CN211203294U - Locking and sealing structure of pressure plugging pipe clamp for preventing falling off during installation - Google Patents
Locking and sealing structure of pressure plugging pipe clamp for preventing falling off during installation Download PDFInfo
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- CN211203294U CN211203294U CN201922012117.2U CN201922012117U CN211203294U CN 211203294 U CN211203294 U CN 211203294U CN 201922012117 U CN201922012117 U CN 201922012117U CN 211203294 U CN211203294 U CN 211203294U
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Abstract
The utility model belongs to the technical field of submarine pipeline maintenance and specifically relates to a locking seal structure of shutoff pipe strap is pressed in area that drops when preventing to install: comprises a shell, a locking mechanism and a sealing mechanism; the locking mechanism is positioned on the axial inner side of the shell and comprises a wedge-shaped outer ring and a wedge-shaped inner ring, a jacking flange and a jacking bolt are arranged on the locking mechanism, a round hole is formed in the jacking flange, and a countersunk head screw penetrates through the round hole to enable the wedge-shaped outer ring to be connected with the jacking flange; a plurality of grooves are circumferentially formed in the wedge-shaped inner ring, and round head screws penetrate through the grooves to enable the wedge-shaped inner ring to be connected with the wedge-shaped outer ring; the sealing mechanism comprises an axial sealing strip, a long compression column, a compression ring and a circumferential sealing ring which are arranged along the axial direction of the shell, wherein the long compression column penetrates through a through hole of the shell baffle plate, and two ends of the long compression column extend into through holes respectively formed in the compression ring and the wedge-shaped outer ring. The utility model discloses locking mechanism and the easy problem that drops of sealing mechanism when can avoiding the installation of pipe strap, the pipe strap shutoff is efficient, guarantees the locking and the sealing performance of pipe strap effectively.
Description
Technical Field
The utility model belongs to the technical field of submarine pipeline maintenance and specifically relates to a locking seal structure of shutoff pipe strap is pressed in area that drops when preventing installation.
Background
The plugging technology of submarine pipelines is a safe, economic, rapid and efficient special technology for maintaining and repairing in-service pipelines, and can rapidly and safely repair accident pipelines when the pipelines leak under the condition of uninterrupted pipeline medium delivery, and recover the operation of the pipelines, thereby rapidly repairing the damages of cracks, perforations and the like of the submarine pipelines caused by fatigue, seawater corrosion or the influence of other factors. In the maintenance process, a pipe clamp is generally adopted to plug and reinforce the pipeline under the condition of small damage. In order to facilitate installation, a locking mechanism and a sealing mechanism of an existing plugging pipe clamp both adopt a sectional type structure, the locking mechanism and the sealing mechanism respectively comprise different components, the different components are fixed by mutual contact extrusion during plugging of the pipe clamp, but the locking mechanism and the sealing mechanism are not fixedly connected with each other and a pipe clamp shell, so that in the installation process of the pipe clamp plugging, especially in the process of opening two sections of the pipe clamp to pack up damaged pipes, the problem that the locking mechanism and the sealing mechanism are easy to fall off exists, the plugging efficiency of the pipe clamp is influenced, and in severe cases, the normal installation of the pipe clamp is even influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the above-mentioned problem that exists among the prior art, provide a locking seal structure of area pressure shutoff pipe strap that drops when preventing to install, it is under the prerequisite that does not influence locking and seal structure work, has realized locking mechanism and sealing mechanism's interconnect to and be connected between their and the pipe strap casing, prevent droing of locking mechanism and sealing mechanism in the installation of pipe strap shutoff.
The technical scheme of the utility model is that:
a locking and sealing structure for preventing a pipe clamp with pressure from falling off during installation comprises a shell, a locking mechanism and a sealing mechanism;
the shell comprises a left shell and a right shell, the left shell and the right shell are both semicircular, and the two shells are fixedly connected through bolts on flange plates of the two shells;
the locking mechanism is positioned on the axial inner side of the shell and comprises a wedge-shaped outer ring and a wedge-shaped inner ring, the wedge-shaped outer ring and the wedge-shaped inner ring are both semicircular, the wedge-shaped outer ring is positioned on the inner side of the shell, and the wedge-shaped inner ring is positioned on the inner side of the wedge-shaped outer ring; the inner surface of the wedge-shaped outer ring is provided with a plurality of conical surfaces; the outer surface of the wedge-shaped inner ring is provided with a plurality of conical surfaces corresponding to the inner surface of the wedge-shaped outer ring; a jacking flange and a jacking bolt are arranged on the outer side of the wedge-shaped outer ring, the jacking flange is connected with the shell through the jacking bolt, one end of the jacking bolt is connected with the shell, and the other end of the jacking bolt is provided with an axial bolt tensioner for driving the jacking flange; a round hole is formed in one end, close to the wedge-shaped outer ring, of the jacking flange, a countersunk screw is fixed at one end, close to the jacking flange, of the wedge-shaped outer ring, and the nail head of the countersunk screw extends into the round hole of the wedge-shaped outer ring to enable the wedge-shaped outer ring to be connected with the jacking flange; the wedge-shaped inner ring is provided with a plurality of grooves at intervals in a staggered manner along the circumferential direction, 2 round head screws are fixed at positions of the wedge-shaped outer ring corresponding to the grooves, and the round head screws penetrate through the grooves to connect the wedge-shaped inner ring with the wedge-shaped outer ring;
sealing mechanism includes the axial sealing strip that sets up along the casing axial, and the long compression post that sets up along the casing axial, compression ring and circumference sealing washer, the axial sealing strip sets up in the axial seal groove of casing both sides, it makes long compression post can pass to be equipped with the through-hole on the casing baffle, wedge outer loop and compression ring are provided with the round hole respectively, long compression post passes the round hole that its both ends of casing baffle stretched into wedge outer loop and compression ring respectively, make compression ring and wedge outer loop be connected, the compression ring compresses tightly circumference sealing washer and makes it contradict with the casing.
Further, the sealing mechanism also comprises a short compression column which penetrates through a through hole in the shell baffle plate and is positioned between the wedge-shaped outer ring and the compression ring.
Further, the circumferential sealing ring comprises a pressing ring, a U-shaped ring and a baffle ring; the baffle ring is positioned on the inner side of the compression ring, and the rear part of the baffle ring is matched with the bulge part of the U-shaped ring; the pressing ring is provided with a protruding part which is matched with the concave part of the U-shaped ring.
Further, the U-shaped ring is made of rubber.
Further, the pressing ring and the baffle ring are made of hard plastics.
Further, the inner surface of the wedge-shaped inner ring is in a sawtooth shape.
Further, the left side shell and the right side shell are fixedly connected through flange nuts, flange bolts and flange bolt tensioners on flange plates of the left side shell and the right side shell.
Further, the structure still includes the rings that set up respectively in left side casing and right side casing outer wall upside.
The utility model has the advantages that:
(1) through countersunk head screw, round head screw and long compression column, each component of locking mechanism and sealing mechanism are connected with each other in a contact way and are connected with the pipe clamp shell, so that the problem that the locking mechanism and the sealing mechanism are easy to fall off when the pipe clamp is installed is avoided, and the locking and sealing performance of the pipe clamp is effectively ensured.
(2) The circumferential sealing ring is arranged, and is extruded by the compression ring to deform to contact with the pipe fitting and the axial sealing strip, so that circumferential sealing is completed.
(3) The structure is still including setting up in the rings of left side casing and right side casing outer wall respectively to can form a complete set and be used for hoist and mount and open the hydro-cylinder or the robotic arm of left side casing and right side casing, thereby realize the automation of structure is opened and is packed up impaired pipe fitting, uses manpower sparingly.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a left side view structure diagram of the present invention;
fig. 3 is a schematic top view of the present invention;
fig. 4 is a schematic sectional structure view of a U-shaped ring of the circumferential sealing ring of the present invention;
fig. 5 is a schematic structural view of the wedge-shaped inner ring and the wedge-shaped outer ring of the present invention connected by round head screws.
In the figure:
1-damaged pipe; 2-jacking the bolt; 3-axial bolt tensioner; 4-jacking the nut; 5-jacking a flange; 6-countersunk head screw; 7-a wedge-shaped outer ring; 8-a wedge-shaped inner ring; 9-long compression column; 10-a compression ring; 11-a circumferential sealing ring; 12-a housing; 13-axial seal strip; 14-flange nuts; 15-flange bolt tensioner; 16-flange bolts; 17-round head screw; 18-shell baffles; 19-short compression column; 20-a pressure ring; 21-U-shaped ring; 22-baffle ring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 to 5, the locking and sealing structure for preventing the pipe clamp under pressure from falling off during installation according to the present embodiment includes a housing 12, a locking mechanism and a sealing mechanism.
The housing 12 includes a left housing and a right housing, both of which are semicircular, and the two housings 12 are fixedly connected by a flange nut 14, a flange bolt 16 and a flange bolt tensioner 15 on a flange plate thereof.
The locking mechanism is positioned on the axial inner side of the shell 12 and comprises a wedge-shaped outer ring 7 and a wedge-shaped inner ring 8, the wedge-shaped outer ring 7 and the wedge-shaped inner ring 8 are both semicircular, the wedge-shaped outer ring 7 is positioned on the inner side of the shell 12, and the wedge-shaped inner ring 8 is positioned on the inner side of the wedge-shaped outer ring 7; the inner surface of the wedge-shaped outer ring 7 is provided with a plurality of conical surfaces; the outer surface of the wedge-shaped inner ring 8 is provided with a plurality of conical surfaces corresponding to the inner surface of the wedge-shaped outer ring 7, and the wedge-shaped outer ring 7 pushes the wedge-shaped inner ring 8 to move towards the center of the wedge-shaped inner ring 8 along the radial direction of the shell 12 through contact driving between the conical surfaces.
The wedge-shaped outer ring 7 and the wedge-shaped inner ring 8 are both made of a material having elasticity. The outer side of the wedge-shaped outer ring 7 is provided with a jacking flange 5 and a jacking bolt 2, the jacking flange 5 is connected with the shell 12 through the jacking bolt 2, one end of the jacking bolt 2 is connected with the shell 12, and the other end of the jacking bolt is provided with an axial bolt tensioner 3 for driving the jacking flange 5; the axial bolt tensioner 3 drives the jacking flange 5 inwards, thereby pushing the wedge-shaped outer ring 7 inwards.
The jacking flange 5 is provided with a round hole near one end of the wedge-shaped outer ring 7, the wedge-shaped outer ring 7 is fixed with a countersunk screw 6 near one end of the jacking flange 5, and the pin head of the countersunk screw 6 extends into the round hole to connect the wedge-shaped outer ring 7 with the jacking flange 5, so that the structure is not easy to fall off during installation.
The internal surface of wedge inner ring 8 can set up to the zigzag, and wedge inner ring 8 sets up the several recess along its circumferencial direction interval is crisscross, and when wedge outer loop 7 extruded wedge inner ring 8 to the inboard, the recess can change, makes the circumference size of wedge inner ring 8 diminish to realized the radial shrinkage deformation of wedge inner ring 8, the die tooth of last wedge inner ring 8 bites into the surface of impaired pipe fitting 1, realized the centering and the locking operation of pipe strap. The position that corresponds wedge inner ring 8 recess at wedge outer loop 7 is fixed with 2 button head screws 17, and button head screws 17 pass the recess and make wedge inner ring 8 be connected with wedge outer loop 7, can confirm the quantity of using button head screws 17 according to actual need, and button head screws 17 pass the recess of wedge inner ring 8 and make wedge inner ring 8 have certain position constraint in casing 12 week, thereby during the structure installation, be difficult to take place to drop.
The sealing mechanism comprises axial sealing strips 13 arranged along the axial direction of the shell 12, and the axial sealing strips 13 are arranged in axial sealing grooves on two sides of the shell 12. Sealing mechanism still includes along the long compression post 9 of 12 axial settings of casing, compression ring 10 and circumference sealing washer 11, it makes long compression post 9 can pass to be equipped with the through-hole on the casing baffle 18, wedge outer loop 7 and compression ring 10 are provided with the round hole respectively, long compression post 9 passes the round hole that its both ends of casing baffle 18 stretched into wedge outer loop 7 and compression ring 10 respectively, make compression ring 10 be connected with wedge outer loop 7, compression ring 10 compresses tightly circumference sealing washer and makes it contradict with casing and axial sealing strip 13.
The sealing mechanism further comprises a short compression column 19 which penetrates through a through hole in a shell baffle 18 and is located between the wedge-shaped outer ring 7 and the compression ring 10, when the axial bolt tensioner 3 drives the jacking flange 5 to move inwards to push the wedge-shaped outer ring 7 to move inwards, the compression ring 10 is axially pressed through the short compression column 19, the circumferential sealing ring 11 is extruded to be deformed and is contacted with the pipe fitting and the axial sealing strip 13, and circumferential sealing is completed.
The axial sealing strip 13 cooperates with the circumferential sealing ring 11 to form a closed sealing space in the housing 12.
The circumferential sealing ring 11 comprises a pressing ring 20, a U-shaped ring 21 and a retaining ring 22; the U-shaped ring 21 is a rubber ring with a U-shaped section, the baffle ring 22 is positioned on the inner side of the compression ring 10, the rear part of the baffle ring 22 is provided with a notch, and the notch is in fit contact with the convex part of the U-shaped ring 21; the pressure ring 20 has a raised portion which is in mating contact with a recessed portion of the U-ring 21.
The U-shaped ring 21 is made of rubber; the pressing ring 20 and the retaining ring 22 can be made of hard plastics, and are deformed by extruding the U-shaped ring 21 to be in contact with the pipe fitting and the axial sealing strip 13, so that circumferential sealing is formed on the pipe fitting.
The working process of the structure in this embodiment is as follows: firstly, a countersunk head screw 6 is fixed at the end part of a wedge-shaped outer ring 7, a round head screw 17 is fixed at the position of a notch of the wedge-shaped outer ring 7 corresponding to a groove of a wedge-shaped inner ring 8, a long compression column 9 and a short compression column 19 penetrate into a shell baffle 18, then all components of a locking mechanism and a sealing mechanism are mutually connected and contacted through the countersunk head screw 6, the round head screw 17 and the long compression column 9 respectively, so that the locking mechanism and the sealing mechanism are respectively placed at the inner sides of a left shell and a right shell, two sections of a pipe clamp are opened to be sleeved on a damaged pipe fitting 1 when the pipe clamp is installed, the left shell and the right shell are fixedly connected through a flange bolt 16 and a flange bolt tensioner 15 on a shell flange plate, and an axial sealing strip 13 is compressed to form. Then, the axial bolt tensioner 3 drives the jacking flange 5 to jack axially, the jacking flange 5 pushes the wedge-shaped outer ring 7 to start to move axially, and through load transfer of a conical surface in contact between the wedge-shaped outer ring 7 and the wedge-shaped inner ring 8, a gap of a groove on the wedge-shaped inner ring 8 changes, so that the wedge-shaped inner ring 8 deforms radially, the circumferential size of the wedge-shaped inner ring 8 is reduced, and the centering operation of the pipe clamp is realized; the wedge-shaped outer ring 7 starts to move axially, and simultaneously contacts with the short compression column 19 to axially compress the compression ring 10, so that the circumferential sealing ring 11 is extruded to deform and contact with the pipe fitting and the axial sealing strip 13 to form circumferential sealing. And at the final stage of jacking of the jacking flange 5, the sawteeth of the wedge-shaped outer ring 7 are bitten into the shell 12 to form locking bearing capacity, the jacking nut 4 is screwed to buckle the jacking flange 5 to lock the whole device, so that the damaged pipe fitting 1 is buckled and locked, and meanwhile, a closed sealing space is formed by the circumferential sealing ring 11 and the two ends of the axial sealing strip 13 to finish the pressurized plugging operation of the pipe clamp. And finally, performing water tightness detection on the pipe clamp, and judging whether the pipe clamp is successfully installed.
As the utility model discloses a another kind of improvement does, the structure is still including setting up in the rings of left side casing and right side casing outer wall respectively, rings preferably set up in the outer wall upside that is close to each other when closing about left side casing and the right side casing, can form a complete set and be used for hoist and mount and open the hydro-cylinder or the robotic arm of left side casing and right side casing, thereby realize the automation of structure is opened and is wrapped up impaired pipe fitting, uses manpower sparingly.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the present invention, and all equivalent modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a locking seal structure of area pressure shutoff pipe strap that drops when preventing to install which characterized in that: comprises a shell (12), a locking mechanism and a sealing mechanism;
the shell (12) comprises a left shell and a right shell, the left shell and the right shell are both semicircular, and the two shells (12) are fixedly connected through bolts on the flange plate;
the locking mechanism is positioned on the axial inner side of the shell (12), the locking mechanism comprises a wedge-shaped outer ring (7) and a wedge-shaped inner ring (8), the wedge-shaped outer ring (7) and the wedge-shaped inner ring (8) are both semicircular, the wedge-shaped outer ring (7) is positioned on the inner side of the shell (12), and the wedge-shaped inner ring (8) is positioned on the inner side of the wedge-shaped outer ring (7); the inner surface of the wedge-shaped outer ring (7) is provided with a plurality of conical surfaces; the outer surface of the wedge-shaped inner ring (8) is provided with a plurality of conical surfaces corresponding to the inner surface of the wedge-shaped outer ring (7); a jacking flange (5) and a jacking bolt (2) are arranged on the outer side of the wedge-shaped outer ring (7), the jacking flange (5) is connected with the shell (12) through the jacking bolt (2), one end of the jacking bolt (2) is connected with the shell (12), and the other end of the jacking bolt is provided with an axial bolt tensioner (3) for driving the jacking flange (5); a round hole is formed in one end, close to the wedge-shaped outer ring (7), of the jacking flange (5), a countersunk screw (6) is fixed at one end, close to the jacking flange (5), of the wedge-shaped outer ring (7), and the head of the countersunk screw (6) extends into the round hole of the wedge-shaped outer ring (7) to enable the wedge-shaped outer ring (7) to be connected with the jacking flange (5); the wedge-shaped inner ring (8) is provided with a plurality of grooves at intervals in a staggered manner along the circumferential direction, round head screws (17) are fixed on the wedge-shaped outer ring (7) at positions corresponding to the grooves of the wedge-shaped inner ring (8), and the round head screws (17) penetrate through the grooves to enable the wedge-shaped inner ring (8) to be connected with the wedge-shaped outer ring (7);
sealing mechanism includes axial sealing strip (13) along casing (12) axial setting, and long compression post (9) along casing (12) axial setting, compression ring (10) and circumference sealing washer (11), axial sealing strip (13) set up in the axial seal groove of casing (12) both sides, be equipped with the through-hole on casing baffle (18), wedge outer ring (7) and compression ring (10) are provided with the round hole respectively, long compression post (9) pass casing baffle (18), and the round hole of wedge outer ring (7) and compression ring (10) is stretched into respectively to the both ends of long compression post, make compression ring (10) be connected with wedge outer ring (7), compression ring (10) compress tightly circumference sealing washer (11) and make it contradict with casing (12).
