CN212407556U - Winding gasket - Google Patents
Winding gasket Download PDFInfo
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- CN212407556U CN212407556U CN202020989015.6U CN202020989015U CN212407556U CN 212407556 U CN212407556 U CN 212407556U CN 202020989015 U CN202020989015 U CN 202020989015U CN 212407556 U CN212407556 U CN 212407556U
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- ring
- arc tooth
- sealing
- circular arc
- gasket
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Abstract
The utility model provides a winding gasket, include: the sealing device comprises an elastic metal ring of an inner ring, an arc tooth skeleton ring of an outer ring and a sealing body arranged between the elastic metal ring of the inner ring and the arc tooth skeleton ring of the outer ring. Through the technical scheme of the utility model, the elastic metal ring of inner circle, the circular arc tooth skeleton ring of outer lane and the sealed body that sets up between the two form multiple sealing jointly, have greatly reduced the risk of sealed inefficacy. The utility model provides a multiple sealing pattern combination of winding gasket, the line seal of existing inner circle elastic metal ring, the face seal mode have the arc tooth skeleton multiple-track sealing mode of outer lane again, and multiple sealing mode mutually supports, reduces the medium layer upon layer to the impact pressure of sealed face, forms the comprehensive sealing combination pattern of higher security level, has greatly reduced the risk of sealed inefficacy, has improved sealing performance.
Description
Technical Field
The utility model relates to a seal gasket technical field particularly, relates to a winding gasket.
Background
The wound gasket generally comprises a metal inner ring, a sealing body and a metal outer ring, wherein the sealing body is formed by spirally winding a metal belt and a non-metal belt. The V-shaped or W-shaped framework after the metal band is deformed provides continuous resilience force, so that the non-metal band is in contact with the flange surface to fill up microscopic unevenness to form effective sealing, and the metal inner ring and the metal outer ring only play roles in positioning and supporting. However, under some severe working conditions of high temperature, high pressure and frequent alternation of temperature and pressure, the V-shaped framework or the W-shaped framework of the wound gasket metal belt is easily affected by pressure, temperature change and mechanical vibration, so that stress relaxation occurs, and the resilience force is weakened to cause sealing failure.
Therefore, how to avoid the sealing failure caused by the stress relaxation of the metal band framework wound with the gasket under the harsh working condition becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
Therefore, the utility model aims to provide a can reduce the risk of sealed inefficacy to the winding gasket that the multiple sealed of stress relaxation phenomenon was compensated.
In order to achieve the above object, the present invention provides a winding gasket, including: the sealing device comprises an elastic metal ring of an inner ring, an arc tooth skeleton ring of an outer ring and a sealing body arranged between the elastic metal ring of the inner ring and the arc tooth skeleton ring of the outer ring.
Preferably, the elastic metal ring includes: the gasket comprises a circular ring-shaped elastomer, an intermediate alloy coating layer coated on the circular ring-shaped elastomer and a sealing layer coated on the intermediate alloy coating layer, wherein the cross section of the sealing layer along the radial direction is of a C-shaped structure with an opening facing the center of the wound gasket.
The sealing layer may be an overwrap sealing layer or an electroplated sealing layer.
Preferably, the annular elastic body is an annular spring or a hollow elastic ring.
Preferably, the circular-arc tooth skeleton ring comprises: the circular arc tooth framework, the cyclic annular circular arc tooth of circular arc tooth framework to the center department of winding gasket is crooked, cyclic annular circular arc tooth is a plurality of and both sides from top to bottom along the radial arrangement of circular arc tooth framework.
When the flange contacts with the annular circular arc teeth, a circle of small cavity can be formed between every two adjacent annular circular arc teeth, if under extreme conditions, when a medium rushes through the elastic metal ring and the sealing body, the medium can enter the small cavity, and by means of pressure of the medium, a plurality of circular arc teeth can be formed for self-tightening sealing, so that the risk of sealing failure is reduced.
The circular arc tooth framework can be made of stainless steel, such as 304 and 316L. The upper and lower circular arc teeth are symmetrical, and the distance between every two adjacent circular arc teeth is the same. 4-5 annular circular arc teeth can be respectively arranged on the upper side and the lower side along the radial direction of the circular arc tooth framework. And multiple self-tightening seals are adopted, so that the sealing firmness is stronger.
Preferably, the circular-arc tooth skeleton ring further comprises: and the flexible non-metal layers cover the upper side and the lower side of the circular arc tooth framework.
Preferably, the flexible non-metal layer is a thin plate material layer composed of one or more of graphite, mica and non-asbestos.
Preferably, the sealing body is formed by spirally winding a metal strip and a non-metal strip.
Preferably, the non-metal belt is wound after being subjected to a resin impregnation treatment.
Preferably, a cross section of the sealing body in a radial direction thereof has a V-shaped structure or a W-shaped structure opened toward a center of the wound gasket.
