A pipeline inner wall inspection device

Abstract

The present application relates to a kind of pipeline inner wall inspection device, including center column, torsional spring roller structure, limit plate and fixed plate.The pipeline inner wall inspection device of the present application can be moved to check by adhering to pipeline inner wall, fixed plate is equipped with illuminating lamp, camera, fixed plate center is equipped with sheep eye nail, for pulling.Roller is installed at the both ends of V-shaped torsional spring, flexible and convenient, roller uses rubber wheel, with certain elasticity, and can reduce the damage to pipeline inner wall.Limit plate has one limit slot in four directions, so that connecting rod can move in limit slot along specified direction, does not occur deflection, guarantee the stability of structure.The device can be used for checking in a certain range to a variety of caliber pipes and larger inclination or vertical pipes.

Description

TECHNICAL FIELD

[0001] The present application relates to a pipeline inspection device, in particular to a pipeline inner wall inspection device. BACKGROUND

[0002] The pipeline is often used for conveying flammable, explosive, volatile or easy to static electricity gathering fluid such as crude oil, liquefied gas, natural gas, etc. Some of them even have some toxicity, so the pipeline requires good sealing, and cannot have defects such as cracks and corrosion. Once leakage occurs, it is easy to cause fire and explosion, causing damage to personnel and property. Therefore, the pipeline needs to be inspected to check whether there are defects in time. The pipeline inspection includes the inspection of the outside and the inside of the pipeline, and the inside space of the pipeline is small and not convenient for manual inspection, so some inspection equipment needs to be used to enter the inside of the pipeline for inspection. At present, the device for inspecting the inner wall of the pipeline is mainly wheeled or tracked, but most of them have complex structure and heavy equipment. There are few devices that can adhere to the inner wall of the pipeline and move, and there is a large gap between the device and the pipeline, so most of them can only be used for inspecting the horizontal pipeline, and it is difficult to inspect the pipeline with large inclination or vertical pipeline. SUMMARY

[0003] The purpose of the present application is to provide a pipeline inner wall inspection device with simple and reliable structure, which can be applied to pipelines with various diameters within a certain range, has simple structure and low cost.

[0004] To solve the above technical problems, the technical scheme provided by the present application is:

[0005] A pipeline inner wall inspection device, comprising a center column, a torsion spring roller structure, a limiting plate and a fixed plate; a through center groove is formed in the middle of the center column, a through left groove and a through right groove are respectively formed in the left part and the right part of the center column, the through directions of the left groove and the right groove are the same, and are perpendicular to the through direction of the center groove; a center cylindrical pin is arranged in the center groove, a left cylindrical pin is arranged in the left groove, and a right cylindrical pin is arranged in the right groove; a limiting plate is arranged between the left groove and the center groove and between the right groove and the center groove; a torsion spring roller structure is arranged in the center groove, the left groove and the right groove respectively; the torsion spring roller structure comprises a V-shaped torsion spring and a roller connected to the two ends of the V-shaped torsion spring; the torsion spring end of the torsion spring roller structure in the center groove is sleeved on the center cylindrical pin, the torsion spring ends of the torsion spring roller structures in the left groove and the right groove are sleeved on the left cylindrical pin and the right cylindrical pin respectively, and the roller of the torsion spring roller structure passes through the limiting groove in the limiting plate; the left and right ends of the center column are respectively provided with a fixed plate, and the fixed plate is provided with a lighting lamp, a sheep eye nail and a camera.

[0006] Further, the center of the left limiting plate and the right limiting plate has a through slot with the same section as the center column, so that the left limiting plate and the right limiting plate are clamped on the center column; the connection between the center column, the left cylindrical pin and the right cylindrical pin adopts interference fit.

[0007] Further, the center slot is provided with left and right center cylindrical pins, the center slot is provided with left and right torsion spring roller structures, the torsion spring end of the left torsion spring roller structure is sleeved on the left center cylindrical pin, and the torsion spring end of the right torsion spring roller structure is sleeved on the right center cylindrical pin; the left slot and the center slot are provided with the left limiting plate, and the right slot and the center slot are provided with the right limiting plate.

[0008] Further, the center column is a square prism, the center through slot of the left limiting plate and the right limiting plate is square in shape; and the limiting plate is fixed on the center column by means of an angle steel support and screws.

[0009] Further, the left limiting plate and the right limiting plate have limiting slots extending perpendicularly in four directions along the vertical square four sides of the center through slot.

[0010] Further, the roller of the left side connecting rod torsion spring in the center slot passes through the limiting slot of the left limiting plate to the left; and the roller of the right side connecting rod torsion spring in the center slot passes through the limiting slot of the right limiting plate to the right.

[0011] Further, the torsion spring end of the torsion spring roller structure in the left slot is sleeved on the left cylindrical pin, and the roller thereof passes through the limiting slot of the left limiting plate to the right; and the torsion spring end of the torsion spring roller structure in the right slot is sleeved on the right cylindrical pin, and the roller thereof passes through the limiting slot of the right limiting plate to the left.

[0012] Further, in the torsion spring roller structure, the roller is fixed at the end of the V-shaped torsion spring through a connecting rod and a connecting rod cylindrical pin, and the roller is made of rubber.

[0013] Further, the connecting rod cylindrical pin and the connecting rod adopt interference fit, and the connecting rod cylindrical pin and the torsion spring adopt clearance fit.

[0014] Further, the roller is fixed on the connecting rod through a pin and a split pin, both ends of the roller are respectively provided with a bearing, the center hole of the roller is provided with a stepped hole on both sides for positioning the outer ring of the bearing, and the inner ring of the bearing is respectively positioned by a circlip.

[0015] Beneficial effects:

[0016] The pipeline inner wall inspection device can adhere to the pipeline inner wall for moving inspection, the fixed plate is provided with a lighting lamp and a camera, the center of the fixed plate is provided with a sheep eye nail for pulling, the rollers are installed at the two ends of the V-shaped torsion spring, are flexible and convenient, the rollers are made of rubber wheels, have certain elasticity, and can reduce damage to the pipeline inner wall. The limiting plate has one limiting slot in four directions, so that the connecting rod can move in the limiting slot in the specified direction and does not deflect, so that the stability of the structure is ensured. The device can be used for inspecting various caliber pipelines and large inclination or vertical pipelines within a certain range. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The pipeline inner wall inspection device of the present application.

[0018] Figure 2 The structure schematic view of the torsion spring roller structure.

[0019] Figure 3 The structure schematic view of the roller assembly structure.

[0020] Figure 4 The roller distribution schematic view.

[0021] Figure 5 The torsion spring installation schematic view.

[0022] Figure 6 The working schematic view.

[0023] In the figure: 1-lighting lamp, 2-sheep eye nail, 3-camera, 4-center column, 5-roller, 6-connecting rod, 7-limiting plate, 8-center cylindrical pin, 9-connecting rod cylindrical pin, 10-angle steel support, 11-V-shaped torsion spring, 12-fixed plate, 13-split pin, 14-bearing, 15-clasp spring, 16-pin, 17-pipeline, 18-center slot, 19-left slot, 20-right slot, 21-left cylindrical pin, 22-right cylindrical pin, 23-limiting slot. DETAILED DESCRIPTION

[0024] The present application will be further described below in combination with specific embodiments.

[0025] The utility model provides a pipeline inner wall inspection device, including center column 4, torsional spring roller structure, limiting plate and fixed plate 12, the middle part of center column 4 is equipped with the through center groove 18, and the left part and right part of center column 4 are equipped with the through left slot 19 and the through right slot 20 respectively, the through direction of left slot 19 and right slot 20 is same, and is perpendicular with the through direction of center groove 18, the center groove 18 is equipped with center cylindrical pin, left slot 19 is equipped with left cylindrical pin 21, and right slot 20 is equipped with right cylindrical pin 22, and the limiting plate is arranged between left slot 19 and center groove 18, and the limiting plate is arranged between right slot 20 and center groove 18, the center groove 18, left slot 19, right slot 20 are equipped with torsional spring roller structure respectively, the torsional spring roller structure includes V type torsional spring 11 and the roller 5 connected in the two ends of V type torsional spring 11, the end of torsional spring 11 of the torsional spring roller structure in the center groove 18 is sleeved on center cylindrical pin, the end of torsional spring 11 of the torsional spring roller structure in left slot 19 and right slot 20 is sleeved on left cylindrical pin 21 and right cylindrical pin 22 respectively, and the roller 5 of torsional spring roller structure passes through the limiting slot 23 in the limiting plate, the left and right ends of center column 4 are installed fixed plate 12 respectively, and fixed plate 12 is equipped with illuminating lamp 1, sheep eye nail 2 and camera 3.

[0026] The center of the left limiting plate and the right limiting plate has a slot that is the same as the cross-section of the center column 4, so that the left limiting plate and the right limiting plate are clamped on the center column 4. The center cylindrical pin, the left cylindrical pin 21, and the right cylindrical pin 22 are connected to the center column 4 by interference fit.

[0027] The center groove 18 is provided with left and right center cylindrical pins, and the center groove 18 is provided with left and right torsional spring roller structures. The left end of the torsional spring 11 of the left torsional spring roller structure is sleeved on the left center cylindrical pin, and the right end of the torsional spring 11 of the right torsional spring roller structure is sleeved on the right center cylindrical pin. The left limiting plate is arranged between the left slot 19 and the center groove 18, and the right limiting plate is arranged between the right slot 20 and the center groove 18.

[0028] The center column 4 is a square prism, and the shape of the center slot of the left limiting plate and the right limiting plate is square. The limiting plate is fixed on the center column 4 by an angle steel support 10 through screws.

[0029] The left limiting plate and the right limiting plate have limiting slots 23 that are perpendicular to the four sides of the center slot and extend in four directions.

[0030] The roller 5 of the left side connecting rod torsional spring 11 in the center groove 18 passes through the limiting slot 23 of the left limiting plate to the left. The roller 5 of the right side connecting rod torsional spring 11 in the center groove 18 passes through the limiting slot 23 of the right limiting plate to the right.

[0031] The end of the torsion spring 11 of the torsion spring roller structure in the left slot 19 is sleeved on the left cylindrical pin 21, and the roller 5 penetrates through the limiting slot 23 of the left limiting plate to the right; the end of the torsion spring 11 of the torsion spring roller structure in the right slot 20 is sleeved on the right cylindrical pin 22, and the roller 5 penetrates through the limiting slot 23 of the right limiting plate to the left.

[0032] The left and right halves of the device are symmetrically distributed and have the same structure.

[0033] In the torsion spring roller structure, the roller 5 is fixed at the end of the V-shaped torsion spring 11 through the connecting rod 6 and the connecting rod cylindrical pin 9.

[0034] The connecting rod cylindrical pin 9 and the connecting rod 6 adopt interference fit, and the connecting rod cylindrical pin 9 and the torsion spring 11 adopt clearance fit.

[0035] The roller 5 is fixed on the connecting rod 6 through the pin 16 and the split pin 13, and when the installation is completed, the two legs of the split pin 13 are pulled apart to fix the pin 16. One bearing 14 is installed at each end of the roller 5, and step holes are arranged on both sides of the center hole of the roller 5 for positioning the outer ring of the bearing, and the inner ring of the bearing is positioned by a circlip 15 respectively to prevent the axial movement of the roller 5, as shown in Figure 3

[0036] The device uses the compressed V-shaped torsion spring 11 to sequentially send the roller 5 into the pipeline 17, and after entering the pipeline 17, the roller 5 automatically adheres to the inner wall of the pipeline 17 under the action of the elastic force of the torsion spring 11, as shown in Figure 6

[0037] One fixed plate 12 is arranged at each end of the device, and a lighting lamp 1 and a camera 3 are respectively arranged on the fixed plate for illuminating the inner wall of the pipeline and shooting inspection, and a sheep eye nail 2 is respectively arranged in the center of the fixed plate, and the sheep eye nails 2 at both ends are buckled by a rope to pull the device to move at both ends of the pipeline 17 during work.

