Vapor-liquid separation type liquid storage device and self-adaptive temperature control mechanical pump driven two-phase fluid loop system thereof

Abstract

The invention relates to the technical field of spacecraft thermal control, and provides a vapor-liquid separation type liquid storage device and a self-adaptive temperature control mechanical pump driven two-phase fluid loop system thereof.The vapor-liquid separation type liquid storage device comprises a liquid storage device shell, a liquid storage device porous liquid suction core and a liquid storage device liquid collection plate, and the liquid storage device porous liquid suction core and the liquid storage device liquid collection plate are arranged in the liquid storage device shell; the liquid storage device porous liquid absorbing core and the liquid storage device liquid collecting plate are both arranged on the lower portion of the liquid storage device shell, a liquid storage device liquid cavity is formed in the area where the liquid storage device porous liquid absorbing core and the liquid storage device liquid collecting plate are arranged, and a liquid storage device steam cavity is formed in the area above the liquid storage device liquid cavity. According to the liquid storage device, the vapor-liquid separation function is achieved, non-condensable gas and non-condensed vapor working media in a loop can be prevented from entering the mechanical pump, and the service life of the pump is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of spacecraft thermal control, and in particular, to a vapor-liquid separation type liquid storage device and a mechanically pumped two-phase fluid loop system with self-adaptive temperature control. Background Art

[0002] With the construction and development of manned spaceflight, high-power communication satellites, space nuclear power, and space power stations, the power level of spacecraft shows a significant increasing trend. For example, the total power of China's space station reaches nearly 30 kW, and that of communication satellites has exceeded 10 kW, and the heat dissipation is about 10 times that of ordinary satellites. In the future, nuclear-powered spacecraft can reach the MW level, and space power stations will reach the GW level, which is nearly one million times the heat dissipation of existing ordinary satellites. System power is one of the main factors affecting thermal design, and high-power heat collection, transmission, and dissipation technology has become an important development direction in the future.

[0003] With the development of payloads / devices towards micro-miniaturized integration and modularization, high heat flux density is another important trend in the future development of spacecraft. For example, laser diodes, high-power sensing chips, GHz-level LSI / VLSI electronic chips, etc. used in space communication systems have a heat flux density of up to hundreds of W / cm 2 , and the performance and reliability of these devices are directly related to the operating temperature. It not only requires a lower operating temperature but also good temperature uniformity. Traditional spacecraft thermal control technologies are completely inapplicable, and the heat dissipation and thermal management problems of high space heat flux density have become one of the bottlenecks restricting the future development of spacecraft.

[0004] The mechanically pumped two-phase fluid loop technology is one of the important technical routes to solve the concentrated heat dissipation of high-power and high heat flux density heat sources in spacecraft.

[0005] However, the liquid storage device used in traditional mechanically pumped two-phase fluid loops only stores the working medium and controls the working pressure of the loop. This makes it difficult to quickly adjust the working pressure of the loop in the face of short-term thermal shocks from intermittent high-power heat sources inside the spacecraft and complex and changeable external thermal radiation environments of the spacecraft. Furthermore, it cannot both ensure an appropriate evaporation temperature of the cold plate and avoid cavitation of the mechanical pump, restricting its wide application in the heat dissipation scenarios of high-power and high heat flux density in spacecraft. Summary of the Invention

[0006] Aiming at the defects in the prior art, the purpose of the present invention is to provide a vapor-liquid separation type liquid storage device and a mechanically pumped two-phase fluid loop system with self-adaptive temperature control.

[0007] According to the vapor-liquid separation type liquid storage device provided by the present invention, it includes a liquid storage device housing, a liquid storage device porous liquid absorption core, and a liquid storage device liquid collecting plate arranged inside the liquid storage device housing;

[0008] The porous liquid absorption core of the liquid storage container and the liquid collecting plate of the liquid storage container are both arranged at the lower part of the liquid storage container housing. The area where the porous liquid absorption core of the liquid storage container and the liquid collecting plate of the liquid storage container are arranged forms a liquid cavity of the liquid storage container, and the area above the liquid cavity of the liquid storage container is a vapor cavity of the liquid storage container;

[0009] The liquid storage container housing is a closed cavity, and the vapor-liquid separation type liquid storage container is pre-filled with a non-condensable gas that provides a partial pressure after being filled with a heat transfer working medium.

