CN217841893U - Hydraulic braking device of wind turbine generator - Google Patents
Hydraulic braking device of wind turbine generator Download PDFInfo
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- CN217841893U CN217841893U CN202222456044.8U CN202222456044U CN217841893U CN 217841893 U CN217841893 U CN 217841893U CN 202222456044 U CN202222456044 U CN 202222456044U CN 217841893 U CN217841893 U CN 217841893U
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- valve
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- oil
- electromagnetic valve
- pressure reducing
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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 discloses a hydraulic braking device of a wind turbine generator, which comprises an oil pump, a pressure reducing valve, a first electromagnetic valve, a throttle valve, two main shaft brake oil cylinders, an external oil tank and a second electromagnetic valve; the oil pump is connected with a first electromagnetic valve pipeline through a pressure reducing valve, a first one-way valve is arranged on a connecting pipeline of the oil pump and the pressure reducing valve, and a second one-way valve and a throttling plug are arranged on a connecting pipeline of the pressure reducing valve and the first electromagnetic valve; the first electromagnetic valve is connected with the oil cylinder pipeline through a throttle valve; the oil cylinder is connected with an external oil tank pipeline through a second electromagnetic valve. Has the advantages that: the hydraulic system main shaft brake device has the advantages that the pressure reducing valve is adopted, hydraulic oil in a pipeline is automatically conducted when the pressure of the hydraulic oil exceeds a set pressure, the hydraulic oil is discharged to an external oil tank, operation faults caused by overlarge pipeline pressure of the hydraulic system are prevented, the flow speed of the hydraulic oil in the pipeline is balanced by the throttle valve, the oil cylinder pushes out the piston rod smoothly, and accordingly stability of a hydraulic system main shaft during braking is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of wind power generation, concretely relates to wind turbine generator system hydraulic braking device.
Background
The hydraulic brake device of the wind driven generator mainly comprises a main shaft brake device and a yaw brake device.
When a hydraulic system of the main shaft brake device brakes, the hydraulic system is usually broken down due to overhigh pressure in a pipeline of the hydraulic system, or the brake force is overlarge or insufficient due to uneven speed of hydraulic oil which is led into a main shaft brake oil cylinder.
The main shaft brake device of the wind power generation hydraulic system needs to be provided, so that the pressure and the flow rate of hydraulic oil in a pipeline of a hydraulic control system are controlled, and the normal and stable work of the main shaft brake device is ensured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wind turbine generator system hydraulic braking device to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a hydraulic braking device of a wind turbine generator comprises an oil pump, a pressure reducing valve, a first electromagnetic valve, a throttle valve, two main shaft braking oil cylinders, an external oil tank and a second electromagnetic valve; the oil pump is connected with the first electromagnetic valve through the pressure reducing valve, a first one-way valve is arranged on a connecting pipeline of the oil pump and the pressure reducing valve, and a second one-way valve and a throttling plug are sequentially arranged on the connecting pipeline of the pressure reducing valve and the first electromagnetic valve; the first electromagnetic valve is connected with the oil cylinder pipeline through the throttle valve; the oil cylinder is connected with the external oil tank pipeline through the second electromagnetic valve, and the second electromagnetic valve is connected between the first electromagnetic valve and the throttle valve pipeline through a pipeline.
Preferably, a filter is provided in a connection pipe between the oil pump and the first check valve.
Preferably, the pressure reducing valve is provided with a pressure reducing valve and is connected with the external oil tank through a pipeline between the second electromagnetic valve and the external oil tank.
Preferably, the first electromagnetic valve and the second electromagnetic valve are both two-position two-way electromagnetic valves.
Preferably, a pipeline between the throttle valve and the oil cylinder is connected with a pressure switch and a pressure measuring joint.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the hydraulic system main shaft brake device has the advantages that the pressure reducing valve is adopted, hydraulic oil in a pipeline is automatically conducted when the pressure of the hydraulic oil exceeds a set pressure, the hydraulic oil is discharged to an external oil tank, operation faults caused by overlarge pipeline pressure of the hydraulic system are prevented, the flow speed of the hydraulic oil in the pipeline is balanced by the throttle valve, the oil cylinder pushes out the piston rod smoothly, and accordingly stability of a hydraulic system main shaft during braking is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 10. an oil pump; 11. a pressure reducing valve; 12. a filter; 13. a first check valve; 14. a second check valve; 15. a throttle plug; 20. a first solenoid valve; 21. a throttle valve; 22. a pressure switch; 23. a pressure measuring joint; 30. an oil cylinder; 40. an external fuel tank; 50. a second solenoid valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example 1: referring to fig. 1, the present invention provides a technical solution: a hydraulic braking device of a wind turbine generator comprises an oil pump 10, a pressure reducing valve 11, a first electromagnetic valve 20, a throttle valve 21, two main shaft brake oil cylinders 30, an external oil tank 40 and a second electromagnetic valve 50; the oil pump 10 is in pipeline connection with the first electromagnetic valve 20 through the pressure reducing valve 11, a first one-way valve 13 is arranged on a connecting pipeline between the oil pump 10 and the pressure reducing valve 11, a second one-way valve 14 and a throttling plug 15 are sequentially arranged on the connecting pipeline between the pressure reducing valve 11 and the first electromagnetic valve 20, and the first one-way valve 13 and the second one-way valve 14 prevent hydraulic oil in the pipelines from flowing back; the first electromagnetic valve 20 is in pipeline connection with the oil cylinder 30 through the throttle valve 21; the oil cylinder 30 is connected with the external oil tank 40 through the second electromagnetic valve 50, the second electromagnetic valve 50 is connected between the first electromagnetic valve 20 and the throttle valve 21 through a pipeline, and the pressure reducing valve 11 is automatically conducted when hydraulic oil in the pipeline exceeds a set pressure, so that the hydraulic system is prevented from running failure due to overlarge pipeline pressure.
