CN201827015U - Safety device of pitch control system - Google Patents
Safety device of pitch control system Download PDFInfo
- Publication number
- CN201827015U CN201827015U CN2010202497139U CN201020249713U CN201827015U CN 201827015 U CN201827015 U CN 201827015U CN 2010202497139 U CN2010202497139 U CN 2010202497139U CN 201020249713 U CN201020249713 U CN 201020249713U CN 201827015 U CN201827015 U CN 201827015U
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- CN
- China
- Prior art keywords
- mechanical limit
- control
- limit switches
- switches
- pair
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model relates to a safety device of a pitch control system, belonging to the technical field of safety control of a wind turbine generator system. The safety device comprises a programmable logic controller, a driving mechanism, a power supply and a detection element, and is characterized in that the detection element comprises a pair of photoelectric switches and a pair of mechanical limit switches, the two mechanical limit switches are arranged on a mounting plate corresponding to blades and form an included angle of 90 degrees, and the photoelectric switches are arranged on the internals sides of the mechanical limit switches. By adding two stages of redundant switch control quantities in a blade pitch system, under the situation that a sensor is out of control, the photoelectric switches and the mechanical limit switches can be successively turned on to realize emergency braking, and the safety of an entire machine during pitch control can be guaranteed to the utmost extent.
Description
Technical field
The utility model relates to a kind of combined type safety switch of control system, specifically a kind of variable blade control system safety installations.
Background technique
In the variable blade control system of large-scale wind driven generator, regulate the angle that facings the wind of blower fan blade usually automatically by program, to improve the output power efficient of wind-driven generator.Simultaneously, become oar by blade and can make blade under controllable state, be in the feathering state, break down or wind-force exceeds under the situation of unit limit load at unit like this, reduce brake load greatly, thereby reduce the load of tower tube, guarantee the safety of whole unit.
In becoming the oar control procedure, the adjusting of main blade realizes by sensor and control program.But because large fan operation in the open air throughout the year, and under the state of maintenance and debugging, sensor phenomenon out of control inevitably can appear, in case occur, will bring huge damage to blade and unit.The Security that how to improve pitch-controlled system is one of target of scientific and technological development personnel effort.
The model utility content
The purpose of this utility model is to provide a kind of variable blade control system safety installations, by designing redundant optoelectronic switch and mechanical limit switch, forms the dual fail-safe of pitch-controlled system, farthest improves the Security that becomes the oar process.
The technical scheme in the invention for solving the technical problem is: this kind variable blade control system safety installations, comprise programmable controller, driving mechanism, power supply and Detecting element, it is characterized in that, described Detecting element also comprises a pair of photoswitc and a pair of mechanical limit switch, and described two mechanical limit switches are 90 ° of angles and are arranged in get supporting plate on corresponding with blade in the wheel hub, and described optoelectronic switch is arranged in the inboard of mechanical limit switch.
The beneficial effects of the utility model are: by increase the switch controlled quentity controlled variable of two-stage redundancy in the blade pitch-controlled system, under optoelectronic switch sensing situation out of control, can realize bringing to a halt by mechanical limit switch, increase Security, also can farthest ensure the complete machine safety that becomes in the oar process.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a subssembly drawing of the present utility model;
Among the figure: 1 photoswitc, 2 mechanical limit switches, 3 driving mechanisms, 4 blade gear rings, 5 wheel hubs, 6 upper limit switching group, 7 limit switch groups.
Embodiment
As shown in Figure 1 and Figure 2, this kind variable blade control system safety installations is used to control the change oar scope of blade, relates to 5 two critical pieces of blade gear ring 4 and wheel hub.
This kind variable blade control system safety installations comprises programmable controller, driving mechanism 3, power supply and Detecting element, described Detecting element also comprises a pair of photoswitc 1 and a pair of mechanical limit switch 2, at first be fixed on the wheel hub 5 after photoswitc and the mechanical limit switch combination by bearing, form upper limit switching group 6 and limit switch group 7, and optoelectronic switch 1 is arranged in the inboard of mechanical limit switch 2.Two mechanical limit switches are 90 ° of angles and are arranged on the head wheel hub 5.
By in pitch-controlled system, increasing the switch controlled quentity controlled variable of two-stage redundancy, under the situation of controlling the faulty sensor that becomes the vane angle degree, the urgency that at first is optoelectronic switch control blade is stopped, and under optoelectronic switch situation also out of control, mechanical limit switch further control blade suddenly stops.
Except that the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (1)
1. variable blade control system safety installations, comprise programmable controller, driving mechanism, power supply and Detecting element, it is characterized in that, described Detecting element also comprises a pair of photoswitc and a pair of mechanical limit switch, and described two mechanical limit switches be 90 ° of angles be arranged in the corresponding mounting plate of blade on, described optoelectronic switch is arranged in the inboard of mechanical limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202497139U CN201827015U (en) | 2010-07-07 | 2010-07-07 | Safety device of pitch control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202497139U CN201827015U (en) | 2010-07-07 | 2010-07-07 | Safety device of pitch control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201827015U true CN201827015U (en) | 2011-05-11 |
Family
ID=43965555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202497139U Expired - Fee Related CN201827015U (en) | 2010-07-07 | 2010-07-07 | Safety device of pitch control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201827015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145349A (en) * | 2020-09-28 | 2020-12-29 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator pitch system limit switch trigger identification and control method |
-
2010
- 2010-07-07 CN CN2010202497139U patent/CN201827015U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145349A (en) * | 2020-09-28 | 2020-12-29 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator pitch system limit switch trigger identification and control method |
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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: 20110511 Termination date: 20160707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |