An adjustable flange spool for pipeline installation

Abstract

The utility model discloses a kind of adjustable flange short sections for pipeline installation, including first pipe section, second pipe section, the first pipe section inserts into second pipe section, the first pipe section, second pipe section are sealed by first sealing piece, the first pipe section outer wall is rotationally connected adjusting sleeve in the end close to second pipe section, the adjusting sleeve is threadedly connected with second pipe section outer wall, the cooperation size between the first pipe section, second pipe section is adjusted by rotating adjusting sleeve;The two ends of the first pipe section, second pipe section away from each other are provided with ball head flange assembly.The utility model adjusts the length of short section by the thread of adjusting sleeve, and the adjustment amount can accurately adapt to assembly requirement, so that installation bolt is uniformly stressed.

Description

Technical Field

[0001] This utility model relates to the field of petroleum development technology, specifically to an adjustable flange short section for pipeline installation. Background Technology

[0002] Currently, with the development of shale oil in China and the further expansion of the scale of deep and ultra-deep wells, pressure controlled drilling technology is being used more and more frequently.

[0003] In practical applications, controlled pressure drilling technology requires on-site technicians to install the controlled pressure drilling equipment. This installation process involves installing numerous controlled pressure pipelines. Because the layout around each drilling rig varies, it's easy for the flanges at both ends of a pipeline to become misaligned, either in height or laterally. Tools are then needed to forcibly align the flanges for installation.

[0004] The bolts at the flanges of the pressure-controlled pipeline installed in the above manner experience different stresses, making installation laborious and prone to leaks due to inadequate bolt tightening. Currently, the main solution is to use short sections (0.5 meters) and universal elbows to adjust the pipeline length and angle. However, this method cannot adjust for small distance differences (less than 0.5 meters), and the angle between the pipeline and the horizontal plane after installation is between 0° and 90°, making it impossible to achieve horizontal and vertical alignment, which is detrimental to the installation of subsequent accessories.

[0005] Announcement No. CN212273344U discloses a ball flange device, including a connecting sleeve assembly, a welding flange, a spherical connection assembly, and a pre-tightening assembly; the connecting sleeve assembly includes an outer connecting sleeve A and an outer connecting sleeve B; the spherical connection assembly includes a hollow connecting shaft and a spherical body; the pre-tightening assembly includes a compression spring and an adjusting bolt, and the outer connecting sleeve A and the outer connecting sleeve B are provided with threaded holes and spring receiving holes; the spherical connection assembly also includes a rotation limiting part provided on the concave surface of the spherical body for limiting the rotation angle of the spherical body; the ball flange device also includes a self-testing assembly.

[0006] The existing technology for connecting two pipe ends requires measuring the straight pipe length after determining the axis, resulting in low construction efficiency.

[0007] Announcement No. CN203549193U discloses a spherical flange joint structure, including a spherical flange, the open ball cavity of which fits into the open ball cavity of a spherical flange ferrule via a spherical flange core sleeve; an elastic sealing ring and a metal sealing ring are provided between the spherical flange and the spherical flange ferrule. In use, the non-open ball cavity side of the spherical flange is welded to a first pipeline, and the rectangular cavity side of the spherical flange ferrule is directly or through a standard welding flange to a second pipeline.

[0008] The existing technology for connecting two pipe ends requires measuring the straight pipe length after determining the axis, resulting in low construction efficiency.

[0009] Publication No. CN117514102A discloses a thermal recovery wellhead compensation device with buffer and anti-detachment function, including symmetrically distributed oil pipes, each of which is fixedly connected to a first flange. The first flange is bolted to a second flange. Oil is transported from the right-side oil pipe to the left. The second flange on the left side is fixedly connected to a fixed sleeve and a sealing sleeve. A first ring is slidably connected between the fixed sleeve and the sealing sleeve. A bellows is fixedly connected to the first ring. The side of the bellows away from the first ring is fixedly connected to the second flange on the right side. The fixed sleeve is provided with an exhaust hole.

[0010] The existing technology requires a flange connection between two straight pipe fittings for the compensation device, which results in low construction efficiency.

[0011] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of this utility model. For more technical features, technical problems to be solved, and beneficial effects of this utility model, the above-disclosed technical documents do not provide any technical inspiration. Utility Model Content

[0012] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention provides an adjustable flange short section for pipeline installation.

[0013] To achieve the above objectives, the present invention adopts the following technical solution:

[0014] An adjustable flange short section for pipeline installation includes a first pipe section and a second pipe section. The first pipe section is inserted into the second pipe section, and the first and second pipe sections are sealed together by a first sealing element. An adjusting sleeve is rotatably connected to the outer wall of the first pipe section at one end near the second pipe section. The adjusting sleeve is threadedly connected to the outer wall of the second pipe section. The fitting dimensions between the first and second pipe sections are adjusted by rotating the adjusting sleeve. Ball head flange assemblies are provided at the two ends of the first and second pipe sections that are far apart from each other.

[0015] Furthermore, a U-shaped ring is provided on the outer wall of the first pipe section, and a convex ring is provided on the inner wall of the adjusting sleeve. A slit is provided at the end of the adjusting sleeve away from the second pipe section, which passes through the convex ring to form a segmented structure. The segmented structure allows the convex ring to be engaged with the U-shaped ring, and the convex ring and the U-shaped ring are in a clearance fit.

[0016] Furthermore, the U-shaped ring has a rectangular annular cavity inside, and the convex ring has a rectangular cross-section, forming a rectangular mating surface.

[0017] Furthermore, the convex ring is located at the end of the inner wall of the adjusting sleeve away from the second pipe section.

[0018] Furthermore, a handle is provided on the outer wall of the adjusting sleeve.

[0019] Furthermore, the outer wall of the first pipe section is provided with a reduced-diameter step facing the second pipe section to form a small-diameter section. The reduced-diameter step is inside the adjusting sleeve, and the small-diameter section of the first pipe section is inserted into the second pipe section.

[0020] Furthermore, the reduced diameter step is a conical surface, and the end of the second pipe section near the first pipe section is provided with a conical surface that matches the reduced diameter step.

[0021] Furthermore, the ball head flange assembly includes a spherical outer flange and a spherical inner flange;

[0022] Specifically, ball joints are provided at the two ends of the first pipe section and the second pipe section that are far apart;

[0023] Specifically, the spherical outer flange and the spherical inner flange are rotatably sleeved on the outer wall of the ball head, the spherical outer flange is far away from the first pipe section or the second pipe section, and the spherical inner flange is close to the first pipe section or the second pipe section;

[0024] Specifically, a second sealing element is provided between the spherical outer flange and the ball head;

[0025] Specifically, the spherical outer flange and the spherical inner flange are connected by a connector;

[0026] Specifically, the spherical outer flange and the spherical inner flange are provided with corresponding flange holes.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] This invention adjusts the length of the short section by adjusting the thread of the adjusting sleeve. The adjustment amount can accurately adapt to the assembly requirements and make the installation bolts bear force evenly. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of an adjustable flange short section for pipeline installation according to this utility model.

[0030] Figure 2 yes Figure 1 Schematic diagram at point A in the middle.

[0031] Figure 3 yes Figure 1 Schematic diagram of section B in the middle.

[0032] Figure 4 This is a schematic diagram of the present invention installed on a process pipeline.

[0033] In the diagram: 1-ball head; 2-spherical outer flange; 3-spherical inner flange; 4-connector; 5-second seal; 6-adjusting sleeve; 61-convex ring; 62-handle rod; 7-first seal; 8-first pipe section; 81-U-ring; 82-reduction step; 9-second pipe section; 10-first process pipeline; 11-second process pipeline. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1:

[0036] Please see Figures 1 to 3 This utility model provides an adjustable flange short section for pipeline installation, including a first pipe section 8 and a second pipe section 9. The first pipe section 8 is inserted into the second pipe section 9, and the first pipe section 8 and the second pipe section 9 are sealed by a first sealing element 7. An adjusting sleeve 6 is rotatably connected to the outer wall of the first pipe section 8 at one end near the second pipe section 9. The adjusting sleeve 6 is threadedly connected to the outer wall of the second pipe section 9. The fitting dimensions between the first pipe section 8 and the second pipe section 9 can be adjusted by rotating the adjusting sleeve 6. Ball head flange assemblies are provided at the two ends of the first pipe section 8 and the second pipe section 9 that are far apart from each other.

[0037] Specifically, a U-shaped ring 81 is provided on the outer wall of the first pipe section 8, and a convex ring 61 is provided on the inner wall of the adjusting sleeve 6. A slit is provided at the end of the adjusting sleeve 6 away from the second pipe section 9, which passes through the convex ring 61 to form a segmented structure and obtain deformation capability. The convex ring 61 is inserted into the U-shaped ring 81 by the deformation capability of the segmented structure. The convex ring 61 and the U-shaped ring 81 are in clearance fit. Lubricating oil is filled into the U-shaped ring 81 to ensure rotation effect.

[0038] Preferably, the U-shaped ring 81 has a rectangular annular cavity, and the convex ring 61 has a rectangular cross-section. When installing the adjusting sleeve 6, the split convex ring 61 of the adjusting sleeve 6 is first opened by an auxiliary tube / ring with an inner diameter larger than the outer diameter of the U-shaped ring 81. The auxiliary tube / ring and the adjusting sleeve 6 are then placed on the outside of the first tube section 8, so that the split convex ring 61 corresponds to the U-shaped ring 81. The auxiliary tube / ring is then pulled out, so that the split convex ring 61 is folded into the U-shaped ring 81. The rectangular mating surface has no radial force, so the split convex ring 61 and the U-shaped ring 81 will not fall off. The auxiliary tube / ring is a conventional auxiliary component for the assembly of the split ring, so its structure will not be described in detail.

[0039] Preferably, the convex ring 61 is located at the end of the inner wall of the adjusting sleeve 6 away from the second pipe section 9, thereby reducing the slit length.

[0040] Specifically, the outer wall of the adjusting sleeve 6 is provided with a handle rod 62, which facilitates rotation via a socket wrench.

[0041] Preferably, the adjusting sleeve 6 is connected to the second pipe section 9 by a trapezoidal thread, which has a self-locking property, so that the flange short section is stable after adjustment.

[0042] Specifically, the outer wall of the first pipe section 8 is provided with a reduced diameter step 82 facing the second pipe section 9 to form a small diameter section. The reduced diameter step 82 is inside the adjusting sleeve 6. The small diameter section of the first pipe section 8 is inserted into the second pipe section 9. The reduced diameter step 82 plays a role in extreme positioning.

[0043] Specifically, the reduced diameter step 82 is a conical surface, and the end of the second pipe section 9 near the first pipe section 8 is provided with a conical surface that matches the reduced diameter step 82.

[0044] Preferably, the first sealing element 7 is a sealing ring, and the first sealing element 7 is embedded in the inner wall of the second pipe section 9, and two first sealing elements 7 are provided.

[0045] Furthermore, the ball head flange assembly includes a spherical outer flange 2 and a spherical inner flange 3. Ball heads 1 are provided at the two far-away ends of the first pipe section 8 and the second pipe section 9. The spherical outer flange 2 and the spherical inner flange 3 are rotatably fitted onto the outer wall of the ball head 1. The spherical outer flange 2 is far from the first pipe section 8 or the second pipe section 9, and the spherical inner flange 3 is close to the first pipe section 8 or the second pipe section 9. A second sealing element 5 is provided between the spherical outer flange 2 and the ball head 1. The spherical outer flange 2 and the spherical inner flange 3 are connected by a connector 4. The spherical outer flange 2 and the spherical inner flange 3 are provided with corresponding flange holes. The ball head flange assembly provides rotation and a maximum angular deflection of 15°.

[0046] Specifically, the flange holes are provided in at least three locations and are evenly distributed along the circumference of the spherical outer flange.

[0047] Preferably, the second sealing element 5 is a sealing ring.

[0048] Preferably, the connector 4 is an internal hex bolt, the connector 4 passes through the spherical outer flange 2 and is inserted into the spherical inner flange 3, and at least three connectors 4 are provided and are evenly distributed along the circumference of the spherical outer flange 2.

[0049] Example 2:

[0050] In this embodiment, the adjustable flange short section for pipeline installation described in Embodiment 1 is installed into the drilling equipment pipeline process, as follows: Figure 4 As shown.

[0051] Connect the ball head flange assembly of the first pipe section 8 to the connecting flange of the first process pipeline 10 using bolts and nuts. Rotate the ball head flange assembly of the first pipe section 8 and the ball head flange assembly of the second pipe section 9 to align the ball head flange assembly of the second pipe section 9 with the connecting flange of the second process pipeline 11. Insert the bolts and rotate the adjusting sleeve 6 by rotating the handle rod 62. The second pipe section 9 extends and slides along the bolts until it fits against the connecting flange of the second process pipeline 11. Tighten all bolts and nuts to complete the installation.

[0052] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0053] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0055] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable flange short section for pipeline installation, comprising a first pipe section and a second pipe section, wherein the first pipe section is inserted into the second pipe section, and the first pipe section and the second pipe section are sealed together by a first sealing element, characterized in that, An adjusting sleeve is rotatably connected to the outer wall of the first pipe section at one end near the second pipe section. The adjusting sleeve is threadedly connected to the outer wall of the second pipe section. The fitting dimensions between the first pipe section and the second pipe section are adjusted by rotating the adjusting sleeve. Ball head flange assemblies are installed at the two far ends of the first and second pipe sections.

2. The adjustable flange short section for pipeline installation according to claim 1, characterized in that, The outer wall of the first pipe section is provided with a U-shaped ring, the inner wall of the adjusting sleeve is provided with a convex ring, and the end of the adjusting sleeve away from the second pipe section is provided with a slit that passes through the convex ring to form a segmented structure. The segmented structure allows the convex ring to be engaged with the U-shaped ring, and the convex ring and the U-shaped ring are in clearance fit.

3. An adjustable flange short section for pipeline installation according to claim 2, characterized in that, The U-shaped ring has a rectangular cavity inside, and the convex ring has a rectangular cross-section, forming a rectangular mating surface.

4. An adjustable flange short section for pipeline installation according to claim 2, characterized in that, The convex ring is located on the inner wall of the adjusting sleeve at the end away from the second pipe section.

5. An adjustable flange short section for pipeline installation according to claim 1, characterized in that, A handle is provided on the outer wall of the adjusting sleeve.

6. An adjustable flange short section for pipeline installation according to claim 1, characterized in that, The outer wall of the first pipe section is provided with a reduced diameter step facing the second pipe section, forming a small diameter section. The reduced diameter step is inside the adjusting sleeve, and the small diameter section of the first pipe section is inserted into the second pipe section.

7. An adjustable flange short section for pipeline installation according to claim 6, characterized in that, The reduced diameter step is a conical surface, and the end of the second pipe section near the first pipe section is provided with a conical surface that matches the reduced diameter step.

8. An adjustable flange short section for pipeline installation according to claim 1, characterized in that, The ball head flange assembly includes a spherical outer flange and a spherical inner flange; Ball joints are provided at the two far-away ends of the first and second pipe sections; The spherical outer flange and the spherical inner flange are rotatably sleeved on the outer wall of the ball head. The spherical outer flange is far away from the first pipe section or the second pipe section, and the spherical inner flange is close to the first pipe section or the second pipe section. A second sealing element is provided between the spherical outer flange and the ball head; The spherical outer flange and the spherical inner flange are connected by a connector; The spherical outer flange and the spherical inner flange are provided with corresponding flange holes.

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