Pipe penetrating device for lining oil pipe production

Abstract

The utility model belongs to the field of lining oil pipe production equipment, and particularly relates to a pipe penetrating device for lining oil pipe production, which comprises a lining pipe supporting assembly, a base pipe supporting assembly and a lining pipe traction assembly which are sequentially arranged from left to right, the lining pipe traction assembly comprises a traction frame, and a positioning plate is vertically arranged on the left side of the traction frame. A rope penetrating hole penetrates through the positioning plate, an internal thread positioning sleeve is arranged corresponding to the rope penetrating hole, a positioning ring groove is formed in the outer side of the internal thread positioning sleeve, a clamping plate capable of moving in a reciprocating mode is connected to the positioning plate through a guide assembly, and a U-shaped clamping opening correspondingly matched with the positioning ring groove is formed in the clamping plate. A winch is installed on the installation plate, and a traction rope of the winch is connected with a lining pipe fastening assembly. Only a plurality of frame bodies and winches are arranged, the structure is simple, and the manufacturing cost is low; the lining pipe can penetrate through the base pipe by pulling the lining pipe through rope winding operation of the winch, and operation is easy, convenient and fast.

Description

Pipe-through device for producing lined oil pipes Technical Field

[0001] This utility model relates to a pipe-threading device for producing lined oil pipes, belonging to the field of lined oil pipe production equipment. Background Technology

[0002] Lined tubing is a "pipe-in-pipe" structure in which a high-molecular-weight material such as ultra-high molecular weight polyethylene (UHMWPE), polyamide, or rubber-plastic alloy is laminated to the inner wall of a steel tubing. It is primarily used to address problems such as uneven wear, corrosion, scaling, and wax buildup in oil well production, and is widely applied in all stages of oil extraction, with particularly significant effects during medium-to-high water-cut periods. As the oil industry develops towards deep wells, ultra-deep wells, and high-temperature, high-pressure wells, the requirements for the high-temperature resistance of tubing are becoming increasingly stringent. Traditional polyethylene-lined tubing is insufficient to meet these requirements; therefore, special rubber-plastic alloy liners or composite material liners with excellent high-temperature resistance have been introduced. In the production of traditional polyethylene-lined tubing, a polyethylene liner with a slightly smaller aperture than the base pipe is typically inserted into the base pipe, and then the liner is laminated to the base pipe using a mechanical expansion method. If high-temperature resistant rubber-plastic alloy liner tubes are also laminated using the above process, the room temperature resilience of such materials is much lower than that of polyethylene (PE) and other plastic materials. This can lead to loosening between the liner tube and the base steel during the flanging process after tube insertion, severely affecting product quality and sealing reliability. Therefore, currently, for the lamination of such high-temperature resistant rubber-plastic alloy liner tubes, a rubber-plastic alloy liner tube with an outer diameter slightly larger than the inner diameter of the base tube is typically used to achieve a tight fit between the liner tube and the base tube. A tube insertion device is then used to pull the liner tube through the base tube.

[0003] However, existing pipe-threading equipment for lining tubes is complex in structure and cumbersome in operation. For example, the pipe-threading equipment for insulated oil pipes disclosed in application publication number CN118322589A includes a servo motor, slider, bevel gear, rubber airbag, etc., which is complex in structure and has a high manufacturing cost. Furthermore, during use, the distance between the stops needs to be adjusted by sliding the slider and the slide plate, and the servo motor drives bevel gear one to rotate bevel gear two, causing the ring to move up and down under the limit of the stops to clamp and fix the workpiece. Gas also needs to be delivered to the inside of the rubber airbag through a connecting pipe and an air supply pipe to expand the rubber airbag and fix one end of the insulation component with a fixing plate. The fixing plate is then placed inside the pipe. In addition, an existing winding mechanism is needed to fix the winding rope to the ring and pull it to achieve the pulling of the lining tube. The operation process is cumbersome and the work efficiency is low. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a pipe-threading device for the production of inner-lined oil pipes that is simple in structure and easy to operate.

[0005] The pipe-threading device for producing inner-lined oil pipes according to this utility model includes an inner-lined pipe support assembly, a base pipe support assembly, and an inner-lined pipe pulling assembly arranged sequentially from left to right. The inner-lined pipe pulling assembly includes a pulling frame. A positioning plate is arranged vertically on the left side of the pulling frame. A rope-threading hole is provided through the positioning plate. An internally threaded positioning sleeve is provided corresponding to the rope-threading hole. A positioning ring groove is provided on the outer side of the internally threaded positioning sleeve. A reciprocatingly movable clamping plate is connected to the positioning plate through a guide assembly. The clamping plate is provided with a U-shaped clamping slot that corresponds to and matches the positioning ring groove. An installation plate is fixedly connected to the right side of the pulling frame. A winch is installed on the installation plate. An inner-lined pipe fastening assembly is connected to the pulling rope of the winch.

[0006] Furthermore, the guide assembly includes two slots fixedly connected to the positioning plate, the two slots being symmetrically arranged on both sides of the rope threading hole, the card plate being inserted between the two slots, and a handle being fixedly connected to the card plate.

[0007] Furthermore, the inner liner fastening assembly includes a connector connected to the pull rope, an inner cone core connected to the connector, a striking head connected to the inner cone core, and an outer cone sleeve adapted to the outer side of the inner cone core.

[0008] Furthermore, a traction ear plate is connected to the left end of the inner cone core.

[0009] Furthermore, the striking head is connected to the right end of the inner cone core, and the connecting member is a U-shaped hanging ring hinged to the striking head.

[0010] Furthermore, the striking head and the inner cone core are connected by a thread.

[0011] Furthermore, the base pipe support assembly includes multiple base pipe support frames arranged side by side. Each base pipe support frame includes a base, with columns fixedly connected to both the front and rear sides of the base, and a support pipe fixedly connected between two columns.

[0012] Furthermore, the inner lining tube support assembly includes multiple inner lining tube support frames arranged side by side. Each inner lining tube support frame includes a support column, a wheel seat is mounted on the top of the support column, and a support wheel is rotatably mounted on the wheel seat.

[0013] Furthermore, a protective plate is fixedly connected to the wheel seat on the rightmost inner liner tube support frame.

[0014] The advantages of this utility model compared with the prior art are:

[0015] The pipe-passing device for producing inner-lined oil pipes described in this utility model only requires multiple frames and a winch, resulting in a simple structure and low manufacturing cost. By threading the internal thread positioning sleeve onto the external thread at the end of the base pipe, and then inserting the clamping plate into the positioning ring groove on the internal thread positioning sleeve, the base pipe can be positioned. The inner-lined pipe can be connected by the inner-lined pipe fastening assembly. By using the winch to reel in the rope, the inner-lined pipe can be pulled through the base pipe. The operation process is simple and convenient, effectively improving work efficiency. Attached Figure Description

[0016] Figure 1 is a three-dimensional structural diagram of this utility model;

[0017] Figure 2 is an enlarged view of point A in Figure 1;

[0018] Figure 3 is an enlarged view of point B in Figure 1;

[0019] Figure 4 is a structural schematic diagram of the inner lining tube support frame of this utility model;

[0020] Figure 5 is a schematic diagram of the structure of the base tube support frame of this utility model;

[0021] Figure 6 is a front view of the present invention in use;

[0022] Figure 7 is an enlarged view of point C in Figure 6;

[0023] Figure 8 is an enlarged view of point D in Figure 6.

[0024] In the diagram: 1. Pulling frame; 2. Base pipe support frame; 21. Base; 22. Column; 23. Support pipe; 3. Inner liner pipe support frame; 31. Support column; 32. Wheel seat; 33. Support roller; 34. Protective plate; 4. Positioning plate; 41. Rope hole; 42. Slot; 43. U-shaped bayonet; 44. Clamping plate; 45. Handle; 5. Mounting plate; 6. Winch; 61. Pulling rope; 7. Base pipe; 8. Inner liner pipe; 9. Internal threaded positioning sleeve; 91. Positioning ring groove; 10. Inner cone core; 11. Outer cone sleeve; 12. Traction ear plate; 13. Striking head; 14. Connecting piece. Detailed Implementation

[0025] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0026] Example 1:

[0027] As shown in Figures 1 to 3, the pipe-threading device for producing inner-lined oil pipes according to this utility model includes an inner-lined pipe support assembly, a base pipe support assembly, and an inner-lined pipe pulling assembly arranged sequentially from left to right. The inner-lined pipe pulling assembly includes a pulling frame 1. A positioning plate 4 is arranged vertically on the left side of the pulling frame 1. A rope-threading hole 41 is passed through the positioning plate 4. An internal thread positioning sleeve 9 is provided corresponding to the rope-threading hole 41. A positioning ring groove 91 is provided on the outer side of the internal thread positioning sleeve 9. A reciprocatingly movable clamping plate 44 is connected to the positioning plate 4 through a guide assembly. A U-shaped bayonet 43 corresponding to and adapted to the positioning ring groove 91 is provided on the clamping plate 44. An installation plate 5 is fixedly connected to the right side of the pulling frame 1. A winch 6 is installed on the installation plate 5. An inner-lined pipe fastening assembly is connected to the pulling rope 61 of the winch 6.

[0028] In use, as shown in Figures 6 to 8, first place the inner liner tube 8 on the inner liner tube support assembly and the base tube on the base tube support assembly. Then, thread the internal thread positioning sleeve 9 onto the external thread at the end of the base tube 7. Next, move the base tube 7 to the right, causing the internal thread positioning sleeve 9 to move to the position corresponding to the clamping plate 44. Then, under the guidance of the guide assembly, the clamping plate 44 moves downward, causing the U-shaped bayonet 43 to engage in the positioning ring groove 91 on the internal thread positioning sleeve 9, thereby achieving the positioning of the base tube 7. Then, the winch 6 releases the rope and pulls the inner liner tube fastening assembly out of the base tube 7. The inner liner tube 8 is then fixed by the inner liner tube fastening assembly. The winch 6 then retracts the rope, which applies a continuous and stable right-hand pulling force to the inner liner tube 8, causing it to insert into the base tube 7 and be pulled out from the right end of the base tube 7. The inner liner tube 8 is then unfixed by the inner liner tube fastening assembly, and the inner threaded positioning sleeve 9 is removed from the base tube 7, thus completing the entire tube insertion process.

[0029] The pipe-threading device for producing inner-lined oil pipes described in this utility model only consists of multiple frames and a winch 6, which has a simple structure and low manufacturing cost. By winding the rope with the winch 6, the inner-lined pipe 8 can be continuously and stably pulled, thereby allowing the inner-lined pipe 8 to pass through the base pipe 7. The operation process is simple and convenient, effectively improving work efficiency.

[0030] Example 2:

[0031] As shown in Figures 1 to 8, based on Example 1,

[0032] Furthermore, the guide assembly includes two slots 42 fixedly connected to the positioning plate 4. The two slots 42 are symmetrically arranged on both sides of the rope hole 41. The locking plate 44 is inserted between the two slots 42, and a handle 45 is fixedly connected to the locking plate 44. By lifting and pushing the handle 45, the locking plate 44 can be driven to move upward and downward under the sliding guidance of the slots 42. The structure is simple and the operation is convenient.

[0033] Furthermore, the inner liner fastening assembly includes a connector 14 connected to the pull rope 61, an inner cone core 10 connected to the connector 14, a striking head 13 connected to the inner cone core 10, and an outer cone sleeve 11 adapted to the outer side of the inner cone core 10. By pre-cutting a notch at the right end of the inner liner tube 8, the inner liner tube 8 can be placed between the inner cone core 10 and the outer cone sleeve 11 by compression. When the winch 6 performs rope winding, the pull rope 61 drives the connector 14 and the inner cone core 10 to move to the right, thereby causing the inner cone core 10 and the outer cone sleeve 11 to tightly clamp the inner liner tube 8, thus completing the fastening of the inner liner tube 8. After the inner liner tube 8 is pulled into place, the pull rope 61 is first loosened, and then the striking head 13 is struck to the left with a hammer or other tool, which causes the inner cone core 10 to move to the left, thereby loosening the clamping of the inner liner tube 8, and thus the inner cone core 10 can be removed from the inner liner tube 8.

[0034] Furthermore, a traction ear plate 12 is connected to the left end of the inner cone core 10. A traction rope can be connected to the traction ear plate 12, which facilitates the inner cone core 10 to be inserted into the base tube 7 from the right end and exited from the left end.

[0035] Furthermore, the striking head 13 is connected to the right end of the inner cone core 10, and the connecting member 14 is a U-shaped hanging ring hinged to the striking head 13. The U-shaped hanging ring is set in a horizontal direction, so that when the pulling rope 61 is loosened, the U-shaped hanging ring will flip downward under its own weight to a position perpendicular to the striking head 13, thus not interfering with the striking of the striking head 13.

[0036] Furthermore, the striking head 13 and the inner conical core 10 are connected by a thread. The striking head 13 and the inner conical core 10 can be disassembled, thereby allowing the outer conical sleeve 11 to be removed, facilitating the maintenance and replacement of the outer conical sleeve 11.

[0037] Furthermore, the base pipe support assembly includes multiple base pipe support frames 2 arranged side by side. Each base pipe support frame 2 includes a base 21, with columns 22 fixedly connected to both the front and rear sides of the base 21, and a support pipe 23 fixedly connected between two columns 22. Because the support pipe 23 is relatively long, multiple base pipes 7 can be temporarily placed, which helps to improve the efficiency of pipe threading operations.

[0038] Furthermore, the inner lining tube support assembly includes multiple inner lining tube support frames 3 arranged side by side. Each inner lining tube support frame 3 includes a support column 31, a wheel seat 32 is mounted on the top of the support column 31, and a support roller 33 is rotatably mounted on the wheel seat 32. Since the inner lining tube 8 is supported by the rotatable support roller 33, the friction between the inner lining tube 8 and the inner lining tube support frame 3 during tube insertion can be reduced.

[0039] Furthermore, a protective plate 34 is fixedly connected to the wheel seat 32 on the rightmost inner liner tube support frame 3. On the one hand, it does not affect the placement of the inner liner tube 8, and on the other hand, it can limit the inner liner tube 8 to prevent it from falling off the support roller 33 due to vibration, thus playing a protective role.

[0040] It should be noted that in the description of this utility model, the terms "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A pipe-threading device for producing lined oil pipes, characterized in that: The assembly includes, from left to right, an inner liner support assembly, a base pipe support assembly, and an inner liner pulling assembly. The inner liner pulling assembly includes a pulling frame (1). A positioning plate (4) is vertically arranged on the left side of the pulling frame (1). A rope hole (41) is passed through the positioning plate (4). An internal threaded positioning sleeve (9) is provided corresponding to the rope hole (41). A positioning ring groove (91) is provided on the outer side of the internal threaded positioning sleeve (9). A reciprocatingly movable clamping plate (44) is connected to the positioning plate (4) through a guide assembly. A U-shaped bayonet (43) is provided on the clamping plate (44) that corresponds to and matches the positioning ring groove (91). An installation plate (5) is fixedly connected to the right side of the pulling frame (1). A winch (6) is installed on the guide plate (4), and an inner liner fastening assembly is connected to the pull rope (61) of the winch (6); the guide assembly includes two slots (42) fixedly connected to the positioning plate (4), the two slots (42) are symmetrically arranged on both sides of the rope hole (41), the clamping plate (44) is inserted between the two slots (42), and a handle (45) is fixedly connected to the clamping plate (44); the inner liner fastening assembly includes a connector (14) connected to the pull rope (61), an inner cone core (10) is connected to the connector (14), a striking head (13) is connected to the inner cone core (10), and an outer cone sleeve (11) is adapted to the outer side of the inner cone core (10).

2. The pipe-threading device for producing lined oil pipes according to claim 1, characterized in that: The left end of the inner cone core (10) is connected to a traction ear plate (12).

3. The pipe-threading device for producing lined oil pipes according to claim 1, characterized in that: The striking head (13) is connected to the right end of the inner cone core (10), and the connecting piece (14) is a U-shaped hanging ring hinged to the striking head (13).

4. The pipe-threading device for producing lined oil pipes according to claim 3, characterized in that: The striking head (13) and the inner cone (10) are connected by a thread.

5. The pipe-threading device for producing lined oil pipes according to claim 1, characterized in that: The base pipe support assembly includes multiple base pipe support frames (2) arranged side by side. Each base pipe support frame (2) includes a base (21). Columns (22) are fixedly connected to both the front and rear sides of the base (21). A support pipe (23) is fixedly connected between two columns (22).

6. The pipe-threading device for producing lined oil pipes according to any one of claims 1 to 5, characterized in that: The inner lining tube support assembly includes multiple inner lining tube support frames (3) arranged side by side. The inner lining tube support frame (3) includes a support column (31). A wheel seat (32) is installed on the top of the support column (31). A support wheel (33) is rotatably installed on the wheel seat (32).

7. The pipe-threading device for producing lined oil pipes according to claim 6, characterized in that: A protective plate (34) is fixedly connected to the wheel seat (32) on the rightmost inner liner tube support frame (3).

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