CN216692590U - High-pressure sealing flange - Google Patents
High-pressure sealing flange Download PDFInfo
- Publication number
- CN216692590U CN216692590U CN202220372688.6U CN202220372688U CN216692590U CN 216692590 U CN216692590 U CN 216692590U CN 202220372688 U CN202220372688 U CN 202220372688U CN 216692590 U CN216692590 U CN 216692590U
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- Prior art keywords
- flange
- pipeline
- air
- pressure sealing
- hole
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- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model discloses a high-pressure sealing flange, which is characterized by comprising a positive flange and a negative flange which are matched with each other, wherein through holes are formed in the centers of the positive flange and the negative flange, a sealing air bag is arranged on the end surface of the positive flange, a sealing groove matched with the sealing air bag is formed in the end surface of the negative flange, an air inlet pipeline and an air outlet pipeline are further arranged in the positive flange, the air inlet pipeline and the air outlet pipeline are communicated with the sealing air bag and the through holes, a one-way plate for sealing the air inlet pipeline is arranged at the communication part of the air inlet pipeline and the through holes, an opening and closing mechanism is further arranged on the one-way plate, and an arc-shaped pipeline structure is arranged at the communication part of the air outlet pipeline and the through holes.
Description
Technical Field
The utility model relates to the technical field of flanges, in particular to a high-pressure sealing flange.
Background
The flange is also called flange disc or flange, and the flange is a part for connecting the shaft and is used for connecting pipe ends; there are also flanges at the inlet and outlet of the equipment for the connection between two equipments, such as reducer flanges, flange connections or flange joints, which means a detachable connection that is a set of combined sealing structures by the interconnection of flanges, gaskets and bolts, the pipe flange means a flange for piping in a piping installation, the flange is used at the inlet and outlet of the equipment, there are holes on the flange, and the bolts tightly connect the two flanges. The flanges are sealed by gaskets, the flanges are used in pairs, and the sealing gaskets are added between the two flanges and then fastened by bolts.
The existing flange has some problems when used for high-pressure gas pipelines: the high pressure that has instantaneous production in high-pressure line promptly, if can not in time the pressure release in the junction of flange this moment, appear flange joint not hard up problem easily, reduce the connection reliability to the high pressure that produces in the moment can strike the sealed department of flange, the problem of high-pressure gas leakage appears easily.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a high-pressure sealing flange which is provided with a sealing air bag for secondary sealing to enhance the sealing performance, and meanwhile, the air bag can also store instantaneous high-pressure gas to realize the pressure relief function and expand the volume to enhance the sealing performance.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high-pressure sealing flange, is including the positive flange and the negative flange of mutually supporting, the center of positive flange and negative flange all is provided with through-hole, its characterized in that: be provided with sealed gasbag on the terminal surface of positive flange, be provided with on the terminal surface of negative flange with sealed gasbag matched with sealed recess, the inside of positive flange still is provided with admission line and pipeline of giving vent to anger, admission line and pipeline of giving vent to anger all communicate sealed gasbag and through-hole, the intercommunication department of admission line and through-hole is provided with the one-way board that seals the admission line, still be provided with operating mechanism on the one-way board, it is used for controlling opening and closing of one-way board, the intercommunication department of pipeline and through-hole of giving vent to anger is provided with arc pipeline structure.
The utility model is further configured to: the opening and closing mechanism comprises a sliding cavity and a spring, the one-way plate can slide in the sliding cavity, and the spring abuts between the one-way plate and the inner wall of the sliding cavity.
The utility model is further configured to: one side of the one-way plate facing the through hole is provided with an inclined plane.
The utility model is further configured to: the cross-section of the arc pipeline structure is of an arch structure, the two ends of the pipeline are communicated with the through hole, the air outlet pipeline is connected into the arc pipeline along the vertical tangential direction, and a conical opening is formed in the connecting position.
The utility model is further configured to: and a sealing ring is also convexly arranged on the end surface of the positive flange.
The utility model is further configured to: and a plurality of bolt holes are formed in the positive flange and the negative flange.
The utility model is further configured to: the inner diameter of the air inlet pipeline is larger than that of the air outlet pipeline.
The utility model is further configured to: the sealed air bag is made of rubber materials, is hollow inside and can be used for storing gas.
