CN220132354U - Integrated test piece free from electric field interference - Google Patents
Integrated test piece free from electric field interference Download PDFInfo
- Publication number
- CN220132354U CN220132354U CN202321360867.9U CN202321360867U CN220132354U CN 220132354 U CN220132354 U CN 220132354U CN 202321360867 U CN202321360867 U CN 202321360867U CN 220132354 U CN220132354 U CN 220132354U
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- CN
- China
- Prior art keywords
- test piece
- electric field
- self
- corrosion
- alternating current
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Links
- 230000005684 electric field Effects 0.000 title claims abstract description 28
- 238000005260 corrosion Methods 0.000 claims abstract description 29
- 230000010287 polarization Effects 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000005530 etching Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses an integrated test piece free from electric field interference, and relates to an integrated test piece used in a buried pipeline. The purpose is to provide an integrated test piece free from electric field interference, which solves the problem that the self-corrosion test piece is interfered by the electric field of the polarized test piece or the alternating current test piece to cause measurement deviation. The integrated test piece for preventing the electric field interference comprises a first insulating shell, wherein an alternating current test piece, a polarized test piece and a self-corrosion test piece are arranged in the first insulating shell, the polarized test piece and the alternating current test piece form an annular structure in a surrounding mode, a second insulating shell is arranged at the joint of the polarized test piece and the alternating current test piece for insulation, a plurality of self-corrosion test pieces are arranged in the annular structure, the self-corrosion test pieces are separated from the alternating current test piece and the polarized test piece through the first insulating shell, and one ends of the alternating current test piece, the polarized test piece and the self-corrosion test piece are respectively connected with a wire.
Description
Technical Field
The utility model relates to the technical field of cathode protection, in particular to an integrated test piece free from electric field interference.
Background
To mitigate the risk of corrosion, coating plus cathodic protection techniques are often employed to protect buried pipes. The self-corrosion test piece is buried underground, and can simulate the natural corrosion condition of a pipeline leakage point under the unprotected condition, so that the natural potential of the self-corrosion test piece has very important reference significance in cathode protection judgment.
At present, the self-corrosion test piece, the polarization test piece and the alternating current test piece are installed near the long-acting reference together, and because the polarization test piece and the alternating current test piece are connected with the pipeline, current flows in/out of the pipeline and generates an electric field to influence the potential measurement of the self-corrosion test piece and the long-acting reference, thereby influencing the judgment of the effectiveness of the index on the cathode protection of the buried pipeline.
Disclosure of Invention
The utility model provides an integrated test piece free from electric field interference, which solves the problem that a self-corrosion test piece is interfered by an electric field of a polarized test piece or an alternating current test piece to cause measurement deviation.
The utility model relates to an integrated test piece free from electric field interference, which comprises a first insulating shell, wherein an alternating current test piece, a polarized test piece and a self-corrosion test piece are arranged in the first insulating shell, the polarized test piece and the alternating current test piece form an annular structure, a second insulating shell is arranged at the joint of the polarized test piece and the alternating current test piece for insulation, a plurality of self-corrosion test pieces are arranged in the annular structure and are separated from the alternating current test piece and the polarized test piece through the first insulating shell, one ends of the alternating current test piece, the polarized test piece and the self-corrosion test piece are respectively connected with a wire, and a plurality of wires are converged into a cable to extend out from one end of the first insulating shell.
The self-etching test piece is cylindrical or has other shape with equal area.
The integrated test piece is free from electric field interference, wherein the polarized test piece and the alternating current test piece are arc-shaped with the same radian.
The integrated test piece is protected from electric field interference, wherein the wires are converged into a cable which extends out of one end of the first insulating shell.
The integrated test piece is free from electric field interference, wherein a bolt is arranged at the joint of the cable and the first insulating shell.
The integrated test piece free from electric field interference is different from the prior art in that the integrated test piece free from electric field interference separates the AC test piece, the polarized test piece and the self-corrosion test piece by arranging the first insulating shell and the second insulating shell, so that the measurement of the self-corrosion test piece is free from the electric field interference of the polarized test piece or the AC test piece, and the measurement result is more accurate. The integrated test piece which is free from the interference of the electric field is more suitable for being used in the environment of the interference of the stray current.
The integrated test strip protected from electric field according to the present utility model will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a bottom view of an integrated test strip protected from electric field according to the present utility model;
FIG. 2 is a front view of an integrated test strip protected from electric field according to the present utility model;
FIG. 3 is a cross-sectional view of an integrated test strip protected from electric field according to the present utility model;
the labels in the figures are: 1-an alternating current test piece; 2-polarizing test pieces; 3-self-etching test piece; 5-a second insulating housing; 6-a first insulating housing; 7-a cable; 8-bolts.
