Integrated cathode protection reference tube

Abstract

The utility model discloses an integrated cathode protection reference tube which comprises a PVC (polyvinyl chloride) tube with an anti-ultraviolet function, a mounting seat is mounted in an inner cavity at one end of the PVC tube through a bolt, a polarized probe is arranged in the mounting seat, one end of the polarized probe penetrates through one end of the mounting seat and extends out of the mounting seat, the other end of the polarized probe is electrically connected with one end of a shielding signal line, and the other end of the shielding signal line is electrically connected with the other end of the PVC tube. The other end of the shielding signal line penetrates through the other end of the installation base and extends out of the installation base, one end of the shielding signal line is fixed to the other end of the installation base through a first cable locking head, and the other end of the PVC pipe is in threaded connection with a cap. According to the utility model, the polarization probe is integrated in the PVC pipe and is pre-buried underground through the PVC pipe, so that compared with an existing detection mode, the polarization time of the polarization probe and the time of repeatedly excavating and backfilling a foundation pit during each test are saved, the cathode protection potential detection time of each test pile is greatly shortened, the labor intensity of detection personnel is reduced, and the detection efficiency is improved. And the test-and-play is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection, and more specifically to an integrated cathodic protection reference tube. Background Art

[0002] At present, in order to solve the corrosion problem of metal pipelines buried underground, the forced current cathodic protection method is often used to control the external corrosion of the pipeline. This type of cathodic protection needs to be checked every two months (of course, longer or shorter intervals are also possible) to monitor the cathodic protection level on the pipeline. The pipe-to-ground potential is an important parameter for evaluating the operation of the pipeline cathodic protection system. In the prior art, the cathodic protection status is determined by detecting the potential of the cathodic protection system when it is powered on through a test pile.

[0003] The detection process is to dig a foundation pit on one side of the buried pipeline, the depth of which is the same as the buried depth of the buried pipeline, and then place the test piece connected to the wire in the foundation pit, then backfill the foundation pit with soil, and guide the other end of the wire connected to the test piece to the ground; after the test piece is polarized for 24 hours (of course, longer or shorter time is also possible), connect the test piece to the test pile through the wire, and measure the cathodic protection parameters through a digital multimeter; after the measurement is completed, the foundation pit is dug, the test piece is taken out, and the soil is backfilled to restore the foundation pit. The entire detection process is time-consuming and labor-intensive, with low detection efficiency and high labor intensity for the detection personnel.

[0004] Therefore, it is necessary to propose a new solution to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide an integrated cathodic protection reference tube. By integrating a polarization probe into a PVC pipe and pre-burying it underground through the PVC pipe, compared with the existing detection method, the polarization time of the polarization probe during each test and the time of repeated excavation and backfilling of the foundation pit are saved, so that the cathodic protection potential detection time of each test pile is greatly shortened, the labor intensity of the detection personnel is reduced, and ready-to-use measurement is achieved; at the same time, the PVC pipe is used to ensure the consistency of the detection position of the polarization probe, so as to facilitate data comparison and data trend analysis.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An integrated cathodic protection reference tube comprises a PVC tube with anti-ultraviolet function, the PVC tube is hollow and open at both ends, a mounting seat is installed in the inner cavity of one end of the PVC tube by bolts, a polarization probe is arranged in the mounting seat, one end of the polarization probe passes through one end of the mounting seat and extends to the outside of the mounting seat and is close to a port at one end of the PVC tube, the other end of the polarization probe is electrically connected to one end of a shielded signal line, the other end of the shielded signal line passes through the other end of the mounting seat and extends to the outside of the mounting seat, one end of the shielded signal line is fixed to the other end of the mounting seat by a first cable locking head, and a cap is threadedly connected to the other end of the PVC tube.

[0008] Furthermore, the cap includes a threaded portion and a sealing portion integral with the threaded portion, the threaded portion is threadedly connected to the other end of the PVC pipe, and the end surface of the sealing portion is provided with two symmetrical grooves.

[0009] Furthermore, the tube wall at one end of the PVC tube is evenly distributed with four through holes in the circumferential direction, and the bolts are threadedly connected to the mounting seat after passing through the through holes.

