Pipeline cleaner

Abstract

The invention belongs to the technical field of oil and gas pipelines, and particularly relates to a pipeline cleaner which comprises a discharge valve, the discharge valve is provided with a valve port, and in the process of adjusting the opening degree of the valve port, the opening degree of the discharge valve can be gradually increased in the direction close to the periphery of the valve port with the center of the valve port as a base point. Or the opening degree is gradually reduced in the peripheral direction away from the valve port by taking the center of the valve port as a base point. Before and after the opening degree of the valve port is adjusted, when high-pressure and high-speed fluid flows through the discharge valve, the high-pressure and high-speed fluid can basically keep consistent with the original fluid form, so that smooth discharge of the high-pressure and high-speed fluid can be realized, the speed of the pipeline cleaner can be conveniently and stably adjusted, and the pipeline cleaner can accurately and efficiently detect a pipeline.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas pipelines, and in particular relates to a pipeline pig. Background Art

[0002] In order to ensure the normal operation of oil and gas pipelines, it is necessary to regularly clean and inspect the pipelines. The purpose of cleaning is to clean the debris, liquid accumulation and dirt in the pipeline to improve the pipeline transportation efficiency and reduce friction loss. In addition, cleaning is often carried out at the same time as pipeline inspection. The pig is equipped with sensors to obtain data such as pipeline deformation, corrosion and cracks, and accurately locate pipeline defects, providing reliable information for later pipeline maintenance.

[0003] At present, the pig mainly relies on the pressure difference formed by its own blocking effect on the medium transported in the pipeline to drive forward. However, due to the fluctuation of pressure upstream and downstream of the pipeline, especially the large-diameter, high-pressure, high-flow rate long-distance oil and gas pipelines built in recent years, the medium flow rate has exceeded 5m / s, and the instantaneous speed may reach more than ten meters per second, making the pig's running speed not very stable. When the pig's running speed exceeds 5m / s, it is easy to have unsatisfactory signal acquisition, or even the phenomenon of no signal detection, and the pipeline detection task cannot be completed. Therefore, it is necessary to effectively control the speed of the pig so that the pig can accurately and efficiently detect the pipeline.

[0004] At present, the pig achieves real-time speed control through a discharge valve, and its principle is to adjust the discharge area of ​​the valve port of the discharge valve to change the pressure difference before and after the pig, thereby controlling the speed of the pig. The Chinese utility model patent with announcement number CN208066888U discloses an electromagnetic clutch-controlled adjustable speed pig, which uses a rotary valve as a discharge valve. Before and after the valve port opening is adjusted, the fluid morphology of the high-speed fluid will change greatly, resulting in a large fluctuation in the speed of the pig, which is not conducive to the stable speed regulation of the pig, resulting in the pig being unable to accurately and efficiently detect the pipeline. Summary of the invention

[0005] The object of the present invention is to provide a pipeline pig so that before and after the valve opening is adjusted, the high-pressure and high-speed fluid can remain basically consistent with the original fluid form when flowing through the discharge valve, thereby achieving smooth discharge of the high-pressure and high-speed fluid, facilitating the smooth adjustment of the speed of the pipeline pig, so that the pipeline pig can accurately and efficiently detect the pipeline.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention is:

[0007] A pipeline cleaning device includes a discharge valve, which has a valve port. During the process of adjusting the opening of the valve port, the discharge valve can gradually increase the opening in a peripheral direction close to the valve port with the center of the valve port as a base point, or gradually reduce the opening in a peripheral direction away from the valve port with the center of the valve port as a base point.

[0008] As an improvement, the pipeline pig also includes a collection control module and a driving mechanism communicatively connected to the collection control module; wherein the collection control module is capable of collecting speed parameters of the pipeline pig in real time, and controlling the driving mechanism to drive the relief valve to adjust the opening size of the valve port.

[0009] As a further improvement, the discharge valve includes a turntable, a plurality of connecting rods whose first ends are fixedly connected to the turntable along the circumference of the turntable, and a plurality of opening and closing leaves respectively fixedly connected to the second end of each of the connecting rods. The turntable is provided with the valve port, and the plurality of opening and closing leaves are rotatably connected to the turntable for closing the valve port. The turntable can rotate under the drive of the gear to drive each of the connecting rods to move, and each of the connecting rods drives the opening and closing leaves connected to it to rotate on the turntable to adjust the area of ​​the valve port closed by the opening and closing leaves.

