CN100424229C - Metal pipeline line electrochemical anticorrosion apparatus - Google Patents
Metal pipeline line electrochemical anticorrosion apparatus Download PDFInfo
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- CN100424229C CN100424229C CNB2006100426620A CN200610042662A CN100424229C CN 100424229 C CN100424229 C CN 100424229C CN B2006100426620 A CNB2006100426620 A CN B2006100426620A CN 200610042662 A CN200610042662 A CN 200610042662A CN 100424229 C CN100424229 C CN 100424229C
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Abstract
The present invention relates to a lineal electrochemical anticorrosion device in a metal pipeline, which comprises an anode arranged in a metal pipeline, steel wires arranged in the anode and an anode insulating cover arranged outside the anode, wherein the end of the anode is connected with the metal pipeline through a conducting wire. A current hole is processed on the anode insulating cover. The present invention adopts the method that the metal anode is arranged in the metal pipeline, and the anode in liquid of the metal pipeline is electrolyzed into metal ions through anode metal atoms. The metal ions enters the conveyed liquid in the metal pipeline from the current hole on the anode insulating cover, and electrons generated by the anode ionization flow to the metal pipeline through the conducting wire for supplying the metal pipeline with the electrons. The present invention makes the corrosion process from the ions to the atoms for the metal pipeline slowed up or eliminated, avoids the corrosion of the metal pipeline and protects the metal pipeline. The present invention has the advantages of reasonable design, simple structure, good corrosion resistant performance, long service life, low product cost, etc. and can be widely applied to the inner part of the metal pipeline used for conveying liquid.
Description
Technical field
The invention belongs to the anticorrosive metal technical field of electrochemistry, be specifically related to metal pipeline line electrochemical anticorrosion apparatus.
Background technology
Pipeline is one of major equipment of carrying liquids and gases, particularly carry the strong liquid of corrodibility, very serious to Corrosion of Pipeline, reduced the work-ing life of pipeline greatly, pipeline is after for some time is used corrosion, will produce leakage, seriously pollute environment, so pipeline is needed scheduled maintenance and replacing.The corrosion of petroleum transportation pipeline is also quite serious, and oil field gathering and transportation is that buried caliber is less underground with the unique point of profit transport pipe, and transport pipe reaches myriametre, and oil field gathering and transportation has been brought inconvenience with the maintenance of profit transport pipe.For this reason, external at present and domestic all relevant for solving the report of oil field gathering and transportation with profit corrosion-proof technology for pipeline problem.Solving the etch-proof a kind of technical scheme of buried pipeline is to adopt to add tectum at inner-walls of duct, but in a single day the tectum of inner-walls of duct peel off, and will accelerate the corrosion of inner-walls of duct, and the tectum of changing inner-walls of duct is difficulty very again, makes troubles to maintenance.Solving the etch-proof another kind of technical scheme of buried pipeline is to add sanitas to carry out the inner-walls of duct protection in the liquid of being carried, the amount of the sanitas that is added is difficult to control, add the quantity not sufficient of sanitas, can cause inner-walls of duct corrosion even perforation, to add the amount of sanitas too much, can influence the performance of the cost and the liquid of carrying.Solving buried pipeline, etch-proof to also have a kind of technical scheme be to adopt the method for electrochemical anti-corrosive erosion.
Patent publication No. is that CN96236220.4, denomination of invention are the utility model patent of " buried pipeline cathodic protector ", the galvanic protection that solves the buried pipeline outer wall, and this protector can not be used for the buried pipeline inner wall anti-corrosive.Patent publication No. is that CN00221122.X, denomination of invention are the utility model of " can survey the sacrificial anode device of metal vessel inwall cathodic protection potential "; be applicable to the vertical and horizontal metal vessel inwall galvanic protection that the diameter length is short; anode bar is as sacrificial anode; permanent reference electrode is set in the vertical and horizontal metal vessel; by wiring sacrificial anode, reference electrode are connected in the tester of metal vessel outside, can survey protection potential.It is little that anode bar is done the sacrificial protection zone length; this patent can only be used in the little metal vessel of slenderness ratio; can not be used for the little metallic conduit of caliber, line of pipes reaches the buried pipeline of myriametre, does sacrificial anode with anode bar and can not be used for the buried pipeline inner wall anti-corrosive.
