Real-time monitoring device and monitoring method for liquid leakage of liquid-cooled closed cabinet based on tracer gas

Abstract

The invention relates to a tracer gas-based liquid-cooled closed cabinet leakage real-time monitoring device and a tracer gas-based liquid-cooled closed cabinet leakage real-time monitoring method, the monitoring device comprises a closed water tank, a liquid-cooled power system, a closed cabinet and a tracer gas sensor, the closed water tank is connected with the liquid-cooled power system through an external pipeline, the liquid-cooled power system is connected with an internal pipeline in the closed cabinet, and the tracer gas sensor is connected with the closed cabinet. The tracer gas sensor is installed in the closed cabinet, cooling liquid containing tracer gas is injected into the closed water tank and is injected into the closed cabinet through the liquid cooling power system, the concentration of the tracer gas is sensed through the tracer gas sensor, and a liquid leakage signal is sent out to pass through the liquid cooling control system. According to the invention, by utilizing the compatibility and volatility of the tracer gas and through reasonable layout and monitoring of the tracer gas sensor, a leakage point area in the liquid cooling system can be monitored in real time, an alarm signal is fed back to the liquid cooling control system for emergency treatment by an operator, the defect of hysteresis of a conventional monitoring and detection technology is effectively solved, and the reliability of the liquid cooling system is improved. And the safety and the reliability of the liquid cooling pipe network are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of defense computer engineering applications, and in particular to a real-time monitoring device and method for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas. Background Art

[0002] Modern electronic equipment is developing rapidly. Electronic equipment is becoming more compact and its heat flux density is also increasing. At the same time, the heat exchange mode of electronic equipment has also changed greatly, from the previous natural heat exchange and forced ventilation heat exchange to liquid cooling.

[0003] The liquid cooling system mainly uses liquid circulation cooling to exchange heat with electronic equipment. The liquid cooling system of the circulating liquid cooling system discharges heat into the atmosphere. Through the circulation cooling method, the electronic equipment is continuously cooled to provide a stable and suitable working environment for the electronic equipment.

[0004] However, the leakage problem of the liquid cooling pipe network reduces the reliability and safety of the liquid cooling system, and seriously restricts the application of the liquid cooling system in the field of defense / anti-harsh environment computers. When the flow channel of the liquid cooling system is perforated due to corrosion, the coolant in the flow channel will leak from the perforation to the board, causing damage to the load end. For example, when the coolant is water, the water in the pipe leaks onto the circuit board, which may cause accidents such as short circuit or burning of the circuit board.

[0005] Conventional liquid cooling system leakage monitoring and detection technologies include inlet and outlet pressure difference monitoring, liquid volume monitoring in water storage tanks, monitoring by adding tracer color substances to the coolant, and capillary detectors in high-risk and easily exposed areas. Among them, inlet and outlet pressure difference monitoring and liquid volume monitoring in water storage tanks are not sensitive to small volume leakages, and when the leakage is discovered, the coolant has already leaked a large amount; the addition of tracer color substances to the coolant for monitoring and capillary detection in high-risk and easily exposed areas usually require accurate prediction of the leak points, and regular manual visual inspections are required, which are basically ineffective for leaks in hidden areas. The above monitoring and detection technologies have a certain lag, and when the leakage point is discovered, a large degree of leakage has already occurred, resulting in irreparable losses and even personal and property accidents.

[0006] In view of the above technical problems, a real-time monitoring method for liquid leakage in a liquid-cooled closed cabinet based on tracer gas was proposed. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas, which is suitable for liquid cooling systems such as unattended, closed circulation pipe networks, and has real-time monitoring and active alarm functions.

[0008] The present invention also provides a monitoring method for a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas. By utilizing the compatibility and volatility of the tracer gas and through the reasonable layout and monitoring of the tracer gas sensor, the leakage area in the liquid cooling system can be monitored in real time, and the alarm signal can be fed back to the liquid cooling control system for the operator to make emergency treatment, thereby effectively solving the drawbacks of the lag of conventional monitoring and detection technology and improving the safety and reliability of the liquid cooling pipeline network.

