Walking track belt of pipeline anti-corrosion layer peel strength detection device

Abstract

The utility model belongs to the technical field of pipeline detection, and particularly relates to a walking track belt of a device for detecting the peel strength of an anticorrosive coating of a pipeline. The walking track belt comprises a belt body which is annularly wound outside a pipeline through an inhaul cable mechanism, a plurality of supporting feet are arranged on the two sides of the belt body respectively, a gap is formed between the belt body and the pipeline through the supporting feet, the belt body is provided with one or more through grooves and at least one through working area, the through grooves are used for positioning walking wheels of the detection device, and the working area is used for stripping an anti-corrosion layer. The walking wheel comprises an upper-layer wheel and a lower-layer wheel which are located on the upper side and the lower side of the through groove respectively, a frame plate connecting the upper-layer wheel and the lower-layer wheel penetrates through the through groove, the belt body is further provided with at least one rack or a channel composed of a plurality of side-by-side tooth holes, and the rack is meshed with a driving gear of the detection device or the driving gear is in rolling fit with the tooth holes of the channel; the walking track belt is matched with a pipeline anti-corrosion layer peel strength detection device for use, and has the characteristics of firm connection and positioning, regular guide movement and suitability for detection of pipelines with various pipe diameters.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline detection, and specifically relates to a walking track belt of a pipeline anti-corrosion layer peeling strength detection device. Background Art

[0002] Pipelines are widely used in countries around the world as an effective and safe way to transport energy such as oil and gas, and the method of combined cathodic protection and external anti-corrosion layer protection is used as its supporting external pipeline anti-corrosion technology. As a more advanced anti-corrosion layer technology, three-layer polyethylene anti-corrosion layer (hereinafter referred to as "3LPE") is also increasingly used in pipeline external protection. However, serious leakage and even explosion incidents caused by the peeling of 3LPE anti-corrosion layer pose a great hidden danger to pipeline safety. Understanding the peeling mechanism of pipeline anti-corrosion layer and the influence of various factors on the peeling of anti-corrosion layer (especially 3LPE anti-corrosion layer) is of great significance for understanding the peeling process of anti-corrosion layer and preventing and eliminating hidden dangers.

[0003] The utility model with announcement number CN 217484153 U provides a pipeline anti-corrosion layer peeling strength detection device, in which a vertically distributed driving wheel and a driven wheel are arranged inside the walking frame of the device, and the two are linked by a transmission belt. A traction clamp connected to a tension sensor is arranged on the transmission belt, and the traction clamp is vertically lifted between the driving wheel and the driven wheel to complete the peeling stroke. The device has a compact structure and is easy to operate. However, during use, for pipes of different diameters, its walking frame must be matched with the corresponding track frame to achieve automatic walking. This undoubtedly increases the complexity of experimental operation and detection cost, and prolongs the detection cycle. Especially for pipes with small diameters, the corresponding track frame has high production cost and is not easy to install and use. The manual assistance of the walking frame in circular motion has a greater impact on parameters such as speed and pressure, resulting in inaccurate experimental data and other problems. Utility Model Content

[0004] The utility model aims to provide a walking track belt used in conjunction with a pipeline anti-corrosion layer peeling strength detection device, which has the characteristics of reliable connection and positioning, regular guiding movement, and is suitable for detection of pipelines with various diameters.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A walking track belt of a pipeline anti-corrosion layer peeling strength detection device, characterized in that it includes a belt body that is circumferentially wound around the outside of the pipeline through a cable mechanism, and a plurality of supporting feet are respectively arranged on both sides of the belt body, and the supporting feet form a gap between the belt body and the outer wall of the pipeline, and one or more through grooves and at least one through working area are arranged in the length direction of the belt body, and the through groove is used to position the walking wheels of the detection device, and the working area is used to realize the peeling of the anti-corrosion layer, and the walking wheels include an upper wheel and a lower wheel respectively located on the upper and lower sides of the through groove, and a frame plate connecting the two is placed through the through groove, and at least one rack or a groove composed of a plurality of side-by-side tooth holes is also arranged in the length direction of the belt body, and the rack is meshed with a driving gear of the detection device or the driving gear is roll-fitted with the tooth holes of the groove.

