CN104421568A - T-shaped double-seal leakage stopping clamp for pipeline and processing method - Google Patents
T-shaped double-seal leakage stopping clamp for pipeline and processing method Download PDFInfo
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- CN104421568A CN104421568A CN201310371230.4A CN201310371230A CN104421568A CN 104421568 A CN104421568 A CN 104421568A CN 201310371230 A CN201310371230 A CN 201310371230A CN 104421568 A CN104421568 A CN 104421568A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
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- Mechanical Engineering (AREA)
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Abstract
The invention provides a T-shaped double-seal leakage stopping clamp for a pipeline and a processing method, and belongs to the technical field of quick leakage blocking, repairing or maintaining of pipelines in operation. The T-shaped double-seal leakage stopping clamp comprises a T-shaped clamp body, a propping sealing assembly, a circumferential sealing strip, spring-mounted universal balls, a circumferential sealing pressing plate, an axial sealing strip, an axial sealing pressing plate, a hoop, a top cover, a top cover fastening bolt, a locking nut and a half-clamping fastening bolt assembly; the T-shaped clamp body is a through body composed of a semicircular pipe housing and a vertical pipe which are vertically intersected, wherein the semicircular pipe housing is equipped with a lug plate, and while the top part of the vertical pipe is equipped with a flange; three sunken holes for mounting the spring-mounted universal balls are respectively uniformly arranged in two ends of the semicircular pipe housing along the housing; two circumferential sealing strip mounting grooves and two axial sealing strip mounting grooves are formed in the inner wall of the semicircular pipe housing; screw holes for pressure test or charging adhesive are respectively formed in four corners of an area surrounded with the four sealing grooves; a connecting plate is welded to the middle upper part of the vertical pipe; a threaded through hole for connecting the propping sealing assembly is formed in the center of the connecting plate.
Description
Technical field
The present invention relates to a kind of T-shaped double-sealing pipe plugging chucking tools and processing method, belong to the quick blocking of pipe leakage in operation, repairing or maintenance technique field.
Background technique
Mechanical pipe dimension first-aid clamp, because of in Process of Leaking Stoppage without the need to welding, speed of application is fast, and is widely adopted at the perforation of operation corrosive pipeline, weld metal crack and damaging in the little dimension repairing operation such as unexpected damaged.The mechanical pipe dimension first-aid clamp produced for the existing domestic design of mesohigh pipeline generally all adopts single sealed compartment formula structure, cross bolt by 2 semicircle half cartoons to connect as one, sealed by axial sealing stripe between 2 half cards, be placed on pipe leakage place, jig two ends and pipeline enclosure space are sealed by circumferential seal bar again, and form a sealed compartment in leak, realize the shutoff of pipe leakage.The advantage of this kind of jig is can on-line production leak stopping, can adapt to the leakage of more damaged form and larger damaged area; But its service condition and definitive application pressure will be subject to the pipe diameter degree of deviation and form and position tolerance restriction; Jig inwall directly contacts with pressure fed sheet of a media, the large bearing capacity that needs of area of contact is large, and thus wall thickness is thicker, and equipment is heavy, installation specification is high, need stricter erection sequence, during the tightening of bolt, need skew symmetry evenly repeatedly to apply pretightening force piecemeal, guarantee jig and pipeline gap and uniform force, reach the shutoff pressure of expection, pretightening force needed for bolt is large, and inconvenience is manually installed, and generally needs pneumatic or hydraulic tool auxiliary construction; Construction quality checks difficulty, and plugging effect need improve realization by the working pressure of runing pipeline; For improving the operational safety of jig, Security and working life, also need between jig half card after general installation, and jig and pipeline welding; Mainly be applicable to the submarine pipeline of land pipelines or drying maintain.For the underwater diver dimension repairing of beach shallow sea pipeline, due to the dimension first-aid clamp of single sealed compartment formula structure, to the requirement of the pipe diameter degree of deviation and form and position tolerance, limit its applicability; Equipment is thick and heavy, installation procedure and require high, and diver installs under water, operating difficulties, is difficult to reach installation requirement.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of T-shaped double-sealing pipe plugging chucking tools and processing method.