[0010] As an improvement, the multiple opening and closing leaves and the multiple connecting rods are all arranged on the first side of the turntable, and the discharge valve also includes a gear ring fixedly connected to the turntable, and the gear ring is arranged on the second side of the turntable opposite to the first side.

[0011] As a further improvement, the driving mechanism includes a driving shaft and a gear arranged on the driving shaft, and the gear is meshed with the ring gear, wherein the acquisition control module can control the rotation of the driving shaft according to the acquired speed parameters to adjust the rotation angle of the driving gear, thereby adjusting the opening of the valve port.

[0012] As a further improvement, the pipeline pig further comprises a frame, and the acquisition control module comprises a plurality of mileage wheel assemblies evenly arranged along the outer circumference of the frame, for collecting mileage information of the pipeline pig.

[0013] As a further improvement, the acquisition control module also includes a computing unit that is communicatively connected to the mileage wheel assembly, and the computing unit is used to differentiate the mileage information of the pipeline cleaning device to obtain the speed, and after comparing the speed with the set speed, determine and control the rotation angle of the drive shaft of the drive mechanism.

[0014] As a further improvement, the mileage wheel assembly includes a hinge seat, a mileage wheel and a hinged rod, the hinge seat is fixedly connected to the outer surface of the frame, the first end of the hinged rod is hinged to the hinge seat, and the second end of the hinged rod is connected to the mileage wheel.

[0015] As a further improvement, the mileage wheel assembly also includes an elastic member, a support rod and a support hinge seat, the support hinge seat is adjacent to the hinge seat and is arranged side by side, the support hinge seat is fixedly connected to the outer surface of the skeleton, the elastic member is sleeved on the outer surface of the support rod, the first end of the support rod is fixedly connected to the support hinge seat, the second end of the support rod is fixedly connected to the hinge rod, and the first end and the second end of the elastic member are in contact with the hinge rod and the support hinge seat respectively.

[0016] As a further improvement, the leakage valve is a leakage valve based on an iris structure.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] By making the discharge valve gradually increase the opening degree from the center of the valve port as the base point to the peripheral direction close to the valve port, or gradually reduce the opening degree from the center of the valve port as the base point to the peripheral direction away from the valve port, so that before and after the valve port opening is adjusted, the high-speed fluid can basically keep the same shape as the original fluid when flowing through the discharge valve, so that the high-pressure and high-speed fluid can be discharged smoothly, which is convenient for smoothly adjusting the speed of the pipeline pig, so that the pipeline pig can accurately and efficiently detect the pipeline; the valve port of the discharge valve has only one flow surface and the flow surface is continuous, which is convenient for analysis and calculation through modeling; when the fluid flows through the discharge valve based on the iris structure, the collision with the valve body is small, the head loss is small, and the speed of the pipeline pig is convenient for smoothly adjusting. In addition, since the valve port changes relatively smoothly during the process of adjusting the valve port opening, the turbulence and vibration formed by the high-speed fluid after passing through the valve port are very small.

[0019] The present invention includes a driving mechanism including a driving shaft and a gear arranged on the driving shaft, and the gear is meshed with a gear ring, and the acquisition control module can control the rotation of the driving shaft according to the collected speed parameters to adjust the rotation angle of the driving gear, thereby adjusting the opening of the valve port, and can accurately control the opening of the valve port through the driving mechanism driving gear, thereby accurately adjusting the speed of the pipeline pig, so that the pipeline pig can accurately and efficiently detect the pipeline. In addition, by adjusting the opening of the discharge valve by means of gear meshing, the discharge valve structure can be made more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of a pipeline pig according to an embodiment of the present invention;

[0021] Figure 2 is another three-dimensional structural schematic diagram of a pipeline pig according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the three-dimensional structure of a discharge valve according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of a three-dimensional structure of a discharge valve in a partially open state according to an embodiment of the present invention;

[0024] Figure 5 is a schematic structural diagram of a relief valve in a fully open state according to an embodiment of the present invention;

[0025] Figure 6 1 is a schematic structural diagram of a relief valve in a fully closed state according to an embodiment of the present invention.

[0026] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific implementation methods and drawings. The drawings are only for illustrative purposes and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that the terms "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, 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 used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. "Connected" can mean directly connected or connected through a medium. The terms "first" and "second" are used only for reference and do not indicate importance.

[0029] like Figure 1 as well as Figure 2As shown, the pipeline cleaning device 100 described in the present invention includes a skeleton 5, a first support component a fixedly connected to the first end of the skeleton 5, and a second support component b fixedly connected to the second end of the skeleton 5, wherein the first support component a and the second support component b are used to support the pipeline cleaning device 100 in the pipeline and isolate the fluid.

[0030] In one or more embodiments, the skeleton 5 may be configured in a cylindrical shape. The skeleton 5 has an inner cavity, and both the first end and the second end of the skeleton 5 have openings for flow.

[0031] In one or more embodiments, the first support assembly a includes: a first leather cup 7 which is arranged in sequence from the second end to the first end of the skeleton 5 at the first end, a gasket group 8 abutting against the first leather cup 7, a straight plate sealing disk 6 abutting against the gasket group 8, and a front baffle plate 9 abutting against the outer surface of the straight plate sealing disk 6, wherein the first leather cup 7, the gasket group 8 and the straight plate sealing disk 6 are all sleeved on the outer surface of the first end of the skeleton 5, the front baffle plate 9 abuts against the opening of the first end of the skeleton 5, and the first leather cup 7, the gasket group 8, the straight plate sealing disk 6 and the front baffle plate 9 are all fixed to the first end of the skeleton 5 by screws. The straight plate sealing disc 6 can be configured in an annular shape, and its radial rigidity is relatively large, so that the pipeline pig 100 can be centered in the pipeline and can isolate the fluid. The pad group 8 can include one or more pads, which are arranged between the first leather cup 7 and the straight plate sealing disc 6, and can separate the straight plate sealing disc 6 from the first leather cup 7. During the movement of the pipeline pig 100, the straight plate sealing disc 6 is prevented from moving or tilting in the direction close to the first leather cup 7, thereby ensuring the stability and sealing of the pipeline pig 100. The first leather cup 7 can make the pipeline pig 100 in close contact with the inner wall of the pipeline, thereby ensuring the stability of the pipeline pig 100.

[0032] In one or more embodiments, the skeleton 5 is provided with a first ridge 51 protruding from the outer surface along the circumference of its first end. Optionally, the first ridge 51 is constructed in a ring shape, and through holes are provided on the first ridge 51, the first leather cup 7, the gasket group 8, the straight plate sealing disk 6 and the front baffle 9. The bolts pass through the through holes provided on the front baffle 9, the straight plate sealing disk 6, the gasket group 8, the first leather cup 7 and the first ridge 51 in turn and are threadedly connected with nuts to fix the front baffle 9, the straight plate sealing disk 6, the gasket group 8, the first leather cup 7 and the skeleton 5.

[0033] In one or more embodiments, a spacer block group 8 may also be disposed between the first leather cup 7 and the first ridge 51 .

[0034] In one or more embodiments, the outer surface of the front baffle 9 is provided with an anti-collision ring 93 protruding from the outer surface thereof, which can be used to prevent the pipeline pig 100 from directly colliding with other objects during the movement of the pipeline pig 100 .

[0035] In one or more embodiments, the anti-collision ring 93 may be provided with a ring opening for connecting with a hook, so as to facilitate taking the pipeline pig 100 out of the pipeline by using the hook.

[0036] In one or more embodiments, the first support component b includes: a second leather cup 71, a block group 8 abutting against the second leather cup 71, a third leather cup 72 abutting against the block group 8, and a rear baffle plate 91 abutting against the outer surface of the third leather cup 72, which are arranged in sequence from the first end to the second end of the skeleton 5, wherein the second leather cup 71, the block group 8 and the third leather cup 72 are all sleeved on the outer surface of the second end of the skeleton 5, the rear baffle plate 91 abuts against the opening of the second end of the skeleton 5, and the second leather cup 71, the block group 8, the third leather cup 72, and the rear baffle plate 91 are all fixed to the second end of the skeleton 5 by screws.

[0037] In one or more embodiments, the skeleton 5 is provided with a second ridge 52 protruding from the outer surface along the circumference of its second end, and through holes are provided on the second ridge 52, the second leather cup 71, the block group 8, the third leather cup 72 and the rear baffle 91. The bolts pass through the through holes provided on the rear baffle 91, the third leather cup 72, the block group 8, the second leather cup 71 and the second ridge 52 in sequence and are threadedly connected with nuts to fix the second leather cup 71, the block group 8, the third leather cup 72 and the rear baffle 91 to the skeleton 5.

