A portable device for correcting the aperture of a pipe

Abstract

The utility model discloses a portable pipe hole diameter correction's device, including draw -in rod device, locking device, radial expansion centering device, split type arc support device, draw -in rod device outside is installed locking device, radial expansion centering device, split type arc support device in proper order, split type arc support device wraps expansion centering device, and radial expansion centering device is driven split type arc support device expansion for pipe hole diameter correction through the rotation extrusion of locking device. The portable pipe hole diameter correction's device of the utility model has realized the correction to pipe hole diameter, has improved pipe hole diameter correction's efficiency greatly, has reduced the time of manual correction, has reduced the labor intensity of worker, has reduced the manual cost, has also reduced the security risk simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of boiler and pressure vessel technology, and in particular to a convenient device for correcting pipe diameter. Background Technology

[0002] During boiler manufacturing, installation, and long-term maintenance, the end-hole diameter calibration of boiler heating surface tube bundles (such as water-cooled walls, superheaters, reheaters, and economizers) is a frequent and critical technical step. Boiler tubes are typically made of high-strength alloy steel. After experiencing high-temperature and high-pressure operation, thermal expansion and contraction cycles, potential localized overheating, or mechanical stress, the tube ends are highly susceptible to deformation, manifesting as out-of-roundness (out-of-roundness) or localized depressions / bulges. Furthermore, similar deformations often occur at the tube ends due to external forces during manufacturing, transportation, and on-site welding (such as membrane wall welding). To ensure the correct tube diameter, manual calibration is performed at the tube ends, requiring a high level of skill from the operators and involving significant physical exertion. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model designs a convenient device for pipe diameter correction.

[0004] The present invention adopts the following technical solution:

[0005] A convenient pipe diameter correction device includes a pull rod device, a locking device, a radial expansion centering device, and a split arc-shaped support device. The locking device, the radial expansion centering device, and the split arc-shaped support device are sequentially installed outside the pull rod device. The split arc-shaped support device encloses the expansion centering device. The radial expansion centering device drives the split arc-shaped support device to expand through the rotation and compression of the locking device for pipe diameter correction.

[0006] Preferably, a buffer pressure-bearing device is also included, which is placed between the locking device and the radial expansion centering device on the tie rod device.

[0007] Preferably, the locking device is a hexagonal nut, used to prevent the preload of the tie rod from failing.

[0008] Preferably, the head end of the pull rod device is provided with a 50mm thread, which is threadedly connected to the locking device. The pipe diameter is corrected by rotating the locking device.

[0009] Preferably, the head of the pull rod device is provided with a 10mm long square block. This block is used to fix the pull rod device and prevent it from being driven when the locking device is rotated.

[0010] Preferably, the tail end of the tie rod device has a 20-degree bevel for use with the split-type arc-shaped support device.

[0011] Preferably, the buffer pressure-bearing device is a washer with a thickness of 10 mm. It is used to absorb impact loads and distribute pressure evenly.

[0012] Preferably, the radial expansion centering device is a casing, with the head of the casing fitting into the split-type arc-shaped support device and the tail bevel at 20 degrees for use with the split-type arc-shaped support device.

[0013] Preferably, the split arc-shaped support device consists of three tiles, which can fit into the radial expansion centering device and the tail end of the tie rod device.

[0014] The beneficial effects of this utility model are: This utility model designs a convenient pipe diameter correction device, which realizes the correction of pipe diameter, greatly improves the efficiency of pipe diameter correction, reduces the time of manual correction, reduces the labor intensity of workers, reduces labor costs, and also reduces safety risks. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of a tie rod device in this utility model;

[0017] Figure 3 This is a schematic diagram of a split-type arc-shaped support device in this utility model;

[0018] In the diagram: 1. Tie rod device, 2. Locking device, 3. Buffer pressure bearing device, 4. Radial expansion centering device, 5. Split-type arc support device. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0020] Example: Figure 1 As shown, a convenient pipe diameter correction device includes a tie rod device 1, a locking device 2, a buffer pressure-bearing device 3, a radial expansion centering device 4, and a split-type arc-shaped support device 5. The locking device is a hexagonal nut, used to provide force to the radial expansion centering device. The buffer pressure-bearing device is a 10mm thick washer, used to absorb impact loads and evenly distribute pressure. The radial expansion centering device is a sleeve; the head of the sleeve fits into the split-type arc-shaped support device, and the tail has a 20-degree bevel, used to expand the split-type arc-shaped support device.

[0021] like Figure 2As shown, the tie rod device consists of a single tie rod, which connects the locking device 2, the buffer pressure-bearing device 3, the radial expansion centering device 4, and the split-type arc-shaped support device 5. It also works with the radial expansion centering device to expand the split-type arc-shaped support device. The head of the tie rod device has a 50mm thread for threaded connection with the locking device. A 10mm block is located at the head of the tie rod device to secure it and prevent it from being pulled when the locking device is rotated. The tail of the tie rod device has a 20-degree bevel for engagement with the split-type arc-shaped support device.

[0022] like Figure 3 As shown, the split-type arc-shaped support device consists of 3 tiles, which are used to enlarge the pipe aperture, thereby correcting the pipe aperture.

[0023] Instructions for using this portable pipe diameter correction device: This device allows for manual correction of pipe diameters. First, place the sleeve in the pull rod, then place the washer in the pull rod and position it in front of the sleeve, ensuring the washer is flush against the sleeve. Next, screw the hexagonal nut into the pull rod, ensuring the washer is also flush against the nut. Then, place three tiles between the sleeve and the pull rod, ensuring the slopes of the sleeve and pull rod align with the slopes of the tiles. Place the device inside the pipe to be corrected. When correcting the diameter, use a wrench to rotate the nut. The nut exerts force on the sleeve, causing it to shift, which in turn causes the tiles to shift outward, expanding the pipe diameter. While rotating the nut, use an adjustable wrench to hold the small square block in front of the pull rod in place to prevent the pull rod from rotating with the nut. After correction, unscrew the nut and remove the pipe diameter correction device to complete the entire pipe correction process.

[0024] This invention designs a convenient pipe aperture correction device, which realizes the correction of pipe aperture, greatly improves the efficiency of pipe correction, reduces the time of manual correction, reduces the labor intensity of workers, reduces labor costs, and also reduces safety risks.

[0025] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A convenient device for pipe aperture correction, characterized in that, It includes a tie rod device, a locking device, a radial expansion centering device, and a split arc-shaped support device. The locking device, radial expansion centering device, and split arc-shaped support device are installed in sequence outside the tie rod device. The split arc-shaped support device wraps around the expansion centering device. The radial expansion centering device drives the split arc-shaped support device to expand through the rotation and compression of the locking device for pipe diameter correction.

2. A portable device for correcting the bore of a pipe according to claim 1, characterized in that, It also includes a buffer pressure-bearing device, which is placed between the locking device and the radial expansion centering device on the tie rod device.

3. A portable device for correcting the bore of a pipe according to claim 1, characterized in that, The locking device is a hexagonal nut.

4. A portable device for correcting the bore of a pipe according to claim 1, characterized in that, The pull rod device has a 50mm thread at its head end, which is threaded to the locking device.

5. A portable device for correcting the bore of a pipe according to claim 1, characterized in that, The head of the pull rod device is provided with a 10mm long square block.

6. A portable device for correcting the bore of a pipe according to claim 1, characterized in that, The tail of the tie rod device has a 20-degree bevel, which is used to cooperate with the split arc-shaped support device.

7. A portable device for correcting the bore of a pipe according to claim 2, characterized in that, The buffer pressure-bearing device is a washer with a thickness of 10mm.

8. A portable device for correcting the bore of a pipe according to claim 1, characterized in that, The radial expansion centering device is a casing. The head of the casing fits into the split arc-shaped support device, and the tail bevel is at a 20-degree angle for use with the split arc-shaped support device.

9. A portable device for correcting the bore of a pipe according to claim 1, characterized in that, The split-type arc-shaped support device consists of 3 tiles, which can fit into the radial expansion centering device and the tail end of the tie rod device.

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