Magnetic flux leakage detection equipment for inner wall of pipeline

Abstract

The utility model relates to the technical field of pipeline detection, and discloses a magnetic flux leakage detection device for the inner wall of a pipeline, which comprises a protective shell and a sensor, four connecting rods are fixedly connected in the protective shell, the opposite sides of the four connecting rods are connected with connectors in a sliding manner, and the connectors are connected with the sensor. The opposite sides of the four connecting heads are slidably connected to the outer portion of the sensor, a detection ring is fixedly connected between the opposite sides of the four connecting rods, a clamping mechanism is arranged in the sensor and used for quickly mounting and dismounting the detection ring, and a cleaning mechanism is arranged outside the sensor and used for quickly mounting and dismounting the detection ring. And the cleaning mechanism is used for cleaning dirty blocks in the pipeline. According to the utility model, the sliding rod is pushed into the sensor through the handle, so that the sliding block compresses the reset spring, the connecting rod is driven to drive the clamping rod to drive the two hoops to be separated from the clamping grooves through the U-shaped frame, the cleaning and maintenance of the detection mechanism are facilitated, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline detection technical field especially relates to a kind of magnetic flux leakage detection equipment for pipeline inner wall. BACKGROUND

[0002] The magnetic flux leakage detection equipment of pipeline inner wall is a kind of nondestructive testing technique for detecting internal defects of pipeline, mainly through the change of magnetic field to find the corrosion, crack, weld defect, hole and other problems in pipeline.Magnetic flux leakage detection technology is usually applicable to metal pipeline, especially in petroleum, natural gas, chemical industry, electric power and other industries, widely used in the health monitoring and maintenance management of pipeline.

[0003] The magnetic flux leakage detection equipment is a reliable and efficient pipeline detection tool, which can effectively improve the efficiency and accuracy of pipeline maintenance, and plays an important role in ensuring the safe operation of pipeline.

[0004] The detection mechanism of the magnetic flux leakage detection equipment of pipeline inner wall in the prior art is mostly installed on the outside of detection instrument through fixing mechanism or integral splicing structure, which is inconvenient to clean and maintain, and the utility of the device is low. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a kind of magnetic flux leakage detection equipment for pipeline inner wall, to improve the problem of low utility of device caused by the detection mechanism of magnetic flux leakage detection equipment of pipeline inner wall in prior art being mostly installed on the outside of detection instrument through fixing mechanism or integral splicing structure, which is inconvenient to clean and maintain.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of magnetic flux leakage detection equipment for pipeline inner wall, including protection shell and sensor, the inside of protection shell is fixedly connected with four connecting rods, the opposite side of four connecting rods is slidably connected with connecting head, the opposite side of four connecting heads is slidably connected on the outside of sensor, detection ring is fixedly connected between the opposite side of four connecting rods, the inside of sensor is provided with clamping mechanism, the clamping mechanism is used to quickly install and remove detection ring, the outside of sensor is provided with cleaning mechanism, and the cleaning mechanism is used to clean dirt and clumps inside pipeline.

[0007] As a further description of the above technical scheme:

[0008] The inside of connecting rod is fixedly connected with extrusion spring, one end of extrusion spring close to sensor is fixedly connected with limit block, the side of limit block away from extrusion spring is fixedly connected with the side of connecting head away from sensor.

[0009] As a further description of the above technical scheme:

[0010] The clamping mechanism comprises four sliding rods, the four sliding rods are slidably connected in the sensor, opposite sides of the four sliding rods are fixedly connected with sliding blocks, the sliding blocks are fixedly connected with return springs away from the sliding rods, both sides of the sliding blocks are rotatably connected with connecting rods, one end of the two connecting rods away from the sliding blocks is rotatably connected with a U-shaped frame, one side of the two U-shaped frames away from the connecting rods is fixedly connected with a clamping rod, and opposite sides of the two clamping rods are fixedly connected with hoops.

