CN217977871U

CN217977871U - Sealing gasket for gas pipe

Info

Publication number: CN217977871U
Application number: CN202222110141.1U
Authority: CN
Inventors: 周兵; 杨海鹰; 郑传超
Original assignee: Chengdu Hongtu Chaoyue Engineering Technology Co ltd
Current assignee: Chengdu Hongtu Chaoyue Engineering Technology Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-12-06
Anticipated expiration: 2032-08-11

Abstract

The utility model relates to the technical field of gaskets, and discloses a sealing gasket for a gas pipe, which comprises a first gasket body and a second gasket body, wherein a movable ring is fixed on the back surface of the first gasket body, a movable groove is arranged on the surface of the second gasket body, which is close to one side of the first gasket body, a plurality of compression springs are arranged inside the movable groove, and one end of each compression spring is fixed with the inner wall of the movable groove; the utility model discloses can reduce the thickness of self at the in-process that receives stress extrusion, prevent that gasket itself from producing deformation because of the extrusion, and hug closely the inner wall of flange when the extrusion that does not receive, sealed effect has been guaranteed, the sealed wearability that fills up is better simultaneously, and avoid the gas to cause wearing and tearing to self, also can completely cut off the influence of high temperature simultaneously, high temperature resistance is better, some seal gaskets that have solved current are when receiving stress extrusion, produce deformation easily, the problem of sealed effect is influenced.

Description

Sealing gasket for gas pipe

Technical Field

The utility model relates to a gasket technical field specifically is a seal gasket for gas pipe.

Background

The sealing gasket is a connecting lining used between mechanical connecting pieces and a sealing element used between the mechanical connecting pieces, and has the functions of isolating the inside from the outside and sealing. The gas pipe is the pipeline of carrying combustible gas, connects through the flange between the gas pipe, simultaneously in order to guarantee the leakproofness of connecting between the flange, installs seal gasket additional usually between the flange, and seal gasket mostly is the gasket of annular metal material.

The gas is when passing the flange, also pass seal gasket, the gas rubs with seal gasket's inner circle each other, long-term use gets off, seal gasket has received wearing and tearing, sealed effect is difficult to guarantee, long service life is short, the friction also can produce the heat simultaneously, the gas frequently rubs with the gasket, must lead to seal gasket's temperature to rise, high temperature leads to seal gasket to produce deformation easily, influence sealed effect, gas pipeline is along with the change of four seasons temperature, the stress that the pipeline thermal expansion produced, make the flange on both sides cause serious extrusion to the gasket, also cause gasket deformation easily, and when external environment temperature is lower, the pipeline shrink makes the flange not produce the extrusion to the gasket, the gasket of deformation this moment leaves the gap very easily and between the flange, influence sealed effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal gasket for gas pipe to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a seal gasket for gas pipe, includes the first gasket body and the second gasket body, the back of the first gasket body is fixed with the activity circle, the second gasket body has been close to the surface of first gasket body one side and has been seted up the activity groove, the inside in activity groove is provided with a plurality of compression spring, compression spring's one end is fixed with the inner wall in activity groove, compression spring's the other end is fixed with the activity circle, the surface of the internal side of first gasket body and second gasket all is provided with thermal-insulated protective layer, thermal-insulated protective layer comprises insulating layer, high temperature resistant layer and wear-resistant metal layer, the insulating layer sets up the one side on high temperature resistant layer, wear-resistant metal layer fixes the opposite side on high temperature resistant layer.

Preferably, the inner wall of the movable groove is provided with a sliding groove, the surface of the movable ring is fixed with a plurality of sliding blocks, and the sliding blocks are connected with the inner wall of the sliding groove in a sliding manner.

Preferably, the number of the sliding blocks is six, and the number of the sliding grooves corresponds to the number of the sliding blocks.

Preferably, the heat insulation layer is made of basalt fiber materials, and the high temperature resistant layer is made of tetrafluoroethylene.

Preferably, the shape of the inner wall of the movable groove is annular, and the shape of the movable ring is the same as that of the inner wall of the movable groove.

Preferably, the outer diameter of the first gasket body is the same as that of the second gasket body, and the first gasket body and the second gasket body are both made of stainless steel.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses can reduce the thickness of self at the in-process that receives stress extrusion, prevent that gasket itself from producing deformation because of the extrusion, and hug closely the inner wall of flange when the extrusion that does not receive, sealed effect has been guaranteed, the wearability of this sealed pad is better simultaneously, and avoid the gas to cause wearing and tearing to self, also can completely cut off the influence of high temperature simultaneously, high temperature resistance is better, some current seal gaskets when receiving stress extrusion have been solved, produce deformation easily, influence the problem of sealed effect.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of a partial three-dimensional structure of the present invention;

fig. 3 is a schematic perspective view of the first gasket body of the present invention;

fig. 4 is a schematic structural view of the middle thermal insulation protective layer of the present invention.

