CN102878383A - Isolating belt pressure sealing clamp - Google Patents
Isolating belt pressure sealing clamp Download PDFInfo
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- CN102878383A CN102878383A CN2012103522254A CN201210352225A CN102878383A CN 102878383 A CN102878383 A CN 102878383A CN 2012103522254 A CN2012103522254 A CN 2012103522254A CN 201210352225 A CN201210352225 A CN 201210352225A CN 102878383 A CN102878383 A CN 102878383A
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Abstract
The invention discloses an isolating belt pressure sealing clamp, which is used in the technology of injecting belt pressure sealing for treating that the wall thickness of a straight pipe section, a tee and an elbow part in an operating pipeline are obviously reduced or the leakage defect size is larger, the flange strength is insufficient in linear sealing structure flanges and connecting bolts caused by various reasons, and the leakage accident is caused by the compound material pipelines with insufficient rigidity. The isolating belt pressure sealing clamp includes a clamp main body, an annular injecting groove, an axial injecting groove, an isolating sealing cavity and injecting holes, wherein the annular injecting groove, the axial injecting groove and the injecting holes are formed in the clamp main body; the leakage defect part is covered in the isolating sealing cavity to form isolating effect with the annular injecting groove and the axial injecting groove, so that the leakage defect part is not subjected to the damage or breakage of the external force; by arranging the injecting holes in the annular injecting groove and the axial injecting groove to inject sealant, the sealant is strictly limited in the injecting groove to flow and be filled, and is free from the direct contact with the leakage defect part; as the stress area is stripped, the whole stress on the clamp and the whole stress on the leaked pipeline are obviously reduced; and when the working sealing specific pressure of the sealant injected into the injecting groove is bigger than the pressure of the leaked medium, the purpose of belt pressure sealing is achieved.
Description
Technical field
The present invention relates to a kind of isolated seal clamp with pressure, larger for straight length, threeway, the obvious attenuate of bend part wall thickness or leakage defect size in " agent injecting type sealing technique with pressure " disposal in-service pipeline, linear sealing structure flanges, connecting bolt cause the flange of strength deficiency because of a variety of causes, the leakage accident that the various composite material conduits of insufficient rigidity occur.The sealed groove that an isolated seal clamp with pressure seal clamp self arranges, the injecting sealant that is expelled in the sealed groove does not directly contact with the leakage defect position, injecting sealant can be expelled to the leakage defect pipe-line system inner, realize that injecting sealant and leakage defect are in the isolation purpose; Can not cause external pressure unstability accident to the defect of pipeline position yet, therefore be called isolated seal clamp with pressure.It is a breakthrough on the seal clamp design concept with pressure.
Background technique
At continization process industry production field, the leakage problem of flowing medium remains the principal element that causes various serious accidents to occur.The technical way that is used at present the accident of stopping a leak both at home and abroad is to adopt sealing technique with pressure, stops a leak to reach fast, guarantees the purpose of the normal operation of safety in production.
Sealing technique with pressure is after specializing in former sealing configuration and losing efficacy, and how under the condition that does not reduce pressure, temperature and leakage flow, again creating with pressure sealing structure on the leakage defect position rapidly is an emerging engineering technology program of purpose.Sealing technique with pressure adopts seal clamp with pressure, injecting sealant with pressure and hydraulic injection instrument, can be at pressure: vacuum～32MPa; Temperature: in-198 ℃～800 ℃ scopes, eliminate all kinds of dielectric leakages that continization process industry production field occurs, have the advantages that to need not to stop production, safely, reliably reach long service life.Its basic principle is: " to specific enclosed cavity injection Special seal injecting, reach to stop and leak required operating unit sealing load, realize again sealing purpose ".Relate to multi-disciplinary comprehensive application technologies such as mechanics, hydraulics, macromolecular material, inorganic material, Metal Material Science, rheology, process industry safety in production and the indispensable emergency repair technology of public safety, belong to the sealing technique category, its People's Republic of China's subject classification and code is: 4107010.
" closed cavity " in the sealing technique with pressure mainly is comprised of " seal clamp with pressure " and leakage position outer surface, and strict intensity, rigidity and seal clearance requirement are arranged.Therefore, seal clamp with pressure is to be installed in outside, leakage defect position in the sealing technique with pressure, form sealed cavity with leakage defect position part outer surface, the metal construction that provides strength and stiffness to guarantee is the key link that determines sealing technique application success or failure with pressure.
