Bi-directional automatic shutdown device and liquid cooling system

Abstract

The present application discloses a two-way automatic shut-off device and a liquid cooling system. The two-way automatic shut-off device includes a liquid supply side shut-off component, a liquid return side shut-off component, and a connection component. The liquid return side shut-off component is connected to the liquid supply side shut-off component through the connection component. When the two-way automatic shut-off device is installed in the pipeline and a liquid leakage occurs in the pipeline, the sealing plug module of the liquid return side shut-off component can move towards one end close to the liquid supply side shut-off component under the action of the internal and external pressure difference of the pipeline, so that the liquid return side shut-off component is shut off, and drives the connecting rod in the connection component to move towards one end away from the liquid supply side shut-off component, so that the liquid supply side shut-off component is shut off. The present application is a pure mechanical two-way automatic shut-off device. In scenarios such as equipment installation and regular maintenance, that is, when the equipment is in a state of not being powered on, if a liquid leak occurs, the supply and return liquid pipelines can still be cut off in time, and the reliability is high.

Description

Technical Field

[0001] This application relates to the technical field of liquid cooling heat dissipation, and particularly to a two-way automatic shut-off device for pipeline leakage detection and a liquid cooling system having the two-way automatic shut-off device. Background Art

[0002] The liquid cooling system uses water as the working medium. Once leakage occurs, it will cause short circuits, malfunctions of IT (computer) equipment hardware, and even data loss and service interruption. Therefore, the liquid cooling system is equipped with a leakage detection device. Conventional leakage detection devices usually consist of a leakage detection circuit and a solenoid valve. The leakage detection circuit detects whether there is a leakage in the liquid cooling system. If so, the controller controls the solenoid valve to shut off the liquid cooling system. Even some leakage detection devices only have a leakage detection circuit. By detecting whether there is a leakage in the liquid cooling system through the leakage detection circuit, if so, after an alarm, the liquid cooling system is manually shut off.

[0003] However, the leakage detection circuit or the solenoid valve in the above prior art belongs to an active circuit and requires power supply to work properly. During the installation and regular maintenance of the equipment, the equipment is in a non-powered state, and at this time, if a leakage occurs, it cannot be shut off, resulting in poor reliability. Summary of the Invention

[0004] In order to overcome the problems existing in the above prior art, the main object of this application is to provide a purely mechanical two-way automatic shut-off device with strong reliability.

[0005] To achieve the above object, this application specifically adopts the following technical solutions:

[0006] This application provides a two-way automatic shut-off device for pipeline leakage detection; the two-way automatic shut-off device includes:

[0007] A liquid supply side shut-off component;

[0008] A liquid return side shut-off component;

[0009] A connection component, and the liquid return side shut-off component is connected to the liquid supply side shut-off component through the connection component;

[0010] When the two-way automatic shut-off device is installed in the pipeline and a liquid leakage occurs in the pipeline, the sealing plug module of the liquid return side shut-off assembly is used to move towards one end close to the liquid supply side shut-off assembly under the action of the internal and external pressure difference of the pipeline, so as to shut off the liquid return side shut-off assembly, and drive the connecting rod in the connecting assembly to move towards one end away from the liquid supply side shut-off assembly, so as to shut off the liquid supply side shut-off assembly, thereby preventing short circuits, failures, etc. of the equipment hardware caused by liquid leakage in the pipeline and ensuring the safety of the equipment. In a specific embodiment, when the connecting rod moves towards one end away from the liquid supply side shut-off assembly, it can cause the piston module in the liquid supply side shut-off assembly to move, so as to shut off the liquid supply side shut-off assembly; when the connecting rod moves towards one end close to the liquid supply side shut-off assembly, the connecting assembly can support the piston module, so that the liquid supply side shut-off assembly is in an open state. The present application realizes the shut-off or opening of the liquid supply side shut-off assembly by controlling the displacement of the piston module, and has a simple structure and is easy to implement.

[0011] In a specific embodiment, the movement of the sealing plug module can drive the movement of the connecting rod, and the movement direction of the sealing plug module is opposite to the movement direction of the connecting rod. The present application drives the movement of the connecting rod through the movement of the sealing plug module, thereby realizing the release or fixation of the piston module, so that the liquid supply side shut-off assembly and the liquid return side shut-off assembly can be closed synchronously, further ensuring the safety of the equipment.

[0012] In a specific embodiment, the liquid supply side shut-off assembly further includes a mounting seat; the mounting seat is provided with a mounting cavity, the mounting cavity is provided with a first liquid inlet and a first liquid outlet, the piston module is arranged in the mounting cavity, and the piston module can reciprocate along the gravity direction in the mounting cavity, so that the first liquid inlet and the first liquid outlet are communicated or disconnected; the liquid return side shut-off assembly is connected to the mounting seat through the connecting assembly. The present application facilitates the installation of the piston module and the control of the shut-off or opening of the liquid supply side shut-off assembly through the setting of the mounting seat.

[0013] In a specific embodiment, the piston module includes a shut-off part and a communication part, and the shut-off part and the communication part are respectively arranged in the mounting cavity; when the piston module moves along the gravity direction towards one end away from the bottom of the mounting cavity, the first liquid inlet and the second liquid return outlet can be communicated through the communication part; when the piston module moves along the gravity direction towards one end close to the bottom of the mounting cavity, the first liquid inlet and the first liquid return outlet can be disconnected through the shut-off part. The present application facilitates the blocking or communication of the first liquid inlet and the second liquid return outlet through the setting of the shut-off part and the communication part.

[0014] In a specific embodiment, the piston module further includes a connecting portion, one end of the connecting portion is respectively connected to the shutting portion and the communicating portion, and the other end of the connecting portion extends out of the mounting seat. Through the arrangement of the connecting portion in this application, it is convenient to move the entire piston module through the connecting portion outside the mounting seat.

[0015] In a specific embodiment, the piston module further includes a limiting portion, the limiting portion is arranged in the mounting cavity, and the limiting portion is used to cooperate with the connecting component for limiting. Through the arrangement of the limiting portion in this application, it is convenient for the connecting component to limit the piston module.

[0016] In a specific embodiment, the limiting portion is connected to the connecting portion.

[0017] In a specific embodiment, the limiting portion is connected to the shutting portion.

[0018] In a specific embodiment, the piston module further includes a first elastic member, and the first elastic member is sleeved on the connecting portion. Through the arrangement of the first elastic member in this application, the piston module is buffered during the moving process, preventing the piston module from being damaged due to too fast moving speed.

