodynamic parameters; 2. Dividing the Brayton cycle system into different modules; 3. Calculating the supercritical carbon dioxide thermodynamic parameters of the hot-end module; 4. Calculating the supercritical carbon dioxide thermodynamic parameters of the cold-end module; 5. Calculating the supercritical carbon dioxide thermodynamic parameters of the regenerator module; 6. Optimizing the Brayton cycle system configuration; 7. Calculating the optimal configuration thermodynamic parameters of the Brayton cycle system. This invention enables the coordinated calculation and optimization of the configuration, parameters, and stress of a lead-bismuth stack coupled supercritical carbon dioxide Brayton cycle system, significantly shortening the design cycle and improving the thermal efficiency and operational reliability of the system.

The invention relates to a thermal and electric conversion system of a thermal power battery based on a closed Brayton cycle. The invention relates to the field of thermal power systems, and aims to overcome the defects of low energy density, large volume, large weight and the like of an existing battery system and overlarge mass-volume ratio of a power system. The device comprises an energy-work conversion unit, a heat source, power generation equipment, a partition plate, an outer package, a pre-cooling pipeline and the like. The energy-work conversion unit is indirectly connected with a heat source through a heat exchange pipeline, heat generated by the heat source transmits a working medium to do work, the energy-work conversion unit is connected with power generation equipment through a power shaft and converts mechanical energy into electric energy, and the power generation equipment is connected with an external connection point through a wire pipeline to achieve external output of the electric energy. The outer packaging structure further communicates with a pre-cooling pipeline, and the energy-work conversion unit is connected with the pre-cooling pipeline and used for cooling the working medium. And the energy-work conversion unit, the heat source, the power generation equipment, the partition plate and the pre-cooling pipeline are respectively mounted in the outer package to form an integral system. The invention is applied to the field of thermal and electric conversion of thermal power batteries.

The disclosure provides a hybrid energy storage system, wherein the Brayton cycle unit comprises a first compressor, a first air-salt heat exchanger and an air-air heat exchanger forming a circulation loop, the cold side of the first air-salt heat exchanger is provided with a first inlet and a first outlet, the cold side of the air-air heat exchanger is provided with a second inlet and a second outlet, and the second inlet is used for air entering; the energy storage unit comprises a molten salt heat storage unit, the molten salt heat storage unit is connected with the first inlet and the first outlet to form a circulation loop; a Rankine cycle unit is connected with the molten salt heat storage unit to generate power by obtaining heat; and the processing unit comprises a first unit, the first unit comprises a compression section and an expansion section connected with the compression section, the compression section is connected with the second outlet, has a gas compression function, and is connected with the molten salt heat storage unit to deliver first temperature heat to the molten salt heat storage unit and second temperature compressed air smaller than the first temperature to the expansion section, and the expansion section has a gas expansion function to generate power.

The invention belongs to the technical field of nuclear energy power generation, and discloses an advanced high-temperature reactor coupled Brayton cycle power generation system which comprises an advanced high-temperature reactor subsystem and a Brayton cycle subsystem, the advanced high-temperature reactor subsystem comprises an advanced high-temperature reactor, the outlet temperature of helium is 750-1000 DEG C, and the outlet temperature of nitrogen is 750-1000 DEG C; the Brayton cycle subsystem comprises a compression device, a heat regeneration device, a turbine device and a cooling device, the temperature of carbon dioxide fluid at an inlet of the turbine device is 500-700 DEG C, the optimal operation state of the Brayton cycle subsystem can be achieved, the heat-work conversion efficiency is improved, and even if carbon dioxide enters a reactor core of an advanced high-temperature reactor due to leakage of a heat exchanger, the carbon dioxide can be recycled. And moreover, the supercritical fluid does not generate phase change in the heat exchanger, so that the operation safety is improved.

The invention relates to a heat transfer module (M) for a liquid-metal-cooled, loop-type fast neutron nuclear reactor (1), comprising an expansion tank (20), a heat exchanger (21) and an electromagnetic pump (22), the module alone forming a heat exchange loop between the primary liquid sodium circuit and the secondary circuit containing a gas, such as nitrogen, which is a closed Brayton cycle.

