Training and checking device for buried pipeline anticorrosive coating

Abstract

The utility model discloses a buried pipeline anticorrosion layer training examination device comprising a wiring board, the wiring board is provided with a pipeline wiring terminal and a damage point wiring terminal, the pipeline wiring terminal is connected with a pipeline simulation cable, the pipeline simulation cable is connected with the ground, the pipeline simulation cable is provided with a damage point, and the damage point wiring terminal is connected with the pipeline simulation cable. The damage point is connected with the damage point simulation cable, the damage point simulation cable is connected with the damage point wiring terminal, and the pipeline simulation cable and the damage point simulation cable are both buried underground. The beneficial effects of the utility model are that a plurality of pipeline simulation cables and damage points can be buried in the same pipe trench at different burial depths, and the current signal transmitted by the transmitter is stronger than that of the buried short pipeline, so that accurate assessment can be realized; the construction difficulty caused by using a pipeline to arrange an examination station is avoided; the evaluation personnel randomly connect any cable, so that the randomness of the examination is increased, and the examined personnel cannot skillfully pass the examination by using memory speculation, thereby improving the preciseness and scientificity of the examination.

Description

Technical Field

[0001] The utility model belongs to the technical field of vocational skill training and assessment, and specifically relates to a training and assessment device for underground pipeline anti-corrosion layers, which is mainly used for training and assessment of the use of pipeline and anti-corrosion layer damage point detectors for gas pipeline network operators, a core type of workers in the national vocational skill standard "Gas Storage and Transportation Workers". Background Art

[0002] With the advancement of urban infrastructure construction, various types of steel pipelines are densely distributed underground. How to detect and evaluate the effectiveness of the anti-corrosion layer of buried pipelines, especially gas pipelines, is particularly important. At present, when conducting training and assessment on the anti-corrosion layer detector for buried steel pipelines, the overall pipelines, lines and damaged points have been set and cannot be flexibly changed, resulting in a relatively low difficulty in the overall assessment. The assessed personnel can easily pass the assessment by memory, resulting in an unscientific and imprecise assessment. Utility Model Content

[0003] The purpose of the utility model is to provide a training and assessment device for the anti-corrosion layer of a buried pipeline, which solves the problems of flexibility, scientificity and rigor in the training and assessment of the anti-corrosion layer of a buried pipeline.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A training and assessment device for an anti-corrosion layer of a buried pipeline comprises a wiring board, on which are arranged a plurality of pipeline wiring terminals and a plurality of damaged point wiring terminals, the pipeline wiring terminals being connected to one end of a pipeline simulation cable, the other end of the pipeline simulation cable being connected to the earth, a damaged point being arranged on the pipeline simulation cable, the damaged point being connected to one end of the damaged point simulation cable, the other end of the damaged point simulation cable being connected to the damaged point wiring terminal, and both the pipeline simulation cable and the damaged point simulation cable being buried underground.

[0006] Furthermore, the pipeline simulation cables are provided with a plurality of cables.

[0007] Furthermore, the pipeline simulation cable is provided with a plurality of damage points, and each damage point is connected to a damage point simulation cable.

[0008] Furthermore, the pipeline simulation cable is a welding handle cable, and the damaged point simulation cable is an ordinary cable.

[0009] Furthermore, the pipeline simulation cables are arranged in parallel or staggered.

[0010] Furthermore, the damage point simulation cable and the pipeline simulation cable are arranged in the same direction.

[0011] Furthermore, it also includes a shorting piece connected to the wiring terminal.

[0012] Furthermore, it also includes a transmitter and a receiver, wherein the positive pole of the output line socket of the transmitter is connected to the pipeline wiring terminal, and the negative pole of the output line socket of the transmitter is connected to the ground.

[0013] Furthermore, it also includes a test pile, which is set on the ground, and the terminal board, pipeline simulation cable and damaged point simulation cable are all located inside the test pile.

[0014] Furthermore, an operation window is provided on the test pile, and the operation window is opposite to the terminal board.

[0015] Beneficial effects of the utility model:

[0016] (1) Compared with the actual pipeline, multiple pipeline simulation cables and damaged points can be buried at different depths in the same trench, and the current signal emitted by the transmitter is stronger than that of the buried short pipeline, which can achieve accurate assessment.

[0017] (2) In addition, multiple cables with different directions and depths are buried in the same trench instead of pipelines, thus avoiding the construction difficulties caused by using pipeline layout assessment stations.

