CN203639561U - Corrosion prevention system offshore of wind turbine generator base - Google Patents
Corrosion prevention system offshore of wind turbine generator base Download PDFInfo
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- CN203639561U CN203639561U CN201320890109.8U CN201320890109U CN203639561U CN 203639561 U CN203639561 U CN 203639561U CN 201320890109 U CN201320890109 U CN 201320890109U CN 203639561 U CN203639561 U CN 203639561U
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Abstract
The utility model discloses a corrosion prevention system of an offshore wind turbine generator base. The corrosion prevention system comprises a direct-current power supply, auxiliary anodes, reference electrodes, an electric control system, a junction box and a cable, wherein the four auxiliary anodes are respectively arranged on three inclined supports and a central steel tube of the wind turbine generator base; two of the three reference electrodes are arranged on the rear parts of the auxiliary anodes, and the other reference electrode is arranged at the furthest end of the wind turbine generator base; an output anode and an output cathode of the electric control system are respectively connected with the auxiliary anodes and the wind turbine generator base by the junction box; the other output end of the electric control system is connected with the reference electrodes. The corrosion prevention system disclosed by the utility model is simple in structure, small in number of installed anodes, very low in additional weight and small in resistance on water, so that water dynamic load of the wind turbine generator base is reduced. The corrosion prevention system disclosed by the utility model is not needed to be corroded and dissolved by extra metals with low electric potential, so that positive ions are not released in seawater, and therefore, pollution on marine environment is avoided.
Description
Technical field
The utility model belongs to the aseptic technic of wind power generating set, particularly the preservative system on a kind of offshore wind farm unit basis.
Background technology
Offshore wind farm has aboundresources, and generating utilizes hour high, not land occupation, and the feature of and suitable large-scale development near apart from power load center, is the up-to-date forward position of global Wind Power Development.The cost of marine wind electric field is about the twice of land wind-powered electricity generation.Structure and the maintenance cost of offshore wind farm are higher, and in its foundation structure, the steel construction in seawater accounts for very large proportion, and steel construction very easily corrosion occurs in seawater and corrosion is very serious, is one of content of offshore wind farm primary study.
Seawater saltness is high, is a kind of very strong corrosive medium, when metallic substance and contact with sea water, can form numerous small galvanic cell and cause corrosion of metal, and find in actual applications, the flow velocity difference of seawater, they are also different to the corrosion speed of metallic substance.Concerning general carbon steel, flow velocity is high, corrode heavier, flow velocity is little, corrosion is lighter, if so effective anticorrosive measure is not taked in offshore wind farm unit basis, will there is very serious corrosion in offshore wind farm unit basis, in seawater, topmost erosion pattern is galvanic corrosion, reaction can significantly reduce the intensity of metallic substance, the mechanical property such as plasticity and toughness, and the local corrosion speed of steel construction in ocean environment is much larger than average corrosion rate, this local corrosion can cause structure erosion perforation or stress concentration, become the potential safety hazard of offshore wind farm unit safety operation, thereby can shorten the service life of wind-powered electricity generation unit, increase the expense of unit maintenance and maintenance.
The corrosionproof protection on offshore wind farm unit basis mainly adopts coating protection and two kinds of modes of galvanic anode protection at present.The effect of coating is mainly physical barrier effect, metallic matrix is separated with external environment, thereby avoid the effect of metal and surrounding environment.But it still has two kinds of reasons can cause metallic corrosion.The one, itself there is defect in coating, has the existence of pin hole; The 2nd, in construction and operational process, inevitable coating can be destroyed, and makes metal exposed in corrosive environment.The existence of these defects causes the phenomenon of large negative electrode primary anode, and the corrosion of coating damage place is accelerated.And the work-ing life that coating can guarantee can not exceed 5 years, after this, can not again brush repairing to the steel construction under seawater and under sea bed.
