Pipeline defect detection device

Abstract

The utility model provides a pipeline defect detection device, which belongs to the field of pipeline detection and comprises a markable detector, and a driving component is mounted at the right end of the markable detector. The markable detector comprises a mounting ring, the interior of the mounting ring is fixedly connected with a plurality of natural gas concentration detection sensors which are arranged at equal intervals, the outer wall of the mounting ring is fixedly connected with a plurality of fixing plates which are symmetrically distributed, the top ends of the fixing plates are fixedly connected with paint sprayers, the paint sprayers are located at the outer end of the mounting ring, and the paint sprayers penetrate through the mounting ring; according to the pipeline defect detection device, current defect leakage points can be painted and marked while defect detection can be carried out on a pipeline, convenience is brought to subsequent detection personnel to overhaul and block the current position, the detection efficiency of the pipeline can be improved, the pipeline can be automatically detected without the operation of the detection personnel, and the detection efficiency is improved. And a maintainer does not need to wait at the defect leakage position of the pipeline, so that the pipeline detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of pipeline detection, in particular to a pipeline defect detection device. Background Art

[0002] A natural gas pipeline refers to a pipeline that transports natural gas from the mining site or processing plant to the urban gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. The pipeline is inspected after a certain period of use to prevent natural gas leaks caused by pipeline defects. General detection equipment can only detect leaks in natural gas pipelines of the same diameter, but cannot detect leaks in natural gas pipelines of different diameters, and the detection efficiency is low.

[0003] Chinese Patent Authorization Announcement No.: CN202220338679.5, provides a natural gas pipeline leakage detection device, which can drive the second horizontal detection tube to rotate one circle along the natural gas pipeline to accurately detect the natural gas pipeline through the setting of a rotating drive mechanism. Through the setting of the first hose between the first vertical detection tube and the second vertical detection tube and the lifting mechanism between the support plate and the second horizontal detection tube, the diameter of the second horizontal detection tube for one rotation can be flexibly adjusted, so as to facilitate the detection of natural gas pipelines of different diameters. However, when a defective leakage of the natural gas pipeline is detected, maintenance personnel are required to seal the defective position in time. However, it is often inconvenient for maintenance personnel to arrive at the detection position in time. Therefore, the equipment needs to maintain the current position and wait for the maintenance personnel to come, which is not convenient for continuing to inspect and detect the gas position of the pipeline, and is not conducive to improving the detection efficiency of the natural gas pipeline.

[0004] Therefore, it is necessary to provide a pipeline defect detection device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a pipeline defect detection device.

[0006] The utility model provides a pipeline defect detection device, including a markable detector, a driving assembly is installed at the right end of the markable detector; the markable detector includes a mounting ring, a plurality of natural gas concentration detection sensors are fixedly connected to the interior of the mounting ring and are arranged equidistantly, a plurality of fixed plates are fixedly connected to the outer wall of the mounting ring and are symmetrically distributed, a paint sprayer is fixedly connected to the top end of the fixed plate, the paint sprayer is located at the outer end of the mounting ring, the paint sprayer passes through the mounting ring, a PLC controller is fixedly connected to the top end of the fixed plate, and the PLC controller is electrically connected to the paint sprayer and the natural gas concentration detection sensor.

[0007] Preferably, the paint sprayer includes a plurality of nozzles distributed in a ring shape, the nozzles are mounted on the outer end of a mounting ring, a solenoid valve is mounted on the outer end of the nozzles, the solenoid valve is electrically connected to a PLC controller, and the nozzles are compatible with a natural gas concentration detection sensor.

[0008] Preferably, the nozzle passes through the mounting ring, and a connecting pipe is installed at the outer end of the nozzle. The connecting pipe is annular in shape and is located outside the mounting ring.

[0009] Preferably, the inner end of the connecting pipe is fixedly connected to a delivery pipe, the right end of the delivery pipe is fixedly connected to a storage tank, and the storage tank is mounted on the top of the fixed plate and is located on the left side of the PLC controller.

[0010] Preferably, the driving assembly comprises a plurality of first spring telescopic rods which are arranged equidistantly, wherein the first spring telescopic rods are mounted on the inner end of the fixed plate, and one end of the first spring telescopic rod away from the fixed plate is fixedly connected to a cross plate.

[0011] Preferably, the outer end of the transverse plate is fixedly connected with a motor and a plurality of auxiliary rubber rollers, the motor is electrically connected to a PLC controller, the output end of the motor is fixedly connected with a main rubber roller, the main rubber roller is installed at the inner end of the transverse plate, the main rubber roller is rotatably connected to the transverse plate, a pulley group is installed at one end of the main rubber roller, a plurality of auxiliary rubber rollers are installed at the inner end of the transverse plate, the auxiliary rubber rollers are rotatably connected to the transverse plate, and the auxiliary rubber rollers are connected to the pulley group.

[0012] Compared with the related art, the pipeline defect detection device provided by the utility model has the following beneficial effects:

[0013] 1. A pipeline defect detection device detects the natural gas concentration at the defective leakage point of the pipeline through a natural gas concentration detection sensor. When it reaches the highest concentration point, the natural gas concentration detection sensor sends a signal to the PLC controller, and the PLC controller controls the paint sprayer to spray paint at the current position to mark the defective leakage point. The maintenance worker can determine the defective leakage point of the pipeline according to the paint spraying position, and then seal and repair the current position.

[0014] 2. A pipeline defect detection device, which drives the main rubber roller to rotate through a motor, the main rubber roller drives the pulley group to rotate, and the pulley group drives the auxiliary rubber roller to rotate. First, the first spring telescopic rod is convenient for forming a supporting force on the cross plate, so that the cross plate fits the outer wall of the pipeline. Therefore, the main rubber roller and the auxiliary rubber roller can be positioned when they rotate, so that the main rubber roller and the auxiliary rubber roller drive the fixed plate to move, and then the entire markable detector moves at the outer wall of the pipeline, so that the markable detector can detect and mark pipeline defect leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall split structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the split structure of the markable detector of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the driving component of the utility model.

[0019] Numbers in the figure: 1. markable detector; 2. drive assembly; 101. mounting ring; 102. natural gas concentration detection sensor; 103. fixing plate; 104. paint sprayer; 105. PLC controller; 10401. spray nozzle; 10402. connecting pipe; 10403. conveying pipe; 10404. storage tank; 201. first spring telescopic rod; 202. horizontal plate; 203. motor; 204. main rubber roller; 205. pulley group; 206. auxiliary rubber roller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 4 A pipeline defect detection device provided by an embodiment of the utility model comprises a markable detector 1, a driving assembly 2 is installed at the right end of the markable detector 1; the markable detector 1 comprises a mounting ring 101, a plurality of natural gas concentration detection sensors 102 arranged equidistantly are fixedly connected to the interior of the mounting ring 101, a plurality of fixed plates 103 symmetrically distributed are fixedly connected to the outer wall of the mounting ring 101, a paint sprayer 104 is fixedly connected to the top of the fixed plate 103, the paint sprayer 104 is located at the outer end of the mounting ring 101, the paint sprayer 104 penetrates the mounting ring 101, a PLC controller 105 is fixedly connected to the top of the fixed plate 103, and the PLC controller 105 is electrically connected to the paint sprayer 104 and the natural gas concentration detection sensor 102;

[0022] By driving the component 2, the markable detector 1 is installed on the outer end of the pipeline, and the driving component 2 drives the markable detector 1 to move linearly on the outer wall of the pipeline. During the movement, the markable detector 1 detects defects in the pipeline. When a defect leak is detected, the current defect leak point can be marked by spraying paint, which is convenient for subsequent inspectors to inspect and seal the current position, thereby improving the inspection efficiency of the pipeline. After marking, the driving component 2 can continue to drive the markable detector 1 to move until the pipeline inspection is completed; wherein, the natural gas concentration detection sensor 102 detects the natural gas concentration at the defect leak of the pipeline. When the most concentrated point is reached, the natural gas concentration detection sensor 102 sends a signal to the PLC controller 105, and the PLC controller 105 controls the paint sprayer 104 to spray paint at the current position to mark the defect leak point. The inspector can judge the defect leak point of the pipeline according to the paint spraying position, and then seal and repair the current position.

[0023] The paint sprayer 104 includes a plurality of nozzles 10401 distributed in a ring shape. The nozzles 10401 are installed at the outer end of the mounting ring 101 . A solenoid valve is installed at the outer end of the nozzles 10401 . The solenoid valve is electrically connected to the PLC controller 105 . The nozzles 10401 are compatible with the natural gas concentration detection sensor 102 .

[0024] The nozzle 10401 passes through the mounting ring 101 . A connecting pipe 10402 is installed at the outer end of the nozzle 10401 . The connecting pipe 10402 is annular in shape and is located outside the mounting ring 101 .

[0025] The inner end of the connecting pipe 10402 is fixedly connected to a delivery pipe 10403, and the right end of the delivery pipe 10403 is fixedly connected to a storage tank 10404. The storage tank 10404 is installed on the top of the fixed plate 103 and is located on the left side of the PLC controller 105.

[0026] The paint is stored in the storage tank 10404 and delivered to each spray pipe 10401 through the delivery pipe 10403 and the connecting pipe 1040, so that the subsequent spray pipe 10401 can individually spray paint and mark the defective leaking parts of the pipelines at different positions.

[0027] The driving assembly 2 includes a plurality of first spring telescopic rods 201 arranged equidistantly. The first spring telescopic rods 201 are installed at the inner end of the fixed plate 103 . One end of the first spring telescopic rods 201 away from the fixed plate 103 is fixedly connected to a transverse plate 202 .

[0028] The outer end of the transverse plate 202 is fixedly connected with a motor 203 and a plurality of auxiliary rubber rollers 206, the motor 203 is electrically connected to the PLC controller 105, the output end of the motor 203 is fixedly connected with a main rubber roller 204, the main rubber roller 204 is mounted on the inner end of the transverse plate 202, the main rubber roller 204 is rotatably connected to the transverse plate 202, one end of the main rubber roller 204 is mounted with a pulley group 205, a plurality of auxiliary rubber rollers 206 are mounted on the inner end of the transverse plate 202, the auxiliary rubber roller 206 is rotatably connected to the transverse plate 202, and the auxiliary rubber roller 206 is connected to the pulley group 205;

[0029] The main rubber roller 204 is driven to rotate by the motor 203, and the main rubber roller 204 drives the pulley group 205 to rotate, and the pulley group 205 drives the auxiliary rubber roller 206 to rotate. First, the first spring telescopic rod 201 is convenient for forming a supporting force for the cross plate 202, so that the cross plate 202 fits the outer wall of the pipeline. Therefore, the main rubber roller 204 and the auxiliary rubber roller 206 can be positioned when rotating, so that the main rubber roller 204 and the auxiliary rubber roller 206 drive the fixed plate 103 to move, and then the entire markable detector 1 moves at the outer wall of the pipeline, so that the markable detector 1 can detect and mark defective leakage of the pipeline, without the need for maintenance personnel to operate, and the pipeline can be automatically inspected, and there is no need to wait for maintenance personnel to come to the defective leakage of the pipeline, thereby improving the efficiency of pipeline inspection.

[0030] During operation, the driving assembly 2 and the markable detector 1 are installed on the outer end of the pipeline, and the motor 203 is turned on. The motor 203 drives the main rubber roller 204 to rotate, and the main rubber roller 204 drives the pulley group 205 to rotate, and the pulley group 205 drives the auxiliary rubber roller 206 to rotate. First, the first spring telescopic rod 201 is convenient for forming a supporting force on the cross plate 202, so that the cross plate 202 fits the outer wall of the pipeline. Therefore, the main rubber roller 204 and the auxiliary rubber roller 206 can be positioned when they rotate, so that the main rubber roller 204 and the auxiliary rubber roller 206 drive the fixed plate 103 to move, and then the entire markable detector 1 moves at the outer wall of the pipeline. When moving, the natural gas concentration detection sensor 102 detects the natural gas concentration at the defective leakage of the pipeline. When it reaches the most concentrated point, the natural gas concentration detection sensor 102 sends a signal to the PLC controller 105. Send a signal, the PLC controller 105 controls the paint sprayer 104 to spray paint to the current position, mark the defective leakage point, the maintenance worker can judge the defective leakage point of the pipeline according to the paint spraying position, and then seal and repair the current position, so that the markable detector 1 can detect and mark the defective leakage of the pipeline, without the need for maintenance workers to operate, and automatically detect the pipeline, and there is no need to wait for maintenance workers to come at the defective leakage of the pipeline, thereby improving the efficiency of pipeline detection, and after marking, the driving component 2 can continue to drive the markable detector 1 to move until the pipeline detection is completed; wherein, the storage tank 10404 stores paint and transports paint to each nozzle 10401 through the delivery pipe 10403 and the connecting pipe 1040, so that the subsequent nozzle 10401 can separately spray paint and mark the defective leakage of pipelines at different positions.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline defect detection device, characterized in that: It comprises a markable detector (1), wherein a driving component (2) is installed at the right end of the markable detector (1); The markable detector (1) comprises a mounting ring (101), the interior of the mounting ring (101) is fixedly connected with a plurality of equidistantly arranged natural gas concentration detection sensors (102), the outer wall of the mounting ring (101) is fixedly connected with a plurality of symmetrically distributed fixing plates (103), the top end of the fixing plate (103) is fixedly connected with a paint sprayer (104), the paint sprayer (104) is located at the outer end of the mounting ring (101), the paint sprayer (104) passes through the mounting ring (101), the top end of the fixing plate (103) is fixedly connected with a PLC controller (105), and the PLC controller (105) is electrically connected to the paint sprayer (104) and the natural gas concentration detection sensor (102).

2. A pipeline defect detection device according to claim 1, characterized in that: The paint sprayer (104) comprises a plurality of nozzles (10401) distributed in a ring shape, wherein the nozzles (10401) are mounted on the outer end of the mounting ring (101), and an electromagnetic valve is mounted on the outer end of the nozzles (10401), wherein the electromagnetic valve is electrically connected to the PLC controller (105), and the nozzles (10401) are adapted to the natural gas concentration detection sensor (102).

3. A pipeline defect detection device according to claim 2, characterized in that: The nozzle (10401) passes through the mounting ring (101), and a connecting pipe (10402) is installed at the outer end of the nozzle (10401). The connecting pipe (10402) is annular in shape and is located outside the mounting ring (101).

4. A pipeline defect detection device according to claim 3, characterized in that: The inner end of the connecting pipe (10402) is fixedly connected to a delivery pipe (10403), and the right end of the delivery pipe (10403) is fixedly connected to a storage tank (10404). The storage tank (10404) is installed on the top of the fixed plate (103) and is located on the left side of the PLC controller (105).

5. A pipeline defect detection device according to claim 1, characterized in that: The driving assembly (2) comprises a plurality of first spring telescopic rods (201) arranged at equal intervals, wherein the first spring telescopic rods (201) are mounted on the inner end of the fixed plate (103), and one end of the first spring telescopic rod (201) away from the fixed plate (103) is fixedly connected to a transverse plate (202).

6. A pipeline defect detection device according to claim 5, characterized in that: The outer end of the transverse plate (202) is fixedly connected with a motor (203) and a plurality of auxiliary rubber rollers (206); the motor (203) is electrically connected to a PLC controller (105); the output end of the motor (203) is fixedly connected with a main rubber roller (204); the main rubber roller (204) is mounted on the inner end of the transverse plate (202); the main rubber roller (204) is rotatably connected to the transverse plate (202); a pulley group (205) is mounted on one end of the main rubber roller (204); a plurality of auxiliary rubber rollers (206) are mounted on the inner end of the transverse plate (202); the auxiliary rubber roller (206) is rotatably connected to the transverse plate (202); and the auxiliary rubber roller (206) is connected to the pulley group (205).

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