Server auxiliary rack liquid cooling device with leakage-proof sealing structure and method thereof

Abstract

The invention relates to the technical field of liquid cooling heat dissipation, in particular to a server auxiliary rack liquid cooling device with a leakage-proof sealing structure and a method of the server auxiliary rack liquid cooling device with the leakage-proof sealing structure. The liquid cooling connecting module comprises a liquid cooling connector, a liquid cooling plug, a connecting pipe and a liquid passing pipe which are sequentially arranged from left to right. When a liquid cooling plug is inserted, the liquid cooling plug pushes the moving valve to move axially and forcibly drives the rotating pipe to rotate through cooperation of the ball and the spiral guide groove, it is ensured that the liquid passing groove in the rotating pipe is aligned and communicated with the liquid passing hole in the liquid passing plate in the final stage of the butt joint process, and mechanical centering and sealing are achieved firstly and then mechanical centering and sealing are achieved. And then time sequence control of the flow channel is started, so that the risk that the refrigerating fluid splashes or leaks from a connector at the moment of connection and disconnection is eliminated.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling heat dissipation device technology, and more specifically, to a server auxiliary rack liquid cooling device and method with a leak-proof sealing structure. Background Technology

[0002] The core of a server auxiliary rack liquid cooling system with a leak-proof sealing structure lies in its multi-layered leak-proof sealing structure. It typically uses high-performance sealing rings and corrosion-resistant sealing joints, and implements redundant sealing design in key parts such as pipe connections and cold plate interfaces, effectively preventing coolant leakage and reducing the risk of server short circuits and damage caused by leakage.

[0003] Patent application number CN202511343270.7 discloses a liquid cooling plug for a server liquid cooling device, including a plug body, a sealing ball, a liquid flow control component, a sealing component, and a connecting nut. The sealing ball is installed inside the plug body, the sealing component is installed at the end of the plug body and extends at least partially into the plug body, the liquid flow control component is installed at the end of the plug body and can move relative to the plug body, and the connecting nut is installed on the outside of the plug body to connect the plug body to the interface.

[0004] However, existing server liquid cooling connection methods lack efficient integrated connection solutions. Liquid cooling connectors are mostly installed and operated independently, requiring manual connection of each connector during server deployment or maintenance. This process is cumbersome, inefficient, and makes it difficult to guarantee the alignment accuracy and consistency of multiple connections. Secondly, common liquid cooling connector leak-proof designs have limitations. Their leak-proof designs are mostly based on static sealing. During the critical dynamic process of pressurized insertion and removal in the system, due to reasons such as asynchronous valve action, delayed spring response, or instantaneous pressure loss of the sealing surface, it is often impossible to achieve precise timing control of "sealing before conduction and then disconnection". This results in liquid splashing at the moment of connection or residual liquid dripping after disconnection, which not only poses risks to electrical safety and equipment damage, but also restricts truly safe hot-swappable operation and maintenance, reducing system availability and maintenance convenience.

[0005] In view of this, we propose a server auxiliary rack liquid cooling device and method with a leak-proof sealing structure. Summary of the Invention

[0006] The purpose of this invention is to provide a server auxiliary rack liquid cooling device and method with a leak-proof sealing structure. Through the linear action of a pull push plate, all liquid cooling plugs can be synchronously driven to accurately insert, mechanically limit, and finally lock their positions, realizing rapid batch docking and disconnection of the server liquid cooling circuit, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A server auxiliary rack liquid cooling device with a leak-proof and sealed structure, including a mobile rack, which has several liquid cooling connection modules arranged side by side inside;

[0009] The liquid cooling connection module includes, from left to right, a liquid cooling connector, a liquid cooling plug, a connecting pipe, and a liquid passage pipe;

[0010] The liquid cooling connector includes an outer tube, a movable valve sliding inside the outer tube, a rotating tube sleeved inside the movable valve, several balls snapped onto the inner wall of the outer tube, a third spring sleeved outside the movable valve, a sealing plug located at the axis of the rotating tube, and a liquid-passing plate that abuts against the left end of the rotating tube.

[0011] When the third spring is in its natural state, the end of the sealing plug is flush with the end of the moving valve. Several regularly distributed guide grooves are provided on the wall of the rotating tube, and three liquid passage grooves are provided on the left end face of the rotating tube. Liquid passage holes are provided on the liquid passage plate, which are distributed alternately with the three liquid passage grooves.

[0012] In the above setup, after the liquid cooling plug is inserted into the outer sleeve, it drives the moving valve to overcome the elastic force of the third spring and move to the left, causing the ball to move along the guide groove trajectory, driving the rotating tube to rotate at a fixed distance, so that the liquid passage groove is connected to the liquid passage hole.

[0013] In the technical solution of the present invention, the mobile frame includes a distribution box, a mobile frame parallel to the left side of the distribution box, a push plate disposed on the outside of the mobile frame, a number of inserts disposed on the outer wall of the push plate near one end of the mobile frame, and a number of limiters disposed inside the mobile frame for fixing the internal structure of the liquid cooling connection module.

[0014] In the technical solution of the present invention, a number of protruding interfaces are welded and fixed on the outer wall of the diversion box, and a number of circular holes that pass through the left and right sides and are used for the liquid cooling connection module to pass through are opened on the outer wall of the moving frame and the push plate. Insertion holes are opened on the outer walls of the upper and lower ends of the push plate, and the insertion block is snapped and fixed on the outer wall of the push plate and its end extends into the interior of the moving frame.

[0015] In the technical solution of the present invention, the limiter includes a collar that is snapped and fixed inside the circular hole on the outer wall of the movable frame, two limit rods that are slidably connected to the protrusions at both ends of the outer wall of the collar, and a first spring sleeved on the outside of the limit rods. The collar has through holes in the protrusions at both ends of the outer wall for the limit rods to slide and communicate with their inner walls. The limit rods have an annular baffle integrally formed for the first spring to apply force. The ends of the limit rods are hemispherical and extend to the outside of the protrusions at both ends of the outer wall of the collar.

[0016] In the technical solution of the present invention, the mobile frame further includes a horizontal rail with a longitudinal cross section in the shape of a U-shape, which is fixedly connected to the outer walls of the upper and lower ends of the diversion box by bolts, a pin that slides inside the horizontal rail, a number of slide rods fixedly connected to the outer wall of the diversion box by bolts, and a second spring sleeved on the outside of the slide rods. The mobile frame and the push plate are both slidably connected to the inner sides of the upper and lower horizontal rails. The end of the slide rod extends to the outer wall of the push plate, and the two ends of the second spring respectively abut against the outer walls of the diversion box and the mobile frame.

[0017] The above setup, through an integrated mobile rack and linkage locking mechanism, integrates multiple independent liquid cooling connection operations into a unified linear action, enabling rapid and accurate batch docking and mechanical locking of server liquid cooling circuits, greatly improving deployment and maintenance efficiency, and ensuring the consistency of multi-way connections.

[0018] In the technical solution of the present invention, the outer sleeve is threaded to the inner side of the protruding interface. The right end of the outer sleeve is funnel-shaped and its inner wall is integrally formed with a concave structure for limiting the position of the moving valve. The moving valve slides inside the outer sleeve. A fixing ring for limiting the position of the ball is snapped at the left end of the moving valve. The rotating tube is rotatably connected to the inner wall of the outer sleeve. The left and right ends of the third spring respectively abut against the inner protruding ring of the inner wall of the outer sleeve and the outer protruding ring of the moving valve. The central axis of the sealing plug is welded and fixed to the center of the inner wall of the rotating tube.

[0019] In the technical solution of the present invention, a sealing ring is placed in the annular groove of the concave structure on the inner wall of the outer sleeve and the annular groove at the end of the sealing plug. The liquid-passing plate is inserted into the convex ring on the inner wall of the outer sleeve. A water-passing bolt with a central hole is threaded into the left side opening of the outer sleeve.

[0020] The above setup, through the mechanical linkage design of the moving valve and the rotating tube, forces the rotating tube to rotate, achieving precise timing control of the flow channel connection action after mechanical docking and sealing are completed. This fundamentally eliminates liquid leakage at the moment of insertion and removal, ensuring the feasibility of safe hot-plugging under energized and liquid conditions.

[0021] In the technical solution of the present invention, the liquid cooling plug includes a tube, a movable plug that slides inside the tube, a water valve that is snapped and fixed at the right end of the tube, a fourth spring placed between the movable plug and the water valve, a threaded tube sleeved outside the right end of the tube, and a rubber ring placed between the tube and the threaded tube.

[0022] In the technical solution of the present invention, the elastic force provided by the fourth spring pushes the movable plug to move to the left, the end of the movable plug is flush with the left side opening of the insertion tube, the inner side of the threaded tube is threaded with a connecting tube, and the right end of the connecting tube is threaded with a liquid-passing tube for supplying refrigerant.

[0023] The above setup, through the combination of the movable plug and the water valve, enables precise interaction and synchronous displacement with the movable valve and sealing plug inside the liquid-cooled connector during insertion. This establishes a controllable and sealed preliminary connection space before the final flow channel is opened, providing a core guarantee for leak-free flow channel switching.

[0024] On the other hand, the present invention also provides a liquid cooling method for a server auxiliary rack with a leak-proof sealing structure, comprising the following steps:

[0025] S1. First, the operator connects the liquid cooling connectors in several sets of liquid cooling connection modules to the protruding interface on the outer wall of the distribution box of the mobile rack through the threaded outer sleeve; at the same time, the liquid cooling plug is connected to the connecting pipe and the liquid passage pipe in sequence to assemble an independent connection component; then, the end of each liquid passage pipe is connected to the liquid cooling plate interface in the server to complete the physical connection preparation between the server and the liquid cooling circuit.

[0026] S2. Next, the assembled connecting components are passed through the corresponding round holes in the moving frame and the push plate in sequence; during this process, the connecting nut at the end of the liquid inlet tube is blocked by the annular convex ring on the inner side of the collar in the limiter, thus achieving initial positioning;

[0027] S3. After all connecting components are in place, the operator pulls the push plate towards the moving frame, causing the end of the insert on the push plate to press against the limit rod in the limiter; the limit rod overcomes the elastic force of the first spring and retracts inward, and its inner end passes through the through hole on the collar, thereby clamping and fixing the nut at the end of the liquid pipe, realizing the mechanical locking of the connecting components.

[0028] S4. Then, continue to pull the push plate to move the moving frame against the elastic force of the second spring towards the distribution box until all liquid cooling plugs are fully inserted into the corresponding liquid cooling connectors. At this time, pass the pin through the horizontal rail and insert it into the socket of the push plate to lock the entire moving frame in the docking state.

[0029] S5. During the process of inserting the liquid cooling plug into the liquid cooling connector, the insertion end of the liquid cooling plug pushes the movable valve inside the liquid cooling connector, causing it to move to the left against the elastic force of the third spring; at the same time, the sealing plug inside the movable valve synchronously presses against the movable plug inside the liquid cooling plug, causing the movable plug to move to the right against the elastic force of the fourth spring; through the synchronous axial displacement of the valve cores on both sides, the front flow channel space inside the movable valve and the central flow channel space inside the insertion tube are interconnected, forming a preliminary channel for the refrigerant to flow.

[0030] S6. As the insertion action continues, the ball fixed to the inner wall of the moving valve enters the spiral section from the straight section of the guide groove on the rotating tube; the ball moves along the trajectory of the spiral section, driving the rotating tube to rotate at a certain angle relative to the outer tube; when the rotating tube rotates to the set position, the liquid passage groove on the end face of the rotating tube is completely aligned with and connected to the liquid passage hole on the liquid passage plate; at this point, the final flow channel of the liquid cooling circuit is completely opened.

[0031] S7. After completing the above docking and locking, start the external cooling circulation system. The refrigerant is input into the distribution box through the main pipe. The refrigerant is distributed to each liquid cooling connector in the distribution box. It passes through the connected liquid passage, liquid passage tank, common flow channel opened by the moving valve and moving plug, insertion pipe, and connecting pipe in sequence. Finally, it is transported to the liquid cooling plate in the server through the liquid passage pipe to achieve circulating cooling of the server.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. The server auxiliary rack liquid cooling device and method with a leak-proof sealing structure integrates multiple liquid cooling connection modules onto a unified mobile rack. A linkage locking system is formed by a push plate, limiter, and pin. A linear action of pulling the push plate can synchronously drive the precise insertion, mechanical limit, and final position locking of all liquid cooling plugs. This enables rapid batch docking and disconnection of server liquid cooling circuits, improves the efficiency of server deployment, replacement, or maintenance in data centers, ensures the consistency of multiple connections, and optimizes the maintainability of the liquid cooling system overall.

[0034] 2. The server auxiliary rack liquid cooling device and method with a leak-proof sealing structure, when the liquid cooling plug is inserted, pushes the moving valve to move axially, and through the cooperation of the ball and the spiral guide groove, forces the rotating tube to rotate, ensuring that the liquid passage groove on the rotating tube is aligned and connected with the liquid passage hole on the liquid passage plate in the final stage of the docking process. This achieves the timing control of mechanical alignment and sealing first, and then opening the flow channel, thereby eliminating the risk of refrigerant splashing or leaking from the interface at the moment of connection and disconnection. This not only protects the equipment safety, but also enables safe plugging and unplugging operations while the system is running, improving maintenance convenience and system reliability. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the mobile frame in this invention;

[0037] Figure 3 This is one of the partial structural diagrams of the mobile rack in this invention;

[0038] Figure 4This is a second schematic diagram of a portion of the structure of the mobile rack in this invention;

[0039] Figure 5 This is a cross-sectional schematic diagram of the limiter structure in this invention;

[0040] Figure 6 This is a structural breakdown diagram of the liquid-cooled connection module in this invention;

[0041] Figure 7 This is one of the cross-sectional schematic diagrams of the liquid cooling joint in this invention;

[0042] Figure 8 This is the second sectional view of the liquid cooling connector in this invention;

[0043] Figure 9 This is a cross-sectional schematic diagram of the outer sleeve in this invention;

[0044] Figure 10 This is a partial cross-sectional schematic diagram of the liquid cooling connector in this invention;

[0045] Figure 11 This is one of the partial structural schematic diagrams of the liquid cooling connector in this invention;

[0046] Figure 12 This is a second schematic diagram of a partial structure of the liquid cooling connector in this invention;

[0047] Figure 13 This is a cross-sectional schematic diagram of the liquid-cooled plug in this invention;

[0048] Figure 14 This is a partial sectional side view of the liquid-cooled connection module in this invention;

[0049] Explanation of reference numerals in the attached figures:

[0050] 100. Moving frame; 110. Diverter box; 111. Outward protrusion interface; 120. Moving frame; 130. Push plate; 131. Socket; 140. Insertion block; 150. Limiter; 151. Collar; 1510. Through hole; 152. Limiting rod; 153. First spring; 160. Horizontal rail; 170. Pin; 180. Slide rod; 190. Second spring;

[0051] 200. Liquid-cooled connection module; 210. Liquid-cooled connector; 211. Outer sleeve; 212. Moving valve; 2120. Fixing ring; 213. Rotating tube; 2130. Guide groove; 2131. Liquid passage groove; 214. Ball bearing; 215. Third spring; 216. Sealing plug; 217. Sealing ring; 218. Liquid passage plate; 2180. Liquid passage hole; 219. Water passage bolt; 220. Liquid-cooled plug; 221. Insert tube; 222. Moving plug; 223. Fourth spring; 224. Water passage valve; 225. Threaded tube; 226. Rubber ring; 230. Connecting tube; 240. Liquid passage pipe. Detailed Implementation

[0052] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0053] Please see Figures 1-5 As shown, this embodiment provides the following technical solution:

[0054] A server auxiliary rack liquid cooling device with a leak-proof and sealed structure includes a mobile rack 100, which has several liquid cooling connection modules 200 arranged side by side inside.

[0055] Specifically, the mobile frame 100 includes a distribution box 110, a moving frame 120 parallel to the left side of the distribution box 110, a push plate 130 disposed on the outside of the moving frame 120, several sets of inserts 140 disposed on the outer wall of the push plate 130 near the end of the moving frame 120, and several limiters 150 disposed inside the moving frame 120 for fixing the internal structure of the liquid cooling connection module 200. The mobile frame 100 also includes a horizontal rail 160 with a longitudinal cross section of U-shaped, which is bolted to the outer walls of the upper and lower ends of the distribution box 110; a pin 170 sliding inside the horizontal rail 160; several slide rods 180 bolted to the outer wall of the distribution box 110; and a second spring 190 sleeved on the outside of the slide rods 180.

[0056] Furthermore, several protruding interfaces 111 are welded and fixed on the outer wall of the distribution box 110. Several circular holes are opened on the outer walls of the moving frame 120 and the push plate 130 for the liquid cooling connection module 200 to pass through. Insertion holes 131 are opened on the outer walls of the upper and lower ends of the push plate 130. The insertion block 140 is snapped and fixed on the outer wall of the push plate 130 and its end extends into the interior of the moving frame 120.

[0057] Furthermore, the limiter 150 includes a collar 151 that is snapped and fixed inside the circular hole on the outer wall of the movable frame 120, two limit rods 152 that are slidably connected to the protrusions at both ends of the outer wall of the collar 151, and a first spring 153 that is sleeved on the outside of the limit rods 152. The collar 151 has through holes 1510 in the protrusions at both ends of the outer wall for the limit rods 152 to slide and communicate with their inner walls. The limit rods 152 have an annular baffle integrally formed on them for the first spring 153 to apply force. The end of the limit rods 152 is hemispherical and extends to the outside of the protrusions at both ends of the outer wall of the collar 151.

[0058] Furthermore, the movable frame 120 and the push plate 130 are slidably connected to the inner side of the upper and lower horizontal rails 160, the end of the slide rod 180 extends to the outer wall of the push plate 130, and the two ends of the second spring 190 abut against the outer walls of the diversion box 110 and the movable frame 120, respectively.

[0059] Furthermore, the operator pulls the push plate 130 towards the moving frame 120, causing the end of the insert block 140 on the push plate 130 to press against the limiting rod 152 in the limiter 150; the limiting rod 152 retracts inward against the elastic force of the first spring 153, and its inner end passes through the through hole 1510 on the collar 151, thereby clamping and fixing the internal structure of the liquid-cooled connection module 200, realizing the mechanical locking of the connection components in the liquid-cooled connection module 200. Subsequently, the push plate 130 is pulled again, causing the moving frame 120 to move towards the diversion box 110 against the elastic force of the second spring 190, so that the pin 170 passes through the horizontal rail 160 and is inserted into the insertion hole 131 of the push plate 130, thereby realizing the position locking of the entire moving frame 100 in the docking state.

[0060] The above setup integrates multiple independent liquid cooling connection operations into a unified linear action through the integrated mobile rack 100 and linkage locking mechanism, realizing rapid and accurate batch docking and mechanical locking of server liquid cooling circuits, greatly improving deployment and maintenance efficiency, and ensuring the consistency of multi-way connections.

[0061] Please see Figures 6-12 As shown, in this embodiment, the liquid cooling connection module 200 includes a liquid cooling connector 210, a liquid cooling plug 220, a connecting pipe 230, and a liquid passage pipe 240 arranged sequentially from left to right.

[0062] Specifically, the liquid cooling connector 210 includes an outer sleeve 211, a movable valve 212 sliding inside the outer sleeve 211, a rotating tube 213 sleeved inside the movable valve 212, several balls 214 snapped onto the inner wall of the outer sleeve 211, a third spring 215 sleeved outside the movable valve 212, a sealing plug 216 located at the axis of the rotating tube 213, and a liquid-passing plate 218 abutting against the left end of the rotating tube 213. When the third spring 215 is in its natural state, the end of the sealing plug 216 is flush with the end of the movable valve 212. Several regularly distributed guide grooves 2130 are provided on the wall of the rotating tube 213, three liquid-passing grooves 2131 are provided on the left end face of the rotating tube 213, and liquid-passing holes 2180 are provided on the liquid-passing plate 218, which are staggered with the three liquid-passing grooves 2131.

[0063] Furthermore, the outer sleeve 211 is threaded to the inner side of the protruding interface 111. The right end of the outer sleeve 211 is funnel-shaped and its inner wall is integrally formed with an inward concave structure for limiting the position of the moving valve 212. The moving valve 212 slides inside the outer sleeve 211. A fixing ring 2120 for limiting the position of the ball 214 is snapped into the left end of the moving valve 212. The rotating tube 213 is rotatably connected to the inner wall of the outer sleeve 211. The left and right ends of the third spring 215 abut against the inner protruding ring of the inner wall of the outer sleeve 211 and the outer protruding ring of the moving valve 212, respectively. The central axis of the sealing plug 216 is welded and fixed to the center of the inner wall of the rotating tube 213.

[0064] Furthermore, sealing rings 217 are placed in the annular groove of the concave structure on the inner wall of the outer sleeve 211 and the annular groove at the end of the sealing plug 216. The liquid-passing plate 218 is inserted into the convex ring on the inner wall of the outer sleeve 211. A water-passing bolt 219 with a central hole is threaded into the left side opening of the outer sleeve 211.

[0065] Furthermore, the liquid cooling connectors 210 in several sets of liquid cooling connection modules 200 can be threaded onto the protruding interface 111 on the outer wall of the distribution box 110 of the mobile rack 100 via their outer sleeves 211; simultaneously, the liquid cooling plugs 220 are sequentially connected to the connecting pipes 230 and the liquid flow pipes 240 to assemble them into independent connection components. The ends of each liquid flow pipe 240 are connected to the liquid cooling plate interface inside the server, thereby completing the physical connection preparation between the server and the liquid cooling circuit.

[0066] Furthermore, after the liquid cooling plug 220 is inserted into the outer tube 211, it drives the moving valve 212 to overcome the elastic force of the third spring 215 and move to the left. As the insertion action continues, the ball 214 fixed to the inner wall of the moving valve 212 enters the spiral section from the straight section of the guide groove 2130 on the rotating tube 213. The ball 214 moves along the spiral section trajectory, driving the rotating tube 213 to rotate at a certain angle relative to the outer tube 211. When the rotating tube 213 rotates to the set position, the liquid passage groove 2131 on the end face of the rotating tube 213 is completely aligned and connected with the liquid passage hole 2180 on the liquid passage plate 218, thus completely opening the final flow channel of the liquid cooling circuit.

[0067] The above setup, through the mechanical linkage design of the movable valve 212 and the rotating tube 213, forces the rotating tube 213 to rotate, thereby achieving precise timing control of the flow channel connection action after mechanical docking and sealing are completed. This fundamentally eliminates liquid leakage at the moment of insertion and removal, ensuring the feasibility of safe hot-plugging under energized and liquid conditions.

[0068] Please see Figures 13-14 As shown, in this embodiment, the liquid cooling plug 220 includes a tube 221, a movable plug 222 that slides inside the tube 221, a water valve 224 that is snapped and fixed at the right end of the tube 221, a fourth spring 223 placed between the movable plug 222 and the water valve 224, a threaded tube 225 that is sleeved on the right end of the tube 221, and a rubber ring 226 placed between the tube 221 and the threaded tube 225.

[0069] Specifically, the elastic force provided by the fourth spring 223 pushes the movable plug 222 to the left. The end of the movable plug 222 is flush with the left opening of the insertion tube 221. The inner side of the threaded tube 225 is threaded with a connecting tube 230. The right end of the connecting tube 230 is threaded with a liquid passage tube 240 for supplying refrigerant.

[0070] Furthermore, during the process of inserting the liquid cooling plug 220 into the liquid cooling connector 210, the end of the insertion tube 221 of the liquid cooling plug 220 pushes the movable valve 212 inside the liquid cooling connector 210, causing it to move to the left against the elastic force of the third spring 215; at the same time, the sealing plug 216 inside the movable valve 212 synchronously presses against the movable plug 222 inside the liquid cooling plug 220, causing the movable plug 222 to move to the right against the elastic force of the fourth spring 223; through the synchronous axial displacement of the valve cores on both sides, the front flow channel space inside the movable valve 212 and the central flow channel space inside the insertion tube 221 are interconnected, forming a preliminary channel for the refrigerant to flow.

[0071] The above setup, through the combination of the movable plug 222 and the water valve 224, enables precise interaction and synchronous displacement with the movable valve 212 and the sealing plug 216 inside the liquid-cooled connector 210 during insertion. This establishes a controllable and sealed preliminary connection space before the final flow channel is opened, providing a core guarantee for leak-free flow channel switching.

[0072] The liquid cooling method for server auxiliary racks with a leak-proof sealing structure of the present invention includes the following steps:

[0073] S1. First, the operator connects the liquid cooling connectors 210 in several sets of liquid cooling connection modules 200 to the protruding interface 111 on the outer wall of the distribution box 110 of the mobile rack 100 through their outer sleeves 211. At the same time, the liquid cooling plugs 220 are connected to the connecting pipes 230 and the liquid flow pipes 240 in sequence to assemble them into independent connection components. Then, the ends of each liquid flow pipe 240 are connected to the liquid cooling plate interface in the server, thereby completing the physical connection preparation between the server and the liquid cooling circuit.

[0074] S2. Next, the assembled connecting components are passed through the corresponding round holes on the moving frame 120 and the push plate 130 in sequence. During this process, the connecting nut at the end of the liquid pipe 240 is blocked by the annular convex ring on the inner side of the collar 151 in the limiter 150, thus achieving initial positioning.

[0075] S3. After all connecting components are in place, the operator pulls the push plate 130 towards the moving frame 120, causing the end of the insert block 140 on the push plate 130 to press against the limiting rod 152 in the limiter 150; the limiting rod 152 retracts inward against the elastic force of the first spring 153, and its inner end passes through the through hole 1510 on the collar 151, thereby clamping and fixing the nut at the end of the liquid pipe 240, realizing the mechanical locking of the connecting components;

[0076] S4. Then, continue to pull the push plate 130, which will drive the moving frame 120 to move towards the distribution box 110 against the elastic force of the second spring 190 until all liquid cooling plugs 220 are fully inserted into the corresponding liquid cooling connectors 210. At this time, the pin 170 is passed through the horizontal rail 160 and inserted into the insertion hole 131 of the push plate 130 to lock the position of the entire moving frame 100 in the docking state.

[0077] S5. During the process of inserting the liquid cooling plug 220 into the liquid cooling connector 210, the end of the insertion tube 221 of the liquid cooling plug 220 pushes the movable valve 212 inside the liquid cooling connector 210, causing it to move to the left against the elastic force of the third spring 215; at the same time, the sealing plug 216 inside the movable valve 212 synchronously presses against the movable plug 222 inside the liquid cooling plug 220, causing the movable plug 222 to move to the right against the elastic force of the fourth spring 223; through the synchronous axial displacement of the valve cores on both sides, the front flow channel space inside the movable valve 212 and the central flow channel space inside the insertion tube 221 are interconnected, forming a preliminary channel for the refrigerant to flow;

[0078] S6. As the insertion action continues, the ball bearing 214 fixed to the inner wall of the moving valve 212 enters the spiral section through the straight section of the guide groove 2130 on the rotating tube 213; the ball bearing 214 moves along the trajectory of the spiral section, driving the rotating tube 213 to rotate at a certain angle relative to the outer tube 211; when the rotating tube 213 rotates to the set position, the liquid passage groove 2131 on the end face of the rotating tube 213 is completely aligned and connected with the liquid passage hole 2180 on the liquid passage plate 218; at this point, the final flow channel of the liquid cooling circuit is completely opened.

[0079] S7. After completing the above docking and locking, start the external cooling circulation system. The refrigerant is input into the distribution box 110 through the main pipe. The refrigerant is distributed to each liquid cooling connector 210 in the distribution box 110, and then passes through the connected liquid passage 2180, liquid passage 2131, the common flow channel opened by the moving valve 212 and the moving plug 222, the insertion tube 221, the connecting tube 230, and finally delivered to the liquid cooling plate in the server through the liquid passage 240 to achieve circulating cooling of the server.

[0080] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A server auxiliary rack liquid cooling device with a leak-proof sealing structure, characterized in that: It includes a mobile rack, which contains several liquid-cooled connection modules arranged side by side. The liquid cooling connection module includes, from left to right, a liquid cooling connector, a liquid cooling plug, a connecting pipe, and a liquid passage pipe; The liquid cooling connector includes an outer tube, a movable valve sliding inside the outer tube, a rotating tube sleeved inside the movable valve, several balls snapped onto the inner wall of the outer tube, a third spring sleeved outside the movable valve, a sealing plug located at the axis of the rotating tube, and a liquid-passing plate that abuts against the left end of the rotating tube. When the third spring is in its natural state, the end of the sealing plug is flush with the end of the moving valve. Several regularly distributed guide grooves are provided on the wall of the rotating tube, and three liquid passage grooves are provided on the left end face of the rotating tube. Liquid passage holes are provided on the liquid passage plate, which are distributed alternately with the three liquid passage grooves. After the liquid cooling plug is inserted into the outer tube, it drives the moving valve to overcome the elastic force of the third spring and move to the left, causing the ball to move along the guide groove trajectory, driving the rotating tube to rotate at a fixed distance, so that the liquid passage groove and the liquid passage hole are connected.

2. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 1, characterized in that: The mobile frame includes a distribution box, a mobile frame parallel to the left side of the distribution box, a push plate disposed on the outside of the mobile frame, several sets of inserts disposed on the outer wall of the push plate near one end of the mobile frame, and several limiters disposed inside the mobile frame for fixing the internal structure of the liquid cooling connection module.

3. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 2, characterized in that: The outer wall of the distribution box is welded and fixed with several protruding interfaces. The outer walls of the moving frame and the push plate are provided with several through holes for the liquid cooling connection module to pass through. The outer walls of the upper and lower ends of the push plate are provided with insertion holes. The insertion block is snapped and fixed on the outer wall of the push plate and its end extends into the interior of the moving frame.

4. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 3, characterized in that: The limiter includes a collar that is snapped and fixed inside the circular hole on the outer wall of the movable frame, two limit rods that are slidably connected to the protrusions at both ends of the outer wall of the collar, and a first spring sleeved on the outside of the limit rods. The collar has through holes in the protrusions at both ends of the outer wall for the limit rods to slide and communicate with their inner walls. The limit rods have an annular baffle integrally formed on them for the first spring to apply force. The ends of the limit rods are hemispherical and extend to the outside of the protrusions at both ends of the outer wall of the collar.

5. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 4, characterized in that: The mobile frame also includes horizontal rails with a longitudinal cross-section in the shape of a U-shape, which are fixed to the outer walls of the upper and lower ends of the diversion box by bolts; pins that slide inside the horizontal rails; several sliding rods that are fixed to the outer walls of the diversion box by bolts; and a second spring sleeved on the outside of the sliding rods. The moving frame and the push plate are both slidably connected to the inner sides of the upper and lower horizontal rails. The ends of the sliding rods extend to the outer walls of the push plate, and the two ends of the second spring abut against the outer walls of the diversion box and the moving frame, respectively.

6. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 5, characterized in that: The outer sleeve is threaded to the inside of the protruding interface. The right end of the outer sleeve is funnel-shaped and has an integrally formed concave structure on its inner wall to limit the position of the moving valve. The moving valve slides inside the outer sleeve. A fixing ring for limiting the position of the ball is snapped into the left end of the moving valve. The rotating tube is rotatably connected to the inner wall of the outer sleeve. The left and right ends of the third spring respectively abut against the inner protruding ring of the inner wall of the outer sleeve and the outer protruding ring of the moving valve. The central axis of the sealing plug is welded and fixed to the center of the inner wall of the rotating tube.

7. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 6, characterized in that: The annular groove on the inner wall of the outer sleeve and the annular groove at the end of the sealing plug are both fitted with sealing rings. The liquid-passing plate is inserted into the convex ring on the inner wall of the outer sleeve. A water-passing bolt with a central hole is threaded into the left side opening of the outer sleeve.

8. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 7, characterized in that: The liquid cooling plug includes a tube, a movable plug that slides inside the tube, a water valve that is snapped and fixed at the right end of the tube, a fourth spring placed between the movable plug and the water valve, a threaded tube sleeved outside the right end of the tube, and a rubber ring placed between the tube and the threaded tube.

9. The server auxiliary rack liquid cooling device with a leak-proof sealing structure according to claim 8, characterized in that: The elastic force provided by the fourth spring pushes the movable plug to the left. The end of the movable plug is flush with the left side opening of the insertion tube. The inner side of the threaded tube is connected to a connecting tube, and the right end of the connecting tube is threaded to a liquid-passing tube for refrigerant flow.

10. A server auxiliary rack liquid cooling method with a leak-proof sealing structure, using the server auxiliary rack liquid cooling device with a leak-proof sealing structure as described in claim 9, characterized in that... Includes the following steps: S1. First, the operator connects the liquid cooling connectors in several sets of liquid cooling connection modules to the protruding interface on the outer wall of the distribution box of the mobile rack through the threaded outer sleeve; at the same time, the liquid cooling plug is connected to the connecting pipe and the liquid passage pipe in sequence to assemble an independent connection component; then, the end of each liquid passage pipe is connected to the liquid cooling plate interface in the server to complete the physical connection preparation between the server and the liquid cooling circuit. S2. Next, the assembled connecting components are passed through the corresponding round holes in the moving frame and the push plate in sequence; during this process, the connecting nut at the end of the liquid inlet tube is blocked by the annular convex ring on the inner side of the collar in the limiter, thus achieving initial positioning; S3. After all connecting components are in place, the operator pulls the push plate towards the moving frame, causing the end of the insert on the push plate to press against the limit rod in the limiter; the limit rod overcomes the elastic force of the first spring and retracts inward, and its inner end passes through the through hole on the collar, thereby clamping and fixing the nut at the end of the liquid pipe, realizing the mechanical locking of the connecting components. S4. Then, continue to pull the push plate to move the moving frame against the elastic force of the second spring towards the distribution box until all liquid cooling plugs are fully inserted into the corresponding liquid cooling connectors. At this time, pass the pin through the horizontal rail and insert it into the socket of the push plate to lock the entire moving frame in the docking state. S5. During the process of inserting the liquid cooling plug into the liquid cooling connector, the insertion end of the liquid cooling plug pushes the movable valve inside the liquid cooling connector, causing it to move to the left against the elastic force of the third spring; at the same time, the sealing plug inside the movable valve synchronously presses against the movable plug inside the liquid cooling plug, causing the movable plug to move to the right against the elastic force of the fourth spring; through the synchronous axial displacement of the valve cores on both sides, the front flow channel space inside the movable valve and the central flow channel space inside the insertion tube are interconnected, forming a preliminary channel for the refrigerant to flow. S6. As the insertion action continues, the ball fixed to the inner wall of the moving valve enters the spiral section from the straight section of the guide groove on the rotating tube; the ball moves along the trajectory of the spiral section, driving the rotating tube to rotate at a certain angle relative to the outer tube; when the rotating tube rotates to the set position, the liquid passage groove on the end face of the rotating tube is completely aligned with and connected to the liquid passage hole on the liquid passage plate; at this point, the final flow channel of the liquid cooling circuit is completely opened. S7. After completing the above docking and locking, start the external cooling circulation system. The refrigerant is input into the distribution box through the main pipe. The refrigerant is distributed to each liquid cooling connector in the distribution box. It passes through the connected liquid passage, liquid passage tank, common flow channel opened by the moving valve and moving plug, insertion pipe, and connecting pipe in sequence. Finally, it is transported to the liquid cooling plate in the server through the liquid passage pipe to achieve circulating cooling of the server.

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