Roundness adjusting device for steel pipe joint

Abstract

The utility model relates to a roundness adjusting device for a steel pipe joint. The roundness adjusting device of the steel pipe connector comprises a force bearing plate, a roundness adjusting bolt and an adjusting rod. The force bearing plate is an inverted-L-shaped structural plate, a vertical plate of the force bearing plate is vertically and detachably fixed to the circumferential face of the steel pipe connector, a horizontal plate of the force bearing plate faces one end of the welding connection face of the steel pipe connector, and the end face of the horizontal plate of the force bearing plate is located on the outer side of the welding connection face of the steel pipe connector. The roundness adjusting bolt vertically penetrates through the horizontal plate of the force bearing plate and is in threaded connection with the horizontal plate of the force bearing plate, and the top of the roundness adjusting bolt is connected with an adjusting rod used for rotating the roundness adjusting bolt. According to the method, the joint construction quality and the pipeline operation safety are ensured, the influence of pipe adjustment and cutting can be effectively reduced, the construction efficiency can be improved, and the engineering cost is reduced.

Description

Technical Field

[0001] This application relates to the field of water pipeline construction technology for water conservancy projects, and in particular to a roundness adjustment device for a steel pipe joint. Background Technology

[0002] Pressure steel pipes are characterized by strong corrosion resistance, high pressure bearing capacity, and stable weld joint quality. With the increasing number of water conservancy projects in my country, especially long-distance water transfer projects and large-scale irrigation projects, pressure steel pipes are widely used. For steel pipes with diameters ranging from 900mm to 1400mm, the wall thickness is generally 10-12mm when bearing a pressure of 0.7-1.2MPa. Due to the relatively thin wall, uneven deformation of the pipe end roundness can occur between manufacturing and welding / installation. Therefore, thin-walled steel pipes typically require pipe joint adjustment before welding. The roundness of the joints of the installed and uninstalled pipes must be adjusted to within the allowable deviation range before spot welding and overall welding.

[0003] The process of adjusting pipe joints is inconvenient, and errors may occur after adjustment, making it difficult to guarantee the accuracy of the connection. It often requires repeated adjustments, which is time-consuming and labor-intensive, and greatly affects the construction efficiency.

[0004] To ensure the quality of joint construction and the safety of pipeline operation, it is particularly important to research and develop construction techniques for adjusting the roundness of pipeline joints on site. Utility Model Content

[0005] To address or partially address the problems existing in related technologies, this application provides a roundness adjustment device for steel pipe joints, which can effectively reduce the impact of pipe adjustment and cutting, improve construction efficiency, and reduce project costs.

[0006] This application provides a roundness adjustment device for a steel pipe joint, including a tension plate 1, a roundness adjustment bolt 2, and an adjustment rod 3. The tension plate 1 is a "┓" shaped structural plate. The vertical plate of the tension plate 1 is vertically and detachably fixed to the circumferential surface of the steel pipe joint. The horizontal plate of the tension plate 1 faces the welding connection surface of the steel pipe joint, and the end face of the horizontal plate of the tension plate 1 is outside the welding connection surface of the steel pipe joint. The roundness adjustment bolt 2 vertically penetrates the horizontal plate of the tension plate 1 and is threadedly connected to the horizontal plate of the tension plate 1. The top of the roundness adjustment bolt 2 is connected to an adjustment rod 3 for rotating the roundness adjustment bolt 2.

[0007] Optionally, in some embodiments, the steel pipe includes an installed pipe 41 and a pipe 42 to be installed. At least four tension plates 1 are installed on the circumferential surface of both the joint of the installed pipe 41 and the joint of the pipe 42 to be installed. Correspondingly, each of the four tension plates 1 is provided with a roundness adjustment bolt 2, and each of the roundness adjustment bolts 2 is equipped with an adjustment rod 3. The tension plates 1 are positioned within 200mm of the pipe joint.

[0008] Optionally, in some embodiments, the tension plate 1 is installed at the concave position of the steel pipe joint and at the corresponding position on the opposite side of the convex position of the steel pipe joint.

