Liquid nitrogen detection device and operation method thereof

Abstract

The invention relates to a liquid nitrogen detection device and an operation method thereof. The detection device comprises a main body, at least one conversion body, at least one detecting sensor, atleast one seal cover, and at least one stopping ball. The main body is a pipe body; a step is circumferentially arranged on an inner wall of the end part of the main body; the conversion body is inserted into an end port of one end in the main body; a step fixed to the step on the end part of the main body is arranged on an outer wall of the rear end of the conversion body in a protruding way; the conversion body is provided with a conical center channel along an axial direction; an inlet aperture of the conversion body is larger than an outlet aperture of the conversion body; the detecting sensor is used for detecting bubble quantity, is arranged in the main body, and directly faces an outlet of the conversion body in the main body; the seal cover comprises a cover body and a liquid nitrogen in-out pipe located in the center of the outer end surface of the cover body; the cover body covers the end part of the main body; the stopping ball is arranged in the center channel of the conversion body; and the diameter of the stopping ball is larger than the outlet aperture of the conversion body and an inner diameter of the liquid nitrogen in-out pipe. The liquid nitrogen detection device provided by the invention is simple in structure, the liquid nitrogen volatilization rate can be accurately detected, the potential safety hazard is reduced, the economic loss is reduced, and the convenience in operation is improved.

Description

technical field [0001] The invention belongs to the technical field of liquid nitrogen detection, and in particular relates to a liquid nitrogen detection device and an operation method thereof. Background technique [0002] The ultra-low temperature storage and transportation device needs to be equipped with a liquid nitrogen detection device, and the conventional liquid nitrogen detection system is not only large in size but also complex in structure, and cannot accurately detect the volatilization rate of liquid nitrogen, so that the inability to replenish nitrogen in time may easily lead to failure in ultra-low temperature storage. A sample damage accident occurred. [0003] The above common liquid nitrogen detection system is not only complex in structure but also difficult to detect the volatilization rate of liquid nitrogen and inconvenient to operate. [0004] Therefore, there is an urgent need for a liquid nitrogen detection device in the prior art to solve the pro...

AI Technical Summary

Problems solved by technology

[0002] The ultra-low temperature storage and transportation device needs to be equipped with a liquid nitrogen detection device, and the conventional liquid nitrogen detection system is not only large in size but also complex in structure, and cannot accurately detect the volatilization rate of liquid nitrogen, so that the inability to replenish nitrogen in time may easily lead to failure in ultra-low temperature storage. Sample damage accident

[0003] The above ordinary liquid nitrogen detection system is not only complex in structure, but also difficult to detect the volatilization rate of liquid nitrogen, and the operation is inconvenient.

[0004] Therefore, there is an urgent need for a liquid nitrogen detection device in the prior art to solve the problem of complex structure, and at the same time solve the problem of accurately detecting the volatilization rate of liquid nitrogen, reduce potential safety hazards, reduce economic losses, and improve work efficiency

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