CN211471557U - Multi-azimuth surrounding type polarization probe - Google Patents
Multi-azimuth surrounding type polarization probe Download PDFInfo
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- CN211471557U CN211471557U CN201922346983.5U CN201922346983U CN211471557U CN 211471557 U CN211471557 U CN 211471557U CN 201922346983 U CN201922346983 U CN 201922346983U CN 211471557 U CN211471557 U CN 211471557U
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Abstract
A multi-azimuth surrounding type polarization probe comprises an outer shell, wherein an annular cavity is formed in the outer shell, and three lead guide holes are circumferentially and uniformly formed in the middle of one side surface of the outer shell; a concrete simulation gel ring, a humectant gel ring and CuSO are sequentially arranged in the annular cavity from the inner end to the outer end4A crystal ring; concrete simulation gel ring, humectant gel ring and CuSO4Two phases of the crystal ring are arranged in a joint manner; the three polarization test pieces are uniformly arranged in the middle of the inner annular surface of the concrete simulation gel body and are communicated with the humectant gel ring through three salt bridges arranged in the concrete simulation gel ring; the three self-corrosion test pieces are uniformly arranged in the middle of the inner annular surface of the concrete simulation gel; the thin copper ring is concentrically arranged on CuSO4The interior of the crystal ring. The probe can realize multi-azimuth measurement on the basis of keeping the function of reducing IR drop of the traditional polarization probe, and can realize high-precision measurement of the same vertical plane as far as possible between a measurement point and a damaged point.
Description
Technical Field
The utility model belongs to the technical field of the electrochemical corrosion, specifically a diversified surrounding type polarizes probe.
Background
At present, urban rail transit generally adopts direct-current bilateral power supply, a rail is used as a return passage, but complete insulation can not be realized due to various factors because the rail and subway auxiliary equipment are installed in an insulation mode, and the insulation performance of the rail and subway auxiliary equipment is gradually reduced along with the lapse of time, so that generated stray current can affect the normal operation of electrical equipment and facilities in the subway to different degrees, and meanwhile, the damage to tunnels, roadbed reinforcing steel bars, various buried metal pipelines and the like to different degrees can be caused.
Subway stray current is regarded as the great hidden danger of harm buried metal, has become for a long time not neglected great problem, and methods such as monitoring and protection to stray current also become the focus of people's attention gradually. The existing stray current detection method for the buried metal pipeline comprises the following steps: direct measurement methods (such as a surface reference method, a near reference method, a far reference method and the like), indirect measurement methods (such as a soil voltage gradient method, an auxiliary electrode method, an instant power failure method and the like), and unconventional measurement methods (such as a close-spaced potential measurement method, a polarized probe method and the like). However, because of the problems of IR drop in actual measurement, the polarization probe isolates the test piece from stray current through the insulating device to eliminate IR drop, and is increasingly a preferred method.
The polarization test probe is a long-acting, high-stability and IR drop-eliminating potential measuring probe for buried metals and pipelines, and in a pipeline or sacrificial anode cathode protection system which is interfered by stray current or cannot synchronously interrupt protection current, the polarization probe method is adopted to detect and monitor the polarization potential of corrosion of the buried metals, the pipelines and the like, and the result is more accurate and reliable.
Although the polarized probe method can effectively reduce the problem of IR drop in the measurement process, the detection position of the polarized probe and the damage point may not be in the same vertical plane due to the uncertain position of the damaged buried metal pipeline, thereby causing measurement errors along with the increase of the detection distance.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a diversified surrounding type polarization probe, this probe can realize diversified measurement on keeping the basis that traditional polarization probe reduced the IR and fall the function, can realize the high accuracy measurement of measuring point and damaged point as far as same perpendicular.
