CN107237956B - Removing pipe perforation points auxiliary device of anticorrosive coating - Google Patents
Removing pipe perforation points auxiliary device of anticorrosive coating Download PDFInfo
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- CN107237956B CN107237956B CN201610181814.9A CN201610181814A CN107237956B CN 107237956 B CN107237956 B CN 107237956B CN 201610181814 A CN201610181814 A CN 201610181814A CN 107237956 B CN107237956 B CN 107237956B
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- sealing
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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
- F16L55/18—Appliances for use in repairing pipes
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses an auxiliary device for removing an anticorrosive coating of a pipeline perforation point, and belongs to the technical field of oil gas storage and transportation safety operation. The auxiliary device comprises a containing cylinder for containing a pipeline perforation point, at least one jack support and a sealing device for isolating the pipeline perforation point, wherein the containing cylinder covers the upper part of the pipeline perforation point, all jack supports in the at least one jack support are fixedly connected with the side face of the containing cylinder, and the sealing device is connected with the bottom end of the containing cylinder. The auxiliary device for removing the anti-corrosion layer of the pipeline perforation point can solve the problems of great economic loss, great potential safety hazard and the like caused by a series of methods of stopping transportation by depressurization, temporarily plugging by nailing wedges, mechanically removing the anti-corrosion layer and the like after the original oil gas pipeline is perforated; the leakage point can be temporarily covered under the condition of not reducing pressure, and meanwhile, the safety can be greatly improved due to the fact that rubber is adopted for isolating and sealing at the perforation point.
Description
Technical Field
The invention relates to the technical field of oil gas storage and transportation safety operation, in particular to an auxiliary device for removing an anticorrosive coating of a pipeline perforation point.
Background
In the long-time operation process of the oil and gas pipeline, the problem of sudden oil and gas pipeline perforation inevitably occurs. For the sudden perforation problem of the oil and gas pipeline, a common solution is to weld a plugging patch at the perforation point of the oil and gas pipeline, but the welding of the plugging patch can only be performed under the condition that the anticorrosive coating around the leak point (namely the perforation point) is removed. The method for removing the anti-corrosion layer is commonly used in the prior art, namely, after the depressurization and transportation stopping treatment is carried out on the oil and gas pipeline, the leakage point is temporarily plugged by adopting a nail wedge, and finally, the anti-corrosion layer around the leakage point is removed by adopting a mechanical anti-corrosion layer removing mode.
The method for removing the anticorrosive coating needs to decompress and stop conveying the oil and gas pipeline, so that a great amount of economic loss is caused to the pipeline transportation of the oil and gas; moreover, the nail wedge is adopted to temporarily block the perforation point, so that larger potential safety hazard is easily caused, and the generated blocking effect is very poor.
Disclosure of Invention
In order to solve at least one of the above problems and disadvantages of the prior art, the present invention provides an auxiliary device for removing a corrosion-resistant layer at a perforated point of a pipe. The technical scheme is as follows:
it is an object of the present invention to provide an auxiliary device for removing corrosion protection from the perforated point of a pipe.
According to one aspect of the invention, there is provided an auxiliary device for removing an anti-corrosion layer of a pipeline perforation point, wherein the auxiliary device comprises a containing cylinder for containing the pipeline perforation point, at least one jack support and a sealing device for isolating the pipeline perforation point, the containing cylinder covers over the pipeline perforation point, all jack supports in the at least one jack support are fixedly connected with the side surface of the containing cylinder, and the sealing device is connected with the bottom end of the containing cylinder.
Specifically, hold the section of thick bamboo and include external drainage nipple, trompil head and hold the main part, the both ends of trompil head respectively with external drainage nipple and hold the one end of main part and be connected, hold the other end of main part with sealing device connects.
Further, the shape of the external drainage nipple and the shape of the accommodating main body are both cylindrical, the inner cavity of the accommodating main body penetrates through the accommodating main body along the longitudinal direction, and a chamfer is arranged at one end of the accommodating main body, which is connected with the opening seal head.
Further, the cross section shape of the open pore end socket is set to be arched, a first opening used for being communicated with the external drainage nipple is arranged at the center of the open pore end socket, a second opening is arranged at the periphery of the open pore end socket, and the second opening faces the inner cavity of the accommodating main body.
Further, the shapes of the first opening and the second opening are round, the first opening and the second opening are opposite to each other, the diameter of the first opening is smaller than or equal to the diameter of the external drainage nipple, and the diameter of the second opening is smaller than or equal to the inner diameter of the accommodating main body.
Further, threads are arranged on the outer surface of one end, far away from the open-pore seal head, of the external drainage nipple.
Further, the thread is connected with a screw cap.
Further, the screw thread is connected with one end of a valve for controlling the drainage quantity, and the other end of the valve is connected with a rubber hose for draining leaked oil gas.
Specifically, sealing device includes spacing seal assembly and sealing rubber that are connected each other, spacing seal assembly includes first spacing sealing block and the spacing sealing block of second that cooperates each other, first spacing sealing block cover is established in the inner chamber of the spacing sealing block of second and form and be used for holding sealing rubber's annular seal chamber.
Further, the first limit sealing block and the second limit sealing block are both cylindrical, an annular flange protrudes outwards in the radial direction at the top end of the first limit sealing block, and correspondingly, the top end of the second limit sealing block protrudes inwards in the radial direction to form an annular protruding part.
Specifically, the annular flange and the annular projection cooperate with each other to form an annular limiting groove for insertion into the bottom end of the containing body.
Further, the outer side of the annular flange and the inner wall of the accommodating body are in clearance fit, the inner side of the annular protruding part and the outer surface of the accommodating body are in clearance fit, and the inner cavity of the first limit sealing block and the inner cavity of the accommodating body are communicated with each other.
Further, the shape of the sealing rubber is set to a cylindrical shape, and the sealing rubber portion is accommodated in the annular seal chamber.
Specifically, sealing rubber's one end that is close to spacing seal assembly is provided with and is used for inserting the annular groove that holds the bottom of main part, the annular groove is followed sealing rubber's circumferencial direction sets up, sealing rubber's inner chamber respectively with spacing seal assembly's inner chamber with hold the inner chamber of main part intercommunication each other.
Specifically, the shape of one end of sealing rubber far away from spacing seal assembly sets up to with the arc shape saddle shape that matches of pipeline's radian in pipeline perforation point department, sealing rubber's inner wall with the surface clearance fit of first spacing sealing block, sealing rubber's surface with the inner wall clearance fit of second spacing sealing block.
Further, all jack supports in the at least one jack support are fixedly connected with the outer surface of the accommodating main body, and the upper surfaces of all jack supports are provided with anti-falling limiting grooves matched with the bottoms of the jacks.
Further, the anti-falling limit groove is arranged on the upper surface of the jack bracket along the direction vertical to the longitudinal direction,
the jack support with hold the one end that the main part is connected is provided with the side direction ring mouth, the shape of side direction ring mouth sets up to the arc, the radian of side direction ring mouth with hold the radian of the surface of main part and cooperate.
Specifically, the inner surface of the lateral ring is provided with an inclined plane, and at least one reinforcing rib is arranged on the lower surface of the jack support, and all reinforcing ribs in the at least one reinforcing rib extend towards the direction deviating from the lower surface along the height direction of the jack support.
Further, the at least one jack stand includes a first jack stand and a second jack stand, the first jack stand and the second jack stand being disposed at opposite sides of the accommodating main body, and the first and second jack stands being disposed at a middle portion of the accommodating main body.
The technical scheme provided by the invention has the beneficial effects that:
(1) The auxiliary device for removing the anti-corrosion layer of the pipeline perforation point can solve the problems of great economic loss, great potential safety hazard and the like caused by a series of methods of stopping transportation by depressurization, temporarily plugging by nailing wedges, mechanically removing the anti-corrosion layer and the like after the original oil gas pipeline is perforated;
(2) The auxiliary device for removing the anti-corrosion layer of the pipeline perforation point provided by the invention is designed based on the rubber compression sealing auxiliary device to create conditions for removing the anti-corrosion layer, the device can temporarily cover and buckle the leakage point under the condition of not reducing pressure, and meanwhile, the leakage blocking effect is far better than that of a wooden wedge due to the adoption of rubber for isolation sealing at the perforation point, so that the safety can be greatly improved;
(3) According to the auxiliary device for removing the anti-corrosion layer of the pipeline perforation point, the valve and the rubber hose are additionally arranged on the external drainage nipple, so that an oil gas medium at the pipeline perforation point is drained to the far end, the oil gas concentration of the perforation point is temporarily discharged, and a good environment with low oil gas concentration is created for plugging and repairing;
(4) The auxiliary device for removing the anti-corrosion layer of the pipeline perforation point can be repeatedly used, and the pollution of materials such as the waste nailing and wood wedge and the like to the environment after construction is avoided, so that the auxiliary device is safer and more environment-friendly.
