CN209524196U - A kind of sealing flange for pipelines and petrochemical pipelines connection - Google Patents
A kind of sealing flange for pipelines and petrochemical pipelines connection Download PDFInfo
- Publication number
- CN209524196U CN209524196U CN201920088223.6U CN201920088223U CN209524196U CN 209524196 U CN209524196 U CN 209524196U CN 201920088223 U CN201920088223 U CN 201920088223U CN 209524196 U CN209524196 U CN 209524196U
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- China
- Prior art keywords
- flange
- ring
- pipelines
- air bag
- annular
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Abstract
The utility model discloses a kind of sealing flanges for pipelines and petrochemical pipelines connection, including the first flange disk and second flange disk being fixed in two side ducts, the first flange disk and second flange disk have first annular slot and the second annular groove, the first annular slot and second annular groove constitute the annular seal groove for being located at first flange disk and second flange Pan Lianjiefengxichu, sealing ring and ring packing air bag are equipped in the annular seal groove, the ring packing air bag is disposed in proximity to the side of inner wall of the pipe；The ring packing air bag is connected with air inlet pipe, and described air inlet pipe one end connects the ring packing air bag, and the other end extends to ring flange side end face and is connected with self-closing air inlet.It is inflated by self-closing air inlet to ring packing inside air bag, so that ring packing air bag gradually fills, expands, sealing ring is squeezed, sealing ring is bonded with annular seal groove inner tight under extrusion, improves the leakproofness of flanged joint outward.
Description
Technical field
The utility model relates to seal for pipe joints technical field, specifically a kind of sealing flange for pipelines and petrochemical pipelines connection.
Background technique
For the pipelines and petrochemical pipelines of long distance transmission, often formed by the pipeline of several section conventional lengths by flanged joint,
The leakproofness of flange influences whole pipelines and petrochemical pipelines transmission performance.If flange seal is not good enough or use for a long time is easy to let out
Dew, can carry out wastage of material to the conveyer belt of petrochemical materials, pollute to pipelines and petrochemical pipelines surrounding enviroment, or even generate safety
Hidden danger.
Interference-fit type flange sealing structure has a good leakproofness, the definition of interference fit be hole size and and its
The difference of the size of the axis matched is negative, that is, refers to the cooperation with interference (being equal to zero including minimum interference), this sealing structure
It is used by many producers.But since the volume of the volume ratio seal groove of seal boss is big, the form of interference fit leads to flange
Assembling process is very difficult.
Utility model content
In view of the above-mentioned problems, the utility model discloses a kind of sealing flanges for pipelines and petrochemical pipelines connection.
A kind of sealing flange for pipelines and petrochemical pipelines connection, including the first flange disk being fixed in two side ducts and second
Ring flange, the first flange disk and second flange disk have first annular slot and the second annular groove, described first annular
Slot and second annular groove constitute the annular seal groove for being located at first flange disk and second flange Pan Lianjiefengxichu, institute
It states and is equipped with sealing ring and ring packing air bag in annular seal groove, the ring packing air bag is disposed in proximity to the one of inner wall of the pipe
Side；The ring packing air bag is connected with air inlet pipe, and described air inlet pipe one end connects the ring packing air bag, and the other end extends
To ring flange side end face and it is connected with self-closing air inlet.
Further, the cross section of the first annular slot and second annular groove is back-to-back L shape, the sealing
The cross section of circle is T shape, and the ring packing air bag is respectively arranged at the sealing ring and described first, second there are two setting
At the connection gap of ring flange.
Further, the ring packing balloon surface is equipped with thermal insulation layer, and the thermal insulation layer surface is coated with erosion resistant coating.
Further, the first annular slot and second annular groove are equipped with heat insulating mattress close to inner wall of the pipe side.
Further, the first flange disk and the second flange disk are solid by the radial multiple bolts being arranged at equal intervals
It is fixed, the first gasket and the second gasket are socketed on the bolt, first gasket and second gasket divide on opposite sides
It She You not tooth engaged and occlusal crib.
For having the beneficial effect that in the utility model before the assembly of the first, second ring flange is fixed, ring packing air bag is in pine
Relaxation state, so that sealing ring has certain activity space, it is solid convenient for grafting of the sealing ring between the first, second ring flange
It is fixed；After the first, second ring flange is fixed complete by the radial multiple bolts 13 being arranged at equal intervals, pass through self-closing air inlet
It is inflated to ring packing inside air bag, so that ring packing air bag gradually fills, expands outward, sealing ring is squeezed
Pressure, sealing ring are bonded with annular seal groove inner tight under extrusion, improve the leakproofness of flanged joint.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of multi-stage sealed flange inner annular seal groove；
Fig. 2 is the external connection schematic diagram of multi-stage sealed flange；
Fig. 3 is the internal structure cross-sectional view of multi-stage sealed flange；
Fig. 4 is enlarged drawing at the A in Fig. 3.
Specific embodiment
Below in conjunction in the drawings and specific embodiments, the technical solution of the utility model is clearly and completely retouched
It states, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.
