CN112944099A - External leaking stoppage reinforcing device for submarine pipeline - Google Patents
External leaking stoppage reinforcing device for submarine pipeline Download PDFInfo
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- CN112944099A CN112944099A CN201911262169.3A CN201911262169A CN112944099A CN 112944099 A CN112944099 A CN 112944099A CN 201911262169 A CN201911262169 A CN 201911262169A CN 112944099 A CN112944099 A CN 112944099A
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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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- 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
- F16L55/1705—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 with a substantially radial tightening member
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Abstract
The invention relates to an external leaking stoppage reinforcing device for a submarine pipeline, which is applied to underwater plugging reinforcement of submarine pipeline defects or leaking point pipe sections and is particularly suitable for deepwater submarine pipelines. The device mainly comprises a special bolt, a right shell, a clamping device, a left shell, a semi-sealing ring, a guide sleeve, a guide body, a middle bolt, a sealing strip and an anode block; the right shell and the left shell form a mechanical structure surrounding the original pipeline through special-shaped bolts and middle bolts, the semi-sealing rings and the sealing strips form a sealing cavity, and the clamping device firmly fixes the device on the original pipeline. The underwater emergency maintenance device has the characteristics of easy underwater installation, no limitation of water depth, permanent sealing and fixing of a pipeline leakage point, low offshore operation cost and the like, and is particularly suitable for underwater emergency maintenance of deep-water submarine pipelines.
Description
Technical Field
The invention relates to a submarine pipeline external leaking stoppage reinforcing device in the field of pipeline repairing devices, which is applied to underwater plugging reinforcement of submarine pipeline defects or leaking point pipe sections and is particularly suitable for deepwater submarine pipelines.
Background
In-service submarine oil and gas transmission pipelines, due to the influence of factors such as corrosion, external force and the like, defects or damages and even leakage may occur at a certain position of the pipelines, and the defects of the area of the pipelines need to be plugged, and at present, the defects are mostly welded on water or welded and plugged in a dry maintenance cabin.
Chinese patent CN102943942A discloses a novel ocean pipeline leakage blocking device and method, comprising a blocking jacket, a valve and a drainage pipeline, wherein the blocking jacket is fixedly connected with the upper part and the lower part through bolts, the blocking jacket is provided with a blocking jacket outlet, the blocking jacket outlet is provided with a valve, one end of the drainage pipeline is connected with the valve, and the other end of the drainage pipeline is connected with an oil leakage recovery point; and a sealing ring is arranged at the joint of the inner wall of the plugging jacket and the wall surface of the marine pipeline. The plugging method comprises the following steps: firstly, determining the accurate position of a leakage point of an ocean pipeline, and then flushing silt at the lower part of the ocean pipeline at the leakage point by using a water conservancy flushing device to form a pit slot capable of accommodating and blocking the lower part of a jacket; secondly, moving the lower part of a prepared plugging jacket which is adaptive to the diameter of the marine pipeline into a pit slot, and then tightly connecting the upper part and the lower part of the plugging jacket to the outside of the marine pipeline by using thickened bolts to ensure that sealing rings on the edge layers at two ends of the plugging jacket are tightly attached to the outer wall of the marine pipeline to form a closed annular space; step three, the leaked oil at the leakage point overflows through a valve and reaches an oil leakage recovery point on the sea surface along a drainage pipeline by means of the pressure of the leaked oil; and step four, closing the valve after the installation and debugging of the plugging jacket are finished, withdrawing the drainage pipeline, and keeping the plugging jacket and the valve at a leakage point to maintain the pipeline to continue to operate. According to the invention, the plugging jacket can form a closed area after being connected and compressed, the leaked oil can be recovered to an leaked oil recovery point only through one channel of the valve and the drainage pipeline, and is not influenced by the flow of seawater, and the leaked oil recovery efficiency is improved compared with the prior art. After construction is completed, the plugging jacket is left at the leakage point and is not taken back, and only the drainage pipeline needs to be recovered after the valve is closed, so that the operation of welding the pipeline under water is avoided, and the potential safety hazard of maintenance is reduced.
However, the invention is only suitable for shallow water areas, is difficult to realize in deep water areas, and has the plugging strength which is difficult to meet the high-strength requirement under water.
Disclosure of Invention
The invention aims to provide a device for externally leaking stoppage and reinforcing a submarine pipeline, aiming at the defects of the prior art. The device has the characteristics of easy underwater installation, no limitation of water depth, reliable leak point plugging, permanent sealing, capability of being clamped on an original pipeline and the like, and is particularly suitable for underwater emergency maintenance of the submarine pipeline.
