Petroleum pipeline cleaner

Abstract

The invention belongs to the technical field of petroleum pipeline cleaning and maintenance, and particularly provides a petroleum pipeline cleaner which is characterized in that a motor, a battery and a controller are sequentially connected into a supporting framework from left to right, sealing plates are connected to the outer sides of the left portion and the right portion of the supporting framework in a sleeving mode, and the power output end of the motor is connected with a stirring wheel which is located outside the left side of the supporting framework; the right side of the supporting framework is externally connected with a pressure sensor; the controller is electrically connected with the motor, the battery and the pressure sensor. The problems that when an existing pipe cleaner is used for descaling, a power source is needed for supplying power all the time, an external power line is not suitable for cleaning operation of a long-distance pipeline, the stored electric quantity is limited due to limitation of the size of a built-in battery, the operation time needs to be shortened for charging, the cleaning time is prolonged, and the working efficiency is reduced are solved. Under the normal working condition, power consumption is not needed, and the storage battery is started only when the pipe cleaner is blocked, so that the working time of the pipe cleaner in a petroleum pipeline is prolonged, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning and maintaining oil pipelines, and in particular relates to an oil pipeline cleaning device. Background Art

[0002] Pipe cleaning devices are special tools that are driven by gas, liquid or pipeline transmission medium (oil, liquefied natural gas) to clean pipelines. They can remove debris from crude oil and operating pipelines and reduce corrosion damage to the inner wall of the pipeline.

[0003] During long-term use, oil and dirt are easily accumulated in the pipe wall of the oil pipeline, which needs to be cleaned and unblocked regularly. At present, a pipe cleaner is usually inserted into the pipeline, and then compressed gas is filled into the pipeline to push the pipe cleaner to slide and scrape the oil and dirt on the pipe wall. Finally, the oil and dirt are pushed out of the pipe to clean and unblock the pipeline. However, when the oil and dirt in the pipeline is too thick, the pipe cleaner is very likely to get stuck, and the pipe cleaner with built-in scraping ability needs to provide power. The external power cord is not suitable for long-distance pipeline cleaning operations. The pipe cleaner with built-in battery has limited size, resulting in limited storage of electricity, and the operation time needs to be shortened for charging, which undoubtedly increases the cleaning time and reduces work efficiency.

[0004] The Chinese patent document with the publication number CN220005288U discloses a self-unblocking speed-regulating pipe cleaning device, which belongs to the technical field of speed-regulating pipe cleaning devices, and comprises a pipe cleaning device body, wherein the inner cavity of the pipe cleaning device body is rotatably provided with a worm, the bottom of the worm is connected to a worm wheel for transmission, and a transmission rod is fixedly connected to the inside of the worm wheel. The utility model is provided with a mounting block, a motor, a worm, a worm wheel, a transmission rod and a transmission screw. When the inside of the speed-regulating pipe cleaning device is blocked, the output end of the motor can be used to drive the worm to rotate, the rotation of the worm drives the worm wheel to rotate, the rotation of the worm wheel drives the transmission rod to rotate, the rotation of the transmission rod drives the transmission screw to rotate, and the rotation of the transmission screw drives the cutting blade to rotate, thereby cutting and stirring the blockage in the speed-regulating pipe cleaning device, thereby achieving the effect of self-unblocking, and solving the problem that the speed-regulating pipe cleaning device is easily blocked during use, and at this time, the staff needs to clean the inside of the speed-regulating pipe cleaning device, thereby reducing the use effect of the speed-regulating pipe cleaning device. Summary of the invention

[0005] The oil pipeline cleaning device provided by the present invention aims to overcome the problem that the existing technology requires a power supply when scraping dirt on the pipeline, and the external power cord is not suitable for cleaning operations of long-distance pipelines. The pipeline cleaning device with a built-in battery has limited size, resulting in limited storage power, and the operation time needs to be shortened for charging, which increases the cleaning time and reduces work efficiency.

