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Recently, byShenzhen Hairuisi Automation Technology Co., Ltd.It was jointly formulated by 6 other related companies and SGS-CSTC Standardization Technology Research Institute (Beijing) Co., Ltd.T/CIET 20-2023 "DC Motor Air Tightness Automatic Test Equipment" group standard,throughChina Association for the Promotion of International Economic and Technical CooperationOfficially released after review.

This standard specifiesDC motor air tightness automatic testing equipmentRelevant terms, models and basic parameters, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements.

Partial excerpt of technical requirements for automatic testing of air tightness of DC motors:

It adopts positioning tooling to fix the motor, high elastic sealing ring + profiling cavity, and the vacuum generator uses a high-power oil-free vacuum pump to provide a vacuum negative pressure environment to simulate the on-site use environment.Different vacuum values ​​and test times can also be adjusted according to different customer requirements to accurately measure whether the air-tight leakage value of the motor meets the specified requirements under this vacuum negative pressure state.

The functional indicators of airtight automatic testing equipment should meet the following conditions:

Pressure gauge calibration:

Before being put into use, a qualified pressure gauge must be used for calibration; after use, the pressure gauge must be calibrated once a year.

Single cycle operation efficiency:

Adjust the holding time of the high-precision digital pressure gauge to the specified parameter value. The unit time of one test cycle is the slowest single-cycle operation efficiency.

Repeatable measurement accuracy of vacuum negative pressure value:

Take any product and put it into the positioning tooling, and repeat the test 10 times to get the measurement error to meet the test requirements.

Noise (sound pressure level, dB(A)):

Place the equipment in a silent room. The test is conducted when the equipment is in standby mode. Multiple workstations are tested at the same time. The equipment is started normally at a distance of 1 meter from the surface of the equipment and 1/2 of the height of the equipment. A hand-held ordinary sound level meter is used to detect noise in 4 directions in accordance with the test requirements.

Measurement data is recorded 100% automatically in real time:

Continuously test 100 products to see if there are 100 data stores.

As one of the drafting units, Hairis was founded in 2008. It is the first unit in China to draft the "Enterprise Standard for Waterproof Leakage Detection" and is also the main drafting unit for the national "Waterproof Performance Experiment of Electrical and Electronic Products - Air Pressure Law" T/CSIQ 68001-2020 national standard revision.

Hairuis has more than 30 patents and copyrights and industry testing experience in multiple fields. Its independently developed air tightness testing equipment is exported to more than 50 countries and regions at home and abroad.

Keep moving forward and look forward to the future.In order to fulfill the mission of "taking Chinese equipment to the world" that we share with tens of millions of companies, Hairuis will continue to increase investment in research and development, continuously increase innovation efforts, expand the company's core competitiveness, strive to make up for the shortcomings of the company's industrial chain, improve its own product system, and strive to create more value to give back to customers and society.