[0010] Furthermore, the other end of the shielded signal line passes through a port at the other end of the PVC tube and extends outside the PVC tube.

[0011] Furthermore, the other end of the shielded signal line passes through the wall of the PVC tube and extends outside the PVC tube, and the shielded signal line is fixed to the PVC tube through a second cable locking head.

[0012] Furthermore, the other end of the shielded signal line is electrically connected to a switch, and is electrically connected to the test pile through the switch.

[0013] Furthermore, the switch is a magnetic switch.

[0014] Furthermore, one end of the mounting seat is provided with a protrusion integral therewith, and one end of the polarization probe exposes the protrusion.

[0015] Furthermore, the diameter of the PVC pipe is not less than 60 mm.

[0016] The beneficial effects of the utility model are:

[0017] 1. In the utility model, by integrating the polarization probe into the PVC pipe and pre-burying it underground through the PVC pipe, compared with the existing detection method, the polarization time of the polarization probe during each test and the time of repeated excavation and backfilling of the foundation pit are saved, so that the cathode potential detection time of each test pile is greatly shortened, the labor intensity of the detection personnel is reduced, and the test is realized immediately after use; at the same time, the PVC pipe is used to ensure the consistency of the detection position of the polarization probe, so as to facilitate data comparison and data trend analysis.

[0018] 2. In the utility model, the PVC pipe is a high-strength, corrosion-resistant non-metallic material. When used in conjunction with a shielded signal line, it can effectively shield stray current interference. At the same time, the PVC pipe has an anti-ultraviolet function, which can delay aging and increase the service life of the PVC pipe.

[0019] 3. In the utility model, two grooves are provided on the end surface of the sealing portion of the cap. Firstly, the cap can be tightened or loosened with the help of a U-shaped handle, which is convenient for twisting; secondly, the height of the sealing portion of the cap can be shortened to reduce the cost; thirdly, it can prevent others from twisting and opening the cap at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an integrated cathodic protection reference tube in this embodiment;

[0021] Figure 2 A schematic diagram of the structure of the cap in this embodiment;

[0022] Figure 3 This is a schematic diagram of a cross-sectional structure of a PVC pipe in this embodiment;

[0023] Figure 4 FIG. 4 is another schematic diagram of the cross-sectional structure of the PVC pipe in this embodiment.

[0024] Figure numerals: PVC tube 1, mounting seat 2, protrusion 201, polarization probe 3, shielded signal line 4, first cable locking head 5, cap 6, threaded portion 601, sealing portion 602, groove 603, through hole 7, second cable locking head 8, switch 9. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment: An integrated cathodic protection reference tube, such as Figure 1-Figure 4As shown, it includes a PVC tube 1 with anti-ultraviolet function, that is, an ultraviolet absorber, such as phenols, benzophenones, benzotriazoles, etc., is added during the preparation process of the PVC tube 1, or an anti-ultraviolet coating is applied on the wall of the PVC tube 1. The PVC tube 1 is a hollow structure with open ends. A mounting seat 2 is installed in the inner cavity of one end of the PVC tube 1 by bolts. A polarization probe 3 is arranged in the mounting seat 2. One end of the polarization probe 3 passes through one end of the mounting seat 2 and extends to the outside of the mounting seat 2 and is close to a port at one end of the PVC tube 1. The other end of the polarization probe 3 is electrically connected to one end of a shielded signal line 4. The other end of the shielded signal line 4 passes through the other end of the mounting seat 2 and extends to the outside of the mounting seat 2. One end of the shielded signal line 4 is fixed to the other end of the mounting seat 2 by a first cable locking head 5. The other end of the PVC tube 1 is threadedly connected with a cap 6.

[0027] Among them, the PVC pipe 1 is a high-strength, corrosion-resistant non-metallic material. When used in conjunction with the shielded signal line 4, it can effectively shield stray current interference. At the same time, the PVC pipe 1 has an anti-ultraviolet function, which can delay aging and increase the service life of the PVC pipe 1. By setting the mounting seat 2, the polarization probe 3 is supported to ensure the consistency of the detection position when the polarization probe 3 contacts the soil, so as to facilitate data comparison and data trend analysis. By setting the first cable locking head 5, on the one hand, the stability of the connection between the polarization probe 3 and the shielded signal line 4 is ensured by fixing the shielded signal line 4, and the accuracy of the test data is ensured; on the other hand, the shielded signal line 4 can be conveniently and effectively fixed. By setting the cap 6, impurities can be prevented from entering the PVC pipe 1, thereby affecting the cathodic protection parameter test.

