CN115962899A - Liquid leakage detection device for liquid cooling system, liquid cooling system and server - Google Patents

Abstract

The invention relates to the technical field of leakage detection, and provides a leakage detection device of a liquid cooling heat dissipation system, the liquid cooling heat dissipation system and a server. The above-mentioned liquid cooling system's weeping detection device includes: the liquid leakage induction line is woven into a net structure and wraps the outside of a cooling pipe of the liquid cooling heat dissipation system; the liquid leakage controller is electrically connected with the liquid leakage induction line and used for judging the position of the cooling pipe where liquid leakage occurs according to a signal sent by the liquid leakage induction line. The liquid leakage detection device of the liquid cooling heat dissipation system is characterized in that the liquid leakage induction line of the net-shaped structure is arranged outside the cooling pipe, when liquid leakage occurs in the cooling pipe, the liquid leakage induction line sends a signal to the liquid leakage controller, the position of the short circuit of the liquid leakage induction line can be calculated by the liquid leakage controller, the liquid leakage position of the cooling pipe is further determined, the contact range of the liquid leakage induction line and the liquid leakage in the unit area is enlarged by the liquid leakage induction line of the net-shaped structure, and therefore the liquid leakage detection precision is improved.

Description

Liquid leakage detection device for liquid cooling system, liquid cooling system and server

technical field

The invention relates to the technical field of liquid leakage detection, in particular to a liquid leakage detection device for a liquid cooling system, a liquid cooling system and a server.

Background technique

With the development of the network, the demand for data volume processing is increasing, and the performance requirements of the server are also getting higher and higher, and the power consumption of the server is also getting higher and higher. From using a heat sink to adding a fan on the heat sink, so that the server system can maintain a stable operating temperature. Up to now, the air-cooled heat dissipation method has been unable to meet today's heat dissipation needs. The liquid-cooled heat dissipation system was born. The liquid-cooled heat dissipation system can efficiently take away the heat of the high-heat core heating chip. The liquid-cooled heat dissipation system has high heat dissipation efficiency. High performance, energy saving and noise reduction of cooling system.

The liquid cooling system needs to accurately monitor the leakage and deal with it in time, otherwise it will cause irreversible damage to the server. In the prior art, the liquid leakage detection line is usually wound on the water pipe, and the impedance of the liquid leakage detection line will be changed when the water pipe leaks, and the liquid leakage monitoring is realized by detecting the change of impedance. However, the relationship between the impedance of the leakage detection line and the amount of water leakage is nonlinear and unstable. For example, a certain part of the water pipe continues to leak, but the leakage detection line is not wound here. As the wetted area increases, Leakage can only be detected when the liquid leakage detection line is soaked, resulting in low detection accuracy.

Contents of the invention

The invention provides a liquid leakage detection device of a liquid cooling heat dissipation system, a liquid cooling heat dissipation system and a server, which are used to solve the defect of low detection accuracy of liquid leakage of the liquid leakage detection device in the prior art.

The invention provides a liquid leakage detection device for a liquid cooling heat dissipation system, comprising: a liquid leakage induction wire, the liquid leakage induction wire is woven into a mesh structure and wrapped around the cooling pipe of the liquid cooling heat dissipation system, and the liquid leakage induction wire The wire includes a plurality of conductive polymers, and the plurality of conductive polymers are woven into the mesh structure; when the cooling pipe does not leak, the current value between the two conductive polymers is normal value; in the case of leakage of the cooling pipe, the current value between the two conductive polymers changes; the leakage controller is electrically connected with the leakage induction line, and the leakage control The sensor is used to determine the location where the cooling pipe leaks according to the signal sent by the leakage sensing line.

According to a liquid leakage detection device for a liquid cooling system provided by the present invention, the side length of each grid in the network structure is greater than or equal to 0.1 mm and less than or equal to 2 mm.

According to a liquid leakage detection device for a liquid cooling heat dissipation system provided by the present invention, the liquid leakage induction line further includes a water-absorbing coating layer, and the water-absorbing coating layer is wrapped on the outside of the conductive polymer.

According to a liquid leakage detection device for a liquid cooling and heat dissipation system provided by the present invention, the water-absorbing coating layer is coated with color developing powder, so that the water-absorbing coating layer changes color when exposed to water.

According to the liquid leakage detection device of the liquid cooling system provided by the present invention, it also includes a plurality of color sensors, the plurality of color sensors are arranged in the liquid cooling system, and the color sensors are used to monitor the water absorption package The color of the coating changes, and the color sensor is electrically connected with the liquid leakage controller.

According to a liquid leakage detection device of a liquid cooling heat dissipation system provided by the present invention, it also includes: a liquid inlet pipe, used to connect with one end of the first channel in the liquid cold plate; a pair of liquid storage tanks, two of the storage tanks The liquid tanks are respectively arranged on both sides of the liquid cold plate, and each of the liquid storage tank covers is arranged on the outside of the plurality of liquid leakage induction lines on one side of the liquid cold plate, and the liquid storage tanks are used for Collect the leaking fluid.

