CN218671034U - Flexible self-sealing rubber sealing ring and sealing structure - Google Patents
Flexible self-sealing rubber sealing ring and sealing structure Download PDFInfo
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- CN218671034U CN218671034U CN202223228423.8U CN202223228423U CN218671034U CN 218671034 U CN218671034 U CN 218671034U CN 202223228423 U CN202223228423 U CN 202223228423U CN 218671034 U CN218671034 U CN 218671034U
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- expansion groove
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- 238000007789 sealing Methods 0.000 title claims abstract description 100
- 239000013013 elastic material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 13
- 230000032683 aging Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 17
- 230000035882 stress Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to the technical field of joint installation of pipelines, in particular to a connecting, sealing and installing technology of medium-high pressure water and liquid pipelines. The flange joint high-pressure seal that centering high-pressure line generally adopted is poor, the installation is troublesome, easy ageing, the utility model discloses a rubber ring main part, its characterized in that: an expansion groove is formed in the inner wall of the rubber ring main body in a surrounding mode, and an opening of the expansion groove faces to the center of the rubber ring main body. After the medium reaches the flexible self-sealing rubber ring, the opening of the expansion groove faces to the center of the flexible self-sealing rubber ring, namely, gas or liquid pressure preferentially enters the expansion groove, the expansion wall is elastically connected with the rubber ring main body, the pressure in the expansion groove is high, and the expansion wall is opened towards two sides, so that the expansion groove is tightly attached to the pipeline walls at two sides of the pipeline joint, and the expansion sealing at the position is realized. The self-adaptation nature is strong, but high-pressure seal, and installation convenient to use, long service life.
Description
Technical Field
The invention relates to the technical field of joint installation of pipelines, in particular to a connecting, sealing and installing technology of medium-high pressure water and liquid pipelines.
Background
In the connection and sealing of medium and high pressure pipelines, flange connection, clamp connection and the like are relatively common connection types. And the sealing member is basically a rubber gasket, a wound gasket, a metal ring gasket, an O-ring, etc. The flange connection structure is mature, the type is simple, and the flange connection structure is widely applied to medium and low pressure pipelines. However, it has the following disadvantages:
1) The high-pressure sealing performance is poor. The highest applicable pressure of flange connection is 40Mpa, and the applicable pressure according to different sealing types and pipe diameters is smaller. When a certain pressure is exceeded, the sealing performance is poor, and phenomena such as water seepage, water leakage, gasket breakage, displacement and the like are easy to occur. Seriously affecting the sealing and safety of the pipeline.
2) The pre-tightening time is long, and the installation efficiency is low. When the flange is connected, in order to ensure the sealing effect, certain compression and pretightening force must be required to be carried out on the sealing element. Therefore, during installation, it is required that a certain prestress must be applied to the bolt. A plurality of bolts need to be pre-tightened repeatedly back and forth in the installation process, and the efficiency is low.
3) The environment adaptability is poor, the cold and hot strain is not resisted, and secondary fastening is needed. During flange connection, in order to guarantee the sealing effect, certain compression and pretightening force are carried out on the bolts. The bolt has thermal deformation/stress when the temperature of the use environment changes. The installation in summer generally needs to be carried out the secondary fastening in the autumn and winter; in winter, the bolt may be damaged due to excessive pretightening force.
4) The gasket is susceptible to aging damage. When the flange is connected, in order to ensure the sealing effect, the sealing gasket is compressed and pre-tightened to a certain degree. And when the temperature changes, certain elastic damage also exists, and the sealing effect is greatly reduced after the elastic damage. Due to the dual functions of pressure and temperature, the sealing gasket is easy to age, the elasticity is reduced, and the sealing effect is poor.
Disclosure of Invention
The utility model aims to solve the technical problem that: overcomes the defects of the prior art, and provides a flexible self-sealing rubber ring and a sealing structure which have high installation efficiency, high bearing pressure, reliable sealing, difficult damage and no need of secondary fastening.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a flexible self-sealing rubber ring, includes the rubber ring main part, its characterized in that: an expansion groove is formed in the inner wall of the rubber ring main body in a surrounding mode, and an opening of the expansion groove faces to the center of the rubber ring main body.
