CN1752292A - Changeable deep well anode land bed and construction method - Google Patents
Changeable deep well anode land bed and construction method Download PDFInfo
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- CN1752292A CN1752292A CN 200510094559 CN200510094559A CN1752292A CN 1752292 A CN1752292 A CN 1752292A CN 200510094559 CN200510094559 CN 200510094559 CN 200510094559 A CN200510094559 A CN 200510094559A CN 1752292 A CN1752292 A CN 1752292A
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Abstract
An exchangeable deep-well type anode earth-bed for protecting the buried metallic body, such as steel pipe or the bottom plate of storage tank features that the perforated concrete pipe is used as its protecting pipe, the small-size, light-weight and anticorrosive metallic oxide is used as its anode rod and the underground water is used as electrically conductive medium. Its construction method includes such steps as prefabricating perforated concrete pipe, drilling deep well, putting the concrete pipe in the deep well, and installing anode rod.
Description
Technical field
The present invention relates to changeable deep well anode land bedly, the metal object that is particularly useful for burying ground or contacts with ground is as the electro-chemical protection of steel pipe, storage tank bottom plate etc.
Background technology
Galvanic protection is a kind of relatively rational and effective anticorrosion technique to the metal structures, and it as negative electrode, adopts external power source to provide electronics by anode bodies to the protection object on protected object, to slow down or to eliminate corrosion of metal.Deep well anode land bed as one of chief component of cathodic protection system plays crucial effects to effective operation of total system.At present, using more anode material is graphite anode or high silicon cast-iron anode, but when adopting deep-well as anode groundbed, because the material own wt is bigger, and cast iron fragility is big, be easy to fracture, add packing materials such as coke, more than ten anodes successfully will be installed in the dark anode well of tens meters even rice up to a hundred, its difficulty of construction is very high, accidentally will cause accidents such as anode cable fracture, the well that collapses.After this deep well anode land bed construction was finished, the coke of inserting was fixed on anode bodies in the deep-well, belonged to disposable engineering, when anode material runs out of or is in operation when ging wrong, can't change and safeguard that whole anode system is also just discarded.In addition, in the operational process of anode well, because reasons such as the fracture of cable, the damage at cable splice place, anodic ununiformity dissolving (end effect and neck effect) and gas obstruction, the deep well anode system will works better, and can't repair, can only discard reconstruction, cause the waste of resource.
Summary of the invention
In view of the problem that prior art exists, it is little to the purpose of this invention is to provide a kind of volume, in light weight, rational in infrastructure, easy construction, and operating performance is good, and what be convenient to keep in repair is changeable deep well anode land bed.
The present invention is changeable deep well anode land bed, it comprises the anode well body, be located at the intravital anode bar of well, the cable that connects anode bar, the terminal box that is connected with potentiostat, described anode well body is that a plurality of sleeve pipes made from concrete constitute, is furnished with on the sleeve pipe and feeds phreatic some infiltrations hole, and be conducting medium with underground water; Sleeve pipe and sleeve pipe junction are provided with centralizer, and being located at the intravital anode bar of well is mixed metal oxide; The described mixed metal oxide of making anode bar is matrix with the copper pipe, and matrix surface plates with layer of titanium metal, the outer oxide conducting layer that is coated with again with ruthenium dioxide.
The construction that the present invention is changeable deep well anode land bed,
Step 1: with concrete prefabricated multi-hole type sleeve pipe, aperture on the pipeline and distributive law are set the size of telescopic diameter and length to guarantee that pipeline has intensity exosmosis is advisable according to engine request;
Step 2: carry out drilling well with deep drilling rig at select location, use mud off, to guarantee that the borehole wall can not subside in drilling process;
Step 3: after drilling well is finished, propose rig, in concrete sleeve lower going-into-well successively, adopt the centralizer butt joint between every joint sleeve pipe, from the shaft bottom to ground, be connected to form the anode well body;
Step 4: the metal oxide anode rod is strung by fixed spacing with high-density PVC rope, rely on rope and tie cable that anode bar is suspended in the well, and fix, then with the cable thereto at well head.
The invention has the beneficial effects as follows: adopt and be furnished with the concrete sleeve in some holes as deep well anode land bed protective tube; and it is little with volume; in light weight but the metal oxide materials Corrosion Protection excellence is an anode; with underground water is conducting medium; according to earlier with concrete prefabricated multi-hole type sleeve pipe; drilling well; running casing and the sequence of steps construction of laying anode bar; but one-piece construction had both had good application property; has good maintainability again; the gas that groundbed produces in operational process directly benefit goes out, and has avoided because the problem that the stifled phenomenon of gas causes deepwell ground bed to use.Anode material separates with the well body; in operational process in case occur that anode material exhausts or during some other problem; can keep original anode well, just anode be taken out, repair or replace; and do not need to dig a well again; saved resource greatly, reduced cost, be applicable to the metal object that buries ground or contact with ground; as the protection of steel pipe, storage tank bottom plate etc., tool is practicality widely.
Description of drawings
Fig. 1 is the changeable deep well anode land bed structure iron of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Among the figure: 1-anode well body, 2-anode bar, 3-water, 4-cable, 5-terminal box, 6-centralizer.
Embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
The present invention is originally changeable deep well anode land bed, it is mainly by anode well body 1, be located at the anode bar 2 in the well body 1, the cable 4 that connects anode bar, the terminal box 5 that is connected with potentiostat is formed, this anode well body 1 is made of a plurality of sleeve pipes made from concrete, the some infiltrations of cloth hole on each sleeve pipe, so that feeding with water is conducting medium underground water 3, aperture on the sleeve pipe and distributive law are to guarantee that pipeline has certain intensity water can be advisable by interior exosmosis, the centralizer 6 that sleeve pipe and sleeve pipe junction adopt angle steel to make, 6 fens three angles of centralizer are symmetrical arranged, and guarantee not misplace between sleeve pipe and the sleeve pipe with this.The intravital anode bar 3 of well adopts mixed metal oxide, and this mixed metal oxide is matrix with the copper pipe, and matrix surface plates with layer of titanium metal, the outer oxide conducting layer that is coated with again with ruthenium dioxide.
The construction that the present invention is changeable deep well anode land bed, adopt concrete prefabricated multi-hole type sleeve pipe, aperture on the pipeline and distributive law are to guarantee that pipeline has intensity exosmosis is advisable, set the size of telescopic diameter and length according to engine request, as setting casing diameter is 300mm, and length is with 1m.Adopt deep drilling rig to carry out drilling well, use mud off, to guarantee that the borehole wall can not subside in drilling process at select location; Be drilled into the degree of depth of requirement in anode well after; rig is proposed; with in the multi-hole type concrete duct lower going-into-well as the protective tube of the borehole wall; with guarantee the borehole wall can not subside and can make well inside and outside keep electrical connectivity (is medium with water); adopt centralizer 6 to dock between the every joint sleeve pipe of concrete and the sleeve pipe, from the shaft bottom to ground, be connected to form anode well body 1.Metal oxide anode rod is strung by fixed spacing with high-density PVC rope, and dependence rope and tie cable 4 are suspended on anode bar in the well, and fix at well head, and anode material separates with the well body.Anode cable gathers back thereto 5, introduces between galvanic protection by terminal box 5, is connected on the respective terminal of potentiostat.
Claims (3)
1. changeable deep well anode land bed, it comprises anode well body (1), be located at the anode bar (2) in the well body (1), the cable (4) that connects anode bar, the terminal box that is connected with potentiostat (5), it is characterized in that: described anode well body (1) is furnished with the some infiltrations hole that feeds underground water (3) for a plurality of sleeve pipes made from concrete constitute on the sleeve pipe, be conducting medium with underground water; Sleeve pipe and sleeve pipe junction are provided with centralizer (6), and being located at the intravital anode bar of well (2) is mixed metal oxide.
2. according to claim 1 changeable deep well anode land bed, it is characterized in that: the described mixed metal oxide of making anode bar (2) is matrix with the copper pipe, and matrix surface plates with layer of titanium metal, the outer oxide conducting layer that is coated with again with ruthenium dioxide.
3. changeable deep well anode land bed construction according to claim 1 is characterized in that:
Step 1: with concrete prefabricated multi-hole type sleeve pipe, aperture on the pipeline and distributive law are set the size of telescopic diameter and length to guarantee that pipeline has intensity exosmosis is advisable according to engine request;
Step 2: carry out drilling well with deep drilling rig at select location, use mud off, to guarantee that the borehole wall can not subside in drilling process;
Step 3: after drilling well is finished, propose rig, in concrete sleeve lower going-into-well successively, adopt centralizer (6) butt joint between every joint sleeve pipe, from the shaft bottom to ground, be connected to form anode well body (1);
Step 4: the metal oxide anode rod is strung by fixed spacing with high-density PVC rope, rely on rope and tie cable (4) that anode bar is suspended in the well, and fix, then with cable thereto (5) at well head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094559 CN1752292A (en) | 2005-09-27 | 2005-09-27 | Changeable deep well anode land bed and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094559 CN1752292A (en) | 2005-09-27 | 2005-09-27 | Changeable deep well anode land bed and construction method |
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| CN1752292A true CN1752292A (en) | 2006-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510094559 Pending CN1752292A (en) | 2005-09-27 | 2005-09-27 | Changeable deep well anode land bed and construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191504A (en) * | 2011-04-18 | 2011-09-21 | 北京市燃气集团有限责任公司 | Replaceable anodic pool |
| CN109913877A (en) * | 2019-03-22 | 2019-06-21 | 青岛双瑞海洋环境工程股份有限公司 | Easily replaceable large-scale Cydariform rotary filtering-net cathode protection device |
| CN110778281A (en) * | 2019-12-02 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Elastic skeleton centralizer for corrosion prevention of outer wall of casing pipe and processing and using method thereof |
| CN111926336A (en) * | 2020-08-07 | 2020-11-13 | 中国石油天然气集团有限公司 | Flange type multi-lead deep well anode device and manufacturing method |
-
2005
- 2005-09-27 CN CN 200510094559 patent/CN1752292A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191504A (en) * | 2011-04-18 | 2011-09-21 | 北京市燃气集团有限责任公司 | Replaceable anodic pool |
| CN102191504B (en) * | 2011-04-18 | 2013-03-27 | 北京市燃气集团有限责任公司 | Replaceable anodic pool |
| CN109913877A (en) * | 2019-03-22 | 2019-06-21 | 青岛双瑞海洋环境工程股份有限公司 | Easily replaceable large-scale Cydariform rotary filtering-net cathode protection device |
| CN109913877B (en) * | 2019-03-22 | 2021-01-26 | 青岛双瑞海洋环境工程股份有限公司 | Easy-to-replace cathode protection device for large drum-shaped rotary filter screen |
| CN110778281A (en) * | 2019-12-02 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Elastic skeleton centralizer for corrosion prevention of outer wall of casing pipe and processing and using method thereof |
| CN111926336A (en) * | 2020-08-07 | 2020-11-13 | 中国石油天然气集团有限公司 | Flange type multi-lead deep well anode device and manufacturing method |
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