CN213086116U - Sacrificial anode device of pipeline - Google Patents
Sacrificial anode device of pipeline Download PDFInfo
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- CN213086116U CN213086116U CN202021242996.4U CN202021242996U CN213086116U CN 213086116 U CN213086116 U CN 213086116U CN 202021242996 U CN202021242996 U CN 202021242996U CN 213086116 U CN213086116 U CN 213086116U
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- sacrificial
- sacrificial anode
- anode device
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- 230000000694 effects Effects 0.000 claims abstract description 24
- 238000004210 cathodic protection Methods 0.000 claims abstract description 17
- 239000007769 metal material Substances 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 description 17
- 239000010410 layer Substances 0.000 description 15
- 230000007797 corrosion Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000000576 coating method Methods 0.000 description 10
- 238000009413 insulation Methods 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical class [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 229910000365 copper sulfate Inorganic materials 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
- 229960001763 zinc sulfate Drugs 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000392928 Parachromis friedrichsthalii Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010288 cold spraying Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model provides a sacrificial anode device of pipeline, include: the pipeline fixing structure comprises a fixing structure and a sacrificial structure, wherein the fixing structure is arranged on a pipeline and comprises a first fixing piece and a second fixing piece; the sacrificial structure is made of a metal material with activity stronger than that of the pipeline, the sacrificial structure is clamped between the first fixing piece and the second fixing piece, and the sacrificial structure is electrically connected with the pipeline. Use the technical scheme of the utility model can solve the not good and installation of cathodic protection device anticorrosive effect among the prior art and maintain inconvenient problem effectively.
Description
Technical Field
The utility model relates to a pipeline protection field particularly, relates to a sacrificial anode device of pipeline.
Background
In the prior art, regarding corrosion prevention measures for buried heat-insulating pipelines, the most effective is to change the protection mode of a cathode, and the common method is as follows: (1) the impressed current cathodic protection is realized by using the solid electrolyte, but the method has complex construction and maintenance procedures, high cost and poor applicability on long-distance pipelines, and is only suitable for corrosion protection of small-distance pipe sections (such as pipeline protection in a pipeline sleeve); (2) spraying a sacrificial anode coating: at present, for buried high-temperature conveying pipelines, the economic sacrificial anode coatings mainly used are thermal spraying aluminum coating (TSA) and cold spraying aluminum Coating (CSA), but the coating quality is difficult to control, the service life is short, the price is high, and when the sacrificial anode coating is combined with an organic coating, H can be separated out due to local part below the coating2The bubbling and cracking of the organic coating are easily caused; (3) the band anode sacrificial anode is directly wound on the pipeline in the heat insulation layer, the method can carry out cathode protection on the heat insulation pipeline after water enters, but the engineering quantity in the process of installation and maintenance is too large. Therefore, a protection device which has the advantages of simple structure, convenient installation and maintenance, obvious anticorrosion effect, low cost and easy popularization and use is also lacked for the corrosion prevention and the treatment of the buried heat-insulating pipeline.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a sacrificial anode device of pipeline to solve the not good and inconvenient problem of installation and maintenance of cathodic protection device anticorrosive effect among the prior art.
In order to achieve the above object, the present invention provides a sacrificial anode device for a pipeline, comprising: the fixing structure is arranged on the pipeline and comprises a first fixing piece and a second fixing piece; the sacrificial structure is made of a metal material with activity stronger than that of the pipeline, the sacrificial structure is clamped between the first fixing piece and the second fixing piece, and the sacrificial structure is electrically connected with the pipeline.
Further, the sacrificial anode device further comprises: the driving structure drives the second fixing piece to move towards the first fixing piece.
Further, the driving structure comprises a bolt and a spring, the bolt penetrates through the first fixing piece and the second fixing piece, one end of the spring is connected with the bolt, and the other end of the spring is connected with the second fixing piece.
Furthermore, a plurality of positioning bolts penetrate through the fixing structure and are abutted against the pipeline to position the fixing structure.
Furthermore, the fixed structure is made of metal materials, the activity of the sacrificial structure is stronger than that of the fixed structure, a conductive screw penetrates through the fixed structure, and the sacrificial structure is electrically connected with the pipeline through the fixed structure and the conductive screw.
Further, the sacrificial structure comprises a first tile and a second tile, the first tile and the second tile are arranged oppositely to form an annular tile, and the annular tile is sleeved on the outer side of the pipeline.
Further, the fixing structure is provided with a support structure, and the support structure supports the inner surface of the annular tile.
Further, the first fixing piece comprises a first clamping piece and a second clamping piece which are connected with each other, the first clamping piece and the second clamping piece are connected to form a first annular hoop sleeved outside the pipeline, and/or the second fixing piece comprises a third clamping piece and a fourth clamping piece which are connected with each other, and the third clamping piece and the fourth clamping piece are connected to form a second annular hoop sleeved outside the pipeline.
Further, first mounting is including being first butt board and the first locating plate of angle setting, first butt board and the ascending one end butt of sacrificial structure in the axial direction of pipeline, and first mounting is located the pipeline through first locating plate, and the second mounting is including second butt board and the second locating plate that is the angle setting, and second butt board and the other end butt of sacrificial structure in the axial direction of pipeline, the second mounting is located the pipeline through the second locating plate.
Further, the sacrificial anode device further comprises: and the reference electrode is arranged on the fixed structure to detect the cathodic protection potential of the pipeline.
Use the technical scheme of the utility model, during the installation, will sacrifice the structure and press from both sides tight after-fixing on the pipeline through first mounting and second mounting, simple structure, simple to operate. Because the sacrificial structure is made of a metal material with the activity stronger than that of the pipeline, the sacrificial structure is electrically connected with the pipeline, the sacrificial structure is equivalent to an anode, the pipeline is equivalent to a cathode, and when the pipeline and the sacrificial structure are in a corrosive environment, the sacrificial structure is corroded in preference to the pipeline, so that the effect of protecting the pipeline can be achieved.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
figure 1 shows a front view of an embodiment of a sacrificial anode device according to the invention in cooperation with a pipe;
FIG. 2 shows a side view of the sacrificial anode arrangement of FIG. 1;
FIG. 3 shows a cross-sectional view of a sacrificial structure of the sacrificial anode arrangement of FIG. 1;
FIG. 4 shows a front view of a first fixture of the sacrificial anode arrangement of FIG. 1;
FIG. 5 shows a side view of the first attachment member of FIG. 4;
FIG. 6 shows a front view of a second fixture of the sacrificial anode arrangement of FIG. 1;
FIG. 7 shows a side view of the second mount of FIG. 6;
FIG. 8 shows test data for a galvanic cathodic protection screening effect test (70 ℃) when the sacrificial anode device of FIG. 1 is disposed outside a pipe;
FIG. 9 shows test data for a cathodic protection effectiveness test (a saturated copper sulfate reference electrode test built into the corrosion protection insulation layer) for the sacrificial anode device of FIG. 1; and
fig. 10 shows test data of the cathodic protection effect test (the test of the high purity zinc reference electrode built in the corrosion protection insulation layer) of the sacrificial anode device of fig. 1.
Wherein the figures include the following reference numerals:
10. a fixed structure; 1. a pipeline; 11. a first fixing member; 111. a first clip member; 112. a second clip member; 113. a first butt joint plate; 114. a first positioning plate; 12. a second fixing member; 121. a third fastener; 122. a fourth card member; 123. a second butt joint plate; 124. a second positioning plate; 20. a sacrificial structure; 21. a first tile; 22. a second tile; 30. a drive structure; 31. a bolt; 32. a spring; 40. positioning the bolt; 50. a conductive screw; 60. a support structure; 70. a reference electrode.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 and 2, the sacrificial anode device for a pipeline of the present embodiment includes: a fixed structure 10 and a sacrificial structure 20, wherein the fixed structure 10 is disposed on the pipeline 1, and the fixed structure 10 includes a first fixing member 11 and a second fixing member 12; the sacrificial structure 20 is made of a metal material with higher activity than that of the pipeline 1, the sacrificial structure 20 is clamped between the first fixing member 11 and the second fixing member 12, and the sacrificial structure 20 is electrically connected with the pipeline 1.