Traditional galvanic anode protection is that metal or alloy and the protected galvanic protection material metal also born than claimed metal with a kind of current potential are electrically connected, and the metal electric current that constantly corrosion dissolution produces that relies on current potential relatively to bear is protected other metals.In seawater steel construction, general adopted anode metal alloy is aluminium, zinc and magnesium.These metal alloys pass through to sacrifice oneself, thereby reach the object of protection steel construction.For general offshore wind farm unit; the life of blower fan all can be more than 25 years; in order to protect single-leg type or the three leg formula wind-powered electricity generation units long time like this in seawater; before the group of motors of keeping watch is installed in seawater; number must be welded on the basis of wind-powered electricity generation unit in advance with the sacrificial anode of hundred tons; with regard to starting material and manpower, this will be very expensive.Owing to can only sending frogman to carry out inspection, maintenance and maintenance in the future to seabed, it will be also a no small expense.Moreover, in sacrificial protection process, cannot inform the concrete guard mode of every typhoon group of motors in seawater.Scene artificial image data on the spot if sent someone, this cost will be high fearful so.In the time that a marine wind electric field is installed even thousands of Fans up to a hundred, collection in worksite data are almost the impossible things of part so.And when wind-powered electricity generation unit is arranged in deep-sea, and marine weather is not when being very good, collection in worksite data are also to the breakneck thing of staff.In addition, because weather reason is can not image data time, the waiting time also will increase a part for extra-expense.In the process of sacrificial protection; anode self can discharge the metallic substance of thousands of tons in seawater; thereby ocean environment is produced to huge destruction; although protected the wind-powered electricity generation unit that produces green energy resource in seawater; the zinc-aluminium metal of thousands of up to a hundred tons is but dissolved in seawater, and this can be contradictory with the image of wind energy green and environmental protection.
During installation, general wind-powered electricity generation unit basis steel construction can directly be squeezed into sea bed by huge strength.In this process, all sacrificial anodes that welded can come off and the paint brushed also can seriously be damaged due to external force, and therefore, before sacrificial anode and the real protection of being on active service of paint, their function has been subjected to very large impact.
According to computer simulation data and the measurement of up-to-date authority's approval; within sacrificial anode can only be protected the scope with 14 meters of its place of erection; that that is to say, if the basis of a single leg wind-powered electricity generation unit 60 meters of overall lengths under seawater are so only protected less than 24% area.The steel construction of being on active service at least 25 years for needs, will be a huge risk.
To sum up, there are the following problems for the anti-corrosion method that offshore wind farm unit basis adopts at present and system:
1, need to increase to wind-powered electricity generation unit basis the anode of tens of tons of weight.
2, the anticorrosion life-span is restricted, and wind-powered electricity generation unit basis exists potential safety hazard, and needs constantly to increase anode, and the maintenance of need to diving under water.
3, the impact that preservative effect wind-engaging group of motors is installed.
4, guard space is limited, protects and has little effect in addition apart from 12 meters, anode, and the protection effect under sea level and under sea bed is limited.
5, between the equipment usage period of 20 years, discharge a large amount of Zn, Al ion in seawater, destroy ecotope.
6, can not realize change of external conditions and automatically control, regulate and check basic protection and etch state.
7, inspection, maintenance, maintenance cost are high.
Summary of the invention
The problems referred to above that exist for solving prior art, the utility model designed that a kind of structure is more simple, added weight is extremely low, pollution-free to ocean environment, can real time inspection guard mode, reliable operation and the life-span is long, maintenance workload extremely less, easy to operate and safety, life cycle cost is low, be subject to sea water advanced restriction and the few offshore wind farm unit basis preservative system of area constraints.
To achieve these goals, the technical solution of the utility model is as follows: the preservative system on a kind of offshore wind farm unit basis, comprises direct supply, supplementary anode, reference electrode, electrical control system, terminal box and cable;
Described direct supply is arranged on wind-powered electricity generation unit inside, is connected with electrical control system by cable;
Described supplementary anode has 4, and it is arranged on respectively on three diagonal brace Shang He center steel pipes on wind-powered electricity generation unit basis;
Described reference electrode has 3, wherein has two rear portions that are arranged on supplementary anode, and another one is arranged on the distal-most end on wind-powered electricity generation unit basis;
Output anode, the output cathode of described electrical control system are connected with supplementary anode and wind-powered electricity generation unit basis by terminal box respectively, the another one output terminal of electrical control system connects reference electrode, electrical control system is arranged on the platform in tower of wind generating set cylinder, and is connected with blower fan master control by cable;
Described terminal box is arranged in the center steel pipe on three supporting legs of wind-powered electricity generation unit basis;
Described cable is arranged in tower of wind generating set cylinder and wind-powered electricity generation unit basis, for giving electricity consumption position transmitting power and carrying and feedback signal to detecting position.