[0006] To this end, the present invention provides a pig for petroleum pipelines, which includes a support framework, a sealing plate, a stirring wheel, a motor, a battery, a controller and a pressure sensor. Inside the support framework, the motor, the battery and the controller are sequentially connected from left to right. Sealing plates are sleeved on the outer sides of the left and right parts of the support framework. The power output end of the motor is connected to the stirring wheel, and the stirring wheel is located outside the left side of the support framework. The pressure sensor is externally connected to the right side of the support framework. The controller is electrically connected to the motor, the battery and the pressure sensor respectively.

[0007] Preferably, the support framework is cylindrical in shape, and a hollow chamber is provided inside the cylinder. The motor, the battery and the controller are all located inside the hollow chamber.

[0008] Preferably, the pig for petroleum pipelines further includes a first mounting seat. The motor, the battery and the controller are all connected to the support framework through one or more first mounting seats.

[0009] Preferably, the first mounting seat is cylindrical in shape, and a through hole is provided on the central axis of the cylinder of the first mounting seat. The motor, the battery and the controller are all connected inside the through hole, and the curved surface of the cylinder of the first mounting seat is connected to the inner wall of the support framework.

[0010] Preferably, a plurality of heat dissipation holes are provided on the first mounting seat.

[0011] Preferably, two second mounting seats are sleeved on the outer side of the middle part of the support framework, and the two second mounting seats are arranged at intervals left and right. The outer sides of the second mounting seats are connected to the sealing plate.

[0012] Preferably, a plurality of heat dissipation fins are connected to the outer side surface of the support framework between the two second mounting seats.

[0013] Preferably, a maintenance port is provided at the right end of the support framework.

[0014] Preferably, a plug cap is connected inside the maintenance port, and the pressure sensor is connected to the right side of the plug cap.

[0015] Preferably, the stirring wheel includes a support and a plurality of stirring rods. The support is circular ring-shaped, and a plurality of stirring rods are connected to the outer side of the circular ring, and the plurality of stirring rods are evenly distributed at equal intervals along the outer circumference of the circular ring. The inner side of the support is connected to the power output end of the motor.

[0016] The beneficial effects of the present invention:

[0017] 1. The pigging device for oil pipelines provided by the present invention includes a support skeleton, a sealing plate, a stirring wheel, a motor, a battery, a controller, and a pressure sensor. The motor, the battery, and the controller are connected inside the support skeleton. The stirring wheel is connected to the outside of the left side of the support skeleton, and the pressure sensor is connected to the outside of the right side of the support skeleton. After the pigging device is sent into the pipeline, compressed air or clean water flow is filled into the rear end of the pigging device to push the pigging device to slide forward. When the oil scale in the pipeline is too thick and hard to cause the pigging device to be unable to slide forward, the rear fluid continues to enter the pipeline, and the pressure in the pipeline gradually increases. If the pigging device still cannot be pushed forward when the pressure in the pipeline reaches a certain value, the excessive pressure will have an adverse impact on the structural strength of the pipeline. Therefore, the present invention uses the pressure sensor at the tail of the support skeleton to collect the pressure inside the pipeline. When the pressure is too high and still cannot push the pigging device forward, the controller controls the motor to act. The drive shaft of the motor passes through the support skeleton and is connected to the stirring wheel to drive it to rotate, so that the stirring wheel rotates to scrape off the oil scale in front of the sealing plate. Moreover, under normal working conditions, no electricity is consumed, and only when the pigging device is blocked, the battery is started, thereby prolonging the operation time of the pigging device in the oil pipeline and improving the work efficiency.

[0018] 2. For the pigging device for oil pipelines provided by the present invention, a hollow chamber is provided inside the support skeleton. The motor, the battery, and the controller are all connected to the hollow chamber of the support skeleton through one or more mounting seats one. A plurality of heat dissipation holes are provided on the mounting seat one, so that the heat generated by the internal electrical components (motor, battery, and controller) circulates inside, avoiding local overheating. Finally, the heat is transferred to the support skeleton to dissipate the heat, reducing the temperature inside the hollow chamber.