In order to achieve the above object, the present invention provides a multi-azimuth encircling type polarization probe, which comprises an outer shell, three polarization test pieces, three self-corrosion test pieces and a circular copper thin ring;
the inner part of the outer shell is provided with an annular cavity, and the middle part of one side surface of the outer shell is annularly and uniformly provided with three lead-out holes;
a concrete simulation gel ring, a humectant gel ring and CuSO are sequentially arranged in the annular cavity from the inner end to the outer end4A crystal ring; concrete simulation gel ring, humectant gel ring and CuSO4Two phases of the crystal ring are arranged in a joint manner;
the three polarization test pieces are uniformly arranged in the middle of the inner annular surface of the concrete simulated gel ring, and the outer surfaces of the three polarization test pieces are respectively communicated with the humectant gel ring through three salt bridges radially arranged in the concrete simulated gel ring; the end parts of the three polarization test pieces are respectively communicated with a first outlet hole of the three lead guide holes through three wire passing channels A arranged at the edge of the concrete simulation gel ring; the three self-corrosion test pieces are uniformly arranged in the middle of the inner annular surface of the concrete simulated gel ring, the three self-corrosion test pieces and the three polarization test pieces are arranged in a mutually staggered mode, and the included angle between the adjacent self-corrosion test pieces and the adjacent polarization test pieces is 60 degrees; the end parts of the three self-corrosion test pieces are respectively communicated with a second outlet hole of the three lead guide holes through three wire passing channels B arranged at the edge of the concrete simulated gel ring;
the thin copper ring is concentrically arranged on the CuSO4Inside the crystal ring, the copper thin ring penetrates through CuSO4The wire passing channel C of the crystal ring and the humectant gel ring is communicated with a third outlet of the three wire leading-out holes;
one end of each of the three first leads is connected with one end of each of the three polarization test pieces, and the other end of each of the three first leads passes through a first outlet of the three lead-out holes after passing through the wire passing channel A;
one end of each of the three second leads is respectively connected with one end of each of the three self-corrosion test pieces, and the other end of each of the three second leads passes through a second outlet of the three lead-out holes after passing through the wire passing channel B;
one end of the third lead is connected with one end of the copper thin ring, and the other end of the third lead penetrates out of a third outlet hole in the three lead guide holes after passing through the wire passing channel C.
The shell body is composed of a cylindrical part in the middle and end plates connected to two opening ends of the cylindrical part in a threaded fit mode.
The first lead is welded with the polarization test piece, and the welding point is sealed by epoxy resin; the second lead is welded with the self-corrosion test piece, and the welding point is sealed by epoxy resin; the third wire is welded with the copper thin ring, and the welding point is sealed by epoxy resin.
The concrete simulation gel ring is made of concrete simulation liquid.
The utility model discloses polarization test block with three equant degree distributions and the test block group of constituteing from corrosion test block can realize 360 detections of three position equipartition, can acquire the most accurate detected value between monitoring point and damaged point as far as. When data is acquired, a multi-direction independent measurement mode can be adopted to acquire the most accurate measurement value; during data processing, accidental errors can be eliminated by carrying out uniform value division on multi-azimuth measurement values, and errors can be effectively reduced. By embedding a thin ring of copper in CuSO4The transmission characteristic of uniform substances can be realized by utilizing the equidistant transmission characteristic between the circular ring and the object to be measured in the crystal; meanwhile, the copper thin ring increases the contact surface of chemical reaction, and further improves the measurement precision essentially. Using solid CuSO4The crystal replaces the saturated CuSO in the traditional reference electrode4The solution avoids a series of problems caused by leakage of the reference solution in the reference electrode; meanwhile, the supply amount of ions required by the electrochemical reaction is also ensured. The utility model discloses simple structure can realize diversified, the high accuracy detection and the monitoring of polarization potential, and more traditional polarization probe has the advantage from the aspect of environmental protection and measurement accuracy stability。
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is a perspective view of the present invention;
fig. 4 is a measurement schematic diagram of the present invention.
In the figure: 1. polarized test piece, 2, self-corrosion test piece, 3, concrete simulation gel ring, 4, humectant gel ring, 5, copper thin ring, 6, CuSO4Crystal ring, 70, outer sealed shell, 8, salt bridge, 9, wire outlet hole, 10, wire channel A.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 3, a multi-directional encircling polarization probe comprises an outer shell 7, three polarization test pieces 1, three self-corrosion test pieces 2 and a circular copper thin ring 5;
an annular cavity is formed in the outer shell 7, and three lead wire outlet holes 9 are circumferentially and uniformly formed in the middle of one side face of the outer shell 7;
a concrete simulation gel ring 3, a humectant gel ring 4 and CuSO are sequentially arranged in the annular cavity from the inner end to the outer end4 A crystal ring 6; concrete simulation gel ring 3, humectant gel ring 4 and CuSO4The crystal rings 6 are arranged in a manner of being attached to each other two by two;
the three polarization test pieces 1 are uniformly arranged in the middle of the inner annular surface of the concrete simulated gel ring 3, and the outer surfaces of the three polarization test pieces 1 are respectively communicated with the humectant gel ring 4 through three salt bridges 8 radially arranged in the concrete simulated gel ring 3; the end parts of the three polarization test pieces 1 are respectively communicated with a first outlet hole of the three lead guide outlets 9 through three wire passing channels A10 arranged at the edge of the concrete simulation gel ring 3; the three self-corrosion test pieces 2 are uniformly arranged in the middle of the inner annular surface of the concrete simulated gel ring 3, the three self-corrosion test pieces 2 and the three polarization test pieces 1 are arranged in a mutually staggered mode, and the included angle between the adjacent self-corrosion test pieces 2 and the adjacent polarization test pieces 1 is 60 degrees; the end parts of the three self-corrosion test pieces 2 are respectively communicated with a second outlet hole of the three lead-out holes 9 through three wire passing channels B arranged at the edge of the concrete simulation gel ring 3;
the thin copper ring 5 is concentrically arranged on the CuSO4Inside the crystal ring 6, a thin copper ring 5 is formed by sequentially penetrating CuSO4The wire passing channel C of the crystal ring 6 and the humectant gel ring 4 is communicated with a third outlet of one wire leading-out hole 9;
one end of each of the three first wires is connected to one end of each of the three polarization test pieces 1, and the other end of each of the three first wires passes through a first one of the three wire outlet holes 9 after passing through the wire passage a 10;
one end of each of the three second wires is connected with one end of each of the three self-corrosion test pieces 2, and the other end of each of the three second wires penetrates out of a second hole of the three wire leading-out holes 9 after passing through the wire passing channel B;
one end of the third lead is connected with one end of the copper thin ring 5, and the other end of the third lead passes through a third hole of the three lead guide holes 9 after passing through the wire passing channel C.
The outer shell 7 is composed of a cylindrical part in the middle and end plates connected to two open ends of the cylindrical part in a threaded fit manner.
The first lead is welded with the polarization test piece 1, and the welding point is sealed by epoxy resin; the second lead is welded with the self-corrosion test piece 2, and the welding point is sealed by epoxy resin; the third wire is soldered to the copper thin ring 5 and the solder joint is sealed by epoxy.
The concrete simulation gel ring 3 is made of concrete simulation liquid.
The utility model discloses polarization test block with three equant degree distributions and the test block group of constituteing from corrosion test block can realize 360 detections of three position equipartition, can acquire the most accurate detected value between monitoring point and damaged point as far as. When data is acquired, a multi-direction independent measurement mode can be adopted to acquire the most accurate measurement value; during data processing, accidental errors can be eliminated by carrying out uniform value division on multi-azimuth measurement values, and errors can be effectively reduced. By embedding a thin ring of copper in CuSO4Inside the crystal, can use the ring to the pair to be measuredThe transmission characteristics of uniform substances are realized due to the equal-interval transmission characteristics among the images; meanwhile, the copper thin ring increases the contact surface of chemical reaction, and further improves the measurement precision essentially. Using solid CuSO4The crystal replaces the saturated CuSO in the traditional reference electrode4The solution avoids a series of problems caused by leakage of the reference solution in the reference electrode; meanwhile, the supply amount of ions required by a chemical method is also ensured. The utility model discloses simple structure can realize that diversified, the high accuracy of polarization potential detects and monitors, and more traditional polarization probe is more advantageous from the aspect of environmental protection and measurement accuracy stability.
In use, as shown in fig. 4, before the measurement starts, it is determined that three polarization test pieces 1 (respectively denoted as polarization test piece 01, polarization test piece 02, and polarization test piece 03) and three self-corrosion test pieces 2 (respectively denoted as self-corrosion test piece 01, self-corrosion test piece 02, and self-corrosion test piece 03) of the polarization probe are already communicated with the object to be measured, and the object to be measured, the three polarization test pieces 1, and the three self-corrosion test pieces 2 are in a fully polarized state. The anode of a direct current digital voltmeter V is connected with the metal to be detected through a switch S00, the cathode is respectively connected with one end of a switch S10, one end of S20 and one end of S30, the other end of the switch S10 is respectively connected with the polarization test piece 01 and the self-corrosion test piece 01 through switches S11 and S12, the other end of the switch S20 is respectively connected with the polarization test piece 02 and the self-corrosion test piece 02 through switches S21 and S22, and the other end of the switch S30 is respectively connected with the polarization test piece 03 and the self-corrosion test piece 03 through switches S31 and S32. In data acquisition, after closing S00 and S10, closing S11 acquires the polarization potential at azimuth one; closing S12 to obtain the self-corrosion potential at the first position; after closing S00 and S20, closing S21 to obtain polarization potential at the second position, and closing S22 to obtain self-corrosion potential at the second position; after closing S00, S30, closing S31 acquires azimuthal three polarization potentials, and closing S32 acquires azimuthal three self-corrosion potentials. Thus taking multiple independent measurements to obtain the most accurate measurement. And in the data processing, a multi-azimuth measurement value is subjected to averaging scheme to eliminate accidental errors and reduce errors.