The invention provides high pipeline working pressure in a kind of adaptation; To the pipe diameter degree of deviation and form and position tolerance strong adaptability; Lighter in weight, simple installation, blocking speed is fast, is convenient to diver's underwater construction; Can independent detection installation quality, the pipe plugging chucking tools that the pipe pressurized blocking construction of underwater diver meeting beach shallow sea pipeline requires.
A kind of T-shaped double-sealing pipe plugging chucking tools, T-shaped fixture body 1 structure and being characterized as: T-shaped fixture body 1 is the intersecting body having the standpipe of flange to intersect vertically by the semi-circular tube housing of band otic placode and top; Semi-circular tube housing two ends are along each uniform 3 counterbores for mounting strap spring univesal sphere 4 of housing, semi-circular tube inner walls has 2 circumferential seal bar mounting grooves 15 and 4 jiaos, 2 axial sealing stripe mounting grooves, 16,4 regions that seal groove surrounds respectively to have 1 for pressure testing or the screw injecting jelly; Standpipe middle and upper part is welded with connecting plate 14, and there is tapped through hole at connecting plate 14 center, and tapped through hole is for connecting top means of press seals assembly 2;
Top means of press seals assembly 2 structure and being characterized as: top means of press seals assembly 2 is made up of bear down on one lid 22, top means of press seals block 23, top means of press seals block rubber 24, socket head screw 25 of top pressure screw rod 21, top; Socket head screw 25 connects top and to bear down on one lid 22 and top means of press seals block 23;
Top pressure screw rod 21 is made up of square driving end 17, spiro rod section 18, reinforcement directional post 19 and 20 4 parts of presenting a theatrical performance as the last item on a programme; The end of top pressure screw rod 21 is square driving end 17, the having spiro rod section 18, strengthen directional post 19 of top pressure screw rod 21, and the top lid 22 that bears down on one is set on the pressure screw rod 21 of top, by socket head screw 25 with push up means of press seals block 23 and be connected; The bear down on one center circle through hole of lid 22 of reinforcement directional post 19 and the top of top pressure screw rod 21 matches, and presents a theatrical performance as the last item on a programme 20 to be positioned at top and to bear down on one lid 22 and push up the cylindrical cavity that means of press seals block 23 is connected to form, and fills lubricating grease in cavity; Top means of press seals block rubber 24 is installed on bottom top means of press seals block 23, presses embedding connection with top means of press seals block 23; Top means of press seals block rubber 24 has and the cylindrical body of pipeline with the groove in footpath for bottom;
Position relationship between each parts and Placement: upwards the spiro rod section 18 of top pressure screw rod 21 is screwed in the connecting plate screw of the standpipe middle and upper part of T-shaped fixture body 1 by T-shaped fixture body 1 riser bottom, top means of press seals assembly 2 is connected with T-shaped fixture body 1, and makes top means of press seals block rubber 24 be positioned at T-shaped fixture body 1 standpipe; Locking nut 12 screws in the spiro rod section 18 of top means of press seals assembly 2, holds out against the connecting plate 14 of the standpipe of T-shaped fixture body 1, the position of locking top means of press seals assembly 2 and height; Circumferential seal pressing plate 5 is parallel with the circumferential seal bar mounting groove 15 of T-shaped fixture body 1, axial seal pressing plate 7 is parallel with the axial sealing stripe mounting groove 16 of T-shaped fixture body 1, on the semicircular shell inwall being welded in T-shaped fixture body 1 respectively and otic placode, 2 circumferential seal bars 3 and 2 axial sealing stripes 6 are pressed respectively embedding be installed on T-shaped fixture body 1 inwall 2 circumferential seal bar mounting grooves 15 and 2 axial sealing stripe mounting grooves 16 in; Half clamping fixing bolt assembly 13 is crossed T-shaped fixture body 1 and both is connected with the through hole on the respective otic placode of clip 8, and fixture body can be made to be fastened on official road; Bolt of top cover fixed 11 crosses top cover 10 and top seal pad 9 being tightly connected top cover 10 and T-shaped fixture body 1 riser top flange.
