Flange hole alignment rapid correction centering rotary sleeve tool

Abstract

The invention discloses a rapid correction centering rotary sleeve tool for flange hole alignment. The tool comprises a centering stopper rod, a flange plug sleeve and a hexagonal head rotary sleeve. And the centering stopper rod penetrates through the flange hole of the paired pipeline through the flange plug sleeve, and then is wedged into the flange hole on the other side through the hexagonal head rotary sleeve. When the device is used, the two centering stopper rods are sleeved with the flange plug sleeves and are inserted into to-be-corrected paired pipeline flange holes with the two ends assembled oppositely, the hexagonal-head rotary sleeves are pressed into the flange holes on the other side, then the hexagonal-head rotary sleeves are rotated clockwise by 180 degrees, and the two ends of the to-be-corrected paired pipeline flange holes are matched with the two ends of the to-be-corrected paired pipeline flange holes. And the staggered assembled flange holes are forced to be aligned by extruding the variable curved surface inner cavity of the hexagonal head rotary sleeve by the centering stopper rod, so that the aim of quickly aligning the whole pipeline flange of which the two ends are oppositely assembled is fulfilled. The flange hole alignment rapid correction centering rotary sleeve tool is ingenious in structure, easy and convenient to operate, capable of solving the problem that when pressure gas pipelines are butted and installed on site, the pipelines are eccentric or dislocated and are difficult to install, time-saving and efficient, and the labor intensity of site constructors is greatly relieved.

Description

Technical Field

[0001] This invention relates to the field of flange hole alignment tools used in pipeline laying construction, and more particularly to a flange hole quick alignment and centering screw sleeve tool. Background Technology

[0002] Gas pipelines are important hardware in the energy and chemical industry. During their installation, flanges and pipes often become misaligned or out of alignment. Finding a quick, safe, and easy way to align them can directly improve the quality and efficiency of pipeline installation.

[0003] Currently, in the field of gas pipeline construction, the main methods for aligning or correcting the flange holes of assembled pipelines are manual alignment and mechanical alignment. Manual alignment is currently the most common method. It involves using steel levers, crowbars, or other auxiliary tools to manually push and pry the flanges together, ensuring that the flange holes are aligned and concentric. However, due to the varied and complex on-site conditions and the diverse types of pipelines being assembled, manual alignment is often time-consuming and labor-intensive, and accidents frequently occur if the operation is not performed correctly.

[0004] Existing mechanical alignment uses a steel mechanism that needs to be installed on the pipe flange and then adjusted by corresponding operations to correct misaligned flange holes. Due to mechanical structure or other reasons, such applications are only occasionally reported and have not been widely promoted.

[0005] Therefore, in order to solve the problem of misalignment and non-centering of flange holes during the installation of pipeline flanges, which affects the installation efficiency and quality, this invention proposes a flange hole alignment and centering screw sleeve tool for pipeline flange assembly. It is not only simple in structure and easy to operate, but also fast and labor-saving, and very suitable for on-site construction. Summary of the Invention

[0006] In view of this, the present invention provides a flange hole quick-alignment centering sleeve tool for aligning flanges in a pipe assembly.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A flange hole-aligning and centering sleeve tool includes:

[0009] 1. Centering plug rod; 2. Flange plug sleeve; 3. Hexagonal head screw sleeve;

[0010] The centering plug 1 passes through the flange hole 4-2 of the assembled pipe 4 via the flange plug sleeve 2, and is then inserted into the flange hole 4-2 from the other side by the hexagonal head screw sleeve 3.

[0011] Preferably, the centering rod 1 has a smooth, slender stainless steel cylinder body, and the end of the centering rod 1 is a hexagonal head 3-1, or can be designed as an annular head as needed.

[0012] The above operations make it easy to pull.

[0013] Preferably, the outer diameter of the centering plug 1 is equivalent to the inner diameter of the flange plug sleeve 2, and the outer diameter of the flange plug sleeve 2 is equivalent to the diameter of the flange hole 4-2 of the pipe 4 to be corrected.

[0014] After the above operation is performed, the centering plug will not loosen or wobble when it is inserted into the flange hole of the pipe and the centering plug extends out from the other side.

[0015] Preferably, the hexagonal head sleeve 3 has hexagonal ends; the sleeve 3-3 with the hexagonal head sleeve 3 is a hollow cylindrical column, and the inner cavity of the hollow cylindrical column has a variable curvature structure, which is divided into a thin-walled region 3-4, a gradually changing wall region 3-5 and a stable region 3-6 according to the different wall thicknesses; there is a semi-circular notch at the edge of the outer surface of the hexagonal head 3-1, which is marked as notch 3-2, indicating that the sleeve 3-3 is in the thin-walled region 3-4 at the marked position.

[0016] The above steps make it easy to clamp and rotate the device with a wrench.