[0009] The present invention solves the technical problem by the following technical solutions:

[0010] A real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas comprises a closed water tank, a liquid-cooled power system, a closed cabinet and a tracer gas sensor, wherein the closed water tank is connected to the liquid-cooled power system through an external pipeline, the liquid-cooled power system is connected to the internal pipeline in the closed cabinet through an air inlet pipe and an air outlet pipe respectively, the tracer gas sensor is installed on the top or bottom of the inner cavity of the closed cabinet, a coolant containing the tracer gas is injected into the closed water tank, the coolant containing the tracer gas is injected into the closed cabinet through the liquid-cooled power system, and the concentration of the tracer gas is sensed by the tracer gas sensor, and a liquid leakage signal is sent through the liquid-cooled control system.

[0011] Furthermore, the air outlet pipe is located at the upper end of the liquid cooling power system.

[0012] Furthermore, the air intake pipe is located at the lower end of the liquid-cooled power system.

[0013] Further, when the density of the tracer gas is less than that of air, the tracer gas sensor is installed on the top of the inner cavity of the closed cabinet.

[0014] Further, when the density of the tracer gas is greater than that of air, the tracer gas sensor is installed at the bottom of the inner cavity of the closed cabinet.

[0015] Furthermore, the tracer gas is chlorine dioxide, ammonia or nitrogen dioxide.

[0016] A monitoring method of a real-time monitoring device for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas, comprising the following steps:

[0017] Step 1: Prepare a coolant containing a rated concentration of tracer gas, and inject the coolant containing the rated concentration of tracer gas into a closed water tank; or mix the tracer gas or preparation agent into the closed water tank, and monitor the tracer gas concentration of the closed water tank outlet and return water to reach the rated concentration;

[0018] Step 2: Set the tracer gas sensor startup concentration to 1ppm;

[0019] Step 3: Start the liquid cooling power system and run it stably;

[0020] Step 4: Liquid leaks in the sealed cabinet and tracer gas is released and escapes;

[0021] Step 5: The tracer gas concentration exceeds the tracer gas sensor threshold;

[0022] Step 6: When the density of the tracer gas is greater than that of air, the tracer gas sensor installed at the bottom of the inner cavity of the closed cabinet sends a leakage signal to the liquid cooling control system; when the density of the tracer gas is less than that of air, the tracer gas sensor installed at the top of the inner cavity of the closed cabinet sends a leakage signal to the liquid cooling control system;

[0023] Real-time monitoring of liquid leakage in liquid-cooled closed cabinets based on tracer gas is completed.

[0024] Furthermore, in step 1, the tracer gas is chlorine dioxide, the coolant is water, and the concentration is 0.8 mg / L; the preparation agent is chlorine dioxide effervescent tablets.

[0025] Furthermore, in step 4, the concentration measurement range of the tracer gas sensor is 0-10 ppm.

[0026] The advantages and positive effects of the present invention are:

[0027] 1. The real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas of the present invention is suitable for liquid cooling systems such as unattended, closed circulation pipe networks, etc., and can realize real-time alarm for liquid leakage in the working state of the liquid cooling system; alarm for liquid leakage in hidden parts; and provide a technical basis for subsequent manual intervention and emergency shutdown of liquid cooling branches.

[0028] 2. The present invention is based on the tracer gas liquid cooling closed cabinet leakage real-time monitoring device and monitoring method, using the compatibility and volatility of the tracer gas, through the reasonable layout and monitoring of the tracer gas sensor, can monitor the leakage point area in the liquid cooling system in real time, and feed back the alarm signal to the liquid cooling control system for the operator to take emergency treatment actions. Its application can effectively solve the drawbacks of the lag of conventional monitoring and detection technology, and greatly improve the safety and reliability of the liquid cooling network.