The technical scheme of the invention is as follows:
the utility model provides a submarine pipeline outer of tubes leaking stoppage reinforcing apparatus, includes left casing and the right casing that the pair was disposed and with left casing and right casing complex fastening bolt group, the solid device of card, sealing strip, semi-seal circle, wherein:
the middle position between the right shell and the left shell matching surface is respectively processed with a semi-cylindrical groove and a semi-conical groove which are corresponding to each other and are the same, and the half-cylindrical groove and the half-conical groove are sequentially processed from the end part: the semi-cylindrical groove and the semi-conical groove are matched with the clamping device, the semi-cylindrical groove is matched with the original pipeline, the semi-cylindrical groove is matched with the semi-sealing ring, the semi-cylindrical groove is matched with the original pipeline, the large semi-cylindrical groove is matched with the original pipeline, and all the semi-cylindrical grooves and the conical grooves at two ends are symmetrical and are the same central line; sealing grooves matched with the sealing strips are respectively arranged on the outer sides of the stepped semi-cylindrical groove and the conical groove and on the joint surfaces of the right shell and the left shell, the sum of the depths of the corresponding sealing grooves on the right shell and the left shell is smaller than the height of the sealing strips, and the end parts of the two ends of each sealing groove are respectively positioned in the middle of the semi-cylindrical groove where the semi-sealing ring is positioned; two guide sleeves are symmetrically arranged on the upper parts of the right shell and the left shell respectively, the guide sleeves are matched with the guide bodies, and the guide sleeves and the guide bodies are perpendicular to the central line of the original pipeline; semi-sealing rings are symmetrically embedded in corresponding semi-cylindrical grooves on the right shell and the left shell, and the end parts of the semi-sealing rings protrude out of the combined surface of the right shell and the left shell; sealing strips are respectively embedded in the sealing grooves on the right shell and the left shell, and the end parts of the two ends of each sealing strip are respectively provided with a recess matched with the semi-sealing ring and are in interference fit; the clamping and fixing devices are arranged at two ends of the right shell and the left shell and are respectively matched with the corresponding end surfaces, the semi-cylindrical grooves and the semi-conical grooves on the right shell and the left shell.
The above scheme further comprises:
the clamping device comprises a guide block, a wedge block, a spring, an end cover d, a lock rod, a lock shaft and a deflector rod; the end cover d is of a semicircular structure, is matched with the right shell and the left shell and is respectively fixed at two ends of the right shell and the left shell, the outer circular surface is sequentially processed into a step-shaped large-diameter semi-cylindrical surface, a semi-cylindrical surface and a semi-conical surface, the large-diameter semi-cylindrical surface protrudes out of the right shell and the left shell, the semi-cylindrical surface is matched with corresponding semi-cylindrical grooves on the right shell and the left shell, the semi-conical surface is matched with the semi-conical grooves on the right shell and the left shell, and the semi-cylindrical grooves in clearance fit with the original pipeline are processed inside the end cover d; the guide blocks are symmetrically fixed on the inner end face of the end cover d and matched with the end faces of the wedge blocks, and the spring is arranged in a blind groove matched with the inner end face of the end cover d and is provided with a cavity rotationally matched with the lock rod; the deflector rod is arranged in a cavity which is matched with the outer end face of the end cover d in a rotating way; the wedge block is in a cone shape, the inner groove is provided with threads and matched with an original pipeline, the outer surface is in a cone shape and matched with the semi-conical grooves corresponding to the right shell and the left shell, the tail end of the wedge block is provided with a cone-shaped tail wing, the outer surface of the tail wing is matched with the semi-conical grooves corresponding to the right shell and the left shell, the inner surface of the tail wing is matched with the semi-conical surface of the end cover d, the end surface of the tail wing is matched with the stepped end surface of the end cover d, an arc-shaped groove for rotation of the tail wing is formed in the position corresponding to the lock rod, the wedge block is provided with a blind groove matched with the spring, and the two.
A wedge block locking mechanism consisting of a locking rod, a locking shaft and a deflector rod is arranged corresponding to the radial centerline position of the wedge block, the locking shaft is matched with the through groove on the end cover d, and the locking rod and the deflector rod are respectively fixed at the two ends of the locking shaft; two or more springs and a set of wedge block locking mechanisms are symmetrically arranged corresponding to each wedge block.
Four bolt grooves at the corners of the left shell are tightly matched with the special-shaped bolts, stepped grooves are arranged at the four corners of the right shell corresponding to the special-shaped bolts, a large-caliber groove of each stepped groove is tightly matched with a polished rod part of the special-shaped bolt, and a small-caliber groove is in clearance fit with a lead screw part of the special-shaped bolt; grooves which are in clearance fit with the middle bolts are respectively arranged at the middle positions of the right shell and the left shell; relative to the opposite surface of the joint surface of the right shell and the left shell, a plane parallel to the joint surface is arranged on the right shell and matched with the corresponding fixed nut surfaces of the special bolt and the middle bolt, the fixed nuts of the special bolt and the middle bolt are fixed on the right shell by screws, and an anode block is arranged in the middle of the plane; relative to the opposite surface of the joint surface of the right shell and the left shell, a plane parallel to the joint surface is arranged on the left shell and matched with the corresponding movable nut surfaces of the special bolt and the middle bolt, and an anode block is arranged in the middle of the plane.
