CN217762048U - Metal sealing gasket used for sealing in gas environment - Google Patents
Metal sealing gasket used for sealing in gas environment Download PDFInfo
- Publication number
- CN217762048U CN217762048U CN202221024494.3U CN202221024494U CN217762048U CN 217762048 U CN217762048 U CN 217762048U CN 202221024494 U CN202221024494 U CN 202221024494U CN 217762048 U CN217762048 U CN 217762048U
- Authority
- CN
- China
- Prior art keywords
- sealing
- sealing ring
- gasket
- groove
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A metal sealing gasket for sealing in a gas environment comprises a gasket body, wherein a vent hole is formed in the middle of the gasket body, annular sealing grooves are formed in two sides of the gasket body, and the vent hole is overlapped with the central axis of each sealing groove; sealing devices are arranged at two ends of the gasket body; the sealing device comprises a sealing ring and a spring; the sealing ring is movably arranged in the sealing groove; a pressure area is formed between the bottom of the sealing ring and the bottom of the sealing groove; the springs are arranged in the pressure area; the top of the spring is connected with the bottom of the sealing ring, and the bottom of the spring is connected with the bottom of the sealing groove; an air pressure hole is formed in the side wall, close to the vent hole, of the sealing groove, one end of the air pressure hole is communicated with the pressure area, and the other end of the air pressure hole is communicated with the vent hole. By the method, air leakage caused by loosening of the flange can be prevented, and reliable sealing performance is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of the gasket, specifically be a gas environment metal sealing pad for it is sealed.
Background
The sealing gasket is used for preventing fluid or gas from leaking from the adjacent joint surfaces and preventing foreign matters such as dust, moisture and the like from entering parts inside the machine equipment. The gasket sets up between the flange face, presses seal gasket between the flange face through modes such as bolt for compensate the space between the flange face, thereby accomplish the leak protection.
The sealing effect of the existing sealing gasket depends on the tightness of the material and the joint of the sealing gasket and the flange, and the sealing gasket is mainly connected with the flange through bolts, so that the bolts are easy to loosen in long-term use, and the flange and the sealing gasket are loosened to generate the air leakage condition.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas environment metal sealing pad for it is sealed to provide the bolt in solving the background art and become loose easily in long-term the use, will lead to flange and seal gasket to produce not hard up, thereby take place the condition of gas leakage.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a metal sealing gasket for sealing in a gas environment comprises a gasket body, wherein a vent hole is formed in the middle of the gasket body, annular sealing grooves are formed in two sides of the gasket body, and the vent hole is overlapped with the central axis of each sealing groove;
sealing devices are arranged at two ends of the gasket body; the sealing device comprises a sealing ring and a spring; the sealing ring is movably arranged in the sealing groove; a pressure area is formed between the bottom of the sealing ring and the bottom of the sealing groove; the springs are arranged in the pressure area; the top of the spring is connected with the bottom of the sealing ring, and the bottom of the spring is connected with the bottom of the sealing groove;
an air pressure hole is formed in the side wall, close to the vent hole, of the sealing groove, one end of the air pressure hole is communicated with the pressure area, and the other end of the air pressure hole is communicated with the vent hole.
Furthermore, a plurality of connecting holes are formed in the position, close to the side edge, of the gasket body.
Furthermore, still be provided with supplementary sealing device on the gasket body, supplementary sealing device includes a plurality of elastic seal circle.
Further, the elastic sealing ring comprises a first elastic sealing ring and a second elastic sealing ring, wherein the first elastic sealing ring is arranged on the inner side of the sealing ring, and the second elastic sealing ring is arranged on the outer side of the sealing ring.
Furthermore, the first elastic sealing ring and the second elastic sealing ring are made of rubber materials.
Further, the height position of the air pressure hole should be higher than the height position of the bottom groove. The X position of the side wall of the bottom groove is provided with an outlet of the air pressure hole, and the distance between the X position and the bottom of the bottom groove is Hmm.
Further, the value range of H is [2,4].
Further, H is an integer, and the value of H is 2 or 3 or 4.
Further, the sealing ring is made of elastic materials.
Further, the gasket body is made of stainless steel.
