CN209909150U - Flexible graphite gasket with concave arc inner ring and concave arc outer ring - Google Patents
Flexible graphite gasket with concave arc inner ring and concave arc outer ring Download PDFInfo
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- CN209909150U CN209909150U CN201920419424.XU CN201920419424U CN209909150U CN 209909150 U CN209909150 U CN 209909150U CN 201920419424 U CN201920419424 U CN 201920419424U CN 209909150 U CN209909150 U CN 209909150U
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- Prior art keywords
- flexible graphite
- outer ring
- inner ring
- ring
- gasket
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000010439 graphite Substances 0.000 title claims abstract description 83
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 83
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000005406 washing Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 7
- 239000010425 asbestos Substances 0.000 description 6
- 229910052895 riebeckite Inorganic materials 0.000 description 6
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the technical field of it is sealed, concretely relates to flexible graphite gasket of interior outer ring of concave circular arc in area. The gasket is formed by combining an inner ring, an outer ring and flexible graphite, the flexible graphite is arranged between the inner ring and the outer ring, one sides of the inner ring and the outer ring, which are in contact with the flexible graphite, are provided with concave arcs, the flexible graphite is pressed between the inner ring and the outer ring, and the flexible graphite cannot be separated from the inner ring and the outer ring due to the relation of the concave arcs of the inner ring and the outer ring, so that the flexible graphite and the inner ring and the outer ring form an integral gasket. Because the flexible graphite is positioned between the inner ring and the outer ring and is pressed into a whole, the gasket cannot be lost due to the washing of a fluid medium even if the gasket is installed in an incompletely closed space, and the sealing performance can be kept for a long time.
Description
Technical Field
The utility model belongs to the technical field of it is sealed, concretely relates to flexible graphite gasket of interior outer ring of concave circular arc in area.
Background
The common flexible graphite gasket structure is shown in figure 1, is formed by pressing pure flexible graphite and has good sealing performance.
The flexible graphite gasket is punched or cut from a pure graphite plate, has good corrosion resistance, high/low temperature resistance, good compression resilience and high strength, and various circular complex geometric gaskets are widely used for pipelines, valves, pumps, pressure vessels, heat exchangers, condensers, generators, air compressors, exhaust pipes, refrigerators and the like.
The flexible graphite is also called expanded graphite, which takes scale graphite as raw material and generates an interlaminar compound through chemical treatment.
At the high temperature of 800-. Loose and porous, and has elasticity. Working under high temperature, high pressure or radiation condition, no decomposition, deformation or aging, and stable chemical property.
The birth of the flexible graphite declares that the development of the ancient board in the chemical sealing field will be finished. Compared with asbestos gaskets, flexible graphite has the following obvious advantages:
no radiation and no pollution.
The flexible graphite contains no harmful components to human body, while the asbestos product has the harm of radiating human body and can pollute environment.
Secondly, the high temperature resistance.
The flexible graphite reinforced composite gasket can resist the high temperature of 1650 ℃, and even if chemical equipment is melted, the gasket is still safe and innocent.
The crystal water inside the asbestos product is decomposed at 500 ℃, so that the asbestos product is pulverized and loses efficacy.
Thirdly, the application range is wide.
Besides strong oxidizing acid, the flexible graphite can resist most chemical media, including radioactive chemical media, while the asbestos product has poor adaptability and cannot be used for the radioactive media.
Some chemical towers, heat exchangers and the like require that the connecting parts are not heat-insulated, flexible graphite can be used, and stone plate products cannot be used.
Fourthly, the use is simple, convenient and quick.
The gasket coefficient of the flexible graphite is only half of that of the asbestos product, that is, the tightening force of the screw can be much smaller to achieve the same sealing effect.
The flexible graphite has the obvious characteristics, and also has the characteristics of excellent sealing performance, compressibility, good elasticity and oxidation resistance, and has extremely strong self-lubricating property and plasticity.
Meanwhile, the composite material has the characteristics of good conductivity, high specific gravity, high density and the like, and can be used for manufacturing various pipelines, flange gaskets and the like for adjusting diesel engines, compressors and the like.
The disadvantages of the above structure: a flexible graphite gasket needs to be installed in a closed space to obtain a good sealing effect.
If not installed in a closed space, the flexible graphite will be lost under the scouring of the fluid medium and gradually lose the sealing performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned defect that exists to prior art, provide the utility model provides a take flexible graphite gasket of concave circular arc inner and outer ring, the gasket of this structure can be installed in incomplete confined space, can not run off because of fluid medium's washing away, can keep sealing performance for a long time.
The technical scheme of the utility model as follows:
the flexible graphite gasket with the concave arc inner ring and the concave arc outer ring is formed by combining the inner ring, the outer ring and flexible graphite, the flexible graphite is arranged between the inner ring and the outer ring, one sides of the inner ring and the outer ring, which are in contact with the flexible graphite, are provided with the concave arcs, the flexible graphite is pressed between the inner ring and the outer ring, and the flexible graphite cannot be separated from the inner ring and the outer ring due to the relation of the concave arcs of the inner ring and the outer ring, so that the flexible graphite gasket and the inner ring and the outer ring form a whole gasket.
A flexible graphite gasket with concave arc inner and outer rings is characterized in that the distance C between the bottom of an arc and the edges of the inner ring and the outer ring is 0.5 mm-1 mm.
A flexible graphite gasket with concave arc inner and outer rings is characterized in that the distance C between the bottom of an arc and the edges of the inner ring and the outer ring is 0.75 mm.
The flexible graphite gasket with the concave arc inner ring and the concave arc outer ring is characterized in that the thickness of flexible graphite is larger than that of the inner ring and the outer ring, and the thickness H of the inner ring and the outer ring is 70% -80% of the thickness H of the flexible graphite so as to control the appropriate compression amount of the flexible graphite.
The utility model provides a thickness H of inner ring and outer loop is 75% of flexible graphite thickness H for the flexible graphite gasket of area concave circular arc inner and outer loop.
A flexible graphite gasket with concave arc inner and outer rings is characterized in that flexible graphite is arranged between the inner ring and the outer ring, and the flexible graphite, the inner ring and the outer ring are pressed into an integral gasket.
A flexible graphite gasket with concave arc inner and outer rings is provided, wherein the inner ring and the outer ring are made of metal materials.
The beneficial effects of the utility model reside in that:
because the flexible graphite is positioned between the inner ring and the outer ring and is pressed into a whole, the gasket cannot be lost due to the washing of a fluid medium even if the gasket is installed in an incompletely closed space, and the sealing performance can be kept for a long time.
Drawings
Fig. 1 shows a conventional flexible graphite gasket structure.
Fig. 2 is a flexible graphite gasket structure with concave circular arc inner and outer rings of the present invention.
In the figure: 1, flexible graphite; 2, outer ring; 3 inner ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in the attached drawing, the flexible graphite gasket structure with the concave arc inner ring and the concave arc outer ring is formed by combining an inner ring 3, an outer ring 2 and flexible graphite 1, wherein the inner ring 3 and the outer ring 2 are made of metal materials, and the flexible graphite 1 is arranged between the inner ring 3 and the outer ring 2.
The contact sides of the inner ring 3 and the outer ring 2 with the flexible graphite 1 are provided with a concave arc, and the distance C between the bottom of the arc and the edges of the inner ring 3 and the outer ring 2 is about 0.5 mm-1 mm.
The thickness of the flexible graphite 1 is larger than that of the inner ring 3 and the outer ring 2, and the thickness H of the inner ring 3 and the outer ring 2 is 70-80% of the thickness H of the flexible graphite 1 so as to control the appropriate compression amount of the flexible graphite 1.
And flexible graphite 1 is arranged between the inner ring 3 and the outer ring 2, and the flexible graphite 1, the inner ring 3 and the outer ring 2 are pressed into an integral gasket.
The distance C between the bottom of the circular arc and the edges of the inner ring 3 and the outer ring 2 is 0.75 mm.
The thickness H of the inner ring 3 and the outer ring 2 is 75% of the thickness H of the flexible graphite 1.
Because the flexible graphite 1 is pressed between the inner ring 3 and the outer ring 2, and because of the relationship of the concave arcs of the inner ring 3 and the outer ring 2, the flexible graphite 1 cannot be separated from the inner ring 3 and the outer ring 2, thereby forming an integral gasket with the inner ring 3 and the outer ring 2.
Therefore, even if the sealing device is installed in an incompletely closed space, the sealing device can not be lost due to the flushing of the fluid medium, and the sealing performance can be kept for a long time.
Claims (7)
1. The utility model provides a take flexible graphite gasket of concave circular arc inner and outer ring, is formed by inner ring (3), outer loop (2) and flexible graphite (1) combination, is provided with flexible graphite (1) between inner ring (3) and outer loop (2), its characterized in that: one sides of the inner ring (3) and the outer ring (2) which are in contact with the flexible graphite (1) are provided with concave arcs, the flexible graphite (1) is pressed between the inner ring (3) and the outer ring (2), and the flexible graphite (1) cannot be separated from the inner ring (3) and the outer ring (2) due to the relation of the concave arcs of the inner ring (3) and the outer ring (2), so that the flexible graphite and the inner ring (3) and the outer ring (2) form an integral gasket.
2. The flexible graphite gasket with concave arc inner and outer rings as claimed in claim 1, wherein: the distance C between the bottom of the circular arc and the edges of the inner ring (3) and the outer ring (2) is 0.5 mm-1 mm.
3. The flexible graphite gasket with concave arc inner and outer rings as claimed in claim 2, wherein: the distance C between the bottom of the circular arc and the edges of the inner ring (3) and the outer ring (2) is 0.75 mm.
4. The flexible graphite gasket with concave arc inner and outer rings as claimed in claim 1, wherein: the thickness of the flexible graphite (1) is larger than that of the inner ring (3) and the outer ring (2), and the thickness H of the inner ring (3) and the outer ring (2) is 70-80% of the thickness H of the flexible graphite (1) so as to control the appropriate compression amount of the flexible graphite (1).
5. The flexible graphite gasket with concave arc inner and outer rings as claimed in claim 4, wherein: the thickness H of the inner ring (3) and the outer ring (2) is 75% of the thickness H of the flexible graphite (1).
6. The flexible graphite gasket with concave arc inner and outer rings as claimed in claim 1, wherein: and flexible graphite (1) is arranged between the inner ring (3) and the outer ring (2), and the flexible graphite (1), the inner ring (3) and the outer ring (2) are pressed into an integral gasket.
7. The flexible graphite gasket with concave arc inner and outer rings as claimed in any one of claims 1-6, wherein: wherein the inner ring (3) and the outer ring (2) are made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920419424.XU CN209909150U (en) | 2019-03-29 | 2019-03-29 | Flexible graphite gasket with concave arc inner ring and concave arc outer ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920419424.XU CN209909150U (en) | 2019-03-29 | 2019-03-29 | Flexible graphite gasket with concave arc inner ring and concave arc outer ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209909150U true CN209909150U (en) | 2020-01-07 |
Family
ID=69033755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920419424.XU Expired - Fee Related CN209909150U (en) | 2019-03-29 | 2019-03-29 | Flexible graphite gasket with concave arc inner ring and concave arc outer ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209909150U (en) |
-
2019
- 2019-03-29 CN CN201920419424.XU patent/CN209909150U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200107 |