CN108331992B - Pipeline water-soluble device blocking method - Google Patents
Pipeline water-soluble device blocking method Download PDFInfo
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- CN108331992B CN108331992B CN201810124475.XA CN201810124475A CN108331992B CN 108331992 B CN108331992 B CN 108331992B CN 201810124475 A CN201810124475 A CN 201810124475A CN 108331992 B CN108331992 B CN 108331992B
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- pipeline
- plugging
- water
- pressure
- soluble
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000565 sealant Substances 0.000 claims abstract description 62
- 238000009434 installation Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 40
- 239000003292 glue Substances 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 8
- 239000003208 petroleum Substances 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 6
- 239000003345 natural gas Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 235000014121 butter Nutrition 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 9
- 239000002390 adhesive tape Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
- 239000002195 soluble material Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/1011—Soluble closing devices
-
- 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
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The method comprises the steps of determining the installation position of water-soluble sealant, righting the water-soluble sealant, fixing the water-soluble sealant in a pipeline, righting the water-soluble sealant through a righting device of a pushing device, keeping the water-soluble sealant parallel or nearly parallel to the pipeline, righting a blocking part, installing the blocking part and installing a pressure-bearing part, and making safe construction operation specifications when dangerous pipelines such as natural gas transportation, dangerous chemicals transportation, petroleum transportation and the like are replaced and maintained. Shortens the time of fire operation and improves the production efficiency.
Description
Technical field:
the invention relates to a pushing device for a water-soluble pipeline plugging device and a pipeline plugging method thereof.
The background technology is as follows:
at present, after a certain period of use, pipelines for conveying inflammable and explosive substances such as natural gas, petroleum and the like are corroded, so that replacement and maintenance are required, and welding fire operation is required during the replacement and maintenance. During welding fire operation, if inflammable and explosive substances cannot be effectively isolated, serious explosion and combustion accidents can occur. The prior plugging method mainly comprises the following steps: (1) butter blocking method is also called butter wall: the method is to push a certain amount of butter into two ends of a pipeline to be maintained to form a butter column so as to play a role in blocking and isolating, and has the defects that an operator is required to finish welding fire operation in a short time, otherwise, the butter can collapse and lose efficacy, the butter cannot be taken out and remain in the pipeline to pollute the pipeline, and the pipeline cannot bear pressure, so that accidents can be caused if the pressure breaks through the butter. Because butter walls cannot withstand pressure, a large amount of water and nitrogen are required to displace the hazardous gases from the pipeline prior to construction. (2) rubber ball plugging method is also called pigging: the method is characterized in that two inflatable rubber isolation balls are respectively arranged at two ends of a pipeline to be maintained and matched with a butter wall to play a role in blocking and isolating, and the isolation balls are required to be taken out after the operation is completed. Because this method is also not pressure tolerant, a significant amount of water and nitrogen is required to displace the hazardous gases from the pipeline prior to construction. (3) freeze plugging method: the method is to fill water in the pipeline to be replaced, freeze two sections of icicles in the pipeline by using a freezing device to play a role in blocking, and has the defects that a large amount of preparation work is needed before operation, a large amount of resources are needed to be consumed, if long freezing time is needed in a high-temperature season, and in a cold area, the icicles can be thoroughly melted only after the operation is completed, so that the resource waste is caused.
Disclosure of Invention
The invention aims to provide a method for plugging a pipeline water-soluble device, which aims to solve the maintenance problem of a transportation pipeline for transporting flammable and explosive substances such as natural gas, petroleum and the like. The invention provides a method for plugging a water-soluble device of a pipeline, which comprises the following specific steps in sequence:
1) Determining the installation position of the water-soluble sealant, wherein the installation temperature of the water-soluble sealant is preset, and the water-soluble sealant can be taken as the installation position of the water-soluble sealant from a specific position to a direction far away from a welding position according to whether the temperature of a pipeline is lower than the preset installation temperature when the temperature is conducted to the specific position during pipeline welding or not;
2) The water-soluble sealant is righted, the water-soluble sealant is fixed in a pipeline, and the water-soluble sealant is righted through a righting device of a pusher so as to be kept parallel or nearly parallel to the pipeline;
3) A blocking part righting step, wherein whether righting is needed is determined according to the form of the blocking part entering the pipeline, and if the form of the blocking part entering the pipeline is kept parallel or nearly parallel to the pipeline, the blocking part is not needed to be righted; if the axis of the plugging part entering the pipeline has a larger deflection angle with the axis of the pipeline to be maintained, the plugging part is righted by the righting device;
4) A plugging part installation step, namely pushing the plugging part from a pipeline opening part to the water-soluble sealant position by a pushing device through a righting device of the pushing device, and applying a certain pressure to the plugging part;
5) And a pressure-bearing part mounting step, namely pushing the pressure-bearing part to a position adjacent to the plugging part, and applying a certain pressure to the pressure-bearing part so as to tightly connect the pressure-bearing part with the plugging part.
As a further development of the embodiment of the invention, in step 4) a pressure is applied to the plug which is such that the water-soluble sealant enters the side of the plug adjoining the inner wall of the pipe.
