High-pressure exhaust valve and energy storage device

Abstract

The invention relates to a high-pressure exhaust valve which comprises a valve body, the valve body is provided with a fluid channel, one end of the fluid channel is a fluid inlet, and the other end of the fluid channel is a fluid outlet; the supporting part is arranged in the fluid channel, and the supporting part is connected with the valve body; the valve element assembly is arranged on the fluid channel and reciprocates on the fluid channel; the buffer part is arranged on the valve body, and the buffer part can be used for reducing the impact force of the fluid; the cover body is connected to the end part of the valve body, and a plurality of first through holes are formed in the cover body; and the breathable film is arranged on the cover body and covers the plurality of first through holes. The high-pressure exhaust valve is installed on the liquid cooling pipeline, cooling liquid and bubbles in the cooling liquid enter from the fluid inlet to make contact with and collide with the buffer piece, rapid gas-liquid separation is achieved, gas is exhausted, the pressure of the liquid cooling system is reduced, and the heat dissipation efficiency of the liquid cooling system is guaranteed; and the gas-permeable film ensures that the cooling liquid is not discharged while exhausting gas.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a high-pressure exhaust valve and an energy storage device. Background Art

[0002] With the continuous development of distributed power generation technology and the increase in the scale of new energy power generation, energy storage systems have been more and more widely promoted and applied. The energy storage unit in the energy storage device needs to dissipate heat in time during use. In order to improve the heat dissipation efficiency of the energy storage unit, the existing technology is developing from air cooling to liquid cooling of energy storage units. In a high-pressure circulating liquid cooling system, gas may be generated and bubbles may be formed due to changes in the flow direction of the liquid or the cross-sectional area of ​​the pipeline. It may also be because the coolant in the delivery pipe is not full of gas. The gas in the circulating cooling pipeline will cause the coolant to flow unsmoothly, affecting the cooling performance. In addition, when the gas reaches a certain amount, it may cause the coolant pipeline to burst and completely destroy the liquid cooling system. However, the exhaust valve in the prior art is difficult to automatically discharge excess gas from the delivery pipe under a continuous high-pressure state without discharging the coolant out of the delivery pipe. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a high-pressure exhaust valve which can automatically discharge excess gas from the delivery pipe under high pressure without discharging coolant from the delivery pipe. In addition, the present invention also provides an energy storage device.

[0004] The present invention is implemented by the following scheme: a high-pressure exhaust valve, comprising: a valve body, the valve body extends along the axial direction, the valve body is provided with a fluid channel, the fluid channel extends along the axial direction of the valve body and penetrates the valve body, one end of the fluid channel is a fluid inlet, and the other end of the fluid channel is a fluid outlet; a support portion, the support portion is arranged in the fluid channel, and the support portion is connected to the valve body; a valve core assembly, the valve core assembly is arranged in the fluid channel, and reciprocates on the fluid channel; a buffer, the buffer is arranged on the valve body, and the buffer can be used to reduce the impact force of the fluid; a cover body, the cover body is connected to the end of the valve body, and a plurality of first through holes are arranged on the cover body; a breathable membrane, the breathable membrane is arranged on the cover body, and covers a plurality of the first through holes.

[0005] Furthermore, the buffer is made of a multi-void material.

[0006] Furthermore, a metal block is arranged on a side of the buffer away from the support portion, and a plurality of second through holes are formed in the metal block in an axial direction, and the plurality of second through holes are arranged at intervals.

[0007] Furthermore, a first groove body communicating with the fluid channel is provided at the fluid inlet end of the valve body, and the buffer component and the metal block are both arranged in the first groove body.

[0008] Furthermore, the valve core assembly includes a piston rod passing through the support portion, a floating member arranged at one end of the piston rod, a sealing member arranged at the other end of the piston rod, and an elastic member arranged between the floating member and the support portion.

[0009] Furthermore, a plurality of ventilation grooves are arranged along the radial direction of the sealing member, the plurality of ventilation grooves are arranged at one end of the sealing member facing the breathable membrane, and a connecting hole penetrating the sealing member is arranged at the intersection of the plurality of ventilation grooves.

