Correcting device for flange opening alignment

Abstract

The utility model discloses a correcting device for flange opening alignment. The correcting device mainly comprises a jackscrew, a sliding supporting rod, a base, a positioning pin, a supporting rod fixing screw, an oil groove and a positioning pin support. Due to the influence of various factors such as welding, mounting, pipeline deformation and long pipeline span, two to-be-connected flange openings are often staggered and misaligned, such as axis deviation and angle deviation. A traditional flange alignment method generally depends on manual adjustment, efficiency is low, precision is difficult to guarantee, sometimes, even a large tool is needed for forced alignment, a flange sealing face is prone to being damaged, connection quality is affected, and certain potential safety hazards exist. Therefore, the correcting device which is simple in structure, convenient to operate and capable of accurately and efficiently aligning the flange openings is designed, the device can be used for a long time, the safety risk in the construction process is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of alignment and correction after flange disassembly and inspection, and specifically to a correction device for flange alignment. Background Technology

[0002] Flange connections are a common and important method of connection in industrial pipeline installation and equipment connection. However, due to various factors such as welding, installation, pipeline deformation, and long pipeline spans, misalignment or misalignment often occurs between the two flanges to be connected, such as axial offset or angular deviation. Traditional flange alignment methods usually rely on manual adjustment, which is inefficient and difficult to guarantee accuracy. Sometimes, it even requires the use of large tools to force alignment, which can easily damage the flange sealing surface, affect the connection quality, and pose certain safety hazards. Therefore, designing a simple, easy-to-operate, and accurate flange alignment correction device is of significant practical importance. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a correction device that is simple in structure, easy to operate, and can effectively improve the alignment accuracy and efficiency of flange openings, while ensuring the standardization of flange fastening during the correction process.

[0004] The purpose of this utility model is achieved as follows: a straightening device for flange alignment includes a set screw (1), a sliding support rod (2), a base (3), a positioning pin (4), a support rod fixing screw (5), an oil groove (6), and a positioning pin support (7). The set screw (1) is installed on one side of the sliding support rod (2), the sliding support rod (2) is installed inside the base (3), the support rod fixing screw (5) is installed at one end of the base (3), the oil groove (6) is inside the base (3), the positioning pin support (7) is welded to one end of the base (3), and the positioning pin (4) is installed on the positioning pin support (7). When in use, place a correction device for flange alignment on the outside of the offset flange, insert the positioning pin (4) into the flange bolt hole. The positioning pin (4) can be replaced according to the size of the flange bolt hole. Adjust the sliding support rod (2), adjust the set screw (1) to the outside of the edge of another flange that needs to be aligned, and after the two flanges are aligned, tighten the support rod fixing screw (5) to fix the sliding support rod (2), insert the bolt for tightening, and after tightening, remove the device and replenish the bolts in the remaining bolt holes.

[0005] Preferably, the base (3) has oil grooves (6) on the upper and lower parts.

[0006] Preferably, the sliding support rod (2) can slide relative to the base (3), and oil grooves (6) are provided on the upper and lower sides of the base (3) to prevent corrosion of the contact surface between the sliding support rod (2) and the base (3) and affect the relative sliding.

[0007] Preferably, in order to improve the support strength of the sliding support rod (2) and ensure that the strength of the offset flange is controlled during the recovery process, the contact surface of the sliding support rod (2) and the base (3) is designed to be arc-shaped, which improves the contact area and the torque bearing capacity, and can adjust larger flanges.

[0008] Preferably, the positioning pin (4) is used to fix a straightening device for flange alignment, so as to prevent the device from failing to be fixed when the set screw (1) is applied. Attached Figure Description

[0009] Appendix Figure 1 A schematic diagram of the structure of a straightening device for flange alignment according to the present invention is shown.

[0010] Appendix Figure 2 A schematic diagram of an oil tank is shown for a straightening device for flange alignment according to the present invention.

[0011] Appendix Figure 3 The diagram shows a plan view of the straightening device for flange alignment according to the present invention when straightening the flange.

[0012] Explanation of reference numerals in the attached diagram: 1. Top screw, 2. Sliding support rod, 3. Base, 4. Locating pin, 5. Support rod fixing screw, 6. Oil groove, 7. Locating pin support. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1 The present invention will be further described below.

[0014] This utility model discloses a flange alignment correction device, mainly comprising a set screw 1, a sliding support rod 2, a base 3, a positioning pin 4, a support rod fixing screw 5, an oil groove 6, and a positioning pin support 7. The set screw 1 is installed on one side of the sliding support rod 2, the sliding support rod 2 is installed inside the base 3, the support rod fixing screw 5 is installed at one end of the base 3, the oil groove 6 is inside the base 3, and there are oil grooves 6 on both the upper and lower sides of the interior of the base 3, the positioning pin support 7 is welded to one end of the base 3, and the positioning pin 4 is installed on the positioning pin support 7.

[0015] Working principle: During flange alignment, a flange alignment device is placed on the outside of the offset flange. A locating pin 4 is inserted into the flange bolt holes to secure the device. The locating pin 4 can be replaced according to the size of the flange bolt holes. The sliding support rod 2 is adjusted, and the set screw 1 is moved to the outside of the edge of the other flange to be aligned. After the two flanges are aligned, the support rod fixing screw 5 is tightened to secure the sliding support rod 2. Bolts are inserted into the flange to tighten it. After tightening, the device is removed, and bolts are added to the remaining bolt holes.

[0016] The beneficial effects of this invention are that the device has a simple structure, is easy to manufacture, is convenient to operate, and can accurately and efficiently align and correct flange openings. Using this device to align and correct flange openings can avoid damaging the flange, reduce operational risks, and improve work efficiency.

Claims

1. A straightening device for flange alignment, mainly comprising a set screw (1), a sliding support rod (2), a base (3), a positioning pin (4), a support rod fixing screw (5), an oil groove (6), and a positioning pin support (7), characterized in that, The set screw (1) is installed on one side of the sliding support rod (2), the sliding support rod (2) is installed inside the base (3), the support rod fixing screw (5) is installed at one end of the base (3), the oil groove (6) is inside the base (3), the positioning pin support (7) is welded to one end of the base (3), and the positioning pin (4) is installed on the positioning pin support (7).

2. The straightening device for flange alignment according to claim 1, characterized in that, The base (3) has oil grooves (6) on its upper and lower parts.

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