[0018] (3) During the assessment process, the assessor randomly connects any cable, which increases the randomness of the assessment. The assessee cannot use memory to cheat and pass the assessment, thus improving the rigor and scientific nature of the assessment.

[0019] The aforementioned main scheme of the utility model and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and protected by the utility model; and in the utility model, (non-conflicting options) options and other options can also be freely combined. After understanding this scheme, those skilled in the art can understand that there are many combinations based on the existing technology and common knowledge, all of which are technical schemes to be protected by the utility model, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the utility model trench wiring method Figure 1 .

[0022] Figure 3 This is a schematic diagram of the utility model trench wiring method Figure 2 .

[0023] In the figure: 1- wiring board, 2- pipeline terminal, 3- damaged point terminal, 4- pipeline simulation cable, 5- damaged point, 6- damaged point simulation cable, 7- short-circuit piece, 8- transmitter, 9- receiver, 10- test pile. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0025] refer to Figure 1 to Figure 3 As shown, a training and assessment device for the anti-corrosion layer of a buried pipeline includes a wiring board 1, a pipeline wiring terminal 2, a damaged point wiring terminal 3, a pipeline simulation cable 4, a damaged point 5, a damaged point simulation cable 6, a short-circuit piece 7, a transmitter 8, a receiver 9 and a test pile 10.

[0026] refer to Figure 1 As shown, a plurality of pipeline wiring terminals 2 and a plurality of damaged point wiring terminals 3 are provided on the wiring board 1, and the wiring terminals are used to realize the connection of various wires and cables, and realize the power connection operation of each pipeline simulation cable, each damaged point simulation cable and the transmitter.

[0027] The pipeline terminal 2 is connected to one end of the pipeline simulation cable 4, and the other end of the pipeline simulation cable 4 is connected to the ground (grounded by steel brazing, sacrificial anode). The pipeline simulation cable 4 uses a 35 square millimeter welding wire to simulate the buried pipeline. On the one hand, it reduces the earthwork excavation and installation and laying work of the actual pipeline, and on the other hand, multiple cables can be arranged in one trench.

[0028] refer to Figure 2 and Figure 3 As shown, there are several pipeline simulation cables 4, so that one or more pipeline simulation cables 4 can be flexibly selected to assess the person being assessed. The pipeline simulation cables 4 are arranged in parallel or staggered. According to the difficulty of the assessment, multiple cables can be arranged in parallel (similar to parallel arrangement) or staggered (with mutual intersection), and the buried depth of the cables can be controlled, and the difficulty of the assessment can be further adjusted by the different buried depths of the cables.

[0029] A damage point 5 is provided on the pipeline simulation cable 4, and the damage point 5 is connected to one end of the damage point simulation cable 6 (wrapped with electrical tape), and the other end of the damage point simulation cable 6 is connected to the damage point terminal 3. The damage point simulation cable 6 is a 1.5 square millimeter ordinary cable, which is used to realize the grounding operation of the damage point, that is, the damage point 5 simulates the damage of the pipeline anti-corrosion layer by grounding the damage point simulation cable 6, which will not take effect if it is not grounded.

[0030] There are several damage points 5 on the pipeline simulation cable 4, and each damage point 5 is connected to a damage point simulation cable 6, so that the position of the damage point 5 on a pipeline simulation cable 4 can be freely adjusted. The examiner changes the position of the pipeline damage point by connecting different damage point cables to examine the measurement accuracy of different operators. The damage point simulation cable 6 and the pipeline simulation cable 4 are arranged in the same direction, that is, the damage point simulation cable 6 and the pipeline simulation cable 4 are tied into one strand for laying, which is convenient for personnel to judge the layout.

[0031] The pipeline simulation cable 4 and the damaged point simulation cable 6 are both buried underground. Before the training and assessment site is arranged, it is necessary to dig a trench on the ground, then lay the cables in the trench, and then fill the trench with soil to cover it, so as to realize the buried simulation of the pipeline.

[0032] The test pile 10 is a cylindrical structure with a cover, erected on the ground. The terminal block 1, the pipeline simulation cable 4 and the damaged point simulation cable 6 are all located inside the test pile 10. The test pile 10 is used to integrate the terminal block 1 and the connectors of each cable to facilitate the operation of the assessor.

[0033] An operation window is hinged on the test pile 10, and the operation window is opposite to the terminal board 1. When the operation window is opened, the terminal connection operation of each cable can be performed. After completion, the operation window is closed to achieve protection and shielding of the terminal board and each cable and terminal. The short-circuit 7 is used to connect the terminal. The operator of the assessment measures the potential of the anode package and the pipeline by connecting the short-circuit between the terminal.

[0034] Based on a full understanding of the working principle of the buried steel pipeline anti-corrosion layer detector, this device uses 35 square welding handle wires to replace steel pipes for pre-burying, and uses 1.5 square cables and steel chisels to simulate damaged points. The simulated pipeline cables are connected to the cathode protection test pile terminals. This device can not only assess the operator's proficiency in the use of the equipment, but also verify the accuracy of the equipment. Cables are used to simulate steel pipes, and multiple grounded steel chisels are preset to simulate damaged points. The assessor changes the location of the damaged point by replacing the wiring at the cathode protection test pile terminals, so as to achieve the purpose of different damaged point locations for the same pipeline, and can complete the occupational skill level certification and assessment of pipeline detection and anti-corrosion layer evaluation for the core skills of pipeline network operators in the same venue.

[0035] The positive pole of the output line socket of the transmitter 8 is connected to the pipeline terminal 2, and the negative pole of the output line socket of the transmitter 8 is connected to the ground (grounded by a steel bar). The pipeline detector transmitter is powered by a battery pack and connected to a DC socket, and is powered by AC power to an AC socket. The positive pole (white wire) of the output terminal output line socket is connected to the simulated pipeline cable, and the negative pole (green wire) is connected to the grounding electrode (steel bar). The pipeline detector transmitter outputs current (voltage), which is connected to the ground through the damaged point on the pipeline and the sacrificial anode package, and then forms a current loop with the grounding electrode (steel bar). The pipeline detector receiver uses a high-precision magnetic probe to detect and measure the magnetic field generated by the leakage current on the ground to determine the damaged point of the pipeline anti-corrosion layer.

[0036] The above basic examples and further optional examples of the utility model can be freely combined to form multiple embodiments, which are all embodiments that can be adopted and claimed for protection by the utility model. In the scheme of the utility model, each optional example can be arbitrarily combined with any other basic examples and optional examples.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A training and assessment device for the anti-corrosion layer of a buried pipeline, comprising a wiring board (1), characterized in that: The wiring board (1) is provided with a plurality of pipeline wiring terminals (2) and a plurality of damage point wiring terminals (3); the pipeline wiring terminal (2) is connected to one end of a pipeline simulation cable (4); the other end of the pipeline simulation cable (4) is connected to the ground; a damage point (5) is provided on the pipeline simulation cable (4); the damage point (5) is connected to one end of a damage point simulation cable (6); the other end of the damage point simulation cable (6) is connected to the damage point wiring terminal (3); the pipeline simulation cable (4) and the damage point simulation cable (6) are both buried underground.

2. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 is characterized by: The pipeline simulation cables (4) are provided in a plurality of pieces.

3. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 or 2, characterized in that: The pipeline simulation cable (4) is provided with a plurality of damage points (5), and each damage point (5) is connected to a damage point simulation cable (6).

4. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 is characterized by: The pipeline simulation cable (4) is a welding handle cable, and the damaged point simulation cable (6) is an ordinary electrical cable.

5. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 is characterized by: The pipeline simulation cables (4) are arranged in parallel or in an alternating arrangement.

6. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 or 5, characterized in that: The damaged point simulation cable (6) and the pipeline simulation cable (4) are arranged in the same direction.

7. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 is characterized by: It also includes a shorting piece (7) connected to the wiring terminal.

8. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 is characterized by: It also includes a transmitter (8) and a receiver (9), wherein the positive pole of the output line socket of the transmitter (8) is connected to the pipeline wiring terminal (2), and the negative pole of the output line socket of the transmitter (8) is connected to the ground.

9. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 1 is characterized by: It also includes a test pile (10), which is arranged on the ground, and the wiring board (1), the pipeline simulation cable (4) and the damaged point simulation cable (6) are all located inside the test pile (10).

10. The training and assessment device for the anti-corrosion layer of buried pipelines according to claim 9 is characterized in that: The test pile (10) is provided with an operation window, which is located opposite to the wiring board (1).

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