CN-121994470-A - Data center liquid cooling quick connector interchangeability and reliability test method

CN121994470ACN 121994470 ACN121994470 ACN 121994470ACN-121994470-A

Abstract

The invention discloses a test method for interchangeability and reliability of a liquid-cooled quick connector of a data center, which relates to the technical field of liquid cooling of the data center and comprises the following steps of S1, key size measurement, S2, high-low temperature alternating test, S3, cold-hot impact test, S4, vibration and impact test, S5, corrosion resistance test, S6, pressure pulse test, S7, pressure drop test, S8, connection force and disconnection force test, S9, air infiltration test, S10, fluid loss test, S11, durability test, S12 and explosion test. The data center liquid cooling quick connector interchangeability and reliability testing method constructs a complete testing method of a system, covers key elements such as testing environment, testing flow, special testing tools and the like, screens and establishes a plurality of connector key performance indexes as judging standards of testing results, and has wide applicability.

Inventors

XIE LINA
GUO LIANG
LI JIE
SHAO JIANFENG
LIU XINNING
XING YUPING
ZHANG MEIQI

Assignees

中国信息通信研究院

Dates

Publication Date: 20260508
Application Date: 20260225

Claims (10)

1. The method for testing the interchangeability and reliability of the liquid-cooled quick connector of the data center is characterized by comprising the following steps of: S1, measuring a critical dimension, namely performing appearance and internal inspection on a quick connector sample, measuring the critical dimension by using a tool, and recording data; s2, high-low temperature alternating test, namely placing a quick connector sample into an environmental test box, and performing repeated cyclic change from high temperature to low temperature; s3, performing cold and hot impact testing, namely placing the quick connector in a limiting temperature environment, maintaining for a certain time, then performing high-low temperature quick switching, and circulating for a plurality of times; S4, vibration and impact testing, namely performing vibration and impact testing on the inserted quick connector, and simulating vibration and impact environments in the transportation or use process; s5, corrosion resistance test, namely placing the quick connector sample in a salt fog environment for a certain time, and simulating severe scenes such as seaside and the like; s6, performing pressure pulse test, namely performing high-pressure and low-pressure pulse test on the quick connector, and simulating impact scenes such as water hammer; s7, pressure drop testing, namely measuring the pressure drop of the quick connector under different flow through a testing system, and drawing a pressure drop flow curve; s8, testing the connection force and disconnection force, namely measuring the connection force and disconnection force of the quick connector under normal pressure and under a state of pressure; S9, air infiltration testing, namely evaluating the tightness of the quick connector by measuring the air infiltration amount of the quick connector after multiple plugging; S10, fluid loss testing, namely evaluating the fluid control capacity of the quick connector by measuring the fluid loss value of the quick connector after multiple plugging and unplugging; S11, performing durability test, namely performing repeated plugging and unplugging cycle test on the quick connector and measuring the leakage rate of the quick connector; s12, explosion test, namely gradually pressurizing the quick connector until the explosion pressure is reached, and observing the performance of the quick connector; The specific operation of the step S1 is as follows: a. Performing appearance inspection and internal inspection on the quick connector sample; b. Measuring the critical dimension of the quick connector sample by using a tool; c. recording size data; The specific operation of the step S2 is as follows: a. putting the disconnected state male and female heads and the connected state male and female heads into an environment test box; b.0-3 h, namely heating to 70 ℃ and 95% of humidity; c, maintaining the temperature at 70 ℃ and the humidity at 95% for 3-12 h; d, cooling to-40 ℃ for 12-18 h, wherein the humidity is 95%; e, maintaining the temperature at-40 ℃ for 18-24 h; f. Repeating the steps b-e for 10 times; g. taking out the sample, checking the appearance and recording; the specific operation of the step S3 is as follows: a. removing the plug and the socket dust cover, and then placing the plug and the socket dust cover into a temperature box, wherein the quick connector is not pressurized; b. Setting a limiting temperature value of-55 ℃ and 125 ℃, keeping the limiting temperature for 30min and circulating for 100 times, wherein the temperature conversion time is not more than 5min; c. A temperature impact test was performed.
2. The method for testing interchangeability and reliability of liquid-cooled quick connectors of data centers according to claim 1, wherein the specific operation of step S4 is as follows: the vibration testing method comprises the following steps: a. The plug and the socket are rigidly arranged on the comprehensive vibration test bed after being inserted and combined, and are connected with the pressure testing pump to be filled with cooling liquid, and the internal pressure of the connector is kept to be 0.3MPa; b. Setting the vibration frequency of the test bed, wherein the vibration frequency is 5 Hz-500 Hz, the initial excitation acceleration is more than or equal to 2grms, the duration time of each axial direction of XYZ is 20min, and the whole frequency range is about 1min; the impact test method comprises the following steps: a. The plug and the socket are rigidly arranged on the comprehensive vibration test bed after being inserted and combined, and are connected with the pressure testing pump to be filled with cooling liquid, and the internal pressure of the connector is kept to be 0.3MPa; b. The method comprises the steps of setting the impact parameters of a test bed, wherein the impact acceleration is 7.5g, the impact time is 19ms, the positive and negative directions of each axis of the XYZ axes are impacted for 3 times, and the interval between the impact time and the impact time is not less than 20s.
3. The method for testing interchangeability and reliability of liquid-cooled quick connectors of data centers according to claim 1, wherein the specific operation of step S5 is as follows: a. The appearance inspection of the quick connector is carried out, and no obvious abnormality or flaw exists; b. after the inspection is finished, removing a screw thread port protective sleeve and an opposite-plug side protective sleeve of the quick connector sample, and placing a male head monomer and a female head monomer of the quick connector into a neutral salt spray test box; c. Performing a first salt spray experiment, placing all quick connector samples in constant salt spray for 24 hours, then taking out and standing in dry air for 24 hours, carefully observing the conditions of all the quick connector samples, and recording; d. A second salt spray experiment was performed and all quick connector samples were kept in a constant salt spray for 48 hours, then removed and left in dry air for 48 hours, and all quick connector samples were carefully observed and recorded.
4. The method for testing interchangeability and reliability of liquid-cooled quick connectors for data centers according to claim 1, wherein the specific operation of step S6 is as follows: a. before testing, measuring the leakage rate of the male head, the female head and the male and female plug of the quick connector in the plugging state, wherein the leakage rate is required to be less than or equal to 1.0E-6pa.m3/s; b. The joint with the leakage rate meeting the requirement is respectively connected into a pressure pulse testing machine according to the butt joint state of the male head and the female head, and the testing pulse range is set to be 0.1Mpa for low pressure, 1.0Mpa for high pressure, 1Hz for frequency of 25 ten thousands times; c. The joints were pulsed.
5. The method for testing interchangeability and reliability of liquid-cooled quick connectors for data centers according to claim 1, wherein the specific operation of step S7 is as follows: a. the pipeline adapting to the path of the tested quick-change connector is directly connected to the test system; b. according to a theoretical flow curve and a theoretical rated flow value of 6.44L/min, selecting a sampling gradient from 30% to 150%, setting automatic operation, testing and recording the pressure drop of the testing system under the theoretical flow, and inputting the measured pressure drop of the system into a pipe loss table; c. installing a quick-change connector in the system shown in the step 1, selecting a sampling gradient from the theoretical flow rate to 6.44L/min, setting automatic pipe loss reduction operation from 30% to 150%, testing and recording flow resistance data and cv values from the male head to the female head and from the female head to the male head; d. drawing a net pressure drop flow curve of each flow direction according to the test parameters, wherein an X axis represents flow and a Y axis represents pressure drop; e. If the pressure drop value of either flow through the quick-change coupling in one direction differs by less than 10% from the pressure drop in the other direction through the quick-change coupling, the higher of these two values should be used; f. The minimum cv value for each pair of joints was recorded.
6. The method for testing interchangeability and reliability of liquid-cooled quick connectors for data centers according to claim 1, wherein the specific operation of step S8 is as follows: a. The quick-change connector is connected to a plug test bed, and the central position of the male and female connectors is adjusted to be on the same central line; b. The system is communicated with the atmosphere, the connector is adjusted to be in a complete conduction state under normal pressure, the position of the connector at the moment is recorded, and the position is input into a test position in equipment parameters; c. Performing a plug test and recording a maximum force value in the test process; d. the test was repeated with a pressure of 3bar and the force values recorded.
7. The method for testing interchangeability and reliability of liquid-cooled quick connectors for data centers according to claim 1, wherein the specific operations of step S9 are as follows: a. the connector is connected with a plug test bed, and the central position of the male connector and the female connector is adjusted to be on the same central line; b. the female connector is fixed at the upper end, the upper part is connected with the closed container, the male connector is fixed at the lower end and communicated with the atmosphere through a pipeline, no pressure is applied, the connector is adjusted to be in a complete conduction state, the position of the connector at the moment is recorded, and the position is input into a test position in equipment parameters; c. recording a reading of the fluid level in the graduated container when it is consistent; d. after 1000 connections without pressure, recording the fluid level readings in the closed container; e. subtracting the reading in d from c, dividing the difference value by the connection times, and obtaining the calculated value as the air infiltration amount of each connection.
8. The method for testing interchangeability and reliability of liquid-cooled quick connectors for data centers according to claim 1, wherein the specific operation of step S10 is as follows: a. The quick-change connector is connected to a plug test bed, and the central position of the male and female connectors is adjusted to be on the same central line; b. The system is communicated with the atmosphere, the connector is adjusted to be in a complete conduction state under normal pressure, the position of the connector at the moment is recorded, and the position is input into a test position in equipment parameters; c. under the connection state of the connector, removing bubbles in the connecting container filled with liquid, recording a scale value x1, and then performing a plugging cycle test; d. Repeating the above operation and reading the scale value x2 after 1000 times of circulation; e. The scale value in x2 is subtracted from x1 and divided by the number of cycles to obtain the fluid loss value for each connection.
9. The method for testing interchangeability and reliability of liquid-cooled quick connectors for data centers according to claim 1, wherein the specific operation of step S11 is as follows: a. The quick-change connector is connected to a plug test bed, and the central position of the male and female connectors is adjusted to be on the same central line; b. The system is communicated with the atmosphere, the connector is adjusted to be in a complete conduction state under normal pressure, the position of the connector at the moment is recorded, and the position is input into a test position in equipment parameters; c. under the connection state of the connector, removing bubbles in the connecting container filled with liquid, and then performing a plugging cycle test; d. After 500 cycles, the leak rate test was performed, held for 5min with a pressure decay of no more than 1% and the actual value was recorded.
10. The method for testing interchangeability and reliability of liquid-cooled quick connectors for data centers according to claim 1, wherein the specific operations of step S12 are as follows: a. connecting the male connector to a pressure output port of a test bed, conducting the male connector with a female connector to enable the male connector to be communicated with the atmosphere, pre-filling water into the tested male connector by a test pump, ensuring water to flow out, and discharging air; b. if the test is normal, continuously boosting to 80bar and maintaining the pressure for 5 minutes, and observing whether the value of the pressure gauge changes or not and whether the joint connection leaks or not; c. and (3) taking down the quick connector, visually checking the surface of the quick connector to see whether damage occurs, manually continuously plugging for 5 times, and observing whether the plugging is smooth and whether the valve core is normally reset.

Description

Data center liquid cooling quick connector interchangeability and reliability test method Technical Field The invention relates to the technical field of data center liquid cooling, in particular to a method for testing interchangeability and reliability of a data center liquid cooling quick connector. Background The hand-inserted quick connector is used as a key functional component for realizing the on-off control of a server liquid cooling pipeline in a data center cold plate type liquid cooling system, and the self performance and the exchange capacity of the hand-inserted quick connector practically influence the deployment cost and the operation stability of the liquid cooling system. At present, the industry sets requirements and test methods for hand-inserted quick connectors, and the specific conditions are as follows: Firstly, the open calculation project of OCP initiated by Meta combined Intel, RACK SPACE, gao Cheng and Arista Networks defines the universal interface standard of UQD (universal hand-inserted quick connector) and defines the specification parameter ranges of the size, the drift diameter, the flow resistance, the leakage quantity and the like of the quick connector. However, the OCP UQD1.0 specification only specifies technical indexes such as the size, the drift diameter, the flow rate, etc. of the joint monomer, and the verification mode belongs to compliance inspection, and no systematic testing tool and testing method have been provided yet, and the coverage of the specification is limited. Secondly, the international standardization organization issues ISO 18869:2017 on testing methods of hydraulic fluid power-shaft couplings with or without tool driving, prescribes testing and evaluating methods of quick joint performance in hydraulic fluid power applications, and test items include pressure pulse, connection force and disconnection force, corrosion resistance, durability, pressure drop test and the like. However, although ISO 18869:2017, "test method of hydraulic drive-quick-change connector with or without tool drive", systematically lists various test items of liquid-cooled hand-inserted quick-change connector, the focus is still limited to the performance and reliability of a single product, and does not relate to various performances of products of different manufacturers in the inter-fit state. In addition, the standard only provides a schematic diagram of the test tool, and the specific test tool, test flow and judgment criteria of test results are not explicitly specified. Disclosure of Invention The invention aims to provide a test method for interchangeability and reliability of a liquid-cooled quick connector of a data center, which aims to solve the problems in the background technology. In order to achieve the above purpose, the invention provides a set of complete testing method and standardized testing flow based on the prior art, definitely defines the special testing tool requirements and the judging criteria of the testing results, can effectively verify the monomer performance of the liquid cooling hand-inserted quick connector, evaluates the inter-fit characteristics and reliability performances of connectors of different manufacturers after being arbitrarily combined, and provides technical basis and reference standard for developing similar tests and product type selection in industry. The specific technical scheme is that the method for testing the interchangeability and reliability of the liquid-cooled quick connector of the data center comprises the following steps of. Further, the specific operation of step S1 is as follows: a. Performing appearance inspection and internal inspection on the quick connector sample; b. Measuring the critical dimension of the quick connector sample by using a tool; c. recording size data; The judging standard includes checking the appearance, no burr, scratch, etc, no defect, and meeting the requirement. Further, the specific operation of step S2 is as follows: a. putting the disconnected state male and female heads and the connected state male and female heads into an environment test box; b.0-3 h, namely heating to 70 ℃ and 95% of humidity; c, maintaining the temperature at 70 ℃ and the humidity at 95% for 3-12 h; d, 12-18 h, cooling to-40 ℃ and controlling the humidity to 95% (the humidity below 25 ℃ is not controlled); e, maintaining the temperature at-40 ℃ for 18-24 h; f. Repeating the steps b-e for 10 times; g. taking out the sample, checking the appearance and recording; The judgment standard is that the appearance of the sample is not damaged, and the sample can be normally plugged and pulled out without jamming after the normal temperature is recovered. Further, the specific operation of step S3: a. removing the plug and the socket dust cover, and then placing the plug and the socket dust cover into a temperature box, wherein the quick connector is not pressurized; b. Setting a limiting temperature value of-55 ℃