Pipe joint leakage detector

Abstract

The invention discloses a pipe joint leakage detector which comprises a helium tank, a stop valve, a buffer tank, a collecting gas bag and a helium mass spectrometer leak detector, wherein an outlet of the helium tank is connected with one end of the stop valve, and the other end of the stop valve is connected with an inlet of the buffer tank; a pressure meter is connected onto the buffer tank; a pipe joint connecting mechanism is arranged at the top of the buffer tank and comprises a connecting flange, a pressing plate, a first gasket and a second gasket; the connecting flange is fixed at the top of the buffer tank; the pressing plate is arranged above the connecting flange; the second gasket is arranged on the lower end surface of the pressing plate; the first gasket is arranged on the upper end surface of the connecting flange; a pipe joint is arranged between the first gasket and the second gasket; through holes are formed in centers of the connecting flange and the first gasket; the pressing plate is fixedly connected with the connecting flange through fastening pieces; the collecting gas bag is arranged outside the possible leaking part of the pipe joint in a sleeving manner; and a suction gun of the helium mass spectrometer leak detector is communicated with the collecting gas bag. The pipe joint leakage detector can detect leakage of the pipe joint and has high detection sensitivity, accuracy and efficiency.

Description

technical field [0001] The invention belongs to the technical field of leakage detection, and in particular relates to a pipe joint leakage detection device. Background technique [0002] As a transition joint, pipe joints are widely used in petroleum, chemical, shipbuilding, aerospace, military, machinery, construction, medicine and other industries. The main types are: hydraulic hose joints, ferrule-type pipe joints, welded pipe joints, Explosive composite pipe joints, threaded pipe joints, etc. In some application occasions, the sealing performance of the part between the two pipes constituting the pipe joint (that is, the part where the pipe joint may leak) is very high, and no leakage is allowed. At present, the main way to detect the leakage of pipe joints is the underwater leak detection method. The underwater leak detection method is to seal the two ends of the pipe joint, fill the pipe joint with compressed air, place the possible leaking part of the pipe joint in ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a pipe joint leakage detection device, which has a simple structure, reasonable design, and convenient use and operation, and solves the problem that the pipe joint with a small amount of leakage cannot be detected in the prior art. problem, high detection sensitivity, high detection accuracy, high detection efficiency

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