CN217784201U

CN217784201U - Spring composite sealing washer

Info

Publication number: CN217784201U
Application number: CN202221458129.3U
Authority: CN
Inventors: 祝海峰; 祝亚利; 祝振宁; 祝立夫
Original assignee: Xianyang Dragon Sealing Compound Materials Co ltd
Current assignee: Xianyang Dragon Sealing Compound Materials Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-11-11
Anticipated expiration: 2032-06-13

Abstract

The spring composite sealing washer comprises an annular elastic inner framework, wherein an annular metal cushion layer wraps the outside of the annular elastic inner framework, and a sealing washer body layer wraps the outside of the annular metal cushion layer; the annular elastic inner framework comprises a plurality of springs uniformly distributed on the inner circumference of the annular metal cushion layer, the axis of each spring is parallel to the axis of the sealing gasket, the upper ends and the lower ends of the springs are respectively attached to the upper surface and the lower surface of the inner surface of the annular metal cushion layer, and the two connected spring sides are connected through a limiting connecting piece. The utility model discloses have fine resilience, sealing performance is good, is difficult for the conquassation, and required pretightning force is less, long service life, and is corrosion-resistant, high temperature resistant, low temperature resistant can be good.

Description

Spring composite sealing washer

Technical Field

The utility model belongs to the technical field of sealed the pad, concretely relates to compound seal ring of spring.

Background

Gasket seals are the dominant form of static seals that are removable in industrial settings. Gasket seals typically employ bolted flange connections, where a sealing gasket is a critical element affecting the performance of the bolted flange seal connection. With the rapid development of modern science and technology, industrial equipment tends to have high parameters and large-scale, new processes are continuously emerging, particularly the rise of petrochemical industry, atomic energy industry and large-scale power stations, process equipment develops towards high temperature, high pressure, high vacuum, deep cooling and large-scale, and the requirement on gasket sealing is more and more strict. Some conventional sealing materials and structures have been unable to meet the increasingly stringent tightness requirements for systems and equipment. The sealing gaskets commonly used at present comprise a metal wound gasket, a metal coated gasket, a metal punched toothed plate flexible graphite composite gasket and a flexible graphite metal corrugated tooth composite gasket, and the sealing gaskets can only be generally used under the general working condition, but when the working condition is harsh, such as under the working conditions of simultaneously bearing impact, alternating load and thermal cycle at high temperature and high pressure, the commonly used sealing elements often cause sealing connection failure due to material degradation and structure relaxation, thereby bringing huge economic loss and even causing equipment and personal accidents. There is therefore a need for improvements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a spring composite seal ring, the utility model discloses have fine resilience, sealing performance is good, is difficult for the conquassation, and required pretightning force is less, long service life, and is corrosion-resistant, high temperature resistant, low temperature resistant can be good.

The utility model adopts the technical proposal that: a spring composite sealing washer comprises an annular elastic inner framework, wherein an annular metal cushion layer wraps the outside of the annular elastic inner framework, and a sealing washer body layer wraps the outside of the annular metal cushion layer; annular elasticity inner frame includes a plurality of springs at the inside circumference equipartition of annular metal bed course, every the spring axis is parallel with sealed axis of filling up, the upper end and the lower extreme of spring laminate respectively annular metal bed course internal surface the higher authority and below, link to each other two connect through spacing connecting piece between the spring side.

In a further limitation of the above technical solution, the spring is a cylindrical coil spring.

In the technical scheme, the limiting connecting piece is made of round steel wires with the diameter of 1 mm-3 mm, and two ends of the limiting connecting piece are connected with two adjacent springs through spot welding.

In the technical scheme, the limiting connecting piece is made of a steel sheet with the thickness of 1-2mm, and two ends of the limiting connecting piece are connected with two adjacent springs through spot welding.

In order to further limit the technical scheme, the annular metal cushion layer is made of a stainless steel sheet with the thickness of 0.3-0.6 mm.

In order to further limit the technical scheme, the inner side and the outer side of the annular metal cushion layer are both in arc-shaped transition structures.

In order to further limit the technical scheme, the sealing gasket body layer is made of rubber materials.

The utility model has the advantages compared with the prior art:

1. the spring composite sealing washer is composed of the annular elastic inner framework, the annular metal cushion layer and the sealing washer body layer, wherein the annular elastic inner framework is uniformly distributed on the circumference of the inner spring, and the annular metal cushion layer and the sealing washer body layer are arranged outside the annular elastic inner framework, so that the sealing washer has good resilience, good sealing performance, difficulty in crushing, small required pre-tightening force and long service life;

2. the sealing gasket is not sensitive to the defects of the sealing surface of the flange, does not damage the working surface of the flange, has excellent corrosion resistance, high temperature resistance and low temperature resistance, requires smaller pretightening force, and can realize effective sealing of industrial devices which are arranged at high temperature and high pressure and have the functions of vibration, impact and thermal cycle.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 isbase:Sub>A sectional view of the structure of fig. 1 frombase:Sub>A-base:Sub>A.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

Referring to fig. 1-2, embodiments of the present invention are detailed.

A spring composite sealing washer comprises an annular elastic inner framework 3, wherein an annular metal cushion layer 2 is wrapped outside the annular elastic inner framework 3, and a sealing washer body layer 1 is wrapped outside the annular metal cushion layer 2; annular elasticity inner frame 3 includes a plurality of springs 4 at the inside circumference equipartition of annular metal bed course 2, every 4 axes of spring are parallel with the axis of sealed pad, the upper end and the lower extreme of spring 4 laminate respectively annular metal bed course 2 internal surface the higher authority and below, link to each other two connect through spacing connecting piece 5 between the 4 sides of spring for the design of spring. The sealing washer has good rebound resilience and sealing performance, is not easy to crush, requires smaller pretightening force and has long service life.

Preferably, the spring 4 is a cylindrical coil spring.

Preferably, the limiting connecting piece 5 is made of round steel wires with the diameter of 1 mm-3 mm, and two ends of the limiting connecting piece 5 are connected with the two adjacent springs 4 through spot welding.

Or the limiting connecting piece 5 is made of a steel sheet with the thickness of 1-2mm, and two ends of the limiting connecting piece 5 are connected with the two adjacent springs 4 through spot welding.

Preferably, the annular metal cushion layer 2 is made of a stainless steel thin plate with the thickness of 0.3-0.6 mm.

The inner side and the outer side of the annular metal cushion layer 2 are both arc-shaped transition structures 2-1, so that the annular metal cushion layer can be ensured to have certain elastic telescopic performance in the compression deformation of the sealing gasket body and the spring.

The sealing gasket body layer 1 is made of rubber materials.

The sealing gasket is not sensitive to the defects of the sealing surface of the flange, does not damage the working surface of the flange, has excellent corrosion resistance, high temperature resistance and low temperature resistance, requires smaller pretightening force, and can realize effective sealing of industrial devices which are arranged at high temperature and high pressure and have the functions of vibration, impact and thermal cycle.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A spring composite sealing gasket characterized by: the gasket comprises an annular elastic inner framework (3), wherein an annular metal cushion layer (2) wraps the annular elastic inner framework (3), and a gasket body layer (1) wraps the annular metal cushion layer (2); the annular elastic inner framework (3) comprises a plurality of springs (4) which are uniformly distributed on the inner circumference of the annular metal cushion layer (2), the axis of each spring (4) is parallel to the axis of the sealing gasket, the upper end and the lower end of each spring (4) are respectively attached to the upper surface and the lower surface of the inner surface of the annular metal cushion layer (2), and the side surfaces of the two connected springs (4) are connected through a limiting connecting piece (5); the sealing gasket body layer (1) is made of rubber materials.

2. A spring composite sealing gasket according to claim 1, wherein: the spring (4) is a cylindrical spiral spring.

3. A spring composite sealing gasket according to claim 1, wherein: the limiting connecting piece (5) is made of round steel wires with the diameter of 1 mm-3 mm, and two ends of the limiting connecting piece (5) are connected with the two adjacent springs (4) through spot welding.

4. A spring composite sealing gasket according to claim 1, wherein: the limiting connecting piece (5) is made of a steel sheet with the thickness of 1-2mm, and two ends of the limiting connecting piece (5) are connected with the two adjacent springs (4) through spot welding.

5. A spring composite sealing gasket according to claim 1, wherein: the annular metal cushion layer (2) is made of a stainless steel sheet with the thickness of 0.3-0.6 mm.

6. A spring composite sealing gasket according to claim 5, wherein: the inner side and the outer side of the annular metal cushion layer (2) are both arc transition structures (2-1).