[0011] As a further description of the above technical solution:

[0012] The sliding block is slidably connected in the sensor, and the connecting rod is slidably connected in the sensor.

[0013] As a further description of the above technical solution:

[0014] The sliding rod is fixedly connected with a handle away from the sliding block.

[0015] As a further description of the above technical solution:

[0016] The sensor is fixedly connected with eight driving rods outside, and one end of the driving rod away from the sensor is fixedly connected with a driving wheel.

[0017] As a further description of the above technical solution:

[0018] The cleaning mechanism comprises four cleaning rods, the four cleaning rods are fixedly connected outside the sensor, and the four cleaning rods are fixedly connected with a cleaning scraper between one end away from the sensor.

[0019] As a further description of the above technical solution:

[0020] The limiting block is slidably connected in the connecting rod, and the connecting head penetrates one end of the connecting rod close to the sensor.

[0021] The utility model has the advantages of the following:

[0022] 1、The utility model discloses a drive rod is started through the driving wheel and drives the protection shell to move in the inside pipe, and the detection ring is used for detecting the inner wall of the pipe, and the detection data is collected through the sensor, and the detection ring can be removed for maintenance and cleaning. When the detection ring needs to be removed for maintenance and cleaning, the handle is pushed to the inside sensor to make the sliding block compress the reset spring, drives the connecting rod to make the clamping rod drive two hoops to come off from the clamping groove through the U type frame, and the connecting rod is removed together with the detection ring, and the detection ring is installed through the same way after maintenance and cleaning, realizes the effect that the detection ring is quickly removed through the clamping mechanism, and the cleaning maintenance of the detection mechanism is facilitated, and the practicality of the device is improved.

[0023] 2、The utility model discloses a part of the inner wall of the pipe is dirty or has the situation of agglomeration, and the detection ring is not accurate, and when the overall device moves forward in the inside pipe, the cleaning rod installed on the sensor makes the cleaning scraper contact the inner wall of the pipe in advance than the detection ring, and the dirty agglomeration of the inner wall of the pipe is cleaned while the device moves, avoids the influence on the detection of the inner wall of the pipe by the detection ring, realizes the effect that the inner wall of the pipe is cleaned in advance through the cleaning mechanism, improves the efficiency of the pipe detection, and the practicality of the device is improved. ACCURACY

[0024] Figure 1 It is a perspective view of the magnetic flux leakage detection equipment for the inner wall of the pipe for the utility model;

[0025] Figure 2 It is the detection mechanism schematic view of the magnetic flux leakage detection equipment for the inner wall of the pipe for the utility model;

[0026] Figure 3 It is the connecting rod sectional view of the magnetic flux leakage detection equipment for the inner wall of the pipe for the utility model;

[0027] Figure 4 It is the clamping mechanism schematic view of the magnetic flux leakage detection equipment for the inner wall of the pipe for the utility model;

[0028] Figure 5 It is the moving mechanism schematic view of the magnetic flux leakage detection equipment for the inner wall of the pipe for the utility model;

[0029] Figure 6 It is the cleaning mechanism schematic view of the magnetic flux leakage detection equipment for the inner wall of the pipe for the utility model.

[0030] Legend:

[0031] 1. Protective shell; 2. Sensor; 3. Connecting rod; 4. Compression spring; 5. Connector; 6. Slot; 7. Slide rod; 8. Slider; 9. Return spring; 10. Connecting rod; 11. U-shaped frame; 12. Clamping rod; 13. Clamp; 14. Handle; 15. Detection ring; 16. Drive rod; 17. Drive wheel; 18. Cleaning rod; 19. Cleaning scraper; 20. Limit block. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 - Figure 4The utility model provides a kind of embodiment for the magnetic flux leakage detection equipment of pipeline inner wall, including protective shell 1 and sensor 2, protective shell 1 plays the role of protection internal structure, sensor 2 plays the role of detection pipeline inside, the inside fixed connection of protective shell 1 is equipped with four connecting rods 3, connecting rod 3 plays the role of connecting detection ring 15, the opposite side of four connecting rods 3 is slidably connected with connector 5, connector 5 plays the role of connecting sensor 2, the opposite side of four connector 5 is slidably connected in the outside of sensor 2, the opposite side between four connecting rods 3 is fixedly connected with detection ring 15, the inside of sensor 2 is provided with clamping mechanism, clamping mechanism is used for quickly installing and removing detection ring 15, the outside of sensor 2 is provided with cleaning mechanism, cleaning mechanism is used for cleaning dirty agglomerate in pipeline inside. The inside fixed connection of connecting rod 3 is equipped with extrusion spring 4, extrusion spring 4 plays the role of providing elastic force and pushing limit block 20, one end of extrusion spring 4 close to sensor 2 is fixedly connected with limit block 20, limit block 20 plays the role of preventing extrusion spring 4 from falling off, one side of limit block 20 away from extrusion spring 4 is fixedly connected in the one side of connector 5 away from sensor 2. Clamping mechanism includes four slide rods 7, slide rod 7 plays the role of connecting sliding block 8, four slide rods 7 are slidably connected in the inside of sensor 2, the opposite side of four slide rods 7 is fixedly connected with sliding block 8, sliding block 8 is connected with reset spring 9, one side of sliding block 8 away from slide rod 7 is fixedly connected with reset spring 9, reset spring 9 plays the role of providing elastic force and pushing sliding block 8, the both sides of sliding block 8 are rotatably connected with connecting rod 10, connecting rod 10 plays the role of connecting U-shaped frame 11, the one end of two connecting rods 10 away from sliding block 8 is rotatably connected with U-shaped frame 11, U-shaped frame 11 plays the role of connecting clamping rod 12, the one side of two U-shaped frames 11 away from connecting rod 10 is fixedly connected with clamping rod 12, clamping rod 12 plays the role of connecting hoop 13, the opposite side of two clamping rods 12 is fixedly connected with hoop 13, hoop 13 plays the role of clamping fixation, the outside of connector 5 is provided with two clamping grooves 6, and two hoop 13 are clamped with clamping groove 6, sliding block 8 is slidably connected in the inside of sensor 2, connecting rod 10 is slidably connected in the inside of sensor 2, the one side of slide rod 7 away from sliding block 8 is fixedly connected with handle 14.

[0034] Refer to Figure 1 , Figure 5 - Figure 6Eight driving rods 16 are fixedly connected outside the sensor 2, the driving rods 16 serve to connect driving wheels 17, one ends of the driving rods 16 away from the sensor 2 are fixedly connected with the driving wheels 17, the driving wheels 17 serve to move. The cleaning mechanism comprises four cleaning rods 18, the cleaning rods 18 serve to connect cleaning scrapers 19, the four cleaning rods 18 are fixedly connected outside the sensor 2, the four cleaning rods 18 are fixedly connected with the cleaning scrapers 19 between one ends of the four cleaning rods 18 away from the sensor 2. Limiting blocks 20 are slidingly connected inside the connecting rod 3, the connecting head 5 penetrates the connecting rod 3 near one end of the sensor 2.

[0035] Working principle: the device is arranged inside a pipeline to be detected, the driving rods 16 are started to drive the protective shell 1 to move inside the pipeline through the driving wheels 17, the pipeline inner wall is detected through the detection ring 15, and detection data can be collected through the sensor 2. When the detection ring 15 needs to be removed for maintenance and cleaning, the slide rod 7 is pushed into the sensor 2 through the handle 14, the slide block 8 is compressed to reset the compression spring 9, the connecting rod 10 is driven to pass through the U-shaped frame 11, the clamping rod 12 is driven to drive the two clamps 13 to be separated from the clamping groove 6, the connecting head 5 is pushed to compress the limiting block 20 to compress the compression spring 4, and the detection ring 15 can be removed together with the connecting rod 3, and the detection ring 15 can be installed through the same way after maintenance and cleaning.

