CN219772263U - Cathode protection system for buried metal structures - Google Patents
Cathode protection system for buried metal structures Download PDFInfo
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- CN219772263U CN219772263U CN202321383669.4U CN202321383669U CN219772263U CN 219772263 U CN219772263 U CN 219772263U CN 202321383669 U CN202321383669 U CN 202321383669U CN 219772263 U CN219772263 U CN 219772263U
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 49
- 239000002184 metal Substances 0.000 title claims abstract description 49
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 238000004210 cathodic protection Methods 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000000523 sample Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
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- 230000010287 polarization Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000002848 electrochemical method Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- 239000002737 fuel gas Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
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- 239000003921 oil Substances 0.000 description 1
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- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
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- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Abstract
The utility model provides a cathodic protection system of a buried metal structure, comprising: the device comprises a potentiostat 1, an explosion-proof wiring device 2, a test pile 3, a reference electrode 4 for control, a potential measuring device 5 and an auxiliary anode 6 with a breaking function; the potentiostat 1 is respectively connected with a control reference electrode 4, a disconnection-measuring function auxiliary anode 6 and a protected metal structure 7 through an explosion-proof wiring device 2; the test pile 3 is arranged above the metal structure 7 and is respectively connected with the potential measuring device 5 and the metal structure 7 which are arranged underground; the auxiliary anode 6 with the breaking detection function is arranged underground and laid in the same ditch as the metal structure 7, and the breaking detection cable and the anode cable of the auxiliary anode 6 with the breaking detection function are connected into the explosion-proof wiring device 2. The utility model can rapidly check the breakpoint of the anode land bed, is rapid and convenient to repair, and reduces the maintenance cost of the cathode protection system.
Description
Technical Field
The utility model relates to the technical field of buried metal structure protection, in particular to a cathode protection system of a buried metal structure.
Background
The buried pipelines of long oil and gas pipelines and stations and the buried pipelines of urban fuel gas are deeply buried, so that the pipelines are generally protected by adopting the measures of combining the corrosion-resistant coating and the cathodic protection which have been practically proved in order to prevent the damages such as safety and environmental pollution caused by corrosion. The anticorrosive coating is used for physically isolating the outer wall of the steel pipeline from the soil in the external environment so as to achieve the purpose of protecting the outer wall of the pipeline. The cathode protection adopts an electrochemical method to lead the buried pipeline to generate cathode polarization, and the potential of the protected pipeline is kept within a specified range, thereby eliminating corrosion. The cathodic protection method comprises a sacrificial anode and an impressed current, and a combined protection mode of the sacrificial anode and the impressed current can be adopted in certain cases.
The cathode protection method of the sacrificial anode is only suitable for the conditions of low environmental resistivity and less than 1A of required total protection current, and meanwhile, the sacrificial anode protection has the defects of limited driving voltage, short protection distance, difficult adjustment of output current, periodic replacement and the like, so that the design of the external current cathode protection or the combined protection method of the external current and the sacrificial anode is mostly adopted for large-scale engineering.
The arrangement mode of the anode in the external current method is the key of the success of the design of the cathode protection system in the prior art, when an auxiliary anode land bed is selected, the existing auxiliary anode land bed is provided with a deep well anode land bed, a shallow anode land bed and a linear anode land bed according to engineering characteristics, the auxiliary anode is also various according to the different anode land bed forms, a high silicon cast iron anode, a pre-packaged high silicon cast iron anode, a titanium-based metal mixture anode, a platinum composite anode, a linear anode and the like.
