CN204591593U - A kind of blade fault monitoring device for wind-driven generator - Google Patents
A kind of blade fault monitoring device for wind-driven generator Download PDFInfo
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- CN204591593U CN204591593U CN201520203659.7U CN201520203659U CN204591593U CN 204591593 U CN204591593 U CN 204591593U CN 201520203659 U CN201520203659 U CN 201520203659U CN 204591593 U CN204591593 U CN 204591593U
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Abstract
The utility model discloses a kind of blade fault monitoring device for wind-driven generator, comprise: switch controlling signal collecting device and reference time signal pickup assembly, controller realizes blade fault monitoring by the time difference of compute switch control signal and reference time signal.The beneficial effects of the utility model are: 1, the utility model is directly monitored blade, add the reliability of system; Adopt non-contact laser sensor collection signal, monitor signal is easily obtained, effectively can eliminate the impact of extraneous signal, avoid collection signal to introduce noise signal, avoid carrying out complicated data processing; The cost that system is simple, reduce system and installation difficulty; 2, contrasted by two time differences, when realizing blade fault, monitoring unit exports stopping signal and shuts down to theft-resistant link chain loop, realizes the early warning of fault; 3, the utility model scientific structure design is reasonable, cost is low, easy to use and maintenance, has good popularizing application prospect.
Description
Technical field
The utility model relates to wind-driven generator malfunction monitoring technical field, particularly relates to a kind of blade fault monitoring device for wind-driven generator.
Background technique
Wind-power electricity generation is the most ripe in generation of electricity by new energy technology, most large-scale development and the generation mode having commercialized development prospect most.Due to the outstanding role improving the ecological environment, in Optimization of Energy Structure, promotion Sustainable Socioeconomic Development etc., wind-power electricity generation and correlation technique thereof are being greatly developed and studied in current countries in the world all.Blade is the critical component that wind power generating set absorbs wind energy, and cost accounts for more than 20% of complete machine, and in running, load is complicated, and operating conditions is severe.So the fan blade of long-time running, there will be crackle in various degree, finally causes leaf destruction, brings serious threat to the safe operation of whole Wind turbines, even causes the generation of major accident.According to investigations, the downtime rate caused because of blade problem is about more than 30%, and mostly the Frequent Accidents phase is that this will bring very large economic loss to wind energy turbine set, therefore particularly important to the condition monitoring and fault diagnosis of wind power generation blade in the Sheng wind generating phase.
At present, monitoring technology relevant in prior art comprises blade and pastes detection medium and vibration monitoring, but, because load in wind power generation blade running is complicated, work under bad environment, blade is pasted detection medium and is difficult to realize, and it is serious that vibration monitoring fails to report wrong report problem, and above two kinds of prior aries all do not reach the object of minimizing accident and loss.
Summary of the invention
The utility model provides a kind of blade fault monitoring device for wind-driven generator, carries out in order to solve use prior art the object problem that blade fault monitoring all fails to reach minimizing accident and loss.
For realizing the purpose of this utility model, the utility model provides a kind of blade fault monitoring device for wind-driven generator, comprise: switch controlling signal collecting device and reference time signal pickup assembly, described switch controlling signal collecting device is for gathering the switch controlling signal of blade by predeterminated position, described reference time signal pickup assembly is for gathering reference time signal, and controller realizes blade fault monitoring by the time difference of compute switch control signal and reference time signal.
Wherein, described switch controlling signal collecting device comprises: multiple non-contact laser sensor, and described multiple described non-contact laser sensor is uniformly distributed in outside tower cylinder circumferentially same, and described non-contact laser sensor is connected with described controller.
Wherein, described non-contact laser sensor mounting point with along length of blade direction near blade tip position.
Wherein, the wind angle surveyed according to unit flow direction vane opens the described non-contact laser sensor in corresponding angle, realizes the alternation of described non-contact laser sensor.
Wherein, described reference time signal pickup assembly comprises: electromagnetic sensor and signal generator, described signal generator is three, and be evenly distributed on outside main shaft circumferentially same, described electromagnetic sensor arranges and matches with the setting position of described signal generator, and described electromagnetic sensor is connected with described controller.
Wherein, described signal generator is strong magnets.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model is directly monitored blade, adds the reliability of system; Adopt non-contact laser sensor collection signal, monitor signal is easily obtained, effectively can eliminate the impact of extraneous signal, avoid collection signal to introduce noise signal, avoid carrying out complicated data processing; Simple, the easy to use maintenance of system, reduces cost and the installation difficulty of system;
2, the switch controlling signal exported by serial ports by column foot monitoring unit acquisition and processing non-contact laser sensor and reference time signal.Contrasted by two time differences, when realizing blade fault, monitoring unit exports stopping signal and shuts down to theft-resistant link chain loop, realizes the early warning of fault;
3, the utility model scientific structure design is reasonable, and cost is low, easy to use and safeguard, is a kind of blade of wind-driven generator fault monitoring device reliably, has good popularizing application prospect.
