An intelligent cleaning machine and working method for oil pipeline construction

Abstract

The present invention discloses an intelligent cleaning machine for oil pipeline construction, which includes a vehicle body, a grinding system, a dust suction system, a brushing system, a driving system, a flaw detection system, and a power supply control unit; the grinding system includes a grinding head, a spring handle, a fixator, a first grinding bearing, a second grinding bearing, a grinding motor, and a grinding rotating shaft, the dust suction system includes a dust suction ring, a dust suction port, a dust suction pipe, a dust storage box, a filter screen, an air suction pipe, and a dust suction pump, the brushing system includes a brush head, a first brushing bearing, a brushing rotating shaft, a second brushing bearing, a brushing motor, a material conveying pipe, a material conveying metering pump, and a paint storage tank, and the driving system includes a driving wheel, a driving motor, a connector, a first cantilever, a second cantilever, a connecting shaft, a telescopic spring, and a connecting wire. The intelligent construction machine and working method for oil pipelines of the present invention can perform operations such as grinding the inner wall of the oil pipeline, sucking dust and removing dirt, and coating with anti-rust oil or chemical reagents, and at the same time perform flaw detection on the pipeline.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction, and particularly relates to an intelligent cleaning machine and working method for oil pipeline construction. Background Art

[0002] During the construction process, there is a large amount of pipeline construction, especially in the petrochemical field where pipeline construction is more frequent. An oil pipeline consists of oil pipes and their accessories, and according to the needs of the technological process, corresponding oil pump units are equipped and designed and installed into a complete pipeline system to complete the tasks of oil unloading and transfer. The pipes of oil pipelines are generally steel pipes, which are connected into long-distance pipelines using connection devices such as welding and flanges, and valves are used for opening and closing control and flow regulation. The main transportation processes of oil pipelines include isothermal transportation, heating transportation, and batch transportation. Corrosion of pipelines and how to prevent corrosion are important aspects of pipeline maintenance. Currently, oil pipelines have become one of the main transportation tools for oil and still have considerable development potential in the future.

[0003] For oil pipelines, it is necessary to regularly clean their inner walls, remove stains and rust, or polish the inner walls, apply anti-corrosion coatings or other chemical reagents, or perform flaw detection on the inner walls of the pipelines to determine whether the condition of the pipelines is suitable for the on-site working conditions and other operations. Currently, the treatment of the inner walls of pipelines mostly uses manual labor, which is inconvenient to operate, has a large workload, and is not suitable for large-scale construction and installation projects. Summary of the Invention

[0004] In view of the above technical problems, the present invention discloses an intelligent construction machine and working method for oil pipelines, which can perform operations such as grinding, dust suction and dirt removal, and applying anti-rust oil or chemical reagents on the inner walls of oil pipelines, while performing flaw detection on the pipelines, timely sending pipeline flaw detection data, and obtaining pipeline data while cleaning the inner walls of the pipelines.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] An intelligent cleaning machine for oil pipeline construction includes a vehicle body, a grinding system, a dust suction system, a brushing system, a driving system, a flaw detection system, and a power supply control unit. A fixed rod is provided at the head of the vehicle body, a front fixing plate is provided at the front end, and a rear fixing plate is provided at the rear end. The inside of the fixed rod is a hollow structure;

[0007] The described grinding system includes a grinding head, a spring handle, a fixture, a first grinding bearing, a second grinding bearing, a grinding motor, and a grinding rotating shaft. The grinding motor is installed inside the vehicle body. The first grinding bearing is installed at the connection between the fixed rod and the vehicle body. The second grinding bearing is installed on the front fixing plate. The grinding rotating shaft extends out of the vehicle body from the inside of the fixed rod, one end passes through the first grinding bearing and the second grinding bearing and is connected to the grinding motor, and the other end is installed with a fixture. The grinding head is installed on the fixture through a spring handle;