The sealing principle of the sealing rubber ring is as follows: if pressure leakage occurs at the sealed joint, gas or liquid leaked from the joint moves from the pipe cavity to the flexible self-sealing rubber ring along the joint of the leakage part and reaches the flexible self-sealing rubber ring, and the opening of the expansion groove faces the center of the flexible self-sealing rubber ring, namely, gas or liquid pressure preferentially enters the expansion groove, the expansion wall is elastically connected with the rubber ring main body, the pressure in the expansion groove is large, and the expansion wall is opened towards two sides, so that the pipeline walls on two sides of the pipeline joint are tightly attached, and the expansion sealing of the joint is realized. The larger the leakage pressure is, the tighter the expansion wall is attached to the inner wall of the pipe joint, and the better the sealing effect is.
The expansion groove can be a plurality of blank spaces towards the center of the rubber ring main body; the expansion tank can also be provided in plurality parallel to each other. The effect of expanding and sealing under pressure can be achieved.
Preferably, the expansion groove is arranged around the inner wall of the rubber ring main body.
The expansion direction of the expansion groove arranged in parallel around the inner wall is controllable, the expansion wall expands and compresses the inner walls of the two pipe joints uniformly, and the sealing effect is better.
Preferably, the width of the expansion groove gradually widens from inside to outside.
When the expansion tank is extruded by compressed air, the two sides of the expansion tank move outwards more easily, and the connection strength between the two sides of the expansion tank and the rubber ring main body can be ensured
Preferably, the bottom of the expansion groove is in the shape of a circular arc with a concave middle part. Stress concentration can be effectively eliminated.
Preferably, the rubber ring main body is made of elastic materials.
The elastomeric rubber ring body also provides a degree of deformation sealing capability.
A sealing structure, characterized in that: including setting up sealed rubber ring and the clamp subassembly between the joint of two adjacent pipelines, sealed rubber ring be above the flexibility seal rubber ring from closely, the expansion tank encircles the seam setting of pipe joint to just right with the seam.
The clamp type pipe joint has the advantages of quick, simple, safe, reliable and economical installation, no electric welding, no pollution and the like. However, the clamp pipe joint cannot be used for connecting medium and high pressure pipelines generally, because the clamp pipe joint lacks axial extrusion force on two pipelines, and cannot extrude a sealing rubber ring in the joint well to realize sealing, an axial extrusion sealing mode such as a flange is needed for fixing the medium and high pressure pipeline joint, and further, a complex installation mode in the background art is needed for balancing the axial pressure at the joint. According to the invention, the clamp type pipe connector can be applied to sealing of medium and high pressure pipelines due to the super-strong self-adaptive capacity, ageing resistance and self-tightening effect of the flexible self-tightening sealing rubber ring, the sealing effect is good, and the use is convenient during installation. In this case, benefit from the self-expanding sealing that sealing rubber ring can hold certain gap and pass through flexible self-sealing rubber ring, consequently, realize that medium and high pressure pipeline can adopt the flexible coupling of clamp formula of standard number GBT 8260-2008, realizes buckling of less number of degrees.
The outer walls of the two pipelines at the pipeline joint are provided with flanging edges, and the hoop component is connected with the two pipelines through the flanging edges for connecting the two pipelines.
Preferably, a rubber ring groove is formed between the pipeline joints, and the sealing rubber ring is arranged in the rubber ring groove. The flexible self-tightening sealing rubber ring is fixed, and the sealing effect is ensured by matching with expansion sealing.
Preferably, the clamp assembly includes two arcuate clamps that are releasably connected to form a clamp assembly around the pipe joint. The disassembly and assembly are convenient.
Preferably, the expansion part of the sealing rubber ring is connected or communicated with the pipeline cavity through a gap at the joint of the pipeline.
Preferably, the expansion groove of the sealing rubber ring is connected or communicated with the pipeline cavity through a gap at the joint of the pipeline.
The gap of the expansion groove facing the pipeline joint is ensured, and the expansion part is ensured to receive pressure and expand and seal when leakage occurs.
Preferably, the two pipelines are arranged at intervals. Forming a flexible connection
Preferably, the clamp assembly includes two flanges fixed to the ends of the two pipes, respectively.
The connecting component formed by the two flanges can also be suitable for the sealing structure of the flexible self-sealing rubber ring matched with the pipeline.
Preferably, at least one of the two pipelines is provided with a groove for accommodating the flexible self-sealing rubber ring.