Accompanying drawing explanation
Fig. 1 is the utility model blade deformation schematic diagram;
Fig. 2 is the utility model switch controlling signal structural representation;
Fig. 3 is the utility model switch controlling signal mounting point schematic diagram;
Fig. 4 is the utility model reference time signal pickup assembly principle schematic;
Fig. 5 is the utility model signal generator structural representation;
Fig. 6 is the utility model reference time signal pickup assembly and mounting point schematic diagram;
In figure: 1-switch controlling signal collecting device; 2-non-contact laser sensor; 3-vane rotary plan-position; 4-tower cylinder; 5-main shaft; 6-signal generator; 7-electromagnetic sensor; 8-speed increaser.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, because wind electricity blade is equally distributed, so the arc length between vane tip is S, when deforming before leaf destruction, blade can produce displacement because of distortion, and vane tip change in displacement is maximum, and the arc length between two vane tips will become S+ Δ S.Based on above-mentioned thought, consider that the arc length change between adjacent blades is not easy directly monitored, be converted to the time difference t between measurement two blade.When impeller runs, collection blade fault detection device is received switch controlling signal and reference time signal by column foot controller, is carried out twice contrasting the monitoring realizing blade fault.
In theory, because the arc length between vane tip is S, when blade does not deform, the time difference t between vane tip is a constant.In fact, when blade deforms, between two vane tips, the time difference will become t+ Δ t, consider that in wind power generation blade running, load is complicated, operating conditions is badly on the impact of monitoring, and the allowance basis of the time difference Δ t calculated above when programming increasing by 10% just can overcome these impacts.
As shown in Figure 2, the utility model provides a kind of blade fault monitoring device for wind-driven generator, comprise: switch controlling signal collecting device 1 and reference time signal pickup assembly, described switch controlling signal collecting device 1 is for gathering the switch controlling signal of blade by predeterminated position, described reference time signal pickup assembly is for gathering reference time signal, and controller realizes blade fault monitoring by the time difference of compute switch control signal and reference time signal.
Preferably, switch controlling signal collecting device 1 comprises: uniform circular is distributed in the non-contact laser sensor 2 outside tower cylinder 4, and heavy line represents the critical localisation 3 residing for impeller.
As shown in Fig. 3, Fig. 6, preferably, the concrete mounting point of switch controlling signal collecting device 1 to should be outside tower cylinder 4 along length of blade direction near blade tip position, and opens corresponding angle inner laser sensor 2 according to the wind angle that unit flow direction vane is surveyed, and realizes the alternation of sensor.
It should be noted that, the switch controlling signal that the utility model is exported by serial ports by controller acquisition and processing non-contact laser sensor.
Wherein, as shown in Figure 4, Figure 5, described reference time signal pickup assembly comprises: electromagnetic sensor 7 and signal generator 6, described signal generator 6 is three, and be evenly distributed on outside main shaft 5 circumferentially same, the setting position of described electromagnetic sensor 7 matches with the setting position of described signal generator 6, and described electromagnetic sensor 7 is connected with described controller.
Preferably, described signal generator 6 can be three pieces of strong magnets.
The utility model adopts electromagnetic sensor 7 to detect spindle speed.Equally; vane rotary one week; controller receives electromagnetic sensor 7 tertiary switch amount; the controller Real-time Collection electromagnetic sensor 7 input pulse time; this time is the reference signal time mentioned in the utility model, the time of controller compute switch control signal input pulse, is contrasted by two time differences; when realizing blade fault, monitoring unit exports stopping signal and shuts down to theft-resistant link chain loop, realizes the early warning of fault.
Controller in the utility model can select column foot monitoring unit.
The utility model adopts the working state of directly monitoring blade to be a good method, not only reduces the cost of supervisory system, more improves the reliability of system when smooth running.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. the blade fault monitoring device for wind-driven generator, it is characterized in that, comprise: switch controlling signal collecting device and reference time signal pickup assembly, described switch controlling signal collecting device is for gathering the switch controlling signal of blade by predeterminated position, described reference time signal pickup assembly is for gathering reference time signal, controller realizes blade fault monitoring by the time difference of compute switch control signal and reference time signal
Described switch controlling signal collecting device comprises: multiple non-contact laser sensor, and described multiple described non-contact laser sensor is uniformly distributed in outside tower cylinder circumferentially same, and described non-contact laser sensor is connected with described controller,
Described reference time signal pickup assembly comprises: electromagnetic sensor and signal generator, described signal generator is three, and be evenly distributed on outside main shaft circumferentially same, described electromagnetic sensor arranges and matches with the setting position of described signal generator, and described electromagnetic sensor is connected with described controller.
2. the blade fault monitoring device for wind-driven generator according to claim 1, is characterized in that, the mounting point of described non-contact laser sensor with along length of blade direction near blade tip position.
3. the blade fault monitoring device for wind-driven generator according to claim 1, it is characterized in that, the wind angle surveyed according to unit flow direction vane opens the described non-contact laser sensor in corresponding angle, realizes the alternation of described non-contact laser sensor.
4. the blade fault monitoring device for wind-driven generator according to claim 1, is characterized in that, described signal generator is strong magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520203659.7U CN204591593U (en) | 2015-04-07 | 2015-04-07 | A kind of blade fault monitoring device for wind-driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520203659.7U CN204591593U (en) | 2015-04-07 | 2015-04-07 | A kind of blade fault monitoring device for wind-driven generator |
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| CN204591593U true CN204591593U (en) | 2015-08-26 |
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| CN201520203659.7U Active CN204591593U (en) | 2015-04-07 | 2015-04-07 | A kind of blade fault monitoring device for wind-driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120223A (en) * | 2019-12-16 | 2020-05-08 | 大连赛听科技有限公司 | Blade fault monitoring method and device based on double arrays |
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2015
- 2015-04-07 CN CN201520203659.7U patent/CN204591593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120223A (en) * | 2019-12-16 | 2020-05-08 | 大连赛听科技有限公司 | Blade fault monitoring method and device based on double arrays |
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