Compared with the prior art, the utility model discloses following beneficial effect has:
the gasket comprises a gasket body, and is characterized in that a sealing groove is formed in the gasket body, a sealing ring is movably arranged in the sealing groove, a spring is further arranged at the bottom of the sealing ring, the top of the spring is connected with the bottom of the sealing ring, and the bottom of the spring is connected with the bottom of the sealing groove. After the gasket is installed, if the flange loosens and a gap appears, the spring can push out the sealing ring, so that the sealing ring can tightly abut against the flange surface, the gap between the flanges is compensated, the sealing between the flanges is realized, and the gas leakage is effectively prevented.
A pressure area is formed between the bottom of the sealing ring and the sealing groove, an air pressure hole is formed in the side wall, close to the vent hole, of the sealing groove, one end of the air pressure hole is communicated with the pressure area, and the other end of the air pressure hole is communicated with the vent hole. When space between the flange continues the increase, the sealing ring is also longer by the distance of ejecting, along with the sealing ring is by the distance of ejecting becomes long, the spring force also weakens gradually, when the sealing ring is by ejecting certain distance, the sealing ring lateral wall no longer blocks the atmospheric pressure hole, gas in the venthole enters into the pressure zone through the atmospheric pressure hole, make the atmospheric pressure in pressure zone supplemented to unanimously with the atmospheric pressure in the pipeline, receive the influence of atmospheric pressure and spring force, the sealing ring is sticis to the flange face on, thereby realized appearing not hard up at the flange and kept sealed, effectually prevented gas leakage, guaranteed the utility model discloses a reliability.
Drawings
Fig. 1 is an isometric view of the present invention;
fig. 2 is a schematic partial sectional view of the present invention.
The labels in the figure are: 101-gasket body, 102-connecting hole, 103-vent hole, 104-sealing ring, 105-second elastic sealing ring, 106-air pressure hole, 107-first elastic sealing ring, 108-spring, 109-pressure area.
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.
Examples
A metal sealing gasket for sealing in a gas environment comprises a gasket body 101, wherein a vent hole 103 is formed in the middle of the gasket body 101, annular sealing grooves are formed in two sides of the gasket body 101, and the vent hole 103 is overlapped with the central axis of each sealing groove; the vent hole 103 is overlapped with the central axis of the sealing groove; the design is convenient for the gasket to be positioned when being installed.
Sealing devices are arranged at two ends of the gasket body 101; the sealing device comprises a sealing ring 104 and a spring 108; the sealing ring 104 is movably arranged in the sealing groove; a pressure zone 109 is formed between the bottom of the sealing ring 104 and the bottom of the sealing groove; the springs 108 are provided in plurality, and the springs 108 are arranged in the pressure area 109; the top of the spring 108 is connected to the bottom of the seal ring 104 and the bottom of the spring 108 is connected to the bottom of the seal groove.
An air pressure hole 106 is formed in the side wall, close to the vent hole 103, of the sealing groove, one end of the air pressure hole 106 is communicated with the pressure area 109, and the other end of the air pressure hole 106 is communicated with the vent hole 103.
In the prior art, because the gas pressure in the pipeline is relatively high, if the flange loosens, a gap is formed between the flange and the sealing gasket, and gas leakage can be caused. The utility model discloses in the in-service use, sealed the pad and install between the flange, through behind the bolt-up flange, sealing ring 104 is pressed into in the seal groove. The bottom of the sealing ring 104 is urged upward by the force of the spring 108 and the top of the sealing ring 104 is held tightly against the flange face to seal against gas leakage.
When the bolts for fastening the flanges are loosened primarily, gaps between the flanges are increased, and at the moment, the sealing ring 104 extends outwards under the action of the force of the spring 108 and abuts against the flange surfaces, so that gaps between the flanges are compensated, and the sealing performance is ensured;
as the gap between the flanges continues to increase, the spring 108 force may not be sufficient to enable the seal ring 104 to press against the flange faces; at this time, since the sealing ring 104 moves upward by a certain distance, the pressure area 109 is communicated with the vent hole 103 through the air pressure hole 106, and the air pressure in the pressure area 109 is supplemented to be consistent with the air pressure in the pipeline; the sealing ring 104 is forced against the flange face by the gas pressure and the force of the spring 108, thereby continuing to maintain the seal. Through this kind of design, can compensate between the flange than great gap and can continue to keep sealed, effectually prevent gas leakage, make the utility model discloses can be applicable to in the various abominable environment, improve the utility model discloses a reliability.