[0028] Further, such as Figure 2 As shown, the cap 6 includes a threaded portion 601 and a sealing portion 602 integral with the threaded portion 601. The threaded portion 601 is threadedly connected to the other end of the PVC pipe 1, and the end surface of the sealing portion 602 is provided with two symmetrical grooves 603. When in use, the cap 6 is installed on the PVC pipe 1 by threading the other end of the PVC pipe 1 with its threaded portion 601; at the same time, the cap 6 can be tightened or loosened with the help of a U-shaped handle, that is, the two free ends of the U-shaped handle are respectively embedded in the two grooves 603, and the cap 6 is screwed by rotating the U-shaped handle to tighten or loosen the cap 6 on the PVC pipe 1; by providing the grooves 603, firstly, the cap 6 can be tightened or loosened with the help of the U-shaped handle, which is convenient for screwing; secondly, the height of the sealing portion 602 of the cap 6 can be shortened to reduce costs; thirdly, it can prevent others from screwing and opening it at will.

[0029] Preferably, the cap 6 can be made of PVC material with UV resistance, so that it has high strength, corrosion resistance, good weather resistance and UV resistance, thereby increasing its service life.

[0030] Four through holes 7 are evenly distributed in the circumferential direction of the tube wall at one end of the PVC tube 1, that is, the through holes 7 are in a cross-shaped structure, and the bolts pass through the through holes 7 and are threadedly connected to the mounting seat 2. The above design makes the mounting seat 2 and the PVC tube 1 detachable, so that the mounting seat 2 is easy to disassemble and assemble, thereby facilitating the disassembly and replacement of the polarization probe 3; at the same time, the mounting seat 2 is fixed to the PVC tube 1 by multiple bolts, which improves the stability of the mounting seat 2, thereby improving the stability of the polarization probe 3, so as to ensure the stability and accuracy of the polarization probe 3 test.

[0031] The length of the PVC pipe 1 can be selected according to the actual working conditions, and the diameter of the PVC pipe 1 is not less than 60 mm, so that the mounting base 2 can be held and inserted into the PVC pipe 1 for installation; the shape of the mounting base 2 is compatible with the PVC pipe 1, and when the mounting base 2 is installed in the PVC pipe 1, the outer wall of the mounting base 2 is in contact with the inner wall of the PVC pipe 1.

[0032] Preferably, one end of the mounting base 2 is provided with a protrusion 201 integral therewith, and one end of the polarization probe 3 is exposed about 20 mm from the protrusion 201; the above design facilitates holding the mounting base 2 without touching the polarization probe 3.

[0033] Furthermore, the shielded signal line 4 can be guided to the ground through the PVC pipe 1, or can be extended to the ground by itself. Specifically:

[0034] like Figure 3 As shown, the other end of the shielded signal passes through the wall of the PVC pipe 1 and extends outside the PVC pipe 1, and the shielded signal line 4 is fixed to the PVC pipe 1 through the second cable locking head 8; using the above method, on the one hand, the shielded signal line 4 can be routed underground according to actual working conditions; on the other hand, the second cable locking head 8 is used to further improve the stability of the connection between the polarization probe 3 and the shielded signal line 4.

[0035] Or, if Figure 4 As shown, the other end of the shielded signal line 4 passes through the port at the other end of the PVC tube 1 and extends to the outside of the PVC tube 1; with the above method, the PVC tube 1 plays a guiding role on the one hand, and on the other hand, when the shielded signal line 4 is not in use, the shielded signal line 4 can be stored in the PVC tube 1 to protect the shielded signal line 4.

[0036] The other end of the shielded signal line 4 is electrically connected to a switch 9, and is electrically connected to a test post through the switch 9; by setting the switch 9, it is convenient to switch on and off the connection between the polarization probe 3 and the test post, so as to facilitate the use of a digital multimeter for measurement and multiple test calibrations.

[0037] Preferably, the switch 9 can be a magnetic switch, so as to realize quick disconnection, easy operation, and have a certain degree of waterproofness, and be suitable for different weather conditions.

[0038] Before the test, a foundation pit is excavated on one side of the buried pipeline, the depth of which is the same as the buried depth of the buried pipeline, and then a reference tube is placed vertically in the foundation pit, that is, one end of the PVC pipe 1 (the end on which the polarization probe 3 is installed) is downward, and the other end (the end for installing the cap 6) is upward, and the exposed part of the polarization probe 3 is in good contact with the soil; then the soil is backfilled into the foundation pit, and when filling the soil, the reference tube is ensured to remain vertical and unchanged, and the other end of the PVC pipe 1 is exposed about 0.2m above the ground, so as to facilitate later maintenance and testing, and then the soil is filled into the PVC pipe 1 to restore the actual environment; during the test, the other end of the shielded signal line 4 is electrically connected to the test pile through the switch 9, and the cathode potential is detected by the digital multimeter. Since the polarization probe 3 is pre-buried underground, the polarization time before each test and the time for repeated excavation and backfilling of the foundation pit are saved, and the test is realized immediately after use; after the test, the shielded signal line 4 is stored in the PVC pipe 1, and the PVC pipe 1 is sealed by the cap 6 to protect the shielded signal line 4 and prevent impurities from entering the PVC pipe 1.

[0039] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An integrated cathodic protection reference tube, characterized in that: The invention comprises a PVC tube (1) with anti-ultraviolet function, wherein the PVC tube (1) is hollow and open at both ends, a mounting seat (2) is installed in the inner cavity of one end of the PVC tube (1) by means of bolts, a polarization probe (3) is arranged in the mounting seat (2), one end of the polarization probe (3) passes through one end of the mounting seat (2) and extends to the outside of the mounting seat (2) and is close to a port at one end of the PVC tube (1), the other end of the polarization probe (3) is electrically connected to one end of a shielded signal line (4), the other end of the shielded signal line (4) passes through the other end of the mounting seat (2) and extends to the outside of the mounting seat (2), one end of the shielded signal line (4) is fixed to the other end of the mounting seat (2) by means of a first cable locking head (5), and the other end of the PVC tube (1) is threadedly connected to a cap (6).

2. The integrated cathodic protection reference tube according to claim 1, characterized in that: The cap (6) comprises a threaded portion (601) and a sealing portion (602) integral with the threaded portion (601), wherein the threaded portion (601) is threadedly connected to the other end of the PVC pipe (1), and the end surface of the sealing portion (602) is provided with two symmetrical grooves (603).

3. The integrated cathodic protection reference tube according to claim 1, characterized in that: The tube wall at one end of the PVC tube (1) is evenly distributed with four through holes (7) in the circumferential direction, and the bolts pass through the through holes (7) and are threadedly connected to the mounting seat (2).

4. The integrated cathodic protection reference tube according to claim 1, characterized in that: The other end of the shielded signal line (4) passes through a port at the other end of the PVC tube (1) and extends outside the PVC tube (1).

5. The integrated cathodic protection reference tube according to claim 1, characterized in that: The other end of the shielded signal line (4) passes through the wall of the PVC tube (1) and extends to the outside of the PVC tube (1), and the shielded signal line (4) is fixed to the PVC tube (1) via a second cable locking head (8).

6. The integrated cathodic protection reference tube according to claim 1, characterized in that: The other end of the shielded signal line (4) is electrically connected to a switch (9), and is electrically connected to a test pile via the switch (9).

7. The integrated cathodic protection reference tube according to claim 6, characterized in that: The switch (9) is a magnetic switch.

8. The integrated cathodic protection reference tube according to claim 1, characterized in that: One end of the mounting seat (2) is provided with a protrusion (201) integral therewith, and one end of the polarization probe (3) exposes the protrusion (201).

9. The integrated cathodic protection reference tube according to claim 1, characterized in that: The diameter of the PVC pipe (1) is not less than 60 mm.

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