[0019] In a specific embodiment, the piston module further includes a limiting member or a limiting structure, and the limiting member or the limiting structure is arranged on the connecting portion and located outside the mounting cavity. Through the arrangement of the limiting member or the limiting structure in this application, it is convenient to operate the connecting portion.

[0020] In a specific embodiment, the piston module further includes a sealing member, and the sealing member is sleeved on both ends of the shutting portion and / or both ends of the communicating portion. Through the arrangement of the sealing member in this application, it is prevented that the liquid leaks out through the shutting portion or the communicating portion.

[0021] In a specific embodiment, the liquid return side shut-off assembly further includes a housing, the housing is provided with a receiving cavity, the receiving cavity is provided with a second liquid inlet and a second liquid outlet, the sealing plug module is movably arranged in the receiving cavity, and the sealing plug module is movably connected to the mounting seat through the connecting component;

[0022] When the sealing plug module moves towards one end close to the second liquid inlet, the second liquid inlet can be shut off through the sealing plug module; when the sealing plug module moves towards the end away from the second liquid inlet, the second liquid inlet can be opened. Through the arrangement of the sealing plug module in this application, in the case of liquid leakage in the pipeline, the liquid return side shut-off assembly can be automatically shut off, thereby preventing the short circuit, failure, etc. of the equipment hardware caused by the liquid leakage in the pipeline, and improving the safety.

[0023] In a specific embodiment, the sealing plug module includes a movable component, which is movably arranged in the accommodating cavity; the movable component is used to move towards one end close to the second liquid outlet in the accommodating cavity under the action of the internal and external pressure difference of the pipeline, so as to shut off the second liquid inlet. By providing a movable component in this application, and this movable component can move under the internal and external pressure difference of the pipeline, thereby shutting off the second liquid inlet, the reliability of the device is improved.

[0024] In a specific embodiment, the sealing plug module further includes a second elastic member, which is arranged at one end close to the second liquid outlet in the accommodating cavity. By providing the second elastic member in this application, the movable component is buffered during the movement process, preventing the movable component from being damaged due to too fast moving speed.

[0025] In a specific embodiment, the sealing plug module further includes a sealing ring, which is sleeved on one end of the movable component close to the second liquid inlet. By providing the sealing ring in this application, the movable component can be hermetically connected to the second liquid inlet, preventing liquid leakage.

[0026] In a specific embodiment, the connection assembly includes a movable connection component and a connecting pipe. The movable connection component includes the connecting rod. One end of the connecting pipe is connected to the first liquid outlet, the other end of the connecting pipe is connected to the second liquid inlet, one end of the connecting rod is connected to the sealing plug module, and the other end of the connecting rod is connected to the side wall of the mounting seat;

[0027] When the sealing plug module moves in the accommodating cavity, the connecting rod can move along with the movement of the sealing plug module, so that the piston module can be fixed or released. By the movement of the connecting rod in this application, the piston module can be fixed or released, and its structure is simple and the operation is convenient.

[0028] In a specific embodiment, the movable connection component further includes a main magnetic core, a sub-magnetic core and a retaining pin. The main magnetic core is arranged on the sealing plug module, the sub-magnetic core is slidably arranged in the outer shell, the retaining pin penetrates through the side wall of the mounting seat, one end of the connecting rod is connected to the sub-magnetic core, and the other end of the connecting rod is connected to the retaining pin. By providing the main magnetic core and the sub-magnetic core in this application, the movement directions of the connecting rod and the movable component are opposite, and its structure is simple and easy to implement.

[0029] In a specific embodiment, the movable connection component further includes a limiting block, which is arranged on the outer wall of the outer shell, and the limiting block is provided with a limiting cavity, and the sub-magnetic core is slidably arranged in the limiting cavity. By the limiting block in this application, the sliding track of the sub-magnetic core is restricted, and further the movement direction of the connecting rod is restricted, so that the retaining pin can smoothly move in the side wall of the mounting seat.

[0030] In a specific embodiment, the movable connecting component further includes a third elastic member and a fourth elastic member. The third elastic member and the fourth elastic member are respectively disposed in the limiting cavity and located at both ends of the auxiliary magnetic core. In the present application, the movement of the auxiliary magnetic core is buffered by the third elastic member and the fourth elastic member to prevent the auxiliary magnetic core from being damaged due to too fast movement speed.

[0031] In a specific embodiment, the bottom of the end of the retaining pin close to the piston module has an inclined surface. In the present application, by setting the bottom of the end of the retaining pin close to the piston module as an inclined surface, when the piston module moves upward and touches the retaining pin, it is convenient for the piston module to move upward across the retaining pin.

[0032] In a specific embodiment, the liquid supply side shut-off assembly further includes a guide pin, and the guide pin is used to drive the piston module to move in the direction of gravity. In the present application, by providing the guide pin, it is more convenient to drive the piston module to move upward.

[0033] Correspondingly, the present application also discloses a liquid cooling system, which includes: a cooling component for being disposed in a cabinet to cool a heating device disposed on the cabinet; the cooling component includes a pipeline; a coolant supply mechanism for supplying coolant to the cooling component; a two-way automatic shut-off device disposed in the pipeline for automatically shutting off the pipeline in the case of liquid leakage in the pipeline; wherein, the two-way automatic shut-off device is the above-mentioned two-way automatic shut-off device. Through this liquid cooling system of the present application, the heat generated by the heating device can be taken away, preventing the heating device from overheating and malfunctioning or being unable to work properly. And through the setting of the two-way automatic shut-off device, the pipeline can be automatically shut off in the case of liquid leakage in the pipeline, preventing the device from being damaged due to liquid leakage in the pipeline.

[0034] Compared with the prior art, the present application is a pure mechanical two-way automatic shut-off device. In scenarios such as equipment installation and regular maintenance, that is, when the equipment is in a state of not being powered on, if liquid leakage occurs, the supply and return liquid pipelines can still be cut off in time, with high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of a liquid cooling system in the prior art.

[0036] Figure 2 It is a schematic structural diagram of a cooling component in a liquid cooling system in the prior art.

[0037] Figure 3 It is a partial schematic structural diagram of a cooling component in a liquid cooling system in the prior art.

[0038] Figure 4 Partial view of the two-way automatic shut-off device provided by the embodiment of the present application.

[0039] Figure 5 Cross-sectional view of the liquid supply side shut-off component in the two-way automatic shut-off device provided by the embodiment of the present application.

[0040] Figure 6 Cross-sectional view of the liquid supply side shut-off component in the two-way automatic shut-off device provided by another embodiment of the present application.

[0041] Figure 7 Cross-sectional view of the liquid return side shut-off component in the two-way automatic shut-off device provided by the embodiment of the present application.

[0042] Figure 8 Cross-sectional view of the liquid supply side shut-off component in the two-way automatic shut-off device provided by the embodiment of the present application in the shut-off state.

[0043] Figure 9 Cross-sectional view of the liquid supply side shut-off component in the two-way automatic shut-off device provided by the embodiment of the present application during the process of changing from the shut-off state to the open state.

[0044] Figure 10 Cross-sectional view of the two-way automatic shut-off device provided by the embodiment of the present application in the liquid leakage state.

[0045] Figure 11 Structural schematic diagram of the liquid cooling system provided by the embodiment of the present application.

[0046] Reference numerals:

[0047] 1. Liquid supply side shut-off component; 11. Mounting base; 111. Mounting cavity; 112. First liquid inlet; 113. First liquid outlet; 114. First through hole; 115. Second through hole; 12. Piston module; 121. Limiting part; 122. Connecting part; 123. Shut-off part; 124. Connecting part; 125. First elastic part; 126. Limiting part; 127. Sealing part; 13. Guide pin; 2. Liquid return side shut-off component; 21. Outer shell; 211. Accommodating cavity; 212. Second liquid inlet; 213. Second liquid outlet; 22. Sealing plug module; 221. Moving part; 222. Second elastic part; 223. Sealing ring; 3. Connecting component; 31. Movable connecting part; 311. Main magnetic core; 312. Sub-magnetic core; 313. Connecting rod; 314. Limiting block; 314a. Limiting cavity; 315. Third elastic part; 316. Fourth elastic part; 317. Stop pin; 32. Connecting pipe; 100. Bidirectional automatic shut-off device; 200. Cooling component; 201. Liquid supply and return branch pipe; 202. Cold plate joint; 203. Liquid supply and return branch pipe; 204. Cold plate; 300. Cooling liquid supply mechanism; 301. Cooling tower; 302. Primary side liquid supply pipeline; 303. Cooling capacity distribution unit; 304. Secondary side liquid supply pipeline; 400. Cabinet. Detailed implementation manners

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] In the description of the present application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plural" means two or more; the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the description of this specification, it should be understood that the orientation terms such as "upper" and "lower" described in the embodiments of the present application are described from the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element.

[0051] In the era of the big data explosion, especially with the development of Artificial Intelligence (AI), the amount of data has been increasing exponentially. In large-scale data centers, data operations and storage are supported by high-density and high-power hardware. One problem brought about by such development is heat dissipation. Currently, air is usually used as the heat dissipation medium in data centers, with low heat transfer efficiency (PUE = 1.5, where PUE refers to the Power Usage Effectiveness, and PUE = total power consumption of the data center / total power consumption of IT equipment). The electricity cost consumed by the air conditioning system accounts for 40% of the operating expenditure (OPEX) of the data center, and the demand for efficient heat dissipation is becoming increasingly urgent.

[0052] Looking at the development of chips themselves, chip technology is evolving towards 5-nanometer (nm) technology, and more and more transistors are integrated in the same area of DIE (a small unit in a silicon wafer, including a complete single chip design and part of the scribe line area in the horizontal and vertical directions adjacent to the chip). At the same time, the industry uses technologies such as multi-DIE co-packaging and 3D stacking. The power consumption of central processing unit (CPU) / graphics processing unit (GPU) chips has soared directly from the traditional 200W to 400W - 700W, and traditional air cooling has encountered bottlenecks.

[0053] Regarding the efficient heat dissipation and high-performance computing faced by data centers, which are key issues in data centers, liquid cooling technology has become the most rapidly developed and highly regarded solution in the industry in recent years.

[0054] Key terms are defined as follows:

[0055] Liquid cooling, a heat dissipation technology that uses a liquid to take away the heat of a heater. It is a form of implementation that indirectly transfers the heat of a heat-generating device to a cooling liquid enclosed in a circulating pipeline through a cold plate (a closed cavity composed of heat-conducting metals such as copper and aluminum), and then takes away the heat through the cooling liquid. It is applicable to application scenarios that require improved computing power, energy efficiency, deployment density, etc.

[0056] Furthermore, the so-called liquid cooling means using liquid as the heat transfer medium, which conducts heat through a cold plate filled with liquid (usually a closed cavity made of heat-conducting metals such as copper and aluminum), and then takes away the heat through a liquid circulation mechanism. Due to the higher efficiency and lower energy consumption of liquid working media, they are beginning to stand out. The liquid cooling system uses liquid as the heat transfer medium, and its specific heat capacity is 1000 times that of air. It can not only solve the heat dissipation problem of high-power chips but also reduce the energy consumption of data centers (PUE = 1.1), and is gradually promoted as a key measure for energy conservation.

[0057] Refer to Figure 1 as shown Figure 1 Figure 1 is a schematic structural diagram of a liquid cooling system in the prior art. The liquid cooling system includes, from the outside to the inside: a cooling tower 301', a primary side liquid supply pipeline 302', a cold quantity distribution unit (CDU) 303', a secondary side liquid supply pipeline 304', a cooling component 200', etc. Among them, the cooling tower 301', the primary side liquid supply pipeline 302', the cold quantity distribution unit 303', and the secondary side liquid supply pipeline 304' form a coolant supply mechanism 300'.

[0058] Cooling tower 301': A device used to dissipate the heat of the liquid circuit to the outdoor atmosphere, usually placed outdoors of a building.

[0059] Primary side liquid supply pipeline 302': A circulating liquid supply system connecting the cooling tower 301' and the CDU 303', including pipelines and flowing liquid.

[0060] CDU 303': A cold quantity distribution unit, a system used to distribute the cooling liquid among liquid-cooled electronic equipment rooms, providing functions such as secondary side flow distribution, pressure control, physical isolation, and anti-condensation.

[0061] Secondary side liquid supply pipeline 304': A dedicated coolant circulation system connecting the CDU 303' and the cooling component 200', including pipelines and flowing liquid.

