Composite split type high-pressure sealing pair

A high-pressure sealing, split-type technology, applied in the direction of lift valves, engine components, mechanical equipment, etc., can solve the problems of high engine working pressure, shedding, large deformation of non-metallic sealing rings, etc., to ensure effective sealing, reasonable structure, and improved The effect of service life

Inactive Publication Date: 2012-06-27
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the liquid oxygen kerosene engine, the working pressure of the engine is high and the sealing requirements are strict, which puts forward higher requirements

Method used

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  • Composite split type high-pressure sealing pair
  • Composite split type high-pressure sealing pair
  • Composite split type high-pressure sealing pair

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Effect test

Embodiment Construction

[0016] see figure 1 As shown, the structure diagram of the composite split high-pressure sealing pair of the present invention is also a preferred embodiment of the present invention. It is mainly composed of a valve seat 6, a valve core substrate 1, a valve core non-metallic sealing ring 2, a metal fixing ring 3, and the like.

[0017] The composite split high-pressure sealing pair provided by the present invention includes a valve seat 6 and a valve core assembly. The valve core assembly includes a valve core base 1, a non-metallic sealing ring 2 and a metal fixing ring 3; Groove 8, non-metallic sealing ring 2 and metal fixed ring 3 are arranged in annular sealing groove 8; metal fixed ring 3 is arranged on the inner side of non-metallic sealing ring 2; Angle 9; the position corresponding to the outer surface of the metal fixing ring 3 and the chamfer 9 is provided with an annular boss 10; the outer diameter of the annular boss 10 is slightly larger than the inner diameter ...

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PUM

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Abstract

The invention relates to a composite split type high-pressure sealing pair, which comprises a valve seat, a valve spool base, a non-metal sealing ring and a metal fixing ring. An annular sealing groove is arranged on the valve spool base, and the non-metal sealing ring and the metal fixing ring are arranged in the annular sealing groove; a chamfer is arranged at one end, which is close to the valve seat, of the inner side surface of the metal fixing ring; an annular boss is disposed on the outer side surface of the metal fixing ring and corresponds to the chamfer; the outer diameter of the annular boss is slightly larger than the inner diameter of the non-metal sealing ring; the depth of the annular boss is smaller than that of the non-metal sealing ring; the inner wall of the annular sealing groove presses the chamfer of the metal fixing ring in an edge rolling manner; and an outwards protruded annular triangular step is arranged on the valve seat and is opposite to the non-metal sealing ring, and an inwards concave annular holding groove is arranged on the outer side of the triangular step. The composite split type high-pressure sealing pair can meet requirements of sealing of high-pressure media, and is reasonable in structure and reliable in performance.

Description

technical field [0001] The invention belongs to the field of valve body sealing, and relates to a high-pressure sealing pair, in particular to a composite split type high-pressure sealing pair. Background technique [0002] In the liquid oxygen kerosene engine, the engine working pressure is high and the sealing requirements are strict, which puts forward higher requirements for the internal sealing pair of the valve. Using the traditional metal-non-metal sealing type, the non-metal sealing ring is prone to large deformation and falling off. Since the high-pressure system has greatly improved the performance of the engine, the application range of high-pressure valves has also become more useful. With the development of the technical level of aerospace models, the pressure of the medium used in aerospace models is getting higher and higher, and the sealing performance is also increasing. put forward higher requirements. Higher reliability, tightness, and strong pressure bea...

Claims

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Application Information

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IPC IPC(8): F16K1/34F16K1/46
Inventor 刘站国谢宁程亚威张赤民王亚训陈维宇雷恒贾景卫
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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