WO2022180731A1 - 防食システム - Google Patents
防食システム Download PDFInfo
- Publication number
- WO2022180731A1 WO2022180731A1 PCT/JP2021/007029 JP2021007029W WO2022180731A1 WO 2022180731 A1 WO2022180731 A1 WO 2022180731A1 JP 2021007029 W JP2021007029 W JP 2021007029W WO 2022180731 A1 WO2022180731 A1 WO 2022180731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- anchor
- branch line
- corrosion
- ground
- electrode
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 claims description 40
- 230000007797 corrosion Effects 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 229910001018 Cast iron Inorganic materials 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- UUWCBFKLGFQDME-UHFFFAOYSA-N platinum titanium Chemical compound [Ti].[Pt] UUWCBFKLGFQDME-UHFFFAOYSA-N 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910003455 mixed metal oxide Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000003381 stabilizer Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 2
- 239000002198 insoluble material Substances 0.000 description 2
- 229910000457 iridium oxide Inorganic materials 0.000 description 2
- -1 iron ions Chemical class 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- 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
- C23F13/20—Conducting electric current to electrodes
-
- 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
-
- 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
- C23F13/12—Electrodes characterised by the material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/10—Supporting structures directly fixed to the ground
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
Definitions
- the present invention relates to an anti-corrosion system that prevents corrosion of anchors buried underground to support utility poles.
- a utility pole which is one of the overhead structures, is a facility that exists on the ground and supports communication lines and power transmission lines, and is an important facility that serves as a foundation for providing power transmission and communication services (Patent Document 1 reference).
- the tension of the installed electric wire is the largest load.
- a utility pole which is the terminal end of a place where a whole underline is anchored, is provided with a branch line stretched on the surrounding ground in order to withstand the horizontal load and unbalanced load of the electric wire.
- one end of a branch line is connected to the top of a utility pole, and the other end of the branch line is connected to an anchor buried in the surrounding ground via a branch line rod.
- Anchors moor the guy lines to the ground (earth) via guy rods.
- feeder rods and anchors are exposed to the natural environment, especially temperature changes, rainfall and snowfall, and adhesion of sea salt particles. Therefore, it is in a state of being easily corroded. Furthermore, depending on the soil properties, the environment is such that corrosion progresses further, and in some cases problems such as not being able to obtain a sufficient bearing force to support the utility pole may occur. For this reason, a technique has been proposed in which a direct-current power supply device is prepared and an anti-corrosion current is supplied to branch rods and anchors to prevent corrosion (see Patent Document 2).
- branch line rods and anchors described above have been buried (cast) and moored in the ground all over Japan for a long period of 30 years or more, and it is not easy to secure a power supply for a long period of time. There was no problem.
- the present invention has been made in order to solve the above-described problems, and it is an object of the present invention to supply anti-corrosion current to branch line rods, anchors, etc., which are buried in the ground for a long period of time.
- the anti-corrosion system includes a utility pole provided on the ground, an anchor buried in the ground near the location where the utility pole is installed, a branch line connected to the utility pole, and the anchor and the branch line. an electrode buried in the ground near where the anchor is buried; and a power supply for supplying an anti-corrosion current using the underground portion of the branch line rod and the anchor as a cathode and the electrode as an anode.
- the power supply consists of solar cells.
- the anti-corrosion system includes a utility pole provided on the ground, an anchor buried in the ground in the vicinity of the place where the utility pole is installed, a branch line connected to the utility pole, and an anchor.
- a branch line rod that connects to the branch line, an electrode buried in the ground near where the anchor is buried, a power source that supplies an anticorrosion current using the underground portion of the branch line rod and the anchor as a cathode and the electrode as an anode.
- the power supply includes a commercial power supply and a DC/AC converter.
- the anticorrosion current is generated using a solar cell or a commercial power supply, the anticorrosion current can be supplied to branch rods, anchors, and the like buried underground for a long period of time. .
- FIG. 1 is a configuration diagram showing the configuration of an anti-corrosion system according to Embodiment 1 of the present invention.
- FIG. 2 is a configuration diagram showing the configuration of an anti-corrosion system according to Embodiment 2 of the present invention.
- Embodiment 1 First, an anti-corrosion system according to Embodiment 1 of the present invention will be described with reference to FIG.
- the system comprises a utility pole 101 , an anchor 102 , a guy wire 103 , a guy rod 104 , an electrode 105 and a power source 106 .