[0062] Refer to Figure 2 Figure 2 is a schematic structural diagram of the cooling component 200' in the liquid cooling system of the prior art. The cooling component 200' includes components such as a liquid supply and return joint 205', a liquid supply and return branch pipe 201', a cold plate joint 202', a liquid supply and return branch pipe 203', and a cold plate 204'. The cold plate 204' is located inside the computing node of the cabinet 400', and realizes the heat transfer from the chip to the cooling component 200' by overlapping with the chip. Through this liquid cooling system, the liquid circulates in the cooling loop, the liquid converges on the cabinet side, is connected to the CDU through the secondary side liquid supply pipeline 304' in this system, and takes away the heat in the cooling equipment through heat exchange.

[0063] See Figure 3, which is a partial structural schematic diagram of a cooling component in a prior art liquid cooling system. The cold plate 204' is arranged in the cabinet 400'. One end of the supply and return liquid branch pipe 203' is connected to the cold plate joint 202', and the other end of the supply and return liquid branch pipe 203' is connected to the cold plate 204', so that the cooling liquid can flow into from a part of the cold plate joint 202', flow through the cold plate 204' via the supply and return liquid branch pipe 203', and then flow out via the supply and return liquid branch pipe 203' and another part of the cold plate joint 202' to take away the heat generated by the heat generating equipment installed in the cabinet 400'.

[0064] The liquid cooling system usually uses water as the working medium. Once leakage occurs, it will cause short circuits, failures of IT equipment hardware, and even data loss and business interruption. The reasons for leakage include: perforation caused by pipeline corrosion, defects in the pipeline base material, external force collision, etc. Therefore, leakage has always been the primary concern of customers. The current liquid cooling system is usually configured with a liquid leakage detection circuit and a liquid supply pipeline cutoff device.

[0065] The liquid leakage detection circuit in the prior art usually uses a rope-shaped liquid leakage detection sensor for detection. The rope-shaped liquid leakage detection sensor includes 2 light-weight high-density polyethylene wires. When the water working medium is sensed, the resistance inside the wires will change. Specifically, the rope-shaped liquid leakage detection sensor is distributed along the supply and return liquid branch pipe 203'. If a leakage accident occurs, the control circuit judges whether leakage has occurred through the change in the resistance of the rope-shaped liquid leakage detection sensor, thereby sending a control signal to turn off the solenoid valve, and then cutting off the liquid supply of the supply and return liquid pipeline, cutting off the liquid supply of the supply and return liquid branch pipe 201' and / or the supply and return liquid branch pipe 201'. Among them, the solenoid valve in this application refers to an industrial device controlled by electricity and is used to control the flow rate, direction, speed, etc. of the fluid. When the switch-type solenoid valve is powered on, the electromagnetic coil generates an electromagnetic force to lift the closing member from the valve seat, and the valve opens. When powered off, the electromagnetic force disappears, and the spring presses the closing member against the valve seat, and the valve closes.

[0066] The above-mentioned prior art liquid cooling system has the following deficiencies:

[0067] 1. The sensor, control circuit, and solenoid valve are all powered by +12V or +24V, belonging to an active circuit; during the installation and regular maintenance of the equipment, the equipment is in a state of not being powered on, and at this time, leakage cannot be shut off.

[0068] 2. When leakage occurs during the operation of the equipment with power on, the control circuit solenoid valve may be within the range covered by the flow of the liquid working medium and is in an unreliable state itself, unable to ensure that all 100% leakage scenarios can be shut off.

[0069] 3. The rope-shaped liquid leakage sensor uses the resistance detection principle. In the case of a high humidity environment in the computer room, there is a low probability of false alarms, resulting in accidental shutdown.

[0070] 4. Since the shape of the cold plate is irregular, it is difficult to fix the placement of the rope-shaped sensor nearby. Usually, it can only cover part of the branch pipeline and cannot cover 100%, resulting in detection blind spots.

[0071] There are also one-way valves in the prior art that utilize fluid thrust. When leakage occurs, they can shut off the liquid supply to the supply-side pipeline, but cannot shut off the liquid return flow in the return-side pipeline. At the same time, since the closing valve of this one-way valve is not in the same horizontal direction as the liquid flow direction, the liquid supply flow resistance is relatively large.

[0072] Refer to Figure 4 as shown in Figure 4 This is a cross-sectional view of the two-way automatic shut-off device provided by the embodiment of the present application. The embodiment of the present application discloses a two-way automatic shut-off device 100. The two-way automatic shut-off device 100 includes a supply-side shut-off assembly 1, a return-side shut-off assembly 2, and a connection assembly 3; the return-side shut-off assembly 2 is connected to the supply-side shut-off assembly 1 through the connection assembly 3. When the two-way automatic shut-off device 100 is installed in a pipeline and a liquid leakage occurs in the pipeline, under the action of the internal and external pressure difference in the pipeline, some components of the return-side shut-off assembly 2 move along Figure 4 the +X direction in Figure 4 the liquid flow direction in the second liquid inlet 212 of the shut-off assembly 2 is the -X direction, and the direction opposite to the -X direction is the +X direction) towards one end close to the supply-side shut-off assembly 1, causing the return-side shut-off assembly 2 to shut off, and driving some components of the connection assembly 3 to move along Figure 4 the -X direction in

[0073] The present application uses a detection and shut-off device with a pure mechanical structure, utilizes the pressure of the liquid supply working medium in the pipeline to realize the conduction and closing of the liquid supply pipeline, and adopts a magnetic induction or mechanical linkage method to realize the shut-off control of the liquid cooling system, avoiding the reliability problem of the circuit shut-off method, and at the same time solving the problem that the sensor cannot achieve full coverage.

[0074] When the two-way automatic shut-off device of the present application is in scenarios such as installation and regular maintenance, that is, when the device is in a state of not being powered on, if a leakage occurs, it can timely cut off the supply and return liquid pipelines, and support effective shut-off in both active and passive states. In the case of leakage between the node pipeline and the cold plate, the leaked liquid working medium will not cause short circuits, functional failures, etc. to the detection and shut-off device, ensuring 100% scenario shut-off.

[0075] Refer to Figure 5 as shown in Figure 5This is a cross-sectional view of the liquid supply side shut-off component in the two-way automatic shut-off device provided by the embodiments of the present application. The liquid supply side shut-off component 1 includes a mounting base 11 and a piston module 12. The piston module 12 includes a limiting portion 121, a connecting portion 122, a shut-off portion 123, a communicating portion 124, a first elastic member 125, and a limiting member 126. The mounting base 11 is provided with a mounting cavity 111, and the mounting cavity 111 is provided with a first liquid inlet 112, a first liquid outlet 113, a first through hole 114, and a second through hole 115. The first through hole 114 is located at the top of the mounting cavity 111, and the second through hole 115 is located on the side wall of the mounting cavity 111. The communicating portion 124 is provided with a channel (not marked in the figure). During assembly, the shut-off portion 123 and the communicating portion 124 are respectively arranged in the mounting cavity 111. One end of the connecting portion 122 is connected to the shut-off portion 123 and the communicating portion 124. The other end of the connecting portion 122 passes through the mounting base 11, and the limiting portion 121 is connected to the connecting portion 122. The first elastic member 125 is sleeved on the connecting portion 122. One end of the first elastic member 125 is connected to the limiting portion 121, and the other end of the first elastic member 125 is connected to the inner wall of the mounting base 11. The limiting member 126 is arranged outside the mounting cavity 111 and is connected to the end of the connecting portion 122 that passes through the mounting base 11. When the connecting portion 122 reciprocates in the mounting cavity 11 along the gravity direction ( Figure 4 or Figure 5 the Y direction in the figure), the shut-off portion 123 and the communicating portion 124 can move along with the movement of the connecting portion 122. When the piston module 12 moves along the gravity direction to a specific position away from the bottom of the mounting cavity 111, such that the communicating portion 124 is located between the first liquid inlet 112 and the first liquid outlet 113, and the first liquid inlet 112, the channel of the communicating portion 124, and the first liquid outlet 113 are at the same horizontal height, the liquid flowing in from the first liquid inlet 112 can flow through the channel of the communicating portion 124 to the first liquid outlet 113 and flow out from the first liquid outlet 113. When the piston module 12 moves along the gravity direction to a certain position close to the bottom of the mounting cavity 111, such that the shut-off portion 123 is located between the first liquid inlet 112 and the first liquid outlet 113, the first liquid inlet 112 and the first liquid outlet 113 are not communicated, and the liquid flow pipeline between the first liquid inlet 112 and the first liquid outlet 113 is shut off.

[0076] Furthermore, the piston module 12 further includes a plurality of sealing members 127. The liquid supply side shut-off component 1 further includes a guide pin 13. Among them, sealing members 127 are respectively arranged on the upper and lower sides of the shut-off portion 123, and sealing members 127 are also respectively arranged on the upper and lower sides of the communicating portion 124. The guide pin 13 is used to push the limiting member 126, so that the limiting member 126 moves along the gravity direction away from the mounting base 11, thereby driving the connecting portion 122, the limiting portion 121, the shut-off portion 123, and the communicating portion 124 to move along the gravity direction away from the bottom of the mounting cavity 111.

[0077] In this embodiment, the limiting portion 121 is connected to the connecting portion 122. It can be understood that in other embodiments, the limiting portion 121 can also be connected to the shutting-off portion 123. One end of the first elastic member 125 is connected to the shutting-off portion 123, and the other end of the first elastic member 125 is connected to the inner wall of the mounting base 11. Refer to Figure 6 as shown.

[0078] In addition, in this embodiment, the piston module 12 includes a limiting member 126. The limiting member 126 is connected to one end of the connecting portion 122 that passes through the mounting base 11. Through the cooperation of the limiting member 126 and the guide pin 13, the connecting portion 122 can drive the limiting portion 121, the shutting-off portion 123, and the communicating portion 124 to move in the direction away from the bottom of the mounting cavity 111 along the gravity direction. It can be understood that in other embodiments, the piston module 12 can also include a limiting structure (such as a limiting groove). The limiting structure is provided at one end of the connecting portion 122 that passes through the mounting base 11. Through the cooperation of the limiting structure and the guide pin 13, the connecting portion 122 can drive the limiting portion 121, the shutting-off portion 123, and the communicating portion 124 to move in the direction away from the bottom of the mounting cavity 111 along the gravity direction.

[0079] Refer to Figure 7 as shown, Figure 7 This is a cross-sectional view of the liquid return side shut-off assembly in the two-way automatic shut-off device provided by the embodiment of the present application. The liquid return side shut-off assembly 2 includes a housing 21 and a sealing plug module 22. The housing 21 is provided with a receiving cavity 211. The receiving cavity 211 is provided with a second liquid inlet 212 and a second liquid outlet 213. The sealing plug module 22 includes a movable member 221 and a second elastic member 222. The movable member 221 is disposed at one end of the receiving cavity 211 close to the second liquid inlet 212. The second elastic member 222 is disposed at one end of the receiving cavity 211 close to the second liquid outlet 213. And both ends of the second elastic member 222 are respectively connected to the movable member 221 and the inner wall of the housing 21. Among them, both the housing 21 and the movable member 221 are made of plastic materials.

[0080] When the two-way automatic shut-off device 100 is installed in a pipeline and a liquid leakage occurs in the pipeline, the movable member 221 can move in the receiving cavity 211 along the -Y direction towards the end close to the second liquid inlet 212 under the action of the internal and external pressure difference of the pipeline, so that the second liquid inlet 212 is shut off, that is, the liquid flow pipeline in the liquid return side shut-off assembly 2 is shut off. When the movable member 221 moves in the receiving cavity 211 towards the end close to the second liquid outlet 213, the second liquid inlet 212 can be opened, so that the liquid can flow in from the second liquid inlet 212 and flow out from the second liquid outlet 213.

[0081] Further, the sealing plug module 22 further includes a sealing ring 223, and the sealing ring 223 is sleeved on one end of the movable member 221 close to the second liquid inlet 212. By providing the sealing ring 223, the movable member 221 can be hermetically connected to the inner wall of the housing 21.

[0082] Continue to refer to Figure 4 As shown, the connection assembly 3 includes a movable connection member 31 and a connecting pipe 32. The movable connection member 31 includes a main magnetic core 311, a sub-magnetic core 312, a connecting rod 313, a limiting block 314, a third elastic member 315, a fourth elastic member 316, and a retaining pin 317. The limiting block 314 is provided with a limiting cavity 314a. During assembly, one end of the connecting pipe 32 is connected to the first liquid outlet 113, and the other end of the connecting pipe 32 is connected to the second liquid inlet 212. The main magnetic core 311 is disposed on the outer wall of the movable member 221, the limiting block 314 is disposed on the outer wall of the housing 21, and the sub-magnetic core 312 is slidably disposed in the limiting cavity 314a. Among them, the magnetic force of the main magnetic core 311 and the magnetic force of the sub-magnetic core 312 are repulsive forces, so that the movement direction of the sub-magnetic core 312 is opposite to the movement direction of the main magnetic core 311. The third elastic member 315 and the fourth elastic member 316 are respectively disposed in the limiting cavity 314a and located at both ends of the sub-magnetic core 312. The retaining pin 317 passes through the second through hole 115, one end of the connecting rod 313 is connected to the sub-magnetic core 312, and the other end of the connecting rod 313 is connected to the retaining pin 317 to achieve linkage.

