A device for grinding and repairing the sealing surface of a flange of an oil drilling and production equipment

Abstract

The utility model provides a kind of petroleum drilling and production equipment flange sealing surface grinding repair device, it is related to petroleum drilling and production equipment field.This flange sealing surface grinding repair device is mainly composed of inner support piece and rotating part;Inner support piece is detachably fixed on the inner wall of the flange of petroleum drilling and production equipment, for rotating support for rotating part;Rotating part has the frame body rotating around inner support piece, sand belt polisher for grinding flange sealing surface is arranged on the frame body.This flange sealing surface grinding repair device adopts sand belt polisher to repair flange, with the characteristics of small vibration, high linear velocity, good flatness, can significantly improve the surface finish and flatness of petroleum drilling and production equipment flange sealing surface.In addition, this flange sealing surface grinding repair device also has the characteristics of compact structure, convenient to carry and operate, strong practicality etc.

Description

Technical Field

[0001] This utility model is specifically a grinding and repair device for the flange sealing surface of oil drilling and production equipment, and relates to the field of oil drilling and production equipment technology. Background Technology

[0002] Oil drilling and production equipment has many flanges used to connect pipelines. After prolonged use, the sealing surfaces of these flanges can fail due to wear and corrosion, leading to leaks. The difficulty in repairing flange sealing surfaces lies in the fact that oil drilling and production equipment is located in the field, making it inconvenient to return it to the factory for repair. Therefore, portable repair devices must be used for on-site repairs.

[0003] Patent application number 202220109227.8 discloses a novel flange end face processing and repair device. This repair device repairs flanges by rotating a cutting tool. Its drawbacks are that it has a complex structure, is not easy to carry, and the flatness and surface finish of the flange sealing surface after repair are poor. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model discloses a grinding and repair device for the flange sealing surface of oil drilling and production equipment, which adopts the following technical solution:

[0005] A grinding and repair device for the flange sealing surface of an oil drilling and production equipment mainly consists of an inner support and a rotating component. The inner support is detachably fixed to the inner wall of the flange of the oil drilling and production equipment to provide rotational support for the rotating component. The rotating component has a frame that rotates around the inner support, and a belt polisher for grinding the flange sealing surface is installed on the frame.

[0006] Further improved technical solution: The inner support mainly consists of a disc body, a support shaft and multiple support rods, wherein the multiple support rods are arranged radially along the disc body, the support shaft is arranged axially along the disc body, and the frame can rotate around the support shaft.

[0007] Further improvement of the technical solution: The support rod consists of a screw and a support claw. The screw is screwed onto the disc body, and the screw and the support claw are connected by a ball head and ball socket structure. A detachable rotating handle is provided on the screw.

[0008] Further technical improvements: A grinding adjustment shim is installed between the disc body and the frame body.

[0009] Further improvement of the technical solution: The belt polishing machine is mainly composed of a support plate, belt wheels, tensioning wheel, motor and belt, wherein the support plate is arranged parallel to the flange sealing surface, and a pair of belt wheels are arranged at both ends of the support plate.

[0010] Further technical improvements: A lithium battery is installed on the frame to power the motor.

[0011] Further improve the technical solution: a pair of handles for rotating the rotating parts are installed on the frame.

[0012] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are:

[0013] This flange sealing surface grinding and repair device uses a belt polisher to repair flanges. The belt polisher features low vibration, high linear speed, and high surface finish on the workpiece, significantly improving the surface finish of the flange sealing surface. Because the sanding belt can move within a plane under the support of the support plate, the repaired flange sealing surface has good flatness.

[0014] This flange sealing surface grinding and repair device features a compact structure, portability, ease of operation, and high practicality. Attached Figure Description

[0015] Appendix Figure 1 The diagram shown is a structural schematic of the flange sealing surface grinding and repair device from one perspective.

[0016] Appendix Figure 2 The diagram shown is a structural schematic of the flange sealing surface grinding and repair device from another perspective.

[0017] Appendix Figure 3 The diagram shown is a structural schematic of the internal support component.

[0018] Appendix Figure 4 The diagram shown is a structural schematic of the rotating component from one viewpoint.

[0019] Appendix Figure 5 The diagram shown is a structural schematic of the rotating component from another perspective.

[0020] Appendix Figure 6 The diagram shown is an exploded view of the flange sealing surface grinding and repair device.

[0021] In the attached diagram: 1. Flange of oil drilling and production equipment; 2. Internal support component; 21. Disc body; 22. Support shaft; 23. Screw; 24. Support claw; 25. Rotary handle; 3. Rotating component; 31. Frame body; 32. Lithium battery; 33. Handle; 4. Belt sander; 41. Support plate; 42. Belt sander wheel; 43. Tensioner wheel; 44. Sanding belt; 45. Motor; 5. Grinding amount adjustment shim; 6. Nut. Detailed Implementation

[0022] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] A flange sealing surface grinding and repair device for oil drilling and production equipment is disclosed, relating to the field of oil drilling and production equipment. It is mainly used to solve the problems of existing flange sealing surface repair devices being difficult to carry and having poor repair effects. The composition and working principle of this flange sealing surface grinding and repair device are described in detail below.

