A liquid leakage detection tube, a liquid leakage detection device, a liquid cooling system, a data center

Abstract

The present invention belongs to the technical field of leakage detection of server water-cooling pipes, and specifically provides a leakage detection pipe, a leakage detection device, a liquid cooling system, and a data center. The device includes an induction coil, a power supply, a water inlet pipe and a water outlet pipe respectively connected to a heat dissipation device; the water inlet pipe and the water outlet pipe are respectively leakage detection pipes; the leakage detection pipe includes a water pipe, the outer wall of the water pipe is coated with absorbent cotton, and a hose is coated on the outer layer of the absorbent cotton, and a bare metal wire is arranged between the hose and the absorbent cotton; the bare metal wire is connected to the negative electrode of the power supply; electrodes are arranged on both the water inlet pipe and the water outlet pipe, and the electrodes of the water inlet pipe and the electrodes of the water outlet pipe are connected to both ends of the power supply through a cable to form a power supply loop; the induction coil is sleeved on the water inlet pipe and the water outlet pipe; the induction coil is connected to a controller through a current detection circuit; the controller outputs a control signal according to the detection signal of the current detection circuit to control the system to stop working. This can prevent water leakage from dripping onto the main board and causing short circuits to damage circuit components.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid leakage detection of server water cooling pipes, and specifically provides a liquid leakage detection pipe, a liquid leakage detection device, a liquid cooling system, and a data center. Background Art

[0002] With the booming development of cloud computing and big data, the explosive growth of data volume has promoted the rapid development of the data center market. The rapid development of electronic communication technology has enabled electronic components and chips to develop towards high integration, high computing speed, and miniaturization, resulting in a significant improvement in the computing speed and performance of servers. At the same time, the heat transfer density on the surface of each component has increased rapidly, so the heat generation has also increased sharply, and the heat dissipation problem needs to be solved urgently.

[0003] Existing heat dissipation methods are mainly divided into two major types: air cooling and liquid cooling. The air cooling method is an indirect contact type of heat dissipation. The traditional server heat dissipation method is to use air cooling, where a fan is used to take away the heat generated by the heat-generating components inside the chassis. This method has high cooling power consumption, loud fan noise, low heat dissipation efficiency, low equipment density, and since the thermal conductivity of air is much lower than that of the coolant, it cannot meet the heat dissipation requirements under high heat generation. In addition, it also increases the system power consumption. That is, the current air cooling system has already approached its economic and effective refrigeration limit. Therefore, for servers with high integration and high heat generation, a liquid cooling method with higher refrigeration efficiency can be used for heat dissipation. Although the liquid cooling method has many advantages, it also has the risk of liquid leakage.

[0004] Existing liquid leakage detection solutions generally require installing a dedicated liquid leakage detection control board inside the server chassis to detect whether the pipeline leaks. Adding an additional liquid leakage detection board to the system increases the types and quantities of cables, which is not conducive to installation, and also increases the system cost and unreliability, adding difficulties in cost control and structural design, etc. Moreover, when liquid leakage occurs, the leaked liquid cannot be absorbed in time, and when the leaked liquid seeps into the circuit, it will cause a short circuit and damage the electronic components. Summary of the Invention

[0005] Existing liquid leakage detection solutions generally require installing a dedicated liquid leakage detection control board inside the server chassis to detect whether the pipeline leaks. Adding an additional liquid leakage detection board to the system increases the types and quantities of cables, which is not conducive to installation, and also increases the system cost and unreliability, adding difficulties in cost control and structural design, etc. Moreover, when liquid leakage occurs, the leaked liquid cannot be absorbed in time, and when the leaked liquid seeps into the circuit, it will cause a short circuit and damage the electronic components. The present invention provides a liquid leakage detection pipe, a liquid leakage detection device, a liquid cooling system, and a data center.

[0006] In a first aspect, the technical solution of the present invention provides a liquid leakage detection tube, which includes a water pipe. The outer wall of the water pipe is coated with absorbent cotton, and a hose is coated outside the absorbent cotton. An exposed metal wire is arranged between the hose and the absorbent cotton.

[0007] When the liquid leakage detection tube is in use, the function of the absorbent cotton is to promptly absorb the leaked water from the water pipe to prevent the leaked water from damaging the server motherboard. The purpose of wrapping the absorbent cotton with a hose outside is to prevent the water in the absorbent cotton from damaging the server motherboard due to excessive water absorption. One end of the exposed metal wire is grounded. When the water in the water pipe is electrified, if there is a water leakage phenomenon, the exposed metal wire is connected to the water leakage. One end of the exposed metal wire is grounded, so that there is an electric current in the exposed metal wire. The existence of the water leakage phenomenon is judged by detecting the electric current in the exposed metal wire.