The invention also provides a water-soluble pipeline plugging device, which comprises water-soluble sealant, a plugging part and a pressure-bearing part, wherein the bottom of one side of the plugging part, which is far away from an opening part of a pipeline to be maintained, is sealed, the side surface of the plugging part or the pressure-bearing part is provided with a flexible or elastic edge, the flexible or elastic edge is formed by combining a plurality of bulges with different heights, the heights of the bulges are sequentially increased from one side, which is far away from the opening part of the pipeline to be maintained, to the other side, and one side, which is close to the opening part of the pipeline to be maintained, of the plugging part is also connected with the pressure-bearing part.
As a further improvement of the embodiment of the present invention, the side surface of the blocking portion is further provided with a groove-shaped sealant accommodating portion for retaining the water-soluble sealant extruded thereto in the groove-shaped sealant accommodating portion.
As a further development of the embodiment of the invention, the sealant receiving portion is arranged circumferentially around the side face of the blocking portion.
As a further improvement of the embodiment of the present invention, the sealant accommodating section is provided in a ring shape.
As a further improvement of the embodiment of the invention, a glue locking sealing ring is further arranged on one side of the plugging part, which is far away from the opening of the pipeline to be maintained, and the water-soluble sealing glue is arranged at the adjacent part of the glue locking sealing ring and the pressure-bearing part, wherein the sealing glue is in a shape which is close to a circular cylinder and is arranged along the inner wall of the pipeline in a surrounding way, the glue locking sealing ring consists of two circular cylinders with the same inner diameter and different outer diameters and concentric centers at the bottom, the radius of one side, which is close to the pressure-bearing part, is smaller than the radius of one side, which is far away from the pressure-bearing part, and the glue locking sealing ring is soluble in water.
As a further improvement of the embodiment of the invention, the plugging part and the pressure-bearing part are arranged in a split way, and the plugging part and the pressure-bearing part are also provided with anti-rotation bulges or locking devices.
And the pushing device comprises an introducer which can be sleeved on a pipeline to be maintained, a telescopic pushing device connected with the introducer, a fixing device, a clamping part and a bolt, wherein the clamping part and the bolt outwards extend along the bottom of the introducer, the front end of the clamping part is provided with a shaft hole with an internal thread which can be matched with the bolt, the clamping part and the bolt can be connected through threads, the inner wall of the introducer extends along the extending direction of the inner wall of the introducer around the clamping part to form an inner wall extension part, the outer wall of the introducer extends towards the extending direction of the clamping part to form an outer wall extension part, an annular groove is formed at the adjacent part of the inner wall extension part and the outer wall extension part, the pushing device further comprises a pushing device matched with the introducer, and the pushing device comprises a connecting hook which is arranged at a position corresponding to the annular groove towards one end of the introducer.
As a further improvement of the embodiment of the present invention, the pushing device further includes a clamping portion connected to the hook, the clamping portion is provided with a groove capable of accommodating the connecting hook moving therein, the righting device includes a main body portion, two end sides of the main body portion are provided with detachable guide portions, one end of the main body portion is further provided with a detachable contact portion, the main body portion is a hollow cylinder, and the guide portions are connected with the side surfaces of the main body portion through threads.
The invention has the advantages and positive effects that:
(1) And when dangerous pipelines such as natural gas transportation, dangerous chemicals transportation, petroleum transportation and the like are replaced and maintained, a safe construction operation standard is formulated. Shortens the time of fire operation and improves the production efficiency.
(2) The pushing device for the water-soluble pipeline plugging device and the required auxiliary materials are made of soluble materials, can be thoroughly decomposed, do not need to be taken out, cannot pollute and plug a pipeline, and can be biodegraded without polluting the environment;
(3) The operation and the use are simple, no extra power is needed, the installation can be completed quickly by an operator manually, a large amount of preparation work in the early stage is reduced, and resources are saved;
(4) The product has high strength, even stress and strong pressure resistance, effectively eliminates accidents and improves the safety of dangerous pipelines during construction.
(5) The product is packaged in a whole set of maintenance package mode, and related auxiliary materials used from cleaning of the pipeline to installation completion are uniformly packaged in one package, so that the use is more convenient.
