CN111322486B - Pipeline leakage stopping device and leakage stopping method thereof - Google Patents
Pipeline leakage stopping device and leakage stopping method thereof Download PDFInfo
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- CN111322486B CN111322486B CN201811533498.2A CN201811533498A CN111322486B CN 111322486 B CN111322486 B CN 111322486B CN 201811533498 A CN201811533498 A CN 201811533498A CN 111322486 B CN111322486 B CN 111322486B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
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Abstract
The invention relates to the technical field of pipeline maintenance equipment and discloses a pipeline leakage stopping device and a leakage stopping method thereof, wherein the pipeline leakage stopping device comprises a packing box, a packing and a packing compression ring; the stuffing box comprises a first clamping shell and a second clamping shell which are oppositely arranged, and the first clamping shell and the second clamping shell are connected in a butt joint mode to form a cavity; the cavity comprises a cylindrical cavity for sleeving a pipeline and a ring cavity attached to the outer side of the cylindrical cavity, and the packing is filled in the ring cavity; the packing compression ring comprises a first pressing block and a second pressing block which are oppositely arranged, and the first pressing block and the second pressing block are connected in an involutory mode to form the packing compression ring sleeved on the pipeline; one end of the packing compression ring, which faces the packing, extends into the annular cavity to compress the packing; the butt joint surfaces of the first clamping shell and the second clamping shell and the butt joint surfaces of the first pressing block and the second pressing block are staggered at a preset angle. The pipeline leakage stopping device optimizes and improves the structure of the existing pipeline leakage stopping tool, and has the advantages of simple structure, quick assembly, convenient use and excellent leakage stopping effect.
Description
Technical Field
The invention relates to the technical field of pipeline maintenance equipment, in particular to a pipeline leakage stopping device and a leakage stopping method thereof.
Background
Due to various reasons such as welding quality defect, pipeline medium corrosion, medium scouring after long-term use, external corrosion and the like, leakage and leakage phenomena are easy to occur in a pipeline welded junction and even a pipeline body, and the leakage stoppage of the pipeline is an important work for pipeline maintenance. Maintenance personnel need to adopt different leakage stopping methods and correct leakage point treatment methods according to different characteristics of leakage, can safely and quickly treat leakage points, and reduce production halt to the maximum extent and property loss. Cast iron pipelines are mostly used for conveying industrial water, domestic water and fire-fighting water, are generally deeply buried underground, and have long service life. Although cast iron pipes have good corrosion resistance, they are prone to fracture when subjected to geological non-uniform settlement or local stress or to leakage when subjected to local corrosion due to material characteristics. Due to the needs of production and living, part of pipelines cannot be stopped, and meanwhile, the emptying and replacement of the other part of pipelines are difficult.
At present, leakage of cast iron pipelines is usually blocked by adopting electric welding and brazing modes, and the secondary leakage is easily caused because the weldability of cast iron materials is poor, the outdoor operation conditions are severe, the construction difficulty is high, the welding technical requirements on operators are high, the welding quality of cracks of the cast iron pipelines is not easily ensured, the stress between the cast iron pipelines is eliminated, and the secondary leakage is easily caused.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a simple and feasible pipeline plugging device with a good plugging effect, and aims to solve the problems that the existing pipeline plugging device is high in construction difficulty and easy to cause secondary leakage.
Another object of the present invention is to provide a method for plugging a pipeline by using the above-mentioned device for plugging a pipeline, so as to rapidly and efficiently eliminate the stress at the leaking location of the cast iron pipeline and eliminate the leakage.
(II) technical scheme
In order to solve the technical problem, the invention provides a pipeline leakage stopping device which comprises a packing box, a packing and a packing compression ring; the stuffing box comprises a first clamping shell and a second clamping shell which are oppositely arranged, and the first clamping shell and the second clamping shell are connected in a involutory mode to form a cavity; the cavity comprises a cylindrical cavity for sleeving a pipeline and an annular cavity attached to the outer side of the cylindrical cavity, and the packing is filled in the annular cavity; the packing compression ring comprises a first pressing block and a second pressing block which are oppositely arranged, and the first pressing block and the second pressing block are connected in an involutory mode to form the packing compression ring sleeved on the pipeline; one end of the packing compression ring, which faces the packing, extends into the annular cavity to compress the packing; the butt joint surface of the first clamping shell and the second clamping shell is staggered with the butt joint surface of the first pressing block and the second pressing block by a preset angle.
