Combined honeycomb seal made of polyether-ether-ketone resin materials and method for manufacturing combined honeycomb seal

A technology of polyetheretherketone resin and honeycomb sealing, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc. It can solve the problems of friction coefficient grinding shaft, small design gap, metal honeycomb seal corrosion, etc., and achieve stable product quality, Improve processing efficiency and save material cost

Active Publication Date: 2014-02-05
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the design gap is small and the friction coefficient is high, it is easy to grind the shaft. Therefore, the gap between the honeycomb seal made of metal and the shaft must be at least 200 μm, which cannot meet the use requirements in some occasions where the leakage of the medium is strict.
[0006] 3. Metal honeycomb seals are easily corroded by corrosive media, resulting in a reduction in sealing effect and life
The technical process is relatively complicated, the material utilization rate is low, the cost is high, and the production efficiency is low.

Method used

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  • Combined honeycomb seal made of polyether-ether-ketone resin materials and method for manufacturing combined honeycomb seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the combined honeycomb seal 1 prepared in Example 1 is obtained by assembling a polyether ether ketone resin non-metallic honeycomb sealing tape 2 and a metal base 3, and its size is 200 mm in outer diameter, 100 mm in inner diameter, and 30 mm in height.

[0024] The honeycomb sealing tape 2 is made of polyether ether ketone resin non-metallic materials by injection molding, and the specific preparation process is:

[0025] a. According to the size and technical requirements of the sealing body, the size of the honeycomb sealing tape 2 is designed to be 104mm in outer diameter, 100mm in inner diameter, and 30mm in height. In addition, the honeycomb sealing hole on the honeycomb sealing tape 2 is a regular hexagonal through hole with a regular shape, with a side distance of 4mm, a wall thickness of 1mm, and a depth of 2mm.

[0026] b. Design the corresponding injection mold according to the size of the honeycomb sealing tape 2;

[0027] c. Dry the pe...

Embodiment 2

[0032] Such as figure 1 As shown, the combined honeycomb seal 1 prepared in Example 2 is obtained by assembling a polyether ether ketone resin non-metallic honeycomb sealing tape 2 and a metal base 3, and has an outer diameter of 400 mm, an inner diameter of 200 mm, and a height of 170 mm.

[0033] The honeycomb sealing tape 2 is made of polyether ether ketone resin non-metallic materials by injection molding, and the specific preparation process is:

[0034] a. According to the size and technical requirements of the sealing body, the size of the honeycomb sealing tape 2 is designed to be 212mm in outer diameter, 200mm in inner diameter and 170mm in height. In addition, the honeycomb sealing hole on the honeycomb sealing tape 2 is a regular hexagonal blind hole with a regular shape, with a side distance of 10mm, a wall thickness of 2mm, and a depth of 5mm.

[0035] b. Design the corresponding injection mold according to the size of the honeycomb sealing tape 2;

[0036] c. Dry the pe...

Embodiment 3

[0041] The difference from Embodiment 1 lies in that the honeycomb sealing holes on the honeycomb sealing tape 2 are regular hexagonal through holes, with regular shape, 6mm edge distance, 0.5mm wall thickness and 1.6mm depth. The mold heating temperature was set to 160°C.

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Abstract

The invention provides a combined honeycomb seal with a metal base and a nonmetal honeycomb seal strip made of polyether-ether-ketone resin. The combined honeycomb seal aims to overcome shortcomings in the prior art. The combined honeycomb seal is characterized in that the honeycomb seal strip and the metal base are assembled in an inlaid manner by a mechanical method to form the combined honeycomb seal, the honeycomb seal strip is made of polyether-ether-ketone resin nonmetal materials by an injection molding method, honeycomb seal holes in the honeycomb seal strip are regularly hexagonal through holes or blind holes and are neat in shape, the opposite side distance of each honeycomb seal hole ranges from 4mm to 10mm, the wall thickness of each honeycomb seal hole ranges from 0.5mm to 3mm, and the depth of each honeycomb seal hole ranges from 1.6mm to 8mm. Compared with a metal honeycomb seal, the combined honeycomb seal has the advantages that seal gaps of the honeycomb seal can be reduced by the technology, the sealing performance and the running stability of the combined honeycomb seal can be improved, noise can be reduced, and the honeycomb seal can be used under severe explosive and corrosive conditions and the like; owing to injection molding and a combined structural design, the production efficiency can be improved, energy can be saved, and the cost can be lowered.

Description

Technical field [0001] The invention relates to a honeycomb seal, in particular to a combined honeycomb seal obtained by mechanically connecting a polyether ether ketone (PEEK) resin type non-metallic honeycomb sealing tape and a metal substrate. Background technique [0002] Honeycomb sealing technology is a mature technology that has been widely used in space shuttles, high-power rockets, military and civil aircraft, engines of various ships, and steam turbines, gas turbines, and compressors in the electric power and petrochemical industries. The life span is ordinary comb teeth. The seal is more than twice that, and it has multiple advantages such as reducing leakage, improving rotor stability, and improving efficiency. Honeycomb seal is one of the most advanced sealing methods in the world today. When reducing the radial gap value, the economic efficiency of the machine can be significantly improved by optimizing the relationship between the geometric parameters of the sealed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/00B29C45/00
Inventor 隋国鑫孙兆松林国明马娜
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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