This invention belongs to the field of cryogenic refrigeration technology and discloses a cryogenic refrigeration system coupled with a heat pump. The system includes a reverse Brayton refrigeration cycle and a heat pump cycle. The refrigeration cycle includes a compression unit, a refrigeration side channel of a heat coupling unit, an expansion unit, and a cold user connected in sequence. The heat pump cycle includes a heat pump compression unit, a condensation heat release unit, a throttling unit, and a heat pump side channel of the heat coupling unit connected in sequence. The heat coupling unit can transfer the heat from the high-temperature refrigerant discharged from the compression unit to the heat pump working fluid, simultaneously realizing the recovery of waste heat from compression and the pre-cooling of the refrigerant. This invention abandons the direct discharge of waste heat, solving the problem of traditional systems focusing only on single refrigeration and insufficient utilization of low-grade energy, improving energy utilization efficiency, eliminating the need for an additional independent cooling system, simplifying the structure, and reducing equipment investment and operating energy consumption. While retaining the advantages of reverse Brayton cycle cryogenic refrigeration, it achieves synergistic energy utilization and has good engineering adaptability.

The invention provides a supercritical carbon dioxide Brayton cycle isothermal variable load system and method, and belongs to the field of supercritical carbon dioxide Brayton cycle power generation. The supercritical carbon dioxide Brayton cycle isothermal variable load system comprises a compressor, a heat regenerator, a heat source heat exchanger, a turbine, a precooler and a surge tank; a cold side outlet of the heat regenerator is communicated with an inlet of the heat source heat exchanger, an outlet of the heat source heat exchanger is communicated with an inlet of the turbine, an outlet of the turbine is communicated with a hot side inlet of the heat regenerator, a hot side outlet of the heat regenerator is communicated with an inlet of the precooler, and an outlet of the precooler is communicated with an inlet of the surge tank. And an outlet of the surge tank is communicated with an inlet of the compressor. According to the isothermal variable load system, the load can be quickly changed without changing the inlet temperature of the turbine, the isothermal variable load is realized, the temperature change requirements on the turbine and an inlet pipeline are reduced, the thermal shock is reduced, and the thermal fatigue damage of equipment and a high-temperature pipeline is reduced.

The invention discloses a Modelica language-based supercritical carbon dioxide Brayton cycle system modeling simulation method, which comprises the following steps of: constructing a system key equipment model according to a mathematical physical equation of equipment characteristics; forming a flow-pressure iterative solution scheme of the system according to the key equipment model and the volume model of the system; all the equipment models are connected according to a design scheme, and equipment structure parameters and simulation iteration initial values are set to form a system simulation model; setting a simulation interval, an output interval and a simulation algorithm on the MWORKS platform; and performing system model inspection and simulation analysis according to the set system simulation model to obtain the operation characteristics of the supercritical carbon dioxide Brayton cycle system. According to the method, rapid reconstruction of a system topological structure, convenient adjustment of equipment parameters and efficient analysis of system characteristics are realized, and reliable data support is provided for engineering design and optimization.

This invention discloses a dual-mode system for high-temperature waste heat recovery of a solid oxide fuel cell coupled with ammonia decomposition for hydrogen production. The system includes a solid oxide fuel cell, an open-loop air Brayton cycle, an ammonia decomposition reactor, and a waste heat hydrogen production assembly. Waste heat utilization of the solid oxide fuel cell exhaust gas is achieved by connecting an air Brayton cycle hot-end heat exchanger in parallel with the ammonia decomposition reactor. High-pressure air from the compressor outlet is heated in the hot-end air heating zone before entering the turbine to perform work. The air after work is either recovered as waste heat or directly discharged into the atmosphere, forming an open-loop Brayton cycle. An ammonia storage tank is connected to the ammonia decomposition reactor via valves. Ammonia gas, after being preheated by reheating, enters the ammonia decomposition reactor for catalytic decomposition. The resulting mixed gas is then heat-exchanged and separated to obtain hydrogen. The system switches between the open-loop air Brayton cycle thermoelectric conversion mode and the ammonia catalytic decomposition hydrogen production and energy storage mode by controlling the flow rates of the working fluid entering the air heating zone and the ammonia decomposition reactor, ensuring the continuous, stable, and safe operation of the system.

