CN203007423U - Storage tank outer bottom plate cathode protection device - Google Patents
Storage tank outer bottom plate cathode protection device Download PDFInfo
- Publication number
- CN203007423U CN203007423U CN 201220703282 CN201220703282U CN203007423U CN 203007423 U CN203007423 U CN 203007423U CN 201220703282 CN201220703282 CN 201220703282 CN 201220703282 U CN201220703282 U CN 201220703282U CN 203007423 U CN203007423 U CN 203007423U
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- reference electrode
- auxiliary cathode
- bottom plate
- cathode plate
- tank bottom
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model provides a storage tank outer bottom plate cathode protection device. The storage tank outer bottom plate cathode protection device is mainly composed of a storage tank outer bottom plate, a constant potential rectifier, a reference electrode, an anode net and an auxiliary cathode plate, wherein the reference electrode and the auxiliary cathode plate are fixed together through an insulated connecting piece, a testing electrode is formed by the reference electrode, the insulated connecting piece and the auxiliary cathode plate, the auxiliary cathode plate is connected with the storage tank outer bottom plate through a cable, and meanwhile, the auxiliary cathode plate, the reference electrode and the anode net are respectively connected with the constant potential rectifier through cables. The storage tank outer bottom plate cathode protection device provided by the utility model can establish a fixed testing point for a storage tank, so as to effectively protect the storage tank outer bottom plate.
Description
Technical field
The utility model relates to a kind of cathodic protector, relates in particular to a kind of tank bottom plate cathodic protector of petrochemical industry.
Background technology
In tank bottom plate galvanic protection process; need to carry out the protection potential test by reference electrode; be used for judging whether to have reached the protection requirement, the protection potential value of surveying is also unique parameter that potentiostat is used for automatically controlling the most important and most critical of whole cathodic protection system simultaneously.The correctness of protection potential test is directly connected to cathodic protection system to the effect of corrosion protection of equipment protection.The protection potential test is correct, can make equipment reach protection fully, and the life-span will extend greatly; the protection potential test distortion will cause equipment overprotection or under proteciton; all will lose the galvanic protection effect to equipment, even aggravate equipment corrosion, for enterprise brings about great losses.Therefore in cathode protection technology, it is extremely important that the test of protection potential shows.
Test at present the method for protection potential; that reference electrode is embedded in advance near about 200mm left and right in the sand of basis, storage tank bottom plate test point bottom; record the real potential (more can measure close to more from tank bottom real potential) of approximate tank bottom; reference electrode is drawn outside base plate by cable; access detective pole terminal stud; the effect of detective pole is to be used on the one hand the manual testing, by detective pole, signal is delivered on the other hand the potentiostat of operation room, is used for the automatic control of cathodic protection system.This is the method that extensively adopts at present.Existent defect is at present; one; reference electrode can not be close to the tank Outer Bottom Plating and place; if place like this, can measure the truest protection potential theoretically, but in Practical Project; if electrode is close to base plate to be placed; electrode just must be placed on husky basic unit topmost, if there is no certain thickness husky base as the ionogen conduction current around reference electrode like this, still can't measure protection potential accurately.they are two years old, after storage tank moves for some time, due to setting of ground, tank bottom can produce distortion, some local projection, some place is recessed, the situation of reference electrode top base plate projection also often occurs, at this moment form the space above reference electrode, reference electrode does not detect the base plate real potential equally, cathodic protection system can't normally be moved, lose the galvanic protection effect, storage tank will suffer heavy corrosion, this situation the most easily occurs for large-scale petroleum storing tank especially, because the large-scale storage tank floor space is large, bearer cap is also large, slack tank, base plate bearing capacity unbalanced etc. everywhere in the canful alternation procedure, the capital produces the tank bottom distortion.in order to solve the problem that does not detect correct current potential because of the bottom deformation reference electrode, people have just increased by two standby reference electrodes at base plate bottom different positions at the design initial stage, when just use the another electrode instead when going wrong with reference electrode, although can solve some problems like this, but the storage tank bottom plate distortion is a very long process, when it is found that current potential that electrode is surveyed has problem, may be thing for a long time, storage tank has moved for a long time under incorrect control of Electric potentials, storage tank is also suffering heavy corrosion always, therefore this method is a kind of way of having no idea, it does not fundamentally solve the inaccurate or test of the reference electrode test that causes because of tank bottom distortion less than the problem of current potential, in order to realize large-scale petroleum storing tank long-acting galvanic protection truly, cathodic protection potential testing method and novel test electrode are present problems anxious to be resolved.