In a preferred embodiment, the gasket body 101 is provided with a plurality of connection holes 102 near the side edges. The gasket body 101 is connected with the flange through bolts; the bolt connection is simple and convenient, and the nut can adopt a locknut to ensure that looseness is difficult to occur between the flanges.
In a preferred embodiment, the gasket body 101 is further provided with an auxiliary sealing device, and the auxiliary sealing device comprises a plurality of elastic sealing rings; when the gasket is pressed between the flanges, the life of the sealing ring 104 is reduced by only sealing the sealing ring 104, so that an elastic sealing ring is used in cooperation with the sealing ring, and the elastic sealing ring is used for keeping sealing when the flanges are not loosened.
In a preferred embodiment, the elastic sealing rings comprise a first elastic sealing ring 107 and a second elastic sealing ring 105, wherein the first elastic sealing ring 107 is arranged on the inner side of the sealing ring 104 and the second elastic sealing ring 105 is arranged on the outer side of the sealing ring 104. The first elastic sealing ring 107 is used for ensuring the sealing performance when the flange is not loosened; the second elastic sealing ring 105 is used for preventing external dust impurities or water from entering the middle part of the gasket, so that the sealing ring 104 and the spring 108 are effectively protected, and the aging time of the sealing ring 104 is prolonged.
In a preferred embodiment, the first elastic sealing ring 107 and the second elastic sealing ring 105 are made of rubber. The rubber material has certain elasticity and excellent sealing property.
In a preferred embodiment, the height of the gas pressure port should be higher than the height of the bottom slot. The X position of the side wall of the bottom groove is provided with an outlet of the air pressure hole, and the distance between the X position and the bottom of the bottom groove is Hmm. At the beginning of the flange loosening, the force of the spring 108 is enough to enable the sealing ring 104 to tightly abut against the flange surface to realize sealing; the spring 108 force may not be sufficient to seal the sealing ring 104 against the flange face only when the gap between the flanges increases, so that the sealing ring 104 is required to be sealed against the flange face by the air pressure in the pipe. I.e., the gap between the flanges exceeds H, the gas pressure in the pipe forces the sealing ring 104 against the flange face.
In a preferred embodiment, H is in the range of 2,4, and in practice it has been found that when spring 108 is stretched beyond 4mm, it is difficult for spring 108 to hold sealing ring 104 tightly against the flange face and gas leakage is likely to occur. Values are determined to be between 2mm and 4mm, including 2mm and 4mm.
In a preferred embodiment, H is an integer and has a value of 2 or 3 or 4. In order to facilitate the production of the rotary hole, H is an integer.
In a preferred embodiment, the sealing ring 104 is made of an elastic material, specifically, a rubber material, and the elastic material is used to ensure that the surface of the sealing ring 104 can be tightly attached to the flange surface, so as to ensure the sealing performance.
In a preferred embodiment, the gasket body 101 is made of stainless steel, which can ensure the service life of the present invention, and prevent the gasket from being aged and damaged due to rusting.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", 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 simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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 (10)
1. A metallic gasket for sealing a gas environment, characterized in that: the gasket comprises a gasket body (101), wherein a vent hole (103) is formed in the middle of the gasket body (101), annular sealing grooves are formed in two sides of the gasket body (101), and the vent hole (103) is overlapped with the central axis of each sealing groove;
sealing devices are arranged at two ends of the gasket body (101); the sealing device comprises a sealing ring (104) and a spring (108); the sealing ring (104) is movably arranged in the sealing groove; a pressure area (109) is formed between the bottom of the sealing ring (104) and the bottom of the sealing groove; a plurality of springs (108) are arranged, and the springs (108) are arranged in the pressure area (109); the top of the spring (108) is connected with the bottom of the sealing ring (104), and the bottom of the spring (108) is connected with the bottom of the sealing groove;
an air pressure hole (106) is formed in the side wall, close to the vent hole (103), of the sealing groove, one end of the air pressure hole (106) is communicated with the pressure area (109), and the other end of the air pressure hole (106) is communicated with the vent hole (103).
2. A gas-environment metal gasket for sealing according to claim 1, wherein: the gasket body (101) is provided with a plurality of connecting holes close to the side edge.
3. A gas-environment metal gasket for sealing according to claim 1, wherein: an auxiliary sealing device is further arranged on the gasket body (101) and comprises a plurality of elastic sealing rings.
4. A gas-environment metal gasket for sealing according to claim 3, wherein: the elastic sealing ring comprises a first elastic sealing ring (107) and a second elastic sealing ring (105), wherein the first elastic sealing ring (107) is arranged on the inner side of the sealing ring (104), and the second elastic sealing ring (105) is arranged on the outer side of the sealing ring (104).
5. A gas-environment metal gasket for sealing according to claim 4, characterized in that: the first elastic sealing ring (107) and the second elastic sealing ring (105) are made of rubber materials.
6. A gas environment metal gasket for sealing according to claim 1, wherein: the height position of the air pressure hole (106) is higher than that of the bottom groove; the X position of the side wall of the bottom groove is provided with an outlet of an air pressure hole (106), and the distance between the X position and the bottom of the bottom groove is Hmm.
7. A gas-environment metal gasket for sealing according to claim 6, wherein: the value range of H is [2,4].
8. A gas-environment metal gasket for sealing according to claim 7, wherein: h is an integer and has a value of 2, 3 or 4.
9. A gas-environment metal gasket for sealing according to claim 1, wherein: the sealing ring (104) is made of elastic material.
10. A gas environment metal gasket for sealing according to claim 1, wherein: the gasket body (101) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024494.3U CN217762048U (en) | 2022-04-29 | 2022-04-29 | Metal sealing gasket used for sealing in gas environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221024494.3U CN217762048U (en) | 2022-04-29 | 2022-04-29 | Metal sealing gasket used for sealing in gas environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217762048U true CN217762048U (en) | 2022-11-08 |
Family
ID=83884127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221024494.3U Active CN217762048U (en) | 2022-04-29 | 2022-04-29 | Metal sealing gasket used for sealing in gas environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217762048U (en) |
-
2022
- 2022-04-29 CN CN202221024494.3U patent/CN217762048U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202732952U (en) | Rubber sealing gasket | |
| CN217762048U (en) | Metal sealing gasket used for sealing in gas environment | |
| CN213177191U (en) | Hoop sealing structure for preventing leakage of flange | |
| CN219673586U (en) | Fire control pipeline connecting device | |
| CN216382634U (en) | Wear-resistant corrosion-resistant gate valve special for high-temperature viscous medium | |
| CN113431901B (en) | Metal ripple self-sealing composite gasket | |
| CN210949948U (en) | High-sealing elastic seat seal gate valve | |
| CN211039689U (en) | Improved low-pressure slurry valve structure | |
| CN210398028U (en) | Reliable flange sealing structure for heat exchanger unit pipeline | |
| CN209743574U (en) | Wave tooth composite gasket | |
| CN209998110U (en) | Connecting device for laminar cooling water pipeline of hot continuous rolling mill | |
| CN218762015U (en) | Semi-self-tightening metal composite flat gasket and flange | |
| CN211821195U (en) | Ash bucket flange | |
| CN210800380U (en) | Corner-replaceable conveying bent pipe | |
| CN217714026U (en) | Oil pipe flange of ultrahigh pressure hydraulic system | |
| CN218440620U (en) | Gasket with good sealing effect | |
| CN212407880U (en) | Anti-skid wear-resistant welding neck flange | |
| CN216279245U (en) | High-sealing combined oil seal of ball screw pair | |
| CN219796125U (en) | Butterfly valve with good sealing performance for transformer | |
| CN220060707U (en) | Anti-leakage stop valve | |
| CN219242748U (en) | Novel dirt guiding and draining sealing valve | |
| CN216715500U (en) | Fire-fighting pipeline mounting structure | |
| CN211176285U (en) | Sealing assembly for drainage device | |
| CN212509946U (en) | Sealing structure of flange | |
| CN216112294U (en) | Vacuum ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |