Sealing device suitable for corrosive liquid

A sealing device and corrosive technology, which is applied in the field of sealing devices for filling liquids and sealing devices for corrosive liquids. Long-term sealing effect and other issues

Active Publication Date: 2020-02-04
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the elasticity of PTFE is poor, and the elastic modulus of PTFE is 60MPa, which is 8 times that of rubber.
Under the same pressure, the amount of deformation that can occur in PTFE is only 1 / 8 of that of rubber. When PTFE is squeezed into contact with the metal shell, the tightness between the PTFE and the metal shell is greatly improved. reduced, making it difficult to achieve a reliable long-term sealing effect

Method used

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  • Sealing device suitable for corrosive liquid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 As shown, this embodiment provides a sealing device suitable for corrosive liquids, including an upper part 1, which is characterized in that it also includes a sealing element 2, an annular spring 3, and a lower part 4;

[0048] The upper part 1 is the first circular plate, the first circular plate of the upper part 1 is a body of revolution, the lower surface of the first circular plate of the upper part 1 is the first circular plane, and the first circular plane of the upper part 1 has a circle of the first circular plane. An annular groove, the shaft section of the first annular groove of the upper part 1 is an inverted V shape, and the rotation axis of the first annular groove of the upper part 1 coincides with the axis of the rotary body of the upper part 1;

[0049] The upper part 1 is the upper part of the mechanical connection interface in the liquid-phase charge shell, and the liquid-phase charge is located at the lower end of the upper part 1...

Embodiment 2

[0092] Such as figure 1 As shown, this embodiment provides a sealing device suitable for corrosive liquids, including an upper part 1, which is characterized in that it also includes a sealing element 2, an annular spring 3, and a lower part 4;

[0093] The upper part 1 is the first circular plate, the first circular plate of the upper part 1 is a body of revolution, the lower surface of the first circular plate of the upper part 1 is the first circular plane, and the first circular plane of the upper part 1 has a circle of the first circular plane. An annular groove, the shaft section of the first annular groove of the upper part 1 is an inverted V shape, and the rotation axis of the first annular groove of the upper part 1 coincides with the axis of the rotary body of the upper part 1;

[0094] The upper part 1 is the upper part of the mechanical connection interface in the liquid-phase charge shell, and the liquid-phase charge is located at the lower end of the upper part 1...

Embodiment 3

[0137] Such as figure 1 As shown, this embodiment provides a sealing device suitable for corrosive liquids, including an upper part 1, which is characterized in that it also includes a sealing element 2, an annular spring 3, and a lower part 4;

[0138] The upper part 1 is the first circular plate, the first circular plate of the upper part 1 is a body of revolution, the lower surface of the first circular plate of the upper part 1 is the first circular plane, and the first circular plane of the upper part 1 has a circle of the first circular plane. An annular groove, the shaft section of the first annular groove of the upper part 1 is an inverted V shape, and the rotation axis of the first annular groove of the upper part 1 coincides with the axis of the rotary body of the upper part 1;

[0139] The upper part 1 is the upper part of the mechanical connection interface in the liquid-phase charge shell, and the liquid-phase charge is located at the lower end of the upper part 1...

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Abstract

The invention discloses a sealing device suitable for corrosive liquid. The axis of a revolving body of a lower-end part coincides with the axis of a revolving body of an upper-end part; the lower-endpart is positioned at the lower end of the upper-end part; a fourth upper-end concentric annular surface of the lower-end part makes contact with a first circular plane of the upper-end part; the lower-end part is connected with the upper-end part through screws; sealing original parts are positioned in fourth upper-end annular grooves of the lower-end part; and second lower end annular protrusions of the sealing original parts make contact with the fourth annular grooves of the lower end part. According to the sealing device suitable for the corrosive liquid, spring rings are embedded in polytetrafluoroethylene, the compression elasticity of the polytetrafluoroethylene is improved through the spring rings, so that the combination of the polytetrafluoroethylene and the spring rings has two characteristics of good elasticity and corrosion resistance at the same time, so that the corrosion resistance requirement and the sealing requirement of a warhead shell are met at a mechanical interface, and the reliable sealing performance of a corrosive liquid charge warhead in the long-term storage process is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of shells for filling liquids, and relates to a sealing device for filling liquids, in particular to a sealing device suitable for corrosive liquids. Background technique [0002] The interior of the corrosive liquid-charged warhead is filled with high-energy fuel, and the high-energy fuel filled inside the corrosive liquid-charged warhead contains liquid phase materials. Therefore, all parts of the corrosive liquid-charged warhead in contact with the high-energy fuel must have a seal Mechanical interfaces such as the shell, front and rear end covers, charge ports, cable conduits and spraying tubes of the corrosive liquid charge warhead must meet the sealing requirements. [0003] Chang Xinlong et al reported in the document "Research on Environmental Failure of Missile Rubber Seals" (Equipment Environmental Engineering, August 2011, Vol. 8, No. 4, p. 59): the warhead seal is mainly made of rubber. The elas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10F42B12/36
CPCF16J15/102F16J15/104F42B12/36
Inventor 许志峰曹玉武蒋忠亮宋玉江李广嘉
Owner XIAN MODERN CHEM RES INST
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