In the impressed current cathodic protection system, the breakpoint investigation of the cathodic cable and the anodic cable is already a relatively mature technology, and a cable fault detector, an audio detector and other breaking detection methods can be adopted, and the structure in the auxiliary anode ground bed is more complex than that of the cable, and an auxiliary anode self-powered cable and a connection point thereof are arranged, so that once the anode ground bed has a breakpoint, the breakpoint investigation and repair are difficult to carry out. The deep well anode bed is characterized in that an auxiliary anode is vertically buried in a deep well which is more than or equal to 15 meters underground, is a far anode bed, is easy to interfere with other buried metal structures, has the phenomena of over protection and insufficient protection, and is disconnected at the joint of the auxiliary anode and a cable in the deep well anode bed and due to corrosion, tensile force, end effect, unreasonable design and the like of the anode cable, the breakpoint is difficult to check due to large burying depth, and is difficult and uneconomical to repair, so that the anode is not yet used for the service life, the anode bed is invalid, and even the whole cathode protection system is abandoned. The shallow buried anode ground bed has the same depth as the buried pipeline of the auxiliary anode, is far away from the anode ground bed, has high anode consumption, is easy to interfere with other buried metal structures, has the phenomena of over protection and insufficient protection, is difficult to check after the connection part of the anode cable and the auxiliary anode is disconnected, and is more difficult to repair on site for a station field with complicated underground metal structure and limited ground space. The linear anode ground bed is a near-anode ground bed, the anode is convenient to construct, is laid along a ditch with a pipeline, is more than or equal to 300mm away from the pipeline, overcomes the problems of being affected by geology, large interference to other structures, low current utilization rate and the like of the far-anode ground bed, is widely applied to regional cathode protection systems, but is easy to break due to unreasonable laying, foundation sinking, third party mechanical damage, unreliability and other reasons, once the break occurs, the buried linear anode is required to be fully excavated for finding the break or the break position is determined by checking along the whole linear anode by virtue of detection equipment, and the system is time-consuming, labor-consuming and high in maintenance cost.
Disclosure of Invention
In order to solve the problems, the utility model provides a cathode protection system of a buried metal structure, which can effectively solve the problems of anode bed failure, low current utilization rate, large interference to other buried metal structures and high maintenance cost caused by difficult repair after the anode bed is broken by an auxiliary anode and an anode cable.
The utility model provides a cathode protection system of a buried metal structure, comprising: the device comprises a potentiostat 1, an explosion-proof wiring device 2, a test pile 3, a reference electrode 4 for control, a potential measuring device 5 and an auxiliary anode 6 with a breaking function;
the potentiostat 1 is respectively connected with a control reference electrode 4, a disconnection-measuring function auxiliary anode 6 and a protected metal structure 7 through an explosion-proof wiring device 2;
the test pile 3 is arranged above the metal structure 7 and is respectively connected with the potential measuring device 5 and the metal structure 7 which are arranged underground;
the auxiliary anode 6 with the breaking detection function is arranged underground and laid in the same ditch as the metal structure 7, and the breaking detection cable and the anode cable of the auxiliary anode 6 with the breaking detection function are connected into the explosion-proof wiring device 2.
The utility model can rapidly check the breakpoint of the anode land bed, is rapid and convenient to repair, can not fail in the service life of the auxiliary anode, has uniform protection potential distribution and high current utilization rate, has small interference to other buried metal structures, and reduces the maintenance cost of the cathode protection system.
In one embodiment, the potentiostat 1 and the explosion-proof wiring device 2 are arranged in a plurality, and the number of potentiostats 1 and the number of explosion-proof wiring devices 2 are the same.
In one embodiment, the positive electrode of the potentiostat 1 is connected with the auxiliary anode 6 of the breaking function through the explosion-proof wiring device 2, and the negative electrode of the potentiostat 1 is connected with the metal structure 7 through the explosion-proof wiring device 2.
In one embodiment, the explosion proof wiring device 2 is an outdoor explosion proof wiring box or a buried explosion proof wiring box.
In one embodiment, the test stake 3 and the potential measuring device 5 are provided in plural numbers, and the number of the test stake 3 and the potential measuring device 5 is the same.
In one embodiment, the test stake 3 is an intelligent test stake.
In one embodiment, the potentiometric device 5 is a reference electrode or a polarized probe.
In one embodiment, the control reference electrode 4 and the potential measuring device 5 are made of copper or high-purity zinc.
In an embodiment, further comprising: an instrument with a breaking detection function is connected with the explosion-proof wiring device 2.
In one embodiment, the instrument with the function of detecting disconnection is a cable fault tester.
These and other aspects of the utility model will be apparent from and elucidated with reference to the embodiment(s) described hereinafter.
Drawings
The various features of the utility model and the connections between the various features are further described below with reference to the figures. The figures are exemplary, some features are not shown in actual scale, and some features that are conventional in the art to which the utility model pertains and are not essential to the utility model may be omitted from some figures, or additional features that are not essential to the utility model may be shown, and the combination of features shown in the figures is not meant to limit the utility model. In addition, throughout the specification, the same reference numerals refer to the same. The specific drawings are as follows:
FIG. 1 is a schematic diagram of a cathodic protection system for buried metal structures according to the present utility model;
fig. 2 is a schematic diagram of a second structure of a cathodic protection system of a buried metal structure according to the present utility model.