By applying the technical scheme of the embodiment, during installation, the sacrificial structure 20 is clamped and fixed on the pipeline 1 through the first fixing part 11 and the second fixing part 12, and the structure is simple and the installation is convenient. Because the sacrificial structure 20 is made of a metal material with higher activity than that of the pipeline 1, the sacrificial structure 20 is electrically connected with the pipeline 1, the sacrificial structure 20 is equivalent to an anode, the pipeline 1 is equivalent to a cathode, and when the pipeline 1 and the sacrificial structure 20 are in a corrosive environment, the sacrificial structure 20 is corroded in preference to the pipeline 1, so that the pipeline 1 can be protected.
Since the volume of the sacrificial structure 20 will gradually decrease in the process of being corroded, if the fixed structure 10 is not adjusted in time, the sacrificial structure 20 will fall off from the fixed structure 10, which affects the protection effect of the pipeline 1. To solve the above problem, in the present embodiment, as shown in fig. 2, the sacrificial anode device further includes: and the driving structure 30, wherein the driving structure 30 drives the second fixing member 12 to move towards the first fixing member 11. The above structure can make the sacrificial structure 20 be clamped between the first fixing member 11 and the second fixing member 12 all the time by providing the driving structure 30, so that the sacrificial structure 20 can be stably fixed on the pipeline 1, thereby improving the protection effect of the pipeline 1.
Specifically, as shown in fig. 3, in the present embodiment, the driving structure 30 includes a bolt 31 and a spring 32, the bolt 31 is disposed on the first fixing element 11 and the second fixing element 12, one end of the spring 32 is connected to the bolt 31, and the other end of the spring 32 is connected to the second fixing element 12. In the above structure, when the sacrificial structure 20 is reduced in volume, the spring 32 exerts a pulling force on the second fixing member 12, so that the second fixing member 12 moves toward the first fixing member 11 to clamp the sacrificial structure 20. The above structure ensures that the sacrificial structure 20 does not fall off between the first fixing member 11 and the second fixing member 12, thereby ensuring that it can sufficiently exert the function of cathodic protection over the life span.
As shown in fig. 1 and 2, in the present embodiment, a plurality of positioning bolts 40 are inserted into the fixing structure 10, and the positioning bolts 40 abut against the pipe 1 to position the fixing structure 10. It should be noted that, a plurality of positioning screw holes are respectively formed on the first fixing member 11 and the second fixing member 12, and the positioning bolt 40 passes through the bolt hole until one end abuts against the outer surface of the pipe 1. In the above configuration, the fixing structure 10 can be fixed to the pipe 1 by tightening the positioning bolt 40, and the concentricity of the fixing structure 10 and the pipe 1 can be adjusted by adjusting the positioning bolt 40.
As shown in fig. 1 and fig. 2, in the present embodiment, the fixing structure 10 is made of a metal material, the activity of the sacrificial structure 20 is stronger than that of the fixing structure 10, a conductive screw 50 penetrates through the fixing structure 10, and the sacrificial structure 20 is electrically connected to the pipeline 1 through the fixing structure 10 and the conductive screw 50. In the above structure, the conductive screw 50 abuts on the pipe 1, so that a conductive path is formed between the sacrificial structure 20, the fixing structure 10 and the conductive screw 50, and the sacrificial structure 20 plays a role of protecting the pipe. In addition, the sacrificial structure 20 having higher activity than the fixed structure 10 can cause the sacrificial structure 20 to be corroded in preference to the fixed structure 10, so that the fixed structure 10 is protected, thereby ensuring that the sacrificial structure 20 can be stably fixed on the pipeline 1. It should be noted that the positioning bolt 40 also functions to form a conductive path by abutting against the pipe 1, but since the abutting surface of the positioning bolt 40 against the pipe 1 is more likely to be corroded due to a larger abutting area, and the conductive path is blocked, stability of the conductive path can be ensured by additionally providing the conductive screw 50.
