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A sealing device suitable for corrosive liquids

A sealing device and corrosive technology, applied in the field of sealing device for corrosive liquid and sealing device for filling liquid, can solve the problem of difficult to achieve long-term sealing effect, poor elasticity of polytetrafluoroethylene, sticking between polytetrafluoroethylene and metal shell. In order to meet the sealing requirements, realize the sealing effect, and meet the corrosion resistance requirements

Active Publication Date: 2022-02-22
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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  • A sealing device suitable for corrosive liquids

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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 liquids. The axis of the rotating body of the lower part coincides with the axis of the rotating body of the upper part. The lower part is located at the lower end of the upper part. The first circular plane of the lower part is in contact with the upper part through screws, the sealing element is located in the fourth upper annular groove of the lower part, and the second lower annular protrusion of the sealing element is in contact with the fourth annular groove of the lower part; In the present invention, a spring coil is embedded inside the polytetrafluoroethylene, and the compression elasticity of the polytetrafluoroethylene is improved through the spring coil, so that the combination of the polytetrafluoroethylene and the spring coil has two characteristics of good elasticity and corrosion resistance at the same time, so that The warhead casing meets the requirements of corrosion resistance and sealing at the mechanical interface. It ensures the reliable sealing of the corrosive liquid charge warhead during long-term storage.

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 Patents(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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