CN202280975U - Self-sealing double-rubber-ring pipeline flexible interface - Google Patents
Self-sealing double-rubber-ring pipeline flexible interface Download PDFInfo
- Publication number
- CN202280975U CN202280975U CN2011202160064U CN201120216006U CN202280975U CN 202280975 U CN202280975 U CN 202280975U CN 2011202160064 U CN2011202160064 U CN 2011202160064U CN 201120216006 U CN201120216006 U CN 201120216006U CN 202280975 U CN202280975 U CN 202280975U
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- cushion rubber
- plug
- conical surface
- lead
- wedge
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Abstract
The utility model relates to a self-sealing double-rubber-ring pipeline flexible interface especially suitable for the connection of large, middle and ultra-large sized liquid medium conveying pipes, which is characterized in that two sealing rings capable of bearing a higher pressure of a pipeline and compensating the rebounding force descending due to the ageing of rubber rings in the manner of automatically increasing the compression ratio of the sealing rings are arranged inside the interface. Therefore, the connection interface of a pipeline is sealed permanently and tightly. A rigid circular ring and a pressure testing small hole are arranged between the two sealing rubber rings. Due to the arrangement of the rigid circular ring, a uniform circular gap is ensured between the plugs of two pipelines, while the compression ratio of the rubber circular ring is ensured to be uniform. Meanwhile, the gravities of mutually connected pipelines can be supported by the rigid circular ring. Therefore, the easily occurred leakage phenomenon of traditional sealing rubber rings caused by the non-uniform gap between the sealing rings is avoided, while the rubber rings are prevented from bearing the gravities of pipelines and quickened aging. The sealing performance of the interface can be individually tested through the input hydraulic pressure of the pressure testing small hole. Therefore, the connection quality of each interface can be synchronously tested during the pipeline installation process. The above interface is especially suitable for the expanding forming process of traditional pipelines.
Description
Technical field
The utility model patent relates to a kind of pipe, the connection interface of particularly large and medium-sized and oversized conveying liquid medium pipe.
Background technique
Carry the pipe of liquid medium will rely on reliable connection ability proper functioning, and the connection of the flexible interface of cushion rubber is most convenient and the most frequently used connecting means.
The flexible interfaces that flexibly connect single and two cushion rubbers of present known pipe connection interface.Though the connection simple structure of the flexible interface of single cushion rubber can not be carried out applied voltage test to single connection interface, whether the connection of its interface water-tight to wait whole section pipe to install after, whole segment pipe is filled water could pressurize and check the quality of connection of interface.The connection of the flexible interface of two cushion rubbers is because the interface of each connection all has two cushion rubbers; The check so can pressurize in the space between two cushion rubbers; Solved single cushion rubber flexible interface want to pressurize after the installation of whole piece pipeline section drawback of check; Both practiced thrift the check water, and solved again because of repairing the loaded down with trivial details of defective interface secondary excavation pipe hole, the flexible interface connection of therefore using two cushion rubbers has great significance to improving the pipeline quality of connection.
It is the 2 interior (see figure 1)s of taking the lead that injected another root pipe by the plug 1 of a pipe that traditional two cushion rubbers flexibly connect interface; Through the ring gap between the pressurized bounce-back sealing socket joint head that is installed in cushion rubber 5,6 in the pipe junctor groove 3,4 in advance, realize being tightly connected of interface.This cushion rubber is installed in the plug groove, pushes the structure in taking the lead again, have a lot of hidden danger of quality.One of which, follow plug when cushion rubber and get into together when taking the lead; The outer round surface of cushion rubber and the very big frictional force of generation between the endoporus of taking the lead, this frictional force can with the part colloid 7,8 of cushion rubber bring into take the lead and plug between gap 9,10 in, cause the undercut of cushion rubber to damage phenomenon; Serious cushion rubber undercut phenomenon can make interface lose the ability of sealing at once; Though lighter cushion rubber undercut phenomenon can be born certain pressure when interface applied voltage test at that time, this breakdown point can become the stress concentration point of cushion rubber, makes the colloid of cushion rubber enlarge cracking gradually; Fracture until causing cushion rubber loses sealability.Two, follow plug and get into together when taking the lead, the phenomenon that the cylindrical of cushion rubber and the bore area of taking the lead can occur adhering to, thereby the damage that causes cushion rubber to be torn when cushion rubber.Three, the sealability size of cushion rubber is to be directly proportional with the rebounding force of cushion rubber; And the rebounding force of cushion rubber is directly proportional with the compression ratio of cushion rubber; Because the too big compression ratio of this interface cushion rubber causes the undercut of cushion rubber, the damage that adhesion is torn easily; So the cushion rubber compression ratio of this kind interface can only be lower, can not adapt to the use of high pressure pipe line.Four, the O-ring seal of this interface can constantly reduce rebounding force along with the aging of colloid, produces the phenomenon that irreversible sealability constantly descends, and this is to cause this interface pipeline long more along with service time, the immediate cause that leakage situation is serious more.Five, after the pipe of installing sheds the lifting rope; The weight of its pipe and backfill not only can with bring plug into and take the lead between cushion rubber colloid in the gap shear; Cause the damage of cushion rubber; But also make the pipe joint inequality of ring gap up and down, and make cushion rubber annulus compression ratio uneven, cause the hidden danger of interface leak.Therefore, the uneven phenomenon in gap between undercut, adhesion, shearing and the annulus of solution cushion rubber avoids cushion rubber because of the aging leakage problem that occurs, and is the key link that improves pipeline work safety reliability.
