CN113418077A - Rapid repairing device and repairing method for natural gas pipeline - Google Patents
Rapid repairing device and repairing method for natural gas pipeline Download PDFInfo
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- CN113418077A CN113418077A CN202110656753.8A CN202110656753A CN113418077A CN 113418077 A CN113418077 A CN 113418077A CN 202110656753 A CN202110656753 A CN 202110656753A CN 113418077 A CN113418077 A CN 113418077A
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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
- F16L55/1725—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 in which the threaded pin is rigid with the hose encircling member
Abstract
The invention discloses a quick repairing device and a repairing method for a natural gas pipeline.A first sealing shell and a second sealing shell are provided with two fixing clamp assemblies; the inner wall of the first sealing shell is provided with a first sealing groove, a second sealing groove and a third sealing groove, and the inner wall of the second sealing shell is provided with a fourth sealing groove; a plurality of first anti-skid bump groups are arranged on the inner surface of the first fixing clamp in the fixing clamp assembly, and a plurality of second anti-skid bump groups are arranged on the inner surface of the second fixing clamp. The first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are attached to the outer wall surface of the damaged natural gas pipeline, sealing is reliable, the third sealing ring and the fourth sealing ring seal the attaching positions of the first sealing shell and the longitudinal splitting surfaces on the two sides of the second sealing shell, and the sealing bulge on the fourth sealing ring is embedded into the groove of the third sealing ring, so that the sealing effect is better; the first anti-skid bump group of the first fixing clamp and the second anti-skid bump group of the second fixing clamp abut against the outer wall surface of the damaged natural gas pipeline, and the first sealing shell and the second sealing shell are prevented from deviating from the damaged position of the natural gas pipeline due to sliding.
Description
Technical Field
The invention belongs to the technical field of pipeline repair, and particularly relates to a quick repair device and a quick repair method for a natural gas pipeline.
Background
The oil and gas pipe network is an important infrastructure of energy production and consumption revolution, and has important significance for resource allocation. However, due to the influences of geological conditions, material characteristics, human factors and the like, safety accidents of oil and gas pipelines frequently occur, and the safety accidents are a world problem. Because the natural gas is in the state of pressure from the process of conveying and storing to the process of using by the user, the harmfulness is often bigger when the natural gas pipeline is in an accident, and the spread range is wider.
However, the whole-line replacement of new pipelines not only has huge engineering quantity, but also has large cost and long engineering period. Therefore, the economic, efficient and quick recovery of the safe operation of the pipeline is significant. Most pipeline companies consider the use of overlay welding or repair welding to repair pipeline defects as a very convenient and easy-to-use repair solution. There are risks associated with performing welding operations on running pipes, including the risk of burning through or bursting of the pipe walls. The nonmetal winding repair technology has obvious advantages, the technology does not need to be directly welded on a pipeline or be welded, but is influenced by factors such as the proficiency of constructors, the repair quantity, the construction environment, the initial state of raw materials and the like, and the effectiveness and the durability of a repair layer are uncertain.
Therefore, how to make the natural gas pipeline repairing device more convenient, faster, safer and more reliable is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a quick repairing device and a repairing method for a natural gas pipeline aiming at the defects of the prior art.
The invention discloses a quick repairing device for a natural gas pipeline, which comprises a fixing clamp assembly, a bolt, a stop washer, a nut, a first sealing ring, a second sealing ring, a third sealing ring, a first sealing shell, a second rotating shaft, a fourth sealing ring and a second sealing shell; the fixing clamp assembly comprises a first fixing clamp, a second fixing clamp and a first rotating shaft; the first fixing clamp, the second fixing clamp, the first sealing shell and the second sealing shell are all in a semi-cylindrical shape; the fixation clamp subassembly is equipped with two. One side of the first fixing clamp is provided with a first through hole, and the other side of the first fixing clamp is provided with an integrally formed first rotating arm; the end face of one end of the first fixing clamp is provided with a first integrally formed hook ring; the inner surface of the first fixing clamp is provided with a first anti-skid bump group which is axially arranged at equal intervals; the first anti-skid bump group consists of a plurality of first anti-skid bumps which are uniformly distributed along the circumferential direction; the stop washer is provided with a second through hole and a plurality of integrally formed stop claws; a third through hole is formed in one side of the second fixing clamp, and a second rotating arm which is integrally formed is arranged on the other side of the second fixing clamp; the end face of one end of the second fixing clamp is provided with a second integrally-formed hook ring; the inner surface of the second fixing clamp is provided with a second anti-skid bump group which is arranged at equal intervals along the axial direction; the antiskid lug group II consists of antiskid lugs II; the aperture of the through hole III is equal to that of the through hole I, the structure of the hook ring II is completely consistent with that of the hook ring I, and the structure of the antiskid lug II is completely consistent with that of the antiskid lug I; and a center hole of the first rotating arm of the first fixing clamp is hinged with a center hole of the second rotating arm of the second fixing clamp through a first rotating shaft. Two ends of the outer wall of the first sealing shell are provided with first grooves; the first groove is matched with the first hook ring; one side of the first sealing shell is provided with a fourth through hole, and the other side of the first sealing shell is provided with a third rotating arm which is integrally formed; the inner wall of the first sealing shell is provided with a first sealing groove, a second sealing groove and a third sealing groove, the second sealing groove is located on the periphery of the first sealing groove, and the third sealing groove is located on the periphery of the second sealing groove; the first sealing groove and the second sealing groove are both composed of two first arc-shaped groove sections and two first axial straight line groove sections for connecting the two first arc-shaped groove sections; the sealing groove III comprises an arc-shaped groove section II and two axial linear groove sections II which are connected with the two arc-shaped groove sections II; a first sealing ring is embedded in the first sealing groove, a second sealing ring is embedded in the second sealing groove, and a third sealing ring is embedded in the third sealing groove; the first sealing ring and the second sealing ring are both composed of two first arc-shaped sealing sections and two first axial linear sealing sections for connecting the two first arc-shaped sealing sections; the sealing ring III comprises an arc-shaped sealing section II and two axial linear sealing sections II which are connected with the two arc-shaped sealing sections II; two ends of the outer wall of the second sealing shell are both provided with a second groove; the second groove is matched with the second hook ring; one side of the sealing shell II is provided with a through hole V, and the other side of the sealing shell II is provided with an integrally formed rotating arm IV; the aperture of the fifth through hole is equal to that of the fourth through hole; a sealing groove IV is formed in the inner wall of the sealing shell II; the structure of the sealing groove IV is completely consistent with that of the sealing groove III; a sealing ring IV is embedded in the sealing groove IV; the fourth sealing ring also comprises a second arc-shaped sealing section and two second axial linear sealing sections for connecting the two second arc-shaped sealing sections; and a center hole of the rotating arm III of the first sealing shell is hinged with a center hole of the rotating arm IV of the second sealing shell through a rotating shaft II.
Preferably, nuts are welded on the third through hole of the second fixing clamp and the fifth through hole of the second sealing shell.
Preferably, the end parts of two ends of the arc-shaped groove section II of the third sealing groove and the end parts of two ends of the arc-shaped groove section II of the fourth sealing groove are respectively provided with a radial groove section, the radial groove section and the axial linear groove section II of the third sealing groove are both arranged at the position of the longitudinal splitting surface of the first sealing shell, and the radial groove section and the axial linear groove section II of the fourth sealing groove are both arranged at the position of the longitudinal splitting surface of the second sealing shell; and the end parts of two ends of the arc-shaped sealing section of the third sealing ring and the end parts of two ends of the arc-shaped sealing section of the fourth sealing ring are respectively provided with a radial sealing section.
More preferably, the radial sealing section and the axial linear sealing section II of the third sealing ring are both provided with grooves, and the grooves of the radial sealing section and the axial linear sealing section II on the same side are communicated; and the radial sealing section and the axial linear sealing section II of the sealing ring IV are both provided with sealing bulges, and the sealing bulges are matched with the grooves.
Preferably, the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are all made of fluororubber.
Preferably, the two ends of the outer wall of the first sealing shell are respectively provided with a first integrally-formed reinforcing plate, and the two ends of the outer wall of the second sealing shell are respectively provided with a second integrally-formed reinforcing plate.
The natural gas pipeline repairing method of the quick natural gas pipeline repairing device comprises the following specific steps:
step one, covering the damaged part of the natural gas pipeline by a first sealing shell, and enabling the damaged part of the natural gas pipeline to be positioned in a first sealing ring of the first sealing shell; then, covering the back of the damaged part of the natural gas pipeline with the second sealing shell, and folding the first sealing shell and the second sealing shell; then, sleeving a stop washer into the bolt, penetrating the bolt through the through hole IV of the first sealing shell and the through hole V of the second sealing shell, and screwing the bolt into a nut welded on the through hole V; after the bolt is screwed tightly, bending one part of the stop claws of the stop washer to be attached to the first sealing shell, and bending the other part of the stop claws of the stop washer to be attached to the bolt; at the moment, the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are attached to the outer wall surface of the damaged natural gas pipeline, the third sealing ring and the fourth sealing ring seal the attaching positions of the longitudinal splitting surfaces of the first sealing shell and the two sides of the second sealing shell, and the sealing bulges on the fourth sealing ring are embedded into the grooves on the third sealing ring.
Assembling two fixing clamp assemblies at two ends of the first sealing shell and the second sealing shell; the mounting clip assembly process is as follows: the first hook ring of the first fixing clamp hooks the first groove of the first sealing shell, the second hook ring of the second fixing clamp hooks the second groove of the second sealing shell, and the bolt is sleeved with the stop washer, penetrates through the first through hole of the first fixing clamp and the third through hole of the second fixing clamp, and is screwed into the nut welded on the third through hole of the second fixing clamp; after the bolt is screwed, bending one part of the stop claws of the stop washer to the first attaching fixing clamp, and bending the other part of the stop claws of the stop washer to the attaching bolt; at the moment, the first anti-skid protrusions of the first fixing clamp and the second anti-skid protrusions of the second fixing clamp abut against the outer wall surface of the damaged natural gas pipeline.
Preferably, when the sealing device is disassembled, the two fixing clamp assemblies at the two ends of the first sealing shell and the second sealing shell are disassembled; the fixing clamp assembly dismantling process comprises the following steps: flattening all the locking claws of the upper locking washer of the first fixing clamp, screwing out the bolt on the first fixing clamp from the nut, and then taking down the first fixing clamp and the second fixing clamp; and after the fixing clamp assembly is removed, breaking off the locking claws of the upper stop washer of the first sealing shell to be flat, screwing out the bolt on the first sealing shell from the nut on the second sealing shell, and taking down the first sealing shell and the second sealing shell.
The invention has the following beneficial effects:
the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are attached to the outer wall surface of the damaged natural gas pipeline, the three layers of sealing are reliable in sealing, the third sealing ring and the fourth sealing ring seal the attaching positions of the first sealing shell and the longitudinal splitting surfaces on the two sides of the second sealing shell, and the sealing bulges on the fourth sealing ring are embedded into the grooves on the third sealing ring, so that a better sealing and leaking stoppage effect is achieved. Two fixing clamp assemblies are assembled at two ends of a first sealing shell and a second sealing shell; the first anti-slip bulge of the first fixing clamp and the second anti-slip bulge of the second fixing clamp abut against the outer wall surface of the damaged natural gas pipeline, the first sealing shell and the second sealing shell are prevented from deviating from the damaged position of the natural gas pipeline due to sliding, and the repairing device is firmer and more reliable.
