CN212025254U

CN212025254U - Bending correction tool for hydraulic decoking drill rod

Info

Publication number: CN212025254U
Application number: CN201922449200.6U
Authority: CN
Inventors: 郭桐地; 孙玮晨; 林鹏; 吴凤胜
Original assignee: China Construction Industrial and Energy Engineering Group Co Ltd
Current assignee: China Construction Industrial and Energy Engineering Group Co Ltd
Priority date: 2019-01-23
Filing date: 2019-12-27
Publication date: 2020-11-27
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a crooked correction instrument of water conservancy decoking drilling rod draws together two-sided armful of clamps, a stand and jack, and the stand is embraced to the one end of two-sided armful of clamp, and the drilling rod is embraced to the other end, and two-sided armful of rod is connected at the both ends of stand, and the jack is located between two-sided armful of clamps, and the both ends of jack push up respectively on stand and drilling rod. The stand is welded with a bracket, and one end of the jack is propped against the bracket of the stand. The inside diameter of the clamp is larger than the diameter of the drill rod. The utility model discloses a crooked appurtenance of water conservancy decoking drilling rod is applicable to just to the effect after the drilling rod integral weld, and the availability factor is high, and is with low costs.

Description

Bending correction tool for hydraulic decoking drill rod

Technical Field

The utility model relates to a hydraulic decoking technical field.

Background

In the hydraulic decoking system, steel pipes of 35GrMo gauge phi 177.8 x 19 are used, each having a length of about 13m and threaded on both sides. Three steel pipes of the above specifications are connected by screw threads, and then a pipeline with the length of 38.6 meters is formed by using a special welding process, and the pipeline is used in a hydraulic decoking system and is called a drill rod. The high-pressure coke cutter is mainly used for conveying high-pressure water, the water pressure is usually 60MPa, the high-speed rotation is carried out in the high-temperature and high-pressure environment of a coke tower, and the high-pressure water is conveyed and sprayed to cut solid coke.

After the drill rod is welded and formed, the straightness is required to be less than or equal to 1 mm/m and less than or equal to 10 mm/full length. Because the requirement of deviation is hardly satisfied to the stress among the precision deviation of material itself and the welding process, according to traditional construction process, can imitate under the segmentation condition just, then can't imitate just after the shaping, in case the deviation appears, rocks when preventing the drilling rod rotation, can adopt the drilling rod irrotational, at the terminal installation water motor of drilling rod, the water motor is rotatory, sprays the high pressure water to around.

The current state of the technical scheme adopted in the prior art is as follows:

1. the segmentation positive method comprises the following steps: the drill rod is fixed on the ground and is gradually corrected.

The advantages are that: the operation is simple and easy.

The disadvantages are as follows: after the segmentation effect is positive, after a single wire reaches the standard, the straightness after the integral installation cannot be predicted.

2. Using water motor when drill rod linearity is not enough

The advantages are that: the method does not need to correct the drill rod, and is simple and easy to implement;

the disadvantages are as follows: the water motor has high manufacturing cost and low decoking efficiency, and needs to be replaced every three months, thus increasing huge use cost;

disclosure of Invention

The utility model provides a technical problem provide a crooked appurtenance of water conservancy decoking drilling rod that still can nimble adjustment drilling rod straightness accuracy after drilling rod weld forming.

The utility model discloses a technical scheme be, crooked correction instrument of water conservancy decoking drilling rod, including two-sided armful clamps, a stand and jack, the one end of two-sided armful clamp is the pipe strap, and the other end is the pipe strap, and the pipe strap encircles the stand, and the pipe strap encircles the drilling rod, and pipe strap pass through the connecting piece and link to each other, and two-sided armful clamps are installed at the both ends of stand, and the jack is located between two-sided armful clamps, and the both ends of jack push up respectively on stand and drilling rod, still include crooked measurement mould, and the mould is two semicircle tubes, and the internal diameter and the stand external diameter of drum.

The stand column is welded with a bracket, and one end of the jack is propped against the bracket of the stand column.

The inner diameter of the pipe clamp is larger than the diameter of the drill pipe.

The beneficial effects of the utility model are that, just to the effect after the drilling rod integral weld accomplishes, the availability factor is high, and is with low costs.

Drawings

FIG. 1 is a drawing for correcting the bending state of a drill rod.

Fig. 2 is a schematic top view of the structure of fig. 1.

FIG. 3 is a schematic view of the drill pipe after it has been straightened.

Fig. 4 is a schematic view of the use of the mold.

Labeled as: 1-drill rod, 2-upright post, 3-double-sided clamp, 31-pipe clamp, 32-connecting rod, 33-sleeve, 4-jack, 5-bracket and 6-mould.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The connecting part between the two sections of drill rods is internally provided with a threaded opening, the outer layer is a 35GrMo steel pipe with the thickness of 19mm, a special process is needed for welding and forming, and the welded opening is easy to deform after welding and forming. When correcting the drilling rod, use the utility model discloses a crooked appurtenance of water conservancy decoking drilling rod links to each other with drilling rod 1, as shown in figure 1, figure 3, including two-sided armful of card 3 wherein, a stand 2 and jack 4, the one end of each two-sided armful of card 3 is pipe strap 31, pipe strap 31 embraces stand 2, the other end is pipe box 33, pipe strap 33 embraces drilling rod 1, two-sided armful of card 3 is connected at the upper and lower both ends of stand 2, jack 4 is located between two-sided armful of card 3, jack 4's both ends push up respectively on stand 2 and drilling rod 1. The pipe clamp 31 and the sleeve 33 are connected through a connecting rod 32 and are fixed by welding. The length of the pipe clamp 31 can be increased, so that the supporting length of the pipe clamp 31 to the upright post 2 is longer, the stability of the whole structure is improved, and when the jack 4 pushes the deformed part, the upper part and the lower part of the jack are not easy to slide or deform.

The correction effect of the drill rod is measured by using a mold, the mold is two semi-cylindrical objects, the length of the mold is 500mm, the inner diameter of the mold is the same as the outer diameter of the drill rod, when the two half molds are buckled on the drill rod, the mold is rotated, and the deformation position and the deformation amount are determined by measuring the gap of the outer side support leg, as shown in fig. 4.

Because the deformation of the drill rod of the hydraulic decoking system is very small, the drill rod moves up and down without rotating, and the swinging condition can not be generated. Under the condition that the drill rod rotates and moves up and down, the phenomenon of swinging can be generated at the deformation position, and the position is marked.

And a mould 6 matched with the outer diameter of the drill rod is used for sleeving the drill rod 1 at a deformation position so as to clearly define the deformation angle and the deformation amount, as shown in figure 4.

After the deformation position and the deformation amount are determined, when the drill rod 1 is baked, the baking position is controlled to be around the deformation position, due to the effect of expansion with heat and contraction with cold, the deformation can be relieved to a certain extent after baking and cooling, and the deformation amount is measured again by using the die 6. If the drill rod is still obviously deformed, the deformed position is baked again, the jack 4 is started, force is applied at the deformed point, the bent and deformed position is corrected, and the unbaked position cannot be deformed in the process of deforming the baked position due to the fact that the drill rod is large in wall thickness and strong in rigidity in the process of applying external force. And simultaneously baking the two sides of the steel wire by using a baking gun until the straightness reaches the measurement standard.

And after the force application of the jack 4 is finished, re-testing the whole force application influence position by using the die, and after the re-testing is finished, ensuring that the deformation points of the drill rod are all adjusted. And the drill rod moves up and down under the rotating state again, and the swinging condition of the drill rod is observed. If there is any oscillation, the above method is used again to correct the oscillation.

The stand column 2 is welded with a bracket 5, and one end of a jack 4 is propped against the bracket 5 of the stand column 2. The upright post 2 is also cylindrical, and the cylindrical upright post 2 is convenient to be matched with the clamp. One end of the jack is propped against the upright post 2, and if the contact area is small, the structural stability is low under the condition that the jack applies force, and the jack is easy to slip. A bracket 5 is added between the jack 4 and the upright post 2, the contact area between the bracket 5 and the jack 4 as well as the upright post 2 is large, and the shapes of the contact surfaces are respectively matched. The stressed areas of the upright post 2 and the jack 4 are enlarged, the stress on the contact surface is more uniform, and the structure is more stable. The jack 4 is connected between the upright column 2 and the drill rod 1 more firmly, and the jack 4 is not easy to slide when pushing the drill rod 1.

The inner diameter of the double-sided clamp 3 is larger than the diameter of the drill rod, and the size of the double-sided clamp 3 is required to meet the requirement that the drill rod 1 can freely move up and down. The drilling rod after the welding is accomplished may have many places to be corrected, and two-sided armful card 3 can need not dismantle, directly move to next wait to rectify the position can, the efficiency of construction is high.

Claims

1. Crooked correction instrument of water conservancy decoking drilling rod, its characterized in that: including two-sided armful card (3), a stand (2) and jack (4), the one end of two-sided armful card (3) is pipe strap (31), the other end is pipe box (33), stand (2) are embraced in pipe strap (31), pipe strap (33) are embraced drilling rod (1), pipe strap (31) and pipe strap (33) link to each other through connecting piece (32), the both ends in stand (2) are installed in two-sided armful card (3), jack (4) are located between two-sided armful card (3), the both ends of jack (4) are pushed up respectively on stand (2) and drilling rod (1), still include crooked measurement mould (6), mould (6) are two semicircles, the internal diameter of drum is unanimous with stand (2) external diameter.

2. The hydraulic decoking drill pipe bend correction tool of claim 1, wherein: the welding has bracket (5) on stand (2), and the one end top of jack is on bracket (5) of stand (2).

3. The hydraulic decoking drill pipe bend correction tool of claim 1, wherein: the inner diameter of the pipe clamp (31) is larger than the diameter of the drill rod.