[0017] Preferably, the flange plug sleeve 2 and the hexagonal head screw sleeve 3 can be replaced according to the hole size of the pipe flange 4-1 to be corrected, so as to adapt to the flange hole 4-2 size of different pipes 4.

[0018] Preferably, the outer diameter of the sleeve 3-3 of the hexagonal head sleeve 3 should be equivalent to the diameter of the hole in the pipe flange 4-1.

[0019] Through the above operations, it can be ensured that the hexagonal head sleeve 3 can be smoothly inserted into the hole of the pipe flange 4-1 without any obvious loosening or shaking.

[0020] Preferably, the thin-walled region 3-4 of the hexagonal head sleeve 3 occupies the 90-degree area with the thinnest wall thickness inside the sleeve 3-3. Its function is to facilitate insertion of the hexagonal head sleeve 3 into the pipe flange 4-1 hole initially, as the centering rod 2 is close to or directly against the flange hole 4-2 wall, making it easier to align the centering rod 2 with the thin-walled region 3-4 and insert it into the pipe flange 4-1 hole. The gradually changing wall region 3-5 of the hexagonal head sleeve 3 occupies the 180-degree area where the wall thickness gradually changes from the thinnest thickness in the thin-walled region 3-4 to the thickest thickness in the stable region 3-6. Its function is to allow the hexagonal head sleeve 3 to be clamped with a wrench after insertion into the pipe flange 4-1 hole. The hexagonal head 3-1 is rotated 270 degrees clockwise. The rod of the centering plug 2 will slide from the thin-walled region 3-4 into the gradual wall region 3-5, and continuously squeeze the inner wall of the gradual wall region 3-5 as the angle rotates until it slides into the stable region. The stable region 3-6 of the hexagonal head sleeve 3 is the 90-degree area with the thickest inner wall of the sleeve 3-3. Its function is that when the centering plug 2 slides into this region, the rod of the centering plug 2 falls into the arc of the stable region 3-6, which is close to 90 degrees. Without external force, it will remain stable and will not slide into other regions on its own. At this time, the centering plug 2 is completely concentric with the outer circle of the sleeve 3-3 of the hexagonal head sleeve 3, and also concentric with the flange hole 4-2 into which it is inserted, thereby achieving the purpose of aligning the pipe flange 4-1.

[0021] Preferably, the edge of the hexagonal head screw sleeve 3-3 is chamfered inward at 45 degrees. This is to prevent it from hitting the end of the centering rod 2 when the hexagonal head screw sleeve 3 is inserted. The end of the centering rod 2 is also chamfered to facilitate its smooth insertion into the hexagonal head screw sleeve.

[0022] Preferably, the hexagonal head 3-1 of the hexagonal head sleeve 3 has a central light-emitting hole that communicates with the inner cavity of the sleeve 3-3.

[0023] The above operations facilitate observation of the position of the centering plug rod 2 when inserting the hexagonal head screw sleeve 3. Simultaneously, the marking 3-2 on the hexagonal head screw sleeve 3 allows for easy confirmation of the insertion position.

[0024] Preferably, at least two sets of flange hole quick-alignment centering sleeve tools are required for calibrating the pipe flange 4-1 hole. The angle of the flange hole where the centering sleeve tool is installed should be 90 degrees. When two sets of centering sleeve tools cannot fully calibrate the flange hole, an additional set of centering sleeve tools is added. The additional set is installed in the same direction as the pipe flange 4-1 hole with the largest deviation, or at a diagonal position opposite to the first two sets of centering sleeve tools.

[0025] The present invention achieves the following technical effects compared to the prior art:

[0026] (1) The flange hole quick correction centering sleeve tool provided by the present invention has a simple and lightweight overall design, and has the advantages of simple and convenient use and operation, safety and portability, high construction efficiency, and wide applicability to pipe flange models.

[0027] (2) The structural design of the present invention adopts the principle of indirect sliding extrusion of the centering column with irregular curved surface. The centering plug is inserted into the flange hole on one side through the flange plug sleeve, and the hexagonal head screw sleeve is inserted into the flange hole on the other side and covers the protruding centering plug. By rotating the hexagonal head screw sleeve clockwise by 270 degrees, the misaligned flange hole is indirectly squeezed by the centering plug, so as to achieve the purpose of being concentric with the front flange hole.

