Geometric deformation detector for natural gas pipeline

Abstract

The utility model discloses a natural gas pipeline geometric deformation detector comprising a pedestal, one side of the pedestal is provided with a third driving motor, the output end of the third driving motor is provided with a bidirectional screw rod in a penetrating and inward manner, the bidirectional screw rod is in threaded connection with two second threaded blocks, the upper end of the pedestal is provided with an open groove, and the open groove is provided with a second threaded block. The second threaded blocks penetrate through the open grooves and are upwards provided with movable frames, the inner sides of the movable frames are rotationally connected with positioning pieces, the outer sides of the positioning pieces are fixedly connected with first gears, and the two movable frames can be driven to move relatively by arranging a third driving motor, a bidirectional screw and the second threaded blocks; according to the natural gas pipeline detection device, natural gas pipelines of different lengths can be clamped through cooperation with the internal clamping assembly, the stability of the natural gas pipelines during detection is ensured, meanwhile, rotation detection of the natural gas pipelines can be achieved through arrangement of a first gear and a second gear, and therefore the detection efficiency and accuracy of the whole device are improved.

Description

Technical Field

[0001] The utility model relates to the field of natural gas pipeline geometric deformation detectors, in particular to a natural gas pipeline geometric deformation detector. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for conveying gas, liquid or fluid with solid particles. It is a long-distance conveying device. Timely detection of deformation, corrosion, cracks and other defects of long-distance pipelines has become a mandatory requirement of international and domestic regulations. At present, the main application is pipeline in-pipeline detection technology. The detection equipment mainly includes pipeline geometric deformation detector and pipeline defect detector. The main function of the pipeline geometric deformation detector is to detect pipeline depression, deformation and ovality changes caused by fouling, external force and other reasons to obtain complete and reliable pipeline deformation data. At the same time, the data it provides can be used to determine whether the pipeline defect detector can pass the pipeline. However, it still has the following disadvantages in actual use;

[0003] Most of the existing natural gas pipeline deformation detection is done by manually holding a pipe scanning device, which moves along the pipeline to perform pipeline scanning measurements. Moreover, when scanning, it is necessary to circle the pipeline to complete a full-scale inspection of the pipeline. This method requires a lot of manpower and material resources to complete the inspection of long-distance natural gas pipelines, and has low efficiency and high cost. Utility Model Content

[0004] The purpose of the utility model is to provide a natural gas pipeline geometric deformation detector, which solves the problem that most of the existing technologies use manually handheld pipeline scanning equipment to scan the pipeline and measure it along the pipeline. This method requires a lot of manpower and material resources to complete the detection of long-distance natural gas pipelines, and has low efficiency and high cost.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a natural gas pipeline geometric deformation detector, comprising a base, a third drive motor is arranged on one side of the base, a bidirectional screw is arranged inwardly through the output end of the third drive motor, two second thread blocks are threadedly connected on the bidirectional screw, and a slot is opened at the upper end of the base;

[0006] The second threaded block passes through the slot and is provided with a movable frame upward, the inner side of the movable frame is rotatably connected to a positioning member, the outer side of the positioning member is fixedly connected to a first gear, and the four lower ends of the base are fixedly connected to support frames.

[0007] As a further description of the above technical solution: a second driving motor is arranged on the outer side of the movable frame, a second gear is arranged inwardly through the output end of the second driving motor, and the first gear and the second gear are meshed with each other.

[0008] As a further description of the above technical solution: a plurality of second cylinders are fixedly connected inside the positioning member, and an arc-shaped clamping member is fixedly connected to an extending end of the second cylinder.

[0009] As a further description of the above technical solution: connecting frames are fixedly connected to the upper two ends of the base, and a fixing frame is arranged inside the connecting frame.

[0010] As a further description of the above technical solution: a first driving motor is arranged on the outer side of the fixing frame, a lead screw is arranged inwardly through the output end of the first driving motor, and a first threaded block is threadedly connected to the lead screw.

[0011] As a further description of the above technical solution: the lower end of the first threaded block is fixedly connected to the first cylinder, the extending end of the first cylinder is fixedly connected to the arc plate, and the two ends of the arc plate are movably connected to sliding rods.

[0012] As a further description of the above technical solution: a roller is arranged at one end of the slide bar, a limiting plate is fixedly connected to the slide bar, a spring is arranged on the outer side of the slide bar, and distance measuring sensors are arranged at both ends above the arc plate.

[0013] The utility model has the following beneficial effects:

[0014] 1. Compared with the prior art, the geometric deformation detector of the natural gas pipeline can drive the two movable frames to move relative to each other by setting the third driving motor, the bidirectional screw and the second threaded block, and can clamp the natural gas pipelines of different lengths with the internal clamping assembly to ensure the stability of the natural gas pipeline during detection. At the same time, the first gear and the second gear are set to realize the rotation detection, thereby improving the detection efficiency and accuracy of the whole device;

[0015] 2. Compared with the prior art, this natural gas pipeline geometric deformation detector can detect the pipeline by setting an arc plate, a sliding rod and a roller. If there is a depression or bulge on the side wall of the pipeline to be detected, the roller will move. At this time, the distance sensor detects that the distance between detections has changed. The distance sensor transmits the signal to the controller, and the controller controls the alarm to sound an alarm, reminding the staff to record the deformed part.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 It is a schematic diagram of the overall front structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the positioning component structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the structure of the positioning member of the utility model.

[0021] Figure 4 It is a schematic diagram of the arc plate structure of the utility model.

[0022] Legend:

[0023] 1. Connecting frame; 2. First driving motor; 3. First gear; 4. Movable frame; 5. Second driving motor; 6. Third driving motor; 7. Second gear; 8. Support frame; 9. Base; 10. Positioning piece; 11. Arc plate; 12. First cylinder; 13. Lead screw; 14. First threaded block; 15. Fixed frame; 16. Slot; 17. Bidirectional screw; 18. Second threaded block; 19. Arc clamping piece; 20. Second cylinder; 21. Sliding rod; 22. Spring; 23. Limiting plate; 24. Roller; 25. Distance sensor. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] Reference Figure 1-4 The utility model provides an embodiment of a natural gas pipeline geometric deformation detector, including a base 9, a third drive motor 6 is arranged on one side of the base 9, and a bidirectional screw 17 is arranged inwardly through the output end of the third drive motor 6. The bidirectional screw 17 can be rotated by starting the third drive motor 6. Two second thread blocks 18 are threadedly connected to the bidirectional screw 17. A slot 16 is provided at the upper end of the base 9. Under the action of the threaded connection, the second thread block 18 can drive the two movable frames 4 to move relative to each other, so that the positioning member 10 can correspond to the two ends of the pipeline to achieve its rapid positioning function;

[0026] The second threaded block 18 passes through the slot 16 and is provided with a movable frame 4 upwardly. The inner side of the movable frame 4 is rotatably connected with a positioning member 10. The outer side of the positioning member 10 is fixedly connected with a first gear 3. The four lower ends of the base 9 are fixedly connected with a support frame 8. The outer side of the movable frame 4 is provided with a second drive motor 5. The output end of the second drive motor 5 passes through and is provided with a second gear 7 inwardly. The first gear 3 and the second gear 7 are meshed with each other. By starting the second drive motor 5, the second gear 7 can be rotated, and under the action of meshing, the first gear 3 and the positioning member 10 can be driven to rotate, thereby realizing its rotation detection operation;

[0027] A plurality of second cylinders 20 are fixedly connected inside the positioning member 10, and an arc-shaped clamping member 19 is fixedly connected to the extended end of the second cylinder 20. The arc-shaped clamping member 19 is driven to move by starting the second cylinder 20, thereby positioning and clamping the two ends of the pipeline to ensure stability and accuracy during detection;

[0028] The upper ends of the base 9 are fixedly connected with a connecting frame 1, a fixing frame 15 is arranged inside the connecting frame 1, and a first driving motor 2 is arranged outside the fixing frame 15. A lead screw 13 is arranged inwardly through the output end of the first driving motor 2, and a first threaded block 14 is threadedly connected to the lead screw 13. By starting the first driving motor 2, the internal lead screw 13 can be rotated, and under the action of the threaded connection, the first threaded block 14 can drive the detection component below to move, so that detection operations can be performed on it at different positions, thereby improving its detection effect;

