One-way valve and coupling type one-way valve for space station single-phase fluid loop

Abstract

The one-way valve for the space station single-phase fluid loop comprises a valve element and a valve body, the valve element is slidably arranged in the valve body in a sleeved mode through a spring, a streaming hole is formed in the side wall of the valve element, a first annular limiting step is formed on the inner side wall of the valve body, and a second annular limiting step is formed in the inner side wall of the valve body. A second annular limiting step is arranged on the outer side wall of the valve element. When the valve element is in a completely-opened state, the second annular limiting step abuts against the first annular limiting step, the abutting acting force is F0, and F0 is larger than 0; the pushing force of fluid acting on the end face of one end of the valve element is F1; the driving force of the fluid acting on the streaming hole of the valve core is F2; the spring acting force borne by the other end of the valve element is Fs, and F1 + F2 = Fs + F0. According to the one-way valve, it is ensured that the valve element can be kept in a completely-opened state, in addition, too large flowing resistance in a system is avoided, and the service life of the one-way valve is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field related to space science payloads, and in particular to a one-way valve and a coupled one-way valve for a single-phase fluid circuit of a space station. Background Art

[0002] With the development of technology in the fields of aerospace, shipbuilding, weapons and equipment, and electronic equipment, the power consumption and heat flux density of equipment are increasing. Traditional heat conduction, forced air convection and other methods can no longer meet the heat dissipation needs of equipment and electronic components. Single-phase fluid circuit liquid cooling has become the main heat dissipation method due to its high heat dissipation efficiency, long transmission distance, high temperature control accuracy, and strong adaptability. The existing single-phase fluid circuit liquid cooling of space stations generally uses a micro-circulation pump group for fluid drive, and provides a long-life fluid drive component that can be quickly disassembled (patent number ZL202311008603.1) to ensure that the single-phase fluid circuit of the space station can work reliably for a long time in the space station.

[0003] The one-way valve is an important component of a long-life fluid drive assembly that can be quickly disassembled. It can prevent the reverse flow of liquid and ensure the safety of the circulation pump when the system pressure suddenly increases. Existing one-way valves generally consider design parameters such as opening pressure and flow resistance, but do not pay attention to the relevant design parameters of its fully open state. When in use, since the valve core is not fully opened, it is easy to vibrate under the action of the fluid, and there is a problem of serious wear and tear on the valve body, which shortens the life of the one-way valve. Summary of the invention

[0004] In order to solve one or more of the technical problems existing in the prior art, the present invention provides a one-way valve and a coupled one-way valve for a single-phase fluid circuit of a space station.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a one-way valve for a single-phase fluid circuit of a space station, comprising a valve core and a valve body, wherein the valve core is slidably sleeved in the valve body through a spring, a bypass hole is opened on the side wall of the valve core, a first annular limiting step is formed on the inner side wall of the valve body, and a second annular limiting step is provided on the outer side wall of the valve core;

[0006] When the valve core is in a fully open state, the second annular limiting step abuts against the first annular limiting step, and the abutting force is F 0 , F 0 >0;

[0007] The driving force of the fluid on one end of the valve core is F 1 , Where D is the valve core diameter, S is the projected area of ​​the bypass hole in the direction of fluid flow, Q is the flow rate of the fluid circuit where the one-way valve is located, and ρ is the fluid density;

[0008] The driving force of the fluid on the bypass hole of the valve core is F 2 , Where D is the valve core diameter, S is the projected area of ​​the bypass hole in the fluid flow direction, Q is the flow rate of the fluid circuit where the one-way valve is located, H is the valve core length between the second annular limit step and the end face of one end of the valve core, and ρ is the fluid density;

[0009] The spring force on the other end of the valve core is Fs, F 1 +F 2 =F s +F 0 .

[0010] The beneficial effects of the present invention are as follows: the one-way valve of the present invention sets the force of the fluid flowing through the valve body. When designing the one-way valve, various parameters can be reasonably set to ensure that the fluid driving force acting on the valve core matches the spring force under the minimum working flow rate while ensuring the space assembly requirements, that is, the fluid driving force acting on the valve core at the working position is not less than the spring force, so as to ensure that the valve core can maintain a fully open state. In addition, it is also ensured that under the minimum flow rate, the fluid driving force acting on the valve core at the working position should not be too large to avoid causing excessive flow resistance in the system. The service life of the one-way valve is improved.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] Further, the D is 0.01-0.04 m, the ρ is 1-1.2 kg / L, the H is 0.007-0.015 m, and the Q is 0.000108333-0.000222222 m 3 / s, said S is 0.0000416~0.00007712mm 3 / s, the F s It is 1.2~1.8N.