Claims (4)
1. A multi-azimuth surrounding type polarization probe comprises an outer shell (7), and is characterized by further comprising three polarization test pieces (1), three self-corrosion test pieces (2) and a circular copper thin ring (5);
an annular cavity is formed in the outer shell (7), and three lead guide holes (9) are circumferentially and uniformly formed in the middle of one side face of the outer shell (7);
a concrete simulation gel ring (3), a humectant gel ring (4) and CuSO are sequentially arranged from the inner end to the outer end in the annular cavity4A crystal ring (6); a concrete simulation gel ring (3), a humectant gel ring (4) and CuSO4The crystal rings (6) are arranged in a pairwise attaching manner;
the three polarization test pieces (1) are uniformly arranged in the middle of the inner annular surface of the concrete simulated gel ring (3), and the outer surfaces of the three polarization test pieces (1) are respectively communicated with the humectant gel ring (4) through three salt bridges (8) which are radially arranged in the concrete simulated gel ring (3); the end parts of the three polarization test pieces (1) are respectively communicated with a first outlet hole in the three lead guide-out holes (9) through three wire passing channels A (10) arranged at the edge of the concrete simulation gel ring (3); the three self-corrosion test pieces (2) are uniformly arranged in the middle of the inner annular surface of the concrete simulated gel ring (3), the three self-corrosion test pieces (2) and the three polarization test pieces (1) are arranged in a mutually staggered mode, and the included angle between the adjacent self-corrosion test pieces (2) and the adjacent polarization test pieces (1) is 60 degrees; the end parts of the three self-corrosion test pieces (2) are respectively communicated with a second outlet hole of the three lead guide holes (9) through three wire passing channels B arranged at the edge of the concrete simulation gel ring (3);
the thin copper ring (5) is concentrically arranged on the CuSO4Inside the crystal ring (6), the copper thin ring (5) penetrates through CuSO in sequence4The wire passing channel C of the crystal ring (6) and the humectant gel ring (4) is communicated with a third outlet of the three lead guide outlets (9);
one end of each of the three first leads is respectively connected with one end of each of the three polarization test pieces (1), and the other end of each of the three first leads passes through a first outlet hole of the three lead outlet holes (9) after passing through the wire passing channel A (10);
one end of each of the three second leads is respectively connected with one end of each of the three self-corrosion test pieces (2), and the other end of each of the three second leads passes through a second outlet of the three lead outlet holes (9) after passing through the wire passing channel B;
one end of the third lead is connected with one end of the copper thin ring (5), and the other end of the third lead passes through a third outlet hole of the three lead outlet holes (9) after passing through the wire passing channel C.
2. A multi-azimuth circumambient polarisation probe according to claim 1, wherein the outer housing (7) comprises a central cylindrical portion and end plates threadedly engaged at opposite open ends of the cylindrical portion.
3. The multi-azimuth encircling polarized probe according to claim 2, wherein the first conducting wire is welded with the polarized test strip (1), and the welding point is sealed by epoxy resin; the second lead is welded with the self-corrosion test piece (2), and the welding point is sealed by epoxy resin; the third lead is welded with the copper thin ring (5), and the welding point is sealed by epoxy resin.
4. A multi-azimuth encircling polarization probe according to claim 3, wherein said concrete analog gel ring (3) is made of concrete analog liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922346983.5U CN211471557U (en) | 2019-12-24 | 2019-12-24 | Multi-azimuth surrounding type polarization probe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922346983.5U CN211471557U (en) | 2019-12-24 | 2019-12-24 | Multi-azimuth surrounding type polarization probe |
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| Publication Number | Publication Date |
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| CN211471557U true CN211471557U (en) | 2020-09-11 |
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| CN201922346983.5U Active CN211471557U (en) | 2019-12-24 | 2019-12-24 | Multi-azimuth surrounding type polarization probe |
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