The effect of seal clamp with pressure:
One of effect of seal clamp with pressure, to contain by injection gun to be expelled to injecting sealant in seal clamp with pressure and the formed sealed cavity of leakage position part outer surface, guarantee injecting sealant filling, keep increasing progressively, prevent that injecting sealant is excessive, making the injecting sealant that is expelled in the anchor clamps produce enough seal pressures of injecting pressure, stop leakage.Being called for short sealing guarantees.
Two of the effect of seal clamp with pressure is to bear powerful injection pressure and the leaking medium pressure that injection gun produces, do not allow distortion and displacement to occur, and be the rigidity guarantee system of newly-established sealing configuration.Being called for short rigidity guarantees.
In addition, seal clamp with pressure also has a booster action, and Here it is connects injection gun by the injecting hole, and the injecting passage is provided.
The design criterion of the effect of seal clamp with pressure:
Because seal clamp with pressure has very important effect in " sealing technique with pressure ", the quality of its design will be directly connected to the many indexs such as consumption of the success or failure of sealing operation with pressure and execute-in-place time, injecting sealant.Should follow transfers between divisions:
1) anastomose property well.The seal clamp shape with pressure that designs and produces must fit like a glove with the external shape of leakage position.
2) enough intensity.Seal clamp with pressure has not allowed any breakoff phenomenon to occur bearing under the supercoated stress effects such as injecting pressure, leaking medium pressure and installation stress.
3) enough rigidity.Seal clamp with pressure has not allowed any type of displacement and distortion bearing injecting pressure, leaking medium pressure and installing under the supercoated stress effects such as stress, guarantees the formation of seal pressure and keeps.
4) suitable sealed cavity.The sealed cavity that a sealing must be arranged between seal clamp with pressure and the leakage position is so that injection and containing injecting sealant.The width of sealed cavity should surpass about the actual size 20～40mm of leakage defect, and the height of sealed cavity namely forms the thickness of the injecting sealant of sealing structure of rock, generally should be between 6～15mm, and special circumstances can also be thickeied.
5) contact gap is tight.The gap of the contact segment of seal clamp with pressure and leakage position outer surface and leaking medium pressure are inverse ratio.When this gap can not stop injecting sealant excessive effectively, then can consider to design and produce in anchor clamps and leakage defect contact position the sealing configuration of ring, flute profile sealing configuration or other form, increase the excessive resistance of injecting sealant.
6) the injecting hole is offered.For the high pressure injection gun is connected on the seal clamp with pressure, and by the high pressure injection gun injecting sealant is expelled in the sealed cavity, should be provided with tapped injecting hole on the seal clamp with pressure.The quantity in injecting hole and distribution are advisable can successfully make injecting sealant fill with whole sealed cavity.Must discharge the gas in seal clamp with pressure and the formed sealed cavity of leakage position part outer surface when considering sealing operation with pressure, simultaneously discharging not yet stops the pressure medium to leak, should be provided with at least plural injecting hole on the general anchor clamps.
7) piecemeal is reasonable.Seal clamp with pressure should be partitioned organization, is linked to be rigid unitary after being installed on the leakage position again, forms the sealed cavity of a sealing.According to the size of seal clamp with pressure, and in conjunction with the concrete condition of leakage position, seal clamp with pressure can be designed to two equal portions, three equal parts or more umber.
8) larger for the leakage defect size, leakage defect position strength and stiffness are obviously not enough, and leakage pipe is comprised of composite material, inner in order to prevent that injecting sealant is expelled to the leakage defect pipe-line system by force, and avoid when seal operation with pressure, injecting sealant produces larger stress to the defect of pipeline position, causes the generation of pipeline external pressure unstability accident, should design and produce isolated seal clamp with pressure.