[0024] See attached document Figure 1 and attached Figure 2 This flange sealing surface grinding and repair device mainly consists of an inner support 2 and a rotating component 3. The inner support 2 is detachably fixed to the inner wall of the flange 1 of the oil drilling and production equipment, and is used to provide rotational support for the rotating component 3. The rotating component 3 has a frame 31 that rotates around the inner support 2, and a belt polisher 4 for grinding the flange sealing surface is installed on the frame 31.

[0025] See attached document Figure 3 The inner support component 2 mainly consists of a disc body 21, a support shaft 22, and three support rods. The three support rods are arranged radially along the disc body 21, and the support shaft 22 is arranged axially along the disc body 21. The frame 31 can rotate around the support shaft 22. Specifically, each support rod consists of a screw 23 and a support claw. The screw 23 is screwed onto the disc body 21, and the screw 23 is connected to the support claw via a ball-and-socket structure. A detachable handle 24 is provided on the screw 23. By rotating the handle 24, the screw 23 can be rotated, thereby adjusting the length of the support rod and supporting the inner support component 2 against the inner wall of the oil drilling equipment flange 1.

[0026] See attached document Figure 4 and attached Figure 5The rotating component 3 has a frame 31 capable of rotating around a support shaft 22, on which a belt polisher 4 is mounted. The belt polisher 4 mainly consists of a support plate 41, belt wheels 42, tension wheels 43, a motor 45, and a sanding belt 44. The support plate 41 is parallel to the flange sealing surface, and its function is to provide support for the sanding belt 44, ensuring its movement within a single plane. A pair of belt wheels 42 are located at both ends of the support plate 41. One belt wheel 42 has a structure similar to a fixed pulley, and its function is to change the direction of movement of the sanding belt 44; the other belt wheel 42 is driven to rotate by the motor 45 to drive the sanding belt 44. A pair of tension wheels 43 can be adjusted up and down (the adjustment structure is prior art and not shown in the figure), and their function is to tighten the sanding belt 44.

[0027] The rotating component 3 needs to rotate during operation. To facilitate power supply to the motor 45, a pair of lithium batteries 32 are installed on the frame 31. To facilitate the rotation of the rotating component 3, a pair of handles 33 are provided on the frame 31.

[0028] See attached document Figure 6 During operation, the inner support 2 is first placed inside the flange 1 of the oil drilling and production equipment. Then, the length of the support rod is adjusted so that the inner support 2 rests on the inner wall of the flange 1. Because the support rod has centering properties, the support shaft 22 is perpendicular to the sealing surface of the flange.

[0029] The amount of grinding is determined based on the wear level of the flange, and a grinding adjustment shim 5 of corresponding thickness is fitted onto the support shaft 22. Then, the rotating part 3 is fitted onto the support shaft 22, and a certain preload is applied to the rotating part 3 using the nut 6. Finally, the belt sander 4 is turned on, and the handle 33 is slowly rotated to allow the sanding belt 44 to grind and repair the flange sealing surface until the entire flange sealing surface is completely ground. In the early stages of grinding, a smaller grit sanding belt 44 is used; in the later stages, a larger grit sanding belt 44 is used.

[0030] The belt polisher 4 is characterized by low vibration, high linear speed, and high surface finish of the workpiece. This flange sealing surface grinding and repair device uses the belt polisher 4 to repair flanges, which can significantly improve the surface finish of the flange sealing surface. Because the support plate 41 allows the sand belt 44 to move in a plane, the repaired flange sealing surface has good flatness.

[0031] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grinding and repair device for the flange sealing surface of oil drilling and production equipment, characterized in that: It mainly consists of an inner support component and a rotating component; the inner support component is detachably fixed to the inner wall of the flange of the oil drilling and production equipment to provide rotational support for the rotating component; The rotating component has a frame that rotates around an inner support, and a belt polisher for grinding the flange sealing surface is mounted on the frame.

2. The oil drilling and production equipment flange sealing surface grinding and repair device as described in claim 1, characterized in that: The inner support mainly consists of a disc, a support shaft, and multiple support rods. The multiple support rods are arranged radially along the disc, the support shaft is arranged axially along the disc, and the frame can rotate around the support shaft.

3. The oil drilling and production equipment flange sealing surface grinding and repair device as described in claim 2, characterized in that: The strut consists of a screw and a support claw. The screw is screwed onto the disc body, and the screw and the support claw are connected by a ball head and ball socket structure. A detachable rotating handle is provided on the screw.

4. A grinding and repair device for the flange sealing surface of oil drilling and production equipment as described in claim 2 or 3, characterized in that: A grinding adjustment shim is provided between the disc body and the frame body.

5. The oil drilling and production equipment flange sealing surface grinding and repair device as described in claim 1, characterized in that: The belt polishing machine mainly consists of a support plate, belt wheels, tensioning wheels, a motor, and a belt. The support plate is arranged parallel to the flange sealing surface, and a pair of belt wheels are arranged at both ends of the support plate.

6. The oil drilling and production equipment flange sealing surface grinding and repair device as described in claim 1, characterized in that: A lithium battery is installed on the frame to power the motor.

7. The oil drilling and production equipment flange sealing surface grinding and repair device as described in claim 1, characterized in that: A pair of handles for rotating the rotating parts are provided on the frame.

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