Embedded leakage detector

A leak detector and embedded technology, which is applied in the direction of measuring the rate of increase and deceleration of the fluid, and using the liquid/vacuum degree to measure the liquid tightness, etc., can solve the problems of low measurement accuracy and leak detection reliability, and achieve improvement Detection accuracy, convenient operation, and cost-saving effects

Inactive Publication Date: 2008-08-06
SHANGHAI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide an embedded leak detector aiming at the defects of the existing leak detection reliability and low measurement accuracy

Method used

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Embodiment Construction

[0017] A preferred embodiment of the present invention is: see Fig. 1 and Fig. 2. The embedded leak detector includes an air source connector 1' for connecting the air source 1, a pressure regulator 3, a two-position three-way solenoid valve 6, a two-position two-way solenoid valve 7, and a detection device for connecting the detection piece 11. The direct pressure method detection pneumatic control circuit composed of the component joint 11'; the above-mentioned direct pressure method circuit and the pressure regulator 18, the two-position two-way solenoid valve 15, the pressure switch 14, and the reference component form the differential pressure method detection pneumatic control circuit. The pressure gauge 4 shows the value of the pressure regulator 3, the exhaust port 5 and the exhaust port 10 play a pressure limiting role, the pressure gauge 17 shows the value of the pressure regulator 18, and the exhaust port 16 plays a pressure limiting role. Vent 2 discharges the high...

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Abstract

The invention relates to a flush type leakage detector which comprises an air supply joint, a detecting member joint and a reference member joint. A direct method pneumatic control circuit from the air supply joint to the detecting member joint and a differential pressure method pneumatic control circuit from the air supply joint to the reference member joint are provided. An electromagnetic valve, a pressure sensor, a temperature sensor, a differential pressure sensor and a pressure switch are arranged on the two circuits and are connected to a core control panel to form a control system and a data acquisition and processing system. Through the pressure switch which controls the differential pressure method pneumatic control circuit to be conducted and closed, the flush type leakage detector can conveniently change and select the two detection methods with different detection principles. Furthermore, the flush type leakage detector can also remove the impact of temperature changes on detection results during the leakage detection.

Description

technical field [0001] The invention relates to a leak detection device, in particular to an embedded leak detection device capable of adjusting the detection principle. Background technique [0002] The airtightness of industrial products characterized by mass production is a technical index closely related to product quality, and has attracted increasing attention from enterprises in recent years. Leakage caused by poor sealing will lead to problems such as product failure, reduced efficiency, shortened life, and environmental pollution. Therefore, leak detection is very important, and the level of leak detection technology will directly affect production efficiency, labor intensity of operators and product quality. With the improvement of manufacturing level and manufacturing process requirements, more and more requirements are put forward for leak detection. high demands. [0003] In the early days, "water immersion leak detection" was used to find unqualified workpiec...

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Application Information

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IPC IPC(8): G01M3/26
Inventor 杨三华李居峰周凯叶萍周林灿徐常恺姚道敏
Owner SHANGHAI UNIV
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