A processing method for T-shaped double-sealing pipe plugging chucking tools, containing following steps;
Vertically being hung by the T-shaped fixture body 1 of T-shaped double-sealing pipe plugging chucking tools 100 stands on pipe leakage place side pipeline section, is connected by each clip 8 with half clamping fixing bolt assembly 13 with T-shaped fixture body 1; Screwing off 6 band spring univesal sphere 4 peaks on pipeline outer wall; Jig 100 is pushed into leaking position of pipeline, and rotates, make top means of press seals assembly 2 substantially align Leak hole; Tighten half clamping fixing bolt assembly 13 of both sides in the middle part of T-shaped fixture body 1, make jig 100 be fixed on pipeline; Rotate the top pressure screw rod 21 of top means of press seals assembly 2, make top means of press seals block rubber 24 press seal live Leak hole, pipe leakage is stopped, and blocks the standpipe end opening of T-shaped fixture body 1, complete first sealing; Unclamp 6 band spring univesal sphere 4; By the order on centre, left side, right side, diagonal angle symmetry tightens all half clamping fixing bolt assemblies 13 of T-shaped fixture body 1 both sides step by step, until reach the pretightening force of regulation, makes each circumferential seal bar 3 and axial sealing stripe 6 compress pipe outer wall, completes second sealing; Utilize the pressure testing on T-shaped fixture body 1 to inject screw, carry out voltage-withstand test, if can not authorized pressure be reached, then increase the pressure of top means of press seals block rubber 24, or tighten half clamping fixing bolt assembly 13 further, until reach requirement test pressure by the order of regulation; For ensureing the reliability and stability of sealing, injecting screw by the pressure testing on T-shaped fixture body 1, after injecting sealer or injecting sealant, injecting screw with screw shutoff pressure testing, realizing three seals.
The key that the present invention is different from prior art invention is: T-shaped double-sealing pipe plugging chucking tools of the present invention, caulking gum block top means of press seals and sealing joint strip is adopted to surround the combined sealing structure of sealed compartment formula sealing, can three seals be realized, thus high pipeline working pressure in using the present invention to carry; To the pipe diameter degree of deviation and form and position tolerance strong adaptability; Blocking speed is fast, is convenient to diver's underwater construction; Can independent detection installation quality, can pressure sealing construction.Adopt half card and yoke configurations, and screw top means of press seals block structure, compared with the dimension first-aid clamp of single sealed compartment formula structure, weight saving about 1/2, and easy and simple to handle, more can meet the pipe pressurized blocking construction job requirements of beach shallow sea pipeline underwater diver.
Advantage of the present invention to carry high pipeline working pressure; To the pipe diameter degree of deviation and form and position tolerance strong adaptability; Lighter in weight, blocking speed is fast, and diver is easy for installation under water; Can independent detection installation quality, submarine pipeline high reliability request can be adapted to, the construction requirement of the diver well meeting beach shallow sea bottom pipeline pressure sealing under water.
For the T-shaped double-sealing pipe plugging chucking tools of the present invention of Φ 323.7*12.7 submarine pipeline, the pressure medium of 25MPa can be carried; The pipe diameter of maximum 8mm and shape position error can be adapted to caliber list sealed compartment formula structure maximum adaptation 4mm deviation; Weight is comparatively light by about 1/2 with single sealed compartment formula structure of length with caliber, can more easily with pure artificial installation; The leak-stopping time only needs 5 minutes from by being placed into timing the other jig of pipeline is sling, and with caliber list sealed compartment formula structure jig, seals minimum need 30 minutes completely; Independently can carry out the hydrostatic test and detect installation effect; In the cavity that two seals surrounds, inject sealer, pipeline bearing medium pressure can reach the test pump pressure maximum of 35MPa, but not most high-mechanic pressure.Result shows, T-shaped double-sealing pipe plugging chucking tools of the present invention reaches every purpose of design, can adapt to submarine pipeline high reliability request, the construction requirement of the diver well meeting beach shallow sea bottom pipeline pressure sealing under water.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is structural representation of the present invention.
Fig. 2 is T-shaped fixture body structural representation of the present invention.
Fig. 3 is top of the present invention means of press seals modular construction schematic diagram.
Fig. 4 is installation shaft side structure schematic diagram of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of T-shaped double-sealing pipe plugging chucking tools, is made up of T-shaped fixture body 1, top means of press seals assembly 2, circumferential seal bar 3, band spring univesal sphere 4, circumferential seal pressing plate 5, axial sealing stripe 6, axial seal pressing plate 7, clip 8, top seal pad 9, top cover 10, bolt of top cover fixed 11, locking nut 12, half clamping fixing bolt assembly 13.
T-shaped fixture body 1 structure and being characterized as: T-shaped fixture body 1 is the intersecting body having the standpipe of flange to intersect vertically by the semi-circular tube housing of band otic placode and top; Semi-circular tube housing two ends are along each uniform 3 counterbores for mounting strap spring univesal sphere 4 of housing, semi-circular tube inner walls has 2 circumferential seal bar mounting grooves 15 and 4 jiaos, 2 axial sealing stripe mounting grooves, 16,4 regions that seal groove surrounds respectively to have 1 for pressure testing or the screw injecting jelly; Standpipe middle and upper part is welded with connecting plate 14, and there is tapped through hole at connecting plate 14 center, and tapped through hole is for connecting top means of press seals assembly 2.
Top means of press seals assembly 2 structure and being characterized as: top means of press seals assembly 2 is made up of bear down on one lid 22, top means of press seals block 23, top means of press seals block rubber 24, socket head screw 25 of top pressure screw rod 21, top.Top pressure screw rod 21 is made up of square driving end 17, spiro rod section 18, reinforcement directional post 19 and 20 4 parts of presenting a theatrical performance as the last item on a programme; Socket head screw 25 connects top and to bear down on one lid 22 and top means of press seals block 23; The end of top pressure screw rod 21 is square driving end 17, the having spiro rod section 18, strengthen directional post 19 of top pressure screw rod 21, and the top lid 22 that bears down on one is set on the pressure screw rod 21 of top, by socket head screw 25 with push up means of press seals block 23 and be connected; The bear down on one center circle through hole of lid 22 of reinforcement directional post 19 and the top of top pressure screw rod 21 matches, and presents a theatrical performance as the last item on a programme 20 to be positioned at top and to bear down on one lid 22 and push up the cylindrical cavity that means of press seals block 23 is connected to form, and fills lubricating grease in cavity; Top means of press seals block rubber 24 is installed on bottom top means of press seals block 23, presses embedding connection with top means of press seals block 23; Top means of press seals block rubber 24 has and the cylindrical body of pipeline with the groove in footpath for bottom.
Position relationship between each parts and Placement: upwards the spiro rod section 18 of top pressure screw rod 21 is screwed in the connecting plate screw of the standpipe middle and upper part of T-shaped fixture body 1 by T-shaped fixture body 1 riser bottom, top means of press seals assembly 2 is connected with T-shaped fixture body 1, and makes top means of press seals block rubber 24 be positioned at T-shaped fixture body 1 standpipe; Locking nut 12 screws in the spiro rod section 18 of top means of press seals assembly 2, holds out against the connecting plate 14 of the standpipe of T-shaped fixture body 1, the position of locking top means of press seals assembly 2 and height; Circumferential seal pressing plate 5 is parallel with the circumferential seal bar mounting groove 15 of T-shaped fixture body 1, axial seal pressing plate 7 is parallel with the axial sealing stripe mounting groove 16 of T-shaped fixture body 1, on the semicircular shell inwall being welded in T-shaped fixture body 1 respectively and otic placode, 2 circumferential seal bars 3 and 2 axial sealing stripes 6 are pressed respectively embedding be installed on T-shaped fixture body 1 inwall 2 circumferential seal bar mounting grooves 15 and 2 axial sealing stripe mounting grooves 16 in; Half clamping fixing bolt assembly 13 is crossed T-shaped fixture body 1 and both is connected with the through hole on the respective otic placode of clip 8, and fixture body can be made to be fastened on official road; Bolt of top cover fixed 11 crosses top cover 10 and top seal pad 9 being tightly connected top cover 10 and T-shaped fixture body 1 riser top flange.
Band otic placode semicircle housing 27 connects another band otic placode semi circular shells body by bolt 13 and forms T-shaped double-sealing pipe plugging chucking tools 100, the inner chamber of T-shaped double-sealing pipe plugging chucking tools 100 connects to leak runs pipeline 101, leak operation pipeline 101 and have Leak hole 30, band otic placode semicircle housing 27 connects top flange standpipe 26, and band otic placode semicircle housing 27 has univesal sphere to install counterbore 28, screw 29 is injected in pressure testing.
Sealing configuration feature: rotate top pressure screw rod 21 and make top means of press seals block rubber 24 compress pipe leakage place, form first sealing; And the lower riser end mouth of top means of press seals block rubber 24 deformable seal T-shaped fixture body 1; The semi-circular tube housing of T-shaped fixture body 1, pipeline outer wall, top means of press seals block rubber 24, circumferential seal bar 3 and axial sealing stripe 6 surround Seal cage, form second sealing; Also can inject sealer or injecting sealant in the Seal cage that second sealing is formed, form three seals.
Principle of the present invention is: the present invention by top means of press seals, surround Seal cage sealing, injecting or injecting glue sealing formed multiple tracks and multi-form combined sealing structure, can ensure the present invention can carry reliably in high pipeline pressure, sealing reliability is high, Cemented filling medium does not directly contact with steel fixture body, can extend working life of the present invention.
Adopt top of the present invention pressure sealing structure form, caulking gum block thickness is larger, variability amount is large, the larger pipe diameter degree of deviation and form and position tolerance can be adapted to, only need rotate top pressure screw rod, make caulking gum block directly act on pipe leakage place, just can realize sealing, fast easy and simple to handle, required applying active force is little, is convenient to diver's underwater operation.
Adopt structural type of the present invention, compared with the dimension first-aid clamp of single sealed compartment formula structure, fixture body bearing capacity is little, therefore fixture body wall thickness reduction, and adopts half card and clip to install means of fixation, makes its gross weight can alleviate about 1/2; Fixture body is designed with band spring univesal sphere, the present invention can be made on pipeline circumferential and axial to facilitate fast moving, therefore can be pre-assembled in the non-leak of pipeline, be then pushed into leak rapid alignment leakage position, be convenient to diver's underwater operation.
Fixture body only need be fixed on pipeline with the clip connected of one, middle part, and just can carry out top means of press seals operation, therefore leak stopping is rapid.Screw is injected in pressure testing on the Seal cage and T-shaped fixture body that utilize second to seal to surround, can independently carry out the detection that jig installs actual voltage endurance capability and installation quality, compressing into row without the need to the increase and decrease by runing pipeline to detect, the reliability of dimension repairing operation, operation pipe safety can be improved and reduce maintenance cost.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (2)
1. a T-shaped double-sealing pipe plugging chucking tools, is characterized in that:
T-shaped fixture body structure and being characterized as: T-shaped fixture body is the intersecting body having the standpipe of flange to intersect vertically by the semi-circular tube housing of band otic placode and top; Semi-circular tube housing two ends are along each uniform 3 counterbores for mounting strap spring univesal sphere of housing, semi-circular tube inner walls has 2 circumferential seal bar mounting grooves and 2 axial sealing stripe mounting grooves, and 4 jiaos, the region that 4 seal grooves surround respectively has 1 for pressure testing or the screw injecting jelly; Standpipe middle and upper part is welded with connecting plate, and there is tapped through hole at connecting plate center, and tapped through hole is for connecting top means of press seals assembly;
Top means of press seals modular construction and being characterized as: top means of press seals assembly by pushing up pressure screw rod, lid is beared down on one on top, top means of press seals block, push up means of press seals block rubber, socket head screw forms; Bear down on one lid and top means of press seals block on socket head screw connection top;
Top pressure screw rod is made up of square driving end, spiro rod section, reinforcement directional post and four parts of presenting a theatrical performance as the last item on a programme; The end of top pressure screw rod is square driving end, the having spiro rod section, strengthen directional post of top pressure screw rod, and the top lid that bears down on one is set on the pressure screw rod of top, by socket head screw with push up means of press seals block and be connected; The reinforcement directional post of top pressure screw rod matches with top center circle through hole cover that bears down on one, and presents a theatrical performance as the last item on a programme to be positioned at top and to bear down on one and cover and push up the cylindrical cavity that means of press seals block is connected to form, and fills lubricating grease in cavity; Top means of press seals block rubber is installed on bottom the means of press seals block of top, presses embedding connection with top means of press seals block; Top means of press seals block rubber is that bottom has and the cylindrical body of pipeline with the groove in footpath;
Position relationship between each parts and Placement: upwards the spiro rod section of top pressure screw rod is screwed in the connecting plate screw of the standpipe middle and upper part of T-shaped fixture body by T-shaped fixture body riser bottom, top means of press seals assembly is connected with T-shaped fixture body, and makes top means of press seals block rubber be positioned at T-shaped fixture body standpipe; Locking nut screws in the spiro rod section of top means of press seals assembly, holds out against the connecting plate of the standpipe of T-shaped fixture body, the position of locking top means of press seals assembly and height; Circumferential seal pressing plate is parallel with the circumferential seal bar mounting groove of T-shaped fixture body 1, axial seal pressing plate is parallel with the axial sealing stripe mounting groove of T-shaped fixture body 1, on the semicircular shell inwall being welded in T-shaped fixture body respectively and otic placode, 2 circumferential seal bars and 2 axial sealing stripes are pressed respectively embedding be installed on T-shaped fixture body inwall 2 circumferential seal bar mounting grooves and 2 axial sealing stripe mounting grooves in; Half clamping fixing bolt assembly is crossed T-shaped fixture body and both is connected with the through hole on the respective otic placode of clip, and fixture body can be made to be fastened on official road; Bolt of top cover fixed crosses top cover and top seal pad being tightly connected top cover and T-shaped fixture body riser top flange.
2. a processing method for T-shaped double-sealing pipe plugging chucking tools, is characterized in that containing following steps;
Vertically being hung by the T-shaped fixture body of T-shaped double-sealing pipe plugging chucking tools stands on pipe leakage place side pipeline section, is connected by each clip with half clamping fixing bolt assembly with T-shaped fixture body; Screwing off 6 band spring univesal sphere peaks on pipeline outer wall; Jig is pushed into leaking position of pipeline, and rotates, make top means of press seals assembly substantially align Leak hole; Tighten half clamping fixing bolt assembly of both sides in the middle part of T-shaped fixture body, make jig be fixed on pipeline; Rotate the top pressure screw rod of top means of press seals assembly, make top means of press seals block rubber press seal live Leak hole, pipe leakage is stopped, and blocks the standpipe end opening of T-shaped fixture body, complete first sealing; Unclamp 6 band spring univesal sphere; By the order on centre, left side, right side, diagonal angle symmetry tightens all half clamping fixing bolt assemblies of T-shaped fixture body both sides step by step, until reach the pretightening force of regulation, makes each circumferential seal bar and axial sealing stripe compress pipe outer wall, completes second sealing; Utilize the pressure testing on T-shaped fixture body to inject screw, carry out voltage-withstand test, if can not authorized pressure be reached, then increase the pressure of top means of press seals block rubber, or tighten half clamping fixing bolt assembly further, until reach requirement test pressure by the order of regulation; For ensureing the reliability and stability of sealing, injecting screw by the pressure testing on T-shaped fixture body, after injecting sealer or injecting sealant, injecting screw with screw shutoff pressure testing, realizing three seals.
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| CN201310371230.4A CN104421568A (en) | 2013-08-23 | 2013-08-23 | T-shaped double-seal leakage stopping clamp for pipeline and processing method |
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| CN201310371230.4A CN104421568A (en) | 2013-08-23 | 2013-08-23 | T-shaped double-seal leakage stopping clamp for pipeline and processing method |
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| CN104913802A (en) * | 2015-06-17 | 2015-09-16 | 核工业理化工程研究院 | Test-used marker |
| CN105546267A (en) * | 2016-01-22 | 2016-05-04 | 江苏中核利柏特股份有限公司 | Plugging device for pipeline water pressure test |
| CN106594451A (en) * | 2017-02-07 | 2017-04-26 | 蓝色海洋（天津）工程技术有限公司 | Pipe pressure leakage blockage device and leakage blockage method |
| CN106838538A (en) * | 2017-03-30 | 2017-06-13 | 天津天石带压密封有限公司 | A kind of Pressurized plugging clamp and application method for blind flange end face sand holes |
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| CN112923164A (en) * | 2021-04-16 | 2021-06-08 | 攀钢集团西昌钢钒有限公司 | Leakage blocking method and leakage blocking device |
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Application publication date: 20150318 |