Summary of the invention
The purpose of the utility model provides a kind ofly can be avoided cushion rubber undercut, shearing, adhesion to occur tearing and damage and interface leak that ring gap compression ratio inequality causes; And have with the mode that automatically increases the cushion rubber compression ratio again and bear the bigger pressure of the pipeline automatic sealing function that rebounding force that cause descends with the compensation cushion rubber is aging, make the pressure-bearing limit and the service life of the bearing capacity of interface and effectively sealing time and pipeline synchronous.
Comprising from the two cushion rubber pipeline flexible interfaces of motive sealing of the utility model taken the lead, plug, forward and backward wedge-type seal chamber, two cushion rubbers and rigid; Outer conical surface before plug ends has one section, outer conical surface after preceding outer conical surface rear end has a section, there is the rigid of an evagination jointing place of forward and backward outer conical surface; There is one section internal conical surface the end of taking the lead, and one section inner cylindrical surface is arranged behind the internal conical surface, and one section female cone transitional surface is arranged between internal conical surface and the inner cylindrical surface; Hold, after plug inserts each other, take the lead inner cylindrical surface and plug front cone face form the preceding wedge-type seal chamber with angle, back wedge-type seal chamber with angle of outer conical surface formation behind take the lead internal conical surface and the plug; Article two, cushion rubber be in respectively hold, plug inserts in the forward and backward wedge-type seal chamber that the back forms the interface that sealing is taken the lead, plug connects each other.The tapering of the preceding outer conical surface of plug is less than 10 °, and the tapering of the back outer conical surface of plug is greater than the tapering of preceding outer conical surface, and the tapering of the internal conical surface of taking the lead is less than the tapering of the back outer conical surface of plug.
The utility model when the two cushion rubber pipeline flexible interface (see figure 2)s of motive sealing are installed; The cushion rubber that is in the plug port is in the process that the socket joint head inserts each other; The interaction of the preceding outer conical surface of internal conical surface, female cone transitional surface, inner cylindrical surface and plug that the cushion rubber process is taken the lead; When obtaining radial compression, its cylindrical and interior circle produce frictional force in the opposite direction with the preceding outer conical surface of the internal conical surface of taking the lead, female cone transitional surface, inner cylindrical surface and plug respectively, make the line footpath colloid of cushion rubber obtain the moment of torsion that rolls and rotate; Thereby the mode with lift-over gets into preceding wedge-type seal chamber, and obtains the initial compression ratio; During installation; The inboard cushion rubber of rigid that is in the plug evagination is in the process that the socket joint head inserts each other, and the interaction of the internal conical surface that the cushion rubber process is taken the lead and the back conical surface of plug is when obtaining radial compression; Its cylindrical and interior circle produce frictional force in the opposite direction with the back outer conical surface of internal conical surface of taking the lead and plug respectively; Make the line footpath colloid of cushion rubber obtain the moment of torsion of rotation that rolls, thereby get into wedge-type seal chamber, back, and obtain the initial compression ratio with the mode of lift-over; So even the initial compression of cushion rubber is bigger than again, also can avoid placing groove cushion rubber undercut that occurs and the phenomenon that adheres to damage.Simultaneously; Because the forward and backward Seal cage 11,13 that cushion rubber 12 and 14 places all is to be wedge-like; Big medium of the wedge shape of cushion rubber towards pipeline pressure, so the rebounding force of bearing bigger pressure (as the phenomenon of water hammer takes place) or causing cushion rubber because of the reduction rebounding force that wears out when cushion rubber when pipeline during less than the pressure of line transportation medium, cushion rubber can be under the pressure effect of pipeline medium; Wedge point direction to the wedge-type seal chamber moves; Obtain the compression ratio of increase again of cushion rubber, bear the pressure of pipeline increase or compensate the rebounding force that wears out and reduce because of cushion rubber, prevent the seepage of interface.Therefore; The self-sealing performance of this pipe joint; It is aging and cause the problem of leakage not only thoroughly to solve the conventional seals cushion rubber; And can make pipe applications rubber sealing ability can bear the ultimate pressure of pipeline allowable stress, make the bearing capacity of interface synchronous with the pressure-bearing limit and the service life of effective sealing time and pipeline.Simultaneously, its external diameter of the rigid of plug evagination is bigger slightly than the inner cylindrical surface internal diameter of taking the lead, after the socket joint head inserts mutually; The rigid 19 of plug and the interference fit that female cone transitional surface 23 forms, make hold, plug is concentric, make hold, plug is concentric; Make the ring gap in forward and backward wedge-type seal chamber even; And support the weight that interconnects pipe, and avoided of the direct compressing of the weight of pipeline and backfill to cushion rubber, cause the phenomenon of cushion rubber because of transition compressing accelerated ageing.