[0007] The additional technical features of the walking track belt constituting the above-mentioned pipeline anti-corrosion layer peeling strength detection device also include:

[0008] - The belt body is provided with an expansion groove connected with the through groove, the width of the expansion groove is not less than the width of the running wheel, and the width of the through groove is between the width of the frame plate and the width of the running wheel;

[0009] ——Connecting rods are respectively arranged at both ends of the belt body, the pulling cable mechanism comprises ropes respectively connected to the connecting rods, the ends of the ropes are tightened and loosened by locking buckles, the locking buckles comprise a Y-shaped frame connected to the ends of the ropes, a baffle is arranged at the end of the Y-shaped frame, a threaded hole is arranged on the baffle, and the threaded holes of the baffles on the two Y-shaped frames are connected and fastened by bolts;

[0010] - The two ends of the connecting rod are respectively placed in the positioning sleeve holes at the ends of the belt body, and a pull ring is provided at the end of the rope, and the pull ring is sleeved on the connecting rod;

[0011] The support leg comprises a screw rod, an elastic body arranged at the end of the screw rod, a plurality of through holes corresponding to the support leg are arranged on both sides of the belt body, the screw rod passes through the through holes and is fastened by a nut;

[0012] ——A transmission gear is arranged between the driving gear and the tooth hole of the rack or the groove to mesh with each other, the end of the rotating shaft of the transmission gear is connected to the end of the rotating shaft of the driving gear through a rocker rod, an arc groove is arranged on the frame plate, the rotating shaft of the transmission gear passes through the arc groove and is positioned by tightening a nut.

[0013] Compared with the prior art, the walking track belt of a pipeline anti-corrosion layer peeling strength testing device provided by the utility model has the following advantages: the belt body of the walking track belt is circumferentially wound around the pipeline through a cable mechanism, a through working area is arranged in the length direction of the belt body, which is used to connect the peeling strength testing equipment with the pipeline anti-corrosion layer, the belt body is also provided with a through groove, which is used to fix and guide the walking wheel of the peeling strength testing equipment, the belt body is also provided with a rack or a groove composed of a plurality of parallel tooth holes, which meshes with the driving gear of the peeling strength testing equipment to realize automatic walking of the equipment, the walking track belt is surrounded by the outside of the pipeline through a flexible belt body, which is convenient for installation and use of pipelines with different diameters, the through groove is engaged between the upper wheel and the lower wheel of the walking wheel, the guiding movement is regular, the positioning is firm, the rack or the tooth hole groove meshes with the driving gear, the transmission efficiency is high, the automatic walking of the peeling testing equipment is realized, the detection effect and experimental efficiency are improved, and it has the advantages of simple and compact structure, convenient use, safety and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a walking track belt of a pipeline anti-corrosion layer peeling strength detection device of the utility model;

[0015] Figure 2 Schematic diagram of the cable structure of the walking track belt. DETAILED DESCRIPTION

[0016] The following is a further detailed description of the walking track structure and working principle of the pipeline anti-corrosion layer peeling strength detection device provided by the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0017] In the description of the present invention, unless otherwise specified, the terms "upper / lower", "both sides / two ends" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set / provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0019] like Figure 1 As shown, the walking track belt structure of the novel pipeline anti-corrosion layer peeling strength detection device includes a belt body 1 which is circumferentially wound around the outside of the pipeline a through a cable mechanism 10, and a plurality of legs 2 are respectively arranged on both sides of the belt body 1. The legs 2 form a gap 3 between the belt body 1 and the outer wall of the pipeline a. One or more through grooves 4 and at least one through working area 5 are arranged in the length direction of the belt body 1. The through groove 4 is used to position the walking wheels of the detection device b, and the working area 5 is used to realize the peeling of the anti-corrosion layer. The walking wheels include an upper wheel c1 and a lower wheel c2 respectively located on the upper and lower sides of the through groove 4, and a frame plate c3 connecting the two is placed through the through groove 4. At least one rack or a groove 6 composed of a plurality of side-by-side tooth holes is also arranged in the length direction of the belt body 1, and the rack is meshed with the driving gear d1 of the detection device b or the driving gear d1 is roll-fitted with the tooth holes of the groove 6.

[0020] Its working principle is as follows: the belt body 1 of the walking track belt is circumferentially wound around the outside of the pipeline a, and the tension positioning is achieved through the cable mechanism 10 to adapt to pipelines a of different diameters. The two sides of the belt body 1 are in contact with the outer wall of the pipeline a through multiple legs 2 to achieve the positioning of the belt body 1; one or more through grooves 4 are provided on the surface of the belt body 1, which are used to engage between the upper wheel c1 and the lower wheel c2 of the walking wheel of the detection device, and the lower wheel c2 is placed in the gap 3 between the belt body 1 and the pipe wall; a through working area 5 is provided in the belt body 1, which is used to connect the detection device with the anti-corrosion layer of the pipeline a; a rack or a groove 6 composed of a plurality of side-by-side tooth holes is provided on the surface of the belt body 1, which is engaged with the driving gear d1 of the detection device b to achieve automatic walking of the detection device b.

[0021] It should be noted that, in order to maintain the movement balance of the peel strength testing device, in general, the running wheels are symmetrically arranged on both sides of the lower part, so the through grooves 4 on the belt body 1 are also arranged in two rows, and the frame plate c3 between the upper wheel c1 and the lower wheel c2 of the running wheel is placed through the through groove 4, and the through groove 4 plays the role of locking positioning and guiding movement;

[0022] According to the existing national standards, the peeling strength test of the anti-corrosion layer of pipeline a shows that the peeling length is within the range of 14 cm. Therefore, the circumferential length of the working area 5 on the belt body 1 is not less than 14 cm, preferably about 16 cm.

[0023] In the walking track belt structure constituting the above-mentioned pipeline a anti-corrosion layer peeling strength detection device,

[0024] ——In order to facilitate the installation and positioning of the running wheel of the detection device, the above-mentioned belt body 1 is provided with an expanded groove 41 connected with the through groove 4, and the width of the expanded groove 41 is not less than the width of the running wheel, and the width of the through groove 4 is between the width of the frame plate c3 and the width of the running wheel, that is, the lower wheel c2 of the running wheel is directly placed in the expanded groove 41, and the running wheel is driven to move to the through groove 4. The upper wheel c1 is located above the through groove 4, and the lower wheel c2 is placed in the gap 3 between the through groove 4 and the pipe wall. The frame plate c3 connecting the upper wheel c1 and the lower wheel c2 is placed in the through groove 4, so that the upper wheel c1 and the lower wheel c2 clamp the belt body 1 and can move along the through groove 4. In order to enhance the positioning effect, the running wheels (double-layer wheel structure) are placed at the four corners of the lower part of the detection device b, and the clamping is balanced and reliable, and the guiding movement is regular;

[0025] --like Figure 2 As shown, preferably, connecting rods 71 ​​are respectively installed at both ends of the belt body 1, which are arranged along the width direction of the belt body 1. The cable pulling mechanism 10 includes ropes 73 respectively connected to the connecting rods 71. The ends of the ropes 73 are tightened and loosened by locks to adapt to pipes a with different diameters. The locks include a Y-shaped frame 74 connected to the ends of the ropes 73. A baffle 75 is provided at the head of the Y-shaped frame 74. The baffle 75 is provided with a threaded hole. The threaded holes of the baffles 75 on the two Y-shaped frames are connected and fixed by bolts 76. By rotating the bolts 76, the belt body 1 can be tensioned and the spacing between the baffles 75 can be changed, thereby adjusting the circumferential length of the belt body 1.

[0026] ——In order to improve the convenience of installation, the two ends of the connecting rod 71 are respectively placed in the positioning sleeve holes 72 at the end of the belt body 1. The positioning sleeve holes 72 can be sleeves welded or bonded to the end of the belt body 1, or can be lock holes installed on the belt body 1 by bolts. A pull ring 77 is provided at the end of the rope 73, and the pull ring 77 is sleeved on the connecting rod 71, which is convenient for installation and disassembly of the cable pulling mechanism 10, and also convenient for adjusting the rope length for pipes a with different diameters;

[0027] ——Preferably, the support leg 2 comprises a screw rod, and an elastic body 21, such as rubber, plastic, etc., is arranged at the end of the screw rod. The elastic body 21 is in a truncated cone shape at the end of the screw rod to increase friction and elastic pre-tightening and positioning, similar to the function of a shoe. A plurality of through holes corresponding to the support leg 2 are arranged on both sides of the belt body 1, and the screw rod passes through the through holes and is fastened by a nut, that is, the size of the gap 3 between the belt body 1 and the tube wall can be adjusted by rotating the screw rod to adapt to the specifications of different running wheels of the detection device;

[0028] ——During the application of the walking track belt, it is best to set a transmission gear d2 to mesh and connect between the driving gear d1 of the above-mentioned detection device b and the tooth hole of the rack or groove 6, so as to facilitate the effective combination of the detection device driving mechanism and the walking track belt, that is, the end of the rotating shaft of the transmission gear d2 is connected to the end of the rotating shaft of the driving gear d1 through a rocker bar 81, and an arc groove 82 is set on the frame plate c3. The rotating shaft of the transmission gear d2 passes through the arc groove 82 and is positioned by tightening the nut 83. Before the detection device b is assembled with the walking track belt, the transmission gear d2 is lifted. After the detection device b enters the through groove 4 of the belt body 1, the rocker bar 81 is rotated to make the transmission gear d2 mesh with the rack of the belt body 1 or roll-combine with the tooth hole of the groove 6, and then tighten the nut 83.

[0029] The above-described implementation modes are only used to illustrate the technical solution of the utility model, and are not limiting conditions for the implementation of the utility model. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, should be included in the scope of the claims of the utility model.

Claims

1. A walking track belt of a pipeline anti-corrosion layer peeling strength testing device, characterized in that: It includes a belt body that is circumferentially wound around the outside of the pipeline through a cable mechanism, and a number of supporting feet are respectively arranged on both sides of the belt body. The supporting feet form a gap between the belt body and the outer wall of the pipeline. One or more through grooves and at least one through working area are arranged in the length direction of the belt body. The through groove is used to position the walking wheels of the detection device, and the working area is used to realize the stripping of the anti-corrosion layer. The walking wheels include an upper wheel and a lower wheel respectively located on the upper and lower sides of the through groove, and a frame plate connecting the two is placed through the through groove. At least one rack or a groove composed of a number of side-by-side tooth holes is also arranged in the length direction of the belt body, and the rack is meshed with the driving gear of the detection device or the driving gear is roll-fitted with the tooth holes of the groove.

2. The walking track belt of the pipeline anti-corrosion layer peeling strength detection device according to claim 1 is characterized in that: The belt body is provided with an expansion groove connected with the through groove, the width of the expansion groove is not less than the width of the running wheel, and the width of the through groove is between the width of the frame plate and the width of the running wheel.

3. The walking track belt of the pipeline anti-corrosion layer peeling strength detection device according to claim 1 is characterized in that: Connecting rods are respectively arranged at both ends of the belt body, and the cable mechanism includes ropes respectively connected to the connecting rods, and the ends of the ropes are tightened and loosened by locking buckles. The locking buckles include a Y-shaped frame connected to the ends of the ropes, and a baffle is provided at the end of the Y-shaped frame, and threaded holes are arranged on the baffle. The threaded holes of the baffles on the two Y-shaped frames are fastened by bolts.

4. The walking track belt of the pipeline anti-corrosion layer peeling strength detection device according to claim 3 is characterized in that: The two ends of the connecting rod are respectively placed in the positioning sleeve holes of the end of the belt body, and a pull ring is arranged at the end of the rope, and the pull ring is sleeved on the connecting rod.

5. The walking track belt of the pipeline anti-corrosion layer peeling strength detection device according to claim 1 is characterized in that: The support leg comprises a screw rod, an elastic body arranged at the end of the screw rod, a plurality of through holes corresponding to the support leg are arranged on both sides of the belt body, and the screw rod passes through the through holes and is fastened by a nut.

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