CN202047133U - Shielding-preventing cathodic protection system - Google Patents
Shielding-preventing cathodic protection system Download PDFInfo
- Publication number
- CN202047133U CN202047133U CN2010205621138U CN201020562113U CN202047133U CN 202047133 U CN202047133 U CN 202047133U CN 2010205621138 U CN2010205621138 U CN 2010205621138U CN 201020562113 U CN201020562113 U CN 201020562113U CN 202047133 U CN202047133 U CN 202047133U
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- China
- Prior art keywords
- cathodic protection
- steel structure
- conductive layer
- preservative coat
- protection
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Abstract
The utility model relates to a shielding-preventing cathodic protection system. Based on the conventional cathodic protection system, a conductive layer is additionally arranged out of a steel structure anticorrosive layer with cathodic protection; the conductive layer is electrically connected with an electricity receiving body through a conducting cable; the electricity receiving body is applied to the position where cathodic protection current is not shielded to receive the cathodic protection current; and the cathodic protection current is transmitted out of the steel structure anticorrosive layer by going around a shielding object through the conducting cable, so that the steel structures with cathodic protection is prevented from being corroded by cathode shielding.
Description
Technical field
The utility model relates to a kind of anti-shielded cathode securing system, especially can walk around shield and the cathodic protection current at unshielded place is caused the outer anti-shielded cathode securing system of protected steel structure preservative coat.
Background technology
At present, the cathodic protection system of known steel structure has two classes, that is: impressed current cathodic protection system and galvanic anode protection system.The impressed current cathodic protection system is to be electrically connected in turn and to be constituted by object of protection steel structure, cathode cable, impressed current galvanic protection power supply, anode cable, supplementary anode; The galvanic anode protection system is to be electrically connected in turn and to be constituted by object of protection steel structure, sacrificial anode cable, sacrificial anode.No matter impressed current cathodic protection system or galvanic anode protection system, the steel structure under it all is with outward in the preservative coat and the soil that is laid in or in the water.When there is defective in the preservative coat of steel structure; cathodic protection system lays the loop that electrolytic solution in the environment forms cathodic protection current by steel structure; make the steel structure at preservative coat defectiveness place obtain galvanic protection, avoid or slow down the galvanic corrosion of steel structure.
But; in existing cathodic protection system; when existing shield anticathode protective current to hinder between steel structure and supplementary anode or steel structure and the sacrificial anode or shunting; cathodic protection current can not form the loop and make steel structure by cathode screen, make preservative coat exist the steel structure of fault location to can not get effective galvanic protection and produce corrosion.
Summary of the invention
In order to overcome the cathode screen phenomenon of existing cathodic protection system; the utility model provides a kind of anti-shielded cathode securing system; this system can prevent that steel structure in the cathodic protection system from by cathode screen, avoiding the steel structure of preservative coat fault location to corrode.
The technical scheme that the utility model technical solution problem is taked is: in existing cathodic protection system; at steel structure preservative coat peripheral hardware conductive layer; conductive layer is electrically connected with being subjected to electric body by conducting cable; be subjected to the electric body cathodic protection current that is laid in not accept cathodic protection current in the position of conductively-closed, walk around shield by conducting cable then and be transferred to outside the steel structure preservative coat.When there is defective in the preservative coat of steel structure,, reach the purpose of avoiding steel structure to be corroded because of cathode screen by being subjected to electric body to form the galvanic protection loop by the cathodic protection current that conducting cable is transferred to the preservative coat outer conducting layer.
The beneficial effects of the utility model are to have avoided galvanic protection object steel structure to be produced galvanic corrosion by cathode screen; Make original galvanic protection object can only be laid in the limitation of underground, underwater environment and expand to and to be in the gas, enlarged the Application on Cathode Protection scope greatly; Anti-shielding harness is simple.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the anti-shielded cathode securing system schematic diagram of the utility model impressed current.
Fig. 2 is the anti-shielded cathode securing system schematic diagram of the utility model sacrificial anode.
Fig. 3 is the anti-shielded cathode securing system first example structure schematic diagram.