In conclusion, the utility model has the following beneficial effects:
compared with the prior art, the utility model is provided with the sealing air bag, the air inlet pipeline and the air outlet pipeline which are communicated with the sealing air bag and the through hole, the unidirectional plate which is opened in a unidirectional way is arranged at the joint of the air inlet pipeline and the through hole, the opening and closing mechanism is used for controlling the opening and closing of the unidirectional plate, under the normal condition, the opening and closing mechanism is used for closing the unidirectional plate to prevent the air in the working pipeline from entering the air inlet pipeline, when instantaneous high-pressure air is generated in the working pipeline, the air pressure is increased, the air generates force for pushing the unidirectional plate to open through the inclined surface on the unidirectional plate, when the force for pushing the unidirectional plate is larger than the elastic force of a spring in the opening and closing mechanism, the unidirectional plate is pushed by the air, the air enters the air inlet pipeline and enters the sealing air bag along the air inlet pipeline, a part of the air is shunted through the air inlet pipeline, the pressure relief function is realized, the problem that the instantaneous high-pressure air cannot be relieved in time at the flange in the prior art is solved, leading to a problem of loosening of the flange connection.
Simultaneously, gaseous entering makes sealed gasbag take place the inflation in the sealed gasbag, and the volume grow for cooperation between sealed gasbag and the sealed recess is inseparabler, has strengthened sealed effect, has solved among the prior art instantaneous high pressure and has strikeed sealed department, leads to gaseous problem that takes place to leak.
When the instantaneous high pressure in the working pipeline disappears, the gas in the sealed air bag flows back to the working pipeline from the gas outlet pipeline, and the arc pipeline structure arranged at the gas outlet pipeline can prevent the gas in the working pipeline from reversely flowing into the sealed air bag.
Drawings
FIG. 1 is a schematic view of the external structure of the flange according to the present embodiment;
FIG. 2 is a schematic view showing the internal structure of the positive and negative flanges of the present embodiment;
FIG. 3 is an enlarged view of FIG. 2A in a normal state of the present embodiment;
FIG. 4 is an enlarged view of FIG. 2A in a transient high-pressure state;
FIG. 5 is a schematic view showing the internal structure of the airbag according to the embodiment.
Reference numerals: 1. a positive flange; 2. a negative flange; 3. a through hole; 4. sealing the air bag; 401. sealing the groove; 5. a seal ring; 6. an air intake duct; 7. an air outlet pipe; 8. a one-way plate; 9. an opening and closing mechanism; 901. a sliding cavity; 902. a spring; 10. an arc-shaped pipeline structure; 11. a tapered mouth; 12. bolt holes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment discloses a high-pressure sealing flange, as shown in fig. 1 and fig. 2, which comprises a positive flange 1 and a negative flange 2 which are matched with each other, wherein through holes 3 are formed in the centers of the positive flange 1 and the negative flange 2, a sealing air bag 4 is arranged on the end surface of the positive flange 1, a sealing groove 401 which is matched with the sealing air bag 4 is arranged on the end surface of the negative flange 2, and a sealing ring 5 is also arranged on the end surface of the positive flange 1, so that when the positive flange and the negative flange are installed, the sealing ring 5 is tightly attached to the end surface of the negative flange, the sealing air bag 4 is tightly attached to the sealing groove 401, and the sealing performance is effectively improved by double-layer sealing measures; an air inlet pipeline 6 and an air outlet pipeline 7 are further arranged inside the front flange 1, the air inlet pipeline 6 and the air outlet pipeline 7 are both communicated with the sealed air bag 4 and the through hole 3, and referring to fig. 5, the sealed air bag 4 is hollow inside and can store air; the communicating part of the air inlet pipeline 6 and the through hole 3 is provided with a one-way plate 8 for sealing the air inlet pipeline 6, the one-way plate 8 is further provided with an opening and closing mechanism 9 for controlling the opening and closing of the one-way plate 8, and the communicating part of the air outlet pipeline 7 and the through hole 3 is provided with an arc pipeline structure 10.