[0010] Preferably, the liquid storage container housing includes a liquid storage container top cover, a vapor collecting cavity wall surface, a liquid collecting cavity wall surface, and a liquid storage container bottom cover that are integrally connected in sequence from top to bottom;

[0011] The liquid storage container top cover and the vapor collecting cavity wall surface of the liquid storage container enclose the vapor cavity of the liquid storage container, and the liquid storage container bottom cover and the liquid collecting cavity wall surface of the liquid storage container enclose the liquid cavity of the liquid storage container. Among them, a liquid storage container inlet is provided at the top of the liquid storage container top cover and the liquid storage container inlet extends above the top of the liquid storage container top cover, and a liquid storage container outlet is provided at the bottom of the liquid storage container bottom cover, and the liquid storage container outlet extends below the bottom of the liquid storage container outlet.

[0012] Preferably, the porous liquid absorption core of the liquid storage container is vertically placed at the center of the liquid cavity of the liquid storage container and is directly above the liquid storage container outlet;

[0013] One side edge of the liquid collecting plate of the liquid storage container is arranged on any generatrix of the porous liquid absorption core of the liquid storage container, and is evenly distributed along the circumferential direction of the porous liquid absorption core of the liquid storage container with the porous liquid absorption core of the liquid storage container as the central axis, and the other side of the liquid collecting plate of the liquid storage container is arranged on the liquid collecting cavity wall surface of the liquid storage container housing.

[0014] Preferably, the porous liquid absorption core of the liquid storage container is cylindrical and the liquid collecting plate of the liquid storage container is rectangular.

[0015] Preferably, along the radially outward direction of the vapor-liquid separation type liquid storage container, the liquid collecting plate of the liquid storage container includes a liquid storage area and a liquid directional transport area. Liquid storage area through holes are provided on the liquid storage area, and first directional transport bionic microgrooves are provided on the liquid directional transport area.

[0016] Preferably, the first directional transport bionic microgroove is a periodic wedge-shaped structure. The wedge-shaped structure includes a narrow end and a wide end integrally connected to the narrow end. The first directional transport bionic microgroove can unidirectionally transport liquid from the narrow end to the wide end;

[0017] The wide end faces the porous liquid absorption core of the liquid storage container and can transport the liquid in the liquid directional transport area to the liquid storage area.

[0018] Preferably, a second bionic microchannel for directional transport is arranged on the inner surface of the liquid collection chamber wall of the liquid reservoir. The second bionic microchannel for directional transport adopts a periodic wedge-shaped structure, and the wedge-shaped structure can self-transport the liquid on the surface of the liquid collection chamber wall of the liquid reservoir to the adjacent liquid directional transport area.

[0019] Preferably, a third bionic microchannel for directional transport is arranged on the surface of the bottom cover of the liquid reservoir. The third bionic microchannel for directional transport adopts a periodic wedge-shaped structure, and the wedge-shaped structure can self-transport the liquid on the surface of the bottom cover of the liquid reservoir to the porous liquid absorption core of the liquid reservoir.

[0020] Preferably, the top cover of the liquid reservoir and the inner surface of the wall of the vapor collection chamber of the liquid reservoir have superhydrophobicity, and the inner surfaces of the wall of the liquid collection chamber of the liquid reservoir, the bottom cover of the liquid reservoir, the porous liquid absorption core of the liquid reservoir, and the liquid collection plate of the liquid reservoir have superhydrophilicity.

[0021] A mechanical pump-driven two-phase fluid loop system with adaptive temperature control provided by the present invention includes the above-mentioned vapor-liquid separation type liquid reservoir, and also includes a temperature control heater, a thermoelectric cooler, a filter, a mechanical pump, a first preheater, a microchannel cold plate, a space radiator, and a second preheater. The working medium coming out from the bottom of the vapor-liquid separation type liquid reservoir sequentially enters the filter, the mechanical pump, the first preheater, the microchannel cold plate, the space radiator, and the second preheater, and the working medium coming out from the second preheater enters the top of the vapor-liquid separation type liquid reservoir;

[0022] Both the temperature control heater and the thermoelectric cooler are arranged on the vapor-liquid separation type liquid reservoir.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. By setting the liquid reservoir to include a liquid reservoir vapor chamber at the top and a liquid reservoir liquid chamber at the bottom, arranging a porous liquid absorption core and a liquid collection plate in the liquid reservoir liquid chamber, and setting bionic microchannels on the inner surface of the liquid reservoir, the present invention realizes the vapor-liquid separation function, can avoid non-condensable gases and uncondensed vaporous working medium in the loop from entering the mechanical pump, and effectively improves the service life of the pump.