[0038] In one or more embodiments, flow holes are opened in the center of the front baffle plate 9 and the rear baffle plate 91, so that the fluid enters the inner cavity of the frame 1 through the flow holes on the rear baffle plate 91 and then flows out through the flow holes on the front baffle plate 9.

[0039] The pipeline pig described in the present invention also includes a discharge valve 3, which is arranged in the inner cavity of the skeleton 5. The fluid enters the inner cavity of the skeleton 1 through the flow hole on the rear baffle 91 and flows through the discharge valve 3 in the inner cavity. If the pressure difference of the fluid medium increases, the speed of the pipeline pig 100 will also increase accordingly. At this time, it is necessary to increase the opening of the discharge valve 3 to reduce the pressure difference of the fluid medium, thereby reducing the speed of the pipeline pig 100. Conversely, if the pressure difference of the fluid medium decreases, the speed of the pipeline pig 100 will also decrease accordingly. At this time, it is necessary to reduce the opening of the discharge valve 3 to increase the speed of the pipeline pig 100, so as to maintain the speed of the pipeline pig 100 at the set speed, so as to improve the efficiency of the pipeline pig 100 in cleaning and detecting in the pipeline.

[0040] The discharge valve 3 of the present invention has a valve port 321, and optionally, the valve port 321 is located at the center of the discharge valve 3. In the process of adjusting the opening of the valve port 321, the discharge valve 3 can gradually increase the opening toward the peripheral direction close to the valve port 321 with the center of the valve port 321 as the base point, or gradually reduce the opening toward the peripheral direction away from the valve port 321 with the center of the valve port 321 as the base point, wherein the "opening" of the valve port 321 is the area of ​​the valve port 321 used for flow.

[0041] In one or more embodiments, the discharge valve 3 is a discharge valve based on an iris structure. Compared with the use of a rotary valve or other traditional structure valves in the pipeline pig, in the process of adjusting the opening, the discharge valve 3 can always take the center of the valve port 321 as the base point to gradually increase the opening toward the peripheral direction close to the valve port 321, or take the center of the valve port 321 as the base point to gradually reduce the opening toward the peripheral direction away from the valve port 321, so that before and after adjusting the opening of the valve port 321, the high-speed fluid can basically keep the same shape as the original fluid when flowing through the discharge valve 3, so that the high-pressure and high-speed fluid can be smoothly discharged, which is convenient for smoothly adjusting the speed of the pipeline pig 100, so that the pipeline pig 100 can accurately and efficiently detect the pipeline. The valve port 321 of the discharge valve 3 has only one flow surface and the flow surface is continuous, which is convenient for analysis and calculation through modeling.

[0042] Compared with using a rotary valve or other valves in the pipeline pig 100, when the fluid flows through the iris-based discharge valve, the collision with the valve body is small, the head loss is small, and the speed of the pipeline pig 100 can be smoothly adjusted. In addition, since the valve port 321 changes relatively smoothly during the process of adjusting the opening of the valve port 321, the turbulence and vibration formed by the high-speed fluid after passing through the valve port 321 are very small.

[0043] In one or more embodiments, the pipeline pig 100 described in the present invention also includes a collection control module 1 and a driving mechanism 2 that is communicatively connected to the collection control module 1, wherein the collection control module 1 can collect speed parameters of the pipeline pig 100 in real time, and control the driving mechanism 2 to drive the drain valve 3 to adjust the opening size of the valve port 321.

[0044] like Figure 2 , Figure 3 as well as Figure 4As shown, in one or more embodiments, the discharge valve 3 includes a valve body 31, a rotating disk 32, a plurality of connecting rods 34 whose first ends are arranged along the circumference of the rotating disk 32 and fixedly connected to the rotating disk 32, and a plurality of opening and closing leaves 33 fixedly connected to the second end of each connecting rod 34. The valve body 31 can be configured as a cylinder and have a cavity, and the valve body 31 is provided with a groove (not shown) along its inner wall, wherein the rotating disk 32 is rotatably arranged in the groove in the valve body 31. A valve port 321 is provided on the rotating disk 32, and in an optional embodiment, the valve port 321 is provided in the center of the rotating disk 32. In an optional embodiment, the valve port 321 can be circular. In an optional embodiment, the first end of each connecting rod 34 is fixedly connected to the outer periphery of the rotating disk 32. The plurality of opening and closing leaves 33 are rotatably connected to the rotating disk 32 to close the valve port 321. The rotating disk 32 can rotate to drive each connecting rod 34 to move, and each connecting rod 34 drives the opening and closing leaf 33 connected to it to rotate on the rotating disk 32 to adjust the area of ​​the valve port 321 closed by the opening and closing leaf 33. Figure 4 The opening and closing leaf 33 of the relief valve 3 shown partially closes the area of ​​the valve port 321 .

[0045] For example, each connecting rod 34 is connected to a hinge leaf 33, and the number of connecting rods 34 is the same as that of hinge leaves 33. A cylindrical pin is provided at the first end of the connecting rod 34, and the connecting rod 34 is connected to the hinge leaf 33 through the cylindrical pin. A cylindrical pin is also provided at the second end of the connecting rod 34, and the connecting rod 34 is connected to the pin hole provided on the rotating disk 32 through the cylindrical pin. The rotating disk 32 may be provided with a plurality of cylindrical pins arranged along the circumferential direction, and each cylindrical pin is respectively connected to a hinge leaf 33, so that each hinge leaf 33 can rotate on the corresponding cylindrical pin, so that the hinge leaf 33 is rotatably connected to the rotating disk 32.

[0046] In one or more embodiments, a plurality of hinge leaves 33 and a plurality of connecting rods 34 are disposed on a first side of the rotating disk 32, and the discharge valve 3 further comprises a gear ring 35 meshing with the gear 4, the gear ring 35 being disposed on a second side of the rotating disk 32 opposite to the first side and being fixedly connected to the rotating disk 32. Optionally, the rotating disk 32 and the gear ring 35 have the same center.

[0047] In one or more embodiments, the drive mechanism 2 includes a drive shaft and a gear 4 disposed on the drive shaft, the gear 4 meshing with the gear ring 35, wherein the acquisition control module 1 can control the rotation of the drive shaft according to the acquired speed parameter to adjust the rotation angle of the drive gear 4, thereby adjusting the opening of the valve port 321. The drive mechanism 2 is disposed in the skeleton 5. For example, the drive mechanism 2 is fixed on the motor frame 21, and the motor frame 21 is fixedly connected to the inside of the skeleton 5 by a screw. Optionally, the gear 4 is connected to the drive shaft of the drive mechanism 2 through an axial hole. Optionally, the drive mechanism 2 can be a servo motor.

[0048] The present invention includes a driving mechanism 2 including a driving shaft and a gear 4 arranged on the driving shaft, the gear 4 is meshed with a ring gear 35, the ring gear 35 can drive the turntable 32 to rotate to drive the connecting rod 34 to move, and the connecting rod 34 drives the opening and closing leaf 33 to rotate around the turntable 32 to adjust the opening of the valve port 321, and the acquisition control module 1 can control the rotation of the driving shaft according to the collected speed parameters to adjust the rotation angle of the driving gear 4, thereby adjusting the opening of the valve port 321, and can accurately control the opening of the valve port 321 through the driving mechanism 2 driving gear 4, and then can accurately adjust the speed of the pipeline pig 100, so that the pipeline pig 100 can accurately and efficiently detect the pipeline. In addition, by adjusting the opening of the discharge valve 3 by means of gear meshing, the structure of the discharge valve 3 can be made more stable.

[0049] In one or more embodiments, a plurality of hinge leaves 33 are evenly arranged along the circumference of the rotating disk 32. Optionally, the present invention includes five hinge leaves, and the five hinge leaves 33 are evenly arranged along the circumference of the rotating disk 32.

[0050] When the gear 4 rotates under the drive of the driving mechanism 2, the gear ring 35 can drive the rotating disk 32 to rotate, and the rotation of the rotating disk 32 can drive the connecting rod to pull or push the opening and closing leaves 33 to rotate on the rotating disk 32. After each opening and closing leaf 33 rotates a certain angle, the opening of the valve port 321 can be changed, thereby achieving the purpose of controlling the size of the flow area. Figure 5 As shown, the relief valve 3 is in a fully open state, and the flow area is the area of ​​the valve port 321. Figure 6 As shown, the relief valve 3 is in a fully closed state, and the flow area is 0.

