阅读说明：本技术 一种修井作业机油管自动对中装置 (Automatic centering device for oil pipe of workover rig ) 是由 潘李林 王宏桥 李庆霞 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种修井作业机油管自动对中装置,涉及油田修井辅助器械技术领域。本发明包括限位底座和顶座；顶座周侧面固定连接有两对称设置的第一纠偏推杆；限位底座周侧面固定连接有两对称设置的第二纠偏推杆；两第一纠偏推杆和两第二纠偏推杆一端均固定连接有安装座；安装座内壁转动连接有纠偏轮。本发明通过对中组件、第一纠偏推杆和第二纠偏推杆的设计,一方面能够高效完成油管井口的对中和四点纠偏作业,另一方面通过调径推杆的设计,还能够快速调节该装置的夹持管径和对中管径,继而使该装置能够进行多规格油管的对中扶正作业。(The invention discloses an automatic centering device for an oil pipe of a workover rig, and relates to the technical field of oilfield workover auxiliary instruments. The invention comprises a limiting base and a top seat; two first deviation rectifying push rods which are symmetrically arranged are fixedly connected to the peripheral side surface of the top seat; two second deviation rectifying push rods which are symmetrically arranged are fixedly connected to the peripheral side surface of the limiting base; one ends of the two first deviation rectifying push rods and one ends of the two second deviation rectifying push rods are fixedly connected with mounting seats; the inner wall of the mounting seat is rotatably connected with a deviation rectifying wheel. According to the invention, through the design of the centering assembly, the first deviation rectifying push rod and the second deviation rectifying push rod, on one hand, the centering and four-point deviation rectifying operation of the oil pipe wellhead can be efficiently completed, and on the other hand, through the design of the diameter regulating push rod, the clamping pipe diameter and the centering pipe diameter of the device can be rapidly regulated, so that the device can perform the centering and centering operation of oil pipes with multiple specifications.)

1. The utility model provides a workover rig oil pipe automatic centering device, includes spacing base (1) and footstock (2), its characterized in that:

the peripheral side surface of the top seat (2) is fixedly connected with two first deviation rectifying push rods (3) which are symmetrically arranged; the peripheral side surface of the limiting base (1) is fixedly connected with two symmetrically arranged second deviation rectifying push rods (4); one ends of the two first deviation rectifying push rods (3) and one ends of the two second deviation rectifying push rods (4) are fixedly connected with a mounting seat (5); the inner wall of the mounting seat (5) is rotatably connected with a deviation rectifying wheel (6);

the top surface of the limiting base (1) is fixedly connected with a group of diameter-adjusting push rods (7) distributed in a circumferential array; the other ends of the diameter-adjusting push rods (7) are connected with the top seat (2); the top surface of the limiting base (1) is also fixedly connected with a group of guide rods (8) distributed in a circumferential array; the peripheral side surfaces of the guide rods (8) are connected with the top seat (2) in a sliding manner; a group of centering components (9) distributed in a circumferential array are hinged between the opposite surfaces of the limiting base (1) and the top seat (2);

the centering assembly (9) comprises two first elastic damping members (10);

the movable ends of the two first elastic damping pieces (10) are hinged with a connecting seat (11); the other ends of the two first elastic damping parts (10) are respectively hinged with the top seat (2) and the limiting base (1);

one surface of the connecting seat (11) is fixedly connected with a group of second elastic damping pieces (12) distributed in a linear array;

the surfaces of the second elastic damping parts (12) are fixedly connected with abutting seats (13); a group of abutting wheels (14) which are distributed in a linear array are rotatably connected between the inner surfaces of the abutting seats (13).

2. The automatic centering device for the oil pipe of the workover rig according to claim 1, wherein the surface of the limiting base (1) is provided with positioning holes (15) distributed in a circumferential array; and a connecting piece is movably arranged on the inner wall of the positioning hole (15).

3. The automatic centering device for the oil pipe of the workover rig according to claim 1, wherein the cross section of the abutting seat (13) is of a U-shaped structure; the axis of the first deviation rectifying push rod (3) is vertical to the axis of the second deviation rectifying push rod (4).

4. The automatic centering device for the oil pipe of the workover rig according to claim 1, wherein the cross section of the guide rod (8) is of a T-shaped structure.

5. The automatic centering device for the oil pipe of the workover rig according to claim 1, wherein the first elastic damping member (10) and the second elastic damping member (10) comprise damping telescopic pipes.

6. The automatic centering device for the oil pipe of the workover rig according to claim 5, wherein a damping spring is sleeved on the peripheral side surface of the damping telescopic pipe.

7. The automatic centering device for the oil pipe of the workover rig according to claim 1, wherein the periphery of the deviation rectifying wheel (6) and the abutting wheel (14) are wrapped by rubber pads.

8. The automatic centering device for the oil pipe of the workover rig according to claim 1, wherein the top seat (2) and the limiting base (1) are fixedly provided with through holes at the axial center.