Drawings
FIG. 1 is a schematic perspective view of an auxiliary device for removing a corrosion protection layer at a perforated point of a pipe according to an embodiment of the present invention;
FIG. 2 is a schematic view of the auxiliary device for removing the corrosion protection layer at the perforation point of the pipeline shown in FIG. 1;
FIG. 3 is a schematic view of the external drainage nipple of FIG. 1 with a threaded cap;
fig. 4 is a schematic structural view of the accommodating body shown in fig. 1;
FIG. 5a is a schematic illustration of the check seal assembly of FIG. 2;
FIG. 5b is a top view of the check seal assembly shown in FIG. 5 a;
FIG. 5c is a cross-sectional view taken along the A-A cut line shown in FIG. 5 b;
FIG. 6a is a schematic view of the structure of the sealing rubber shown in FIG. 2;
FIG. 6b is a top view of the sealing rubber shown in FIG. 6 a;
FIG. 6c is a cross-sectional view taken along the B-B cut line shown in FIG. 6B;
fig. 7 is a jack as shown in fig. 1 a schematic structural view of the top bracket;
fig. 8 is a schematic structural view of an auxiliary device for removing the corrosion protection layer at the pipe perforation point, which is arranged at the pipe perforation.
The auxiliary device for removing the pipeline perforation point anticorrosive coating comprises a 10 accommodating cylinder, an 11 external drainage nipple, a 111 screw cap, a 12 perforated sealing head, a 121 first opening, a 122 second opening, a 13 accommodating main body, a 20 jack support, a 21 anti-drop limiting groove, a 22 lateral annular opening, a 221 inclined plane, a 23 reinforcing rib, a 25 first jack support, a 26 second jack support, a 30 sealing device, a 31 limiting sealing component, a 311 first limiting sealing block, a 312 second limiting sealing block, a 313 annular sealing cavity, a 314 annular limiting groove, a 315 annular flange, a 316 annular protruding part, 32 sealing rubber, a 321 annular groove, a 322 arc saddle shape, a 210 jack and a 220 steel chain.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, an auxiliary device 100 for removing a corrosion protection layer of a pipe perforation point is shown according to one embodiment of the present invention. The auxiliary device 100 comprises a receiving cylinder 10 for receiving a pipe perforation point, at least one jack mount 20, and a sealing device 30 for isolating the pipe perforation point, the receiving cylinder 10 being covered over the pipe perforation point, all jack mounts 20 in the at least one jack mount 20 being fixedly connected to a side of the receiving cylinder 10, and the sealing device 30 being connected to a bottom end of the receiving cylinder 10.
As shown in fig. 2, the containment drum 10 includes an external drainage nipple 11, an open head 12, and a containment body 13. Two ends of the open-pore seal head 12 are respectively connected with the external drainage nipple 11 and one end of the accommodating main body 13, and the other end of the accommodating main body 13 is connected with the sealing device 30. As shown in connection with fig. 1 to 3, the external drainage nipple 11 is at the uppermost end of the auxiliary device 100 for removing the corrosion-resistant layer at the perforation point of the pipeline, and the external drainage nipple 11 is a hollow nipple.
In one example of the present invention, the external drainage nipple 11 is shaped as a cylinder, and the inner cavity of the external drainage nipple 11 communicates with the bore seal head 12 and the inner cavity of the accommodating body 13. As shown in fig. 3, a thread is provided on the outer surface of the end of the external drainage nipple 11 remote from the bore head 12, which thread can be connected to a screw cap 111. In use, the screw thread on the external drainage nipple 11 can screw the cap 111 to form a sealed whole, the screw thread can also be externally connected with a valve (not shown) for controlling drainage quantity and a rubber hose (not shown) for draining leaked oil gas, the screw thread is connected with one end of the valve in use, and then the other end of the valve is connected with the rubber hose, so that long-distance drainage of oil gas medium can be realized.
