CN201141040Y - Monitoring device for emitted current of ocean platform sacrificial anode - Google Patents
Monitoring device for emitted current of ocean platform sacrificial anode Download PDFInfo
- Publication number
- CN201141040Y CN201141040Y CNU2007201737858U CN200720173785U CN201141040Y CN 201141040 Y CN201141040 Y CN 201141040Y CN U2007201737858 U CNU2007201737858 U CN U2007201737858U CN 200720173785 U CN200720173785 U CN 200720173785U CN 201141040 Y CN201141040 Y CN 201141040Y
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- monitoring device
- anode
- flanged discs
- sacrificial anode
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Abstract
The utility model relates to a monitoring device for monitoring current sent by an offshore platform sacrificial anode, which comprises an anode with two extension ends respectively welded together with connecting pipes of metal flanged discs, another two flanged discs which are welded on the offshore platform by connecting pipes are mounted on the offshore platform serving as a cathode corresponding to the former two flanged discs, an insulating strip is disposed between each pair of the two flanged discs, a plurality of mounting holes are arranged on each pair of the flanged discs correspondingly, an insulation cover is disposed in each pair of the mounting holes, and an insulating spacer and a steel washer are respectively arranged on the outer ends of each pair of the flanged discs. After a bolt penetrates through each pair of the flanged discs and the insulation cover, the bolt is fastened by a nut. The two ends of a standard resistor with ultra-low resistance and high accuracy are connected electrically with two insulated flanged discs respectively. The utility model monitors current sent out by the anode in the whole process within the service life of the anode anytime when the offshore platform is launched. The monitoring device is widely applicable to corrosion protection of steel material.
Description
Technical field
The utility model relates to a kind of monitoring device, particularly about a kind of monitoring device of sea platform sacrificial anode generation current flow.
Background technology
In marine petroleum exploitation, ocean platform generally all is to adopt ferrous materials, and seawater has very strong corrodibility to iron and steel.In order to protect iron and steel not to be corroded, generally be it to be protected by the current potential that reduces steel, method commonly used comprises impressed current and sacrificial anode etc., the many of usefulness is the mode that adopts galvanic anode protection.The material of sacrificial anode is generally aluminum base alloy or zinc base alloy, the consumption of sacrificial anode generally is by calculating decision according to design variable, the actual electric current that sends of sacrificial anode is one of them very important design variable on the ocean platform, but owing to there are not the appropriate means of obtaining sacrificial anode generation current, all be to come value basically therefore according to experience all the time.To be on the safe side, span is all more conservative usually, can increase the cost of platform like this, produces bigger waste, and also unfavorable to the protection environment.
Summary of the invention
At the problems referred to above, the purpose of this utility model provide a kind of under the platform water, just can the precise monitoring anode send electric current through the time change and the platform cathodic protection current density through the time variation the monitoring device of sea platform sacrificial anode generation current flow.
For achieving the above object, the utility model is taked following technical scheme: a kind of monitoring device of sea platform sacrificial anode generation current flow, it comprises an anode, described anodic two external parts are integrally welded with the pipe connecting of a metal flange dish respectively, on ocean platform as negative electrode, corresponding with described two ring flanges, be provided with two other and be welded on ring flange on the ocean platform by pipe connecting, each is to being provided with an insulating trip between described two ring flanges, correspondence is provided with some open holess on every pair of described ring flange, place an insulation covering at each in to described open holes, in the outer end of described every pair of ring flange one insulation spacer and a Steel Washer are set respectively, after one bolt passed described every pair of ring flange and insulation covering, with bolted, the two ends of the standard resistance of a high precision super-low resistance are connected insulated two ring flanges respectively with a nut.
The resistance of described standard resistance is 1m Ω～10m Ω.
Described insulating trip, insulation covering and insulation spacer are taked a kind of material in urethane or the tetrafluoroethylene, and its thickness is not less than 4mm.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is owing to be provided with insulating trip at connection anodic ring flange and connection between the ring flange as the ocean platform of negative electrode, when two ring flanges connect, adopt insulation covering and insulation spacer etc. to insulate and be connected; With the standard resistance of a high precision super-low resistance, be connected on insulated two ring flanges simultaneously, the therefore voltage change at monitoring resistor two ends at any time, and understand the electric current that anode sends at any time by Ohm's law, realize the utility model purpose.2, the utility model is owing to can understand the electric current variation that anode sends at any time, and then acquisition is as the polarization process of the ocean platform of negative electrode and the comprehensive complete information of steady state, therefore can simplify the work of ocean platform conventional sense, reduce the workload of ocean platform annual test and special inspection.3, the utility model has solved the not difficult problem of energy measurement sacrificial anode generation current of prior art; water under the ocean platform; just can monitor at any time whole process in the anode cycle in work-ing life through the time send electric current; thereby obtain the working condition of cathodic protection system, for production, cathodic Protection Design optimization and research provide first-hand field data comprehensively.The utility model can be widely used in the corrosion prevention of immersing the ferrous materials in the seawater.
Description of drawings
Fig. 1 is that the utility model anode sends the current monitoring device synoptic diagram
Fig. 2 is the schematic side view of Fig. 1
Fig. 3 is the utility model isolated flange synoptic diagram
Fig. 4 is the isolated flange connection diagram of Fig. 3 in the A-A direction
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1 and Figure 2, the utility model comprises an anode 1, two external parts of anode 1 are integrally welded with the pipe connecting 3 of a metal flange dish 2 respectively, corresponding with two ring flanges 2, also being provided with two ring flanges, 5, two ring flanges 5 on the ocean platform 4 as negative electrode is welded on the ocean platform 4 by two pipe connectings 6.Between each corresponding two ring flange 2,5 that are provided with an insulating trip 7 is set.
As shown in Figure 3, Figure 4, correspondence is provided with some open holess 8 on two pairs of corresponding ring flanges 2,5 that are provided with, in each open holes 8, place an insulation covering 9, one insulation spacer 10 and a Steel Washer 11 are set respectively in the outer end of two ring flanges 2,5, after one bolt 12 passed ring flange 2, insulation covering 9 and another ring flange 5, bolt 12 is fastening with a nut 13.
As shown in Figure 1, the two ends of the standard resistance 14 of one high precision super-low resistance are connected electrically in respectively on insulated two ring flanges 2,5, by the voltage at the accurate measurement standard resistance of voltage measuring apparatus 14 two ends, adopt Ohm's law can try to achieve the electric current that sends of the anode of surveying 1.For example: the resistance that measures standard resistance 14 is 0.005226 Ω, and recording its both end voltage is 34.6mV, and can calculating anode 1 according to Ohm's law, to send electric current be 6.62A.
In the foregoing description, the resistance of standard resistance 14 can be selected according to practical situation, generally selects resistance Rs=1m Ω～10m Ω for use, and relative error 0.5%, voltage measurement scope are 1mV～10mV, error 0.01mV, and input resistance is not less than 10
9Ω.The standard resistance 14 that the utility model uses requires both end voltage measuring accuracy height, can not influence the works better of anode 1, to stand the strenuous vibration that ocean platform is installed, must works better at ocean platform life period (common 20 years).
In the foregoing description, insulating trip 7, insulation covering 9 and insulation spacer 10 can be taked urethane or tetrafluoroethylene, and thickness is not less than 4mm, to guarantee insulation effect.
Claims (3)
1, a kind of monitoring device of sea platform sacrificial anode generation current flow, it is characterized in that: it comprises an anode, described anodic two external parts are integrally welded with the pipe connecting of a metal flange dish respectively, corresponding with described two ring flanges, on ocean platform as negative electrode, be provided with two other and be welded on ring flange on the ocean platform by pipe connecting, each is to being provided with an insulating trip between described two ring flanges, correspondence is provided with some open holess on every pair of described ring flange, place an insulation covering at each in to described open holes, in the outer end of described every pair of ring flange one insulation spacer and a Steel Washer are set respectively, after one bolt passed described every pair of ring flange and insulation covering, with bolted, the two ends of the standard resistance of a high precision super-low resistance are electrically connected insulated two ring flanges respectively with a nut.
2, the monitoring device of a kind of sea platform sacrificial anode generation current flow as claimed in claim 1 is characterized in that: the resistance of described standard resistance is 1m Ω～10m Ω.
3, the monitoring device of a kind of sea platform sacrificial anode generation current flow as claimed in claim 1 or 2 is characterized in that: described insulating trip, insulation covering and insulation spacer are taked a kind of material in urethane or the tetrafluoroethylene, and its thickness is not less than 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201737858U CN201141040Y (en) | 2007-10-24 | 2007-10-24 | Monitoring device for emitted current of ocean platform sacrificial anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201737858U CN201141040Y (en) | 2007-10-24 | 2007-10-24 | Monitoring device for emitted current of ocean platform sacrificial anode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141040Y true CN201141040Y (en) | 2008-10-29 |
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ID=40068753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201737858U Expired - Lifetime CN201141040Y (en) | 2007-10-24 | 2007-10-24 | Monitoring device for emitted current of ocean platform sacrificial anode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141040Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155099A (en) * | 2020-02-14 | 2020-05-15 | 大连科迈尔防腐科技有限公司 | Current monitoring probe for sacrificial anode of ocean platform |
-
2007
- 2007-10-24 CN CNU2007201737858U patent/CN201141040Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155099A (en) * | 2020-02-14 | 2020-05-15 | 大连科迈尔防腐科技有限公司 | Current monitoring probe for sacrificial anode of ocean platform |
| CN111155099B (en) * | 2020-02-14 | 2022-07-26 | 大连科迈尔防腐科技有限公司 | Current monitoring probe for sacrificial anode of ocean platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081029 |
|
| CX01 | Expiry of patent term |