[0008] As a preference of the technical solution of the present invention, the exposed metal wire is attached to the inner wall of the hose.

[0009] As a preference of the technical solution of the present invention, the number of the exposed metal wires is four, and the four exposed metal wires are attached to the inner wall of the hose at equal intervals. Since the cross-section of the water pipe is circular, in order to more comprehensively detect the water leakage phenomenon of the water pipe, the exposed metal wires are evenly distributed on the inner wall of the hose.

[0010] In a second aspect, the technical solution of the present invention further provides a water-cooled pipe liquid leakage detection device, which is applied to a heat dissipation system. The system includes a heat dissipation device. The water-cooled pipe includes an inlet pipe and an outlet pipe respectively connected to the heat dissipation device; the detection device includes an induction coil and a power supply.

[0011] The inlet pipe and the outlet pipe are respectively liquid leakage detection tubes;

[0012] The liquid leakage detection tube includes a water pipe. The outer wall of the water pipe is coated with absorbent cotton, and a hose is coated outside the absorbent cotton. An exposed metal wire is arranged between the hose and the absorbent cotton.

[0013] When the liquid leakage detection tube is in use, the function of the absorbent cotton is to promptly absorb the leaked water from the water pipe to prevent the leaked water from damaging the server motherboard. The purpose of wrapping the absorbent cotton with a hose outside is to prevent the water in the absorbent cotton from damaging the server motherboard due to excessive water absorption. One end of the exposed metal wire is grounded. When the water in the water pipe is electrified, if there is a water leakage phenomenon, the exposed metal wire is connected to the water leakage. One end of the exposed metal wire is grounded, so that there is an electric current in the exposed metal wire. The existence of the water leakage phenomenon is judged by detecting the electric current in the exposed metal wire.

[0014] The exposed metal wire is connected to the negative electrode of the power supply;

[0015] Electrodes are arranged on both the inlet pipe and the outlet pipe. When there is water in the inlet pipe and the outlet pipe, the electrodes are in contact with the water in the corresponding pipe;

[0016] The electrodes of the water inlet pipe and the electrodes of the water outlet pipe are connected to both ends of the power supply through cables to form a power supply circuit;

[0017] The induction coil is sleeved on the water inlet pipe and the water outlet pipe;

[0018] The induction coil is connected to a controller through a current detection circuit;

[0019] The controller is used to output a control signal to the outside according to the detection signal of the current detection circuit to drive the driving mechanism for the water circulation of the water cooling pipe.

[0020] As a preference of the technical solution of the present invention, the bare metal wire is attached to the wall of the hose.

[0021] As a preference of the technical solution of the present invention, the number of bare metal wires is four, and the four bare metal wires are attached to the wall of the hose at equal intervals. Since the cross-section of the water pipe is circular, in order to more comprehensively detect the water leakage of the water pipe, the bare metal wires are evenly distributed on the wall of the hose.

[0022] As a preference of the technical solution of the present invention, the electrode of the water inlet pipe is arranged at the water inlet position of the water inlet pipe, and the electrode of the water outlet pipe is arranged at the water outlet position.

[0023] As a preference of the technical solution of the present invention, the electrode of the water inlet pipe is connected to the positive pole of the power supply through a current-limiting resistor;

[0024] The electrode of the water outlet pipe is connected to the negative pole of the power supply through a cable.

[0025] As a preference of the technical solution of the present invention, the current detection circuit includes a current sensor, and the current sensor is connected to the controller.

[0026] As a preference of the technical solution of the present invention, the induction coil sleeve is arranged on the water inlet pipe and the water outlet pipe near one end of the heat dissipation device.

[0027] In the third aspect, the technical solution of the present invention further provides a liquid cooling system, including a heat dissipation device and a water cooling pipe leakage detection device connected to the heat dissipation device;

[0028] The water cooling pipe leakage detection device is applied to a heat dissipation system, the system includes a heat dissipation device, the water cooling pipe leakage detection device includes a water inlet pipe and a water outlet pipe respectively connected to the heat dissipation device; the detection device includes an induction coil and a power supply;

[0029] The water inlet pipe and the water outlet pipe are respectively leakage detection pipes;

[0030] The leakage detection pipe includes a water pipe, the outer wall of the water pipe is coated with absorbent cotton, and a hose is coated on the outer layer of the absorbent cotton, and a bare metal wire is arranged between the hose and the absorbent cotton.

[0031] The bare metal wire is connected to the negative pole of the power supply;

[0032] Both the water inlet pipe and the water outlet pipe are provided with electrodes. When there is water in the water inlet pipe and the water outlet pipe, the electrodes are in contact with the water in the corresponding pipe;

[0033] The electrode of the water inlet pipe and the electrode of the water outlet pipe are connected to both ends of the power supply through a cable to form a power supply loop;

[0034] The induction coil is sleeved on the water inlet pipe and the water outlet pipe;

[0035] The induction coil is connected to a controller through a current detection circuit;

[0036] The controller is used to output a control signal to the outside according to the detection signal of the current detection circuit to drive the driving mechanism for the water circulation of the water-cooled pipe.

