CN114393370A - Corrosion welding repair device and repair method for petroleum or natural gas conveying steel pipeline - Google Patents
Corrosion welding repair device and repair method for petroleum or natural gas conveying steel pipeline Download PDFInfo
- Publication number
- CN114393370A CN114393370A CN202210237746.9A CN202210237746A CN114393370A CN 114393370 A CN114393370 A CN 114393370A CN 202210237746 A CN202210237746 A CN 202210237746A CN 114393370 A CN114393370 A CN 114393370A
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- China
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- plate
- wire rope
- steel wire
- steel pipeline
- patch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The invention discloses a corrosion welding repair device and a corrosion welding repair method for an oil or natural gas transmission steel pipe line. The repairing device is adopted in the repairing method, the repairing plate is fixed on the steel pipe line through the anchor rod, the steel wire rope and the clamp, and the steel wire rope is fixed on the ground through the anchor rod, so that an anchoring point does not need to be found on the steel pipe line, and the operation of fixing the steel wire rope on the ground is easier. And the fixation is firm.
Description
Technical Field
The invention relates to a pipeline welding device, in particular to a device and a method for repairing corrosion welding of an oil or natural gas conveying steel pipeline.
Background
Chinese patent publication No. CN101579773A discloses an on-line repair welding process for oil pipelines. It adopts different welding methods and welding processes to carry out corrosion reinforcement on various pipeline materials and operating conditions; when repairing the patch plate, the material and the wall thickness of the patch plate are the same as those of the welded pipeline, a low-hydrogen welding rod is adopted, and the metal temperature of the welding seam between layers of each welding pass is lower than 150 ℃; directly performing repair welding on the point corrosion pit by using a low-hydrogen welding rod; if the repair welding is not finished at one time and the repair welding is required to be continued, the welding can be carried out after the welding seam metal is cooled to below 150 ℃ and the welding slag is removed.
The cylindrical panel of benefit board still addition and steel-pipe line looks adaptation, at present, during common benefit board welding, fix benefit board on the pipeline through the rigging, because oil or natural gas delivery steel-pipe line have thick, be difficult to set up the anchor point when fixed benefit board on the pipeline, it is big to the fixed operation degree of difficulty of benefit board.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device for repairing the corrosion welding of the oil or natural gas transmission steel pipeline is easy to fix the repair plate, and the repairing method adopting the repairing device is further provided.
In order to solve the technical problem, the device for repairing the corrosion welding of the oil or natural gas transmission steel pipeline comprises an anchor rod, a steel wire rope and a clamp, wherein two ends of the steel wire rope are connected to the steel wire rope, the clamp comprises a pressing plate, an elastic telescopic rod and two clamping plate mechanisms, the pressing plate is used for pressing the repairing plate outside a region to be repaired of the steel pipeline, the elastic telescopic rod is vertically fixed in the middle of the outer surface of the pressing plate, a through hole is formed in one end, away from the pressing plate, of the elastic telescopic rod, the steel wire rope penetrates into the through hole in a sliding mode, and the two clamping plate mechanisms are respectively located on two sides of the elastic telescopic rod and used for clamping two ends of the repairing plate in the circumferential direction.
Preferably, the clamping plate mechanism comprises a bidirectional screw rod, an inserting plate, a nut, a hook plate, a slide block and a pressing plate, the outer side surface of the pressing plate is provided with a slot, the inserting plate can be inserted into the slot in a plugging way, the middle part of the bidirectional screw rod is arranged in the inserting plate in a rotating and non-axial sliding manner, two ends of the bidirectional screw rod are respectively provided with a section of thread, the rotating directions of the two sections of thread are opposite, the two sections of thread of the bidirectional screw rod are respectively connected with a nut, the nuts are fixedly connected with hook plates, a slide block is slidably connected on the bidirectional screw rod and positioned at the outer side of each nut, the slide block is fixedly provided with a press block, a guide rod is connected between the slide block and the adjacent inserting plate and penetrates through the nut between the inserting plate and the slide block in a sliding manner, the guide rod is an elastic telescopic rod body, when the two hook plates of each clamping plate mechanism hook the bottoms of the two ends of the supplementing plate in the circumferential direction, the two pressing blocks of each clamping plate mechanism are respectively pressed on the end surfaces of the two ends of the supplementing plate in the circumferential direction, and the elastic telescopic rod body does not reach the maximum extension amount. After the steel wire rope is fixed, the clamping plate mechanism is easy to take down, so that the welding is convenient.