[0038] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any skilled person in the art can make any simple modification, equivalent replacement and improvement to the above embodiment according to the technical essence of the present application without departing from the technical solution of the present application, and all of the above still belong to the protection scope of the present application.​​

Claims

1. A pipe inner wall inspection device, characterized in that: The system includes a central column, a torsion spring roller structure, a limiting plate, and a fixing plate. The central column has a through-center groove in its middle section, and through-center grooves on its left and right sides, respectively. The through-center and right grooves are in the same direction and perpendicular to the through-center groove. A central cylindrical pin is located within the central groove, a left cylindrical pin within the left groove, and a right cylindrical pin within the right groove. A limiting plate is located between the left groove and the central groove, and between the right groove and the central groove. Torsion spring roller structures are respectively installed within the central groove, left groove, and right groove. Each torsion spring roller structure includes a V-shaped torsion spring and rollers connected to the two ends of the V-shaped torsion spring. The torsion spring of the torsion spring roller structure within the central groove... The torsion spring ends of the torsion spring roller structures in the left and right slots are respectively fitted onto the left and right cylindrical pins. The rollers of the torsion spring roller structures pass through the limiting grooves in the limiting plate. Fixing plates are installed at the left and right ends of the central column, and the fixing plates are equipped with lighting lamps, eyelet nails, and cameras. There are two central cylindrical pins, one on the left and one on the right, in the central slot. There are two torsion spring roller structures, one on the left and one on the right. The torsion spring end of the left torsion spring roller structure is fitted onto the left central cylindrical pin, and the torsion spring end of the right torsion spring roller structure is fitted onto the right central cylindrical pin. A left limiting plate is provided between the left slot and the central slot, and a right limiting plate is provided between the right slot and the central slot. The rollers are made of rubber.

2. The pipeline inner wall inspection device according to claim 1, characterized in that: The left and right limiting plates each have a through groove at their center that has the same cross-section as the central column, so that the left and right limiting plates are engaged on the central column; the connection between the central cylindrical pin, the left cylindrical pin, the right cylindrical pin and the central column adopts an interference fit.

3. The pipeline inner wall inspection device according to claim 1, characterized in that: The central column is a square prism, and the central slots of the left and right limiting plates are square in shape; the limiting plates are fixed to the central column by screws using angle steel brackets.

4. The pipeline inner wall inspection device according to claim 3, characterized in that: The left and right limiting plates have limiting grooves that extend vertically in four directions along the four sides of a square through-groove.

5. The pipeline inner wall inspection device according to claim 4, characterized in that: The roller of the left torsion spring roller structure in the central groove passes through the limiting groove of the left limiting plate to the left; the roller of the right torsion spring roller structure in the central groove passes through the limiting groove of the right limiting plate to the right.

6. The pipeline inner wall inspection device according to claim 5, characterized in that: The torsion spring end of the torsion spring roller structure in the left groove is fitted onto the left cylindrical pin, and its roller passes through the limiting groove of the left limiting plate to the right; the torsion spring end of the torsion spring roller structure in the right groove is fitted onto the right cylindrical pin, and its roller passes through the limiting groove of the right limiting plate to the left.

7. The pipeline inner wall inspection device according to claim 1, characterized in that: In the aforementioned torsion spring roller structure, the roller is fixed to the end of the V-shaped torsion spring via a connecting rod and a connecting rod cylindrical pin.

8. The pipeline inner wall inspection device according to claim 7, characterized in that: The connecting rod cylindrical pin and the connecting rod are fitted with an interference fit, and the connecting rod cylindrical pin and the torsion spring are fitted with a clearance fit.

9. The pipeline inner wall inspection device according to claim 7, characterized in that: The roller is fixed to the connecting rod by pins and cotter pins. A bearing is installed at each end of the roller. Stepped holes are provided on both sides of the center hole of the roller to position the outer ring of the bearing. The inner ring of the bearing is positioned by a snap ring.

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