[0013] The beneficial effect of adopting the above further scheme is that by setting the optional range of each parameter, it is possible to ensure that the assembly size of the one-way valve meets the space usage requirements while also ensuring that the valve core is fully and stably opened under the working flow rate.

[0014] Further, when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.2N, the Q is 0.000108333m 3 / s, the S is 0.0000416m 2 .

[0015] Further, when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.8N, the Q is 0.000116667m 3 / s, the S is 0.0000366m 2 .

[0016] Further, when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.5N, the Q is 0.000119444m 3 / s, the S is 0.0000416m 2 .

[0017] Further, when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.2N, the Q is 0.000119444m 3 / s, the S is 0.0000469m 2 .

[0018] Further, when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.8N, the Q is 0.000147222m 3 / s, the S is 0.0000469m 2 .

[0019] Further, when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.5N, the Q is 0.000222222m 3 / s, the S is 0.00007712m 2 .

[0020] Furthermore, the outer wall of the valve core has a sliding connection surface, and the inner wall of the valve body has a sliding matching surface. The sliding connection surface of the valve core is slidably matched with the sliding matching surface of the valve body, and a hardening treatment layer is provided on the sliding connection surface and / or the sliding matching surface.

[0021] A coupled one-way valve comprises at least two of the above-mentioned one-way valves for a single-phase fluid circuit of a space station, and also comprises a T-shaped outlet valve body, wherein the valve body comprises an inlet valve body and an outlet valve body, one end of the inlet valve body is sealingly sleeved with one end of the outlet valve body, the inner side wall of the outlet valve body protrudes from the inner side wall of the inlet valve body and forms a first annular limiting step, the other end of the inlet valve body forms a closing structure, and an end face of the valve core can be sealingly abutted against the closing structure for closure; the two ends of the T-shaped outlet valve body are respectively integrally connected and communicated with the outlet valve bodies of two one-way valves for a single-phase fluid circuit of a space station.

[0022] The beneficial effects of the present invention are: a coupled one-way valve of the present invention couples two independent one-way valves to ensure long-life and reliable operation of the drive component in the fluid circuit; in a limited space, the coupled one-way valve can make the integration of the space fluid drive component higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a one-way valve for a single-phase fluid circuit of a space station according to the present invention;

[0024] Figure 2 The cross-sectional structure of the one-way valve for the single-phase fluid circuit of the space station of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 3 The cross-sectional structure of the one-way valve for the single-phase fluid circuit of the space station of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Valve core; 2. Inlet valve body; 3. Outlet valve body; 4. T-type outlet valve body; 5. First annular limit step; 6. Second annular limit step; 7. Bypass hole; 8. Spring. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] like Figure 1 to Figure 4 As shown, a one-way valve for a single-phase fluid circuit of a space station in this embodiment comprises a valve core 1 and a valve body, wherein the valve core 1 is slidably sleeved in the valve body via a spring 8, a bypass hole 7 is provided on the side wall of the valve core 1, a first annular limiting step 5 is formed on the inner side wall of the valve body, and a second annular limiting step 6 is provided on the outer side wall of the valve core 1;

[0031] When the valve core 1 is in a fully open state, the second annular limiting step 6 abuts against the first annular limiting step 5, and the abutting force is F 0 , F 0 >0; the abutment force is equivalent to leaving a certain safety margin for the full opening of the valve core, ensuring that the valve core is fully and stably opened.

[0032] The driving force of the fluid on one end of the valve core 1 is F 1 , Where D is the valve core diameter, S is the projected area of ​​the bypass hole 7 in the fluid flow direction, Q is the flow rate of the fluid circuit where the one-way valve is located, and ρ is the fluid density;

[0033] The driving force of the fluid on the bypass hole 7 of the valve core 1 is F 2 , Where D is the diameter of the valve core 1, S is the projected area of ​​the bypass hole 7 in the fluid flow direction, Q is the flow rate of the fluid circuit where the one-way valve is located, H is the length of the valve core 1 between the second annular limit step 6 and the end face of one end of the valve core 1, and ρ is the fluid density;

[0034] The force of spring 8 on the other end of valve core 1 is Fs, F 1 +F 2 =F s +F 0 .

[0035] Optionally, in this embodiment, the D is 0.01-0.04 m, the ρ is 1-1.2 kg / L, the H is 0.007-0.015 m, and the Q is 0.000108333-0.000222222 m 3 / s, said S is 0.0000416~0.00007712mm 3 / s, the F s The range of the optional parameters is 1.2 to 1.8 N. By setting the optional range of each parameter, it can ensure that the assembly size of the one-way valve meets the space usage requirements and that the valve core is fully and stably opened under the working flow rate.

[0036] Since the opening pressure, flow resistance, etc. are generally considered when designing a conventional one-way valve, this embodiment mainly considers that the one-way valve should be fully opened at the rated flow rate, and the valve core can be fully and stably opened while ensuring that the size of the one-way valve meets the space assembly requirements.

[0037] A specific solution of this embodiment is that when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.2N, the Q is 0.000108333m3 / s, the S is 0.0000416m 2 .

[0038] A specific solution of this embodiment is that when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.8N, the Q is 0.000116667m 3 / s, the S is 0.0000366m 2 .

[0039] A specific solution of this embodiment is that when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.5N, the Q is 0.000119444m 3 / s, the S is 0.0000416m 2 .

[0040] A specific solution of this embodiment is that when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.2N, the Q is 0.000119444m 3 / s, the S is 0.0000469m 2 .

[0041] A specific solution of this embodiment is that when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.8N, the Q is 0.000147222m 3 / s, the S is 0.0000469m 2 .

[0042] A specific solution of this embodiment is that when D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.5N, the Q is 0.000222222m 3 / s, the S is 0.00007712m 2 .

[0043] A preferred solution of this embodiment is that the outer wall of the valve core 1 has a sliding connection surface, the inner wall of the valve body has a sliding matching surface, the sliding connection surface of the valve core 1 is slidingly matched with the sliding matching surface of the valve body, and the sliding connection surface and / or the sliding matching surface are provided with a hardening treatment layer. The matching surface of the valve core and the valve body is hard anodized (or other hardening treatments) and ground to ensure high hardness and low roughness, so as to ensure reliable movement between the valve core and the matching surface of the valve body during movement, so as to avoid the risk of the one-way valve getting stuck during operation.

[0044] In this embodiment, the fluid driving force of the valve core is decomposed into two parts: one part is the fluid driving force acting on the circular end face (the end face of one end of the valve core), and the other part is the fluid driving force acting on the bypass hole. At the same time, considering that in actual design, when the valve core is in the fully open position, there will be an additional force (assuming a constant value F 0 ) The valve core can be reliably maintained in the fully open position. Optionally, the F 0 The safety margin is 0.1N to 0.8N. By setting a reasonable safety margin, it is ensured that the valve core can completely abut against the valve body after being fully opened, avoiding vibration and wear of the valve body or valve core. In this embodiment, a sealing ring is also provided on one end face of the valve core 1. When the one-way valve is closed, one end face of the valve core can be sealed against the valve body through the sealing ring.

[0045] like Figure 3 As shown in the figure, when the one-way valve is working and the fluid flows through the valve core at the rated flow rate, the valve core is pushed by the fluid and needs to overcome the spring force and ensure the fully open state. At this time, in the fluid circuit, the one-way valve is always in the fully open state, which can reduce the reciprocating motion of the valve core and the valve body mating surface.

[0046] The one-way valve of this embodiment combines the bypass theory and sets the force of the fluid flowing through the valve core. When designing the one-way valve, various parameters can be reasonably set to ensure that the fluid driving force acting on the valve core matches the spring force under the minimum working flow rate while ensuring the space assembly requirements, that is, the fluid driving force acting on the valve core at the working position is not less than the spring force, so as to ensure that the valve core can maintain a fully open state. In addition, it is also ensured that the fluid driving force acting on the valve core at the working position should not be too large under the minimum flow rate to avoid causing excessive flow resistance in the system. The service life of the one-way valve is improved.

[0047] like Figure 1 to Figure 4As shown, the present embodiment further provides a coupled one-way valve, comprising at least two of the above-mentioned one-way valves for the single-phase fluid circuit of the space station, and also comprising a T-type outlet valve body 4, wherein the valve body comprises an inlet valve body 2 and an outlet valve body 3, one end of the inlet valve body 2 is sealingly connected with one end of the outlet valve body 3, the inner side wall of the outlet valve body 3 protrudes from the inner side wall of the inlet valve body 2 and forms a first annular limiting step 5, the other end of the inlet valve body 2 forms a closing structure, and one end face of the valve core 1 can be sealed and abutted against the closing structure for closure; the two ends of the T-type outlet valve body 4 are respectively integrally connected and communicated with the outlet valve bodies of the two one-way valves for the single-phase fluid circuit of the space station.