Fig. 4 is the anti-shielded cathode securing system second example structure schematic diagram.
Fig. 5 is anti-shielded cathode securing system the 3rd example structure schematic diagram.
Fig. 6 is anti-shielded cathode securing system the 4th example structure schematic diagram.
Fig. 7 is anti-shielded cathode securing system the 5th example structure schematic diagram.
1. steel structures among the figure, 2. preservative coat, 3. conductive layer; 4. galvanic protection energising cable, 5. impressed current galvanic protection power supply, 6. anode cable; 7. supplementary anode, 8. shielding, 9. conducting cable; 10. be subjected to electric body; 11. sacrificial anode, 12. protective layers, 13. thermal insulation layers; 14. heat-insulating protective layer, 15. sleeve pipes.
Embodiment
Impressed current in Fig. 1 is prevented the shielded cathode securing system; applied the steel structure (1) of galvanic protection and band preservative coat (2); galvanic protection energising cable (4); impressed current galvanic protection power supply (5.); anode cable (6); supplementary anode (7) is electrically connected in turn; at preservative coat (2) peripheral hardware conductive layer (3); conductive layer (3) is electrically connected with being subjected to electric body (10) by conducting cable (9); cathodic protection current is accepted in the position that is subjected to electric body (10) to be embedded in not conductively-closed of cathodic protection current, walks around shielding (8) by conducting cable (9) then and cathodic protection current is transferred to is subjected to electric body (10).Galvanic protection energising cable (4) in the anti-shielded cathode securing system of impressed current promptly is a cathode cable.
When be embedded between steel structure (1) and the interfering source by electric body (10) and it is when having enough sizes and suitable shape, then be subjected to electric body (10) both to can be used as anti-tampering shield and make steel structure (1) avoid the interference in the source of being interfered, still have the dual-use function of walking around target shielding (8) and avoiding cathode screen simultaneously.
Sacrificial anode in Fig. 2 is prevented the shielded cathode securing system; the steel structure (1) of band preservative coat (2), galvanic protection energising cable (4), sacrificial anode (11) are electrically connected in turn; at preservative coat (2) peripheral hardware conductive layer (3); conductive layer (3) is electrically connected with being subjected to electric body (10) by conducting cable (9); be subjected to electric body (10) to walk around shielding (8) and lay, thereby not conductively-closed and be easy to accept cathodic protection current.Galvanic protection energising cable (4) in the anti-shielded cathode securing system of sacrificial anode promptly is the sacrificial anode cable.
Shown in Figure 3 is the anti-shielded cathode protection of steel pipe embodiment, and steel structure shown in Fig. 3 (1) is a steel pipe, and galvanic protection energising cable (4) is electrically connected with steel pipe, and steel pipe is applied galvanic protection; It is preservative coat (2), conductive layer (3) and protective layer (12) that steel pipe is disposed with outward, and protective layer (12) carries out mechanical protection to conductive layer (3); Be electrically connected with conductive layer (3) by conducting cable (9) by electric body (10), avoid steel pipe by cathode screen.
In the present embodiment, preservative coat (2), conductive layer (3) and protective layer (12) outside the steel pipe are when carrying out processing and manufacturing, the composite band material that can preprocess be fabricated to preservative coat (2), conductive layer (3) and protective layer (12) three laminated carries out the winding construction of three layers of composite band material then to steel pipe; Perhaps preprocess is fabricated to the composite band material of conductive layer (3) and protective layer (12) two laminated, then earlier to the prefabricated preservative coat of steel pipe (2), carries out the winding construction of two layers of composite band material again.
Shown in Figure 4 is steel pipe discrepancy ground or the anti-shielding embodiment that goes out the upstream face section, and steel structure shown in Fig. 4 (1) is a steel pipe, and galvanic protection energising cable (4) is electrically connected with steel pipe, and steel pipe is applied galvanic protection; Steel pipe is disposed with preservative coat (2), conductive layer (3) and protective layer (12) outward, and protective layer (12) carries out mechanical protection to conductive layer (3); Is electrically connected with conductive layer (3) by conducting cable (9) by electric body (10), can avoid underground simultaneously and the ground or under water with the ground steel pipe by cathode screen.
