CN216519639U

CN216519639U - Ultra-low temperature ends governing valve gap seal gasket

Info

Publication number: CN216519639U
Application number: CN202123175253.7U
Authority: CN
Inventors: 梁伟; 石超
Original assignee: Shenzhen Younaite Energy Engineering Technology Co ltd
Current assignee: Shenzhen Younaite Energy Engineering Technology Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-13
Anticipated expiration: 2031-12-16

Abstract

The utility model provides a sealing gasket for a valve cover of an ultralow-temperature stop regulating valve, which comprises a sealing gasket main body and a spring, wherein the sealing gasket main body consists of a plurality of backing rings, the backing rings are connected through the uniformly distributed springs, the sealing gasket main body is arranged in the valve cover and is sleeved outside a valve rod, each backing ring comprises an outer wear-resistant layer, an outer heat-insulating layer, an outer elastomer layer, an inner metal core reinforcing layer, an inner elastomer layer, an inner heat-insulating layer and an inner wear-resistant layer, the inner metal core reinforcing layer is positioned in the middle of the backing rings, the outer part of the inner metal core reinforcing layer is sequentially coated with the outer elastomer layer, the outer heat-insulating layer and the outer wear-resistant layer from inside to outside, and the inner elastomer layer, the inner heat-insulating layer and the inner wear-resistant layer are sequentially arranged inside the inner metal core reinforcing layer from outside to inside. The valve cover sealing gasket of the ultralow temperature check regulating valve provided by the utility model has the advantages of high structural strength, long service life and good sealing effect, and can effectively ensure the normal operation of the valve.

Description

Ultra-low temperature ends governing valve gap seal gasket

Technical Field

The utility model relates to the technical field of valve sealing, in particular to a valve cover sealing gasket of an ultralow temperature check regulating valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

Need use seal gasket to seal its and valve rod junction in the top valve gap department of butterfly valve, present seal gasket receives the thermal influence of inside liquid easily and leads to its expend with heat and contract with cold comparatively seriously to can lead to its card to die the valve rod or influence the leakproofness, its intensity is not enough simultaneously, produces great deformation easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sealing gasket for a valve cover of an ultra-low temperature check valve, so as to realize the purpose.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides an ultra-low temperature ends governing valve gap seal gasket, includes seal gasket main part and spring, the seal gasket main part comprises a plurality of backing ring, through evenly distributed's spring coupling between the backing ring, the seal gasket main part is installed in the valve gap and cup joints the outside at the valve rod, the backing ring includes outer wear-resisting layer, outer insulating layer, outer elastomer layer, metal inner core enhancement layer, interior elastomer layer, interior insulating layer and interior wear-resisting layer, the metal inner core enhancement layer is located the centre of backing ring, the outside of metal inner core enhancement layer is provided with outer elastomer layer, outer insulating layer and outer wear-resisting layer by the inside cladding in proper order outside to, the inside of metal inner core enhancement layer is equipped with by outer interior elastomer layer, interior insulating layer and the interior wear-resisting layer that sets gradually in to.

Preferably, the outer wear-resistant layer is nano silicon carbide coating sprayed on the outer portion of the outer heat insulation layer.

Preferably, the metal inner core reinforcing layer is a 301 stainless steel ring.

Preferably, the inner elastomer layer is an antiseptic rubber material.

Preferably, the inner thermal insulation layer is an aerogel thermal insulation film.

Preferably, the number of the backing rings is two or more.

The utility model provides a valve cover sealing gasket of an ultralow-temperature check valve. The method has the following beneficial effects:

(1) the outside through the metal inner core enhancement layer is provided with outer elastomer layer by interior cladding in proper order to outer, outer insulating layer and outer wear layer carry out outside buffering, it is thermal-insulated and wear-resisting, outer wear layer protects inside, outer insulating layer avoids the ageing influence sealing performance of outer elastomer layer, the inside of metal inner core enhancement layer is equipped with by the interior elastomer layer that sets gradually in to outside simultaneously, inside buffering is realized to interior insulating layer and interior wear layer, it is thermal-insulated and wear-resisting, thereby guarantee sealing performance's lasting reliable, form multi-stage seal through evenly distributed's spring coupling between a plurality of backing rings, it is sealed effectual, the middle metal inner core enhancement layer of addding increases shock resistance, reduce the deformation probability.

Drawings

FIG. 1 is a schematic structural view of a valve cover sealing gasket of an ultra-low temperature check regulating valve of the present invention;

FIG. 2 is a schematic cross-sectional view of a gasket ring of a valve cover gasket of an ultra-low temperature check valve according to the present invention.

In the figure: 1. a gasket body; 2. a valve cover; 3. a valve stem; 4. a backing ring; 5. a spring; 6. an outer wear layer; 7. an outer insulating layer; 8. an outer elastomeric layer; 9. a metal inner core reinforcement layer; 10. an inner elastomeric layer; 11. an inner insulating layer; 12. an inner wear resistant layer.

Detailed Description

The utility model is further described with reference to the following drawings and detailed description:

in the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the valve cover sealing gasket of the ultra-low temperature check valve comprises a sealing gasket main body 1 and a spring 5, the sealing gasket main body 1 consists of a plurality of backing rings 4, the backing rings 4 are connected through springs 5 which are uniformly distributed, the sealing gasket main body 1 is arranged in the valve cover 2 and is sleeved outside the valve rod 3, the backing ring 4 comprises an outer wear-resistant layer 6, an outer heat-insulating layer 7, an outer elastomer layer 8, a metal inner core reinforcing layer 9, an inner elastomer layer 10, an inner heat-insulating layer 11 and an inner wear-resistant layer 12, the metal inner core reinforcing layer 9 is positioned in the middle of the backing ring 4, an outer elastomer layer 8, an outer heat insulation layer 7 and an outer wear-resistant layer 6 are sequentially coated outside the metal inner core reinforcing layer 9 from inside to outside, an inner elastomer layer 10, an inner heat insulation layer 11 and an inner wear-resistant layer 12 are sequentially arranged inside the metal inner core reinforcing layer 9 from outside to inside.

According to the scheme of the utility model, the outer wear-resistant layer 6 is the nano silicon carbide coating sprayed on the outer part of the outer heat insulation layer 7.

According to the scheme of the utility model, the metal inner core reinforcing layer 9 is a 301 stainless steel ring.

According to the above aspect of the present invention, the inner elastomer layer 10 is made of an anticorrosive rubber material.

According to the scheme of the utility model, the inner heat insulation layer 11 is an aerogel heat insulation film.

According to the above-mentioned aspect of the present invention, the number of the backing rings 4 is two or more.

During the use, outside by interior cladding in proper order through metal inner core enhancement layer 9 is provided with outer elastomer layer 8, outer insulating layer 7 and outer wear-resisting layer 6 carry out outside buffering, it is thermal-insulated and wear-resisting, outer wear-resisting layer 6 is inside to be protected, outer insulating layer 7 avoids outer elastomer layer 8 ageing influence sealing performance, the inside of metal inner core enhancement layer 9 is equipped with by interior elastomer layer 10 that sets gradually in to simultaneously, inside buffering, thermal-insulated and wear-resisting are realized to inner insulating layer 11 and inner wear-resisting layer 12, thereby guarantee lasting reliable of sealing performance, form multistage sealed through the connection of spring 5 through evenly distributed between a plurality of backing rings 4, it is sealed effectual, add metal inner core enhancement layer in the middle of and increase shock resistance, reduce the deformation probability.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The ultra-low temperature stop regulating valve cover sealing gasket is characterized by comprising a sealing gasket main body (1) and springs (5), wherein the sealing gasket main body (1) is composed of a plurality of backing rings (4), the backing rings (4) are connected through the uniformly distributed springs (5), the sealing gasket main body (1) is installed in a valve cover (2) and is sleeved outside a valve rod (3), each backing ring (4) comprises an outer wear-resistant layer (6), an outer heat-insulating layer (7), an outer elastomer layer (8), a metal inner core reinforcing layer (9), an inner elastomer layer (10), an inner heat-insulating layer (11) and an inner wear-resistant layer (12), the metal inner core reinforcing layer (9) is positioned in the middle of the backing rings (4), the outer elastomer layer (8), the outer heat-insulating layer (7) and the outer wear-resistant layer (6) are sequentially coated outside the metal inner core reinforcing layer (9), an inner elastomer layer (10), an inner heat insulation layer (11) and an inner wear-resistant layer (12) which are sequentially arranged from outside to inside are arranged inside the metal inner core reinforcing layer (9).

2. The ultra-low temperature check valve cover gasket seal of claim 1 wherein: the outer wear-resistant layer (6) is a nano silicon carbide coating sprayed outside the outer heat-insulating layer (7).

3. The ultra-low temperature check valve cover gasket seal of claim 1 wherein: the metal inner core reinforcing layer (9) is a 301 stainless steel ring.

4. The ultra-low temperature check valve cover gasket seal of claim 1 wherein: the inner elastomer layer (10) is made of an anti-corrosion rubber material.

5. The ultra-low temperature check valve cover gasket seal of claim 1 wherein: the inner heat insulation layer (11) is an aerogel heat insulation film.

6. The ultra-low temperature check valve cover gasket seal of claim 1 wherein: the number of the backing rings (4) is two or more.