Multifunctional water vapor compressor test system

Abstract

The utility model relates to the technical field of water vapor compressors, in particular to a multifunctional water vapor compressor testing system. The system comprises a heat pump subsystem, a water vapor circulation subsystem, a water passage subsystem and a water circulation subsystem. In the compression process of a steam compressor, the pressure and temperature in a compression cavity cause fluctuation of the exhaust flow of the compressor, so that a common gas flowmeter cannot accurately measure the flow of steam. For evaluating the adiabatic efficiency of the water vapor compressor, the data accuracy of the flow is crucial. The multifunctional steam compressor test system provided by the utility model can simply and accurately measure the mass flow rate and the adiabatic efficiency of the steam compressor, makes up the problem of inaccurate measurement of the flowmeter caused by fluctuation of the flow rate and the temperature in the steam compression process, and is convenient to accurately measure the comprehensive performance of the steam compressor; and the technical development of the water vapor compressor is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of water vapor compressors, in particular to a multifunctional water vapor compressor testing system. Background Art

[0002] Vapor compressors are widely used in industrial refrigeration, air conditioning, heat pumps, and other fields, and have broad application prospects. Vapor compressors have attracted attention in the industry due to their high temperature rise and stable operation.

[0003] Steam compressors present certain technical difficulties in manufacturing and industrial application, mainly reflected in the difficulty in material selection and processing, complex sealing technology, difficulty in matching dynamic and static components, and difficulty in system integration.

[0004] Therefore, steam compressor manufacturing processes require strict control and rigorous performance testing to ensure product quality. Adiabatic coefficient and suction and exhaust performance are key indicators for evaluating steam compressors, impacting comprehensive evaluations of energy savings, carbon emissions, and energy consumption throughout the system during industrial applications. Process parameters, vibration, noise, efficiency, and other indicators require specialized testing equipment and techniques.

[0005] Therefore, in order to optimize the water vapor compressor products and improve the manufacturing process, a new test platform technology is urgently needed to realize the measurement of compressor parameters such as suction flow, exhaust flow, power, water injection volume, volumetric efficiency, and adiabatic coefficient. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, the present application provides a multifunctional water vapor compressor testing system. During the compression process of the water vapor compressor, the pressure and temperature in the compression chamber cause fluctuations in the exhaust flow of the compressor. Therefore, general gas flow meters cannot accurately measure the flow of steam. For evaluating the adiabatic efficiency of the water vapor compressor, the accuracy of the flow data is crucial. The multifunctional water vapor compressor testing system provided by the present application can simply and accurately measure the mass flow and adiabatic efficiency of the water vapor compressor, making up for the problem of inaccurate flow meter measurement caused by fluctuations in flow and temperature during the water vapor compression process, facilitating the accurate measurement of the comprehensive performance of the water vapor compressor, and thus promoting the technological development of the water vapor compressor.

[0007] To achieve the above-mentioned purpose, the utility model provides a multifunctional water vapor compressor testing system.

[0008] The system includes a heat pump subsystem, a water vapor circulation subsystem, a water passage subsystem and a water circulation subsystem.

[0009] The heat pump subsystem comprises a heat pump compressor, a condenser, a throttling valve and an evaporator connected in sequence and forming a circulation loop, the heat pump compressor is connected with the inlet of the condenser heat absorption pipe, and the throttling valve is connected with the outlet of the condenser heat absorption pipe.

[0010] The water vapor circulation subsystem comprises a flash tank, a water vapor compressor, a buffer tank, a tube-shell heat exchanger, a first air cooler and a first metering water tank connected in sequence, the inlet of the tube-shell heat exchanger heat release pipe is connected with the buffer tank, and the outlet of the tube-shell heat exchanger heat release pipe is connected with the first air cooler.

[0011] The water circulation subsystem further comprises a buffer tank, a first electric valve, a condenser water tank, a first centrifugal pump, a second air cooler, a second electric valve, a second metering water tank, a third centrifugal pump and a water vapor compressor connected in sequence and forming a water circulation loop, the third centrifugal pump is connected with the compression chamber of the water vapor compressor.

[0012] The water circulation subsystem further comprises a flash tank, a second centrifugal pump, a tube-shell heat exchanger, a condenser and a third air cooler connected in sequence and forming a water circulation loop, the inlet of the tube-shell heat exchanger heat absorption pipe is connected with the second centrifugal pump, the outlet of the tube-shell heat exchanger heat absorption pipe is connected with the inlet of the condenser heat release pipe, and the outlet of the condenser heat release pipe is connected with the third air cooler.

[0013] Preferably, the system comprises two parallelly arranged water vapor compressors, the suction ports of the parallelly arranged water vapor compressors are respectively connected with the flash tank, the outlets of the parallelly arranged water vapor compressors are respectively connected with the buffer tank, and the compression chambers of the parallelly arranged water vapor compressors are respectively connected with the third centrifugal pump.

[0014] Preferably, a stop valve is arranged on the pipeline through which the suction port of each of the parallelly arranged water vapor compressors is connected with the flash tank.

[0015] Preferably, the outlet of the second air cooler is further connected with the condenser water tank through a condenser water tank water return pipeline, and a condenser water return stop valve is arranged on the condenser water tank water return pipeline.

[0016] Preferably, the outlet of the third centrifugal pump is connected with the inlet of the second centrifugal pump, and a third electric valve is arranged on the pipeline through which the outlet of the third centrifugal pump is connected with the inlet of the second centrifugal pump.

[0017] Preferably, a thermometer and / or a pressure gauge are arranged on the pipeline through which the condenser water tank and the first centrifugal pump are connected, the pipeline through which the outlet of the tube-shell heat exchanger heat release pipe and the first air cooler are connected, the pipeline through which the third air cooler and the flash tank are connected, the pipeline through which the flash tank and the water vapor compressor are connected, the pipeline through which the inlet of the tube-shell heat exchanger heat release pipe and the buffer tank are connected, the pipeline through which the third centrifugal pump and the water vapor compressor are connected, and / or the pipeline through which the water vapor compressor and the buffer tank are connected.

[0018] Preferably, a flow meter is provided on the pipeline connecting the flash tank and the second centrifugal pump, on the pipeline connecting the inlet of the heat release pipe of the shell and tube heat exchanger and the buffer tank, on the pipeline connecting the flash tank and the water vapor compressor and / or on the pipeline connecting the third centrifugal pump and the water vapor compressor.

[0019] Preferably, a shut-off valve is provided on the pipe connecting the first metering water tank and the first air cooler, the pipe connecting the condensing water tank and the first air cooler, the pipe connecting the condensing water tank and the first centrifugal pump, the pipe connecting the inlet of the heat release pipe of the shell and tube heat exchanger and the buffer tank, and / or the pipe connecting the third centrifugal pump and the water vapor compressor.

[0020] Preferably, liquid level sensors are provided in the first metering water tank, the second metering water tank, the condensation water tank and / or the flash tank.

[0021] Preferably, the second metering water tank further includes a water supply port, which is connected to the outside through a water supply pipe, and a water supply stop valve is provided on the water supply pipe.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] First, the present invention controls the temperature at the inlet of the flash tank by adopting a condenser and a third air cooler, so the heating and cooling speeds are faster and the control is relatively convenient.

[0024] Secondly, the utility model can check the flow data of the liquid level sensor and the flow meter when measuring the flow, so as to ensure the accuracy of the flow detection.

[0025] Moreover, the utility model can adopt a compressor parallel design, which can not only be used for flow power testing, but also has the functions of overall system temperature control, flow control, tank liquid level control, coupling control of the heat pump end and the water vapor compressor end.

[0026] In summary, the multifunctional water vapor compressor test system does not rely on high-precision instrument detection, but can still achieve high-precision test results and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present application may be better understood by describing the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0028] Figure 1 This is a structural diagram of a multifunctional water vapor compressor testing system of the present application.

[0029] Description of Figure Numbers:

[0030] 100, heat pump compressor; 102, condenser; 104, throttling valve; 106, evaporator; 200, flash tank; 202, first water vapor compressor; 204, second water vapor compressor; 206, buffer tank; 208, tube-in-shell heat exchanger; 210, first air cooler; 212, first metering water tank; 300, first electric valve; 302, condensate tank; 304, first centrifugal pump; 306, second air cooler; 308, second electric valve; 310, second metering water tank; 312, third centrifugal pump; 314, third electric valve; 400, second centrifugal pump; 402, third air cooler; 500, condensate return stop valve; 502, make-up water stop valve; 504, first stop valve; 506, second stop valve; 508, fourth stop valve; 510, sixth stop valve; 512, seventh stop valve; 514, eighth stop valve; 516, ninth stop valve; 600, first thermometer; 602, first pressure gauge; 604, second thermometer; 606, second pressure gauge; 608, third thermometer; 610, third pressure gauge; 612, fourth thermometer; 614, fourth pressure gauge; 616, fifth thermometer; 618, fifth pressure gauge; 620, sixth thermometer; 622, sixth pressure gauge; 624, seventh thermometer; 626, seventh pressure gauge; 700, first flow meter; 702, second flow meter; 704, third flow meter; 706, fourth flow meter. DETAILED DESCRIPTION

[0031] Unless otherwise defined, technical or scientific terms used in the present specification and claims should have the meanings commonly understood by one of ordinary skill in the art to which the present application pertains.

[0032] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, the terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] This embodiment relates to a Figure 1 The multifunctional water vapor compressor test system shown in FIG. The system includes a heat pump subsystem, a water vapor circulation subsystem, a water passage subsystem, and a water circulation subsystem.

[0037] The heat pump subsystem includes a heat pump compressor 100, a condenser 102, a throttle valve 104 and an evaporator 106, which are connected in sequence to form a circulation loop. The heat pump compressor 100 is connected to the inlet of the heat absorption pipe of the condenser 102, and the throttle valve 104 is connected to the outlet of the heat absorption pipe of the condenser 102. In this embodiment, water is used as the circulating medium of the heat pump subsystem. The condenser 102 can be used to provide heat to the circulating water to meet the temperature increase requirement of the circulating water. The evaporator 106 can absorb heat from the air through the refrigerant. In this embodiment, the start and stop of the heat pump subsystem can be determined according to the temperature of the circulating water in the condenser 102. When the temperature of the circulating water is higher than or equal to the set temperature, the heat pump subsystem stops running. When the temperature of the circulating water is lower than the set temperature, the heat pump subsystem starts running.

[0038] In this embodiment, the heat pump subsystem can be used to heat the circulating water in the flash tank 200 to a set temperature when the multifunctional water vapor compressor test system needs to be activated to meet the flash evaporation requirements of the flash tank 200, thereby providing low-pressure steam to the water vapor compressor. Furthermore, the heat pump subsystem can serve as an auxiliary device for the shell-and-tube heat exchanger 208. When the heat exchange efficiency of the shell-and-tube heat exchanger 208 fluctuates and the heat exchange capacity cannot meet the heat demand of the flash tank 200, the heat pump subsystem can serve as a heat supplement device in the system.

[0039] The water vapor circulation subsystem includes a flash tank 200, a water vapor compressor, a buffer tank 206, a shell-and-tube heat exchanger 208, a first air cooler 210, and a first metering water tank 212, which are connected in sequence. The inlet of the heat release pipe of the shell-and-tube heat exchanger 208 is connected to the buffer tank 206, and the outlet of the heat release pipe of the shell-and-tube heat exchanger 208 is connected to the first air cooler 210. In this embodiment, the low-pressure steam at the outlet of the flash tank 200 first enters the water vapor compressor, where it is heated and pressurized before entering the buffer tank 206. The water vapor undergoes gas-liquid separation within the buffer tank 206. The saturated steam at the outlet of the buffer tank 206 enters the shell-and-tube heat exchanger 208, releasing heat to heat the circulating water within the flash tank 200. Subsequently, the saturated steam condenses into water, passes through the first air cooler 210, releases heat, and becomes subcooled water, which then enters the first metering water tank 212.

[0040] The water passage subsystem includes a buffer tank 206, a first electric valve 300, a condensate tank 302, a first centrifugal pump 304, a second air cooler 306, a second electric valve 308, a second metering water tank 310, a third centrifugal pump 312, and a water vapor compressor, all connected in sequence to form a water passage. The third centrifugal pump 312 is connected to the compression chamber of the water vapor compressor. In this embodiment, saturated condensate in the buffer tank 206 passes through the first electric valve 300 and enters the condensate tank 302. The first centrifugal pump 304 then boosts the pressure of the condensate and cools it through the second air cooler 306. A portion of the condensate passes through the second electric valve 308 and enters the second metering water tank 310. The third centrifugal pump 312 then boosts the pressure of the condensate in the second metering water tank 310 and pumps it into the compression chamber of the water vapor compressor. Because the condensate pumped from the buffer tank 206 is high-temperature saturated water, it needs to be dissipated through the second air cooler 306, keeping the water in the condensate tank 302 in a subcooled state. In addition, the second air cooler 306 can also adjust the water temperature entering the compression chamber of the water vapor compressor. In this embodiment, when the liquid level in the second metering water tank 310 is low, the second electric valve 308 can be opened, and the first centrifugal pump 304 can replenish the water in the condensing water tank 302 into the second metering water tank 310.

[0041] In some embodiments, the outlet of the second air cooler 306 is further connected to the condensate tank 302 via a return pipe from the condensate tank 302, which is provided with a condensate return shutoff valve 500. After the first centrifugal pump 304 pressurizes the condensate and cools it through the second air cooler 306, a portion of the condensate flows through the second electric valve 308 into the second metering water tank 310, while the remaining portion is pumped back into the condensate tank 302 through the condensate return shutoff valve 500.

[0042] The water circulation subsystem further comprises a flash tank 200, a second centrifugal pump 400, a tube-shell heat exchanger 208, a condenser 102 and a third air cooler 402 connected in sequence and forming a water circulation loop, the inlet of the heat absorption tube of the tube-shell heat exchanger 208 is connected with the second centrifugal pump 400, the outlet of the heat absorption tube of the tube-shell heat exchanger 208 is connected with the inlet of the heat release tube of the condenser 102, and the outlet of the heat release tube of the condenser 102 is connected with the third air cooler 402. In this embodiment, the water at the bottom of the flash tank 200 is pumped into the tube-shell heat exchanger 208 by the second centrifugal pump 400 after being pressurized. After absorbing heat in the tube-shell heat exchanger 208, it enters the condenser 102, and finally enters the flash tank 200 again through the third air cooler 402. The third air cooler 402 can be used as a water temperature regulating device in the flash tank 200, that is, when the water temperature in the flash tank 200 exceeds the set value, the third air cooler 402 is started to unload heat to the air, and when the water temperature in the flash tank 200 does not exceed the set value, the third air cooler 402 is closed.

[0043] In some embodiments, the system comprises two water vapor compressors arranged in parallel, the suction ports of the water vapor compressors arranged in parallel are respectively connected with the flash tank 200, the outlets of the water vapor compressors arranged in parallel are respectively connected with the buffer tank 206, and the compression cavities of the water vapor compressors arranged in parallel are respectively connected with the third centrifugal pump 312. A stop valve can be arranged on the pipeline connecting the suction port of each water vapor compressor arranged in parallel with the flash tank 200. The stop valve can be used to control the start and stop of the water vapor compressor.

[0044] In some embodiments, the outlet of the third centrifugal pump 312 is connected with the inlet of the second centrifugal pump 400, and a third electric valve 314 is arranged on the pipeline connecting the outlet of the third centrifugal pump 312 with the inlet of the second centrifugal pump 400. In this embodiment, the flash tank 200 not only has the function of flash steam, but also has the function of heat storage. When the liquid level in the flash tank 200 is lower than the set value, the third electric valve 314 can be opened, and the third centrifugal pump 312 pumps the water in the second metering water tank 310 into the circulation pipeline of the flash tank 200.

[0045] In some embodiments, a thermometer and / or a pressure gauge are arranged on the pipeline connecting the condenser water tank 302 with the first centrifugal pump 304, on the pipeline connecting the outlet of the heat release tube of the tube-shell heat exchanger 208 with the first air cooler 210, on the pipeline connecting the third air cooler 402 with the flash tank 200, on the pipeline connecting the flash tank 200 with the water vapor compressor, on the pipeline connecting the inlet of the heat release tube of the tube-shell heat exchanger 208 with the buffer tank 206, on the pipeline connecting the third centrifugal pump 312 with the water vapor compressor, and / or on the pipeline connecting the water vapor compressor with the buffer tank 206.

[0046] In some embodiments, flow meters are provided on the pipe connecting the flash tank 200 and the second centrifugal pump 400, on the pipe connecting the inlet of the heat release pipe of the shell and tube heat exchanger 208 and the buffer tank 206, on the pipe connecting the flash tank 200 and the water vapor compressor, and / or on the pipe connecting the third centrifugal pump 312 and the water vapor compressor.

[0047] In some embodiments, shut-off valves are provided on the pipe connecting the first metering water tank 212 and the first air cooler 210, the pipe connecting the condensing water tank 302 and the first air cooler 210, the pipe connecting the condensing water tank 302 and the first centrifugal pump 304, the pipe connecting the inlet of the heat release pipe of the shell and tube heat exchanger 208 and the buffer tank 206, and / or the pipe connecting the third centrifugal pump 312 and the water vapor compressor.

[0048] In some embodiments, liquid level sensors are provided in the first metering water tank 212 , the second metering water tank 310 , the condensed water tank 302 and / or the flash tank 200 .

[0049] In some embodiments, the second metering water tank 310 further includes a water supply port, which is connected to the outside through a water supply pipe, and a water supply stop valve 502 is provided on the water supply pipe.

[0050] Below, we take the steam compressor design working condition of 3t / hr and exhaust saturation temperature of 160℃ as an example. Figure 1 The operation method of the multifunctional water vapor compressor testing system in the embodiment of the present application is briefly described.

[0051] First, in order to make the operation method of the multifunctional water vapor compressor test system clearer, Figure 1 The embodiments of the present application are further described.

[0052] like Figure 1 The embodiment of the present application shown includes a first water vapor compressor 202 and a second water vapor compressor 204 arranged in parallel.

[0053] This embodiment further includes a first stop valve 504 arranged on the pipeline connecting the first metering water tank 212 and the first air cooler 210, a second stop valve 506 arranged on the pipeline connecting the condensing water tank 302 and the first air cooler 210, a fourth stop valve 508 arranged on the pipeline connecting the condensing water tank 302 and the first centrifugal pump 304, a sixth stop valve 510 arranged on the pipeline connecting the inlet of the heat release pipe of the shell and tube heat exchanger 208 and the buffer tank 206, a seventh stop valve 512 arranged on the pipeline connecting the air intake of the first water vapor compressor 202 and the flash tank 200, an eighth stop valve 514 arranged on the pipeline connecting the air intake of the second water vapor compressor 204 and the flash tank 200, and a ninth stop valve 516 arranged on the pipeline connecting the third centrifugal pump 312 and the water vapor compressor.

[0054] This embodiment further includes a first thermometer 600 and a first pressure gauge 602 arranged on the pipe connecting the condensate tank 302 and the first centrifugal pump 304, a second thermometer 604 and a second pressure gauge 606 arranged on the pipe connecting the outlet of the heat release pipe of the shell and tube heat exchanger 208 and the first air cooler 210, a third thermometer 608 and a third pressure gauge 610 arranged on the pipe connecting the third air cooler 402 and the flash tank 200, a fourth thermometer 612 and a fourth pressure gauge 614 arranged on the pipe connecting the flash tank 200 and the water vapor compressor, a fifth thermometer 616 and a fifth pressure gauge 618 arranged on the pipe connecting the third centrifugal pump 312 and the water vapor compressor, a sixth thermometer 620 and a sixth pressure gauge 622 arranged on the pipe connecting the water vapor compressor and the buffer tank 206, and a seventh thermometer 624 and a seventh pressure gauge 626 arranged on the pipe connecting the inlet of the heat release pipe of the shell and tube heat exchanger 208 and the buffer tank 206.

[0055] This embodiment further includes a first flow meter 700 provided on the pipeline connecting the flash tank 200 and the second centrifugal pump 400, a second flow meter 702 provided on the pipeline connecting the inlet of the heat release pipe of the shell and tube heat exchanger 208 and the buffer tank 206, a third flow meter 704 provided on the pipeline connecting the flash tank 200 and the water vapor compressor, and a fourth flow meter 706 provided on the pipeline connecting the third centrifugal pump 312 and the water vapor compressor.

[0056] In this embodiment, the first and second vapor compressors 202 and 204 can be started according to test requirements such as compressor performance, flow rate, operating conditions, and compressor joint control. Simultaneously, the seventh and eighth stop valves 512 and 514 are opened or closed to coordinate the vapor compressor testing. While the first vapor compressor 202 is being tested, the ninth stop valve 516 can be opened to cool the compression chamber of the first vapor compressor 202.

[0057] Before the first water vapor compressor 202 or the second water vapor compressor 204 is started, the heat pump subsystem needs to first raise the circulating water temperature to 115°C. The refrigerant enters the condenser 102 after being heated and pressurized by the heat pump compressor 100, and transfers heat to the circulating water. The cooled refrigerant passes through the throttle valve 104 to cool and reduce the pressure and enter the evaporator 106. The refrigerant absorbs temperature from the environment and becomes saturated gas and enters the intake port of the heat pump compressor 100, completing the heat pump cycle.

[0058] The heat pump subsystem is activated by a third thermometer 608, which can be set to 115°C. During testing of the first water vapor compressor 202 or the second water vapor compressor 204, the heat pump subsystem is still activated and deactivated according to the logic of the third thermometer 608 set to 115°C. The third thermometer 608 can be adjusted to different temperature values ​​based on the water vapor compressor testing requirements, thereby measuring the operating conditions of the water vapor compressor at different suction temperatures.

[0059] The high-temperature water at the outlet of the third air cooler 402 reaches 115°C and enters the flash tank 200, where it flashes and partially turns into 110°C high-temperature water vapor. It flows out from the top of the flash tank 200, passes through the third flow meter 704, the fourth pressure gauge 614, and the fourth thermometer 612, and then enters the intake port of the first water vapor compressor 202 or the second water vapor compressor 204. The water that has not flashed in the flash tank 200 flows out from the bottom of the flash tank 200, passes through the first flow meter 700, and enters the second centrifugal pump 400. The flow rate of the second centrifugal pump 400 is 320m 3 / hr. After being pressurized, the circulating water enters shell-and-tube heat exchanger 208, which has a heat flux of 2158 kW. Subsequently, the circulating water is heated in condenser 102 and enters third air cooler 402 before returning to flash tank 200, completing the hot water cycle.

[0060] The third flowmeter 704 can test the flash evaporation performance of the flash tank 200, while the first flowmeter 700 can test the performance of the second centrifugal pump 400. The third air cooler 402 can control the temperature of the hot water entering the flash tank 200 through heat exchange with the air. When the hot water temperature at the outlet of the condenser 102 is high, the third air cooler 402 is turned on to precisely control the hot water inlet temperature of the flash tank 200. This hot water circulation can evaluate the performance of the coupled flash tank 200, heat pump subsystem, second centrifugal pump 400, shell-and-tube heat exchanger 208, and third air cooler 402, providing engineering experience and system electrical control experience for practical engineering applications.

[0061] The first water vapor compressor 202 or the second water vapor compressor 204 is warmed and pressurized, enters the buffer tank 206 after passing through the sixth temperature gauge 620 and the sixth pressure gauge 622. In the buffer tank 206, the water vapor is separated into gas and liquid, the saturated steam at the outlet of the buffer tank 206 passes through the fourth temperature gauge 612, the fourth pressure gauge 614, the second flow meter 702 and the sixth stop valve 510, enters the shell-and-tube heat exchanger 208, releases heat, passes through the second temperature gauge 604 and the second pressure gauge 606, enters the second air cooler 306 for secondary cooling, enters the first metering water tank 212 through the first stop valve 504 or enters the condensate tank 302 through the second stop valve 506. If the flow of the water vapor compressor is tested, the first stop valve 504 is opened and the second stop valve 506 is closed, and the flow of the compressor is calculated by measuring the liquid level in the first metering water tank 212. When other performances of the compressor are tested, the first stop valve 504 is closed and the second stop valve 506 is opened, and the condensate water enters the condensate tank 302 for closed circulation. The first air cooler 210 is opened or closed according to the temperature of the second temperature gauge 604, and when the water temperature at the outlet of the tube heat exchanger is high, the first air cooler 210 is opened, and when the water temperature at the outlet of the tube heat exchanger is low, the first air cooler 210 is closed.

[0062] The condensate water in the condensate tank 302 passes through the fourth stop valve 508, the first temperature gauge 600 and the first pressure gauge 602, enters the first centrifugal pump 304 for pressurization, enters the second air cooler 306 for cooling, and part of the condensate water enters the condensate tank 302 and part of the condensate water enters the second metering water tank 310 through the second electric valve 308. The pure water enters the second metering water tank 310 through the water replenishment stop valve 502. The condensate water in the second metering water tank 310 is pressurized by the third centrifugal pump 312, part of the condensate water enters the hot water circulation system through the inlet of the second centrifugal pump 400, and part of the condensate water enters the compression chamber of the first water vapor compressor 202 or the second water vapor compressor 204 through the fourth flow meter 706.

[0063] The opening and closing of the water replenishment stop valve 502 are controlled according to the liquid level of the second metering water tank 310. The opening and closing of the third electric valve 314 are controlled according to the liquid level of the flash tank 200. The opening and closing of the second electric valve 308 are controlled according to the liquid level in the condensate tank 302. Because the water temperature of the condensate water is high during testing, about 150℃, the second air cooler 306 and the first centrifugal pump 304 are always turned on to cool the condensate water, which can effectively reduce the design size of the second air cooler 306 and prevent high-temperature failure of the first centrifugal pump 304.

[0064] The test system adopts a self-heating circulation mode to meet the heat demand of the system, is equipped with a heat pump subsystem and an air cooler to adjust the system heat load balance. The test system has high testing process accuracy and simple measurement mode, and reduces the dependence on high-end flow meters.

[0065] In addition to the above-mentioned tests, the test system can also perform compressor performance tests under special working conditions, such as: 1) immediate start-up test after emergency shutdown; 2) high pressure in the pipeline, compressor start-up test; 3) extreme working condition test of the compressor exhaust side when water replenishment stops; 4) extreme working condition test of the compressor with the exhaust valve closed; 5) test on the effect of exhaust temperature superheat on compressor power; 6) test on the effect of water replenishment hole position on compressor working condition; 7) compressor limit speed test; 8) emergency braking test of the compressor in the event of instrument failure such as exhaust temperature, exhaust pressure, suction temperature, suction pressure, and operating flow.

[0066] This application can meet but is not limited to the above water vapor compressor test content.

