Multifunctional liquid sampling and storing steel cylinder of novel sealing structure

Abstract

The invention provides a liquid sampling storage cylinder with a new multifunctional sealed structure, which is an all-stainless steel sampling cylinder that can store toxic, harmful and volatile liquids under pressure for a long time. The main body of the cylinder includes an open joint and a ball joint. There are two types of caps, a sealing cap and a sampling cap. The present invention improves the ability of the bottle body to resist deformation by adopting a new type of stainless steel material; by adding a base, the influence of bottle body deformation on use is reduced; by improving the sealing method, the sealing performance of the bottle body is improved; by designing two The joint and two kinds of caps realize the seamless connection of the bottle body with the storage tank or tanker by means of the shut-off valve and the hose, thereby realizing the purpose of airtight sampling.

Description

technical field [0001] The invention relates to the field of testing and storage of toxic and harmful liquids, in particular to a liquid sampling and storage steel cylinder with a multifunctional novel sealed structure. Background technique [0002] At present, narrow-mouthed glass bottles or stainless steel cylinders with plugged caps are used for routine liquid propellant assay sampling and arbitration sample storage, and the following problems exist during use: [0003] (1) The sealing effect is poor. Threaded joints are generally used between the bottle mouth and the bottle cap of the current steel cylinder, and a polytetrafluoroethylene plastic gasket is installed in the bottle cap for sealing. Because the elastic deformation of the polytetrafluoroethylene gasket is small, the sealing and bearing of the bottle body interface The pressure effect is poor, and gas leakage is prone to occur during use; while glass bottles use glass stoppers, which cannot be sealed. [000...

AI Technical Summary

Problems solved by technology

[0003] (1) Poor sealing effect

Threaded joints are generally used between the bottle mouth and the bottle cap of the current steel cylinder, and a polytetrafluoroethylene plastic gasket is installed in the bottle cap for sealing. Because the elastic deformation of the polytetrafluoroethylene gasket is small, the sealing and bearing of the bottle body interface The pressure effect is not good, and gas leakage is prone to occur during use; while glass bottles use glass stoppers, which cannot be sealed

[0004] (2) It cannot be filled with nitrogen to keep the pressure

Existing steel cylinders and glass bottles have only one mouth, so they cannot be filled with nitrogen to maintain pressure after storing liquids, and cannot effectively prevent components in the air from entering the bottle. The quality of the propellant is difficult to guarantee when stored for a long time

[0005] (3) Closed sampling cannot be realized

Toxic and harmful propellants evaporate during open sampling, which will have a certain impact on operators and the environment

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