- the utility pole 101 is provided on the ground.
- the anchor 102 is buried in the ground 107 near the location where the utility pole 101 is provided.
- the branch line 103 is connected to the utility pole 101 .
- a branch rod 104 connects the anchor 102 and the branch line 103 .
- Anchor 102, guy wire 103, and guy rod 104 are made of steel.
- the branch line 103 can be composed of, for example, a steel stranded wire.
- the branch rod 104 can be a bar member made of steel or the like, for example.
- the electrodes 105 are buried in the ground 107 near where the anchors 102 are buried.
- the electrode 105 can be composed of, for example, a mixed metal oxide (MMO) in which titanium metal is coated with iridium oxide or the like.
- MMO mixed metal oxide
- the electrode 105 can be made of platinum-plated titanium (platinum-titanium electrode).
- the electrode 105 can be made of cast iron containing a high concentration of silicon (high silicon cast iron).
- the use of refractory electrodes such as MMO electrodes, platinum-titanium electrodes, and silicon-rich cast iron electrodes can be used for longer periods of time.
- the power supply 106 supplies anticorrosion current using the underground portion 107 of the branch rod 104 and the anchor 102 as cathodes and the electrode 105 as an anode.
- power supply 106 is composed of a solar cell.
- the solar cells can be flexible solar panels.
- a branch line cover 108 provided on the ground portion of the branch line rod 104 is provided.
- power supply 106 is attached to branch line cover 108 .
- a flexible solar battery panel is composed of dye-sensitized or organic solar battery cells, and has an energy conversion (sunlight to electric power) efficiency of 10%. It is suitable for attaching to the surface to form a direct-current power supply device.
- the anchor 102 for supporting the branch line 103 on the ground consists of a guide plate 121 to which the branch line rod 104 is connected to the tip side, a resistance plate 122 curvedly extending from the base end side of the guide plate 121, and a resistance plate 122 and a stabilizer 123 extending from the proximal side of the.
- the tip of the resistance plate 122 and the tip of the guide plate 121 face the utility pole 101 side, and the tip of the stabilizing plate 123 faces the direction crossing the utility pole 101 in plan view.
- a power source 106 composed of a solar cell generates an electromotive force during daytime with fine weather, and generates an anticorrosion current in the ground 107, so that the branch line rod 104 and the anchor 102 buried in the ground 107 are protected against corrosion. effect can be obtained. Since the power source 106 made up of solar cells generates an electromotive force over a long period of 30 years or more, the corrosion life of the anchor 102 and the branch line rod 104 is prolonged, and the utility pole 101 is operated over a longer period of time than in the past. It is possible to obtain a bearing force that safely supports the
- the steel material used for the anchor 102 and the branch rod 104 is an iron product (energetically unstable) refined by refining iron ore (iron oxide) in a factory and depriving it of oxygen. Corrosion is a phenomenon (oxidation) that attempts to return to a stable state (iron oxide). Therefore, oxygen (O 2 ) is essential for corrosion of steel materials.
- the steel material used for the anchor 102 and the branch rod 104 returns to the original iron oxide (corrosion) by combining with oxygen in the ground 107 (under the ground).
- the system comprises a utility pole 101, an anchor 102, a guy wire 103, a guy rod 104, an electrode 105, a commercial power supply 109a, and a DC/AC converter 109b.
- the utility pole 101 is provided on the ground.
- the anchor 102 is buried in the ground 107 near the location where the utility pole 101 is provided.
- the branch line 103 is connected to the utility pole 101 .
- a branch rod 104 connects the anchor 102 and the branch line 103 .
- Anchor 102, guy wire 103, and guy rod 104 are made of steel.
- the branch line 103 can be composed of, for example, a steel stranded wire.
- the branch rod 104 can be a bar member made of steel or the like, for example.
- the electrodes 105 are buried in the ground 107 near where the anchors 102 are buried.
- the electrode 105 can be composed of, for example, a mixed metal oxide (MMO) in which titanium metal is coated with iridium oxide or the like.
- MMO mixed metal oxide
- the electrode 105 can be made of platinum-plated titanium (platinum-titanium electrode).
- the electrode 105 can be made of cast iron containing a high concentration of silicon (high silicon cast iron).
- the use of refractory electrodes such as MMO electrodes, platinum-titanium electrodes, and silicon-rich cast iron electrodes can be used for longer periods of time.
- the commercial power supply 109a and the DC/AC converter 109b supply an anti-corrosion current using the ground 107 portion of the branch rod 104 and the anchor 102 as cathodes and the electrode 105 as an anode.
- the utility pole 101 is, for example, a so-called shared pole in which a communication line is installed at the bottom and a power line is installed at the top.
- a utility pole 101 of this type has a 100V AC line (commercial power supply) at the top of the utility pole 101, which can be used.
- the commercial power source 109a can be composed of a pole-mounted transformer provided on the utility pole 101.
- a branch line cover 108 provided on the ground portion of the branch line rod 104 is provided.
- DC/AC converter 109b is attached to branch line cover 108 .
- the anchor 102 for supporting the branch line 103 on the ground consists of a guide plate 121 to which the branch line rod 104 is connected to the tip side, a resistance plate 122 curvedly extending from the base end side of the guide plate 121, and a resistance plate 122 and a stabilizer 123 extending from the proximal side of the.
- the tip of the resistance plate 122 and the tip of the guide plate 121 face the utility pole 101 side, and the tip of the stabilizing plate 123 faces the direction crossing the utility pole 101 in plan view.
- the commercial power supply 109a which is the power supply, is supplied with power while the utility pole 101 is in use, and is generally supplied with power for a long period of 30 years or more. Therefore, according to the second embodiment.
- the anti-corrosion current can be supplied for a long period of time, the corrosion life of the anchor 102 and the branch line rod 104 is prolonged, and it becomes possible to obtain the supporting force for safely supporting the utility pole 101 for a longer period than in the conventional art. .
- the steel material used for the anchor 102 and the branch rod 104 is an iron product (energetically unstable) refined by refining iron ore (iron oxide) in a factory and depriving it of oxygen. Corrosion is a phenomenon (oxidation) that attempts to return to a stable state (iron oxide). Therefore, oxygen (O 2 ) is essential for corrosion of steel materials.
- the steel material used for the anchor 102 and the branch rod 104 returns to the original iron oxide (corrosion) by combining with oxygen in the ground 107 (under the ground).
- the anticorrosion current is generated by using the solar battery or the commercial power source, the anticorrosion current is supplied to branch line rods, anchors, etc. buried in the ground for a long period of time. become able to.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
Description
はじめに、本発明の実施の形態1に係る防食システムについて、図1を参照して説明する。このシステムは、電柱101、アンカ102、支線103、支線ロッド104、電極105、および電源106を備える。
次に、本発明の実施の形態2に係る防食システムについて、図2を参照して説明する。このシステムは、電柱101、アンカ102、支線103、支線ロッド104、電極105、商用電源109a、およびDC/ACコンバータ109bを備える。
Claims (7)
- 地上に設けられている電柱と、
前記電柱が設けられている箇所の近傍の地中に埋設されているアンカと、
前記電柱に接続されている支線と、
前記アンカと前記支線とを連結する支線ロッドと、
前記アンカが埋設されている近傍の前記地中に埋設された電極と、
前記支線ロッドの前記地中の部分および前記アンカを陰極とし、前記電極を陽極として防食電流を供給する電源と
を備え、
前記電源は、太陽電池から構成されていることを特徴とする防食システム。 - 請求項1記載の防食システムにおいて、
前記太陽電池は、フレキシブル太陽電池パネルであることを特徴とする防食システム。 - 地上に設けられている電柱と、