Preferably, the thickness of the circular arc tooth skeleton ring is smaller than the thickness of the elastic metal ring and the thickness of the sealing body.
The utility model provides a winding gasket has following beneficial technological effect:
(1) the elastic metal ring of the inner ring, the circular arc tooth skeleton ring of the outer ring and the sealing body arranged between the elastic metal ring and the circular arc tooth skeleton ring form multiple sealing together, and the risk of sealing failure is greatly reduced.
(2) The elastic metal ring of inner circle forms first heavy sealed, and wherein, the ring form elastomer is to providing lasting support elasticity to the master alloy coating all the time, and the during operation, sealing layer and flange face take place contact deformation, form the line seal, and along with operating pressure's rising, the ring form elastomer of medium permeable plays the supporting role to the master alloy coating moreover for first heavy sealed has from tight sealing performance simultaneously.
(3) The non-metal belt in the sealing body is wound after being impregnated by resin, so that air holes in the non-metal belt can be blocked, the phenomenon of permeation and leakage is reduced, and the sealing performance is further improved.
(4) The annular circular arc teeth on the circular arc tooth framework can form multi-track sealing, if extreme conditions occur, when the elastic metal ring and the sealing body are broken by a medium, the medium can enter the groove between the annular circular arc teeth, the multi-track circular arc tooth self-tightening sealing is formed by utilizing the pressure of the medium, and the risk of sealing failure is further reduced.
(5) The utility model provides a multiple sealing pattern combination of winding gasket, the line seal of existing inner circle elastic metal ring, the face seal mode have the arc tooth skeleton multiple-track sealing mode of outer lane again, and multiple sealing mode mutually supports, reduces the medium layer upon layer to the impact pressure of sealed face, forms the comprehensive sealing combination pattern of higher security level, has greatly reduced the risk of sealed inefficacy, has improved sealing performance.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic longitudinal section of a wound gasket according to an embodiment of the invention;
fig. 2 shows a schematic cross-sectional structure of a wound gasket according to an embodiment of the invention;
figure 3 shows a schematic view of a wound gasket according to an embodiment of the invention when it is in operation placed between two flanges,
wherein, the corresponding relationship between the reference numbers and the components in fig. 1 to 3 is:
102 elastic metal rings, 1022 circular ring-shaped elastic bodies, 1024 intermediate alloy coating layers, 1026 sealing layers, 104 circular arc tooth framework rings, 1042 circular arc tooth frameworks, 1044 circular arc teeth, 1046 flexible non-metal layers, 106 sealing bodies, 1062 metal bands, 1064 non-metal bands and 108 flanges.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A winding shim according to an embodiment of the present invention will be specifically described below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, the wound gasket according to the embodiment of the present invention includes an inner ring of elastic metal ring 102, an outer ring of circular arc tooth skeleton ring 104, and a sealing body 106 disposed therebetween. Thus, multiple seals are formed together, greatly reducing the risk of seal failure. The elastic metal ring 102 includes: the gasket comprises an annular elastic body 1022, an intermediate alloy coating layer 1024 coated on the annular elastic body 1022 and a sealing layer 1026 coated on the intermediate alloy coating layer 1024, wherein the cross section of the sealing layer 1026 along the radial direction is of a C-shaped structure with an opening facing the center of the wound gasket. Therefore, the elastic metal ring 102 of the inner ring forms a first reseal, wherein the annular elastic body 1022 provides a lasting supporting elastic force for the intermediate alloy coating layer 1024 all the time, when the sealing device works, the sealing layer 1026 and the flange 108 face are in contact deformation to form a line seal, and along with the rise of working pressure, a medium can penetrate through the annular elastic body 1022 to support the intermediate alloy coating layer 1024, so that the first reseal has a self-tightening sealing performance at the same time.
Further, the sealing layer 1026 may be an overwrap sealing layer or an electroplated sealing layer.
Further, the annular elastic body 1022 is an annular spring or a hollow elastic ring.
As shown in fig. 1 to 3, the circular-arc tooth skeleton ring 104 includes: an arc tooth framework 1042 and flexible nonmetal layers 1046 covering the upper and lower sides of the arc tooth framework 1042. The annular circular-arc teeth 1044 of the circular-arc tooth framework 1042 are bent towards the center of the wound gasket, and the plurality of annular circular-arc teeth 1044 are arranged at the upper side and the lower side along the radial direction of the circular-arc tooth framework 1042.
When the flange 108 and the annular circular-arc teeth 1044 are in contact, a circle of small cavity is formed between every two adjacent annular circular-arc teeth 1044, if in an extreme case, when a medium rushes through the elastic metal ring 102 and the sealing body 106, the medium can enter the small cavity, and a plurality of circular-arc teeth self-tightening seals can be formed by using the pressure of the medium, so that the risk of sealing failure is further reduced.
