Natural gas conveying pipeline crack detector

Abstract

The natural gas conveying pipeline crack detector comprises a base, a fixing plate is fixedly installed on the upper end face of the base, a connecting shaft is rotatably installed on the inner wall of the fixing plate, a first motor connected with the connecting shaft is fixedly installed on the outer wall of the fixing plate, and a supporting frame is fixedly installed at the end of the connecting shaft. A double-thread screw is rotatably mounted on the inner wall of the supporting frame, a rocking wheel is rotatably mounted at the end of the double-thread screw, and two moving plates are mounted on the outer wall of the double-thread screw through limiting mechanisms in a threaded mode. Through the arrangement of the connecting shaft, the supporting frame, the screw rod, the second limiting rod and other assemblies, after a natural gas pipeline is fixed, the screw rod rotates to drive the movable sleeve to move left and right through cooperation with the second limiting rod, the movable sleeve drives the detection equipment to move up and down through cooperation with the air cylinder, and the first motor drives the connecting shaft to rotate; and the connecting shaft drives the supporting frame to rotate, so that the natural gas pipeline can be detected in all directions.

Description

Technical Field

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

[0002] A natural gas pipeline is a pipeline system specifically used to transport natural gas, including gas transmission pipelines, gas gathering pipelines and gas distribution pipelines. The main function of a natural gas pipeline is to transport natural gas from the mining site or processing plant to the urban gas distribution center or industrial enterprise users. The advantages of a natural gas pipeline include low transportation costs, small footprint, fast construction, large oil and gas transportation volume, high safety performance, less transportation loss, low risk of leakage, less environmental pollution, less impact from severe weather, less equipment maintenance, easy management and easy remote centralized monitoring.

[0003] After years of operation, natural gas pipelines will inevitably have various damages and cracks due to corrosion, poor operation and management, etc. Therefore, it is necessary to detect whether there are cracks in the pipeline before pre-buried, and if there are cracks, they can be repaired. In the prior art, visual inspection or photographic inspection is generally used to observe the external integrity, rust condition, tightness of joints and other issues of the natural gas pipeline. In addition, the existing natural gas pipeline detection device has a simple structure and cannot simply and quickly detect multiple angles and positions of the entire pipeline. The detection efficiency is low and the practicality is insufficient. Therefore, it is necessary to redesign a natural gas transmission pipeline crack detector to address the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a natural gas transmission pipeline crack detector.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A natural gas transmission pipeline crack detector, a base, wherein a fixing plate is fixedly installed on the upper end surface of the base, a connecting shaft is rotatably installed on the inner wall of the fixing plate, a first motor connected to the connecting shaft is fixedly installed on the outer wall of the fixing plate, a support frame is fixedly installed on the end of the connecting shaft, a double-headed screw is rotatably installed on the inner wall of the support frame, a rocking wheel is rotatably installed on the end of the double-headed screw, two movable plates are threadedly installed on the outer wall of the double-headed screw through a limiting mechanism, and clamping plates are fixedly installed on the inner walls of the two movable plates through a connecting mechanism, the support plate is fixedly installed on the upper end surface of the base through a telescopic mechanism, a fixing frame is fixedly installed on the inner wall of the fixing plate, a screw is rotatably installed on the inner wall of the fixing frame, a second motor connected to the screw is fixedly installed on the outer wall of the fixing frame, a second limiting rod is fixedly installed on the inner wall of the fixing frame, a movable sleeve is threadedly installed on the outer wall of the screw, the second limiting rod slides through the movable sleeve, a detection device is fixedly installed on the movable sleeve through a lifting mechanism, and a plurality of pulleys are fixedly installed on the bottom wall of the base.

[0007] Preferably, the limiting mechanism comprises a first limiting rod fixedly mounted inside the supporting frame, and the first limiting rod slides through the two movable plates.

[0008] Preferably, the connection mechanism comprises connection blocks fixedly mounted on the inner walls of the two movable plates, and the two connection blocks are fixedly connected to the outer walls of the clamping plates.

[0009] Preferably, the telescopic mechanism comprises an electric push rod fixedly mounted on the upper end surface of the base, and the telescopic end of the electric push rod is fixedly connected to the outer wall of the support plate.

[0010] Preferably, the lifting mechanism comprises a cylinder fixedly mounted on the outer wall of the movable sleeve, and the telescopic end of the cylinder is fixedly connected to the outer wall of the detection device.

