CN220099184U - Special-shaped sacrificial anode and cathode protection system thereof - Google Patents
Special-shaped sacrificial anode and cathode protection system thereof Download PDFInfo
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- CN220099184U CN220099184U CN202320465932.8U CN202320465932U CN220099184U CN 220099184 U CN220099184 U CN 220099184U CN 202320465932 U CN202320465932 U CN 202320465932U CN 220099184 U CN220099184 U CN 220099184U
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- 238000004210 cathodic protection Methods 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model discloses a special-shaped sacrificial anode which comprises an anode body and an anode core, wherein the anode body is of an annular structure, the anode core comprises an embedded part and a connecting part, the embedded part of the anode core is embedded in the anode body and is cast with the anode body into a whole, one end of the connecting part is fixedly connected with the embedded part, and the other end of the connecting part penetrates out of the anode body. The utility model has the advantages of simple structure, small volume, convenient arrangement, high reliability and long service life.
Description
Technical Field
The utility model relates to the technical field of cathodic protection, in particular to a special-shaped sacrificial anode and a cathodic protection system thereof.
Background
According to the current latest standard requirements, a corrosion control system with an anticorrosive layer assisted by cathode protection is required to be adopted for a new steel pipeline for fuel gas in urban communities. The current implementation is also carried out according to the traditional sacrificial anode method, namely, sacrificial anodes with larger specifications are laid on the periphery of the pipeline in groups. Because the conditions of the cells are complicated and different from place to place, the pipelines are laid in a net shape, and the following problems are considered in the implementation of cathode protection of the cell pipelines: municipal facilities around the buried pipelines of the district are complex and dense, the workload of early-stage investigation and analysis of cathodic protection is large, the influence of stray current interference is large, and the construction technology difficulty is high; when the cathodic protection engineering is implemented, the technical effectiveness is ensured, the environmental geographic characteristics are fully considered, and the destruction of municipal surface facilities in the current state of large-area cities is avoided as much as possible.
At present, a steel pipeline coated with an anti-corrosion layer is adopted for the urban district gas pipeline. The heat supply, water supply and drainage, electric power, communication and the like of the cells are densely distributed, and only a close-range protection mode, namely a sacrificial anode and cathode protection mode, can be adopted in consideration of the fact that interference cannot be generated to other facilities. Compared with a high-voltage or medium-voltage pipeline, the cell pipeline has small pipe diameter, more branches and less cathodic protection current required for unit length, so that a small-specification sacrificial anode is considered.
The existing sacrificial anode is influenced by the shape and the size of the sacrificial anode, and has the problems of low current efficiency, large resource waste and short service life in practical application. As Chinese utility model disclosure CN205368501U discloses a sacrificial anode based on a sacrificial anode protection method; a sacrificial anode for cathodic protection is also disclosed in chinese patent publication CN 212375385U. The two are larger in size, so that resource waste is easy to cause if the two are arranged under the working condition of the district, and large-area excavation is needed during arrangement; in addition, the anode cores of the two are only connected at half positions inside the sacrificial anode body, so that the sacrificial anode is easy to be partially failed due to uneven consumption, and further the service performance and the service life of the sacrificial anode are easy to be reduced.
Disclosure of Invention
The special-shaped sacrificial anode has the advantages of simple structure, small volume, convenient arrangement, high reliability, long service life, convenient replacement and the like.
In order to achieve the technical purpose, the utility model discloses a special-shaped sacrificial anode which comprises an anode body and an anode core, wherein the anode body is of an annular structure, the anode core comprises an embedded part and a connecting part, the embedded part of the anode core is embedded in the anode body and is cast into a whole with the anode body, one end of the connecting part is fixedly connected with the embedded part, and the other end of the connecting part penetrates out of the anode body.
Further, according to the special-shaped sacrificial anode, the embedded part and the connecting part of the anode core are integrally formed through casting.
Further, the utility model relates to a special-shaped sacrificial anode, wherein the anode body is annular.
Furthermore, the special-shaped sacrificial anode is characterized in that the anode body is made of magnesium alloy or zinc alloy.
The utility model also discloses a cathodic protection system applying the special-shaped sacrificial anode, which comprises a battery, a potential acquisition instrument, a reference electrode and a sacrificial anode bag, wherein the battery is connected with the potential acquisition instrument, the potential acquisition instrument is connected with a pipeline through a cable, the reference electrode and the sacrificial anode bag are buried near the pipeline, the reference electrode is connected with the pipeline through the potential acquisition instrument, the sacrificial anode bag comprises a cloth bag, a filler and the special-shaped sacrificial anode, the filler and the special-shaped sacrificial anode are arranged in the cloth bag, the connecting part of the special-shaped sacrificial anode core is connected with the pipeline through the potential acquisition instrument, and the potential acquisition instrument is used for acquiring and uploading the pipeline potential, the special-shaped sacrificial anode output current and the pipeline alternating current interference voltage.
Further, the utility model provides a cathode protection system, wherein the packing material comprises gypsum powder, bentonite and sodium sulfate.
Further, the utility model relates to a cathode protection system, wherein the special-shaped sacrificial anode is positioned at the center of the filler in the cloth bag.
Furthermore, the utility model relates to a cathode protection system, wherein the battery and the potential acquisition instrument are arranged in a cathode protection well, and a well cover is arranged at the well mouth of the cathode protection well.
The beneficial effects of the utility model are as follows: according to the utility model, the anode body and the anode core are arranged, the anode body is designed into an annular structure, the anode core is divided into the embedded part and the connecting part, the embedded part of the anode core is embedded in the anode body and is cast into a whole with the anode body, one end of the connecting part is fixedly connected with the embedded part, and the other end of the connecting part penetrates out of the anode body for connecting a pipeline, so that the special-shaped sacrificial anode with small volume, convenient arrangement, high reliability and long service life is formed. Because the anode body is annular, compared with a conventional rod-shaped sacrificial anode, the surface area is increased, and the grounding resistance is reduced, so that larger protection current can be provided, and the protection effect on a pipeline is improved; the anode body is designed to be annular, so that the middle part of the anode body is hollow, and the overall weight, the use amount of nonferrous metal and self consumption can be reduced on the premise of ensuring the use performance; the device has small volume, and can realize small excavation or even no excavation during arrangement; because the embedded part of the anode core is completely embedded into the anode body, even if the condition of uneven consumption occurs, other parts of the anode body can still normally exert the effect, and the circuit is kept smooth, so that the whole sacrificial anode is not invalid due to uneven consumption, and the use reliability and the service life are improved.
Drawings
FIG. 1 is a schematic perspective view of a shaped sacrificial anode according to the present utility model;
FIG. 2 is a schematic cross-sectional view of a shaped sacrificial anode according to the present utility model;
FIG. 3 is a schematic diagram of a cathodic protection system according to the present utility model;
FIG. 4 is a schematic view of a sacrificial anode bag in a cathodic protection system according to the present utility model;
Detailed Description
A shaped sacrificial anode according to the present utility model will be explained and illustrated in detail below with reference to the drawings.
As shown in fig. 1 and fig. 2, the utility model discloses a special-shaped sacrificial anode, wherein an anode body 1 and an anode core 2 are arranged, the anode body 1 is designed into an annular structure, the anode core 2 is divided into an embedded part 21 and a connecting part 22, the embedded part 21 of the anode core 2 is embedded into the inside of the anode body 1 and is cast into a whole with the anode body 1, one end of the connecting part 22 is fixedly connected with the embedded part 21, and the other end of the connecting part 22 penetrates out of the anode body 1 and is used for being connected with a pipeline 7, so that the special-shaped sacrificial anode is small in size, convenient to arrange, high in reliability and long in service life.
It should be noted that, the anode body 1 is generally made of magnesium alloy or zinc alloy; the shape of the anode body 1 is generally designed as a circular ring, although ring structures surrounded by other shapes are not excluded; in order to ensure uniformity of the characteristics of the anode core 2 itself, the embedded portion 21 and the connecting portion 22 of the anode core 2 are integrally formed by casting.
In actual use, the embedding mode of the special-shaped sacrificial anode with small specification provided by the utility model is as follows: the special-shaped sacrificial anodes with small specifications are uniformly embedded in the vicinity of the trunk pipes and the branch pipes of the mesh pipelines in the cells in a distributed manner, so that the purpose of uniformly protecting the whole pipe network of the cells is achieved. The problems that one to two groups of large-size sacrificial anodes are buried in corners of a cell in a traditional sacrificial anode laying mode, the protection current is uneven, the excavation area is large in later replacement and the like can be effectively avoided. Compared with a high-voltage or medium-voltage pipeline, the cell pipeline has small pipe diameter, more branches and less cathode protection current required by unit length, so that a small-specification sacrificial anode can be adopted, and the consumption of nonferrous metals is reduced. Therefore, the anode body 1 is designed into a ring shape, compared with a conventional rod-shaped sacrificial anode, the surface area is increased, the grounding resistance is reduced, and therefore, larger protection current can be provided, and the protection effect on the pipeline 7 is improved; the anode body 1 is designed to be annular, so that the inner side of the anode body is hollow, and the overall weight, the use amount of nonferrous metal and self consumption can be reduced on the premise of ensuring the use performance; the device has small volume, and can realize small excavation or even no excavation during arrangement or later replacement; because the embedded part 21 of the anode core 2 is completely embedded into the anode body 1, even if uneven consumption occurs, other parts of the anode body 1 can still normally exert effects, and a circuit is kept smooth, so that the whole anode is not damaged due to uneven consumption, and the use reliability and the service life are improved.