[0083] Further, the connection assembly 3 further includes a fifth elastic member (not shown in the figure). The fifth elastic member is sleeved on the retaining pin 317, and the retaining pin 317 is buffered when moving through the fifth elastic member. And the bottom of one end of the retaining pin 317 close to the piston module 12 has an inclined surface. Through the setting of this inclined surface, when the limiting portion 121 moves upward and touches the retaining pin 317, it is convenient to move upward over the retaining pin 317 ( Figure 4 not marked in the figure).

[0084] In this embodiment, the above elastic members are springs. It can be understood that in other embodiments, the elastic members can also be other elastic components.

[0085] The working principle of this two-way automatic shut-off device is described as follows:

[0086] When the automatic shut-off device 100 is installed on a liquid circulation pipeline, such as a liquid cooling system, the first liquid inlet 112 is connected to a liquid supply pipeline, the first liquid outlet 113 is connected to the second liquid inlet 212 through a cooling component (such as a cold plate), and the second liquid outlet 113 is connected to a return water pipeline.

[0087] When the two-way automatic shut-off device 100 is not activated, under the action of the first elastic member 125, the piston module 12 is located at the bottom of the mounting seat 11. At this time, the shut-off portion 123 is located between the first liquid inlet 112 and the first liquid outlet 113, blocking the liquid supply passage. Under the action of the second elastic member 222, the movable member 221 moves towards the end close to the second liquid inlet 212 in the accommodation cavity 211, and is in close contact with the inner wall of the accommodation cavity 211 through the sealing ring 223, shutting off the second liquid inlet 212 and achieving the shut-off of the pipeline. At this time, the secondary magnetic core 312 is far from the main magnetic core 311, driving the stop pin 317 to be in an off-line state.

[0088] Referring to Figure 8 and Figure 9 as shown, Figure 8 is a cross-sectional view of the liquid supply side shut-off assembly in the two-way automatic shut-off device provided by the embodiment of the present application in the shut-off state; Figure 9 is a cross-sectional view of the liquid supply side shut-off assembly in the two-way automatic shut-off device provided by the embodiment of the present application during the process of changing from the shut-off state to the open state. During the startup process of the two-way automatic shut-off device 100, the guide pin 13 is inserted between the limiting member 126 and the mounting seat 11. Under the thrust of the guide pin 13, the limiting member 126 moves towards the end far from the mounting seat 11 along the direction of gravity, driving the connecting portion 122, the limiting portion 121, the shut-off portion 123 and the communicating portion 124 to move towards the end far from the bottom of the mounting cavity 111 along the direction of gravity, and the first elastic member 125 is compressed. When the limiting member 126 reaches the highest position of the guide pin 13, the horizontal height of the limiting portion 121 is higher than the horizontal height of the stop pin 317. At this time, the first liquid inlet 112, the channel of the communicating portion 124, and the position of the first liquid outlet 113 are at the same horizontal height, and the liquid supply passage of the liquid supply side shut-off assembly 1 is opened. After the liquid supply passage in the liquid supply side shut-off assembly 1 is opened, the liquid working medium flows into the cold plate 204 through the pipeline under the action of pressure, and then flows out of the cold plate 204 to the liquid return side shut-off assembly 2. Among them, the liquid supply pressure is generally 2.5 - 3.0 bar, and a pressure difference will be formed at both ends of the movable member 221, pushing the movable member 221 away to make the entire liquid supply passage conduct and work normally. At this time, since the movable member 221 moves towards the direction close to the second liquid outlet 213, that is, the main magnetic core 311 moves towards the direction close to the second liquid outlet 213, the secondary magnetic core 312 moves towards the direction close to the second liquid inlet 212, and then drives the connecting rod 313 and the stop pin 317 to move away from the second liquid outlet 213, so that the stop pin 317 extends into the mounting cavity 111 and is located below the limiting portion 212, supporting the limiting portion 121 and entering the locked state. At this time, the guide pin 13 is removed. Since the stop pin 317 supports the limiting portion 121, the entire piston module 12 will not move downwards, ensuring the normal operation of the entire automatic shut-off device 100.

[0089] Referring to Figure 10 as shown,Figure 10 This is a cross-sectional view of the two-way automatic shut-off device provided by the embodiment of the present application in a liquid leakage state. During the liquid leakage detection and closing process: When the pipeline between the liquid supply side shut-off component 1 and the liquid return side shut-off component 2 leaks, since the pressure inside the pipeline is 2.5 bar and the pressure outside the pipeline is 1.0 bar, there is a pressure difference between the inside and outside of the pipeline. The moving part 221 moves in the direction close to the second liquid inlet 212 under the action of this pressure difference, closing the second liquid inlet 212. The main magnetic core 311 and the secondary magnetic core 312 are in a mutually exclusive relationship, and their moving directions are exactly opposite. The main magnetic core 311 installed on the moving part 221 moves in the direction close to the second liquid inlet 212, and the secondary magnetic core 312 moves in the direction close to the second liquid outlet 213, thereby driving the connecting rod 313 and the retaining pin 317 to move in the direction close to the second liquid outlet 213, so that the retaining pin 317 disengages from the limiting part 121. The limiting part 121 moves downward under the spring force of the first elastic member 125, and shuts off the first liquid inlet 112 through the shut-off part 123, closing the liquid circulation pipeline. Among them, the friction coefficient between the retaining pin 317 and the mounting seat 11 is approximately 0.02 - 0.05, the force required to drive the retaining pin 317 to move is 1.5 N, and the force to push the moving part 221 can reach 5.0 N. In this way, the liquid supply side and the liquid return side of the two-way automatic shut-off device 100 are both sealed.

[0090] The present application utilizes the liquid supply pressure difference formed during liquid leakage to achieve the closing of the pipeline on the liquid return side. At the same time, by using the magnetic induction method, it drives the movement of the retaining pin located on the liquid supply side, and then realizes the closing of the pipeline on the liquid supply side. Compared with the electronic detection and shut-off scheme, it has the following advantages:

[0091] 1. The covered scenarios are more extensive, effectively expanding the application scenarios of detection and shut-off, whether the device is in the power-on state or the device is in the non-powered state.

[0092] 2. It improves the reliability of the liquid cooling system and effectively avoids the problem of the unreliability of the circuit itself in the event of leakage when the device is in the power-on state.

[0093] 3. By adopting a mechanical detection and shut-off device, it effectively avoids the problem that sensors cannot cover all leakage points.

[0094] Refer to Figure 11As shown in the figure, an embodiment of the present application also discloses a liquid cooling system, which includes a cooling component 200, a coolant supply mechanism 300, and the above-mentioned two-way automatic shut-off device 100. The cooling component 200 is used to be arranged in the cabinet to take away the heat of the heat-generating devices installed on the cabinet through the coolant, so as to cool the heat-generating devices. The coolant supply mechanism 300 is connected to the cooling component 200 and is used to supply coolant to the cooling component 200. The two-way automatic shut-off device 100 is installed in the pipeline of the cooling component 100 and is used to shut off the liquid circulation pipeline of the cooling component 200.

[0095] Specifically, the coolant supply mechanism 300 includes a cooling tower 301, a primary side liquid supply pipeline 302, a cooling capacity distribution unit 303, and a secondary side liquid supply pipeline 304. The cooling tower 301 is connected to the cooling capacity distribution unit 303 through the primary side liquid supply pipeline 302, and the cooling capacity distribution unit 303 is connected to the secondary side liquid supply pipeline 304.

[0096] The cooling component 200 includes a supply and return liquid branch pipe 201, a cold plate joint 202, a supply and return liquid branch pipe 203, and a cold plate 204. The cold plate 204 is arranged on the heat-generating devices in the cabinet. The secondary side liquid supply pipeline 304 is connected to the supply and return liquid branch pipe 201. The supply and return liquid branch pipe 201 is connected to the supply and return liquid branch pipe 203 through the cold plate joint 202, and the supply and return liquid branch pipe 203 is connected to the cold plate 204. The two-way automatic shut-off device 100 is arranged on the supply and return liquid branch pipe 201 and the supply and return liquid branch pipe 203. Further, when the two-way automatic shut-off device is installed on the supply and return liquid branch pipe 201, the liquid supply side shut-off component 1 is installed on the liquid supply branch pipe, and the liquid return side shut-off component 2 is installed on the liquid return branch pipe; when the two-way automatic shut-off device 100 is installed on the supply and return liquid branch pipe 203, the liquid supply side shut-off component 1 is installed on the liquid supply branch pipe, and the liquid return side shut-off component 2 is installed on the liquid return branch pipe.

[0097] Continue to refer to Figure 10 shown in Figure 10 is a schematic structural diagram of the liquid cooling system provided by the embodiment of the present application. In the liquid cooling system of the present application, by installing the two-way automatic shut-off device 100 on the liquid supply pipeline between the cold plate joint 202 and the cold plate 204, the monitored pipeline is the flow path from A1 to B2. If there is a leakage in the liquid circulation path between A1 and B1, the two-way automatic shut-off device 100 closes the passage to prevent the internal failure of the computing nodes in the cabinet from spreading further.

[0098] In the liquid cooling system of the present application, by installing the automatic shut-off device 100 at the connection between the supply and return liquid branch pipe 201 and the secondary side liquid supply pipeline 304, the monitored pipeline is the liquid flow path from A2 to B2. If there is a leakage in the liquid path between A2 and B2, the two-way automatic shut-off device closes the passage to prevent the internal failure of the cabinet from spreading further.

[0099] The hardware costs borne by high-performance computing and AI (Artificial Intelligence) computing are extremely high. When using liquid cooling for heat dissipation, the leakage of liquid cooling pipelines is a key concern for customers. Once leakage occurs, it is necessary to be able to promptly control the scope and stop losses, and a highly reliable leakage shut-off device is a mandatory requirement. This application solves the problems of live detection and shut-off requirements of conventional detection systems, such as small coverage and low reliability.

[0100] In the above embodiment, the main magnetic core is installed on the sealing plug module to drive the movement of the secondary magnetic core, so as to realize non-contact force transmission to control the closing of the liquid supply side valve. The specific design is not limited to the fixing method and movement direction of the magnetic core, and may also include movement in the front-back direction and movement in the radial direction. The connecting rod transmission method is not limited to direct connection, and indirect connection using a rotating shaft can also be adopted, etc. The force transmission method of the above stress transmission mechanism can also be a contact force transmission method, such as being realized through an internal and external waterproof connecting rod.

[0101] In the liquid supply side of the above embodiment, a direct liquid supply passage is adopted on the piston module, and the position change of the sealing ring is increased to realize the on-off of the liquid supply passage. In this way, a linear liquid supply method with the liquid inlet and outlet on both sides of the liquid supply passage is realized, and the pipeline flow resistance and pressure drop are the lowest. However, it should be noted that the implementation method of the liquid supply passage is not limited to the liquid inlet and outlet being on both sides of the piston module, and it can also be on the same side. The sealing ring and the liquid inlet and outlet are not limited to the vertical orthogonal form, and can also be in a parallel overlapping form.

[0102] The starting guide pin in the above embodiment can realize the function of automatically opening the passage and starting the leakage detection when the node hardware is inserted into the cabinet. The starting guide pin is not limited to the method of using an inclined surface to eject the limiting part, and may also include other forms such as a lever and a rotating shaft to convert the lateral movement force into a longitudinal force.

[0103] This application adopts a mechanical detection and shut-off device, which is independent of the hardware system and effectively improves the availability of the liquid cooling system. At the same time, the two-way automatic shut-off device of this application is not only applicable to the leakage detection and shut-off of the liquid cooling system, but can also be used for the detection and shut-off of other pipeline forms such as air-conditioning cold water pipelines and primary side liquid pipelines in the computer room.

[0104] The above is only a preferred specific embodiment of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A two-way automatic shut-off device for detecting liquid leakage in a pipeline; Characterized in that, Comprising: A liquid supply side shut-off component; A liquid return side shut-off component; A connection component, the liquid return side shut-off component is connected to the liquid supply side shut-off component through the connection component; When the two-way automatic shut-off device is installed in the pipeline and a liquid leakage occurs in the pipeline, the sealing plug module of the liquid return side shut-off component is used to move towards one end close to the liquid supply side shut-off component under the action of the internal and external pressure difference of the pipeline, so that the liquid return side shut-off component is shut off, and drives the connecting rod in the connection component to move towards the end away from the liquid supply side shut-off component, so that the liquid supply side shut-off component is shut off.