When the leakage defect size of pipeline larger, leakage defect position strength and stiffness are obviously not enough, or leakage pipe is comprised of composite material, when carrying out sealing operation with pressure, jig Design should consider that injecting sealant may be expelled to by force leakage defect pipe-line system inside or the defect of pipeline position is produced larger stress, causes the problems such as pipeline external pressure unstability accident generation.But larger for the leakage defect size of pipeline both at home and abroad at present, leakage defect position strength and stiffness are obviously not enough, and the leakage accident that occurs on the composite material conduit, what generally adopt is that the leakage defect position all is enclosed in the sealed cavity of anchor clamps, then directly injects injecting sealant to the sealed cavity of anchor clamps.Such as Chinese patent CN201120259649.7 Quartered sealing clamp for blocking leakage with pressure, CN200420010479.9 injection type seal clamp, a CN201110136262.7 flange clamp that is used for bolt corrosion and linear sealing etc.Above-mentioned anchor clamps are at the scene during actual sealing operation with pressure, the injecting sealant that is expelled to by force in the sealed cavity all directly contacts with leakage defect, easily injecting sealant is expelled to by force the leakage defect pipe-line system inner, or to the larger stress of rejected region generation, cause pipeline external pressure unstability, particularly to the leakage accident of the generation of composite material conduit, above-mentioned anchor clamps lose using value fully.Therefore need invention to design the seal clamp isolated with pressure that meets the objective reality needs.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of structure more novel a kind of isolated seal clamp with pressure.
The invention provides a kind of isolated seal clamp with pressure, comprising: jig main body, hoop injecting groove, axial injecting groove, isolating seal chamber, injecting hole form.Be provided with hoop injecting groove at jig main body, axial injecting groove and injecting hole, being used for straight length leaks, flange leakage, threeway is leaked, hoop sealing and axial seal that elbow leaks, and leakage defect is covered by in the isolating seal chamber, form isolation effect with hoop injecting groove and axial injecting groove, make the leakage defect position can not be subject to damage or the destruction of external force, the jig main body of two full symmetrics forms a complete straight length by connecting bolt and leakage pipe, flange, threeway, the effective sealing structure of elbow, by on hoop injecting groove and axial injecting groove, injection injecting sealant in injecting hole being set, injecting sealant strictly is limited in to flow in the injecting groove and filling, directly do not contact with the leakage defect position, and lifting surface area is strip, the overall stressed of overall stressed and leakage pipe of anchor clamps obviously reduces, when the operating unit sealing load that in the injecting groove, forms of injecting sealant of injection during greater than the pressure of leaking medium, realize sealing purpose with pressure.
The nominal diameter of described jig main body equals the leakage pipe external diameter, and its length should guarantee all effectively to cover the actual size of leakage defect.The nominal diameter of jig main body refers to the actual size that itself and leakage pipe external diameter directly contact, and must determine by on-the-spot actual measurement.
The internal diameter of described hoop injecting groove equals the leakage pipe external diameter, groove width 6mm to 16mm, dark 6mm to 12mm.
The length of described axial injecting groove should guarantee all to cover the actual size of leakage defect, groove width 6mm to 16mm, dark 6mm to 12mm.
Described isolating seal chamber internal diameter should be greater than leakage pipe external diameter 2mm to 10mm, and its length should guarantee all to cover the actual size of leakage defect.
Described injecting hole is M12 or M14 female thread structure, and the spacing in two injecting holes should be not more than 112mm.
Description of drawings
Fig. 1 is isolated seal clamp structural representation with pressure.
Fig. 2 is the isolated seal clamp schematic diagram with pressure of straight length.1 is jig main body, the 2nd among the figure, hoop injecting groove, the 3rd, axial injecting groove, the 4th, isolating seal chamber, the 5th, injecting hole.
Fig. 3 is the isolated seal clamp schematic diagram with pressure of branch pipe tee connection.1 is jig main body, the 2nd among the figure, hoop injecting groove, the 3rd, axial injecting groove, the 4th, isolating seal chamber, the 5th, injecting hole.
Fig. 4 is the isolated seal clamp schematic diagram with pressure of channel bend.1 is jig main body, the 2nd among the figure, hoop injecting groove, the 3rd, axial injecting groove, the 4th, isolating seal chamber, the 5th, injecting hole.
Embodiment
Embodiment one: when the straight length of pipeline or flange occur to leak, for preventing that injecting sealant is expelled to by force leakage defect pipe-line system inside or causes pipeline external pressure unstability, particularly the straight length of composite material conduit or flange leak, and should select the isolated seal clamp structural type with pressure of straight length shown in Figure 2.After anchor clamps were made, at first straight length or the flange at same size carried out the trial assembly anchor clamps, and did necessary grinding trimming, then installed injection valve at anchor clamps, and the position that it is in out; During on-the-spot sealing operation with pressure, operator should stand in public attention; The installation of anchor clamps should make the bursting direction avoid the binding site of splitting of anchor clamps, and should avoid fierce bump; Tighten the anchor clamps connecting bolt, the joint gap of gauging fixture and leakage position is to suitable; At first connect the high pressure injection gun at hoop injecting groove, carry out the injecting operation, and solidify a period of time, injecting sealant is lost flowability, then connect the high pressure injection gun at axial injecting groove, carry out the injecting operation, eliminate until leak.