Detailed Description
The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1-3, the integrated test strip of the present utility model protected from electric field comprises a first insulating housing 6, the first insulating housing 6 separating the external environment from the internal test strip and wires.
The first insulating housing 6 is internally provided with an AC test piece 1, a polarized test piece 2 and a self-etching test piece 3. The polarized test piece 2 and the alternating current test piece 1 are arc-shaped with the same radian, and the two test pieces form an annular structure inside the first insulating shell 6. The two ends of the AC test piece 1 are provided with a second insulating shell 5, and the second insulating shell 5 separates the opposite positions of the interface of the AC test piece 1 and the polarized test piece 2. The ac test strip 1 and the polarization test strip 2 are separated from each other by a first insulating housing 6.
A plurality of self-corrosion test pieces 3 are arranged in the annular structure formed by the alternating current test piece 1 and the polarized test piece 2. In this embodiment, the number of self-etching test pieces 3 is 1, and the self-etching test pieces 3 are cylindrical in shape and separated from the ac test pieces 1 and the polarization test pieces 2 by a first insulating case 6.
The alternating current test piece 1, the polarization test piece 2 and one end of the self-corrosion test piece 3 are respectively connected with wires, and a plurality of wires are converged into a cable 7 to extend out from one end of the first insulating shell 6 so as to be further connected with detection equipment. The junction of cable 7 and first insulating housing 6 is provided with bolt 8, increases joint strength, convenient to detach.
The first insulating housing 6 and the second insulating housing 5 serve to separate the test pieces from each other, and the insulating materials of the two may be the same or different.
In this example, the material of each test piece was pipeline steel. The area of each test piece can be 1cm 2 ，6.5cm 2 ，10cm 2 Other custom sizes are also possible.
The ac test strip 1, the polarization test strip 2 and the self-etching test strip 3 may protrude out of the plane of the first insulating housing 6 or may be flush with the surface of the first insulating housing 6 as shown in fig. 3.
When the integrated test piece free from electric field interference is used, after the detection equipment is connected with the lead corresponding to the long-acting reference arranged outside to obtain the reference parameter, the alternating current test piece 1, the polarized test piece 2 and the lead corresponding to the self-corrosion test piece 3 are respectively connected, the potential parameter corresponding to each test piece is detected, and finally the condition of pipeline corrosion is obtained through calculation, wherein the calculation process is the prior art and is not repeated here.
The integrated test piece which is free from the electric field interference separates the alternating current test piece, the polarized test piece and the self-corrosion test piece by arranging the first insulating shell and the second insulating shell, so that the measurement of the self-corrosion test piece is free from the electric field interference of the polarized test piece or the alternating current test piece, and the measurement result is more accurate. The integrated test piece which is free from the interference of the electric field is more suitable for being used in the environment of the interference of the stray current. The polarized test piece and the alternating current test piece are arc-shaped to form an annular structure; the self-corrosion test piece is cylindrical and is positioned inside the annular structure. The internal structure of the device is compact, and the measured potential data is ensured to be more accurate.
While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (5)
1. An integrated test strip protected from electric field interference, characterized in that: including first insulating case, first insulating case inside is provided with interchange test block, polarization test block and from the corrosion test block, and polarization test block and interchange test block enclose into annular structure, and the junction of polarization test block and interchange test block is provided with second insulating case and insulates, and annular structure inside is provided with a plurality of from the corrosion test block, separates from corrosion test block and interchange test block and polarization test block through first insulating case, and interchange test block, polarization test block and from the one end of corrosion test block are connected with the wire respectively.
2. The integrated test strip of claim 1, wherein: the self-corrosion test piece is cylindrical.
3. The integrated test strip of claim 1, wherein: the polarized test piece and the alternating current test piece are arc-shaped with the same radian.
4. The integrated test strip of claim 1, wherein: the conductors converge into a cable extending from one end of the first insulating housing.
5. The integrated test strip of claim 4, wherein: the junction of cable and first insulating housing is provided with the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321360867.9U CN220132354U (en) | 2023-05-31 | 2023-05-31 | Integrated test piece free from electric field interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321360867.9U CN220132354U (en) | 2023-05-31 | 2023-05-31 | Integrated test piece free from electric field interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220132354U true CN220132354U (en) | 2023-12-05 |
Family
ID=88950971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321360867.9U Active CN220132354U (en) | 2023-05-31 | 2023-05-31 | Integrated test piece free from electric field interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220132354U (en) |
-
2023
- 2023-05-31 CN CN202321360867.9U patent/CN220132354U/en active Active
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