A liquid leakage detection device for a liquid cooling heat dissipation system according to the present invention further includes: a first valve, arranged on the liquid inlet pipe, the first valve is electrically connected to the liquid leakage controller; a plurality of A first liquid level sensor, one first liquid level sensor is arranged in each of the liquid storage tanks, and the first liquid level sensor is electrically connected to the liquid leakage controller.

A liquid leakage detection device for a liquid cooling system according to the present invention further includes: a plurality of second liquid level sensors, each of the liquid storage tanks is provided with one second liquid level sensor, the The second liquid level sensor is located above the first liquid level sensor, and the second liquid level sensor is electrically connected to the liquid leakage controller; a plurality of liquid outlet pipes are connected to each of the liquid storage tanks One of the liquid outlet pipes, and each of the liquid outlet pipes is provided with a second valve.

The present invention also provides a liquid cooling heat dissipation system, including a liquid cooling plate, a cooling pipe, and the liquid leakage detection device as described above. The interior of the liquid cooling plate is provided with a plurality of passages, and a plurality of passages pass through the cooling The pipes are connected to form a connected cooling pipeline, and the liquid leakage sensing line of the liquid leakage detection device is wrapped around the outside of the cooling pipe in a mesh structure.

The present invention also provides a server, including a casing, a plurality of heating elements, and the liquid cooling system as described above, the liquid cooling system and the plurality of heating elements are arranged in the casing, and the liquid cooling The heat dissipation system is located below the plurality of heating elements.

In the liquid leakage detection device of the liquid cooling heat dissipation system provided by the present invention, a liquid leakage induction line with a mesh structure is arranged outside the cooling pipe, and the liquid leakage induction line is electrically connected with the liquid leakage controller. When the liquid leakage occurs in the cooling pipe , the liquid leakage sensing line sends a signal to the liquid leakage controller, and the liquid leakage controller can calculate the short circuit position of the liquid leakage sensing line, and then determine the leakage position of the cooling pipe, and the liquid leakage sensing line of the mesh structure increases The contact range between the liquid leakage sensing line and the liquid leakage per unit area is widened, thereby improving the accuracy of liquid leakage detection.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is a schematic structural view of a liquid leakage detection device of a liquid cooling heat dissipation system provided by the present invention;

Reference signs:

10: liquid leakage sensing line; 20: liquid inlet pipe; 21: first valve; 30: liquid storage tank; 40: liquid outlet pipe; 41: second valve; 50: first liquid level sensor; 60: second liquid position sensor; 100: liquid cooling plate; 101: cooling pipe.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The features of the terms "first" and "second" in the description and claims of the present invention may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientation or position shown in the drawings The positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The liquid leakage detection device, liquid cooling system and server of the present invention will be described below with reference to FIG. 1 .

As shown in FIG. 1 , in an embodiment of the present invention, the liquid leakage detection device of the liquid cooling heat dissipation system includes: a liquid leakage sensing line 10 and a liquid leakage controller. The liquid leakage induction wire 10 is woven into a mesh structure and wrapped on the outside of the cooling pipe 101 of the liquid cooling heat dissipation system. The liquid leakage induction wire 10 includes a plurality of conductive polymers. When the cooling pipe 101 does not leak, the two conductive The current value between the polymers is normal; in the case of liquid leakage from the cooling pipe 101, the current value between the two conductive polymers changes. The liquid leakage controller is electrically connected with the liquid leakage sensing line 10 , and the liquid leakage controller is used to determine the position of the cooling pipe 101 where the liquid leakage occurs according to the signal sent by the liquid leakage sensing line 10 .

Specifically, the liquid cooling heat dissipation system includes a liquid cold plate 100 and a cooling pipe 101 . The inside of the liquid cooling plate 100 is provided with a plurality of channels, and the plurality of channels are connected by cooling pipes 101 to form a communicating cooling pipeline. The liquid leakage sensing line 10 is wrapped around the cooling tube 101 , and the liquid leakage sensing line 10 has a mesh structure. When the cooling tube 101 does not leak, the current value of the leakage sensing line 10 is a normal value; when the cooling tube 101 leaks, the liquid contacts the leakage sensing line 10, and the current value of the leakage sensing line 10 changes , when the current value of the liquid leakage sensing line 10 changes, the liquid leakage sensing line 10 sends a signal to the liquid leakage controller, and the liquid leakage controller can determine the location where the liquid leakage of the cooling pipe 101 occurs.

Specifically, the liquid leakage induction wire 10 is composed of a plurality of conductive polymers, the plurality of conductive polymers are woven into a network structure, and the resistance per unit length of each conductive polymer is a constant value. When no liquid leakage occurs in the cooling pipe 101, the current value between the two conductive polymers is a normal value. The space is short-circuited and the measured current value changes. According to Ohm’s law, the resistance of the leakage controller is related to the length. Through calculation, the position of the leakage induction line 10 in contact with the leakage can be calculated, and then determined. The location of the liquid leakage of the cooling pipe 101.