[0010] Furthermore, a receiving groove is provided at the bottom of the cover body, the breathable membrane is provided in the receiving groove, a pressure ring is provided on the receiving groove, the outer circumferential wall of the pressure ring is sealed with the inner circumferential wall of the receiving groove, and the axial end face of the pressure ring is sealed with the breathable membrane.

[0011] Furthermore, the cover body is provided with two air outlet passages penetrating in the radial direction, the two air outlet passages are intersectingly arranged, and the air outlet passages are communicated with the first through hole.

[0012] The present invention also includes an energy storage device using the high-pressure exhaust valve as described in any one of claims 1-9.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The high-pressure exhaust valve of the present invention is installed on the liquid cooling pipeline. When there is gas in the liquid cooling pipeline, the coolant and the bubbles in the coolant enter from the fluid inlet and contact and collide with the buffer, so that the flow rate of the coolant is reduced, and the large bubbles are split into several small bubbles, so that the gas and liquid are quickly separated, and the gas is discharged from the pipeline, thereby reducing the pressure of the liquid cooling system to ensure its heat dissipation efficiency; in order to avoid the coolant being discharged from the pipeline at the same time as exhausting, resulting in insufficient coolant and affecting the heat dissipation effect, the present invention installs a breathable membrane at the bottom of the cover body cavity, and the tiny pores of the breathable membrane allow gas to pass through, but coolant cannot pass through. That is, the high-pressure exhaust valve of the present invention can provide automatic exhaust for the liquid cooling pipeline and ensure that the coolant does not leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The explosion vision of the high pressure exhaust valve provided by the present invention Figure 1 .

[0015] Figure 2 The explosion vision of the high pressure exhaust valve provided by the present invention Figure 2 .

[0016] Figure 3 for Figure 2 Enlarged view of point A.

[0017] Figure 4 This is a schematic structural diagram of the high-pressure exhaust valve provided by the present invention.

[0018] Figure 5 A cross-sectional view of the high-pressure exhaust valve provided by the present invention.

[0019] Figure 6 This is a schematic diagram of the valve body structure of the high-pressure exhaust valve provided by the present invention.

[0020] The figure includes: a valve body 100, a fluid channel 110, a support part 120, a center hole 121, a third through hole 122, a first groove body 130, a piston rod 210, a floating part 220, a sealing part 230, a ventilation groove 231, a connecting hole 232, an elastic part 240, a support block 250, a buffer part 300, a cover body 400, a receiving groove 410, a pressure ring 420, an air outlet channel 430, a first through hole 440, a breathable membrane 500, a metal block 600, and a second through hole 610. Implementation

[0021] To facilitate those skilled in the art to understand the present invention, the present invention will be further described in detail below in conjunction with specific embodiments and drawings.

[0022] The high-pressure exhaust valve is used to be installed on the liquid cooling pipe of the energy storage device and other equipment that needs exhaust. When the coolant enters the liquid cooling pipe, flows in the liquid cooling pipe, and flows out of the liquid cooling pipe, gas may be generated. The generated gas can penetrate into the coolant to produce bubbles, which will cause the coolant to flow unsmoothly and affect the heat dissipation effect. The high-pressure exhaust valve is usually installed at the turning point of the liquid cooling pipe or near the turning point, because the coolant is prone to generate gas due to the change in the flow direction of the coolant when it flows through the turning point. Installing the exhaust valve at the turning point of the liquid cooling pipe or near the turning point can reduce the residence time of the gas in the coolant. This can reduce the impact of the gas on the liquid cooling device, thereby ensuring the heat dissipation effect of the liquid cooling device. Through the high-pressure exhaust valve, when gas is generated inside the liquid cooling pipe, the gas can be circulated to the external environment, and the coolant will not be discharged during the exhaust process. Example