The invention relates to a deep utilization method and system for waste heat of high-temperature tail gas with multi-temperature-zone collaborative energy storage in the technical field of waste heat utilization and energy storage in ferrous metallurgy, and the system comprises a high-temperature flue gas system which is used for collecting, pretreating and conveying high-temperature flue gas; the thermochemical heat storage system is used for introducing high-temperature flue gas to convert heat energy into chemical energy for storage or introducing air to convert chemical energy into heat energy for release, the high-temperature flue gas is cooled to become first-temperature flue gas, and the air absorbs heat to become first-temperature air; the fused salt heat storage system is used for introducing first-temperature flue gas to store heat through sensible heat or release the stored heat; the Brayton cycle power generation system is used for generating power by using the first temperature air; and the Rankine cycle power generation system is used for generating power by using the fused salt heat storage system. According to the method and system, multi-temperature-zone stepped recovery of the electric arc furnace fluctuation tail gas can be achieved, graded energy supply and combined power generation from high temperature to medium and low temperature can be achieved, and the energy utilization depth and stability of the electric arc furnace strong fluctuation tail gas are remarkably improved.

The application discloses a nuclear power device control system and method coupled with a heat pipe reactor and an sCO2 Brayton cycle, including a rotating shaft rotating speed control system and method, which maintains the rotating shaft rotating speed constant by adjusting the working medium flow entering the turbine, so as to ensure the power supply quality of the whole system; a compressor inlet temperature and inlet pressure control system and method, which respectively maintains the compressor inlet temperature and inlet pressure constant by adjusting the seawater flow and the pressure tank pressure, so as to ensure that the temperature and density of the working medium at the compressor inlet are in a supercritical state; and an intermediate heat exchanger outlet temperature control system and method, which adjusts the reactor power by controlling the core reactivity, and then maintains the intermediate heat exchanger outlet temperature constant. The application can provide a reference for the control system design of a high-efficiency compact nuclear power device coupled with a heat pipe reactor and a supercritical carbon dioxide Brayton cycle.

The invention relates to the technical field of air Brayton cycle power generation, and particularly discloses a Brayton cycle power generation system which comprises a stator part and a rotor assembly. The power generation system further comprises a cooling channel and a cavity. Wherein the stator piece, the rotor assembly, the cooling channel and the cavity form a closed system, and the system can achieve a power generation function. The power generation system is compact in structure, a lubricating oil system and an external cold source do not need to be configured, the shaft end sealing problem does not exist, and the power generation system has the technical characteristics of being simple, light in weight and high in integration degree and is suitable for a movable power conversion device system.

The invention provides an integrated heat exchange module for a closed Brayton cycle. The integrated heat exchange module comprises a pressure-bearing shell and an integrated heat exchanger unit. The pressure-bearing shell is provided with a plurality of groups of first working medium flange interfaces which comprise a waste heat gas outlet flange and a first multi-channel integrated flange; the integrated heat exchanger unit comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, the second heat exchanger and the third heat exchanger form an integral cooling structure, and the integrated heat exchanger unit is provided with a waste heat gas inlet flange and a second multi-channel integrated flange which are used for collecting gas side inlets and outlets. Two groups of flange interfaces are directly butted and fastened, so that the sealing connection of working medium flow paths is realized, and a traditional dispersion pipeline is replaced. The module is compact in structure, reduces the number of pipelines and remarkably saves space; meanwhile, local resistance of the elbow is eliminated, and system efficiency is improved; and assembly and disassembly are convenient, and overall modular rapid assembly and maintenance are supported. The invention provides an efficient and compact heat-power conversion integrated solution for an advanced nuclear energy and space power system.

The application relates to a low-grade waste heat utilization design method based on a medium-temperature compressed energy storage system, which comprises the following steps: adding a supercritical CO2 Brayton cycle as a system bottom cycle in the medium-temperature compressed air energy storage system, arranging a simulation analysis model for establishing the low-grade waste heat utilization of the medium-temperature compressed energy storage system; according to the simulation analysis model, a target function is established with the system total cycle efficiency eta en as an optimization target; in the case of meeting preset constraint conditions, an interpolation method is used to solve the target function, so that the parameters of CO2 are obtained, the constraint conditions include energy conservation constraint, heat exchanger two-side temperature constraint and CO2 transcritical state constraint; then, the specific parameters and efficiency of the bottom cycle are determined according to the parameters of CO2, and the maximum efficiency of the total cycle is obtained. The application reduces the use of heat exchangers, and further reduces heat exchange loss, so that energy is efficiently utilized.