Embodiment two: when the threeway of pipeline occurs to leak, for preventing that injecting sealant is expelled to by force leakage defect pipe-line system inside or causes pipeline external pressure unstability, particularly the threeway of composite material conduit is leaked, and should select the isolated seal clamp structural type with pressure of threeway shown in Figure 3.After anchor clamps are made, at first carry out the trial assembly anchor clamps in the threeway of same size, and do necessary grinding trimming, then install injection valve at anchor clamps, and the position that it is in out; During on-the-spot sealing operation with pressure, operator should stand in public attention; The installation of anchor clamps should make the bursting direction avoid the binding site of splitting of anchor clamps, and should avoid fierce bump; Tighten the anchor clamps connecting bolt, the joint gap of gauging fixture and leakage position is to suitable; At first connect the high pressure injection gun at hoop injecting groove, carry out the injecting operation, and solidify a period of time, injecting sealant is lost flowability, then connect the high pressure injection gun at axial injecting groove, carry out the injecting operation, eliminate until leak.
Embodiment three: when the elbow of pipeline occurs to leak, for preventing that injecting sealant is expelled to by force leakage defect pipe-line system inside or causes pipeline external pressure unstability, particularly the elbow of composite material conduit leaks, and should select the isolated seal clamp structural type with pressure of elbow shown in Figure 4.After anchor clamps were made, at first the elbow at same size carried out the trial assembly anchor clamps, and did necessary grinding trimming, then installed injection valve at anchor clamps, and the position that it is in out; During on-the-spot sealing operation with pressure, operator should stand in public attention; The installation of anchor clamps should make the bursting direction avoid the binding site of splitting of anchor clamps, and should avoid fierce bump; Tighten the anchor clamps connecting bolt, the joint gap of gauging fixture and leakage position is to suitable; At first connect the high pressure injection gun at hoop injecting groove, carry out the injecting operation, and solidify a period of time, injecting sealant is lost flowability, then connect the high pressure injection gun at axial injecting groove, carry out the injecting operation, eliminate until leak.
Being skillful in those skilled in the art person is understandable that, except above-mentioned specific description, embodiments of the invention are illustrative and not restrictive, in the situation that do not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.
Claims (6)
1. isolated seal clamp with pressure, comprise: jig main body (1), hoop injecting groove (2), axial injecting groove (3), isolating seal chamber (4), injecting hole (5) forms, it is characterized in that, jig main body (1) is provided with hoop injecting groove (2), axial injecting groove (3) and injecting hole (5), being used for straight length leaks, flange leakage, threeway is leaked, hoop sealing and axial seal that elbow leaks, and leakage defect is covered by in the isolating seal chamber (4), form isolation effect with hoop injecting groove (2) and axial injecting groove (3), make the leakage defect position can not be subject to damage or the destruction of external force, the jig main body of two full symmetrics (1) forms a complete straight length by connecting bolt and leakage pipe, flange, threeway, the effective sealing structure of elbow, by on hoop injecting groove (2) and axial injecting groove (3), injection injecting sealant in injecting hole (5) being set, injecting sealant strictly is limited in to flow in the injecting groove and filling, directly do not contact with the leakage defect position, and lifting surface area is strip, the overall stressed of overall stressed and leakage pipe of anchor clamps obviously reduces, when the operating unit sealing load that in the injecting groove, forms of injecting sealant of injection during greater than the pressure of leaking medium, realize sealing purpose with pressure.
2. a kind of isolated seal clamp with pressure according to claim 1 is characterized in that, the nominal diameter of described jig main body (1) equals the leakage pipe external diameter, and its length should guarantee all effectively to cover the actual size of leakage defect.
3. a kind of isolated seal clamp with pressure according to claim 1 is characterized in that, the internal diameter of described hoop injecting groove (2) equals the leakage pipe external diameter, groove width 6mm to 16mm, dark 6mm to 12mm.
