Liquid leakage detection sheet and liquid cooling device
By designing a liquid leakage detection sheet adapted to the bottom surface of the liquid collecting tank, the problem of liquid leakage detection in the liquid cooling device in large areas is solved, efficient liquid leakage detection and multi-angle detection are achieved, and wire disconnection is avoided. Flatness issue.
Patent Information
- Application Number
- CN202420143926.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-19
AI Technical Summary
Existing liquid cooling devices are prone to liquid leakage during operation, especially in large areas, which are difficult to effectively detect and process, which may lead to damage to electronic components and data loss.
A liquid leakage detection sheet is designed, including a substrate, a first liquid leakage detection wire and a second liquid leakage detection wire. The shape of the substrate is adapted to the inner bottom surface of the liquid collection tank, and the wires are bent and distributed, so that they can be fully laid on the collecting tank. The inner bottom surface of the liquid tank improves assembly convenience and detection accuracy, and is suitable for liquid leakage detection areas with large areas.
It is effectively applicable to large-area fluid leakage detection areas, avoids the problem of wire disconnection, improves detection accuracy and assembly convenience, and is suitable for liquid leakage detection in infusion pipelines, realizing liquid leakage detection within a multi-angle range.
Smart Images
Figure CN222188705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid cooling devices, in particular to a liquid leakage detection piece and a liquid cooling device. Background Art
[0002] The server will generate a lot of heat during operation. In order to ensure the normal operation of the server, a cooling device is needed to dissipate the heat of the server. The cooling devices mainly include air cooling devices and liquid cooling devices. Liquid cooling devices are widely used due to their advantages such as fast heat dissipation, low noise, low energy consumption and good environmental adaptability.
[0003] Since liquid cooling devices may leak during operation, if the leaked liquid comes into contact with electronic components on the server, it may damage the electronic components or even the entire server, resulting in serious consequences such as data loss.
[0004] At present, leakage detection tapes are mainly used for leakage detection. However, leakage detection tapes are usually only suitable for leakage detection of infusion pipelines and are difficult to adapt to leakage detection areas with larger areas. Utility Model Content
[0005] One object of the utility model is to provide a liquid leakage detection sheet that can be effectively applied to occasions where the liquid leakage detection area is large. Another object is to provide a liquid cooling device including the liquid leakage detection sheet.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A liquid leakage detection sheet comprises: a substrate, a first liquid leakage detection wire and a second liquid leakage detection wire, wherein the outer shape of the substrate in a top projection direction is adapted to the outer shape of the inner bottom surface of a liquid collecting tank in a top projection direction, the substrate is used to be laid on the inner bottom surface of the liquid collecting tank, and the first liquid leakage detection wire and the second liquid leakage detection wire are distributed on the substrate in a bent shape.
[0008] In some embodiments, the first leakage detection wire includes a first leakage detection main line and at least one first leakage detection branch line, the first leakage detection branch line is connected to the first leakage detection main line, the second leakage detection wire includes a second leakage detection main line and at least one second leakage detection branch line, the second leakage detection branch line is connected to the second leakage detection main line, and the first leakage detection main line and the first leakage detection branch line are spaced apart from the second leakage detection main line and the second leakage detection branch line.
[0009] In some embodiments, the first leakage detection main line and the second leakage detection main line are continuously distributed along the sides of the upper surface of the substrate, and the first leakage detection branch line and the second leakage detection branch line are distributed within the range surrounded by the first leakage detection main line and the second leakage detection main line.
[0010] In some embodiments, at least one first main line detection sheet is provided on the side of the first leakage detection main line facing the second leakage detection branch line, and at least one second branch line detection sheet is provided on the side of the second leakage detection branch line facing the first leakage detection main line; at least one second main line detection sheet is provided on the side of the second leakage detection main line facing the first leakage detection branch line, and at least one first branch line detection sheet is provided on the side of the first leakage detection branch line facing the second leakage detection main line.
