TWI835298B - Leak detecting module and leak detecting device - Google Patents

Abstract

A leak detecting module includes a leak detecting device, at least one monitoring device and at least one main path. The leak detecting device includes a hub and a plurality of leak detecting branches. The leak detecting branches are in parallel electrical connection with the hub. The main path connects the hub with the monitoring device.

Description

Liquid leakage detection module and liquid leakage detection device

The invention relates to a liquid leakage detection module and a liquid leakage detection device, in particular to a liquid leakage detection module and a liquid leakage detection device with a hub.

In order to effectively remove the heat generated by the CPU and graphics card in the server, a common approach is to use a liquid cooling system, with multiple liquid cooling units installed in the CPU and graphics card connected in series or in parallel through pipelines. board to take away the heat generated by the CPU and graphics card.

However, coolant may easily leak out from the connection between the two pipelines or the connection between the pipeline and the liquid cooling plate, causing damage to the server. In order to detect the occurrence of liquid leakage, a common practice is to lay a liquid leakage detection rope for monitoring. However, due to the complexity and long length of the liquid cooling circuit formed by the pipelines and the liquid cooling plate, the length of the liquid leakage detection rope also needs to be very long, and the laying operation is very difficult and easy during the laying process. Damage to the leakage detection rope will lead to an increase in undesirable situations such as insensitive alarms or false alarms on the leakage detection rope.

The present invention provides a liquid leakage detection module and a liquid leakage detection device, which allows the liquid leakage detection rope to be laid in a simple manner and avoids damage to the liquid leakage detection rope. And maintain the accuracy of leakage detection.

A liquid leakage detection module disclosed in one embodiment of the present invention includes a liquid leakage detection device, at least one monitoring device and at least one main circuit. The liquid leakage detection device includes a hub and multiple liquid leakage detection branches. These liquid leakage detection branches are electrically connected to the hub in a parallel manner. The main circuit electrically connects the hub to the monitoring device.

Another embodiment of the present invention discloses a liquid leakage detection device. The liquid leakage detection device includes a hub and multiple liquid leakage detection branches. These liquid leakage detection branches are electrically connected to the hub in a parallel manner.

According to the liquid leakage detection module and liquid leakage detection device disclosed in the above embodiments, these liquid leakage detection branches are electrically connected to the hub in a parallel manner, and are respectively provided in the liquid supply pipeline and the liquid return pipeline. setting, the total length required for leakage detection can be shared by these leakage detection branches to reduce the length of a single leakage detection branch, thereby reducing the total length of the overall leakage detection branch, so these leakage detection branches can be reduced It reduces the cost and difficulty of laying liquid detection branch circuits, and can prevent these liquid leakage detection branch circuits from being damaged during the laying process, while maintaining the accuracy of liquid leakage detection.

The above description of the content of the present invention and the following description of the embodiments are used to demonstrate and explain the principles of the present invention, and to provide further explanation of the patent application scope of the present invention.

1: Liquid cooling system

10: Liquid cooling module

11: Liquid cooling components

111:The first liquid cooling plate

1111,1112: Connector

1113:Liquid storage tank

112:Second liquid cooling plate

1121,1122: Connector

113:Third liquid cooling plate

1131,1132: Connector

114,115:Connecting pipelines

116:Liquid supply line

117: Liquid return line

12: Diverter

121: Shunt chamber

122:Confluence chamber

13: Main liquid supply pipeline

14: Main liquid return pipeline

20,20a: Liquid leakage detection module

21: Liquid leakage detection device

211,211a: hub

212, 212a: Leakage detection branch circuit

2121,2121a:Absorbent rope

2122, 2122a: first conductor

2123, 2123a: Second wire

2124:Resistor

2125:Insulation parts

22:Monitoring device

23:Main road

FIG. 1 is a schematic three-dimensional view of a liquid leakage detection module and a liquid cooling system to which it is applied according to the first embodiment of the present invention.

Figure 2 is a three-dimensional schematic view of the liquid cooling module of Figure 1.

Figure 3 is a schematic three-dimensional view of the water separator in Figure 2.