[0028] (3) The present invention has a simple design structure, is easy to operate, saves time and effort, and is very suitable for on-site construction. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the flange hole quick-alignment centering sleeve tool of the present invention;

[0030] Figure 2 These are multi-directional views and cross-sectional views of the hexagonal head sleeve of the present invention;

[0031] Figure 3 This is a cross-sectional view of the centering sleeve tool of the present invention installed on the flange hole of the pipe assembly;

[0032] Figure 4 This is a cross-sectional view of the hexagonal head screw sleeve of the present invention inserted into the centering plug rod and rotated 90 degrees and 270 degrees;

[0033] Figure 5 This is a front view of the centering sleeve tool of the present invention installed on the flange hole of the pipe assembly;

[0034] In the diagram: 1. Centering plug; 2. Flange plug sleeve; 3. Hexagonal head screw sleeve; 4. Pipe; 3-1. Hexagonal head; 3-2. Marking defect; 3-3. Screw sleeve; 3-4. Thin-walled region; 3-5. Gradual change wall region; 3-6. Stable region; 4-1. Pipe flange; 4-2. Flange hole. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This invention discloses a flange hole-aligning and centering sleeve tool, comprising:

[0037] 1. Centering plug rod; 2. Flange plug sleeve; 3. Hexagonal head screw sleeve;

[0038] The centering plug 1 passes through the flange hole 4-2 of the assembled pipe 4 via the flange plug sleeve 2, and is then inserted into the flange hole 4-2 from the other side by the hexagonal head screw sleeve 3.

[0039] The centering rod 1 has a smooth, slender stainless steel cylinder body and a hexagonal head 3-1 at the end, or it can be designed as a ring head as needed for easy pulling.

[0040] The outer diameter of the centering plug 1 is equivalent to the inner diameter of the flange sleeve 2, and the outer diameter of the flange sleeve 2 is equivalent to the diameter of the flange hole 4-2 of the pipe 4 to be corrected. After the flange sleeve is inserted into the flange hole of the pipe, the centering plug will not have obvious loosening or shaking when it extends from the other side.

[0041] The hexagonal head screw sleeve 3 has hexagonal ends, which are convenient for clamping and rotating with a wrench; the screw sleeve 3-3 with the hexagonal head screw sleeve 3 is a hollow cylindrical cylinder. The inner cavity of the hollow cylindrical cylinder has a variable curvature structure, which is divided into a thin-walled region 3-4, a gradually changing wall region 3-5 and a stable region 3-6 according to the different wall thicknesses; there is a semi-circular notch at the edge of the outer surface of the hexagonal head 3-1, which is marked as notch 3-2, indicating that the screw sleeve 3-3 is in the thin-walled region 3-4 at the marked position.

[0042] The flange plug sleeve 2 and the hexagonal head screw sleeve 3 can be replaced according to the size of the flange 4-1 hole of the pipe to be calibrated, so as to adapt to the flange hole 4-2 size of different pipes 4.

[0043] The outer diameter of the sleeve 3-3 of the hexagonal head sleeve 3 should be equivalent to the diameter of the hole in the pipe flange 4-1.

[0044] This ensures that the hexagonal head sleeve 3 can be smoothly inserted into the pipe flange 4-1 hole without any obvious loosening or shaking.

[0045] The thin-walled region 3-4 of the hexagonal head sleeve 3 occupies the thinnest 90-degree area of ​​the inner wall of the sleeve 3-3. Its function is to facilitate insertion of the hexagonal head sleeve 3 into the pipe flange 4-1 hole for the first time, as the centering rod 2 is close to or directly against the wall of the flange hole 4-2. This makes it easier to align the centering rod 2 with the thin-walled region 3-4 of the hexagonal head sleeve 3 and insert it into the pipe flange 4-1 hole. The gradually changing wall region 3-5 of the hexagonal head sleeve 3 occupies the 180-degree area of ​​the inner wall of the sleeve 3-3, where the wall thickness gradually changes from the thinnest in the thin-walled region 3-4 to the thickest in the stable region 3-6. Its function is to allow the hexagonal head 3-5 to be clamped with a wrench after the hexagonal head sleeve 3 is inserted into the pipe flange 4-1 hole. 1. Rotate clockwise 270 degrees. The centering plug 2 will slide from the thin-walled zone 3-4 into the gradually changing wall zone 3-5. As the angle rotates, it will continuously squeeze the inner wall of the gradually changing wall zone 3-5 until it slides into the stable zone. The stable zone 3-6 of the hexagonal head sleeve 3 is the 90-degree area with the thickest inner wall of the sleeve 3-3. Its function is that when the centering plug 2 slides into this zone, the body of the centering plug 2 falls into the stable zone 3-6 within a nearly 90-degree arc. Without external force, it will remain stable and will not slide into other areas on its own. At this time, the centering plug 2 is completely concentric with the outer circle of the sleeve 3-3 of the hexagonal head sleeve 3, and also concentric with the flange hole 4-2 into which it is inserted, thereby achieving the purpose of aligning the pipe flange 4-1.

[0046] The edge of the hexagonal head screw sleeve 3-3 is chamfered inward at 45 degrees. This is to prevent it from hitting the end of the centering rod 2 when the hexagonal head screw sleeve 3 is inserted. The end of the centering rod 2 is also chamfered to facilitate its smooth insertion into the hexagonal head screw sleeve.

[0047] The hexagonal head 3-1 of the hexagonal head sleeve 3 has a central opening and is connected to the inner cavity of the sleeve 3-3.

[0048] Its function is to facilitate observation of the position of the centering plug rod 2 when inserting the hexagonal head screw sleeve 3, and to easily confirm the insertion position in conjunction with the marking 3-2 on the hexagonal head screw sleeve 3.

[0049] The alignment of the pipe flange 4-1 hole requires at least two sets of flange alignment centering sleeve tools. The angle of the flange hole where the centering sleeve tool is installed should be 90 degrees. If two sets of centering sleeve tools cannot fully align the flange hole, add another set of centering sleeve tools. The additional set should be installed in the same direction as the pipe flange 4-1 hole with the largest deviation, or at the diagonal position of the first two sets of centering sleeve tools.

[0050] In use, two centering plugs 1 are fitted onto flange plugs 2 and inserted into the flange holes 4-2 of the assembled pipes 4 with their ends to be aligned. Hexagonal head sleeves 3 are then pressed into the flange holes 4-2 on the opposite sides and rotated 180 degrees clockwise. This forces the misaligned flange holes back into alignment by pressing the curved inner cavity of the hexagonal head sleeves with the centering plugs, thus achieving the purpose of aligning the assembled pipe flanges.

[0051] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A flange hole-aligning and centering sleeve tool, characterized in that, include: Centering plug (1), flange plug sleeve (2), hexagonal head screw sleeve (3); The centering plug (1) passes through the flange hole (4-2) of the assembled pipe (4) through the flange plug sleeve (2), and is then inserted into the flange hole (4-2) from the other side by the hexagonal head screw sleeve (3).

2. The flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The centering rod (1) has a smooth stainless steel slender cylinder body and the end of the centering rod (1) is a hexagonal head (3-1), or can be designed as an annular head as needed.

3. The flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The outer diameter of the centering plug (1) is equivalent to the inner diameter of the flange plug sleeve (2), and the outer diameter of the flange plug sleeve (2) is equivalent to the diameter of the flange hole (4-2) of the pipe (4) to be corrected.

4. A flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The hexagonal head sleeve (3) has hexagonal ends; the sleeve (3-3) with the hexagonal head sleeve (3) is a hollow cylindrical column, and the inner cavity of the hollow cylindrical column has a variable curvature structure, which is divided into a thin-walled area (3-4), a gradually changing wall area (3-5) and a stable area (3-6) according to the different wall thicknesses; there is a semi-circular notch at the edge of the outer surface of the hexagonal head (3-1) as a marking notch (3-2), indicating that the sleeve (3-3) is in the thin-walled area (3-4) at the marked position.

5. A flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The flange plug sleeve (2) and the hexagonal head screw sleeve (3) can be replaced according to the hole size of the pipe flange (4-1) to be corrected, so as to adapt to the flange hole (4-2) size of different pipes (4).

6. A flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The outer diameter of the sleeve (3-3) of the hexagonal head sleeve (3) should be equivalent to the diameter of the hole of the pipe flange (4-1).

7. A flange hole-aligning and centering sleeve tool according to claim 4, characterized in that, The thin-walled region (3-4) of the hexagonal head sleeve (3) is the 90-degree region with the thinnest wall thickness in the inner cavity of the sleeve (3-3); the gradual wall region (3-5) of the hexagonal head sleeve (3) is the 180-degree region with a gradual change in wall thickness in the inner cavity of the sleeve (3-3), and the wall thickness gradually changes from the thinnest thickness in the thin-walled region (3-4) to the thickest thickness in the stable region (3-6); the stable region (3-6) of the hexagonal head sleeve (3) is the 90-degree region with the thickest wall thickness in the inner cavity of the sleeve (3-3).

8. A flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The edge of the hexagonal head sleeve (3) sleeve (3-3) is chamfered inward at 45 degrees, and the end of the centering plug (2) is also chamfered.

9. A flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The hexagonal head (3-1) of the hexagonal head sleeve (3) has a central light hole and communicates with the inner cavity of the sleeve (3-3).

10. A flange hole-aligning and centering sleeve tool according to claim 1, characterized in that, The alignment of the pipe flange (4-1) hole requires at least two sets of the flange hole quick alignment centering sleeve tools. The angle of the flange hole where the centering sleeve tools are installed should be 90 degrees. When two sets of the centering sleeve tools cannot fully align the flange hole, an additional set of the centering sleeve tools is added. The additional set is installed in the same direction as the pipe flange (4-1) hole with the largest deviation, or at the diagonal position of the first two sets of the centering sleeve tools.

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