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A device for collecting gas inside a screw-type sealed container

A technology for sealing containers and internal gas, applied in the field of testing, can solve problems such as gas collection

Inactive Publication Date: 2017-04-12
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that there is no related technology to collect the gas inside the metal container sealed with screw plug, the present invention provides a device for gas collection inside the screw plug type sealed container

Method used

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  • A device for collecting gas inside a screw-type sealed container
  • A device for collecting gas inside a screw-type sealed container

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Experimental program
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Effect test

Embodiment Construction

[0009] Such as figure 1 Shown is a schematic diagram of the assembly of the gas collection device of the present invention when in use. The lower end portion 10 of the sleeve 1 is connected to the threaded rod 18 of the container 16 via a rubber tube 19 . Then open the first gas path valve 12 and the second gas path valve 14, open the small vacuum pump 15, and when the value of the pressure gauge 5 is close to 0, continue vacuuming for 10min, then close the second gas path valve 14 and the small vacuum pump 15, Wait for 10 minutes to observe the value change of pressure gauge 5. When the value of the pressure gauge 5 remains unchanged, close the first gas path valve 12 . Turn the handle 3 to move the inner screw 2 downward until the flat mouth of the lower end part 11 of the inner screw enters the groove on the upper surface of the screw plug 17, and then reversely turn the handle 3 until the screw plug 17 withdraws from the screw hole rod 18. Then continue to reversely tur...

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Abstract

The invention discloses a gas collecting device which solves the problem of sampling of gas inside a container sealed by adopting a plug manner in the engineering. The gas collecting device comprises a sleeve (1), an inner lead screw (2), a handle (3), a cylindrical sealing ring (4), a pressure meter (5), a sampling bag (6), a gas path hole (7) and the like, wherein the outer part of the sleeve (1) is connected with a sample container by adopting a rubber pipe in a sealing manner, the inner lead screw (2) is rotated by means of the rotating handle (3), and a plug is unscrewed by using a flat-opening end of the inner lead screw (2); the gas enters the sampling bag (6) through a gas path hole (7) in the wall of the sleeve (1) along an axial direction; the sealing is realized by using the cylindrical sealing ring (4) inside the sleeve (1), an annular sealing ring in a groove of the inner lead screw and a solid sealing grease among threads; the pressure meter (5) is screwed on an external gas path pipe. The gas collecting device is suitable for collecting the gas inside the container sealed by adopting the plug manner.

Description

technical field [0001] The invention relates to the field of testing, in particular to a device for collecting gas inside a screw-type sealed container. Background technique [0002] Due to the decomposition and volatilization of the propellant charge or warhead charge filled in some weapon systems, a certain amount of gas will be generated. Some gases such as isopropyl nitrate will have poor sealing performance due to the aging of the sealing ring inside the weapon system. However, if it spreads into the inner cavity of the launch tube or even the entire weapon system, it will bring safety hazards to the launch, life extension, failure analysis and scrapping of the weapon. Therefore, the qualitative and quantitative detection of such gases in this type of weapon is related to the launch safety and reliability of the weapon and the life extension and maintenance of the weapon system. This type of weapon system is generally filled with nitrogen for storage, the nitrogen pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/24
Inventor 王琼常海张林军王婧娜董小虎夏青武秀全
Owner XIAN MODERN CHEM RES INST
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