Oil and gas pipeline inspection unmanned aerial vehicle

Abstract

The utility model discloses an oil gas pipeline inspection unmanned aerial vehicle relates to oil gas pipeline inspection technical field, including unmanned aerial vehicle main part, the bottom of unmanned aerial vehicle main part is fixedly connected with the shell, the inside of shell is equipped with the lifting mechanism, the bottom of shell is fixedly connected with the connecting seat, the bottom of connecting seat is equipped with the receiving groove, the receiving groove is equipped with the lifting mechanism. A detection device is mounted in the storage groove, the detection device comprises a mounting seat, the mounting seat is adaptively positioned in the storage groove, and a connecting ring is fixedly connected to the top of the storage groove; the detection device can be controlled to slowly fall down through the lifting mechanism in the shell until a certain distance exists between the detection device and the unmanned aerial vehicle body, and at the moment, when the unmanned aerial vehicle flies, turbulent air of propellers of the unmanned aerial vehicle does not affect detection work of the methane sensor and the hydrogen sulfide sensor; therefore, the oil and gas pipeline leakage detection accuracy of the detection device is improved, the detection effect is better, and the use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas pipeline inspection, in particular to an oil and gas pipeline inspection drone. Background Art

[0002] my country's oil and gas pipelines have the characteristics of long total mileage, large annual construction span, frequent safety incidents and accidents, and the total mileage of pipelines is growing rapidly. Strengthening the safety patrol management of pipelines is more severe. Relying on conventional inspections obviously cannot meet the needs, and more scientific management methods and technical means are needed. The use of drone inspection technology has become an application trend in the domestic and foreign oil industries;

[0003] After searching, Chinese patent number CN217935800U discloses a UAV for oil and gas pipeline inspection, including: a fuselage, including a frame and a power device for driving the frame to fly; a control system for controlling the flight state of the power device; an image transmission system, including an image acquisition unit for collecting the topography near the pipeline and providing pipeline monitoring images, a detection unit for detecting the leakage of the transmission medium in the pipeline, a storage unit for storing monitoring images, topography and leakage, and a transmission unit for transmitting the monitoring images, topography and leakage stored in the storage unit to a terminal device; a mounting frame for fixing the image transmission system on the fuselage;

[0004] By observing the public document, it is found that methane leakage in oil and gas pipelines is detected through detection units. Generally, the detection of methane and hydrogen sulfide mainly relies on sensors. The propellers of drones will cause turbulence to the air during flight inspections. Since the sensor is close to the propeller of the drone, the sensor will be affected by the air turbulence during detection, which reduces the detection accuracy and the detection effect is poor.

[0005] To this end, the present application proposes an oil and gas pipeline inspection drone. Utility Model Content

[0006] The utility model provides an oil and gas pipeline inspection drone to solve the above technical problems.

[0007] In order to solve the above technical problems, the utility model provides an oil and gas pipeline inspection drone, comprising a drone body, a shell fixedly connected to the bottom of the drone body, a lifting mechanism installed inside the shell, a connecting seat fixedly connected to the bottom of the shell, a receiving groove opened at the bottom of the connecting seat, a detection device installed inside the receiving groove, the detection device comprising a mounting seat, the mounting seat is adapted to be located inside the receiving groove, and a connecting ring is fixedly connected to the top of the receiving groove;

[0008] The lifting mechanism includes a winding roller, which is movably connected to the inside of a shell through a rotating shaft, a connecting rope is wound around the outer end of the shell, one end of the connecting rope is fixedly connected to a connecting ring, a large gear is fixedly connected to the outer end of the winding roller, a motor is fixedly connected to one side of the shell, a small gear is fixedly connected to the motor output shaft, the small gear is located at the bottom of the large gear, and the large gear and the small gear are meshed with each other.

[0009] Preferably, two retaining rings are fixedly connected to the outer end of the winding roller, the connecting rope is located between the two retaining rings, and the large gear is located outside one of the retaining rings.

[0010] Preferably, the detection device also includes a methane sensor and a hydrogen sulfide sensor, and the methane sensor and the hydrogen sulfide sensor are both embedded and installed at the bottom of the mounting base. A control mainboard and a battery are fixedly installed inside the mounting base. The battery is located on the rear side of the control mainboard. A wireless transmission module is electrically connected to the control mainboard. The methane sensor, the hydrogen sulfide sensor and the battery are electrically connected to the control mainboard respectively.

[0011] Preferably, a counterweight block is fixedly connected inside the mounting seat, and the counterweight block is located on the front side of the control main board.

[0012] Preferably, an opening is provided at the top of the connecting seat, the opening is respectively connected to the receiving groove and the interior of the shell, and the cross-section of the mounting seat is an isosceles trapezoid.

[0013] Compared with the related art, the oil and gas pipeline inspection drone provided by the utility model has the following beneficial effects:

[0014] The detection device can be controlled to fall slowly downward through the lifting mechanism in the shell until there is a certain distance between the detection device and the main body of the drone. At this time, the air turbulence caused by the propeller of the drone during flight will not affect the detection work of the methane sensor and the hydrogen sulfide sensor, thereby improving the detection accuracy of the detection device for oil and gas pipeline leaks, achieving better detection effects and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an oil and gas pipeline inspection drone proposed by the utility model;

[0016] Figure 2 This is a partial front view cross-sectional view of an oil and gas pipeline inspection drone proposed by the utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of a connection seat of an oil and gas pipeline inspection drone proposed in the utility model;

[0018] Figure 4This is a schematic diagram of the internal structure of a mounting base for an oil and gas pipeline inspection drone proposed by the utility model.

[0019] Numbers in the figure: 1. UAV body, 2. Shell, 3. Connecting seat, 4. Storage slot, 5. Mounting seat, 6. Methane sensor, 7. Hydrogen sulfide sensor, 8. Control main board, 9. Wireless transmission module, 10. Battery, 11. Counterweight, 12. Connecting ring, 13. Opening, 14. Winding roller, 15. Block ring, 16. Connecting rope, 17. Large gear, 18. Motor, 19. Small gear. DETAILED DESCRIPTION

[0020] Example, by Figure 1-4 The utility model includes a drone body 1, a shell 2 is fixedly connected to the bottom of the drone body 1, a lifting mechanism is installed inside the shell 2, a connecting seat 3 is fixedly connected to the bottom of the shell 2, a receiving groove 4 is opened at the bottom of the connecting seat 3, a detection device is installed inside the receiving groove 4, and the detection device includes a mounting seat 5, the mounting seat 5 is adapted to be located inside the receiving groove 4, and a connecting ring 12 is fixedly connected to the top of the receiving groove 4;

[0021] The lifting mechanism includes a winding roller 14, which is movably connected to the inside of the shell 2 through a rotating shaft. A connecting rope 16 is wound around the outer end of the shell 2, and one end of the connecting rope 16 is fixedly connected to the connecting ring 12. The outer end of the winding roller 14 is fixedly connected to a large gear 17, and one side of the inside of the shell 2 is fixedly connected to a motor 18. The output shaft of the motor 18 is fixedly connected to a small gear 19, and the small gear 19 is located at the bottom of the large gear 17, and the large gear 17 and the small gear 19 are meshed with each other.

[0022] Two retaining rings 15 are fixedly connected to the outer end of the winding roller 14 , the connecting rope 16 is located between the two retaining rings 15 , and the large gear 17 is located outside one of the retaining rings 15 . The retaining ring 15 limits the connecting rope 16 wound on the winding roller 14 .

[0023] The detection device also includes a methane sensor 6 and a hydrogen sulfide sensor 7, which are both embedded and installed at the bottom of the mounting base 5. A control mainboard 8 and a battery 10 are fixedly installed inside the mounting base 5. The battery 10 is located at the rear side of the control mainboard 8. A wireless transmission module 9 is electrically connected to the control mainboard 8. The methane sensor 6, the hydrogen sulfide sensor 7 and the battery 10 are electrically connected to the control mainboard 8 respectively. The detection device can detect the methane concentration and hydrogen sulfide leaked from the oil and gas pipeline.

[0024] A counterweight block 11 is fixedly connected inside the mounting seat 5 and is located in front of the control main board 8. The counterweight block 11 can center the overall center of gravity of the detection device to improve its stability.

[0025] An opening 13 is provided on the top of the connecting seat 3, and the opening 13 is respectively connected to the storage groove 4 and the inside of the shell 2. The cross-section of the mounting seat 5 is an isosceles trapezoid, and the mounting seat 5 with an isosceles trapezoidal cross-section is adapted to the shape of the storage groove 4. This shape allows the mounting seat 5 to be more easily and accurately adapted to be stored in the storage groove 4 when the lifting mechanism lifts the detection device.

[0026] Working principle:

[0027] The oil and gas pipeline is inspected by flying the drone body 1. When detecting whether there is methane and hydrogen sulfide leakage in the oil and gas pipeline, the methane sensor 6 and the hydrogen sulfide sensor 7 are mainly used for detection. In order to avoid the influence of the propeller disturbing the air on the methane sensor 6 and the hydrogen sulfide sensor 7 during the flight of the drone body 1, the motor 18 can be started and the winding roller 14 can be driven to rotate through the meshing transmission of the small gear 19 and the large gear 17. When the winding roller 14 rotates, the wound connecting rope 16 gradually stretches out, and the mounting seat 5 connected under the connecting rope 16 can be detached from the storage groove 4 and slowly falls downward with gravity until the mounting seat 5 is a certain distance away from the drone body 1. When the drone body 1 is flying, the propeller disturbing the airflow will not affect the methane sensor 6 and the hydrogen sulfide sensor 7. During this period, the methane sensor 6 and the hydrogen sulfide sensor 7 can respectively detect the methane and hydrogen sulfide concentrations in the air near the oil and gas pipeline, and the detection data will be transmitted to the control main board 8. Then the data of the control main board 8 can be wirelessly transmitted to the worker's mobile terminal through the wireless transmission module 9.

Claims

1. An oil and gas pipeline inspection drone, comprising a drone body (1), characterized in that: The bottom of the drone body (1) is fixedly connected to a shell (2), a lifting mechanism is installed inside the shell (2), a connecting seat (3) is fixedly connected to the bottom of the shell (2), a receiving groove (4) is provided at the bottom of the connecting seat (3), a detection device is installed inside the receiving groove (4), the detection device comprises a mounting seat (5), the mounting seat (5) is adapted to be located inside the receiving groove (4), and a connecting ring (12) is fixedly connected to the top of the receiving groove (4); The lifting mechanism comprises a winding roller (14), the winding roller (14) is movably connected to the inside of the shell (2) via a rotating shaft, a connecting rope (16) is wound around the outer end of the shell (2), one end of the connecting rope (16) is fixedly connected to the connecting ring (12), the outer end of the winding roller (14) is fixedly connected to a large gear (17), one side of the inside of the shell (2) is fixedly connected to a motor (18), the output shaft of the motor (18) is fixedly connected to a small gear (19), the small gear (19) is located at the bottom of the large gear (17), and the large gear (17) and the small gear (19) are meshed with each other.

2. The oil and gas pipeline inspection drone according to claim 1, characterized in that: The outer end of the winding roller (14) is fixedly connected to two retaining rings (15), the connecting rope (16) is located between the two retaining rings (15), and the large gear (17) is located outside one of the retaining rings (15).

3. The oil and gas pipeline inspection drone according to claim 1, characterized in that: The detection device further comprises a methane sensor (6) and a hydrogen sulfide sensor (7), wherein the methane sensor (6) and the hydrogen sulfide sensor (7) are both embedded and mounted on the bottom of a mounting seat (5), a control mainboard (8) and a storage battery (10) are fixedly mounted inside the mounting seat (5), the storage battery (10) is located at the rear side of the control mainboard (8), a wireless transmission module (9) is electrically connected to the control mainboard (8), and the methane sensor (6), the hydrogen sulfide sensor (7) and the storage battery (10) are electrically connected to the control mainboard (8), respectively.

4. The oil and gas pipeline inspection drone according to claim 3, characterized in that: A counterweight block (11) is fixedly connected inside the mounting seat (5), and the counterweight block (11) is located on the front side of the control main board (8).

5. The oil and gas pipeline inspection drone according to claim 1, characterized in that: The top of the connecting seat (3) is provided with an opening (13), and the opening (13) is respectively connected to the storage groove (4) and the interior of the shell (2), and the cross section of the mounting seat (5) is an isosceles trapezoid.

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