阅读说明：本技术 钢质热煨弯管焊缝三层聚乙烯防腐层补偿装置 (Steel hot bending bend welding seam three-layer polyethylene anticorrosive coating compensation device ) 是由 周若涛 李亚超 王洪奎 刘福林 许东光 李海洋 于 2021-01-27 设计创作，主要内容包括：本发明涉及金属管道腐蚀与防护及输油气管道工程系统技术领域,具体为钢质热煨弯管焊缝三层聚乙烯防腐层补偿装置,包括两个机架,两个机架前后对称设置,两个机架的右端的上侧固定连接有滑台安装底板,滑台安装底板的右端的上侧和下侧均固定连接有直线滑轨,两个直线滑轨上均滑动套设有两个直线导轨滑块,四个直线导轨滑块的右端固定连接有滑动板架；其能够独立完成弯管防腐层预制前焊缝两侧凹陷区变成平滑区,以便克服焊缝两端防腐层空鼓的缺陷,本装置还能够自动纠偏将补偿带对弯管焊缝进行自动对中调整,使焊缝防腐层补偿连续精确,本装置提高了弯管三层结构防腐层质量,延长国内干线输油气管道使用寿命,提高管道运行安全。(The invention relates to the technical field of metal pipeline corrosion and protection and oil and gas pipeline engineering systems, in particular to a steel hot-bending elbow welding seam three-layer polyethylene anticorrosive coating compensation device which comprises two racks, wherein the two racks are symmetrically arranged in front and back, a sliding table mounting bottom plate is fixedly connected to the upper side of the right end of each rack, linear sliding rails are fixedly connected to the upper side and the lower side of the right end of the sliding table mounting bottom plate, two linear guide rail sliders are respectively sleeved on the two linear sliding rails in a sliding mode, and a sliding plate frame is fixedly connected to the right ends of the four linear guide rail sliders; the device can independently finish the change of the depressed areas on the two sides of the welding line into smooth areas before the prefabrication of the anticorrosive coatings of the bent pipes, so as to overcome the defect of hollowing of the anticorrosive coatings on the two ends of the welding line.)

1. The utility model provides a steel hot bending bend welding seam three-layer polyethylene anticorrosive coating compensation arrangement, includes two frames (214), its characterized in that: two the front and back symmetry of frame (214) sets up, the upside fixedly connected with slip table mounting plate (211) of the right-hand member of two frames (214), the upside and the downside of the right-hand member of slip table mounting plate (211) all fixedly connected with linear slide rail (210), it is equipped with two linear guide slider (209) all to slide the cover on two linear slide rail (210), the right-hand member fixedly connected with slip grillage (208) of four linear guide slider (209), the front side and the rear side of the right-hand member of slip grillage (208) all rotate and are connected with adjusting platen (207), the bottom side rotation in the middle of two adjusting platen (207) is connected with compensation belt pressure roller (206), the bottom of slip grillage (208) is located the upside of two adjusting platen (207) and all rotates and is connected with adjusting cylinder (205), the bottom of two adjusting cylinder (205) rotates with the top of two, the equal fixedly connected with reel support (204) in right front side and the right rear side of the bottom of slip grillage (208), the bottom side of the centre of two reel supports (204) is rotated through reel axle (203) and is connected with compensation area and puts reel (201), the outside winding that the reel (201) was put in the compensation area has welding seam compensation area (202), the one end that reel (201) was put in the compensation area was kept away from in welding seam compensation area (202) extends to the bottom side of compensation area compression roller (206), servo motor reduction gear (213) are installed through the bolt to the front side of the right-hand member of slip table mounting plate (211), there is regulation lead screw (212) output of servo motor reduction gear (213) through the coupling joint, the rear end and the slip grillage (208) threaded connection of regulation lead screw (212).

2. The steel hot bend welding seam three-layer polyethylene anticorrosive coating compensation device of claim 1, characterized in that: the device is characterized by further comprising a plurality of hot-bending bend three-layer structure polyethylene anticorrosive production lines (1), an intermediate frequency induction heating system (2), a powder spraying system (3), a bend weld seam three-layer polyethylene anticorrosive layer compensation device (4), a bend weld seam deviation-rectifying sensing control system (5), a polyethylene composite belt winding machine (6), an infrared secondary heating system (7), a water cooling system (8) and a bend pipe center rotary auxiliary tool system (9), wherein the hot-bending bend three-layer structure polyethylene anticorrosive production lines (1) are annularly arranged, the front ends of the hot-bending bend three-layer structure polyethylene anticorrosive production lines (1) are connected with a mounting ring, the intermediate frequency induction heating system (2) is arranged on the right upper side of the mounting ring, the powder spraying system (3) is arranged on the right side of the mounting ring, the hot-bending bend three-layer structure polyethylene anticorrosive layer compensation device (4) is arranged on the rear side of the powder spraying system (3), the welding line deviation rectifying sensing control system (5) of the bent pipe is installed on the bottom side of the powder spraying system (3), the polyethylene composite belt winding machine (6), the infrared secondary heating system (7) and the water cooling system (8) are sequentially installed on the lower right side of the installation ring from top to bottom, and the bent pipe center rotation auxiliary tool system (9) is connected with the inner side wall of the installation ring.

3. The steel hot bend welding seam three-layer polyethylene anticorrosive coating compensation device of claim 2, characterized in that: two the equal fixedly connected with mounting panel in bottom of frame (214).

4. The steel hot bend welding seam three-layer polyethylene anticorrosive coating compensation device of claim 3, characterized in that: rib plates are fixedly connected to the bottom sides of the right ends of the two racks (214), and the bottom ends of the two rib plates are fixedly connected with the top ends of the two mounting plates respectively.

5. The steel hot bend weld three-layer polyethylene anticorrosive coating compensation device of claim 4, characterized in that: the sliding plate frame (208) is arranged to be of an L-shaped structure.

6. The steel hot bend weld three-layer polyethylene anticorrosive coating compensation device of claim 5, characterized in that: the two adjusting pressure plates (207) are both set to be L-shaped structures.

Technical Field

The invention relates to the technical field of metal pipeline corrosion and protection and oil and gas pipeline engineering systems, in particular to a compensation device for a three-layer polyethylene anticorrosive coating of a steel hot bend welding seam.

Background

The polyethylene anticorrosive coating with the three-layer structure for the buried steel pipeline has excellent anticorrosive performance and excellent mechanical external force resistance, can meet the laying requirements in various soil environments, and is from 1996 to Beijing Shaanxi660 Natural gas pipeline construction project to middle Russian east completed in 2019 and 12 months1219 in natural gas pipeline construction, the polyethylene anticorrosive coating has been used for 25 years in China at present, can work stably in complicated buried state for a long time, and has superior performance advantages compared with other anticorrosive coatings, such as fusion bonding epoxy powder coating (FBE), the service design life of the polyethylene anticorrosive coating is 50 years and more; therefore, the corrosion-resistant coating of the hot-bending bend, which is an inseparable component of the buried steel pipeline, also has the same corrosion-resistant structure as that of the single pipe, and is expected to achieve the same service life.

At present, the prefabrication process equipment of the polyethylene anticorrosive coating of the three-layer structure of the bent pipe is incomplete, so that the prefabrication process integrity of the polyethylene anticorrosive coating of the bent pipe is lost, the quality of the anticorrosive coating is poor, and the performance of the anticorrosive coating cannot reach the performance index and the technical condition required in GB/T23257-2017 polyethylene anticorrosive coating for steel pipelines, and the anticorrosive coating of the bent pipe is a weak link of the existing pipeline anticorrosive system for many years. The corrosion-resistant layer of the steel intermediate frequency hot bending elbow (elbow for short) is a short plate in pipeline construction engineering, and the general corrosion-resistant layer has comprehensive performance which can not be compared with three-layer structure polyethylene, and can not meet the requirement of pipeline construction on the consistency of the corrosion-resistant layer of the pipeline and higher technical requirements in the future.

The main reason for the quality problem of the polyethylene anticorrosive coating with the three-layer structure of the bent pipe is that the anticorrosive coating penetrates through hollow drums at two ends of a welding line, the anticorrosive coating of the bent pipe is prefabricated by stretching and winding a polyethylene composite belt on the surface of the heated bent pipe and then cooling, the welding line is generally 2mm high, and two hollow drums are formed at two ends of the welding line and penetrate through the anticorrosive coating of the whole pipe body of the bent pipe after the anticorrosive coating is prefabricated in a factory.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a compensation device for a three-layer polyethylene anticorrosive coating of a steel hot bend welding seam, which is used for solving the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a steel hot bend welding seam three-layer polyethylene anticorrosive coating compensation device comprises two racks, wherein the two racks are symmetrically arranged front and back, the upper sides of the right ends of the two racks are fixedly connected with a sliding table mounting base plate, the upper sides and the lower sides of the right ends of the sliding table mounting base plate are fixedly connected with linear slide rails, the two linear slide rails are sleeved with two linear guide rail sliders in a sliding manner, the right ends of the four linear guide rail sliders are fixedly connected with a sliding plate frame, the front side and the rear side of the right end of the sliding plate frame are respectively and rotatably connected with an adjusting pressure plate, the bottom side of the middle of the two adjusting pressure plates is rotatably connected with a compensating belt compression roller, the bottom ends of the sliding plate frame are respectively and rotatably connected with adjusting cylinders positioned on the upper sides of the two adjusting pressure plates, the bottom ends of the two adjusting cylinders are respectively and rotatably connected with the, the bottom side in the middle of two reel supports is connected with the compensation area through the reel axle rotation and unreels the dish, and the outside winding that the reel was unreeled in the compensation area has the welding seam compensation area, and the welding seam compensation area is kept away from the one end that the reel was unreeled in the compensation area and is extended to the bottom side of compensation area compression roller, and the servo motor reduction gear is installed through the bolt in the front side of the right-hand member of slip table mounting plate, and the output of servo motor reduction gear has the regulation lead screw through the coupling joint, adjusts the rear end and the sliding.

Preferably, the device also comprises a plurality of hot-bending three-layer structure polyethylene anticorrosion production lines, a medium-frequency induction heating system, a powder spraying system, a bent pipe welding seam three-layer polyethylene anticorrosion layer compensation device, a bent pipe welding seam deviation-rectifying sensing control system, a polyethylene composite belt winding machine, an infrared secondary heating system, a water cooling system and a bent pipe center rotation auxiliary tool system, wherein the hot-bending three-layer structure polyethylene anticorrosion production lines are annularly arranged, the front ends of the hot-bending three-layer structure polyethylene anticorrosion production lines are connected with a mounting ring, the medium-frequency induction heating system is arranged on the upper right side of the mounting ring, the rear side of the powder spraying system is provided with the hot-bending three-layer structure polyethylene anticorrosion layer compensation device arranged on the rear side of the powder spraying system, the bent pipe deviation-rectifying welding seam sensing control system is arranged on the bottom side of the powder spraying system, the polyethylene composite belt winding machine, the infrared secondary heating system and the water cooling system are sequentially arranged on the right lower side of the mounting ring from top to bottom, and the elbow pipe center rotation auxiliary tool system is connected with the inner side wall of the mounting ring.

Preferably, the bottom ends of the two racks are fixedly connected with mounting plates.

Preferably, the bottom sides of the right ends of the two racks are fixedly connected with rib plates, and the bottom ends of the two rib plates are fixedly connected with the top ends of the two mounting plates respectively.

Preferably, the sliding plate frame is an L-shaped structure.

Preferably, both the two adjusting pressure plates are arranged to be in an L-shaped structure.

(III) advantageous effects

Compared with the prior art, the invention provides a compensation device for a three-layer polyethylene anticorrosive coating of a steel hot bend welding seam, which has the following beneficial effects:

this steel heat over a slow fire return bend welding seam three-layer polyethylene anticorrosive coating compensation arrangement can independently accomplish and become smooth district with the prefabricated preceding welding seam both sides depressed area of return bend anticorrosive coating to overcome the defect of welding seam both ends anticorrosive coating hollowing, this device can also carry out automatic centering adjustment with the compensation belt to the return bend welding seam, makes the continuous accuracy of welding seam anticorrosive coating compensation, and this device has improved return bend three layer construction anticorrosive coating quality, prolongs domestic main oil and gas pipeline life, improves pipeline operation safety.

Drawings

Fig. 1 is a schematic structural view-front view of the present invention;

FIG. 2 is a schematic diagram of the structure of the present invention-right side view;

FIG. 3 is a schematic view showing the usage state of the polyethylene anticorrosive coating of the three-layer structure of the hot bend pipe of the present invention in the prefabricating process.

In the figure: 201. the device comprises a compensation belt unwinding disc, 202 parts of a welding seam anticorrosion compensation belt, 203 parts of a winding disc shaft, 204 parts of a winding disc support, 205 parts of a compensation belt pressing roller, 206 parts of an adjusting pressing rod, 207 parts of an adjusting cylinder, 208 parts of a sliding plate frame, 209 parts of a linear guide rail sliding block, 210 parts of a linear guide rail, 211 parts of a sliding table mounting bottom plate, 212 parts of an adjusting screw rod, 213 parts of a motor speed reducer, 214 parts of a rack, 1 part of a hot-bending elbow three-layer structure polyethylene anticorrosion production line, 2 parts of a medium-frequency induction heating system, 3 parts of a powder spraying system, 4 parts of a elbow welding seam three-layer structure polyethylene anticorrosion layer compensation device, 5 parts of an elbow welding seam deviation rectification sensing control system, 6 parts of a polyethylene composite belt winding machine, 7 parts of an infrared secondary heating system, 8 parts of a.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-3, the steel hot bend welding seam three-layer polyethylene anticorrosive coating compensation device comprises two frames 214, the two frames 214 are symmetrically arranged in front and back, the bottom ends of the two frames 214 are both fixedly connected with mounting plates, so that the two frames 214 are conveniently mounted on the ground, the bottom sides of the right ends of the two frames 214 are both fixedly connected with rib plates, the bottom ends of the two rib plates are respectively fixedly connected with the top ends of the two mounting plates, so as to improve the connection stability of the frames 214 and the mounting plates, the upper sides of the right ends of the two frames 214 are fixedly connected with sliding table mounting bottom plates 211, the upper sides and the lower sides of the right ends of the sliding table mounting bottom plates 211 are both fixedly connected with linear slide rails 210, the two linear guide rail sliders 209 are respectively slidably sleeved on the two linear slide rails 210, the right ends of the four linear guide rail sliders, the front side and the rear side of the right end of the sliding plate frame 208 are both rotatably connected with adjusting press plates 207, both the adjusting press plates 207 are set to be L-shaped structures, the bottom side of the middle of the two adjusting press plates 207 is rotatably connected with compensation belt press rollers 206, the bottom end of the sliding plate frame 208 is positioned on the upper sides of the two adjusting press plates 207 and is rotatably connected with adjusting cylinders 205, the bottom ends of the two adjusting cylinders 205 are respectively rotatably connected with the top ends of the two adjusting press plates 207, the right front side and the right rear side of the bottom end of the sliding plate frame 208 are both fixedly connected with reel brackets 204, the bottom side of the middle of the two reel brackets 204 is rotatably connected with a compensation belt unreeling disc 201 through a reel shaft 203, a welding seam compensation belt 202 is wound on the outer side of the compensation belt unreeling disc 201, one end of the welding seam compensation belt 202 far away from the compensation belt unreeling disc 201 extends to the bottom side of, the output end of the servo motor reducer 213 is connected with an adjusting screw 212 through a coupler, the rear end of the adjusting screw 212 is in threaded connection with the sliding plate frame 208, and the adjusting cylinder 205 pushes the compensation belt pressing roller 206 to attach the anti-corrosion compensation belt 202 to the weld of the elbow pipe during operation.

It should be further explained that the device further comprises a plurality of hot-bending three-layer structure polyethylene anticorrosion production lines 1, a medium frequency induction heating system 2, a powder spraying system 3, a bent pipe welding seam three-layer structure polyethylene anticorrosion layer compensation device 4, a bent pipe welding seam deviation-rectifying sensing control system 5, a polyethylene composite belt winding machine 6, an infrared secondary heating system 7, a water cooling system 8 and a bent pipe center rotation auxiliary tool system 9, wherein the hot-bending three-layer structure polyethylene anticorrosion production lines 1 are annularly arranged, the front ends of the hot-bending three-layer structure polyethylene anticorrosion production lines 1 are connected with a mounting ring, the medium frequency induction heating system 2 is mounted on the upper right side of the mounting ring, the powder spraying system 3 is mounted on the right side of the mounting ring, the hot-bending three-layer structure polyethylene anticorrosion layer compensation device 4 is mounted on the rear side of the powder spraying system 3, the welding seam deviation-rectifying sensing control system 5 is mounted on the bottom side of the powder spraying system 3, the polyethylene composite tape winding machine 6, the infrared secondary heating system 7 and the water cooling system 8 are sequentially arranged on the right lower side of the mounting ring from top to bottom, the elbow pipe center rotation auxiliary tool system 9 is connected with the inner side wall of the mounting ring, and after the welding seam compensation tape 202 is subjected to online process lamination under the guidance of the elbow pipe welding seam deviation rectifying sensing control system 5, the polyethylene composite tape winding machine enters a winding process procedure of the polyethylene composite tape winding machine.

In summary, when the steel hot-bending bend three-layer polyethylene anticorrosive coating compensation device is used, the hot-bending bend enters the bend three-layer structure polyethylene anticorrosive production line 1, is heated through medium frequency induction, and then is conveyed to the powder spraying system 3 to reach the device, at the moment, the weld deviation correction control system starts to work, the weld compensation tape unwinding disc 201 is aligned with the weld, the adjusting cylinder 205 compresses the compensation tape compression roller 206 and pulls the compensation tape 202 to be attached to the bend weld, then the bend enters the polyethylene composite tape winding machine, and the bend wound with the polyethylene composite tape enters the infrared secondary heating system and is shaped through the water cooling system, so that the process for prefabricating the bend three-layer structure polyethylene anticorrosive coating is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.