Drawings
FIG. 1 is a schematic diagram of an assembly structure of a water-soluble stopper;
FIG. 2 is a schematic axial cross-sectional view of a water-soluble occluder;
FIG. 3 is a schematic structural view of the pressure-receiving portion of the water-soluble stopper;
FIG. 4 is a schematic view of the structure of a part of the pressure-bearing portion of the water-soluble stopper;
FIG. 5 is a schematic view of the assembled structure of the present invention;
FIG. 6 is a schematic axial cross-sectional view of the occlusion of the present invention;
FIG. 7 is a schematic view of the structure of the pressure bearing part of the present invention;
FIG. 8 is a schematic structural view of the water-soluble occluder of the present invention in use;
FIG. 9 is a schematic view of the structure of the plugging portion of the water-soluble plugging device of the present invention;
FIG. 10 is a schematic view of the structure of the fastening part of the water-soluble stopper of the present invention;
FIG. 11 is a schematic view of the structure of the pressure-bearing section of the water-soluble stopper of the present invention;
FIG. 12 is a schematic plan view of the pressure-bearing portion of the water-soluble plugging device of the present invention
FIG. 13 is a schematic view of a water-soluble occluder mounting means of the present invention;
FIG. 14 is a schematic view of the assembled construction of the present invention;
figure 15 is a schematic cross-sectional structural view of a pressure bearing portion of the present invention;
FIG. 16 is a schematic cross-sectional structural view of the inventive locking glue seal;
FIG. 17 is a schematic view of the cross-sectional axial structure of the inventive lock rubber seal ring;
FIG. 18 is a schematic view of the structure of the centralizer of the invention;
FIG. 19 is a schematic view of the guide structure of the present invention;
FIG. 20 is a schematic view of the structure of the pushing device of the present invention;
FIG. 21 is a schematic view of the structure of the ejector of the present invention;
FIG. 22 is a schematic view of the structure of the introducer of the present invention;
FIG. 23 is a schematic cross-sectional view of an introducer of the invention;
FIG. 24 is a schematic cross-sectional view of a pusher of the present invention;
FIG. 25 is a schematic view of the structure of the pushing device of the present invention;
in the figure, a blocking part 1, a pressure-receiving part 2, a sealant 3, a receiving part 4, an adhesive tape 5, a hollow part 6, a flexible or elastic extension 7, a pressure-receiving part segment 8, a through hole 9, an annular body 10, a main body part 11, a guide part 12, a contact part 13, a pushing device 14, a magnetic device 15, an introducer 16, a clamping part 17, a shaft hole 18, an inner wall extension 19, an annular groove 20, an outer wall extension 21, an annular groove 22, a locking pushing device 23, a clamping part 24, a connecting hook 25, a hydraulic jack 26, a pushing device 27, a pushing rod 28, a pushing part 30, a threaded rod 31, an inner wall 32 of the introducer, an outer wall 33 of the introducer, a fixed bracket 34, a sliding groove 35, an annular protrusion 36, an included angle 37 formed by the flexible or elastic extension and the axial direction of the pressure-receiving part, a connecting part 38, an anti-rotation protrusion 39, a connecting rod 40, a fastening part 41, a handle 42, a locking device head 43, a connecting rod 44, a protruding fitting part 45, a locking inner thread 46, an anti-rotation groove 47, an extension 48, a blocking head 49, a locking seal 50.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.
In the various illustrations of the present application, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for convenience of illustration, and thus serve only to illustrate the basic structure of the subject matter of the present application.
In addition, terms such as "upper", "above", "lower", "below", and the like, used herein to denote spatially relative positions are used for convenience of description to describe one element or feature relative to another element or feature as illustrated in the figures. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In order to facilitate understanding of the technical content of the righting device according to the present invention, the technical content of the water-soluble occluder according to the present invention is first selected and one of them and the method of installing the same is described so as to facilitate easier understanding.
Example 1
Compared with the pipeline maintenance mode in the prior art, the plugging method of the water-soluble device has the advantages that the plugging device is water-soluble, and maintenance is performed after the plugging device is placed in a pipeline to be maintained during maintenance, so that the safety in the pipeline maintenance process of conveying flammable and explosive substances such as natural gas, petroleum and the like is improved, and after the maintenance is finished, the pipeline is not influenced by flushing and dissolving of water quality in the pipeline. Typical repair steps include (1) cutting the old pipe to be replaced or repaired by cold cutting; (2) Cleaning the inner walls of the old pipelines at the two sides of the cut-off part in the step (1) to be in an oil-free state by using cleaning wiping cloth; (3) According to the temperature conduction generated by a welded junction during welding, when the temperature of a product is lower than 80 ℃, the sealing part is firstly arranged in a pipeline at a determined position; (4) tightly attaching the sealant to the blocking part; (5) pushing the bearing parts sequentially; (6) the other end of the pipe is also manufactured according to the above steps. (7) pushing a new pipeline into the cutting part in the step (1); (8) welding the new pipe to the old pipe.
The invention mainly relates to a method for plugging a water-soluble device of a pipeline, which comprises the following steps:
1) Determining the installation position of the water-soluble sealant, wherein the installation temperature of the water-soluble sealant is preset, the water-soluble sealant is conducted to a specific position according to the temperature during welding of the pipeline, and if the temperature of the pipeline during welding of the specific position is lower than the preset installation temperature, the water-soluble sealant can be used as the installation position of the water-soluble sealant from the specific position to the direction away from the welding position;
2) The water-soluble sealant is righted, the water-soluble sealant is fixed in a pipeline, and the water-soluble sealant is righted through a righting device of a pusher so as to be kept parallel or nearly parallel to the pipeline;
3) A blocking part righting step, wherein whether righting is needed is determined according to the form of the blocking part entering the pipeline, and if the form of the blocking part entering the pipeline is kept parallel or nearly parallel to the pipeline, the blocking part is not needed to be righted; if the form of the plugging part entering the pipeline and the pipeline have a larger deflection angle, the plugging part is righted by the righting device;
4) A plugging part installation step, namely pushing the plugging part from a pipeline opening part to the water-soluble sealant position by a pushing device through a righting device of the pushing device, and applying a certain pressure to the plugging part;
5) And a pressure-bearing part mounting step, namely pushing the pressure-bearing part to a position adjacent to the plugging part, and applying a certain pressure to the pressure-bearing part so as to tightly connect the pressure-bearing part with the plugging part.
And in the step 4), a certain pressure is applied to the plugging part, so that the water-soluble sealant enters the side surface of the abutting part of the plugging part and the inner wall of the pipeline.
Example 2
As shown in fig. 1-4, the multi-section water-soluble pipeline plugging device comprises a plugging part made of water-soluble materials, sealant and a cylindrical pressure-bearing part. The pressure in the pipeline pushes the blocking part firstly, the sealing glue is extruded after the blocking part is stressed, the sealing glue is extruded to fill the round table-shaped hole in the middle of the pressure-bearing part, and then the sealing glue flows to the containing part of the annular groove at the outer side of the pressure-bearing part to form a plurality of sealing rings. Thereby improving the sealing performance of the product.
The side of the plugging part, which is contacted with the inner wall of the pipeline, is provided with an adhesive tape for adhering with the pipeline.
The outside of the pressure-bearing part is provided with a flexible or elastic extension which forms a barb shape with the pushing direction, so that the pressure in the pipeline can be pushed in, and when the pressure-bearing part is pushed backwards, the edge of the pressure-bearing part is opposite to the pipe wall, so that the friction force is increased. The pressure bearing performance is improved. The bearing part is formed by assembling a plurality of bearing part sectional fittings, and each interval of a plurality of barb flexible or elastic extension structures is provided with an annular groove communicated with the inside. The pressure-bearing part is hollow, and one end is open and the other end is closed.
The edge of the pressure-bearing part is flexible or elastic extension of the protruding annular body, is in a barb shape, and is forward when the barb is pushed into the pipeline and reverse when the barb is taken out. The interior of the pressure-bearing part is a hollow part in the shape of a truncated cone. Every other several annular bodies are provided with a groove, the groove is communicated with the hollow part in the interior through a through hole, and the interior of the pressure-bearing part is in a truncated cone-shaped hollow design. The barbs of the pressure bearing part are opened clockwise and closed anticlockwise.
The plugging part is a cylinder, and the side surface of the joint part with the inner wall of the pipeline is provided with an adhesive tape with viscosity.
The sealant is cylindrical fluid.
Example 3
As shown in figures 5-7 and 11, the water-soluble umbrella-shaped plugging device comprises a bolt-shaped plugging part made of water-soluble materials, wherein the pressure-bearing part is cylindrical and comprises an inner hollow part and annular sealant. The sealing glue is extruded when the sealing glue is extruded to fill the small gaps between the sealing part and the inner wall of the pipeline and between the sealing part and the inner wall of the pipeline, and the small gaps between the sealing part and the inner wall of the pipeline are tightly sealed. The plugging part is stressed to move backwards, the screw thread-shaped protrusion designed by the bolt-shaped plugging part is clamped on the locking internal screw thread-shaped groove in the pressure-bearing part, and the pressure-bearing part is not moved. When the plugging part and the pressure-bearing part are assembled, a space is reserved between the bottom of the plugging part and the pressure-bearing part, and the plugging part and the pressure-bearing part are not contacted. After the assembly is completed, the plugging part is pressed to move backwards in actual work, the cambered surface of the head part at one side of the plugging part is enlarged, the pressure-bearing part is tightly attached to the inner wall of the pipeline, and the pressure-bearing property of a product is improved. By the design, the pressure born by the plugging part is converted to the inner wall of the pipeline, which is contacted with the inner wall of the pipeline, so long as the pressure in the pipeline is smaller than the damage limit pressure of the product, the pressure in the pipeline is higher, the pressure bearing capacity of the product is higher as the pressure bearing part is more tightly contacted with the inner wall of the pipeline. In order to better fix the plugging part and the pressure bearing part, the side surfaces of the plugging part and the pressure bearing part are provided with water-soluble adhesive tapes.
The head of the bolt-shaped plugging part is of an arc surface structure, one side of the bolt-shaped plugging part is of an arc surface, and the arc surface is connected with a threaded extension part. The edge of the head of the plugging part, which is contacted with the inner wall of the pipeline, is of a flexible or elastic structure, so that the plugging part is suitable for the deformation of the pipeline and pits generated by corrosion.
The outside of the pressure-bearing part is annularly protruded to form a barb-shaped flexible or elastic outer edge, an included angle formed by the flexible or elastic outer edge and the axial direction of the pressure-bearing part is more than 0 degrees and less than 90 degrees, the pressure-bearing part can be pushed in, and when the pressure-bearing part is pushed backwards by the pressure in the pipeline, the edge of the pressure-bearing part is opposite to the pipe wall, so that the friction force is increased.
The plugging part is provided with a plurality of layers of umbrella-shaped cambered surfaces which can be cut into a plurality of small blocks.
The edge of the pressure-bearing part plate is flexible and is provided with barbs, the barbs are forward when pushed into the pipeline, and the barbs are reverse when taken out. The pressure-bearing part is internally provided with circular hollow structures, locking internal thread-shaped grooves matched with umbrella-shaped cambered surfaces are arranged in the pressure-bearing part, and the umbrella-shaped cambered surfaces are clamped on the locking internal thread-shaped grooves.
A further improvement of example 3, as shown in fig. 8-13, is a water-soluble pipe plugging device, comprising a plugging portion made of water-soluble material, a cylindrical pressure-bearing portion having a hollow interior, and a fastening portion. The two truncated cone-shaped structures are tensioned, so that the outer diameter of the plugging device extends outwards, the plugging device is tightly fixed in a pipeline, and the pressure bearing performance of a product is improved.
The connecting part of the plugging part is of a truncated cone-shaped structure, one side of the connecting part is provided with a connecting rod, the upper surface of the connecting rod is provided with threads, and the threads can be connected with locking internal threads of the rear fastening part. The extension of the plugging part is a flexible structure, and is suitable for the deformation of the pipeline and the pit generated by corrosion.
The outside of the pressure-bearing part is provided with an annular protuberance to form a barb-shaped flexible or elastic extension, the included angle formed by the flexible or elastic extension and the axial direction of the pressure-bearing part is more than 0 degrees and less than 90 degrees, and the pressure in the pipeline can be pushed forward to appear, and the pressure-bearing part is pushed backward under the action of the pressure. The barbs extending from the bearing part are opposite to the pipe wall, so that the bearing performance is enhanced. The pressure-bearing part is formed by assembling a plurality of annular fittings. The hollow part in the pressure-bearing part is in a truncated cone-shaped structure and is provided with an anti-rotation groove. The circular truncated cone-shaped hollow of the pressure-bearing part is smaller than the circular truncated cone-shaped matching part of the plugging part, so that the diameter of the pressure-bearing part can be expanded and more tightly attached to the pipe wall when the pressure-bearing part is tensioned.
The plugging part is formed by matching the pressure-bearing part with the pressure-bearing part, and the connecting rod of the plugging part penetrates through the pressure-bearing part to screw up the fastening part. By tightening the nut on the connecting rod, the conical surface of the plugging part supports the pressure-bearing part after the tightening and stressing, the diameter of the pressure-bearing part is stressed to extend outwards and stressed with the inner wall of the pipeline, and the adhesive tape is tightly adhered to the inner wall of the pipeline. The pressure bearing purpose is achieved.
The extension of the plugging part contacted with the inner wall of the pipeline is provided with a plurality of flexible extensions which can shrink and deform. The round table body-shaped structure of the plugging part is provided with an anti-rotation protrusion which is matched with an anti-rotation groove in the pressure bearing part, so that the purpose of preventing rotation is achieved. The shutoff portion is equipped with the connecting rod, is equipped with the screw thread above the connecting rod.
The sealing glue is filled between the plugging part and the pressure-bearing part, the sealing glue is extruded through the screw thread on the connecting rod, and the sealing glue fills the tiny gaps of the extension of the pressure-bearing part and the pipe wall and the gaps of the two vertebral bodies after being stressed, so that the purpose of complete sealing is achieved. After the sealing part is thoroughly tensioned, a certain distance is reserved between the sealing part and the pressure bearing part, so that the sealant is ensured to leave a sufficient allowance space.
The connecting part of the plugging part is in a shape of a truncated cone, a connecting rod is arranged in front of the surface of the truncated cone, and threads are arranged on the connecting rod.
The extension of pressure-bearing portion and pipeline inner wall contact has a plurality of flexible extensions, can shrink deformation. The round table body-shaped structure of the plugging part is provided with an anti-rotation protrusion which is matched with the groove in the pressure bearing part, so that the purpose of preventing rotation is achieved.
The plugging part passes through the pressure-bearing part through the connecting rod, is connected with the rear fastening part, and is screwed up to fasten the fastening part, so that the three accessories are tightly matched and connected into a whole. And extruding the sealant to fill the fine gaps with the sealant.
The lateral extension of the pressure bearing part is a spacing annular flexible barb extension. An anti-rotation groove is formed in the pressure-bearing portion.
The rear fastening part is cylindrical, and threads are arranged in the middle of the rear fastening part. The fastening part is provided with a tightening hole matched with the pushing device.
The sealant is preformed in a shape approximating a cylinder.
The installation tool is a locking pushing device consisting of two cake-shaped body locking pushing device heads and a handle. The front locking pushing device head is provided with a protruding matching part connected with the fastening part. The locking pushing device head at the rear side plays a role in stabilizing in a pipeline, the tightening handle and the middle connecting rod are of telescopic design and are not influenced by the installation distance, the product installation distance is far away from the pipeline mouth to pull the handle outwards, and otherwise, the installation distance is close to the pipeline mouth to push inwards.
Further improvements may be: the shape of the locking rubber sealing ring is equivalent to the combination of two circular columns with the same inner diameter and different outer diameters, the top end or the lower end of the cross section taking the axle center as the boundary is in a step shape, and the side surface contacted with the pipe wall is provided with an adhesive tape which can be adhered on the inner wall of the pipeline.
Example 4
As shown in fig. 14-17, the water-soluble pipeline plugging device of the glue locking sealing ring comprises a pressure-bearing part made of water-soluble materials, and further comprises the glue locking sealing ring, sealing glue and a cylindrical pressure-bearing part made of water-soluble materials, wherein one end of the pressure-bearing part far away from the opening part of the pipeline is sealed.
The glue locking sealing ring is used for preventing the sealant from flowing.
The outside of the pressure-bearing part is provided with a barb-shaped flexible edge with the extending direction opposite to the direction of entering the pipeline, so that the pressure in the pipeline can be pushed in, and when the pressure-bearing part is pushed backwards, the edge of the pressure-bearing part is opposite to the pipeline wall, so that the friction force is increased. The pressure bearing performance is improved. The pressure-bearing part is formed by assembling a plurality of annular fittings. The pressure-bearing part is internally of a honeycomb structure, so that the dissolution time can be accelerated.
And the sealing glue is filled in the sealing ring and the middle groove of the pressure-bearing part, and the sealing glue fills the small gaps between the edge of the pressure-bearing part and the pipe wall, so that the sealing purpose is achieved.
The shape of the locking rubber sealing ring is equal to the combination of two circular columns with the same center, the same inner diameter and different outer diameters at the bottom, the top end or the lower end of the cross section taking the axle center as the boundary is in a step shape, and the side surface contacted with the pipe wall is provided with an adhesive tape which can be adhered on the inner wall of the pipeline.
The edge of the pressure-bearing part is flexible or elastic extension of a multi-ring-shaped bulge structure, an included angle formed by the flexible or elastic extension and the axial direction of the pressure-bearing part is more than 0 and less than 90 degrees, the outer wall of the pressure-bearing part is flexible or elastic and is provided with a plurality of layers of slope-shaped barbs with different heights, the slope-shaped barbs are forward when pushed into a pipeline, and the pressure in the pipeline is reverse when pushing the pressure-bearing part. The interior of the pressure-bearing part is honeycomb-shaped. The pressure-bearing portion is composed of a plurality of annular segments.
Further improved, the pressure bearing part is composed of a plurality of annular distributed outer edge part sections.
Example 5
As shown in the figure, in order to install the water-soluble plugging device in the petroleum pipeline to be repaired, the water-soluble plugging device needs to be installed and positioned, and the righting device is used for correcting the positions of the sealant, the pressure bearing part and the blocking part when the water-soluble plugging device is installed in the petroleum pipeline to be repaired so that the water-soluble plugging device can be positioned in a direction parallel to the pipeline in the pipeline.
As shown in fig. 18 to 25, the pusher for a water-soluble pipeline plugging device according to the present invention includes a main body portion, wherein both end sides of the main body portion are provided with detachable guide portions, and one end of the main body portion is further provided with a detachable contact portion. The body part is a cylinder with a hollow inside. The guide part is connected with the side surface of the main body part through threads. The side of the guiding part is also embedded with a ball. The contact portion is screwed with the main body portion or the guide portion. The device also comprises a pushing device for pushing the plugging device for the water-soluble pipeline into the water-soluble pipeline. The main body part, the guide part and the contact part are all made of metal. The device also comprises a pushing device for taking out the pushing device for the water-soluble pipeline plugging device by utilizing the magnetic force device. The guide part is a circular column with smooth side surfaces. The contact part is a flat cake-shaped body.
The guide part can be provided with different sizes and matched with different pipeline calibers.
The contact portion is sized to mate with the guide portion, and typically has protruding threads on the bottom surface of the contact portion and female threads on the corresponding location of the guide portion for connection.
In order to make the righting device smoother when entering the pipeline, the side surface of the guiding part can be embedded with the ball or the roller in advance, and the ball or the roller slightly exceeds the side surface. The centering device can be directly arranged on the pushing rod of the pushing device, and the centering device is directly driven to move by the telescopic pushing rod, so that the centering device is detachably arranged on the pushing device for the convenience of site construction.
The magnetic force device is usually arranged on a pushing-out part of the pushing device, and a magnetic force ring is preset on the pushing-out part. The pushing part is also matched with different pipe diameters with adjustable size, is detachable, and the bottom surface is provided with a protruding threaded rod which is matched with the internal thread of the pushing rod of the pushing device. The pushing rod is telescopic, stretches out during installation, and drives the pushing part at the end part to move into the pipeline by the pushing rod and then pushes the righting device to move.
In another mode, the centering device can be directly arranged on the pushing rod of the pushing device, the telescopic pushing rod directly drives the centering device to move, and the centering device is detachably arranged on the pushing device for convenience of site construction.
The pushing device further comprises an introducer which is clamped on the pipeline, the diameter of the introducer is slightly larger than that of the circular column of the pipeline, one end of the introducer axially extends out along the bottom end to form a plurality of clamping parts, the clamping parts are uniformly arranged around the circumferential direction, the front ends of the clamping parts are provided with shaft holes with internal threads, the front ends of the clamping parts can be connected with bolts through threads, and the introducer can be firmly clamped on the pipeline by tightening the bolts. The introducer stretches out one end of joint portion, along the inner wall of introducer encircle to joint portion stretching out the direction and stretch out inner wall extension portion, forms annular groove with adjacent joint portion, and the extension length of inner wall extension portion is less than the extension length of joint portion.