Patent publication No. is that CN200320110870.1, denomination of invention are the utility model of " insulating coating composite sacrificial anode anti-corrosion storage tank "; adopt epoxy glass flake insulating coating and sacrificial aluminium alloy anode piece jointly to the reservoir walls protection against corrosion; because the aluminum alloy anode piece is similar with the anode bar in " can survey the sacrificial anode device of metal vessel inwall cathodic protection potential " patent, can not be used for the buried pipeline inner wall anti-corrosive.Patent publication No. is that CN200310106321.1, denomination of invention are the patent of invention of " insulating coating composite sacrificial anode storage tank internal corrosion prevention technology ", with patent publication No. be CN200320110870.1, denomination of invention utility model for " insulating coating composite sacrificial anode anti-corrosion storage tank ", be the patent of same flesh and blood.Patent publication No. is CN200410059998.9; denomination of invention is the patent of invention of " method of crude oil storage tank inside and outside wall comprehensive anticorrosive and deep well anode medelling protection "; crude oil storage tank adopts outer wall deep well anode medelling protection; can protect a plurality of storage tank outer walls not corrode simultaneously; it is CN200310106321.1 that the crude oil storage tank inner wall anti-corrosive still adopts patent publication No.; patent publication No. is CN200320110870.1; it is anticorrosion that patent publication No. is that the similar aluminum alloy anode piece of CN00221122.X is done sacrificial anode, and difference is that the aluminum alloy anode piece determines size by experiment.This patent can not be used for the buried pipeline inner wall anti-corrosive.Number of patent application 97118860.2, denomination of invention are the patent of invention of " anti-corrosion method of metal vessel and metal tubes internal surface and device "; adopt the electro-chemical protection anti-corrosion method of impressed current; by the ionization bar of point-like as anode; link to each other with field generator by being connected and fixed part; field generator provides electric current to implement the protection against corrosion of metal vessel and metal tubes internal surface for the ionization bar of point-like as power supply.The primary structure of this patent is a field generator, adopt the ionization bar of point-like, on the metallic conduit at interval about one meter distance open a hole, fix the protection against corrosion that the ionization bar of a point-like realizes internal surface with being connected and fixed part, for buried at subterranean pipeline, caliber is little, transfer lime line length, the ionization bar of this class point-like are done anode can not connect a lot of line construction enforcements in soil, for safety, also do not allow to open on pipeline a large amount of holes, this patent can not be used for the buried pipeline inner wall anti-corrosive.
Summary of the invention
Technical problem to be solved by this invention is to overcome the shortcoming of above-mentioned buried pipeline anticorrosion equipment or corrosion-resisting device, provide a kind of reasonable in design, simple in structure, antiseptic property is good, long service life, metal pipeline line electrochemical anticorrosion apparatus that product cost is low.
Solving the problems of the technologies described above the technical scheme that is adopted is: it comprises the anode that is arranged in the metallic conduit, be arranged on the steel wire in the anode and be arranged on the outer anodized insulation cover of anode, the anodic end links to each other with metallic conduit by lead, and anodized insulation puts and is processed with current aperture.
Solving the problems of the technologies described above the another kind of technical scheme that is adopted is: it comprises the anode that is arranged in the metallic conduit, be arranged on the steel wire in the anode and be arranged on the outer anodized insulation cover of anode, anodized insulation puts and is processed with current aperture, it also comprises direct supply, the positive pole of direct supply by lead link to each other with anode, negative pole links to each other with metallic conduit by lead.
Anode of the present invention is aluminium alloy conductor or is magnalium zinc alloy lead.
Anodized insulation cover of the present invention is rubber coating or composite steel wire rubber coating.
The current aperture that anodized insulation of the present invention puts is: put at anodized insulation on the cross section of same length and radially be processed with 4～6 current aperture, current aperture on cross section and the current aperture on the adjacent cross section are staggered, the aperture of current aperture is 3～6mm, and the current aperture on cross section and the axial distance of the current aperture on the adjacent cross section are 2～5 times of aperture.
The external diameter of aluminium alloy conductor of the present invention or magnalium zinc alloy lead is 10～30mm, and anodized insulation cover external diameter is than the big 5mm of external diameter of aluminium alloy conductor or magnalium zinc alloy lead.
The present invention adopts metal anode is set in metallic conduit; anode is electrolyzed to produce metal ion by the anode metal atom in the liquid of metallic conduit; the current aperture that metal ion puts from anodized insulation enters the liquid that is transferred in the metallic conduit; the electronics that the anode ionization produces flows to metallic conduit by lead; for metallic conduit provides electronics; making metallic conduit become the ionic corrosion process by atom is slowed down or is eliminated; avoid the corrosion of metallic conduit, realized the purpose of protective money metal conduit.Advantages such as that the present invention has is reasonable in design, simple in structure, antiseptic property is good, long service life, product cost are low can be promoted the use of in the metallic conduit of carrying liquid.
Description of drawings
Fig. 1 is the connection synoptic diagram of the embodiment of the invention 1 in metallic conduit 4.
Fig. 2 is the sectional view of the present invention among Fig. 1.
Fig. 3 is the connection synoptic diagram of the embodiment of the invention 2 in metallic conduit 4.
Embodiment
The present invention is further described below in conjunction with drawings and Examples, but the invention is not restricted to these embodiment.
Embodiment 1
In Fig. 1,2, the metal pipeline line electrochemical anticorrosion apparatus of present embodiment is made of anodized insulation cover 1, anode 2, steel wire 3 connections.
Anodized insulation cover 1 is sleeved on the outside of anode 2, and steel wire 3 is sleeved in the anode 2.The anode 2 of present embodiment adopts aluminium alloy conductor, and the external diameter of aluminium alloy conductor is 20mm, 3 booster actions of steel wire.Anodized insulation cover 1 is placed in the metallic conduit 4, and the end of anode 2 is connected with metallic conduit 4 by lead.The present invention is placed in the metallic conduit 4, and metallic conduit 4 is a negative electrode.The anodized insulation cover 1 of present embodiment is a rubber coating, the external diameter of anodized insulation cover 1 is 25mm, anodized insulation cover 1 is used to isolate anode 2 and metallic conduit 4 negative electrodes, on the cross section of same length on the anodized insulation cover 1, radially be processed with to vertical summetry 4 current aperture, the aperture of current aperture is 4mm, current aperture on cross section and the current aperture on the adjacent cross section are staggered, the current aperture on cross section and the axial distance of the current aperture on the adjacent cross section are 16mm, current aperture is used to form current channel, makes that whole metallic conduit 4 inwalls up and down all can protection against corrosion.In the liquid of anode 2 in metallic conduit 4; anode 2 atoms metals are electrolyzed to produce ion; the current aperture of metal ion from anodized insulation cover 1 enters the liquid that is transferred in the metallic conduit 4; the electronics that the anode ionization produces flows to metallic conduit 4 by lead; for metallic conduit 4 provides electronics, changed the current potential of metallic conduit 4, make metallic conduit 4 become the ionic corrosion process and slowed down or eliminate by atom; avoid the corrosion of metallic conduit 4, realized the purpose of protective money metal conduit 4.
The metal pipeline line electrochemical anticorrosion apparatus of this structure of the present invention can be placed one in the metallic conduit 4 of every 2000m, when the liquid that is transferred flows in metallic conduit 4, the swing in metallic conduit 4 of this device can slow down the scale velocity that is transferred liquid.The present invention is suitable for using in the metallic conduit 4 of carrying liquid.
In Fig. 3, the metal pipeline line electrochemical anticorrosion apparatus of present embodiment is made of anodized insulation cover 1, anode 2, steel wire 3, direct supply 5 connections.The positive pole of direct supply 5 by lead link to each other with anode 2, negative pole links to each other with metallic conduit 4 by lead.The connecting relation of other component and component is identical with embodiment 1.
Present embodiment adopts and embodiment 1 identical electrochemical cathodic protection protection against corrosion principle; it is an external direct supply on protected metallic conduit 4; protected metallic conduit 4 is linked to each other with the negative pole of direct supply; feed cathodic current and make metallic conduit 4 cathodic polarizations; metallic conduit 4 loses electronics by atom and becomes in the ionic process; provide electronics by direct supply for metallic conduit 4; making metallic conduit 4 become the ionic corrosion process by atom is slowed down or is eliminated; avoid the corrosion of metallic conduit 4, realized the purpose of protective money metal conduit 4.
Embodiment 3
In embodiment 1,2, anode 2 adopts aluminium alloy conductor, the external diameter of anode 2 is 10mm, the external diameter of anodized insulation cover 1 is 15mm, on the cross section of same length on the anodized insulation cover 1, radially be processed with to vertical summetry 4 current aperture, the aperture of current aperture is 3mm, and current aperture on cross section and the current aperture on the adjacent cross section are staggered, and the current aperture on cross section and the axial distance of the current aperture on the adjacent cross section are 6mm.The connecting relation of other component and component is identical with respective embodiments.
Embodiment 4
In embodiment 1,2, anode 2 adopts aluminium alloy conductor, the external diameter of anode 2 is 30mm, the external diameter of anodized insulation cover 1 is 35mm, on the cross section of same length on the anodized insulation cover 1, radially be processed with 5 current aperture, the aperture of current aperture is 6mm, and current aperture on cross section and the current aperture on the adjacent cross section are staggered, and the current aperture on cross section and the axial distance of the current aperture on the adjacent cross section are 30mm.The connecting relation of other component and component is identical with respective embodiments.
Embodiment 5
In above embodiment 1～4, anode 2 adopts aluminium alloy conductor, on the cross section of same length on the anodized insulation cover 1, radially be processed with 6 current aperture, current aperture on cross section and the current aperture on the adjacent cross section are staggered, and the axial distance and the respective embodiments of the current aperture on the current aperture on the external diameter of the external diameter of anode 2, anodized insulation cover 1, the aperture of current aperture, the cross section and the adjacent cross section are identical.The connecting relation of other component and component is identical with respective embodiments.
Embodiment 6
In above embodiment 1～5, anode 2 adopts magnalium zinc alloy lead.The connecting relation of other component and component is identical with respective embodiments.
Embodiment 7
In above embodiment 1～6, anodized insulation cover 1 is the composite steel wire rubber coating.The connecting relation of other component and component is identical with respective embodiments.
Claims (6)
1. metal pipeline line electrochemical anticorrosion apparatus, it is characterized in that: it comprises the anode (2) that is arranged in the metallic conduit (4), be arranged on the steel wire (3) in the anode (2) and be arranged on the outer anodized insulation cover (1) of anode (2), the end of anode (2) links to each other with metallic conduit (4) by lead, and the anodized insulation cover is processed with current aperture on (1).
2. metal pipeline line electrochemical anticorrosion apparatus, it is characterized in that: it comprises the anode (2) that is arranged in the metallic conduit (4), be arranged on the steel wire (3) in the anode (2) and be arranged on the outer anodized insulation cover (1) of anode (2), the anodized insulation cover is processed with current aperture on (1), it also comprises direct supply (5), the positive pole of direct supply (5) by lead link to each other with anode (2), negative pole links to each other with metallic conduit (4) by lead.
3. according to claim 1 or 2 described metal pipeline line electrochemical anticorrosion apparatus, it is characterized in that: said anode (2) is aluminium alloy conductor or is magnalium zinc alloy lead.
4. according to claim 1 or 2 described metal pipeline line electrochemical anticorrosion apparatus, it is characterized in that: said anodized insulation cover (1) is rubber coating or composite steel wire rubber coating.
5. according to claim 1 or 2 described metal pipeline line electrochemical anticorrosion apparatus, it is characterized in that the current aperture on the said anodized insulation cover (1) is: on the cross section of the last same length of anodized insulation cover (1), radially be processed with 4～6 current aperture, current aperture on cross section and the current aperture on the adjacent cross section are staggered, the aperture of current aperture is 3～6mm, and the current aperture on cross section and the axial distance of the current aperture on the adjacent cross section are 2～5 times of aperture.