Two ends of the guide body are provided with limiting lifting rings; when the right shell and the left shell are respectively attached to the limiting lifting rings on the guide body, the distance between the special bolt fixed on the left shell, the end part of the screw rod of the middle bolt and the joint surface of the right shell is larger than the outer diameter of the original pipeline.
The semi-seal ring is made of graphite, the end faces of the two butted semi-seal rings are inclined, and the protruding height of the corresponding inner diameter position is larger than that of the corresponding outer diameter position.
The sealing strip is made of graphite packing.
The fastening bolt group comprises a special bolt, a middle bolt and a nut.
The special bolt is sequentially provided with a cylindrical polished rod, a conical polished rod and a screw rod from the end of the fixing nut, and the outer diameter of the cylindrical polished rod is larger than that of the screw rod.
The middle bolt and nut are fixed with the screw rod, the screw rod is composed of a cylindrical polished rod and a screw rod, and the outer diameter of the cylindrical polished rod is the same as or different from that of the screw rod.
The invention has the following effects: the seal of the invention adopts graphite material, and reliable and permanent seal is realized through a special structural style; the arrangement of the special-shaped bolt simplifies the integral structure of the device, ensures the plugging reliability, reduces the underwater construction difficulty and is easy to automate underwater construction; the arrangement of the clamping device ensures that the plugging device can be reliably fixed on the original pipeline; the release of the clamping device is suitable for the operation of an underwater robot or a diver; the whole technical scheme has the characteristics of easy underwater installation, no limitation of water depth, permanent sealing and fixing of a leakage point, low offshore operation cost and the like, and is particularly suitable for underwater emergency maintenance of deep-water submarine pipelines.
Drawings
FIG. 1 is a schematic view of an external plugging and reinforcing device for a submarine pipeline;
FIG. 2 is a view A-A of FIG. 1;
FIG. 3 is a view B-B of FIG. 2;
in the figure: 1. the special bolt comprises a special bolt, 2, a right shell, 3, a clamping device, 4, a left shell, 5, a semi-sealing ring, 6, a guide sleeve, 7, a guide body, 8, a middle bolt, 9, a sealing strip, 10, an anode block, 11, an original pipeline, 3a, a guide block, 3b, a wedge block, 3c, a spring, 3d, an end cover, 3e, a lock rod, 3f, a lock shaft, 3g and a deflector rod.
Detailed Description
The invention will now be further described with reference to the accompanying drawings 1, 2 and 3 of the specification:
example 1:
referring to fig. 1 and 2, a submarine pipeline outer pipe leakage stoppage reinforcing apparatus includes left casing 4 and right casing 2 that dispose in pairs and with left casing 4 and right casing 2 complex fastening bolt group, clamping device 3, sealing strip 9, semi-seal ring 5, wherein:
the middle position between the right shell 2 and the left shell 4 opposite joint surfaces is respectively processed with a semi-cylindrical groove and a semi-conical groove which are corresponding and same with each other, and the two grooves are sequentially from the end part: the semi-cylindrical groove and the semi-conical groove are matched with the clamping device 3 in a stepped manner, the semi-cylindrical groove is matched with the original pipeline 11, the semi-cylindrical groove is matched with the semi-sealing ring 5, the semi-cylindrical groove is matched with the original pipeline 11, the large semi-cylindrical groove is matched with the original pipeline 11, and all the semi-cylindrical grooves and the conical grooves in the stepped manner at two ends are symmetrical and are the same central line; sealing grooves matched with the sealing strips 9 are respectively arranged on the outer sides of the stepped semi-cylindrical grooves and the conical grooves and on the combined surfaces of the right shell 2 and the left shell 4, the sum of the depths of the corresponding sealing grooves on the right shell 2 and the left shell 4 is smaller than the height of the sealing strips 9, and the end parts of the two ends of each sealing groove are respectively positioned in the middle of the semi-cylindrical groove where the semi-sealing ring 5 is positioned; two guide sleeves 6 are symmetrically arranged on the upper parts of the right shell 2 and the left shell 4 respectively, the guide sleeves 6 are matched with the guide bodies 7, and the guide sleeves 6 and the guide bodies 7 are perpendicular to the central line of the original pipeline 11; semi-sealing rings 5 are symmetrically embedded in corresponding semi-cylindrical grooves on the right shell 2 and the left shell 4, and the end parts of the semi-sealing rings 5 are protruded out of the combined surface of the right shell 2 and the left shell 4; sealing strips 9 are respectively embedded in sealing grooves on the right shell 2 and the left shell 4, and the end parts of two ends of each sealing strip 9 are respectively provided with a recess matched with the semi-sealing ring 5 and are in interference fit; the clamping and fixing devices 3 are arranged at two ends of the right shell 2 and the left shell 4 and are respectively matched with the corresponding end surfaces, the semi-cylindrical grooves and the semi-conical grooves on the right shell 2 and the left shell 4.