As shown in fig. 1 and fig. 2, the opening sealing head 12 is directly formed by opening a hole at the center on the basis of the finished pressure sealing head, and no reinforcing measure is separately taken, but weldability with the external drainage nipple 11 must be ensured, so that the lower end of the external drainage nipple 11 can be welded and connected with the opening sealing head 12. The open-pore sealing head 12 is a component formed by the first opening 121 formed at the connection part of the finished sealing head and the external drainage nipple 11, so that the formed first opening 121 affects the integrity and the reliability of the strength of the finished sealing head. That is, when the auxiliary device 100 is covered on the perforated point, the pressure in the auxiliary device 100 is continuously increased because the oil gas at the perforated point is entirely guided into the accommodating body 13; when the pressure is increased to a certain extent, the strength around the first opening 121 is lowered due to the opening of the first opening 121, and there is a possibility that a damage such as a burst may occur. In order to avoid the damage problems such as explosion at the first opening, the lower end of the external drainage nipple 11 and the first opening 121 of the opening seal head 12 are welded into a whole, and as the lower end of the external drainage nipple 11 is thick, the external drainage nipple 11 can bear larger pressure, the thickness of the pipe wall around the first opening 121 is increased, and meanwhile, the redundant thickness of the external drainage nipple 11 can also play a role in supplementing the strength of the first opening 121 of the opening seal head 12 in reverse, so that the possibility of explosion damage caused by continuous boosting is reduced. Therefore, the external drainage nipple 11 not only meets the pressure-bearing requirement of the pressure vessel, but also has a self-perforating reinforcing effect, and does not need to make reinforcing measures on the perforating seal head 12.
In another example of the present invention, the cross-sectional shape of the bore seal head 12 is provided as an arch. The open pore end socket 12 is communicated with the inner cavity of the external drainage nipple 11 through a first opening 121, a second opening 122 is arranged at the periphery of the open pore end socket 12, the second opening 122 is arranged towards the inner cavity of the accommodating main body 13, the periphery of the second opening 122 is welded with the accommodating main body 13, and thus the inner cavity of the open pore end socket 12 and the inner cavity of the accommodating main body 13 are in sealing connection with each other.
In still another example of the present invention, the first opening 121 and the second opening 122 are each provided in a circular shape, and the first opening 121 and the second opening 122 are provided opposite to each other, the diameter of the first opening 121 is smaller than or equal to the diameter of the external drainage nipple 11, and the diameter of the second opening 122 is smaller than or equal to the inner diameter of the accommodating body 13. In other words, an annular collar may be formed on the periphery of the opening closure 12 so as to protrude inward in the circumferential direction, the collar surrounding the second opening 122, that is, as long as the second opening 122 enables the inner cavity of the opening closure 12 and the inner cavity of the accommodating body 13 to communicate with each other. Those skilled in the art will appreciate that the shapes and sizes of the external drainage nipple 11, the opening closure 12, the first opening 121 and the second opening 122 may be adjusted accordingly as needed, and this example is merely an illustrative example and should not be construed as limiting the invention.
As shown in fig. 1, 2 and 4, the accommodating body 13 is a straight steel cylinder, and a chamfer that can be welded with the open-hole seal head 12 is pre-made on one end of the accommodating body 13 that connects the open-hole seal head 12, but the other end of the accommodating body 13 is not chamfered in order to facilitate the cooperation with the annular groove 321 of the sealing rubber 32. In one example of the present invention, the shape of the accommodating body 13 is provided in a cylindrical shape, and it will be understood by those skilled in the art that the accommodating body 13 may be provided in a shape such as a hollow sphere, a hollow truncated cone, a hollow rectangular parallelepiped, or a hollow square having both ends open, as long as it is capable of accommodating oil and gas from a perforated point (i.e., a leakage point). As shown in fig. 4, the inner cavity of the accommodating body 13 extends through the entire accommodating body along the longitudinal direction, the diameter of the cavity is sized to accommodate leakage of at least a small valve, a small joint and the like mounted on a pipeline, the wall thickness of the cavity is designed to conform to the pressure bearing design of a pressure container, and the material of the accommodating body 13 is rolled by a rolled plate of the pressure container. Those skilled in the art will recognize that the shape of the accommodating body 13 may be selected accordingly as desired, and those skilled in the art will recognize that the material of the accommodating body 13 may be a pressure-resistant material, and that the present example is merely an illustrative example, and those skilled in the art should not be construed as limiting the present invention.