6. according to the described metal pipeline line electrochemical anticorrosion apparatus of claim 3, the external diameter that it is characterized in that said aluminium alloy conductor or magnalium zinc alloy lead is 10～30mm, and anodized insulation cover (1) external diameter is than the big 5mm of external diameter of aluminium alloy conductor or magnalium zinc alloy lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100426620A CN100424229C (en) | 2006-04-11 | 2006-04-11 | Metal pipeline line electrochemical anticorrosion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100426620A CN100424229C (en) | 2006-04-11 | 2006-04-11 | Metal pipeline line electrochemical anticorrosion apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1851054A CN1851054A (en) | 2006-10-25 |
| CN100424229C true CN100424229C (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100426620A Expired - Fee Related CN100424229C (en) | 2006-04-11 | 2006-04-11 | Metal pipeline line electrochemical anticorrosion apparatus |
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| CN (1) | CN100424229C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031530A (en) * | 2010-12-07 | 2011-04-27 | 青岛赢海防腐防污技术有限公司 | Current anticorrosive protecting device, method and centrifugal pump |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148968A (en) * | 2016-08-04 | 2016-11-23 | 盐城工学院 | A kind of cathode protecting process and device |
| CN109972148A (en) * | 2017-12-27 | 2019-07-05 | 武汉海尔热水器有限公司 | Anode structure and water heater |
| CN108482979B (en) * | 2018-05-10 | 2024-03-01 | 深圳市明远建筑科技有限公司 | Double-ion-layer lubrication structure, equipment and lubrication method based on pipeline transportation |
| CN114576467B (en) * | 2022-03-04 | 2023-07-14 | 大连理工大学人工智能大连研究院 | Method and device for installing linear anode on inner wall of thin pipeline |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1271141A1 (en) * | 1985-02-20 | 1996-02-10 | Татарский Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности | Device for cathode protection of inner reservoir surface against corrosion |
| CN2466162Y (en) * | 2001-02-21 | 2001-12-19 | 中国科学院海洋研究所 | Bar sacrificial anode |
-
2006
- 2006-04-11 CN CNB2006100426620A patent/CN100424229C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1271141A1 (en) * | 1985-02-20 | 1996-02-10 | Татарский Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности | Device for cathode protection of inner reservoir surface against corrosion |
| CN2466162Y (en) * | 2001-02-21 | 2001-12-19 | 中国科学院海洋研究所 | Bar sacrificial anode |
Non-Patent Citations (2)
| Title |
|---|
| 柔性阳极的阴极保护技术在我国管线上的应用. 肖利明.管道技术与设备，第10期. 1998 |
| 柔性阳极的阴极保护技术在我国管线上的应用. 肖利明.管道技术与设备，第10期. 1998 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031530A (en) * | 2010-12-07 | 2011-04-27 | 青岛赢海防腐防污技术有限公司 | Current anticorrosive protecting device, method and centrifugal pump |
| CN102031530B (en) * | 2010-12-07 | 2013-05-15 | 青岛赢海防腐防污技术有限公司 | Current anticorrosive protecting device, method and centrifugal pump |
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| Publication number | Publication date |
|---|---|
| CN1851054A (en) | 2006-10-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Shuangxin Petroleum Machinery Co., Ltd. Assignor: Xian Petroleum Univ. Contract fulfillment period: 2008.11.18 to 2014.11.17 contract change Contract record no.: 2009320000877 Denomination of invention: Metal pipeline line electrochemical anticorrosion apparatus Granted publication date: 20081008 License type: Exclusive license Record date: 2009.5.14 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.18 TO 2014.11.17; CHANGE OF CONTRACT Name of requester: JIANGSU SHUANGXIN OIL MACHINERY CO., LTD. Effective date: 20090514 |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Jiangsu Shuangxin Petroleum Machinery Co., Ltd. Assignor: Xian Petroleum Univ. Contract record no.: 2009320000877 Date of cancellation: 20110622 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20120411 |