Detailed Description
The terms first, second, third, etc. or module a, module B, module C and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order, and it is to be understood that the specific order or sequence may be interchanged if permitted to implement embodiments of the utility model described herein in other than those illustrated or described.
The term "comprising" as used in the description and claims should not be interpreted as being limited to what is listed thereafter; it does not exclude other elements or steps. Thus, it should be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps or components, or groups thereof. Thus, the expression "a device comprising means a and B" should not be limited to a device consisting of only components a and B.
Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the utility model. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments as would be apparent to one of ordinary skill in the art from this disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. If there is a discrepancy, the meaning described in the present specification or the meaning obtained from the content described in the present specification is used. In addition, the terminology used herein is for the purpose of describing embodiments of the utility model only and is not intended to be limiting of the utility model. For the purpose of accurately describing the technical content of the present utility model, and for the purpose of accurately understanding the present utility model, the following explanation or definition is given for terms used in the present specification before the explanation of the specific embodiments:
1. a reference electrode (reference electrode) for measuring the potential of the buried metallic structure to the electrolyte. Is the potential difference between the structure to be measured and the reference electrode.
2. The auxiliary anode is arranged on the anode ground bed and is an electrode for providing cathodic protection current in the impressed current cathodic protection system.
3. The polarization probe is a measuring tool for measuring the cathodic protection potential eliminating IR drop.
4. The test pile is a facility which is arranged along the buried pipeline and is used for monitoring and testing the cathodic protection parameters of the pipeline.
5. The cable fault tester consists of a cable fault tester host, a cable fault locator and a cable path meter. The cable fault tester host is used for measuring fault properties of cable faults, and the overall length and approximate position of cable fault points from a testing end. The cable fault locating instrument is used for determining the accurate position of the cable fault point based on the main machine of the cable fault tester determining the approximate position of the cable fault point. For buried cables of unknown strike, a path meter is used to determine the underground strike of the cable.
The technical scheme of the utility model is described in detail below.
Fig. 1 is a schematic diagram of a first structure of a cathodic protection system of a buried metal structure according to the present utility model, as shown in fig. 1, including: the device comprises a potentiostat 1, an explosion-proof wiring device 2, a test pile 3, a reference electrode 4 for control, a potential measuring device 5 and an auxiliary anode 6 with a breaking function;
the potentiostat 1 is respectively connected with a control reference electrode 4, a disconnection-measuring function auxiliary anode 6 and a protected metal structure 7 through an explosion-proof wiring device 2;
the test pile 3 is arranged above the metal structure 7 and is respectively connected with the potential measuring device 5 arranged underground and the protected metal structure 7;
the auxiliary anode 6 with the breaking detection function is arranged underground and laid in the same ditch as the metal structure 7, and the breaking detection cable and the anode cable of the auxiliary anode 6 with the breaking detection function are connected into the explosion-proof wiring device 2.
In some embodiments, as shown in fig. 1, the potentiostat 1 and the explosion-proof wiring device 2 may be provided in 1. As shown in fig. 2, the potentiostat 1 and the explosion-proof wiring device 2 may be provided in plural, and the number of potentiostats 1 and the explosion-proof wiring devices 2 may be the same.
In some embodiments, the positive electrode of the potentiostat 1 is connected to the auxiliary anode 6 of the breaking function through the explosion-proof connection device 2, and the negative electrode of the potentiostat 1 is connected to the metal structure 7 through the explosion-proof connection device 2.
The positive electrode of the potentiostat 1, the explosion-proof wiring device 2 and the auxiliary anode 6 with the breaking function are connected through an anode cable (belonging to the auxiliary anode 6 with the breaking function) (as shown by the arrow-containing line between the potentiostat 1, the explosion-proof wiring device 2 and the auxiliary anode 6 with the breaking function in fig. 1 and 2). Meanwhile, the explosion-proof wiring device 2 is connected with the auxiliary anode 6 of the breaking function through a breaking cable (belonging to the auxiliary anode 6 of the breaking function) (as in fig. 1 and 2, no arrow line exists between the explosion-proof wiring device 2 and the auxiliary anode 6 of the breaking function).
The cathode of the potentiostat 1, the explosion-proof wiring device 2 and the metal structure 7 are connected by a cathode cable (as in the lines comprising arrows between the potentiostat 1, the explosion-proof wiring device 2 and the metal structure 7 in fig. 1 and 2). Meanwhile, the potentiostat 1, the explosion-proof wiring device 2 and the metal structure 7 are also connected through zero lines (such as a dotted line without arrows between the potentiostat 1, the explosion-proof wiring device 2 and the metal structure 7 in fig. 1 and 2). Meanwhile, the potentiostat 1, the explosion-proof wiring device 2 and the control reference electrode 4 are also connected through a long-acting reference electrode wire (as shown by a dotted line between the potentiostat 1, the explosion-proof wiring device 2 and the control reference electrode 4 in fig. 1 and 2).
In some embodiments, the explosion proof wiring device 2 is an outdoor explosion proof wiring box or a buried explosion proof wiring box.
The explosion-proof wiring device 2 has an explosion-proof protection level of ExdIIBT4 IP55 or higher, and is suitable for outdoor installation.
In some embodiments, as shown in fig. 1 and 2, the test peg 3 and the potential measuring device 5 may be provided in plural, and the number of the test pegs 3 and the potential measuring device 5 is the same.
In some embodiments, the test stake 3 may be a conventional test stake in a non-intelligent cathodic protection system. In the intelligent cathodic protection system, the test stake 3 is an intelligent test stake. As shown in fig. 2, the cathodic protection system of the utility model can also be added with an intelligent monitoring function, the test pile 3 can be an intelligent test pile, and can comprise a power module, an acquisition module, a control module, a communication module and the like, the potentiostat 1 is an intelligent potentiostat, parameters of the potentiostat and cathodic protection data acquired by the intelligent test pile can be sent to a server through the communication module, the communication module can be an internet of things, a Beidou satellite system, a WIFI, an RS485, a bluetooth and the like, and the server can be one or more servers or a cloud service platform, so that the intellectualization and automation of cathodic protection data acquisition are realized.
In the utility model, the common test pile or the intelligent test pile can be preferably a steel pipe test pile, and the steel pipe test pile is made of stainless steel pipes or galvanized steel pipes.
In some embodiments, the potentiometric device 5 is a reference electrode or a polarized probe.
In some embodiments, the control reference electrode 4 and the potentiometric device 5 are made of copper or high-purity zinc.
That is, the reference electrode or polarization probe used for the control reference electrode 4 and the potentiometric device 5 may be preferably a copper sulfate reference electrode/polarization probe, or may be preferably a high-purity zinc reference electrode or a high-purity zinc polarization probe.
In some embodiments, further comprising: an instrument with a breaking detection function is connected with the explosion-proof wiring device 2.
In some embodiments, the instrument with a fault detection function is a cable fault tester. The cable fault tester is the prior art, and the breakpoint position of the auxiliary anode can be rapidly determined through the broken cable of the explosion-proof junction box.
In some embodiments, the auxiliary anode with the breaking function is preferably an MMO/Ti linear anode with the breaking function, and an auxiliary anode with the breaking function can also be adopted.
The working principle of the cathode protection system of the buried metal structure is as follows:
(1) The potentiostat is used as a driving power supply, a signal source is provided according to a reference electrode for control, which is buried underground, a proper cathodic protection current is provided for a cathodic protection system, the cathodic protection current flows to the auxiliary anode with the disconnection detection function through an anode cable of the auxiliary anode with the disconnection detection function by an explosion-proof wiring device, then flows to the outer wall (a current flow line of the section is not shown) of a protected metal structure (comprising a buried pipeline) through the auxiliary anode with the disconnection detection function, and then flows back to the potentiostat through a cathodic electrifying point (a point where the cathodic cable is connected with the protected metal structure) on the protected metal structure, so that the outer wall of the buried steel pipeline is prevented from corrosion, and an arrow shown in fig. 1 is the flow direction of the current.
(2) The cathodic protection system detects the protection potential of the protected metal structure through the test pile and the potential measuring device so as to ensure that the potential of the detection point of the outer wall of the protected metal structure meets the requirements of-850 mV (CSE) to-1200 mV (CSE).
(3) When the potential of the detection point does not meet the requirement, the cathode protection system has problems, and the parameters (output current, output voltage and protection potential) of the potentiostat are obtained from the potentiostat to conduct fault detection, such as short circuit, open circuit and the like. This part is prior art.
(4) When the break points in the cathode protection system are determined, the cathode cable and the anode cable can be directly detected through the existing cable fault instrument and other equipment. When the anode bed (the auxiliary anode with the breaking function) is confirmed to have a break point by the elimination method, the break point position of the anode bed (the anode cable of the auxiliary anode with the breaking function) can be rapidly determined through the cable fault tester and the breaking cable connected into the explosion-proof junction box, the break point is excavated, the special joint technology is used for connection and repair, and finally backfilling is carried out, so that a great amount of manpower and time can be saved.
The utility model has the following beneficial effects:
(1) The auxiliary anode of the cathode protection system adopts an auxiliary anode with a disconnection detection function, the breakpoints of the anode land bed can be rapidly and conveniently detected and repaired by utilizing the existing cable fault instrument, the problems that the breakpoints of the anode land bed in the impressed current cathode protection system are difficult to detect and the anode land bed fails in the service life are solved, and the maintenance cost of the cathode protection system is reduced.
(2) The anode ground bed is a near-anode ground bed, has uniform protection potential distribution and high current utilization rate, and has small interference to other buried metal structures.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the utility model, which fall within the scope of the utility model.
Claims (10)
1. A cathodic protection system for a buried metallic structure, comprising: the device comprises a potentiostat (1), an explosion-proof wiring device (2), a test pile (3), a reference electrode (4) for control, a potential measuring device (5) and an auxiliary anode (6) with a disconnection measuring function;
the potentiostat (1) is respectively connected with the control reference electrode (4), the auxiliary anode (6) with the disconnection measuring function and the protected metal structure (7) through the explosion-proof wiring device (2);
the test pile (3) is arranged above the metal structure (7) and is respectively connected with the potential measuring device (5) and the metal structure (7) which are arranged underground;
the auxiliary anode (6) with the breaking function is arranged underground and laid in the same ditch with the metal structure (7), and a breaking cable and an anode cable of the auxiliary anode (6) with the breaking function are connected into the explosion-proof wiring device (2).
2. The cathodic protection system of a buried metal structure according to claim 1, wherein said potentiostat (1) and said explosion-proof wiring device (2) are provided in plurality, and the number of potentiostats (1) and said explosion-proof wiring devices (2) is the same.
3. The cathodic protection system of a buried metal structure according to claim 1, characterized in that the positive electrode of the potentiostat (1) is connected to the auxiliary anode (6) of the breaking function by means of the explosion-proof wiring device (2), and the negative electrode of the potentiostat (1) is connected to the metal structure (7) by means of the explosion-proof wiring device (2).
4. The cathodic protection system of a buried metallic structure according to claim 1, characterized in that said explosion-proof junction device (2) is an outdoor explosion-proof junction box or a buried explosion-proof junction box.
5. The cathodic protection system of a buried metallic structure according to claim 1, wherein said test piles (3) and said potential measuring devices (5) are provided in plurality, and the number of said test piles (3) and said potential measuring devices (5) is the same.
6. The cathodic protection system of a buried metallic structure according to claim 1, wherein said test pile (3) is an intelligent test pile.
7. The cathodic protection system of a buried metallic structure according to claim 1, wherein said potential measuring device (5) is a reference electrode or a polarized probe.
8. The cathodic protection system of a buried metal structure according to claim 1, wherein the control reference electrode (4) and the potential measuring device (5) are made of copper or high-purity zinc.
9. The cathodic protection system of a buried metallic structure of claim 1, further comprising: and the instrument with the breaking detection function is connected with the explosion-proof wiring device (2).
10. The cathodic protection system of a buried metallic structure according to claim 9, wherein said instrument having a function of detecting breakage is a cable failure tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321383669.4U CN219772263U (en) | 2023-06-01 | 2023-06-01 | Cathode protection system for buried metal structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321383669.4U CN219772263U (en) | 2023-06-01 | 2023-06-01 | Cathode protection system for buried metal structures |
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| Publication Number | Publication Date |
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| CN219772263U true CN219772263U (en) | 2023-09-29 |
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| CN202321383669.4U Active CN219772263U (en) | 2023-06-01 | 2023-06-01 | Cathode protection system for buried metal structures |
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| CN (1) | CN219772263U (en) |
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2023
- 2023-06-01 CN CN202321383669.4U patent/CN219772263U/en active Active
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