Manufacturing method of high-temperature-resistant, high-pressure-resistant and self-adaptive nonmetal composite sealing ring

A composite sealing and manufacturing method technology, applied in the field of sealing rings, can solve the problems of premature failure of the sealing ring, long processing time, and low service life of the sealing ring, and achieves small initial loading force, reduced installation difficulty, and convenient installation. Effect

Pending Publication Date: 2022-07-29
合肥一密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent No. CN202011210117.4 supercharger composite seal ring, which solves the problem that the wear of the seal ring easily leads to premature failure of the ring under the condition of the optimal small side clearance on the ring side; patent No. CN201911181485. Reliable composite sealing ring processing technology solves the problems of long processing time and low efficiency of ordinary sealing ring processing technology and the processed sealing ring has not been strengthened so that the service life of the sealing ring is low; but the sealing rings of the above two patents Neither can work for more than 300 hours at 400°C and 200MPa, cannot replace metal sealing rings, and cannot greatly reduce the difficulty of sealing system installation

Method used

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  • Manufacturing method of high-temperature-resistant, high-pressure-resistant and self-adaptive nonmetal composite sealing ring
  • Manufacturing method of high-temperature-resistant, high-pressure-resistant and self-adaptive nonmetal composite sealing ring
  • Manufacturing method of high-temperature-resistant, high-pressure-resistant and self-adaptive nonmetal composite sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0044] The high temperature, high pressure and self-adaptive non-metallic composite sealing ring made in this case contains a single layer of a single resin outer layer and a single rubber inner layer, which is suitable for high temperature (400℃) and high pressure (200MPa) working conditions in general. The specific production steps are as follows:

[0045] S101: Put a 0.2mm-thick polybenzimidazole resin sheet into an oven, heat it to 200°C, and introduce nitrogen gas to purge the surface of the resin sheet to remove foreign matter or oxides on the surface, and then set the temperature of the inner cavity of the oven to Raise it to the specified temperature (380°C), keep it warm for 15 minutes, then use a special fixture to take out the sheet, put it into water (the water temperature is controlled between 10 and 35°C), and let it stand for 5 minutes, then take it out and put it in a designated container for use. .

[0046] S201: Take the above softened resin sheet, put it in...

Embodiment example 2

[0053] The high temperature, high pressure and self-adaptive non-metallic composite sealing ring made in this case contains a single layer of a single resin outer layer and two rubber composite inner layers, suitable for high temperature (400 ° C), high pressure ( 200MPa) working condition. The specific production steps are as follows:

[0054] S102: Put the 0.2mm-thick polyimide resin sheet into an oven, heat it to 200°C, pass nitrogen gas, and purge the surface of the resin sheet to remove foreign matter or oxides on the surface, and then set the temperature of the inner cavity of the oven to Raise it to the specified temperature (330°C), keep it warm for 15min, then use a special fixture to take out the sheet, put it in water (the water temperature is controlled between 10 and 35°C), let it stand for 5 minutes, take it out and put it in the designated container for later use .

[0055] S202: Take the above softened resin sheet, put it into a setting mold with a circular c...

Embodiment example 3

[0062] The high temperature, high pressure and self-adaptive non-metallic composite sealing ring produced in this case contains two outer layers of two resins and a single inner layer of rubber, which is suitable for high temperature (400℃) and high pressure (200MPa) with high temperature change frequency. ) working condition. The specific production steps are as follows:

[0063] S103: Put 0.15mm-thick polyimide resin and polybenzimidazole resin sheets into an oven respectively, heat to 200°C, pass nitrogen gas, and purge the surface of the resin sheet to remove foreign matter or oxides on the surface , and then raise the temperature of the inner cavity of the oven to the specified temperature (the temperature of the processed polybenzimidazole resin sheet is set to 380°C, and the temperature of the processed polyimide resin sheet is set to 330°C), keep it for 20 minutes, and then use a special The jig takes out the sheet, puts it into water (the water temperature is control...

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Abstract

The invention discloses a manufacturing method of a high-temperature-resistant, high-pressure-resistant and self-adaptive nonmetal composite sealing ring, and belongs to the technical field of sealing rings, and the composite sealing ring manufactured by the method is composed of two parts: a high-temperature-resistant resin outer layer and a high-elasticity rubber inner layer. The nonmetal composite sealing ring manufactured by the invention has excellent high temperature resistance, high pressure resistance and self-adaptability, and the multiple sleeved resin layers are combined with various rubbers, so that the sealing ring has excellent explosion-proof performance, can work for more than 300 hours under the working conditions of 400 DEG C and 200 MPa, can replace a metal sealing ring, greatly reduces the installation difficulty of a sealing assembly, and is suitable for large-scale popularization and application. The problem that no high-temperature-resistant, high-pressure-resistant and self-adaptive nonmetal sealing ring exists under the high-temperature and high-pressure working conditions is solved, and the sealing ring has wide application prospects in high-temperature and high-pressure equipment in the industries of military industry, petrochemical industry, new energy and the like.

Description

technical field [0001] The invention relates to the technical field of sealing rings, and more particularly, to a manufacturing method of a non-metallic composite sealing ring with high temperature resistance, high pressure resistance and self-adaptation. Background technique [0002] The sealing ring can be made of metal materials such as carbon steel, copper, alloy steel, etc., or non-metallic materials such as rubber, plastic, inorganic fiber, etc., and is generally placed in the ring groove of the sleeve or plunger. The other mechanisms are connected together and can do rotary motion or reciprocating motion, and can also be static and wrong. The sealing ring relies on its initial interference in the radial or axial direction to achieve the original state of sealing. When the working medium enters the system, it is further deformed under the pressure of the medium to achieve continuous sealing. [0003] At present, in some special equipment fields, in order to realize th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/328F16J15/3284F16J15/10B29D23/24
CPCF16J15/328F16J15/3284F16J15/108F16J15/102F16J15/104B29D23/24
Inventor 杨家义
Owner 合肥一密科技有限公司
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