[0029] The lower end of the first threaded block 14 is fixedly connected to the first cylinder 12, and the extending end of the first cylinder 12 is fixedly connected to the arc plate 11. The two ends of the arc plate 11 are movably connected to the sliding rods 21. One end of the sliding rod 21 is provided with a roller 24. The sliding rod 21 is fixedly connected to the limiting plate 23, and the outer side of the sliding rod 21 is provided with a spring 22. The upper two ends of the arc plate 11 are provided with distance sensors 25. If there is a depression or bulge on the side wall of the pipeline to be detected, the roller 24 will be driven to move. At this time, the distance sensor 25 detects that the distance between detections has changed. The distance sensor 25 transmits the signal to the controller, and the controller controls the alarm to sound an alarm, reminding the staff to record the deformed part.

[0030] Working principle: When the device is used, the natural gas pipeline to be tested is first placed in the middle of the two movable frames 4. Starting the third drive motor 6 can rotate the internal bidirectional screw 17. Under the action of the threaded connection, the second threaded block 18 can drive the two movable frames 4 to move relative to each other, so that the positioning member 10 can correspond to the two ends of the pipeline. Then, the second cylinder 20 is started to drive the arc clamping member 19 to move, so as to position and clamp the two ends of the pipeline to ensure its stability and accuracy during detection. Then, starting the first cylinder 12 can drive the arc plate 11 to move downward, so that the roller 24 can contact the outside of the pipeline. Then, starting the second drive motor 5 can drive the second gear 7 to rotate. Under the action of meshing, it can drive the first gear 3 and the positioning member 10 to rotate, and realize the rotation detection operation of the pipeline. If the side wall of the pipeline to be detected is concave or convex, it will drive the roller 24 to move. At this time, the distance sensor 25 detects that the distance between the detections has changed. The distance sensor 25 transmits the signal to the controller, and the controller controls the alarm to alarm, reminding the staff to record the deformation.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A natural gas pipeline geometric deformation detector, comprising a base (9), characterized in that: A third drive motor (6) is arranged on one side of the base (9), a bidirectional screw (17) is arranged inwardly through the output end of the third drive motor (6), two second threaded blocks (18) are threadedly connected to the bidirectional screw (17), and a slot (16) is arranged at the upper end of the base (9); The second threaded block (18) passes through the slot (16) and is provided with a movable frame (4) upwardly; a positioning member (10) is rotatably connected to the inner side of the movable frame (4); a first gear (3) is fixedly connected to the outer side of the positioning member (10); and the four lower ends of the base (9) are fixedly connected to a support frame (8).

2. A natural gas pipeline geometric deformation detector according to claim 1, characterized in that: A second drive motor (5) is arranged outside the movable frame (4), a second gear (7) is arranged inwardly through the output end of the second drive motor (5), and the first gear (3) and the second gear (7) are meshed with each other.

3. A natural gas pipeline geometric deformation detector according to claim 1, characterized in that: A plurality of second cylinders (20) are fixedly connected inside the positioning member (10), and an arc-shaped clamping member (19) is fixedly connected to the extended end of the second cylinder (20).

4. A natural gas pipeline geometric deformation detector according to claim 1, characterized in that: The upper ends of the base (9) are fixedly connected to a connecting frame (1), and a fixing frame (15) is arranged inside the connecting frame (1).

5. A natural gas pipeline geometric deformation detector according to claim 4, characterized in that: A first drive motor (2) is arranged outside the fixing frame (15), a lead screw (13) is arranged inwardly through the output end of the first drive motor (2), and a first threaded block (14) is threadedly connected to the lead screw (13).

6. A natural gas pipeline geometric deformation detector according to claim 5, characterized in that: The lower end of the first threaded block (14) is fixedly connected to the first cylinder (12), the extended end of the first cylinder (12) is fixedly connected to the arc plate (11), and the two ends of the arc plate (11) are movably connected to sliding rods (21).

7. A natural gas pipeline geometric deformation detector according to claim 6, characterized in that: A roller (24) is provided at one end of the slide bar (21), a limit plate (23) is fixedly connected to the slide bar (21), a spring (22) is provided on the outer side of the slide bar (21), and distance measuring sensors (25) are provided at both ends above the arc plate (11).

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