CN2753693Y - Crude oil storage tank bottom plate external cathode protecting device - Google Patents
Crude oil storage tank bottom plate external cathode protecting device Download PDFInfo
- Publication number
- CN2753693Y CN2753693Y CN 200420103676 CN200420103676U CN2753693Y CN 2753693 Y CN2753693 Y CN 2753693Y CN 200420103676 CN200420103676 CN 200420103676 CN 200420103676 U CN200420103676 U CN 200420103676U CN 2753693 Y CN2753693 Y CN 2753693Y
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- storage tank
- anode bodies
- bottom plate
- anode
- crude oil
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Abstract
The utility model relates to a crude oil storage tank bottom plate external cathode protecting device, which comprises a potentiostat [4] and anode bodies [2], wherein the lower part of the bottom of a storage tank [1] is at least provided with three anode bodies [2], and the anode bodies are radially arranged and symmetrically and horizontally arranged under the lower part of the bottom of the storage tank. The utility model has the advantages of reasonable design, simple, convenient and safe construction and uniform current distribution, can realize that a cathode of the independent added current of single storage tank can be protected by dispensing with an electrical insulation partition reforming measure, such as an insulating flange, etc., and successfully solves the problem that a normal cathodic protection system is difficult to reach qualified cathodic protection in the environment that the soil resistance rate of a storage tank region reaches more than 500 omega.
Description
Technical field
The utility model relates to a kind of crude oil storage tank corrosion-proof device that is used for, particularly a kind of bottom plate of crude oil tank outside cathodic protector.
Background technology
The bottom plate of crude oil tank outer wall is anticorrosion and perishable because of can't regularly painting physics.
Its reason for corrosion mainly is that the tank bottom outer wall contacts with soil and is subjected to factor affecting such as corrosive ion content, stray current in coating integraty, tar sand electrical resistivity, environment aqueous ingredients and the water, corrosion following regularity arranged: 1, a jar base plinth is infiltrated in the outer draining in rainwater, turf irrigation water and jar end, these water can cause the tank base resistivity decreased on the one hand, on the other hand, also can produce corrosion (with Cl to exposed metal
-The spot corrosion perforation is main).2, coating and tar sand are aging, make exposed metal/bare metal on the one hand, and form the electrochemical corrosion loop; Electrical resistivity is reduced, make the easier generation of corrosion.3, after jar base plinth tar sand resistivity decreased, the heavy current of thundering and producing is quickened the corrosion (AC corrosion) of bare metal.4, soft basic asphalt sand the slit can occur under the effect of gravity, thereby produces oxygen differential concentration corrosion and crevice corrosion.5, there is the temperature difference inside and outside the storage tank,, is enriched with Cl thereby Outer Bottom Plating is in often because of capillary pumped effect
-Be main Korrosionsmedium environment, thereby constitute corrosion.
At present, the tank bottom outer wall anticorrosion aspect, cathode protection because have economy, advantage such as reliable and effective is generalizable.The vicennial engineering practice of having had an appointment at home of tank cathodic protection technology is from also modal shallow anode ground bed system development the earliest to now newly-built storage tank meshed anode system with adopt the deep well anode system to carry out regional cathode protection.But the existing tank bottom outer wall cathodic protector that is used for; as the deep well anode system; because the laying and the structural reason of anode bodies own of its anode bodies; cause the current distribution homogeneity poor; large-scale storage tank base plate center is under proteciton; influence the cathode protection effect, and compatible with environment is not strong, is difficult to reach up-to-standard cathode protection effect up to the tank field more than the 500 Ω m at soil resistivity.Though meshed anode system cathode protection effect is more satisfactory, complex structure, cost height can't be installed and used this technology at the labour storage tank and carry out cathode protection.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art and provides a kind of easy construction, safety, current distribution even, and is fit to the bottom plate of crude oil tank outside cathodic protector of high electric resistance of soil environment.
The purpose of this utility model can realize by following technical measures: this device comprises potentiostat, anode bodies, anode bodies is connected with the anode output end of potentiostat by lead-in wire, at least be provided with three anode bodies and be installed in the beneath side of storage tank, arrange with the radial radiation shape.
Anode bodies comprises hollow steel pipe, and permanent anode bar is installed in the steel pipe, and is filled with the conductive material obturator.
This anode bodies symmetry, on even keel are installed in the beneath side of storage tank.Reinforcing bar body in the tank foundation fine strain of millet is connected by circuit with storage tank bottom plate, constitutes the current shielding body.
Be embedded with the ring-type zinc band that constitutes the earthing potential equilibrium activity around the storage tank periphery.
The utility model is reasonable in design, because anode bodies radially, with the parallel one to one symmetrical expression feeding circuit of formation between the storage tank bottom plate negative electrode, the similar plate condenser of Electric Field Distribution, has the uniform characteristic of current distribution, the cathodic protection potential that storage tank bottom plate is inside and outside thereby even, the protection potential at storage tank bottom plate middle part can directly be realized by the current potential of monitoring storage tank periphery listrium, avoided under the situation of not changing storage tank bottom plate installing storage tank center reference electrode difficulty high with " IR falls " measured error can not be excessive problem; Be provided with the electrical fitting that constitutes the current shielding effect, the ordinary production that construction does not influence jar does not need the lightning protection anti electrostatic ground system of storage tank is transformed, and also not needing insulate to isolate to all pipelines of storage tank transforms; Constitute the earthing potential equilibrium activity around being embedded with the zinc band storage tank week.This device easy construction, safety, current distribution are even; can realize need not electric insulating such as insulated flange isolates modification measures and just can carry out independently impressed current cathodic protection to single storage tank; can not produce and disturb, successfully solve conventional cathodic protection system and be difficult to reach the difficult problem of qualified cathode protection in up to the environment more than the 500 Ω m at storage tank district soil resistivity to other storage tank or equipment.