[0011] In some embodiments, at least one first branch line detection piece is respectively provided on both sides of the first leakage detection branch line; at least one second branch line detection piece is respectively provided on both sides of the second leakage detection branch line; the first branch line detection piece on the side of the first leakage detection branch line facing the second leakage detection main line is staggered with the second main line detection piece, and the first branch line detection piece on the other side of the first leakage detection branch line is staggered with the second branch line detection piece; the second branch line detection piece on the side of the second leakage detection branch line facing the first leakage detection main line is staggered with the first main line detection piece, and the second branch line detection piece on the other side of the second leakage detection branch line is staggered with the first branch line detection piece.
[0012] In some embodiments, the first branch line detection pieces on both sides of the first liquid leakage detection branch line are staggered and distributed, and the second branch line detection pieces on both sides of the second liquid leakage detection branch line are staggered and distributed.
[0013] In some embodiments, a liquid injection joint, a liquid return joint and a liquid extraction area are provided on the bottom plate of the liquid collecting tank, a liquid injection avoidance port for avoiding the liquid injection joint and a liquid return avoidance port for avoiding the liquid return joint are provided on the substrate, and a liquid extraction avoidance port for avoiding the liquid extraction area is provided on the substrate.
[0014] In some embodiments, the first lead-out terminals of the first leakage detection wire and the second leakage detection wire are close to the liquid injection avoidance port, and the second lead-out terminals of the first leakage detection wire and the second leakage detection wire are close to the liquid return avoidance port.
[0015] In some embodiments, a liquid extraction area is provided on the bottom plate of the liquid collecting tank, and a liquid extraction avoidance port for avoiding the liquid extraction area is provided on the substrate.
[0016] In some embodiments, the leakage detection sheet also includes a first broken wire detection wire and a second broken wire detection wire arranged on the substrate, the first broken wire detection wire is located on the outside of the first leakage detection wire and is spaced apart from the first leakage detection wire, and the second broken wire detection wire is located on the outside of the second leakage detection wire and is spaced apart from the second leakage detection wire.
[0017] A liquid cooling device comprises the liquid leakage detection sheet as described in any one of the above items, and also comprises the liquid collecting trough, wherein the liquid leakage detection sheet is laid on the inner bottom surface of the liquid collecting trough.
[0018] Compared with the prior art, the above technical solution has the following advantages:
[0019] The utility model provides a liquid leakage detection sheet and liquid cooling device. Since the outer shape of the substrate in the top projection direction is adapted to the outer shape of the inner bottom surface of the liquid collecting tank in the top projection direction, the substrate can be fully spread on the inner bottom surface of the liquid collecting tank. Compared with the prior art that uses a liquid leakage detection belt to be bent and attached to the inner bottom surface of the liquid collecting tank, it can not only improve the convenience of assembly of the liquid leakage detection sheet, but also avoid the problem of the first liquid leakage detection wire and the second liquid leakage detection wire being broken due to bending. In addition, when the liquid leakage detection belt is bent and laid, it is difficult to ensure the flatness of the laying. Therefore, the liquid leakage detection sheet provided by the utility model can be effectively applied to occasions with a large leakage area, and can also be applied to leakage detection of infusion pipelines. For example, the liquid leakage detection sheet is bent to be rolled into an arc structure that adapts to the infusion pipeline, so as to realize leakage detection of the infusion pipeline within a multi-angle range in the circumferential direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0021] Figure 1 A schematic diagram of the structure of a liquid leakage detection sheet provided by a specific implementation mode of the utility model;
[0022] Figure 2 A schematic structural diagram of a liquid leakage detection sheet provided by another specific embodiment of the utility model;
[0023] Figure 3 A schematic diagram of a top view of a liquid collecting tank of a liquid cooling device provided by a specific embodiment of the utility model;
[0024] Figure 4The present invention is a schematic cross-sectional structural diagram of a liquid collecting tank of a liquid cooling device provided in a specific embodiment of the present invention.
[0025] The reference numerals are as follows:
[0026] 10 is a substrate, 11 is a liquid injection avoidance port, 12 is a liquid return avoidance port, and 13 is a liquid extraction avoidance port;
[0027] 20 is a first liquid leakage detection wire, 21 is a first liquid leakage detection main line, 211 is a first main line detection sheet, 22 is a first liquid leakage detection branch line, and 221 is a first branch line detection sheet;
[0028] 30 is a second liquid leakage detection wire, 31 is a second liquid leakage detection main line, 311 is a second main line detection sheet, 32 is a second liquid leakage detection branch line, and 321 is a second branch line detection sheet;
[0029] 40 is a first lead-out terminal;
[0030] 50 is a second lead-out terminal;
[0031] 60 is a first disconnection detection wire;
[0032] 70 is a second wire break detection wire;
[0033] 80 is a liquid collecting tank, 81 is a liquid injection joint, 82 is a liquid return joint, and 83 is a liquid extraction area. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] Please refer to Figure 1 and Figure 3The embodiment of the utility model provides a liquid leakage detection sheet, comprising: a substrate 10, a first liquid leakage detection wire 20 and a second liquid leakage detection wire 30. The outer shape of the substrate 10 in the top projection direction is adapted to the outer shape of the inner bottom surface of the liquid collecting tank 80 in the top projection direction. The liquid collecting tank 80 can collect liquid leaked from the liquid cooling device. When the inner bottom surface of the liquid collecting tank 80 is rectangular, the substrate 10 is also rectangular. When the inner bottom surface of the liquid collecting tank 80 is other shapes, the outer shape of the substrate 10 is adapted to the liquid collecting tank 80. The substrate 10 can be laid on the inner bottom surface of the liquid collecting tank 80, and the two can be fixed by bonding or other methods. The first liquid leakage detection wire 20 and the second liquid leakage detection wire 30 are distributed on the substrate 10 in a bent shape, and the first liquid leakage detection wire 20 and the second liquid leakage detection wire 30 can be integrally formed on the substrate 10 by electroplating. When the leaking liquid contacts the first leaking liquid detection wire 20 and the second leaking liquid detection wire 30 at the same time, the first leaking liquid detection wire 20 and the second leaking liquid detection wire 30 can be short-circuited, thereby realizing leaking liquid detection. Through the bent distribution mode, the leaking liquid detection range of the leaking liquid detection belt can be improved, thereby improving the leaking liquid detection accuracy. Compared with the prior art that the leaking liquid detection belt is bent and attached to the inner bottom surface of the liquid collecting tank 80, it can not only improve the convenience of assembly of the leaking liquid detection sheet, but also avoid the problem of the first leaking liquid detection wire 20 and the second leaking liquid detection wire 30 being broken due to bending. In addition, when the leaking liquid detection belt is laid in a bent manner, it is difficult to ensure the flatness of the laying. Therefore, the leaking liquid detection sheet provided by the utility model can be effectively applied to occasions with a large leaking liquid area, and can also be applied to leaking liquid detection of infusion pipelines, for example, the leaking liquid detection sheet is bent to be rolled into an arc structure adapted to the infusion pipeline, thereby realizing leaking liquid detection within a multi-angle range of the infusion pipeline.
[0036] In some embodiments, the first leakage detection wire 20 includes a first leakage detection main line 21 and at least one first leakage detection branch line 22, the first leakage detection branch line 22 is connected to the first leakage detection main line 21, and the two ends of the first leakage detection main line 21 are used to connect to the leakage detector, or to connect to other leakage detection belts or leakage detection sheets; the second leakage detection wire 30 includes a second leakage detection main line 31 and at least one second leakage detection branch line 32, the second leakage detection branch line 32 is connected to the second leakage detection main line 31, and the two ends of the second leakage detection main line 31 are used to connect to the leakage detector, or to connect to other leakage detection belts or leakage detection sheets. The first leakage detection main line 21 and the first leakage detection branch line 22 are spaced apart from the second leakage detection main line 31 and the second leakage detection branch line 32, that is, the first leakage detection main line 21 is spaced apart from the second leakage detection main line 31 and the second leakage detection branch line 32, and the first leakage detection branch line 22 also needs to be spaced apart from the second leakage detection main line 31 and the second leakage detection branch line 32. By distributing the first leakage detection branch line 22 and the second leakage detection branch line 32 on the substrate 10, the leakage detection accuracy of the leakage detection sheet can be effectively improved.
[0037] In some embodiments, Figure 1 and Figure 2 As shown, the first leakage detection main line 21 and the second leakage detection main line 31 are continuously distributed along the side of the upper surface of the substrate 10, and the first leakage detection branch line 22 and the second leakage detection branch line 32 are distributed within the range surrounded by the first leakage detection main line 21 and the second leakage detection main line 31. Figure 1 As shown, the first leakage detection main line 21 has two first leakage detection branch lines 22, and the second leakage detection main line 31 has two second leakage detection branch lines 32. The two first leakage detection branch lines 22 and the two second leakage detection branch lines 32 are arranged alternately. Figure 2 As shown in FIG. 1 , the first leakage detection main line 21 has a first leakage detection branch line 22, and the second leakage detection main line 31 has a second leakage detection branch line 32. The first leakage detection branch line 22 and the second leakage detection branch line 32 are located in the middle of the substrate 10. When the area of the inner bottom surface of the water collection tank is larger, a leakage detection sheet with more first leakage detection branch lines 22 and second leakage detection branch lines 32 can be used, such as Figure 1 When the area of the inner bottom surface of the sump is smaller, the first leakage detection branch line 22 and the second leakage detection branch line 32 can be used with fewer leakage detection sheets, such as Figure 2 shown.
[0038] In some embodiments, Figure 1 and Figure 2As shown, at least one first main line detection piece 211 is provided on the side of the first leakage detection main line 21 facing the second leakage detection branch line 32, and multiple first main line detection pieces 211 are distributed at equal intervals or unequal intervals, and at least one second branch line detection piece 321 is provided on the side of the second leakage detection branch line 32 facing the first leakage detection main line 21, and multiple second branch line detection pieces 321 are distributed at equal intervals or unequal intervals; at least one second main line detection piece 311 is provided on the side of the second leakage detection main line 31 facing the first leakage detection branch line 22, and multiple second main line detection pieces 311 are distributed at equal intervals or unequal intervals, and at least one first branch line detection piece 221 is provided on the side of the first leakage detection branch line 22 facing the second leakage detection main line 31, and multiple first branch line leakage detection pieces are distributed at equal intervals or unequal intervals. When the leaking liquid contacts the first leakage main line and the second leakage detection main line 31 at the same time, or contacts the first leakage detection main line 21 and the second leakage detection branch line 32 at the same time, or contacts the second leakage detection main line 31 and the first leakage detection branch line 22 at the same time, or contacts the first main line detection piece 211 and the second branch line detection piece 321 at the same time, or contacts the first main line detection piece 211 and the second leakage detection branch line 32 at the same time, or contacts the second main line detection piece 311 and the first branch line detection piece 221 at the same time, or the second main line detection piece 311 contacts the first leakage detection branch line 22, the leakage detection function can be realized.
[0039] It should be noted that the first liquid leakage detection branch line 22 and the second liquid leakage detection branch line 32 may also be arranged near the side of the substrate 10, and the sections of the first liquid leakage detection main line 21 and the second liquid leakage detection main line 31 for contacting the leakage may be arranged in the middle or near the middle of the substrate 10, or the first liquid leakage detection branch line 22 and the second liquid leakage detection branch line 32 may be distributed in half of the area on the upper surface of the base tape, and the first liquid leakage detection main line 21 and the second liquid leakage detection main line 31 may be distributed in the other half of the area on the upper surface of the base tape. Since the first liquid leakage branch line and the second liquid leakage detection do not have a direct connection relationship with the liquid leakage detector or other liquid leakage detection tape or other liquid leakage detection sheet, part or the entirety of the first liquid leakage branch line may be cut off from the first liquid leakage main line, and part or the entirety of the second liquid leakage branch line may be cut off from the second liquid leakage main line, so that the liquid leakage detection sheet can adapt to scenarios with different liquid leakage detection areas.
[0040] In some embodiments, Figure 1 and Figure 2As shown, at least one first branch line detection piece 221 is respectively provided on both sides of the first leakage detection branch line 22; at least one second branch line detection piece 321 is respectively provided on both sides of the second leakage detection branch line 32; the first branch line detection piece 221 on the side of the first leakage detection branch line 22 facing the second leakage detection main line 31 is staggered with the second main line detection piece 311, and the first branch line detection piece 221 on the other side of the first leakage detection branch line 22 is staggered with the second branch line detection piece 321; the second branch line detection piece 321 on the side of the second leakage detection branch line 32 facing the first leakage detection main line 21 is staggered with the first main line detection piece 211, and the second branch line detection piece 321 on the other side of the second leakage detection branch line 32 is staggered with the first branch line detection piece 221. By respectively arranging the first branch line detection pieces 221 on both sides of the first leakage detection branch line 22, it is convenient to arrange the first leakage branch line between the second leakage detection main line 31 and the second leakage branch line; by respectively arranging the second branch line detection pieces 321 on both sides of the second leakage detection branch line 32, it is convenient to arrange the second leakage detection branch line 32 between the first leakage detection main line 21 and the first leakage detection branch line 22.
[0041] In some embodiments, the first branch line detection pieces 221 on both sides of the first leakage detection branch line 22 are staggered, that is, the first branch line detection pieces 221 on both sides are located at different positions in the length direction of the first leakage detection branch line 22, and the second branch line detection pieces 321 on both sides of the second leakage detection branch line 32 are staggered, that is, the second branch line detection pieces 321 on both sides are located at different positions in the length direction of the second leakage detection branch line 32. The first main line detection piece 211 and the second branch line detection piece 321 on the second leakage detection branch line 32 far away from it are located in the same extension direction, the second main line detection piece 311 and the first branch line detection piece 221 on the first leakage detection branch line 22 far away from it are located in the same extension direction, and the first branch line detection piece 221 and the second branch line detection piece 321 located on different sides are located in the same extension direction. For specific distribution methods, please refer to Figure 1 and Figure 2 shown.
[0042] In some embodiments, a liquid injection joint 81 and a liquid return joint 82 are provided on the bottom plate of the liquid collecting tank 80, the liquid injection joint 81 is used to transport the cooling liquid to the bottom of the liquid collecting tank 80, and the liquid return joint 82 is used to transport the cooling liquid after heat exchange from the bottom of the liquid collecting tank 80, wherein a liquid injection avoidance port 11 for avoiding the liquid injection joint 81 and a liquid return avoidance port 12 for avoiding the liquid return joint 82 are provided on the substrate 10. The liquid injection avoidance port 11 and the liquid return avoidance port 12 can avoid the interference of the liquid injection joint 81 and the liquid return joint 82 on the leakage detection sheet, thereby ensuring the flatness of the leakage detection sheet laid on the bottom plate of the liquid collecting tank 80.
[0043] In some embodiments, Figure 1and Figure 2 As shown, the first lead-out terminal 40 of the first leakage detection wire 20 and the second leakage detection wire 30 is close to the liquid injection avoidance port 11, and the second lead-out terminal 50 of the first leakage detection wire 20 and the second leakage detection wire 30 is close to the liquid return avoidance port 12. Since the infusion pipeline in the liquid cooling system is connected to the injection joint 81, and the return pipeline is connected to the return joint 82, wherein the infusion pipeline and the injection pipeline are provided with a leakage detection belt, and the leakage detection belt will extend from the infusion pipeline and the injection pipeline, the present application sets the first lead-out terminal 40 at a position close to the liquid injection avoidance port 11, and sets the second lead-out terminal 50 at a position close to the liquid return avoidance port 12, so as to facilitate the connection between the leakage detection sheet and the leakage detection belt.
[0044] In some embodiments, a liquid extraction area 83 is provided on the bottom plate of the liquid collecting tank 80, wherein the height of the liquid extraction area 83 is lower than the position of the upper surface of the bottom plate, so that the leaked liquid collected in the liquid collecting tank 80 flows to the liquid extraction area 83, and the inlet of the water extraction pipe can be set in the liquid extraction area 83, and the leaked liquid in the liquid collecting tank 80 can be extracted through the water extraction pipe. The substrate 10 is provided with a liquid extraction avoidance port 13 for avoiding the liquid extraction area 83, and the liquid extraction avoidance port 13 can prevent the leakage detection sheet from covering the liquid extraction area 83, thereby ensuring that the leaked liquid flows into the liquid extraction area 83.
[0045] In some embodiments, the leakage detection sheet further includes a first disconnection detection wire 60 and a second disconnection detection wire 70 disposed on the substrate 10, the first disconnection detection wire 60 is located outside the first leakage detection wire 20 and is spaced apart from the first leakage detection wire 20, and the second disconnection detection wire 70 is located outside the second leakage detection wire 30 and is spaced apart from the second leakage detection wire 30. Both ends of the first disconnection detection wire 60 and the second disconnection detection wire 70 extend to the first lead-out terminal 40 and the second lead-out terminal 50, respectively. The leakage detector can detect whether the first leakage detection wire 20 and the second leakage detection wire 30 are disconnected through the first disconnection detection wire 60 and the second disconnection detection wire 70, so as to facilitate timely maintenance of the leakage detection sheet when disconnected.
[0046] An embodiment of the utility model also provides a liquid cooling device, comprising a leakage detection sheet provided by any of the above embodiments, and also comprising a liquid collecting trough 80, wherein the leakage detection sheet is fully spread on the inner bottom surface of the liquid collecting trough 80, and the leakage detection sheet can be installed on the inner bottom surface of the liquid collecting trough 80 by pasting or other fixing methods. When liquid seeps upward from the four sides of the bottom of the liquid collecting trough 80 to the upper surface of the leakage detection sheet, or liquid drips downward from the liquid injection joint 81 and the liquid return joint 82 and falls on the upper surface of the leakage detection sheet, the leakage detection sheet can detect leakage in the liquid cooling device.
[0047] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0048] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0049] The above is a detailed introduction to a liquid leakage detection sheet and a liquid cooling device provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A liquid leakage detection sheet, It is characterized in that include: A substrate (10), a first liquid leakage detection wire (20) and a second liquid leakage detection wire (30), wherein the outer shape of the substrate (10) in a top projection direction is adapted to the outer shape of the inner bottom surface of the liquid collecting tank (80) in a top projection direction, the substrate (10) is used for laying on the inner bottom surface of the liquid collecting tank (80), and the first liquid leakage detection wire (20) and the second liquid leakage detection wire (30) are distributed on the substrate (10) in a bent shape.
2. The liquid leakage detection sheet according to claim 1, It is characterized in that The first liquid leakage detection wire (20) comprises a first liquid leakage detection main line (21) and at least one first liquid leakage detection branch line (22), the first liquid leakage detection branch line (22) being connected to the first liquid leakage detection main line (21), the second liquid leakage detection wire (30) comprises a second liquid leakage detection main line (31) and at least one second liquid leakage detection branch line (32), the second liquid leakage detection branch line (32) being connected to the second liquid leakage detection main line (31), the first liquid leakage detection main line (21) and the first liquid leakage detection branch line (22) being spaced from the second liquid leakage detection main line (31) and the second liquid leakage detection branch line (32).
3. The liquid leakage detection sheet according to claim 2, It is characterized in that The first liquid leakage detection main line (21) and the second liquid leakage detection main line (31) are continuously distributed along the side of the upper surface of the substrate (10), and the first liquid leakage detection branch line (22) and the second liquid leakage detection branch line (32) are distributed within the range enclosed by the first liquid leakage detection main line (21) and the second liquid leakage detection main line (31).
4. The liquid leakage detection sheet according to claim 3, It is characterized in that At least one first main line detection sheet (211) is provided on the side of the first liquid leakage detection main line (21) facing the second liquid leakage detection branch line (32), and at least one second branch line detection sheet (321) is provided on the side of the second liquid leakage detection branch line (32) facing the first liquid leakage detection main line (21); at least one second main line detection sheet (311) is provided on the side of the second liquid leakage detection main line (31) facing the first liquid leakage detection branch line (22), and at least one first branch line detection sheet (221) is provided on the side of the first liquid leakage detection branch line (22) facing the second liquid leakage detection main line (31).
5. The liquid leakage detection sheet according to claim 4, It is characterized in that At least one first branch line detection sheet (221) is respectively arranged on both sides of the first liquid leakage detection branch line (22); at least one second branch line detection sheet (321) is respectively arranged on both sides of the second liquid leakage detection branch line (32); the first branch line detection sheet (221) on the side of the first liquid leakage detection branch line (22) facing the second liquid leakage detection main line (31) is staggered with the second main line detection sheet (311), and the first branch line detection sheet (221) on the other side of the first liquid leakage detection branch line (22) is staggered with the second branch line detection sheet (321); the second branch line detection sheet (321) on the side of the second liquid leakage detection branch line (32) facing the first liquid leakage detection main line (21) is staggered with the first main line detection sheet (211), and the second branch line detection sheet (321) on the other side of the second liquid leakage detection branch line (32) is staggered with the first branch line detection sheet (221).
6. The liquid leakage detection sheet according to claim 5, It is characterized in that The first branch line detection pieces (221) on both sides of the first liquid leakage detection branch line (22) are staggered and distributed, and the second branch line detection pieces (321) on both sides of the second liquid leakage detection branch line (32) are staggered and distributed.
7. The liquid leakage detection sheet according to claim 1, It is characterized in that The bottom plate of the liquid collecting tank (80) is provided with a liquid injection joint (81), a liquid return joint (82) and a liquid extraction area (83); the substrate (10) is provided with a liquid injection avoidance port (11) for avoiding the liquid injection joint (81) and a liquid return avoidance port (12) for avoiding the liquid return joint (82); and the substrate (10) is provided with a liquid extraction avoidance port (13) for avoiding the liquid extraction area (83).
8. The liquid leakage detection sheet according to claim 7, It is characterized in that The first lead-out wiring terminals (40) of the first liquid leakage detection wire (20) and the second liquid leakage detection wire (30) are close to the liquid injection avoidance port (11), and the second lead-out wiring terminals (50) of the first liquid leakage detection wire (20) and the second liquid leakage detection wire (30) are close to the liquid return avoidance port (12).
9. The liquid leakage detection sheet according to any one of claims 1 to 8, It is characterized in that The liquid leakage detection sheet further comprises a first disconnection detection wire (60) and a second disconnection detection wire (70) arranged on the substrate (10); the first disconnection detection wire (60) is located outside the first liquid leakage detection wire (20) and is spaced apart from the first liquid leakage detection wire (20); the second disconnection detection wire (70) is located outside the second liquid leakage detection wire (30) and is spaced apart from the second liquid leakage detection wire (30).
10. A liquid cooling device, It is characterized in that The liquid leakage detection sheet comprises the liquid leakage detection sheet according to any one of claims 1 to 9, and further comprises the liquid collecting trough (80), wherein the liquid leakage detection sheet is laid on the inner bottom surface of the liquid collecting trough (80).