[0009] The technical solution provided in this application may include the following beneficial effects:

[0010] This application ensures the quality of joint construction and the safety of pipeline operation. It can not only effectively reduce the impact of pipe adjustment and cutting, but also improve construction efficiency and reduce project costs. All materials involved in this application can be reused. When there is a need to adjust the roundness of water pipelines on-site, the roundness adjustment process of steel pipes can be realized, ensuring the continuous feasibility of the construction process, greatly shortening the pipeline connection time and improving the installation quality.

[0011] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0012] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0013] Figure 1 This is a schematic diagram of the roundness adjustment device for a steel pipe joint shown in the embodiments of this application;

[0014] Figure 2 This is a schematic diagram of the installation structure of the roundness adjustment device for the steel pipe joint shown in the embodiments of this application;

[0015] Figure 3 This is a schematic diagram of the roundness adjustment device for steel pipe joints shown in the embodiments of this application.

[0016] Figure label:

[0017] 1-Stretch plate, 2-Roundness adjustment bolt, 3-Adjusting rod, 41-Installed pipe, 42-Pipe to be installed. Detailed Implementation

[0018] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0019] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] To address the aforementioned issues, this application provides a roundness adjustment device for steel pipe joints, which can effectively reduce the impact of pipe adjustment and cutting, improve construction efficiency, and reduce project costs.

[0023] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0024] See Figure 1-3The roundness adjustment device for the steel pipe joint includes a tension plate 1, a roundness adjustment bolt 2, and an adjustment rod 3. The tension plate 1 is a "┓" shaped structural plate. The vertical plate of the tension plate 1 is vertically and detachably fixed to the circumferential surface of the steel pipe joint. The horizontal plate of the tension plate 1 faces the welding connection surface of the steel pipe joint, and the end face of the horizontal plate of the tension plate 1 is outside the welding connection surface of the steel pipe joint. The roundness adjustment bolt 2 vertically penetrates the horizontal plate of the tension plate 1 and is threadedly connected to the horizontal plate of the tension plate 1. The top of the roundness adjustment bolt 2 is connected to an adjustment rod 3 for rotating the roundness adjustment bolt 2.

[0025] During operation, the load-bearing plate 1 is made of 10mm thick steel plate, cut into a "┓" shape, with a protrusion of 100mm × 50mm. The 100mm edge is symmetrically and oppositely connected to the steel pipe wall, and the 50mm edge is connected to the roundness adjustment bolt 2. The roundness adjustment bolt 2 is made of M24 bolt and nut. After the nut is welded to the middle of the 50mm edge of the load-bearing plate 1, the M24 bolt is inserted to tighten the steel pipe. Another nut is welded to the top of the bolt, through which the adjustment rod 3 can be inserted for adjusting the force. The adjustment rod 3 is made of ribbed steel bar. After the roundness adjustment bolt 2 is pre-tightened, rotating the adjustment rod 3 drives the roundness adjustment bolt 2 to rotate, and the roundness adjustment bolt 2 tightens the steel pipe to achieve roundness adjustment.

[0026] In some embodiments, the steel pipe includes an installed pipe 41 and a pipe 42 to be installed. At least four tension plates 1 are installed on the circumferential surface of both the installed pipe 41 joint and the pipe 42 joint to be installed. Correspondingly, each of the four tension plates 1 is provided with a roundness adjustment bolt 2, and each of the roundness adjustment bolts 2 is equipped with an adjustment rod 3. The tension plates 1 are positioned within 200mm of the pipe joint.

[0027] During operation, the tension plate 1 ensures that the pipe joint and the roundness adjustment bolt 2 can be stably and effectively matched. There are four tension plates 1 on the installed pipe 41 and four on the pipe to be installed 42, which are symmetrically arranged. The roundness adjustment device is installed in the four directions of the installed pipe (upper, lower, left, and right) and in the four directions of the pipe to be installed (upper left, upper right, lower left, and lower right), which are symmetrically distributed in pairs. The installation position is 50mm to 100mm away from the pipe opening.