Supplementary anode described in the utility model adopts inert material, comprises graphite or platinum, and the shape of supplementary anode comprises bar-shaped, netted and banded.
The material of reference electrode described in the utility model is copper, copper sulfate, saturated Gan Gong or silver chloride.
Anti-corrosion method of the present utility model, comprises the following steps:
A, direct supply provide a galvanic current for electrical control system, and aweather group of motors basis uninterruptedly provides electric current, the voltage control of direct supply at-800mv between-1100mv;
B, supplementary anode are as the anode of preservative system, protected wind-powered electricity generation unit basis is as the negative electrode of preservative system, by in anode surface generation electrochemical reaction, constantly provide electronics to negative electrode, galvanic current by direct supply output is delivered to by medium in the metal construction on protected wind-powered electricity generation unit basis, forces to make it to become negative electrode to implement galvanic protection;
C, reference electrode are measured the current potential on protected wind-powered electricity generation unit basis, monitoring and protecting effect on the one hand; On the other hand, for the electrical control system of automatically controlling provides control signal, with regulation output voltage, realize the automatic control of whole preservative system, and make structure object always in good guard mode;
D, electrical control system are the control sections of whole preservative system, and assurance preservative system is exported corresponding curtage as requested; It has two kinds of control modes, both can carry out constant potential control and also can carry out continuous current control, and the special sequence of control of electrical control system is constantly processed the data stream from reference electrode; Under the help of advanced microprocessor and touch-screen display, by all history data store in storer, make complete historic records visible at any time, make staff can and control software by Internet or Ethernet access on the coast, and can download and upload data and upgrade software; While electrical control system can make staff be connected to any time by computer remote and any place visits all data and guard mode information, and any significant data, setting and renewal can be uploaded to electrical control system or download to computer.
Compared with the aseptic technic of existing offshore wind farm unit basis, the utlity model has following advantage:
1, the utility model is simple in structure, and installation anode quantity is few, and added weight is very low, little to the resistance of water, thereby reduces the hydrodynamic(al) load on wind-powered electricity generation unit basis.
2, the utility model does not need the metallic corrosion that extra current potential is low to dissolve, thereby in seawater, does not discharge positively charged ion, pollution-free to ocean environment.
3, the utility model has adopted rational deployment and the direct additional driving electromotive force of supplementary anode and reference electrode, preservative effect is used in seawater and be subject to the restriction of the degree of depth and area little, can meet the demands at non-deep-sea.
4, the utility model can regulate according to the condition of the wind field of wind-powered electricity generation unit actual installation the output of protective current, can make the basis of unit within optimum protective potential range.
5, electrical control system of the present utility model is connected with blower fan master control; monitoring information can be passed to the master control of blower fan; thereby can carry out remote monitoring and adjusting, in the clear real-time guard situation of checking each of land office, and can store and check the service data that system is over the years.
6, the utility model is follow-up does not need supplementary and increases any material, without additionally dropping into, thus the disposable input of whole life cycle, without corresponding maintenance, comprehensive cost is low during one's term of military service.
7, the utility model impressed current system long service life, even can with the same life-span of wind-powered electricity generation unit.
Accompanying drawing explanation
2, the total accompanying drawing of the utility model, wherein:
Fig. 1 is the schematic diagram of offshore wind farm unit basis preservative system
Fig. 2 is the layout of offshore wind farm unit basis preservative system
In figure: 1, direct supply, 2, electrical control system, 3, supplementary anode, 4, reference electrode, 5, wind-powered electricity generation unit basis, 6, wind-powered electricity generation unit, 7, blower fan master control, 8, cable, 9, terminal box.
Embodiment
Below in conjunction with accompanying drawing, invention is further described.As shown in Figure 1-2, the preservative system on a kind of offshore wind farm unit basis, comprises direct supply 1, supplementary anode 3, reference electrode 4, electrical control system 2, terminal box and cable;
Described direct supply 1 is arranged on wind-powered electricity generation unit 6 inside, is connected with electrical control system 2 by cable;
Described supplementary anode 3 has 4, and it is arranged on respectively on three diagonal brace Shang He center steel pipes on wind-powered electricity generation unit basis 5;
Described reference electrode 4 has 3, wherein has two rear portions that are arranged on supplementary anode 3, and another one is arranged on the distal-most end on wind-powered electricity generation unit basis 5;
Output anode, the output cathode of described electrical control system 2 are connected with supplementary anode 3 and wind-powered electricity generation unit basis 5 by terminal box respectively, the another one output terminal of electrical control system 2 connects reference electrode 4, electrical control system 2 is arranged on the platform in wind-powered electricity generation unit 6 tower cylinders, and is connected with blower fan master control by cable;
Described terminal box is arranged in the center steel pipe on 5 three supporting legs of wind-powered electricity generation unit basis;
Described cable is arranged in wind-powered electricity generation unit 6 tower cylinders and wind-powered electricity generation unit basis 5, for giving electricity consumption position transmitting power and carrying and feedback signal to detecting position.
The material of reference electrode 4 described in the utility model is copper, copper sulfate, saturated Gan Gong or silver chloride.
Anti-corrosion method of the present utility model, comprises the following steps:
A, direct supply 1 provide a galvanic current for electrical control system 2, and aweather group of motors basis 5 uninterruptedly provides electric current, the voltage control of direct supply 1 at-800mv between-1100mv;
B, supplementary anode 3 are as the anode of preservative system, protected wind-powered electricity generation unit basis 5 is as the negative electrode of preservative system, by in anode surface generation electrochemical reaction, constantly provide electronics to negative electrode, the galvanic current of exporting by direct supply 1 is delivered to by medium in the metal construction on protected wind-powered electricity generation unit basis 5, forces to make it to become negative electrode to implement galvanic protection;
C, reference electrode 4 are measured the current potential on protected wind-powered electricity generation unit basis 5, monitoring and protecting effect on the one hand; On the other hand, for the electrical control system 2 of automatically controlling provides control signal, with regulation output voltage, realize the automatic control of whole preservative system, and make structure object always in good guard mode;
D, electrical control system 2 are control sections of whole preservative system, and assurance preservative system is exported corresponding curtage as requested; It has two kinds of control modes, both can carry out constant potential control and also can carry out continuous current control, and the special sequence of control of electrical control system 2 is constantly processed the data stream from reference electrode; Under the help of advanced microprocessor and touch-screen display, by all history data store in storer, make complete historic records visible at any time, make staff can and control software by Internet or Ethernet access on the coast, and can download and upload data and upgrade software; While electrical control system 2 can make staff be connected to any time by computer remote and any place visits all data and guard mode information, and any significant data, setting and renewal can be uploaded to electrical control system 2 or download to computer.
Below in conjunction with accompanying drawing, invention is further described.
As shown in Figure 1; electrical control system 2 is controlled the operation of whole system; the output cathode of power supply is received protective after by electrical control system 2; the namely basis of wind-powered electricity generation unit 6; the output anode of power supply is received supplementary anode 3 after by electrical control system 2, and the another one terminal of electrical control system 2 is received reference electrode 4, detects the protection effect to wind-powered electricity generation unit basis 5; and for electrical control system 2 provides control signal, make wind-powered electricity generation unit 6 all the time in best guard mode.
As shown in Figure 2; 3,3 reference electrodes 4 of 4 supplementary anodes have been installed in the preservative system of wind-powered electricity generation unit 6, and wherein 2 reference electrodes 4 are arranged on after anode; for detection of the voltage of supplementary anode 3, prevent exceed-1100mv of voltage and cause 5 overprotections of wind-powered electricity generation unit basis and hydrogen embrittlement.Another one reference electrode 4 is arranged separately in the distal-most end on wind-powered electricity generation unit basis 5, prevents do not reach-800mv of output voltage and causes protecting effect undesirable.The power supply of wind-powered electricity generation unit basis 5 preservative system electrical control systems 2 is that blower fan master control provides to it by cable, and electrical control system 2 is delivered to wind-powered electricity generation unit basis 5 and each supplementary anode 3 by tapping box by power supply again.Reference electrode 4 feeds back to terminal box by cable by control signal, and terminal box feeds back to electrical control system 2 again, regulation output voltage automatically, thus reach the object of automatically protecting all the time wind-powered electricity generation unit basis 5.
