CN108486576B - Flexible anode and detection system - Google Patents
Flexible anode and detection system Download PDFInfo
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- CN108486576B CN108486576B CN201810428602.5A CN201810428602A CN108486576B CN 108486576 B CN108486576 B CN 108486576B CN 201810428602 A CN201810428602 A CN 201810428602A CN 108486576 B CN108486576 B CN 108486576B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/16—Electrodes characterised by the combination of the structure and the material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
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- Mechanical Engineering (AREA)
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Abstract
The application provides a flexible anode and a detection system. The flexible anode includes: a flexible conductor; and the leakage detection element is parallel to the flexible conductor and is arranged at intervals and is used for detecting whether leakage occurs in the oil storage equipment. The flexible anode not only comprises a flexible conductor used as anode protection, but also comprises a leakage detection element, so that the leakage detection element and an anode protection electrode are integrated together, and further, the problem that the leakage detection element and the anode protection electrode need to be laid twice when being applied is avoided, the construction process is simplified, the construction efficiency is improved, and the manpower and material resource consumption caused by construction is reduced.
Description
Technical Field
The application relates to the field of petroleum, in particular to a flexible anode and a detection system.
Background
With the development of petrochemical industry, a large number of oil storage equipment and pipelines are established, if leakage occurs, the local ecological environment is seriously affected, and the oil storage equipment and the pipelines become an invisible killer in the field of safety and environmental protection. Therefore, it is important to explore a high-efficiency oil storage device leakage detection technology, discover leakage in time and take effective measures before the oil storage device leaks in an initial stage or is not diffused.
At present, the leakage detection method of the oil storage equipment widely applied at home and abroad mainly comprises the following steps:
(1) The manual gauge measurement judges whether the oil storage equipment leaks or not through the modes of liquid level change in the tank, disc library calculation and appearance inspection, and the method has the defects of being influenced by personnel operation, oil temperature and liquid level dynamic change and low in precision.
(2) The volume/mass measuring system evaluates the running state of the oil storage equipment by analyzing the data such as stock, oil delivery, metering, temperature and the like of the oil storage equipment in a certain period and judges whether leakage occurs or not, and has the defect of being only suitable for the effective volume of not more than 80m 3 Is a small-sized oil storage device.
(3) The manual drilling method is to drill detection holes reaching the sand cushion along the circumference of the tank, seal the holes by silica gel, periodically detect oil gas by using a high-sensitivity photoionization oil gas content detector, and judge whether leakage occurs in oil storage equipment. The method can rapidly judge whether the oil storage equipment leaks or not, and can be applied to the oil storage equipment for designing the basic leak detection layer, and the defect is that the leakage position and the leakage degree of the bottom plate of the oil storage equipment can be roughly judged and cannot be completely and accurately positioned.
(4) The method for detecting the off-line oil storage equipment comprises the following steps: and (3) aiming at the shutdown oil storage equipment or planning to repair the oil storage equipment, cleaning and ventilating the oil storage equipment, and opening the tank to perform leakage detection. The disadvantage is that the oil storage equipment must be in a shutdown state and automatic real-time monitoring cannot be realized.
(5) Leakage is monitored in real time by laying an induction cable at the bottom of the tank. After leakage occurs, the oil leakage sensing cable developed by the company Tyco Thermal Control in the United states sends a signal to the controller, and the signal is processed by the microprocessor to give an alarm and display the leakage position.
Besides the oil leakage induction cable, the method for embedding detection elements in the tank foundation, the conductive powder element monitoring method, the electric field induction technology, the optical fiber monitoring method and the like, detection equipment is paved in the oil storage equipment foundation in advance in the methods.
The leakage detection method of the induction cable overcomes the technical defects of the other four methods, but when the leakage detection method is applied to pipelines and oil storage equipment, the leakage detection induction cable and a flexible anode for a cathode protection system are respectively laid, so that manpower and financial resources are wasted, and the construction efficiency of engineering construction is affected.
Disclosure of Invention
The application mainly aims to provide a flexible anode and a detection system, which are used for solving the problem of lower construction efficiency caused by the fact that a flexible anode and an induction cable for detecting leakage in the prior art are required to be respectively laid.
In order to achieve the above object, according to one aspect of the present application, there is provided a flexible anode comprising: a flexible conductor; and the leakage detection element is parallel to the flexible conductor and is arranged at intervals, and the leakage detection element is used for detecting whether leakage occurs in the oil storage equipment or not.