Shown in Figure 5 is the anti-shielding of adiabatic steel pipe embodiment, the steel structure (1) that has applied galvanic protection by galvanic protection energising cable (4) energising shown in Fig. 5 is the steel pipe of adiabatic heat-insulation or cold insulation, steel pipe, preservative coat (2), conductive layer (3), thermal insulation layer (13), heat-insulating protective layer (14) by in the pipe outside managing direction set gradually; Be subjected to electric body (10) by conducting cable (9) pass heat-insulating protective layer (14), thermal insulation layer (13) is electrically connected with conductive layer (3), to avoid thermal insulation layer (13) and heat-insulating protective layer (14) steel pipe is formed cathode screen.
Shown in Figure 6 is to have to pass through the anti-shielding of telescopic steel pipe embodiment, steel structure shown in Fig. 6 (1) is a steel pipe, steel pipe is with the sleeve pipe (15) of road crossing or railway outward, and galvanic protection energising cable (4) is electrically connected with steel pipe, and steel pipe is applied galvanic protection; Steel pipe, preservative coat (2), conductive layer (3), protective layer (12) by in the pipe outside managing direction set gradually; Be subjected to electric body (10) to walk around shield sleeve pipe (15) and be electrically connected, steel pipe is formed cathode screen to avoid sleeve pipe (15) with conductive layer (3) by conducting cable (9).
Shown in Figure 7 is the anti-shielding of steel storage tank bottom plate embodiment, and steel structure shown in Fig. 7 (1) is a steel storage tank bottom plate, and galvanic protection energising cable (4) is electrically connected with storage tank bottom plate it is applied galvanic protection; The supplementary anode (7) that anode cable (6) connects places at the bottom of the steel storage tank; Be lined with the preservative coat (2) as insulating blanket under the steel storage tank bottom plate, preservative coat (2) has conductive layer (3), be electrically connected with conductive layer (3) by conducting cable (9) by electric body (10), to avoid steel storage tank bottom plate by cathode screen.
Claims (5)
1. anti-shielded cathode securing system; cathodic protection system and applied galvanic protection and the band preservative coat steel structure; it is characterized in that: at steel structure preservative coat peripheral hardware conductive layer; conductive layer is electrically connected with being subjected to electric body by conducting cable, is subjected to the be laid in position of not conductively-closed of cathodic protection current of electric body.
2. anti-shielded cathode securing system according to claim 1 is characterized in that: applying the cathodic protection system of galvanic protection on the steel structure of band preservative coat, is impressed current cathodic protection system or galvanic anode protection system.
3. anti-shielded cathode securing system according to claim 1 is characterized in that: the conductive layer under it is set up protective layer outward or is not set up protective layer.
4. anti-shielded cathode securing system according to claim 1 is characterized in that: be subjected to electric body to can be used as anti-tampering shield, and this anti-tampering shield places between steel structure and the interfering source.
5. anti-shielded cathode securing system according to claim 1 is characterized in that: outside the steel structure of band preservative coat under it when heat insulating construction is arranged, steel pipe, preservative coat, conductive layer, thermal insulation layer, heat-insulating protective layer by in the pipe outside managing hierarchal arrangement successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205621138U CN202047133U (en) | 2010-10-15 | 2010-10-15 | Shielding-preventing cathodic protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205621138U CN202047133U (en) | 2010-10-15 | 2010-10-15 | Shielding-preventing cathodic protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047133U true CN202047133U (en) | 2011-11-23 |
Family
ID=44987450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205621138U Expired - Fee Related CN202047133U (en) | 2010-10-15 | 2010-10-15 | Shielding-preventing cathodic protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775399A (en) * | 2022-04-13 | 2022-07-22 | 邓康伟 | Fabricated steel bridge and construction method thereof |
-
2010
- 2010-10-15 CN CN2010205621138U patent/CN202047133U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775399A (en) * | 2022-04-13 | 2022-07-22 | 邓康伟 | Fabricated steel bridge and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20141015 |
|
| EXPY | Termination of patent right or utility model |