Description of drawings
Fig. 1, traditional double cushion rubber pipeline flexible connection interface
1, plug; 2, take the lead; 3,4, groove; 5,6, cushion rubber; 7,8, part colloid; 9,10, gap
Fig. 2, from the two cushion rubber pipeline flexible interfaces of motive sealing
11, preceding wedge-type seal chamber; 12, cushion rubber; 13, wedge-type seal chamber, back; 14, cushion rubber; 15, take the lead; 16, plug; 17, preceding outer conical surface; 18, back outer conical surface; 19, rigid; 20, internal conical surface; 21, inner cylindrical surface; 22, water inlet aperture; 23, female cone transitional surface
Embodiment
From motive sealing double-sealing cushion rubber pipeline flexible interface by plug 16, take the lead 15 and cushion rubber 12,14 form, its cushion rubber be in hold, plug inserts in the forward and backward wedge-type seal chamber 11,13 that the back forms the interface that sealing is taken the lead, plug connects each other.
There is one section conicity plug 16 ends less than 10 ° preceding outer conical surface 17; There is the back outer conical surface 18 of one section conicity greater than preceding outer conical surface conicity the rear end of preceding outer conical surface 17; There is the stiffening ring 19 of an evagination jointing place of forward and backward conical surface 17,18; The external diameter of stiffening ring 19 is bigger slightly than the internal diameter of the inner cylindrical surface of taking the lead 21, and the internal conical surface 20 of outer conical surface 18 conicities had one section inner cylindrical surface 21 after 15 the end of taking the lead had one section conicity less than plug behind the internal conical surface 20; One section female cone transitional surface 23 is arranged between internal conical surface 20 and the inner cylindrical surface 21, and there is a water inlet aperture 22 rigid 19 inboards.
When this kind interface is installed, earlier cushion rubber 14 and 12 is placed the inboard of plug rigid 19 and the port of preceding outer conical surface 17 respectively, again plug 16 is drawn in the 15 interior rigid 19 to plug of taking the lead and insert in the female cone transitional surfaces 23.At this moment; Cushion rubber 12 is through the interaction with the preceding outer conical surface 17 of plug 16 of 15 the internal conical surface 20 of taking the lead, female cone transitional surface 23, inner cylindrical surface 21; When obtaining radial compression; The cylindrical of its cushion rubber and interior circle produce frictional force in the opposite direction with the preceding outer conical surface 17 of take the lead 15 internal conical surface 20, female cone transitional surface 23, inner cylindrical surface 21 and plug 16 respectively, make the line footpath colloid of cushion rubber obtain the moment of torsion that rolls and rotate, thus wedge-type seal chamber 11 before getting into the mode of lift-over.Cushion rubber 14 is also through the interaction of the back outer conical surface 18 of take the lead 15 internal conical surface 20 and plug; When obtaining radial compression; The cylindrical of its cushion rubber and interior circle produce frictional force in the opposite direction with the back outer conical surface 18 of take the lead 15 internal conical surface 20 and plug 16 respectively; Make the line footpath colloid of cushion rubber obtain the moment of torsion that rolls and rotate, thereby get into wedge-type seal chamber, back 13, make cushion rubber 12,14 radially obtain 40%～65% initial compression and compare sealed interface with the mode of lift-over.Simultaneously; Hold, after plug inserts each other; 15 inner cylindrical surfaces 21 of taking the lead just form a preceding wedge-type seal chamber 11 with angle with plug 16 front cone faces 17, and the back outer conical surface 18 of take the lead 15 internal conical surface 20 and plug 16 also forms a back wedge-type seal chamber 13 with angle, and order is also pressed to wedge shape with the upset cushion rubber 12,14 that gets into forward and backward wedge-type seal chamber that rolls; Because the big face of the wedge shape of cushion rubber is towards the medium of pipeline pressure; So when pipeline was worked, the rebounding force of bearing bigger pressure (as the phenomenon of water hammer takes place) or causing cushion rubber because of the reduction rebounding force that wears out when cushion rubber when pipeline was during less than the pressure of line transportation medium, cushion rubber can be under the effect of pressure medium; Move into to wedge point direction; The cushion rubber that obtains increases compression ratio again and rises to 85%, bears the pressure of pipeline increase or compensates the rebounding force that wears out and reduce because of cushion rubber, prevents the seepage of interface.Therefore; Interface is this to have self-sealing function and has not only thoroughly solved legacy interface aging or compression ratio causes the problem of interface leak inadequately because of cushion rubber; And can make pipe applications rubber sealing ability can bear the ultimate pressure of pipeline allowable stress, make the bearing capacity of interface synchronous with the pressure-bearing limit and the service life of effective sealing time and pipeline.Simultaneously, this interface side in the rigid 19 of plug 16 is provided with a water inlet aperture 22, after interface connects, can apply hydraulic pressure through the confined area that forms between water inlet 22 pairs of cushion rubbers 12 of aperture and the cushion rubber 14, checks the quality of connection of each interface.