The utility model content
Can't be close to tank bottom in order to solve the reference electrode that prior art exists, not detect the truest protection potential and the reference electrode test that causes because of the tank bottom distortion is out of control, the cathodic protection by rectifier system can't normally move technical problem, the utility model provides a kind of tank bottom plate cathodic protector.Device of the present utility model is that storage tank has been set up the fixing test point, can effectively protect tank bottom plate.
The tank bottom plate cathodic protector that the utility model provides mainly is made of tank bottom plate, potentiostat, reference electrode, anode network and auxiliary cathode plate; wherein; reference electrode and auxiliary cathode plate are fixed together by insulated connecting piece; reference electrode, insulated connecting piece and auxiliary cathode plate form test electrode jointly; the auxiliary cathode plate is connected with tank bottom plate by cable, and auxiliary cathode plate, reference electrode are connected cable and are connected with potentiostat respectively with anode network simultaneously.
Described insulated connecting piece is insulation thimble with holes, reference electrode and auxiliary cathode plate are fixed together by insulation thimble with holes, keeping auxiliary cathode plate and reference electrode measuring head distance between the two is 10-100mm, the material of auxiliary cathode plate is identical with storage tank tank body material, insulation thimble both ends open with holes, perforate on tube wall.Certainly reference electrode can adopt other insulated connecting piece with being fixedly connected with also of auxiliary cathode plate, such as insulation support plate, reference electrode and auxiliary cathode plate can be fixed on the two ends of insulation support plate, the distance that maintenance is fixed.The material of insulated connecting piece can be plastics, pottery and other non-conductor material.
In order further to improve the electroconductibility between reference electrode and auxiliary cathode plate, the reference electrode that is fixed together and auxiliary cathode plate are wrapped in cloth bag, fill stopping composition in cloth bag, stopping composition enters in insulation thimble with holes by the perforate on insulation thimble tube wall with holes, thereby reference electrode and auxiliary cathode plate are embedded in stopping composition.
Employing the utlity model has following beneficial effect:
Oil tank is after operation for some time; the tank bottom distortion is generally unavoidable situation; if deformation point is just in time in reference electrode test place; cause that thus cathodic protection system lost efficacy, usual unique way is exactly shut-down maintenance, tank bottom is cut away change new tank bottom; thereby recovering cathodic protection system normally moves; although this method is feasible, drop into quite huge, for enterprise causes unnecessary financial loss.In device of the present utility model; an auxiliary cathode plate is installed as storage tank subtest point on reference electrode; for measuring the most real cathodic protection potential; the distance of auxiliary cathode plate and reference electrode is fixed; and close proximity can keep reference electrode measuring head and auxiliary cathode plate distance to immobilize.Due to the auxiliary cathode plate and tank bottom idiostatic; when the tank bottom deformation projections, it is constant with the distance of electrode that the auxiliary cathode plate still keeps, though at this moment do not detect the current potential of tank bottom; but can test the protection potential of auxiliary cathode plate, also just be equal to the current potential of tank bottom.Therefore by this device, not only can measure the most real cathodic protection potential, and when the tank bottom deformation projections; can not cause that cathodic protection system lost efficacy yet; needn't shut-down maintenance, thus the massive losses that reduces huge maintenance cost and stop work and cause, extension device protection life-span simultaneously.
Description of drawings
Fig. 1 is the structural representation of tank bottom plate cathodic protector of the present utility model;
Fig. 2 is the structural representation of test electrode in Fig. 1.
In figure, 1-storage tank, 2-tank bottom plate, the 3-anode network, 4-test electrode, 5-link box, the 6-potentiostat, 7-cloth bag, 8-stopping composition, 9-auxiliary cathode plate, 10-insulation thimble with holes, 11-reference electrode, 12-reference electrode cable, 13-auxiliary cathode plate cable, 14-ground level, the 15-storage tank is installed the basis, and 16-is out of shape raised points, the space after the 17-distortion.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of tank bottom plate cathodic protector of the present utility model.As shown in the figure, tank bottom plate cathodic protector of the present utility model mainly is made of tank bottom plate 2, potentiostat 6, test electrode 4 and anode network 3.Storage tank 1 is installed on storage tank and installs on basis 15, and anode network 3 is embedded in the Sha Jizhong of storage tank 1 bottom, and anode network 3 is 200-400mm apart from the distance of ground level 14.Test electrode 4 comprises auxiliary cathode plate 9, insulation thimble with holes 10 and reference electrode 11 (seeing Fig. 2).Auxiliary cathode plate 9 is connected with potentiostat with tank bottom plate 2 respectively through link box 5 by auxiliary cathode plate cable 13 and is connected, reference electrode 11 is connected with potentiostat 6 through link box 5 by reference electrode cable 12, and anode network 3 is connected with potentiostat 6 through link box 5 by cable.
