B-type sleeve assembling and fastening device

Abstract

The utility model relates to the technical field of oil and gas conveying pipelines, and discloses a B-type sleeve assembling and fastening device which comprises a hydraulic pump connected with a B-type sleeve in an abutting mode, the hydraulic pump is connected with a connecting supporting plate in a threaded fit mode, a chain wraps the B-type sleeve in the circumferential direction, and the two ends of the chain are movably connected with the two sides of the connecting supporting plate respectively. The B-type sleeve fastening device is simple in structure, convenient to assemble and disassemble and universal, and the efficiency of pipeline repairing operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas transmission pipelines, in particular to a B-type sleeve assembly fastening device. Background Art

[0002] In recent years, during the re-inspection of circumferential welds of in-service pipelines, welds with welding quality defects were found, posing serious safety hazards to pipeline operations.

[0003] Pipe replacement is a common way to solve girth weld defects. Due to the long pipe replacement cycle, many risks and hidden dangers, and high construction costs, the installation of B-type sleeves is gradually adopted to replace pipe replacement operations according to the degree of harm of girth weld defects. Compared with pipe replacement repair, B-type sleeves have the advantages of small excavation volume, small impact on process operation, no need to stop venting and nitrogen replacement. However, there is currently no mature and easy-to-operate installation equipment, and the installation equipment is not flexible to operate, and the purpose of safety assembly cannot be achieved. Utility Model Content

[0004] The utility model aims to overcome the problem of inflexible operation of installation tools in the prior art and to provide a B-type sleeve set fastening device, which has the characteristics of convenient operation and flexible use.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a B-type sleeve assembly fastening device, including a hydraulic pump abutting the B-type sleeve, the hydraulic pump is threadedly connected to the connecting support plate, the B-type sleeve is circumferentially wrapped with a chain, and the two ends of the chain are respectively movably connected to the two sides of the connecting support plate.

[0006] When using a B-type sleeve to repair a problematic pipe, the operating steps are as follows:

[0007] First, wrap and install two sets of B-type sleeves on the outer surface of the problem pipe;

[0008] Second, install the connecting bracket on the threaded section of the hydraulic pump;

[0009] Third, select a chain of suitable length and tie it to the outer surface of the B-type sleeve, and clamp the two ends of the chain to the two sides of the connecting support plate respectively. At this time, the chain remains basically taut, and the hydraulic pump and the B-type sleeve remain in contact;

[0010] Fourth, operate the handle of the hydraulic pump to extend the hydraulic pump rod, thereby increasing the vertical position height of the hydraulic pump and the height of the threaded section of the hydraulic pump. The height of the connecting support plate is also increased, thereby increasing the longest inner diameter length of the chain to make the chain taut. At this time, the two sets of B-type sleeves and the pipeline are in the best fit.

[0011] Fifth, weld the two longitudinal seams and two circumferential seams between the B-type sleeve and the pipeline to complete the pipeline repair.

[0012] Sixth, after the B-type sleeve is firmly connected to the problematic pipe, remove the fastening device.

[0013] The B-type sleeve assembly and fastening device of the present application has a simple structure, including a hydraulic pump, a connecting support plate and a chain. The fastening device composed of three components is easy to carry and convenient to install and disassemble, so that the B-type sleeve can be assembled quickly and safely.

[0014] Among them, the hydraulic pump rod can be extended to a certain length to ensure the height that the connecting bracket can rise, so as to meet the installation requirements of various pipe diameters. The connecting bracket is threadedly connected to the hydraulic pump, making the connecting bracket and the hydraulic pump quick to install. In order to facilitate the insertion and adjustment of the chain, the two sides of the connecting bracket are movably connected to the chain. According to the size of the pipe diameter, the length of the chain can be quickly retracted and released, and the chain and the connecting bracket can be easily installed and disassembled.

[0015] The fastening device of the present application has a simple structure and is easy to install. It can provide strong pressing force and bearing force for the B-type sleeve when assembling, so that the position of the B-type sleeve after assembly is more accurate, which is convenient for subsequent operations such as welding, ensuring the safety and standardization of the entire repair process, and can be applied to the assembly and fastening of various types of B-type sleeves.

[0016] Preferably, the hydraulic pump has a threaded section, a central threaded through hole is opened in the middle of the connecting support plate, and the central threaded through hole is threadedly matched with the threaded section.

[0017] In order to realize the threaded connection between the connecting support plate and the hydraulic pump, a central threaded through hole is opened in the middle of the connecting support plate. The hydraulic pump is a prior art and has a threaded section in its structure. The central threaded through hole of the connecting support plate is arranged to be threadedly matched with the threaded section of the hydraulic pump, which facilitates the connection and disassembly of the connecting support plate and the hydraulic pump, and further provides convenience for the assembly and disassembly of the fastening device.

[0018] Preferably, the chain is a cylindrical pin industrial chain.

[0019] In order to ensure that the chain and the connecting plate can be firmly connected and the structure is simple, the chain adopts an industrial chain with cylindrical pins. The cylindrical pin type chain is easy to disassemble and can be easily adjusted when there are different chain lengths. The cylindrical pin type chain has a pin shaft, and the pin shaft protruding from the chain provides structural support for the connection between the chain and the connecting plate, such as Figure 3 In addition, the length of the chain and the extension length of the pin can be customized to better suit the fastening device.

[0020] Preferably, both sides of the connecting support plate are respectively provided with card slots, and the card slots are movably connected with the chain.

[0021] In order to further improve the stability of the connection between the chain and the connecting support plate, card slots are respectively provided on both sides of the connecting support plate to match the structure of the pin shaft of the chain, so that the card slots and the chain can be movably connected to facilitate installation and disassembly.

[0022] Preferably, the slot includes a through slot and a U-shaped receiving slot perpendicular to and opposite to the through slot, the width of the through slot matches the width of the chain, and the oppositely arranged U-shaped receiving slot is engaged with the pin of the chain.

[0023] The specific structure of the slot includes a through slot and a U-shaped receiving slot. The through slot is for the chain to pass through the connecting plate and to facilitate the adjustment of the length, and the U-shaped receiving slot is for accommodating the pin of the chain. It should be noted that the cross-sectional area of ​​the U-shaped receiving slot should be larger than half of the cross-sectional area of ​​the pin so that the U-shaped receiving slot can clamp the pin. When the connecting plate is connected to a chain of appropriate length, the two ends of the pin need to be installed in the oppositely arranged U-shaped receiving slots and clamped firmly.

[0024] Preferably, the middle area of ​​the connecting support plate is arranged as a reinforcement section, and the thickness of the reinforcement section is greater than the thickness of other sections.

[0025] In order to increase the load-bearing performance of the connecting pallet, the middle area of ​​the connecting pallet is thickened so that the connecting pallet can bear a larger weight even with a smaller volume.

[0026] Preferably, a single set of fastening devices is arranged on the outside of the B-type sleeve.

[0027] The use of a single set of fastening devices is an implementation method of its application. When used for straight pipe repair, one set of fastening devices can be used on the outside of the B-type sleeve. The single set of fastening devices not only has the fastening function, but also has the function of adjusting the ovality of the B-type sleeve, ensuring the uniformity of the gap in subsequent welding.

[0028] Preferably, it is characterized in that two or more sets of fastening devices are arranged on the outside of the B-type sleeve.

[0029] The second implementation method of its application is to use two or more sets of fastening devices in coordination. When the pipeline to be repaired is an inclined section, two or more sets of fastening devices are used in coordination with each other. When two or more sets of fastening devices are used in coordination, not only can they limit the B-type sleeve during construction when the slope of the pipeline to be repaired is too large, but they can also prevent the B-type sleeve from sliding down.

[0030] Through the above technical solution, the present application is threadedly connected to the connecting support plate through the hydraulic pump, and the chain bolted to the outside of the B-type sleeve is movably connected to the two sides of the connecting support plate. When the handle of the hydraulic pump is operated to extend the hydraulic pump rod, the inner diameter of the chain becomes larger and the chain is tied tighter, thereby realizing the assembly of the B-type sleeve. The B-type sleeve fastening device of the present application has a simple structure, is easy to assemble and disassemble, and can be used universally, thereby improving the efficiency of pipeline repair operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the fastening device of the B-type sleeve installation group;

[0032] Figure 2 It is a schematic diagram of the hydraulic pump structure;

[0033] Figure 3 It is a schematic diagram of the structure of the connection between the chain and the connecting pallet;

[0034] Figure 4 It is a schematic diagram of the structure of the connecting support plate;

[0035] Figure 5 It is a schematic diagram of the structure of the connecting support plate from the side.

[0036] Description of Reference Numerals

[0037] 1. Fastening device; 11. Hydraulic pump; 111. Handle; 112. Threaded section; 113. Spacer; 12. Connecting support plate; 121. Center threaded through hole; 122. Slot; 1221. Through slot; 1222. U-shaped receiving slot; 13. Chain; 2. Pipeline; 3. B-type sleeve; 4. Longitudinal seam; 5. Annular seam. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0039] In the present utility model, unless otherwise specified, directional words such as "up, down, left, right, inside, outside, far, near, front" generally refer to the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limitations on the present utility model.

[0040] like Figure 1 A B-type sleeve assembly fastening device is shown, including a hydraulic pump 11 abutting against the B-type sleeve 3, the hydraulic pump 11 is threadedly connected to the connecting support plate 12, the B-type sleeve 3 is circumferentially wrapped with a chain 13, and the two ends of the chain 13 are movably connected to the two sides of the connecting support plate 12 respectively.

[0041] It should be noted that when the B-type sleeve 3 is used to repair the problematic pipeline 2, the specific operation steps are as follows:

[0042] First, two sets of B-type sleeves 3 are wrapped and installed on the outer surface of the problematic pipe 2;

[0043] Second, install the connecting support plate 12 on the threaded section 112 of the hydraulic pump 11;

[0044] Third, select a suitable length of chain 13 and tie it to the outer surface of B-type sleeve 3, and clamp the two ends of chain 13 to the two sides of connecting support plate 12 respectively. At this time, chain 13 is kept in a basically tight state, and hydraulic pump 11 is kept in contact with B-type sleeve 3;

[0045] Fourth, operate the handle 111 of the hydraulic pump 11 to extend the hydraulic pump rod, thereby raising the vertical position of the hydraulic pump 11 and the vertical height of the threaded section 112 of the hydraulic pump 11. The height of the connecting support plate 12 is also raised, thereby increasing the maximum inner diameter length of the chain 13 and making the chain 13 taut. At this time, the two sets of B-type sleeves 3 and the pipe 2 are in the best fit.

[0046] Fifth, weld the two longitudinal seams 4 and two circumferential seams 5 between the B-type sleeve and the pipe 2 to complete the repair of the pipe 2. The longitudinal seam 4 is the angled gap in the horizontal direction after the two sets of B-type pipes 3 are assembled, and the circumferential seam 5 is the gap between the inner diameter of the assembled B-type sleeve 3 and the outer diameter of the problematic pipe 2. Figure 1 The longitudinal seam 4 provides welding space for sealing and fixing the connection between two groups of B-type sleeves 3 and between the B-type sleeve 3 and the problematic pipe 2 in the horizontal direction, and the annular seam 5 provides welding space for sealing and fixing the connection between the two ends of the B-type sleeve and the problematic pipe 2 in the circumferential direction.

[0047] Sixth, after the B-type sleeve is firmly connected to the problematic pipe, the fastening device 1 is disassembled. The specific operation is to open the pressure relief valve of the hydraulic pump 11, shorten the hydraulic pump rod, and lower the height of the hydraulic pump 11 in the vertical direction, thereby lowering the height of the connecting support plate 12, reducing the longest inner diameter length of the chain 13 to make the chain 13 in a relaxed state, so that the chain 13 can be disassembled from the connecting support plate 12, and then disassemble the connecting support plate 12 and the hydraulic pump 11.

[0048] The B-type sleeve assembly and fastening device of the present application has a simple structure, and includes a hydraulic pump 11, a connecting support plate 12 and a chain 13. The fastening device 1 composed of three components is easy to carry and convenient to install and disassemble, so that the B-type sleeve 3 can be assembled quickly and safely.

[0049] Specifically, the hydraulic pump 11 is a prior art, such as Figure 1 The embodiment of the hydraulic pump 11 shown is a manual integrated hydraulic pump 11. The hydraulic pump rod can be extended to a certain length, which can ensure the height to which the connecting support plate 12 can rise, so as to meet the installation requirements of various pipe diameters. Based on the actual working conditions, the extendable length of the hydraulic pump rod needs to be greater than 100 mm. The connecting support plate 12 is threadedly connected to the hydraulic pump 11, so that the connecting support plate 12 and the hydraulic pump 11 can be quickly installed. In order to facilitate the insertion and adjustment of the chain 13, the two sides of the connecting support plate 12 are movably connected to the chain 13, and the movable connection can be a clamping connection. According to the size of the pipe diameter, the length of the chain 13 can be quickly retracted and released for adjustment, and the chain 13 and the connecting support plate 12 can be conveniently installed and disassembled.

[0050] The fastening device 1 of the present application has a simple structure and is easy to install. It can provide a strong pressing force and load-bearing force for the B-type sleeves 3 when they are assembled, so that the position of the B-type sleeves 3 after assembly is more accurate, which is convenient for subsequent operations such as welding, and ensures the safety and standardization of the entire repair process. It can also be applied to the assembly and fastening of the B-type sleeves 3 corresponding to various types of pipes 2 to be repaired.

[0051] Furthermore, the hydraulic pump 11 has a threaded section 112 , and a central threaded through hole 121 is opened in the middle of the connecting support plate 12 . The central threaded through hole 121 is threadedly connected to the threaded section 112 .

[0052] In order to realize the threaded connection between the connecting support plate 12 and the hydraulic pump 11, a central threaded through hole 121 is opened in the middle of the connecting support plate 12. Figure 4 As shown, the hydraulic pump 11 is provided with a threaded section 112. Figure 2 As shown, the central threaded through hole 121 of the connecting support plate 12 is configured to match the thread of the threaded section 112 of the hydraulic pump 11 to facilitate connection and disassembly of the connecting support plate 12 and the hydraulic pump 11, further facilitating assembly and disassembly of the fastening device 1.

[0053] Furthermore, the chain 13 adopts a cylindrical pin industrial chain.

[0054] In order to ensure that the chain 13 and the connecting support plate 12 can be firmly connected and the structure is simple and easy to disassemble, the chain 13 adopts an industrial chain with cylindrical pins. The cylindrical pin type chain is easy to disassemble, and when there are different chain lengths, it is convenient to adjust the chain length. The cylindrical pin type chain has a pin shaft, and the pin shaft protruding from the chain provides structural support for the connection between the chain and the connecting support plate. In addition, the length of the chain and the extension length of the pin shaft can also be customized so as to be better applied to the fastening device 1.

[0055] Furthermore, two sides of the connecting support plate 12 are respectively provided with card slots 122 , and the card slots 122 are movably connected with the chain 13 .

[0056] In order to further improve the stability of the connection between the chain 13 and the connecting support plate 12, a card slot 122 is respectively provided on both sides of the connecting support plate 12 to cooperate with the structure of the pin shaft of the chain 13. The card slot 122 is configured to movably engage the pin shaft of the chain 13, thereby facilitating the installation and disassembly of the card slot 122 and the chain 13.

[0057] Furthermore, the slot 122 includes a through slot 1221 and a U-shaped receiving slot 1222 perpendicular to and opposite to the through slot 1221 . The width of the through slot 1221 matches the width of the chain 13 . The oppositely disposed U-shaped receiving slot 1222 is engaged with the pin of the chain 13 .

[0058] The specific structure of the slot 122 includes a through slot 1221 and a U-shaped receiving slot 1222, wherein the through slot 1221 is provided so that the chain 13 can have space to penetrate the connecting support plate 12 and can also facilitate the adjustment of the length of the chain 13, and the U-shaped receiving slot 1222 is provided so that there is space to accommodate the pin of the chain 13. It should be noted that, when the inner diameter of the cross section of the U-shaped receiving slot 1222 is equal to the outer diameter of the cross section circle of the pin, the cross section area of ​​the U-shaped receiving slot 1222 is greater than half of the cross section of the pin, that is, the cross section of the U-shaped receiving slot 1222 is larger than half a circle, and the U-shaped receiving slot 1222 can stably clamp the pin. When the connecting support plate 12 is connected to a chain 13 of a suitable length, the two ends of the pin need to be respectively installed in the relatively arranged U-shaped receiving slots 1222 and firmly clamped.

[0059] Furthermore, the middle area of ​​the connecting support plate 12 is configured as a reinforcement section, and the thickness of the reinforcement section is greater than the thickness of other sections.

[0060] In order to increase the load-bearing capacity of the connecting support plate 12, the middle area of ​​the connecting support plate is thickened. Figure 5 As shown, the connecting bracket 12 can bear a large weight even if it is small in size.

[0061] Furthermore, a single set of fastening devices is arranged outside the B-type sleeve.

[0062] The use of a single set of fastening devices 1 is an implementation method thereof, and is applied to the repair of straight pipes. During the repair of straight pipes, a set of fastening devices 1 can be used on the outside of the B-type sleeve 3 to achieve the purpose of the operation. The fastening device 1 used in a single set not only has a fastening function, but also has the function of adjusting the ovality of the B-type sleeve 3, thereby ensuring the uniformity of the gap in subsequent welding.

[0063] Furthermore, two or more sets of fastening devices are arranged on the outside of the B-type sleeve.

[0064] The second embodiment of the application of two or more sets of fastening devices 1 is to be used in conjunction with each other, which is applied to the pipeline to be repaired in an inclined section. When the pipeline to be repaired is an inclined section, the use of two or more sets of fastening devices 1 in conjunction with each other can achieve the purpose of the operation. When two or more sets of fastening devices 1 are used in conjunction with each other, not only can they limit the B-type sleeve 3 under construction when the slope of the pipeline to be repaired is too large, but they can also prevent the B-type sleeve 3 from sliding down.

[0065] It should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0066] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A B-type sleeve assembly fastening device, characterized in that: It comprises a hydraulic pump (11) abutting against a B-type sleeve (3), the hydraulic pump (11) being threadedly connected to a connecting support plate (12), the B-type sleeve (3) being circumferentially wrapped with a chain (13), and the two ends of the chain (13) being movably connected to the two sides of the connecting support plate (12) respectively.

2. The B-type sleeve assembly fastening device according to claim 1, characterized in that: The hydraulic pump (11) has a threaded section (112), a central threaded through hole (121) is provided in the middle of the connecting support plate (12), and the central threaded through hole (121) is threadedly matched with the threaded section (112).

3. The B-type sleeve assembly fastening device according to claim 1, characterized in that: The chain (13) is a cylindrical pin industrial chain.

4. The B-type sleeve assembly fastening device according to claim 3, characterized in that: The two sides of the connecting support plate (12) are respectively provided with clamping grooves (122), and the clamping grooves (122) are movably clamped with the chain (13).

5. The B-type sleeve assembly fastening device according to claim 4, characterized in that: The clamping groove (122) comprises a through groove (1221) and a U-shaped receiving groove (1222) which is perpendicular to and opposite to the through groove (1221); the width of the through groove (1221) matches the width of the chain (13); and the U-shaped receiving groove (1222) which is opposite to the through groove (1221) is clamped with the pin shaft of the chain (13).

6. The B-type sleeve assembly fastening device according to claim 5, characterized in that: The middle area of ​​the connecting support plate (12) is arranged as a reinforcement section, and the thickness of the reinforcement section is greater than the thickness of other sections.

7. The B-type sleeve assembly fastening device according to any one of claims 1 to 6, characterized in that: A single set of the fastening device is arranged outside the B-type sleeve.

8. The B-type sleeve assembly fastening device according to any one of claims 1 to 6, characterized in that: Two or more sets of fastening devices are arranged outside the B-type sleeve.

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