Intelligent internal detector variable diameter auxiliary passing device for oil and gas pipeline

Abstract

An oil and gas pipeline intelligent internal detector variable diameter auxiliary passing device belongs to the pipeline detection field. The passing device is mainly composed of a main shell support and a connecting unit connected with the main shell support. The connecting unit is composed of a secondary shell support and a variable diameter connecting piece connected in sequence. The main shell support is connected with the oil and gas pipeline intelligent internal detector through a force sensor connecting device. The structure can realize pipeline positioning, pipeline internal odometer state observation, overall state observation of the variable diameter auxiliary passing device in the pipeline, temperature and pressure measurement, traction of the pipeline internal detector to ensure that the traction steel wire rope does not break, solve the problem of no auxiliary passing device, improve work efficiency, and also protect the equipment from repeated impact due to the breakage of the steel wire rope and damage to the equipment caused by excessive tension.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of pipeline detection, and particularly relates to a variable-diameter auxiliary passing device of an intelligent in-pipeline detector for oil and gas pipelines. BACKGROUND

[0002] The in-pipeline detector, also known as a pipeline doctor in the industry, uses advanced non-destructive testing technology, pipeline robot technology and data mining technology to quickly scan pipeline defects over a long distance, evaluate the health status of the pipeline based on the defect data, and draw a pipeline map, thereby providing protection for pipeline safety operation and digital construction. The in-pipeline detection technology can determine the corrosion and crack defects of the pipeline and ensure the long-term operation of the pipeline. Existing intelligent in-pipeline detectors for oil and gas pipelines are pulled by a traction steel wire rope, and once the traction steel wire rope is broken, the intelligent in-pipeline detector will be left in the pipeline and cannot work normally. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the present application is to provide a variable-diameter auxiliary passing device of an intelligent in-pipeline detector for oil and gas pipelines.

[0004] The technical scheme adopted by the present application is as follows: a variable-diameter auxiliary passing device of an intelligent in-pipeline detector for oil and gas pipelines, which comprises a main shell support and at least two connecting units, the connecting unit comprises a secondary shell support, the secondary shell support is connected with the main shell support through a variable-diameter connecting piece for changing the length of the connecting unit, the secondary shell support is fixedly connected with one end of an auxiliary wheel support, the other end of the auxiliary wheel support is installed on the auxiliary wheel support through a positioning baffle bearing, a first spring and a second spring for compensating the displacement of the auxiliary wheel are respectively arranged on the two sides of the auxiliary wheel support, the first spring is pressed between the one side of the auxiliary wheel support and the secondary shell support, the second spring is pressed between the other side of the auxiliary wheel support and the secondary shell support, and the angle is adjusted at any time to adapt to the direction of the pipeline during the movement of the auxiliary wheel along the inner wall of the oil and gas pipeline.

[0005] In the above scheme, the main shell support of the variable-diameter auxiliary passing device is connected with the intelligent in-pipeline detector for oil and gas pipelines through a force sensor connecting device.

[0006] In the above scheme, the force sensor connecting device comprises a force value sensor, one end of the force value sensor is connected with a first connector, and the other end of the force value sensor is connected with a third connector through a second connector.

[0007] In the above scheme, the second connector comprises a connecting end with an external thread connected with one end of the force value sensor, a bolt head and a rotary joint, the rotary joint is inserted into a positioning groove of the second connector and is rotationally positioned in the positioning groove, and then is fixed by a bolt.

[0008] In the scheme, the variable diameter connector includes a variable diameter connector head, the variable diameter connector head is sleeved with a first fine adjustment member and a second fine adjustment member, and is fixed through a fixed neck device inserted into a connecting hole of the second fine adjustment member, the connecting hole is arranged along the axial direction of the second fine adjustment member in sequence, and the distance between the second fine adjustment member and the second variable diameter connector head is changed by adjusting the connecting position of the connecting hole and the connecting hole on the second variable diameter connector head; the first fine adjustment member adjusts the distance between the first variable diameter connector head and the second fine adjustment member through a rotating adjusting screw.

[0009] In the scheme, the fixed neck device includes a telescopic positioning head with internal threads, a telescopic rod with external threads, a telescopic rod sleeve with internal threads and a dead plug with external threads, one end of the telescopic rod is inserted into the internal threads of the telescopic positioning head and connected together, the telescopic rod sleeve is sleeved with the other end of the telescopic positioning head, the telescopic rod sleeve and the dead plug are fixedly connected through threads, and a spring is arranged between the telescopic positioning head and the telescopic rod sleeve, so that the telescopic positioning head can be telescoped, positioned and locked.

[0010] In the scheme, the first fine adjustment member includes a support frame composed of a first support rod, a second support rod, a third support rod and a fourth support rod, the first support rod and the second support rod are connected through a first nut with first internal hole threads, the first nut is connected with one end of the screw rod with left-handed threads, the third support rod and the fourth support rod are connected through a second nut with second internal hole threads, and the second nut is connected with one end of the screw rod with right-handed threads.

[0011] In the scheme, the camera, the temperature sensor and the pressure sensor are mounted on the auxiliary housing support.

[0012] In the scheme, the connecting unit is cross-shaped and connected to the main housing support.

[0013] In the scheme, the connecting unit is cross-shaped and connected to the main housing support.

[0014] In the scheme, the main housing is provided with a battery, a wire, a storage card and a memory chip.

[0015] The beneficial effects of the present application are: the oil and gas pipeline intelligent internal detector variable diameter auxiliary passing device, the main shell support and the connecting unit connected therewith, the connecting unit is composed of a secondary shell support and a variable diameter connecting piece connected in sequence, and the main shell support is connected with the oil and gas pipeline intelligent internal detector through the force sensor connecting device. The structure can realize pipeline positioning, pipeline viewing of the mileage wheel state, pipeline viewing of the overall state of the variable diameter auxiliary passing device, temperature and pressure measurement, traction of the pipeline detector to ensure that the traction steel wire rope does not break, and filling of the auxiliary passing device to improve work efficiency. At the same time, the impact on the equipment caused by the repeated breaking of the steel wire rope is protected, and the damage to the equipment caused by excessive tension (the equipment is very expensive, one million to several million). BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a structural schematic diagram of the existing oil and gas pipeline intelligent internal detector auxiliary device.

[0018] Figure 2 It is a structural schematic diagram of the oil and gas pipeline intelligent internal detector variable diameter auxiliary passing device in the embodiment of the present application.

[0019] Figure 3 It is a structural schematic diagram of the main body of the variable diameter auxiliary passing device in the embodiment of the present application.

[0020] Figure 4 It is a structural schematic diagram of the variable diameter connecting piece in the embodiment of the present application.

[0021] Figure 5 It is a structural schematic diagram of the fixed locking device in the embodiment of the present application.

[0022] Figure 6 It is a structural schematic diagram of the force sensor connecting device in the embodiment of the present application.

[0023] Figure 7 It is a structural schematic diagram of the second joint in the embodiment of the present application.

[0024] Figure 8 It is a structural schematic diagram of the third joint in the embodiment of the present application.

[0025] Figure 9 It is a structural schematic diagram of the cross-shaped structure in the embodiment of the present application.

[0026] Figure 10A schematic diagram of the rice-shaped structure in the embodiment of the present application;

[0027] Figure 11 A schematic diagram of the multi-grab-shaped structure in the embodiment of the present application;

[0028] The serial number in the figure is explained as follows: 1 second spring, 2 auxiliary wheel support, 3 positioning baffle and bearing, 4 auxiliary wheel, 5 first spring, 6 auxiliary housing support, 7 variable-diameter connecting piece, 7-1 first variable-diameter connecting head, 7-2 first fine adjustment piece, 7-3 second fine adjustment piece, 7-4 second variable-diameter connecting head, 7-5 fixed locking device, 7-5-1 telescopic positioning head, 7-5-2 telescopic rod, telescopic rod sleeve 7-5-3, dead plug 7-5-4, 8 connecting hole, 9 main housing support, 10 positioner, 11 camera, 12 force sensor connecting device, 12-1 first joint, 12-2 force sensor, 12-3 second joint, 12-3-1 connecting end, 12-3-2 bolt head, 12-3-3 rotary joint, 12-4 third joint, 12-4-1 positioning groove, 12-4-2 connecting end, 13 temperature sensor, 14 pressure sensor, 15 3D elbow pipeline, 16 steel wire rope, 17 oil and gas pipeline intelligent inner detector, 18 variable-diameter auxiliary passing device, 19 power system. DETAILED DESCRIPTION

