CN215805483U - High-speed shaft braking device of wind driven generator - Google Patents
High-speed shaft braking device of wind driven generator Download PDFInfo
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- CN215805483U CN215805483U CN202122384111.5U CN202122384111U CN215805483U CN 215805483 U CN215805483 U CN 215805483U CN 202122384111 U CN202122384111 U CN 202122384111U CN 215805483 U CN215805483 U CN 215805483U
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- 239000003921 oil Substances 0.000 claims abstract description 57
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model provides a high-speed shaft braking device of a wind driven generator, which comprises: the oil supply device comprises an oil supply assembly, a control assembly and an actuating mechanism. The oil supply assembly comprises an oil tank and a motor pump set, wherein the oil tank is used for storing hydraulic oil, and the motor pump set is connected to the oil tank and used for conveying the hydraulic oil. The control assembly comprises a first one-way valve, a throttle valve and an electromagnetic valve, and an outlet of the motor pump set is sequentially connected with the first one-way valve and the throttle valve. The electromagnetic valve is a two-position three-way valve and is provided with a port P, a port T and a port A, when the electromagnetic valve is electrified, the port P is communicated with the port A, and the port T is disconnected; when the electromagnetic valve is de-energized, the T port is communicated with the A port, and the P port is disconnected. The P port is connected with the outlet of the throttle valve, and the T port is connected with the oil tank. The actuating mechanism is two hydraulic cylinders, the rod cavities of the two hydraulic cylinders are communicated with each other, and the port A is connected with the rodless cavities of the two hydraulic cylinders. The device can safely and reliably brake the high-speed shaft of the wind driven generator.
Description
Technical Field
The utility model relates to a high-speed shaft braking device of a wind driven generator.
Background
The wind generating set integrated brake hydraulic unit is generally operated in a severe environment, and the operation period is long. The power device of the wind generating set integrated brake hydraulic unit mainly has the function of driving a high-speed shaft brake actuating mechanism, and is an active brake system. However, the existing power device has the problems of dispersed hydraulic units for providing power, unstable power, low reliability, poor safety and inconvenient maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of low reliability, poor safety and inconvenience in maintenance of a high-speed shaft braking device of a wind driven generator in the prior art, and provides the high-speed shaft braking device of the wind driven generator, which can solve the problems.
The utility model solves the technical problems through the following technical scheme:
a high-speed shaft braking device of a wind driven generator is characterized by comprising:
the oil supply assembly comprises an oil tank and a motor pump set, wherein the oil tank is used for storing hydraulic oil, and the motor pump set is connected to the oil tank and used for conveying the hydraulic oil;
the control assembly comprises a first one-way valve, a throttle valve and an electromagnetic valve, wherein an outlet of the motor pump set is sequentially connected with the first one-way valve and the throttle valve, the electromagnetic valve is a two-position three-way valve and is provided with a P port, a T port and an A port, when the electromagnetic valve is electrified, the P port is communicated with the A port, and the T port is disconnected; when the electromagnetic valve is powered off, the T port is communicated with the port A, and the P port is disconnected; the port P is connected with an outlet of the throttling valve, and the port T is connected with the oil tank;
the actuating mechanism is composed of two hydraulic cylinders, rod cavities of the two hydraulic cylinders are communicated with each other, and the port A is connected with the rodless cavities of the two hydraulic cylinders.
Preferably, the control assembly further comprises an overflow valve, an inlet of the overflow valve is connected with an inlet of the first check valve, and an outlet of the overflow valve is connected with the oil tank.
Preferably, both ends of the overflow valve are connected in parallel with a normally closed first stop valve.
Preferably, the oil supply assembly further comprises a manual pump, an inlet of the manual pump is connected to the oil tank, and an outlet of the manual pump is connected to an inlet of the first check valve.
Preferably, a second one-way valve is connected between the manual pump and the inlet of the first one-way valve.
Preferably, a filter assembly and a third one-way valve are connected between the motor-pump set and the first one-way valve, and the filter assembly comprises a filter, a fourth one-way valve and a differential pressure transmitter which are connected in parallel.
Preferably, the control assembly further comprises an accumulator connected between the third one-way valve and the first one-way valve.
Preferably, a second normally open stop valve is connected between the accumulator and the first check valve.
Preferably, the control assembly further comprises a pressure switch connected to the port a, and the pressure switch is in communication connection with the motor-pump set.
Preferably, the oil tank is provided with a liquid level meter.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the utility model.
The positive progress effects of the utility model are as follows: the device can stably and reliably control the braking of the high-speed shaft of the wind driven generator, and is convenient to maintain.
Drawings
FIG. 1 is a hydraulic schematic diagram of a high-speed shaft brake device of a wind turbine generator according to a preferred embodiment of the present invention.