Further, the liquid leakage induction line 10 is arranged in a grid structure, which increases the contact range between the liquid leakage induction line 10 and the leakage liquid per unit area, thereby improving The detection accuracy of leakage is improved. Furthermore, the sensitivity of liquid leakage detection can be adjusted by adjusting the size of the grid in the network structure. Specifically, if the detection sensitivity of liquid leakage is to be improved, the size of each grid in the grid structure can be designed to be small Grids can be detected when liquid leakage occurs; if too high detection sensitivity is not required, the size of each grid in the grid structure can be designed as a large grid.

In the liquid leakage detection device of the liquid cooling heat dissipation system provided by the embodiment of the present invention, a liquid leakage sensing line with a network structure is arranged outside the cooling pipe, and the liquid leakage sensing line is electrically connected to the liquid leakage controller, so that the leakage occurs in the cooling pipe. When the liquid is leaking, the liquid leakage sensing line sends a signal to the liquid leakage controller, and the liquid leakage controller can calculate the short circuit position of the liquid leakage sensing line, and then determine the leakage position of the cooling pipe. The liquid leakage sensing line of the mesh structure The contact range between the liquid leakage sensing line and the liquid leakage within a unit area is enlarged, thereby improving the accuracy of liquid leakage detection.

Further, in the embodiment of the present invention, the detection sensitivity of the liquid leakage sensing line 10 can be adjusted according to specific working conditions. If higher detection sensitivity is needed, the size of each grid in the network structure formed by the leakage sensing line 10 can be designed as a small grid, such as the size of each grid is 0.1mm, at this time, the cooling tube Once a liquid leak occurs in 101, the leaked liquid will contact the network structure, thereby detecting the liquid leakage, and then the liquid leakage controller can determine the location where the liquid leakage of the cooling pipe 101 occurs. If higher detection sensitivity is not required, the size of each grid in the network structure formed by the liquid leakage induction line 10 can be designed as a large grid, such as the size of each grid is 2mm, at this time, only when Only when the leakage area of the cooling pipe 101 is equal to or greater than 2mm will the leakage contact with the mesh structure, thereby detecting the leakage. Optionally, in the embodiment of the present invention, the side length of each grid in the network structure is greater than or equal to 0.1 mm and less than or equal to 2 mm.

Further, in the embodiment of the present invention, the liquid leakage sensing line 10 further includes a water-absorbing coating layer, and the water-absorbing coating layer is wrapped on the outside of the conductive polymer.

Specifically, a water-absorbing coating is wrapped on the outside of the conductive polymer, and the water-absorbing coating can absorb a certain amount of leakage to prevent the leakage from falling on the motherboard of the server and causing a short circuit on the motherboard. Optionally, in the embodiment of the present invention, the water-absorbing covering layer may be made of nylon.

Further, in an embodiment of the present invention, the water-absorbing coating layer is coated with color developing powder, so that the water-absorbing coating layer changes color when exposed to water. Specifically, after the water-absorbing coating layer is prepared, the coloring powder can be applied to the water-absorbing coating layer, and the color will be displayed after the water-absorbing coating layer absorbs the leakage. Optionally, the color developing powder can be copper sulfate powder, which is white when it does not encounter liquid leakage, and turns blue after encountering liquid leakage.

Further, the liquid leakage detection device of the liquid cooling heat dissipation system further includes a plurality of color sensors. A plurality of color sensors are arranged in the liquid cooling heat dissipation system, the color sensors are used to monitor the color change of the water-absorbing coating, and the color sensors are electrically connected with the liquid leakage controller.

Specifically, after the liquid leakage induction line 10 fails, when the cooling pipe 101 leaks, the absorbing liquid of the water-absorbing coating leaks, and the chromogenic powder on the water-absorbing coating changes color, and the color sensor detects that the water-absorbing coating has occurred. When the color changes, a signal is sent to the liquid leakage controller, and the liquid leakage controller can know that liquid leakage occurs in the cooling pipe 101 .

In the liquid leakage detection device of the liquid cooling and heat dissipation system provided by the embodiment of the present invention, by setting the water-absorbing coating layer, when the cooling pipe leaks, the water-absorbing coating layer can absorb part of the leaking liquid, preventing the leaking liquid from directly dripping on the server. On the main board, the main board will be short-circuited, which will cause damage to the main board; by applying coloring powder on the water-absorbing coating layer, the leakage of the cooling pipe can be judged by the color change on the water-absorbing coating layer after the liquid leakage induction line fails. liquid, so that the liquid leakage detection device has multiple ways to detect liquid leakage, which improves the performance of the liquid leakage detection device.

As shown in FIG. 1 , in an embodiment of the present invention, the liquid leakage detection device of the liquid cooling heat dissipation system further includes: a liquid inlet pipe 20 and a liquid storage tank 30 . The liquid inlet pipe 20 is used to connect with one end of the first channel in the liquid cold plate 100, and the two liquid storage tanks 30 are respectively arranged on both sides of the liquid cold plate 100, and each liquid storage tank 30 is covered on the liquid cold plate 100 Outside the plurality of liquid leakage sensing lines 10 on one side, the liquid storage tank 30 is used to collect the leakage liquid.

Specifically, after the liquid leakage occurs and falls on the main board of the server, it is very easy to cause a short circuit of the main board. The multiple liquid leakage induction lines 10 on one side are all located in a liquid storage tank 30 , and when the cooling pipe 101 leaks, the leaked liquid will fall into the liquid storage tank 30 to avoid damage to the main board of the server.

When the cooling medium leaks, the flow rate of the cooling medium in the liquid cold plate 100 decreases, which will reduce the cooling capacity of the liquid cold plate 100. At this time, it is necessary to replenish a certain amount of cooling medium in the liquid cold plate 100 in time to ensure The cooling capacity of the liquid cold plate 100. The liquid inlet pipe 20 is connected to one end of the first channel of the liquid cold plate 100 , so that the cooling medium can be replenished in time to ensure the cooling capacity of the liquid cold plate 100 .

Further, as shown in FIG. 1 , in an embodiment of the present invention, the liquid leakage detection device of the liquid cooling heat dissipation system further includes: a first valve 21 and a plurality of first liquid level sensors 50 . The first valve 21 is arranged on the liquid inlet pipe 20, and the first valve 21 is electrically connected with the liquid leakage controller. Each liquid storage tank 30 is provided with a first liquid level sensor 50, and the first liquid level sensor 50 is electrically connected with the liquid leakage controller.

Specifically, each liquid storage tank 30 is provided with a first liquid level sensor 50 for detecting the liquid level of the leaked liquid in the liquid storage tank 30 . When the liquid level of the leaked liquid in the liquid storage tank 30 reaches the preset position, which is the position of the first liquid level sensor 50, the first liquid level sensor 50 sends a signal to the liquid leakage controller, and the liquid leakage controller controls the opening of the first valve 21 , the cooling medium enters the liquid cooling plate 100 from the first pipe 20 to supplement the cooling medium in the liquid cooling plate 100 to ensure the cooling capacity of the liquid cooling plate 100 .

Further, as shown in FIG. 1 , the liquid leakage detection device of the liquid cooling system further includes: multiple second liquid level sensors 60 , multiple liquid outlet pipes 40 and multiple second valves 41 . Each liquid storage tank 30 is provided with a second liquid level sensor 60, the second liquid level sensor 60 is located above the first liquid level sensor 50, and the second liquid level sensor 60 is electrically connected to the liquid leakage controller. Each liquid storage tank 30 is also connected with a liquid outlet pipe 40 , and a second valve 41 is arranged on the liquid outlet pipe 40 .

Specifically, in this embodiment, when the height of the liquid leakage in the liquid storage tank 30 reaches the position of the first liquid level sensor 50, the first liquid level sensor 50 sends a signal to the liquid leakage controller, and the liquid leakage controller The first valve 21 is controlled to open, and the cooling medium enters the liquid cold plate 100 from the first pipe 20 to ensure the cooling capacity of the liquid cold plate 100 . When the height of the liquid leakage in the liquid storage phenomenon 30 reaches the position of the second liquid level sensor 60, it indicates that there is a large amount of liquid leakage in the liquid storage tank 30. At this time, the second liquid level sensor 60 sends a signal to the liquid leakage controller, The liquid leakage controller controls the opening of the second valve 41 to empty the cooling medium in the liquid storage tank 30 .

The liquid leakage detection device of the liquid cooling heat dissipation system provided by the embodiment of the present invention can collect the leaked liquid by setting the liquid storage tank, the first pipeline and the first liquid level sensor, so as to prevent the leaked liquid from falling on the main board of the server, causing The main board of the server is damaged; at the same time, when the amount of liquid leakage reaches the preset value, the first valve can be controlled to automatically open, and the cooling medium will be automatically replenished into the liquid cooling plate, ensuring the flow of cooling medium in the liquid cooling plate, thereby ensuring the safety of the liquid cooling plate. cooling capacity.

Further, in an embodiment of the present invention, the liquid leakage detection device of the liquid cooling heat dissipation system further includes an alarm, the alarm is electrically connected to the liquid leakage controller, and the alarm is used to send out an alarm when the cooling pipe 101 leaks. alarm.

Specifically, when liquid leakage occurs in the cooling pipe 101 , the liquid leakage sensing line 10 sends a signal to the liquid leakage controller, and the liquid leakage controller controls the alarm to sound an alarm to remind staff of the liquid leakage. Correspondingly, when liquid leakage occurs in the cooling pipe 101, the color sensor sends a signal to the liquid leakage controller, and the liquid leakage controller controls the alarm to issue an alarm. Optionally, in the embodiment of the present invention, the alarm can be a buzzer or an indicator light.

Further, in an embodiment of the present invention, the liquid leakage controller is provided with a dial switch, and the dial switch is used to adjust the response sensitivity of the liquid leakage controller. Specifically, the mesh size of the mesh structure of the liquid leakage induction line 10 is related to the sensitivity of liquid leakage monitoring. When a liquid leakage occurs, when the mesh size is small, the time for the liquid leakage controller to receive the liquid leakage signal is relatively short. , the response sensitivity is higher; when the grid size is larger, the time for the leakage controller to receive the leakage signal is longer, and the response sensitivity is lower.

In the embodiment of the present invention, the two ends of each liquid leakage sensing line 10 are respectively provided with a first joint and a second joint for use, so as to connect a plurality of liquid leakage sensing lines 10 in series.

Specifically, the cooling pipe 101 is used to connect the passages in the liquid cold plate 100. There are multiple cooling pipes 101, and each cooling pipe 101 is wrapped with a liquid leakage induction line 10, and the plurality of liquid leakage induction lines 10 The space is connected through the first joint and the second joint, wherein, when two liquid leakage sensing lines 10 are connected, the first joint of one liquid leakage sensing line 10 is connected to the second joint of the other liquid leakage sensing line 10, so as to Multiple liquid leakage sensing lines 10 are connected in series, so that the liquid leakage positions of multiple cooling pipes 101 can be detected through one liquid leakage controller.

In an embodiment of the present invention, the liquid leakage detection device further includes a cloud server, the cloud server is connected to the liquid leakage controller, and the liquid leakage controller sends the detected liquid leakage location information to the cloud server, and the staff can The APP remotely observes the liquid leakage information, and the staff can remotely control the opening of the first valve 21 according to the liquid leakage information and the temperature of each heating element in the server casing. Specifically, when the staff sees that the temperature inside the server housing is relatively high, and there is less liquid leakage in the liquid storage tank 30 at this time, and the liquid level sensor has not been triggered to send a signal to the liquid leakage controller, at this time, the staff can Remotely control the opening of the first valve 21 to increase the flow rate of the cooling medium in the liquid cold plate 100 , thereby increasing the cooling capacity of the liquid cold plate 100 .

The liquid leakage detection device of the liquid cooling and heat dissipation system provided by the embodiment of the present invention can be remotely controlled by the staff without on-site operation by setting up a cloud server, which realizes the intelligent control of the liquid leakage detection device and improves the control of the liquid leakage detection device. The convenience of the control of the liquid leakage detection device.

The embodiment of the present invention also provides a liquid cooling heat dissipation system, including: a liquid cold plate 100, a cooling pipe 101 and a liquid leakage detection device. The inside of the liquid cooling plate 100 is provided with a plurality of channels, and the plurality of channels are connected by cooling pipes 101 to form a communicating cooling pipeline. The liquid leakage sensing line 10 of the liquid leakage detection device is wrapped around the outside of the cooling pipe 101, and the liquid leakage sensing line 10 has a mesh structure. When the cooling tube 101 does not leak, the current value of the leakage sensing line 10 is a normal value; when the cooling tube 101 leaks, the liquid contacts the leakage sensing line 10, and the current value of the leakage sensing line 10 changes , when the current value of the liquid leakage sensing line 10 changes, the liquid leakage sensing line 10 sends a signal to the liquid leakage controller, and the liquid leakage controller can determine the location where the liquid leakage of the cooling pipe 101 occurs.

Specifically, the liquid leakage induction wire 10 is composed of a plurality of conductive polymers, the plurality of conductive polymers are woven into a network structure, and the resistance per unit length of each conductive polymer is a constant value. When no liquid leakage occurs in the cooling pipe 101, the current value between the two conductive polymers is a normal value. The space is short-circuited and the measured current value changes. According to Ohm’s law, the resistance of the leakage controller is related to the length. Through calculation, the position of the leakage induction line 10 in contact with the leakage can be calculated, and then determined. The location of the liquid leakage of the cooling pipe 101.

Further, the liquid leakage induction line 10 is arranged in a grid structure, which increases the contact range between the liquid leakage induction line 10 and the leakage liquid per unit area, thereby improving The detection accuracy of leakage is improved. Furthermore, the sensitivity of liquid leakage detection can be adjusted by adjusting the size of the grid in the network structure. Specifically, if the detection sensitivity of liquid leakage is to be improved, the size of each grid in the grid structure can be designed to be small Grids can be detected when liquid leakage occurs; if too high detection sensitivity is not required, the size of each grid in the grid structure can be designed as a large grid.

Further, in the embodiment of the present invention, the detection sensitivity of the liquid leakage sensing line 10 can be adjusted according to specific working conditions. If higher detection sensitivity is needed, the size of each grid in the network structure formed by the leakage sensing line 10 can be designed as a small grid, such as the size of each grid is 0.1mm, at this time, the cooling tube Once a liquid leak occurs in 101, the leaked liquid will contact the network structure, thereby detecting the liquid leakage, and then the liquid leakage controller can determine the location where the liquid leakage of the cooling pipe 101 occurs. If higher detection sensitivity is not required, the size of each grid in the network structure formed by the liquid leakage induction line 10 can be designed as a large grid, such as the size of each grid is 2mm, at this time, only when Only when the leakage area of the cooling pipe 101 is equal to or greater than 2mm will the leakage contact with the mesh structure, thereby detecting the leakage. Optionally, in the embodiment of the present invention, the side length of each grid in the network structure is greater than or equal to 0.1 mm and less than or equal to 2 mm.

Wrap the water-absorbing coating on the outside of the conductive polymer, and the water-absorbing coating can absorb a certain amount of leakage to prevent the leakage from falling on the main board of the server and causing a short circuit on the main board. Optionally, in the embodiment of the present invention, the water-absorbing covering layer may be made of nylon.

Further, in an embodiment of the present invention, the water-absorbing coating layer is coated with color developing powder, so that the water-absorbing coating layer changes color when exposed to water. Specifically, after the water-absorbing coating layer is prepared, the coloring powder can be applied to the water-absorbing coating layer, and the color will be displayed after the water-absorbing coating layer absorbs the leakage. Optionally, the color developing powder can be copper sulfate powder, which is white when it does not encounter liquid leakage, and turns blue after encountering liquid leakage.

After the liquid leakage induction line 10 fails, when the cooling pipe 101 leaks, the absorbing liquid of the water-absorbing coating layer leaks, and the chromogenic powder on the water-absorbing coating layer changes color. By sending a signal to the liquid leakage controller, the liquid leakage controller can know that the liquid leakage occurs in the cooling pipe 101 .

After the leakage occurs, it falls on the main board of the server, which can easily cause a short circuit of the main board. A liquid storage tank 30 is arranged outside the plurality of liquid leakage induction lines 10 on one side of the liquid cooling plate 100, so that the plurality of liquid leakage induction lines 10 on one side of the liquid cooling plate 100 All the liquid leakage induction lines 10 are located in a liquid storage tank 30. When the cooling pipe 101 leaks, the leaked liquid will fall into the liquid storage tank 30 to avoid damage to the main board of the server.

When the cooling medium leaks, the flow rate of the cooling medium in the liquid cold plate 100 decreases, which will reduce the cooling capacity of the liquid cold plate 100. At this time, it is necessary to replenish a certain amount of cooling medium in the liquid cold plate 100 in time to ensure The cooling capacity of the liquid cold plate 100. The liquid inlet pipe 20 is connected to one end of the first channel of the liquid cold plate 100 , so that the cooling medium can be replenished in time to ensure the cooling capacity of the liquid cold plate 100 .

Each liquid storage tank 30 is provided with a first liquid level sensor 50 for detecting the liquid level of the leakage liquid in the liquid storage tank 30 . When the liquid level of the liquid leakage in the liquid storage tank 30 reaches the preset position, the first liquid level sensor 50 sends a signal to the liquid leakage controller, and the liquid leakage controller controls the first valve 21 to open, and the cooling medium enters through the first pipeline 20 In the liquid cooling plate 100 , a cooling medium is supplemented in the liquid cooling plate 100 to ensure the cooling capacity of the liquid cooling plate 100 .

Further, each liquid storage tank 30 is also provided with a second liquid level sensor 60, the second liquid level sensor 60 is located above the first liquid level sensor 50, and each liquid storage tank 30 is also connected with a liquid outlet pipe 40, A second valve 41 is provided on the liquid outlet pipe 40 . When the height of the liquid leakage in the liquid storage tank 30 reaches the position of the first liquid level sensor 50, the first liquid level sensor 50 sends a signal to the liquid leakage controller, and the liquid leakage controller controls the opening of the first valve 21, and the cooling medium is supplied by The first pipe 20 enters into the liquid cold plate 100 to ensure the cooling capacity of the liquid cold plate 100 . When the height of the liquid leakage in the liquid storage phenomenon 30 reaches the position of the second liquid level sensor 60, it indicates that there is a large amount of liquid leakage in the liquid storage tank 30. At this time, the second liquid level sensor 60 sends a signal to the liquid leakage controller, The liquid leakage controller controls the opening of the second valve 41 to empty the cooling medium in the liquid storage tank 30 .

In the liquid cooling system provided by the embodiment of the present invention, a liquid leakage detection device is installed, and the liquid leakage sensing line is electrically connected to the liquid leakage controller. When liquid leakage occurs in the cooling pipe, the liquid leakage sensing line sends a signal to the liquid leakage controller. , the liquid leakage controller can calculate the short circuit position of the liquid leakage induction line, and then determine the leakage position of the cooling pipe. The liquid leakage induction line of the mesh structure increases the distance between the liquid leakage induction line and the leakage liquid per unit area The contact range improves the accuracy of leakage detection.

An embodiment of the present invention also provides a server, including a housing, a plurality of heating elements, and a liquid cooling system. The liquid cooling system and a plurality of heating elements are arranged in the casing, and the liquid cooling system is located below the plurality of heating elements.

Specifically, the housing of the server is provided with a plurality of heating elements, such as a CPU motherboard, a smart network card, etc., the upper surface of the liquid cooling plate 100 of the liquid cooling system is in contact with the lower surface of the heating elements, and the liquid cooling plate 100 is provided with A plurality of channels are connected through a plurality of cooling pipes 101 to form a cooling pipeline. After injecting a cooling medium into the channels, the cooling medium exchanges heat with the heating element, thereby cooling the heating element.

Further, when the cooling pipe 101 is damaged, the cooling medium will leak, and the leaked cooling medium contacts the liquid leakage induction line 10 in a mesh structure. When the cooling pipe 101 does not leak, the liquid leakage induction line 10 The current value of the current value is normal; when the cooling pipe 101 leaks, the liquid contacts the leakage sensing line 10, and the current value of the leakage sensing line 10 changes. When the current value of the leakage sensing line 10 changes, the leakage The liquid sensing line 10 sends a signal to the liquid leakage controller, and the liquid leakage controller can determine the location where the liquid leakage of the cooling pipe 101 occurs.

Specifically, the liquid leakage induction wire 10 is composed of a plurality of conductive polymers, the plurality of conductive polymers are woven into a network structure, and the resistance per unit length of each conductive polymer is a constant value. When no liquid leakage occurs in the cooling pipe 101, the current value between the two conductive polymers is a normal value. The space is short-circuited and the measured current value changes. According to Ohm’s law, the resistance of the leakage controller is related to the length. Through calculation, the position of the leakage induction line 10 in contact with the leakage can be calculated, and then determined. The location of the liquid leakage of the cooling pipe 101.

Further, the liquid leakage induction line 10 is arranged in a grid structure, which increases the contact range between the liquid leakage induction line 10 and the leakage liquid per unit area, thereby improving The detection accuracy of leakage is improved. Furthermore, the sensitivity of liquid leakage detection can be adjusted by adjusting the size of the grid in the network structure. Specifically, if the detection sensitivity of liquid leakage is to be improved, the size of each grid in the grid structure can be designed to be small Grids can be detected when liquid leakage occurs; if too high detection sensitivity is not required, the size of each grid in the grid structure can be designed as a large grid.

Further, in the embodiment of the present invention, the detection sensitivity of the liquid leakage sensing line 10 can be adjusted according to specific working conditions. If higher detection sensitivity is needed, the size of each grid in the network structure formed by the leakage sensing line 10 can be designed as a small grid, such as the size of each grid is 0.1mm, at this time, the cooling tube Once a liquid leak occurs in 101, the leaked liquid will contact the network structure, thereby detecting the liquid leakage, and then the liquid leakage controller can determine the location where the liquid leakage of the cooling pipe 101 occurs. If higher detection sensitivity is not required, the size of each grid in the network structure formed by the liquid leakage induction line 10 can be designed as a large grid, such as the size of each grid is 2mm, at this time, only when Only when the leakage area of the cooling pipe 101 is equal to or greater than 2mm will the leakage contact with the mesh structure, thereby detecting the leakage. Optionally, in the embodiment of the present invention, the side length of each grid in the network structure is greater than or equal to 0.1 mm and less than or equal to 2 mm.

Wrap the water-absorbing coating on the outside of the conductive polymer, and the water-absorbing coating can absorb a certain amount of leakage to prevent the leakage from falling on the main board of the server and causing a short circuit on the main board. Optionally, in the embodiment of the present invention, the water-absorbing covering layer may be made of nylon.

Further, in an embodiment of the present invention, the water-absorbing coating layer is coated with color developing powder, so that the water-absorbing coating layer changes color when exposed to water. Specifically, after the water-absorbing coating layer is prepared, the coloring powder can be applied to the water-absorbing coating layer, and the color will be displayed after the water-absorbing coating layer absorbs the leakage. Optionally, the color developing powder can be copper sulfate powder, which is white when it does not encounter liquid leakage, and turns blue after encountering liquid leakage.

After the liquid leakage induction line 10 fails, when the cooling pipe 101 leaks, the absorbing liquid of the water-absorbing coating layer leaks, and the chromogenic powder on the water-absorbing coating layer changes color. By sending a signal to the liquid leakage controller, the liquid leakage controller can know that the liquid leakage occurs in the cooling pipe 101 .

After the leakage occurs, it falls on the main board of the server, which can easily cause a short circuit of the main board. A liquid storage tank 30 is arranged outside the plurality of liquid leakage induction lines 10 on one side of the liquid cooling plate 100, so that the plurality of liquid leakage induction lines 10 on one side of the liquid cooling plate 100 All the liquid leakage induction lines 10 are located in a liquid storage tank 30. When the cooling pipe 101 leaks, the leaked liquid will fall into the liquid storage tank 30 to avoid damage to the main board of the server.

When the cooling medium leaks, the flow rate of the cooling medium in the liquid cold plate 100 decreases, which will reduce the cooling capacity of the liquid cold plate 100. At this time, it is necessary to replenish a certain amount of cooling medium in the liquid cold plate 100 in time to ensure The cooling capacity of the liquid cold plate 100. The liquid inlet pipe 20 is connected to one end of the first channel of the liquid cold plate 100 , so that the cooling medium can be replenished in time to ensure the cooling capacity of the liquid cold plate 100 .

Each liquid storage tank 30 is provided with a first liquid level sensor 50 for detecting the liquid level of the leakage liquid in the liquid storage tank 30 . When the liquid level of the liquid leakage in the liquid storage tank 30 reaches the preset position, the first liquid level sensor 50 sends a signal to the liquid leakage controller, and the liquid leakage controller controls the first valve 21 to open, and the cooling medium enters through the first pipeline 20 In the liquid cooling plate 100 , a cooling medium is supplemented in the liquid cooling plate 100 to ensure the cooling capacity of the liquid cooling plate 100 .

Further, each liquid storage tank 30 is also provided with a second liquid level sensor 60, the second liquid level sensor 60 is located above the first liquid level sensor 50, and each liquid storage tank 30 is also connected with a liquid outlet pipe 40, A second valve 41 is provided on the liquid outlet pipe 40 . When the height of the liquid leakage in the liquid storage tank 30 reaches the position of the first liquid level sensor 50, the first liquid level sensor 50 sends a signal to the liquid leakage controller, and the liquid leakage controller controls the opening of the first valve 21, and the cooling medium is supplied by The first pipe 20 enters into the liquid cold plate 100 to ensure the cooling capacity of the liquid cold plate 100 . When the height of the liquid leakage in the liquid storage phenomenon 30 reaches the position of the second liquid level sensor 60, it indicates that there is a large amount of liquid leakage in the liquid storage tank 30. At this time, the second liquid level sensor 60 sends a signal to the liquid leakage controller, The liquid leakage controller controls the opening of the second valve 41 to empty the cooling medium in the liquid storage tank 30 .

The server provided by the embodiment of the present invention can cool the heat-generating elements in the server casing by setting the liquid cooling system, and at the same time prevent the cooling medium from falling on the server main board, which will damage the main board, thereby improving the service life of the server.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. The utility model provides a liquid cooling system's weeping detection device which characterized in that includes:

the liquid leakage induction line is woven into a net structure and wraps the outside of a cooling pipe of the liquid cooling heat dissipation system, and comprises a plurality of conductive polymers which are woven into the net structure; under the condition that the cooling pipe does not leak liquid, the current value between the two conductive polymers is a normal value; under the condition that the cooling pipe leaks, the current value between the two conductive polymers changes;

and the leakage controller is electrically connected with the leakage induction line and used for judging the position of the cooling pipe where leakage occurs according to the signal sent by the leakage induction line.

2. The apparatus of claim 1, wherein the side length of each mesh in the mesh structure is greater than or equal to 0.1mm and less than or equal to 2mm.

3. The liquid-cooled heat dissipation system leakage detection device of claim 1, wherein the leakage sensing line further comprises a water-absorbing coating layer, and the water-absorbing coating layer is wrapped outside the conductive polymer.

4. The liquid-cooled heat dissipation system leakage detection device as claimed in claim 3, wherein the water-absorbing coating layer is coated with a color developing powder so that the water-absorbing coating layer changes color after encountering water.

5. The liquid leakage detection device of the liquid cooling heat dissipation system of claim 4, further comprising a plurality of color sensors, wherein the plurality of color sensors are disposed on the liquid cooling heat dissipation system, the color sensors are used for monitoring color changes of the water absorption coating layer, and the color sensors are electrically connected to the leakage controller.

6. The apparatus of claim 1, further comprising:

the liquid inlet pipe is used for being connected with one end of the first channel in the liquid cooling plate;

a pair of liquid reserve tank, two the liquid reserve tank set up respectively in the both sides of liquid cooling board, every the liquid reserve tank cover is established a plurality of liquid cooling board one side the outside of weeping response line, the liquid reserve tank is used for collecting the weeping.

7. The apparatus of claim 6, further comprising:

the first valve is arranged on the liquid inlet pipe and is electrically connected with the liquid leakage controller;

a plurality of first level sensor, every all be provided with one in the liquid reserve tank first level sensor, first level sensor with hourglass liquid controller electric connection.

8. The apparatus of claim 7, further comprising:

the liquid level controller comprises a plurality of liquid level sensors, a liquid level controller and a liquid level controller, wherein the liquid level controller is electrically connected with the liquid level sensors;

and the liquid storage box is connected with one liquid outlet pipe, and each liquid outlet pipe is provided with a second valve.

9. A liquid cooling heat dissipation system comprises a liquid cooling plate, a cooling pipe and the leakage detection device as claimed in any one of claims 1 to 9, wherein a plurality of channels are formed in the liquid cooling plate and connected through the cooling pipe to form a communicated cooling pipeline, and a leakage induction line of the leakage detection device is wrapped outside the cooling pipe in a net structure.

10. A server, comprising a housing, a plurality of heat generating components, and the liquid-cooled heat dissipating system of claim 9, wherein the liquid-cooled heat dissipating system and the plurality of heat generating components are disposed in the housing, and wherein the liquid-cooled heat dissipating system is disposed under the plurality of heat generating components.

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