CN213117456U

CN213117456U - Special sealing gasket for hump pipe

Info

Publication number: CN213117456U
Application number: CN202021572207.3U
Authority: CN
Inventors: 岑国峰
Original assignee: Ningbo Xinrun Sealing Technology Co ltd
Current assignee: Ningbo Xinrun Sealing Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-05-04
Anticipated expiration: 2030-07-31

Abstract

The utility model relates to a special sealed pad of hump pipe, including the gasket, its characterized in that: the gasket is cyclic annular, including supplying the hump pipe to pass and the first through-hole and the second through-hole that link up each other, the gasket has circumference confined perisporium between first through-hole and second through-hole, perisporium top-down leans out gradually, and the perisporium is formed with contained angle alpha with the top of gasket to alpha is more than or equal to 30 and is less than or equal to 45, compares with prior art, the utility model has the advantages of the special sealed pad of hump pipe has first through-hole and the second through-hole that supplies the hump pipe to between first through-hole and second through-hole, and the circumference confined perisporium that top-down leaned out gradually, can be used for compensating the required seal space of hump pipe better, thereby improves sealing reliability.

Description

Special sealing gasket for hump pipe

Technical Field

The utility model relates to a sealing element who uses on equipment such as pipeline or pressure vessel, concretely relates to special sealed pad of hump pipe.

Background

In industrial equipment such as hump pipelines, valves, pumps, pressure vessels, heat exchangers, condensers and the like, sealing elements are often used, and gaskets are the most widely and commonly applied parts of the sealing elements. The gasket not only can keep the sealing performance of the equipment, but also can solve the abrasion problem of the connecting piece, and the gasket sealing is also the most main static sealing mode of detachable parts such as a pressure container, process equipment, a power machine, a connecting pipeline and the like in a process industrial device. The fluid seal is realized by the close contact between the flange and the gasket, and the leakage channel is reduced or blocked by the elastic-plastic deformation of the gasket so as to increase the flow resistance. Gasket seals typically employ a bolted flange connection, wherein the gasket is a critical element that affects the performance of the bolted flange seal connection. With the rapid development of modern science and technology, process 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, the 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 composite sealing gasket commonly used at present mainly comprises a metal wound gasket, a metal coated gasket, a metal tooth punching plate flexible graphite composite gasket and a flexible graphite metal wave tooth composite gasket. For this reason, when the working conditions are severe, such as under the conditions of high temperature and high pressure while enduring impact, alternating load and thermal cycle, the sealing element is commonly used to cause the failure of the sealing connection due to the deterioration of materials and the structural relaxation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a special sealed pad of hump pipe is provided to above-mentioned prior art current situation and improves sealing reliability.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this special sealed pad of hump pipe, including the gasket, its characterized in that: the gasket is annular and comprises a first through hole and a second through hole which are used for a hump pipe to pass through and are communicated with each other, a circumferential closed circumferential wall is arranged between the first through hole and the second through hole of the gasket, the circumferential wall is gradually inclined outwards from top to bottom, an included angle alpha is formed between the circumferential wall and the top end of the gasket, and the alpha is more than or equal to 30 degrees and less than or equal to 45 degrees.

In order to improve the sealing reliability, the gasket is preferably compounded by at least two layers of graphite reinforced gaskets and a corrugated gasket clamped between the two adjacent layers of graphite reinforced gaskets.

Further, the graphite reinforced pad comprises a graphite sealing layer which is arranged on the inner ring in a laminated mode and a mica and/or glass fiber sealing layer which is located on the periphery of the inner ring. The graphite can resist high temperature, and meanwhile, the mica or glass fiber sealing layer is arranged close to the outer ring by utilizing the characteristic of strong rigidity of the mica or glass fiber sealing layer, so that the prepared special sealing gasket for the hump tube ensures that the heat resistance is improved and the easy cleaning performance is also ensured.

Further, the corrugated pad is S-shaped. The corrugated pad effectively improves the integral anti-extrusion strength of the special sealing pad for the hump pipe.

Further, a support ring is arranged between the graphite sealing layer of the inner ring and the mica and/or glass fiber sealing layer positioned on the periphery of the inner ring. The arrangement of the support ring effectively further improves the anti-extrusion strength of the special sealing gasket for the hump pipe.

Further, the support ring is a V-shaped support ring, and the angle beta of the V shape is 20-25 degrees. The support ring is V-shaped, the extension space of the support ring in the compression process can be increased, the compression stroke is increased, the support steel belt is prevented from being easily separated under impact and pressure vibration to achieve a better sealing effect, meanwhile, the V-shaped support steel belt is set into multiple V shapes, the thickness and the width of the support ring are adjusted, the bearing capacity, the deformation resistance and the supporting area of the support ring can be greatly improved, and meanwhile, the strength between the graphite sealing layer of the inner ring and the mica and/or glass fiber sealing layer positioned on the periphery of the inner ring is increased.

Compared with the prior art, the utility model has the advantages of the special sealed pad of hump pipe has first through-hole and the second through-hole that supplies the hump pipe to between first through-hole and second through-hole, and top-down lean out the circumference confined perisporium gradually, can be used for compensating the required seal space of hump pipe better, thereby improve sealing reliability.

Drawings

Fig. 1 is a schematic structural view of a special sealing gasket for a hump pipe in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is an enlarged schematic view of a point a in fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in FIGS. 1 to 3, the preferred embodiment of the present invention is shown. The special sealing gasket for the hump pipe comprises a gasket 1, wherein the gasket 1 is annular and comprises a first through hole 11 and a second through hole 12 which are used for the hump pipe to pass through and are communicated with each other, a circumferential closed circumferential wall 13 is arranged between the first through hole 11 and the second through hole 12 of the gasket 1, the circumferential wall 13 inclines outwards gradually from top to bottom, an included angle alpha is formed between the circumferential wall 13 and the top end of the gasket 1, and alpha is more than or equal to 30 degrees and less than or equal to 45 degrees, the special sealing gasket for the hump pipe comprises the first through hole 11 and the second through hole 12 which are used for the hump pipe to pass through, and the circumferential closed circumferential wall 13 which inclines outwards gradually from top to bottom is arranged between the first through hole 11 and the second through hole 12, so that the sealing space required by the hump pipe can be better.

Specifically, the gasket 1 is formed by compounding at least two graphite reinforcing mats 14 and a corrugated mat 15 sandwiched between the adjacent two graphite reinforcing mats 14. The graphite reinforced pad 14 comprises a graphite sealing layer 141 stacked on the inner ring and a mica and/or glass fiber sealing layer 142 positioned on the periphery of the inner ring, the corrugated pad 15 is S-shaped, a support ring 143 is further arranged between the graphite sealing layer 141 positioned on the inner ring and the mica and/or glass fiber sealing layer 142 positioned on the periphery of the inner ring, the support ring 143 is a V-shaped support ring 143, the angle beta of the V shape is 20-25 degrees, the graphite can resist high temperature, and meanwhile, the mica or glass fiber sealing layer 142 is arranged close to the outer ring by utilizing the characteristic of strong rigidity of the mica or glass fiber sealing layer 142, so that the prepared special sealing pad for the hump tube ensures the improvement of heat resistance and also ensures the easy cleaning property; the S-shaped corrugated pad 15 and the support ring 143 are arranged together to effectively improve the overall anti-extrusion strength of the special sealing gasket for the hump tube, meanwhile, the arrangement of the V-shaped support ring 143 can increase the extension space of the support ring 143 in the compression process, increase the compression stroke, prevent the V-shaped support ring 143 from being easily separated under impact and pressure vibration to achieve a better sealing effect, meanwhile, the V-shaped support ring 143 is arranged in a V shape, namely, the thickness and the width of the V-shaped support ring 143 are adjusted, the bearing capacity, the deformation resistance and the supporting area of the V-shaped support ring 143 can be greatly improved, and meanwhile, the strength between the graphite sealing layer 141 of the inner ring and the mica and/or glass fiber sealing layer 142 positioned on the periphery of the inner ring is also increased.

Claims

1. The utility model provides a special sealed pad of hump pipe, is including gasket (1), its characterized in that: the gasket (1) is annular and comprises a first through hole (11) and a second through hole (12) which are used for a hump pipe to pass through and are communicated with each other, a circumferential wall (13) with a circumferential sealing is arranged between the first through hole (11) and the second through hole (12) of the gasket (1), the circumferential wall (13) is gradually inclined outwards from top to bottom, an included angle alpha is formed between the circumferential wall (13) and the top end of the gasket (1), and the angle alpha is more than or equal to 30 degrees and less than or equal to 45 degrees.

2. The special gasket for the hump pipe according to claim 1, characterized in that: the gasket (1) is formed by compounding at least two layers of graphite reinforcing pads (14) and a corrugated pad (15) clamped between the two adjacent layers of graphite reinforcing pads (14).

3. The special gasket for the hump pipe according to claim 2, characterized in that: the graphite reinforcing pad (14) comprises a graphite sealing layer (141) which is arranged on the inner ring in a laminated mode and a mica and/or glass fiber sealing layer (142) which is located on the periphery of the inner ring.

4. The special gasket for the hump pipe according to claim 3, characterized in that: the corrugated pad (15) is S-shaped.

5. The hump tube dedicated sealing gasket according to claim 4, characterized in that: and a support ring (143) is also arranged between the graphite sealing layer (141) of the inner ring and the mica and/or glass fiber sealing layer (142) positioned on the periphery of the inner ring.

6. The hump tube dedicated sealing gasket according to claim 5, characterized in that: the support ring (143) is a V-shaped support ring (143), and the angle beta of the V shape is 20-25 degrees.