CN101696505A - Sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion - Google Patents
Sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion Download PDFInfo
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- CN101696505A CN101696505A CN200910188234A CN200910188234A CN101696505A CN 101696505 A CN101696505 A CN 101696505A CN 200910188234 A CN200910188234 A CN 200910188234A CN 200910188234 A CN200910188234 A CN 200910188234A CN 101696505 A CN101696505 A CN 101696505A
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- large caliber
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- 238000005260 corrosion Methods 0.000 title claims abstract description 27
- 230000007797 corrosion Effects 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 37
- 238000009412 basement excavation Methods 0.000 claims abstract description 4
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 20
- 239000004035 construction material Substances 0.000 claims description 11
- 235000011837 pasties Nutrition 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 50
- 239000011248 coating agent Substances 0.000 description 38
- 238000000034 method Methods 0.000 description 20
- 239000004593 Epoxy Substances 0.000 description 11
- 238000009434 installation Methods 0.000 description 10
- 238000003723 Smelting Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000037396 body weight Effects 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 235000019786 weight gain Nutrition 0.000 description 3
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 238000012360 testing method Methods 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 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- PANBYUAFMMOFOV-UHFFFAOYSA-N sodium;sulfuric acid Chemical compound [Na].OS(O)(=O)=O PANBYUAFMMOFOV-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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Abstract
The invention relates to a sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion, which is applied to a pipeline (1) of open type excavation construction or pipe jacking construction. The sacrificial anode protection device is characterized in that the sacrificial anode protection device (3) particularly consists of the following two parts: a supporting and connecting part (301) and a sacrificial anode part (302), wherein the sacrificial anode part (302) is directly or indirectly fixedly connected to the pipeline (1) through the supporting and connecting part (301). The sacrificial anode protection device can ensure the sustainability of the pipeline jacking construction, greatly saves the assembly workload and the assembly cost, can achieve long-term protection through one-time construction, and meets the requirements of durability of large-scale engineering construction. The sacrificial anode protection device has foreseeable enormous economic value and social value in engineering application.
Description
Technical field
The present invention relates to metallic conduit anti-corrosion protection technology, a kind of sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion is provided especially.
Background technology
Traditional large diameter pipeline process for corrosion control has following two big classes:
Isolating metal pipeline and corrosive environment for example have the coating of corrosion-resisting function at the outside coating of metallic conduit; Adopt the method for electrochemical anti-corrosive to carry out anti-corrosive treatment, sacrificial anode device for example is installed.
Therefore, people urgently wish to obtain a kind of technique effect better at large diameter pipeline (the especially pipeline of jacking construction) the outer wall corrosion control sacrificial anode protection device of metal quality.
Summary of the invention
The purpose of this invention is to provide a kind of technique effect from the highest sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of the analytical price ratio of protection effect.
The present invention specifically provides a kind of sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion, and it is applied to the pipeline 1 of open excavation construction or jacking construction; It is characterized in that:
Described sacrificial anode protection device 3 specifically is made of following two parts: support and connection portion 301, sacrificial anode portion 302; Wherein, sacrificial anode portion 302 by support and connection portion 301 directly or indirect securement be connected on the pipeline 1.
The present invention also comprises following preferred content:
Constitute electric connection structure between sacrificial anode portion 302 in the described sacrificial anode protection device 3 and the pipeline 1.
In the described sacrificial anode protection device 3, support and connection portion 301 is specially the support rod iron with electrical connection ability; Supporting rod iron fixes and is sealed on the pipeline 1.
The described that part of support rod iron outer setting that is not wrapped by sacrificial anode portion 302 has insulation covering 4.Sacrificial anode protection device 3 integral body can form the basic acicular structure that is.
In described sacrificial anode protection device 3 outsides, be provided with the pasty state sacrificial anode that is used to wrap up sacrificial anode protection device 3 usefulness and add construction materials contract.
The present invention uses plug 6 to be fixed on as the support rod iron of support and connection portion 301 on the pipeline 1; Simultaneously, plug 6 is also kept apart the sealing of pipeline 1 interior or exterior space respectively.
Sacrificial anode protection device 3 of the present invention also satisfies one of following requirement or its combination:
Between plug 6 and the pipeline 1 for being threaded.