Specifically, a filter 12 is provided on a connection pipe between the oil pump 10 and the first check valve 13; in this embodiment, the filter 12 filters out hydraulic oil impurities in the lines, thereby preventing the impurities from precipitating and scaling in the lines.
Specifically, a pressure relief valve is installed on the pressure reducing valve 11, and is connected to the external oil tank 40 through a pipeline between the second electromagnetic valve 50 and the external oil tank 40; in this embodiment, the pressure reducing valve 11 is automatically opened when the hydraulic oil in the line exceeds a set pressure, and discharges the hydraulic oil to the external oil tank 40.
Specifically, the first solenoid valve 20 and the second solenoid valve 50 are both two-position two-way solenoid valves; in this embodiment, the cost is low, the volume is small, the power consumption is low, and the method is economical and practical.
Specifically, a pressure switch 22 and a pressure measuring joint 23 are connected to a pipeline between the throttle valve 21 and the oil cylinder 30; in this embodiment, the pressure switch 22 and the pressure tap 23 indicate whether they are in a normal operating state.
For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.
The working principle is as follows: when the wind driven generator needs to be stopped and braked, the first electromagnetic valve 20 and the second electromagnetic valve 50 are both in a power-off state, at the moment, the left path of the first electromagnetic valve 20 is conducted, and the second electromagnetic valve 50 is closed. When the hydraulic oil provided by the oil pump 10 passes through the pressure reducing valve 11, the pressure is a set value, and then passes through the first check valve 13, the throttle plug 15 and the left passage of the first electromagnetic valve 20, and since the second electromagnetic valve 50 is in a closed state, all the hydraulic oil enters the rodless cavity of the main shaft brake cylinder 30 through the throttle valve 21, so that the piston rod extends out, and the main shaft of the wind driven generator is braked.
When the wind driven generator restarts to operate, the first electromagnetic valve 20 and the second electromagnetic valve 50 are both in a power-on state, at this time, the first electromagnetic valve 20 is closed, the second electromagnetic valve 50 is conducted, the first electromagnetic valve 20 is in a closed state, at this time, no hydraulic oil enters the main shaft brake oil cylinder 30, meanwhile, the second electromagnetic valve 50 is in a conducting state, the hydraulic oil of the main shaft brake oil cylinder 30 flows back to the external oil tank 40 through the second electromagnetic valve 50 through an oil drainage port, and a piston rod of the oil cylinder 30 retracts under the action of a spring force, so that the main shaft brake of the wind driven generator is released.
After the push rod of the main shaft brake cylinder 30 retracts to a stable position, the second electromagnetic valve 50 loses power, and the first electromagnetic valve 20 is always in a power-on state in the whole process of normal operation of the wind driven generator.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A hydraulic braking device of a wind turbine generator is characterized by comprising an oil pump (10), a pressure reducing valve (11), a first electromagnetic valve (20), a throttle valve (21), two main shaft braking oil cylinders (30), an external oil tank (40) and a second electromagnetic valve (50); the oil pump (10) is connected with the first electromagnetic valve (20) through the pressure reducing valve (11) in a pipeline manner, a first one-way valve (13) is arranged on a connecting pipeline between the oil pump (10) and the pressure reducing valve (11), and a second one-way valve (14) and a throttling plug (15) are sequentially arranged on the connecting pipeline between the pressure reducing valve (11) and the first electromagnetic valve (20); the first electromagnetic valve (20) is connected with the oil cylinder (30) through a pipeline of the throttle valve (21); the oil cylinder (30) is connected with the external oil tank (40) through the second electromagnetic valve (50) in a pipeline mode, and the second electromagnetic valve (50) is connected between the first electromagnetic valve (20) and the throttle valve (21) in a pipeline mode.
2. Hydraulic braking device for wind turbines according to claim 1, characterized in that a filter (12) is provided on the connection line between said oil pump (10) and said first non-return valve (13).
3. The hydraulic braking device for the wind turbine generator according to claim 1, wherein a pressure relief valve is mounted on the pressure relief valve (11) and is connected with the external oil tank (40) through a pipeline between the second electromagnetic valve (50) and the external oil tank (40).
4. The hydraulic braking device of a wind turbine generator according to claim 1, wherein the first solenoid valve (20) and the second solenoid valve (50) are both two-position two-way solenoid valves.
5. The hydraulic braking device for the wind turbine generator according to claim 1, wherein a pressure switch (22) and a pressure measuring joint (23) are connected to a pipeline between the throttle valve (21) and the oil cylinder (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222456044.8U CN217841893U (en) | 2022-09-16 | 2022-09-16 | Hydraulic braking device of wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222456044.8U CN217841893U (en) | 2022-09-16 | 2022-09-16 | Hydraulic braking device of wind turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217841893U true CN217841893U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222456044.8U Active CN217841893U (en) | 2022-09-16 | 2022-09-16 | Hydraulic braking device of wind turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217841893U (en) |
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2022
- 2022-09-16 CN CN202222456044.8U patent/CN217841893U/en active Active
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