The first clamping shell and the second clamping shell comprise semicircular pipes and bottom covers arranged at one ends of the semicircular pipes in the axial direction.
The stuffing box further comprises a first flange arranged at the other end of the semicircular pipe in the axial direction, and the first flange comprises two first semicircular flanges respectively arranged on the first clamping shell and the second clamping shell; a second flange is arranged at one end of the packing compression ring, which is far away from the packing, and the second flange comprises two second half flanges which are respectively arranged on the first pressing block and the second pressing block; the first flange is detachably connected to the second flange so as to compress the packing compression ring and the packing box; the butt joint surfaces of the two first half flanges and the butt joint surfaces of the two second half flanges are staggered at a preset angle.
The two ends of the radial direction of the first half flange are provided with first flange nuts, and the two ends of the radial direction of the second half flange are provided with second flange nuts.
And shell nuts are arranged at two ends of the semicircular pipe in the radial direction.
Wherein, one side of the bottom cover towards the pipeline is provided with a groove, and the groove is used for embedding a metal soft wire.
The end face of the packing pressing ring, which faces the packing, is an inclined plane.
The invention also provides a pipeline plugging method using the pipeline plugging device, which comprises the following steps:
the first clamping shell and the second clamping shell are connected in an involutory mode and sleeved at a leakage position, so that the leakage position is completely wrapped in the cylindrical cavity;
packing the packing in the annular cavity;
the first pressing block and the second pressing block are connected in an involutory mode and sleeved on a leakage pipeline to form the packing pressing ring, and the butting surface of the first clamping shell and the second clamping shell and the butting surface of the first pressing block and the second pressing block are staggered at a preset angle;
and one end of the packing compression ring is extended into the annular cavity to compress the packing until the leakage is stopped.
Wherein after said mating joining said first pod and said second pod and before said packing is packed within said annular cavity, further comprising the steps of: and embedding the metal soft wire in the groove on the bottom cover.
Wherein, after the leakage is stopped, the method further comprises the following steps: and (4) fixedly sealing the pipeline plugging device by using a normal-temperature curing material.
(III) advantageous effects
Compared with the prior art, the invention has the following advantages:
according to the pipeline leakage stopping device provided by the invention, the first shell and the second shell are connected in a butt joint mode to form the packing box, the packing box is sleeved on a leakage pipeline, and then the packing of an annular cavity filled between the packing box and the leakage pipeline is compressed to realize the purpose of stopping a leakage point. By using the packing to replace leaking stoppage daub, the daub is prevented from flowing into the pipeline when the leak is large, and meanwhile, the stress at the fracture part of the pipeline can be quickly eliminated and the leakage is eliminated. The packing pressing ring is formed by connecting the first pressing block and the second pressing block in a closing mode, and one end of the packing pressing ring extends into the annular cavity to tightly press the packing. And the butt joint face of the first clamping shell and the second clamping shell and the butt joint face of the first pressing block and the second pressing block are in a preset angle staggered mode, so that the stress is more uniform, and the packing is prevented from expanding after absorbing leakage liquid and jacking the packing pressing ring to cause secondary leakage. The pipeline leakage stopping device optimizes and improves the structure of the existing pipeline leakage stopping tool, and has the advantages of simple structure, quick assembly, convenient use and excellent leakage stopping effect.
The pipeline leakage stopping method using the pipeline leakage stopping device provided by the invention can completely avoid hot processing modes such as welding of a leakage stopping site and the like, and is a simple and feasible field emergency leakage stopping method.
