Device for lining polyethylene pipe on inner wall of carbon steel pipe

Abstract

The utility model relates to the technical field of steel pipe linings, and provides a device for lining a polyethylene pipe on the inner wall of a carbon steel pipe, which comprises a plurality of bearing frames which are arranged on an underframe in a sliding manner, are used for bearing the carbon steel pipe and are divided into two groups, the two groups of bearing frames are symmetrically arranged, an included angle is formed between the two groups of bearing frames, and after the bearing frames slide, the polyethylene pipe is arranged on the inner wall of the carbon steel pipe. The two bearing frames get close to or away from each other. By means of the technical scheme, the problems that in the prior art, machining models are single, and different models of pipes cannot be adapted are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe linings, and in particular to a device for lining the inner wall of a carbon steel pipe with a polyethylene pipe. Background Art

[0002] Polyethylene pipes are widely used in gas transportation, water supply and drainage, etc. due to their advantages such as long service life, strong corrosion resistance, good flexibility, light weight, convenient connection, and low friction resistance. Most of the applications in these industries use pressures below 2.5MPa. How to increase the use pressure, especially in existing oil fields, with the increase of mining depth, the concentration of corrosive media is getting higher and higher. The service life of traditional carbon steel pipes is significantly shortened due to the corrosion of the conveying medium. How to combine the corrosion resistance of polyethylene pipes with the high pressure resistance of carbon steel pipes and ensure that the joints are sealed and leak-proof is an urgent problem to be solved in most oil fields. The existing lining process requires the pipe to be cut according to the required length before lining, but the pipe model processed in the existing processing equipment is single and cannot adapt to different types of pipes. Utility Model Content

[0003] The utility model provides a device for lining the inner wall of a carbon steel pipe with a polyethylene pipe, which solves the problem in the related art that the processing model is single and cannot adapt to pipes of different models.

[0004] The technical solution of the utility model is as follows:

[0005] A device for lining the inner wall of a carbon steel pipe with a polyethylene pipe, comprising:

[0006] chassis;

[0007] There are several bearing racks, which are slidably arranged on the base frame, and the bearing racks are used to carry carbon steel pipes. The bearing racks are divided into two groups, and the two groups of bearing racks are symmetrically arranged. There is an angle between the two groups of bearing racks. After the bearing racks slide, the two groups of bearing racks have several installation grooves, and also include:

[0008] A sliding block is arranged on the supporting frame;

[0009] A guide rod is arranged in the installation groove, the guide rod is inclined relative to the base frame, and the sliding block slides along the guide rod;

[0010] An elastic member is sleeved on the guide rod, and two ends of the elastic member are respectively arranged on the base frame and the sliding block. The elastic member is used to provide a force for the two groups of the supporting frames to approach each other.

[0011] As a further technical solution, it also includes:

[0012] A first rotating wheel, rotatably arranged at one end of the carrier frame away from the base frame, wherein a plurality of the first rotating wheels are used to abut against the carbon steel pipe;

[0013] A driving member is disposed on one of the supporting frames, and the driving member is used to drive the first rotating wheel to rotate.

[0014] As a further technical solution, it also includes:

[0015] A rotating frame, rotatably arranged on the base frame;

[0016] There are a plurality of second rotating wheels, and the plurality of second rotating wheels are rotatably arranged on the rotating frame. After the rotating frame rotates, the plurality of second rotating wheels abut against or cancel the abutment with the side wall of the carbon steel pipe.

[0017] As a further technical solution, it also includes:

[0018] A sliding rod, slidably disposed on the rotating frame, and the second rotating wheel is disposed on the rotating frame through the sliding rod;

[0019] A fastener is arranged on the sliding rod, and the fastener is used to lock the sliding rod from sliding.

[0020] As a further technical solution, it also includes:

[0021] There are a plurality of lifting rods, which are arranged on the base frame. The rotating frame is arranged on the base frame through the lifting rods. The lifting rods are used to control the height of the rotating frame.

[0022] As a further technical solution, it also includes:

[0023] A lap block, arranged at one end of the base frame;

[0024] The matching groove is arranged at one end of the base frame away from the lap block, and the lap block is matched and connected with the matching groove on another adjacent base frame.

[0025] As a further technical solution, it also includes:

[0026] A heating element, arranged on the base frame;

[0027] An expansion plate, detachably arranged on the base frame, the expansion plate is conical in shape, and is used to expand the vinyl tube heated by the heating element;

[0028] A pressing plate is detachably arranged on the base frame, and the expanding plate is used to flatten the expanded vinyl tube.

[0029] The working principle and beneficial effects of the utility model are:

[0030] In the utility model, the base frame is made of high-strength steel to ensure that it can bear the weight of the entire device and its load without deformation. The base frame is designed as a planar structure to facilitate stable placement at the work site. The support frame is used to support the carbon steel pipe. Since the diameter of the carbon steel pipe has a variety of models, in order to ensure that the carbon steel pipe is fixed more stably, multiple groups of symmetrically arranged support frames are used to jointly support the carbon steel pipe. At the same time, the support frames can slide relative to the base frame. After the support frames slide, the two groups of support frames will move closer to or farther away from each other, so as to carry carbon steel pipes of different diameters and enhance the scope of application of the device. The two inclined support frames can ensure that the support force on the carbon steel pipe is more stable, and ensure that the carbon steel pipe will not fall from the support frame, thereby improving the stability during liner operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0032] Figure 1 It is a schematic diagram of the structure of the utility model;

[0033] Figure 2 For this utility model Figure 1 Middle partial enlarged picture;

[0034] Figure 3 This is a schematic diagram of the structure of the expansion plate of the utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the pressing plate of the utility model.

[0036] In the figure: 1, base frame, 2, supporting frame, 110, mounting groove, 210, sliding block, 220, through hole, 120, guide rod, 130, elastic member, 230, first rotating wheel, 3, driving member, 4, rotating frame, 410, second rotating wheel, 420, sliding rod, 430, fastener, 140, lifting rod, 610, overlapping block, 620, matching groove, 7, heating member, 8, expanding plate, 9, pressing plate. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0038] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] Reference Figure 1~Figure 4 , which is the first embodiment of the utility model, proposes a device for lining the inner wall of a carbon steel pipe with a polyethylene tube, including: a plurality of support frames 2, which are slidably arranged on a base frame 1, and the support frames 2 are used to support the carbon steel pipe. The plurality of support frames are divided into two groups, and the two groups of support frames 2 are symmetrically arranged. There is an angle between the two groups of support frames 2. After the support frames 2 slide, the ends of the two groups of support frames 2 away from the base frame 1 approach or move away from each other.

[0041] In this embodiment, the base frame 1 is made of high-strength steel to ensure that it can bear the weight of the entire device and its load without deformation. The base frame 1 is designed as a planar structure to facilitate stable placement at the work site. The support frame 2 is used to support the carbon steel pipe. Since the diameter of the carbon steel pipe has a variety of models, in order to ensure that the carbon steel pipe is fixed more stably, multiple groups of symmetrically arranged support frames 2 are used to jointly support the carbon steel pipe. At the same time, the support frames 2 can slide relative to the base frame 1. After the support frames 2 slide, the two groups of support frames 2 will move closer to or farther from each other, so as to carry carbon steel pipes of different diameters and enhance the scope of application of the device. The two inclined support frames 2 can ensure that the support force on the carbon steel pipe is more stable, and ensure that the carbon steel pipe will not fall from the support frames 2, thereby improving the stability during liner operation.

[0042] Furthermore, the base frame 1 has a plurality of mounting grooves 110, and also includes: a sliding block 210 is arranged on the supporting frame 2; a guide rod 120 is arranged in the mounting groove 110, the sliding block 210 slides along the guide rod 120, and an elastic member 130 is sleeved on the guide rod 120, and both ends of the elastic member 130 are respectively arranged on the base frame 1 and the sliding block 210, and the elastic member 130 is used to provide a force for the two groups of supporting frames 2 to approach each other.

[0043] In this embodiment, the mounting groove 110 is used to guide the sliding of the carrier 2, so that the carrier 2 always slides within a certain range, preventing the carrier 2 from carrying a carbon steel pipe that it cannot carry, and improving the safety of the device. A sliding block 210 is installed at the bottom of each carrier 2, and these sliding blocks 210 are tightly embedded in the mounting groove 110, so that the carrier 2 can slide smoothly on the base frame 1. A through hole 220 is opened on the sliding block 210, and space is reserved for the penetration of the guide rod 120. The function of the guide rod 120 is similar to that of the mounting groove 110, but the guide rod 120 can play a supporting role for the carrier 2, preventing the carrier 2 from leaving the mounting groove 110, thereby ensuring that the device can remain stable during production. The elastic member 130 can be a spring; a rubber sleeve or other parts with similar functions. Through the setting of the elastic member 130, the device can be in a suitable position as a further technical solution when working, simplifying the process of fixing the pipe, and also improving the stability of the bearing pipe, and improving the production efficiency.

[0044] Furthermore, it also includes: a first rotating wheel 230 is rotatably arranged at one end of the supporting frame 2 away from the bottom frame 1, and a plurality of first rotating wheels 230 are used to abut the carbon steel pipe; a driving member 3 is arranged on a supporting frame 2, and the driving member 3 is used to drive the first rotating wheel 230 to rotate.

[0045] In this embodiment, a plurality of first rotating wheels 230 are added at one end of each group of supporting frames 2 away from the base frame 1, and these first rotating wheels 230 are in direct contact with the outer wall of the carbon steel pipe. The first rotating wheels 230 can reduce the wear on the carbon steel pipe and ensure good rotation performance. The design of the first rotating wheels 230 enables the carbon steel pipe to rotate slightly synchronously with the movement of the supporting frames 2 during the lining process, which helps the polyethylene pipe to evenly fit the entire inner wall. The driving member 3 is an electric motor, or it can be a motor or an engine, etc. The driving member 3 can provide a force for the first rotating wheel 230 to rotate, so that the carbon steel pipe abutting against the first rotating wheel 230 also rotates, ensuring that the carbon steel pipe can rotate stably during lining, improving the automation level and operation accuracy of the lining operation, and effectively reducing the difficulty and labor intensity of manual operation.

[0046] Furthermore, it also includes: the rotating frame 4 is rotatably set on the base frame 1; there are a plurality of second rotating wheels 410, and the plurality of second rotating wheels 410 are rotatably set on the rotating frame 4. After the rotating frame 4 rotates, the plurality of second rotating wheels 410 abut against or cancel the abutment with the side wall of the carbon steel pipe.

[0047] In this embodiment, the rotating frame 4 is located above the supporting frame 2. When the rotating frame 4 rotates, the second rotating wheel 410 will abut against the side wall of the carbon steel pipe and press the carbon steel pipe tightly, ensuring that the carbon steel pipe can be located between the first rotating wheel 230 and the second rotating wheel 410. While ensuring that the carbon steel pipe can rotate, it will not fall from the device, thereby improving safety and ensuring work efficiency.

[0048] Furthermore, it also includes: a sliding rod 420 is slidably arranged on the rotating frame 4, and the second rotating wheel 410 is arranged on the rotating frame 4 through the sliding rod 420; a fastener 430 is arranged on the sliding rod 420, and the fastener 430 is used to lock the sliding rod 420 from sliding.

[0049] In this embodiment, the sliding rod 420 can slide on the rotating frame 4. Through the sliding of the sliding rod 420, the position of the second rotating wheel 410 can be adjusted, so that the device can adapt to carbon steel pipes of different diameters, thereby improving the application range of the device.

[0050] Furthermore, it also includes: a plurality of lifting rods 140 are arranged on the base frame 1 , and the rotating frame 4 is arranged on the base frame 1 through the lifting rods 140 , and the lifting rods 140 are used to control the height of the rotating frame 4 .

[0051] In this embodiment, the lifting rod 140 can ensure that the height of the rotating frame 4 can be adjusted at any time, so that when the device places pipes of different diameters, the rotating frame 4 can clamp them after adjustment, thereby increasing the application range of the device and further ensuring safety. The fastener 430 is used to fix the sliding rod 420, ensuring that the sliding rod 420 can be in a stable state after adjustment, further ensuring the stability of the device.

[0052] Furthermore, it also includes: a lap block 610 is arranged at one end of the base frame 1; a matching groove 620 is arranged at one end of the base frame 1 away from the lap block 610, and the lap block 610 is matched and connected with the matching groove 620 on another adjacent base frame 1.

[0053] In this embodiment, the overlap block 610 and the matching groove 620 are connected to each other. When it is necessary to expand the working range or process longer carbon steel pipes, the overlap block 610 can be quickly spliced ​​with the matching groove 620 on the adjacent chassis 1. This design allows the device to be linearly expanded to form a continuous working platform to meet the lining operation requirements of pipelines of different lengths. The splicing process is simple and fast, usually without the need for special tools. The operator only needs to align the interface to firmly connect it, ensuring the overall stability of the working platform.

[0054] Furthermore, it also includes: a heating element 7 is arranged on the base frame 1; an expanding plate 8 is detachably arranged on the base frame 1, the expanding plate 8 is conical, and the expanding plate 8 is used to expand the ethylene tube heated by the heating element 7; a pressing plate 9 is detachably arranged on the base frame 1, and the expanding plate 8 is used to flatten the expanded ethylene tube.

[0055] In this embodiment, the heating element 7 is used to heat the inner liner to ensure that the inner liner can soften and deform. During the heating process, the liner and the carbon steel pipe need to be kept rotating synchronously to prevent the ethylene pipe from deforming and blocking under the action of gravity after softening and deformation. The expansion plate 8 and the heating plate are used to assist in the molding of the liner to ensure that the heated liner can be tightly combined with the carbon steel pipe without leakage points, thereby improving the quality of the liner.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for lining the inner wall of a carbon steel pipe with a polyethylene pipe, characterized in that: include: Base frame (1); A plurality of support frames (2) are provided, and are slidably arranged on the base frame (1). The support frames (2) are used to support the carbon steel pipe. The plurality of support frames (2) are divided into two groups. The two groups of support frames (2) are symmetrically arranged. There is an angle between the two groups of support frames (2). After the support frames (2) slide, the two groups of support frames (2) move closer to or farther away from each other.

2. The device for lining the inner wall of a carbon steel pipe with a polyethylene pipe according to claim 1, characterized in that: The base frame (1) is provided with a plurality of mounting slots (110), and further comprises: A sliding block (210) is arranged on the supporting frame (2); A guide rod (120) is arranged in the installation groove (110), the guide rod (120) is arranged to be inclined relative to the base frame (1), and the sliding block (210) slides along the guide rod (120); An elastic member (130) is sleeved on the guide rod (120), and two ends of the elastic member (130) are respectively arranged on the base frame (1) and the sliding block (210), and the elastic member (130) is used to provide a force for bringing the two groups of support frames (2) closer to each other.

3. The device for lining the inner wall of a carbon steel pipe with a polyethylene pipe according to claim 1, characterized in that: Also includes: A first rotating wheel (230) is rotatably arranged at one end of the supporting frame (2) away from the base frame (1), and a plurality of the first rotating wheels (230) are used to abut against the carbon steel pipe; A driving member (3) is arranged on one of the supporting frames (2), and the driving member (3) is used to drive the first rotating wheel (230) to rotate.

4. The device for lining the inner wall of a carbon steel pipe with a polyethylene pipe according to claim 1, characterized in that: Also includes: A rotating frame (4) rotatably disposed on the base frame (1); The second rotating wheels (410) are in plurality, and the plurality of second rotating wheels (410) are all rotatably disposed on the rotating frame (4). After the rotating frame (4) rotates, the plurality of second rotating wheels (410) abut against or cancel the abutment with the side wall of the carbon steel pipe.

5. The device for lining the inner wall of a carbon steel pipe with a polyethylene pipe according to claim 4, characterized in that: Also includes: A sliding rod (420) is slidably arranged on the rotating frame (4), and the second rotating wheel (410) is arranged on the rotating frame (4) via the sliding rod (420); A fastener (430) is arranged on the sliding rod (420), and the fastener (430) is used to lock the sliding rod (420) from sliding.

6. The device for lining the inner wall of a carbon steel pipe with a polyethylene pipe according to claim 4, characterized in that: Also includes: A plurality of lifting rods (140) are provided on the base frame (1); the rotating frame (4) is provided on the base frame (1) via the lifting rods (140); and the lifting rods (140) are used to control the height of the rotating frame (4).

7. The device for lining the inner wall of a carbon steel pipe with a polyethylene pipe according to claim 1, characterized in that: Also includes: A lap block (610) is arranged at one end of the base frame (1); The matching groove (620) is arranged at one end of the base frame (1) away from the connecting block (610), and the connecting block (610) is matched and connected with the matching groove (620) on another adjacent base frame (1).

8. The device for lining the inner wall of a carbon steel pipe with a polyethylene pipe according to claim 1, characterized in that: Also includes: A heating element (7) is arranged on the base frame (1); An expansion plate (8) is detachably arranged on the base frame (1), the expansion plate (8) is conical in shape, and the expansion plate (8) is used to expand the vinyl tube after being heated by the heating element (7); The pressing plate (9) is detachably arranged on the base frame (1), and the expanding plate (8) is used to flatten the expanded ethylene tube.

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