4. a kind of isolated seal clamp with pressure according to claim 1 is characterized in that, the length of described axial injecting groove (3) should guarantee all to cover the actual size of leakage defect, groove width 6mm to 16mm, dark 6mm to 12mm.
5. a kind of isolated seal clamp with pressure according to claim 1 is characterized in that, described isolating seal chamber (4) internal diameter should be greater than leakage pipe external diameter 2mm to 10mm, and its length should guarantee all to cover the actual size of leakage defect.
6. a kind of isolated seal clamp with pressure according to claim 1 is characterized in that, described injecting hole (5) is M12 or M14 female thread structure, and the spacing in two injecting holes should be not more than 112mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103522254A CN102878383A (en) | 2012-09-21 | 2012-09-21 | Isolating belt pressure sealing clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103522254A CN102878383A (en) | 2012-09-21 | 2012-09-21 | Isolating belt pressure sealing clamp |
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| Publication Number | Publication Date |
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| CN102878383A true CN102878383A (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103522254A Pending CN102878383A (en) | 2012-09-21 | 2012-09-21 | Isolating belt pressure sealing clamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133771A (en) * | 2013-03-14 | 2013-06-05 | 刘绍康 | Three-way shunting blocking device and blocking regeneration method thereof |
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN110296292A (en) * | 2018-03-21 | 2019-10-01 | 福鸣环保科技（深圳）有限公司 | Elbow ball face sealing device |
| CN113566049A (en) * | 2021-07-15 | 2021-10-29 | 上海瑞契工程技术有限公司 | Resealing device |
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| US5301983A (en) * | 1992-03-23 | 1994-04-12 | Porowski Jan S | Pipe component seal assembly |
| CN2690712Y (en) * | 2004-03-29 | 2005-04-06 | 尚关奎 | Injection type seal clamp |
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| CN101749511A (en) * | 2010-01-30 | 2010-06-23 | 安徽同发设备股份有限公司 | Hafu joint |
| CN101994891A (en) * | 2009-08-27 | 2011-03-30 | 上海梅山钢铁股份有限公司 | High-temperature and high-pressure leakage blocking clamp tool with pressure |
| CN202852326U (en) * | 2012-09-21 | 2013-04-03 | 天津市江达扬升工程技术有限公司 | Isolated seal fixture with pressure |
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2012
- 2012-09-21 CN CN2012103522254A patent/CN102878383A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2519731A1 (en) * | 1982-01-08 | 1983-07-18 | Lamotte Jean Noel | Seal for leak in pressurised pipe - has sealed cylindrical box allowing leak to escape through tap |
| US5301983A (en) * | 1992-03-23 | 1994-04-12 | Porowski Jan S | Pipe component seal assembly |
| CN2690712Y (en) * | 2004-03-29 | 2005-04-06 | 尚关奎 | Injection type seal clamp |
| WO2005114036A1 (en) * | 2004-04-29 | 2005-12-01 | Jorge Jose Schuhwerk | Assembly for repairing a subsea pipeline and method |
| CN2887532Y (en) * | 2006-01-18 | 2007-04-11 | 中国石油大庆石油化工总厂 | Flange arc under pressure leakage-blocking clamp apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133771A (en) * | 2013-03-14 | 2013-06-05 | 刘绍康 | Three-way shunting blocking device and blocking regeneration method thereof |
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN108087658B (en) * | 2017-07-20 | 2019-10-11 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN110296292A (en) * | 2018-03-21 | 2019-10-01 | 福鸣环保科技（深圳）有限公司 | Elbow ball face sealing device |
| CN113566049A (en) * | 2021-07-15 | 2021-10-29 | 上海瑞契工程技术有限公司 | Resealing device |
| CN113566049B (en) * | 2021-07-15 | 2023-06-13 | 上海瑞契工程技术有限公司 | Resealing means |
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Addressee: Tianjin Branch of GunnerYS Co..Ltd. Document name: Notification of an Office Action |
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Address after: 300270 Tianjin anda Industrial Park, Binhai New Area in the town of Rieter Street No. 248 Applicant after: Tianjin Branch of GunnerYS Co..Ltd. Applicant after: Jiangsu GunnerYS Co., Ltd. Address before: 300270 Tianjin city Grand Port Jinhui Road No. 1515 Applicant before: Tianjin Branch of GunnerYS Co..Ltd. Applicant before: Jiangsu GunnerYS Co., Ltd. |
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Application publication date: 20130116 |