[0025] 2. The liquid reservoir provided by the present invention is pre-filled with non-condensable gas with a certain partial pressure, so that the fluid at the pump inlet always maintains a certain degree of subcooling, avoiding the cavitation phenomenon of the mechanical pump and improving the reliability of the pump operation.

[0026] 3. The fluid circuit proposed by the present invention can directly pump the liquid working medium condensed by the radiator into the liquid storage tank after temperature control by the preheater. Moreover, a heater and a thermoelectric cooler are arranged on the top end cover of the vapor chamber of the liquid storage tank, which can realize the rapid regulation of the working pressure of the circuit, ensure the appropriate evaporation temperature of the cold plate, avoid cavitation of the mechanical pump, improve the self - adaptability of the working temperature of the fluid circuit and the response ability of the liquid storage tank, and can be widely applied to the heat dissipation scenarios of high - power and high - heat - flux density in spacecraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects, and advantages of the present invention will become more apparent by reading the following detailed description of non - restrictive embodiments with reference to the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of a mechanical - pump - driven two - phase fluid circuit system with self - adaptive temperature control;

[0029] Figure 2 It is a cross - sectional view of a vapor - liquid separation type liquid storage tank;

[0030] Figure 3 It is a schematic diagram of the cross - section of the liquid chamber of the liquid storage tank;

[0031] Figure 4 It is a schematic diagram of the structure of a biomimetic micro - groove for directional transport.

[0032] The figures show:

[0033] Vapor - liquid separation type liquid storage tank 1

[0034] Temperature - controlled heater 2

[0035] Thermoelectric cooler 3

[0036] Filter 4

[0037] Mechanical pump 5

[0038] First preheater 6

[0039] Micro - channel cold plate 7

[0040] Space radiator 8

[0041] Second preheater 9

[0042] Liquid storage tank inlet 10

[0043] Top cover of the liquid storage tank 11

[0044] Wall surface of the vapor - collecting chamber of the liquid storage tank 12

[0045] Wall surface of the liquid - collecting chamber of the liquid storage tank 13

[0046] Second biomimetic micro - groove for directional transport 131

[0047] Bottom cover 14 of the liquid reservoir

[0048] Third directional transport bionic microgroove 141

[0049] Outlet 15 of the liquid reservoir

[0050] Vapor cavity 16 of the liquid reservoir

[0051] Liquid cavity 17 of the liquid reservoir

[0052] Liquid-absorbing porous core 18 of the liquid reservoir

[0053] Liquid-collecting plate 19 of the liquid reservoir

[0054] Liquid directional transport area 191

[0055] Liquid storage area 192

[0056] First directional transport bionic microgroove 193

[0057] Narrow end 1931

[0058] Wide end 1932

[0059] Liquid storage area through-hole 194 Specific implementation mode

[0060] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0061] The present invention provides a vapor-liquid separation type liquid reservoir, as Figure 2 shown, the vapor-liquid separation type liquid reservoir 1 includes a liquid reservoir housing and a liquid-absorbing porous core 18 and a liquid-collecting plate 19 arranged inside the liquid reservoir housing. The liquid-absorbing porous core 18 and the liquid-collecting plate 19 of the liquid reservoir are both arranged in the lower part of the liquid reservoir housing. The area where the liquid-absorbing porous core 18 and the liquid-collecting plate 19 of the liquid reservoir are arranged forms a liquid cavity 17 of the liquid reservoir, and the upper area of the liquid cavity 17 of the liquid reservoir is a vapor cavity 16 of the liquid reservoir.

[0062] Furthermore, the liquid reservoir housing is a closed cavity, which includes a liquid reservoir top cover 11, a liquid reservoir steam collecting cavity wall surface 12, a liquid reservoir liquid collecting cavity wall surface 13, and a liquid reservoir bottom cover 14 that are integrally connected in sequence from top to bottom. The liquid reservoir top cover 11 and the liquid reservoir steam collecting cavity wall surface 12 enclose a liquid reservoir steam cavity 16, and the liquid reservoir bottom cover 14 and the liquid reservoir liquid collecting cavity wall surface 13 enclose a liquid reservoir liquid cavity 17. Among them, a liquid reservoir inlet 10 is provided at the top of the liquid reservoir top cover 11, and the liquid reservoir inlet 10 extends above the top of the liquid reservoir top cover 11. A liquid reservoir outlet 15 is provided at the bottom of the liquid reservoir bottom cover 14, and the liquid reservoir outlet 15 extends below the bottom of the liquid reservoir outlet 15.

[0063] As Figure 2 shown, the liquid reservoir porous wick 18 is cylindrical, vertically placed at the center of the liquid reservoir liquid cavity 17, and is directly above the liquid reservoir outlet 15.

[0064] As Figure 2 shown, the liquid reservoir liquid collecting plate 19 is rectangular. One side of the liquid reservoir liquid collecting plate 19 is fixed on any generatrix of the liquid reservoir porous wick 18, and is evenly distributed along the axial direction with the liquid reservoir porous wick 18 as the central axis. The other side of the liquid reservoir liquid collecting plate 19 is fixed on the liquid reservoir liquid collecting cavity wall surface 13.

[0065] As Figure 3 shown, in the direction radially outward of the vapor-liquid separation type liquid reservoir 1, the liquid reservoir liquid collecting plate 19 includes a liquid storage area 192 and a liquid directional transport area 191 that are connected in sequence, that is, the liquid directional transport area 191 is located on the side away from the liquid reservoir porous wick 18, and the liquid storage area 192 is located on the side close to the liquid reservoir porous wick 18. Liquid storage area through holes 194 are provided on the liquid storage area 192, and first directional transport bionic microgrooves 193 are provided on the liquid directional transport area 191. As Figure 3 、 Figure 4 shown, the first directional transport bionic microgroove 193 is a periodic wedge-shaped structure. The wedge-shaped structure includes a narrow end 1931 and a wide end 1932. The narrow end 1931 is integrally connected to the wide end 1932, and the structure is a smooth transition from the narrow end 1931 to the wide end 1932. For example, the wedge-shaped structure is a triangular prism structure, and again for example, the wedge-shaped structure is a quadrangular prism structure, etc. The periodic wedge-shaped structure can unidirectionally transport liquid from the narrow end 1931 to the wide end 1932; the wide end 1932 faces the direction of the liquid reservoir porous wick 18, and can transport the liquid in the liquid directional transport area 191 to the liquid storage area 192.

[0066] As Figure 3As shown, on the inner surface of the liquid collection cavity wall 13 of the liquid storage device, there are arranged second bionic microgrooves for directional transport 131. The structure of the second bionic microgrooves for directional transport 131 is the same as that of the first bionic microgrooves for directional transport 193, and can self - transport the liquid on the surface of the liquid collection cavity wall 13 of the liquid storage device to the adjacent liquid directional transport area 191.

[0067] As Figure 3 shown, on the surface of the bottom cover 14 of the liquid storage device, there are arranged third bionic microgrooves for directional transport 141. The structure of the third bionic microgrooves for directional transport 141 is the same as that of the first bionic microgrooves for directional transport 193, and can self - transport the liquid on the surface of the bottom cover 14 of the liquid storage device to the porous liquid absorption core 18 of the liquid storage device.

[0068] Specifically, the top cover 11 of the liquid storage device and the inner surface of the vapor collection cavity wall 12 of the liquid storage device have super - hydrophobicity, and the inner surface of the liquid collection cavity wall 13 of the liquid storage device, the inner surface of the bottom cover 14 of the liquid storage device, the porous liquid absorption core 18 of the liquid storage device and the liquid collection plate 19 of the liquid storage device all have super - hydrophilicity.

[0069] It should be noted that the vapor - liquid separation type liquid storage device 1 is pre - filled with a non - condensable gas providing a partial pressure of P g after being filled with the heat - transfer working medium, so that the fluid at the inlet of the mechanical pump 5 always maintains a certain degree of supercooling, avoiding the occurrence of pump cavitation and improving the reliability of the pump.

[0070] The present invention also provides a mechanical - pump - driven two - phase fluid loop system with adaptive temperature control. As Figure 1 shown, it includes a vapor - liquid separation type liquid storage device 1, a temperature - controlled heater 2, a thermoelectric cooler 3, a filter 4, a mechanical pump 5, a first pre - heater 6, a micro - channel cold plate 7, a space radiator 8 and a second pre - heater 9. The working medium flowing out from the bottom of the vapor - liquid separation type liquid storage device 1 sequentially enters the filter 4, the mechanical pump 5, the first pre - heater 6, the micro - channel cold plate 7, the space radiator 8, the second pre - heater 9, and the working medium flowing out from the second pre - heater 9 enters the top of the vapor - liquid separation type liquid storage device 1. The temperature - controlled heater 2 and the thermoelectric cooler 3 are both arranged on the vapor - liquid separation type liquid storage device 1. Preferably, the temperature - controlled heater 2 and the thermoelectric cooler 3 are respectively placed on both sides of the top of the vapor - liquid separation type liquid storage device 1.