2. The locking and sealing structure for the pipe clamp with pressure, which is prevented from falling off during installation according to claim 1, is characterized in that: the sealing mechanism also comprises a short compression column (19) which penetrates through a through hole in the shell baffle plate (18) and is positioned between the wedge-shaped outer ring (7) and the compression ring (10).
3. The locking and sealing structure for the pipe clamp with pressure, which is prevented from falling off during installation according to claim 1, is characterized in that: the circumferential sealing ring (11) comprises a pressing ring (20), a U-shaped ring (21) and a retaining ring (22); the baffle ring (22) is positioned on the inner side of the compression ring (10), and the rear part of the baffle ring (22) is matched with the convex part of the U-shaped ring (21); the pressing ring (20) has a protruding portion that fits into the recessed portion of the U-shaped ring (21).
4. The locking and sealing structure for the pipe clamp with pressure, which is prevented from falling off during installation, according to claim 3, is characterized in that: the U-shaped ring (21) is made of rubber.
5. The locking and sealing structure for the pipe clamp with pressure, which is prevented from falling off during installation, according to claim 3, is characterized in that: the pressing ring (20) and the baffle ring (22) are made of hard plastics.
6. The locking and sealing structure for the pipe clamp with pressure, which is prevented from falling off during installation according to claim 1, is characterized in that: the inner surface of the wedge-shaped inner ring (8) is in a sawtooth shape.
7. The locking and sealing structure for the pipe clamp with pressure, which is prevented from falling off during installation according to claim 1, is characterized in that: the left side shell and the right side shell are fixedly connected through a flange nut (14), a flange bolt (16) and a flange bolt tensioner (15) on a flange plate.
8. The locking and sealing structure for the pipe clamp with pressure, which is prevented from falling off during installation according to claim 1, is characterized in that: the structure also comprises lifting rings which are respectively arranged on the upper sides of the outer walls of the left side shell and the right side shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922012117.2U CN211203294U (en) | 2019-11-20 | 2019-11-20 | Locking and sealing structure of pressure plugging pipe clamp for preventing falling off during installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922012117.2U CN211203294U (en) | 2019-11-20 | 2019-11-20 | Locking and sealing structure of pressure plugging pipe clamp for preventing falling off during installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211203294U true CN211203294U (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922012117.2U Active CN211203294U (en) | 2019-11-20 | 2019-11-20 | Locking and sealing structure of pressure plugging pipe clamp for preventing falling off during installation |
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| Country | Link |
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| CN (1) | CN211203294U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933052A (en) * | 2021-08-26 | 2022-01-14 | 海洋石油工程股份有限公司 | Axial bearing capacity prediction device and test method for pipe clamping plate tooth type locking mechanism |
| WO2022232201A1 (en) * | 2021-04-27 | 2022-11-03 | Oceaneering International Inc | Sealing member for repairing a pipeline and method of use |
-
2019
- 2019-11-20 CN CN201922012117.2U patent/CN211203294U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022232201A1 (en) * | 2021-04-27 | 2022-11-03 | Oceaneering International Inc | Sealing member for repairing a pipeline and method of use |
| CN113933052A (en) * | 2021-08-26 | 2022-01-14 | 海洋石油工程股份有限公司 | Axial bearing capacity prediction device and test method for pipe clamping plate tooth type locking mechanism |
| CN113933052B (en) * | 2021-08-26 | 2024-05-17 | 海洋石油工程股份有限公司 | Pipe clamp die type locking mechanism axial bearing capacity prediction device and testing method |
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