The groove is formed in the end of one of the pipes, so that the groove is deeper, and the sealing rubber ring is convenient to mount.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
the expansion of the rubber ring is realized by utilizing the pressure of a medium, rather than only utilizing the elasticity of the rubber ring, the expansion ratio is large, the self-adaptability is strong, and the problem of elastic loss caused by the aging of the rubber ring can be hardly considered; when the environmental temperature changes, secondary pre-tightening is not needed; the larger the leakage pressure is, the better the sealing effect is, and the leakage can be prevented under the pressure of 60 MPa; the self-stress is reasonable, so the service life is longer; the self-adaptability and the sealing effect of the sealing rubber ring are good, the clamp assembly which is more convenient and simpler to install can be adopted for fixing, only two bolts are required to be locked in each installation, the outer wall of the pipe is ensured to be uniformly stressed, and even if a certain gap exists between the interfaces of the two pipes, the sealing rubber ring can be used for well sealing through the self-adaptability of the sealing rubber ring; thanks to the self-adaptability of the sealing rubber ring, a certain gap is allowed between the fixed pipe and the movable pipe, and the movable pipe can be sealed in a self-adaptive manner through the sealing rubber ring, so that the clamp type flexible pipe joint with the standard number of GBT 8260-2008 can be manufactured. Because the sealing is carried out by means of expansion of the sealing rubber ring instead of simply relying on the elasticity of the sealing rubber ring, the influence of aging loss is small, and the service life is long.
Drawings
Fig. 1 is a schematic view of a sealing structure of embodiment 1.
Fig. 2 is a front view of the sealing structure of embodiment 1.
FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2 of example 1.
FIG. 4 is an enlarged view of a portion B of FIG. 3 according to example 1.
Fig. 5 is a schematic structural view of a sealing rubber ring in embodiment 1.
Fig. 6 is a cross-sectional view of a sealing structure of example 2.
Wherein, 1, a hoop component; 2. a fixed tube; 3. a movable tube; 4. sealing the rubber ring; 5. a rubber ring groove; 101. locking the bolt; 401. an expanding wall; 402. an expansion tank.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings 1 to 6, wherein fig. 1 to 5 show preferred embodiments of the present invention.
Example 1
With reference to the attached figures 1 to 3: a sealing structure comprises a fixed pipe 2, a movable pipe 3, a sealing rubber ring 4 and a clamp assembly 1; fixed pipe 2 links to each other with 3 tip of movable tube, fixed pipe 2 is equipped with the rubber ring groove 5 that encircles orificial with 3 junctions of movable tube, sealing rubber ring 4 sets up in rubber ring groove 5, the outer wall of fixed pipe 2 and the 3 continuous one end of movable tube all is equipped with the arch that encircles orificial, clamp subassembly 1 includes two semicircular clamps, two clamps surround and encircle the ring shape, fixed pipe 2's arch all sets up in the clamp with 3 archs of movable tube, in order to realize connecting fixed pipe 2 and movable tube 3, the one end that two clamps are adjacent all through the fixed locking of locking bolt 101.
Two tip that encircle the clamp all are provided with inward inside turn-ups, and each inside turn-ups inboard all is provided with the portion that compresses tightly of slope, makes two inside turn-ups's interval increase gradually along the direction that is close to the central line, and the arch of fixed pipe 2 and the arch of activity pipe 3 all are located between the inside turn-ups at each clamp both ends, and the portion that compresses tightly can compress tightly the arch of fixed pipe 2 and the arch of activity pipe 3.
The bulges of the fixed pipe 2 and the movable pipe 3 can be arranged at intervals to form a flexible connection.
Referring to fig. 4: the sealing rubber ring 4 is a flexible self-sealing rubber ring and is an annular elastic body, the annular inner wall is provided with two expansion walls 401, an expansion groove 402 is formed between the two expansion walls 401, the opening of the expansion groove 402 faces the pipe cavity of the fixed pipe 2 and the movable pipe 3, and the expansion groove 402 is connected or communicated with the pipe cavity through a gap formed by the joint of the fixed pipe 1 and the movable pipe 2.
When pressure is formed in the pipe cavity and the leakage from the interface is attempted, gaseous or liquid materials in the pipe leak from a gap formed at the interface and directly enter the expansion groove 402 of the sealing rubber ring 4, so that the expansion groove 402 expands, and the expansion wall 401 expands and extrudes towards the inner walls of the rubber ring grooves 5 on the two sides, thereby further expanding and sealing the rubber ring grooves 5 and avoiding the leakage. The width of the expansion tank 402 gradually widens from inside to outside to ensure that the outer wall tends to turn outwards to be sealed; and the bottom of expansion tank 402 is arc with indent middle part, avoids stress concentration, guarantees the pressurized inflation.