[0028] In some embodiments, the tension plate 1 is installed at the concave position of the steel pipe joint and at the corresponding position on the opposite side of the convex position of the steel pipe joint.

[0029] During operation, the roundness adjusting bolt 2 is pre-tightened for connection, and the roundness deviation of the joint is observed. The roundness is adjusted by rotating the roundness adjusting bolt 2 with the adjusting rod 3 to apply pressure. The thread has a self-locking function to prevent reverse rotation after the pressure increases. In areas with concave roundness, the tension plate 1 is installed at the concave position, and the roundness adjusting bolt 2 is tightened to lift the joint. In areas with convex roundness, the tension plate 1 is installed on the opposite side of the convex position, and the roundness adjusting bolt 2 is tightened to press down the joint. As the roundness adjusting bolt 2 pushes out thread by thread, high-precision roundness adjustment can be achieved, gradually adjusting the entire joint to within the allowable installation deviation range to ensure the roundness of the installation.

[0030] The working process of this application:

[0031] During use, test-fit the pipe to be installed (42) with the already installed pipe (41) to observe the roundness of the joint. Then, manually install the roundness adjustment devices evenly on both sides of the pipe, symmetrically in pairs, with adjacent adjustment devices installed in opposite directions. After installation, manually pre-tighten the roundness adjustment bolts 2, pressing them against the pipe wall. Then, use the adjustment rod 3 to rotate the roundness adjustment bolts 2, applying a pushing force to the outside of the pipe wall. Tighten the bolts one by one by rotating the roundness adjustment bolts 2 and observe the joint connection. After the roundness adjustment is completed, perform a positioning spot weld on the outside of the pipe. After spot welding and fixing, reverse the adjustment rod 3, loosen the roundness adjustment bolts 2, and remove the adjustment device to continue installation at the next pipe joint. The adjustment and tightening process should be symmetrical, with continuous adjustment and observation. Adjust the position with the largest roundness deformation to within the allowable installation deviation range. The entire adjustment process takes about 0.6-1.1 hours. If the allowable deviation is exceeded, tighten and round the bottom roundness adjustment device. The remaining roundness adjustment devices play a positioning and limiting role in the current process.

[0032] After adjusting the bottom and top, make symmetrical adjustments in six positions: left-right, upper left-lower right, and lower left-upper right, until the roundness of the entire joint meets the requirements. Then, perform locating spot welding on the outside of the pipe, and then symmetrically loosen and remove the rounding device.

[0033] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0034] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0035] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A roundness adjusting device for a steel pipe joint, characterized by: The roundness adjusting device of the steel pipe joint comprises a leverage plate (1), a roundness adjusting bolt (2) and an adjusting rod (3); the leverage plate (1) is a "┓" type structure plate, the vertical plate of the leverage plate (1) is vertically and detachably fixed on the circumferential surface of the steel pipe joint, the horizontal plate of the leverage plate (1) faces one end of the welded connecting surface of the steel pipe joint, and the end surface of the horizontal plate of the leverage plate (1) is located outside the welded connecting surface of the steel pipe joint, the roundness adjusting bolt (2) vertically penetrates the horizontal plate of the leverage plate (1) and is threadedly connected with the horizontal plate of the leverage plate (1), and the top of the roundness adjusting bolt (2) is connected with the adjusting rod (3) for rotating the roundness adjusting bolt (2).

2. The roundness adjusting device for a steel pipe joint according to claim 1, characterized by: The steel pipe comprises an installed pipe (41) and a to-be-installed pipe (42), and at least four leverage plates (1) are installed on the circumferential surfaces of the joints of the installed pipe (41) and the to-be-installed pipe (42); correspondingly, the four leverage plates (1) are provided with roundness adjusting bolts (2), and the roundness adjusting bolts (2) are provided with adjusting rods (3); the positions of the leverage plates (1) are within the range of 200 mm of the pipe joints.

3. The roundness adjusting device for a steel pipe joint according to claim 1 or 2, characterized by: The leverage plate (1) is installed at the position of the concave roundness of the steel pipe joint, and the corresponding position on the opposite side of the convex roundness of the steel pipe joint.

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