The invention discloses a coal fire sCO2 power generation system based on modular integration, and belongs to the technical field of coal fire heat energy utilization, and the coal fire sCO2 power generation system comprises a power generation module which comprises an sCO2 Brayton cycle unit and is used for converting coal fire heat energy into electric energy; the underground heat exchange well group module comprises a plurality of heat exchange wells inserted into a coal fire area and is used for transferring coal fire heat energy to the sCO2 working medium, and the arrangement positions and depths of the heat exchange wells are differentially set according to the temperature distribution characteristics of the coal fire area; and the self-adaptive regulation and control module comprises a controller, and the controller is configured to monitor the temperature distribution characteristics of the coal fire area in real time and dynamically adjust the thermal load distribution of the underground heat exchange well group module and the operation parameters of the power generation module based on the dynamic change of the temperature distribution characteristics so as to maintain the stability of the power generation efficiency. The method effectively overcomes the defect that a traditional power generation technology is insufficient in adaptability in a coal fire scene, and the overall power generation efficiency and operation stability of the system are remarkably improved.

The invention provides an indirect cooling-regenerative power generation system based on a liquid hydrogen fuel turbofan engine, belongs to the technical field of aviation systems, and aims at solving the problems that in an existing aviation propulsion system, the power utilization requirement is continuously increased, and the energy utilization efficiency is limited. The system comprises an air inlet channel, a fan, a low-pressure compressor, an intercooler, a high-pressure compressor, a combustion chamber, a high-pressure turbine, a low-pressure turbine, a heat regenerator, a core exhaust nozzle, an outer culvert nozzle and a helium closed Brayton cycle power generation subsystem coupled with an engine. The power generation subsystem comprises a liquid hydrogen fuel tank, a cooler, a helium compressor, a heat exchanger, a helium turbine and a power generator. Liquid hydrogen cold energy utilization, intermediate cooling, exhaust waste heat recovery and an airborne power generation system are integrated, cooperative operation of propulsion and power generation is achieved, the overall energy utilization efficiency and fuel economy of the engine are effectively improved, and the system is suitable for a low-carbon, efficient and electrified aviation propulsion system.

The application discloses a kind of pry dress formula LNG cold energy, pressure energy recycling system and method, including LNG gas supply device, cold energy recovery power generation device and pressure energy recovery power generation device, can quickly realize LNG gas supply and power generation.LNG gas supply device includes LNG storage tank, cryogenic pump, heat exchanger, pressure energy recovery device, pressure sensor, temperature sensor, odorizing device, cold energy recovery power generation device includes two-stage nitrogen gas brayton cycle device, pressure energy recovery power generation device includes bypass valve, flow regulating valve, flow meter, coaxial two turbine expanders, permanent magnet generator, air temperature type vaporizer, pressure regulating valve.The application is used for tank car transportation LNG, user needed in emergency supply, and utilizes LNG cold energy, pressure energy and other energy power generation, can effectively recover the residual pressure of LNG, cold energy, and improve the comprehensive utilization efficiency of LNG energy, is conducive to the effect of energy saving and emission reduction.

The application provides a controllable nuclear fusion helium cryogenic system coupled with liquid air energy storage, belonging to the cross field of controllable nuclear fusion device cryogenic technology and large-scale energy storage technology, comprising an energy storage subsystem, an energy release subsystem, an 80K helium gas circulation subsystem, a cooling oil subsystem and a cold supplementing subsystem; the energy storage subsystem is used for liquefying ambient air and storing the ambient air in a liquid air storage tank, and shares multiple heat exchangers with the 80K helium gas circulation subsystem; the energy release subsystem takes liquid from the liquid air storage tank and exchanges heat with the 80K helium gas circulation subsystem; the 80K helium gas circulation subsystem drives helium gas through a cold compressor to ensure continuous cooling of a superconducting magnet cold shield; the cooling oil subsystem is used for cooling compressed air of the energy storage subsystem; and the cold supplementing subsystem is a closed inverse Brayton cycle, and cold energy of the cold supplementing subsystem is used for re-liquefying main air flow to compensate for system cold energy loss. The application provides a passive cold energy backup structure for the 80K cryogenic system, which does not depend on power grid power supply.

The invention discloses a supercritical carbon dioxide cycle self-adaptive system and an adjusting method thereof, and belongs to the technical field of power generation systems. The system comprises a supercritical CO2 Brayton cycle subsystem, a working medium adjusting and switching subsystem and a monitoring control subsystem, the working medium adjusting and switching subsystem is selectively communicated with the cycle subsystem through a switchable flow path control unit, and the working medium adjusting and switching subsystem comprises a working medium separation and purification module, a pure component storage tank set and a working medium preparation and injection unit. Separation, purification, storage and proportional injection of a mixed working medium can be achieved, the monitoring control subsystem collects environment temperature and heat source parameters, and a controller automatically determines the type and proportion of a target working medium according to the environment temperature and the heat source parameters, completes working medium switching and dynamically adjusts the flow of the working medium. The problem that in the prior art, working medium types and proportions cannot be rapidly switched according to day and night environment temperature and seasonal fluctuation is solved, separation and recycling of mixed working medium components are achieved, and heat source parameter changes can be rapidly responded.

This invention provides a combined heat and power system based on a Brayton cycle device, belonging to the field of combined heat and power technology. An external gas channel connects to an expander via a compressor and a heat source heat exchanger. The expander also has a gas channel connecting to a high-temperature generator and a steam generator before connecting to the outside. The generator connects to the high-temperature generator via a solution pump, a solution heat exchanger, and a second solution heat exchanger. The high-temperature generator connects to an absorber via the second solution heat exchanger. The absorber connects to the generator via a solution heat exchanger. The generator connects to a condenser. The condenser connects to an evaporator via a booster pump. The high-temperature generator connects to a high-temperature condenser. The high-temperature condenser connects to the evaporator via the generator and a throttle valve, and then to an ejector via the second booster pump and a steam generator. The evaporator connects to the ejector. The ejector connects to the absorber. The heat source heat exchanger, absorber, high-temperature condenser, condenser, and evaporator are connected to the outside via heat source medium channels, forming a combined heat and power system based on a Brayton cycle device.

The application provides a heat and power cogeneration system based on a Brayton cycle device, and belongs to the technical field of power, refrigeration and heat pump. The system comprises a gas passage, a compressor, a heat source heat exchanger, an expander, a generator and a steam generator, wherein the gas passage is connected with the outside after the compressor, the heat source heat exchanger, the expander, the generator and the steam generator; the absorber has a dilute solution pipeline connected with the generator through a solution pump and a solution heat exchanger; the generator has a concentrated solution pipeline connected with the absorber through the solution heat exchanger; the generator is connected with the condenser; the condenser is connected with the evaporator through a throttle valve; the evaporator is connected with the low-pressure steam inlet of an ejector; the condenser is connected with the steam generator through a booster pump; the steam generator is connected with the high-pressure steam inlet of the ejector; the ejector is connected with the absorber; the heat source heat exchanger has a heat source medium passage; the absorber and the condenser have heated medium passages; the evaporator has a medium-temperature heat medium passage, which are respectively connected with the outside; the expander is connected with the compressor and transmits power, thereby forming the heat and power cogeneration system based on the Brayton cycle device.

The application discloses a kind of brayton cycle compressor test system and test method for nuclear heat propulsion, the test system in motor rotation is driven high-speed gear box rotation by diaphragm coupling, high-speed gear box is driven high-speed rotation of compressor by first corrugated pipe coupling, torque instrument, second corrugated pipe coupling, wherein torque instrument can be collected and displayed with the real-time running torque value, speed value of compressor;Compressor inlet is connected with atmosphere, after gas medium passes through compressor, from the outlet of compressor, flowmeter, electric regulating valve, finally, through muffler, it is discharged to atmosphere.The application can obtain characteristic parameters under any flow, pressure, speed condition, using this compressor test system to carry out test, can obtain ideal and actual compressor aerodynamic performance, to provide basic support for the development of nuclear heat propulsion engine.