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A combined hatch seal

A sealing and combined technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of small permanent deformation and small compression, and achieve the effect of small compression permanent deformation, high elasticity and large compression

Active Publication Date: 2018-01-23
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a combined hatch seal structure with wide temperature range, high elasticity, small permanent deformation, large compression amount and long service life for large-sized hatches, doors and covers with poor flatness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A combined hatch seal, the cross-sectional structure is as attached Figure 4 As shown, the material of the elastic sealing strip is EPDM foam rubber, the hollow cavity is hexagonal, the height of the inner cavity is 27.5mm, the wall thickness of the top of the cavity is 2mm, and the bottom of the inner cavity is a groove of R2.5; The compression spring is a stainless steel conical spring, the diameter of the small end is 5mm, the diameter of the large end is 10mm, the height is 25mm, and the diameter of the spring wire is 0.4mm; the plastic wire is a plastic polyurethane round rod with a diameter of 5mm. The arrangement density of the springs is 67 per meter, evenly distributed, arranged in parallel and fixed in the same plane on one side of the polyurethane round rod, the spring layout structure is as attached Figure 5 shown.

[0030] For the combined hatch seal, the compression direction of the spring is the pressure bearing direction, the maximum compression amoun...

Embodiment 2

[0032] A combined hatch seal, the cross-sectional structure is as attached Figure 6 As shown, the material of the elastic sealing strip is silicone rubber, the upper part of the sealing strip is a round tube with a diameter of 21 mm, and the lower part is a rubber body with a barbed structure. The height of the rubber body is 10 mm, the width is 4 mm, and the wall thickness of the hollow cavity is 1 mm. There are three chambers, the division direction is parallel to the rubber body with barbed structure at the bottom; the compression spring is a flat bending structure made of stainless steel, the spring height is 7.43mm, and the spring wire diameter is 0.3mm; the plastic wire is 3.8mm in diameter Silicone round stick.

[0033] The arrangement density of springs is 200 per meter per row, which are divided into two rows and arranged evenly and fixed in the same plane on both sides of the plastic wire. The arrangement is as attached Figure 7 As shown, it is installed in the mi...

Embodiment 3

[0036] A combined hatch seal, the cross-sectional structure is as attached figure 2 As shown, the material of the elastic sealing strip is EPDM rubber, the hollow cavity is circular, and there is a rectangular rubber body with a thickness of 3mm and a width of 28mm at the bottom for installation and fixing. The cavity diameter is 25mm, and the wall thickness at the top of the cavity is 1.5mm; the combination form is four rows of springs inserted on the plastic wire; the compression spring is a flat bending structure made of stainless steel, the spring height is 9.7mm, and the spring wire diameter is 0.4mm ; The plastic wire is a polyurethane round rod with a diameter of 5mm. The arrangement density of the springs is 50 per meter, and they are divided into four rows and arranged evenly on the plastic wire, and the radial angle between two adjacent rows is 90°. The compression direction of the spring is perpendicular to the extension direction of the wire rod.

[0037] The co...

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Abstract

The invention belongs to the technical field of sealing. Long-term sealing stress and large compression amount are provided by utilizing the high elasticity of compression springs in a hollow elastic sealing strip, so as to improve the sealing reliability. The invention relates to a combined hatch sealing element which is a linear sealing product and composed of the tubular elastic sealing strip (1), the compression springs (2) and plastic wire rods (3), wherein the compression springs (2) and the plastic wire rods (3) are integrally combined and placed in a cavity of the tubular elastic sealing strip (1); the compression direction of the springs is parallel to the main pressure-bearing direction of the sealing element and perpendicular to the extension direction of the plastic wire rods. The combined hatch sealing element disclosed by the invention has the advantages of being large in compression amount, high in elasticity, good in sealing stress retainability, little in compression permanent set, wide in adaptive temperature range, long in sealing life, high in sealing reliability and the like, and is suitable for the sealing of large-size cabins, doors and covers and particularly suitable for reliable sealing under large deformation amount.

Description

technical field [0001] The invention belongs to the technical field of sealing and relates to static sealing technology, in particular to large-size linear sealing technology. Background technique [0002] The cabins, doors, and covers of vehicles, ships, machinery, construction and other equipment are difficult to waterproof due to their large size and large deformation during processing and use. At present, elastic sealing strips are mostly used for the sealing of cabins, doors and covers. The types of elastic sealing strips vary with different operating conditions and installation forms, generally including the following forms: [0003] One is the dense sealing strip. The dense sealing strip has a large sealing force, but poor elasticity and compressibility, and is not suitable for large deformation. The second is the sponge sealing strip. Sponge sealing strips are easy to compress and can adapt to the large deformation of large-sized cabins, doors, and covers. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/06
CPCF16J15/06
Inventor 邹德广杜明欣杜华太崔俞张春梅张志刚宫志欣马伟超张斌庞明磊孙国华陶炜尤丛赋
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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