A method for airtightness detection of computer liquid cooling pipeline

Abstract

The present invention belongs to the field of computer technology, and specifically relates to a method for airtight detection of computer liquid cooling pipelines, and the airtight detection method includes the following steps: Step 1. Preparation: including cleaning the liquid cooling pipeline and inspecting the appearance; Step 2. Sealing test: including installing port seals and installing detection equipment; Step 3. Pressurization detection: including injecting test gas and air pressure control; Step 4. Detection process: including initial voltage stabilization and long-term voltage stabilization. The invention improves the cleanliness, sealing and detection accuracy of the liquid cooling pipeline system by using special cleaning fluid, precision detection instruments, gradually increasing and stabilizing pressure, comprehensive detection means and detailed data recording and analysis; and through fatigue and temperature stress tests, ensures the reliability of the system in long-term use, thereby effectively reducing detection errors and maintenance time, and improving the accuracy and reliability of the overall test.

Description

Technical Field

[0001] The invention belongs to the technical field of computers, and in particular relates to a method for performing airtight detection on a liquid cooling pipeline of a computer. Background Art

[0002] Computer liquid cooling is a highly efficient cooling solution designed specifically for use in modern high-performance computer systems to address heat dissipation requirements that cannot be met by traditional air cooling solutions. The liquid cooling system delivers a specially formulated coolant to the various heat-generating components in the system, such as the CPU and GPU, through a series of pipes. In these components, the coolant flows through a specially designed heat sink to absorb the generated heat. The heat is then returned to the radiator in the system along with the coolant, where it is released to the outside air through auxiliary equipment such as fans. The water pump provides power for the entire liquid cooling system to ensure that the coolant continues to circulate. After cooling, the coolant will be sent back to the heat sink to start the heat absorption process again. The key parts of the entire liquid cooling system include the heat sink, which is in direct contact with the heat source; the water pump, which is responsible for Promote the circulation of coolant; radiator, which dissipates heat into the air through external cooling; in addition, there are coolant and pipes. The former is a specially designed liquid with excellent thermal conductivity and stability that will not corrode pipes and accessories, while the latter are various hoses or hard pipes, usually made of corrosion-resistant materials such as PVC and silicone. At the same time, the liquid cooling system also requires various connectors and accessories, such as connectors for connecting pipes, valves to control liquid flow, and sensors to monitor system temperature and hydraulic pressure. These components must ensure tight connections and easy operation. The liquid cooling pipes of some computers used in outdoor environments or computers used in special environments are more susceptible to external environmental influences, and the air tightness requirements of the liquid cooling pipes are higher, requiring higher precision and intensity air tightness tests.

[0003] The existing equipment for airtightness testing of computer liquid cooling pipelines has insufficient accuracy, damage caused by gas impact pressure, instability of system pressure, inaccurate positioning of leak points, insufficient data recording and analysis, system reliability problems caused by fatigue pressure and temperature changes, incomplete leak repair, and unresolved system recovery problems after detection. Therefore, we propose a method for airtightness testing of computer liquid cooling pipelines to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a method for airtight detection of computer liquid cooling pipelines, which can improve the cleanliness, sealing and detection accuracy of the liquid cooling pipeline system by using special cleaning fluid, precision detection instruments, gradually increasing the pressure to stabilize the pressure, comprehensive detection means and detailed data recording and analysis; and through fatigue and temperature stress tests, ensure the reliability of the system in long-term use, thereby effectively reducing detection errors and maintenance time, and improving the accuracy and reliability of the overall test.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A method for performing airtightness detection on a computer liquid cooling pipeline, the airtightness detection method comprising the following steps:

[0007] Step 1. Preparation: including cleaning the liquid cooling pipes and inspecting the appearance;

[0008] Step 2. Sealing test: including installing port seals and installing testing equipment;

[0009] Step 3. Pressurization test: including injection of test gas and air pressure control;

[0010] Step 4. Testing process: including initial voltage stabilization and long-term voltage stabilization;

[0011] Step 5. Leak detection: including acoustic detection, spray detection, and pressure monitoring;

[0012] Step 6. Detection result analysis: including data analysis and location confirmation;

[0013] Step 7. High-intensity testing: including fatigue testing and temperature stress testing;

[0014] Step 8. Subsequent processing: including repair work and record files;

[0015] Step 9. Final cleanup and recovery: includes exhausting gases and restoring the system.