[0023] Reference Figures 1 to 6The present invention provides a high-pressure exhaust valve, including a valve body 100, which is installed on a liquid cooling pipe when in use. Specifically, the valve body 100 extends in the axial direction and has a first axial end and a second axial end. An external threaded mounting portion is provided at the second axial end of the valve body 100, and the valve body 100 is threadedly assembled on the liquid cooling pipe through the external threaded mounting portion. In order to ensure the sealing performance of the assembly between the valve body 100 and the liquid cooling pipe, a sealing ring mounting groove is provided on the second axial end face of the valve body 100 and is arranged around the outer periphery of the external thread. A sealing ring is installed in the sealing ring mounting groove, and the sealing assembly of the valve body 100 and the liquid cooling pipe is ensured by the elastic deformation of the sealing ring. The first axial end of the valve body 100 is detachably connected to a cover body 400, and the first axial end is also provided with an external threaded mounting portion, and the inner side wall of the cavity of the cover body 400 is provided with an internal thread adapted to the external thread. The cover body 400 is provided with a plurality of first through holes 440 for discharging gas in the liquid cooling pipe. A breathable membrane 500 is provided at the bottom of the inner cavity of the cover body 400, and covers a plurality of first through holes 440. The breathable membrane 500 is a waterproof breathable membrane that allows gas to pass through and prevents liquid from passing through. A fluid channel 101 is provided on the valve body 100, and the fluid channel 110 extends along the axial direction of the valve body 100 and passes through the upper surface of the first axial end and the lower surface of the second axial end. The fluid channel 110 forms a fluid outlet on the upper surface of the first axial end, and a fluid inlet on the lower surface of the second axial end. A support portion 120 is provided in the fluid channel 110, and the support portion 120 is connected to the valve body 100. The valve core assembly is movably provided in the fluid channel 110, and the valve core assembly can reciprocate on the fluid channel 110. A buffer member 300 is provided at the second axial end to reduce the flow rate of the coolant in the high-pressure liquid cooling pipeline. Because in the circulating liquid cooling system, the coolant in the liquid cooling pipe usually flows at a pressure of 300kPa to 400kPa, when the flow direction of the coolant changes or the cross-sectional area of ​​the pipe changes, it is easy to cause gas to be generated and form bubbles, or because the coolant in the liquid cooling pipe is not full, gas may also penetrate. When the coolant and the bubbles in the coolant flow to the exhaust valve and flow into the fluid channel 110, they may collide with the buffer 300, reduce the coolant flow rate and separate the gas and liquid at the same time, thereby increasing the discharge amount of the gas in the coolant.

[0024] In this embodiment, the second axial end external threaded mounting portion of the exhaust valve body 100 is connected to the liquid cooling pipe, and the threaded disassembly and assembly are quick and convenient, reducing the use of tools. When the exhaust valve is working, the coolant and the bubbles in the coolant enter from the fluid inlet and contact and collide with the buffer 300, so that the flow rate of the coolant is reduced, and the large bubbles are split into several small bubbles, thereby realizing rapid separation of gas and liquid. The gas and liquid entering the fluid channel can push the valve core assembly to move upward, and the fluid outlet opens to discharge the gas, while the breathable membrane 500 can prevent the coolant from overflowing. When the pressure in the liquid cooling pipe returns to the preset value, the coolant returns to the liquid cooling pipe, and the valve core assembly is reset. The cycle repeats, and the exhaust valve can provide automatic exhaust for the liquid cooling pipe and ensure that the coolant does not leak.

[0025] In this embodiment, the valve body 100 includes a body, an upper head and a lower head connected to two ends of the body, wherein the body is roughly hexagonal, and the upper head and the lower head are roughly cylindrical. The radial cross-sectional area of ​​the upper head and the lower head is smaller than the radial cross-sectional area of ​​the body. In order to further ensure the sealed connection between the cover body and the valve body, a sealing ring is provided between the end face of the upper head and the cover body to ensure that the liquid does not leak. Specifically, the support part 120 and the valve body 100 are an integrally formed structure. The support part 120 divides the fluid channel 110 into an upper channel and a lower channel. The axis of the support part 120 is provided with a central hole 121 that penetrates the support part longitudinally, and a plurality of third through holes 122 are provided on the support part 120 around the central hole 121, which can allow gas and liquid to pass through.