[0037] When the liquid leakage detection pipe is in use, the function of the absorbent cotton is to promptly absorb the leaked water of the water pipe to prevent the damage of the leaked water to the server motherboard. The purpose of wrapping the outside of the absorbent cotton with a hose is to prevent the water in the absorbent cotton from damaging the server motherboard due to excessive water absorption. One end of the bare metal wire is grounded. When the water in the water pipe is electrified, if there is a water leakage phenomenon, the bare metal wire is connected to the water leakage. One end of the bare metal wire is grounded. In this way, there is current in the bare metal wire, and the existence of the water leakage phenomenon is judged by detecting the current in the bare metal wire.

[0038] As a preference of the technical solution of the present invention, the induction coil sleeve is arranged on the water inlet pipe and the water outlet pipe close to one end of the heat dissipation device.

[0039] A water pump is arranged on the water inlet pipe or the water outlet pipe;

[0040] The water pump is connected to the controller; when the controller judges that there is liquid leakage in the water-cooled pipe according to the detection signal of the current detection circuit, it outputs a control signal to control the water pump to stop working.

[0041] As a preference of the technical solution of the present invention, the bare metal wire is attached to the wall of the hose.

[0042] As a preference of the technical solution of the present invention, the number of the bare metal wires is four, and the four bare metal wires are attached to the wall of the hose at equal intervals. Since the cross-section of the water pipe is circular, in order to more comprehensively detect the water leakage phenomenon of the water pipe, the bare metal wires are evenly distributed on the wall of the hose.

[0043] As a preference of the technical solution of the present invention, the electrode of the water inlet pipe is arranged at the water inlet position of the water inlet pipe, and the electrode of the water outlet pipe is arranged at the water outlet position.

[0044] As a preference of the technical solution of the present invention, the electrode of the water inlet pipe is connected to the positive pole of the power supply through a current-limiting resistor;

[0045] The electrode of the outlet pipe is connected to the negative pole of the power supply through a cable.

[0046] As a preference of the technical solution of the present invention, the current detection circuit includes a current sensor, and the current sensor is connected to the controller.

[0047] The working process of the whole system is as follows: turn on the power supply to energize the water in the inlet pipe and the outlet pipe. Under normal circumstances, since there is no water leakage, the current magnitudes in the inlet pipe and the outlet pipe are equal and opposite in direction, and no induced current will be generated in the induction coil. When water leakage occurs in the water pipe, the seeping water in the water pipe will be absorbed by the absorbent cotton, thus conducting with the bare metal wire outside the absorbent cotton, generating a leakage current. The current magnitudes in the inlet pipe and the outlet pipe are inconsistent, and the induction coil sleeved outside the inlet pipe and the outlet pipe will generate an induced current. After the induced current is collected by the current detection circuit and transmitted to the controller to detect the generation of the induced current, the controller further controls the action mechanism to cut off the power supply of the server system and controls the water pump to stop supplying water, etc.

[0048] In a fourth aspect, the technical solution of the present invention further provides a data center, including a server and a liquid cooling system. The liquid cooling system includes a heat dissipation device and a water leakage detection device for the water cooling pipe. The water leakage detection device for the water cooling pipe includes an inlet pipe and an outlet pipe respectively connected to the heat dissipation device; the detection device includes an induction coil and a power supply;

[0049] The inlet pipe and the outlet pipe are respectively leakage detection pipes;

[0050] The leakage detection pipe includes a water pipe, the outer wall of the water pipe is coated with absorbent cotton, and a hose is coated outside the absorbent cotton. A bare metal wire is arranged between the hose and the absorbent cotton.

[0051] The bare metal wire is connected to the negative pole of the power supply;

[0052] Electrodes are provided on both the inlet pipe and the outlet pipe. When there is water in the inlet pipe and the outlet pipe, the electrodes are in contact with the water in the corresponding pipe;

[0053] The electrodes of the inlet pipe and the electrodes of the outlet pipe are connected to both ends of the power supply through cables to form a power supply loop;

[0054] The induction coil is sleeved on the inlet pipe and the outlet pipe;

[0055] The induction coil is connected to a controller through a current detection circuit;

[0056] The controller is configured to output a control signal to the outside according to the detection signal of the current detection circuit to drive a driving mechanism for the water circulation of the water cooling pipe.

[0057] When the liquid leakage detection pipe is in use, the water-absorbing cotton is used to promptly absorb the leaked water from the water pipe to prevent the damage to the server motherboard caused by the leakage. The purpose of wrapping the outside of the water-absorbing cotton with a hose is to prevent the water in the water-absorbing cotton from causing damage to the server motherboard due to excessive water absorption. One end of the bare metal wire is grounded. When the water in the water pipe is electrified, if there is a leakage phenomenon, the bare metal wire is connected to the leakage. One end of the bare metal wire is grounded. In this way, there is an electric current in the bare metal wire, and the existence of the leakage phenomenon is judged by detecting the electric current in the bare metal wire.

[0058] As a preference of the technical solution of the present invention, the induction coil sleeve is arranged on the water inlet pipe and the water outlet pipe near one end of the heat dissipation device.

[0059] A water pump is arranged on the water inlet pipe or the water outlet pipe;

[0060] The water pump is connected to the controller; when the controller judges that there is liquid leakage in the water cooling pipe according to the detection signal of the current detection circuit, it outputs a control signal to control the water pump to stop working.

[0061] As a preference of the technical solution of the present invention, the bare metal wire is attached to the wall of the hose.

[0062] As a preference of the technical solution of the present invention, the number of the bare metal wires is four, and the four bare metal wires are attached to the wall of the hose at equal intervals.

[0063] As a preference of the technical solution of the present invention, the electrode of the water inlet pipe is arranged at the water inlet position of the water inlet pipe, and the electrode of the water outlet pipe is arranged at the water outlet position.

[0064] As a preference of the technical solution of the present invention, the electrode of the water inlet pipe is connected to the positive pole of the power supply through a current limiting resistor;

[0065] The electrode of the water outlet pipe is connected to the negative pole of the power supply through a cable.

[0066] As a preference of the technical solution of the present invention, the current detection circuit includes a current sensor, and the current sensor is connected to the controller.

[0067] The working process of the whole system is as follows: turn on the power supply to electrify the water in the water inlet pipe and the water outlet pipe. Under normal circumstances, since there is no leakage, the current magnitudes in the water inlet pipe and the water outlet pipe are equal and opposite in direction, and no induced current will be generated in the induction coil. When there is a leakage in the water pipe, the water seeping out of the water pipe will be absorbed by the water-absorbing cotton, thus conducting with the bare metal wire outside the water-absorbing cotton, generating a leakage current. The current magnitudes in the water inlet pipe and the water outlet pipe are inconsistent, and the induction coil sleeved outside the water inlet pipe and the water outlet pipe will generate an induced current. After the induced current is collected by the current detection circuit and transmitted to the controller to detect the generation of the induced current, the controller further controls the action mechanism to cut off the power supply of the server system and controls the water pump to stop supplying water and other operations.

[0068] As can be seen from the above technical solutions, the present invention has the following advantages: it can detect water leakage in a timely and effective manner, absorb the water leakage, and prevent the water leakage from dripping onto the main board and causing short circuit to damage the circuit components. At the same time, the installation of dedicated detection devices is reduced, thus reducing costs.

[0069] In addition, the design principle of the present invention is reliable, the structure is simple, and it has a very broad application prospect.

[0070] Thus, compared with the prior art, the present invention has outstanding substantive features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0072] Figure 1 is a schematic cross-sectional view of a liquid leakage detection tube according to an embodiment of the present invention.

[0073] Figure 2 is a schematic view of a liquid leakage detection tube according to an embodiment of the present invention.

[0074] Figure 3 is a schematic connection diagram of a detection device according to an embodiment of the present invention.

[0075] Figure 4 is a schematic circuit diagram of a detection principle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0076] The existing heat dissipation methods are mainly divided into two major types: air cooling and liquid cooling. The air cooling method is an indirect contact type of heat dissipation. The traditional server heat dissipation method is to use air cooling, and a fan is used to take away the heat generated by the heat generating components in the chassis. This method has high cooling power consumption, loud fan noise, low heat dissipation efficiency, low equipment density, and since the thermal conductivity of air is much lower than that of the coolant, it cannot meet the heat dissipation requirements under high heat generation. In addition, it also increases the system power consumption. That is to say, the current air cooling system has already approached its economic and effective refrigeration limit. Therefore, for servers with high integration and high heat generation, a liquid cooling method with higher refrigeration efficiency can be used for heat dissipation. Although the liquid cooling method has many advantages, it also has the risk of liquid leakage.

[0077] Existing solutions for detecting liquid leakage generally require installing a dedicated liquid leakage detection control board inside the server chassis to detect whether liquid leakage occurs in the pipeline. Adding an additional liquid leakage detection board in the system increases the types and quantities of cables, which is not conducive to installation, and also increases the system cost and unreliability, adding difficulties in aspects such as cost control and structural design. Moreover, when liquid leakage occurs, the leaked liquid cannot be absorbed in time. When the leaked liquid seeps into the circuit, it will cause a short circuit and damage the electronic components.

[0078] To enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0079] As Figure 1 and 2 shown, an embodiment of the present invention provides a liquid leakage detection tube, which includes a water pipe 101. The outer wall of the water pipe 101 is coated with a water-absorbing cotton 102. A hose 103 is coated on the outer layer of the water-absorbing cotton 102. An exposed metal wire 104 is arranged between the hose 103 and the water-absorbing cotton 102.

[0080] When the liquid leakage detection tube is in use, the function of the water-absorbing cotton 102 is to promptly absorb the leaked water of the water pipe 101 to prevent the damage to the server main board caused by the water leakage. The purpose of wrapping the outer part of the water-absorbing cotton 102 with the hose 103 is to prevent the water in the water-absorbing cotton from damaging the server main board due to excessive water absorption. One end of the exposed metal wire 104 is grounded. When the water in the water pipe 101 is electrified, if a water leakage phenomenon occurs, the exposed metal wire 104 is connected to the leaked water, and one end of the exposed metal wire is grounded. In this way, there is current in the exposed metal wire, and the existence of the water leakage phenomenon is judged by detecting the current in the exposed metal wire.

[0081] As Figure 1 and 2 shown, an embodiment of the present invention provides a liquid leakage detection tube, which includes a water pipe 101. The outer wall of the water pipe 101 is coated with a water-absorbing cotton 102. A hose 103 is coated on the outer layer of the water-absorbing cotton 102. An exposed metal wire 104 is arranged between the hose 103 and the water-absorbing cotton 102.

[0082] When the liquid leakage detection pipe is in use, the absorbent cotton 102 is used to promptly absorb the leaked water from the water pipe 101 to prevent the damage to the server motherboard caused by the leakage. The purpose of wrapping the outer part of the absorbent cotton 102 with the hose 103 is to prevent the water in the absorbent cotton from damaging the server motherboard due to excessive water absorption. One end of the bare metal wire 104 is grounded. When the water in the water pipe 101 is electrified, if there is a leakage phenomenon, the bare metal wire 104 is connected to the leakage. One end of the bare metal wire is grounded. In this way, there is an electric current in the bare metal wire, and the existence of the leakage phenomenon is judged by detecting the electric current in the bare metal wire.

[0083] The bare metal wire 104 is attached to the wall of the hose 103. The number of the bare metal wires 104 is four, and the four bare metal wires are attached to the wall of the hose at equal intervals. Since the cross-section of the water pipe is circular, in order to more comprehensively detect the leakage of the water pipe, the bare metal wires are evenly distributed on the wall of the hose.

[0084] Such as Figure 1 、 2 As shown in FIGS. 3, the embodiment of the present invention further provides a liquid leakage detection device for a water-cooled pipe, which is applied to a heat dissipation system. The system includes a heat dissipation device. The water-cooled pipe includes a water inlet pipe and a water outlet pipe respectively connected to the heat dissipation device; the detection device includes an induction coil and a power supply; here, the heat dissipation device includes a heat sink, and the water inlet pipe and the water outlet pipe are respectively connected to the heat sink;

[0085] The water inlet pipe and the water outlet pipe are respectively liquid leakage detection pipes;

[0086] The liquid leakage detection pipe includes a water pipe 101, the outer wall of the water pipe 101 is coated with absorbent cotton 102, and a hose 103 is coated on the outer layer of the absorbent cotton 102. A bare metal wire 104 is arranged between the hose 103 and the absorbent cotton 102.

[0087] When the liquid leakage detection pipe is in use, the absorbent cotton 102 is used to promptly absorb the leaked water from the water pipe 101 to prevent the damage to the server motherboard caused by the leakage. The purpose of wrapping the outer part of the absorbent cotton 102 with the hose 103 is to prevent the water in the absorbent cotton from damaging the server motherboard due to excessive water absorption. One end of the bare metal wire 104 is grounded. When the water in the water pipe 101 is electrified, if there is a leakage phenomenon, the bare metal wire 104 is connected to the leakage. One end of the bare metal wire is grounded. In this way, there is an electric current in the bare metal wire, and the existence of the leakage phenomenon is judged by detecting the electric current in the bare metal wire.

[0088] The bare metal wire 104 is connected to the negative electrode of the power supply;

[0089] Electrodes 1101 are arranged on both the water inlet pipe and the water outlet pipe. When there is water in the water inlet pipe and the water outlet pipe, the electrodes 1101 are in contact with the water in the corresponding pipe;

[0090] The electrode 1101 of the water inlet pipe and the electrode of the water outlet pipe are connected to both ends of the power supply through cables to form a power supply loop;

[0091] The induction coil 201 is sleeved on the water inlet pipe and the water outlet pipe;

[0092] The induction coil 201 is connected to a controller through a current detection circuit;

[0093] The controller is configured to output a control signal to the outside according to the detection signal of the current detection circuit to drive a driving mechanism for the water circulation of the water-cooled pipe.

[0094] The detection principle of the present invention is as Figure 4 shown. Under normal circumstances, the leakage current I3 is 0, the magnitudes of I1 and I2 are the same and the directions are opposite, and the magnetic fluxes generated by I1 and I2 cancel each other out and are zero. When a leakage current is generated, I3 is greater than 0, the magnitudes of I1 and I2 are inconsistent, and the sum of the generated magnetic fluxes is not zero. The induction coil sleeved outside I1 and I2 will generate an induction current due to the change in magnetic flux, thereby detecting the generation of leakage.

[0095] The working process of the entire system is as follows. When the power supply is turned on to energize the water in the water inlet pipe and the water outlet pipe, under normal circumstances, since there is no water leakage, the currents in the water inlet pipe and the water outlet pipe are equal in magnitude and opposite in direction, and no induction current will be generated in the induction coil. When the water pipe leaks, the water seeping out of the water pipe will be absorbed by the absorbent cotton, thereby conducting with the bare metal wire outside the absorbent cotton, generating a leakage current. The currents in the water inlet pipe and the water outlet pipe are inconsistent in magnitude, and the induction coil sleeved outside the water inlet pipe and the water outlet pipe will generate an induction current. The induction current is collected by the current detection circuit and then transmitted to the controller to detect the generation of the induction current, and then control the action mechanism to cut off the power supply of the server system and control the water pump to stop supplying water, etc.

[0096] As Figure 1 、 2 、Figure 3 shows, an embodiment of the present invention further provides a water-cooled pipe liquid leakage detection device, which is applied to a heat dissipation system. The system includes a heat dissipation device, and the water-cooled pipe includes a water inlet pipe and a water outlet pipe respectively connected to the heat dissipation device; the detection device includes an induction coil and a power supply; here, the heat dissipation device includes a heat sink, and the water inlet pipe and the water outlet pipe are respectively connected to the heat sink;

[0097] The water inlet pipe and the water outlet pipe are respectively liquid leakage detection pipes;

[0098] The liquid leakage detection pipe includes a water pipe 101, the outer wall of the water pipe 101 is coated with absorbent cotton 102, and a hose 103 is coated outside the absorbent cotton 102. A bare metal wire 104 is provided between the hose 103 and the absorbent cotton 102.

[0099] When the liquid leakage detection pipe is in use, the water-absorbing cotton 102 is used to promptly absorb the leaked water from the water pipe 101 to prevent the leaked water from damaging the server motherboard. The purpose of wrapping the outside of the water-absorbing cotton 102 with a hose 103 is to prevent the water in the water-absorbing cotton from damaging the server motherboard due to excessive water absorption. One end of the bare metal wire 104 is grounded. When the water in the water pipe 101 is electrified, if there is a water leakage phenomenon, the bare metal wire 104 is connected to the leaked water, and one end of the bare metal wire is grounded. In this way, there is an electric current in the bare metal wire, and the existence of the water leakage phenomenon is judged by detecting the electric current in the bare metal wire.

[0100] The bare metal wire 104 is connected to the negative pole of the power supply;

[0101] Both the water inlet pipe and the water outlet pipe are provided with electrodes 1101. When there is water in the water inlet pipe and the water outlet pipe, the electrodes 1101 are in contact with the water in the corresponding pipe;

[0102] The electrode of the water inlet pipe and the electrode of the water outlet pipe are connected to both ends of the power supply through a cable to form a power supply loop;

[0103] The induction coil 201 is sleeved on the water inlet pipe and the water outlet pipe;

[0104] The induction coil 201 is connected to a controller through a current detection circuit;

[0105] The controller is used to output a control signal to the outside according to the detection signal of the current detection circuit to drive a driving mechanism for the water circulation of the water-cooled pipe.

[0106] The bare metal wire 104 is attached to the hose wall. The number of the bare metal wires 104 is four, and the four bare metal wires are attached to the hose wall at equal intervals. Since the cross-section of the water pipe is circular, in order to more comprehensively detect the water leakage phenomenon of the water pipe, the bare metal wires are evenly distributed on the hose wall.

[0107] The electrode of the water inlet pipe is arranged at the water inlet position of the water inlet pipe, and the electrode of the water outlet pipe is arranged at the water outlet position. The electrode of the water inlet pipe is connected to the positive pole of the power supply through a current-limiting resistor; the electrode of the water outlet pipe is connected to the negative pole of the power supply through a cable. The current detection circuit includes a current sensor, and the current sensor is connected to the controller. The induction coil 201 is sleeved on the water inlet pipe and the water outlet pipe near one end of the heat dissipation device.

[0108] An embodiment of the present invention further provides a liquid cooling system, including a heat dissipation device and a water-cooled pipe liquid leakage detection device connected to the heat dissipation device;

[0109] The water-cooled pipe liquid leakage detection device is applied to a heat dissipation system. The system includes a heat dissipation device. The water-cooled pipe liquid leakage detection device includes a water inlet pipe and a water outlet pipe respectively connected to the heat dissipation device; the detection device includes an induction coil and a power supply;

[0110] The water inlet pipe and the water outlet pipe are respectively leak detection pipes;

[0111] The leak detection pipe includes a water pipe, the outer wall of the water pipe is coated with absorbent cotton, and a hose is coated on the outer layer of the absorbent cotton. An exposed metal wire is arranged between the hose and the absorbent cotton.

[0112] The exposed metal wire is connected to the negative pole of the power supply;

[0113] Both the water inlet pipe and the water outlet pipe are provided with electrodes. When there is water in the water inlet pipe and the water outlet pipe, the electrodes are in contact with the water in the corresponding pipe;

[0114] The electrode of the water inlet pipe and the electrode of the water outlet pipe are connected to both ends of the power supply through a cable to form a power supply loop;

[0115] The induction coil is sleeved on the water inlet pipe and the water outlet pipe;

[0116] The induction coil is connected to a controller through a current detection circuit;

[0117] The controller is used to output a control signal to the outside according to the detection signal of the current detection circuit to drive the driving mechanism for the water circulation of the water cooling pipe.

[0118] The induction coil sleeve is arranged on the water inlet pipe and the water outlet pipe near one end of the heat dissipation device.

[0119] A water pump is arranged on the water inlet pipe or the water outlet pipe;

[0120] The water pump is connected to the controller; when the controller judges that there is a liquid leakage in the water cooling pipe according to the detection signal of the current detection circuit, it outputs a control signal to control the water pump to stop working.

[0121] The exposed metal wire is attached to the hose wall. The number of exposed metal wires is four, and the four exposed metal wires are attached to the hose wall at equal intervals. Since the cross-section of the water pipe is circular, in order to more comprehensively detect the water leakage of the water pipe, the exposed metal wires are evenly distributed on the hose wall.

[0122] The electrode of the water inlet pipe is arranged at the water inlet position of the water inlet pipe, and the electrode of the water outlet pipe is arranged at the water outlet position. The electrode of the water inlet pipe is connected to the positive pole of the power supply through a current limiting resistor;

[0123] The electrode of the water outlet pipe is connected to the negative pole of the power supply through a cable. The current detection circuit includes a current sensor, and the current sensor is connected to the controller.

[0124] The working process of the entire system is as follows. When the power is turned on, electricity is applied to the water in the inlet pipe and the outlet pipe. Under normal circumstances, since there is no water leakage, the magnitudes of the currents in the inlet pipe and the outlet pipe are equal and the directions are opposite, and no induced current will be generated in the induction coil. When there is water leakage in the water pipe, the water seeping out of the water pipe will be absorbed by the absorbent cotton, thus conducting with the bare metal wire outside the absorbent cotton and generating a leakage current. The magnitudes of the currents in the inlet pipe and the outlet pipe are inconsistent, and the induction coil sleeved outside the inlet pipe and the outlet pipe will generate an induced current. After the induced current is collected by the current detection circuit and transmitted to the controller to detect the generation of the induced current, the controller will then control the action mechanism to cut off the power supply of the server system and control the water pump to stop supplying water, etc.

[0125] An embodiment of the present invention further provides a data center, which includes a server and a liquid cooling system. The liquid cooling system includes a heat dissipation device and a water leakage detection device for the water cooling pipe. The water leakage detection device for the water cooling pipe includes an inlet pipe and an outlet pipe respectively connected to the heat dissipation device; the detection device includes an induction coil and a power supply;

[0126] The inlet pipe and the outlet pipe are respectively leakage detection pipes;

[0127] The leakage detection pipe includes a water pipe, the outer wall of the water pipe is coated with absorbent cotton, and a hose is coated outside the absorbent cotton, and a bare metal wire is arranged between the hose and the absorbent cotton.

[0128] The bare metal wire is connected to the negative pole of the power supply;

[0129] Electrodes are provided on both the inlet pipe and the outlet pipe. When there is water in the inlet pipe and the outlet pipe, the electrodes are in contact with the water in the corresponding pipe;

[0130] The electrode of the inlet pipe and the electrode of the outlet pipe are connected to both ends of the power supply through a cable to form a power supply loop;

[0131] The induction coil is sleeved on the inlet pipe and the outlet pipe;

[0132] The induction coil is connected to a controller through a current detection circuit;

[0133] The controller is used to output a control signal to the outside according to the detection signal of the current detection circuit to drive the driving mechanism for the water circulation of the water cooling pipe.

