Connecting method for movable flange plate and steel pipe

Abstract

The invention provides a connection method of a movable flange plate and a steel pipe, the movable flange plate comprises a plate body having a first plate surface and a second plate surface which are oppositely arranged, the first plate surface is used for being connected with the plate surface of a fixed flange plate, the middle part of the plate body is also provided with a connecting hole which is through along the axial direction of the plate body, and the plate body sleeves the periphery of the steel pipe through the connecting hole; the multiple fixing assemblies are arranged on the second disc face at intervals in the circumferential direction of the disc body, each fixing assembly comprises a connecting piece and a fixing piece, the connecting pieces are connected with the second disc face, the fixing pieces are arranged on the connecting pieces and can move in the radial direction of the disc body relative to the connecting pieces, and the ends, close to the middle of the disc body, of the fixing pieces are used for making contact with the peripheral wall of the steel pipe. And the steel pipe is clamped and fixed. According to the scheme, the butt joint efficiency of the steel pipes with different end face angles is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flanges, and in particular to a method for connecting a movable flange and a steel pipe. Background Art

[0002] The zigzag steel pipe is welded by two steel pipes with an angle between their axes. The end face angles of the two steel pipes at the connection point are generally different. Before welding, flanges are needed to align the two steel pipes. However, traditional flanges are standard parts and therefore cannot meet the needs of docking steel pipes with angles between their axes.

[0003] In related technologies, flanges are usually customized according to the end face angle of the steel pipe. This not only increases the processing cost of the flange, but also reduces the versatility of the flange, which is not conducive to the docking of steel pipes with different end face angles. Summary of the Invention

[0004] The problem solved by the present invention is how to improve the butt-joining efficiency of steel pipes with different end face angles.

[0005] In order to solve the above problems, the present invention provides a method for connecting a movable flange and a steel pipe.

[0006] In the first aspect, the present invention provides a movable flange, comprising: a disk body, having a first disk surface and a second disk surface arranged opposite to each other, the first disk surface being used to connect with the disk surface of a fixed flange, the middle portion of the disk body being further provided with a connecting hole penetrating along its own axial direction, the disk body being sleeved on the outer circumference of a steel pipe through the connecting hole; a plurality of fixing components being arranged at intervals along the circumference of the disk body on the second disk surface, each of the fixing components comprising a connecting member and a fixing member, the connecting member being connected to the second disk surface, the fixing member being provided on the connecting member and being capable of moving radially along the disk body relative to the connecting member, the end of the fixing member close to the middle portion of the disk body being used to contact the outer circumferential wall of the steel pipe to clamp and fix the steel pipe.

[0007] The beneficial effects of the method for connecting the movable flange and the steel pipe of the present invention are:

[0008] The first disc surface can be connected to either the disc surface of a fixed flange or the first disc surface of another movable flange, allowing the movable flange to adapt to a variety of installation requirements and increasing its versatility and adaptability. Furthermore, the disc body is mounted on the outer circumference of the steel pipe through a central connection hole, facilitating quick installation of the disc body, effectively improving installation efficiency and reducing installation time and labor costs. Furthermore, the multiple fixing components can secure the steel pipe from multiple directions, ensuring a secure connection between the steel pipe and the flange, and preventing loosening or falling off during the docking process. Furthermore, because the fixings can move radially along the disc body, after the first disc surface is connected to the disc surface of another flange, the fixings can be adjusted to secure the disc body to the steel pipe. Therefore, the movable flange can be adjusted to accommodate different steel pipe end angles, thereby connecting and securing steel pipes with different end angles. This expands the applicability of the movable flange, facilitates docking of steel pipes with different end angles, and improves docking efficiency between steel pipes.

[0009] Optionally, the connecting member includes: a first connecting block, one side of which is connected to the second disk surface; a first connecting tube, which is arranged on the other side of the first connecting block, and the first connecting tube has a through hole arranged radially along the disk body, and at least part of the fixing member is movably arranged in the through hole; wherein, the first connecting block and the first connecting tube are an integrally formed structure.

[0010] Optionally, an internal thread is provided on the hole wall of the through hole, an external thread matching the internal thread is provided on the peripheral wall of the fixing member, and the fixing member is threadedly connected to the through hole to move relative to the connecting hole.

[0011] Optionally, the through hole extends along the edge of the disk body toward the center of the disk body.

[0012] Optionally, the movable flange has four fixing components, and the four fixing components are evenly arranged along the circumference of the disk body.

[0013] Optionally, the disk body is further provided with a plurality of mounting holes extending axially through the disk body, and the plurality of mounting holes are arranged at intervals along the circumference of the disk body, and fasteners pass through the mounting holes to fix the disk body to the fixed flange or another movable flange.

[0014] Optionally, the disc body is provided with four mounting holes, and the four mounting holes are evenly arranged along the circumference of the disc body.

[0015] Optionally, one mounting hole is provided between every two adjacent fixing components.

[0016] In a second aspect, the present invention provides a method for installing a movable flange, comprising: providing a first steel pipe and a second steel pipe, wherein the connecting end surface of at least one of the first steel pipe and the second steel pipe is not perpendicular to its own axis; fixing a fixed flange to the connecting end of the first steel pipe, and sleeved with a movable flange on the connecting end of the second steel pipe; matching and docking the connecting end of the first steel pipe with the connecting end of the second steel pipe; adjusting the position of the movable flange so that the disk surface of the movable flange contacts the disk surface of the fixed flange; fixing the fixed flange to the movable flange using fasteners; adjusting the fixing member of the movable flange so that one end of the fixing member contacts and is fixed to the outer peripheral wall of the second steel pipe to fix the movable flange on the second steel pipe; removing the fastener and transporting the first steel pipe and the second steel pipe to designated locations respectively; fixing the fixed flange and the movable flange on the first steel pipe and the second steel pipe transported to the designated location using the fastener so that the connecting end of the first steel pipe is docked with the connecting end of the second steel pipe.

[0017] Optionally, the step of fixing the fixed flange to the connecting end of the first steel pipe further comprises: arranging the center of the fixed flange close to the center of the first steel pipe.

[0018] The beneficial effects of the installation method of the movable flange of this embodiment relative to the prior art are the same as those of the above-mentioned movable flange, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a movable flange provided in an embodiment of the present invention;

[0020] Figure 2 A side view of a movable flange provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of a portion of the structure of a movable flange provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the connection structure between a movable flange and a steel pipe provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of the movable flange provided by an embodiment of the present invention after installation with other flanges;

[0024] Figure 6 A flow chart of a method for installing a movable flange provided in an embodiment of the present invention;

[0025] Figure 7This is a flow chart of a method for installing a movable flange provided in an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] Disk body 10, first disk surface 11, second disk surface 12, connecting hole 13, mounting hole 14,

[0028] Steel pipe 20, first steel pipe 21, second steel pipe 22,

[0029] The fixing assembly 30, the connecting member 31, the first connecting block 311, the first connecting cylinder 312, the through hole 313, the fixing member 32, the axial direction X of the disk, and the radial direction Y of the disk. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0031] It should also be noted that the aforementioned Y-axis and X-axis are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation of the present invention.

[0032] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0034] like Figures 1 to 5As shown, in the first aspect, the present invention provides a movable flange, comprising: a disk body 10, having a first disk surface 11 and a second disk surface 12 arranged opposite to each other, the first disk surface 11 being used to connect with the disk surface of a fixed flange, and a connecting hole 13 penetrating along its own axial direction is also provided in the middle of the disk body 10, and the disk body 10 is sleeved on the outer periphery of the steel pipe 20 through the connecting hole 13; a plurality of fixing components 30 are arranged at intervals along the circumference of the disk body 10 on the second disk surface 12, each fixing component 30 includes a connecting member 31 and a fixing member 32, the connecting member 31 is connected to the second disk surface 12, the fixing member 32 is provided on the connecting member 31 and can move relative to the connecting member 31 along the radial direction of the disk body 10, and the end of the fixing member 32 close to the middle of the disk body 10 is used to contact the outer peripheral wall of the steel pipe 20 to clamp and fix the steel pipe 20.

[0035] In this embodiment, the axial direction of the disc body 10 is X, and the radial direction of the disc body 10 is Y, where Y is a radial direction of the disc body 10 .

[0036] In this embodiment, the inner diameter of the connection hole 13 is larger than the outer diameter of the steel pipe 20. This allows the disc 10 to be more easily fitted around the outer circumference of the steel pipe 20, reducing the installation difficulty of the disc 10, especially in situations where space is limited or operation is inconvenient. This improves the installation efficiency of the disc 10 and reduces installation time and labor costs. Furthermore, the steel pipe 20 has a certain amount of room to move within the connection hole 13. This allows for fine-tuning of the relative position of the steel pipe 20 and the flange during installation, ensuring that the central axis of the flange is aligned with the central axis of the steel pipe 20 and that the flange surface is parallel to the connecting end face of the steel pipe 20, thereby improving the accuracy and convenience of the connection. Furthermore, because the multiple fixing assemblies 30 can each move radially and collectively clamp the steel pipe 20, even if the central axis of the flange is at an angle to the central axis of the steel pipe 20, the multiple fixing assemblies 30 can still secure the flange to the outer surface of the steel pipe 20.

[0037] Meanwhile, the material of the disc body 10 can be stainless steel or aluminum alloy, etc., and the specific setting should be selected according to the use environment of the device.

[0038] In this embodiment, in order to connect two steel pipes 20 to form a zigzag steel pipe, the connecting end face of at least one of the steel pipes 20 is not perpendicular to the axis of the steel pipe 20. When the connecting end face of the steel pipe 20 is not perpendicular to the axis of the steel pipe 20, but is relatively inclined, that is, there is a certain inclination angle, it is necessary to use a movable flange to connect to the outer wall of the steel pipe 20. Therefore, at least one steel pipe 20 must be fixed with a movable flange, and the other steel pipe 20 can be fixed with a fixed flange.

[0039] The beneficial effects of the method for connecting the movable flange and the steel pipe of the present invention are:

[0040] The first disc surface 11 can be connected to the disc surface of a fixed flange or to the first disc surface 11 of another movable flange, allowing the movable flange to adapt to a variety of installation requirements and increasing its versatility and adaptability. At the same time, the disc body 10 is sleeved onto the outer periphery of the steel pipe 20 through the central connection hole 13, facilitating the rapid installation of the disc body 10, effectively improving the installation efficiency of the disc body 10 and reducing installation time and labor costs. Furthermore, the multiple fixing assemblies 30 can secure the steel pipe 20 from multiple directions, ensuring that the steel pipe 20 remains securely connected to the flange even when the flange has different inclination angles relative to the steel pipe, and is less likely to loosen or fall off during the docking process. For example, since the fixing member 32 can move radially along the disc body 10, when the first disc surface 11 is connected to the disc surface of other flanges, the disc body 10 and the steel pipe 20 can be connected and fixed by adjusting the fixing member 32. Therefore, the movable flange can adjust the fixing member 32 according to the end face angles of different steel pipes 20, so as to be connected and fixed with steel pipes 20 with different end face angles. This expands the application scope of the movable flange, is conducive to the docking of steel pipes 20 with different end face angles, and also improves the docking efficiency between the steel pipes 20.

[0041] like Figures 1 to 5 As shown, optionally, the connecting member 31 includes: a first connecting block 311, one side of the first connecting block 311 is connected to the second disk surface 12; a first connecting tube 312, arranged on the other side of the first connecting block 311, the first connecting tube 312 has a through hole 313 arranged radially along the disk body 10, and at least part of the fixing member 32 is movably arranged in the through hole 313; wherein, the first connecting block 311 and the first connecting tube 312 are an integrally formed structure.

[0042] The above-described structure facilitates installation of the fixing assembly 30. After connecting the first connecting block 311 to the second disk surface 12, the fixing member 32 is inserted into the through hole 313. This simplifies the installation process and improves assembly installation efficiency. Furthermore, the through hole 313 of the first connecting cylinder 312 is radially arranged in the disk body 10, providing a guide for the movement of the fixing member 32, allowing the fixing member 32 to accurately move radially and contact the outer circumferential wall of the steel pipe 20. Furthermore, the through hole 313 acts as a limiter for the fixing member 32, ensuring its stability during movement and operation, preventing it from shaking or deflecting, and thereby improving the reliability of its connection to the steel pipe 20.

[0043] Furthermore, the first connecting block 311 and the first connecting tube 312 are integrally formed, allowing the entire connecting member 31 to transmit stress more evenly when subjected to force. This reduces the risk of breakage or loosening due to an unreliable connection between the first connecting block 311 and the first connecting tube 312, thereby improving the overall strength and stability of the connecting member 31. Furthermore, the integral molding process reduces processing steps, thereby improving production efficiency and reducing production costs.

[0044] Optionally, an internal thread is provided on the hole wall of the through hole 313 , and an external thread matching the internal thread is provided on the outer peripheral wall of the fixing member 32 . The fixing member 32 is threadedly connected to the through hole 313 to move relative to the connecting hole 13 .