Further, referring to fig. 3 and 4, the internal structure is described, wherein the opening and closing mechanism 9 includes a sliding cavity 901 and a spring 902, the one-way plate 8 can slide in the sliding cavity 901, the spring 902 abuts between the one-way plate 8 and the inner wall of the sliding cavity 901, in a normal use situation, for example, fig. 3, an arrow in the figure indicates a moving direction of an air flow in the normal use situation, when the air in the working pipe passes through the through hole of the flange, the pressure generated by the air pressure on the side wall cannot push the one-way plate 8 away, the air cannot enter, when the air flows through the arc-shaped pipe structure 10, the air flows along the inner wall of the arc-shaped pipe structure 10 due to the viscosity of the air, and the tapered opening 11 is provided, so that the air is difficult to enter the sealed air bag 4 from the air outlet pipe 7, and even if a small amount of air enters, the air returns to the through hole 3 again, and does not affect the normal use of the flange. When instantaneous high pressure is generated in the working pipeline, for example, fig. 4, an arrow in the figure indicates the moving direction of the air flow in the instantaneous high pressure state, the air pressure in the through hole 3 rises, the pressure acts on the inclined surface of the one-way plate 8, part of the pressure is the force for transversely pushing the one-way plate 8, when the force is greater than the elastic force of the spring 902, the one-way plate 8 is pushed away, the high-pressure air enters the air inlet pipeline 6 and finally enters the sealed air bag 4, at the moment, the air in the sealed air bag 4 flows out from the air outlet pipeline 7, but because the inner diameter of the air inlet pipeline 6 is greater than the air outlet pipeline 7, the air pressure in the through hole 3 is higher than the air pressure flowing out from the sealed air bag 4, the air inlet amount is greater than the air outlet amount, the sealed air bag 4 expands, the sealing performance is improved, and the flange can still keep sealing in the instantaneous high pressure state; when the instantaneous high pressure is over, the one-way plate 8 is pushed back by the spring 902, the air inlet pipeline 6 is closed, the air in the sealed air bag 4 is not introduced any more, and the air stored in the sealed air bag is gradually discharged through the air outlet pipeline 7 and the arc-shaped pipeline structure 10, and the normal use state is returned again.
To sum up, this embodiment is when facing the instantaneous high pressure condition, with high-pressure gas reposition of redundant personnel entering sealed gasbag 4, realizes the pressure release function to sealed effect is strengthened to 4 bloations back of sealed gasbag, with the impact of reply high-pressure gas to sealed department, kills two birds with one stone, can protect the connection of flange firm, can also strengthen sealedly, prevents high-pressure gas leakage, and simple structure uses reliably.
The utility model is not limited to the above preferred embodiments, but should be construed to cover all modifications, equivalents, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. The utility model provides a high-pressure sealing flange, is including positive flange (1) and negative flange (2) of mutually supporting, the center of positive flange (1) and negative flange (2) all is provided with through-hole (3), its characterized in that: be provided with sealed gasbag (4) on the terminal surface of positive flange (1), be provided with on the terminal surface of negative flange (2) with sealed gasbag (4) matched with sealed recess (401), the inside of positive flange (1) still is provided with admission line (6) and pipeline (7) of giving vent to anger, admission line (6) all communicate sealed gasbag (4) and through-hole (3) with pipeline (7) of giving vent to anger, the intercommunication department of admission line (6) and through-hole (3) is provided with one-way board (8) of sealing admission line (6), still be provided with on one-way board (8) and open and close mechanism (9), it is used for controlling opening and closing of one-way board (8), the intercommunication department of pipeline (7) and through-hole (3) of giving vent to anger is provided with arc pipeline structure (10).
2. A high pressure sealing flange according to claim 1, wherein: the opening and closing mechanism (9) comprises a sliding cavity (901) and a spring (902), the one-way plate (8) can slide in the sliding cavity (901), and the spring (902) abuts between the one-way plate (8) and the inner wall of the sliding cavity (901).
3. A high pressure sealing flange according to claim 1, wherein: one side of the one-way plate (8) facing the through hole (3) is provided with an inclined plane.
4. A high pressure sealing flange according to claim 1, wherein: the cross-section of arc pipeline structure (10) is domes, and its pipeline both ends all communicate with through-hole (3), pipeline (7) of giving vent to anger insert arc pipeline structure (10) along perpendicular tangential direction to be provided with bell mouth (11) in the department of inserting.
5. A high pressure sealing flange according to claim 1, wherein: and a sealing ring (5) is also convexly arranged on the end surface of the positive flange (1).
6. A high pressure sealing flange according to claim 1, wherein: the positive flange (1) and the negative flange (2) are both provided with a plurality of bolt holes (12).
7. A high pressure sealing flange according to claim 1, wherein: the inner diameter of the air inlet pipeline (6) is larger than that of the air outlet pipeline (7).
8. A high pressure sealing flange according to claim 1, wherein: the sealed air bag (4) is made of rubber materials, is hollow inside and can be used for storing gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220372688.6U CN216692590U (en) | 2022-02-23 | 2022-02-23 | High-pressure sealing flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220372688.6U CN216692590U (en) | 2022-02-23 | 2022-02-23 | High-pressure sealing flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216692590U true CN216692590U (en) | 2022-06-07 |
Family
ID=81829017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220372688.6U Expired - Fee Related CN216692590U (en) | 2022-02-23 | 2022-02-23 | High-pressure sealing flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216692590U (en) |
-
2022
- 2022-02-23 CN CN202220372688.6U patent/CN216692590U/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 |
Granted publication date: 20220607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |