Pipeline anti-corrosion layer removing equipment

Abstract

The utility model discloses a pipeline anti-corrosion layer removing device which comprises clamping mechanisms and a cutting mechanism, the number of the clamping mechanisms is two, the clamping mechanisms are clamped and fixed on a pipeline front and back in the axis direction of the pipeline, and the cutting mechanism comprises an annular cutting mechanism which moves along the pipeline in an arc-shaped track and conducts cutting. The annular cutting mechanisms are arranged on the two clamping mechanisms, the transverse cutting mechanisms linearly move in the axis direction of a pipeline and cut the pipeline, the two annular cutting mechanisms are arranged on the two clamping mechanisms respectively, a cover plate is arranged between the two annular cutting mechanisms, and the two transverse cutting mechanisms are arranged on the left side and the right side of the cover plate respectively. A heating component is arranged on the inner side face of the cover plate. The cutting depth is controlled through the cutting mechanism, the anticorrosive coating is cut along a specific track, and the purposes that the labor intensity of workers is reduced, the risk of scratching the outer wall of a pipeline is reduced, and the edge of the cut anticorrosive coating is neat are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline systems, in particular to a pipeline anti-corrosion layer removal device. Background Art

[0002] The polyethylene anti-corrosion layer is generally a three-layer polyethylene anti-corrosion layer, referred to as 3PE. The bottom layer is generally epoxy powder coating, the middle layer is adhesive, and the outer layer is polyethylene coating. It has strong acid and alkali resistance, and has good corrosion resistance and impact resistance under low temperature conditions. PE has low water absorption, and at the same time has the advantages of high epoxy strength, low PE water absorption and good softness of hot melt adhesive. It has high anti-corrosion reliability and is widely used in oil pipelines.

[0003] When the oil pipeline will develop corrosion defects over time and be damaged by natural disasters and third-party construction, the pipeline needs to be repaired and repaired as soon as possible. During the pipeline repair or emergency repair process, the 3PE anti-corrosion layer on the pipeline surface must be stripped off before the pipeline can be repaired or repaired.

[0004] There is a kind of electromagnetic induction 3PE anti-corrosion layer rapid stripping device that can safely and efficiently complete the anti-corrosion layer stripping, so as to quickly complete the pipeline maintenance or emergency repair work. It is composed of an electromagnetic heating control system and a quick-install flame-retardant heating coil. The original machine is a temperature-controlled power supply [heating output contactor (or solid-state relay) output end] that rectifies, filters, and inverts the industrial frequency AC into 16-30KHz high-frequency AC through the electromagnetic heating control system, and connects it to the electromagnetic heating coil through a connecting line. The high-frequency AC acts on the metal heated body through the PE anti-corrosion layer, causing the heated body to heat itself. Therefore, this method can be used to heat the metal pipe to heat the anti-corrosion layer on the surface of the pipe. After the anti-corrosion layer is heated and softened, it can be easily stripped. However, at present, the stripping work after heating is usually performed manually with a handheld cutting tool, which has a high work intensity and is easy to scratch the outer wall of the pipe. In addition, the edges of the anti-corrosion layer around the exposed part of the pipe after manual cutting and stripping are uneven, which is not convenient for re-covering the anti-corrosion layer after maintenance. Utility Model Content

[0005] The purpose of the utility model is to provide a pipeline anti-corrosion layer removal device, which controls the cutting depth through a cutting mechanism and cuts the anti-corrosion layer along a specific trajectory, thereby reducing the labor intensity of manual labor, reducing the risk of scratching the outer wall of the pipeline, and making the edge of the anti-corrosion layer neat after cutting.

[0006] The technical solution adopted by the utility model to solve the above problems is:

[0007] A pipeline anti-corrosion layer removal device includes a clamping mechanism and a cutting mechanism. The clamping mechanism is provided with two and is clamped and fixed on the pipeline in the front and back directions along the axial direction of the pipeline. The cutting mechanism includes a circular cutting mechanism that moves and cuts along the pipeline in an arc trajectory, and a cross-cutting mechanism that moves and cuts in a straight line along the axial direction of the pipeline. The circular cutting mechanism is provided with two and is respectively arranged on the two clamping mechanisms. A cover plate is provided between the two circular cutting mechanisms. The cross-cutting mechanism is provided with two and is respectively arranged on the left and right sides of the cover plate. A heating component is provided on the inner side of the cover plate.

[0008] In the above technical solution, preferably, the ring cutting mechanism includes a fixed ring and a rack, and the fixed ring and the rack are both in the shape of a fan-shaped circular ring. The fixed ring is fixed on the clamping mechanism, and the rack is slidably arranged on the outside of the fixed ring. The fixed ring is provided with a driving mechanism for driving the rack to slide along the fixed ring, and a ring cutting knife is provided on the rack, and the blade head of the ring cutting knife faces the inside of the fixed ring.

[0009] In the above technical solution, preferably, the cross-cutting mechanism includes a screw motor and a cross-cutting knife, the screw motor is fixed on the cover plate, the screw of the screw motor is parallel to the axial direction of the pipeline, and a strip hole along the axial direction of the pipeline is opened on the cover plate, the outer end of the cross-cutting knife is connected to the screw of the screw motor through a threaded structure, and the inner end of the cross-cutting knife is inserted in the strip hole and the cross-cutting knife is restricted by the strip hole so as not to rotate up and down.

[0010] In the above technical solution, preferably, the clamping mechanism includes a fixed part and a movable part, the circumcision mechanism is fixed on the fixed part, the movable part is slidably arranged on the fixed part along the left and right directions, an adjustment handle with a threaded rod is rotatably arranged on the fixed part, the threaded rod of the adjustment handle passes through the movable part and is connected to the movable part through a threaded structure, and clamps are provided on both the fixed part and the movable part.

[0011] In the above technical solution, preferably, the driving mechanism includes two driving motors, which are fixed on a fixed ring. A driving gear is fixed on the rotating shaft of the driving motor, and the driving gear is respectively close to the left and right sides of the fixed part. A driven gear is arranged on the fixed ring, and the driven gear is located in the middle position of the fixed ring. Both the driving gear and the driven gear are meshed with the rack.

[0012] In the above technical solution, preferably, the heating component comprises a flame-retardant cloth and a coil, the coil is arranged in the interlayer of the flame-retardant cloth, and the flame-retardant cloth is fitted and fixed on the inner side surface of the cover plate between the two strip holes.

[0013] In the above technical solution, preferably, both ends of the cover plate are plugged into the fixing ring.

[0014] Compared with the prior art, the utility model has the following advantages and effects:

[0015] The utility model realizes the cutting of the pipeline anti-corrosion layer by driving the circular cutting mechanism and the cross-cutting mechanism to move and cut along a specific trajectory, which can reduce the workload of manual operation. At the same time, the cutting depth can be adapted according to the thickness of the anti-corrosion layer, thereby reducing the risk of scratching the outer wall of the pipeline during cutting. In addition, the cutting mechanism cuts along a specific trajectory so that the edge of the anti-corrosion layer around the exposed area on the pipeline after cutting is neater, which is convenient for re-attaching the anti-corrosion layer after maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view structural schematic diagram of the pipeline anti-corrosion layer removal device in use according to an embodiment of the utility model.

[0017] Figure 2 yes Figure 1 Bottom view of point A in the middle.

[0018] Figure 3 yes Figure 1 Bottom-view cross-sectional view at point B in the middle.

[0019] Figure 4 yes Figure 1 Enlarged cross-sectional view at point C in the middle.

[0020] Figure 5 yes Figure 3 Schematic diagram of the structure of the flat state of the heating component.

[0021] Among them, there are a clamping mechanism 1, a fixed part 11, a movable part 12, an adjusting handle 13, a threaded rod 14, a clamp 15, a pipe 2, a ring cutting mechanism 3, a fixed ring 31, a rack 32, a driving mechanism 33, a ring cutting knife 34, a driving motor 35, a driving gear 36, a driven gear 37, a cross-cutting mechanism 4, a screw motor 41, a cross-cutting knife 42, a cover plate 5, a strip hole 51, a heating component 6, a flame-retardant cloth 61, and a coil 62. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0023] See also Figure 1-Figure 5The present embodiment provides a pipeline anti-corrosion layer removal device, including a clamping mechanism 1 and a cutting mechanism. The clamping mechanism 1 is provided with two and is clamped and fixed on the pipeline 2 in the front and back direction along the axial direction of the pipeline 2. The cutting mechanism includes a circular cutting mechanism 3 that moves and cuts along the pipeline 2 in an arc trajectory, and a cross-cutting mechanism 4 that moves and cuts in a straight line along the axial direction of the pipeline 2. The circular cutting mechanism 3 is provided with two and is respectively arranged on the two clamping mechanisms 1. A cover plate 5 is provided between the two circular cutting mechanisms 3. The cross-cutting mechanism 4 is provided with two and is respectively arranged on the left and right sides of the cover plate 5. A heating component 6 is provided on the inner side of the cover plate 5.

[0024] When the utility model is used, two clamping mechanisms 1 are adapted and fixed on both sides of the area to be cut on the pipe 2, and the cover plate 5 is placed on the area to be cut, and the area to be cut is heated by the heating component 6 on the inner side of the cover plate 5. After heating for a period of time, the anti-corrosion layer in the area to be cut softens, and the cutting mechanism is started, so that the circular cutting mechanism 3 cuts along the outer wall of the pipe 2 in a circular arc track, and the cross-cutting mechanism 4 cuts along the axis of the pipe 2 in a straight line track, so that the rectangular anti-corrosion layer can be cut out of the area to be cut by the cutting mechanism. In the utility model, the cutting effect of the anti-corrosion layer of the pipe 2 is achieved by driving the circular cutting mechanism 3 and the cross-cutting mechanism 4 to move and cut along a specific track, which can reduce the labor intensity of manual operation, and the cutting depth can be adapted according to the thickness of the anti-corrosion layer, thereby reducing the risk of scratching the outer wall of the pipe 2 during cutting, and the cutting of the cutting mechanism along the specific track makes the edge of the anti-corrosion layer around the exposed area on the pipe 2 after cutting more neat, which is convenient for re-attaching and covering the anti-corrosion layer after maintenance.

[0025] See also Figure 1-Figure 3 The ring cutting mechanism 3 includes a fixed ring 31 and a rack 32, both of which are in the shape of a fan-shaped ring. The fixed ring 31 is fixed on the clamping mechanism 1, and the rack 32 is slidably arranged on the outer side of the fixed ring 31. The fixed ring 31 is provided with a driving mechanism 33 for driving the rack 32 to slide along the fixed ring 31, and the rack 32 is provided with a ring cutting knife 34, and the blade head of the ring cutting knife 34 faces the inner side of the fixed ring 31.

[0026] When the circular cutting mechanism 3 is working, the blade head of the circular cutting knife 34 is against the anti-corrosion layer of the pipe 2 but does not contact the outer wall of the pipe 2. The driving mechanism 33 drives the rack 32 to reciprocate along the outer side of the fixed ring 31 in a circular arc trajectory, so that the circular cutting knife 34 on the rack 32 can always fit on the anti-corrosion layer and perform reciprocating cutting, thereby achieving the cutting effect on the anti-corrosion layer. The reciprocating cutting can improve the cutting efficiency and make the cutting trajectory neat.

[0027] See Figure Figure 1 , Figure 3 , Figure 4 The cross-cutting mechanism 4 includes a screw motor 41 and a cross-cutting knife 42. The screw motor 41 is fixed on the cover plate 5. The screw of the screw motor 41 is parallel to the axial direction of the pipeline 2. The cover plate 5 is provided with a strip hole 51 along the axial direction of the pipeline 2. The outer end of the cross-cutting knife 42 is connected to the screw of the screw motor 41 through a threaded structure, and the inner end of the cross-cutting knife 42 is inserted into the strip hole 51 and the cross-cutting knife 42 is restricted by the strip hole 51 from rotating up and down.

[0028] When the cross-cutting mechanism 4 is working, the blade head of the cross-cutting knife 42 is against the anti-corrosion layer of the pipe 2 but will not contact the outer wall of the pipe 2. The screw motor 41 is started to rotate. Since the cross-cutting knife 42 is restricted by the strip hole 51 and cannot rotate, the cross-cutting knife 42 moves in a straight line along the axial direction of the pipe 2 under the action of the screw motor 41, and under the action of the forward and reverse rotation of the screw motor 41, the cross-cutting knife 42 is attached to the anti-corrosion layer for reciprocating cutting, thereby achieving the cutting effect on the anti-corrosion layer, improving the cutting efficiency, and at the same time, the cutting trajectory is straight and relatively neat.

[0029] See also Figure 1 , Figure 2 The clamping mechanism 1 includes a fixed part 11 and a movable part 12, the circumcision mechanism 3 is fixed on the fixed part 11, the movable part 12 is slidably arranged on the fixed part 11 along the left and right directions, an adjustment handle 13 with a threaded rod 14 is rotatably arranged on the fixed part 11, the threaded rod 14 of the adjustment handle 13 passes through the movable part 12 and is connected to the movable part 12 through a threaded structure, and a clamp 15 is arranged on both the fixed part 11 and the movable part 12.

[0030] When the utility model is adapted to be fixed on the pipe 2, the clamping mechanism 1 and the cutting mechanism are placed on the pipe 2 so that the pipe 2 is located between the two clamps 15, and then the adjusting handle 13 is rotated to drive the movable part 12 to move on the fixed part 11, so that the two clamps 15 are close to each other and finally abut against the pipe 2, achieving the effect of clamping and fixing on the pipe 2.

[0031] See also Figure 1-Figure 3 The driving mechanism 33 includes two driving motors 35, which are fixed on the fixing ring 31. A driving gear 36 is fixed on the rotating shaft of the driving motor 35. The driving gear 36 is respectively close to the left and right sides of the fixing part 11. A driven gear 37 is provided on the fixing ring 31. The driven gear 37 is located in the middle position of the fixing ring 31. The driving gear 36 and the driven gear 37 are both engaged with the rack 32.

[0032] The driving motor 35 is started to drive the driving gear 36 to rotate, so that the rack 32 is driven to slide along the fixing ring 31 through the meshing action of the driving gear 36 and the rack 32. The two driving gears 36 are as close to the left and right sides of the fixing part 11 as possible, and are pressed against the rack 32 through the driven gear 37 to improve the stability of the rack 32 during movement.

[0033] In this embodiment, in order to avoid collision between the ring cutting knife 34 and the cross cutting knife 42 when they move at the same time, the ring cutting knife 34 and the cross cutting knife 42 can work in sequence, or the rotation speed of the driving motor 35 and the screw motor 41 can be adjusted so that the reciprocating movement frequencies of the ring cutting knife 34 and the cross cutting knife 42 are adapted to each other, so that the ring cutting knife 34 and the cross cutting knife 42 will not move to the same position at the same time and collide, thereby ensuring the normal use of the utility model.

[0034] See also Figure 1-Figure 3 The two ends of the cover plate 5 are plugged into the fixing ring 31 .

[0035] When the utility model is fixed to the pipe 2, one of the clamping mechanisms 1 is first fixed to the pipe 2, and the other clamping mechanism 1 is pre-installed on the pipe 2, so that the clamping mechanism 1 will not fall off the pipe 2 and can move along the pipe 2, and then the cover plate 5 is placed between the two fixing rings 31, and one end of the cover plate 5 is inserted into the fixing ring 31 of the fixed clamping mechanism 1, and the other movable clamping mechanism 1 is moved close to the other end of the cover plate 5, and the other end of the cover plate 5 is inserted into the fixing ring 31 of the movable clamping mechanism 1, and finally the movable clamping mechanism 1 is fixed to the pipe 2 to complete the installation of the utility model on the pipe 2. The two clamping mechanisms 1 and the cover plate 5 can be separated to improve the convenience of the utility model when being carried, and the separate installation can also improve the convenience of the utility model when being installed.

[0036] See also Figure 5 The heating component 6 includes a flame-retardant cloth 61 and a coil 62 . The coil 62 is arranged in the interlayer of the flame-retardant cloth 61 . The flame-retardant cloth 61 is fitted and fixed on the inner side surface of the cover plate 5 between the two strip holes 51 .

[0037] The flame-retardant cloth 61 can contain and protect the coil 62 and can reduce the risk of fire when the temperature of the pipeline 2 is too high, thereby improving the safety of the utility model during use.

[0038] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A pipeline anti-corrosion layer removal device, characterized in that: It includes a clamping mechanism and a cutting mechanism. The clamping mechanism is provided with two and is fixed on the pipeline by clamping it front and back along the axial direction of the pipeline. The cutting mechanism includes a circular cutting mechanism that moves and cuts along the pipeline in an arc trajectory, and a cross-cutting mechanism that moves and cuts in a straight line along the axial direction of the pipeline. The circular cutting mechanism is provided with two and is respectively arranged on the two clamping mechanisms. A cover plate is provided between the two circular cutting mechanisms. The cross-cutting mechanism is provided with two and is respectively arranged on the left and right sides of the cover plate. A heating component is provided on the inner side of the cover plate.

2. The pipeline anti-corrosion layer removal device according to claim 1 is characterized in that: The ring cutting mechanism includes a fixed ring and a rack, both of which are in the shape of a fan-shaped circular ring. The fixed ring is fixed on the clamping mechanism, and the rack is slidably arranged on the outside of the fixed ring. The fixed ring is provided with a driving mechanism for driving the rack to slide along the fixed ring, and a ring cutting knife is provided on the rack, and the blade head of the ring cutting knife faces the inside of the fixed ring.

3. The pipeline anti-corrosion layer removal device according to claim 1 is characterized in that: The cross-cutting mechanism includes a screw motor and a cross-cutting knife. The screw motor is fixed on the cover plate. The screw of the screw motor is parallel to the axial direction of the pipeline. A strip hole along the axial direction of the pipeline is opened on the cover plate. The outer end of the cross-cutting knife is connected to the screw of the screw motor through a threaded structure. The inner end of the cross-cutting knife is inserted into the strip hole and the cross-cutting knife is restricted by the strip hole to prevent it from rotating up and down.

4. The pipeline anti-corrosion layer removal device according to claim 1 is characterized in that: The clamping mechanism includes a fixed part and a movable part, the circumcision mechanism is fixed on the fixed part, the movable part is slidably arranged on the fixed part along the left and right directions, an adjustment handle with a threaded rod is rotatably arranged on the fixed part, the threaded rod of the adjustment handle passes through the movable part and is connected to the movable part through a threaded structure, and clamps are arranged on both the fixed part and the movable part.

5. The pipeline anti-corrosion layer removal device according to claim 2 is characterized in that: The driving mechanism includes two driving motors, which are fixed on a fixed ring. A driving gear is fixed on the rotating shaft of the driving motor. The driving gear is close to the left and right sides of the fixed part respectively. A driven gear is arranged on the fixed ring. The driven gear is located in the middle position of the fixed ring. Both the driving gear and the driven gear are meshed with the rack.

6. The pipeline anti-corrosion layer removal device according to claim 1 is characterized in that: The heating component comprises a flame-retardant cloth and a coil, wherein the coil is arranged in the interlayer of the flame-retardant cloth, and the flame-retardant cloth is fitted and fixed on the inner side surface of the cover plate between the two strip holes.

7. The pipeline anti-corrosion layer removal device according to claim 1 is characterized in that: The two ends of the cover plate are plugged into the fixing ring.

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