Drawings
FIG. 1 is an exploded view of a mounting clip assembly and the bolts, stop washers and nuts thereon of the present invention;
FIG. 2 is an exploded view of an upper part of the containment vessel of the present invention;
FIG. 3 is an exploded view of the upper part of the second containment vessel of the present invention;
FIG. 4 is a schematic view of the rehabilitation device of the present invention in a loosened state, nested on a damaged natural gas pipeline;
FIG. 5 is a cross-sectional view of a prosthetic device of the present invention placed over a damaged natural gas pipeline;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
FIG. 7 is a view of the prosthetic device of the present invention in an unfastened condition;
fig. 8 is a partial enlarged view at B in fig. 7;
FIG. 9 is a view of the prosthetic device of the present invention locked to a damaged natural gas pipeline;
fig. 10 is a partial enlarged view at C in fig. 9.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a quick repairing device for a natural gas pipeline comprises a fixing clamp assembly, a bolt 2, a stop washer 3, a nut 4, a first sealing ring 7, a second sealing ring 8, a third sealing ring 9, a first sealing shell 10, a second rotating shaft 11, a fourth sealing ring 12 and a second sealing shell 13; the fixing clamp assembly comprises a first fixing clamp 1, a second fixing clamp 5 and a first rotating shaft 6; the first fixing clamp 1, the second fixing clamp 5, the first sealing shell 10 and the second sealing shell 13 are all in a semi-cylindrical shape; the fixation clamp subassembly is equipped with two. One side of the first fixing clamp 1 is provided with a first through hole 1-1, and the other side is provided with an integrally formed rotating arm 1-4; the end face of one end of the first fixing clip 1 is provided with a first integrally-formed hook ring 1-2; the inner surface of the first fixing clamp 1 is provided with a plurality of first anti-skid projection groups which are arranged at equal intervals along the axial direction; the first anti-skid bump group consists of a plurality of first anti-skid bumps 1-3 which are uniformly distributed along the circumferential direction; the stop washer 3 is provided with a through hole II 3-1 and a plurality of stop claws 3-2 which are integrally formed; one side of the second fixing clamp 5 is provided with a third through hole 5-1, and the other side is provided with a second rotating arm 5-4 which is integrally formed; the end face of one end of the second fixing clamp 5 is provided with a second integrally-formed hook ring 5-2; the inner surface of the second fixing clamp 5 is provided with a second anti-skid bump group which is arranged at equal intervals along the axial direction; the antiskid bulge group II consists of two antiskid bulges II 5-3; the aperture of the through hole III 5-1 is equal to that of the through hole I1-1, the structure of the hook ring II 5-2 is completely consistent with that of the hook ring I1-2, and the structure of the anti-skid protrusion II 5-3 is completely consistent with that of the anti-skid protrusion I1-3; the rotating shaft I6 is inserted into a center hole of the rotating arm I1-4 of the fixing clamp I1 and a center hole of the rotating arm II 5-4 of the fixing clamp II 5, and both ends of the rotating shaft I6 are riveted. Two ends of the outer wall of the first sealing shell 10 are provided with grooves one 10-1; the first groove 10-1 is matched with the first hook ring 1-2; one side of the first sealing shell 10 is provided with a through hole IV 10-3, and the other side is provided with an integrally formed rotating arm III 10-7; the inner wall of the first sealing shell 10 is provided with a first sealing groove 10-4, a second sealing groove 10-5 and a third sealing groove 10-6, the second sealing groove 10-5 is located on the periphery of the first sealing groove 10-4, and the third sealing groove 10-6 is located on the periphery of the second sealing groove 10-5; the first sealing groove 10-4 and the second sealing groove 10-5 are both composed of two first arc-shaped groove sections and two first axial straight line groove sections for connecting the two first arc-shaped groove sections; the third sealing groove 10-6 comprises an arc-shaped groove section II and two axial linear groove sections II which are connected with the two arc-shaped groove sections II; a first sealing ring 7 is embedded in the first sealing groove 10-4, a second sealing ring 8 is embedded in the second sealing groove 10-5, and a third sealing ring 9 is embedded in the third sealing groove 10-6; the first sealing ring 7 and the second sealing ring 8 are both composed of two first arc-shaped sealing sections and two first axial linear sealing sections for connecting the two first arc-shaped sealing sections; the third sealing ring 9 comprises a second arc-shaped sealing section and two second axial linear sealing sections for connecting the two second arc-shaped sealing sections; two ends of the outer wall of the second sealing shell 13 are provided with second grooves 13-3; the second groove 13-3 is matched with the second hook ring 5-2; one side of the second sealing shell 13 is provided with a fifth through hole 13-1, and the other side is provided with a fourth rotating arm 13-5 which is integrally formed; the aperture of the fifth through hole 13-1 is equal to that of the fourth through hole 10-3; a sealing groove IV 13-4 is formed in the inner wall of the sealing shell II 13; the structure of the seal groove IV 13-4 is completely consistent with that of the seal groove III 10-6; a sealing ring IV 12 is embedded in the sealing groove IV 13-4; the fourth sealing ring 12 also comprises a second arc-shaped sealing section and two second axial linear sealing sections for connecting the two second arc-shaped sealing sections; the second rotating shaft 11 is inserted into a center hole of the third rotating arm 10-7 of the first sealing shell 10 and a center hole of the fourth rotating arm 13-5 of the second sealing shell 13, and both ends of the second rotating shaft 11 are riveted.
As a preferred embodiment, the nuts 4 are welded on the through hole three 5-1 of the fixing clip two 5 and the through hole five 13-1 of the sealing shell two 13.
As a preferred embodiment, the end parts of the two ends of the arc-shaped groove section two of the third seal groove 10-6 and the fourth seal groove 13-4 are respectively provided with a radial groove section, the radial groove section and the axial linear groove section two of the third seal groove 10-6 are both arranged at the position of the longitudinal split surface of the first seal shell 10, and the radial groove section and the axial linear groove section two of the fourth seal groove 13-4 are both arranged at the position of the longitudinal split surface of the second seal shell 13; and the end parts of the two ends of the arc-shaped sealing section of the third sealing ring 9 and the end parts of the two ends of the arc-shaped sealing section of the fourth sealing ring 12 are provided with radial sealing sections.
As a preferred embodiment, the radial sealing section and the axial linear sealing section II of the sealing ring III 9 are both provided with grooves 9-1, and the radial sealing section and the groove 9-1 of the axial linear sealing section II on the same side are communicated; the radial sealing section and the axial linear sealing section II of the sealing ring IV 12 are both provided with sealing bulges 12-1, and the sealing bulges 12-1 are matched with the grooves 9-1.
As a preferred embodiment, the materials of the first sealing ring 7, the second sealing ring 8, the third sealing ring 9 and the fourth sealing ring 12 are all fluororubber.
As a preferred embodiment, both ends of the outer wall of the first sealing shell 10 are provided with a first integrally formed reinforcing plate 10-2, and both ends of the outer wall of the second sealing shell 13 are provided with a second integrally formed reinforcing plate 13-2.