Drawings
FIG. 1 is a sectional view taken along the line A-A of a pipe leakage stopping device according to an embodiment of the present invention;
FIG. 2 is a view of the pipeline plugging device of FIG. 1 in the direction B;
FIG. 3 is a view of the pipe plugging device of FIG. 1 in the direction of C;
FIG. 4 is an enlarged view of a portion of FIG. 1 at I;
description of reference numerals:
1: a stuffing box; 11: a first pod; 111: a semi-cylinder;
112: a bottom cover; 12: a second pod; 13: a first half flange;
14: a first flange nut; 15: a housing nut; 2: packing;
3: packing and pressing a ring; 31: a first pressing block; 32: a second pressing block;
33: a second half flange; 34: a second flange nut; 4: a pipeline;
5: a leak site; 6: and (4) a metal soft wire.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described below with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "first", "second", and the like are used for the sake of clarity in describing the numbering of the product parts and do not represent any substantial difference. The directions of the upper part, the lower part, the left part and the right part are all based on the directions shown in the attached drawings. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be understood that, unless otherwise expressly stated or limited, the term "coupled" is used in a generic sense as defined herein, e.g., fixedly attached or removably attached or integrally attached; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 1 is a sectional view taken along the line A-A of a pipe leakage stopping device according to an embodiment of the present invention; FIG. 2 is a view of the pipeline plugging device of FIG. 1 in the direction B (i.e., right side view); fig. 3 is a C-direction view (i.e., a left side view) of the pipe leakage stoppage device in fig. 1, and as shown in fig. 1 to 3, an embodiment of the present invention provides a pipe leakage stoppage device, which includes a stuffing box 1, a packing 2 and a packing ring 3. The stuffing box 1 comprises a first shell 11 and a second shell 12 which are oppositely arranged, and the shape and the construction of the first shell 11 and the second shell 12 are the same. The first clamping shell 11 and the second clamping shell 12 are made of carbon steel materials, and the welding performance is superior to that of a cast iron pipeline.
The first clamping shell 11 and the second clamping shell 12 are connected in an involutory mode to form a cavity, the involutory connection can be achieved through bolt connection, and welding can be achieved under the condition that the involutory connection is allowed. The cavity comprises a cylindrical cavity for sleeving the pipeline 4 and an annular cavity attached to the outer side of the cylindrical cavity. The internal diameter of cylinder chamber equals the external diameter of pipeline 4, and the annular chamber is enclosed by the surface of pipeline 4 and the internal surface of first double-layered shell 11 and second double-layered shell 12 and establishes and forms, and packing 2 fills in the annular chamber. Packing 2 is formed by piling up the packing ring of a plurality of overlap joint stagger, and the size of every packing ring all matches with the size looks adaptation of annular chamber. The packing 2 can select a proper packing type according to a medium conveyed in the pipeline, such as a graphite packing, a carbon fiber packing, an asbestos packing or a tetrafluoro packing. In a specific embodiment, an oil-immersed graphite packing can be adopted, and the plugging effect is excellent.
As shown in fig. 1 and 2, the packing press ring 3 includes a first press block 31 and a second press block 32 which are oppositely disposed, and the first press block 31 and the second press block 32 are connected in an involutory manner, and the involutory connection may be a bolt connection, and may also be a welding connection if the conditions allow. The first pressing block 31 and the second pressing block 32 are connected to form a packing pressing ring 3, the packing pressing ring 3 is sleeved outside the pipeline 4, and the left end of the packing pressing ring 3 extends into the annular cavity to press the packing 2. The size of the packing compression ring 3 is matched with the size of the annular cavity, so that the packing compression ring can move in the annular cavity, and the packing 2 can be fully compacted, and the best packing compression ring is obtained by using the packing compression ring 3 with the thickness being 2-3mm smaller than that of the annular cavity. The thickness of the packing press ring 3 is the difference between the outer diameter and the inner diameter thereof, and the thickness of the annular cavity is the difference between the inner diameter of the packing box 1 and the outer diameter of the pipeline 4.
In addition, the butt joint surfaces of the first clamping shell 11 and the second clamping shell 12 and the butt joint surfaces of the first pressing block 31 and the second pressing block 32 are staggered at a preset angle. The oblique lines shown in fig. 2 indicate the abutting surfaces of the first pressing piece 31 and the second pressing piece 32, the oblique lines shown in fig. 3 indicate the abutting surfaces of the first clamping shell 11 and the second clamping shell 12, the preset angle in this embodiment is 90 °, and the preset angle may be other acute angles. Wherein, the butt joint face of first double-layered shell and second double-layered shell and the butt joint face of first briquetting and second briquetting are personally submitted 90 crisscross, make the atress more even, avoid packing to absorb the inflation after leaking liquid, push away the packing clamping ring, cause the secondary leakage.
According to the pipeline leakage stopping device provided by the embodiment of the invention, the first shell and the second shell are connected in a butt joint mode to form the packing box, the packing box is sleeved on a leakage pipeline, and then the packing of an annular cavity filled between the packing box and the leakage pipeline is compressed to realize the purpose of stopping a leakage point. By using the packing to replace leaking stoppage daub, the daub is prevented from flowing into the pipeline when the leak is large, and meanwhile, the stress at the fracture part of the pipeline can be quickly eliminated and the leakage is eliminated. The packing pressing ring is formed by connecting the first pressing block and the second pressing block in a closing mode, and one end of the packing pressing ring extends into the annular cavity to tightly press the packing. And the butt joint surface of the first clamping shell and the second clamping shell and the butt joint surface of the first pressing block and the second pressing block are staggered at a preset angle, so that the stress is uniform, and the packing is prevented from expanding after absorbing leakage liquid and jacking the packing pressing ring open to cause secondary leakage. The pipeline leakage stopping device optimizes and improves the structure of the existing pipeline leakage stopping tool, and has the advantages of simple structure, quick assembly, convenient use and excellent leakage stopping effect.
Further, as shown in fig. 1, each of the first pod 11 and the second pod 12 includes a semicircular tube 111 and a bottom cover 112 disposed at an axial direction left end of the semicircular tube 111. The semicircular pipe 111 actually selects a carbon steel pipe with the inner diameter 30-40mm larger than the outer diameter of the pipeline 4 as a manufacturing raw material, and the effective compression length of the stuffing box 1 is not less than 120 mm. Meanwhile, the length of the carbon steel pipe should ensure that the distance between a leakage point and the left and right end surfaces in the stuffing box 1 is 80-100mm so as to provide sufficient stuffing space. The carbon steel pipe is symmetrically broken along the radial direction, so that two semicircular pipes 111 are formed.
The contained angle between bottom 112 and the semicircle pipe 111 is the obtuse angle, and then makes packing 2 follow the direction of the certain angle of tilt right and fills the annular cavity, can increase the contact surface between packing 2 and the pipeline 4, improves the shutoff performance, increases the frictional force between packing 2 and the pipeline 4 simultaneously, plays the limited action to the position of packing box 1. The bottom cover 112 is radially and symmetrically broken by a carbon steel conical ring.
Further, as shown in fig. 1 and 3, the stuffing box 1 further includes a first flange provided at the right end in the axial direction of the semicircular pipe 111, and the first flange includes two first half flanges 13 provided on the first and second shells 11 and 12, respectively. The first flange is radially symmetrically broken apart, i.e. two first half-flanges 13 are formed.
As shown in fig. 1 and 2, the right end of the packing compression ring 3 is further provided with a second flange, and the second flange comprises two second half flanges 33 respectively arranged on the first pressing block 32 and the second pressing block 32. The second flange is radially symmetrically broken apart, i.e. two second half-flanges 33 are formed.
The abutting surfaces of the two first half-flanges 13 and the abutting surfaces of the two second half-flanges 33 are staggered by a preset angle, which is 90 ° in this embodiment. The first flange is detachably connected to the second flange to compress the packing compression ring 3 and the packing box 1. Specifically, the first flange is connected to the second flange by fastening bolts having a fastening margin of 30-50 mm.
Further, as shown in fig. 3, both ends in the radial direction of the first half flange 13 are provided with first flange nuts 14, that is, along the edge of the first flange symmetrically broken, the first flange nuts 14 are fixedly connected to the upper and lower ends in the radial direction of the two first half flanges 13 on the left and right sides, and four first flange nuts 14 are fixedly connected in total. The first flange is joined by bolting the first flange nut 14 at the upper end of the left first flange half 13 to the first flange nut 14 at the upper end of the right first flange half 13, and bolting the first flange nut 14 at the lower end of the left first flange half 13 to the first flange nut 14 at the lower end of the right first flange half 13.
Similarly, as shown in fig. 2, the second flange half 33 is provided at both ends in the radial direction with second flange nuts 34, that is, along the edge of the second flange symmetrically broken, and the second flange nuts 34 are fixedly connected to the upper and lower ends in the radial direction of the two second flange halves 33 on the left and right sides, and four second flange nuts 34 are fixedly connected in total. The second flange is joined by bolting the second flange nut 34 at the upper end of the left second half flange 33 to the second flange nut 34 at the upper end of the right second half flange 33, and bolting the second flange nut 34 at the lower end of the left second half flange 33 to the second flange nut 34 at the lower end of the right second half flange 33.
Further, as shown in fig. 1 and 3, the two ends in the radial direction of the semicircular tubes 111 are provided with the shell nuts 15, that is, along the edge of the circular tube which is symmetrically broken, the shell nuts 15 are fixedly connected to the upper end and the lower end in the radial direction of the two semicircular tubes 111 on the left side and the right side, and four shell nuts 15 are fixedly connected in total. In the present embodiment, four shell nuts 15 distributed along one radial direction are used as one shell nut assembly, and two sets of shell nut assemblies are arranged along the axial direction of the semicircular tube 111, so that the connection between the first clamping shell 11 and the second clamping shell 12 is more tight.
Further, as shown in fig. 1 and 4, a groove for embedding the soft metal wire 6 is provided on one side of the bottom cover 112 facing the pipe 4. Specifically, the number of grooves is 1-2. The soft metal wire 6 is embedded in the groove, so that preliminary limit can be performed on the stuffing box before the stuffing box is filled, and the end face sealing can be guaranteed by the stuffing box and the pipeline in a certain gap after the stuffing box is filled.
Furthermore, the end face of the left end of the packing compression ring 3 facing the packing 2 is an inclined plane. Specifically, the bevel is inclined 15 ° to the left as shown in fig. 1. Through the mutual extrusion of the inclination between packing clamping ring 3 and bottom 112, guarantee that the packing can compress tightly the compaction.
Further, each ring is mitered at 45 °, and the next ring is offset from the previous ring by an angle of at least 90 °, preferably 120 °.
The invention also provides a pipeline plugging method using the pipeline plugging device, which comprises the following steps:
manufacturing a stuffing box 1 and a stuffing compression ring 3 according to the outer diameter of the leaked pipeline 4;
the first clamping shell 11 and the second clamping shell 12 are connected in an involutory mode and sleeved on the leakage part 5, so that the leakage part 5 is completely wrapped in the cylindrical cavity;
packing 2 is filled in the annular cavity;
the first pressing block 31 and the second pressing block 32 are connected in an involutive manner and sleeved on the leaked pipeline 4 to form a packing pressing ring 3, and the butting surface of the first clamping shell 11 and the second clamping shell 12 and the butting surface of the first pressing block 31 and the second pressing block 32 are staggered at a preset angle;
and the left end of the packing compression ring 3 is extended into the annular cavity to compress the packing 2 until the leakage is stopped.
Further, after the first clamping shell 11 and the second clamping shell 12 are connected in a matched mode and before the packing set 2 is packed in the annular cavity, the method further comprises the following steps: the metal soft wire 6 is embedded in the groove.
Further, after the leakage is stopped, the method also comprises the following steps: and (4) fixedly sealing the pipeline plugging device by using a normal-temperature curing material. Specifically, the normal temperature curing material includes cement, glass fiber reinforced plastic and epoxy resin, and other materials capable of realizing curing under normal temperature conditions can also be adopted.
The method for plugging a pipeline in the embodiment is further described below with reference to a specific working process.
Firstly, a stuffing box 1 is manufactured. According to the outer diameter of the leaked pipeline 4, a carbon steel pipe with the inner diameter 30-40mm larger than the outer diameter of the pipeline 4 is selected and is symmetrically broken along the radial direction to form two semi-cylinders 111. Then, a bottom cover 112 is welded to the left end of the semi-cylinder 111, a first flange 13 is fixedly connected to the right end of the semi-cylinder 111, a first flange nut 14 is welded to the first flange 13, and a case nut 15 is welded to the cylindrical body of the semi-cylinder 111. And finally, machining 1-2 grooves on the contact surface of the bottom cover 112 facing the pipeline 4, and finishing the manufacturing of the stuffing box 1.
And then manufacturing a packing press ring 3. According to the outer diameter of the leaked pipeline 4 and the inner diameter of the semicircular pipe 111, a carbon steel pipe with the thickness matched with the size of the annular cavity is selected and radially broken to form a first pressing block 31 and a second pressing block 32. And then processing the left end of the packing compression ring 3 to process a 15-degree inclined plane towards the inner side of the annular cavity. And then welding a second half flange 33 at the right end of the packing press ring 3, welding a second flange nut 34 on the second half flange 33, and finishing the manufacturing of the packing press ring 3.
When in use, after the pressure is reduced, the metal soft wire 6 is embedded in the groove of the bottom cover 112; the first and second casings 11, 12 are joined by bolting (if welding is allowed) to the leaking pipe 4 to form a stuffing box 1; and is fixed at the corresponding leak 5 so that the leak 5 is entirely enclosed in the stuffing box 1. And then the first pressing block 31 and the second pressing block 32 are connected by bolt pairing (welding is adopted if the conditions allow) to form the packing pressing ring 3. And then arranging the oil-immersed graphite packing in a 45-degree oblique staggered manner, filling the oil-immersed graphite packing into a stuffing box 1, and preliminarily compacting the oil-immersed graphite packing. And then, installing the packing press ring 3 on the assembled packing box 1 by using a fastening bolt, wherein the butt joint surfaces of the packing press ring 3 and the packing box 1 are staggered by 90 degrees, and starting to press the packing 2. And finally, uniformly screwing the fastening bolts on the packing compression ring 3, gradually compressing the packing until leakage does not occur, and reducing the pressure for use after the pressure test is qualified. Meanwhile, the pipeline plugging device can be sealed by normal temperature curing materials such as cement or glass fiber reinforced plastic according to the condition, and the original pressure can be completely recovered for use after the curing period.
According to the pipeline leakage stopping device provided by the invention, the first shell and the second shell are connected in a matched mode to form the packing box, the packing box is sleeved on the leakage pipeline, and then the packing of the annular cavity filled between the packing box and the leakage pipeline is compressed to stop a leakage point. By using the packing to replace leaking stoppage daub, the daub is prevented from flowing into the pipeline when the leak is large, and meanwhile, the stress at the fracture part of the pipeline can be quickly eliminated and the leakage is eliminated. The packing pressing ring is formed by connecting the first pressing block and the second pressing block in a closing mode, and one end of the packing pressing ring extends into the annular cavity to tightly press the packing. And the butt joint face of the first clamping shell and the second clamping shell and the butt joint face of the first pressing block and the second pressing block are in a preset angle staggered mode, so that the stress is more uniform, and the packing is prevented from expanding after absorbing leakage liquid and jacking the packing pressing ring to cause secondary leakage. The pipeline leakage stopping device optimizes and improves the structure of the existing pipeline leakage stopping tool, and has the advantages of simple structure, quick assembly, convenient use and excellent leakage stopping effect.
The pipeline leakage stopping method using the pipeline leakage stopping device provided by the invention can completely avoid hot processing modes such as welding of a leakage stopping site and the like, and is a simple and feasible field emergency leakage stopping method.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A pipeline leakage stopping device is characterized by comprising a packing box, a packing and a packing compression ring; the stuffing box comprises a first clamping shell and a second clamping shell which are oppositely arranged, and the first clamping shell and the second clamping shell are connected in a involutory mode to form a cavity; the cavity comprises a cylindrical cavity for sleeving a pipeline and an annular cavity attached to the outer side of the cylindrical cavity, and the packing is filled in the annular cavity; the packing compression ring comprises a first pressing block and a second pressing block which are oppositely arranged, and the first pressing block and the second pressing block are connected in an involutory mode to form the packing compression ring sleeved on the pipeline; one end of the packing compression ring, which faces the packing, extends into the annular cavity to compress the packing; the end face of the packing compression ring facing the packing is an inclined plane; the butting surface of the first clamping shell and the second clamping shell and the butting surface of the first pressing block and the second pressing block are staggered at a preset angle; the first clamping shell and the second clamping shell respectively comprise a semicircular pipe and a bottom cover arranged at one end of the semicircular pipe in the axial direction, and an included angle between the bottom cover and the semicircular pipe is an obtuse angle; wherein the inner diameter of the semicircular pipe is 30-40mm larger than the outer diameter of the pipeline; each packing adopts 45 scarf joints, and the next packing ring is staggered with the last packing ring by 120 degrees in staggered angle.
2. The pipe plugging device according to claim 1, wherein the stuffing box further comprises a first flange provided at the other end of the semicircular pipe in the axial direction, the first flange comprising two first half flanges provided on the first and second shells, respectively;
a second flange is arranged at one end of the packing compression ring, which is far away from the packing, and the second flange comprises two second half flanges which are respectively arranged on the first pressing block and the second pressing block; the first flange is detachably connected to the second flange so as to compress the packing compression ring and the packing box;
the butt joint surfaces of the two first half flanges and the butt joint surfaces of the two second half flanges are staggered at a preset angle.
3. The pipe leakage blocking device of claim 2, wherein first flange nuts are disposed at both ends of the first half flange in the radial direction, and second flange nuts are disposed at both ends of the second half flange in the radial direction.
4. The pipe plugging device according to claim 1, wherein both ends of the semicircular pipe in the radial direction are provided with shell nuts.
5. The pipeline leakage blocking device according to claim 1, wherein a groove is formed in one side, facing the pipeline, of the bottom cover, and the groove is used for embedding a soft metal wire.
6. A method of plugging a pipeline using the pipeline plugging device according to any one of claims 1 to 5, comprising the steps of:
the first clamping shell and the second clamping shell are connected in an involutory mode and sleeved at a leakage position, so that the leakage position is completely wrapped in the cylindrical cavity;
packing the packing in the annular cavity;
the first pressing block and the second pressing block are connected in an involutory mode and sleeved on a leakage pipeline to form the packing pressing ring, and the butting surface of the first clamping shell and the second clamping shell and the butting surface of the first pressing block and the second pressing block are staggered at a preset angle;
and one end of the packing compression ring is extended into the annular cavity to compress the packing until the leakage is stopped.
7. The method of plugging a pipeline according to claim 6, further comprising the steps of, after said mating joining said first and second pods, prior to said packing being packed in said annular cavity:
and embedding the metal soft wire in the groove on the bottom cover.
8. The method for plugging a pipeline according to claim 6, further comprising the following steps after the leakage is stopped:
and (4) fixedly sealing the pipeline plugging device by using a normal-temperature curing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533498.2A CN111322486B (en) | 2018-12-14 | 2018-12-14 | Pipeline leakage stopping device and leakage stopping method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533498.2A CN111322486B (en) | 2018-12-14 | 2018-12-14 | Pipeline leakage stopping device and leakage stopping method thereof |
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| Publication Number | Publication Date |
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| CN111322486A CN111322486A (en) | 2020-06-23 |
| CN111322486B true CN111322486B (en) | 2021-10-22 |
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| CN201811533498.2A Active CN111322486B (en) | 2018-12-14 | 2018-12-14 | Pipeline leakage stopping device and leakage stopping method thereof |
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| CN205592566U (en) * | 2016-05-12 | 2016-09-21 | 青岛理工大学 | But tuningout formula submarine pipeline repairs connecting device fast |
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| US20180051837A1 (en) * | 2016-08-18 | 2018-02-22 | Robert Guizzo | Rigid Self-Sealing Pipe Clamp System and Method |
| US10364929B2 (en) * | 2017-03-14 | 2019-07-30 | Krausz Industries Ltd. | Pipe coupling encapsulation assembly |
| CN207421629U (en) * | 2017-11-10 | 2018-05-29 | 中昊晨光化工研究院有限公司 | A kind of flange pressurized leak stoppage frock |
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| CN205592566U (en) * | 2016-05-12 | 2016-09-21 | 青岛理工大学 | But tuningout formula submarine pipeline repairs connecting device fast |
| CN206369047U (en) * | 2016-12-03 | 2017-08-01 | 许川 | A kind of material filling type Pipe leakage stopper |
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