Sniffer probe of a suction nitrogen-hydrogen leak detector

Abstract

The invention provides a suction gun probe of a suction type nitrogen and hydrogen leak detector. The suction gun probe comprises an outer housing, a suction end, a spring, an elevating bolt, a blowing connector. The two ends of the outer housing are respectively provided with an end cover and an opening. The suction end is disposed in the outer housing in a sleeved manner, and a gap is arranged between the suction end and the inner wall of the outer housing, and a gap or a slit is arranged between the suction end and the opening in the lower end of the outer housing, and the middle part is provided with a gas pipe, which is connected with a sensor and a signal line. The spring is disposed between the end cover and the suction end in a compressed manner. One end of the elevating bolt is fixedly connected with the suction end, and the other end of the elevating bolt is extended out of the outer housing by passing through an elevating hole in the side wall of the outer housing. The elevating bolt is capable of carrying out an up and down reciprocating motion along the elevating hole, and at the same time, is capable of driving the suction end to carry out the up and down reciprocating motion in the outer housing. The blowing connector is provided with a blowing channel communicated with the gap. By adopting the suction gun probe provided by the invention, the suction type nitrogen and hydrogen leak detector is capable of normally working in a high concentration environment.

Description

technical field [0001] The invention belongs to the technical field of leak detection, and in particular relates to a sniffer probe capable of enabling a suction-type nitrogen-hydrogen leak detector to work under a high-concentration environmental background and a motion state. Background technique [0002] The inhalation nitrogen-hydrogen leak detector is a detection instrument that judges whether there is a leak by absorbing the tracer gas leaked from the surface of the measured object. Leak detection operations are usually performed in the general environment of the industrial site, and the detection accuracy is easily affected by the environmental background, especially when the detection is performed in a high-concentration environmental background and in a motion state, the reliability is low. On the one hand, when the leak detector inhales the tracer gas, it will also inhale the air of the environmental background. The composition of the environmental background is co...

AI Technical Summary

Problems solved by technology

Leak detection operations are usually operated in the general environment of the industrial site, and the detection accuracy is easily affected by the environmental background, especially when the detection is performed under high-concentration environmental background and motion state, the reliability is low

On the one hand, when the leak detector inhales the tracer gas, it will also inhale the air of the environmental background. The composition of the environmental background is complex and unstable, and may contain some elements of the tracer gas, especially at high The tracer gas will be obviously diluted or disturbed under the concentration environment; on the other hand, when the leak detector is working in a motion state, the tracer gas is more affected by the instability of the motion state, dispersing or reducing the amount entering the leak detector, detection error

In order to minimize the impact of the above objective factors, when using a suction nitrogen-hydrogen leak detector for leak detection, the user's site is generally required to be ventilated and the gas is clean, but most of the operating environments are difficult to meet the above requirements, and the control of the user's site environment is often cumbersome. manpower and material resources to adjust and control

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