The natural gas pipeline repairing method of the quick natural gas pipeline repairing device comprises the following specific steps:
step one, as shown in fig. 4, covering a damaged part of the natural gas pipeline by a first sealing shell 10, so that the damaged part of the natural gas pipeline is positioned in a first sealing ring 7 of the first sealing shell 10; then, covering the back of the damaged part of the natural gas pipeline with the second sealing shell 13, and folding the first sealing shell 10 and the second sealing shell 13; then, sleeving the stop washer 3 into the bolt 2, penetrating the bolt 2 through a through hole IV 10-3 of the first sealing shell 10 and a through hole V13-1 of the second sealing shell 13, and screwing the bolt into the nut 4 welded on the through hole V13-1; after the bolt 2 is screwed, bending a part of the locking claws 3-2 of the locking washer 3 to be attached to the first sealing shell 10, and bending the other part of the locking claws 3-2 of the locking washer 3 to be attached to the bolt 2, wherein the locking washer 3 can limit the relative rotation of the bolt 2 and the nut 4, so that the anti-loosening function is realized, as shown in fig. 9 and 10; at the moment, the first sealing ring 7, the second sealing ring 8, the third sealing ring 9 and the fourth sealing ring 12 are attached to the outer wall surface of the damaged natural gas pipeline, three layers of sealing are achieved, sealing is reliable, the third sealing ring 9 and the fourth sealing ring 12 seal the attaching positions of the first sealing shell 10 and the longitudinal splitting surfaces on the two sides of the second sealing shell 13, the sealing bulge 12-1 on the fourth sealing ring 12 is embedded into the groove 9-1 on the third sealing ring 9, and a better sealing and leaking stoppage effect is achieved, as shown in fig. 7 and 8.
Step two, assembling the two fixing clamp assemblies at two ends of the first sealing shell 10 and the second sealing shell 13; as shown in fig. 5 and 6, the fixing clip assembly is assembled as follows: a first hook ring 1-2 of a first fixing clamp 1 hooks a first groove 10-1 of a first sealing shell 10, a second hook ring 5-2 of a second fixing clamp 5 hooks a second groove 13-3 of a second sealing shell 13, and a bolt 2 is sleeved with a stop washer 3, penetrates through a first through hole 1-1 of the first fixing clamp 1 and a third through hole 5-1 of the second fixing clamp 5 and is screwed into a nut 4 welded on the third through hole 5-1 of the second fixing clamp 5; after the bolt 2 is screwed tightly, bending one part of the locking claws 3-2 of the locking washer 3 to the first attaching clamp 1, and bending the other part of the locking claws 3-2 of the locking washer 3 to the attaching bolt 2; at the moment, the first anti-skid protrusions 1-3 of the first fixing clamp 1 and the second anti-skid protrusions 5-3 of the second fixing clamp 5 abut against the outer wall surface of the damaged natural gas pipeline, and the first sealing shell 10 and the second sealing shell 13 are prevented from deviating from the damaged position of the natural gas pipeline due to sliding, so that the repairing device is firmer and more reliable.
As a preferred embodiment, when disassembling, the two fixing clip assemblies at the two ends of the first sealing shell 10 and the second sealing shell 13 are disassembled; the fixing clamp assembly dismantling process comprises the following steps: flattening all the locking claws 3-2 of the locking washer 3 on the first fixing clamp 1, screwing out the bolt 2 on the first fixing clamp 1 from the nut 4, and then taking down the first fixing clamp 1 and the second fixing clamp 5; and (3) after the fixing clamp assembly is removed, flattening all the stop claws 3-2 of the stop washer 3 on the first sealing shell 10, screwing the bolt 2 on the first sealing shell 10 out of the nut 4 on the second sealing shell 13, and removing the first sealing shell 10 and the second sealing shell 13.
Claims (8)
1. A quick repairing device for a natural gas pipeline comprises a bolt, a nut, a first sealing ring, a first sealing shell, a second rotating shaft and a second sealing shell; the method is characterized in that: the clamping device further comprises a fixing clamp assembly, a stop washer, a second sealing ring, a third sealing ring and a fourth sealing ring; the fixing clamp assembly comprises a first fixing clamp, a second fixing clamp and a first rotating shaft; the first fixing clamp, the second fixing clamp, the first sealing shell and the second sealing shell are all in a semi-cylindrical shape; two fixing clamp assemblies are arranged; one side of the first fixing clamp is provided with a first through hole, and the other side of the first fixing clamp is provided with an integrally formed first rotating arm; the end face of one end of the first fixing clamp is provided with a first integrally formed hook ring; the inner surface of the first fixing clamp is provided with a first anti-skid bump group which is axially arranged at equal intervals; the first anti-skid bump group consists of a plurality of first anti-skid bumps which are uniformly distributed along the circumferential direction; the stop washer is provided with a second through hole and a plurality of integrally formed stop claws; a third through hole is formed in one side of the second fixing clamp, and a second rotating arm which is integrally formed is arranged on the other side of the second fixing clamp; the end face of one end of the second fixing clamp is provided with a second integrally-formed hook ring; the inner surface of the second fixing clamp is provided with a second anti-skid bump group which is arranged at equal intervals along the axial direction; the antiskid lug group II consists of antiskid lugs II; the aperture of the through hole III is equal to that of the through hole I, the structure of the hook ring II is completely consistent with that of the hook ring I, and the structure of the antiskid lug II is completely consistent with that of the antiskid lug I; a center hole of the first rotating arm of the first fixing clamp is hinged with a center hole of the second rotating arm of the second fixing clamp through a first rotating shaft; two ends of the outer wall of the first sealing shell are provided with first grooves; the first groove is matched with the first hook ring; one side of the first sealing shell is provided with a fourth through hole, and the other side of the first sealing shell is provided with a third rotating arm which is integrally formed; the inner wall of the first sealing shell is provided with a first sealing groove, a second sealing groove and a third sealing groove, the second sealing groove is located on the periphery of the first sealing groove, and the third sealing groove is located on the periphery of the second sealing groove; the first sealing groove and the second sealing groove are both composed of two first arc-shaped groove sections and two first axial straight line groove sections for connecting the two first arc-shaped groove sections; the sealing groove III comprises an arc-shaped groove section II and two axial linear groove sections II which are connected with the two arc-shaped groove sections II; a first sealing ring is embedded in the first sealing groove, a second sealing ring is embedded in the second sealing groove, and a third sealing ring is embedded in the third sealing groove; the first sealing ring and the second sealing ring are both composed of two first arc-shaped sealing sections and two first axial linear sealing sections for connecting the two first arc-shaped sealing sections; the sealing ring III comprises an arc-shaped sealing section II and two axial linear sealing sections II which are connected with the two arc-shaped sealing sections II; two ends of the outer wall of the second sealing shell are both provided with a second groove; the second groove is matched with the second hook ring; one side of the sealing shell II is provided with a through hole V, and the other side of the sealing shell II is provided with an integrally formed rotating arm IV; the aperture of the fifth through hole is equal to that of the fourth through hole; a sealing groove IV is formed in the inner wall of the sealing shell II; the structure of the sealing groove IV is completely consistent with that of the sealing groove III; a sealing ring IV is embedded in the sealing groove IV; the fourth sealing ring also comprises a second arc-shaped sealing section and two second axial linear sealing sections for connecting the two second arc-shaped sealing sections; and a center hole of the rotating arm III of the first sealing shell is hinged with a center hole of the rotating arm IV of the second sealing shell through a rotating shaft II.
2. The quick natural gas pipeline repairing device according to claim 1, wherein: and nuts are welded on the third through hole of the second fixing clamp and the fifth through hole of the second sealing shell.
3. The quick natural gas pipeline repairing device according to claim 2, wherein: the two ends of the arc-shaped groove section II of the third sealing groove and the arc-shaped groove section II of the fourth sealing groove are respectively provided with a radial groove section, the radial groove section and the axial linear groove section II of the third sealing groove are respectively arranged at the longitudinal splitting surface position of the first sealing shell, and the radial groove section and the axial linear groove section II of the fourth sealing groove are respectively arranged at the longitudinal splitting surface position of the second sealing shell; and the end parts of two ends of the arc-shaped sealing section of the third sealing ring and the end parts of two ends of the arc-shaped sealing section of the fourth sealing ring are respectively provided with a radial sealing section.
4. The quick natural gas pipeline repairing device according to claim 3, wherein: the radial sealing section and the axial linear sealing section II of the sealing ring III are both provided with grooves, and the grooves of the radial sealing section and the axial linear sealing section II on the same side are communicated; and the radial sealing section and the axial linear sealing section II of the sealing ring IV are both provided with sealing bulges, and the sealing bulges are matched with the grooves.
5. A natural gas pipeline quick-repair device according to any one of claims 1 to 4, wherein: the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are all made of fluororubber.
6. A natural gas pipeline quick-repair device according to any one of claims 1 to 4, wherein: the two ends of the outer wall of the first sealing shell are provided with a first integrally-formed reinforcing plate, and the two ends of the outer wall of the second sealing shell are provided with a second integrally-formed reinforcing plate.
7. The natural gas pipeline repairing method of the natural gas pipeline rapid repairing device according to claim 4, characterized in that: the method comprises the following specific steps:
step one, covering the damaged part of the natural gas pipeline by a first sealing shell, and enabling the damaged part of the natural gas pipeline to be positioned in a first sealing ring of the first sealing shell; then, covering the back of the damaged part of the natural gas pipeline with the second sealing shell, and folding the first sealing shell and the second sealing shell; then, sleeving a stop washer into the bolt, penetrating the bolt through the through hole IV of the first sealing shell and the through hole V of the second sealing shell, and screwing the bolt into a nut welded on the through hole V; after the bolt is screwed tightly, bending one part of the stop claws of the stop washer to be attached to the first sealing shell, and bending the other part of the stop claws of the stop washer to be attached to the bolt; at the moment, the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are attached to the outer wall surface of the damaged natural gas pipeline, the third sealing ring and the fourth sealing ring seal the attaching positions of the first sealing shell and the longitudinal splitting surfaces on the two sides of the second sealing shell, and the sealing bulge on the fourth sealing ring is embedded into the groove on the third sealing ring;
assembling two fixing clamp assemblies at two ends of the first sealing shell and the second sealing shell; the mounting clip assembly process is as follows: the first hook ring of the first fixing clamp hooks the first groove of the first sealing shell, the second hook ring of the second fixing clamp hooks the second groove of the second sealing shell, and the bolt is sleeved with the stop washer, penetrates through the first through hole of the first fixing clamp and the third through hole of the second fixing clamp, and is screwed into the nut welded on the third through hole of the second fixing clamp; after the bolt is screwed, bending one part of the stop claws of the stop washer to the first attaching fixing clamp, and bending the other part of the stop claws of the stop washer to the attaching bolt; at the moment, the first anti-skid protrusions of the first fixing clamp and the second anti-skid protrusions of the second fixing clamp abut against the outer wall surface of the damaged natural gas pipeline.
8. The natural gas pipeline repairing method of the natural gas pipeline rapid repairing device according to claim 7, characterized in that: when the sealing shell is disassembled, the two fixing clamp assemblies at the two ends of the sealing shell I and the sealing shell II are disassembled; the fixing clamp assembly dismantling process comprises the following steps: flattening all the locking claws of the upper locking washer of the first fixing clamp, screwing out the bolt on the first fixing clamp from the nut, and then taking down the first fixing clamp and the second fixing clamp; and after the fixing clamp assembly is removed, breaking off the locking claws of the upper stop washer of the first sealing shell to be flat, screwing out the bolt on the first sealing shell from the nut on the second sealing shell, and taking down the first sealing shell and the second sealing shell.
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| CN202110656753.8A CN113418077A (en) | 2021-06-11 | 2021-06-11 | Rapid repairing device and repairing method for natural gas pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110656753.8A CN113418077A (en) | 2021-06-11 | 2021-06-11 | Rapid repairing device and repairing method for natural gas pipeline |
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| CN212107458U (en) * | 2020-02-20 | 2020-12-08 | 天津祥顺科技发展有限公司 | Fire hose clamp |
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| CN2597808Y (en) * | 2002-12-23 | 2004-01-07 | 罗国霖 | Sleeve with side open |
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Application publication date: 20210921 |