Technical Field

The invention belongs to the technical field of oilfield workover auxiliary instruments, and particularly relates to an automatic centering device for an oil pipe of a workover rig.

Background

When the oil pipe is hoisted by the hoisting hook pulley falling to the ground, the oil pipe is horizontally laid on the ground, and a certain distance is reserved between the center of a wellhead. When the oil pipe is hoisted by the lifting hook, the lifting hook pulley is pushed to one side due to the weight of the oil pipe, when the oil pipe is completely hoisted, the lifting hook pulley and the oil pipe slide to the other side due to the dead weight of the lifting hook pulley and the oil pipe, so that the oil pipe and the lifting hook pulley swing back and forth, the hoisted oil pipe cannot be butted with the lower oil pipe, the workers on the ground cannot stably swing the oil pipe, and the workers need to manually bend over the derrick to support the oil pipe stably in order not to influence the operation progress. For another example, in the centering process of the derrick and the wellhead of the operation machine, 80% of the oil pipe is deviated, and when the lower end of the hung oil pipe is manually aligned with the lower oil pipe, the lifting hook does not have a centering effect on the oil pipe, or the deviation occurs, at this time, when the hydraulic tongs rotate at a high speed, the upper end of the oil pipe swings, and the oil pipe buckle is damaged, so that an oil pipe centering and centering device is urgently needed in the market, however, the existing centering device is poor in effect on one hand, and is not suitable for centering operation of multiple-specification pipe fittings on the other hand.

Disclosure of Invention

The invention aims to provide an automatic centering device for an oil pipe of a workover rig, which solves the problems that the existing automatic centering device for the oil pipe of the workover rig is poor in deviation rectifying effect and is not suitable for centering and centering of pipelines with multiple specifications through the design of a centering assembly and a diameter adjusting push rod.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an automatic centering device for an oil pipe of a workover rig, which comprises a limiting base and a top seat, wherein the limiting base is provided with a positioning hole; the side surface of the periphery of the top seat is fixedly connected with two first deviation rectifying push rods which are symmetrically arranged; the peripheral side surface of the limiting base is fixedly connected with two symmetrically arranged second deviation rectifying push rods; one ends of the two first deviation rectifying push rods and one ends of the two second deviation rectifying push rods are fixedly connected with mounting seats; the inner wall of the mounting seat is rotatably connected with a deviation rectifying wheel; the top surface of the limiting base is fixedly connected with a group of diameter-adjusting push rods distributed in a circumferential array; the other ends of the diameter-adjusting push rods are connected with the top seat; the top surface of the limiting base is also fixedly connected with a group of guide rods distributed in a circumferential array; the peripheral side surfaces of the guide rods are in sliding connection with the top seat; a group of centering assemblies distributed in a circumferential array are hinged between the opposite surfaces of the limiting base and the top seat; the centering assembly comprises two first elastic damping parts; the movable ends of the two first elastic damping parts are hinged with a connecting seat; the other ends of the two first elastic damping parts are respectively hinged with the top seat and the limiting base; one surface of the connecting seat is fixedly connected with a group of second elastic damping pieces distributed in a linear array; the surfaces of the second elastic damping parts are fixedly connected with abutting seats; a group of abutting wheels which are distributed in a linear array are rotatably connected between the inner surfaces of the abutting seats.

Furthermore, positioning holes distributed in a circumferential array are formed in the surface of the limiting base; and the inner wall of the positioning hole is movably provided with a connecting piece.

Furthermore, the cross section of the abutting seat is of a U-shaped structure; the axis of the first deviation rectifying push rod is perpendicular to the axis of the second deviation rectifying push rod.

Further, the cross section of the guide rod is of a T-shaped structure; the first elastic damping part and the human-obtaining elastic damping part comprise damping telescopic pipes; and damping springs are sleeved on the peripheral side surfaces of the damping telescopic pipes.

Furthermore, rubber pads are wrapped on the circumferential side surfaces of the deviation rectifying wheel and the abutting wheel; and the axes of the top seat and the limiting base are fixedly provided with through holes.

The invention has the following beneficial effects:

1. according to the invention, through the design of the centering assembly, the first deviation rectifying push rod and the second deviation rectifying push rod, on one hand, the centering and four-point deviation rectifying operation of the oil pipe wellhead can be efficiently completed, and on the other hand, through the design of the diameter regulating push rod, the clamping pipe diameter and the centering pipe diameter of the device can be rapidly regulated, so that the device can perform the centering and centering operation of oil pipes with multiple specifications.