Example 2
On the basis of the embodiment 1, referring to fig. 3, the clamping device 3 includes a guide block 3a, a wedge block 3b, a spring 3c, an end cover 3d, a lock rod 3e, a lock shaft 3f and a shift lever 3 g; the end cover 3d is of a semicircular structure, is matched with the right shell 2 and the left shell 4 and is respectively fixed at two ends of the right shell and the left shell, the outer circular surface is sequentially processed into a step-shaped large-diameter semi-cylindrical surface, a semi-cylindrical surface and a semi-conical surface, the large-diameter semi-cylindrical surface protrudes out of the right shell 2 and the left shell 4, the semi-cylindrical surface is matched with corresponding semi-cylindrical grooves on the right shell 2 and the left shell 4, the semi-conical surface is matched with semi-conical grooves on the right shell 2 and the left shell 4, and a semi-cylindrical groove in clearance fit with the original pipeline 11 is processed inside the end cover 3 d; the guide blocks 3a are symmetrically fixed on the inner end face of the end cover 3d and matched with the end face of the wedge block 3b, and the spring 3c is arranged in a blind groove matched with the inner end face of the end cover 3d and is provided with a cavity rotationally matched with the lock rod 3 e; the deflector rod 3g is arranged in a cavity which is matched with the outer end face of the end cover 3d in a rotating way; the wedge 3b is in a cone shape, the inner groove is provided with threads and matched with the original pipeline 11, the outer surface is in a cone shape and matched with the semi-conical grooves corresponding to the right shell 2 and the left shell 4, the tail end of the wedge 3b is provided with a cone-shaped tail wing, the outer surface of the tail wing is matched with the semi-conical grooves corresponding to the right shell 2 and the left shell 4, the inner surface of the tail wing is matched with the semi-conical surface of the end cover 3d, the end surface of the tail wing is matched with the stepped end surface of the end cover 3d, an arc-shaped groove for rotation of the tail wing is formed in the position corresponding to the lock rod 3e, the wedge 3b is provided with a blind groove matched with the spring 3c, and the two side surfaces of the wedge 3b are matched with the.
Furthermore, a wedge block locking mechanism consisting of a lock rod 3e, a lock shaft 3f and a deflector rod 3g is arranged corresponding to the radial centerline position of the wedge block 3b, the lock shaft 3f is matched with a through groove on an end cover 3d, and the lock rod 3e and the deflector rod 3g are respectively fixed at the two ends of the lock shaft 3 f; two or more springs 3c and a set of wedge locking mechanism are symmetrically arranged corresponding to each wedge 3 b.
Example 3
On the basis of the embodiment 1 or 2, further:
four bolt grooves at the corner part of the left shell 4 are tightly matched with the special bolt 1, stepped grooves are arranged at the four corner parts of the right shell 2 corresponding to the special bolt 1, a large-caliber groove of each stepped groove is tightly matched with a polished rod part of the special bolt 1, and a small-caliber groove is in clearance fit with a screw rod part of the special bolt 1; grooves which are in clearance fit with the middle bolts 8 are respectively arranged at the middle positions of the right shell 2 and the left shell 4; relative to the opposite surface of the joint surface of the right shell 2 and the left shell 4, a plane parallel to the joint surface is arranged on the right shell 2 and is matched with the corresponding fixed nut surfaces of the special bolt 1 and the middle bolt 8, the fixed nuts of the special bolt 1 and the middle bolt 8 are fixed on the right shell 2 by screws, and an anode block 10 is arranged in the middle of the plane; relative to the opposite surface of the joint surface of the right shell 2 and the left shell 4, a plane parallel to the joint surface is arranged on the left shell 4 and matched with the corresponding movable nut surfaces of the special bolt 1 and the middle bolt 8, and an anode block 10 is arranged in the middle of the plane.
Two ends of the guide body 7 are provided with limiting lifting rings; when the right shell 2 and the left shell 4 are respectively attached to the limiting rings on the guide body 7, the distance between the screw rod end parts of the special bolt 1 and the middle bolt 8 fixed on the left shell 4 and the joint surface of the right shell 2 is larger than the outer diameter of the original pipeline 11.
The semi-seal ring 5 is made of graphite, the end faces of the two butted semi-seal rings 5 are inclined, and the protruding height of the corresponding inner diameter position is larger than that of the corresponding outer diameter position.
The sealing strip 9 is made of graphite packing.
The fastening bolt group comprises a special bolt 1, a middle bolt 8 and a nut.
The special bolt 1 is sequentially provided with a cylindrical polished rod, a conical polished rod and a screw rod from the end of the fixed nut, and the outer diameter of the cylindrical polished rod is larger than that of the screw rod.
The middle bolt 8 is fixed with a screw rod through a nut, the screw rod is composed of a cylindrical polished rod and a screw rod, and the outer diameter of the cylindrical polished rod is the same as or different from that of the screw rod.
Example 4
The invention relates to an external leaking stoppage reinforcing device for a submarine pipeline, which comprises a special bolt 1, a right shell 2, a clamping device 3, a left shell 4, a semi-sealing ring 5, a guide sleeve 6, a guide body 7, a middle bolt 8, a sealing strip 9 and an anode block 10.
Right casing 2 and left casing 4 are disposed in pairs, are mutually supported, and corresponding and the same echelonment semicircle column hole and half taper hole are processed respectively to the intermediate position between right casing 2 and the 4 faying faces of left casing, and the end begins to be in proper order: the semi-cylindrical hole and the semi-conical hole in the ladder shape matched with the clamping device 3, the semi-cylindrical hole matched with the original pipeline 11, the semi-cylindrical hole matched with the semi-sealing ring 5, the semi-cylindrical hole matched with the original pipeline 11 and the big semi-cylindrical hole matched with the original pipeline 11, wherein all the semi-cylindrical holes in the ladder shape and the conical holes in the two ends are symmetrical and are the same central line; sealing grooves matched with the sealing strips 9 are respectively arranged on the outer sides of the stepped semi-cylindrical holes and the conical holes and on the combined surfaces of the right shell 2 and the left shell 4, the sum of the depths of the corresponding sealing grooves on the right shell 2 and the left shell 4 is smaller than the height of the sealing strips 9, and the end parts of the two ends of each sealing groove are respectively positioned in the middle of the semi-cylindrical hole where the semi-sealing ring 5 is positioned; four bolt holes at the corner part of the left shell 4 are tightly matched with the special bolt 1, stepped holes are arranged at the four corner parts of the right shell 2 corresponding to the special bolt 1, a large hole is tightly matched with a polished rod part of the special bolt 1, and a small hole is in clearance fit with a screw rod part of the special bolt 1; holes matched with the middle bolts 8 are respectively arranged at the middle positions of the right shell 2 and the left shell 4 and are in clearance fit; relative to the opposite surface of the joint surface of the right shell 2 and the left shell 4, a plane parallel to the joint surface is arranged on the right shell 2 and is matched with the corresponding fixed nut surfaces of the special bolt 1 and the middle bolt 8, the fixed nuts of the special bolt 1 and the middle bolt 8 are fixed on the right shell 2 by screws, and an anode block 10 is arranged in the middle of the plane; relative to the opposite surface of the joint surface of the right shell 2 and the left shell 4, a plane parallel to the joint surface is arranged on the left shell 4 and matched with the corresponding movable nut surfaces of the special bolt 1 and the middle bolt 8, and an anode block 10 is arranged in the middle of the plane; two guide sleeves 6 are symmetrically arranged on the upper parts of the right shell 2 and the left shell 4 respectively, the guide sleeves 6 are matched with the guide bodies 7, the guide sleeves 6 and the guide bodies 7 are perpendicular to the central line of the original pipeline 11, and two ends of each guide body 7 are provided with limiting hoisting rings; the semi-seal rings 5 are made of graphite and are symmetrically embedded in corresponding semi-cylindrical holes in the right shell 2 and the left shell 4 respectively, the end parts of the semi-seal rings protrude out of the joint surface of the right shell 2 and the left shell 4, the end surfaces of the two butted semi-seal rings 5 are oblique, and the protruding height of the corresponding inner diameter part is greater than that of the corresponding outer diameter part; the sealing strips 9 are made of graphite packing and are respectively embedded in sealing grooves on the right shell 2 and the left shell 4, and the end parts of the two ends are respectively provided with a recess matched with the semi-sealing ring 5 and are in interference fit; the clamping and fixing devices 3 are arranged at two ends of the right shell 2 and the left shell 4 and are respectively matched with the corresponding end surfaces, the semi-cylindrical holes and the semi-conical holes of the right shell 2 and the left shell 4.
Wherein:
the clamping device 3 consists of a guide block 3a, a wedge block 3b, a spring 3c, an end cover 3d, a lock rod 3e, a lock shaft 3f and a deflector rod 3 g; the end cover 3d is of a semicircular structure, is matched with the right shell 2 and the left shell 4 and is respectively fixed at two ends of the right shell and the left shell, the outer circular surface is sequentially processed into a step-shaped large semi-cylindrical surface, a semi-cylindrical surface and a semi-conical surface, the large semi-cylindrical surface protrudes out of the right shell 2 and the left shell 4, the semi-cylindrical surface is matched with corresponding semi-cylindrical holes on the right shell 2 and the left shell 4, the semi-conical surface is matched with semi-conical holes on the right shell 2 and the left shell 4, and the interior of the end cover 3d is processed with a semi-cylindrical hole in clearance fit with the original pipeline 11; the inner end face of the end cover 3d is symmetrically fixed with the guide blocks 3a and matched with the end face of the wedge block 3b, and the inner end face of the end cover 3d is provided with a blind hole matched with the spring 3c and a cavity suitable for the rotation of the lock rod 3 e; a cavity suitable for the rotation of the deflector rod 3g is arranged on the outer end face of the end cover 3 d; the wedge 3b is in a cone shape, an inner hole is provided with a thread and is matched with the original pipeline 11, the outer surface is in a cone shape and is matched with semi-conical holes corresponding to the right shell 2 and the left shell 4, the tail end of the wedge 3b is provided with a cone-shaped tail wing, the outer surface of the tail wing is matched with the semi-conical holes corresponding to the right shell 2 and the left shell 4, the inner surface of the tail wing is matched with a semi-conical surface of an end cover 3d, the end surface of the tail wing is matched with a step end surface of the end cover 3d, an arc-shaped groove for rotation of the tail wing is formed in the position corresponding to the lock rod 3e, the wedge 3b is provided with a blind hole matched with the spring 3c, and the two side surfaces of the wedge 3; a wedge block locking mechanism consisting of a locking rod 3e, a locking shaft 3f and a deflector rod 3g is arranged corresponding to the radial center line position of the wedge block 3b, the locking shaft 3f is matched with a through hole on an end cover 3d, and the locking rod 3e and the deflector rod 3g are respectively fixed at the two ends of the locking shaft 3 f; two or more than two springs 3c and a set of wedge block locking mechanisms are symmetrically arranged corresponding to each wedge block 3 b; the guide block 3a is fixed on the inner end face of the end cover 3d, the side face is matched with the wedge block 3b, the inner hole is matched with the original pipeline 11, and the outer circular surface is a conical surface and is matched with the semi-conical holes of the right shell 2 and the left shell 4.
A nut at one end of the special bolt 1 is fixed with a screw rod, the screw rod is sequentially provided with a cylindrical polished rod, a cone-shaped polished rod and a screw rod from the end of the fixed nut, and the outer diameter of the cylindrical polished rod is larger than that of the screw rod.
And a nut at one end of the middle bolt 8 is fixed with a screw rod, the screw rod is composed of a cylindrical polished rod and a screw rod, and the outer diameter of the cylindrical polished rod is the same as that of the screw rod.
When the right shell 2 and the left shell 4 are respectively attached to the limiting rings on the guide body 7, the distance between the screw rod end parts of the special bolt 1 and the middle bolt 8 fixed on the left shell 4 and the joint surface of the right shell 2 is larger than the outer diameter of the original pipeline 11.
One or more wedges 3b may be provided corresponding to each end cap 3 d.
The external leaking stoppage reinforcing device for the submarine pipeline has the function of plugging local leaking points or defects of the submarine pipeline in the underwater mode in a mechanical mode, and the safe operation of the submarine pipeline is guaranteed. The specific operation process is as follows:
the initial state is as follows: the semi-sealing rings 5 are respectively arranged in corresponding semi-cylindrical holes on the right shell 2 and the left shell 4; the sealing strip 9 is installed in a sealing groove on the right shell 2 or the left shell 4; the special bolt 1 and the middle bolt 8 are respectively installed and fixed on the left shell 4; the spring 3c on the clamping device 3 is in a compressed state, the wedge block 3b is tightly attached to the corresponding end surface of the end cover 3d, and the lock rod 3e is in a locking state for locking the wedge block 3 b; the right shell 2 and the left shell 4 are respectively attached to the limiting lifting rings at two ends of the guide body 7.
The installation process comprises the following steps: the plugging device is hoisted and the center line of the plugging device is approximately aligned to the center line of the original pipeline 11, the right shell 2 and the left shell 4 move oppositely along the guide body 7 under the action of external force, after the plugging device moves for a certain distance, the special-shaped bolt 1 fixed on the left shell 4 is gradually combined with the corresponding hole on the right shell 2 and is accurately guided, along with the gradual approach of the right shell 2 and the left shell 4, the four semi-sealing rings 5 are combined with the original pipeline 11, all movable nuts on the special-shaped bolt 1 and the middle bolt 8 are synchronously screwed to a specified torque through the bolt screwing device, the deflector rod 3g is screwed through an underwater robot or a diver, the lock rod 3e is driven to rotate through the lock shaft 3f, the wedge 3b is unlocked, and the wedge 3b is extruded on the original pipeline 11 under the action of the spring 3c, and then the installation work can be completed.
The clamping device 3 is used for fixing the plugging device on an original pipeline, the spring 3c in the clamping device 3 is used for releasing the wedge 3b and establishing the initial friction force between the wedge 3b and the original pipeline 11, the wedge 3b is matched with the semi-conical holes in the right shell 2 and the left shell 4, and the screw thread type inner hole structure of the wedge 3b is combined, so that the external force generated by moving the plugging device can be increased along with the increase of the moving external force, and the plugging device is fixed.
The half sealing ring 5 is made of graphite material, the sealing strip 9 is made of graphite packing, and permanent and reliable sealing is achieved by means of a specially designed structural form.
The anode block 11 serves to avoid and slow down corrosion of the plugging device.
Claims (10)
1. The utility model provides a submarine pipeline outer of tubes leaking stoppage reinforcing apparatus, including left casing (4) and right casing (2) that dispose in pairs and with left casing (4) and right casing (2) complex fastening bolt group, the solid device of card (3), sealing strip (9), semi-seal circle (5), its characterized in that, the intermediate position between right casing (2) and left casing (4) involution face is processed respectively and is had half cylinder groove and the half cone groove that corresponds each other and the same, begins to be in proper order from the tip: the semi-cylindrical groove and the semi-conical groove are matched with the clamping device (3), the semi-cylindrical groove is matched with the original pipeline (11), the semi-cylindrical groove is matched with the semi-sealing ring (5), the semi-cylindrical groove is matched with the original pipeline (11), the large semi-cylindrical groove is matched with the original pipeline (11), and all the semi-cylindrical grooves and the conical grooves in the stepped shape at two ends are symmetrical and are the same center line; sealing grooves matched with the sealing strips (9) are respectively arranged on the outer sides of the step-shaped semi-cylindrical groove and the conical groove and the joint surface of the right shell (2) and the left shell (4), the sum of the depths of the corresponding sealing grooves on the right shell (2) and the left shell (4) is smaller than the height of the sealing strips (9), and the end parts of the two ends of each sealing groove are respectively positioned in the middle of the semi-cylindrical groove where the semi-sealing ring (5) is positioned; two guide sleeves (6) are symmetrically arranged on the upper parts of the right shell (2) and the left shell (4) respectively, the guide sleeves (6) are matched with the guide bodies (7), and the guide sleeves (6) and the guide bodies (7) are perpendicular to the central line of the original pipeline (11); semi-sealing rings (5) are symmetrically embedded in corresponding semi-cylindrical grooves on the right shell (2) and the left shell (4), and the end parts of the semi-sealing rings (5) protrude out of the combined surface of the right shell (2) and the left shell (4); sealing strips (9) are respectively embedded in sealing grooves on the right shell (2) and the left shell (4), and the end parts of the two ends of each sealing strip (9) are respectively provided with a recess matched with the semi-sealing ring (5) and are in interference fit; the clamping and fixing devices (3) are arranged at two ends of the right shell (2) and the left shell (4) and are respectively matched with the corresponding end face, the semi-cylindrical groove and the semi-conical groove on the right shell (2) and the left shell (4).
2. The external leaking stoppage reinforcing device of the submarine pipeline according to claim 1, wherein the clamping device (3) comprises a guide block (3 a), a wedge block (3 b), a spring (3 c), an end cover (3 d), a lock rod (3 e), a lock shaft (3 f) and a deflector rod (3 g); the end cover (3 d) is of a semicircular structure, is matched with the right shell (2) and the left shell (4) and is respectively fixed at the two ends of the right shell and the left shell, the outer circular surface is sequentially processed into a step-shaped large-diameter semi-cylindrical surface, a semi-cylindrical surface and a semi-conical surface, the large-diameter semi-cylindrical surface protrudes out of the right shell (2) and the left shell (4), the semi-cylindrical surface is matched with corresponding semi-cylindrical grooves on the right shell (2) and the left shell (4), the semi-conical surface is matched with semi-conical grooves on the right shell (2) and the left shell (4), and the semi-cylindrical grooves in clearance fit with the original pipeline (11) are processed inside the end cover (3 d); the guide blocks (3 a) are symmetrically fixed on the inner end face of the end cover (3 d) and matched with the end face of the wedge block (3 b), the spring (3 c) is arranged in a blind groove matched with the inner end face of the end cover (3 d), and a cavity rotationally matched with the lock rod (3 e) is machined; the deflector rod (3 g) is arranged in a cavity which is rotationally matched with the outer end face of the end cover (3 d); the wedge block (3 b) is in a cone shape, the inner groove is provided with threads and matched with an original pipeline (11), the outer surface is in a cone shape and matched with semi-conical grooves corresponding to the right shell (2) and the left shell (4), the tail end of the wedge block (3 b) is provided with a cone-shaped tail wing, the outer surface of the tail wing is matched with the semi-conical grooves corresponding to the right shell (2) and the left shell (4), the inner surface of the tail wing is matched with a semi-conical surface of the end cover (3 d), the end surface of the tail wing is matched with a step end surface of the end cover (3 d), an arc-shaped groove for rotation of the tail wing is formed in the position corresponding to the lock rod (3 e), the wedge block (3 b) is provided with a blind groove matched with the spring (3 c), and the two side surfaces of the wedge block (3 b) are matched with the guide block (3 a).
3. The external leaking stoppage reinforcing device of the submarine pipeline according to claim 2, wherein a wedge locking mechanism consisting of a locking rod (3 e), a locking shaft (3 f) and a deflector rod (3 g) is arranged corresponding to the radial centerline position of the wedge (3 b), the locking shaft (3 f) is matched with the through groove on the end cover (3 d), and the locking rod (3 e) and the deflector rod (3 g) are respectively fixed at the two ends of the locking shaft (3 f); two or more springs (3 c) and a set of wedge block locking mechanisms are symmetrically arranged corresponding to each wedge block (3 b).
4. The external leaking stoppage reinforcing device for the submarine pipeline according to claims 1, 2 and 3, wherein four bolt grooves at the corners of the left shell (4) are tightly matched with the special-shaped bolt (1), stepped grooves are arranged at the four corners of the right shell (2) corresponding to the special-shaped bolt (1), the large-caliber groove of each stepped groove is tightly matched with the polished rod part of the special-shaped bolt (1), and the small-caliber groove is in clearance fit with the screw rod part of the special-shaped bolt (1); grooves which are in clearance fit with the middle bolts (8) are respectively arranged at the middle positions of the right shell (2) and the left shell (4); relative to the opposite surface of the joint surface of the right shell (2) and the left shell (4), a plane parallel to the joint surface is arranged on the right shell (2) and is matched with the corresponding fixed nut surfaces of the special bolt (1) and the middle bolt (8), the fixed nuts of the special bolt (1) and the middle bolt (8) are fixed on the right shell (2) by screws, and an anode block (10) is arranged in the middle of the plane; relative to the opposite surface of the joint surface of the right shell (2) and the left shell (4), a plane parallel to the joint surface is arranged on the left shell (4) and matched with the corresponding movable nut surfaces of the special-shaped bolt (1) and the middle bolt (8), and an anode block (10) is arranged in the middle of the plane.
5. The external leaking stoppage reinforcing device for the submarine pipeline according to claim 4, wherein limiting rings are arranged at two ends of the guide body (7); when the right shell (2) and the left shell (4) are respectively attached to the limiting lifting rings on the guide body (7), the distance between the screw rod end parts of the special bolt (1) and the middle bolt (8) fixed on the left shell (4) and the joint surface of the right shell (2) is larger than the outer diameter of the original pipeline (11).
6. The external leaking stoppage reinforcing device for the submarine pipeline according to claim 5, wherein the semi-sealing rings (5) are made of graphite, the end surfaces of the two butted semi-sealing rings (5) are inclined, and the protruding height of the corresponding inner diameter is greater than that of the corresponding outer diameter.
7. The external leaking stoppage reinforcing device for the submarine pipeline according to claim 6, wherein the sealing strip (9) is made of graphite packing.
8. The external leaking stoppage reinforcing device for the submarine pipeline according to claims 1, 2 and 3, wherein the fastening bolt group comprises a special bolt (1), a middle bolt (8) and a nut.
9. The external leaking stoppage reinforcing device for the submarine pipeline according to claims 1, 2 and 3, wherein the special-shaped bolt (1) is provided with a cylindrical polished rod, a conical polished rod and a screw rod in sequence from the end of a fixing nut, and the outer diameter of the cylindrical polished rod is larger than that of the screw rod.
10. The external leaking stoppage reinforcing device for the submarine pipeline according to claims 1, 2 and 3, wherein the middle bolt (8) is fixed with a nut and a screw rod, the screw rod is composed of a cylindrical polished rod and a screw rod, and the outer diameter of the cylindrical polished rod is the same as or different from that of the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262169.3A CN112944099A (en) | 2019-12-10 | 2019-12-10 | External leaking stoppage reinforcing device for submarine pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262169.3A CN112944099A (en) | 2019-12-10 | 2019-12-10 | External leaking stoppage reinforcing device for submarine pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN112944099A true CN112944099A (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911262169.3A Pending CN112944099A (en) | 2019-12-10 | 2019-12-10 | External leaking stoppage reinforcing device for submarine pipeline |
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| Country | Link |
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| CN (1) | CN112944099A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215996A (en) * | 2022-01-15 | 2022-03-22 | 玉溪新兴钢铁有限公司 | Water pipe leaking stoppage and leakage prevention device |
-
2019
- 2019-12-10 CN CN201911262169.3A patent/CN112944099A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215996A (en) * | 2022-01-15 | 2022-03-22 | 玉溪新兴钢铁有限公司 | Water pipe leaking stoppage and leakage prevention device |
| CN114215996B (en) * | 2022-01-15 | 2024-01-19 | 玉溪新兴钢铁有限公司 | Water pipe plugging and leakage preventing device |
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