[0071] When the high - power and high - heat - flux density heat source cooled by the micro - channel cold plate 7 does not work for a long time and the external heat flux of the space radiator 8 is at an extremely low level, the temperature of the working medium flowing out from the second pre - heater 9 and flowing into the vapor - liquid separation type liquid storage device 1 and then into the mechanical pump 5 is the lowest temperature T min allowed by the mechanical pump 5, so as to reduce the electric energy consumed by the second pre - heater 9.

[0072] When the high-power and high heat flux density heat source cooled by the microchannel cold plate 7 starts to work, after being preheated by the first preheater 6 and reaching the evaporation temperature of the working fluid in the microchannel cold plate 7, it begins to enter the vapor-liquid two-phase heat transfer state. When the two-phase fluid enters the space radiator 8 with a relatively high external heat flux in space, since the condensation temperature level is relatively low at this time, the fluid flowing out of the space radiator 8 will enter the second preheater 9 and the vapor-liquid separation type liquid storage device 1 in the vapor-liquid two-phase state successively. After the vapor-liquid separation is completed in the vapor-liquid separation type liquid storage device 1, it enters the mechanical pump 5 in the single-phase liquid state. The vapor-liquid separation process in the vapor-liquid separation type liquid storage device 1 increases the temperature level and saturation pressure of the working fluid inside it, and then increases the evaporation temperature of the microchannel cold plate 7 until the high-power and high heat flux density heat source cooled by the microchannel cold plate 7 stops working or reaches thermal equilibrium. At thermal equilibrium, the evaporation temperature of the microchannel cold plate 7 is the highest temperature T allowed by the heat source. max 。

[0073] When the high-power and high heat flux density heat source cooled by the microchannel cold plate 7 stops working again, the fluid flowing out of the vapor-liquid separation type liquid storage device 1 is quickly cooled when passing through the space radiator 8 and re-enters the vapor-liquid separation type liquid storage device 1, thereby reducing the temperature level and saturation pressure of the fluid inside it until reaching thermal equilibrium or dropping to the lower temperature limit T allowed by the mechanical pump 5. min 。

[0074] In the above adaptive temperature control process, the partial pressure P provided by the non-condensable gas inside the vapor-liquid separation type liquid storage device 1 g always keeps the fluid at the inlet of the mechanical pump 5 in a subcooled state, avoiding cavitation of the pump.

[0075] The subcooling degree of the fluid at the inlet of the mechanical pump 5 is the difference between the saturation temperature T r corresponding to the total pressure P inside the vapor-liquid separation type liquid storage device 1 and the temperature T r of the fluid inside the vapor-liquid separation type liquid storage device 1. The total pressure P f inside the vapor-liquid separation type liquid storage device 1 is the sum of the saturation pressure P r corresponding to its internal fluid temperature T f and the partial pressure P f . The partial pressure P g satisfies the ideal gas state equation. g satisfies the ideal gas state equation.

[0076] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0077] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A vapor-liquid separation type liquid storage device, characterized in that: It comprises a liquid reservoir shell, and a liquid reservoir porous liquid wick (18) and a liquid reservoir liquid collecting plate (19) arranged inside the liquid reservoir shell; The liquid reservoir porous absorbent core (18) and the liquid reservoir collecting plate (19) are both arranged at the lower part of the liquid reservoir shell, and the area where the liquid reservoir porous absorbent core (18) and the liquid reservoir collecting plate (19) are arranged forms a liquid reservoir liquid cavity (17), and the area above the liquid reservoir liquid cavity (17) is a liquid reservoir vapor cavity (16); The liquid storage shell is a closed cavity, and the vapor-liquid separation type liquid storage (1) is pre-filled with non-condensable gas providing partial pressure after being filled with heat transfer medium.

2. The vapor-liquid separation type liquid storage device according to claim 1, characterized in that: The liquid reservoir housing comprises a liquid reservoir top cover (11), a liquid reservoir steam collecting chamber wall (12), a liquid reservoir liquid collecting chamber wall (13), and a liquid reservoir bottom cover (14) which are integrally connected in sequence from top to bottom; The reservoir top cover (11) and the reservoir steam collecting chamber wall (12) form the reservoir steam chamber (16), and the reservoir bottom cover (14) and the reservoir liquid collecting chamber wall (13) form the reservoir liquid chamber (17), wherein a reservoir inlet (10) is provided at the top of the reservoir top cover (11) and the reservoir inlet (10) extends to above the top of the reservoir top cover (11), and a reservoir outlet (15) is provided at the bottom of the reservoir bottom cover (14) and the reservoir outlet (15) extends to below the bottom of the reservoir outlet (15).

3. The vapor-liquid separation type liquid storage device according to claim 1 or 2, characterized in that: The porous liquid wick (18) of the liquid reservoir is vertically placed in the center of the liquid chamber (17) of the liquid reservoir and is located directly above the outlet (15) of the liquid reservoir; One side of the liquid collecting plate (19) of the liquid reservoir is arranged on any busbar of the porous liquid absorbent core (18) of the liquid reservoir, and is evenly distributed along the circumference of the porous liquid absorbent core (18) of the liquid reservoir with the porous liquid absorbent core (18) of the liquid reservoir as the central axis, and the other side of the liquid collecting plate (19) of the liquid reservoir is arranged on the wall surface (13) of the liquid collecting cavity of the liquid reservoir shell.

4. The vapor-liquid separation type liquid storage device according to claim 3, characterized in that: The porous liquid absorbing core (18) of the liquid storage device is cylindrical, and the liquid collecting plate (19) of the liquid storage device is rectangular.

5. The vapor-liquid separation type liquid storage device according to claim 3, characterized in that: In the radially outward direction of the vapor-liquid separation type liquid reservoir (1), the liquid reservoir collecting plate (19) comprises a liquid storage area (192) and a liquid directional transport area (191), the liquid storage area (192) is provided with a liquid storage area through hole (194), and the liquid directional transport area (191) is provided with a first directional transport bionic microgroove (193).

6. The vapor-liquid separation type liquid storage device according to claim 5, characterized in that: The first directional transport bionic microgroove (193) is a periodic wedge-shaped structure, comprising a narrow end (1931) and a wide end (1932) integrally connected to the narrow end (1931), and the first directional transport bionic microgroove (193) can transport liquid from the narrow end (1931) to the wide end (1932) in one direction. The wide end (1932) faces the porous liquid-absorbing core (18) of the liquid reservoir, and is capable of transporting the liquid in the liquid directional transport area (191) to the liquid storage area (192).

7. The vapor-liquid separation type liquid storage device according to claim 5, characterized in that: The inner surface of the liquid collecting chamber wall (13) of the liquid reservoir is provided with a second directional transport bionic microgroove (131), and the second directional transport bionic microgroove (131) adopts a periodic wedge-shaped structure, and the wedge-shaped structure can transport the liquid on the surface of the liquid collecting chamber wall (13) of the liquid reservoir to the adjacent liquid directional transport area (191).

8. The vapor-liquid separation type liquid storage device according to claim 5, characterized in that: The surface of the bottom cover (14) of the liquid reservoir is provided with a third directional transport bionic microgroove (141), and the third directional transport bionic microgroove (141) adopts a periodic wedge-shaped structure, and the wedge-shaped structure can transport the liquid on the surface of the bottom cover (14) of the liquid reservoir to the porous liquid wick (18) of the liquid reservoir.

9. The vapor-liquid separation type liquid storage device according to claim 2, characterized in that: The top cover (11) of the liquid reservoir and the inner surface of the wall surface (12) of the liquid reservoir steam collecting chamber are super hydrophobic, and the wall surface (13) of the liquid reservoir collecting chamber and the inner surface of the bottom cover (14) of the liquid reservoir, the porous liquid wick (18) of the liquid reservoir, and the liquid collecting plate (19) of the liquid reservoir are all super hydrophilic.

10. A mechanical pump driven two-phase fluid circuit system capable of adaptive temperature control, characterized in that: A vapor-liquid separation type liquid reservoir (1) comprising any one of claims 1 to 9, further comprising a temperature-controlled heater (2), a thermoelectric cooler (3), a filter (4), a mechanical pump (5), a first preheater (6), a microchannel cold plate (7), a space radiator (8) and a second preheater (9), wherein the working fluid coming out of the bottom of the vapor-liquid separation type liquid reservoir (1) enters the filter (4), the mechanical pump (5), the first preheater (6), the microchannel cold plate (7), the space radiator (8) and the second preheater (9) in sequence, and the working fluid coming out of the second preheater (9) enters the top of the vapor-liquid separation type liquid reservoir (1); The temperature-controlled heater (2) and the thermoelectric cooler (3) are both arranged on the vapor-liquid separation type liquid storage container (1).

Images