The rubber ring is expanded by utilizing the leakage pressure instead of the elasticity of the rubber ring, so that the expansion ratio is large, the self-adaptability is strong, and the problem of elastic loss caused by aging of the rubber ring can be almost not considered; when the environmental temperature changes, secondary pre-tightening is not needed; the larger the leakage pressure is, the better the sealing effect is, and the leakage can be prevented under the pressure of 60 MPa; the self-stress is reasonable, so the service life is longer; the sealing rubber ring 4 has good self-adaptability and sealing effect, the clamp assembly 1 which is more convenient and simpler to mount can be adopted for fixing, only two bolts need to be locked during each mounting, the outer wall of the pipe is ensured to be uniformly stressed, and even if a certain gap exists between the interfaces of the two pipes, the sealing rubber ring 4 can be used for good sealing through the self-adaptability; thanks to the self-adaptability of the sealing rubber ring 4, a certain gap is allowed between the fixed pipe 2 and the movable pipe 3, and the sealing rubber ring 4 can be used for self-adaptive sealing, so that the clamp type flexible pipe joint with the standard number of GBT 8260-2008 can be manufactured.
Example 2
Referring to fig. 6: a clamping hoop component 1 is provided with two flange structures which are respectively connected to the end parts of two pipelines on the basis of embodiment 1, and the two pipelines are connected through flanges. Meanwhile, only the joint of the movable pipe 3 is provided with a rubber ring groove 5 surrounding the pipe orifice, and the fixed pipe 2 is not provided with the rubber ring groove 5. Other conditions were the same as in example 1. By adopting the scheme that the rubber ring groove 5 is arranged on the single side, the rubber ring can be fixed in the movable pipe 3 before the installation is convenient, and the rubber ring is not easy to fall out and is convenient to install.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a flexible self-tightening rubber ring, includes the rubber ring main part, its characterized in that: an expansion groove (402) is arranged around the inner wall of the rubber ring main body, and the opening of the expansion groove (402) faces to the center of the rubber ring main body.
2. The flexible self-sealing grommet according to claim 1, characterized in that: the width of the expansion groove (402) is gradually widened from inside to outside.
3. The flexible self-sealing grommet according to claim 1 or 2, characterized in that: the bottom of the expansion groove (402) is in the shape of a circular arc with the middle part concave inwards.
4. The flexible self-sealing grommet according to claim 1, characterized in that: the rubber ring main body is made of elastic materials.
5. A sealing structure, characterized in that: the flexible self-sealing rubber ring comprises a sealing rubber ring (4) and a hoop component (1) which are arranged between joints of two adjacent pipelines, wherein the sealing rubber ring (4) is the flexible self-sealing rubber ring as claimed in any one of claims 1 to 4, and an expansion groove (402) is arranged around the joint of the pipeline joints and is opposite to the joint.
6. The seal structure of claim 5, wherein: the clamp component (1) comprises two arc-shaped clamps which are detachably connected to form the clamp component (1) surrounding the pipeline joint.
7. The seal structure of claim 5, wherein: the two pipelines are arranged at intervals.
8. The seal structure of claim 5, wherein: the clamp component (1) comprises two flanges which are respectively fixed at the end parts of the two pipelines.
9. The seal structure of claim 5, wherein: in the two pipelines, at least one pipeline end part is provided with a groove for accommodating the flexible self-sealing rubber sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223228423.8U CN218671034U (en) | 2022-12-03 | 2022-12-03 | Flexible self-sealing rubber sealing ring and sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223228423.8U CN218671034U (en) | 2022-12-03 | 2022-12-03 | Flexible self-sealing rubber sealing ring and sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218671034U true CN218671034U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223228423.8U Active CN218671034U (en) | 2022-12-03 | 2022-12-03 | Flexible self-sealing rubber sealing ring and sealing structure |
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| Country | Link |
|---|---|
| CN (1) | CN218671034U (en) |
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- 2022-12-03 CN CN202223228423.8U patent/CN218671034U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A flexible self tightening sealing rubber ring and sealing structure Effective date of registration: 20230410 Granted publication date: 20230321 Pledgee: Zibo Xinrun financing Company limited by guarantee Pledgor: SHANDONG JINCHENG LIANCHUANG PIPE INDUSTRY CO.,LTD. Registration number: Y2023980037629 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20230321 Pledgee: Zibo Xinrun financing Company limited by guarantee Pledgor: SHANDONG JINCHENG LIANCHUANG PIPE INDUSTRY CO.,LTD. Registration number: Y2023980037629 |