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Corrosion-resistant and leakage-proof device capable of achieving full-space isobaric stress state through free movement of sealing ring

A technology of stress state and sealing ring, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of PTFE sealing ring losing its sealing effect, low bonding degree, PTFE sealing ring and mechanical Problems such as low degree of interface fit

Active Publication Date: 2021-12-31
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the PTFE sealing ring is squeezed into contact with the mechanical interface, due to the poor elasticity of the PTFE sealing ring, the elastic deformation of the PTFE sealing ring under pressure is very small, and the PTFE sealing ring and the The bonding degree of the mechanical interface is low. One side of the PTFE sealing ring is liquid material, and the other side is air. When the internal stress of the liquid material is low, the PTFE sealing ring can seal; the body detonation warhead The storage temperature is -50℃~80℃. When the temperature is the highest, the measured internal stress of the liquid phase material does not exceed 0.6MPa. When the internal stress of the liquid phase material is high, the pressure on the side of the PTFE sealing ring contacting the liquid phase material is much higher. Under atmospheric pressure, due to the low degree of adhesion between the PTFE sealing ring and the mechanical interface, the liquid phase fuel on the side with higher pressure will overflow to the atmospheric pressure side, causing the PTFE sealing ring to lose its sealing effect

Method used

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  • Corrosion-resistant and leakage-proof device capable of achieving full-space isobaric stress state through free movement of sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 As shown, this embodiment provides a corrosion-resistant and leak-proof device that realizes the state of equal pressure and stress in the entire space through the free movement of the sealing ring. It includes a free movement sealing ring 3, and is characterized in that it also includes a hole sealing element 1, a shaft hole sealing element 2, a pressure difference sealing ring 4, and a coaxial positioning pin 5;

[0037] The shape of hole type sealing element 1 is a first circular plate, the first circular plate is a body of revolution, the center of the first circular plate has a first circular hole, the inner surface of the first circular hole is the first inner cylindrical surface, the first circular The upper end of the plate has a first annular groove, and the upper end of the first circular plate has four first circular blind holes uniformly distributed in the circumferential direction. The first circular blind holes are located outside the first a...

Embodiment 2

[0070] The difference between embodiment 2 and embodiment 1 is:

[0071] In this embodiment, the ratio of the diameter of the third annular body of the free-moving sealing ring 3 before being compressed to the width of the second annular groove of the shaft hole sealing element 2 is 1:5;

[0072] Process 10 pieces of the present invention, fill the interior with high-energy fuel, raise the temperature from -50°C to 80°C, store for 5 days, then lower the temperature from 80°C to -50°C, store for 5 days, and cycle the temperature up and down 15 times. It was found that the high-energy fuel did not leak, and the shaft hole sealing element 2 was opened, and it was found that the oil on one side of the free-moving sealing ring 3 did not flow to the high-energy fuel, and the high-energy fuel on the other side of the free-moving sealing ring 3 did not flow to the water either. Prove that the present invention is effective.

[0073] A kind of anti-corrosion and anti-leakage device of t...

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Abstract

The invention discloses a corrosion-resistant and leakage-proof device capable of achieving a full-space isobaric stress state through free movement of a sealing ring. The upper end of a pressure-difference-resistant sealing ring is subjected to extrusion force of the lower end face of a second outer flange of a shaft hole sealing element; a hole sealing element, the shaft hole sealing element, a free motion sealing ring and the pressure-difference-resistant sealing ring form a fourth closed space, the fourth closed space is filled with oil, the lower end of the free motion sealing ring is filled with high-energy fuel, the upper end of the free motion sealing ring is filled with oil, the inner side of the pressure-difference-resistant sealing ring is filled with oil, and the outer side of the pressure-difference-resistant sealing ring is filled with air; the polytetrafluoroethylene sealing ring is driven by pressure difference to move up and down, the internal stress of oil is adjusted by adjusting the space of the oil, so that the internal stress of high-energy fuel and the internal stress of the oil are equal, a liquid-phase material and the oil do not cross a power source of the polytetrafluoroethylene sealing ring and are both located in the respective space, and the sealing effect is achieved through the polytetrafluoroethylene sealing ring.

Description

technical field [0001] The invention belongs to the technical field of corrosion-resistant and anti-leakage devices, and relates to a corrosion-resistant and anti-leakage device in a state of equal pressure and force, in particular to a corrosion-resistant and anti-leakage device that realizes the state of equal pressure and force in the entire space through the free movement of a sealing ring. Background technique [0002] The interior of the body detonation warhead is filled with high-energy fuel, driven by the explosion and throwing of explosives, the high-energy fuel is thrown into the air, and the high-energy fuel is mixed with the air to form a large-scale active cloud, and then the explosive is detonated twice to form an active cloud. Body detonation, releasing a strong shock wave, is one of the most powerful weapons. [0003] The high-energy fuel filled inside the body detonation warhead contains liquid phase materials. Therefore, each mechanical interface in the bod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10
CPCF16J15/104F16J15/002
Inventor 许志峰袁宝慧计冬奎曹玉武王世英
Owner XIAN MODERN CHEM RES INST