This interface can be used on metal tube, plastic tube and cylinder concrete pipe, and the two ends of every pipe should have respectively and take the lead and plug at that time.Evagination rigid on the plug can be circular and square; Its evagination rigid both can make and having held, obtain the gap of even annulus between the plug; Guarantee the even compression ratio that the cushion rubber annulus has; Can support the gravity that connects pipe again, thus avoid traditional cushion rubber to leak because of sealed circular ring gap inequality causes and cushion rubber because of the problem of the gravity accelerated ageing of bearing pipe.Water inlet aperture 22 also can place in 15 the female cone transitional surface 23 of taking the lead, Fig. 2 be conventional steel adopt dilate the moulding process moulding from the two cushion rubber pipeline flexible interface casts of motive sealing.The moulding of this kind steel pipe from the two cushion rubber pipeline flexible interfaces of motive sealing; Also can increase twice weld seam ring with the lap-joint that takes the lead at take the lead port and plug and plug port; Make this interface become the rigid interface of socket weld, to bear the push-pull effort that built on stilts bending moment force of pipeline or pipeline are turned.
Claims (6)
1. one kind from the two cushion rubber pipeline flexible interfaces of motive sealing, it is characterized in that: comprise take the lead, plug, forward and backward wedge-type seal chamber, two cushion rubbers and rigid; Outer conical surface before plug ends has one section, outer conical surface after preceding outer conical surface rear end has a section, there is the rigid of an evagination jointing place of forward and backward outer conical surface; There is one section internal conical surface the end of taking the lead, and one section inner cylindrical surface is arranged behind the internal conical surface, and one section female cone transitional surface is arranged between internal conical surface and the inner cylindrical surface; Hold, after plug inserts each other, take the lead inner cylindrical surface and plug front cone face form the preceding wedge-type seal chamber with angle, back wedge-type seal chamber with angle of outer conical surface formation behind take the lead internal conical surface and the plug; Article two, cushion rubber be in respectively hold, plug inserts in the forward and backward wedge-type seal chamber that the back forms the interface that sealing is taken the lead, plug connects each other.
2. according to claim 1 a kind of from the two cushion rubber pipeline flexible interfaces of motive sealing; It is characterized in that: the tapering of the preceding outer conical surface of plug is less than 10 °; The tapering of the back outer conical surface of plug is greater than the tapering of preceding outer conical surface, and the tapering of the internal conical surface of taking the lead is less than the tapering of the back outer conical surface of plug.
3. according to claim 1 a kind of from the two cushion rubber pipeline flexible interfaces of motive sealing; It is characterized in that: during installation; The cushion rubber that is in the plug port is in the process that the socket joint head inserts each other, and the interaction of the preceding outer conical surface of internal conical surface, female cone transitional surface, inner cylindrical surface and plug that the cushion rubber process is taken the lead is when obtaining radial compression; Its cylindrical and interior circle produce frictional force in the opposite direction with the preceding outer conical surface of the internal conical surface of taking the lead, female cone transitional surface, inner cylindrical surface and plug respectively; Make the line footpath colloid of cushion rubber obtain the moment of torsion of rotation that rolls, thereby get into preceding wedge-type seal chamber, and obtain the initial compression ratio with the mode of lift-over; During installation; The inboard cushion rubber of rigid that is in the plug evagination is in the process that the socket joint head inserts each other, and the interaction of the internal conical surface that the cushion rubber process is taken the lead and the back conical surface of plug is when obtaining radial compression; Its cylindrical and interior circle produce frictional force in the opposite direction with the back outer conical surface of internal conical surface of taking the lead and plug respectively; Make the line footpath colloid of cushion rubber obtain the moment of torsion of rotation that rolls, thereby get into wedge-type seal chamber, back, and obtain the initial compression ratio with the mode of lift-over.