[0029] The above objects, features and advantages of the present application will become more apparent from the following detailed description of the present application taken in conjunction with the accompanying drawings, in which: Figures 1-11 and specific embodiments of the present application. Example 1

[0030] The oil and gas pipeline intelligent internal detector variable diameter auxiliary passing device used in the embodiment comprises a main body structure including four connecting units and a main shell support 9, and the four connecting units are connected in a cross shape on the main shell support 9 through bolts and nuts. The connecting unit in the embodiment comprises a secondary shell support 6, which is connected with the main shell support 9 internally provided with a positioner 10 through a variable diameter connecting piece 7. Two connecting holes 8 are distributed at the two ends of the main shell support 9 in the radial direction, and other variable diameter auxiliary passing devices 18 can be connected through the connecting holes 8. The end 6 of the secondary shell support 6 is connected with an auxiliary wheel 4 through bolts and nuts, the auxiliary wheel 4 is connected with an auxiliary wheel support 2 through a positioning baffle bearing 3, the auxiliary wheel support 2 is provided with a first spring 5 and a second spring 1, the first spring 5 is tightly pressed between one side of the auxiliary wheel support 2 and the secondary shell support 6, and the second spring 1 is tightly pressed between the other side of the auxiliary wheel support 2 and the secondary shell support 6, so as to compensate for the displacement, tension and pressure of the auxiliary wheel 4. A camera 11 is installed on the main body of the secondary shell support 6, and a temperature sensor 13 and a pressure sensor 14 are installed on the main body of the secondary shell support 6. The main shell support is internally provided with a battery, a storage card and a memory chip, the memory chip is connected with the storage card, and the memory chip is also connected with the camera 11, the temperature sensor 13 and the pressure sensor 14.

[0031] The variable diameter connecting piece 7 of the embodiment comprises a first variable diameter connecting head 7-1 connected with the secondary shell support 6, one end of the first variable diameter connecting head 7-1 is fixedly connected with a first supporting rod and a third supporting rod constituting a first fine adjustment piece 7-2, the first supporting rod and a second supporting rod are connected with a first nut respectively, the third supporting rod and a fourth supporting rod are connected with a second nut respectively, a left-hand thread on the upper end of a screw rod is inserted into the inner thread hole of the first nut and screwed with the inner thread hole of the first nut, and a right-hand thread on the lower end of the screw rod is inserted into the second nut and screwed with the inner thread hole of the second nut. The second supporting rod and the fourth supporting rod are fixedly connected on a second fine adjustment piece 7-3 respectively. The distance between the first supporting rod and the third supporting rod and the distance between the third supporting rod and the fourth supporting rod can be adjusted by rotating the screw rod, so as to play a fine adjustment role.

[0032] The first fine adjustment member 7-2 is sleeved with the second fine adjustment member 7-3, and is fixed by inserting the fixed neck device 7-5 in the connecting hole of the second fine adjustment member 7-3. The connecting hole is arranged axially along the second fine adjustment member 7-3, and the distance between the second fine adjustment member 7-3 and the second variable diameter connecting joint 7-4 is changed by adjusting the connecting position of the connecting hole and the connecting hole on the variable diameter connecting joint 7-4; the distance between the first variable diameter connecting joint 7-1 and the second fine adjustment member 7-3 is adjusted by rotating the screw rod of the first fine adjustment member 7-2. The fixed neck device 7-5 used in the embodiment includes a telescopic positioning head 7-5-1, a telescopic rod 7-5-2, a telescopic rod sleeve 7-5-3 and a dead plug 7-5-4, wherein one end of the telescopic rod 7-5-2 is inserted into the telescopic positioning head 7-5-1 and connected with the inner thread of the telescopic positioning head 7-5-1 through the outer thread, the other end of the telescopic positioning head 7-5-1 is sleeved with the telescopic rod sleeve 7-5-3, and the inner thread of the telescopic rod sleeve 7-5-3 is fixedly connected with the outer thread of the dead plug 7-5-4. A spring for telescoping, positioning and locking is also sleeved between the lower boss of the telescopic positioning head 7-5-1 and the lower boss of the telescopic rod sleeve 7-5-3.

[0033] The main shell support 9 of the variable diameter auxiliary passing device 18 of the embodiment is connected with the oil and gas pipeline intelligent internal detector 17 through the force sensor connecting device 12. The force sensor connecting device 12 of the embodiment includes a force value sensor 12-2, one end of the force value sensor 12-2 is inserted into the first joint 12-1, the force value sensor 12-2 is connected with the connecting end 12-3-1 with internal thread of the second joint 12-3, the second joint 12-3 is connected with the rotary joint 12-3-3 through the bolt joint 12-3-2 (such as four-sided bolt head or six-sided bolt head), the rotary joint 12-3-3 is inserted into the positioning groove 12-4-1 of the third joint 12-4, and the third joint 12-4 is connected with the main shell support 9 through the connecting end 12-4-2 with internal thread.

[0034] In the embodiment, a plurality of main body structures can be connected to adapt to different pipeline requirements.

[0035] In the embodiment, the variable diameter auxiliary passing device 18 is placed in the 3D elbow (90°) pipeline 15, the front end of the connecting hole 8 is connected with the steel wire rope 16, the rear end of the connecting hole 8 is connected with the front end of the oil and gas pipeline intelligent internal detector 17, the motor of the power system 19 is rotated to drive the steel wire rope 16 to pull the oil and gas pipeline intelligent internal detector 17 and the variable diameter auxiliary passing device 18 connected therewith to pass through the 3D elbow pipeline, the power system is started, the force value sensor, the temperature sensor and the camera monitoring system are watched, and the system is ready to stop at any time, and if there is no safety hazard, the power system is stopped.

[0036] The working principle of the oil and gas pipeline intelligent internal detector variable diameter auxiliary passing device used in the embodiment is as follows:

[0037] By replacing and adjusting the variable connecting piece 7, the variable-diameter auxiliary passing device 18 can meet the pulling test of different diameter inner detectors. By connecting a plurality of variable-diameter auxiliary passing devices 18, the movement speed of the intelligent inner detector of the gasoline pipeline can be adjusted to uniform speed traction. By watching the force value sensor, temperature sensor and camera monitoring system, the intelligent inner detector of the gasoline pipeline can be positioned and tracked.

[0038] The force value sensor sends a signal to realize the over-force value alarm, and the temperature sensor senses the pipeline temperature to realize the over-temperature alarm. The auxiliary wheel (mileage wheel) lock alarm is realized by observing the camera monitoring system to watch whether each auxiliary wheel (mileage wheel) rotates. When the tester alarms, the program stops running and the power system is cut off. Embodiment 2

[0039] The difference between this embodiment and embodiment 1 is that the main body structure is in the shape of a rice character, and the specific structure is that a connecting joint in the shape of a rice character is arranged on the main shell support 9, and each connecting joint is connected with a connecting unit. The structure of the connecting unit is consistent with that of the connecting unit in embodiment 1, and will not be repeated here. Embodiment 3

[0040] The difference between this embodiment and embodiment 1 is that the main body structure is in the shape of a rice character, and the specific structure is that a connecting joint in the shape of a rice character is arranged on the main shell support 9, and each connecting joint is connected with a connecting unit. The structure of the connecting unit is consistent with that of the connecting unit in embodiment 1, and will not be repeated here.

[0041] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A variable diameter assisted passage device for intelligent in-line inspection of oil and gas pipelines, characterized in that, The auxiliary passing device (18) comprises a main shell support (9) and at least four connecting units, the connecting unit comprises a secondary shell support (6), the secondary shell support (6) is connected with the main shell support (9) through a variable-diameter connecting piece (7) for changing the diameter length of the connecting unit; the secondary shell support (6) is fixedly connected with one end of an auxiliary wheel support (2), the other end of the auxiliary wheel support (2) is provided with an auxiliary wheel (4) through a positioning baffle bearing (3), and the auxiliary wheel support (2) is provided with a first spring (5) and a second spring (1) for compensating the displacement of the auxiliary wheel (4) on both sides of the auxiliary wheel support (2), respectively; the first spring (5) is pressed between one side of the auxiliary wheel support (2) and the secondary shell support (6), and the second spring (1) is pressed between the other side of the auxiliary wheel support (2) and the secondary shell support (6); the variable-diameter auxiliary passing device (18) is connected with an oil and gas pipeline intelligent inner detector (17) through a force sensor connecting device (12), and the oil and gas pipeline intelligent inner detector (17) and the variable-diameter auxiliary passing device (18) connected therewith are pulled through a 3D elbow pipeline by a steel wire rope (16) driven by a motor of a power system (19).

2. The intelligent inline pig variable diameter assisted pass-through device of claim 1, wherein, The force sensor connecting device comprises a force value sensor (12-2), one end of the force value sensor (12-2) is connected with a first connector (12-1), and the other end of the force value sensor (12-2) is connected with a third connector (12-4) through a second connector (12-3).

3. The intelligent inline pipeline pig variable diameter assisted pass-through device of claim 2, wherein, The second connector (12-3) comprises a connecting end (12-3-1) connected with one end of the force value sensor (12-2) and provided with an external thread, a bolt head (12-3-2) and a rotary joint (12-3-3), the rotary joint (12-3-3) is inserted into a positioning groove (12-4-1) of the third connector (12-4) and is rotationally positioned in the positioning groove (12-4-1), and then is fixed by a bolt.

4. The intelligent inline pipeline pig variable diameter assisted passage device of claim 1, wherein, The variable-diameter connecting piece (7) comprises a first variable-diameter connecting head (7-1), the first variable-diameter connecting head (7-1) is sleeved with a second variable-diameter connecting head (7-4) through a first fine adjustment piece (7-2) and a second fine adjustment piece (7-3), and is fixed through a fixed neck device (7-5) inserted into a connecting hole of the second fine adjustment piece (7-3), the connecting hole is arranged along the axial direction of the second fine adjustment piece (7-3) in sequence, the distance between the second fine adjustment piece (7-3) and the second variable-diameter connecting head (7-4) is changed by adjusting the connecting position of the connecting hole and a connecting hole arranged on the second variable-diameter connecting head (7-4); the distance between the first variable-diameter connecting head (7-1) and the second fine adjustment piece (7-3) is adjusted by a rotary adjusting screw of the first fine adjustment piece (7-2).

5. The intelligent inline pipeline pig variable diameter assisted pass-through device of claim 4, wherein, The fixed neck device (7-5) includes a telescopic positioning head (7-5-1) with internal threads, a telescopic rod (7-5-2) with external threads, a telescopic rod sleeve (7-5-3) with internal threads, and a dead plug (7-5-4) with external threads; the telescopic rod (7-5-2) is inserted into the telescopic positioning head (7-5-1) and connected together through internal threads; the telescopic rod sleeve (7-5-3) is sleeved on the other end of the telescopic rod (7-5-2); the telescopic rod sleeve (7-5-3) is fixedly connected with the dead plug (7-5-4) through threads; a spring is arranged between the telescopic positioning head (7-5-1) and the telescopic rod sleeve (7-5-3) for telescoping and positioning the telescopic positioning head (7-5-1).

6. The intelligent inline pipeline pig variable diameter assisted pass-through device of claim 4, wherein, The first fine adjustment part (7-2) comprises a support frame composed of a first support rod, a second support rod, a third support rod and a fourth support rod; the first support rod and the second support rod are connected through a first nut with first internal hole threads; the first nut is connected with one end of a screw rod with left-handed threads; the third support rod and the fourth support rod are connected through a second nut with second internal hole threads; the second nut is connected with one end of a screw rod with right-handed threads.

7. The intelligent inline pipeline pig variable diameter assisted passage device of claim 1, wherein, The main shell support is internally provided with a battery, wires, a storage card and a memory chip; the auxiliary shell support (6) is provided with a camera (11), a temperature sensor (13) and a pressure sensor (14).

8. The intelligent inline pipeline pig variable diameter assisted passage device of claim 1, wherein, The connecting unit is cross-shaped and connected to the main shell support (9).

9. The intelligent inline pipeline pig variable diameter assisted passage device of claim 1, wherein, The connecting unit is rice-shaped and connected to the main shell support (9).

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