The introducer extends from the outer wall of the introducer along the extending direction of the outer wall surrounding to the clamping part, the extending length of the outer wall extending part is smaller than that of the inner wall extending part, and an annular groove is formed at the adjacent part of the outer wall extending part and the inner wall extending part.
The pushing device further comprises a pushing device matched with the introducer, the pushing device comprises clamping parts uniformly arranged along the circumferential direction of the side face of the pushing rod, and one end, facing the introducer, of each clamping part is provided with a connecting hook at a position corresponding to the annular groove. The connecting hook is movably arranged on the clamping part, a fixed support which radially extends out along the pushing rod is arranged on one side of the clamping part, which faces the pushing device, a sliding groove which can be used for accommodating the sliding of the connecting hook is arranged on the fixed support, the connecting hook can slide along the sliding groove, the position of the connecting hook is fixed through a fixing device on the other side of the sliding groove, the connecting hook extends outwards along the extending direction of the clamping part, a hook body is formed at the top end, the front end of the hook body can just extend into an annular groove formed at the adjacent part of the extending part of the outer wall and the extending part of the inner wall, and a telescopic hemispherical clamping body can be further arranged at the front end of the hook body, so that the connecting hook body and the inner wall can be clamped tightly. The fixing device can be characterized in that the connecting hook is provided with threads through the bottom of the groove and is matched and fixed with the bolt. The fixed support is also provided with a stabilizing part to strengthen the strength of the support.
The push rod is connected with a driving device for driving the push rod to extend and retract, and the push rod can be realized by a hydraulic jack.
The front end of the pushing rod, usually the bottom surface of the pushing part, is provided with a position sensor for detecting the distance of the pushing part extending into the pipeline; and a temperature sensor is also arranged to detect the temperature in the pipeline, so that the operation safety is improved.
The hydraulic jack, the temperature sensor and the position sensor can be integrally controlled by a control device, and the control device can control the movement of the hydraulic jack and can display the extending distance and the temperature in the pipeline at any time.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. The plugging method of the pipeline water-soluble device comprises the following specific steps in sequence:
1) Determining the installation position of the water-soluble sealant, wherein the installation temperature of the water-soluble sealant is preset, and the water-soluble sealant can be taken as the installation position of the water-soluble sealant from a specific position to a direction far away from a welding position according to whether the temperature of a pipeline is lower than the preset installation temperature when the temperature is conducted to the specific position during pipeline welding or not;
2) The water-soluble sealant is cylindrical fluid, the water-soluble sealant is fixed in a pipeline, and the water-soluble sealant is righted through a righting device of a pusher so as to be kept parallel or nearly parallel to the pipeline;
3) A blocking part righting step, wherein whether righting is needed is determined according to the form of the blocking part entering the pipeline, and if the form of the blocking part entering the pipeline is kept parallel or nearly parallel to the pipeline, the blocking part is not needed to be righted; if the axis of the plugging part entering the pipeline has a larger deflection angle with the axis of the pipeline to be maintained, the plugging part is righted by the righting device;
4) A plugging part mounting step, wherein the plugging part is a cylinder, and the plugging part is pushed to the water-soluble sealant position through a pipeline opening part by the pushing device and a certain pressure is applied to the plugging part;
5) A pressure-bearing part mounting step, namely pushing the pressure-bearing part to a position adjacent to the plugging part, and applying a certain pressure to the pressure-bearing part to enable the pressure-bearing part to be tightly connected with the plugging part;
the pipeline water-soluble device comprises water-soluble sealant, a plugging part and a pressure-bearing part, wherein the bottom of one side of the plugging part, which is far away from an opening part of a pipeline to be maintained, is sealed, one side of the plugging part, which is close to the opening part of the pipeline to be maintained, is also connected with the pressure-bearing part, one side of the plugging part, which is far away from the opening part of the pipeline to be maintained, is also provided with a sealant locking sealing ring, the water-soluble sealant is arranged at the adjacent part of the sealant locking sealing ring and the pressure-bearing part, the water-soluble sealant is cylindrical fluid, the plugging part is cylindrical, the pusher comprises a pushing device and a righting device, the righting device comprises a main body part, both end side surfaces of the main body part are respectively provided with a detachable guide part, one end of the main body part is also provided with a detachable contact part, the main body part is a cylinder with hollow inside, the guide part is connected with the side surface of the main body part through threads, and the righting device is arranged on a pushing rod of the pusher, and the righting device is driven by a telescopic pushing rod.
2. The method of plugging a water-soluble device in a pipeline according to claim 1, wherein in step 4) a pressure is applied to the plugging portion, said pressure being such that the water-soluble sealant enters the side of the plugging portion adjacent to the inner wall of the pipeline.
3. The water-soluble pipeline plugging device using the plugging method according to claim 1, comprising water-soluble sealant, a plugging part and a pressure-bearing part, wherein the bottom of one side of the plugging part far away from the opening of the pipeline to be repaired is sealed, the side surface of the plugging part or the pressure-bearing part is provided with a flexible or elastic edge, the flexible or elastic edge is formed by combining a plurality of bulges with different heights, the heights of the bulges are sequentially increased from one side far away from the opening of the pipeline to be repaired to the other side, the side of the plugging part near the opening of the pipeline to be repaired is also connected with the pressure-bearing part, the water-soluble sealant is cylindrical fluid, and the plugging part is cylindrical.
4. A water-soluble pipe plugging device according to claim 3, wherein the side face of said plugging portion is further provided with a groove-like sealant accommodating portion for retaining said water-soluble sealant extruded thereto in the groove-like sealant accommodating portion.
5. The water-soluble pipe plugging device according to claim 4, wherein the pressure-bearing portion is also provided with a sealant accommodating portion which is circumferentially provided around a side face of the plugging portion.
6. The water-soluble pipe plugging device of claim 4, wherein the sealant receiving portion is annularly disposed.
7. The water-soluble pipeline plugging device according to claim 3, wherein a glue locking sealing ring is further arranged on one side of the plugging part, which is far away from the opening of the pipeline to be maintained, and is arranged at the adjacent part of the glue locking sealing ring and the pressure-bearing part, the glue sealing ring is in a shape which is close to a circular cylinder and is arranged along the inner wall of the pipeline in a surrounding manner, the glue locking sealing ring is composed of two circular cylinders with the same inner diameter and different outer diameters and concentric bottom centers, the radius of one side, which is close to the pressure-bearing part, is smaller than the radius of one side, which is far away from the pressure-bearing part, and the glue locking sealing ring is soluble in water.
8. The water-soluble pipe plugging device according to claim 3, wherein the plugging portion and the pressure-bearing portion are provided separately, the plugging portion is further provided with an anti-rotation protrusion, and the pressure-bearing portion is further provided with an anti-rotation groove.
9. A pusher using the plugging method according to claim 1, comprising a pusher and a righting device, wherein the pusher comprises an introducer which can be sleeved on a pipeline to be repaired, a telescopic pushing device connected with the introducer, the introducer further comprises a fixing device, the fixing device comprises a clamping part and a bolt, the clamping part extends outwards along the bottom of the introducer, the front end of the clamping part is provided with an axial hole capable of being matched with the bolt, the clamping part and the bolt can be connected through threads, the inner wall of the introducer extends along the extending direction of the clamping part in a surrounding manner, an inner wall extending part is formed, the outer wall of the introducer extends towards the extending direction of the clamping part, an annular groove is formed at the adjacent part of the inner wall extending part and the outer wall extending part, the pushing device further comprises a pushing device matched with the introducer, the pushing device comprises a connecting hook which is arranged at a position corresponding to the annular groove towards one end of the introducer, the pushing device further comprises a clamping hook which is connected with the clamping hook, the clamping hook is arranged on the sliding support is connected with the sliding support, and the sliding support is arranged on one side of the sliding support.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810124475.XA CN108331992B (en) | 2018-02-07 | 2018-02-07 | Pipeline water-soluble device blocking method |
| PCT/CN2019/072741 WO2019154078A1 (en) | 2018-02-07 | 2019-01-23 | Plugging method of pipe water-soluble device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810124475.XA CN108331992B (en) | 2018-02-07 | 2018-02-07 | Pipeline water-soluble device blocking method |
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| CN108331992A CN108331992A (en) | 2018-07-27 |
| CN108331992B true CN108331992B (en) | 2023-12-19 |
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| CN201810124475.XA Active CN108331992B (en) | 2018-02-07 | 2018-02-07 | Pipeline water-soluble device blocking method |
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| CN (1) | CN108331992B (en) |
| WO (1) | WO2019154078A1 (en) |
Families Citing this family (8)
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|---|---|---|---|---|
| CN108331992B (en) * | 2018-02-07 | 2023-12-19 | 李得恩 | Pipeline water-soluble device blocking method |
| CN108999976B (en) * | 2018-09-04 | 2024-01-23 | 沈阳飞机工业（集团）有限公司 | Single-side installation sealing plug |
| CN110752537B (en) * | 2019-09-30 | 2021-05-07 | 国网山东省电力公司昌乐县供电公司 | Special mould for plugging fire clay in cable hole |
| CN110820962A (en) * | 2019-11-20 | 2020-02-21 | 中建四局贵州投资建设有限公司 | Construction screw hole plugging head and method for plugging screw hole |
| CN111038851B (en) * | 2019-12-24 | 2024-06-21 | 中投(天津)智能管道股份有限公司 | Pipeline plugging device |
| CN115800142A (en) * | 2022-11-10 | 2023-03-14 | 国网辽宁省电力有限公司铁岭供电公司 | Cable hole plugging device for power cabinet |
| CN115978342A (en) * | 2022-12-26 | 2023-04-18 | 江西洪都航空工业集团有限责任公司 | Plugging device for air tightness detection of aircraft fuel conduit |
| CN117837362B (en) * | 2024-03-07 | 2024-05-28 | 山东省农业机械科学研究院 | Water and fertilizer regulating and controlling conveying pipeline |
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| Publication number | Publication date |
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| WO2019154078A1 (en) | 2019-08-15 |
| CN108331992A (en) | 2018-07-27 |
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