[0016] In a preferred embodiment, the cleaning of the liquid cooling pipeline is to use a special cleaning fluid and a brush to clean the inside of the pipeline, clean the outside of the pipeline, remove grease and dust, use a hair dryer or compressed air to ensure that the pipeline is completely dry, check whether the pipeline and joints have scratches, cracks and damage, and use a magnifying glass or microscope to check key parts to check whether there are tiny cracks.

[0017] In a preferred embodiment, the installation port seal is to select a suitable sealing material according to the pipeline material, the sealing material is a rubber plug or a special sealant, and check that the seal completely covers the pipeline opening. The installation detection equipment is to select a high-precision air tightness tester, use a high-pressure hose and a connector to connect the test instrument to the detection interface of the liquid cooling system, and check that the detection interface is tightly connected and there is no leakage.

[0018] In a preferred embodiment, the injected test gas is nitrogen or dry air, and the initial injection pressure P_0 is set to 200 kPa, which is gradually increased to the detection target pressure P_1;

[0019] [P_1=k\cdotP_0];

[0020] Where, k is the test pressure multiple, 1.5 or 2;

[0021] Slowly increase the gas pressure through the pressure reducing valve to prevent the impact pressure from damaging the pipeline, and use a pressure gauge to record the pressure value P_t and time t at each stage.

[0022] In a preferred embodiment, the preliminary pressure stabilization includes preliminary detection and recording of values. After reaching the predetermined pressure P_1, it is maintained for 10-15 minutes to observe whether the pressure is stable. The initial pressure value P_0, as well as the time and pressure change Deltat_{preliminary} during the pressure stabilization are recorded. The long-term pressure stabilization is to maintain the pressure for 4-8 hours, and the high-intensity detection is extended to 24 hours. The pressure P_0 at the beginning and the pressure P_1 at the end, as well as the corresponding time t, are recorded.

[0023] In a preferred embodiment, the acoustic detection is to use an ultrasonic leak detector to detect high-frequency sound signals, locate the leakage point, slowly move the probe along the pipes and joints, and record the specific location of the abnormal sound. The spray detection is to use a leak detection liquid to spray the detection liquid on all joints, connection points and suspicious parts to observe whether bubbles are generated. Bubbles represent gas leakage. The pressure monitoring is to use a high-precision data recording system to automatically analyze the pressure change data and generate a pressure change curve graph. The pressure drop during the detection is considered qualified within the allowable range, and it is determined to be a leak if it exceeds the range.

[0024] In a preferred embodiment, the data analysis is to record the pressure change value P_i and the pressure change in the time period Deltat, and calculate the gas leakage amount Q in the detection time period:

[0025] [Q=frac{V}{RT}cdot\frac{DeltaP}{Deltat}]

[0026] Where: Q is the gas leakage (m 3 / s), V is the volume of the container (m 3), R is the gas constant J / (mol·K), for air, R≈287J / (kg·K), T is the absolute temperature (K), DeltaP is the pressure change, and Deltat is the time change (s);

[0027] The position confirmation is to analyze the pressure changes found, determine the leakage point, and accurately mark the leakage point position on the drawings of the liquid cooling system.

[0028] In a preferred embodiment, the fatigue test is to repeatedly cycle the pressure under different pressure conditions, with a cycle of pressurization and depressurization once every hour to simulate long-term use;

[0029] Cumulative pressure load P_{cumulative}:

[0030] [P_{accumulated}=N\cdot\DeltaP_c];

[0031] Where N is the number of cycles, and DeltaP_c is the pressure change in each cycle;

[0032] The temperature stress test is to perform airtightness test under different temperature conditions. The temperature changes from T_1 to T_2, and the gas state equation \(PV=nRT\) is used to calculate the gas state change:

[0033] [frac{P_1V}{T_1}=frac{P_2V}{T_2}];

[0034] Where: P_1, T_1 are the initial pressure and temperature, P_2, T_2 are the final pressure and temperature;

[0035] Calculate the change in pressure due to temperature:

[0036] [P_2=P_1\cdot\frac{T_2}{T_1}].