[0026] The valve core assembly includes a piston rod 210 having a central hole 121, a floating member 220 is installed at the lower end of the piston rod 210, and the floating member 220 and the piston rod 210 are interference fit. The upper end of the piston rod 210 is provided with a sealing member 230 capable of preventing leakage of coolant, and an elastic member 240 arranged between the floating member 220 and the support portion 120. In this embodiment, the floating member 220 is a floating ball, and the radial dimension of the floating ball is smaller than the width of the fluid channel 110, that is, there is a fluid gap between the outer side of the floating ball and the fluid channel, ensuring that the gas can be discharged to the external environment normally. The elastic member 240 is a spring, and the spring is initially in a pre-compressed state, that is, one end of the spring abuts against the lower surface of the support portion 120, and the other end abuts against the upper surface of the floating member 220. At the same time, the elastic member material of the present invention can be metal or non-metal, and the specific material is not limited, so that the elastic member 240 can be used for the transportation of different types of media, thereby improving the versatility of the exhaust valve. During specific operation, gas and coolant with bubbles enter the lower channel from the fluid inlet, and there are several working conditions as follows. When the liquid is lower than the position of the floating member 220, the gas passes through the fluid gap of the lower channel to the outside of the valve body 100, which has an exhaust effect; when the liquid reaches the position of the floating member 220, the floating member 220 is compressed by the buoyancy and the pressure in the hydraulic pipeline, so that the elastic member 240 is compressed, and then the piston rod 210 moves upward, driving the seal 230 to cover the first through hole 440, which plays a sealing role and prevents the coolant from flowing out. When the seal 230 covers the first through hole 440, normal exhaust can be guaranteed. A plurality of ventilation grooves 231 are arranged along the radial direction of the seal 230, and the plurality of ventilation grooves 231 are arranged at one end of the seal 230 facing the breathable membrane 500, and a connecting hole penetrating the seal 230 is arranged at the intersection of the plurality of ventilation grooves 231. In this embodiment, the seal 230 is made of rubber, but is not limited to this material. Because the seal is made of rubber, it will deform when stressed, and a support block 250 is provided below the seal 230. Specifically, the support block 250 is provided with a first mounting portion and a second mounting portion along the axial direction, the first mounting portion is connected to the piston rod 210, and the second mounting portion is interference connected to the connecting hole.

[0027] In the present embodiment, the buffer 300 may be made of a multi-porous material, and the buffer 300 allows the coolant and the gas in the coolant to pass through. The buffer 300 may be a multi-porous metal, a polymer material, a ceramic material, etc. In the present embodiment, the buffer is a multi-porous metal (sintered block) made of metal sintering. Multi-porous metal has good heat exchange properties and heat resistance, and can prevent the multi-porous metal from deforming due to high temperature. In addition, the coolant in the liquid cooling tube is circulated under high pressure, and the coolant hits the buffer so that the flow rate of the coolant is reduced, and the large bubbles are hit into multiple small bubbles for gas-liquid separation, which increases the discharge amount of gas in the coolant and improves the gas discharge efficiency.

[0028] The second axial end of the valve body 100 is provided with a first groove body 130 for accommodating the buffer 300 and the metal block 600. The first groove body 130 is coaxial with the fluid channel 110, and the first groove body 130 is connected with the fluid channel 110. During the installation process, since the buffer 300 is a multi-void metal (sintered block), its outer peripheral side has an interference fit with the valve body and there is an uneven installation. In order to avoid this situation affecting the performance of the exhaust valve, a metal block 600 is provided on the side of the buffer 300 away from the support portion. The metal block 600 is provided with a plurality of second through holes 610 extending through the axial direction, through which gas and liquid can pass, and the plurality of second through holes 610 are arranged at intervals. Specifically, the metal block 600 is a steel sheet, which is inexpensive, corrosion-resistant, safe and reliable, and has a long service life.

[0029] In this embodiment, the cover body 400 includes a main body and an annular wall surrounding the main body and extending from the edge of the main body toward the valve body 100. A receiving groove 410 is provided on the side of the main body facing the valve body 100, and the receiving groove 410 is coaxial with the main body. The breathable membrane 500 is installed in the receiving groove 410, and a pressure ring 420 is provided on one side of the breathable membrane 500. The outer peripheral wall of the pressure ring 420 is sealed with the inner peripheral wall of the receiving groove 410, and the axial end face of the pressure ring 420 is sealed with the breathable membrane 500, so as to realize the sealing between the cover body 400 and the pressure ring 420, and the sealing between the pressure ring 420 and the breathable membrane 500. It should be noted that the sealing fit between the outer circumferential wall of the pressure ring 420 and the inner circumferential wall of the cover body 400 can be a direct sealing fit or an indirect sealing fit. For example, the outer circumferential wall of the pressure ring 420 and the inner circumferential wall of the cover body 400 are interference fit to achieve a direct sealing fit. It is only necessary to ensure the sealing between the outer circumferential wall of the pressure ring 420 and the inner circumferential wall of the cover body 400.

[0030] In order to prevent the first through hole 440 from being blocked by impurities such as dust particles and affecting exhaust, the cover body 400 is provided with two outlet channels 430 in a radial direction, the two outlet channels 430 are arranged to intersect, and the outlet channels 430 are connected to the first through hole 440. It should be noted that the number of outlet channels 430 is not limited and can be increased or decreased according to actual needs. Example

[0031] This embodiment also provides an energy storage device, which uses a high-pressure exhaust valve as in Embodiment 1 to ensure that its heat dissipation system can operate normally.

[0032] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first", "second", etc. 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Although the present invention is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes according to the above content. Therefore, all such substitutions, improvements and changes are included in the scope of the appended claims.

Claims

1. A high pressure exhaust valve, characterized in that: include: A valve body, the valve body extends in an axial direction, a fluid channel is provided on the valve body, the fluid channel extends in the axial direction of the valve body and penetrates the valve body, one end of the fluid channel is a fluid inlet, and the other end of the fluid channel is a fluid outlet; A support portion, wherein the support portion is disposed in the fluid channel and connected to the valve body; A valve core assembly, the valve core assembly is disposed in the fluid channel and reciprocates on the fluid channel; A buffer, the buffer is arranged on the valve body, and the buffer can be used to reduce the impact force of the fluid; A cover body, the cover body being connected to an end of the valve body and having a plurality of first through holes; A breathable membrane is disposed on the cover body and covers a plurality of the first through holes.

2. The high pressure exhaust valve according to claim 1, characterized in that: The buffer is made of a multi-void material.

3. The high pressure exhaust valve according to claim 2, characterized in that: A metal block is arranged on one side of the buffer away from the supporting portion. The metal block is provided with a plurality of second through holes penetrating along the axial direction, and the plurality of second through holes are arranged at intervals.

4. The high pressure exhaust valve according to claim 3, characterized in that: The fluid inlet end of the valve body is provided with a first groove body communicated with the fluid channel, and the buffer component and the metal block are both arranged in the first groove body.

5. The high pressure exhaust valve according to claim 1, characterized in that: The valve core assembly includes a piston rod passing through the support portion, a floating member arranged at one end of the piston rod, a sealing member arranged at the other end of the piston rod, and an elastic member arranged between the floating member and the support portion.

6. The high pressure exhaust valve according to claim 5, characterized in that: A plurality of ventilation grooves are arranged along the radial direction of the sealing member, the plurality of ventilation grooves are arranged at one end of the sealing member facing the breathable membrane, and a connecting hole penetrating the sealing member is arranged at the intersection of the plurality of ventilation grooves.

7. The high pressure exhaust valve according to claim 6, characterized in that: The valve core assembly further includes a support block, which is provided with a first mounting portion and a second mounting portion along an axial direction, wherein the first mounting portion is connected to the piston rod, and the second mounting portion is connected to the connecting hole.

8. The high pressure exhaust valve according to claim 1, characterized in that: The bottom of the cover body is provided with a receiving groove, the breathable membrane is provided in the receiving groove, a pressure ring is provided on the receiving groove, the outer peripheral wall of the pressure ring is sealed with the inner peripheral wall of the receiving groove, and the axial end face of the pressure ring is sealed with the breathable membrane.

9. The high pressure exhaust valve according to claim 1, characterized in that: The cover body is provided with two air outlet passages penetrating in the radial direction, the two air outlet passages are intersectingly arranged, and the air outlet passages are communicated with the first through hole.

10. An energy storage device, characterized in that: Use the high-pressure exhaust valve as described in any one of claims 1 to 9.

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