As shown in Figure 2, auxiliary cathode plate 9 and reference electrode 11 are individually fixed in the two ends of insulation thimble 10 with holes, auxiliary cathode plate 9 and reference electrode 11 distance between the two are 10-100mm, the material of auxiliary cathode plate 9 is identical with storage tank tank body material, insulation thimble 10 both ends opens with holes, perforate on tube wall.In order further to improve the electroconductibility between reference electrode 9 and auxiliary cathode plate 11, the reference electrode 11 that is fixed together and auxiliary cathode plate 9 are wrapped in cloth bag 7, fill stopping composition 8 in cloth bag 7, stopping composition 8 enters in insulation thimble by the perforate on insulation thimble 10 tube walls with holes, thereby reference electrode 11 and auxiliary cathode plate 9 are embedded in stopping composition 8.Certainly reference electrode 9 can adopt other insulated connecting piece with being fixedly connected with also of auxiliary cathode plate 11, such as insulation support plate, reference electrode 9 and auxiliary cathode plate 11 can be fixed on the two ends of insulation support plate, keeps fixing distance.
As depicted in figs. 1 and 2; in use test electrode 4 of the present utility model is embedded in advance in the husky basic 100-200mm degree of depth in storage tank 1 bottom; between the auxiliary cathode plate 9 of test electrode 4 and reference electrode 11, distance is very near, is 10-100mm, to guarantee to measure the most real cathodic protection potential.When tank bottom distortion raised points 16 deformation projections; forming the space 17 after the distortion between tank bottom plate 2 and test electrode 4; though at this moment do not detect the current potential of tank bottom plate 2; but because the distance of auxiliary cathode plate 9 with reference electrode 11 remains unchanged; still can test the protection potential of auxiliary cathode plate 9; because auxiliary cathode plate 9 and tank bottom plate 2 are idiostatic; and be in same edatope with tank bottom plate 2, so measure the current potential that the current potential of auxiliary cathode plate 9 just is equal to tank bottom plate 2.Therefore by the utility model, not only can measure the most real cathodic protection potential, and when the tank bottom plate deformation projections, can not produce test potential abnormal, still can keep cathodic protection system normally to move.
Claims (6)
1. tank bottom plate cathodic protector; it is characterized in that; mainly consisted of by tank bottom plate, potentiostat, reference electrode, anode network and auxiliary cathode plate; reference electrode and auxiliary cathode plate are fixed together by insulated connecting piece; reference electrode, insulated connecting piece and auxiliary cathode plate form test electrode jointly; the auxiliary cathode plate is connected with tank bottom plate by cable, and auxiliary cathode plate, reference electrode are connected cable and are connected with potentiostat respectively with anode network simultaneously.
2. tank bottom plate cathodic protector according to claim 1; it is characterized in that; described insulated connecting piece is insulation thimble with holes; the insulation thimble both ends open; perforate on tube wall; reference electrode and auxiliary cathode plate are fixed together by insulation thimble with holes, and auxiliary cathode plate and reference electrode measuring head distance between the two are 10-100mm.
3. tank bottom plate cathodic protector according to claim 2; it is characterized in that; the described reference electrode that is fixed together and auxiliary cathode plate are wrapped in cloth bag; fill stopping composition in cloth bag; stopping composition enters in insulation thimble with holes by the perforate on insulation thimble tube wall with holes, thereby reference electrode and auxiliary cathode plate are embedded in stopping composition.
4. tank bottom plate cathodic protector according to claim 1, is characterized in that, the material of described auxiliary cathode plate is identical with storage tank tank body material.
5. tank bottom plate cathodic protector according to claim 1, is characterized in that, described insulated connecting piece is insulation support plate.
6. according to claim 1-5 described any tank bottom plate cathodic protectors, is characterized in that, the material of described insulated connecting piece is plastics or pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703282 CN203007423U (en) | 2012-12-11 | 2012-12-11 | Storage tank outer bottom plate cathode protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703282 CN203007423U (en) | 2012-12-11 | 2012-12-11 | Storage tank outer bottom plate cathode protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203007423U true CN203007423U (en) | 2013-06-19 |
Family
ID=48599035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220703282 Expired - Lifetime CN203007423U (en) | 2012-12-11 | 2012-12-11 | Storage tank outer bottom plate cathode protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203007423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780015A (en) * | 2016-04-28 | 2016-07-20 | 天津隆顺技术服务有限公司 | Compound impressed current cathodic protection system |
-
2012
- 2012-12-11 CN CN 201220703282 patent/CN203007423U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780015A (en) * | 2016-04-28 | 2016-07-20 | 天津隆顺技术服务有限公司 | Compound impressed current cathodic protection system |
| CN105780015B (en) * | 2016-04-28 | 2018-05-11 | 天津隆顺技术服务有限公司 | A kind of compound impressed current cathodic protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |