Detachable pipeline flange assembling tool
By using a detachable pipe flange assembly tool, leveling components and supports are used to ensure that the perpendicularity deviation between the flange and the pipe meets the requirements during welding. This solves the problem of water leakage caused by excessive gaps in the connection of air conditioning water pipe flanges, improves the tightness of the connection and reduces labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中建五局安装工程有限公司
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-19
AI Technical Summary
The flange connection of hot-dip galvanized seamless steel pipes for air conditioning water pipes is easily affected by human factors during on-site assembly, which may cause the flange and pipe end face to tilt, resulting in excessive gaps and potential water leakage.
A detachable pipe flange assembly tool is used, including a leveling component and a support. The support is clamped to the outer circumference of the pipe by the leveling component to ensure that the perpendicularity deviation between the flange and the center of the pipe meets the welding requirements. Bolts and nuts are used to fix the flange and the cross plate to achieve flush welding between the flange and the end face of the pipe.
It effectively reduces rework and subsequent maintenance rates, lowers labor costs, solves the risk of leakage caused by excessive gaps, and improves the tightness of flange connections.
Smart Images

Figure CN224254557U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flange installation technology, specifically to a detachable pipe flange assembly tool. Background Technology
[0002] The air conditioning water pipes use hot-dip galvanized seamless steel pipes with flange connections. Unlike traditional seamless steel pipe welding, hot-dip galvanized seamless steel pipes cannot be directly welded on-site, as this would damage the galvanized layer and affect later operation and service life. Therefore, using hot-dip galvanized seamless steel pipe flange connections can significantly improve system lifespan and reduce pollution. However, this design requires significant construction difficulty, necessitating the purchase of seamless steel pipes and flanges for on-site assembly and welding, followed by factory galvanizing and secondary installation. Furthermore, the assembly of seamless steel pipes and flanges is susceptible to human error. If the plumber's assembly technique is poor, the flange and pipe ends may be misaligned, resulting in excessive gaps and loose pipe connections, potentially leading to leaks during later operation of the air conditioning water pipes. Utility Model Content
[0003] The purpose of this utility model is to provide a detachable pipe flange assembly tool to solve the technical problem of excessive gaps leading to water leakage during air conditioning pipe flange connections in the prior art. The specific technical solution is as follows:
[0004] This utility model provides a detachable pipe flange assembly tool, including a leveling component and at least two support members. The leveling component is used to clamp onto the outer periphery of the pipe. The support member has a first side for attaching to the outer periphery of the pipe and a second side for placing the flange. The first side is perpendicular to the second side. The support member has an opening for the leveling component to pass through, and the width of the opening is adapted to the width of the leveling component.
[0005] A further improvement of the detachable pipe flange assembly tool of this utility model is that the support includes a horizontal plate and a vertical plate, the horizontal plate is perpendicular to the vertical plate, the outer side of the vertical plate is the first side, and the top surface of the horizontal plate is the second side.
[0006] A further improvement of this utility model's detachable pipe flange assembly tool is that the support also includes bolts for connecting the flange, and the cross plate has a waist-shaped hole for the bolts to pass through.
[0007] A further improvement of this utility model of a detachable pipe flange assembly tool is that a diagonal brace is fixed between the horizontal plate and the vertical plate, and the opening is provided on the diagonal brace.
[0008] A further improvement of the detachable pipe flange assembly tool of this utility model is that the leveling assembly includes an open ring body and a connector, the connector being installed at the end of the open ring body.
[0009] A further improvement of this utility model's detachable pipe flange assembly tool is that the material of the open ring body is nylon tape.
[0010] The application of the technical solution of this utility model has the following beneficial effects:
[0011] This utility model relates to a detachable pipe flange assembly tool. A leveling assembly secures at least two support members to the outer circumference of the pipe to be installed, ensuring the first side of each support member is flush with the pipe's outer circumference. The tool levels the two support members, bringing them to the same horizontal plane. The flange is then placed on the second side of the two support members, and finally welded to the pipe's end face. The leveling assembly and support members ensure the flange is flush with the pipe's end face during welding, controlling the perpendicularity deviation between the flange and the pipe center to meet welding requirements. This significantly reduces rework and subsequent maintenance, lowers labor costs, and solves the technical problem of excessive gaps leading to leaks in existing air conditioning pipe flange connections.