FIG. 4 is a perspective view of the first liquid cooling plate of FIG. 2 .

FIG. 5 is a three-dimensional schematic diagram of the liquid leakage detection module of FIG. 1 .

FIG. 6 is a conceptual diagram of the liquid leakage detection module of FIG. 5 .

FIG. 7 is a partial conceptual diagram of a liquid leakage detection module disclosed according to a second embodiment of the present invention.

See Figure 1. FIG. 1 is a schematic three-dimensional view of a liquid leakage detection module and a liquid cooling system to which it is applied according to the first embodiment of the present invention.

In this embodiment, the liquid leakage detection module 20 is suitable for a liquid cooling system 1 of the server, and the liquid cooling system 1 is used to dissipate heat from multiple heat sources (not shown), where these heat sources include multiple central processing units. and multiple graphics cards. The liquid cooling system 1 includes a liquid cooling module 10 .

Next, please refer to Figures 2 to 4. Figure 2 is a three-dimensional schematic view of the liquid cooling module of Figure 1. Figure 3 is a schematic three-dimensional view of the water separator in Figure 2. FIG. 4 is a perspective view of the first liquid cooling plate of FIG. 2 .

The liquid cooling module 10 includes two liquid cooling components 11 . In addition, the liquid cooling module 10 may also include a diverter 12 , a main liquid supply pipeline 13 and a main liquid return pipeline 14 .

The two liquid cooling components 11 have the same structure, so only one of the liquid cooling components 11 is introduced in detail below. The liquid cooling assembly 11 includes a first liquid cooling plate 111, a second liquid cooling plate 112, a third liquid cooling plate 113, two connecting pipes 114, 115, a liquid supply pipe 116 and a liquid return pipe 117 . The first liquid cooling plate 111 is a central processing unit The second liquid cooling plate 112 and the third liquid cooling plate 113 are the liquid cooling plates of the display card. The first liquid cooling plate 111 , the second liquid cooling plate 112 and the third liquid cooling plate 113 are connected in series through two connecting pipes 114 and 115 . Specifically, the first liquid cooling plate 111 has two joints 1111 and 1112, the second liquid cooling plate 112 has two joints 1121 and 1122, and the third liquid cooling plate 113 has two joints 1131 and 1132. The joint 1111 of the first liquid cooling plate 111 is connected to the joint 1121 of the second liquid cooling plate 112 through its connecting pipe 114, and the joint 1122 of the second liquid cooling plate 112 is connected to the third liquid cooling plate 113 through the connecting pipe 115. The connector 1131. One end of the liquid supply pipeline 116 and one end of the liquid return pipeline 117 are respectively connected to the joint 1112 of the first liquid cooling plate 111 and the joint 1132 of the third liquid cooling plate 113 .

In this embodiment, the first liquid cooling plate 111 may also have two liquid storage tanks 1113. The two liquid storage tanks 1113 respectively correspond to the two joints 1111 and 1112 to receive the cooling liquid leaking from the joints 1111 and 1112 to delay the cooling. The time it takes for coolant to drip onto the motherboard (not shown) or other electronic components. It should be noted that the reservoir 1113 is an optional structural configuration. In other embodiments, the first liquid cooling plate 111 may have no liquid storage tank 1113 .

The diverter 12 has a diverting chamber 121 and a converging chamber 122 that are separated from each other. The two liquid supply pipelines 116 and the main liquid supply pipeline 13 of the two liquid cooling components 11 are connected to the branch chamber 121 of the distributor 12 , and the two liquid return pipelines 117 and the main liquid return pipeline 14 of the two liquid cooling components 11 are connected to The flow chamber 122 of the diverter 12 . The main liquid supply pipeline 13 is connected to a pump (not shown), and the main liquid return pipeline 14 is connected to a heat exchanger (not shown), for example, and the pump is connected to the heat exchanger, so that the two liquid cooling components 11 , diverter 12, main liquid supply pipeline 13, main liquid return pipeline 14, pump and heat exchanger common A liquid cooling cycle is formed, in which the pump provides power for the cooling liquid to flow in the liquid cooling cycle.

The cooling liquid circulation process of the liquid cooling system 1 will be described below. The cooling liquid flows through the main liquid supply pipeline 13 to the branching chamber 121 of the flow divider 12 for branching. Then, the coolant is divided into two paths and flows through the two liquid supply pipes 116 to the two first liquid cooling plates 111 to absorb the heat generated by the CPU. Then, the cooling liquid flows to the second liquid cooling plate 112 and the third liquid cooling plate 113 through the connecting pipes 114 and 115 in sequence, and absorbs the heat generated by these graphics cards. Then, the coolant flows through the secondary liquid return pipe 117 to the converging chamber 122 of the diverter 12 to merge, and then flows through the main liquid return pipe 14 to the radiator for cooling. In this way, the coolant completes one liquid cooling cycle, and then repeats the next liquid cooling cycle.

Next, please refer to Figure 5 and Figure 6. FIG. 5 is a three-dimensional schematic diagram of the liquid leakage detection module of FIG. 1 . FIG. 6 is a conceptual diagram of the liquid leakage detection module of FIG. 5 .

The liquid leakage detection module 20 includes a liquid leakage detection device 21 , two monitoring devices 22 and two main circuits 23 .

The liquid leakage detection device 21 includes a hub 211 and a plurality of liquid leakage detection branches 212 . These liquid leakage detection branches 212 are electrically connected to the hub 211 in a parallel manner. The length of two of the leakage detection branches 212 is about 800 mm, and they are respectively provided in the main liquid supply pipeline 13 and the main liquid return pipeline 14 . The other two liquid leakage detection branches 212 are approximately 800 mm in length and are respectively provided along the liquid supply pipeline 116, the first liquid cooling plate 111 and the connecting pipeline 114. The other two liquid leakage detection branches 212 are approximately 1000 mm in length and are respectively provided along the connecting pipe 115 and the liquid return pipe 117 .

The structures of these liquid leakage detection branches 212 are similar, so only details are given below. One of the leak detection branches 212 is described. The liquid leakage detection branch 212 is a liquid leakage detection rope. Each of the liquid leakage detection branches 212 includes a water-absorbing rope 2121, a first wire 2122, a second wire 2123 and a resistor 2124. The first wire 2122 and the second wire 2123 are arranged on the water-absorbing rope 2121. One end of the first wire 2122 and one end of the second wire 2123 are respectively connected to the positive and negative electrodes of the hub 211 by welding, and the other end of the first wire 2122 One end is connected to the other end of the second wire 2123 through a resistor 2124. The first wire 2122, the second wire 2123, the resistor 2124 and the hub 211 together form a closed loop.

In addition, the liquid leakage detection branch 212 further includes a plurality of insulating members 2125. These insulating members 2125 are respectively disposed at two opposite ends of the first conductor 2122 and two opposite ends of the second conductor 2123 to prevent the first conductor 2122 and the second conductor from being damaged. The wires 2123 come into contact and a short circuit occurs. It should be noted that the insulator 2125 is not an optional component. In other embodiments, the liquid leakage detection branch may have no insulating component.

In this embodiment, the two main roads 23 connect the two monitoring devices 22 to the hub 211 respectively. When the water-absorbing rope 2121 of one of the aforementioned liquid leakage detection branches 212 absorbs the leaked coolant, the first wire 2122 and the second wire 2123 are electrically connected. At this time, the monitoring device 22 determines that there is current leakage in the pipeline through the change in the resistance value of the entire circuit, and issues a leakage alarm to remind maintenance personnel to perform maintenance. For example, assuming that the resistance value of each liquid leakage detection branch 212 is R, when no liquid leakage occurs, the resistance value of the entire circuit is R/6. When the water-absorbing rope 2121 of one of the leakage detection branches 212 absorbs the leaked coolant, the resistance value R of the leakage detection branch 212 becomes close to 0, causing the resistance value of the entire circuit to suddenly drop. The value is close to 0, so the monitoring device 22 can determine the occurrence of liquid leakage based on this.

In this embodiment, by setting these liquid leakage detection branches 212 to be electrically connected to the hub 211 in a parallel manner and respectively disposed in the liquid supply pipeline 116 and the liquid return pipeline 117, it is possible to detect liquid leakage if necessary. The total length of the detection is shared by these leakage detection branches 212 to reduce the length of a single leakage detection branch 212 and thereby reduce the total length of the overall leakage detection branch 212. Therefore, these leakage detection branches 212 can be reduced The laying cost and laying difficulty are reduced, and the leakage detection branch circuits 212 can be prevented from being damaged during the laying process, while maintaining the accuracy of leakage detection.

In addition, these liquid leakage detection branches 212 are provided on the liquid cooling plate and/or pipelines, occupying no additional space, and will not affect the spatial layout of other components of the server.

In this embodiment, the liquid leakage detection module 20 includes two monitoring devices 22, whereby the two monitoring devices 22 can jointly determine whether liquid leakage occurs. It should be noted that the number of monitoring devices 22 is not limited to two, and the liquid leakage detection module may have only one monitoring device.

In this embodiment, the cooling liquid is circulated in the two first liquid cooling plates, the two second liquid cooling plates and the two third liquid cooling plates through series and parallel pipes. Under the condition of the same power consumption, The liquid supply volume and energy supply are minimal, reducing the operating energy consumption and cost of the system.

It should be noted that the number of liquid cooling components 11 is not limited to two. In other embodiments, there may be only one liquid cooling component. Under such a configuration, the flow divider, the main liquid supply pipeline and the main liquid return pipeline of the liquid cooling module 10 can be omitted, and the supply of the liquid cooling module 10 can be omitted. The liquid pipeline and return liquid pipeline can be directly connected to the pump and heat exchanger respectively.

In addition, the number of liquid cooling plates of each liquid cooling assembly 11 is not limited to three, and can be increased or decreased according to actual needs.

In this embodiment, the other end of the first conductor 2122 and the other end of the second conductor 2123 are connected through the resistor 2124, so that the first conductor 2122, the second conductor 2123, the resistor 2124 and the hub 211 together form a closed The setting of the circuit can determine whether the leakage detection branch 212 is damaged. For example, according to Ohm's law, assume that the resistance value of each liquid leakage detection branch 212 is R, and the total resistance value of the entire circuit is approximately R/6 (wherein, the resistance values of the first conductor 2122 and the second conductor 2123 too small to be ignored). If the resistance value of the entire circuit is detected to be R/5, it means that one of the leakage detection branches 212 is damaged or disconnected, and so on, so that it can be easily detected whether the leakage detection branch 212 is normal.

It should be noted that the liquid leakage detection branch 212 is not limited to including the resistor 2124 . Please refer to FIG. 7 . FIG. 7 is a partial conceptual diagram of a liquid leakage detection module disclosed according to a second embodiment of the present invention.

In this embodiment, the liquid leakage detection module 20a is similar to the liquid leakage detection module 20 in the previous embodiment. The difference between the two mainly lies in the liquid leakage detection support of the liquid leakage detection module 20a in this embodiment. The path 212a does not include a resistor, and the first conductor 2122a, the second conductor 2123a and the hub 211a of the liquid leakage detection branch 212a together form an open loop.

Under such a configuration, when the water-absorbing rope 2121a of one of the leakage detection branches 212a absorbs the leaked coolant, the first conductor 2122a and the second conductor 2123a electrical conduction. At this time, the monitoring device (as shown in Figure 5) can determine that there is leakage in the pipeline through the change in the resistance value of the entire circuit, and issue a leakage alarm to remind maintenance personnel to perform maintenance. Specifically, before the first conductor 2122a and the second conductor 2123a are not electrically connected, the resistance value of each liquid leakage detection branch 212a is infinite, and the resistance value of the entire circuit is infinite. When the first wire 2122a and the second wire 2123a are electrically connected, the resistance value of the coolant, the first wire 2122a and the second wire 2123a is very small, so the resistance value of the liquid leakage detection branch 212a changes from infinite to close to 0, so the resistance value of the overall circuit plummets to close to 0. At this time, the monitoring device can determine the occurrence of liquid leakage.

According to the liquid leakage detection module and liquid leakage detection device disclosed in the above embodiments, these liquid leakage detection branches are electrically connected to the hub in a parallel manner, and are respectively provided in the liquid supply pipeline and the liquid return pipeline. setting, the total length required for leakage detection can be shared by these leakage detection branches to reduce the length of a single leakage detection branch, thereby reducing the total length of the overall leakage detection branch, so these leakage detection branches can be reduced It reduces the cost and difficulty of laying liquid detection branch circuits, and can prevent these liquid leakage detection branch circuits from being damaged during the laying process, while maintaining the accuracy of liquid leakage detection.

Although the present invention has been disclosed in the foregoing preferred embodiments, they are not intended to limit the present invention. Anyone skilled in the similar art can make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention is The scope of patent protection for an invention shall be determined by the scope of the patent application attached to this specification.

1: Liquid cooling system

10: Liquid cooling module

11: Liquid cooling components

111:The first liquid cooling plate

112:Second liquid cooling plate

113:Third liquid cooling plate

114,115:Connecting pipelines

116:Liquid supply line

117: Liquid return line

12: Diverter

13: Main liquid supply pipeline

14: Main liquid return pipeline

20: Liquid leakage detection module

212: Leak detection branch circuit

22:Monitoring device

23:Main road

Claims (10)

A liquid leakage detection module, including: a liquid leakage detection device, including: a hub; and a plurality of liquid leakage detection branches, the liquid leakage detection branch circuits are electrically connected to the hub in a parallel manner; at least one monitoring device; and at least one main circuit electrically connecting the hub to the at least one monitoring device. The liquid leakage detection module as claimed in claim 1, wherein the liquid leakage detection branches are liquid leakage detection ropes. The liquid leakage detection module of claim 1, wherein each liquid leakage detection branch includes a water absorption rope, a first conductor, a second conductor and a resistor, and the first conductor and the second conductor are arranged In the water-absorbing rope, one end of the first wire and one end of the second wire are connected to the positive and negative electrodes of the hub respectively, and the other end of the first wire and the other end of the second wire are connected through the resistor, and The first wire, the second wire, the resistor and the hub together form a closed loop. The liquid leakage detection module of claim 1, wherein each of the liquid leakage detection branches includes a water-absorbing rope, a first wire, and a second wire, and the first wire and the second wire are arranged on the water-absorbing rope. , one end of the first conductor and one end of the second conductor are respectively connected to the positive electrode and the negative electrode of the hub, and the first conductor, the second conductor and the hub together form an open loop. The liquid leakage detection module of claim 3 or 4, wherein one end of the first wire and one end of the second wire are respectively connected to the positive electrode and the negative electrode of the hub through welding. The liquid leakage detection module of claim 3 or 4, wherein each liquid leakage detection branch further includes a plurality of insulating members, and the insulating members are respectively disposed at opposite ends of the first conductor and the second conductor. The opposite ends of. The liquid leakage detection module of claim 1, wherein the number of the at least one monitoring device and the at least one main channel is two, and the two main channels connect the two monitoring devices to the hub respectively. A liquid leakage detection device includes: a hub; and a plurality of liquid leakage detection branches, which are electrically connected to the hub in a parallel manner. The liquid leakage detection device of claim 8, wherein each of the liquid leakage detection branches includes a water-absorbing rope, a first conductor, a second conductor and a resistor, and the first conductor and the second conductor are arranged on The water-absorbing rope, one end of the first conductor and one end of the second conductor are respectively connected to the positive and negative electrodes of the hub, the other end of the first conductor and the other end of the second conductor are connected through the resistor, and the third A conductor, the second conductor, the resistor and the hub together form a closed loop. The liquid leakage detection device of claim 8, wherein each liquid leakage detection branch includes a water-absorbing rope, a first wire, and a second wire, and the first wire and the second wire are arranged on the water-absorbing rope, One end of the first conductor and one end of the second conductor are respectively connected to the positive electrode and the negative electrode of the hub, and the first conductor, the second conductor and the hub together form an open loop.

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