Cutting device of wear-resistant petroleum sleeve for electric submersible pump

Abstract

The utility model discloses a cutting device of a wear-resistant petroleum sleeve for an electric submersible pump, and belongs to the technical field of pipeline cutting devices. A cutting device of a wear-resistant petroleum sleeve for an electric submersible pump comprises a frame and further comprises multiple sets of first telescopic cylinders, multiple sets of second telescopic cylinders, multiple sets of third telescopic cylinders and multiple sets of fourth telescopic cylinders, the second telescopic cylinder is fixedly connected to the inner bottom of the first frame, and the telescopic end of the second telescopic cylinder and the telescopic end of the first telescopic cylinder are oppositely arranged; the second motor is fixedly connected to the telescopic end of one set of first telescopic cylinders, and the output end of the second motor is fixedly connected with a cutting knife used for cutting the petroleum sleeve; through the arrangement of the polishing and wire drawing wheel capable of moving up and down, when the polishing and wire drawing device is used, the outer wall of the petroleum sleeve can be polished, the rusted part can be removed, then during follow-up cutting, the influence of surface corrosion on follow-up cutting can be reduced, an intact cutting surface can be cut conveniently, and the polishing and wire drawing device is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline cutting devices, in particular to a cutting device for a wear-resistant oil sleeve used in a submersible electric pump. Background Art

[0002] Oil casing is a steel pipe used to support the wellbore of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. Each well uses several layers of casing according to the different drilling depths and geological conditions. After the casing is lowered into the well, cement is used to cement the well. Unlike oil pipes and drill pipes, it cannot be reused and is a disposable consumable material.

[0003] The oil casing needs to be cut to the required length before use to facilitate subsequent use underground. Existing cutting devices, such as patent application number CN201820358185.7, named a cutting device for a wear-resistant oil casing for a submersible pump, discloses a cutting device for a wear-resistant oil casing for a submersible pump, including a base plate, a fixed frame with a U-shaped structure welded on the top of the base plate, a mounting hole set in the horizontal direction is opened on the outer wall of one side of the fixing frame, the inner wall of the mounting hole is fixedly sleeved with a fixing cylinder, the fixing cylinder extends into the outer ring of one end of the fixing frame and is rotatably connected to a rotating cylinder The outer ring of the rotating cylinder is fixedly sleeved with a first gear, and first movable holes are symmetrically opened on the upper and lower sides of the fixed cylinder and located on the side wall of the fixed frame. A second movable hole is opened on the side wall of the rotating cylinder and passes through the rotating cylinder. The first movable hole and the second movable hole are at the same height and are connected to each other. A first connecting rod is arranged horizontally inside the first movable hole and the second movable hole. Through the coordinated cooperation of various components, this device can ensure that the cutting surface of the oil casing is flush when cutting, and can adapt to oil casings of different pipe diameters, thereby increasing its practicality, while being simple to operate and easy to use.

[0004] However, oil casings are generally transported by trucks. During transportation, if there is rain or snow, they are easily exposed to rain, and the surface may be corroded, which will affect subsequent cutting.

[0005] Therefore, a cutting device for a wear-resistant oil sleeve for a submersible electric pump is provided to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to solve the problems raised in the above background technology, and to propose a cutting device for a wear-resistant oil sleeve for a submersible electric pump.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A cutting device for a wear-resistant oil sleeve for a submersible electric pump comprises a frame and:

[0009] A plurality of telescopic cylinders are fixedly connected to the top of the frame;

[0010] Telescopic cylinder 2 is fixedly connected to the inner bottom of the frame 1, and the telescopic cylinder 2 is arranged opposite to the telescopic end of the telescopic cylinder 1;

[0011] Motor 2 is fixedly connected to the telescopic end of one of the telescopic cylinders 1, and a cutting knife for cutting the oil casing is fixedly connected to the output end of the motor 2;

[0012] A plurality of placement racks are installed in the frame, and the placement racks are used to place oil casings;

[0013] Motor three is fixedly connected to the telescopic end of the telescopic cylinder two, and a grinding and drawing wheel is fixedly connected to the output end of the motor three. The grinding and drawing wheel and the cutting knife are located in the same plane, and the cutting knife is used to cut the outer wall of the oil sleeve polished by the grinding and drawing wheel.