Of the present invention in pipeline construction and installation sacrificial anode protection device 3 be meant the grouting hole that utilizes on original tube wall or on pipeline, punch, in pipeline, sacrificial anode protection device 3 is installed outside pipeline; This mode must have good technical effect in practical engineering application;
In the actual application, after installation sacrificial anode protection device 3 finished, we used the pasty state sacrificial anode to add construction materials contract sacrificial anode protection device 3 are wrapped up; The mass percent that described pasty state sacrificial anode adds construction materials contract consists of terra alba: industrial sulphuric acid sodium: wilkinite=75: 5: 20.
The present invention requires contact resistance between plug 6 and the pipeline 1 less than 0.001 ohm in actual applications.Concrete operations are described as follows: add after the construction materials contract envelope wraps up at the outside pasty state sacrificial anodes that use of sacrificial anode protection device 3; The contact resistance that we use milliohmmeter to measure between plug and the steel pipe main body should be less than 0.001 ohm of standard value.
Carrying out protection potential afterwards again measures: the grouting hole at the experiment steel pipe the other end is installed the copper sulfate reference electrode, adopts the multitester measuring protection potential of four and half readings, reaches initial stage protection potential requirement; The initial stage protection potential requires less than-850 millivolts/CSE, and the CSE here represents " copper sulfate reference electrode ".So, can obtain better technique effect.
Technical background of the present invention is according to a kind of pipeline outer wall process for corrosion control of large diameter pipeline jacking construction, and this method is carried out the buried pipeline construction according to existing domestic and international standard code; It is characterized in that:
Adopt the associating protection against corrosion scheme of pipeline outer wall coating protection+galvanic anode protection to carry out corrosive pipeline control;
---adopt GB/T 18593-2001, SY/T 0315-2005 standard to test, the crucial barrier propterty of described pipeline outer wall coating requires to reach following index:
The anti-water permeate of coating: in distilled water, soaked coating rate of body weight gain≤3% 30 days under 60 ℃ of conditions;
Adhesive force of coatings: under 95 ℃ of conditions, soaked 30 days, adhesive force of coatings reaches 1 grade;
Cohesive strength 〉=the 70Mpa of coating;
The cathodic disbonding of coating requires: under-1.5V, 65 ℃ of conditions, and 2 days, overburden amount≤3.5mm;
Section porosity: 1～2 grade;
Interface porosity: 1～2 grade; (above-mentioned these indexs can become the practical project standard.)
---described galvanic protection is a construction and installation sacrificial anode protection device 3 in pipeline, to managing the mode that outer wall is protected.
It is emphasized that above-mentioned adhesive force of coatings and section porosity, the following standard of interface porosity reference: GB/T 18593-2001, SY/T 0315-2005; What the pipeline outer wall coating was specifically used is smelting combined epoxy high performance and long service life pipeline coatings (the serial coating in the SEBF1 that Metal Inst., Chinese Academy of Sciences produces～7 is the commercially available prod);
Coating protection involved in the present invention is the actual main means of pipeline protection; in design service life; smelting combined epoxy high performance and long service life pipeline coatings (the serial coating in the SEBF1 that Metal Inst., Chinese Academy of Sciences produces～7 of main tube pipeline outer wall; the commercially available prod) does the life-cycle galvanic protection as main preventive means, the coating light pipe is carried out galvanic protection owing to coating damage place that reasons such as machinery collides with, friction cause to pipeline outer wall in production, transportation and installation process even the coating coated steel pipe is protected as supplementary means.
This method is to design the foundation of pipeline protection at present.For the pipeline protection of heavy caliber pipe-jacking construction, adopt mentioned above principle to protect certain degree of difficulty:
1) in the process of coated pipeline jacking construction, can guarantee the continuity of piping installation, require to provide a kind of high-performance and can quick-setting cloth opening-supplementing material, this in present product also not as seen;
2) behind the coated pipeline jacking construction; do not have good method to implement galvanic protection, with the impressed current method that has in the location of jacking construction pipeline complexity since with the electric current mutual interference mutually of outer engineering; be difficult to realize reliable galvanic protection, if will implement also will expend huge financial resources.The construction enforcement protection outside pipe usually of another kind of sacrificial anode protection.
In described large diameter pipeline jacking construction process, require one section with each segment pipe 1 end to clean out supercoat, will weld fixing then between each section pipe and sealing, the repaired mouth operation after also requiring to weld after again;
The requirement that described pipeline outer wall weld is carried out repaired mouth operation is specifically: at first not seal coat position and near residue (residue after the welding, corrosion material etc.) thereof after the cleaning welding; afterwards the weld of pipeline outside and near apply supercoat again, make that each section pipe is common to form the integral body that an outer setting has continuous protective coating.
Continuity for the smelting combined epoxy high performance and long service life pipeline coatings that guarantees to be applied to the metallic conduit outer wall, the weld of our junction between the pipeline that originally belongs to different segment uses and the repaired mouth coated material of the same type of pipeline outer wall coating carries out pipeline outer wall corrosion prevention processing, except the index request that requires cohesive strength 〉=25Mpa, other index request is consistent with the smelting combined epoxy high performance and long service life pipeline coatings of metallic conduit outer wall; What specifically select can be macromolecule solvent-free epoxy coat material SLF series.Specify as follows:
Adopt GB/T 18593-2001, SY/T 0315-2005 standard to test, the crucial barrier propterty index request of described pipeline outer wall repaired mouth coating reaches following index:
The anti-water permeate of coating: in distilled water, soaked coating rate of body weight gain≤3% 30 days under 60 ℃ of conditions;
Adhesive force of coatings: under 95 ℃ of conditions, soaked 30 days, adhesive force of coatings reaches 1 grade;
Cohesive strength 〉=the 25Mpa of coating;
The cathodic disbonding of coating requires: under-1.5V, 65 ℃ of conditions, and 2 days, overburden amount≤3.5mm;
Section porosity: 1～2 grade;
Interface porosity: 1～2 grade.
In the pipeline outer wall process for corrosion control of described large diameter pipeline jacking construction, sacrificial anode protection device 3 specifically is installed in pipeline 1 outside, and it is according to axis mounted in pairs on pipeline 1 outer wall of pipeline 1; Installing space is 15 meters～1 km.
The common installing space of sacrificial anode is 15 meters to the maximum in the prior art; But, in the present invention because use high performance protective coating, the installing space of sacrificial anode can reach 1 km in addition more than.
Welding and applying after the repaired mouth coating between with pipeline, the installation method of described sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion can carry out successively according to following requirement:
At first, utilize on the tube wall of pipeline 1 grouting hole or on pipeline punching in the hole, inject the pasty state sacrificial anode and add construction materials contract as open holes;
Then, sacrificial anode protection device 3 is installed outside pipeline in pipeline: the support rod iron that will be fixed with sacrificial anode portion 302 as the little head end that support and connection portion 301 uses is installed to inside by the open holes on the tube wall and is marked with the pasty state sacrificial anode and adds the cavity of construction materials contract, requires sacrificial anode portion 302 towards the end away from pipeline;
Again, use plug 6 will support rod iron and be fixed on the pipeline 1;
After keeping for some time again, promptly the satisfactory external packets of successful installation is wrapped with the interior sacrificial anode protection device of installing 3 of pipe that the pasty state sacrificial anode adds construction materials contract.
It is emphasized that: before the outside pasty state sacrificial anode of the pipeline of sacrificial anode protection device 3 being put into open holes on the corresponding pipeline from pipe interior added the construction materials contract cavity, the stub end of the support rod iron that uses with plug 6 with as support and connection portion 301 was fixed together by the mode that is threaded earlier;
After the outside pasty state sacrificial anode of the pipeline of sacrificial anode protection device 3 being put into open holes on the corresponding pipeline from pipe interior adds the construction materials contract cavity; utilize on the plug 6 helicitic texture with plug 6 be connected thereon and become as a whole support rod iron all to be fixed on the pipeline 1 with it, and sealing is arranged on the open holes on the tube wall.
The advantage of the present invention and related art scheme thereof:
1) sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of the present invention specifically can be applied in the pipeline outer wall process for corrosion control of large diameter pipeline jacking construction.Because pipeline outer wall has used high performance smelting combined epoxy long-life tube pipeline outer wall coating (the serial coating in the SEBF1 that Metal Inst., Chinese Academy of Sciences produces～7, commercially available prod), after the heavy caliber pipe-jacking construction, pipeline Bulk coat barrier propterty is good.The performance of (be less than under the home sacrificial anode consumption 1/10) its good coating protection can make and common reach more than 50 years with effective protection time limit of immersion pipeline with burying under the use of a small amount of sacrificial anode; Because the consumption of sacrificial anode in effective protection period is few, in the heavy caliber pipe-jacking pipeline, adopts new anode and new anode installation Technology, the cathode protecting process of implementing heavy caliber pipe-jacking construction sacrificial anode becomes possibility.The invention solves the technical barrier of jacking construction pipeline outer wall corrosion control in the prior art, filled up technological gap;
In the prior art, the volume resistance of pipeline outer wall coating is position 10 usually
10Ohm-meter; And the volume resistance of the coating in the technical program can reach 10
14Ohm-meter; Its technique effect obviously is better than prior art.
2) the technical program specifically preferably can use welding process that described sacrificial anode protection device 3 is fixed on the pipeline 1 by support and connection portion 301; For guaranteeing the persistence of pipeline jacking construction at the scene, require the weld construction of prevention work time very short (within an hour), opening-supplementing material can be done solid work, and cohesive strength is not damaged the repaired mouth coating performance near 10Mpa when guaranteeing jacking construction;
The present invention has used non-solvent epoxy repaired mouth coating, and the high-performance smelting combined epoxy long-life tube pipeline outer wall coating of fit tube pipeline outer wall makes the jacking construction pipeline obtain Global Macros jointly.
The barrier propterty index of the outside repaired mouth coated material of pipeline: 60 ℃ were soaked coating rate of body weight gain≤3% 30 days in distilled water; Adhesive force of coatings: soaked 30 days under 95 ℃ of conditions, reach 1 grade; Cohesive strength 〉=the 70Mpa of coating; 65 ℃ of the cathodic disbonding of coating :-1.5V, 2 days≤3.5mm; Section porosity: 1-2 level; Interface porosity: 1-2 level.
3) the present invention adopts the cathode protecting process of efficient sacrificial anode; It has also specifically used the acicular sacrificial anode protection device 3 (referring to accompanying drawing 1～3) of special construction design; The use of default coating of connecting pipe pipeline outer wall and weld repaired mouth coating, its required sacrificial anode quantity is less than 1/10 of conventional amount used.
Simultaneously; the installation site of the sacrificial anode protection device 3 of constructing in pipeline has made full use of grouting hole; original grouting hole can satisfy requirements such as when mounted quantity of sacrificial anode protection device 3, weight substantially; can be so that whole large diameter pipeline jacking construction pipeline outer wall corrosion control system reach optimum design, and to best effect should be arranged.So, related art scheme of the present invention has been saved installation workload and installation cost greatly.
4) the technical program can just can reach long lasting protection through once constructing, and satisfies the life requirement of heavy construction construction; It has foreseeable huge economic and social value.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and the embodiments:
Fig. 1 is the interior construction of the pipe cathodic protection system synoptic diagram that is provided with sacrificial anode protection device 3, and among the figure, we utilize is the grouting hole that is provided with in pairs on pipeline 1, and mounted in pairs is axisymmetric sacrificial anode protection device 3 substantially on grouting hole;
Fig. 2 is the A place partial enlarged drawing of Fig. 1;
Fig. 3 is sacrificial anode protection device 3 basic block diagram.
Embodiment
The implication of each number designation in the accompanying drawing of the present invention is as follows:
A kind of sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion, it is applied to the pipeline 1 of open excavation construction or jacking construction; It is characterized in that: described sacrificial anode protection device 3 specifically is made of following two parts: support and connection portion 301, sacrificial anode portion 302; Wherein, sacrificial anode portion 302 by support and connection portion 301 directly or indirect securement be connected on the pipeline 1.
Present embodiment also comprises following content:
Constitute electric connection structure between sacrificial anode portion 302 in the described sacrificial anode protection device 3 and the pipeline 1.
In the described sacrificial anode protection device 3, support and connection portion 301 is specially the support rod iron with electrical connection ability; Supporting rod iron fixes and is sealed on the pipeline 1.
The described that part of support rod iron outer setting that is not wrapped by sacrificial anode portion 302 has insulation covering 4.Sacrificial anode protection device 3 integral body can form the basic acicular structure that is.
In described sacrificial anode protection device 3 outsides, be provided with the pasty state sacrificial anode that is used to wrap up sacrificial anode protection device 3 usefulness and add construction materials contract.
Present embodiment uses plug 6 to be fixed on as the support rod iron of support and connection portion 301 on the pipeline 1; Simultaneously, plug 6 is also kept apart the sealing of pipeline 1 interior or exterior space respectively.