[0019] 3. For the pigging device for oil pipelines provided by the present invention, a plurality of heat dissipation fins are provided in the middle section on the outside of the support skeleton to accelerate the heat dissipation efficiency and reduce the temperature inside the hollow chamber.

[0020] 4. For the pigging device for oil pipelines provided by the present invention, the stirring wheel includes a support and six stirring rods. The six stirring rods include three long rods and three short rods, and the long rods and the short rods are arranged at intervals around the circumference of the support. When removing scale, the short rods first scrape off a part of the oil scale to relieve part of the pressure, and then the long rods scrape off the remaining part of the oil scale, removing the stubborn oil scale step by step and reducing the cleaning difficulty. Secondly, when the pigging device slides, the oil scale directly appears beside the long rods, and the long rods require greater torque to scrape it off. Due to the arrangement of the long rods and the short rods at intervals, by making the motor perform intermittent forward and reverse rotations, when rotating forward, the long rods cannot remove the stubborn oil scale. When rotating in reverse, the adjacent short rods can remove a part of the stubborn oil scale, and then the long rods scrape off the remaining part of the oil scale, with good scale removal effect. Description of the Drawings

[0021] The present invention will be further described in detail below with reference to the drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a pigging tool for oil pipelines Figure 1 ;

[0023] Figure 2 It is a schematic diagram of the overall structure of a pigging tool for oil pipelines Figure 2 ;

[0024] Figure 3 It is the left view of the pigging tool for oil pipelines;

[0025] Figure 4 It is a schematic diagram of the disassembled structure of the pigging tool for oil pipelines;

[0026] Figure 5 It is a schematic diagram of the structure of the support skeleton;

[0027] Figure 6 It is a schematic diagram of the internal structure of the support skeleton;

[0028] Figure 7 It is a schematic diagram of the structure of the stirring wheel.

[0029] Explanation of reference numerals: 1, support skeleton; 2, sealing plate; 3, stirring wheel; 4, motor; 5, battery; 6, controller; 7, pressure sensor; 8, heat sink; 9, sealing bearing; 10, plug cap; 101, hollow chamber; 102, mounting seat 1; 103, mounting seat 2; 1021, heat dissipation hole; 1022, through hole; 301, support; 302, stirring rod; 303, scraping plate; 3021, long rod; 3022, short rod. Detailed implementation manners

[0030] The principles and features of the present invention will be described below with reference to the accompanying drawings.

[0031] Embodiment 1:

[0032] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 6 , a pigging tool for oil pipelines includes a support skeleton 1, a sealing plate 2, a stirring wheel 3, a motor 4, a battery 5, a controller 6 and a pressure sensor 7. The motor 4, the battery 5 and the controller 6 are sequentially connected inside the support skeleton 1 from left to right. Sealing plates 2 are sleeved on the outer sides of the left and right parts of the support skeleton 1. The power output end of the motor 4 is connected to the stirring wheel 3. The stirring wheel 3 is located outside the left side of the support skeleton 1. The pressure sensor 7 is externally connected to the right side of the support skeleton 1. The controller 6 is electrically connected to the motor 4, the battery 5 and the pressure sensor 7 respectively.

[0033] The pigging device for oil pipelines provided by the present invention, after the pigging device is sent into the pipeline, compressed air or clean water flow is filled into the rear end of the pigging device to push the pigging device to slide forward. When the oil scale in the pipeline is too thick and hard to cause the pigging device to be unable to slide forward, the rear fluid continues to enter the pipeline, and the pressure in the pipeline gradually increases. If the pigging device still cannot be pushed forward when the pressure in the pipeline reaches a certain value, the excessive pressure will have an adverse impact on the structural strength of the pipeline. Therefore, the present invention uses the pressure sensor 7 at the tail of the support skeleton to collect the pressure inside the pipeline. When the pressure is too high and still cannot push the pigging device forward, the controller 6 controls the motor 4 to act. The drive shaft of the motor 4 passes through the support skeleton 1 and connects to the stirring wheel 3 to drive it to rotate, so that the stirring wheel 3 rotates to scrape the oil scale in front of the sealing plate 2 clean. Moreover, under normal working conditions, it does not consume electricity, and only starts the battery 5 when the pigging device is blocked, thereby extending the operation time of the pigging device in the oil pipeline and improving work efficiency.

[0034] Embodiment 2:

[0035] On the basis of Embodiment 1, as Figure 5 and Figure 6 shown, the shape of the support skeleton 1 is cylindrical, and a hollow chamber 101 is provided inside the cylinder. The motor 4, the battery 5 and the controller 6 are all located in the hollow chamber 101.

[0036] Specifically, the cylindrical structure is conducive to rolling or sliding. The hollow chamber 101 makes full use of the internal space of the support skeleton 1, saves space, and has a simple structure.

[0037] Preferably, the pigging device for oil pipelines further includes a first mounting seat 102. The motor 4, the battery 5 and the controller 6 are all connected to the support skeleton 1 through one or more first mounting seats 102.

[0038] Specifically, through the first mounting seat 102, the motor 4, the battery 5 and the controller 6 can be stably connected in the hollow chamber 101 of the support skeleton 1. The connection is simple, and it can prevent the internal electrical appliances from shifting when the pigging device moves, causing damage. The motor 4 and the battery 5 are both connected to the support skeleton 1 through 2 first mounting seats 102, and the 2 first mounting seats 102 are spaced apart left and right. The controller 6 is connected to the support skeleton 1 through 1 first mounting seat 102.

[0039] Preferably, the shape of the first mounting seat 102 is cylindrical, and a through hole 1022 is provided on the central axis of the cylinder of the first mounting seat 102. The motor 4, the battery 5 and the controller 6 are all connected in the through hole 1022, and the cylindrical surface of the first mounting seat 102 is connected to the inner wall of the support skeleton 1.

[0040] The through hole 1022 is convenient for installing the motor 4, the battery 5 or the controller 6 inside, and reusing the space.

[0041] Preferably, a plurality of heat dissipation holes 1021 are formed in the mounting base 102.

[0042] Specifically, the heat generated by the internal electrical components (motor 4, battery 5, and controller 6) circulates inside through the plurality of heat dissipation holes 1021, avoiding local overheating. Finally, the heat is transferred to the support skeleton 1 and dissipated, reducing the temperature inside the hollow chamber.

[0043] Preferably, the plurality of heat dissipation holes 1021 are circumferentially spaced apart; the heat dissipation effect is good.

[0044] Preferably, two second mounting bases 103 are sleeved on the outer side of the middle part of the support skeleton 1. The two second mounting bases 103 are spaced left and right, and a sealing plate 2 is connected to the outer side of the second mounting base 103.

[0045] Specifically, the second mounting base 103 plays a role in limiting and connecting the sealing plate 2.

[0046] Preferably, the second mounting base 103 and the support skeleton 1 are of an integral structure. The structure is simple and the overall stability is good.

[0047] Preferably, the second mounting base 103 and the sealing plate 2 are connected by bolts. The installation and disassembly are convenient.

[0048] Preferably, a plurality of heat sinks 8 are connected to the outer side surface of the support skeleton 1 between the two second mounting bases 103.

[0049] Specifically, a plurality of heat sinks 8 are arranged in the middle section on the outer side of the support skeleton 1, accelerating the heat dissipation efficiency and reducing the temperature inside the hollow chamber.

[0050] Preferably, a maintenance opening 103 is formed at the right end of the support skeleton 1.

[0051] Specifically, a maintenance opening 103 communicating with the hollow chamber 101 is formed at the right end (rear end) of the support skeleton 1. When the internal electrical components fail, they can be replaced or adjusted through the maintenance opening 103.

[0052] Preferably, a plug cap 10 is connected inside the maintenance opening 103, and a pressure sensor 7 is connected to the right side of the plug cap 10.