As shown in fig. 1 and 3, in the present embodiment, the sacrificial structure 20 includes a first tile 21 and a second tile 22, the first tile 21 and the second tile 22 are disposed opposite to each other to form an annular tile, and the annular tile is sleeved outside the pipeline 1. The sacrificial structures 20 are arranged into a plurality of tiles, so that the sacrificial structures can be conveniently installed, and the workload of installing or replacing the sacrificial structures 20 is reduced. Preferably, the thickness of the first tile 21 and the second tile 22 is 7-10 mm; the first tile 21 and the second tile 22 are made of aluminum alloy having a natural potential of-1.29V at 80 ℃.
As shown in fig. 1 and 2, in the present embodiment, the fixing structure 10 is provided with a support structure 60, and the support structure 60 supports the inner surface of the annular tile. It should be noted that one end of the supporting structure 60 is fixed on the inner wall of the fixed structure 10, and the other end is fixed on the inner wall of the sacrificial structure 20. The support structure 60 enables a certain clearance to be maintained between the sacrificial structure 20 and the pipe 1, facilitating installation.
As shown in fig. 2, 4 and 6, in the present embodiment, the first fixing member 11 includes a first clamping member 111 and a second clamping member 112 connected to each other, the first clamping member 111 and the second clamping member 112 are connected to form a first annular clamp sleeved outside the pipeline 1, the second fixing member 12 includes a third clamping member 121 and a fourth clamping member 122 connected to each other, and the third clamping member 121 and the fourth clamping member 122 are connected to form a second annular clamp sleeved outside the pipeline 1. It should be noted that, an assembling and positioning structure is provided between the first clip member 111 and the second clip member 112 to connect the first clip member 111 and the second clip member 112 into a first annular clip. Accordingly, a fitting positioning structure is also provided between the third clip piece 121 and the fourth clip piece 122. In the above structure, the first fixing member 11 and the second fixing member 12 are both formed by two semicircular clamping pieces, so that the first fixing member 11 and the second fixing member 12 can be conveniently clamped on the pipeline 1. The structure is simple, and the installation is convenient.
As shown in fig. 2, 5 and 7, in the present embodiment, the first fixing element 11 includes a first abutting plate 113 and a first positioning plate 114, which are angularly disposed, the first abutting plate 113 abuts against one end of the sacrificial structure 20 in the axial direction of the pipeline 1, the first fixing element 11 is positioned on the pipeline 1 through the first positioning plate 114, the second fixing element 12 includes a second abutting plate 123 and a second positioning plate 124, which are angularly disposed, the second abutting plate 123 abuts against the other end of the sacrificial structure 20 in the axial direction of the pipeline 1, and the second fixing element 12 is positioned on the pipeline 1 through the second positioning plate 124. In the above structure, the sacrificial structure 20 is sandwiched between the first abutting plate 113 and the second abutting plate 123, and the driving structure 30 is disposed on the first abutting plate 113 and the second abutting plate 123, so that the sacrificial structure 20 can be reliably sandwiched between the first abutting plate 113 and the second abutting plate 123. The positioning bolt 40, the conductive screw 50 and the supporting structure 60 are disposed on the first positioning plate 114 and the second positioning plate 124. The above-described construction enables the first fixing member 11 and the second fixing member 12 to be reliably attached to the pipeline 1, thereby ensuring that the sacrificial structure 20 is always in its working position.
As shown in fig. 1, in the present embodiment, the sacrificial anode device further includes: and a reference electrode 70 disposed on the fixed structure 10 to detect a cathodic protection potential of the pipe 1. Reference electrode 70 is a high purity zinc and copper sulfate reference electrode. Since the copper sulfate electrode cannot be used for a long time under the condition that the temperature in the heat preservation layer is high and the copper sulfate electrode is dry, a high-purity zinc electrode is selected as a long-acting electrode. The structure can quickly monitor the cathodic protection potential of the pipeline in real time through the high-purity zinc and copper sulfate reference electrodes arranged on the fixed structure 10.
The anti-corrosion heat-insulation layer of the buried pipeline is generally a composite structure consisting of an anti-corrosion layer, a foam heat-insulation layer and a protective layer (generally a polyethylene yellow jacket layer), and has a good anti-corrosion heat-insulation effect theoretically. However, in the process of pipeline construction and operation, the foam heat-insulating layer material is low in strength and is easy to damage in the processes of transportation, construction and use. In addition, can produce the difference in temperature between anticorrosive heat preservation and the pipeline, the difference in temperature can produce the comdenstion water between anticorrosive heat preservation and the pipeline, uses the comdenstion water can corrode the pipeline for a long time. Secondly, the anti-corrosion heat-insulation layer can age and peel off in the long-term use process, so that the anti-corrosion heat-insulation layer can be in a water inlet state or a wet state, and a pipeline can be corroded. The corrosion-resistant heat-insulating layer has a strong shielding effect on the impressed cathodic protection current of the buried pipeline, so that a very severe corrosion environment is formed under the heat-insulating layer, and the corrosion leakage accidents of the buried heat-insulating pipeline are frequent. Taking a certain oil field in China as an example, since 2006, the buried heat-insulating pipeline which only accounts for 8.27% of the total mileage of the crude oil pipeline is perforated for 89 times, the occupation ratio is as high as 60.5%, the corrosion condition is particularly prominent, and the serious threat is brought to the safety production and the environmental protection of the oil field. Therefore, in view of the serious corrosion condition of the buried heat-insulating pipeline, the method adopts a targeted prevention and treatment measure, and has important significance for prolonging the service life of the buried heat-insulating pipeline and ensuring the safe operation of the pipeline.
Since the corrosion protection coating or the insulating layer can cover the generated corrosion, obvious corrosion damage can not be found before serious accidents happen to the buried insulating pipeline, and serious casualties and great economic loss can be caused. Compared with the prior art, the utility model discloses a tile type sacrificial structure device for a buried heat-insulating pipeline, a first fixing piece 11 and a second fixing piece 12 are assembled and combined into a bracelet type, and the bracelet type sacrificial structure device can be arranged at a joint position in a heat-insulating layer in the process of construction or maintenance of the buried heat-insulating pipeline; the sacrificial structure 20 can polarize the potential of the pipeline to-1.0V under the high temperature condition of more than 70 DEG CCSEAnd the polarization potential difference value is more than 100mV, so that the shielding effect of the buried pipeline corrosion-resistant heat-insulation composite structure on the externally-applied cathodic protection current is effectively avoided, the protection potential is stable, and the cathodic protection effect is obvious.
The utility model has the characteristics of simple structure, simple to operate, effect are showing, low cost, can directly be applied to the improvement of the antiseptic measure who buries the ground heat preservation pipeline in labour and newly-built bury ground heat preservation pipeline's anticorrosive design. Therefore, the utility model discloses to the extension bury ground insulating pipeline's the labour age, the safe operation of guarantee pipeline, improve the comprehensive development benefit in oil field to and reduce the oil gas pipeline and corrode and reveal the pollution to the environment and have important propulsive effect.
In addition, compared with impressed current cathodic protection, the tile type sacrificial structure device for the buried heat-insulating pipeline is adopted, the shielding of an anticorrosive heat-insulating composite structure on the impressed cathodic protection current can be avoided, the protection potential is stable, the cathodic protection effect is obvious, and field test data are shown in figures 8 to 10.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sacrificial anode device for a pipeline, comprising:
the fixing structure (10) is arranged on the pipeline (1), and the fixing structure (10) comprises a first fixing piece (11) and a second fixing piece (12);
the pipeline structure comprises a sacrificial structure (20), wherein the sacrificial structure (20) is made of a metal material with activity stronger than that of the pipeline (1), the sacrificial structure (20) is clamped between the first fixing piece (11) and the second fixing piece (12), and the sacrificial structure (20) is electrically connected with the pipeline (1).
2. The sacrificial anode device of claim 1, further comprising:
and the driving structure (30) drives the second fixing piece (12) to move towards the first fixing piece (11).
3. The sacrificial anode device of claim 2, wherein the driving structure (30) comprises a bolt (31) and a spring (32), the bolt (31) is arranged on the first fixing member (11) and the second fixing member (12) in a penetrating way, one end of the spring (32) is connected with the bolt (31), and the other end of the spring (32) is connected with the second fixing member (12).
4. The sacrificial anode device of claim 1, wherein a plurality of positioning bolts (40) are threaded through the fixing structure (10), the positioning bolts (40) abutting the pipe (1) to position the fixing structure (10).
5. The sacrificial anode device according to claim 1, wherein the fixing structure (10) is made of a metal material, the sacrificial structure (20) has higher activity than the fixing structure (10), a conductive screw (50) is arranged on the fixing structure (10) in a penetrating manner, and the sacrificial structure (20) is electrically connected with the pipeline (1) through the fixing structure (10) and the conductive screw (50).
6. The sacrificial anode device of claim 1, characterized in that the sacrificial structure (20) comprises a first tile (21) and a second tile (22), the first tile (21) and the second tile (22) being arranged opposite to form an annular tile, which is nested outside the pipe (1).
7. The sacrificial anode arrangement of claim 6, wherein a support structure (60) is provided on the fixation structure (10), the support structure (60) supporting the inner surface of the annular tile.
8. The sacrificial anode device of claim 1, wherein the first fixing member (11) comprises a first clamping member (111) and a second clamping member (112) connected with each other, the first clamping member (111) and the second clamping member (112) being connected to form a first annular clamp sleeved outside the pipeline (1), and/or the second fixing member (12) comprises a third clamping member (121) and a fourth clamping member (122) connected with each other, the third clamping member (121) and the fourth clamping member (122) being connected to form a second annular clamp sleeved outside the pipeline (1).
9. The sacrificial anode device of claim 1, wherein the first fixing member (11) comprises a first abutting plate (113) and a first positioning plate (114) which are arranged at an angle, the first abutting plate (113) abuts one end of the sacrificial structure (20) in the axial direction of the pipe (1), the first fixing member (11) is positioned on the pipe (1) through the first positioning plate (114), the second fixing member (12) comprises a second abutting plate (123) and a second positioning plate (124) which are arranged at an angle, the second abutting plate (123) abuts the other end of the sacrificial structure (20) in the axial direction of the pipe (1), and the second fixing member (12) is positioned on the pipe (1) through the second positioning plate (124).
10. The sacrificial anode device of claim 1, further comprising:
a reference electrode (70) arranged on said fixed structure (10) to detect the cathodic protection potential of said duct (1).
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|---|---|---|---|
| CN202021242996.4U CN213086116U (en) | 2020-06-30 | 2020-06-30 | Sacrificial anode device of pipeline |
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| CN202021242996.4U CN213086116U (en) | 2020-06-30 | 2020-06-30 | Sacrificial anode device of pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115949835A (en) * | 2022-11-14 | 2023-04-11 | 厦门市特种设备检验检测院 | Tunnel water supply pipeline with good corrosion prevention effect and preparation method thereof |
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2020
- 2020-06-30 CN CN202021242996.4U patent/CN213086116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115949835A (en) * | 2022-11-14 | 2023-04-11 | 厦门市特种设备检验检测院 | Tunnel water supply pipeline with good corrosion prevention effect and preparation method thereof |
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| GR01 | Patent grant |