[0036] When the inner wall of part of the pipeline is dirty or blocked, the detection ring 15 cannot accurately detect, when the overall device moves forward inside the pipeline, the cleaning rods 18 installed on the sensor 2 make the cleaning scrapers 19 contact the pipeline inner wall earlier than the detection ring 15, the dirty and blockage of the pipeline inner wall are cleaned at the same time as the device moves, and the detection of the pipeline inner wall by the detection ring 15 is avoided.

[0037] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetic flux leakage detection device for the internal wall of a pipe comprising a protective casing (1) and a sensor (2), characterized in that: The inside of the protective shell (1) is fixedly connected with four connecting rods (3), the opposite sides of the four connecting rods (3) are slidably connected with connecting heads (5), the opposite sides of the four connecting heads (5) are slidably connected outside the sensor (2), the opposite sides of the four connecting rods (3) are fixedly connected with detection rings (15), the inside of the sensor (2) is provided with a clamping mechanism, the clamping mechanism is used for quickly installing and removing the detection ring (15), and the outside of the sensor (2) is provided with a cleaning mechanism, and the cleaning mechanism is used for cleaning the dirt block in the pipeline.

2. A magnetic flux leakage inspection apparatus for the internal wall of a pipe according to claim 1, characterized in that: The inside of the connecting rod (3) is fixedly connected with an extrusion spring (4), one end of the extrusion spring (4) close to the sensor (2) is fixedly connected with a limiting block (20), and one side of the limiting block (20) away from the extrusion spring (4) is fixedly connected to one side of the connecting head (5) away from the sensor (2).

3. A magnetic flux leakage detection apparatus for the internal wall of a pipe according to claim 1, characterized in that: The clamping mechanism comprises four slide rods (7), the four slide rods (7) are slidably connected inside the sensor (2), the opposite sides of the four slide rods (7) are fixedly connected with slide blocks (8), one side of the slide block (8) away from the slide rod (7) is fixedly connected with a reset spring (9), both sides of the slide block (8) are rotatably connected with connecting rods (10), one end of the two connecting rods (10) away from the slide block (8) is rotatably connected with a U-shaped frame (11), one side of the two U-shaped frames (11) away from the connecting rod (10) is fixedly connected with a clamping rod (12), and the opposite sides of the two clamping rods (12) are fixedly connected with hoops (13). Two said hoops (13) are clamped with the clamping groove (6).

4. A magnetic flux leakage detection apparatus for the internal wall of a pipe according to claim 3, characterized in that: The slide block (8) is slidably connected inside the sensor (2), and the connecting rod (10) is slidably connected inside the sensor (2).

5. A magnetic flux leakage detection apparatus for the internal wall of a pipe according to claim 3, characterized in that: The slide rod (7) is fixedly connected with a handle (14) away from the slide block (8).

6. A magnetic flux leakage detection apparatus for the internal wall of a pipe according to claim 1, characterized in that: The outside of the sensor (2) is fixedly connected with eight drive rods (16), and one end of the drive rod (16) away from the sensor (2) is fixedly connected with a drive wheel (17).

7. A magnetic flux leakage detection apparatus for the internal wall of a pipe according to claim 1, characterized in that: The cleaning mechanism comprises four cleaning rods (18), the four cleaning rods (18) are fixedly connected outside the sensor (2), and the cleaning scraper (19) is fixedly connected between one end of the four cleaning rods (18) away from the sensor (2).

8. A magnetic flux leakage detection apparatus for the internal wall of a pipe according to claim 2, characterized in that: The limiting block (20) is slidably connected inside the connecting rod (3), and the connecting head (5) penetrates one end of the connecting rod (3) close to the sensor (2).

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