Claims (3)
1. the preservative system on offshore wind farm unit basis, is characterized in that: comprise direct supply (1), supplementary anode (3), reference electrode (4), electrical control system (2), terminal box and cable;
Described direct supply (1) is arranged on wind-powered electricity generation unit (6) inside, is connected with electrical control system (2) by cable;
Described supplementary anode (3) has 4, and it is arranged on respectively on three diagonal brace Shang He center steel pipes on wind-powered electricity generation unit basis (5);
Described reference electrode (4) has 3, wherein has two rear portions that are arranged on supplementary anode (3), and another one is arranged on the distal-most end on wind-powered electricity generation unit basis (5);
Output anode, the output cathode of described electrical control system (2) are connected with supplementary anode (3) and wind-powered electricity generation unit basis (5) by terminal box respectively, the another one output terminal of electrical control system (2) connects reference electrode (4), electrical control system (2) is arranged on the platform in wind-powered electricity generation unit (6) tower cylinder, and is connected with blower fan master control by cable;
Described terminal box is arranged in the center steel pipe on (5) three supporting legs of wind-powered electricity generation unit basis;
Described cable is arranged in wind-powered electricity generation unit (6) tower cylinder and wind-powered electricity generation unit basis (5), for giving electricity consumption position transmitting power and carrying and feedback signal to detecting position.
2. the preservative system on a kind of offshore wind farm unit according to claim 1 basis, is characterized in that: described supplementary anode (3) adopts inert material, comprises graphite or platinum, and the shape of supplementary anode (3) comprises bar-shaped, netted and banded.
3. the preservative system on a kind of offshore wind farm unit according to claim 1 basis, is characterized in that: the material of described reference electrode (4) is copper, copper sulfate, saturated Gan Gong or silver chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890109.8U CN203639561U (en) | 2013-12-31 | 2013-12-31 | Corrosion prevention system offshore of wind turbine generator base |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890109.8U CN203639561U (en) | 2013-12-31 | 2013-12-31 | Corrosion prevention system offshore of wind turbine generator base |
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| CN203639561U true CN203639561U (en) | 2014-06-11 |
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| CN201320890109.8U Expired - Fee Related CN203639561U (en) | 2013-12-31 | 2013-12-31 | Corrosion prevention system offshore of wind turbine generator base |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726057A (en) * | 2013-12-31 | 2014-04-16 | 一重集团大连设计研究院有限公司 | Corrosion resistant system and method of offshore wind power generating set base |
| WO2023175164A2 (en) | 2022-03-18 | 2023-09-21 | Corrosion & Water-Control Shared Services B.V. | Cathodic protection device for use in an impressed current cathodic protection system |
-
2013
- 2013-12-31 CN CN201320890109.8U patent/CN203639561U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726057A (en) * | 2013-12-31 | 2014-04-16 | 一重集团大连设计研究院有限公司 | Corrosion resistant system and method of offshore wind power generating set base |
| CN103726057B (en) * | 2013-12-31 | 2016-05-25 | 一重集团大连设计研究院有限公司 | The anti-corrosion method of the corrosion protection system on a kind of offshore wind farm unit basis |
| WO2023175164A2 (en) | 2022-03-18 | 2023-09-21 | Corrosion & Water-Control Shared Services B.V. | Cathodic protection device for use in an impressed current cathodic protection system |
| NL2031333B1 (en) | 2022-03-18 | 2023-09-29 | Corrosion & Water Control Shared Services B V | Cathodic protection device for use in an Impressed Current Cathodic Protection system |
| WO2023175164A3 (en) * | 2022-03-18 | 2023-11-23 | Corrosion & Water-Control Shared Services B.V. | Cathodic protection device for use in an impressed current cathodic protection system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20171231 |