Liquid cooling system

Abstract

The utility model discloses a liquid cooling system which comprises a liquid cooling plate with a built-in liquid cooling loop and a liquid supply loop, and the liquid supply loop is connected with the liquid cooling loop of the liquid cooling plate through a liquid cooling connector. The lower end of the female head sleeve is connected with the liquid inlet end of a liquid cooling loop on the liquid cooling plate, the supporting rod is arranged in the female head sleeve in the axial direction, the upper end of the female head sleeve is connected with a liquid supply loop, and when the male head sleeve is downwards embedded into the female head sleeve in the axial direction, the liquid supply loop is communicated with the liquid cooling loop of the liquid cooling plate. According to the utility model, the respective flow channels of the liquid supply loop and the liquid cooling loop can be sealed after the male head and the female head are separated, and the male head and the female head are separated by successively pressing the telescopic part and the rotating part which are asymmetrically arranged on the two sides of the female head sleeve, so that mistaken touch can be effectively avoided, and the safety and the stability in the use process are improved; and during the first pressing, partial force applied to the male head and the female head during separation can be released in advance, so that the male head and the female head can be stably separated.

Description

Technical Field

[0001] This utility model relates to a liquid cooling system and belongs to the field of liquid cooling heat dissipation technology. Background Technology

[0002] Data center servers generate a significant amount of heat during operation, requiring cooling to ensure proper functioning. The server's liquid cooling circuit is connected to the cabinet's distributor via quick-connect couplings or other types of connectors, allowing for heat exchange between the server's liquid cooling circuit and the distributor's circuit. However, existing liquid cooling systems, while establishing continuity between the supply and cooling circuits after connector insertion, struggle to seal the individual flow channels of each circuit when the connectors are separated. This can lead to accidental contact on one side, causing the connectors to loosen. Utility Model Content

[0003] The purpose of this invention is to provide a liquid cooling system that, after the male and female connectors are plugged in, enables the liquid supply circuit and the liquid cooling circuit to be connected, effectively preventing accidental contact that could cause the male and female connectors to loosen, thus improving safety and stability during use.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a liquid cooling system, comprising: a liquid cooling plate with a built-in liquid cooling circuit and a liquid supply circuit, wherein the liquid cooling plate is disposed on the surface of the heating element of the server, and the liquid supply circuit is connected to the liquid cooling circuit of the liquid cooling plate through a liquid cooling connector, wherein the liquid cooling connector comprises: a female sleeve whose lower end is connected to the liquid inlet end of the liquid cooling circuit on the liquid cooling plate, a support rod disposed axially in the female sleeve, and a female sleeve whose upper end is connected to the liquid supply circuit; when the male sleeve is axially inserted downward into the female sleeve, the liquid supply circuit is connected to the liquid cooling circuit of the liquid cooling plate.

[0005] The upper end of the support rod, which has a support plate mounted at its lower end, has a radially outward flange. The inner wall of the upper part of the female sleeve has a first radially inward flange. A floating ring that mates with the lower end face of the male sleeve is sealed between the first inner flange, whose side wall is flush with the outer surface of the male sleeve, and the flange of the support rod. A female spring is provided between the axially movable floating ring and the support plate. A stop ring, a male spring, and a floating block that mates with the upper end face of the support rod are sequentially arranged axially inside the male sleeve. The inner wall of the lower end of the male sleeve, where the stop ring is fixedly mounted at its upper end, has a radially inward flange. The second inner flange has a sidewall that is sealed to a floating block that can move axially. The outer sidewall of the male sleeve has a protrusion that extends radially outward. The lower end face of the protrusion is a first inclined surface that extends radially outward at the upper end. The female sleeve has a retaining ring that can move radially, located above the first inner flange. One side of the retaining ring has a pressing part. A first spring that extends horizontally is provided between the pressing part located on the outside of the female sleeve and the female sleeve. The inner wall of the other side of the retaining ring has a locking part that extends radially into the female sleeve. The upper end face of the locking part is a second inclined surface.

[0006] One end of a movable block that can move in the same direction as the retaining ring is embedded in the retaining ring's engaging part and is provided with a third inclined surface. The third inclined surface is parallel to the second inclined surface, and the third inclined surface can move with the movable block to be flush with the second inclined surface. A groove is formed on the lower surface of the other end of the movable block. The upper end of a rotating block that is rotatably mounted on the female sleeve is embedded in the groove. A horizontally extending second spring is connected between the lower end of the rotating block and the female sleeve. A stop groove is formed on the lower surface of the retaining ring's engaging part or the movable block extending into the female sleeve. When the movable block or the retaining ring's engaging part is withdrawn radially from inside the female sleeve, the bottom surface of the stop groove is pressed into contact with the upper end surface of the protrusion on the male sleeve.

[0007] The following are further improvements to the above technical solution:

[0008] 1. In the above scheme, a connecting pipe is provided at the lower end of the female head sleeve. The upper end of the connecting pipe is fitted onto the outside of the female head sleeve and is sealed to the outer wall of the female head sleeve. The lower end of the connecting pipe is installed on the liquid cooling plate and is connected to the liquid cooling circuit.

[0009] 2. In the above scheme, the upper end face of the first inner flange is set as an inclined surface and is parallel to the first inclined surface.

[0010] 3. In the above scheme, the support plate is disposed between the lower end of the support rod and the inner wall of the female head sleeve.

[0011] 4. In the above scheme, the support plate is provided with a number of spaced through holes.

[0012] 5. In the above scheme, the protrusion extends along the entire circumference of the outer side wall of the male sleeve.

[0013] 6. In the above scheme, the upper end surface of the floating block has a limiting part that extends axially upward and slides in contact with the inner wall of the male sleeve.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] This utility model relates to a liquid cooling system where the liquid supply circuit and the liquid cooling circuit of the liquid cooling plate are connected via a liquid cooling connector. When the male sleeve, located on the outer side of the upper end of the female sleeve of the liquid cooling connector, is axially inserted downward into the female sleeve, the liquid supply circuit and the liquid cooling circuit of the liquid cooling plate are connected. A radially outwardly extending protrusion is provided on the outer wall of the male sleeve of the liquid cooling connector. The lower end face of this protrusion is configured as a first radially outwardly inclined surface at its upper end. A radially movable retaining ring is installed on the female sleeve above the first inner flange. One side of the retaining ring has a pressing part. A horizontally extending first spring is provided between the pressing part located on the outer side of the female sleeve and the female sleeve. A radially extending snap-fit ​​part is formed on the inner wall of the other side of the retaining ring, extending into the female sleeve. The upper end face of this snap-fit ​​part is configured as a second inclined surface. One end of a movable block that can move in the same direction as the retaining ring is inserted into the snap-fit ​​part of the retaining ring and is provided with a third inclined surface. The third inclined surface and the first... Both inclined planes are parallel to the second inclined plane, and the third inclined plane can move with the movable block to be flush with the second inclined plane. A stop groove is opened on the lower surface of the snap ring or the movable block extending into the female sleeve. When the movable block or the snap ring is pulled out radially from the inside of the female sleeve, the bottom surface of the stop groove is pressed into contact with the upper end surface of the protrusion on the male sleeve. After the male and female heads are connected, the liquid supply circuit and the liquid cooling circuit can be connected. After the male and female heads are separated, the flow channels of the liquid supply circuit and the liquid cooling circuit can be sealed. It also facilitates the mutual insertion and separation of the male and female heads. The separation of the male and female heads is achieved by pressing the telescopic and rotating parts that are asymmetrically set on both sides of the female sleeve. This can effectively avoid the situation of loosening between the male and female heads due to accidental contact, improve the safety and stability during use, and release part of the force on the male and female heads during separation in advance when pressing for the first time, so as to achieve stable separation between the male and female heads. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the liquid cooling system of this utility model;

[0017] Appendix Figure 2 This is a schematic diagram of the structure of the liquid cooling connector in the liquid cooling system of this utility model;

[0018] Appendix Figure 3 This is a cross-sectional view of the liquid cooling connector in one state of the liquid cooling system of this utility model;

[0019] Appendix Figure 4 This is a cross-sectional view of the liquid cooling connector in another state of the liquid cooling system of this utility model;

[0020] Appendix Figure 5 This is a partial enlarged cross-sectional view of the liquid cooling connector in the liquid cooling system of this utility model;

[0021] Appendix Figure 6 This is a partial structural cross-sectional view of the liquid cooling connector in the liquid cooling system of this utility model.

[0022] In the attached diagrams: 100, liquid cooling plate; 200, liquid supply circuit; 1, female sleeve; 2, support rod; 3, male sleeve; 4, connecting pipe; 5, flange; 6, support plate; 61, through hole; 7, first inner flange; 8, floating ring; 81, guide part; 9, female spring; 10, first sealing ring; 11, second sealing ring; 12, stop ring; 13, male spring; 14, floating block; 141, limiting part; 15. Second inner flange; 16. Third sealing ring; 17. Protrusion; 181. First inclined surface; 182. Second inclined surface; 183. Third inclined surface; 19. Snap ring; 191. Pressing part; 192. Snap-fit ​​part; 20. Movable block; 211. First spring; 212. Second spring; 22. Groove; 23. Rotating block; 24. Pin; 251. Guide protrusion; 252. Guide groove; 26. Stop groove. Detailed Implementation

[0023] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0024] Example 1: A liquid cooling system includes: a liquid cooling plate 100 with a built-in liquid cooling circuit and a liquid supply circuit 200. The liquid cooling plate 100 is disposed on the surface of the heat-generating element of a server. The liquid supply circuit 200 is connected to the liquid cooling circuit of the liquid cooling plate 100 through a liquid cooling connector. The liquid cooling connector includes: a female sleeve 1 whose lower end is connected to the liquid inlet end of the liquid cooling circuit on the liquid cooling plate 100, a support rod 2 disposed axially in the female sleeve 1, and a female sleeve 1 whose upper end is connected to the liquid supply circuit 200. When the male sleeve 3 is inserted axially downward into the female sleeve 1, the liquid supply circuit 200 is connected to the liquid cooling circuit of the liquid cooling plate 100.

[0025] The upper end of the support rod 2, which has a support plate 6 installed at its lower end, has a radially outward flange 5. The inner wall of the upper part of the female sleeve 1 has a radially inward first inner flange 7. A floating ring 8, which mates with the lower end face of the male sleeve 3, is sealed between the first inner flange 7 (whose side wall is flush with the outer side of the male sleeve 3) and the flange 5 of the support rod 2. A female spring 9 is installed between the axially movable floating ring 8 and the support plate 6. A stop ring 12, a male spring 13, and a floating block 14 mates with the upper end face of the support rod 2 are sequentially arranged axially inside the male sleeve 3. The inner wall of the lower end of the male sleeve 3, where the stop ring 12 is fixedly installed at its upper end, has a radially inward second inner flange 15. The sidewall of the second inner flange 15 is sealed to the floating block 14 which can move axially. A protrusion 17 extending radially outward is provided on the outer sidewall of the male sleeve 3. The lower end face of the protrusion 17 is configured as a first inclined surface 181 extending radially outward at the upper end. A retaining ring 19 that can move radially is installed on the female sleeve 1 and above the first inner flange 7. One side of the retaining ring 19 has a pressing part 191. A horizontally extending first spring 211 is provided between the pressing part 191 located outside the female sleeve 1 and the female sleeve 1. A locking part 192 extending radially into the female sleeve 1 is formed on the inner wall of the other side of the retaining ring 19. The upper end face of the locking part 192 is configured as a second inclined surface 182.

[0026] One end of a movable block 20 that can move in the same direction as the retaining ring 19 is embedded in the retaining part 192 of the retaining ring 19 and is provided with a third inclined surface 183. The third inclined surface 183 and the second inclined surface 182 are both parallel to the second inclined surface 182, and the third inclined surface 183 can move with the movable block 20 to be flush with the second inclined surface 182. A groove 22 is formed on the lower surface of the other end of the movable block 20, and the upper end of a rotating block 23 that is rotatably mounted on the female sleeve 1 is embedded in the groove 22. Inside the groove 20, a horizontally extending second spring 212 is connected between the lower end of the rotating block 21 and the female sleeve 1. A stop groove 26 is formed on the lower surface of the retaining ring 19's snap-fit ​​part 192 or the movable block 20 extending to one end of the female sleeve 1. When the movable block 20 or the snap-fit ​​part 192 of the retaining ring 19 is withdrawn radially from the inside of the female sleeve 1, the bottom surface of the stop groove 26 is pressed into contact with the upper end surface of the protrusion 17 on the male sleeve 3.

[0027] When the liquid cooling system starts working, the male sleeve of the liquid cooling connector inserts axially downwards into the female sleeve, enabling the liquid supply circuit and the liquid cooling circuit to conduct after the male and female connectors are connected. When finished, press the asymmetrical telescopic and rotating parts on both sides of the female sleeve to separate the male and female connectors, thus sealing the flow channels of the liquid supply circuit and the liquid cooling circuit.

[0028] The lower end of the aforementioned female sleeve 1 is provided with a connecting pipe 4. The upper end of the connecting pipe 4 is fitted onto the outside of the female sleeve 1 and is sealed to the outer wall of the female sleeve 1. The lower end of the connecting pipe 4 is installed on the liquid cooling plate 100 and is connected to the liquid cooling circuit.

[0029] The upper end face of the first inner flange 7 is set as an inclined surface and is parallel to the first inclined surface 181.

[0030] The aforementioned support plate 6 is located between the lower end of the support rod 2 and the inner wall of the female sleeve 1.

[0031] The aforementioned protrusion 17 extends along the entire circumference of the outer side wall of the male sleeve 3.

[0032] The floating ring 8 has a guide portion 81 extending axially downward on its lower end surface and outside the female head spring 9. This guide portion 81 slides in contact with the inner wall of the female head sleeve 1.

[0033] The aforementioned rotating block 21 is rotatably mounted on the side wall of the female sleeve 1 via a pin 24. The aforementioned movable block 20 and the snap ring 192 are slidably engaged by at least one set of guide protrusions 251 and guide grooves 252.

[0034] Example 2: A liquid cooling system includes: a liquid cooling plate 100 with a built-in liquid cooling circuit and a liquid supply circuit 200. The liquid cooling plate 100 is disposed on the surface of the heat-generating element of a server. The liquid supply circuit 200 is connected to the liquid cooling circuit of the liquid cooling plate 100 through a liquid cooling connector. The liquid cooling connector includes: a female sleeve 1 whose lower end is connected to the liquid inlet end of the liquid cooling circuit on the liquid cooling plate 100, a support rod 2 disposed axially in the female sleeve 1, and a female sleeve 1 whose upper end is connected to the liquid supply circuit 200. When the male sleeve 3 is inserted axially downward into the female sleeve 1, the liquid supply circuit 200 is connected to the liquid cooling circuit of the liquid cooling plate 100.

[0035] The upper end of the support rod 2, which has a support plate 6 installed at its lower end, has a radially outward flange 5. The inner wall of the upper part of the female sleeve 1 has a radially inward first inner flange 7. A floating ring 8, which mates with the lower end face of the male sleeve 3, is sealed between the first inner flange 7 (whose side wall is flush with the outer side of the male sleeve 3) and the flange 5 of the support rod 2. A female spring 9 is installed between the axially movable floating ring 8 and the support plate 6. A stop ring 12, a male spring 13, and a floating block 14 mates with the upper end face of the support rod 2 are sequentially arranged axially inside the male sleeve 3. The inner wall of the lower end of the male sleeve 3, where the stop ring 12 is fixedly installed at its upper end, has a radially inward second inner flange 15. The sidewall of the second inner flange 15 is sealed to the floating block 14 which can move axially. A protrusion 17 extending radially outward is provided on the outer sidewall of the male sleeve 3. The lower end face of the protrusion 17 is configured as a first inclined surface 181 extending radially outward at the upper end. A retaining ring 19 that can move radially is installed on the female sleeve 1 and above the first inner flange 7. One side of the retaining ring 19 has a pressing part 191. A horizontally extending first spring 211 is provided between the pressing part 191 located outside the female sleeve 1 and the female sleeve 1. A locking part 192 extending radially into the female sleeve 1 is formed on the inner wall of the other side of the retaining ring 19. The upper end face of the locking part 192 is configured as a second inclined surface 182.

[0036] One end of a movable block 20 that can move in the same direction as the retaining ring 19 is embedded in the retaining part 192 of the retaining ring 19 and is provided with a third inclined surface 183. The third inclined surface 183 and the second inclined surface 182 are both parallel to the second inclined surface 182, and the third inclined surface 183 can move with the movable block 20 to be flush with the second inclined surface 182. A groove 22 is formed on the lower surface of the other end of the movable block 20, and the upper end of a rotating block 23 that is rotatably mounted on the female sleeve 1 is embedded in the groove 22. Inside the groove 20, a horizontally extending second spring 212 is connected between the lower end of the rotating block 21 and the female sleeve 1. A stop groove 26 is formed on the lower surface of the retaining ring 19's snap-fit ​​part 192 or the movable block 20 extending to one end of the female sleeve 1. When the movable block 20 or the snap-fit ​​part 192 of the retaining ring 19 is withdrawn radially from the inside of the female sleeve 1, the bottom surface of the stop groove 26 is pressed into contact with the upper end surface of the protrusion 17 on the male sleeve 3.

[0037] When it is necessary to separate the male and female connectors of the liquid cooling system, the separation of the male and female connectors is achieved by pressing the telescopic and rotating parts in sequence. The force applied during separation is released in advance during the first press, making the separation more stable, improving safety, and avoiding loosening caused by accidental contact.

[0038] The lower end of the aforementioned female sleeve 1 is provided with a connecting pipe 4. The upper end of the connecting pipe 4 is fitted onto the outside of the female sleeve 1 and is sealed to the outer wall of the female sleeve 1. The lower end of the connecting pipe 4 is installed on the liquid cooling plate 100 and is connected to the liquid cooling circuit.

[0039] The upper end face of the first inner flange 7 is set as an inclined surface and is parallel to the first inclined surface 181.

[0040] The aforementioned support plate 6 is disposed between the lower end of the support rod 2 and the inner wall of the female sleeve 1; the aforementioned support plate 6 is provided with a plurality of spaced through holes 61.

[0041] The upper end face of the floating block 14 has a limiting part 141 that extends axially upward and slides in contact with the inner wall of the male sleeve 3.

[0042] The floating ring 8 and the first inner flange 7 are sealed together by at least one first sealing ring 10 embedded in the side wall of the first inner flange 7. The floating ring 8 and the flange portion 5 of the support rod 2 are sealed together by at least one second sealing ring 11 embedded in the outer side wall of the flange portion 5. The floating block 14 and the second inner flange 15 are sealed together by at least one third sealing ring 16 embedded in the outer side wall of the floating block 14.

[0043] The working principle of this utility model is as follows:

[0044] In use, the opposite ends of the male and female sleeves are connected to the liquid supply circuit and the liquid cooling circuit, respectively.

[0045] When the male and female heads are separated:

[0046] The floating block inside the male sleeve moves to the second inner flange under the action of the male spring and seals the male inner flow channel connected to the liquid supply circuit through the third sealing ring. The floating ring inside the female sleeve moves to the space between the upper flange and the first inner flange under the action of the female spring and seals the female inner flow channel connected to the liquid cooling circuit through the first sealing ring and the second sealing ring.

[0047] The pressing part of the retaining ring moves away from the female sleeve under the action of the first spring, so that the locking part on it is located at the innermost end of its stroke. At the same time, the lower end of the rotating block rotates away from the female sleeve under the action of the second spring, so that its upper end drives the movable block to move radially inward to the innermost end of its stroke. At this time, the second inclined surface on the pressing part of the retaining ring is flush with the third inclined surface on the rotating block, and the end face of one end of the pressing part of the retaining ring and the rotating block is flush with the side wall of the first inner flange.

[0048] When the male and female connectors are plugged into each other:

[0049] The male sleeve moves downward and enters the female sleeve, causing the outer surface of the male sleeve to slide into contact with the side wall of the first inner flange inside the female sleeve. The downward-moving male sleeve pushes the floating ring inside the female sleeve to move downward and compress the female spring. The floating block inside the male sleeve moves upward relative to the male sleeve and compresses the male spring under the push of the upper end face of the fixed support rod. At this time, the flow channels inside the male and female sleeves are connected and interconnected.

[0050] As the protrusion on the male sleeve moves down with the male sleeve until its first inclined surface contacts the second and third inclined surfaces, the protrusion continues to move down, simultaneously pushing the pressing part of the retaining ring and the movable block, which can only move radially, to move outwards. This causes the pressing part of the retaining ring to move closer to the female sleeve, squeezing the first spring and causing the lower end of the rotating block, whose upper end rotates outwards, to rotate inwards, compressing the second spring.

[0051] When the protrusion moves below the pressing part and movable block of the retaining ring, the pressing part and movable block of the retaining ring lose the restriction of the protrusion and reset inward under the action of the first spring and the second spring, respectively. This allows the lower surface of the pressing part of the retaining ring or the movable block to overlap with the upper end surface of the protrusion to stop the male sleeve. At this time, there is a gap between the bottom surface of the stop groove on the locking part of the movable block or the retaining ring and the upper end surface of the protrusion on the male sleeve.

[0052] When the connected male and female connectors are separated:

[0053] If the stop groove is located on the lower surface of the snap ring's engagement part, first press the lower end of the rotating block towards the female sleeve, causing the upper end of the rotating block to drive the movable block outward and out of the area above the protrusion. The male sleeve, having lost the stop position of the movable block, moves upward under the action of the female spring until the upper end face of its protrusion contacts the bottom surface of the stop groove on the lower surface of the snap ring's engagement part. During this process, the force of the female spring is released to a certain extent, and the male and female ends are not yet separated. Next, push the pressing part of the snap ring towards the female sleeve, causing the protrusion of the snap ring to move outward and out of the area above the protrusion. The male sleeve, having completely lost the stop position, continues to move smoothly upward under the action of the female spring, which has already released some force, thereby pulling the male sleeve out of the female sleeve. Then, release the pressing part of the snap ring and the lower end of the rotating block, causing the protrusion of the snap ring and the rotating block to return to the innermost end of their stroke under the action of the first spring and the second spring, respectively.

[0054] If the stop groove is located on the lower surface of the movable block, first push the pressing part of the retaining ring towards the direction of the female sleeve, and then press the lower end of the rotating block towards the direction of the female sleeve.

[0055] After the male and female springs lose their compressive force, they reset. Under the action of the reset male spring, the floating block inside the male sleeve moves back to the second inner flange and re-seals the inner flow channel of the male head through the third sealing ring. Under the action of the reset female spring, the floating ring inside the female sleeve moves back between the upper flange and the first inner flange and re-seals the inner flow channel of the female head through the first and second sealing rings.

[0056] When using the above-mentioned liquid cooling system, after the male and female connectors are connected, the liquid supply circuit and the liquid cooling circuit are connected. After the male and female connectors are separated, the flow channels of the liquid supply circuit and the liquid cooling circuit can be sealed. It also facilitates the mutual insertion and separation of the male and female connectors. Furthermore, the separation of the male and female connectors can be achieved by pressing the telescopic and rotating parts that are asymmetrically arranged on both sides of the female connector sleeve. This can effectively prevent the male and female connectors from becoming loose due to accidental contact, improve the safety and stability during use, and release part of the force that the male and female connectors are subjected to during separation when they are first pressed, so as to achieve stable separation between the male and female connectors.

[0057] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A liquid cooling system, comprising: A liquid cooling plate (100) and a liquid supply circuit (200) with a built-in liquid cooling circuit are provided. The liquid cooling plate (100) is disposed on the surface of the heat-generating element of the server. The liquid supply circuit (200) is connected to the liquid cooling circuit of the liquid cooling plate (100) through a liquid cooling connector. The liquid cooling connector includes: a female sleeve (1) whose lower end is connected to the liquid inlet end of the liquid cooling circuit on the liquid cooling plate (100), a support rod (2) disposed axially in the female sleeve (1), and a female sleeve (1) whose upper end is connected to the liquid supply circuit (200). When the male sleeve (3) is embedded axially downward into the female sleeve (1), the liquid supply circuit (200) is connected to the liquid cooling circuit of the liquid cooling plate (100). The upper end of the support rod (2), which has a support plate (6) installed at the lower end, has a flange (5) that extends radially outward. The inner wall of the upper part of the female sleeve (1) has a first inner flange (7) that extends radially inward. The first inner flange (7), whose side wall is flush with the outer side of the male sleeve (3), is sealed with the flange (5) of the support rod (2) and a floating ring (8) that mates with the lower end face of the male sleeve (3). A female spring (9) is provided between the floating ring (8), which can move axially, and the support plate (6). The male sleeve (3) is provided with a stop ring (12), a male spring (13), and a floating block (14) that mates with the upper end face of the support rod (2) in sequence along the axial direction. The inner wall of the lower end of the male sleeve (3), which has a stop ring (12) fixedly installed at the upper end, has a second inner flange (15) that extends radially inward. The sidewall of the second inner flange (15) is sealed to a floating block (14) that can move axially. A protrusion (17) extending radially outward is provided on the outer sidewall of the male sleeve (3). The lower end face of the protrusion (17) is configured as a first inclined surface (181) extending radially outward at the upper end. A retaining ring (19) that can move radially is installed on the female sleeve (1) and above the first inner flange (7). One side of the retaining ring (19) has a pressing part (191). A first spring (211) extending horizontally is provided between the pressing part (191) located outside the female sleeve (1) and the female sleeve (1). A snap-fit ​​part (192) extending radially into the female sleeve (1) is formed on the inner wall of the other side of the retaining ring (19). The upper end face of the snap-fit ​​part (192) is configured as a second inclined surface (182). One end of a movable block (20) that can move in the same direction as the retaining ring (19) is embedded in the retaining part (192) of the retaining ring (19) and is provided with a third inclined surface (183). The third inclined surface (183) and the second inclined surface (182) are both parallel to the second inclined surface (182), and the third inclined surface (183) can move with the movable block (20) to be flush with the second inclined surface (182). A groove (22) is provided on the lower surface of the other end of the movable block (20). The upper end of a rotating block (23) rotatably mounted on the female sleeve (1) is embedded in the groove (22). Inside the groove (22), a horizontally extending second spring (212) is connected between the lower end of the rotating block (23) and the female sleeve (1). A stop groove (26) is provided on the lower surface of the retaining ring (19) or the movable block (20) extending to one end of the female sleeve (1). When the movable block (20) or the retaining ring (19) retracts radially from the inside of the female sleeve (1), the bottom surface of the stop groove (26) is pressed against the upper end surface of the protrusion (17) on the male sleeve (3).

2. The liquid cooling system according to claim 1, characterized in that: The lower end of the female head sleeve (1) is provided with a connecting pipe (4). The upper end of the connecting pipe (4) is fitted onto the outside of the female head sleeve (1) and is sealed to the outer wall of the female head sleeve (1). The lower end of the connecting pipe (4) is installed on the liquid cooling plate (100) and is connected to the liquid cooling circuit.

3. The liquid cooling system according to claim 1, characterized in that: The upper end face of the first inner flange (7) is set as an inclined surface and is parallel to the first inclined surface (181).

4. The liquid cooling system according to claim 1, characterized in that: The support plate (6) is located between the lower end of the support rod (2) and the inner wall of the female sleeve (1).

5. The liquid cooling system according to claim 4, characterized in that: The support plate (6) has several spaced through holes (61).

6. The liquid cooling system according to claim 1, characterized in that: The protrusion (17) extends circumferentially along the outer side wall of the male sleeve (3).

7. The liquid cooling system according to claim 1, characterized in that: The upper end face of the floating block (14) has a limiting part (141) that extends axially upward and slides in contact with the inner wall of the male sleeve (3).

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