CN218236260U

CN218236260U - Sealing structure for safety valve

Info

Publication number: CN218236260U
Application number: CN202220111010.2U
Authority: CN
Inventors: 曹宏
Original assignee: Adinod Machinery Jiangsu Co ltd
Current assignee: Adinod Machinery Jiangsu Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2023-01-06
Anticipated expiration: 2032-01-17

Abstract

The utility model discloses a seal structure for relief valve relates to the sealed technical field of relief valve, for solving current relief valve in the junction with the pipeline, only seal through single sealing washer, because the relief valve need bear fluidic high pressure, consequently after long-time use, the sealing washer can not be fine provide good sealed problem of operation for relief valve and pipe connection department. The sealing member body includes first sealed section and the sealed section of second, be provided with sealed gas tank on the side surface of the sealed section of second, the inside of first sealed section and the sealed section of second is provided with gas flow channel, glue adhesion has rubber gasbag on one end of first sealed section, gas flow channel's both ends communicate with each other with the inside of rubber gasbag and sealed gas tank respectively, sealed gas tank opening part glue adhesion has the elastic rubber piece.

Description

Sealing structure for safety valve

Technical Field

The utility model relates to a sealed technical field of relief valve specifically is a seal structure for relief valve.

Background

The safety valve is a special valve that a starting and closing piece is in a normally closed state under the action of external force, when the medium pressure in equipment or a pipeline rises and exceeds a specified value, the medium pressure in the pipeline or the equipment is prevented from exceeding the specified value by discharging the medium to the outside of a system, and the sealing performance of the joint of the safety valve and an external pipeline needs to be ensured while the sealing performance of the internal structure of the safety valve is required to be ensured in the using process of the safety valve.

The existing safety valve is only sealed by a single sealing ring at the joint of the safety valve and a pipeline, and the safety valve needs to bear the high pressure of fluid, so that the sealing ring cannot well provide good sealing operation for the joint of the safety valve and the pipeline after long-time use; therefore, the market is urgently in need of developing a sealing structure for a safety valve to help people to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal structure for relief valve to solve among the above-mentioned background art current relief valve in with the junction of pipeline, only seal through single sealing washer, because the relief valve need bear fluidic high pressure, consequently after long-time use, the sealing washer can not be fine provide good sealed problem of operation for relief valve and pipe connection department.

In order to achieve the above purpose, the utility model provides a following technical scheme: a sealing structure for a safety valve comprises a sealing piece body, wherein the sealing piece body comprises a first sealing section and a second sealing section, a sealing air groove is formed in the side surface of the second sealing section, an air flow channel is arranged inside the first sealing section and the second sealing section, a rubber air bag is adhered to one end surface of the first sealing section through glue, two ends of the air flow channel are communicated with the rubber air bag and the inside of the sealing air groove respectively, and an elastic rubber sheet is adhered to the opening of the sealing air groove through glue.

Preferably, the first sealing section and the second sealing section are both circular, and the size of the flow aperture of the first sealing section is smaller than that of the flow aperture of the second sealing section.

Preferably, the gas flow channel and the rubber air bag are both provided with a plurality of gas flow channels, and the number of the gas flow channels is consistent with that of the rubber air bags, and the positions of the gas flow channels correspond to those of the rubber air bags one to one.

Preferably, a safety valve seat is arranged outside the sealing element body, a flow pipeline is fixedly connected to the outer surface of the safety valve seat, and the sealing element body is located at the joint of the flow pipeline.

Preferably, the rubber bladder is located inside the flow conduit and the rubber bladder is placed in the fluid.

Preferably, the first seal segment and the second seal segment are integrally connected.

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

1. the utility model discloses a make the sealing member body include first sealed section and the sealed section of second, be provided with sealed gas tank on the side surface of the sealed section of second, the inside of first sealed section and the sealed section of second is provided with gas flow channel, glue adhesion has rubber gasbag on a terminal surface of first sealed section, gas flow channel's both ends communicate with each other with the inside of rubber gasbag and sealed gas tank respectively, sealed gas tank opening part glue adhesion elasticity rubber piece, this can be at the in-process that uses the relief valve, the inside fluid of pipeline can produce the extrusion force to rubber gasbag, and then make the air in the rubber gasbag get into the inside of sealed gas tank along gas flow channel, the inside atmospheric pressure value of sealed gas tank increases this moment, and then make the elasticity rubber piece of sealed gas tank opening part outwards bulge, and then make the outside surface energy of elasticity rubber piece tightly laminate on pipeline's inner wall, the effectual pipeline internal fluid pressure that has realized is big more, the laminating of elasticity rubber piece and pipeline is inseparable, the effectual leakproofness that has improved this seal structure.

Drawings

Fig. 1 is an overall schematic view of the present invention;

fig. 2 is an overall schematic view of the sealing member body of the present invention;

fig. 3 is the internal structure view of the sealing element body of the present invention.

In the figure: 1. a safety valve seat; 2. a flow conduit; 3. a seal body; 4. a rubber air bag; 5. an elastic rubber sheet; 6. a gas flow channel; 7. sealing the air groove; 8. a first seal section; 9. a second seal segment.

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.

Referring to fig. 1-3, the present invention provides an embodiment: a sealing structure for a safety valve comprises a sealing element body 3, wherein the sealing element body 3 comprises a first sealing section 8 and a second sealing section 9, a sealing air groove 7 is formed in the side surface of the second sealing section 9, an air flow channel 6 is arranged inside the first sealing section 8 and the second sealing section 9, a rubber air bag 4 is adhered to one end surface of the first sealing section 8 through glue, two ends of the air flow channel 6 are respectively communicated with the rubber air bag 4 and the inside of the sealing air groove 7, an elastic rubber sheet 5 is adhered to glue at the opening of the sealing air groove 7, the first sealing section 8 and the second sealing section 9 are both in a circular ring shape, the size of the flow aperture of the first sealing section 8 is smaller than that of the flow aperture of the second sealing section 9, the air flow channel 6 and the rubber air bag 4 are both provided with a plurality of air, the number of the air flow channel 6 and the rubber air bag 4 are consistent, and the positions of the air flow channel 6 and the rubber air bag 4 are in one-to one correspondence, rubber gasbag 4 is located the inside of circulation pipeline 2, and rubber gasbag 4 arranges the fluid in, first sealed section 8 and the 9 body coupling of second sealed section, this can be at the in-process of using the relief valve, the inside fluid of pipeline can produce the extrusion force to rubber gasbag 4, and then make the air in rubber gasbag 4 get into the inside of sealed gas tank 7 along gas flow channel 6, the inside atmospheric pressure value of sealed gas tank 7 increases this moment, and then make the outside protrusion of elastic rubber piece 5 of sealed gas tank 7 opening part, and then make the laminating that the outside surface energy of elastic rubber piece 5 is tight on pipeline's inner wall, the effectual pipeline that has realized fluid pressure is big more, the laminating of elastic rubber piece 5 and pipeline is inseparabler, the effectual leakproofness that has improved this seal structure.

Further, the outside of sealing member body 3 is provided with relief valve disk seat 1, and fixedly connected with flow pipe 2 on the surface of relief valve disk seat 1, sealing member body 3 is located the kneck of flow pipe 2.

The working principle is as follows: during the use, install this relief valve in appointed pipeline earlier, when having the fluid to pass through in the pipeline, the rubber gasbag 4 that is located the pipeline inside is inside sunken under the extrusion force of fluid, the air in the rubber gasbag 4 gets into the inside of sealed air pocket 7 along gas flow channel 6 this moment, the atmospheric pressure value of sealed air pocket 7 inside increases, and then make the elastic rubber piece 5 of sealed air pocket 7 opening part outwards protrusion, and then make the laminating that the outside surface ability of elastic rubber piece 5 can be tight on pipeline's inner wall, the effectual pipeline internal fluid pressure that has realized is big more, the laminating of elastic rubber piece 5 and pipeline is inseparabler.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A seal structure for a safety valve, comprising a seal body (3), characterized in that: sealing member body (3) are including first sealed section (8) and the sealed section of second (9), be provided with sealed gas tank (7) on the side surface of the sealed section of second (9), the inside of first sealed section (8) and the sealed section of second (9) is provided with gas flow channel (6), glue glues on the terminal surface of first sealed section (8) and has rubber gasbag (4), the both ends of gas flow channel (6) communicate with each other with the inside of rubber gasbag (4) and sealed gas tank (7) respectively, sealed gas tank (7) opening part glue adhesion has elastic rubber piece (5).

2. A sealing structure for a safety valve according to claim 1, characterized in that: the first sealing section (8) and the second sealing section (9) are both circular rings, and the size of the flow aperture of the first sealing section (8) is smaller than that of the flow aperture of the second sealing section (9).

3. A sealing structure for a safety valve according to claim 1, characterized in that: the gas flow channels (6) and the rubber air bags (4) are arranged in a plurality, and the gas flow channels (6) and the rubber air bags (4) are consistent in number and correspond to one another in position.

4. A sealing structure for a safety valve according to claim 1, characterized in that: the sealing element is characterized in that a safety valve seat (1) is arranged outside the sealing element body (3), a circulation pipeline (2) is fixedly connected to the outer surface of the safety valve seat (1), and the sealing element body (3) is located at the joint of the circulation pipeline (2).

5. A sealing structure for a safety valve according to claim 4, wherein: the rubber air bag (4) is positioned inside the circulating pipeline (2), and the rubber air bag (4) is placed in fluid.

6. A sealing structure for a safety valve according to claim 1, characterized in that: the first sealing section (8) and the second sealing section (9) are integrally connected.