[0014] In order to facilitate the rotation of the oil sleeve, preferably, the telescopic end of the remaining telescopic cylinder 1 is fixedly connected to a motor 1, and the output end of the motor 1 is fixedly connected to a friction disk, and the friction disk drives the oil sleeve to rotate in the placement rack through friction energy.

[0015] Preferably, a plurality of groups of balls are provided in the placement rack for reducing friction.

[0016] Preferably, a plurality of groups of telescopic cylinders three are fixedly connected in the frame, and the telescopic ends of the telescopic cylinders three are fixedly connected to the placement rack.

[0017] In order to increase the rust removal effect, preferably, a water tank is connected to the frame, a water pump is provided in the water tank, a connecting pipe is connected to the liquid outlet of the water pump, a nozzle is connected to the frame, and the nozzle is connected to the connecting pipe.

[0018] Preferably, the liquid outlet end of the nozzle faces the petroleum sleeve and can spray out the rust remover.

[0019] Compared with the prior art, the present invention provides a cutting device for a wear-resistant oil sleeve for a submersible electric pump, which has the following beneficial effects:

[0020] The utility model is provided with a grinding and drawing wheel that can move up and down. When in use, the outer wall of the oil sleeve can be grinded to remove the rusted part. Then, during subsequent cutting, the influence of surface rust on subsequent cutting can be reduced, so that a perfect cutting surface can be cut out and the utility model is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a cutting device for a wear-resistant oil sleeve for a submersible electric pump proposed in this utility model. Figure 1 ;

[0022] Figure 2 This is a cross-sectional diagram of a cutting device for a wear-resistant oil sleeve for a submersible electric pump proposed in this utility model. Figure 1 ;

[0023] Figure 3 This is a cross-sectional diagram of a cutting device for a wear-resistant oil sleeve for a submersible electric pump proposed in this utility model. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the structure of a cutting device for a wear-resistant oil sleeve for a submersible electric pump proposed in this utility model. Figure 2 .

[0025] In the figure: 1. Frame; 101. Telescopic cylinder 1; 102. Telescopic cylinder 2; 201. Telescopic cylinder 3; 202. Placement rack; 203. Ball bearing; 301. Motor 1; 302. Friction disc; 401. Motor 2; 402. Cutting knife; 501. Motor 3; 502. Grinding and drawing wheel; 6. Water tank; 601. Connecting pipe; 602. Nozzle. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example:

[0028] Reference Figure 1-4A cutting device for wear-resistant oil sleeves for submersible electric pumps includes a frame 1, and further includes: multiple groups of telescopic cylinders 101, all fixedly connected to the top of the frame 1; telescopic cylinders 102, fixedly connected to the bottom of the frame 1, and the telescopic cylinders 102 and the telescopic ends of the telescopic cylinders 101 are arranged opposite to each other; a motor 401, fixedly connected to the telescopic ends of one group of telescopic cylinders 101, and a cutting knife 402 for cutting the oil sleeve is fixedly connected to the output end of the motor 401; multiple groups of placement racks 202, all installed in the frame 1, and the placement racks 202 are used to place the oil sleeves; a motor 501, fixedly connected to the telescopic ends of the telescopic cylinders 102, and a grinding and drawing wheel 502 is fixedly connected to the output end of the motor 501, and the grinding and drawing wheel 502 and the cutting knife 402 are located on the same plane. The cutting knife 402 is used to cut the outer wall of the oil sleeve that has been polished by the grinding drawing wheel 502. The telescopic end of the remaining telescopic cylinder 101 is fixedly connected to a motor 301, and the output end of the motor 301 is fixedly connected to a friction disk 302. The friction disk 302 can drive the oil sleeve to rotate in the placement rack 202 through friction. The placement rack 202 is provided with multiple groups of balls 203 for reducing friction. Multiple groups of telescopic cylinders 3 201 are fixedly connected in the frame 1. The telescopic end of the telescopic cylinder 3 201 is fixedly connected to the placement rack 202. A water tank 6 is connected to the frame 1. A water pump is provided in the water tank 6. The liquid outlet end of the water pump is connected to a connecting pipe 601. A nozzle 602 is connected in the frame 1. The nozzle 602 is connected to the connecting pipe 601. The liquid outlet end of the nozzle 602 faces the oil sleeve and can spray rust remover.

[0029] When the device is in use, the oil casing to be cut is placed on the placement rack 202 through a mechanical device, and the point to be cut is moved below the cutting knife 402. At this time, the telescopic cylinder 101 equipped with the friction disc 302 is extended, and the friction disc 302 is pressed against the oil casing, squeezing and fixing the oil casing to prevent movement. The friction disc 302 should be provided in multiple groups, and only two groups are shown in the figure. Finally, the motor 1 301 is started, and the oil casing is slowly rotated on the placement rack 202 by the rotation of the friction disc 302. If the friction disc 302 cannot resist the oil casing, the telescopic cylinder 3 201 is extended until contact is made.

[0030] Then the motor 3 501 and the water pump can be started. At this time, the grinding and drawing wheel 502 will continuously grind the outer wall of the oil sleeve, thereby scraping off the rusted surface. At the same time, the nozzle 602 will continuously spray out the rust remover. The rust remover can pre-treat the cutting area, making it easier to remove rust on the subsequent grinding and drawing wheel 502. After the nozzle 602 sprays the oil sleeve once, the spraying can be stopped. Subsequently, only the grinding and drawing wheel 502 needs to be continuously removed for rust.

[0031] After the rust removal is completed, the motor 3 501 stops rotating, the cutting knife 402 rotates and keeps approaching the oil casing, and cuts the oil casing while the oil casing rotates slowly. After the cutting is completed, the telescopic cylinder 101 is reset, and the cut oil casing can be taken out later, and finally can be used for the submersible electric pump.

[0032] The utility model is provided with a grinding and drawing wheel 502 that can move up and down. When in use, it can grind the outer wall of the oil sleeve and remove the rusted part. Then, when cutting subsequently, it can reduce the influence of surface rust on subsequent cutting, making it easier to cut a perfect cutting surface and convenient to use.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cutting device for a wear-resistant oil sleeve for a submersible electric pump, comprising a frame (1), characterized in that: Also includes: Multiple sets of telescopic cylinders (101) are fixedly connected to the top of the frame (1); The second telescopic cylinder (102) is fixedly connected to the inner bottom of the frame (1), and the second telescopic cylinder (102) is arranged opposite to the telescopic end of the first telescopic cylinder (101); Motor 2 (401) is fixedly connected to the telescopic end of one of the telescopic cylinders (101), and a cutting knife (402) for cutting the oil casing is fixedly connected to the output end of motor 2 (401); A plurality of placement racks (202) are installed in the frame (1), and the placement racks (202) are used to place oil casings; Motor three (501) is fixedly connected to the telescopic end of telescopic cylinder two (102), and a grinding and drawing wheel (502) is fixedly connected to the output end of motor three (501). The grinding and drawing wheel (502) and the cutting knife (402) are located in the same plane, and the cutting knife (402) is used to cut the outer wall of the oil casing polished by the grinding and drawing wheel (502).

2. The cutting device for a wear-resistant oil sleeve for a submersible electric pump according to claim 1, characterized in that: The telescopic end of the remaining telescopic cylinder (101) is fixedly connected to a motor (301), and the output end of the motor (301) is fixedly connected to a friction disk (302). The friction disk (302) drives the oil sleeve to rotate in the placement rack (202) through friction energy.

3. The cutting device for a wear-resistant oil sleeve for a submersible electric pump according to claim 2, characterized in that: A plurality of groups of rolling balls (203) for reducing friction are arranged in the placement rack (202).

4. The cutting device for a wear-resistant oil sleeve for a submersible electric pump according to claim 1, characterized in that: Multiple groups of telescopic cylinders (201) are fixedly connected inside the frame (1), and the telescopic ends of the telescopic cylinders (201) are fixedly connected to the placement rack (202).

5. The cutting device for a wear-resistant oil sleeve for a submersible electric pump according to claim 1, characterized in that: The frame (1) is connected to a water tank (6), a water pump is provided in the water tank (6), a connecting pipe (601) is connected to the liquid outlet end of the water pump, a nozzle (602) is connected to the frame (1), and the nozzle (602) is in communication with the connecting pipe (601).

6. The cutting device for a wear-resistant oil sleeve for a submersible electric pump according to claim 5, characterized in that: The liquid outlet end of the spray head (602) faces the petroleum sleeve and can spray out the rust remover.

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