Preferably, the side surface of the nut adjacent to the adjacent sliding block is provided with a bulge. Thereby the direction is pushed to slide.
Preferably, the guide bar include the mobile jib body and second spring, be provided with the blind hole on the slider, the bottom of the both ends difference fixed connection bulk lever of second spring and blind hole, when the guide bar is in the maximum elongation, mobile jib body part branch is in the blind hole.
Preferably, the hook plate and the pressing plate are staggered in the axial direction of the patch plate.
Preferably, the hook plate is an L-shaped plate, one end hooked by the L-shaped plate is wedge-shaped, and the free end of the hooking surface inclines towards the direction adjacent to the axis of the complementary plate. The hook plate can not generate large vibration when the patch plate is withdrawn.
Preferably, the elastic telescopic rod comprises a connecting block, a telescopic rod and a first spring, the first spring is sleeved on the telescopic rod, two ends of the telescopic rod are fixed with the connecting block and the pressing plate respectively, two axial through holes perpendicular to the plate supplementing plate are formed in the connecting block, and one steel wire rope is connected to each through hole.
Preferably, the two steel wire ropes are arranged in parallel, and each of the two steel wire ropes is connected with an anchor rod.
The invention relates to a corrosion welding repair method for an oil or natural gas transmission steel pipeline, which adopts any one corrosion welding repair device for the oil or natural gas transmission steel pipeline, and comprises the following steps:
(1) clamping the patch board through a clamp, and penetrating a steel wire rope into a through hole of the clamp; (2) fixing the anchor rod on the ground, and fixing one end of the steel wire rope on the anchor rod; (3) when the area to be repaired is completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope crosses the steel pipeline and is tensioned and fixed on the anchor rod; when the area to be repaired is not completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope is wound by one circle across the steel pipeline and is tensioned and fixed on the anchor rod; (4) taking down the clamping plate mechanism and fastening the steel wire rope again; (5) and (6) welding the patch plate.
The invention relates to a corrosion welding repair method for an oil or natural gas transmission steel pipeline, which adopts the corrosion welding repair device for the oil or natural gas transmission steel pipeline and comprises the following steps: (1) clamping the patch plate by a clamp, enabling the non-free end of the hooking surface to support the bottom surface of the patch plate, pressing the pressing plate on the end surface of the patch plate, and penetrating the steel wire rope into the through hole of the clamp; (2) fixing the anchor rod on the ground, and fixing one end of the steel wire rope on the anchor rod; (3) when the area to be repaired is completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope crosses the steel pipeline and is tensioned and fixed on the anchor rod; when the area to be repaired is not completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope is wound by one circle across the steel pipeline and is tensioned and fixed on the anchor rod; (4) rotating the bidirectional screw, withdrawing the hook plate from the bottom surface of the patch plate, pressing the patch plate to be attached to the steel pipe line under the action of the elastic telescopic rod, continuously rotating the bidirectional screw to enable the nut to continuously move towards the adjacent slide block until the slide block is pushed to move for a certain distance, pulling out the insert block from the pressing plate, and taking away the clamping plate mechanism; the steel wire rope is fastened again; (5) and (6) welding the patch plate.
The invention has the beneficial effects that: the patch board is fixed on the steel pipe line through the anchor rod, the steel wire rope and the clamp, and the steel wire rope is fixed on the ground through the anchor rod, so that an anchoring point does not need to be found on the steel pipe line, and the operation of fixing the steel wire rope on the ground is easier. And the fixation is firm.