2. The two-way automatic shut-off device according to claim 1, Characterized in that, When the connecting rod moves towards the end away from the liquid supply side shut-off component, it can cause the piston module in the liquid supply side shut-off component to move, so that the liquid supply side shut-off component is shut off; When the connecting rod moves towards the end close to the liquid supply side shut-off component, the connection component can support the piston module, so that the liquid supply side shut-off component is in an open-holding state.

3. The two-way automatic shut-off device according to claim 2, Characterized in that, The movement of the sealing plug module can drive the movement of the connecting rod, and the movement direction of the sealing plug module is opposite to the movement direction of the connecting rod.

4. The two-way automatic shut-off device according to claim 2, Characterized in that, The liquid supply side shut-off component further includes a mounting seat; The mounting seat is provided with a mounting cavity, the mounting cavity is provided with a first liquid inlet and a first liquid outlet, the piston module is arranged in the mounting cavity, and the piston module can reciprocate along the gravity direction in the mounting cavity, so that the first liquid inlet and the first liquid outlet are communicated or disconnected; The liquid return side shut-off component is connected to the mounting seat through the connection component.

5. The two-way automatic shut-off device according to claim 4, Characterized in that, The piston module includes a shut-off part and a communication part, and the shut-off part and the communication part are respectively arranged in the mounting cavity; When the piston module moves along the gravity direction towards the end away from the bottom of the mounting cavity, the first liquid inlet and the first liquid outlet can be communicated through the communication part; when the piston module moves along the gravity direction towards the end close to the bottom of the mounting cavity, the first liquid inlet and the first liquid outlet can be disconnected through the shut-off part.

6. The two-way automatic shut-off device according to claim 5, Characterized in that, The piston module further includes a connecting part, one end of the connecting part is respectively connected to the shut-off part and the communication part, and the other end of the connecting part penetrates out of the mounting seat.

7. The two-way automatic shut-off device according to claim 6, Characterized in that, The piston module further includes a limiting part, the limiting part is arranged in the mounting cavity, and the limiting part is used for cooperating with the connection component for limiting.

8. The two-way automatic shut-off device according to claim 6, Characterized in that, The piston module further includes a first elastic member, and the first elastic member is sleeved on the connecting portion.

9. The two-way automatic shut-off device according to claim 6, characterized in that the piston module further includes a limiting member, and the limiting member is arranged on the connecting portion and located outside the installation cavity.

10. The two-way automatic shut-off device according to claim 5, characterized in that the piston module further includes a sealing member, and the sealing member is sleeved on both ends of the shut-off portion and / or both ends of the communication portion.

11. The two-way automatic shut-off device according to claim 4, characterized in that the liquid return side shut-off assembly further includes a housing, the housing is provided with a receiving cavity, the receiving cavity is provided with a second liquid inlet and a second liquid outlet, the sealing plug module is movably arranged in the receiving cavity, and the sealing plug module is movably connected to the mounting seat through the connecting assembly; When the sealing plug module moves towards one end close to the second liquid inlet, the second liquid inlet can be shut off through the sealing plug module; when the sealing plug module moves towards the end away from the second liquid inlet, the second liquid inlet can be opened.

12. The two-way automatic shut-off device according to claim 11, characterized in that the sealing plug module includes a movable member, and the movable member is movably arranged in the receiving cavity; The movable member is used to move towards one end close to the second liquid outlet in the receiving cavity under the action of the internal and external pressure difference of the pipeline, so as to shut off the second liquid inlet.

13. The two-way automatic shut-off device according to claim 12, characterized in that the sealing plug module further includes a second elastic member, and the second elastic member is arranged at one end close to the second liquid outlet in the receiving cavity.

14. The two-way automatic shut-off device according to claim 12, characterized in that the sealing plug module further includes a sealing ring, and the sealing ring is sleeved on one end of the movable member close to the second liquid inlet.

15. The two-way automatic shut-off device according to claim 11, characterized in that the connecting assembly includes a movable connecting member and a connecting pipe, the movable connecting member includes the connecting rod, one end of the connecting pipe is connected to the first liquid outlet, the other end of the connecting pipe is connected to the second liquid inlet, one end of the connecting rod is connected to the sealing plug module, and the other end of the connecting rod is connected to the side wall of the mounting seat; When the sealing plug module moves in the receiving cavity, the connecting rod can move along with the movement of the sealing plug module, so that the piston module can be fixed or released.

16. The two-way automatic shut-off device according to claim 15, characterized in that the movable connecting member further includes a main magnetic core, a sub-magnetic core and a retaining pin, the main magnetic core is arranged on the sealing plug module, the sub-magnetic core is slidably arranged in the housing, the retaining pin penetrates through the side wall of the mounting seat, one end of the connecting rod is connected to the sub-magnetic core, and the other end of the connecting rod is connected to the retaining pin.

17. The two-way automatic shut-off device according to claim 16, characterized in that The movable connecting component further includes a limit block, the limit block is arranged on the outer wall of the housing, and a limit cavity is formed in the limit block, and the auxiliary magnetic core is slidably arranged in the limit cavity.

18. The two-way automatic shut-off device according to claim 17, wherein, the movable connecting component further includes a third elastic member and a fourth elastic member, the third elastic member and the fourth elastic member are respectively arranged in the limit cavity and located at both ends of the auxiliary magnetic core.

19. The two-way automatic shut-off device according to claim 16, wherein, the bottom of one end of the stop pin close to the piston module has an inclined surface.

20. The two-way automatic shut-off device according to any one of claims 2-19, wherein, the liquid supply side shut-off assembly further includes a guide pin, and the guide pin is used to drive the piston module to move in the direction of gravity.

21. A liquid cooling system, wherein, comprising: a cooling component, the cooling component is used to be arranged in a cabinet to cool a heating device arranged on the cabinet; the cooling component includes a pipeline; a coolant supply mechanism, the coolant supply mechanism is used to supply coolant to the cooling component; a two-way automatic shut-off device, the two-way automatic shut-off device is arranged on the pipeline and used to automatically shut off the pipeline when a liquid leakage occurs in the pipeline; wherein, the two-way automatic shut-off device is the two-way automatic shut-off device according to any one of claims 1-20.

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