CN211901968U - Connecting flange for high-pressure air pipe - Google Patents
Connecting flange for high-pressure air pipe Download PDFInfo
- Publication number
- CN211901968U CN211901968U CN202020321448.4U CN202020321448U CN211901968U CN 211901968 U CN211901968 U CN 211901968U CN 202020321448 U CN202020321448 U CN 202020321448U CN 211901968 U CN211901968 U CN 211901968U
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- flange
- sealing ring
- sealing
- sealed
- annular
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Abstract
The utility model belongs to the technical field of the flange seal, specifically disclose a flange for high-pressurepipe, including a pair of flange soldered connection and the activity trial flange clamp of installing on the flange soldered connection, the bolt mounting hole has on the flange clamp, flange soldered connection's terminal surface is opened there is trapezoidal sealed annular, is equipped with in it with its matched with sealing ring, the width of sealing ring slightly is greater than the twice of sealing ring groove depth degree, under the effect that receives the pretension, the external seal face and the interior seal face of sealing ring closely paste with sealed annular, have formed twice sealed protection, the utility model has the advantages of easy operation, sealed effectual.
Description
Technical Field
The utility model belongs to the technical field of the flange is sealed, concretely relates to a flange for high-pressure air pipe.
Background
Flanges are parts that interconnect pipes to pipes and to valves, and are attached to the ends of the pipes. The flange connection is a detachable connection which is formed by connecting a flange, a gasket and a bolt with each other to form a combined sealing structure, wherein the flange is provided with a hole, and the bolt tightly connects the two flanges. The flanges are sealed with gaskets.
The flange sealing mainly makes the gasket generate plastic deformation through the fastening of the bolts, so that the tiny uneven surfaces of the boss surface are filled up, and the sealing effect is achieved. However, in the field practical use process, the leakage phenomenon of the high-pressure flange during the pressing often occurs, the leakage phenomenon mainly refers to interface leakage, namely the leakage of the sealing at the contact part of the sealing and the boss working surface, and the sealing gasket of the common high-pressure flange needs to be replaced after the common high-pressure flange is used for one to two years.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be: the contact part of the seal and the boss working surface is easy to leak, and the connecting flange for the high-pressure air pipe has a simple structure and good leakage prevention effect.
The utility model discloses a following technical scheme realizes, a flange for high-pressurepipe, including a pair of flange soldered connection and the activity of installing on the flange soldered connection tries the flange clamp, the bolt mounting hole has on the flange clamp, the end face of flange soldered connection is opened there is sealed annular, sealed annular cross-section is outer big-end-up trapezoidal, is equipped with in it with its matched with sealing ring, the width of sealing ring slightly is greater than the twice of sealing ring groove degree of depth, under the effect that receives the pretension, the external seal face and the interior seal face and the sealed annular of sealing ring tightly paste mutually, have formed the sealed protection of twice.
Furthermore, in order to enhance the sealing effect, the sealing ring is made of metal sealing materials and is provided with an outer sealing surface and an inner sealing surface, the outer sealing surface is a spherical surface, the inner sealing surface is symmetrical to the outer sealing surface on the cross section, the inner sealing surface and the outer sealing surface are spherical surfaces and are in contact with the conical surface of the sealing ring groove, the initial state is a loop line, under the action of pretightening force, the sealing ring generates plastic deformation at the contact position, the loop line is changed into a loop belt, the sealing performance is improved, and the sealing ring is easy to center because the contact surface is naturally formed by the spherical surfaces and the inclined.
Further, the sealing ring is integrally formed, and the material comprises one of the following types: 20. 1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 0Cr17Mn13Mo2N, 00Cr17Ni14Mo2, TA3 and TC 4.
Further, in order to further enhance the sealing effect, a circle of rectangular ring groove is arranged in the sealing ring groove, the width of the rectangular ring groove is slightly smaller than the height of the rectangular ring groove, and an O-shaped sealing ring is arranged in the rectangular ring groove.
Further, the diameter of the O-shaped sealing ring is smaller than five filaments of the height of the rectangular ring groove.
The utility model has the advantages that:
1. the utility model discloses be equipped with the cross-section and be the sealed annular of rectangle and think the complex sealing ring with sealed annular, under the effect that receives the pretension, the external seal face and the interior sealing face of sealing ring closely paste mutually with sealed annular, have formed twice sealed protection, and the protecting effect is better.
2. The utility model discloses the interior external seal face of well sealing ring is the sphere, contacts with the conical surface of sealed annular, and initial condition is a loop, and under the pretightning force effect, the sealing ring produces plastic deformation in contact department, and the loop becomes the clitellum, and sealing performance has obtained the promotion.
3. The utility model discloses a sealing contact surface is formed by sphere and inclined plane nature, and the easy centering of sealing ring, easy to assemble.
4. The utility model discloses round rectangle annular in addition in sealed annular to wherein still be equipped with an O shape sealing washer, under the pretightning force effect, the top and the contact of O shape sealing washer and extrusion of sealing ring produce elastic deformation, have increased one sealing protection again in the middle of outer seal face and interior seal face.
Drawings
Fig. 1 is an assembly view of a connection flange for a high pressure gas pipe according to the present invention;
fig. 2 is an exploded view of a flange for a high-pressure gas pipe according to the present invention.
In the figure: 1, welding a flange and a butt joint; 11, sealing the ring groove; 12 rectangular ring grooves; 2, clamping a flange; 21 bolt mounting holes; 3, sealing rings; 31 an outer sealing surface; 32 an inner sealing surface; 4O-shaped sealing rings.
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. 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.
As shown in fig. 1-2, a connecting flange for high-pressure gas pipes comprises a pair of flange welding joints 1 and a movable flange clamp 2 installed on the flange welding joints 1, wherein the flange clamp 2 is provided with bolt installation holes 21, the end surface of the flange welding joints 1 is provided with a sealing ring groove 11, the section of the sealing ring groove 11 is in a trapezoid shape with a large outside and a small inside, a sealing ring 3 matched with the sealing ring groove is arranged in the sealing ring groove 11, the width of the sealing ring 3 is slightly larger than twice the depth of the sealing ring groove 11, and an outer sealing surface 31 and an inner sealing surface 32 of the sealing ring 3 are tightly attached to the sealing ring groove under the action of a pre-tightening force, so that two sealing protections are.
In practical application, in order to enhance the sealing effect, the sealing ring 3 is made of a metal sealing material and is provided with an outer sealing surface 31 and an inner sealing surface 32, the outer sealing surface 31 is a spherical surface, the inner sealing surface 32 is symmetrical to the outer sealing surface 31 in cross section, and the inner sealing surface 31 and the outer sealing surface 31 are formed; the 32 is a spherical surface, and contacts with the conical surface of the sealing ring groove 11, the initial state is a loop line, under the action of pretightening force, the sealing ring 3 generates plastic deformation at the contact part, the loop line becomes a loop belt, the sealing performance is improved, and the sealing ring is easy to center because the contact surface is naturally formed by the spherical surface and the inclined surface.
In practical application, the sealing ring 3 is integrally formed, and the material includes one of the following types: 20. 1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 0Cr17Mn13Mo2N, 00Cr17Ni14Mo2, TA3 and TC 4.
In practical application, in order to further enhance the sealing effect, a circle of rectangular ring groove 12 is further arranged in the sealing ring groove 11, the width of the rectangular ring groove 12 is slightly smaller than the height, and an O-shaped sealing ring 4 is further arranged in the rectangular ring groove 12.
In practical application, the diameter of the O-shaped sealing ring 4 is less than five filaments of the height of the rectangular ring groove 12.
The utility model discloses a theory of operation:
the flange jacket 2 is arranged on the flange welding head 1, the high-pressure air pipe is welded with one end of the flange welding head 1, the matched sealing ring 3 is arranged in the trapezoidal sealing ring groove 11, the sealing ring is tightened by bolts and nuts, and the outer sealing surface 31 and the inner sealing surface 32 of the sealing ring 3 are tightly attached to the sealing ring groove 11, so that two sealing protections are formed.
In one embodiment, the inner and outer sealing surfaces of the sealing ring 3 are spherical surfaces, and are in contact with the conical surface of the sealing ring groove 11, the initial state is a loop, and under the action of pretightening force, the sealing ring generates plastic deformation at the contact part, and the loop is changed into a ring belt, so that the sealing performance is improved.
In one embodiment, the sealing ring groove 11 further has a circle of rectangular ring groove 12, and an O-ring 4 is further disposed therein, under the pre-tightening force, the top end of the sealing ring 3 contacts and presses the O-ring 4 to generate elastic deformation, and a sealing protection is further added between the outer sealing surface 31 and the inner sealing surface 32.
To sum up, the utility model discloses a cooperation of sealing ring and sealed annular forms the multiple seal, has easy operation, sealed effectual advantage.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.
Claims (5)
1. A flange for a high-pressure gas pipe, characterized in that: including a pair of flange soldered connection (1) and install activity trial flange clamp (2) on flange soldered connection (1), bolt mounting hole (21) have on flange clamp (2), the terminal surface of flange soldered connection (1) is opened has sealed annular (11), sealed annular (11) cross-section is outer big-end-up trapezoidal, is equipped with in it with its matched with sealing ring (3), the width of sealing ring (3) slightly is greater than the twice of sealed annular (11) degree of depth.
2. A connecting flange for a high pressure gas pipe according to claim 1, wherein: the sealing ring (3) is made of metal sealing materials and is provided with an outer sealing surface (31) and an inner sealing surface (32), the outer sealing surface (31) is a spherical surface, and the inner sealing surface (32) is symmetrical to the outer sealing surface (31) in cross section.
3. A connecting flange for a high pressure gas pipe according to claim 2, wherein: the sealing ring (3) is integrally formed and made of one of the following types: 20. 1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 0Cr17Mn13Mo2N, 00Cr17Ni14Mo2, TA3 and TC 4.
4. A connecting flange for a high pressure gas pipe according to claim 1, wherein: still have round rectangle annular (12) in sealed annular (11), the width of rectangle annular (12) slightly is less than the height, still be equipped with one O shape sealing washer (4) in rectangle annular (12).
5. A connecting flange for a high pressure gas pipe according to claim 4, wherein: the diameter of the O-shaped sealing ring (4) is less than five threads of the height of the rectangular ring groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020321448.4U CN211901968U (en) | 2020-03-15 | 2020-03-15 | Connecting flange for high-pressure air pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020321448.4U CN211901968U (en) | 2020-03-15 | 2020-03-15 | Connecting flange for high-pressure air pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211901968U true CN211901968U (en) | 2020-11-10 |
Family
ID=73323344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020321448.4U Expired - Fee Related CN211901968U (en) | 2020-03-15 | 2020-03-15 | Connecting flange for high-pressure air pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211901968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292590A (en) * | 2021-05-21 | 2021-08-24 | 江西国化实业有限公司 | Separation device for preparing trimethylsilyl trifluoromethanesulfonate and using method |
-
2020
- 2020-03-15 CN CN202020321448.4U patent/CN211901968U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292590A (en) * | 2021-05-21 | 2021-08-24 | 江西国化实业有限公司 | Separation device for preparing trimethylsilyl trifluoromethanesulfonate and using method |
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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: 20201110 |