CN203978729U - The steel structure wind tower corrosion monitor of marine wind electric field - Google Patents
The steel structure wind tower corrosion monitor of marine wind electric field Download PDFInfo
- Publication number
- CN203978729U CN203978729U CN201420383915.0U CN201420383915U CN203978729U CN 203978729 U CN203978729 U CN 203978729U CN 201420383915 U CN201420383915 U CN 201420383915U CN 203978729 U CN203978729 U CN 203978729U
- Authority
- CN
- China
- Prior art keywords
- unit
- steel structure
- signal amplification
- wind tower
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y02E10/722—
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The steel structure wind tower corrosion monitor of marine wind electric field, relates to corrosion of steel structure monitoring.Be provided with monitoring sensing unit, signal amplification unit, signal comparing unit and alarm unit; Monitoring sensing unit is provided with anode and steel structure wind tower, and steel structure wind tower is as negative electrode; Signal amplification unit is for the treatment of capacitance output voltage with continuous acquisition monitoring sensing unit; Signal comparing unit is for comparing the output voltage of signal amplification unit and setting voltage, according to the magnitude of voltage of comparative result stable output; When being used for the extent of corrosion of institute monitored area to reach certain grade, alarm unit reports to the police; Monitoring sensing unit, signal amplification unit, signal comparing unit are connected successively with alarm unit; Anode is connected with the inverting input of signal amplification unit, and steel structure wind tower is connected with signal amplification unit output terminal, and signal amplification unit output terminal is connected with the in-phase input end of signal comparing unit, and signal comparing unit output terminal is connected with alarm unit input end.It can be realized reliable corrosion and report to the police.
Description
Technical field
The utility model relates to corrosion of steel structure monitoring, especially relates to a kind of steel structure wind tower corrosion monitor of realizing the marine wind electric field of monitoring by electric capacity permittivity, the isoparametric variation of polar plate spacing.
Background technique
Marine wind electric field running environment is very complicated, and high temperature, high humidity, high salt fog and long-day etc., corrosive environment is very harsh, and this allows the reliable operation of offshore wind power equipment face a severe challenge.Thus, etching problem becomes one of major issue that marine wind electric field faces.The harm causing for reducing corrosion, need to drop into a large amount of manpower and materials for research, the development and application of corrosion monitor and anticorrosion equipment.By corrosion monitoring, can prevent the further expansion of corrosion harmfulness, between acquisition extent of corrosion and element design parameter, for information about, with the extension device life-span, improve quality of product, reduce investment and operating cost.
Corrosion monitoring is mainly developed by laboratory corrosiontesting method and Dynamic Non-Destruction Measurement, and conventional corrosion monitoring technology can be divided into the technology such as direct observation, non-destructive inspection, on-line monitoring, aggressive medium chemical analysis, corrosion product analysis.At present, in industrial corrosion on-line monitoring system, wider have weight loss, Resistance probe (ER), the LPR of application measured the methods such as (LPR), galvanic couple/potential monitoring, hydrogen infiltration, ultrasonic measurement.
At present, for the measure of offshore wind farm engineering foundation facility corrosion monitoring, the experience that mainly comes from the aspects such as offshore oil platform, ice breaker and submerged pipeline, although the anticorrosion monitoring of marine wind electric field can be to a great extent with reference to the existing experience of ocean platform, but both still exist many difference in practice, so directly use for reference the anticorrosion monitoring experience of ocean platform, for marine wind electric field, also has very large difficulty.
Summary of the invention
The purpose of this utility model is to provide the corrosion monitoring that can realize particular location, can reflect well the steel structure wind tower corrosion monitor of a kind of marine wind electric field of steel structure wind tower local location corrosion tendency.
The utility model is provided with:
Monitoring sensing unit, described monitoring sensing unit is for monitoring the variation of electric capacity, and monitoring sensing unit is provided with anode and steel structure wind tower, and steel structure wind tower is as negative electrode;
Signal amplification unit, described signal amplification unit is for the treatment of the capacitance with continuous acquisition monitoring sensing unit, and output voltage;
Signal comparing unit, described signal comparing unit is for comparing the output voltage of signal amplification unit and setting voltage, according to the magnitude of voltage of comparative result stable output;
Alarm unit, reports to the police when described alarm unit is used for the extent of corrosion of institute monitored area to reach certain grade;
Described monitoring sensing unit, signal amplification unit, signal comparing unit are connected successively with alarm unit; Described anode is connected with the inverting input of signal amplification unit, steel structure wind tower is connected with signal amplification unit output terminal, signal amplification unit output terminal is connected with the in-phase input end of signal comparing unit, and signal comparing unit output terminal is connected with alarm unit input end.
Described anode can adopt curve face anode plate, and the radian of curve face anode plate can be identical with steel structure wind tower, and curve face anode plate is parallel to the surface, monitored district of steel structure wind tower and places; Anode can adopt anti-corrosion material, and the employing anticorrosive coating technique identical with steel structure wind tower is carried out preservative treatment.
The beneficial effects of the utility model:
1 anode adopts with the identical anticorrosive coating of steel structure wind tower, and preparation process is ripe, is convenient to extent of corrosion to amplify simultaneously, realizes corrosion reliably and reports to the police;
Between 2 anodes and negative electrode, do not contact, monitoring result has generality, to analyzing all wind towers of this wind energy turbine set corrosion condition, provides reference;
The erosion of 3 pairs of head tower burn intos and local pitting corrosion have monitoring capability, can reflect well the corrosion tendency of particular location, are convenient to grasp etch state, take in time reclamation activities;
4 simplicity of design, monitoring system does not almost consume in whole using process, and antijamming capability is strong, during assembling, without shutdown, can not occur to get an electric shock and short circuit risk.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's structure composition frame chart.
Fig. 2 is the utility model embodiment's circuit theory schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and concrete mode of execution, the utility model is further elaborated.
As shown in Figure 1, the utility model embodiment is provided with monitoring sensing unit 1, signal amplification unit 2, signal comparing unit 3 and alarm unit 4.
Monitoring sensing unit 1 is for monitoring the variation of electric capacity, and monitoring sensing unit 1 is provided with anode and steel structure wind tower, and steel structure wind tower is as negative electrode;
Described signal amplification unit 2 is for the treatment of the capacitance with continuous acquisition monitoring sensing unit 1, and output voltage;
Described signal comparing unit 3 is for comparing the output voltage of signal amplification unit 2 and setting voltage, according to the magnitude of voltage of comparative result stable output;
Described alarm unit 4 is reported to the police when the extent of corrosion of institute monitored area is reached to certain grade;
Described monitoring sensing unit 1, signal amplification unit 2, signal comparing unit 3 and alarm unit 4 are connected successively; Described anode is connected with the inverting input of signal amplification unit 2, steel structure wind tower is connected with signal amplification unit 2 output terminals, signal amplification unit 2 output terminals are connected with the in-phase input end of signal comparing unit 3, and signal comparing unit 3 output terminals are connected with alarm unit 4 input ends.
Described anode can adopt curve face anode plate, and the radian of curve face anode plate can be identical with steel structure wind tower, and curve face anode plate is parallel to the surface, monitored district of steel structure wind tower and places; Anode can adopt anti-corrosion material, and the employing anticorrosive coating technique identical with steel structure wind tower is carried out preservative treatment.
Fig. 2 is embodiment's circuit theory schematic diagram based on becoming the marine wind electric field steel structure wind tower corrosion monitoring process of capacitance method according to the utility model, it comprises: monitoring sensing unit 1, comprise positive plate (being equivalent to the Rx in Fig. 2) and as the steel structure wind tower of minus plate, its equivalent circuit diagram is bridge circuit as shown in Figure 2, R
1and R
2for standard resistor, R
3for zero-regulator resistor, for monitoring the variation of electric capacity; Signal amplification unit 2, it is for monitoring the capacitance of sensing unit 1 described in continuous acquisition, and exports relevant voltage; Signal comparing unit 3, it utilizes output voltage and the setting voltage U of signal amplification unit 2
2compare, according to the magnitude of voltage of comparative result stable output; Alarm unit 4, reports to the police when its extent of corrosion to institute monitored area reaches certain grade.
Wherein said monitoring sensing unit 1, signal amplification unit 2, signal comparing unit 3 and alarm unit 4 are connected successively.The steel structure wind tower corrosion monitor of described wind energy turbine set, it is characterized in that positive plate is curved plate (being equivalent to the Rx in Fig. 2), and radian is identical with steel structure wind tower 2, is placed in parallel in the surface, monitored district of steel structure wind tower 2.Positive plate utilizes anti-corrosion material, and employing is carried out preservative treatment with the identical anticorrosive coating technique of wind tower.Positive plate is connected and (sees the resistance R of Fig. 2 with the inverting input of signal amplification unit 2
4), steel structure wind tower is connected with the output terminal of signal amplification unit 2, and signal amplification unit 2 output terminals seal in resistance R
7be connected with signal comparing unit 3 in-phase input ends, signal comparing unit 3 output terminals seal in resistance R
8with bi-directional voltage stabilizing diode D
1in parallel with clamp output voltage, and be connected with the base stage of triode Q in alarm unit 4, by light emitting diode D
2display alarm signal.
The utility model parallel area to be monitored that is installed on steel structure wind tower of positive plate used when concrete measurement, with between head tower without directly contacting, as there being the air that is applied to the anticorrosive coating on wind tower surface and high salt, high humidity between the steel structure wind tower of minus plate and positive plate.In steel structure wind tower corrosion-inhibiting coating corrosion process, first surface lacquer and the intermediate coat filmed in this corrosion region suffer erosion, and the priming paint that then contains zinc powder is corroded.Wherein zinc powder is first corroded as anode, and base material iron and steel is negative electrode, is protected.When paint film is damaged, expose again new metallic zinc, potential difference increases immediately, produces stronger cathodic protection effect.
Accordingly, arbitrary monitoring pole plate representative extent of corrosion is judged by the electric capacity changing with DIELECTRIC CONSTANTS and pole plate mean gap d:
C＝ε S/d (1)
Under high temperature, high humidity, high salt fog and the environment of long-day, when positive plate with as the constantly attenuation of corrosion-inhibiting coating of the steel structure wind tower of minus plate, so that electric capacity DIELECTRIC CONSTANTS diminishes, be subject to the impact of the spray to there will be pitting corrosion simultaneously, so that pole plate mean gap d increases, in formula (1), S representative monitoring polar plate area.Because the anticorrosive coating of positive plate and steel structure wind tower adopts identical anticorrosive coating technique, positive plate is subject to corrosion in various degree equally, so extent of corrosion is exaggerated.From formula (1), during initial measurement, the numerical value of capacitor C is larger before relatively corroding, and along with the intensification of positive plate and steel structure wind tower extent of corrosion, the capacitor C between pole plate will reduce.Because burn into erosion and pitting corrosion are a kind of irreversible chemistry and physical phenomenon, therefore electric capacity should be in time and monotone decreasing in theory.
From experiment test and present situation, test, with the intensification of extent of corrosion, all obviously occurred the phenomenon that electric capacity reduces.But survey in capacitance values littlely, and in engineering, need to convert to electrical signal, therefore utilize signal amplification unit that the variation of capacitance is amplified.
The utility model has specifically utilized in-phase proportion amplifier to amplify and output voltage electric capacity between pole plate, by hysteresis loop comparator, the amplitude of voltage is judged again, when voltage is greater than the threshold value of comparator setting, hysteresis loop comparator output high level, the PN junction conducting of triode Q thus, light emitting diode D
2forward conduction luminous alarm.
Can see, positive plate of the present utility model adopts with the identical anticorrosive coating of steel structure wind tower as minus plate, and preparation process is ripe, is convenient to extent of corrosion to amplify simultaneously, realizes reliable corrosion monitoring and reports to the police.And positive plate does not directly contact with steel structure wind tower, and monitoring result has generality, for analyzing all wind towers of this wind energy turbine set corrosion condition, provides reference.For the position of typical corrosion, this equipment is installed, can be possessed the burn into erosion of steel structure wind tower and the monitoring capability of local pitting corrosion, can reflect well the corrosion tendency of particular location, be convenient to grasp etch state, take in time reclamation activities.The utility model simplicity of design does not almost consume in whole using process, and antijamming capability is strong, during assembling, without shutdown, can not occur to get an electric shock and short circuit risk.
Claims (3)
1. the steel structure wind tower corrosion monitor of marine wind electric field, is characterized in that being provided with:
Monitoring sensing unit, described monitoring sensing unit is for monitoring the variation of electric capacity, and monitoring sensing unit is provided with anode and steel structure wind tower, and steel structure wind tower is as negative electrode;
Signal amplification unit, described signal amplification unit is for the treatment of the capacitance with continuous acquisition monitoring sensing unit, and output voltage;
Signal comparing unit, described signal comparing unit is for comparing the output voltage of signal amplification unit and setting voltage, according to the magnitude of voltage of comparative result stable output;
Alarm unit, reports to the police when described alarm unit is used for the extent of corrosion of institute monitored area to reach certain grade;
Described monitoring sensing unit, signal amplification unit, signal comparing unit are connected successively with alarm unit; Described anode is connected with the inverting input of signal amplification unit, steel structure wind tower is connected with signal amplification unit output terminal, signal amplification unit output terminal is connected with the in-phase input end of signal comparing unit, and signal comparing unit output terminal is connected with alarm unit input end.
2. the steel structure wind tower corrosion monitor of marine wind electric field as claimed in claim 1, is characterized in that described anode adopts curve face anode plate.
3. the steel structure wind tower corrosion monitor of marine wind electric field as claimed in claim 2, is characterized in that the radian of described curve face anode plate is identical with steel structure wind tower, and curve face anode plate is parallel to the surface, monitored district of steel structure wind tower and places.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383915.0U CN203978729U (en) | 2014-07-11 | 2014-07-11 | The steel structure wind tower corrosion monitor of marine wind electric field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383915.0U CN203978729U (en) | 2014-07-11 | 2014-07-11 | The steel structure wind tower corrosion monitor of marine wind electric field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978729U true CN203978729U (en) | 2014-12-03 |
Family
ID=51976183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420383915.0U Expired - Fee Related CN203978729U (en) | 2014-07-11 | 2014-07-11 | The steel structure wind tower corrosion monitor of marine wind electric field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111284644A (en) * | 2020-03-13 | 2020-06-16 | 上海外高桥造船有限公司 | Liquid cargo tank and floating oil storage ship |
| CN112343775A (en) * | 2020-11-12 | 2021-02-09 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | On-line monitoring method for corrosion of tower drum of offshore wind turbine generator system |
-
2014
- 2014-07-11 CN CN201420383915.0U patent/CN203978729U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111284644A (en) * | 2020-03-13 | 2020-06-16 | 上海外高桥造船有限公司 | Liquid cargo tank and floating oil storage ship |
| CN112343775A (en) * | 2020-11-12 | 2021-02-09 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | On-line monitoring method for corrosion of tower drum of offshore wind turbine generator system |
| CN112343775B (en) * | 2020-11-12 | 2024-03-19 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | On-line monitoring method for tower corrosion of offshore wind turbine generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6144205B2 (en) | Cathodic protection monitoring probe | |
| CN203978729U (en) | The steel structure wind tower corrosion monitor of marine wind electric field | |
| CN100585010C (en) | Monitoring device for sea platform sacrificing anode and generating current flow | |
| CN109797399A (en) | The measuring device and method of steel gas pipe underground polarization potential | |
| CN103134748B (en) | Method for predicting corrosion life of transmission line hardware in industrial area | |
| Popov et al. | Cathodic protection of pipelines | |
| CN102305817A (en) | Multi-functional probe for monitoring corrosion of water pipeline and protecting water pipeline | |
| CN209961662U (en) | Corrosion on-line monitoring device | |
| CN202166630U (en) | Multifunctional probe for monitoring corrosion and protection of water pipelines | |
| CN102520021A (en) | Method for on-line monitoring of corrosion condition of anti-corrosion liner slurry tank body equipment | |
| CN109269975A (en) | Underwater equipment corrosion potential data detection system | |
| CN115541490A (en) | Marine environment fixed type coating aging monitoring probe and coating service life prediction method | |
| CN203259493U (en) | Reference electrode for protecting and monitoring cathode of offshore wind power foundation | |
| CN112343775B (en) | On-line monitoring method for tower corrosion of offshore wind turbine generator | |
| CN209296544U (en) | Underwater equipment corrosion potential data detection system | |
| CN104313598B (en) | A kind of splash zone steel construction multilayer proofing monitoring and emergency security system and method | |
| CN103792181A (en) | Constant-current dissolution method for evaluating negative electrode protection performance of zinc-rich coating | |
| CN202744633U (en) | Pipeline and station yard power failure potential effectiveness evaluating device | |
| TWI636245B (en) | System and method for monitoring metal collision | |
| CA2353937A1 (en) | Corrosion monitoring | |
| Yan et al. | Prevention of Q235 steel corrosion using waterborne rust inhibitor | |
| CN219907855U (en) | Pipeline anticorrosive coating cathodic protection test system | |
| Salman et al. | Effects of conformal coatings on the corrosion rate of PCB-based multielectrode-array-sensor | |
| CN217180534U (en) | Dissimilar metal galvanic corrosion behavior test device under damaged organic coating | |
| CN208350600U (en) | Wind-power tower etch state detection device |
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: 20141203 Termination date: 20170711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |