Spacecraft two-phase fluid loop pump valve assembly performance test system and method

Abstract

The present application relates to a kind of spacecraft two-phase fluid circuit pump valve assembly performance test system and method, belong to pump valve test technical field.It includes valve group, liquid accumulator, first valve, mechanical pump, second valve, third valve, flow regulating valve, first heat exchanger, sixth valve, fourth valve and fifth valve, the valve group, liquid accumulator, first valve, mechanical pump, second valve, flow regulating valve, first heat exchanger, sixth valve are sequentially connected, sixth valve is connected with mechanical pump, one end of third valve is connected with mechanical pump, the other end of third valve is connected with second valve, the two ends of flow regulating valve are respectively connected with fourth valve, fifth valve, fourth valve, fifth valve are connected with measured piece.The present application structure design is reasonable, and the degree of standardization is high, can be applied to 5~236 ℃ high-low temperature alternating environment performance test, it is convenient to maintain maintenance, can carry out the effective verification of the performance index of multiple measured pieces.

Description

TECHNICAL FIELD

[0001] The application relates to a pump valve assembly performance test system and belongs to the technical field of pump valve testing. BACKGROUND

[0002] Spacecraft thermal control high-temperature fluid circuit pump valve products need to be run-in tested under high-temperature and high-pressure conditions to test the flow resistance and operation stability of the pump valve products under on-orbit operation conditions. For example, high-temperature mechanical pumps, filters, check valves, pressure sensors, liquid filling and draining valves and self-locking valves need to complete performance verification under high temperature before being delivered to the overall system. However, the existing technology is mainly for normal-temperature and low-temperature testing, and cannot meet the demand of high-temperature verification performance indexes of pump valve assemblies and single-machine products.

[0003] Therefore, it is urgent to provide a spacecraft two-phase fluid circuit pump valve assembly performance test system and method to solve the above technical problems. SUMMARY

[0004] To solve the above problems, a spacecraft two-phase fluid circuit pump valve assembly performance test system and method are provided. A brief summary of the application is given below to provide a basic understanding of some aspects of the application. It should be understood that this summary is not an exhaustive summary of the application. It is not intended to determine the key or important parts of the application, nor to limit the scope of the application.

[0005] The technical scheme of the application is as follows:

[0006] A spacecraft two-phase fluid circuit pump valve assembly performance test system, comprising a valve group, a liquid accumulator, a first valve, a mechanical pump, a second valve, a third valve, a flow regulating valve, a first heat exchanger, a sixth valve, a fourth valve and a fifth valve, the valve group, the liquid accumulator, the first valve, the mechanical pump, the second valve, the flow regulating valve, the first heat exchanger, the sixth valve are sequentially connected at one end, the other end of the sixth valve is connected with the mechanical pump, one end of the third valve is connected with the input end of the mechanical pump, that is, the mechanical pump, the second valve and the third valve are connected in series and in parallel, the other end of the third valve is connected with the output end of the second valve, the two ends of the flow regulating valve are respectively connected with one end of the fourth valve and one end of the fifth valve, the other end of the fourth valve and the other end of the fifth valve are connected with the measured object, that is, the fourth valve, the measured object and the fifth valve are connected in series and in parallel with the flow regulating valve.

[0007] Preferably, the system further comprises a second heat exchanger, one end of the second heat exchanger is connected with the output end of the first heat exchanger, the other end of the second heat exchanger is connected with the input end of the mechanical pump, that is, the second heat exchanger is connected in parallel with the sixth valve.

[0008] Preferably, the first heat exchanger is a high-temperature heat exchanger, and the second heat exchanger is a cooling heat exchanger, which are respectively used for heating and cooling.

[0009] Preferably: the valve group includes a valve and a pressure regulating valve, the valve and the pressure regulating valve are connected with the input end of the liquid storage tank, the valve is used as a vacuum valve or a filling valve, when used as a vacuum valve, it is connected with a vacuum pump, when used as a filling valve, it is connected with a water tank, the pressure regulating valve is connected with a high-pressure gas tank, and liquid nitrogen can be filled in the high-pressure gas tank.

[0010] Preferably: further comprising a flowmeter, the flowmeter is a Coriolis flowmeter, and the flowmeter is arranged at the input end of the first heat exchanger; and the pipeline between the high-temperature heat exchanger and the condenser (cooling heat exchanger) is filled with water.

[0011] Preferably: further comprising a safety valve and a first pressure sensor, and the upper end of the liquid storage tank is provided with the safety valve and the first pressure sensor; the liquid storage tank (liquid storage tank) plays a safety protection and pressure regulating role, and when the pressure is higher than 4MPA, the safety valve at the upper end of the liquid storage tank automatically releases pressure.

[0012] Preferably: further comprising a detection valve, one end of the detection valve is connected with the input end of the measured member, and the detection valve is used as a vacuum valve or a filling valve, when used as a vacuum valve, the other end is connected with a vacuum pump, and when used as a filling valve, it is connected with a water tank.

[0013] Preferably: further comprising a filter, one end of the sixth valve, the second heat exchanger and the output end of the first valve is connected with the filter, and the other end of the mechanical pump and the input end of the third valve is connected with the filter.

[0014] Preferably: the input end and the output end of the liquid storage tank are respectively provided with a first temperature sensor and a second temperature sensor, the input end of the filter is provided with a second pressure sensor, a third pressure sensor, a mechanical pump, a second valve, a fourth pressure sensor and a first valve are connected in series, one end of the measured member is provided with a third temperature sensor and a fifth pressure sensor in sequence, the other end of the measured member is provided with a fourth temperature sensor and a sixth pressure sensor in sequence, two ends of the first heat exchanger are respectively provided with a fifth temperature sensor and a sixth temperature sensor, and the sixth valve and the second heat exchanger connected in parallel are respectively provided with a seventh temperature sensor and an eighth temperature sensor, which are used for detecting temperature and pressure; the measured member is connected with the pipeline of a kind of spacecraft two-phase fluid loop pump valve assembly performance test system through an interface, the measured member is connected with the third temperature sensor and the fourth temperature sensor at two ends through an interface, the interface is a 60° ball head sealing joint, a 60° spherical surface type pipeline connecting piece outer sleeve nut and a 60° spherical surface type pipeline connecting piece welded pipe mouth, and the measured member is a spacecraft two-phase fluid loop pump valve assembly, which comprises a filter, a check valve, a pressure sensor or a liquid filling and discharging valve.

[0015] A spacecraft two-phase fluid loop pump valve assembly performance test method, which adopts the spacecraft two-phase fluid loop pump valve assembly performance test system (referred to as system) and comprises the following steps:

[0016] Step one: before filling the system, first vacuumize the system through the valve, then fill the system with water, the water is not completely filled, and the pipeline between the high-temperature heat exchanger and the condenser needs to be filled with water, then close the valve;

[0017] Step two: close the first valve, and adjust the pressure in the liquid accumulator (temperature control liquid accumulator) through the pressure regulating valve;

[0018] Step three: open the first valve, the second valve and the sixth valve, and make the third valve, the fourth valve and the fifth valve in the closed state, use the commercial high-temperature mechanical pump to drive the working medium to flow in the loop, use the first heat exchanger to heat the working medium to the specified temperature, if the temperature exceeds the specified temperature, close the sixth valve, and make the temperature drop to the specified test temperature;

[0019] Step four: make the second valve in the closed state, and make the first valve, the third valve, the fourth valve, the fifth valve and the sixth valve in the open state, use the flow regulating valve to adjust the pipeline flow, and test the performance of the measured component (measured high-temperature pump) at the specified temperature.

[0020] Make the third valve in the closed state, and make the first valve, the second valve, the fourth valve, the fifth valve and the sixth valve in the open state, use the flow regulating valve to adjust the pipeline flow, and test the performance of the measured component at the specified temperature.

[0021] The present application has the following beneficial effects:

[0022] The present application has reasonable structure design, high standardization degree, can be applied to high and low temperature alternating environment performance test of 5-236 DEG C, is convenient to maintain and maintain, and can effectively verify performance indexes of various measured components.

[0023] The liquid accumulator of the present application plays a safety protection and pressure regulating role, and when the pressure is higher than 4MPA, the safety valve of the liquid accumulator automatically releases pressure, ensuring personal and property safety.

[0024] The present application is simple to operate, and only needs simple training to operate, and has high test efficiency. DETAILED DESCRIPTION

[0025] Figure 1 It is a structure schematic view of a spacecraft two-phase fluid loop pump valve assembly performance test system.

[0026] Figure 2 It is a structure view of a 60° spherical surface type pipeline connecting piece spherical joint.

[0027] Figure 3 It is a structure view of a 60° spherical surface type pipeline connecting piece sleeve nut.

[0028] Figure 4It is a structure diagram of the 60° spherical type pipe connection welded nozzle.

[0029] In the figure: 1-valve group, 2-liquid reservoir, 3-first valve, 4-mechanical pump, 5-second valve, 6-third valve, 7-flow regulating valve, 8-first heat exchanger, 9-sixth valve, 10-second heat exchanger, 11-fourth valve, 12-fifth valve, 13-measured member, 14-filter, 15-flow meter, 16-detection valve, 110-valve, 120-pressure regulating valve, 21-safety valve, 22-first pressure sensor, T-temperature sensor, X-pressure sensor. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application will be described below by specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0031] Specific embodiment one: combination Figures 1-4 In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application will be described below by specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application. In this embodiment, a spacecraft two-phase fluid circuit pump valve assembly performance test system of this embodiment includes a valve group 1, a liquid reservoir 2, a first valve 3, a mechanical pump 4, a second valve 5, a third valve 6, a flow regulating valve 7, a first heat exchanger 8, a sixth valve 9, a fourth valve 11 and a fifth valve 12. The valve group 1, the liquid reservoir 2, the first valve 3, the mechanical pump 4, the second valve 5, the flow regulating valve 7, the first heat exchanger 8 and the sixth valve 9 are sequentially connected at one end. The basic parameters of the flow resistance valve (flow regulating valve 7) are as follows: the flow resistance valve shell material is selected from 316 stainless steel, the working temperature is 20℃-250℃, the pressure bearing is greater than 8Mpa, and the leakage rate is not greater than 1X10-7Pa·m3 / s. The other end of the sixth valve 9 is connected with the mechanical pump 4. One end of the third valve 6 is connected with the input end of the mechanical pump 4, i.e. the mechanical pump 4, the second valve 5 and the third valve 6 are connected in series and connected in parallel. The other end of the third valve 6 is connected with the output end of the second valve 5. The two ends of the flow regulating valve 7 are respectively connected with one end of the fourth valve 11 and one end of the fifth valve 12. The other end of the fourth valve 11 and the other end of the fifth valve 12 are connected with the measured member 13, i.e. the fourth valve 11, the measured member 13 and the fifth valve 12 are connected in series and connected in parallel with the flow regulating valve 7. The system uses pipe connection for each element, and the pipe uses stainless steel or titanium alloy with an inner diameter of 12mm and an outer diameter of 14mm.

[0032] The second heat exchanger 10 is connected with the output end of the first heat exchanger 8 at one end and connected with the input end of the mechanical pump 4 at the other end, that is, the second heat exchanger 10 is connected with the sixth valve 9 in parallel; the second heat exchanger 10 is a condenser and a water chiller, the return liquid temperature of the water chiller is greater than or equal to 150 DEG C, and the refrigeration power is greater than or equal to 10 kW;

[0033] The first heat exchanger 8 is a high-temperature heat exchanger (heater), and the second heat exchanger 10 is a cooling heat exchanger, which are respectively used for heating and cooling; the heating power of the first heat exchanger 8 is not less than 6 kW, the material working temperature requirement is 300 DEG C, the outer wall surface pressure requirement of the heat exchanger is 6.5 MPa, and the heating capacity is continuously adjustable; the mechanical pump 4 is used for driving the working medium to flow in the loop, and the basic technical requirements of the high-temperature mechanical pump are as follows: the flow is not less than 200 L / h, the pump head is not less than 40 m, the power consumption is less than or equal to 600 W, the working temperature is 20 DEG C to 280 DEG C, the pressure requirement is 6.5 MPa, and the material in contact with the working medium is 316 stainless steel or titanium alloy;

[0034] The valve group 1 includes a valve 110 and a pressure regulating valve 120, the valve 110 and the pressure regulating valve 120 are connected with the input end of the liquid storage tank 2, the valve 110 is used as a vacuum valve or a filling valve, when used as the vacuum valve, the valve 110 is connected with a vacuum pump, when used as the filling valve, the valve 110 is connected with a water tank, the pressure regulating valve 120 is connected with a high-pressure gas tank, and liquid nitrogen can be filled in the high-pressure gas tank;

[0035] The flowmeter 15 is a Coriolis flowmeter, and the flowmeter 15 is arranged at the input end of the first heat exchanger 8; the pipeline between the high-temperature heat exchanger and the condenser (cooling heat exchanger) is filled with water; the flowmeter 15 can withstand 280 DEG C high temperature, the design pressure is 6.5 MPa, the flow range is 25-250 L / h, the accuracy is 1% full scale, and the diameter is DN15;

[0036] The safety valve 21 and the first pressure sensor 22 are further included, and the upper end of the liquid storage tank 2 is provided with the safety valve 21 and the first pressure sensor 22; the liquid storage tank 2 (liquid storage tank) plays a safety protection and pressure regulating role, when the pressure is higher than 4 MPa, the safety valve on the liquid storage tank automatically releases pressure; the lower outlet of the temperature control liquid storage tank (liquid storage tank 2) is connected with the pipeline of the fluid loop, the upper part of the liquid storage tank is designed to have a filling interface, a vacuum pumping interface and a safety valve interface; the liquid storage tank is made of 316 stainless steel or titanium alloy, the volume of the liquid storage tank is 5 L, the working temperature is 20 DEG C to 250 DEG C, the pressure requirement of the liquid storage tank is 6.5 MPa, the leakage rate of the liquid storage tank is not greater than 1x10-Pa·m' / s, the liquid storage tank has temperature measurement, pressure measurement and heating temperature control measures, and the temperature control power is less than 3.0 kW;

[0037] Also includes a detection valve 16, detection valve 16 one end with the measured piece 13 input end connection, detection valve 16 as a vacuum valve or filling valve is used, as a vacuum valve, the other end with the vacuum pump connection, as a filling valve with the water tank connection;

[0038] Also includes filter 14, the sixth valve 9, the second heat exchanger 10, the first valve 3 output end and filter 14 one end connection, mechanical pump 4, the third valve 6 input end and filter 14 the other end connection; Filter inlet and outlet adopt sleeve or plunger joint and fluid circuit pipeline connection; Filter basic parameters as follows: filter end cover, shell adopt 00Cr17Ni14M02 (316L) or titanium alloy processing welding, filter core assembly adopt 022Cr17Ni12M02 stainless steel wire mesh, filter core filter precision better than 50um; Filter design pressure is 6.5MPa; Filter leakage rate is not more than 1X10 -7 Pa·m 3 / s

[0039] The input end and the output end of the liquid accumulator 2 are respectively provided with a first temperature sensor and a second temperature sensor, the input end of the filter 14 is provided with a second pressure sensor, the third pressure sensor, the mechanical pump 4, the second valve 5, the fourth pressure sensor and the first valve 3 are connected in series and are connected in parallel, one end of the measured piece 13 is provided with a third temperature sensor and a fifth pressure sensor in sequence, the other end of the measured piece 13 is provided with a fourth temperature sensor and a sixth pressure sensor in sequence, the two ends of the first heat exchanger 8 are respectively provided with a fifth temperature sensor and a sixth temperature sensor, the sixth valve 9 and the second heat exchanger 10 connected in parallel are respectively provided with a seventh temperature sensor and an eighth temperature sensor, for detecting temperature and pressure, the system design pressure is 6.5MPa, the heat transfer capacity is >6kW, the working temperature of all pressure sensors is 300℃ at most, the range is 0~7.0MPa, the accuracy is 0.1% full scale, the leakage rate is not more than 1X10 -7 Pa·m 3 / s, the range of all temperature sensors is 0~300℃, the accuracy is better than 0.5℃;

[0040] The connection between the pump valve product and the pump valve product adopts a hose connection, the space can be used to install the pump valve assembly and each single machine product, the interface is a 60° ball head sealing joint, the joint form is as follows, the product end is provided with a ball head (such as Figure 2 and 3 ), the interface of the test equipment end is a ball cone structure (such as Figure 4 ); The 60° ball head sealing joint, the sleeve nut and the welded pipe nozzle type are shown in the following figure, the interface size is DN12, the specific size can be seen in Q / Y 945.10-2018 "60° spherical pipeline connecting piece ball joint", Q / Y

[0041] 945.12-2018 "60° spherical type pipe connecting sleeve nut", Q / Y 945.7-2018 "60° spherical type pipe connecting sleeve welding nozzle", high degree of standardization, the measured piece can be disassembled and replaced, realizing effective high-temperature testing of various measured pieces 13, reasonable structure design, easy operation and control cost, good adaptability.

[0042] Specific implementation method two: combined Figure 1 In order to solve the above problems, the present embodiment provides a spacecraft two-phase fluid circuit pump valve assembly performance test method, which is characterized by: adopting the spacecraft two-phase fluid circuit pump valve assembly performance test system (hereinafter referred to as system), which comprises a valve group 1, a liquid accumulator 2, a first valve 3, a mechanical pump 4, a second valve 5, a third valve 6, a flow regulating valve 7, a first heat exchanger 8, a sixth valve 9, a fourth valve 11 and a fifth valve 12, the valve group 1, the liquid accumulator 2, the first valve 3, the mechanical pump 4, the second valve 5, the flow regulating valve 7, the first heat exchanger 8 and the sixth valve 9 are sequentially connected at one end, the other end of the sixth valve 9 is connected with the mechanical pump 4, one end of the third valve 6 is connected with the input end of the mechanical pump 4, that is, the mechanical pump 4, the second valve 5 and the third valve 6 are connected in parallel, the other end of the third valve 6 is connected with the output end of the second valve 5, the two ends of the flow regulating valve 7 are respectively connected with one end of the fourth valve 11 and the fifth valve 12, and the other end of the fourth valve 11 and the fifth valve 12 is connected with the measured piece 13, that is, the fourth valve 11, the measured piece 13 and the fifth valve 12 are connected in parallel with the flow regulating valve 7;

[0043] Further comprising a second heat exchanger 10, one end of the second heat exchanger 10 is connected with the output end of the first heat exchanger 8, and the other end of the second heat exchanger 10 is connected with the input end of the mechanical pump 4, that is, the second heat exchanger 10 is connected in parallel with the sixth valve 9;

[0044] The first heat exchanger 8 is a high-temperature heat exchanger, and the second heat exchanger 10 is a cooling heat exchanger, which are respectively used for heating and cooling;

[0045] The valve group 1 comprises a valve 110 and a pressure regulating valve 120, and the valve 110 and the pressure regulating valve 120 are connected with the input end of the liquid accumulator 2, the valve 110 is used as a vacuum valve or a filling valve, when used as a vacuum valve, it is connected with a vacuum pump, when used as a filling valve, it is connected with a water tank, the pressure regulating valve 120 is connected with a high-pressure gas tank, and the high-pressure gas tank can be filled with liquid nitrogen;

[0046] Further comprising a flow meter 15, the flow meter 15 is a Coriolis flow meter, and the flow meter 15 is arranged at the input end of the first heat exchanger 8; the pipeline between the high-temperature heat exchanger and the condenser (cooling heat exchanger) is filled with water;

[0047] Also includes safety valve 21 and first pressure sensor 22, the upper end of the liquid reservoir 2 is provided with safety valve 21 and first pressure sensor 22; liquid reservoir 2 (liquid tank) plays a role in safety protection and pressure regulation, when the pressure is higher than 4MPA, the safety valve on the liquid reservoir will automatically release pressure;

[0048] Also includes detection valve 16, one end of detection valve 16 is connected with the input end of measured member 13, detection valve 16 is used as a vacuum valve or a filling valve, when used as a vacuum valve, the other end is connected with a vacuum pump, when used as a filling valve, it is connected with a water tank;

[0049] Also includes filter 14, the output end of sixth valve 9, second heat exchanger 10 and first valve 3 is connected with one end of filter 14, mechanical pump 4 and input end of third valve 6 are connected with the other end of filter 14;

[0050] The input end and output end of liquid reservoir 2 are respectively provided with first temperature sensor and second temperature sensor, the input end of filter 14 is provided with second pressure sensor, third pressure sensor, mechanical pump 4, second valve 5, fourth pressure sensor and first valve 3 are connected in series, one end of measured member 13 is provided with third temperature sensor and fifth pressure sensor in sequence, the other end of measured member 13 is provided with fourth temperature sensor and sixth pressure sensor in sequence, both ends of first heat exchanger 8 are respectively provided with fifth temperature sensor and sixth temperature sensor, sixth valve 9 and second heat exchanger 10 are connected in parallel and are respectively provided with seventh temperature sensor and eighth temperature sensor, which are used for detecting temperature and pressure; measured member 13 is connected with the pipeline of a kind of spacecraft two-phase fluid circuit pump valve assembly performance test system through interface, measured member 13 is connected with third temperature sensor and fourth temperature sensor at both ends through interface, the interface is 60° ball head sealing joint, 60° spherical pipe connection piece outer sleeve nut and 60° spherical pipe connection piece welding pipe mouth, measured member 13 is spacecraft two-phase fluid circuit pump valve assembly, including filter, check valve, pressure sensor or liquid filling and draining valve;

[0051] System control includes:

[0052] 1) power supply control;

[0053] 2) mechanical pump start / stop;

[0054] 3) liquid reservoir temperature control: temperature control power is 3kW, temperature control accuracy is ±1℃;

[0055] 4) pressure signal acquisition: pressure sensor signal acquisition, acquisition time interval is not more than 2s;

[0056] 5) temperature signal acquisition: all temperature values are acquired, acquisition time interval is 2s;

[0057] 6) flow signal acquisition;

[0058] 7) with overpressure, overtemperature protection function;

[0059] 8) with temperature, pressure data collection, display and storage;

[0060] The method comprises the following steps:

[0061] Step one: Before the system is filled, vacuumize the system through valve 110, then fill the system with water, not completely, and make sure the pipeline between the high-temperature heat exchanger and the condenser (cooling heat exchanger) is filled with water, then close valve 110; Before the system is filled, vacuumize the system through valve 110, then fill the system with water, make sure the water is above the heater, and make sure the pipeline between the high-temperature heat exchanger and the condenser (cooling heat exchanger) is filled with water; For safety reasons, the entire test system cannot be completely filled with water, and the position that is not filled with water during the test is saturated steam; The reason is that the density of water at different temperatures is different, and the volume of water at high temperature will expand, so if the system pipeline is filled with water, there is no expansion space in the pipeline, which is prone to safety accidents;

[0062] Step two: Close first valve 3, and adjust the pressure in liquid reservoir 2 (temperature control liquid reservoir) through pressure regulating valve 120;

[0063] Step three: Open first valve 3, second valve 5, and sixth valve 9, and make third valve 6, fourth valve 11, and fifth valve 12 in the closed state, use commercial high-temperature mechanical pump 4 to drive the working medium to flow in the loop, and use first heat exchanger 8 to heat the working medium to the specified temperature, if the temperature exceeds the specified temperature, close sixth valve 9, and make the temperature drop to the specified test temperature; Preventing high temperature from causing the detection accuracy to decrease and the detection to fail, without the need to restart or wait for shutdown; The working medium is deionized water, and the working temperature is 20℃-280℃;

[0064] Step four: Make second valve 5 in the closed state, and make first valve 3, third valve 6, fourth valve 11, fifth valve 12, and sixth valve 9 in the open state, use flow regulating valve 7 to adjust the pipeline flow, and perform performance test on measured component 13 (measured high-temperature pump) at the specified temperature;

[0065] Or make third valve 6 in the closed state, and make first valve 3, second valve 5, fourth valve 11, fifth valve 12, and sixth valve 9 in the open state, use flow regulating valve 7 to adjust the pipeline flow, and perform performance test on the measured component at the specified temperature.

[0066] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, the technical solutions can be arranged and combined, and a person skilled in the art can exhaust all possibilities according to the mathematical knowledge of arrangement and combination, so the technical solutions after arrangement and combination will not be described one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present application.

[0067] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of testing performance of a spacecraft two-phase fluid loop pump valve assembly, the method comprising: The application discloses a performance test system for a spacecraft two-phase fluid loop pump valve assembly, which comprises a valve group (1), a liquid accumulator (2), a first valve (3), a mechanical pump (4), a second valve (5), a third valve (6), a flow regulating valve (7), a first heat exchanger (8), a sixth valve (9), a fourth valve (11) and a fifth valve (12), wherein the valve group (1), the liquid accumulator (2), the first valve (3), the mechanical pump (4), the second valve (5), the flow regulating valve (7), the first heat exchanger (8) and the sixth valve (9) are sequentially connected, the sixth valve (9) is connected with the mechanical pump (4), one end of the third valve (6) is connected with the mechanical pump (4), the other end of the third valve (6) is connected with the second valve (5), two ends of the flow regulating valve (7) are respectively connected with the fourth valve (11) and the fifth valve (12), and the fourth valve (11) and the fifth valve (12) are connected with a tested piece (13). The first heat exchanger (8) is a high-temperature heat exchanger, and the second heat exchanger (10) is a cooling heat exchanger. The valve group (1) comprises a valve (110) and a pressure regulating valve (120), the valve (110) and the pressure regulating valve (120) are connected with an input end of the liquid accumulator (2), and the valve (110) is used as a vacuum valve or a filling valve. The application further discloses a performance test method for the spacecraft two-phase fluid loop pump valve assembly. Step one: vacuumizing before filling, vacuumizing the system through the valve (110), then filling the system with water, not completely, and ensuring that the pipeline between the high-temperature heat exchanger and the cooling heat exchanger is filled with water, and then closing the valve (110); Step two: closing the first valve (3) and adjusting the pressure in the liquid accumulator (2) through the pressure regulating valve (120); Step three: opening the first valve (3), the second valve (5) and the sixth valve (9), keeping the third valve (6), the fourth valve (11) and the fifth valve (12) in a closed state, driving the working medium to flow in the loop by using the mechanical pump (4), heating the working medium to a specified temperature by using the first heat exchanger (8), and closing the sixth valve (9) if the temperature exceeds the specified temperature, so that the temperature drops to the specified test temperature; Step four: keeping the second valve (5) in a closed state, keeping the first valve (3), the third valve (6), the fourth valve (11), the fifth valve (12) and the sixth valve (9) in an open state, adjusting the pipeline flow by using the flow regulating valve (7), and testing the performance of the tested piece (13) at a specified temperature; or keeping the third valve (6) in a closed state, keeping the first valve (3), the second valve (5), the fourth valve (11), the fifth valve (12) and the sixth valve (9) in an open state, adjusting the pipeline flow by using the flow regulating valve (7), and testing the performance of the tested piece (13) at a specified temperature; During the test, the position without water is saturated steam, and the volume of water will expand at high temperature, and there is an expansion amount in the pipeline.

2. The method of claim 1, wherein: The second heat exchanger (10) is connected with the first heat exchanger (8) at one end and connected with the mechanical pump (4) at the other end.

3. A method of testing a performance of a spacecraft two-phase fluid loop pump- valve assembly according to claim 2, characterized in that: The flow meter (15) is arranged at the input end of the first heat exchanger (8).

4. The method of claim 3, wherein: The safety valve (21) and the first pressure sensor (22) are arranged at the upper end of the liquid storage tank (2).

5. A method of testing a performance of a spacecraft two-phase fluid loop pump- valve assembly according to claim 4, characterized in that: The detection valve (16) is connected with the measured object (13) and used as a vacuum valve or a filling valve.

6. A method of testing a performance of a spacecraft two-phase fluid loop pump- valve assembly according to claim 5, characterized in that: The filter (14) is connected with the sixth valve (9), the second heat exchanger (10) and the first valve (3) at one end and connected with the mechanical pump (4) and the third valve (6) at the other end.

7. A method of testing a performance of a spacecraft two-phase fluid loop pump- valve assembly according to claim 6, characterized in that: The first temperature sensor and the second temperature sensor are arranged at the input end and the output end of the liquid storage tank (2) respectively, the second pressure sensor is arranged at the input end of the filter (14), the third pressure sensor, the mechanical pump (4), the second valve (5) and the fourth pressure sensor are connected in series and connected with the first valve (3) in parallel, one end of the measured object (13) is provided with the third temperature sensor and the fifth pressure sensor in sequence, the other end of the measured object (13) is provided with the fourth temperature sensor and the sixth pressure sensor in sequence, the fifth temperature sensor and the sixth temperature sensor are arranged at the two ends of the first heat exchanger (8) respectively, the seventh temperature sensor and the eighth temperature sensor are arranged at the two ends of the sixth valve (9) and the second heat exchanger (10) in parallel, and used for detecting temperature and pressure. The second heat exchanger (10) is connected with the first heat exchanger (8) at one end and connected with the mechanical pump (4) at the other end. The flow meter (15) is arranged at the input end of the first heat exchanger (8). The safety valve (21) and the first pressure sensor (22) are arranged at the upper end of the liquid storage tank (2). The detection valve (16) is connected with the measured object (13) and used as a vacuum valve or a filling valve. The filter (14) is connected with the sixth valve (9), the second heat exchanger (10) and the first valve (3) at one end and connected with the mechanical pump (4) and the third valve (6) at the other end. The first temperature sensor and the second temperature sensor are arranged at the input end and the output end of the liquid storage tank (2) respectively, the second pressure sensor is arranged at the input end of the filter (14), the third pressure sensor, the mechanical pump (4), the second valve (5) and the fourth pressure sensor are connected in series and connected with the first valve (3) in parallel, one end of the measured object (13) is provided with the third temperature sensor and the fifth pressure sensor in sequence, the other end of the measured object (13) is provided with the fourth temperature sensor and the sixth pressure sensor in sequence, the fifth temperature sensor and the sixth temperature sensor are arranged at the two ends of the first heat exchanger (8) respectively, the seventh temperature sensor and the eighth temperature sensor are arranged at the two ends of the sixth valve (9) and the second heat exchanger (10) in parallel, and used for detecting temperature and pressure.

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