[0012] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description
[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0014] Figure 1 This is a schematic diagram of the detachable pipe flange assembly tool of this utility model installed on a pipe;
[0015] Figure 2 This is a side view of the support component for the tool of the detachable pipe flange assembly of this utility model;
[0016] Figure 3 This is a perspective view of the detachable pipe flange assembly tool of this utility model during flange welding;
[0017] Figure 4 This is a top view of the detachable pipe flange assembly tool of this utility model during flange welding.
[0018] Among them, 1. Pipe; 2. Leveling component; 3. Support component; 301. Horizontal plate; 302. Vertical plate; 303. Diagonal brace plate; 304. Waist-shaped hole; 305. Opening; 306. Bolt; 307. Nut; 4. Flange. Detailed Implementation
[0019] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0020] See Figures 1-4 As shown, a detachable pipe flange assembly tool includes a leveling assembly 2 and at least two support members 3. The leveling assembly 2 is used to clamp onto the outer periphery of a pipe 1. The support member 3 has a first side for attaching to the outer periphery of the pipe 1 and a second side for placing a flange 4. The first side is perpendicular to the second side. The support member 3 has an opening 305 through which the leveling assembly 2 passes, and the width of the opening 305 is adapted to the width of the leveling assembly 2.
[0021] When the first side is attached to the outer periphery of pipe 1, the second side is naturally perpendicular to the axis of pipe 1. Then, flange 4 is fitted onto pipe 1 and tightly against the second side, ensuring that flange 4 is perpendicular to the axis of pipe 1, while the perpendicularity deviation between flange 4 and the center of pipe 1 meets the requirements. In this embodiment, three support members 3 are used in combination, arranged diagonally at the opening of pipe 1. Each support member 3 is tightly against flange 4 and pipe 1 to further improve vertical accuracy. This invention, through precise positioning on pipe 1, ensures that flange 4 is positioned on the same plane, avoiding the influence of human factors that could cause flange 4 to shift during assembly, thereby reducing errors and increasing the assembly efficiency of flange 4.
[0022] Preferably, the support member 3 includes a horizontal plate 301 and a vertical plate 302. The horizontal plate 301 is perpendicular to the vertical plate 302. The outer surface of the vertical plate 302 is the first side surface, and the top surface of the horizontal plate 301 is the second side surface. The horizontal plate 301 and the vertical plate 302 are fixed to form a right-angle structure, so that when the vertical plate 302 is attached to the outer periphery of the pipe 1, the flange 4 can be directly attached to the horizontal plate 301 to support the flange 4 for welding.
[0023] Preferably, the support member 3 further includes bolts 306 for connecting the flange 4, and the horizontal plate 301 has a slotted hole 304 through which the bolts 306 pass. Further, when the flange 4 is placed on the horizontal plate 301, after the bolts 306 pass through the slotted hole and the hole on the flange 4, the flange 4 is tightened to the horizontal plate 301 by nuts 307, thereby preventing the flange 4 from moving during welding. For flanges 4 of different sizes, the flange hole size and the distance between the flange hole and the inner diameter of the flange 4 vary slightly. The slotted hole 304 allows for adaptive position adjustment of the bolts 306, enabling the support member 3 to be compatible with flanges 4 of multiple sizes.
[0024] Preferably, a diagonal brace 303 is fixed between the horizontal plate 301 and the vertical plate 302, and the opening 305 is provided on the diagonal brace 303. The diagonal brace 303 can ensure that the angle between the horizontal plate 301 and the vertical plate 302 will not deform during use.
[0025] Preferably, the leveling assembly 2 includes an open ring body and a connector, the connector being mounted at one end of the open ring body. The connector allows the two ends of the open ring body to be connected, thereby enabling the support member 3 to be detachably installed.
[0026] Preferably, the material of the open ring is nylon tape. The connector can be a buckle or a ring. If it is a buckle, the two ends of the nylon tape can be directly fastened together; if it is a ring, the nylon tape at the end passes through the ring and is tightened, so that the nylon tape is wrapped around the outer circumference of the pipe 1.
[0027] During use, thread a nylon strap through the openings 305 of all support members 3, wrap it around the pipe 1, tighten and clamp it, so that the vertical plates 302 of all support members 3 are as close as possible to the outer periphery of the pipe 1 to reduce the spacing error between the oblong holes 304 and the flange holes; adjust the elevation accuracy of all support members 3 to ensure that the elevation of each support member 3 is on the same horizontal plane, and ensure that the distance between the second side and the end face of the pipe 1 is equal to the thickness of the flange 4; fit the flange 4 into the pipe 1 and place it on the horizontal plate 301, and make the flange hole correspond to the oblong opening; thread the bolt 306 through the oblong hole 304 and the flange hole, and tighten it on the bolt 306 with the nut 307 to fix the horizontal plate 301 and the flange 4, so that the perpendicularity deviation between the flange 4 and the center of the pipe 1 meets the requirements; weld the flange 4 to the end face of the pipe 1 and fix it; remove the nut 307, bolt 306, nylon strap and support member 3 to complete the assembly of the flange 4 and the pipe 1.
[0028] This utility model relates to a detachable pipe flange assembly tool, which uses a leveling component 2 to assemble at least two support members 3. Figure 1 The diagram illustrates three support members (3) clamped around the outer periphery of the pipe 1 to be installed, so that the first side of the support member 3 is tightly against the outer periphery of the pipe 1. At least two support members 3 are leveled and their elevations are made to be on the same horizontal plane. Then, the flange 4 is placed on the second side of at least two support members 3, and then the flange 4 is welded to the end face of the pipe 1. With the assistance of the leveling component 2 and the support members 3, the flange 4 can be flush with the end face of the pipe 1 during welding, so as to control the perpendicularity deviation between the flange 4 and the center of the pipe 1 to meet the welding requirements, greatly reducing rework and subsequent maintenance rates, reducing labor costs, and solving the technical problem of excessive gaps leading to water leakage when connecting the flange 4 of the air conditioning pipe 1 in the prior art.
[0029] 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. A removable pipe flange matching tool, characterized in that, The leveling assembly (2) is used to be clamped on the outer periphery of the pipeline (1), and the support (3) is provided with a first side surface for being attached to the outer periphery of the pipeline (1), and is provided with a second side surface for placing the flange (4), and the first side surface is perpendicular to the second side surface; the support (3) is provided with an opening (305) for the leveling assembly (2) to pass through, and the width of the opening (305) is matched with the width of the leveling assembly (2).
2. The detachable pipe flange set tool according to claim 1, characterized in that, The support (3) comprises a horizontal plate (301) and a vertical plate (302), the horizontal plate (301) is perpendicular to the vertical plate (302), the outer side surface of the vertical plate (302) is the first side surface, and the top surface of the horizontal plate (301) is the second side surface.
3. The detachable pipe flange set tool according to claim 2, wherein The support (3) further comprises a bolt (306) for connecting the flange (4), and the horizontal plate (301) is provided with a waist-shaped hole (304) for the bolt (306) to pass through.
4. The detachable pipe flange mating tool according to claim 2, wherein The horizontal plate (301) and the vertical plate (302) are fixed with a diagonal bracing plate (303), and the opening (305) is provided with the diagonal bracing plate (303).
5. The detachable pipe flange mating tool according to claim 1, wherein, The leveling assembly (2) comprises an open ring body and a connecting piece, and the connecting piece is installed at the end of the open ring body.
6. The detachable pipe flange set tool according to claim 5, wherein The material of the open ring body is nylon belt.