Drawings
FIG. 1 is a schematic view of a state of fixing a patch plate according to a first welding method of the present invention;
FIG. 2 is a schematic view showing a state of fixing a patch plate according to a second welding method of the present invention;
FIG. 3 is a schematic perspective view of the prosthetic device of the present invention;
FIG. 4 is a schematic front view of the structure of FIG. 3;
in the figure: 1. the steel pipe comprises an anchor rod, 2 parts of a steel wire rope, 3 parts of a clamp, 4 parts of a steel pipe line, 5 parts of a ground, 6 parts of a complementary plate, 3-1 parts of a pressing plate, 3-2 parts of a hook plate, 3-3 parts of a nut, 3-4 parts of a bidirectional screw rod, 3-5 parts of a pressing block, 3-6 parts of a sliding block, 3-7 parts of a protrusion, 3-8 parts of a guide rod, 3-9 parts of an inserting plate, 3-10 parts of a first spring, 3-11 parts of a through hole, 3-12 parts of a connecting block, 3-13 parts of a telescopic rod, 3-14 parts of a hand wheel.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and all directional indicators (such as upper, lower, left, right, front and rear … …) in the present invention are only used for explaining the relative position relationship, motion condition, etc. of the components in a certain posture (as shown in the drawings), and if the certain posture is changed, the directional indicator is changed accordingly.
The device for repairing corrosion welding of the petroleum or natural gas transmission steel pipeline comprises an anchor rod 1, a steel wire rope 2 and a clamp 3, wherein two ends of the steel wire rope 2 are connected to the anchor rod 1, the clamp 3 comprises a pressing plate 3-1, an elastic telescopic rod and two sets of clamping plate mechanisms, the pressing plate 3-1 is used for pressing a patch 6 outside a region to be repaired of the steel pipeline 4, the elastic telescopic rod is vertically fixed in the middle of the outer surface of the pressing plate 3-1, a through hole 3-11 is formed in one end, far away from the pressing plate 3-1, of the elastic telescopic rod, the steel wire rope 2 penetrates through the through hole 3-11 in a sliding mode, and the two sets of clamping plate mechanisms are respectively located on two sides of the elastic telescopic rod and used for clamping two ends of the patch 6 in the circumferential direction. The patch 6 is a partial cylindrical surface with the inner surface radius the same as the outer surface radius of the steel pipeline.
The elastic telescopic rod comprises connecting blocks 3-12, telescopic rods 3-13 and first springs 3-10, the first springs 10 are sleeved on the telescopic rods 3-13, two ends of the telescopic rods 3-13 are respectively fixed with the connecting blocks 3-12 and the pressing plate 3-1, two through holes 3-11 perpendicular to the axial direction of the complementary plate 6 are formed in the connecting blocks 3-12, and each through hole 3-11 is connected with a steel wire rope 2. The two steel wire ropes 2 are arranged in parallel, and the two steel wire ropes 2 are respectively connected with an anchor rod 1.
The clamping plate mechanism comprises a bidirectional screw rod 3-4, an inserting plate 3-9, a nut 3-3, a hook plate 3-2, a sliding block 3-6 and a pressing plate 3-1, wherein a slot is formed in the outer side surface of the pressing plate 3-1, the inserting plate 3-9 can be inserted into the slot in a plugging mode, the middle of the bidirectional screw rod 3-4 is arranged in the inserting plate 3-9 in a rotating mode and does not slide axially, two ends of the bidirectional screw rod 3-4 are respectively provided with a section of thread, the rotating directions of the two sections of threads are opposite, one end of the bidirectional screw rod 3-4 is provided with a hand wheel 3-14, and an electric mechanism can also be arranged to drive the bidirectional screw rod to rotate. Two sections of threads of the bidirectional screw 3-4 are respectively connected with a nut 3-3, the nut 3-3 is fixedly connected with a hook plate 3-2, the hook plate 3-2 is an L-shaped plate, one end hooked by the L-shaped plate is wedge-shaped, and the free end of a hooking surface inclines towards the direction close to the axis of the complementary plate 6.
The bidirectional screw 3-4 is connected with a sliding block 3-6 at the outer side of each nut 3-3 in a sliding mode, the sliding block 3-6 is fixedly provided with a pressing block 3-5, a guide rod 3-8 is connected between the sliding block 3-6 and an adjacent inserting plate 3-9, the guide rod 3-8 is an elastic telescopic rod body, the guide rod 3-8 comprises a main rod body and a second spring, a blind hole is formed in the sliding block 3-6, two ends of the second spring are fixedly connected with the main rod body and the bottom of the blind hole respectively, when the guide rod is in the maximum extension amount, the main rod body is located in the blind hole, and therefore the guide rod 3-8 can be prevented from being bent or bent, and the guiding effect of the guide rod 3-8 is guaranteed. The guide rods 3-8 penetrate through the inserting plates 3-9 and the nuts 3-3 between the sliding blocks 3-6 in a sliding mode, when the two hook plates 3-2 of each clamping plate mechanism hook the bottoms of the two ends of the complementary plate 6 in the circumferential direction, the two pressing blocks 3-5 of each clamping plate mechanism are respectively pressed on the end faces of the two ends of the complementary plate 6 in the circumferential direction, and the elastic telescopic rod bodies of the guide rods 3-8 do not reach the maximum extension amount. The side of the nut 3-3 adjacent to the adjacent slide block 3-6 is provided with a projection 3-7. The hook plate 3-2 and the pressing plate 3-5 are staggered in the axial direction of the patch plate 6.
The method for repairing the corrosion welding of the oil or natural gas transmission steel pipeline adopts the corrosion welding repair device of the oil or natural gas transmission steel pipeline shown in figures 1-4, and comprises the following steps: (1) clamping the patch 6 through a clamp, enabling the non-free end of the hooking surface to support the bottom surface of the patch 6, pressing the pressing plate 3-1 on the end surface of the patch 6, and penetrating the steel wire rope 2 into a through hole 3-11 of the clamp; (2) fixing an anchor rod 1 on the ground, and fixing one end of a steel wire rope 2 on the anchor rod 1; (3) when the area to be repaired is completely on the upper semi-circular arc surface of the steel pipeline (as shown in figure 1), the patch 6 is sent to the area to be welded, and the steel wire rope 2 crosses the steel pipeline 4 and is tensioned and fixed on the anchor rod 1; when the area to be repaired is not completely on the upper semi-circular arc surface of the steel pipeline 4 (as shown in fig. 2), the repairing plate 6 is sent to the area to be welded, the steel wire rope 2 strides over the steel pipeline 4 to be wound for a circle and is tensioned and fixed on the anchor rod 1, and the top surfaces of the connecting blocks 3-12 are provided with grooves for conveniently winding the steel wire rope 2; (4) rotating the bidirectional screw 3-4, withdrawing the hook plate 3-2 from the bottom surface of the patch plate 6, pressing and attaching the patch plate 6 to the steel pipeline 4 under the action of the elastic telescopic rod, continuously rotating the bidirectional screw 3-4 to enable the nut 3-3 to continuously move towards the adjacent slide block 3-6 until the slide block 3-6 is pushed to move for a certain distance, keeping the position of the patch plate 6 before the slide block 3-6 moves, preventing the patch plate 6 from being driven by the hook plate 3-2 to leave the original position, then pulling out the insert block 3-9 from the pressing plate 3-1, and taking away the clamping plate mechanism; the steel wire rope is fastened again, so that the safety can be improved; (5) welding is mended the board, is provided with the spout that 6 appearances of benefit board are similar on the clamp plate surface, and the spout can be used to install welder's support, and welder's support slides a week in the spout, and welder follows the limit of support and removes the limit welding, and when neighbouring wire rope, can take off the welding rod support, stride the wire rope after and install again in the spout to can conveniently weld. The chute and the welding gun support structure can be realized according to the prior art, and the corresponding function can be achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an oil or natural gas conveying steel pipeline corrodes welding prosthetic devices which characterized in that: the steel wire rope repairing clamp comprises an anchor rod, a steel wire rope and a clamp, wherein two ends of the steel wire rope are connected to the steel wire rope, the clamp comprises a pressing plate, an elastic telescopic rod and two sets of clamping plate mechanisms, the pressing plate is used for pressing a repairing plate outside a to-be-repaired area of a steel wire line, the elastic telescopic rod is vertically fixed to the middle of the outer surface of the pressing plate, a through hole is formed in one end, away from the pressing plate, of the elastic telescopic rod, the steel wire rope is inserted into the through hole in a sliding mode, and the two sets of clamping plate mechanisms are located on two sides of the elastic telescopic rod respectively and used for clamping two ends of the repairing plate in the circumferential direction.
2. The oil or gas transmission steel pipeline corrosion welding repair device according to claim 1, characterized in that: the clamping plate mechanism comprises a bidirectional screw rod, an inserting plate, a nut, a hook plate, a slide block and a pressing plate, wherein the outer side surface of the pressing plate is provided with an inserting groove, the inserting plate can be inserted into the inserting groove in an inserting way, the middle part of the bidirectional screw rod is arranged in the inserting plate in a rotating and non-axial sliding manner, two ends of the bidirectional screw rod are respectively provided with a section of thread, the rotating directions of the two sections of thread are opposite, the two sections of thread of the bidirectional screw rod are respectively connected with a nut, the nuts are fixedly connected with hook plates, a slide block is slidably connected on the bidirectional screw rod and positioned at the outer side of each nut, the slide block is fixedly provided with a press block, a guide rod is connected between the slide block and the adjacent inserting plate and penetrates through the nut between the inserting plate and the slide block in a sliding manner, the guide rod is an elastic telescopic rod body, when the two hook plates of each clamping plate mechanism hook the bottoms of the two ends of the supplementing plate in the circumferential direction, the two pressing blocks of each clamping plate mechanism are respectively pressed on the end surfaces of the two ends of the supplementing plate in the circumferential direction, and the elastic telescopic rod body does not reach the maximum extension amount.
3. The oil or gas transmission steel pipeline corrosion welding repair device according to claim 2, characterized in that: and the side surface of the nut adjacent to the adjacent sliding block is provided with a bulge.
4. The oil or gas transmission steel pipeline corrosion welding repair device according to claim 2, characterized in that: the guide bar include the mobile jib body and second spring, be provided with the blind hole on the slider, the bottom of main part pole and blind hole of fixed connection respectively at the both ends of second spring, when the guide bar is in the maximum extension, mobile jib body part branch is in the blind hole.
5. The oil or gas transmission steel pipeline corrosion welding repair device according to claim 2, characterized in that: the hook plate and the pressing plate are staggered in the axial direction of the patch plate.
6. The oil or gas transmission steel pipeline corrosion welding repair device according to claim 2, characterized in that: the hook plate is an L-shaped plate, one end hooked and held by the L-shaped plate is wedge-shaped, and the free end of the hooking and holding surface inclines towards the direction of the axis of the adjacent supplementary plate.
7. The oil or gas transmission steel pipeline corrosion welding repair device according to claim 2, characterized in that: the elastic telescopic rod comprises a connecting block, a telescopic rod and a first spring, the first spring is sleeved on the telescopic rod, two ends of the telescopic rod are fixed with the connecting block and the pressing plate respectively, two through holes perpendicular to the axial direction of the plate supplementing are formed in the connecting block, and one steel wire rope is connected to each through hole.
8. The oil or gas transmission steel pipeline corrosion welding repair device according to claim 2, characterized in that: the two steel wire ropes are arranged in parallel and are respectively connected with an anchor rod.
9. The method for repairing the corrosion welding of the petroleum or natural gas transmission steel pipeline is characterized by comprising the following steps: the oil or gas transmission steel pipeline corrosion welding repair apparatus according to any one of claims 1 to 8, which is used in the repair method, comprising the steps of: (1) clamping the patch board through a clamp, and penetrating a steel wire rope into a through hole of the clamp; (2) fixing the anchor rod on the ground, and fixing one end of the steel wire rope on the anchor rod; (3) when the area to be repaired is completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope crosses the steel pipeline and is tensioned and fixed on the anchor rod; when the area to be repaired is not completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope is wound by one circle across the steel pipeline and is tensioned and fixed on the anchor rod; (4) taking down the clamping plate mechanism and fastening the steel wire rope again; (5) and (6) welding the patch plate.
10. The method for repairing the corrosion welding of the petroleum or natural gas transmission steel pipeline is characterized by comprising the following steps: the oil or gas transmission steel pipeline corrosion welding repair device according to claim 6 is adopted, and the repair method comprises the following steps: (1) clamping the patch plate by a clamp, enabling the non-free end of the hooking surface to support the bottom surface of the patch plate, pressing the pressing plate on the end surface of the patch plate, and penetrating the steel wire rope into the through hole of the clamp; (2) fixing the anchor rod on the ground, and fixing one end of the steel wire rope on the anchor rod; (3) when the area to be repaired is completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope crosses the steel pipeline and is tensioned and fixed on the anchor rod; when the area to be repaired is not completely on the upper semi-circular arc surface of the steel pipeline, the patch plate is sent to the area to be welded, and the steel wire rope is wound by one circle across the steel pipeline and is tensioned and fixed on the anchor rod; (4) rotating the bidirectional screw, withdrawing the hook plate from the bottom surface of the patch plate, pressing the patch plate to be attached to the steel pipe line under the action of the elastic telescopic rod, continuously rotating the bidirectional screw to enable the nut to continuously move towards the adjacent slide block until the slide block is pushed to move for a certain distance, pulling out the insert block from the pressing plate, and taking away the clamping plate mechanism; the steel wire rope is fastened again; (5) and (6) welding the patch plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237746.9A CN114393370B (en) | 2022-03-10 | 2022-03-10 | Corrosion welding repair device and repair method for petroleum or natural gas conveying steel pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210237746.9A CN114393370B (en) | 2022-03-10 | 2022-03-10 | Corrosion welding repair device and repair method for petroleum or natural gas conveying steel pipeline |
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| Publication Number | Publication Date |
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| CN114393370A true CN114393370A (en) | 2022-04-26 |
| CN114393370B CN114393370B (en) | 2023-06-20 |
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| CN202210237746.9A Active CN114393370B (en) | 2022-03-10 | 2022-03-10 | Corrosion welding repair device and repair method for petroleum or natural gas conveying steel pipeline |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123451A (en) * | 1989-12-28 | 1992-06-23 | Interprovincial Pipeline Company | Pipeline repair sleeve assembly |
| GB201005347D0 (en) * | 2010-03-30 | 2010-05-12 | Smith Martyn J | Pipe sealing |
| CN206988686U (en) * | 2017-07-26 | 2018-02-09 | 漆翔 | Oil pipeline Rapid leakage repairing device with pressure |
| CN110886928A (en) * | 2019-12-12 | 2020-03-17 | 周强 | Auxiliary device for welding and repairing large pipeline |
| CN111828772A (en) * | 2020-08-13 | 2020-10-27 | 天津鸿浩立原科技有限公司 | Ship pipeline plugging device |
| CN211821287U (en) * | 2019-11-30 | 2020-10-30 | 安徽惠农建设集团有限公司 | Interim trapping devices of city water supply pipe |
| CN211902050U (en) * | 2020-04-09 | 2020-11-10 | 祝树军 | Device is prevented leaking in natural gas line maintenance |
-
2022
- 2022-03-10 CN CN202210237746.9A patent/CN114393370B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123451A (en) * | 1989-12-28 | 1992-06-23 | Interprovincial Pipeline Company | Pipeline repair sleeve assembly |
| GB201005347D0 (en) * | 2010-03-30 | 2010-05-12 | Smith Martyn J | Pipe sealing |
| CN206988686U (en) * | 2017-07-26 | 2018-02-09 | 漆翔 | Oil pipeline Rapid leakage repairing device with pressure |
| CN211821287U (en) * | 2019-11-30 | 2020-10-30 | 安徽惠农建设集团有限公司 | Interim trapping devices of city water supply pipe |
| CN110886928A (en) * | 2019-12-12 | 2020-03-17 | 周强 | Auxiliary device for welding and repairing large pipeline |
| CN211902050U (en) * | 2020-04-09 | 2020-11-10 | 祝树军 | Device is prevented leaking in natural gas line maintenance |
| CN111828772A (en) * | 2020-08-13 | 2020-10-27 | 天津鸿浩立原科技有限公司 | Ship pipeline plugging device |
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| CN114393370B (en) | 2023-06-20 |
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