[0029] 3. In the real-time monitoring device and method for liquid leakage in a liquid-cooled closed cabinet based on tracer gas of the present invention, the characteristics of the tracer gas are low environmental background (air) content, non-toxicity, solubility in coolant (usually water), non-corrosiveness, and mature detection technology. The following gases can be used but are not limited to: chlorine dioxide, ammonia, and nitrogen dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The structure of the real-time monitoring device for liquid leakage of liquid-cooled sealed cabinet based on tracer gas of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 2The structure of the real-time monitoring device for liquid leakage of liquid-cooled sealed cabinet based on tracer gas of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 3 It is a diagram of the implementation steps of the monitoring method of the real-time monitoring device for liquid leakage of a liquid-cooled closed cabinet based on tracer gas of the present invention;

[0033] In the figure:

[0034] 1-enclosed cabinet, 2-internal pipeline, 3-external pipeline, 4-liquid cooling power system, 5-enclosed water tank, 6-tracer gas sensor, 7-inlet pipe, 8-outlet pipe. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0036] Example 1

[0037] like Figure 1 As shown, a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas includes a closed water tank 5, a liquid-cooled power system 4, a closed cabinet 1 and a tracer gas sensor 6, wherein the closed water tank 5 is connected to the liquid-cooled power system 4 through an external pipeline 3, and the liquid-cooled power system 4 is connected to the internal pipeline 2 in the closed cabinet 1 through an air inlet pipe 7 and an air outlet pipe 8, respectively, wherein the air outlet pipe 8 is located at the upper end of the liquid-cooled power system 4, and the air inlet pipe 7 is located at the lower end of the liquid-cooled power system 4.

[0038] When the density of the tracer gas is less than that of air, the tracer gas sensor 6 is installed on the top of the inner cavity of the closed cabinet 1, and the coolant containing the tracer gas is injected into the closed water tank 5. The coolant containing the tracer gas is injected into the closed cabinet 1 through the liquid cooling power system 4, and the tracer gas concentration is sensed by the tracer gas sensor 6, and a leakage signal is sent through the liquid cooling control system. The tracer gas is chlorine dioxide, ammonia or nitrogen dioxide.

[0039] Example 2

[0040] like Figure 2 As shown, a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas includes a closed water tank 5, a liquid-cooled power system 4, a closed cabinet 1 and a tracer gas sensor 6, wherein the closed water tank 5 is connected to the liquid-cooled power system 4 through an external pipeline 3, and the liquid-cooled power system 4 is connected to the internal pipeline 2 in the closed cabinet 1 through an air inlet pipe 7 and an air outlet pipe 8, respectively, wherein the air outlet pipe 8 is located at the upper end of the liquid-cooled power system 4, and the air inlet pipe 7 is located at the lower end of the liquid-cooled power system 4.

[0041] When the density of the tracer gas is greater than that of air, the tracer gas sensor 6 is installed at the bottom of the inner cavity of the closed cabinet 1, and the coolant containing the tracer gas is injected into the closed water tank 5. The coolant containing the tracer gas is injected into the closed cabinet 1 through the liquid cooling power system 4, and the tracer gas concentration is sensed by the tracer gas sensor 6, and a leakage signal is sent through the liquid cooling control system. The tracer gas is chlorine dioxide, ammonia or nitrogen dioxide.

[0042] Working principle of the present invention:

[0043] A tracer gas is injected into the coolant. The tracer gas is easily soluble in water. When the coolant containing the tracer gas at a rated concentration contacts the air, it will be released into the air. A tracer gas detection sensor is arranged inside the closed cabinet 1. When leakage occurs inside the closed cabinet 1, the concentration of the tracer gas in the air exceeds the threshold of the tracer gas sensor 6, and the tracer gas sensor 6 sends an electrical signal to the liquid cooling control system for alarm or emergency processing.

[0044] Example 3

[0045] like Figure 3 As shown, a monitoring method of a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas comprises the following steps:

[0046] Step 1: prepare a coolant containing a rated concentration of tracer gas, and inject the coolant containing the rated concentration of tracer gas into a closed water tank; the tracer gas is chlorine dioxide, and the coolant is water, with a concentration of 0.8 mg / L;

[0047] Step 2: To avoid false alarms, set the starting concentration of the tracer gas sensor 6 to 1 ppm, and the concentration measurement range of the tracer gas sensor 6 to 0-10 ppm;

[0048] Step 3: Start the liquid cooling power system 4 and run it stably;

[0049] Step 4: Liquid leaks in the sealed cabinet 1, and the tracer gas is released and escapes;

[0050] Step 5: The tracer gas concentration exceeds the threshold of the tracer gas sensor 6;

[0051] Step 6: When the density of the tracer gas is greater than that of air, the tracer gas sensor 6 installed at the bottom of the inner cavity of the closed cabinet 1 sends a leakage signal to the liquid cooling control system;

[0052] Real-time monitoring of liquid leakage in the liquid-cooled closed cabinet 1 based on tracer gas is completed.

[0053] Example 4

[0054] like Figure 3As shown, a monitoring method of a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas comprises the following steps:

[0055] Step 1: prepare a coolant containing a rated concentration of tracer gas, and inject the coolant containing the rated concentration of tracer gas into a closed water tank; the tracer gas is chlorine dioxide, and the coolant is water, with a concentration of 0.8 mg / L;

[0056] Step 2: To avoid false alarms, set the starting concentration of the tracer gas sensor 6 to 1 ppm, and the concentration measurement range of the tracer gas sensor 6 to 0-10 ppm;

[0057] Step 3: Start the liquid cooling power system 4 and run it stably;

[0058] Step 4: Liquid leaks in the sealed cabinet 1, and the tracer gas is released and escapes;

[0059] Step 5: The tracer gas concentration exceeds the threshold of the tracer gas sensor 6;

[0060] Step 6: When the density of the tracer gas is less than that of air, the tracer gas sensor 6 installed on the top of the inner cavity of the closed cabinet 1 sends a leakage signal to the liquid cooling control system;

[0061] Real-time monitoring of liquid leakage in the liquid-cooled closed cabinet 1 based on tracer gas is completed.

[0062] Example 5

[0063] like Figure 3 As shown, a monitoring method of a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas comprises the following steps:

[0064] Step 1: Mix tracer gas or preparation agent into the closed water tank, and monitor the tracer gas concentration of the closed water tank outlet and return water to reach the rated concentration; the tracer gas is chlorine dioxide, the coolant is water, and the concentration is 0.8 mg / L; the preparation agent is chlorine dioxide effervescent tablets;

[0065] Step 2: To avoid false alarms, set the starting concentration of the tracer gas sensor 6 to 1 ppm, and the concentration measurement range of the tracer gas sensor 6 to 0-10 ppm;

[0066] Step 3: Start the liquid cooling power system 4 and run it stably;

[0067] Step 4: Liquid leaks in the sealed cabinet 1, and the tracer gas is released and escapes;

[0068] Step 5: The tracer gas concentration exceeds the threshold of the tracer gas sensor 6;

[0069] Step 6: When the density of the tracer gas is greater than that of air, the tracer gas sensor 6 installed at the bottom of the inner cavity of the closed cabinet 1 sends a leakage signal to the liquid cooling control system;

[0070] Real-time monitoring of liquid leakage in the liquid-cooled closed cabinet 1 based on tracer gas is completed.

[0071] Example 6

[0072] like Figure 3 As shown, a monitoring method of a real-time monitoring device for liquid leakage in a liquid-cooled closed cabinet based on tracer gas comprises the following steps:

[0073] Step 1: Mix tracer gas or preparation agent into the closed water tank, and monitor the tracer gas concentration of the closed water tank outlet and return water to reach the rated concentration; the tracer gas is chlorine dioxide, the coolant is water, and the concentration is 0.8 mg / L; the preparation agent is chlorine dioxide effervescent tablets;

[0074] Step 2: To avoid false alarms, set the starting concentration of the tracer gas sensor 6 to 1 ppm, and the concentration measurement range of the tracer gas sensor 6 to 0-10 ppm;

[0075] Step 3: Start the liquid cooling power system 4 and run it stably;

[0076] Step 4: Liquid leaks in the sealed cabinet 1, and the tracer gas is released and escapes;

[0077] Step 5: The tracer gas concentration exceeds the threshold of the tracer gas sensor 6;

[0078] Step 6: When the density of the tracer gas is less than that of air, the tracer gas sensor 6 installed on the top of the inner cavity of the closed cabinet 1 sends a leakage signal to the liquid cooling control system;

[0079] Real-time monitoring of liquid leakage in the liquid-cooled closed cabinet 1 based on tracer gas is completed.

[0080] The above-mentioned tracer gas sensor 6 is a chlorine dioxide HH-4C1O2-10 concentration gas sensor produced by Huashenke.

[0081] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A real-time monitoring device for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas, characterized in that: The invention comprises a closed water tank, a liquid cooling power system, a closed cabinet and a tracer gas sensor. The closed water tank is connected to the liquid cooling power system through an external pipeline. The liquid cooling power system is connected to the internal pipeline in the closed cabinet through an air inlet pipe and an air outlet pipe respectively. The tracer gas sensor is installed on the top or bottom of the inner cavity of the closed cabinet. Coolant containing tracer gas is injected into the closed water tank. The coolant containing tracer gas is injected into the closed cabinet through the liquid cooling power system. The tracer gas concentration is sensed by the tracer gas sensor, and a leakage signal is sent through the liquid cooling control system.

2. The real-time monitoring device for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas according to claim 1 is characterized in that: The air outlet pipe is located at the upper end of the liquid cooling power system.

3. The real-time monitoring device for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas according to claim 1, characterized in that: The air intake pipe is located at the lower end of the liquid-cooled power system.

4. The real-time monitoring device for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas according to claim 1, characterized in that: When the density of the tracer gas is less than that of air, the tracer gas sensor is installed on the top of the inner cavity of the closed cabinet.

5. The real-time monitoring device for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas according to claim 1, characterized in that: When the density of the tracer gas is greater than that of air, the tracer gas sensor is installed at the bottom of the inner cavity of the closed cabinet.

6. The real-time monitoring device for liquid leakage in a liquid-cooled sealed cabinet based on tracer gas according to claim 1, characterized in that: The tracer gas is chlorine dioxide, ammonia or nitrogen dioxide.

7. The monitoring method of the real-time monitoring device for liquid leakage of a liquid-cooled sealed cabinet based on tracer gas according to claim 1 is characterized in that: The following steps are involved: Step 1: Prepare a coolant containing a rated concentration of tracer gas, and inject the coolant containing the rated concentration of tracer gas into a closed water tank; or mix the tracer gas or preparation agent into the closed water tank, and monitor the tracer gas concentration of the closed water tank outlet and return water to reach the rated concentration; Step 2: Set the tracer gas sensor startup concentration to 1ppm; Step 3: Start the liquid cooling power system and run it stably; Step 4: Liquid leaks in the sealed cabinet and tracer gas is released and escapes; Step 5: The tracer gas concentration exceeds the tracer gas sensor threshold; Step 6: When the density of the tracer gas is greater than that of air, the tracer gas sensor installed at the bottom of the inner cavity of the closed cabinet sends a leakage signal to the liquid cooling control system; when the density of the tracer gas is less than that of air, the tracer gas sensor installed at the top of the inner cavity of the closed cabinet sends a leakage signal to the liquid cooling control system; Real-time monitoring of liquid leakage in liquid-cooled closed cabinets based on tracer gas is completed.

8. The monitoring method of the real-time monitoring device for liquid-cooled closed cabinet leakage based on tracer gas according to claim 7 is characterized in that: In step 1, the tracer gas is chlorine dioxide, the coolant is water, and the concentration is 0.8 mg / L; the preparation agent is chlorine dioxide effervescent tablets.

9. The monitoring method of the real-time monitoring device for liquid leakage of a liquid-cooled sealed cabinet based on tracer gas according to claim 7, characterized in that: The concentration measurement range of the tracer gas sensor in step 4 is 0-10 ppm.

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