[0037] In a preferred embodiment, the repair work is to formulate a specific repair plan according to the cause of the leakage, including replacing pipes or joints, resealing, repairing according to the plan, and re-testing the air tightness after the repair. The record file is to organize and archive all test results, data records, and repair records, and store the test report in a database.

[0038] In a preferred embodiment, the exhaust gas is to slowly release the detection gas in the system through a pressure relief valve to avoid damage caused by impact. The system is restored by reconnecting the various parts of the liquid cooling system, injecting coolant according to standard procedures, exhausting the air in the system, running the liquid cooling system, and conducting an inspection under normal working conditions.

[0039] The technical effects achieved by the present invention are:

[0040] Use special cleaning fluid and brush to clean the inside and outside of the pipeline to ensure that there is no grease and dust. Use a hair dryer or compressed air to ensure that the pipeline is completely dry. This enhances the cleanliness of the inside and outside of the pipeline and reduces the errors that may occur during the detection process. Use a magnifying glass or microscope to check the key parts to ensure that the pipeline and joints are free of scratches, cracks and damage, especially the inspection of tiny cracks, to ensure the accuracy of the detection to a greater extent. Choose appropriate sealing materials (rubber plugs or special sealants) according to the pipeline material to ensure that the seals completely cover the pipeline opening to prevent leakage and improve the accuracy of the test.

[0041] High-precision air tightness test instruments are used to ensure that the test interface is tightly connected and leak-free, which improves the accuracy and reliability of air tightness testing. Nitrogen or dry air is used as the test gas. The gas pressure is gradually increased by setting the initial pressure and the test target pressure to prevent the impact pressure from damaging the pipeline. This includes initial pressure stabilization and long-term pressure stabilization to ensure that the sealing performance of the pipeline system is verified in various time periods, providing a reliable stability test.

[0042] Comprehensively detect leaks using acoustic detection, spray detection, pressure monitoring and other methods, making leak detection more comprehensive and reliable. Record the pressure change value and pressure change within a time period, calculate the gas leakage, generate a pressure change curve, provide scientific and intuitive data support, and provide a basis for analysis and judgment. Accurately locate the pressure changes found and mark them on the drawings to facilitate accurate repairs, save maintenance time and costs. Through fatigue testing and temperature stress testing, simulate the impact of long-term use and temperature changes on the system to ensure the reliability and durability of the system under various working conditions.

[0043] Develop and record repair plans based on the cause of the leak to ensure that the problem is effectively resolved and subsequently retested to ensure that the repaired system still meets the standards. Ensure that the system is restored to its optimal working condition after testing by exhausting the gas, reconnecting the liquid cooling system, injecting coolant according to standard procedures, and running system inspections. Organize and archive all test results, data records, and repair records to form a test report and store it in the database, providing a detailed reference for subsequent maintenance and quality management. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of a method for performing airtightness detection on a computer liquid cooling pipeline according to the present invention. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0046] See also Figure 1As shown, the present invention provides a method for airtightness detection of a computer liquid cooling pipeline, and the airtightness detection method comprises the following steps:

[0047] Step 1. Preparation: including cleaning the liquid cooling pipes and inspecting the appearance;

[0048] Step 2. Sealing test: including installing port seals and installing testing equipment;

[0049] Step 3. Pressurization test: including injection of test gas and air pressure control;

[0050] Step 4. Testing process: including initial voltage stabilization and long-term voltage stabilization;

[0051] Step 5. Leak detection: including acoustic detection, spray detection, and pressure monitoring;

[0052] Step 6. Detection result analysis: including data analysis and location confirmation;

[0053] Step 7. High-intensity testing: including fatigue testing and temperature stress testing;

[0054] Step 8. Subsequent processing: including repair work and record files;

[0055] Step 9. Final cleanup and recovery: includes exhausting gases and restoring the system.

[0056] To clean the liquid cooling pipes, use a special cleaning fluid and a brush to clean the inside of the pipes, clean the outside of the pipes to remove grease and dust, use a hair dryer or compressed air to ensure that the pipes are completely dry, check whether the pipes and joints have scratches, cracks and damage, and use a magnifying glass or microscope to check key parts to check for tiny cracks.

[0057] When installing the port seal, select the appropriate sealing material according to the pipeline material. The sealing material is a rubber plug or special sealant. Check that the seal completely covers the pipeline opening. When installing the detection equipment, select a high-precision air tightness tester. Use a high-pressure hose and connector to connect the test instrument to the detection interface of the liquid cooling system. Check that the detection interface is tightly connected and there is no leakage.

[0058] The injected test gas is nitrogen or dry air, and the initial injection pressure P_0 is set to 200 kPa, which is gradually increased to the detection target pressure P_1;

[0059] [P_1=k\cdotP_0];

[0060] Where, k is the test pressure multiple, 1.5 or 2;

[0061] Slowly increase the gas pressure through the pressure reducing valve to prevent the impact pressure from damaging the pipeline, and use a pressure gauge to record the pressure value P_t and time t at each stage.

[0062] Preliminary pressure stabilization includes preliminary detection and recording of values. After reaching the predetermined pressure P_1, maintain it for 10-15 minutes to observe whether the pressure is stable. Record the initial pressure value P_0, as well as the time and pressure change Deltat_{preliminary} during the pressure stabilization period. Long-term pressure stabilization is to maintain the pressure for 4-8 hours, and high-intensity detection is extended to 24 hours. Record the pressure P_0 at the beginning and the pressure P_1 at the end, as well as the corresponding time t.

[0063] Acoustic testing uses an ultrasonic leak detector to detect high-frequency sound signals, locate leaks, slowly move the probe along the pipes and joints, and record the specific location of the abnormal sound. Spray testing uses leak detection liquid to spray the detection liquid on all joints, connection points and suspicious parts to observe whether bubbles are generated. Bubbles represent gas leaks. Pressure monitoring uses a high-precision data recording system to automatically analyze pressure change data and generate a pressure change curve graph. The pressure drop during the test is considered qualified within the allowable range, and it is considered a leak if it exceeds the range.

[0064] Data analysis is to record the pressure change value P_i and the pressure change in the time period Deltat, and calculate the gas leakage Q in the detection time period:

[0065] [Q=frac{V}{RT}cdot\frac{DeltaP}{Deltat}]

[0066] Where: Q is the gas leakage (m 3 / s), V is the volume of the container (m 3 ), R is the gas constant J / (mol·K), for air, R≈287J / (kg·K), T is the absolute temperature (K), DeltaP is the pressure change, and Deltat is the time change (s);

[0067] The location is confirmed by analyzing the pressure changes found, determining the leak point, and accurately marking the leak point on the liquid cooling system drawing.

[0068] Fatigue testing is to repeatedly cycle the pressure under different pressure conditions, with pressurization and depressurization cycles once an hour to simulate long-term use;

[0069] Cumulative pressure load P_{cumulative}:

[0070] [P_{accumulated}=N\cdot\DeltaP_c];

[0071] Where N is the number of cycles, and DeltaP_c is the pressure change in each cycle;

[0072] The temperature stress test is to conduct airtightness test under different temperature conditions. The temperature changes from T_1 to T_2, and the gas state equation \(PV=nRT\) is used to calculate the gas state change:

[0073] [frac{P_1V}{T_1}=frac{P_2V}{T_2}];

[0074] Where: P_1, T_1 are the initial pressure and temperature, P_2, T_2 are the final pressure and temperature;

[0075] Calculate the change in pressure due to temperature:

[0076] [P_2=P_1\cdot\frac{T_2}{T_1}].

[0077] The repair work is to formulate a specific repair plan according to the cause of the leak, including replacing pipes or joints, resealing, repairing according to the plan, and re-testing the air tightness after the repair. The record archive is to organize and archive all test results, data records, and repair records, and store the test report in the database.

[0078] Exhaust gas is to slowly release the test gas in the system through the pressure relief valve to avoid damage caused by impact. System recovery is to reconnect the parts of the liquid cooling system, inject coolant according to standard procedures, exhaust the air in the system, run the liquid cooling system, and conduct inspections under normal working conditions.

[0079] In the present invention, a special cleaning fluid and a brush are used to clean the inside and outside of the pipeline to ensure that there is no grease and dust. A hair dryer or compressed air is used to ensure that the pipeline is completely dry, which enhances the cleanliness of the inside and outside of the pipeline and reduces the errors that may occur during the detection process. A magnifying glass or a microscope is used to check the key parts to ensure that the pipeline and the joints are free of scratches, cracks and damage, especially the inspection of tiny cracks, to ensure the accuracy of the detection to a greater extent. According to the pipeline material, a suitable sealing material (rubber plug or special sealant) is selected to ensure that the seal completely covers the pipeline opening to prevent leakage and improve the accuracy of the test.

[0080] High-precision air tightness test instruments are used to ensure that the test interface is tightly connected and leak-free, which improves the accuracy and reliability of air tightness testing. Nitrogen or dry air is used as the test gas. The gas pressure is gradually increased by setting the initial pressure and the test target pressure to prevent the impact pressure from damaging the pipeline. This includes initial pressure stabilization and long-term pressure stabilization to ensure that the sealing performance of the pipeline system is verified in various time periods, providing a reliable stability test.

[0081] Comprehensively detect leaks using acoustic detection, spray detection, pressure monitoring and other methods, making leak detection more comprehensive and reliable. Record the pressure change value and pressure change within a time period, calculate the gas leakage, generate a pressure change curve, provide scientific and intuitive data support, and provide a basis for analysis and judgment. Accurately locate the pressure changes found and mark them on the drawings to facilitate accurate repairs, save maintenance time and costs. Through fatigue testing and temperature stress testing, simulate the impact of long-term use and temperature changes on the system to ensure the reliability and durability of the system under various working conditions.

[0082] Develop and record repair plans based on the cause of the leak to ensure that the problem is effectively resolved and subsequently retested to ensure that the repaired system still meets the standards. Ensure that the system is restored to its optimal working condition after testing by exhausting the gas, reconnecting the liquid cooling system, injecting coolant according to standard procedures, and running system inspections. Organize and archive all test results, data records, and repair records to form a test report and store it in the database, providing a detailed reference for subsequent maintenance and quality management.