[0051] like Figure 1 as well as Figure 2 As shown, in one or more embodiments, the acquisition control module 1 includes multiple mileage wheel assemblies 11, and the mileage wheel assemblies 11 are used to collect mileage information of the pipeline cleaning device 100. For example, an encoder is provided in the mileage wheel 112 of the mileage wheel assembly 11, and the number of rotations of the mileage wheel can be measured by the encoder. The mileage wheel assemblies 11 are evenly arranged along the outer circumference of the skeleton 5.

[0052] A sensor may be provided inside the skeleton 5 to detect data such as pipeline wear, deformation, corrosion, and cracks and to accurately locate pipeline defects. The speed of the sensor needs to be maintained at a set speed (for example, 3.5 m / s) to efficiently and accurately detect pipeline wear. If the speed of the sensor is too high, the detected data will be inaccurate or even unable to be detected normally. Correspondingly, if the speed of the sensor is low, the detected data will also be inaccurate and the detection efficiency will be low.

[0053] The acquisition control module 1 also includes a computing unit (not shown in the figure), and the mileage wheel assembly 11 is in communication connection with the computing unit, and the computing unit is used to differentiate the mileage information of the pipeline pig 100 to obtain the speed, and after comparing the speed with the set speed, determine and control the rotation angle of the drive shaft of the drive mechanism 2. Optionally, the computing unit can be integrated in the drive mechanism 2, and the computing unit is in communication connection with the drive mechanism 2.

[0054] In one or more embodiments, the mileage wheel assembly 11 includes a hinge seat 111, a mileage wheel 112, and a hinge rod 113, wherein the hinge seat 111 is fixedly connected to the outer surface of the frame 5, the first end of the hinge rod 113 is hinged to the hinge seat 111, and the second end of the hinge rod 113 is connected to the mileage wheel 112. The distance between the farthest point of the rim of the mileage wheel 112 and the axis of the pipeline pig 100 is slightly greater than the maximum diameter of the first leather cup 7, the second leather cup 71, and the third leather cup 72.

[0055] In one or more embodiments, the mileage wheel assembly 11 also includes an elastic member 114, a support rod 115 and a support hinge seat 116. The support hinge seat 116 is adjacent to the hinge seat 111 and arranged side by side. The support hinge seat 116 is fixedly connected to the outer surface of the skeleton 5. The elastic member 114 is sleeved on the outer surface of the support rod 115 and extends throughout the entire support rod 115. The first end of the support rod 115 is fixedly connected to the support hinge seat 116, and the second end of the support rod 115 is fixedly connected to the hinge rod 113. The first end of the elastic member 114 contacts the hinge rod 113, and the second end of the elastic member 114 contacts the support hinge seat 116. The elastic member 114 and the support rod 115 can apply a thrust to the hinge rod 113 in a direction away from the axis of the pipeline pig 100, so that the mileage wheel 112 is pressed against the inner wall of the pipeline, thereby keeping the pipeline pig 100 stable in the pipeline.

[0056] The working process of the pipeline cleaning device 100 according to the present invention is briefly described below. After the pipeline cleaning device 100 according to the present invention enters the pipeline, it is supported in the pipeline by various leather cups to maintain stability, and moves under the action of the pressure difference between the front and rear media. The fluid enters the inner cavity of the skeleton through the flow hole on the rear baffle, flows through the drain valve 3 in the inner cavity, and flows out from the flow hole on the front baffle.

[0057] If the speed of the pipeline pig 100 is greater than the set speed, the acquisition control module 1 determines the speed information of the pipeline pig 100, and controls the rotation angle of the driving shaft of the driving mechanism 2 according to the speed information. The driving shaft of the driving mechanism 2 rotates clockwise according to the rotation angle to rotate through the driving gear 4 to drive the turntable 32 to rotate, and the turntable 32 then drives each connecting rod 34 to move, and each connecting rod 34 drives the opening and closing leaves 33 connected to each other to rotate on the turntable 32 to increase the area of ​​the valve port 321 closed by the opening and closing leaves 33. In the process of increasing the opening of the valve port 321, each opening and closing leaf 33 can be driven by the connecting rod 34 to rotate around the turntable 32 (for example, clockwise) to gradually increase the opening with the center of the valve port 321 as the base point toward the outer peripheral direction of the valve port 321, thereby not changing the shape of the high-speed fluid and achieving stable speed regulation.

[0058] If the speed of the pipeline pig 100 is less than the set speed, the operating condition is similar to the above, but the opening of the valve port 321 needs to be reduced, and this operating condition will not be described in detail.

[0059] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipeline cleaning device, comprising a discharge valve (3), wherein the discharge valve (3) has a valve port (321), and in the process of adjusting the opening of the valve port (321), the discharge valve (3) can gradually increase the opening in a direction approaching the periphery of the valve port (321) with the center of the valve port (321) as a base point, or gradually reduce the opening in a direction away from the periphery of the valve port (321) with the center of the valve port (321) as a base point.

2. The pipeline pig according to claim 1, characterized in that: The pipeline pig further comprises a collection control module (1) and a driving mechanism (2) communicatively connected to the collection control module (1); The acquisition control module (1) is capable of acquiring the speed parameters of the pipeline pig in real time, and controlling the driving mechanism (2) to drive the discharge valve (3) to adjust the opening size of the valve port (321).

3. The pipeline pig according to claim 3, characterized in that: The discharge valve (3) comprises a rotating disk (32), a plurality of connecting rods (34) whose first ends are arranged along the circumference of the rotating disk (32) and are fixedly connected to the rotating disk (32), and a plurality of opening and closing leaves (33) respectively fixedly connected to the second end of each connecting rod (34). The valve port (321) is provided on the rotating disk (32). The plurality of hinge leaves (33) are rotatably connected to the rotating disk (32). The rotating disk (32) is rotatable to drive each of the connecting rods (34) to move, and each of the connecting rods (34) drives the opening and closing leaves (33) connected thereto to rotate on the rotating disk (32) to adjust the area of ​​the valve opening (321) closed by the opening and closing leaves (33).

4. The pipeline pig according to claim 4, characterized in that: The plurality of hinge leaves (33) and the plurality of connecting rods (34) are arranged on a first side of the rotating disk (32). The discharge valve (3) further comprises a gear ring (35) fixedly connected to the rotating disk (32), wherein the gear ring (35) is arranged on a second side of the rotating disk (32) opposite to the first side.

5. The pipeline pig according to claim 2, characterized in that: The driving mechanism (2) comprises a driving shaft and a gear (4) arranged on the driving shaft, wherein the gear (4) meshes with the gear ring (35). The acquisition control module (1) is capable of controlling the rotation of the drive shaft according to the acquired speed parameters. The rotation angle of the driving gear (4) is adjusted, thereby adjusting the opening of the valve port (321).

6. The pipeline pig according to claim 5, characterized in that: The pipeline pig also includes a frame (5), and the acquisition control module (1) includes a plurality of mileage wheel assemblies (11) evenly arranged along the outer circumference of the frame (5) and used for collecting mileage information of the pipeline pig.

7. The pipeline pig according to claim 6, characterized in that: The acquisition control module (1) further comprises a computing unit which is in communication connection with the mileage wheel assembly (11). The calculation unit is used to obtain the speed parameter after differentiating the mileage information of the pipeline pig, and determine and control the rotation angle of the drive shaft after comparing the speed with a set speed.

8. The pipeline pig according to claim 6, characterized in that: The mileage wheel assembly (11) comprises a hinge seat (111), a mileage wheel (112) and a hinge rod (113); the hinge seat (111) is fixedly connected to the outer surface of the frame (5); the first end of the hinge rod (113) is hinged to the hinge seat (111); and the second end of the hinge rod (113) is connected to the mileage wheel (112).

9. The pipeline pig according to claim 8, characterized in that: The mileage wheel assembly also includes an elastic member (114), a support rod (115) and a support hinge seat (116); the support hinge seat (116) is adjacent to and arranged side by side with the hinge seat (111); the support hinge seat (116) is fixedly connected to the outer surface of the frame (5); the elastic member (114) is sleeved on the outer surface of the support rod (115); the first end of the support rod (115) is fixedly connected to the support hinge seat (116); the second end of the support rod (115) is fixedly connected to the hinge rod (116); the first end and the second end of the elastic member (114) are in contact with the hinge rod (116) and the support hinge seat (116), respectively.

10. The pipeline pig according to claim 1, characterized in that: The discharge valve (3) is a discharge valve based on an iris structure.

Images