[0008] The described dust suction system includes a dust suction ring, a dust suction port, a dust suction pipe, a dust collection box, a filter screen, an air suction pipe, and a dust suction pump. The dust suction ring is located behind the grinding head and is fixed to the outer wall of the fixed rod through a connecting rod. The dust suction pipe is located inside the fixed rod, one end is connected to the dust suction ring, and the other end is connected to the air inlet of the dust collection box. The filter screen is located inside the dust collection box. One end of the air suction pipe is connected to the air outlet of the dust collection box, and the other end is connected to the dust suction pump. The dust collection box and the air suction pump are fixed inside the vehicle body;

[0009] The described brushing system includes a brush head, a first brushing bearing, a brushing rotating shaft, a second brushing bearing, a brushing motor, a material conveying pipe, a material conveying metering pump, and a paint storage tank. The brushing motor, the material conveying metering pump, and the paint storage tank are located inside the vehicle body. The first brushing bearing is installed on the outer wall of the tail of the vehicle body. The second brushing bearing is installed on the rear fixing plate. The brushing rotating shaft passes through the first brushing bearing and the second brushing bearing, one end is connected to the brushing motor, and the other end extends out of the vehicle body and is connected to the brush head. One end of the material conveying pipe is connected to the material conveying metering pump, and the other end is in contact with the brush head. The material conveying metering pump is connected to the paint storage tank through a pipeline;

[0010] The described driving system includes driving wheels, a driving motor, a connector, a first cantilever, a second cantilever, a connecting shaft, a telescopic spring, and a connecting wire. The driving motor is installed at the end of the first cantilever and is connected to the driving wheel through a connector. One end of the second cantilever is fixed to the vehicle body, and the other end is connected to the first cantilever through a connecting shaft. One end of the telescopic spring is connected to the middle of the first cantilever, and the other end is connected to the middle of the second cantilever. One end of the connecting wire is connected to the driving motor, and the other end is connected to the power supply control unit 7. There are 4 sets of the driving system, which are evenly distributed on the vehicle body.

[0011] Further, the flaw detection system is located inside the vehicle body and is connected to the power supply control unit through a wire, and includes an ultrasonic flaw detector and a recorder. The recorder is connected to the driving system through a data line.

[0012] Further, the grinding head is sintered from silicon carbide, and the number is 3 - 5, and they are evenly distributed on the fixture.

[0013] Further, the diameter of the dust suction port is 2-5 mm, the number is multiple, the spacing distance is 1-3 mm, the number of the connecting rods is 3-5, and the filter screen is made of fiberglass material through folding processing.

[0014] Further, the grinding motor, the dust suction pump, the brush coating motor, and the feeding metering pump are all connected to the power supply control unit through wires.

[0015] Further, the brush head is made of a porous flexible material, and the material types include sponge, non-woven fabric, and knitted cotton.

[0016] The working method of the above intelligent cleaning machine for oil pipeline construction includes the following steps:

[0017] Step 1: Determine the inner diameter of the oil pipeline to be processed, put the intelligent cleaning machine for oil pipeline construction suitable for the pipeline size into the pipeline, and turn on the grinding system, the dust suction system, the brush coating system, and the flaw detection system;

[0018] Step 2: Start the power system. The intelligent cleaning machine for oil pipeline construction moves in the pipeline driven by the driving wheels. The grinding head grinds the rust and foreign matters on the inner wall of the pipeline. The dust suction system sucks the dust or foreign matters ground off into the dust collection box and is intercepted by the filter screen. The brush head of the brush coating system at the tail of the vehicle body coats the paint on the inner wall of the pipeline. The rotation speeds of the grinding motor and the brush coating motor are controlled by the power supply control unit, and the forward speed of the driving wheels is controlled.

[0019] Step 3: The recorder records the flaw detection status of the ultrasonic flaw detector and the traveling distance of the driving wheels.

[0020] Further, in the above Step 1, only one or any two of the dust suction system, the brush coating system, and the flaw detection system are turned on.