[0048] In this embodiment, the T-shaped outlet valve body 4 is integrally connected with the outlet valve bodies 3 of the two one-way valves to form a single independent outlet valve, which is equivalent to the two one-way valves sharing one outlet valve to form a coupled one-way valve configuration.

[0049] A coupled one-way valve in this embodiment couples two independent one-way valves to ensure long-life and reliable operation of the drive component in the fluid circuit; in a limited space, the coupled one-way valve can make the spatial fluid drive component more integrated.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A one-way valve for a single-phase fluid circuit in a space station, characterized in that: It comprises a valve core and a valve body, wherein the valve core is slidably sleeved in the valve body through a spring, a bypass hole is opened on the side wall of the valve core, a first annular limiting step is formed on the inner side wall of the valve body, and a second annular limiting step is formed on the outer side wall of the valve core; When the valve core is in a fully open state, the second annular limiting step abuts against the first annular limiting step, and the abutting force is F0, where F0>0; The driving force of the fluid on one end of the valve core is F1. Where D is the valve core diameter, S is the projected area of ​​the bypass hole in the direction of fluid flow, Q is the flow rate of the fluid flowing through the valve core, and ρ is the fluid density; The driving force of the fluid on the bypass hole of the valve core is F2. Where D is the valve core diameter, S is the projected area of ​​the bypass hole in the fluid flow direction, Q is the flow rate of the fluid circuit where the one-way valve is located, H is the valve core length between the second annular limit step and the end face of one end of the valve core, and ρ is the fluid density; The spring force on the other end of the valve core is Fs, F1+F2=F s +F0.

2. A one-way valve for a single-phase fluid circuit in a space station according to claim 1, characterized in that: The D is 0.01 to 0.04 m, the ρ is 1 to 1.2 kg / L, the H is 0.007 to 0.015 m, and the Q is 0.000108333 to 0.000222222 m 3 / s, said S is 0.0000416~0.00007712mm 3 / s, the F s It is 1.2~1.8N.

3. A one-way valve for a single-phase fluid circuit in a space station according to claim 2, characterized in that: When D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.2N, the Q is 0.000108333m 3 / s, the S is 0.0000416m 2 .

4. A one-way valve for a single-phase fluid circuit in a space station according to claim 2, characterized in that: When D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.8N, the Q is 0.000116667m 3 / s, the S is 0.0000366m 2 .

5. A one-way valve for a single-phase fluid circuit in a space station according to claim 2, characterized in that: When D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.5N, the Q is 0.000119444m 3 / s, the S is 0.0000416m 2 .

6. A one-way valve for a single-phase fluid circuit in a space station according to claim 2, characterized in that: When D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.2N, the Q is 0.000119444m 3 / s, the S is 0.0000469m 2 .

7. A one-way valve for a single-phase fluid circuit in a space station according to claim 2, characterized in that: When D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.8N, the Q is 0.000147222m 3 / s, the S is 0.0000469m 2 .

8. A one-way valve for a single-phase fluid circuit in a space station according to claim 2, characterized in that: When D is 0.0214m, ρ is 1.11kg / L, H is 0.0094m, and F s is 1.5N, the Q is 0.000222222m 3 / s, the S is 0.00007712m 2 .

9. A one-way valve for a single-phase fluid circuit in a space station according to any one of claims 1 to 8, characterized in that: The outer wall of the valve core has a sliding connection surface, and the inner wall of the valve body has a sliding matching surface. The sliding connection surface of the valve core is slidably matched with the sliding matching surface of the valve body, and a hardening treatment layer is provided on the sliding connection surface and / or the sliding matching surface.

10. A coupled one-way valve, characterized in that: It comprises at least two one-way valves for single-phase fluid circuits of space stations as described in any one of claims 1 to 9, and also comprises a T-type outlet valve body, the valve body comprising an inlet valve body and an outlet valve body, one end of the inlet valve body is sealingly sleeved with one end of the outlet valve body, the inner side wall of the outlet valve body protrudes from the inner side wall of the inlet valve body and forms a first annular limiting step, the other end of the inlet valve body forms a closing structure, and one end face of the valve core can be sealingly abutted against the closing structure for closure; the two ends of the T-type outlet valve body are respectively integrally connected and communicated with the outlet valve bodies of two one-way valves for single-phase fluid circuits of space stations.

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