CN202867093U - Normally closed type counterweight pressure-boost controlling yaw braking system for wind turbine generator - Google Patents
Normally closed type counterweight pressure-boost controlling yaw braking system for wind turbine generator Download PDFInfo
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- CN202867093U CN202867093U CN2012205911229U CN201220591122U CN202867093U CN 202867093 U CN202867093 U CN 202867093U CN 2012205911229 U CN2012205911229 U CN 2012205911229U CN 201220591122 U CN201220591122 U CN 201220591122U CN 202867093 U CN202867093 U CN 202867093U
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- plunger
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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
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Abstract
A normally closed type counterweight pressure-boost controlling yaw braking system for wind turbine generator is composed of a brake cylinder body 1, a plunger 2, a brake spring 3, a two-position three-way electromagnetic valve 6, a decompression oil tank 7, a one-way valve 8, a weight 9, a pressure-boost plunger 10, a pressure-boost cylinder tube 11 and the like. The normally closed type counterweight pressure-boost controlling yaw braking system for wind turbine generator is characterized in that the brake spring 3 is arranged between an upper plane of the plunger 2 and an inner plan of the top of the brake cylinder body 1, the pressure-boost cylinder 11 is connected with an upper cavity between the plunger 2 and the brake cylinder body 1 by the two-position three-way electromagnetic valve 6, and the pressure-relief 7 is connected with the other port of the two-position three-way electromagnetic valve 6. When the wind turbine generator runs to generate electricity, stable braking force to a cabin is supplied by the brake spring 3 and the pressure-boost plunger 10 together, when the wind direction changes, yaw is needed to enable the cabin to be aimed at the wind direction, the two-position three-way magnetic valve 6 gains power and changes direction, the pressure of the upper cavity between the plunger 2 and the brake cylinder body 1 is released, only spring force of the brake spring 3 is remained to provide stable damping to the cabin and ensure the stable rotation of the cabin.
Description
One, technical field:
The present invention relates to a kind of wind power generating set Normally closed type weight pressurization control yawing brake system.This Normally closed type weight supercharging yawing brake system especially is adapted to medium-and-large-sized pitch-controlled wind-driven generator group, also is adapted to wind power generating set and the machinery of other type.
Two, background technique:
Human in order to restructure the use of energy, adopt as soon as possible the clean energy resource service human, wind generating technology is rapidly development.Along with the development of this technology, in order to improve the generating efficiency of wind power generating set, hydraulic transmission and control system are widely used in the control of impeller driftage.
In existing impeller driftage control, mainly be the stable braking that will guarantee when wind-driven generator work the cabin, and the stable damping force of when the impeller yawing rotation, the cabin being rotated, guarantee the rotation of calming down in cabin.In order to reach this function, people have adopted the caliper brake of hydraulic control to satisfy its usage requirement.In this class hydraulic braking sytem of prior art, mostly adopted normally opened brake: namely break often leaves, only have when hydraulic system is supplied with high pressure oil to the epicoele of its plunger, the plunger of master cylinder is under the effect of hydraulic oil, move down the compression braking plate, the cabin has been fixed in braking, and impeller is aimed at wind direction rotary, drives generator and sends electric power; When variation has occured wind direction, need impeller to go off course when aiming at wind direction, hydraulic system supplies with low pressure oil can only for the epicoele of master cylinder, so that the cabin drives the position that forwards reposefully appointment to by Yawing mechanism under the effect of certain sassafras damping that rubs.This normally opened brake system requirements hydraulic control system is long-term dynamics pressurize operation when running of wind generating set, so that the temperature of hydraulic power unit is very high.Often leak in actual use, the direct result of this state is exactly: system's dwell time shortens again energy transform into heat energy heating hydraulic power unit of---motor pump frequent starting---motor pump work done; System by fluid during constantly heating and motor pump constantly start reduced viscosity---the sealability of system further reduces; Sealing accelerated ageing and destruction add that integrated package makes its original seal break-off from the different thermal expansion that the materials variances of solenoid valve and each external connector causes, and increase leaks.So that the wind field attendant often will shut down maintenance and it is changed, seriously had influence on the generating efficiency of wind field.
Three, summary of the invention:
Purpose of the present invention be exactly to develop a kind of cost approach, simple and reliable, can effectively ensure when wind power generating set generating running the stable braking to the cabin; provide stable damping to the cabin in the time of going off course in the cabin again, guarantee that the cabin stablizes the yawing brake system of rotating Normally closed type weight pressurization control.
Solution of the present invention is: this braking system is by brake cylinder body 1, plunger 2, and brake spring 3, two-bit triplet solenoid valve 6, pressure release fuel tank 7, one-way valve 8, counterweight 9, supercharging plunger 10 and supercharging cylinder barrel 11 are formed by combining.It is characterized in that: brake spring 3 is contained between the top inner plane of the upper plane of plunger 2 and cylinder body 1; In the dead electricity position of two-bit triplet solenoid valve 6, plunger 2 is connected with supercharging cylinder barrel 11 by two-bit triplet solenoid valve 6 with top cavity volume between the brake cylinder body 1; Pressure release fuel tank 7 is connected with another interface of two-bit triplet solenoid valve 6.Two-bit triplet solenoid valve 6 current potential, plunger 2 is connected with pressure release fuel tank 7 by two-bit triplet solenoid valve 6 with top cavity volume between the brake cylinder body 1.Its working principle and process are: when running of wind generating set generates electricity, the stable braking force in cabin is provided jointly by the pressure that brake spring 3 and supercharging plunger 10 provide; Under this kind operating mode, the top cavity volume of plunger 2 and brake cylinder body 1 is connected with supercharging cylinder barrel 11 by the dead electricity position of solenoid valve 6, be directly delivered in the brake cylinder casing by the pressure that 10 effects of supercharging plunger produce by counterweight 9, act on the plunger 2, form total braking force with the spring force stack of brake spring 3, this active force is stably braked the cabin by braking tellurium sheet.When variation has occured wind direction, need driftage to aim at wind direction, slightly start prior to yaw motor, solenoid valve 6 gets electric commutation, plunger 2 and the top cavity volume of brake cylinder body 1 and being connected of supercharging cylinder barrel 11 have been cut off, plunger 2 is communicated with its earth pressure release with the pressure oil of the top cavity volume of brake cylinder body 1 with pressure release fuel tank 7; Only stay the braking force that brake spring 3 provides, provide stable damping to the cabin when going off course in the cabin, guarantee the stable revolution in cabin.Driftage finishes, solenoid valve 6 dead electricity, and plunger 2 is connected with top cavity volume and the supercharging cylinder barrel 11 of brake cylinder body 1, and the braking force that is provided by brake spring 3 adds the active force that is produced by supercharging plunger 10 by counterweight 9, to the stable braking in cabin.The pressure that 10 effects of supercharging plunger produce can be regulated by increase and decrease counterweight 9.Because the plunger of off-course brake 2 amount of movement under braking and two kinds of operating modes of yawing rotation is very little, does not need how many flows, and only need to can satisfy usage requirement by the increase and decrease of pressure.
Brake spring 3 can be each structural type such as helical spring, dish spring and cone spring.
In order to ensure effective operation of native system, can the stroke alarm switch be set to supercharging plunger 10.
It is Normally closed type weight pressurization control braking system that the present invention changes existing high pressure braking system open in usual, it has not had energy consumption, does not have temperature rise, has avoided the leakage that may bring because of temperature rise.It is more energy-conservation and reliable than original technology.More can prove conclusively the working environment of the normal operation of wind power generating set and generating efficiency and main frame not by oil pollution.If at the top cavity volume of plunger 2 and brake cylinder body 1 and supercharging cylinder barrel 11 and the higher fluid of pressure release fuel tank 7 perfusion viscosity, then more reliable effective.
Four, description of drawings:
Accompanying drawing 1 is structure principle chart of the present invention.
Five, embodiment:
The specific embodiment of the present invention is: when the wind power generating set normal power generation is moved, the stable braking force in cabin is provided jointly by the pressure that brake spring 3 and supercharging plunger 10 provide; Under this kind operating mode, the top cavity volume of plunger 2 and brake cylinder body 1 is connected with supercharging cylinder barrel 11 by the dead electricity position of solenoid valve 6, be directly delivered in the brake cylinder casing by the pressure that 10 effects of supercharging plunger produce by counterweight 9, act on the plunger 2, form total braking force with the spring force stack of brake spring 3, this active force is stably braked the cabin by braking tellurium sheet.When variation has occured wind direction, when needing driftage to aim at wind direction, slightly start prior to yaw motor, solenoid valve 6 gets electric commutation, and plunger 2 is communicated with its earth pressure release with the top cavity volume of brake cylinder body 1 with pressure release fuel tank 7; Only stay the braking force that brake spring 3 provides, provide stable damping to the cabin when going off course in the cabin, guarantee the stable revolution in cabin.Driftage finishes, solenoid valve 6 dead electricity, plunger 2 is connected with top cavity volume and the supercharging cylinder barrel 11 of brake cylinder body 1, the braking force that is provided by brake spring 3 adds that acting on the pressure that produces by counterweight 9 by supercharging plunger 10 has been directly delivered in the brake cylinder casing, act on the plunger 2, form total braking force, to the stable braking in cabin.
Claims (5)
1. a wind-powered electricity generation unit is with Normally closed type weight pressurization control yawing brake system, by brake cylinder body (1), plunger (2), brake spring (3), two-bit triplet solenoid valve (6), pressure release fuel tank (7), one-way valve (8), counterweight (9), supercharging plunger (10) and supercharging cylinder barrel (11) are formed by combining; It is characterized in that: brake spring (3) is contained between the top inner plane of the upper plane of plunger (2) and cylinder body (1); Dead electricity position at two-bit triplet solenoid valve (6), plunger (2) is connected with supercharging cylinder barrel (11) by two-bit triplet solenoid valve (6) with top cavity volume between the brake cylinder body (1), and pressure release fuel tank (7) is connected with another interface of two-bit triplet solenoid valve (6); Two-bit triplet solenoid valve (6) current potential, plunger (2) is connected with pressure release fuel tank (7) by two-bit triplet solenoid valve (6) with top cavity volume between the brake cylinder body (1).
2. a kind of wind-powered electricity generation unit according to claim 1 is with Normally closed type weight pressurization control yawing brake system, and it is characterized in that: brake spring (3) is the dish spring.
3. a kind of wind-powered electricity generation unit according to claim 1 is with Normally closed type weight pressurization control yawing brake system, and it is characterized in that: brake spring (3) is the cylinder spring.
4. a kind of wind-powered electricity generation unit according to claim 1 is with Normally closed type weight pressurization control yawing brake system, and it is characterized in that: brake spring (3) is the cone spring.
5. a kind of wind-powered electricity generation unit according to claim 1 is characterized in that: to supercharging plunger (10) setting position alarm switch with Normally closed type weight pressurization control yawing brake system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205911229U CN202867093U (en) | 2012-11-11 | 2012-11-11 | Normally closed type counterweight pressure-boost controlling yaw braking system for wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205911229U CN202867093U (en) | 2012-11-11 | 2012-11-11 | Normally closed type counterweight pressure-boost controlling yaw braking system for wind turbine generator |
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| Publication Number | Publication Date |
|---|---|
| CN202867093U true CN202867093U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205911229U Expired - Fee Related CN202867093U (en) | 2012-11-11 | 2012-11-11 | Normally closed type counterweight pressure-boost controlling yaw braking system for wind turbine generator |
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| Country | Link |
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| CN (1) | CN202867093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913387A (en) * | 2012-11-11 | 2013-02-06 | 杨洁 | Normally-closed type heavy hammer pressurization control yaw braking system for wind turbine generator |
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2012
- 2012-11-11 CN CN2012205911229U patent/CN202867093U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913387A (en) * | 2012-11-11 | 2013-02-06 | 杨洁 | Normally-closed type heavy hammer pressurization control yaw braking system for wind turbine generator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20131111 |