Automobile expansion tank pressure relief cover reliability test method and system

Abstract

The invention relates to the technical field of service life tests of automobile expansion tank pressure relief covers, in particular to an automobile expansion tank pressure relief cover reliability test method and system. The system structurally comprises an expansion tank installed on a vibration test table fixing support with a vibration device. The expansion tank is provided with a pressure relief cover and connected with a heating device through a pipeline. An air flow sensor is arranged on the pressure relief cover. A temperature sensor connected with a temperature measurement instrument is arranged in the heating device. A pressure sensor connected with a pressure measurement instrument is arranged in the expansion tank. The vibration device, the air flow sensor, the temperature measurement instrument and the pressure measurement instrument are electrically connected with a programmable logic controller. According to the automobile expansion tank pressure relief cover reliability test method and system, the pressure value, the temperature value and time are measured and compared with the standard range of a test tank for judgment, so that whether the pressure relief cover is qualified or not is accurately and visually observed.

Description

technical field [0001] The invention relates to the technical field of service life testing of a pressure relief cover of an automobile expansion water tank, in particular to a reliability test method and system for a pressure relief cover of an automobile expansion water tank. Background technique [0002] Under the existing technology, the country has corresponding national standards for the service life of the pressure relief cover of the automobile expansion tank. In order to verify the reliability of the product, a simulation system will be used to test the reliability of the pressure relief cover of the automobile expansion tank The test principle is as follows: [0003] Under certain conditions, with a closed circulation system (including heating equipment and expansion tank) with a certain volume of coolant, when the heating temperature of the system rises, the pressure in the system rises, and when the opening pressure of the pressure relief cap is reached, the pres...

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Problems solved by technology

[0004] When using the above principle to carry out the reliability test of the pressure relief cover of the automobile expansion tank, the common proble

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