Description of reference numerals:
Motor-pump unit 120
P port 231
A port 233
Pressure difference signal transmitter 263
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
Fig. 1 shows a high-speed shaft brake device of a wind driven generator, which comprises: oil supply unit 100, control unit 200, and actuator 300. The oil supply assembly 100 includes an oil tank 110, a motor-pump unit 120, the oil tank 110 storing hydraulic oil, and the motor-pump unit 120 connected to the oil tank 110 and delivering the hydraulic oil. The control assembly 200 includes a first check valve 210, a throttle valve 220, and a solenoid valve 230, and an outlet of the motor-pump stack 120 is connected to the first check valve 210, the throttle valve 220 in turn. The electromagnetic valve 230 is a two-position three-way valve, the electromagnetic valve 230 is provided with a P port 231, a T port 232 and an A port 233, when the electromagnetic valve 230 is electrified, the P port 231 is communicated with the A port 233, and the T port 232 is disconnected; when the solenoid valve 230 is de-energized, the port T232 communicates with the port a 233, and the port P231 is disconnected. The P port 231 is connected to the outlet of the throttle valve 220, and the T port 232 is connected to the oil tank 110. The actuator 300 is composed of two hydraulic cylinders 310, rod cavities of the two hydraulic cylinders 310 are communicated with each other, and the A port 233 is connected with rodless cavities of the two hydraulic cylinders 310.
When braking of the high speed shaft is required, the motor-pump set 120 draws hydraulic oil from the oil tank 110 and delivers it to the first check valve 210, the throttle valve 220 and the solenoid valve 230. When the electromagnetic valve 230 is energized, hydraulic oil is input from the P port 231 and output from the a port 233 to finally reach the rodless chambers of the two hydraulic cylinders 310, and the hydraulic cylinders 310 are driven to brake the high-speed shaft. When braking needs to be stopped, the electromagnetic valve 230 is de-energized, and hydraulic oil in the rodless cavity of the hydraulic cylinder 310 flows back to the oil tank 110 through the A port 233 and the T port 232. The throttle valve 220 is used to control the flow rate of hydraulic oil entering the rodless chamber of the hydraulic cylinder 310, thereby ensuring stability and safety of braking. The first check valve 210 can prevent the reverse flow of the hydraulic oil to achieve the pressure maintaining effect.
The control assembly 200 further includes an overflow valve 240, an inlet of the overflow valve 240 is connected to an inlet of the first check valve 210, and an outlet of the overflow valve 240 is connected to the oil tank 110. In this scheme, overflow valve 240 sets the overflow pressure to 160bar, mainly uses as system safety valve, prevents that system pressure is too high, causes components and parts to damage. Both ends of the relief valve 240 are connected in parallel with a normally closed first shut-off valve 250. After the first stop valve 250 is opened, the system pressure can be manually discharged, the debugging speed can be accelerated in the debugging process, and the safety of the power device is ensured.
In order to further improve the reliability of the present device, the oil supply unit 100 further includes a manual pump 130, an inlet of the manual pump 130 is connected to the oil tank 110, and an outlet of the manual pump 130 is connected to an inlet of the first check valve 210. An emergency oil source can be provided through the manual pump 130, and emergency oil supply is achieved. A second check valve 140 is connected between the manual pump 130 and the inlet of the first check valve 210. A second check valve 140 is provided in the manual outlet line and serves primarily to prevent excessive pressure on the brake line from damaging the manual pump 130.
A filter assembly 260 and a third check valve 270 are connected between the motor-pump set 120 and the first check valve 210, and the filter assembly 260 includes a filter 261, a fourth check valve 262 and a differential pressure transmitter 263, which are connected in parallel. The filter 261 can effectively prevent the solid particles with larger diameters from entering a working oil path and the actuating mechanism 300 to cause oil path blockage or valve clamping and other faults, the safety of the device is ensured, and the service life is prolonged. The fourth check valve 262 is arranged on the bypass of the filter 261, and has the function that when the filter 261 is blocked, the oil can still pass through the bypass oil path, so that the oil cannot be blocked. The pressure difference signal generator 263 is used to send out an alarm signal in time to remind the operator to replace or clean the filter 261.
The control assembly 200 further includes an accumulator 281, the accumulator 281 being connected between the third check valve 270 and the first check valve 210. Accumulator 281 may provide emergency charging oil replenishment for the hydraulic unit. Under the condition of power failure of the motor pump unit 120, hydraulic oil can be provided for a high-speed shaft brake loop, the pressure maintaining effect on the system is achieved, meanwhile, the pulsation of the system is absorbed, the system can work for a long time in a severe environment, the reliability is high, and the stability and the safety of the device are guaranteed. The accumulator 281 is located at the outlet of the third check valve 270, effectively preventing the accumulator 281 from flowing back to the tank 110. A second normally open shut-off valve 282 is connected between the accumulator 281 and the first check valve 210. The oil intake and oil discharge of accumulator 281 can be controlled by second shut-off valve 282.