Further, the circular-arc tooth frame 1042 may be made of stainless steel, such as 304, 316L. The upper and lower circular arc teeth 1044 are symmetrical, and the distance between every two adjacent circular arc teeth 1044 is the same. 4-5 annular circular-arc teeth 1044 can be respectively arranged on the upper side and the lower side along the radial direction of the circular-arc tooth framework 1042. And multiple self-tightening seals are adopted, so that the sealing firmness is stronger.
Further, the flexible non-metal layer 1046 is a thin plate material layer made of one or more of graphite, mica, and non-asbestos, so that the sealing effect is further improved.
Further, the seal body 106 is spirally wound with a metal tape 1062 and a non-metal tape 1064. The non-metal tape 1064 is wound after resin impregnation treatment.
The non-metal strip 1064 in the sealing body 106 is wound after being impregnated with resin, so that air holes in the non-metal strip 1064 can be blocked, the occurrence of permeation and leakage is reduced, and the sealing performance is further improved.
Further, as shown in fig. 1 to 3, the cross section of the sealing body 106 in the radial direction thereof has a V-shaped configuration opened toward the center of the wound gasket.
It is also possible that the cross section of the sealing body 106 in its radial direction has a W-shaped configuration with the opening facing the center of the wound gasket.
The sealing body 106 has better compression and resilience performance due to the structural design.
Further, as shown in fig. 1 and 3, the thickness of the circular-arc tooth skeleton ring 104 is smaller than the thickness of the elastic metal ring 102 and the seal body 106.
After the upper and lower flanges 108 are tightened, the resilient metal ring 102 and the seal body 106, the circular arc toothed skeleton ring 104 are compressed to the same thickness.
The utility model provides a multiple sealing pattern combination of winding gasket, the line seal of existing inner circle elastic metal ring, the face seal mode have the arc tooth skeleton multiple-track sealing mode of outer lane again, and multiple sealing mode mutually supports, reduces the medium layer upon layer to the impact pressure of sealed face, forms the comprehensive sealing combination pattern of higher security level, has greatly reduced the risk of sealed inefficacy, has improved sealing performance.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (10)
1. A wound gasket, comprising: the sealing device comprises an elastic metal ring of an inner ring, an arc tooth skeleton ring of an outer ring and a sealing body arranged between the elastic metal ring of the inner ring and the arc tooth skeleton ring of the outer ring.
2. The wound gasket of claim 1 wherein said resilient metal ring comprises: the gasket comprises a circular ring-shaped elastomer, an intermediate alloy coating layer coated on the circular ring-shaped elastomer and a sealing layer coated on the intermediate alloy coating layer, wherein the cross section of the sealing layer along the radial direction is of a C-shaped structure with an opening facing the center of the wound gasket.
3. The wound gasket of claim 2,
the annular elastic body is an annular spring or a hollow elastic ring.
4. The wound gasket of claim 1 wherein said circular arc tooth skeletal ring comprises:
the circular arc tooth framework, the cyclic annular circular arc tooth of circular arc tooth framework to the center department of winding gasket is crooked, cyclic annular circular arc tooth is a plurality of and both sides from top to bottom along the radial arrangement of circular arc tooth framework.
5. The wound gasket of claim 4 wherein said circular arc tooth skeletal ring further comprises: and the flexible non-metal layers cover the upper side and the lower side of the circular arc tooth framework.
6. The wound gasket of claim 5, wherein said flexible non-metallic layer is a layer of sheet material comprising one or more of graphite, mica, and non-asbestos.
7. The wound gasket of claim 1,
the sealing body is formed by spirally winding a metal belt and a non-metal belt.
8. The wound gasket of claim 7,
and winding the non-metal belt after resin impregnation treatment.
9. The wound gasket of claim 8,
the cross section of the sealing body along the radial direction of the sealing body is of a V-shaped structure or a W-shaped structure, and the opening of the cross section faces to the center of the winding gasket.
10. The wound gasket of claim 1,
the thickness of the circular arc tooth framework ring is smaller than that of the elastic metal ring and that of the sealing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020989015.6U CN212407556U (en) | 2020-06-03 | 2020-06-03 | Winding gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020989015.6U CN212407556U (en) | 2020-06-03 | 2020-06-03 | Winding gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212407556U true CN212407556U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020989015.6U Active CN212407556U (en) | 2020-06-03 | 2020-06-03 | Winding gasket |
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| CN (1) | CN212407556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649133A (en) * | 2020-06-03 | 2020-09-11 | 滨州双峰石墨密封材料有限公司 | Winding gasket |
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2020
- 2020-06-03 CN CN202020989015.6U patent/CN212407556U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649133A (en) * | 2020-06-03 | 2020-09-11 | 滨州双峰石墨密封材料有限公司 | Winding gasket |
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