[0134] The induction coil sleeve is arranged on the inlet pipe and the outlet pipe near one end of the heat dissipation device.

[0135] A water pump is arranged on the inlet pipe or the outlet pipe;

[0136] The water pump is connected to the controller; when the controller determines that there is water leakage in the water cooling pipe according to the detection signal of the current detection circuit, it outputs a control signal to control the water pump to stop working.

[0137] The bare metal wires are attached to the inner wall of the hose. The number of bare metal wires is four, and the four bare metal wires are attached to the inner wall of the hose at equal intervals.

[0138] The electrode of the water inlet pipe is arranged at the water inlet position of the water inlet pipe, and the electrode of the water outlet pipe is arranged at the water outlet position. The electrode of the water inlet pipe is connected to the positive pole of the power supply through a current-limiting resistor;

[0139] The electrode of the water outlet pipe is connected to the negative pole of the power supply through a cable.

[0140] The current detection circuit includes a current sensor, and the current sensor is connected to the controller.

[0141] The working process of the whole system is as follows: turn on the power to energize the water in the water inlet pipe and the water outlet pipe. Under normal circumstances, since there is no water leakage, the magnitudes of the currents in the water inlet pipe and the water outlet pipe are equal and opposite in direction, and no induced current will be generated in the induction coil. When water leakage occurs in the water pipe, the water flow seeping out of the water pipe will be absorbed by the absorbent cotton, thus conducting with the bare metal wires outside the absorbent cotton, generating a leakage current. The magnitudes of the currents in the water inlet pipe and the water outlet pipe are inconsistent, and the induction coil sleeved outside the water inlet pipe and the water outlet pipe will generate an induced current. After the induced current is collected by the current detection circuit and transmitted to the controller, the generation of the induced current is detected, and then the action mechanism is controlled to cut off the power supply of the server system and control the water pump to stop supplying water, etc.

[0142] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope of the present invention. / Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the said claims.

Claims

1. A liquid leakage detection device for a water-cooled pipe, which is applied to a heat dissipation system. The system includes a heat dissipation device, and the water-cooled pipe includes a water inlet pipe and a water outlet pipe respectively connected to the heat dissipation device; characterized in that, The detection device includes an induction coil and a power supply; The water inlet pipe and the water outlet pipe are respectively leak detection pipes; the leak detection pipe includes a water pipe, the outer wall of the water pipe is coated with absorbent cotton, and a hose is coated outside the absorbent cotton, and bare metal wires are arranged between the hose and the absorbent cotton; the bare metal wires are connected to the negative pole of the power supply; Electrodes are arranged on both the water inlet pipe and the water outlet pipe. When there is water in the water inlet pipe and the water outlet pipe, the electrodes are in contact with the water in the corresponding pipe; The electrodes of the water inlet pipe and the electrodes of the water outlet pipe are connected to both ends of the power supply through a cable to form a power supply loop; The induction coil is sleeved on the water inlet pipe and the water outlet pipe; The induction coil is connected to a controller through a current detection circuit; The controller is used to output a control signal to an external drive mechanism for driving the water circulation of the water cooling pipe according to the detection signal of the current detection circuit.

2. The liquid leakage detection device for the water-cooled pipe according to claim 1, wherein The bare metal wires are attached to the inner wall of the hose.

3. The liquid leakage detection device for the water-cooled pipe according to claim 2, wherein The number of bare metal wires is four, and the four bare metal wires are attached to the inner wall of the hose at equal intervals.

4. The liquid leakage detection device for a water-cooled pipe according to claim 1, characterized in that, The electrode of the water inlet pipe is arranged at the water inlet position of the water inlet pipe, and the electrode of the water outlet pipe is arranged at the water outlet position.

5. The liquid leakage detection device for a water-cooled pipe according to claim 4, characterized in that, The electrode of the water inlet pipe is connected to the positive pole of the power supply through a current limiting resistor; The electrode of the water outlet pipe is connected to the negative pole of the power supply through a cable.

6. The liquid leakage detection device for a water-cooled pipe according to claim 1, wherein, The current detection circuit includes a current sensor, and the current sensor is connected to the controller.

7. The liquid leakage detection device for a water-cooled pipe according to claim 1, wherein The induction coil sleeve is arranged on the water inlet pipe and the water outlet pipe near one end of the heat dissipation device.

8. A liquid cooling system, characterized in that, It includes a heat dissipation device and a water cooling pipe leak detection device as described in any one of claims 1-7 connected to the heat dissipation device; A water pump is arranged on the water inlet pipe or the water outlet pipe; The water pump is connected to the controller; when the controller judges that there is a leak in the water cooling pipe according to the detection signal of the current detection circuit, it outputs a control signal to control the water pump to stop working.

9. A data center, characterized in that, It includes a liquid cooling system as described in claim 8.

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