Full-featured airtight tester

Abstract

The invention relates to a full-functional air-tightness tester. The full-functional air-tightness tester mainly comprises a main control system, a display terminal assembly, an input assembly, an output assembly, a communication assembly and an air path detection assembly, wherein the main control system is respectively and electrically connected with the display terminal assembly, the input assembly, the output assembly and the communication assembly; the air path detection assembly is sequentially connected with an oil fog separator, a precise pressure adjusting valve, a precise filtering device, a first pressure sensor, a first solenoid valve, a second pressure sensor and a flow sensor from an air source to a detected product by pipelines according to an air flowing direction. The full-functional air-tightness tester has the advantages that the tester has the function of detecting a pressure difference and a flow in a time division manner, and adopts a method of utilizing the independent pressure sensors to measure pressure values in the time division manner so as to calculate the pressure; a testing result is not influenced by other devices and has the better precision; and a direct testing method is used for measuring a flow tester, the testing result is very accurate, the repeated measurement precision is very high, the testing speed is fast and the service life is long.

Description

technical field [0001] The invention relates to an airtightness quantitative testing instrument, in particular to a full-function airtightness testing instrument. Background technique [0002] Under the background of the current transformation of the growth mode of the economic structure and the upgrading and transformation of the industrial structure in various industries, the desire of the market to eliminate low-level technology and equipment is becoming stronger and stronger, and there will be a very large demand for high-precision instruments and equipment. It is of great significance to update and realize more optimized control of products, thereby reducing faults, improving product quality, and enhancing market competitiveness. [0003] At present, most of the sealing performance testing equipment used in China is imported from abroad. The price is expensive and there is considerable dependence on the maintenance of the instrument. The traditional testing equipment fo...

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Problems solved by technology

During the testing process of this method, it is necessary to accurately calculate the internal volume of the product; the equipment must maintain a constant temperature; Test results; if the outside temperature changes, the volume of the air will change, resulting in inaccurate test results; during the test, the instrument does not pressurize the product, from the countdown of the stabilization time to the end of the test, the inside of the product is No further pressurization, so as to count the pressure difference during this time period, so the length of time directly affects the test results, because the longer the time, the greater the pressure difference, and the test results will change with time; if the pipeline vibrates , will cause pressure changes in the pipeline, which will affect the test results

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