[0011] Preferably, anti-skid pads are fixedly mounted on the inner walls of the two clamping plates, and the anti-skid pads are made of rubber.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting up components such as a connecting shaft, a support frame, a screw and a second limit rod, when the natural gas pipeline is fixed, the screw drives the movable sleeve to move left and right through the cooperation with the second limit rod when rotating, thereby detecting different positions of the outer wall of the natural gas pipeline. The first motor drives the connecting shaft to rotate, and the connecting shaft drives the support frame to rotate, thereby driving the clamped natural gas to rotate, thereby realizing a full-scale inspection of the natural gas pipeline.

[0014] 2. By setting up components such as a double-headed screw, a movable plate, a connecting block and a clamping plate, when the double-headed screw rotates, it drives the two movable plates to move relative to each other through cooperation with the first limit rod, and the two movable plates drive the two clamping plates to move relative to each other through cooperation with the connecting block, thereby clamping and fixing natural gas pipelines of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a natural gas transmission pipeline crack detector proposed by the utility model;

[0016] Figure 2 This is a side view structural diagram of a natural gas pipeline crack detector proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the bottom cross-sectional structure of a natural gas pipeline crack detector proposed by the utility model;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0019] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point B in FIG.

[0020] In the figure: 1 base, 2 fixed plate, 3 connecting shaft, 4 first motor, 5 support frame, 6 double-headed screw, 7 rocker, 8 first limit rod, 9 movable plate, 10 connecting block, 11 clamping plate, 12 anti-slip pad, 13 electric push rod, 14 support plate, 15 fixed frame, 16 screw, 17 second motor, 18 second limit rod, 19 movable sleeve, 20 cylinder, 21 detection device, 22 pulley. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5A crack detector for a natural gas transmission pipeline includes a base 1, a fixed plate 2 is fixedly installed on the upper end surface of the base 1, a connecting shaft 3 is rotatably installed on the inner wall of the fixed plate 2, a first motor 4 connected to the connecting shaft 3 is fixedly installed on the outer wall of the fixed plate 2, a support frame 5 is fixedly installed on the end of the connecting shaft 3, a double-headed screw 6 is rotatably installed on the inner wall of the support frame 5, a rocking wheel 7 is rotatably installed on the end of the double-headed screw 6, two moving plates 9 are threadedly installed on the outer wall of the double-headed screw 6 through a limiting mechanism, and the limiting mechanism includes a first limiting rod 8 fixedly installed inside the supporting frame 5, the first limiting rod 8 slides through the two moving plates 9, and the first limiting rod 8 can limit the two movable plates 9 so that the two movable plates 9 can only move axially along the outer wall of the double-headed screw 6. The inner walls of the two movable plates 9 are fixedly installed with clamping plates 11 through a connecting mechanism. The connecting mechanism includes connecting blocks 10 fixedly installed on the inner walls of the two movable plates 9. The two connecting blocks 10 are fixedly connected to the outer walls of the clamping plates 11. The inner walls of the two clamping plates 11 are fixedly installed with anti-skid pads 12. The anti-skid pads 12 are made of rubber material. The rubber material has good elasticity and softness, which enables it to form a closer contact between the surface and the object, thereby increasing friction and improving the friction coefficient.

[0023] A support plate 14 is fixedly installed on the upper end surface of the base 1 through a telescopic mechanism, and the telescopic mechanism includes an electric push rod 13 fixedly installed on the upper end surface of the base 1, and the telescopic end of the electric push rod 13 is fixedly connected to the outer wall of the support plate 14, a fixed frame 15 is fixedly installed on the inner wall of the fixed plate 2, a screw 16 is rotatably installed on the inner wall of the fixed frame 15, and a second motor 17 connected to the screw 16 is fixedly installed on the outer wall of the fixed frame 15, a second limiting rod 18 is fixedly installed on the inner wall of the fixed frame 15, and a moving sleeve 19 is threadedly installed on the outer wall of the screw 16, and the second limiting rod 18 slides through the moving sleeve 19, and a detection device 21 is fixedly installed on the moving sleeve 19 through a lifting mechanism, and the lifting mechanism includes a cylinder 20 fixedly installed on the outer wall of the moving sleeve 19, and the telescopic end of the cylinder 20 is fixedly connected to the outer wall of the detection device 21, and a plurality of pulleys 22 are fixedly installed on the bottom wall of the base 1.

[0024] When the utility model is used, the natural gas pipeline is first placed between the two clamping plates 11, and the double-headed screw 6 is driven to rotate by the rocker 7. When the double-headed screw 6 rotates, it can drive the two movable plates 9 to move relative to each other through the cooperation with the first limit rod 8. At this time, the two movable plates 9 can drive the two clamping plates 11 to move relative to each other and approach each other through the cooperation of the connecting block 10, so that the two clamping plates 11 can be clamped and fixed according to natural gas pipelines of different sizes. At the same time, the friction between the natural gas pipeline and the anti-slip pad 12 can be increased to increase the clamping effect. Then the electric push rod 13 drives the support plate 14 to move up and down, which can support the clamped and fixed natural gas pipeline and increase the stability of natural gas pipelines of different sizes during detection;

[0025] When the natural gas pipeline is inspected, the detection device 21 can be driven to move up and down under the telescopic action of the cylinder 20, so that the detection device 21 can be moved close to the outer wall of the natural gas pipeline, thereby detecting natural gas pipelines of different sizes, and during the inspection, the second motor 17 is started, and the second motor 17 drives the screw 16 inside the fixed frame 15 to rotate. When the screw 16 rotates, it can drive the movable sleeve 19 to move left and right by cooperating with the second limit rod 18, thereby driving the detection device 21 to move, so as to detect different positions of the natural gas pipeline. At the same time, the first motor 4 drives the support frame 5 to rotate through the connecting shaft 3, and the support frame 5 drives the clamped and fixed natural gas pipeline to rotate, thereby realizing the circumferential rotation of the natural gas pipeline, facilitating all-round inspection of the natural gas pipeline, increasing the inspection effect of the natural gas pipeline, and the natural gas pipeline inspection equipment can be conveniently moved through the cooperation of the base 1 and the pulley 22.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A natural gas transmission pipeline crack detector, comprising a base (1), characterized in that: A fixing plate (2) is fixedly mounted on the upper end surface of the base (1); a connecting shaft (3) is rotatably mounted on the inner wall of the fixing plate (2); a first motor (4) connected to the connecting shaft (3) is fixedly mounted on the outer wall of the fixing plate (2); a supporting frame (5) is fixedly mounted on the end of the connecting shaft (3); a double-headed screw (6) is rotatably mounted on the inner wall of the supporting frame (5); a rocking wheel (7) is rotatably mounted on the end of the double-headed screw (6); two movable plates (9) are threadedly mounted on the outer wall of the double-headed screw (6) via a limiting mechanism; a clamping plate (11) is fixedly mounted on the inner walls of the two movable plates (9) via a connecting mechanism; the upper end surface of the base (1) is extended by a threaded connecting rod (11) to extend the upper end surface of the base (1). The shrinking mechanism is fixedly mounted with a support plate (14); a fixed frame (15) is fixedly mounted on the inner wall of the fixed plate (2); a screw (16) is rotatably mounted on the inner wall of the fixed frame (15); a second motor (17) connected to the screw (16) is fixedly mounted on the outer wall of the fixed frame (15); a second limiting rod (18) is fixedly mounted on the inner wall of the fixed frame (15); a movable sleeve (19) is threadedly mounted on the outer wall of the screw (16); the second limiting rod (18) slides through the movable sleeve (19); a detection device (21) is fixedly mounted on the movable sleeve (19) via a lifting mechanism; and a plurality of pulleys (22) are fixedly mounted on the bottom wall of the base (1).

2. A natural gas pipeline crack detector according to claim 1, characterized in that: The limiting mechanism comprises a first limiting rod (8) fixedly mounted inside the support frame (5), wherein the first limiting rod (8) slides through two movable plates (9).

3. A natural gas pipeline crack detector according to claim 2, characterized in that: The connection mechanism comprises connection blocks (10) which are fixedly mounted on the inner walls of the two movable plates (9); the two connection blocks (10) are fixedly connected to the outer walls of the clamping plates (11).

4. A natural gas pipeline crack detector according to claim 3, characterized in that: The telescopic mechanism comprises an electric push rod (13) fixedly mounted on the upper end surface of the base (1), and the telescopic end of the electric push rod (13) is fixedly connected to the outer wall of the support plate (14).

5. A natural gas pipeline crack detector according to claim 4, characterized in that: The lifting mechanism comprises a cylinder (20) fixedly mounted on the outer wall of the moving sleeve (19), and the telescopic end of the cylinder (20) is fixedly connected to the outer wall of the detection device (21).

6. A natural gas pipeline crack detector according to claim 5, characterized in that: Anti-skid pads (12) are fixedly mounted on the inner walls of the two clamping plates (11), and the anti-skid pads (12) are made of rubber.

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