[0045] By configuring the above structure and utilizing threaded transmission, the movement distance of the fixing member 32 within the through-hole 313 can be precisely controlled, thereby achieving accurate clamping of the steel pipe 20. This adapts to steel pipes 20 of varying outer diameters, thereby improving the versatility and adaptability of the tray 10. Furthermore, the threaded connection provides a strong axial force after the fixing member 32 is tightened, maintaining a tight fit between the fixing member 32 and the through-hole 313 and preventing loosening. This ensures a stable connection between the fixing member 32 and the steel pipe 20, ensuring that the tray 10 is securely fixed to the outer circumferential wall of the steel pipe 20.

[0046] like Figures 1 to 5 As shown, optionally, the through hole 313 extends along the edge of the tray body 10 toward the center of the tray body 10 .

[0047] By setting the above structure, when fixing the steel pipe 20, the force applied by the fixing member 32 can be more evenly distributed on the outer periphery of the steel pipe 20, thereby further improving the firmness of fixing the steel pipe 20 and reducing the shaking and displacement of the steel pipe 20 at the connection part.

[0048] like Figures 1 to 5 As shown, optionally, the movable flange has four fixing components 30 , and the four fixing components 30 are evenly arranged along the circumference of the disk body 10 .

[0049] By setting the above structure, the steel pipe 20 can be evenly clamped from four directions, so that the force on the steel pipe 20 in the circumferential direction can be more uniform, thereby ensuring that the connection between the steel pipe 20 and the disc body 10 is more stable.

[0050] Of course, in other embodiments, the four fixing components 30 may also be unevenly arranged along the circumference of the disk body 10, and the specific arrangement should be selected according to the use environment of the device.

[0051] In other embodiments, the number of the fixing components 30 may also be set to five, six, or seven, etc., as long as the fixing requirements of the fixing components 30 can be met.

[0052] like Figures 1 to 5 As shown, optionally, the disk body 10 is further provided with a plurality of mounting holes 14 extending axially through the disk body 10 , and the plurality of mounting holes 14 are arranged at intervals along the circumference of the disk body 10 , and fasteners pass through the mounting holes 14 to fix the disk body 10 to a fixed flange or another movable flange.

[0053] In this embodiment, the fixed flange is also provided with fixing holes corresponding to the mounting holes 14 , and fasteners pass through the mounting holes 14 and the fixing holes in sequence to fix the two.

[0054] like Figures 1 to 5 As shown, optionally, the disc body 10 is provided with four mounting holes 14 , and the four mounting holes 14 are evenly arranged along the circumference of the disc body 10 .

[0055] By providing a plurality of mounting holes 14 , the connection strength between the disc body 10 and other flanges is improved, thereby ensuring the connection strength between the two flanges.

[0056] like Figures 1 to 5 As shown, optionally, a mounting hole 14 is provided between every two adjacent fixing assemblies 30 .

[0057] By setting the above structure, when external force acts on the disc body 10, the mounting hole 14 can play a certain stress dispersion role, avoiding stress concentration in a certain area of the disc body 10, thereby improving the strength and stability of the entire structure and extending the service life of the disc body 10.

[0058] like Figure 6 and Figure 7 As shown, in a second aspect, the present invention provides a method for installing a movable flange, comprising:

[0059] S100: providing a first steel tube 21 and a second steel tube 22, wherein a connecting end surface of at least one of the first steel tube 21 and the second steel tube 22 is not perpendicular to the axis thereof;

[0060] S0: Fix the fixed flange to the connecting end of the first steel pipe 21 and sleeve the movable flange onto the connecting end of the second steel pipe 22; match and dock the connecting end of the first steel pipe 21 with the connecting end of the second steel pipe 22;

[0061] S300: Adjust the position of the movable flange so that the surface of the movable flange contacts the surface of the fixed flange; fix the fixed flange and the movable flange with fasteners;

[0062] S400: Adjust the fixing member 32 of the movable flange so that one end of the fixing member 32 contacts and is fixed to the outer peripheral wall of the second steel pipe 22, thereby fixing the movable flange to the second steel pipe 22;

[0063] S500: Remove the fasteners and transport the first steel pipe 21 and the second steel pipe 22 to designated locations respectively;

[0064] S600: Fix the fixed flanges and the movable flanges on the first steel pipe 21 and the second steel pipe 22 transported to the designated location by fasteners, so that the connecting end of the first steel pipe 21 is butted against the connecting end of the second steel pipe 22 .

[0065] In this embodiment, after step S500 , the connecting end of the first steel pipe 21 and the connecting end of the second steel pipe 22 may be connected by welding to complete the fixed connection between the first steel pipe 21 and the second steel pipe 22 .

[0066] Optionally, the step of fixing the fixed flange to the connection end of the first steel pipe 21 further includes:

[0067] S1: The center of the fixed flange is arranged close to the center of the first steel pipe 21 .

[0068] The advantages of the movable flange installation method of this embodiment over the prior art are the same as those of the aforementioned movable flange, and will not be further described herein. Although the present invention is disclosed above, the scope of protection of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and such changes and modifications shall fall within the scope of protection of the present invention.

Claims

1. A movable flange, characterized in that: include: The disc body (10) has a first disc surface (11) and a second disc surface (12) arranged opposite to each other, wherein the first disc surface (11) is used to connect with the disc surface of the fixed flange, and a connecting hole (13) is provided in the middle of the disc body (10) and penetrates along its own axial direction, and the disc body (10) is sleeved on the outer periphery of the steel pipe (20) through the connecting hole (13); A plurality of fixing assemblies (30) are arranged at intervals along the circumference of the disc body (10) on the second disc surface (12), each of the fixing assemblies (30) comprising a connecting member (31) and a fixing member (32), the connecting member (31) being connected to the second disc surface (12), the fixing member (32) being provided on the connecting member (31) and being capable of moving relative to the connecting member (31) along the radial direction of the disc body (10), and the end of the fixing member (32) close to the middle of the disc body (10) being used to contact the outer peripheral wall of the steel pipe (20) so as to clamp and fix the steel pipe (20).

2. The movable flange according to claim 1, characterized in that: The connecting member (31) comprises: a first connecting block (311), one side of the first connecting block (311) being connected to the second disk surface (12); a first connecting tube (312) disposed on the other side of the first connecting block (311), the first connecting tube (312) having a through hole (313) radially disposed along the disk body (10), and at least a portion of the fixing member (32) being movably disposed in the through hole (313); Wherein, the first connecting block (311) and the first connecting tube (312) are an integrally formed structure.

3. The movable flange according to claim 2, characterized in that: An internal thread is provided on the hole wall of the through hole (313), an external thread matching the internal thread is provided on the outer peripheral wall of the fixing member (32), and the fixing member (32) is threadedly connected to the through hole (313).

4. The movable flange according to claim 2, characterized in that: The through hole (313) extends along the edge of the disk body (10) toward the center of the disk body (10).

5. The movable flange according to any one of claims 1 to 4, characterized in that: The movable flange has four fixing components (30), and the four fixing components (30) are evenly arranged along the circumference of the disk body (10).

6. The movable flange according to any one of claims 1 to 4, characterized in that: The disc body (10) is further provided with a plurality of mounting holes (14) extending through the disc body (10) in the axial direction. The plurality of mounting holes (14) are arranged at intervals along the circumference of the disc body (10). Fasteners pass through the mounting holes (14) to fix the disc body (10) to the fixed flange or the other movable flange.

7. The movable flange according to claim 6, characterized in that: The disc body (10) is provided with four mounting holes (14), and the four mounting holes (14) are evenly arranged along the circumference of the disc body (10).

8. The movable flange according to claim 7, characterized in that: One mounting hole (14) is provided between every two adjacent fixing assemblies (30).

9. A method for connecting steel pipes, suitable for connection using the movable flange according to any one of claims 1 to 8, characterized in that: A first steel tube (21) and a second steel tube (22) are provided, wherein a connecting end surface of at least one of the first steel tube (21) and the second steel tube (22) is not perpendicular to the axis thereof; Fixing a fixed flange on the connection end of the first steel pipe (21), and sleeve-mounting a movable flange on the connection end of the second steel pipe (22); Matching and docking the connection end of the first steel pipe (21) with the connection end of the second steel pipe (22); Adjusting the position of the movable flange so that the first disk surface (11) of the movable flange contacts the disk surface of the fixed flange; Fixing the fixed flange and the movable flange by using fasteners; Adjusting the fixing member (32) of the movable flange so that one end of the fixing member (32) contacts and fixes the outer peripheral wall of the second steel pipe (22), thereby fixing the movable flange on the second steel pipe (22); Removing the fasteners and transporting the first steel pipe (21) and the second steel pipe (22) to designated locations respectively; The fixed flange and the movable flange on the first steel pipe (21) and the second steel pipe (22) transported to the designated location are fixed by the fasteners so that the connecting end of the first steel pipe (21) and the connecting end of the second steel pipe (22) are butted against each other.

10. The method for installing a movable flange according to claim 9, wherein: The step of fixing the fixed flange to the connection end of the first steel pipe (21) further comprises: The center of the fixed flange is arranged close to the center of the first steel pipe (21).

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