It is a kind of for pipelines and petrochemical pipelines connection sealing flange, as shown in Figs 1-4, including be fixed in two side ducts first
Ring flange 1 and second flange disk 2, the first flange disk 1 and second flange disk 2 have first annular slot 3 and the second ring
Shape slot 4, the first annular slot and second annular groove constitute one and are located at first flange disk and second flange disk connecting sewing
Annular seal groove 5 at gap, the annular seal groove 5 is interior to be equipped with sealing ring 6 and ring packing air bag 7, the ring packing gas
Capsule 7 is disposed in proximity to the side of inner wall of the pipe；The ring packing air bag 7 is connected with air inlet pipe 8, and described 8 one end of air inlet pipe connects
The ring packing air bag 7 is connect, the other end extends to ring flange side end face and is connected with self-closing air inlet 9.
Before the assembly of first, second ring flange is fixed, ring packing air bag is in relaxed state, so that sealing ring has one
Fixed activity space, convenient for sealing ring being plugged and fixed between the first, second ring flange.When the first, second ring flange passes through
After the radial multiple bolts 13 being arranged at equal intervals are fixed completely, inflated by self-closing air inlet to ring packing inside air bag,
So that ring packing air bag gradually fills, expands, sealing ring is squeezed, sealing ring is close with annular under extrusion outward
The fitting of sealing groove inner tight, improves the leakproofness of flanged joint.Herein, air charging system works as pressure preferably with the inflator pump of pressure gauge
When the pressure value that power table is shown reaches setting value, that is, stop inflation.Self-closing air inlet can directly adopt the prior art, such as with
In the inflating port on bicycle tyre, details are not described herein.
As a kind of more optimized scheme, the cross section of the first annular slot 3 and second annular groove 4 is back-to-back
L shape, the cross section of the sealing ring 6 is T shape, and the ring packing air bag 7 is respectively arranged at the sealing ring there are two setting
At the connection gap of first, second ring flange, during ring packing air bag is full, can simultaneously to sealing ring into
The inside extruding of row parallelpiped and the outside extruding of vertical pipe, at the same time, its own is in the seam crossing for being easy leakage,
It can further prevent the generation of leakage.
Since the raw material of pipelines and petrochemical pipelines internal transmission may have certain temperature, to prevent high temperature from making ring packing
Air bag and sealing ring generate deformation, and 7 surface of ring packing air bag is equipped with thermal insulation layer 10, the first annular slot 3 and described
Second annular groove 4 is equipped with heat insulating mattress 12 close to inner wall of the pipe side.
To prevent a small amount of petrochemical material from penetrating into, corrode ring packing air bag, the thermal insulation layer surface is coated with erosion resistant coating 11.
The first gasket 14 and the second gasket 15, first gasket 14 and second gasket are socketed on the bolt 13
15 are respectively equipped with tooth engaged and occlusal crib on opposite sides, and tooth engaged and occlusal crib are mutually twisted, and prevent bolt, nut from loosening,
Improve the fixed compactness of bolt.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (5)
1. a kind of sealing flange for pipelines and petrochemical pipelines connection, including the first flange disk being fixed in two side ducts and the second method
Blue disk, it is characterised in that: the first flange disk and second flange disk have first annular slot and the second annular groove, described
First annular slot and second annular groove constitute the annular for being located at first flange disk and second flange Pan Lianjiefengxichu
Seal groove, the annular seal groove is interior to be equipped with sealing ring and ring packing air bag, and the ring packing air bag is disposed in proximity to pipe
The side of road inner wall；
The ring packing air bag is connected with air inlet pipe, and described air inlet pipe one end connects the ring packing air bag, and the other end prolongs
It extends to ring flange side end face and is connected with self-closing air inlet.
2. the sealing flange according to claim 1 for pipelines and petrochemical pipelines connection, it is characterised in that: the first annular slot
Cross section with second annular groove is back-to-back L shape, and the cross section of the sealing ring is T shape, the ring packing gas
There are two capsule is set, it is respectively arranged at the connection gap of the sealing ring and first, second ring flange.
3. the sealing flange according to claim 2 for pipelines and petrochemical pipelines connection, it is characterised in that: the ring packing gas
Capsule surface is equipped with thermal insulation layer, and the thermal insulation layer surface is coated with erosion resistant coating.
4. the sealing flange according to claim 3 for pipelines and petrochemical pipelines connection, it is characterised in that: the first annular slot
Heat insulating mattress is equipped with close to inner wall of the pipe side with second annular groove.
5. the sealing flange according to any one of claims 1-4 for pipelines and petrochemical pipelines connection, it is characterised in that: described
First flange disk and the second flange disk are fixed by the radial multiple bolts being arranged at equal intervals, and the is socketed on the bolt
One gasket and the second gasket, first gasket and second gasket are respectively equipped with tooth engaged and occlusal crib on opposite sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920088223.6U CN209524196U (en) | 2019-01-21 | 2019-01-21 | A kind of sealing flange for pipelines and petrochemical pipelines connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920088223.6U CN209524196U (en) | 2019-01-21 | 2019-01-21 | A kind of sealing flange for pipelines and petrochemical pipelines connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209524196U true CN209524196U (en) | 2019-10-22 |
Family
ID=68229293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920088223.6U Expired - Fee Related CN209524196U (en) | 2019-01-21 | 2019-01-21 | A kind of sealing flange for pipelines and petrochemical pipelines connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209524196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377689A (en) * | 2020-11-09 | 2021-02-19 | 江阴犇源精密零部件制造有限公司 | Novel loose flange |
-
2019
- 2019-01-21 CN CN201920088223.6U patent/CN209524196U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377689A (en) * | 2020-11-09 | 2021-02-19 | 江阴犇源精密零部件制造有限公司 | Novel loose flange |
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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: 20191022 Termination date: 20220121 |