The described sacrificial anode protection device 3 of present embodiment also satisfies one of following requirement or its combination:
Between plug 6 and the pipeline 1 for being threaded.
Pipeline outer wall process for corrosion control about the large diameter pipeline jacking construction in the technical background in the present embodiment sees also specification sheets, is omitted at this.
Embodiment 2
The content of present embodiment and embodiment 1 is basic identical, and its difference mainly is: plug 6 and as between the support rod iron of support and connection portion 301 for the riveted joint or the welding; Be connected for welding or deck between plug 6 and the pipeline 1.
What the pipeline outer wall coating was specifically used is smelting combined epoxy high performance and long service life pipeline coatings (the serial coating in the SEBF1 that Metal Inst., Chinese Academy of Sciences produces～7 is the commercially available prod); The serial coating in SEBF1～7 is fit to different pipelines, can select for use as the case may be.
The coated material that the pipeline outer wall repaired mouth uses specifically can be:
The SEBF1 that Metal Inst., Chinese Academy of Sciences produces～7 serial smelting combined epoxy high performance and long service life pipeline coatings, or macromolecule solvent-free epoxy coat material SLF series.
Claims (7)
1. sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion is applied to the pipeline (1) of open excavation construction or jacking construction; It is characterized in that:
Described sacrificial anode protection device (3) specifically is made of following two parts: support and connection portion (301), sacrificial anode portion (302); Wherein, sacrificial anode portion (302) by support and connection portion (301) directly or indirect securement be connected on the pipeline (1).
2. according to the described sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of claim 1, it is characterized in that: constitute electric connection structure between sacrificial anode portion (302) in the described sacrificial anode protection device (3) and the pipeline (1).
3. according to the described sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of claim 2, it is characterized in that: in the described sacrificial anode protection device (3), support and connection portion (301) is specially the support rod iron with electrical connection ability; Supporting rod iron fixes and is sealed on the pipeline (1).
4. according to the described sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of claim 3, it is characterized in that: the described that part of support rod iron outer setting that is not wrapped by sacrificial anode portion (302) has insulation covering (4).
5. according to the described sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of claim 4; it is characterized in that:, be provided with the pasty state sacrificial anode that is used to wrap up sacrificial anode protection device (3) usefulness and add construction materials contract in described sacrificial anode protection device (3) outside.
6. according to one of them described sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of claim 1～5, it is characterized in that:
Use plug (6) to be fixed on as the support rod iron of support and connection portion (301) on the pipeline (1); Simultaneously, plug (6) is also kept apart the sealing of pipeline (1) interior or exterior space respectively.
7. according to the described sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion of claim 6, it is characterized in that: described sacrificial anode protection device (3) also satisfies one of following requirement or its combination:
Plug (6) with as between the support rod iron of support and connection portion (301) for being threaded;
Between plug (6) and the pipeline (1) for being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910188234A CN101696505A (en) | 2009-10-28 | 2009-10-28 | Sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910188234A CN101696505A (en) | 2009-10-28 | 2009-10-28 | Sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion |
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| Publication Number | Publication Date |
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| CN101696505A true CN101696505A (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910188234A Pending CN101696505A (en) | 2009-10-28 | 2009-10-28 | Sacrificial anode protection device for controlling large caliber pipeline outer wall corrosion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995027A (en) * | 2011-10-24 | 2013-03-27 | 中国科学院金属研究所 | Sacrificial anode for cathode protection of underground pipeline system |
| CN104214468A (en) * | 2014-07-31 | 2014-12-17 | 西安石油大学 | Device and method for preventing pipeline inner wall corrosion through adopting external sacrificial anode |
-
2009
- 2009-10-28 CN CN200910188234A patent/CN101696505A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995027A (en) * | 2011-10-24 | 2013-03-27 | 中国科学院金属研究所 | Sacrificial anode for cathode protection of underground pipeline system |
| CN102995027B (en) * | 2011-10-24 | 2015-06-10 | 中国科学院金属研究所 | Sacrificial anode for cathode protection of underground pipeline system |
| CN104214468A (en) * | 2014-07-31 | 2014-12-17 | 西安石油大学 | Device and method for preventing pipeline inner wall corrosion through adopting external sacrificial anode |
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Open date: 20100421 |