[0067] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional water vapor compressor testing system, characterized in that: The system includes a heat pump subsystem, a water vapor circulation subsystem, a water passage subsystem and a water circulation subsystem, wherein: The heat pump subsystem includes a heat pump compressor, a condenser, a throttle valve and an evaporator which are connected in sequence to form a circulation loop, wherein the heat pump compressor is connected to the inlet of the condenser heat absorption pipe, and the throttle valve is connected to the outlet of the condenser heat absorption pipe; The water vapor circulation subsystem includes a flash tank, a water vapor compressor, a buffer tank, a shell and tube heat exchanger, a first air cooler and a first metering water tank connected in sequence, the inlet of the heat release pipe of the shell and tube heat exchanger is connected to the buffer tank, and the outlet of the heat release pipe of the shell and tube heat exchanger is connected to the first air cooler; The water passage subsystem includes a buffer tank, a first electric valve, a condensing water tank, a first centrifugal pump, a second air cooler, a second electric valve, a second metering water tank, a third centrifugal pump and a water vapor compressor, which are sequentially connected to form a water passage. The third centrifugal pump is connected to the compression chamber of the water vapor compressor. The water circulation subsystem further includes a flash tank, a second centrifugal pump, a shell and tube heat exchanger, a condenser and a third air cooler which are connected in sequence to form a water circulation loop, the inlet of the heat absorption pipe of the shell and tube heat exchanger is connected to the second centrifugal pump, the outlet of the heat absorption pipe of the shell and tube heat exchanger is connected to the inlet of the heat release pipe of the condenser, and the outlet of the heat release pipe of the condenser is connected to the third air cooler.

2. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: The system includes two water vapor compressors arranged in parallel, the air intakes of the water vapor compressors arranged in parallel are respectively connected to the flash tanks, the outlets of the water vapor compressors arranged in parallel are respectively connected to the buffer tanks, and the compression chambers of the water vapor compressors arranged in parallel are respectively connected to the third centrifugal pumps.

3. The multifunctional water vapor compressor testing system according to claim 2, characterized in that: A stop valve is respectively provided on the pipeline connecting the air intake of the water vapor compressor arranged in parallel and the flash tank.

4. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: The outlet of the second air cooler is further connected to the condensing water tank through a condensing water tank return pipe, and a condensing water return stop valve is provided on the condensing water tank return pipe.

5. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: The outlet of the third centrifugal pump is connected to the inlet of the second centrifugal pump, and a third electric valve is provided on the pipeline connecting the outlet of the third centrifugal pump and the inlet of the second centrifugal pump.

6. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: A thermometer and / or a pressure gauge are provided on the pipe connecting the condensate tank and the first centrifugal pump, on the pipe connecting the outlet of the heat release pipe of the shell and tube heat exchanger and the first air cooler, on the pipe connecting the third air cooler and the flash tank, on the pipe connecting the flash tank and the water vapor compressor, on the pipe connecting the inlet of the heat release pipe of the shell and tube heat exchanger and the buffer tank, on the pipe connecting the third centrifugal pump and the water vapor compressor, and / or on the pipe connecting the water vapor compressor and the buffer tank.

7. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: Flow meters are provided on the pipeline connecting the flash tank and the second centrifugal pump, on the pipeline connecting the inlet of the heat release pipe of the shell and tube heat exchanger and the buffer tank, on the pipeline connecting the flash tank and the water vapor compressor, and / or on the pipeline connecting the third centrifugal pump and the water vapor compressor.

8. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: A shut-off valve is provided on the pipe connecting the first metering water tank and the first air cooler, the pipe connecting the condensing water tank and the first air cooler, the pipe connecting the condensing water tank and the first centrifugal pump, the pipe connecting the inlet of the heat release pipe of the shell and tube heat exchanger and the buffer tank, and / or the pipe connecting the third centrifugal pump and the water vapor compressor.

9. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: Liquid level sensors are provided in the first metering water tank, the second metering water tank, the condensation water tank and / or the flash tank.

10. The multifunctional water vapor compressor testing system according to claim 1, characterized in that: The second metering water tank further includes a water supply port, which is connected to the outside through a water supply pipe, and a water supply stop valve is provided on the water supply pipe.

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