As shown in fig. 3 in combination with fig. 4, the utility model also discloses a cathodic protection system using the special-shaped sacrificial anode, which comprises a battery 3, a potential acquisition instrument 4, a reference electrode 5 and a sacrificial anode bag 6. The specific connection relation is as follows: the battery 3 is connected with the potential acquisition instrument 4, and the battery 3 is used for supplying power to the potential acquisition instrument 4; the potential acquisition instrument 4 is connected with the pipeline 7 (namely the pipeline 7 needing to be protected) through a cable, the potential acquisition instrument 4 can adopt the existing cathode protection intelligent potential acquisition instrument 4, and the potential acquisition instrument 4 is used for acquiring and uploading pipeline potential, special-shaped sacrificial anode output current and pipeline alternating current interference voltage. Because the heat supply, water supply and drainage, electric power, communication and the like of the cells are densely distributed, the short-distance protection mode can only be adopted in consideration of the fact that interference cannot be generated to other facilities. In order to adapt to the working condition of a cell, the reference electrode 5 and the sacrificial anode bag 6 are buried near the pipeline 7, the reference electrode 5 is connected with the pipeline 7 through the potential acquisition instrument 4, the sacrificial anode bag 6 comprises a cloth bag 62, a packing material 61 and a special-shaped sacrificial anode, the packing material 61 and the special-shaped sacrificial anode are arranged in the cloth bag 62, and the connecting part 22 of the special-shaped sacrificial anode core 2 is connected with the pipeline 7 through the potential acquisition instrument 4, so that a special-shaped sacrificial anode system for a short-distance small-diameter steel pipeline under the working condition of the cell is formed, and the cathodic protection of the pipeline 7 is realized.
When the cathode protection system is in actual use, the pipeline potential, the special-shaped sacrificial anode output current and the pipeline alternating current interference voltage of the cathode protection system can be detected in real time, and the detected data are remotely transmitted. The working load of first-line operation and maintenance personnel is reduced, the working efficiency is improved, faults can be found in time and maintained through the electric potential and the output current of the sacrificial anode, and the operation safety and the management level of a cell pipe network are improved.
In this embodiment, the filler 61 is composed of gypsum powder, bentonite and sodium sulfate, and the mass percentage of the filler is 75:20:5. and the special-shaped sacrificial anode is positioned at the center of the filler 61 in the cloth bag 62, so that the special-shaped sacrificial anode is in the final working state. The battery 3 and the potential detection device 4 can be arranged in the cathodic protection well 8 in order to protect the potential detection device 4. Well lid 9 is equipped with in the well head department of cathodic protection well 8, in order to guarantee the transmission of teletransmission signal, well lid 9 can adopt the nonmetal well lid that is suitable for in the community.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to the terms "present embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model, but any modifications, equivalents, and simple improvements made within the spirit of the present utility model should be included in the scope of the present utility model.
Claims (7)
1. A shaped sacrificial anode, characterized by: including positive pole body and positive pole core, the positive pole body is annular structure, positive pole core includes embedded portion and connecting portion, embedded portion of positive pole core is embedded in the inside of positive pole body and positive pole body casting as an organic wholely, the one end and the embedded portion fixed connection of connecting portion, the other end of connecting portion wears out from this internally of positive pole.
2. A shaped sacrificial anode according to claim 1, wherein: the embedded part and the connecting part of the anode core are integrally formed through casting.
3. A shaped sacrificial anode according to claim 2, wherein: the anode body is annular.
4. A shaped sacrificial anode according to claim 3, wherein: the anode body is made of magnesium alloy or zinc alloy.
5. A cathodic protection system employing a shaped sacrificial anode according to claim 4, characterized in that: the cathode protection system comprises a battery, a potential acquisition instrument, a reference electrode and a sacrificial anode bag, wherein the battery is connected with the potential acquisition instrument, the potential acquisition instrument is connected with a pipeline through a cable, the reference electrode and the sacrificial anode bag are buried near the pipeline, the reference electrode is connected with the pipeline through the potential acquisition instrument, the sacrificial anode bag comprises a cloth bag, a packing material and a special-shaped sacrificial anode, the packing material and the special-shaped sacrificial anode are arranged in the cloth bag, the connecting part of the special-shaped sacrificial anode core is connected with the pipeline through the potential acquisition instrument, and the potential acquisition instrument is used for acquiring and uploading the pipeline potential, the special-shaped sacrificial anode output current and the pipeline alternating current interference voltage.
6. The cathodic protection system of claim 5 wherein: the special-shaped sacrificial anode is positioned in the center of the filler in the cloth bag.
7. The cathodic protection system of claim 6 wherein: the battery and the potential acquisition instrument are arranged in the cathode protection well, and a well cover is arranged at the well mouth of the cathode protection well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320465932.8U CN220099184U (en) | 2023-03-13 | 2023-03-13 | Special-shaped sacrificial anode and cathode protection system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320465932.8U CN220099184U (en) | 2023-03-13 | 2023-03-13 | Special-shaped sacrificial anode and cathode protection system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN220099184U true CN220099184U (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320465932.8U Active CN220099184U (en) | 2023-03-13 | 2023-03-13 | Special-shaped sacrificial anode and cathode protection system thereof |
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| Country | Link |
|---|---|
| CN (1) | CN220099184U (en) |
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- 2023-03-13 CN CN202320465932.8U patent/CN220099184U/en active Active
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