Further, the distance of the flexible conductor from the leak detection element is greater than or equal to half the maximum width of the cross section of the flexible conductor.
Further, the leak detection element comprises a cable sensor and/or an inductive cable.
Further, the cross-sectional area of the leak detection element is 10-70 mm 2 Between them.
Further, the flexible conductor is a metal core cable, and the metal core cable includes: a metal core; and the conductive polymer coating layer is sleeved outside the metal core.
Further, the flexible anode further includes: a filler layer, said flexible conductor and said leak detection element being disposed in said filler layer.
Further, the flexible anode further includes: and the anode core is arranged in the packing layer, the anode core comprises a plurality of core section bodies which are sequentially connected, each core section body comprises a body part and a connecting part connected with the body part, each body part is arranged in parallel with the flexible conductor, and each connecting part is electrically connected with the flexible conductor.
Further, the flexible anode further includes: a sheath layer wrapping the surface of the filler layer away from the flexible conductor; and the wear-resistant layer is wrapped on the surface of the sheath layer, which is far away from the filler layer.
According to another aspect of the present application, there is provided a detection protection system comprising a flexible anode, the flexible anode being any of the flexible anodes described above.
Further, the detection protection system further includes: and the monitoring unit is electrically connected with the flexible anode and is used for monitoring leakage information of the oil storage equipment.
By applying the technical scheme of the application, the flexible anode not only comprises the flexible conductor used as anode protection, but also comprises the leak detection element, so that the leak detection element and the anode protection electrode are integrated together, thereby avoiding the problem that the leak detection element and the anode protection electrode need to be laid twice when being applied, simplifying the construction process, improving the construction efficiency and reducing the manpower and material resource consumption caused by construction.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of a flexible anode according to the application;
FIG. 2 shows a schematic structural view of another embodiment of a flexible anode of the present application;
FIG. 3 shows a schematic structural view of yet another embodiment of a flexible anode of the present application; and
fig. 4 shows a block diagram of an embodiment of a detection system of the present application.
Wherein the above figures include the following reference numerals:
10. a flexible anode; 11. a flexible conductor; 12. a leak detection element; 13. a filler layer; 14. an anode core; 15. a sheath layer; 16. a wear-resistant layer; 17. a waterproof insulating layer; 111. a metal core; 112. a conductive polymer coating; 141. a body portion; 142. a connection part; 20. a control unit; 30. and a monitoring unit.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, when the flexible anode and the induction cable for detecting leakage in the prior art are applied to the oil storage device, the flexible anode and the detection system are required to be laid respectively, so that the construction efficiency of the guide is low.
In an exemplary embodiment of the present application, a flexible anode is provided, as shown in fig. 1, 2 and 3, comprising a flexible conductor 11 and a leak detection element 12, wherein the flexible conductor is used for anode protection, i.e. for inhibiting corrosion of metal structures and oil storage equipment; the leak detection element 12 is arranged parallel to and spaced from the flexible conductor 11, and the leak detection element 12 is used for detecting whether the oil storage device leaks.
The flexible conductor is connected to the positive electrode of the external power supply, the protected body such as the pipeline is connected to the negative electrode to form a loop, and after the power is applied, the cathode protection current is uniformly dispersed to each part through the flexible conductor, so that the protected body is completely protected. The flexible conductor enables the protection current to be uniformly distributed without being influenced by the surface and geographical conditions of the protected body, and under the condition of application environment, the output current attenuation rate (the length of single-point power supply unidirectional protection of the flexible conductor) of the flexible conductor is directly determined by the ratio of the transverse current dispersion resistance and the longitudinal resistance of the flexible conductor in unit length. The larger the transverse current-dispersing resistance per unit length is, the smaller the longitudinal current-dispersing resistance per unit length is, the smaller the transverse output current attenuation rate of the flexible conductor along the longitudinal direction is, and the longer the protection distance is.
When the flexible anode is laid, the flexible anode can be laid in sections under the condition of ensuring the current required by the cathode protection system in order to save the cost, namely, the length of each section of flexible anode is less than 10 meters, and the flexible anode is provided with a flexible conductor and a detection element with certain lengths and is connected with the flexible conductor and the detection element of the other section of flexible anode.
The flexible anode of the present application is buried underground, typically on the floor of an oil storage facility or along with a pipe.
The oil storage device of the present application may be any device capable of storing oil in the prior art, typically a storage tank.
The flexible anode not only comprises a flexible conductor used as anode protection, but also comprises a leakage detection element, so that the leakage detection element and an anode protection electrode are integrated together, and further, the problem that the leakage detection element and the anode protection electrode need to be laid twice when being applied is avoided, the construction process is simplified, the construction efficiency is improved, and the manpower and material resource consumption caused by construction is reduced.
In one embodiment of the application, the distance of the flexible conductor 11 from the leak detection element 12 is greater than or equal to half the maximum width of the cross section of the flexible conductor 11. The distance here refers to the distance between the center of the flexible conductor and the center of the leak detection element. When the flexible conductor and the leak detection element are both cylindrical, then the distance refers to the distance between the centerline of the flexible conductor and the centerline of the leak detection element.
In a specific embodiment of the present application, both the flexible conductor and the leak detection element are cylindrical structures.
The leak detection element of the present application may be any element that can be used to detect whether a leak has occurred in an oil storage device, and those skilled in the art may select an element having a suitable structure as the leak detection element of the present application according to the actual circumstances. For example, a conductive powder element or an optical fiber having a detection function.
In another embodiment of the present application, the leak detection element 12 includes a cable sensor and/or an inductive cable, i.e., the leak detection element may include only the cable sensor or only the inductive cable, although it may include both the cable sensor and the inductive cable.
The induction cable is very sensitive to liquid hydrocarbon (such as diesel oil, engine oil, gasoline, aviation fuel oil and the like), if the induction cable encounters the liquid hydrocarbon, the change of a radar waveform chart in the cable is caused, so that the purpose of alarming is achieved, and meanwhile, the position of a leakage point can be accurately judged according to the time of radar wave reflection back to a corresponding unit.
Specifically, when leak detection element 12 comprises an inductive cable, a failure of the inductive cable is detected by continuously transmitting a safety pulse wave (e.g., 2000 times per second) to the inductive cable.
The cable sensor is a cable-type sensor, and when the leak detection element includes the cable-type sensor, the leak is detected by a change in vibration wave, sound wave, pressure wave, resistance, or the like emitted from the sensor.
In order to more accurately detect leakage of the oil storage device, ensure that the filler layer has a larger volume, further ensure that the flexible anode can be bent with a proper degree of curvature, and at the same time ensure that the flexible anode has a lower cost as much as possible, in one embodiment of the application, the cross-sectional area of the leak detection element 12 is between 10 and 70mm 2 Between them.
Of course, the cross-sectional area of the leak detection element of the present application is not limited to the above-described range, and those skilled in the art can select a leak detection element having an appropriate cross-sectional area according to the actual circumstances.
Unless otherwise specified, the cross-sectional area of the present application refers to a cross-sectional area perpendicular to the longitudinal direction of the flexible conductor, for example, the longitudinal direction of a cylindrical flexible conductor refers to the height direction of the cylindrical body.
The flexible conductor in the present application may be of any structure as long as it includes a flexible conductor. The person skilled in the art can choose a flexible conductor with a suitable structure according to the actual situation.
In order to further ensure that the flexible conductor has a good protection effect, in one embodiment of the present application, as shown in fig. 3, the flexible conductor 11 is a metal core cable, and the metal core cable includes a metal core 111 and a conductive polymer coating layer 112. The conductive polymer coating layer 112 is sleeved outside the metal core 111.
In an embodiment of the application not shown in the drawings, an insulating sheath layer is also provided between the metal core and the conductive polymer coating in fig. 3.
In a specific embodiment, the metal core is a copper core, and the copper core has good conductivity and good flexibility, so that the protection effect of the flexible anode on the cathode can be further ensured.
Of course, the metal core of the present application is not limited to the copper core described above, and may be other metal cores having good flexibility. Those skilled in the art can select a suitable material to form the metal core of the present application according to the actual circumstances.
In order to reduce the longitudinal resistance of the flexible conductor per unit length, thereby realizing the protection of the buried pipeline and the cathode of the oil storage equipment which require larger drainage density, and simultaneously ensuring lower manufacturing cost of the flexible anode, in one embodiment of the application, the cross section area of the metal core 111 is 10-70 mm 2 Between them.
Of course, the cross-sectional area of the metal core of the present application is not limited to the above-described range, and a person skilled in the art may select a metal core having an appropriate cross-sectional area to form the flexible conductor of the present application according to practical circumstances.
In order to increase the conductivity of the flexible conductor and to better protect the flexible conductor, in one embodiment of the application, as shown in fig. 1-3, the flexible anode further comprises a filler layer 13, the flexible conductor 11 and the leak detection element 12 being arranged in the filler layer 13. The packing layer can discharge bubbles generated by the flexible conductor, and the resistance is reduced.
In a specific embodiment of the present application, the filler layer is a coke powder layer, that is, a structural layer formed by coke powder, and the carbon powder layer has a larger gap, so that gas generated by the flexible conductor can be well discharged, and the conductivity of the flexible conductor can be well improved.
The material of the filler layer of the present application is not limited to the above-mentioned coke layering, but may be other structural layers formed of materials having similar properties to the coke powder layer, and those skilled in the art may select specific materials to form the filler layer according to actual situations.
In still another embodiment of the present application, as shown in fig. 3, the flexible anode further includes an anode core 14, the anode core 14 is disposed in the filler layer 13, the anode core 14 includes a plurality of core segments sequentially connected, each of the core segments includes a body portion 141 and a connection portion 142 connected to the body portion 141, each of the body portions 141 is disposed in parallel with the flexible conductor 11, each of the connection portions 142 is electrically connected to the flexible conductor 11, and the flexible conductor can be more conveniently electrically connected to the negative electrode of the power supply through the anode core.
In a specific embodiment, the anode core is an MMO/Ti wire, and the MMO/Ti wire has good electric conductivity and the like. Of course, the anode core of the present application is not limited to the MMO/Ti wire, but may be other suitable materials, and those skilled in the art may select suitable materials to form the anode core according to practical situations, which will not be described herein.
In order to further ensure the stability of the electrical connection of the flexible conductor to the anode core, in one embodiment of the application, the length of the core segment is between 1 and 3m, i.e. the flexible conductor and the anode core are electrically connected every 1 to 3 m.
In still another embodiment of the present application, as shown in fig. 3, the flexible anode further includes a waterproof insulating layer 17, and the waterproof insulating layer 17 is wrapped around the outside of the electrical connection between the connection portion and the flexible conductor 11 and is located in the carbon powder layer. The waterproof insulating layer 17 can well protect the connecting part and the flexible conductor at the electric connection part, and further ensures the stability of the electric connection of the connecting part and the flexible conductor.
In order to further protect the flexible anode and further ensure the stability of the performance of the flexible anode, in one embodiment of the application, as shown in fig. 3, the flexible anode further comprises a fiber sheath layer 15, wherein the fiber sheath layer 15 is wrapped on the surface far away from the flexible conductor 11, namely, the outside of the filler layer 13, and the fiber sheath layer is made of chemical fiber materials, so that the flexible anode with different transverse and longitudinal resistance ratios can be conveniently and effectively produced, the adjustability of the current attenuation rate of the flexible anode is increased, and the problem that the current attenuation rate of the conventional flexible anode product cannot meet the requirements under the condition of needing larger drainage density and longer protection distance is solved, and the application range of the flexible anode product in cathode protection projects of buried pipelines and oil storage equipment is increased.
The material of the fiber sheath layer can be chemical fiber material with the weaving density between 170T and 430T. Specifically, the chemical fiber material may be nylon 210T, terylene 210T, vinylon, acrylon, chloridion, polypropylene, polyethylene or waterproof terylene.
Specifically, according to the external conditions of the use environment, the chemical fiber materials used can be changed, and the output current attenuation rate of the flexible anode can be changed to ensure that the length of the single-point power supply unidirectional protection of the flexible anode meets the requirement of the protected body on external current.
In a specific embodiment, as shown in fig. 3, the flexible anode further comprises a wear-resistant layer 16, and the wear-resistant layer 16 is wrapped on a surface far away from the filler layer 13, i.e. wrapped on the outside of the sheath layer 15, for protecting the fiber sheath layer 15 from abrasion.
In order to further ensure that the flexible anode can perform better protection and detection functions, in one embodiment of the application, the cross section area of the flexible anode is between 10 and 70mm 2 Between them.
In another exemplary embodiment of the present application, a detection system is provided that includes a flexible anode 10, the flexible anode 10 being any of the flexible anodes described above.
The detection system comprises the flexible anode, so that not only can the oil storage equipment and the like be protected, but also leakage detection can be carried out on the oil storage equipment, and the detection system is simpler to lay, only needs to lay once, and can lay the leakage detection element and the flexible conductor at the preset position under the ground, and the leakage detection element and the flexible conductor are not required to be laid respectively, so that the construction cost is lower and the efficiency is higher.
In a specific embodiment, as shown in fig. 4, the detection protection system further includes a monitoring unit 30 electrically connected to the flexible anode, where the monitoring unit 30 is configured to monitor leakage information of the oil storage device.
The detection system comprises different units depending on the leak detection element in the actual flexible anode. When the flexible anode comprises a cable type sensor, the detection system further comprises a signal receiving and processing unit, the signal receiving and processing unit receives signals sent by the sensor and processes the signals to obtain leakage signals, and the leakage position of the oil storage device is judged according to the corresponding leakage signals.
When the flexible anode comprises an induction cable, the detection system further comprises a signal transmitting unit and an induction interface unit, the signal transmitting unit is electrically connected with the induction interface unit, the induction interface unit is electrically connected with the induction cable, the signal transmitting unit transmits safe pulse waves and transmits the safe pulse waves to the induction cable through the induction interface unit, if the induction cable senses liquid hydrocarbon, the liquid hydrocarbon can cause the radar waveform diagram in the cable to change, and the position of a leakage point can be accurately judged according to the time of the radar waves reflected back to the induction interface unit.
In a specific embodiment, the detection system further includes a control unit 20, where the control unit 20 includes a transmitting module and an inductive interface module, the transmitting module is used to transmit signals, and the inductive interface module controls the transmission and the reception of the signals.
In addition, the control unit may include a main control module and a plurality of auxiliary control modules, each of which controls the operation of a section of flexible anode, the main control module is electrically connected with each of the auxiliary control modules to control each of the auxiliary control modules, and the main control module and the auxiliary control modules may include a transmitting module and an inductive interface module, each of the transmitting modules correspondingly transmits a safety pulse signal to a section of flexible anode, and each of the inductive interface modules correspondingly controls the transmission and reception of a signal of one of the transmitting modules.
The external interface of the control unit can be connected with a host computer or can realize remote monitoring on the control unit in the form of telephone call.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
1) The flexible anode provided by the application not only comprises the flexible conductor used as anode protection, but also comprises the leak detection element, so that the leak detection element and the anode protection electrode are integrated together, the problem that the leak detection element and the anode protection electrode need to be laid twice when being applied is further avoided, the construction process is simplified, the construction efficiency is improved, and the manpower and material resource consumption caused by construction is reduced.
2) The detection system provided by the application comprises the flexible anode, so that not only can the oil storage equipment and the like be protected, but also leakage detection can be performed on the oil storage equipment, and the detection system is simpler to lay, and can lay the leakage detection element and the flexible conductor at the preset position under the ground only by one-time laying, and the leakage detection element and the flexible conductor are not required to be laid respectively, so that the construction cost is lower and the efficiency is higher.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. A flexible anode, the flexible anode comprising:
a flexible conductor (11); and
the leakage detection element (12) is arranged in parallel with the flexible conductor (11) at intervals, and the leakage detection element (12) is used for detecting whether leakage occurs in oil storage equipment or not;
the flexible anode further comprises:
-a filler layer (13), the flexible conductor (11) and the leak detection element (12) being arranged in the filler layer (13);
the flexible anode further comprises:
an anode core (14) disposed in the filler layer (13), the anode core (14) including a plurality of core segments connected in sequence, each of the core segments including a body portion (141) and a connection portion (142) connected to the body portion (141), each of the body portions (141) being disposed in parallel with the flexible conductor (11), each of the connection portions (142) being electrically connected to the flexible conductor (11);
the flexible anode further comprises:
a sheath layer (15) wrapping the surface of the filler layer (13) away from the flexible conductor (11); and
and the wear-resistant layer (16) is wrapped on the surface of the sheath layer (15) which is far away from the filler layer (13).
2. A flexible anode according to claim 1, characterized in that the distance of the flexible conductor (11) from the leak detection element (12) is greater than or equal to half the maximum width of the cross section of the flexible conductor (11).
3. Flexible anode according to claim 1, characterized in that the leak detection element (12) comprises a cable sensor and/or an inductive cable.
4. A flexible anode according to claim 1, wherein the cross-sectional area of the leak detection element (12) is between 10 and 70mm 2 Between them.
5. A flexible anode according to claim 1, characterized in that the flexible conductor (11) is a metal core cable comprising:
a metal core (111); and
and a conductive polymer coating layer (112) sleeved outside the metal core (111).
6. A detection protection system comprising a flexible anode (10), characterized in that the flexible anode (10) is a flexible anode according to any one of claims 1 to 5.
7. The detection and protection system of claim 6, further comprising:
and the monitoring unit (30) is electrically connected with the flexible anode, and the monitoring unit (30) is used for monitoring leakage information of the oil storage equipment.
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