2. Through the design of first elastic damping spare and second elastic damping spare, when centering operation, can effectively carry out the energy-absorbing to oil pipe's vibration, stability when then being favorable to guaranteeing oil pipe operation, and through the wheel formula design of rectifying the wheel and supporting tight wheel, can effectively reduce the frictional force of device and pipe fitting, then reduce the surface loss of pipe fitting.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of an automatic centering device for an oil pipe of a workover rig;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic top view of the structure of FIG. 1;

FIG. 4 is a schematic structural view of the centering assembly;

FIG. 5 is a schematic structural view of a first deviation rectifying push rod, a mounting seat and a deviation rectifying wheel;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a limiting base, 2-a top seat, 3-a first deviation rectifying push rod, 4-a second deviation rectifying push rod, 5-a mounting seat, 6-a deviation rectifying wheel, 7-a diameter adjusting push rod, 8-a guide rod, 9-a centering component, 10-a first elastic damping part, 11-a connecting seat, 12-a second elastic damping part, 13-a resisting seat, 14-a resisting wheel and 15-a positioning hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention is an automatic centering device for an oil pipe of a workover rig, which comprises a limit base 1 and a top seat 2; the side surface of the top seat 2 is fixedly connected with two first deviation rectifying push rods 3 which are symmetrically arranged; two symmetrically arranged second deviation rectifying push rods 4 are fixedly connected to the peripheral side surface of the limiting base 1; one ends of the two first deviation rectifying push rods 3 and one ends of the two second deviation rectifying push rods 4 are fixedly connected with a mounting seat 5; the inner wall of the mounting seat 5 is rotatably connected with a deviation rectifying wheel 6, the first deviation rectifying push rod 3 and the second deviation rectifying push rod 4 are both used for rectifying the deviation of the pipe fitting, and during operation, the deviation rectifying operation in four directions can be realized;

the top surface of the limiting base 1 is fixedly connected with a group of diameter-adjusting push rods 7 distributed in a circumferential array; the other ends of the diameter adjusting push rods 7 are connected with the top seat 2, the diameter adjusting push rods 7 are used for adjusting the relative distance between the limiting base 1 and the top seat 2, the centering and clamping radius formed by the six centering assemblies 9 can be synchronously adjusted through adjusting the distance, and the device can be suitable for centering operation of pipelines with various specifications through adjusting the centering and clamping radius;

the top surface of the limiting base 1 is also fixedly connected with a group of guide rods 8 distributed in a circumferential array; the peripheral side surfaces of the group of guide rods 8 are all connected with the top seat 2 in a sliding way; a group of centering components 9 distributed in a circumferential array are hinged between the opposite surfaces of the limiting base 1 and the top seat 2;

the centering assembly 9 comprises two first elastic damping members 10; the movable ends of the two first elastic damping parts 10 are hinged with a connecting seat 11; the other ends of the two first elastic damping parts 10 are respectively hinged with the top seat 2 and the limiting base 1; one surface of the connecting seat 11 is fixedly connected with a group of second elastic damping parts 12 distributed in a linear array; the surfaces of the second elastic damping parts 12 are fixedly connected with abutting seats 13; a group of abutting wheels 14 which are distributed in a linear array are rotatably connected between the inner surfaces of the abutting seats 13.

As shown in fig. 1, positioning holes 15 distributed in a circumferential array are formed on the surface of the limiting base 1; the connecting piece is movably mounted on the inner wall of the positioning hole 15, and during operation, the connecting piece is mounted in the positioning hole 15, and then the limiting base 1 is fixed on the oil pipe mounting platform.

As shown in fig. 3, the cross section of the abutting seat 13 is a U-shaped structure; the axis of the first deviation rectifying push rod 3 is perpendicular to the axis of the second deviation rectifying push rod 4, and four-point deviation rectification is facilitated through the arrangement design.

Wherein, the cross section of the guide rod 8 is of a T-shaped structure; the first elastic damping part 10 and the human-obtaining elastic damping part 10 comprise damping telescopic pipes; the side surface of the damping extension tube is sleeved with a damping spring.

Wherein, the peripheral side surfaces of the deviation correcting wheel 6 and the abutting wheel 14 are wrapped with rubber pads; the axle center positions of the top seat 2 and the limiting base 1 are fixedly provided with through holes.

One specific application of this embodiment is: before working, the positioning hole 15 is used for installing a connecting piece, the limiting base 1 is fixed on an oil pipe installation platform through the installation of the connecting piece, before working, the distance between the top seat 2 and the limit base 1 is adjusted by adjusting the diameter-adjusting push rod 7, by adjusting the distance, the centering and clamping radius formed by the six centering components 9 is synchronously adjusted, and then the centering and clamping radius is matched with the specification of the pipe fitting, the oil pipe sequentially penetrates through the through holes of the top seat 2 and the limiting base 1, the tight-resisting wheels 14 in the six centering components 9 are tightly attached to the outer wall of the pipe fitting, and through the wheel type design, the linear displacement of the oil pipe is not hindered, through the arrangement design of the first deviation rectifying push rod 3, the second deviation rectifying push rod 4 and the deviation rectifying wheel 6, when the device works, timely deviation rectifying operation in four directions of the oil pipe can be achieved, and continuous centering of the oil pipe is guaranteed.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.