[0053] Specifically, the maintenance opening 103 is sealed by the plug cap 10. The pressure sensor 7 is arranged outside the plug cap 10, and the pressure sensor 7 is used to continuously monitor the gas pressure in the rear pipeline.

[0054] Preferably, the motor 4 is a reduction motor. A larger torque can be provided through the reduction mechanism inside the reduction motor, facilitating the scraping of stubborn oil stains. The drive shaft of the motor 4 passes through the support skeleton 1 and is connected to the stirring wheel 3 to drive it to rotate.

[0055] Preferably, the drive shaft of the motor 4 is rotatably connected to the support frame 1 through a sealed bearing 9 to prevent grease from entering the hollow chamber 101 of the support frame 1 from the connection.

[0056] Preferably, the sealing plate 2 is a straight plate sealing plate; the sealing performance is better, and under normal working conditions, the grease attached to its surface is scraped off by contacting the inner wall of the oil pipeline through the sealing plate 2.

[0057] Embodiment 3:

[0058] On the basis of Embodiment 2, as Figure 3 and Figure 7 shown, the stirring wheel 3 includes a support 301 and a plurality of stirring rods 302. The shape of the support 301 is a circular ring. A plurality of stirring rods 302 are connected to the outer side of the circular ring, and the plurality of stirring rods 302 are equidistantly distributed along the outer circumference of the circular ring. The power output end of the motor 4 is connected to the inside of the support 301.

[0059] Specifically, this structure makes the forces on the stirring rods 302 more balanced with each other.

[0060] Preferably, the number of the stirring rods 302 is 6. With 6, the structure is simpler on the basis of meeting the use requirements.

[0061] Preferably, the 6 stirring rods 302 include 3 long rods 3021 and 3 short rods 3022, and the long rods 3021 and the short rods 3022 are arranged at intervals around the circumference of the support 301.

[0062] Specifically, the short rods 3022 first scrape off a part of the grease to relieve part of the pressure, and then the long rods 3021 scrape off the remaining part of the grease, cleaning the stubborn grease step by step and reducing the cleaning difficulty. Secondly, when the pig moves, the grease directly appears beside the long rods 3021, and the long rods 3021 require a greater torque to scrape it off. Due to the effect of the alternating arrangement of the long rods and the short rods, by making the motor 4 perform intermittent forward and reverse rotations, when rotating forward, the long rods 3021 cannot remove the stubborn grease, and when rotating in reverse, the adjacent short rods 3022 can remove a part of the stubborn grease, and then the long rods 3021 scrape off the remaining part of the grease.

[0063] Preferably, scraping plates 303 are connected to the ends of the long rods 3021 and the short rods 3022; the scraping plates 303 have a large contact area with the inner wall of the pipeline, and the scraping efficiency is better.

[0064] The working principle of the pig for the oil pipeline of the present invention is:

[0065] First, send the pigging device for the oil pipeline into the launch port of the oil pipeline, making the sealing plate 2 elastically seal with the inner wall of the pipeline. There is a certain gap between the scraping plate 303 on the stirring wheel 3 and the inner wall of the pipeline. Among them, the scraping plate 303 at the end of the long rod 3021 is higher than the scraping plate 303 at the end of the short rod 3022. Then close the launch port and fill compressed air into the pipeline behind the pigging device for the oil pipeline. The pigging device for the oil pipeline continuously slides forward under the thrust of the compressed air. At the same time, the sealing plate 2 scrapes off the oil dirt on the inner wall of the oil pipeline clean. When the oil dirt on the inner wall of the oil pipeline is too stubborn and jams the pigging device for the oil pipeline in the pipeline and it cannot move, the compressed air in the pipeline behind the pigging device for the oil pipeline continuously accumulates, making the internal pressure increase. At this time, part of the oil dirt is scraped off from the inner wall of the pipeline under the action of the pressure, and the pigging device for the oil pipeline can continue to slide forward. When the oil dirt is too thick and hard, the pressure of the internal gas continuously increases until the pressure sensor 7 monitors that the pressure reaches the set value. Then the controller 6 receives the signal and controls the motor 4 to perform intermittent forward and reverse rotations. When rotating forward, the scraping plate 303 at the end of the long rod 3021 cannot remove the stubborn oil dirt. When rotating in reverse, the scraping plate 303 at the end of the adjacent short rod 3022 can remove part of the stubborn oil dirt, and then the scraping plate 303 of the long rod 3021 scrapes off the remaining part of the oil dirt clean. Then the pigging device continues to slide forward, and finally pushes the oil dirt scraped in front to the pipeline outlet to complete the cleaning work.

[0066] In the description of the present invention, it should be understood that if there are terms such as "left", "inner", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation to the present invention.

[0067] The above examples are only illustrative of the present invention and do not constitute a limitation to the protection scope of the present invention. Any design identical or similar to the present invention falls within the protection scope of the present invention.

Claims

1. A pig for oil pipelines, characterized in that: It includes a support skeleton (1), a sealing plate (2), a stirring wheel (3), a motor (4), a battery (5), a controller (6) and a pressure sensor (7). Inside the support skeleton (1), the motor (4), the battery (5) and the controller (6) are connected in sequence from left to right. Sealing plates (2) are sleeved on the outer sides of the left and right parts of the support skeleton (1). The power output end of the motor (4) is connected to the stirring wheel (3), and the stirring wheel (3) is located outside the left side of the support skeleton (1). The pressure sensor (7) is externally connected to the right side of the support skeleton (1). The controller (6) is electrically connected to the motor (4), the battery (5) and the pressure sensor (7) respectively.

2. The pigging tool for oil pipelines according to claim 1, characterized in that: The support skeleton (1) is cylindrical in shape, and a hollow chamber (101) is provided inside the cylinder. The motor (4), the battery (5) and the controller (6) are all located inside the hollow chamber (101).

3. The pigging tool for oil pipelines according to claim 1, wherein: The pig for petroleum pipeline also includes a first mounting seat (102), and the motor (4), the battery (5) and the controller (6) are all connected to the support skeleton (1) through one or more first mounting seats (102).

4. The pigging device for petroleum pipeline according to claim 3, wherein: The first mounting seat (102) is cylindrical in shape, and a through hole (1022) is provided on the central axis of the cylinder of the first mounting seat (102). The motor (4), the battery (5) and the controller (6) are all connected inside the through hole (1022), and the curved surface of the cylinder of the first mounting seat (102) is connected to the inner wall of the support skeleton (1).

5. The pigging device for oil pipelines according to claim 4, characterized in that: A plurality of heat dissipation holes (1021) are provided on the first mounting seat (102).

6. The pigging device for oil pipelines according to claim 2, characterized in that: Two second mounting seats (103) are sleeved on the outer side of the middle part of the support skeleton (1), and the two second mounting seats (103) are arranged at intervals left and right. The outer sides of the second mounting seats (103) are connected to the sealing plate (2).

7. The pig for petroleum pipeline according to claim 6, wherein: A plurality of heat dissipation fins (8) are connected to the outer side surface of the support skeleton (1) between the two second mounting seats (103).

8. The pigging device for oil pipelines according to claim 2, characterized in that: A maintenance port (103) is provided at the right end of the support skeleton (1).

9. The pig for petroleum pipeline according to claim 8, wherein: A plug cap (10) is connected inside the maintenance port (103), and the pressure sensor (7) is connected to the right side of the plug cap (10).

10. The pigging tool for oil pipelines according to claim 1, characterized in that: The stirring wheel (3) includes a support (301) and a plurality of stirring rods (302). The support (301) is circular ring-shaped, and a plurality of stirring rods (302) are connected to the outer side of the circular ring. The plurality of stirring rods (302) are evenly distributed at equal intervals along the outer circumference of the circular ring, and the power output end of the motor (4) is connected to the inside of the support (301).

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