Description of drawings
Fig. 1 is the structural representation of this device;
Fig. 2 is the upright to scheme drawing of this device;
Fig. 3 is the constructional drawing of anode bodies.
The specific embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, this device comprises potentiostat [4], anode bodies [2], the quantity of anode bodies [2] can be provided with as required, be shown as six among Fig. 1, be connected with the anode output end of potentiometer [4] by lead-in wire [3] respectively, anode bodies [2] is radially outward radial, and symmetry, on even keel are installed in the beneath side of storage tank [1].The texture ratio of anode bodies [2] is more special, and it comprises hollow steel pipe [8], and permanent anode bar [10] is installed in the steel pipe [8], and the cavity between anode bar [10] and steel pipe [8] inwall is filled with conductive material obturator [9].
Because the storage tank district is made up of a plurality of storage tanks usually, and mutually by connecting as pipeline etc., do not influence the ordinary production of storage tank during for the assurance construction, do not need the lightning protection anti electrostatic ground system and the isolation of all piping insulations of storage tank are transformed, be provided with the circuit [7] that constitutes the current shielding effect and connect on this device, this circuit [7] is with reinforcing bar body [6] in the tank foundation fine strain of millet and storage tank [1] bottom plate connecting.
In addition; because the protection potential at storage tank [1] base plate middle part can directly be realized by the current potential of monitoring storage tank periphery listrium; avoid under the situation of not changing storage tank bottom plate installing storage tank center reference electrode difficulty high and because of the possible excessive problem that does not detect true protection potential of " IR falls " measured error; be provided with ring-type zinc band [5] in periphery around storage tank [1]; its quantity can be decided as required; can be two, three, in addition more, and the diameter difference.During installation, ring-type zinc band [5] is concentric with storage tank [1], and is embedded in undergroundly, has and constitutes the earthing potential equilibrium activity, sees Fig. 1, Fig. 2.This device is fit to storage tank district soil resistivity up to using in the environment more than the 500 Ω m, and through on probation, effect is quite desirable.
Claims (3)
1, cathodic protector outside a kind of bottom plate of crude oil tank; comprise potentiostat [4], anode bodies [2]; anode bodies [2] is connected with the anode output end of potentiostat [4] by lead-in wire [3], and the side is equiped with three anode bodies [2] at least under its feature storage tank [1], arranges with the radial radiation shape.
2, cathodic protector according to claim 1 is characterized in that anode bodies [2] comprises hollow steel pipe [8], permanent anode bar [10] is installed in the steel pipe [8], and is filled with conductive material obturator [9].
3, cathodic protector according to claim 1 is characterized in that anode bodies [2] symmetry, on even keel are located at the beneath side of storage tank [1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420103676 CN2753693Y (en) | 2004-12-31 | 2004-12-31 | Crude oil storage tank bottom plate external cathode protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420103676 CN2753693Y (en) | 2004-12-31 | 2004-12-31 | Crude oil storage tank bottom plate external cathode protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2753693Y true CN2753693Y (en) | 2006-01-25 |
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ID=35925800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420103676 Expired - Fee Related CN2753693Y (en) | 2004-12-31 | 2004-12-31 | Crude oil storage tank bottom plate external cathode protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2753693Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534625A (en) * | 2012-01-09 | 2012-07-04 | 嘉兴信元精密模具科技有限公司 | Cathode protection method for electroplating auto injection plates |
| CN103469213A (en) * | 2013-08-30 | 2013-12-25 | 青岛双瑞海洋环境工程股份有限公司 | Outer bottom cathode protection system of storage tank based on laminal zinc alloy anode |
| CN110257831A (en) * | 2019-07-24 | 2019-09-20 | 青岛雅合科技发展有限公司 | Storage tank impressed current cathodic protection control method |
| CN110923723A (en) * | 2019-12-31 | 2020-03-27 | 贵州电网有限责任公司 | Intelligent anticorrosion system and anticorrosion method for transformer substation grounding device |
| CN112326930A (en) * | 2020-11-05 | 2021-02-05 | 贵州电网有限责任公司 | Anticorrosive monitoring devices of transformer substation's ground net |
-
2004
- 2004-12-31 CN CN 200420103676 patent/CN2753693Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534625A (en) * | 2012-01-09 | 2012-07-04 | 嘉兴信元精密模具科技有限公司 | Cathode protection method for electroplating auto injection plates |
| CN103469213A (en) * | 2013-08-30 | 2013-12-25 | 青岛双瑞海洋环境工程股份有限公司 | Outer bottom cathode protection system of storage tank based on laminal zinc alloy anode |
| CN103469213B (en) * | 2013-08-30 | 2015-08-05 | 青岛双瑞海洋环境工程股份有限公司 | Based on the storage tank outer bottom cathodic protection system of lamellar zinc alloy anode |
| CN110257831A (en) * | 2019-07-24 | 2019-09-20 | 青岛雅合科技发展有限公司 | Storage tank impressed current cathodic protection control method |
| CN110923723A (en) * | 2019-12-31 | 2020-03-27 | 贵州电网有限责任公司 | Intelligent anticorrosion system and anticorrosion method for transformer substation grounding device |
| CN112326930A (en) * | 2020-11-05 | 2021-02-05 | 贵州电网有限责任公司 | Anticorrosive monitoring devices of transformer substation's ground net |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060125 Termination date: 20111231 |