In the figure: 1. a first gasket body; 2. a second gasket body; 3. a heat insulating protective layer; 31. a thermal insulation layer; 32. a high temperature resistant layer; 33. a wear-resistant metal layer; 4. a movable groove; 5. a compression spring; 6. a movable ring; 7. a chute; 8. a slide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Referring to fig. 1-4, a sealing gasket for a gas pipe comprises a first gasket body 1 and a second gasket body 2, wherein a movable ring 6 is fixed on the back of the first gasket body 1, the outer diameter of the first gasket body 1 is the same as that of the second gasket body 2, so that inconvenience in installation caused by different sizes of the two gasket bodies is avoided, the first gasket body 1 and the second gasket body 2 are made of stainless steel, a movable groove 4 is formed in the surface of the second gasket body 2, which is close to one side of the first gasket body 1, the inner wall of the movable groove 4 is annular, the shape of the movable ring 6 is the same as that of the inner wall of the movable groove 4, so that the movable ring 6 can smoothly enter the movable groove 4 and slide in the movable groove 4, a plurality of compression springs 5 are arranged in the movable groove 4, the number of the compression springs 5 is a plurality of annular arrays, one end of a compression spring 5 is fixed with the inner wall of the movable groove 4, the other end of the compression spring 5 is fixed with the movable ring 6, the surfaces of the inner sides of the first gasket body 1 and the second gasket body 2 are respectively provided with a heat insulation protective layer 3, the heat insulation protective layer 3 is composed of a heat insulation layer 31, a high temperature resistant layer 32 and a wear-resistant metal layer 33, the heat insulation layer 31 is arranged at one side of the high temperature resistant layer 32, the wear-resistant metal layer 33 is fixed at the other side of the high temperature resistant layer 32, the thickness of the gasket can be reduced in the stress extrusion process, the gasket is prevented from being deformed due to extrusion, the gasket clings to the inner wall of the flange when not extruded, the sealing effect is ensured, meanwhile, the wear resistance of the gasket is better, the gas is prevented from wearing on the gasket, the influence of high temperature can be isolated, the high temperature resistance is better, and the problem that when some existing sealing gaskets are extruded by stress is solved, easily generates deformation and influences the sealing effect.

In order to prevent that activity circle 6 breaks away from the inside of activity groove 4 under compression spring 5's effect, spout 7 has been seted up to the inner wall of activity groove 4, the fixed surface of activity circle 6 has a plurality of slider 8, and the inner wall sliding connection of slider 8 and spout 7, thereby make activity circle 6 in the motion process, slider 8 is at the inner wall motion of spout 7, carry on spacingly to the motion range of activity circle 6, the quantity of slider 8 is six groups, and the quantity of spout 7 corresponds each other with the quantity of slider 8.

The heat insulation layer 31 is made of basalt fiber material, the basalt fiber is a novel inorganic environment-friendly green high-performance fiber material, and the heat insulation layer has multiple excellent performances of electrical insulation, corrosion resistance, heat insulation and the like, so that the overall heat insulation performance of the gasket is improved, and the high-temperature resistant layer 32 is made of tetrafluoroethylene so that the gasket is more resistant to high temperature due to the fact that the tetrafluoroethylene has high temperature resistance.

The working principle is as follows: in the use, when this gasket receives the stress extrusion that comes from the both sides flange, first gasket body 1 and second gasket body 2 are close to each other, simultaneously the movable ring 6 moves in the inside of activity groove 4, and make compression spring 5 be in compression state, thereby make the total thickness of first gasket body 1 and second gasket body 2 diminish, prevent effectively that this gasket from taking place deformation under the effect of stress, and when the flange did not lead to the fact the extrusion to the gasket, compression spring 5's reaction force makes first gasket body 1 and second gasket body 2 all laminate the inner wall of flange, the leakproofness has been guaranteed, wear-resisting metal layer 33 sets up at the most inboard simultaneously, its gas contact with the inside transport of pipeline, and provide wear-resisting protection for this gasket, and insulating layer 31 can isolated high temperature, reduce the influence of high temperature to gasket itself, including the setting of high temperature resistant layer 32, make this gasket more high temperature resistant, be difficult for producing deformation.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sealing gasket for gas pipes, comprising a first gasket body (1) and a second gasket body (2), characterized in that: the utility model discloses a heat-insulating gasket for automobile seat, including first gasket body (1), second gasket body (2), movable groove (4) have been seted up on the surface that the back of first gasket body (1) is fixed with movable ring (6), the inside in movable groove (4) is provided with a plurality of compression spring (5), the one end of compression spring (5) is fixed with the inner wall in movable groove (4), the other end and the movable ring (6) of compression spring (5) are fixed, the surface of first gasket body (1) and second gasket body (2) inboard all is provided with thermal-insulated protective layer (3), thermal-insulated protective layer (3) comprise insulating layer (31), high temperature resistant layer (32) and wear-resistant metal layer (33), insulating layer (31) set up the one side on high temperature resistant layer (32), the opposite side on high temperature resistant layer (32) is fixed in wear-resistant metal layer (33).

2. A sealing gasket for a gas tube according to claim 1, wherein: the inner wall of activity groove (4) has seted up spout (7), the fixed surface of activity circle (6) has a plurality of slider (8), and the inner wall sliding connection of slider (8) and spout (7).

3. A sealing gasket for a gas tube according to claim 2, wherein: the number of the sliding blocks (8) is six, and the number of the sliding grooves (7) corresponds to the number of the sliding blocks (8).

4. A sealing gasket for a gas tube according to claim 1, wherein: the heat insulation layer (31) is made of basalt fiber materials, and the high-temperature resistant layer (32) is made of tetrafluoroethylene.

5. A sealing gasket for a gas pipe according to claim 1, wherein: the shape of the inner wall of the movable groove (4) is annular, and the shape of the movable ring (6) is the same as that of the inner wall of the movable groove (4).

6. A sealing gasket for a gas tube according to claim 1, wherein: the outer diameter of the first gasket body (1) is the same as that of the second gasket body (2), and the first gasket body (1) and the second gasket body (2) are both made of stainless carbon steel.