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Composite seal-based spiral sheet sealing assembly

A sealing component and composite sealing technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of difficult assembly, high process requirements, and inconvenient disassembly and assembly, and achieve simple and reliable structure, strong safety, and easy maintenance. Effect

Pending Publication Date: 2021-07-02
卢星霖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] For example, the structure is more complex than the packing seal, the process requirements are high, the processing accuracy is high, the installation accuracy is high, and certain installation technology is required, etc., especially the dry gas seal has higher installation requirements, which is easy to cause installation damage, high price, and poor substitution. , damage must be replaced
[0015] The structure is complex and inconvenient to disassemble. Compared with other seals, the number of parts of the mechanical end face seal is large, requiring precision and complex structure, especially in assembly.

Method used

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  • Composite seal-based spiral sheet sealing assembly
  • Composite seal-based spiral sheet sealing assembly
  • Composite seal-based spiral sheet sealing assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] See attached figure 1 , a group of helical sheet sealing components wrapping the sealed part 2, from left to right are the toggle ring 102, the spiral sealing sheet A103 and the fixed ring 104, the toggling ring 102 and the fixed ring 104 wrap the two ends of the spiral sealing sheet A103 and connect them The flexible film 400 wraps the spiral sealing sheet A103, the axial spiral end surface of the spiral sealing sheet A103 has a sealing coating 401, and the outer ring surface of the sealed part 2 has a wear-resistant coating 202.

Embodiment 2

[0073] See attached figure 2 , there is a group of helical sheet sealing components in the sealing cabin 1 to wrap the tubular sealed part 2, the helical sheet sealing components are the fixed ring 104, the screw sealing sheet C103″ and the toggle ring 102 from left to right, the fixed ring 104 and the toggle ring 102 wraps the two ends of the spiral sealing sheet C103" and connects them; the outer ring surface of the toggle ring 102 is adjustable and tight fit with the inner annular surface of the airtight cabin 1, and the axial outer end surface of the toggle ring 102 has an adjustable radial rotation angle Process hole 105 .

Embodiment 3

[0075] See attached image 3 , used for low-speed rotation seals such as valve stem seals, a set of spiral leaf seal components wraps the rotating shaft 2' or the spiral motion shaft, and from left to right are the leather cup 200, the fixed ring 104, the spiral seal A103 and the toggle ring 102 , the fixed ring 104 and the toggle ring 102 are integrated with the spiral sealing sheet A103, the spiral sheet sealing assembly wraps a flexible sealing sleeve 4, the outer ring surface of the toggle ring 102 is adjustable and tight fit with the inner ring surface of the sealing cabin 1, The axial outer end surface of the toggle ring 102 has a process hole 105 ; wherein, the inner end surface of the cup 200 is in contact with the corresponding outer end surface of the sealing chamber 1 and the fixed ring 104 .

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Abstract

The invention discloses a composite seal-based spiral sheet sealing assembly and belongs to pioneering inventions in the field of sealing. At least one spiral sheet sealing assembly is arranged in a sealed cabin to wrap a sealed part, each spiral sheet sealing assembly is sequentially provided with a shifting ring, a spiral sealing sheet and a fixing ring installed in the sealed cabin in the axial direction, and each spiral sealing sheet is axially and tightly attached and is radially and tightly attached to the sealing ring surface of the sealed part to form a sealing pair at the same time; or a spiral sheet sealing assembly and a corrugated pipe clutch are arranged in the sealed cabin to wrap a rotating shaft, a fixed end plate is arranged at one end of a corrugated pipe of the corrugated pipe clutch, a movable end plate is arranged at the other end of the corrugated pipe, the fixed end plate is tightly connected with the inner cavity of the sealed cabin, the movable end plate can axially move in the inner cavity of the sealed cabin, and when the relative pressure difference between two end surfaces of the movable end plate is greater than zero, the sealing end surface of the movable end plate and the sealing end surface of the corresponding sealing ring seat form a sealing pair. The assembly is simple and reliable in structure, wide in application, high in cost performance, zero in leakage, long in service life and convenient to maintain.

Description

technical field [0001] Pioneering inventions in the field of sealing based on spiral blade seal components and composite seals, involving reciprocating seals, rotary seals, spiral seals and static seals; reciprocating seals involve gas compressors, hydraulic systems, pipeline conveying systems, core pipe valves Directional movement, pneumatic transmission, and flexible reciprocating transmission belts for hoisting or rotary gate valves; rotary seals involve one-way rotation or two-way rotation such as pumps, compressors, reactors and other rotary fluid machinery, and are also used for valve stems, spray Seals for showers, gearboxes and stern shafts of ships; static seals involve the fixed connection seals of pipelines. [0002] The present invention is based on the spiral blade seal assembly and the compound seal, which can realize the compensation after wear. [0003] The spiral blade sealing component and composite seal of the present invention have the characteristics of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3248F16J15/3284F16J15/34
CPCF16J15/3464F16J15/3284F16J15/3248
Inventor 卢星霖
Owner 卢星霖
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