4. according to claim 1 a kind of from the two cushion rubber pipeline flexible interfaces of motive sealing; It is characterized in that: after the socket joint head inserted connection each other, its cushion rubber also was wedge shape, big medium towards pipeline pressure of the wedge shape of cushion rubber; When cushion rubber bears pipe medium pressure; Can obtain the compression ratio of increase again of cushion rubber through immigration, bear the pressure of pipeline increase or compensate cushion rubber because of the aging rebounding force that is reduced to wedge-type seal chamber wedge point direction.
5. according to claim 1 a kind of from the two cushion rubber pipeline flexible interfaces of motive sealing; It is characterized in that: its external diameter of the rigid of plug evagination is bigger slightly than the inner cylindrical surface internal diameter of taking the lead; After the socket joint head inserted each other, the rigid of plug formed interference fit with the female cone transitional surface of taking the lead, make hold, plug is concentric; Make the ring gap in forward and backward wedge-type seal chamber even, and supporting interconnect the weight of pipe.
6. according to claim 1 a kind of from the two cushion rubber pipeline flexible interfaces of motive sealing, it is characterized in that: cushion rubber obtains initial compression than between 40%～65%; The compression ratio of increase again that cushion rubber obtains rises to 85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202160064U CN202280975U (en) | 2011-06-23 | 2011-06-23 | Self-sealing double-rubber-ring pipeline flexible interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202160064U CN202280975U (en) | 2011-06-23 | 2011-06-23 | Self-sealing double-rubber-ring pipeline flexible interface |
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| Publication Number | Publication Date |
|---|---|
| CN202280975U true CN202280975U (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202160064U Expired - Fee Related CN202280975U (en) | 2011-06-23 | 2011-06-23 | Self-sealing double-rubber-ring pipeline flexible interface |
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| CN (1) | CN202280975U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242841A (en) * | 2011-06-23 | 2011-11-16 | 陈穗玲 | Self-sealing double-rubber-ring pipeline flexible connector |
| CN107061902A (en) * | 2016-09-07 | 2017-08-18 | 程宇婷 | A kind of anti-pulling flexible tube interface |
| CN107606354A (en) * | 2017-10-20 | 2018-01-19 | 程宇婷 | A kind of leakproof high-performance flexible interface |
| CN112460347A (en) * | 2020-12-25 | 2021-03-09 | 程思哲 | Single-groove pipeline interface capable of independently testing pressure |
| CN114274529A (en) * | 2021-12-08 | 2022-04-05 | 罗博隆 | Reinforced concrete flexible socket pipe mounting equipment |
| CN114274529B (en) * | 2021-12-08 | 2024-05-03 | 浙江龙创管业有限公司 | Reinforced concrete flexible bell and spigot pipe installation equipment |
-
2011
- 2011-06-23 CN CN2011202160064U patent/CN202280975U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242841A (en) * | 2011-06-23 | 2011-11-16 | 陈穗玲 | Self-sealing double-rubber-ring pipeline flexible connector |
| CN102242841B (en) * | 2011-06-23 | 2013-08-07 | 陈穗玲 | Self-sealing double-rubber-ring pipeline flexible connector |
| CN107061902A (en) * | 2016-09-07 | 2017-08-18 | 程宇婷 | A kind of anti-pulling flexible tube interface |
| CN107606354A (en) * | 2017-10-20 | 2018-01-19 | 程宇婷 | A kind of leakproof high-performance flexible interface |
| CN112460347A (en) * | 2020-12-25 | 2021-03-09 | 程思哲 | Single-groove pipeline interface capable of independently testing pressure |
| CN114274529A (en) * | 2021-12-08 | 2022-04-05 | 罗博隆 | Reinforced concrete flexible socket pipe mounting equipment |
| CN114274529B (en) * | 2021-12-08 | 2024-05-03 | 浙江龙创管业有限公司 | Reinforced concrete flexible bell and spigot pipe installation equipment |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Suiling Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20150623 |
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| EXPY | Termination of patent right or utility model |