[0021] Further, in the above Step 2, the rotation speed of the grinding motor is controlled by the power supply control unit to be 30-100 revolutions per minute, the rotation speed of the brush coating motor is controlled to be 50-80 revolutions per minute, the paint delivery rate of the feeding metering pump is controlled to be 200-500 milliliters per minute, and the forward speed of the driving wheels is controlled to be 1-3 meters per minute.

[0022] Further, the recorder in the above Step 3 has a data sending function and transmits the detection data of the ultrasonic flaw detector once every 2-5 minutes.

[0023] An intelligent cleaning machine for oil pipeline construction according to the present invention can adjust the grinding diameter of the grinding head by adjusting the length of the spring handle before use to make it suitable for the inner wall condition of the pipeline. The rust dust or stains ground by the grinding head can be timely sucked away by the dust suction ring and intercepted and collected by the filter screen after being sucked into the dust collection box, avoiding the dispersion of grinding dust in the pipeline and causing inner wall pollution. The driving system of the device is four-wheel drive, and each driving wheel can be independently controlled and driven. At the same time, the first cantilever and the second cantilever are connected by a telescopic spring, and the beam cantilever can rotate around the connecting shaft. When there are obstacles such as pipeline joints and flanges or the pipeline is bent and deformed during operation in the pipeline, the included angle between the first cantilever and the second cantilever can change at any time under the action of the telescopic spring, enabling the driving wheels to cross the obstacles or the deformed section of the pipeline and move forward smoothly. After the inner wall of the pipeline is polished smoothly, after the cleaning machine passes, the brush head at the tail rotates driven by the brush motor, and under the centrifugal action, chemical reagents such as coatings or lubricating oils output from the feeding pipe are moved to the edge of the brush head to rotate and coat the inner wall of the pipeline. The brush head is made of porous flexible material and can be suitable for pipelines with different inner diameters and adsorb more coatings at the same time. According to different coatings or pipeline conditions, the amount of coating entering the feeding pipeline can be changed by the feeding metering pump. When the intelligent cleaning machine for construction moves in the pipeline, an ultrasonic flaw detector can be used to detect the pipeline at the same time, and the pipeline flaw detection data can be recorded and sent in real time to obtain the pipeline state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the intelligent cleaning machine for oil pipeline construction according to the present invention;

[0025] Figure 2 It is a schematic structural diagram of the grinding system and the dust suction system according to the present invention;

[0026] Figure 3 It is a schematic structural diagram of the driving system according to the present invention;

[0027] Figure 4 It is a left view of the grinding head according to the present invention;

[0028] Figure 5 It is a left view of the dust suction ring according to the present invention.

[0029] Among them, 1 - vehicle body, 2 - grinding system, 3 - dust suction system, 4 - brushing system, 5 - driving system, 6 - flaw detection system, 7 - power supply control unit, 101 - fixing rod, 102 - front fixing plate, 103 - rear fixing plate, 201 - grinding head, 202 - spring handle, 203 - air fixator, 204 - first grinding bearing, 205 - second grinding bearing, 206 - grinding motor, 207 - grinding rotating shaft, 301 - dust suction ring, 302 - dust suction port, 303 - dust suction pipe, 304 - dust storage box, 305 - filter screen, 306 - suction pipe, 307 - dust suction pump, 3011 - connecting rod, 401 - brush head, 402 - first brushing bearing, 403 - first brushing rotating shaft, 404 - second brushing bearing, 405 - brushing motor, 406 - material conveying pipe, 407 - material conveying metering pump, 408 - paint storage tank, 501 - driving wheel, 502 - driving motor, 503 - connector, 504 - first cantilever, 505 - second cantilever, 506 - connecting shaft, 507 - telescopic spring, 508 - connecting line, 601 - ultrasonic flaw detector, 602 - recorder. Embodiment

[0030] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described by referring to the drawings below are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0031] In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] As Figures 1-5 shown, an intelligent cleaning machine for oil pipeline construction includes a vehicle body 1, a grinding system 2, a dust suction system 3, a brushing system 4, a driving system 5, a flaw detection system 6, and a power supply control unit 7. A fixing rod 101 is provided at the head of the vehicle body 1, a front fixing plate 102 is provided at the front end, and a rear fixing plate 103 is provided at the rear end. The inside of the fixing rod 101 is a hollow structure;

[0033] The grinding system 2 includes a grinding head 201, a spring handle 202, a holder 203, a first grinding bearing 204, a second grinding bearing 205, a grinding motor 206, and a grinding rotating shaft 207. The grinding motor 206 is installed in the vehicle body 1. The first grinding bearing 204 is installed at the connection between the fixing rod 101 and the vehicle body 1. The second grinding bearing 205 is installed on the front fixing plate 102. The grinding rotating shaft 207 extends out of the vehicle body 1 from the inside of the fixing rod 101, one end passes through the first grinding bearing 204 and the second grinding bearing 205 and is connected to the grinding motor 206, and the other end is installed with a holder 203. The grinding head 201 is installed on the holder 203 through a spring handle 202. The grinding head 201 is made of sintered silicon carbide, and the number is 4, which are evenly distributed on the holder 203;

[0034] The dust suction system 3 includes a dust suction ring 301, a dust suction port 302, a dust suction pipe 303, a dust storage box 304, a filter screen 305, an air suction pipe 306, and a dust suction pump 307. The dust suction ring 301 is located at the rear of the grinding head 201 and is fixed to the outer wall of the fixing rod 101 through a connecting rod 3011. The dust suction pipe 303 is located inside the fixing rod 101, one end is connected to the dust suction ring 301, and the other end is connected to the air inlet of the dust storage box 304. The filter screen 305 is located inside the dust storage box 304. One end of the air suction pipe 306 is connected to the air outlet of the dust storage box 304, and the other end is connected to the dust suction pump 307. The dust storage box 304 and the air suction pump 307 are fixed in the vehicle body 1; The diameter of the dust suction port 302 is 3 mm, and the number is multiple. The interval distance between two adjacent dust suction ports is 2 mm. The number of connecting rods 3011 is 3. The filter screen 305 is made of fiberglass material through folding processing;

[0035] The brushing system 4 includes a brush head 401, a first brushing bearing 402, a brushing rotating shaft 403, a second brushing bearing 404, a brushing motor 405, a feeding pipe 406, a feeding metering pump 407, and a paint storage tank 408. The brushing motor 405, the feeding metering pump 407, and the paint storage tank 408 are located inside the vehicle body 1. The first brushing bearing 402 is located on the outer wall of the tail of the vehicle body 1. The second brushing bearing 404 is installed on the rear fixing plate 103. The brushing rotating shaft 403 passes through the first brushing bearing 402 and the second brushing bearing 404, one end is connected to the brushing motor 405, and the other end extends out of the vehicle body 1 and is connected to the brush head 401. One end of the feeding pipe 406 is connected to the feeding metering pump 407, and the other end is in contact with the brush head 401. The feeding metering pump 407 is connected to the paint storage tank 408 through a pipeline; The grinding motor 206, the dust suction pump 307, the brushing motor 405, and the feeding metering pump 407 are all connected to the power supply control unit 7 through wires;

[0036] The drive system 5 includes a drive wheel 501, a drive motor 502, a connector 503, a first cantilever 504, a second cantilever 505, a connecting shaft 506, a telescopic spring 507, and a connecting wire 508. The drive motor 502 is installed at the end of the first cantilever 504 and is connected to the drive wheel 501 through the connector 503. One end of the second cantilever 505 is fixed to the vehicle body 1, and the other end is connected to the first cantilever 504 through the connecting shaft 506. One end of the telescopic spring 507 is connected to the middle of the first cantilever 504, and the other end is connected to the middle of the second cantilever 505. One end of the connecting wire 508 is connected to the drive motor 502, and the other end is connected to the power supply control unit 7. There are 4 sets of the drive system 5, which are evenly distributed on the vehicle body 1.

[0037] The flaw detection system 6 is located inside the vehicle body 1 and is connected to the power supply control unit 7 through a wire. It includes an ultrasonic flaw detector 601 and a recorder 602. The recorder 602 is connected to the drive system 6 through a data line; The brush head 7 is made of a porous and flexible material, and the material types include sponge, non-woven fabric, and knitted cotton.

[0038] The working method of the above intelligent cleaning machine for oil pipeline construction includes the following steps:

[0039] Step 1: Determine the inner diameter of the oil pipeline to be processed, place the intelligent cleaning machine for oil pipeline construction suitable for the pipeline size into the pipeline, and turn on one or any two of the grinding system 2, the dust suction system 3, the brushing system 4, and the flaw detection system 6.

[0040] Step 2: Start the power system 5. The intelligent cleaning machine for oil pipeline construction moves in the pipeline driven by the drive wheel. The grinding head 201 grinds the rust and foreign objects on the inner wall of the pipeline. The dust suction system sucks the dust or foreign objects ground off into the dust collection box 304 and is intercepted by the filter screen 305. The brush head 401 of the brushing system 4 at the tail of the vehicle body 1 applies the coating to the inner wall of the pipeline. The rotation speeds of the grinding motor 206 and the brushing motor 405 are controlled through the power supply control unit 7, and the forward speed of the drive wheel 501 is controlled; The rotation speed of the grinding motor 206 is controlled to be 30 - 100 revolutions per minute through the power supply control unit 7, the rotation speed of the brushing motor 405 is controlled to be 50 - 80 revolutions per minute, the coating delivery rate of the feeding metering pump 407 is controlled to be 200 - 500 milliliters per minute, and the forward speed of the drive wheel 501 is controlled to be 1 - 3 meters per minute;

[0041] Step 3: The recorder 602 records the flaw detection status of the ultrasonic flaw detector 601 and the traveling distance of the drive wheel 501. The recorder 602 has a data sending function and transmits the detection data of the ultrasonic flaw detector 601 once every 2 - 5 minutes.

[0042] In the description of this specification, the description referring to terms such as "one embodiment", "example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An intelligent cleaning machine for oil pipeline construction, characterized in that, It includes a vehicle body, a grinding system, a dust suction system, a brushing system, a driving system, a flaw detection system, and a power supply control unit. A fixed rod is provided at the head of the vehicle body, a front fixing plate is provided at the front end, and a rear fixing plate is provided at the rear end. The inside of the fixed rod is a hollow structure; The grinding system includes a grinding head, a spring handle, a fixator, a first grinding bearing, a second grinding bearing, a grinding motor, and a grinding rotating shaft. The grinding motor is installed inside the vehicle body. The first grinding bearing is installed at the connection between the fixed rod and the vehicle body. The second grinding bearing is installed on the front fixing plate. The grinding rotating shaft extends out of the vehicle body from the inside of the fixed rod, passes through the first grinding bearing and the second grinding bearing at one end and is connected to the grinding motor, and a fixator is installed at the other end. The grinding head is installed on the fixator through a spring handle; The dust suction system includes a dust suction ring, a dust suction port, a dust suction pipe, a dust storage box, a filter screen, an air suction pipe, and a dust suction pump. The dust suction ring is located behind the grinding head and is fixed to the outer wall of the fixed rod through a connecting rod. The dust suction pipe is located inside the fixed rod, one end is connected to the dust suction ring, and the other end is connected to the air inlet of the dust storage box. The filter screen is located inside the dust storage box. One end of the air suction pipe is connected to the air outlet of the dust storage box, and the other end is connected to the dust suction pump. The dust storage box and the air suction pump are fixed inside the vehicle body; The brushing system includes a brush head, a first brushing bearing, a brushing rotating shaft, a second brushing bearing, a brushing motor, a material conveying pipe, a material conveying metering pump, and a paint storage tank. The brushing motor, the material conveying metering pump, and the paint storage tank are located inside the vehicle body. The first brushing bearing is installed on the outer wall of the tail of the vehicle body. The second brushing bearing is installed on the rear fixing plate. The brushing rotating shaft passes through the first brushing bearing and the second brushing bearing, is connected to the brushing motor at one end, and extends out of the vehicle body at the other end and is connected to the brush head. One end of the material conveying pipe is connected to the material conveying metering pump, and the other end is in contact with the brush head. The material conveying metering pump is connected to the paint storage tank through a pipeline; The driving system includes driving wheels, a driving motor, a connector, a first cantilever, a second cantilever, a connecting shaft, a telescopic spring, and a connecting wire. The driving motor is installed at the end of the first cantilever and is connected to the driving wheel through a connector. One end of the second cantilever is fixed to the vehicle body, and the other end is connected to the first cantilever through a connecting shaft. One end of the telescopic spring is connected to the middle of the first cantilever, and the other end is connected to the middle of the second cantilever. One end of the connecting wire is connected to the driving motor, and the other end is connected to the power supply control unit 7. There are 4 sets of the driving system, which are evenly distributed on the vehicle body.

2. The intelligent cleaning machine for oil pipeline construction according to claim 1, wherein, The flaw detection system is located inside the vehicle body and is connected to the power supply control unit through a wire, including an ultrasonic flaw detector and a recorder. The recorder is connected to the driving system through a data line.

3. An intelligent cleaning machine for oil pipeline construction according to claim 1, characterized in that, The grinding head is sintered from silicon carbide, and the number is 3 - 5, which are evenly distributed on the fixator.

4. An intelligent cleaning machine for oil pipeline construction according to claim 1, characterized in that, The diameter of the dust suction port is 2 - 5 mm, the number is multiple, and the interval distance is 1 - 3 mm. The number of the connecting rods is 3 - 5. The filter screen is made of fiberglass material through folding processing.

5. The intelligent cleaning machine for oil pipeline construction according to claim 1, wherein The grinding motor, the dust suction pump, the brushing motor, and the material conveying metering pump are all connected to the power supply control unit through wires.

6. The intelligent cleaning machine for oil pipeline construction according to claim 1, wherein, The brush head is made of a porous flexible material, and the material types include sponge, non-woven fabric, and knitted cotton.

7. A working method of an intelligent cleaning machine for oil pipeline construction according to any one of claims 1-6, characterized in that, It includes the following steps: Step 1: Determine the inner diameter of the petroleum pipeline to be processed. Place the intelligent cleaning machine for petroleum pipeline construction suitable for the pipeline size into the pipeline, and turn on the grinding system, dust suction system, brushing system, and flaw detection system. Step 2: Start the power system. The intelligent cleaning machine for petroleum pipeline construction moves in the pipeline driven by the driving wheels. The grinding head grinds the rust and foreign objects on the inner wall of the pipeline. The dust suction system sucks the dust or foreign objects ground off into the dust collection box and intercepts them with the filter screen. The brush head of the brushing system at the rear of the vehicle body coats the inner wall of the pipeline with the coating. Control the rotation speeds of the grinding motor and the brushing motor through the power supply control unit, and control the forward speed of the driving wheels. Step 3: The recorder records the flaw detection status of the ultrasonic flaw detector and the traveling distance of the driving wheels.

8. A working method of an intelligent cleaning machine for oil pipeline construction according to claim 7, characterized in that, In Step 1 described above, only one or any two of the dust suction system, brushing system, and flaw detection system are turned on.

9. A working method of an intelligent cleaning machine for oil pipeline construction according to claim 7, characterized in that, In Step 2 described above, control the rotation speed of the grinding motor to be 30 - 100 revolutions per minute through the power supply control unit, control the rotation speed of the brushing motor to be 50 - 80 revolutions per minute, control the coating delivery rate of the feeding metering pump to be 200 - 500 milliliters per minute, and control the forward speed of the driving wheels to be 1 - 3 meters per minute.

10. A working method of an intelligent cleaning machine for oil pipeline construction according to claim 7, characterized in that, The recorder in Step 3 has a data sending function and transmits the detection data of the ultrasonic flaw detector once every 2 - 5 minutes.

Images