To ensure brake pressure stability, the control assembly 200 further includes a pressure switch 291, the pressure switch 291 is connected to the a port 233, and the pressure switch 291 is connected in communication with the motor-pump assembly 120. When the brake pressure is too small, the pressure switch 291 controls the motor-pump set 120 to start, so as to pressurize the system. Meanwhile, when a fault occurs, the pressure switch 291 can prevent the system from being pressed all the time, so that destructive loss of the system is caused, and personal and property safety is damaged.
In this scheme, be equipped with level gauge 150 on the oil tank 110, can detect the liquid level of oil tank 110, the staff can audio-visually see the height of fluid, improves this security and stability. An air cleaner 160 is provided at the top of the oil tank 110, and the air cleaner 160 communicates with the inside of the oil tank 110. Realize through air cleaner 160 that gaseous entering oil tank 110 is inside, effectively prevent that great granule from entering into fluid, improve this device security.
In order to facilitate pressure detection of the working oil path, a pressure gauge 292 and a pressure sensor 293 are installed on the oil path of the device. The pressure of the working oil way can be directly displayed through the pressure gauge 292, so that the working personnel can control the pressure according to the pressure condition, and the safety and the stability of the power device are ensured. The pressure sensor 293 can monitor the pressure of the working oil path in the whole process and in a remote way.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (10)
1. A wind-driven generator high-speed shaft braking device is characterized by comprising:
the oil supply assembly comprises an oil tank and a motor pump set, wherein the oil tank is used for storing hydraulic oil, and the motor pump set is connected to the oil tank and used for conveying the hydraulic oil;
the control assembly comprises a first one-way valve, a throttle valve and an electromagnetic valve, wherein an outlet of the motor pump set is sequentially connected with the first one-way valve and the throttle valve, the electromagnetic valve is a two-position three-way valve and is provided with a P port, a T port and an A port, when the electromagnetic valve is electrified, the P port is communicated with the A port, and the T port is disconnected; when the electromagnetic valve is powered off, the T port is communicated with the port A, and the P port is disconnected; the port P is connected with an outlet of the throttling valve, and the port T is connected with the oil tank;
the actuating mechanism is composed of two hydraulic cylinders, rod cavities of the two hydraulic cylinders are communicated with each other, and the port A is connected with the rodless cavities of the two hydraulic cylinders.
2. The wind driven generator high-speed shaft brake device as claimed in claim 1, wherein the control assembly further comprises an overflow valve, an inlet of the overflow valve is connected with an inlet of the first check valve, and an outlet of the overflow valve is connected with the oil tank.
3. The high-speed shaft brake device of the wind driven generator as claimed in claim 2, wherein a normally closed first stop valve is connected in parallel to both ends of the overflow valve.
4. The wind turbine high speed shaft brake apparatus according to claim 1, wherein the oil supply unit further comprises a manual pump, an inlet of the manual pump is connected to the oil tank, and an outlet of the manual pump is connected to an inlet of the first check valve.
5. The wind turbine high speed shaft brake apparatus according to claim 4, wherein a second check valve is connected between the manual pump and an inlet of the first check valve.
6. The wind driven generator high-speed shaft brake device as claimed in claim 1, wherein a filter assembly and a third one-way valve are connected between the motor-pump set and the first one-way valve, and the filter assembly comprises a filter, a fourth one-way valve and a differential pressure transmitter which are connected in parallel.
7. The wind turbine high speed shaft brake assembly as set forth in claim 6, wherein said control assembly further comprises an accumulator connected between said third check valve and said first check valve.
8. The wind turbine high speed shaft brake assembly as claimed in claim 7, wherein a second normally open shut-off valve is connected between said accumulator and said first check valve.
9. The wind turbine high speed shaft brake assembly as claimed in claim 1, wherein the control assembly further comprises a pressure switch connected to the a port, the pressure switch being in communication with the motor-pump set.
10. The wind turbine high speed shaft brake apparatus according to claim 1, wherein a liquid level gauge is attached to the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384111.5U CN215805483U (en) | 2021-09-29 | 2021-09-29 | High-speed shaft braking device of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384111.5U CN215805483U (en) | 2021-09-29 | 2021-09-29 | High-speed shaft braking device of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215805483U true CN215805483U (en) | 2022-02-11 |
Family
ID=80168074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122384111.5U Active CN215805483U (en) | 2021-09-29 | 2021-09-29 | High-speed shaft braking device of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215805483U (en) |
-
2021
- 2021-09-29 CN CN202122384111.5U patent/CN215805483U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High-speed shaft brake device of wind turbine Effective date of registration: 20230105 Granted publication date: 20220211 Pledgee: Agricultural Bank of China Limited Shanghai Songjiang Sub-branch Pledgor: Shanghai shengkesisi Hydraulic Co.,Ltd. Registration number: Y2023980030417 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220211 Pledgee: Agricultural Bank of China Limited Shanghai Songjiang Sub-branch Pledgor: Shanghai shengkesisi Hydraulic Co.,Ltd. Registration number: Y2023980030417 |