前記電柱が設けられている箇所の近傍の地中に埋設されているアンカと、
前記電柱に接続されている支線と、
前記アンカと前記支線とを連結する支線ロッドと、
前記アンカが埋設されている近傍の前記地中に埋設された電極と、
前記支線ロッドの前記地中の部分および前記アンカを陰極とし、前記電極を陽極として防食電流を供給する電源と
を備え
前記電源は、商用電源と、DC/ACコンバータとを備えることを特徴とする防食システム。 - 請求項3記載の防食システムにおいて、
前記商用電源は、前記電柱に設けられた柱上変圧器から構成されていることを特徴とする防食システム。 - 請求項1~4のいずれか1項に記載の防食システムにおいて、
前記支線ロッドの地上部分に設けられた支線カバーを備え、
前記電源の少なくとも一部は、前記支線カバーに取り付けられている
ことを特徴とする防食システム。 - 請求項1~5のいずれか1項に記載の防食システムにおいて、
前記支線ロッドおよび前記アンカは、鋼材から構成されていることを特徴とする防食システム。 - 請求項6記載の防食システムにおいて、
前記電極は、複合金属酸化物電極、白金チタン電極、および高ケイ素鋳鉄電極を含む難溶性電極であることを特徴とする防食システム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023501753A JPWO2022180731A1 (ja) | 2021-02-25 | 2021-02-25 | |
PCT/JP2021/007029 WO2022180731A1 (ja) | 2021-02-25 | 2021-02-25 | 防食システム |
US18/546,228 US20240117500A1 (en) | 2021-02-25 | 2021-02-25 | Anticorrotion system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2021/007029 WO2022180731A1 (ja) | 2021-02-25 | 2021-02-25 | 防食システム |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022180731A1 true WO2022180731A1 (ja) | 2022-09-01 |
Family
ID=83047866
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2021/007029 WO2022180731A1 (ja) | 2021-02-25 | 2021-02-25 | 防食システム |
Country Status (3)
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US (1) | US20240117500A1 (ja) |
JP (1) | JPWO2022180731A1 (ja) |
WO (1) | WO2022180731A1 (ja) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3391072A (en) * | 1965-10-04 | 1968-07-02 | Pacific Power & Light Company | Anode for cathodic protection |
JPS609887A (ja) * | 1983-06-30 | 1985-01-18 | Tokyo Gas Co Ltd | 地中埋設物の電気防食法 |
JPS62116790A (ja) * | 1985-11-18 | 1987-05-28 | Nakagawa Boshoku Kogyo Kk | 電気防食装置 |
JPH0681178A (ja) * | 1992-08-31 | 1994-03-22 | Tonen Corp | 地中埋設物の電気防蝕装置 |
JPH07286289A (ja) * | 1994-04-20 | 1995-10-31 | Tokyo Gas Co Ltd | 電気防食方法 |
JP2001303280A (ja) * | 2000-04-23 | 2001-10-31 | Masami Fujii | 支線の防蝕法 |
JP2004028795A (ja) * | 2002-06-26 | 2004-01-29 | Tokyo Gas Co Ltd | カソード防食施設遠隔監視システム |
WO2011145951A1 (en) * | 2010-05-21 | 2011-11-24 | Baker, Donna, Ann | Anchors |
JP2020532648A (ja) * | 2017-09-05 | 2020-11-12 | ウィットモア—,デイビッド ウィリアム | 太陽光パネルを用いた陰極腐食 |
-
2021
- 2021-02-25 JP JP2023501753A patent/JPWO2022180731A1/ja active Pending
- 2021-02-25 WO PCT/JP2021/007029 patent/WO2022180731A1/ja active Application Filing
- 2021-02-25 US US18/546,228 patent/US20240117500A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3391072A (en) * | 1965-10-04 | 1968-07-02 | Pacific Power & Light Company | Anode for cathodic protection |
JPS609887A (ja) * | 1983-06-30 | 1985-01-18 | Tokyo Gas Co Ltd | 地中埋設物の電気防食法 |
JPS62116790A (ja) * | 1985-11-18 | 1987-05-28 | Nakagawa Boshoku Kogyo Kk | 電気防食装置 |
JPH0681178A (ja) * | 1992-08-31 | 1994-03-22 | Tonen Corp | 地中埋設物の電気防蝕装置 |
JPH07286289A (ja) * | 1994-04-20 | 1995-10-31 | Tokyo Gas Co Ltd | 電気防食方法 |
JP2001303280A (ja) * | 2000-04-23 | 2001-10-31 | Masami Fujii | 支線の防蝕法 |
JP2004028795A (ja) * | 2002-06-26 | 2004-01-29 | Tokyo Gas Co Ltd | カソード防食施設遠隔監視システム |
WO2011145951A1 (en) * | 2010-05-21 | 2011-11-24 | Baker, Donna, Ann | Anchors |
JP2020532648A (ja) * | 2017-09-05 | 2020-11-12 | ウィットモア—,デイビッド ウィリアム | 太陽光パネルを用いた陰極腐食 |
Also Published As
Publication number | Publication date |
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US20240117500A1 (en) | 2024-04-11 |
JPWO2022180731A1 (ja) | 2022-09-01 |
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