[0083] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A method for airtightness detection of a computer liquid cooling pipeline, characterized in that: The method for airtight detection comprises the following steps: Step 1. Preparation: including cleaning the liquid cooling pipes and inspecting the appearance; Step 2. Sealing test: including installing port seals and installing testing equipment; Step 3. Pressurization test: including injection of test gas and air pressure control; Step 4. Testing process: including initial voltage stabilization and long-term voltage stabilization; Step 5. Leak detection: including acoustic detection, spray detection, and pressure monitoring; Step 6. Detection result analysis: including data analysis and location confirmation; Step 7. High-intensity testing: including fatigue testing and temperature stress testing; Step 8. Subsequent processing: including repair work and record files; Step 9. Final cleanup and recovery: including exhausting gas and system recovery; The data analysis is to record the pressure change value P_i and the pressure change in the time period Deltat, and calculate the gas leakage Q in the detection time period: [Q=frac{V}{RT}cdot\frac{DeltaP}{Deltat}] Where: Q is the gas leakage (m 3 / s), V is the volume of the container (m 3 ), R is the gas constant J / (mol·K), for air, R≈287J / (kg·K), T is the absolute temperature (K), DeltaP is the pressure change, and Deltat is the time change (s); The position confirmation is to analyze the pressure changes found, determine the leakage point, and accurately mark the leakage point on the drawings of the liquid cooling system; The fatigue test is to repeatedly cycle the pressure under different pressure conditions, with pressurization and depressurization cycles once every hour to simulate long-term use; Cumulative pressure load P_{cumulative}: [P_{accumulated}=N\cdot\DeltaP_c]; Where N is the number of cycles, and DeltaP_c is the pressure change in each cycle; The temperature stress test is to perform airtightness test under different temperature conditions. The temperature changes from T_1 to T_2, and the gas state equation \(PV=nRT\) is used to calculate the gas state change: [frac{P_1V}{T_1}=frac{P_2V}{T_2}]; Where: P_1, T_1 are the initial pressure and temperature, P_2, T_2 are the final pressure and temperature; Calculate the change in pressure due to temperature: [P_2=P_1\cdot\frac{T_2}{T_1}]; The cleaning of the liquid cooling pipeline is to use a special cleaning fluid and a brush to clean the inside of the pipeline, clean the outside of the pipeline, remove grease and dust, use a hair dryer or compressed air to ensure that the pipeline is completely dry, check whether the pipeline and joints have scratches, cracks and damage, and use a magnifying glass or microscope to check key parts to check whether there are tiny cracks; The installation port seal is to select a suitable sealing material according to the pipeline material, the sealing material is a rubber plug or a special sealant, and check that the seal completely covers the pipeline opening. The installation detection equipment is to select a high-precision air tightness tester, use a high-pressure hose and a joint to connect the test instrument to the detection interface of the liquid cooling system, and check that the detection interface is tightly connected and has no leakage; The injected test gas is nitrogen or dry air, and the initial injection pressure P_0 is set to 200 kPa, which is gradually increased to the detection target pressure P_1; [P_1=k\cdotP_0]; Where, k is the test pressure multiple, 1.5 or 2; Slowly increase the gas pressure through the pressure reducing valve to prevent the impact pressure from damaging the pipeline, and use a pressure gauge to record the pressure value P_t and time t at each stage; The preliminary pressure stabilization includes preliminary detection and recording of values. After reaching the predetermined pressure P_1, maintain it for 10-15 minutes to observe whether the pressure is stable. Record the initial pressure value P_0, as well as the time and pressure change Deltat_{preliminary} during the pressure stabilization. The long-term pressure stabilization is to maintain the pressure for 4-8 hours, and the high-intensity detection is extended to 24 hours. Record the pressure P_0 at the beginning and the pressure P_1 at the end, as well as the corresponding time t.

2. A method for airtightness detection of a computer liquid cooling pipeline according to claim 1, characterized in that: The acoustic detection is to use an ultrasonic leak detector to detect high-frequency sound signals, locate the leakage point, slowly move the probe along the pipeline and joints, and record the specific location of the abnormal sound. The spray detection is to use a leak detection liquid to spray the detection liquid on all joints, connection points and suspicious parts to observe whether there are bubbles. Bubbles represent gas leakage. The pressure monitoring is to use a high-precision data recording system to automatically analyze the pressure change data and generate a pressure change curve graph. The pressure drop during the detection is considered qualified within the allowable range, and it is determined to be a leak if it exceeds the range.

3. The method for airtightness detection of a computer liquid cooling pipeline according to claim 1, characterized in that: The repair work is to formulate a specific repair plan according to the cause of the leakage, including replacing pipes or joints, resealing, repairing according to the plan, and re-testing the air tightness after the repair. The record file is to organize and archive all test results, data records, and repair records, and store the test report in the database.

4. The method for airtightness detection of a computer liquid cooling pipeline according to claim 1, characterized in that: The exhaust gas is to slowly release the detection gas in the system through the pressure relief valve to avoid damage caused by impact. The system recovery is to reconnect the various parts of the liquid cooling system, inject coolant according to standard procedures, exhaust the air in the system, run the liquid cooling system, and conduct an inspection under normal working conditions.

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