As shown in fig. 1 and 2, a sealing device 30 is provided at the bottom end of the accommodating main body 13, and the sealing device 30 includes a stopper seal assembly 31 and a sealing rubber 32 connected to each other. As shown in fig. 5a-5c, the limit seal assembly 31 includes a first limit seal block 311 and a second limit seal block 312 that cooperate with each other, the first limit seal block 311 being sleeved in an inner cavity of the second limit seal block 312 and forming an annular seal cavity 313 for accommodating the seal rubber 32. That is, the limiting seal assembly 31 is formed by two inner and outer rings, and the height of the inner and outer rings is welded to the bottom end of the accommodating main body 13 in a staggered manner, so as to jointly form a multiple prefabricated limiting for the sealing rubber 32.
As shown in connection with fig. 2, 5a and 5c, the first and second limit seal blocks 311 and 312 are each provided in a cylindrical shape. An annular flange 315 protrudes outward in the radial direction at the top end of the first limit seal block 311, and correspondingly, an annular protrusion 316 protrudes inward in the radial direction at the top end of the second limit seal block 312. The annular flange 315 and the annular projection 316 cooperate with each other to form an annular limiting groove 314 around. In use, the bottom end of the accommodating body 13 is inserted into the annular limiting groove 314, so that the inner cavity of the first limiting seal block 311 and the inner cavity of the accommodating body 13 are communicated with each other.
Referring to fig. 2, when the bottom end of the accommodating main body 13 is inserted into the annular limiting groove 314, the outer side of the annular flange 315 and the inner wall of the bottom end of the accommodating main body 13 are in clearance fit with each other, the inner side of the annular protrusion 316 and the outer surface of the bottom end of the accommodating main body 13 are in clearance fit with each other, and then both the bottom end of the accommodating main body 13 and the limiting seal assembly 31 are in fit connection with the sealing rubber 32. In still another example of the present invention, the inner diameter of the first limit seal block 311 is to secure a perforated point (i.e., a leakage point) of a small valve, a small joint, etc. mounted on the accommodating pipe, and at the same time, the outer diameter dimension of the first limit seal block 311 is gap-embedded in the inner diameter of the accommodating body 13, so that the outer surface of the first limit seal block 311 and the inner surface of the accommodating body 13 are gap-fitted to each other after the first limit seal block 311 is embedded in the accommodating body 13. Accordingly, the outer diameter of the second limit seal block 312 may cover and limit the outer diameter of the seal rubber 32, while the inner diameter of the second limit seal block 312 is clearance-fitted to the outer diameter of the accommodating main body 13.
As shown in fig. 2 and 6a, the sealing rubber 32 is a direct sealing component of the auxiliary device 100 for removing the corrosion-resistant layer at the perforation point of the pipeline, so that the sealing rubber 32 is made of a high-temperature resistant rubber material, which can prevent the sealing effect of the auxiliary device 100 from being affected by local high temperature generated in the process of mechanically removing the corrosion-resistant layer on the pipeline after the auxiliary device 100 is installed at the perforation point. In one example of the invention, the sealing rubber 32 is shaped as a nearly concave hollow rotating member with the lowermost edge of the rotating member being of an arcuate saddle shape having an arc that matches the arc of the outer diameter of the pipe being perforated.
In other words, as shown in connection with fig. 6a-6c, the shape of the sealing rubber 32 is set to a cylindrical shape. An annular groove 321 for inserting the bottom end of the accommodating main body 13 is provided at one end of the sealing rubber 32 near the limit seal assembly 31, the annular groove 321 being provided along the circumferential direction of the sealing rubber 32; the other end of the sealing rubber 32 is shaped in a saddle-shaped arc 322, and the curvature of the end surface of the sealing rubber provided with the saddle-shaped arc is matched with the curvature of the pipeline at the pipeline perforation point, so that the sealing rubber 32 is compacted on the pipeline at the pipeline perforation point.
After the bottom end of the accommodating main body 13 is inserted into the annular stopper groove 314 from the top end of the stopper seal assembly 31 toward the height direction of the first stopper seal block 311 and accommodated in the annular seal cavity 313, the sealing rubber 32 is inserted into the annular seal cavity 313 from the bottom end of the stopper seal assembly 31 toward the direction of the annular stopper groove 314. At this time, the sealing rubber 32 can be only partially accommodated in the annular sealing cavity 313 and the small half sealing rubber 32 is exposed outside the limit sealing assembly 31 due to the limitation of the sealing rubber 32 by the annular flange 315 and the annular protrusion 316, which is advantageous to press on the pipe at the perforation point, thereby enhancing the sealing effect and safety.
After the sealing rubber 32 is partially inserted into the annular sealing chamber 313, the bottom end of the accommodating main body 13 in the annular sealing chamber 313 is inserted into the annular groove 321. At this time, the outer surface of the sealing rubber 32 and the inner wall of the second limit seal block 312 are in clearance fit with each other, the inner wall of the sealing rubber 32 and the outer surface of the first limit seal block 311 are in clearance fit with each other, and the inner cavity of the sealing rubber 32 is respectively communicated with the inner cavity of the limit seal assembly 31 and the inner cavity of the accommodating main body 13. It can be seen that in the manufacture of the sealing rubber 32, the hollow diameter of the revolution (i.e., the inner diameter of the sealing rubber 32) is required to ensure that the piercing points of small valves, small joints, etc. mounted on the pipe can be accommodated, the outer diameter of the sealing rubber 32 is required to match the inner diameter of the second limit seal block 312, and the size of the annular groove 321 is required to match the accommodating body 13.
As shown in fig. 1 and 2, at least one jack stand 20 is provided on the outer side surface of the accommodating main body 13. All jack stands 20 in the at least one jack stand 20 are fixedly connected with the outer surface of the accommodating main body 13, and the upper surfaces of all jack stands 20 are provided with anti-drop limiting grooves 21 for being matched with the bottoms of the jacks. The drop-preventing limit groove 21 is provided on the upper surface of the jack stand 20 in a direction perpendicular to the longitudinal direction. As shown in fig. 7, a lateral collar 22 is provided on one end of the jack stand 20 connected to the receiving body 13. The lateral ring 22 is shaped in an arc, and the arc of the lateral ring 22 matches the arc of the outer surface of the accommodating main body 13. In another example of the invention, the inner surface of the lateral collar 22 has a bevel 221 and at least one stiffening rib 23 is provided on the lower surface of the jack stand 20, all of the at least one stiffening ribs 23 extending in the direction of the height of the jack stand 20 towards the direction facing away from the lower surface. Those skilled in the art will appreciate that the jack mount 20 may be provided in 3, 5 or more, and the stiffener may be provided in 1, 3 or more as desired, and those skilled in the art may make corresponding adjustments as desired, and this example is merely an illustrative example and should not be construed as limiting the invention.
In a further example of the invention, in order to even out the forces on opposite sides of the auxiliary device 100 for removing the perforation point of the pipe, this facilitates the sealing of the pipe at the perforation point by the sealing device 30, whereby at least one jack stand 20 is provided as a first jack stand 25 and a second jack stand 26. A first jack stand 25 and a second jack stand 26 such as wings are welded to opposite sides of the middle of the accommodating main body 13. As shown in connection with figures 1 and 8, the upper portions of the first and second jack stands 25 and 26 correspond to the bottoms of the jacks 210, and are provided with anti-drop limiting grooves 21 on the upper surface. Two right-angled triangular reinforcing ribs 23 are arranged on the lower surfaces of the first jack support 25 and the second jack support 26, and two right-angle sides of the reinforcing ribs 23 are respectively welded and connected with the lower surface of the jack support and the outer surface of the accommodating main body 13. And the lateral ring openings 22 of the first jack stand 25 and the second jack stand 26 are matched with the outer diameter of the accommodating main body 13, and a welding groove (i.e., an inclined surface 221) is reserved at the ring opening of the lateral ring opening 22, which is close to the upper surface of the jack stand. In order to facilitate welding the jack stand to the accommodating body 13, a weldable forging with high strength is required to be selected as a material of the jack stand.
Referring to fig. 8, in using the auxiliary device 100, the sealing rubber 32 of the auxiliary device 100 is compacted on the pipe at the perforated point, the receiving body 13 is covered on the perforated point (i.e., the leakage point), and then the two members of the jack 210 and the steel chain 220 are externally applied to the jack stand 20 to equalize the stress of the entire auxiliary device 100. After the auxiliary device 100 is installed, the anti-corrosion layer of the pipeline perforation point can be removed in a mechanical mode, so that the problems of large economic loss, large potential safety hazard and the like caused by a series of methods of stopping transportation by depressurization, temporarily plugging by nailing a wedge, mechanically removing the anti-corrosion layer and the like after the original oil gas pipeline is perforated can be solved; moreover, the provision of the sealing means allows for the removal of the anti-corrosive layer, so that the auxiliary device 100 can temporarily cover the leak without depressurizing. When the oil gas in the accommodating main body 13 needs to be drained to the far end, a valve and a rubber hose can be additionally arranged on the external drainage nipple, so that the oil gas concentration of the perforation point is temporarily discharged, and a good environment with low oil gas concentration is created for plugging and rush repair.
The technical scheme provided by the invention has the beneficial effects that:
(1) The auxiliary device for removing the anti-corrosion layer of the pipeline perforation point can solve the problems of great economic loss, great potential safety hazard and the like caused by a series of methods of stopping transportation by depressurization, temporarily plugging by nailing wedges, mechanically removing the anti-corrosion layer and the like after the original oil gas pipeline is perforated;
(2) The auxiliary device for removing the anti-corrosion layer of the pipeline perforation point provided by the invention is designed based on the rubber compression sealing auxiliary device to create conditions for removing the anti-corrosion layer, the device can temporarily cover and buckle the leakage point under the condition of not reducing pressure, and meanwhile, the leakage blocking effect is far better than that of a wooden wedge due to the adoption of rubber for isolation sealing at the perforation point, so that the safety can be greatly improved;
(3) According to the auxiliary device for removing the anti-corrosion layer of the pipeline perforation point, the valve and the rubber hose are additionally arranged on the external drainage nipple, so that an oil gas medium at the pipeline perforation point is drained to the far end, the oil gas concentration of the perforation point is temporarily discharged, and a good environment with low oil gas concentration is created for plugging and repairing;
(4) The auxiliary device for removing the anti-corrosion layer of the pipeline perforation point can be repeatedly used, and the pollution of materials such as the waste nailing and wood wedge and the like to the environment after construction is avoided, so that the auxiliary device is safer and more environment-friendly.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. An auxiliary device for removing an anticorrosive coating of a pipeline perforation point is characterized in that,
the auxiliary device comprises a containing cylinder for containing the pipeline perforation point, a first jack support, a second jack support and a sealing device for isolating the pipeline perforation point, wherein the containing cylinder covers the upper side of the pipeline perforation point, the first jack support and the second jack support are arranged on two opposite sides of a containing main body and are fixedly connected with the side face of the containing cylinder, the first jack support and the second jack support are both arranged in the middle of the containing main body, the sealing device is connected with the bottom end of the containing cylinder, the upper surfaces of the first jack support and the second jack support are both provided with anti-falling limiting grooves matched with the bottom of a jack, the anti-falling limiting grooves extend along the direction perpendicular to the longitudinal direction, lateral annular openings are formed in one ends of the first jack support and the second jack support, which are connected with the containing main body, the radian of the lateral annular openings is arc-shaped, the radian of the lateral annular openings is matched with the radian of the containing main body, the lateral annular openings are provided with at least one jack support which is provided with a reinforcing rib which extends along the first jack, and at least one of the lower side faces of the first jack support and the second jack support is provided with a reinforcing rib which extends along the direction;
the accommodating cylinder comprises an external drainage nipple, an opening sealing head and an accommodating main body, wherein two ends of the opening sealing head are respectively connected with the external drainage nipple and one end of the accommodating main body, and the other end of the accommodating main body is connected with the sealing device;
the sealing device comprises a limiting sealing assembly and sealing rubber which are connected with each other, wherein the limiting sealing assembly comprises a first limiting sealing block and a second limiting sealing block which are matched with each other, and the first limiting sealing block is sleeved in an inner cavity of the second limiting sealing block and forms an annular sealing cavity for accommodating the sealing rubber;
the shape of the first limit sealing block and the shape of the second limit sealing block are both cylindrical, an annular flange protrudes outwards in the radial direction at one end, close to the open-pore sealing head, of the first limit sealing block, an annular protruding part protrudes inwards in the radial direction at one end, close to the open-pore sealing head, of the second limit sealing block, the annular flange and the annular protruding part are matched with each other to form an annular limit groove for being inserted into the bottom end of the accommodating main body, the annular flange is connected with the inner wall of the bottom end of the accommodating main body in a welding mode, and the annular protruding part is connected with the outer wall of the bottom end of the accommodating main body in a welding mode;
the one end that is close to of sealing rubber is provided with and is used for inserting the annular groove of holding the bottom of main part, the annular groove is followed sealing rubber's circumferencial direction sets up, sealing rubber's inner chamber respectively with spacing sealing assembly's inner chamber with hold the inner chamber of main part intercommunication each other, sealing rubber's shape sets up to cylindrical shape, sealing rubber part holds in the annular seal chamber.
2. The auxiliary device for removing the corrosion protection layer of the perforated point of the pipeline according to claim 1, wherein,
the shape of external drainage nipple joint and holding the main part all sets up to cylindric shape, the inner chamber that holds the main part runs through along the lengthwise holds the main part, and hold the main part connect be provided with the chamfer on the one end of trompil head.
3. The auxiliary device for removing the corrosion protection layer of the perforated point of the pipeline according to claim 2, wherein,
the cross section of the open pore end socket is arched, a first opening communicated with the external drainage nipple is arranged at the center of the open pore end socket, a second opening is arranged at the periphery of the opening seal head and is arranged towards the inner cavity of the accommodating main body.
4. An auxiliary device for removing a corrosion protection layer of a perforated point of a pipeline according to claim 3,
the shape of the first opening and the shape of the second opening are round, the first opening and the second opening are opposite to each other, the diameter of the first opening is smaller than or equal to the diameter of the external drainage nipple, and the diameter of the second opening is smaller than or equal to the inner diameter of the accommodating main body.
5. The auxiliary device for removing the corrosion protection layer of the perforated point of the pipeline according to claim 2, wherein,
and threads are arranged on the outer surface of one end, far away from the open-pore seal head, of the external drainage nipple.
6. The auxiliary device for removing corrosion protection layer of pipeline perforation point according to claim 5, wherein,
the thread is connected with the screw cap.
7. The auxiliary device for removing corrosion protection layer of pipeline perforation point according to claim 5, wherein,
the screw thread is connected with one end of a valve for controlling the drainage quantity, and the other end of the valve is connected with a rubber hose for draining leaked oil gas.
8. The auxiliary device for removing the corrosion protection layer of the perforated point of the pipeline according to claim 1, wherein,
the outer side of the annular flange is in clearance fit with the inner wall of the accommodating main body, the inner side of the annular protruding part is in clearance fit with the outer surface of the accommodating main body, and the inner cavity of the first limit sealing block is communicated with the inner cavity of the accommodating main body.
9. The auxiliary device for removing the corrosion protection layer of the perforated point of the pipeline according to claim 1, wherein,
the shape of one end of sealing rubber far away from spacing seal assembly sets up to with the arc shape of the radian matched with of pipeline perforation point department, sealing rubber's inner wall with the surface clearance fit of first spacing sealing block, sealing rubber's surface with the inner wall clearance fit of second spacing sealing block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181814.9A CN107237956B (en) | 2016-03-28 | 2016-03-28 | Removing pipe perforation points auxiliary device of anticorrosive coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181814.9A CN107237956B (en) | 2016-03-28 | 2016-03-28 | Removing pipe perforation points auxiliary device of anticorrosive coating |
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| CN107237956B true CN107237956B (en) | 2023-08-29 |
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| WO1992014090A1 (en) * | 1991-01-30 | 1992-08-20 | Denso-Chemie Wedekind Kg | Device for processing the surfaces of pipes |
| CN1710313A (en) * | 2005-06-10 | 2005-12-21 | 汪兆钧 | Steel-plastic composite pipe side-hole sealing machine |
| CN202215893U (en) * | 2011-09-16 | 2012-05-09 | 沈阳辽海输油设备制造厂 | Drainage chain type plugging clamp apparatus |
| CN105179873A (en) * | 2015-09-28 | 2015-12-23 | 中国石油天然气集团公司 | Leakage repair cover for pipeline stretching-out articles |
| CN205078984U (en) * | 2015-03-31 | 2016-03-09 | 中国石油天然气股份有限公司 | Plugging device |
| CN205716223U (en) * | 2016-03-28 | 2016-11-23 | 中国石油天然气集团公司 | Remove the auxiliary device of pipe perforation point anticorrosive coat |
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2016
- 2016-03-28 CN CN201610181814.9A patent/CN107237956B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992014090A1 (en) * | 1991-01-30 | 1992-08-20 | Denso-Chemie Wedekind Kg | Device for processing the surfaces of pipes |
| CN1710313A (en) * | 2005-06-10 | 2005-12-21 | 汪兆钧 | Steel-plastic composite pipe side-hole sealing machine |
| CN202215893U (en) * | 2011-09-16 | 2012-05-09 | 沈阳辽海输油设备制造厂 | Drainage chain type plugging clamp apparatus |
| CN205078984U (en) * | 2015-03-31 | 2016-03-09 | 中国石油天然气股份有限公司 | Plugging device |
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| CN107237956A (en) | 2017-10-10 |
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