CN211874657U - Trigger device for testing overspeed unit of wind turbine generator - Google Patents
Trigger device for testing overspeed unit of wind turbine generator Download PDFInfo
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- CN211874657U CN211874657U CN202020399703.7U CN202020399703U CN211874657U CN 211874657 U CN211874657 U CN 211874657U CN 202020399703 U CN202020399703 U CN 202020399703U CN 211874657 U CN211874657 U CN 211874657U
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Abstract
The utility model discloses a trigger device for testing an overspeed unit of a wind turbine, which comprises a control unit, an alarm unit and a speed simulation unit, wherein the speed simulation unit comprises a motor, a voltage regulator, a simulation code disc and a Hall sensor, the voltage regulator is connected in series in a power supply loop of the motor, the simulation code disc comprises a turntable and magnetic steel, the simulation code disc is fixed on a transmission shaft of the motor, proximity switches of the Hall sensor and the overspeed unit are arranged at one side of the simulation code disc, the control unit is respectively and electrically connected with the alarm unit and the Hall sensor, pulse signals collected by the Hall sensor can control whether to trigger the alarm unit or not through the control unit, pulse signals collected by the proximity switches can determine whether to trigger the overspeed unit to act or not, further, the overspeed unit is tested, and the trigger device is utilized without modifying a bottom set value of a main, and the state of the overspeed unit can be tested quickly and effectively without disconnecting.
Description
Technical Field
The utility model particularly relates to a trigger device that is used for wind turbine generator system overspeed unit test.
Background
With the large consumption of primary energy such as petroleum and coal, wind energy is increasingly gaining attention as a clean energy.
The wind turbine generator system is the main part of wind energy conversion, it contains wind wheel and generator, drive the wind wheel through the generator and rotate and then realize the electricity generation, in order to ensure wind turbine generator system normal operating, present common detection mode is for guaranteeing the speed of generator in predetermineeing the within range through the overspeed protection module, start the rotational speed of overspeed unit when the speed of generator exceedes predetermineeing the scope and limit the generator, and then play the effect of protection generator, also promptly the overspeed unit can trigger the safe and reliable operation that can directly influence wind turbine generator system.
In order to test whether the overspeed unit can be started normally, and for safety, the following two schemes are generally adopted, namely: changing the overspeed trigger value to 5 revolutions per minute at the bottom layer of the main control program, and manually starting a paddle to test the overspeed unit; scheme II: simulating Overspeed 1 triggering by disconnecting the Overspeed/No. 13 port, simulating Overspeed 2 triggering by disconnecting the Overspeed/No. 11 port, and acquiring according to actual tests that the first scheme cannot truly reflect the rotating speed of the generator, other faults are easily caused by modifying the set value of the bottom layer of the main control program, and the second scheme is dangerous when being developed under the condition of high wind speed; therefore, based on the above problems, the present application provides a triggering device for testing an overspeed unit of a wind turbine.
Disclosure of Invention
The utility model discloses a trigger device for test of wind turbine generator system overspeed unit utilizes this trigger device to be needing not to modify main control program bottom setting value, also need not to test fast, effectual state to the overspeed unit under the condition of taking out stitches.
The utility model discloses a trigger device for wind turbine generator system overspeed unit test, contain the control unit, alarm unit and speed analog unit, wherein, speed analog unit contains motor (1), voltage regulator, simulation code wheel (2) and hall sensor (3), the voltage regulator concatenates and is used for adjusting the rotational speed of motor (1) in the power supply loop of motor (1), simulation code wheel (2) contain carousel (21) and set up at least one magnet steel (22) above that, should simulate code wheel (2) and fix on the transmission shaft of motor (1) and can rotate along with motor (1) synchronization, and hall sensor (3) and overspeed unit's proximity switch all set up in one side of simulation code wheel (2) and can produce pulse signal with magnet steel (22) effect, the control unit is connected with alarm unit and hall sensor (3) electricity respectively, the rotating speed of the analog coded disc (2) can be obtained by the aid of the action of the Hall sensor (3) and the magnetic steel (22), the control unit controls the alarm unit to give an alarm when the rotating speed of the analog coded disc (2) reaches an overspeed unit trigger value preset in the control unit, meanwhile, a proximity switch of the overspeed unit can also act with the magnetic steel (22) to obtain the rotating speed of the analog coded disc (2), and the overspeed unit is triggered to act when the rotating speed of the analog coded disc (2) reaches an actual trigger value of the overspeed unit, so that overspeed unit testing is achieved.
As a preferable scheme of the application, the control unit comprises an 89C51 singlechip (7), the alarm unit comprises an alarm circuit, and a signal input/output end of the alarm circuit is communicated with a P1.0 pin of the 89C51 singlechip (7); the Hall sensor (3) is an A3144 straight-through Hall element, and a signal output pin of the Hall sensor (3) is communicated with an INT0 pin, namely a P3.2 port, of the 89C51 singlechip (7).
The display device is characterized by further comprising a display (8) connected with the 89C51 singlechip (7), wherein the display 8 is a character type liquid crystal display, the signal input end of the display (8) is communicated with the Vcc pin, the pins P0.0-P0.7, the pins P2.6 and the pins P2.7 of the 89C51 singlechip (7), and the display (8) can be used for displaying the rotating speed of the analog code disc (2) in real time.
The control key (5) is connected with an 89C51 singlechip (7), the control key (5) comprises an upper limit adjusting key S3 and a lower limit adjusting key S4 which are used for adjusting the trigger value of a preset overspeed unit in the 89C51 singlechip (7), and the upper limit adjusting key S3 and the lower limit adjusting key S4 are connected in parallel with each other and are respectively communicated with an INT1 pin, namely a P3.3 port, and a T0 pin, namely a P3.4 port, of the 89C51 singlechip (7).
As a preferred solution of the present application, the voltage regulator comprises a potentiometer (6).
The USB trigger device further comprises a power supply which supplies required voltage to the trigger device, and the power supply is a USB power supply module (9).
As a preferable scheme of the application, the turntable (21) is of any one of a disc structure, an impeller structure or a strip structure; and/or the motor (1) is a micro direct current motor.
Compared with the prior art, this a trigger device for wind turbine generator system overspeed unit test exist in this application contain a bit:
1. the motor 1 is used for simulating the running of the generator 1 in the actual wind turbine generator to trigger the overspeed unit, so that the safety performance of the overspeed unit test is improved.
2. The set value of the bottom layer of the main control program does not need to be modified, and the wire does not need to be disconnected, so that the testing efficiency and the accuracy of the overspeed unit are improved.
3. The single chip microcomputer is used as a micro control system, and the rotating speed of the motor is displayed and monitored in real time, so that the overspeed test is more visual and visual.
4. Simple structure, low power consumption and convenient carrying.
Drawings
Fig. 1 is a structural diagram of a trigger device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an analog code wheel provided in an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of another analog code wheel provided in the first embodiment of the present invention.
Fig. 4 is a control circuit diagram of a 51-chip microcomputer according to an embodiment of the present invention.
Fig. 5 is a circuit diagram of an alarm unit according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a hall sensor according to an embodiment of the present invention.
Fig. 7 is a schematic circuit diagram of a USB power module according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of the speed regulation of the motor according to the first embodiment of the present invention.
Fig. 9 is a schematic circuit diagram of the upper and lower limit adjusting keys S1 and S2 connected in parallel according to the first embodiment of the present invention.
Fig. 10 is a schematic diagram of a liquid crystal display according to a second embodiment of the present invention.
Fig. 11 is a schematic view of an overall structure of a triggering device according to a third embodiment of the present invention.
Shown in the figure:
the device comprises a motor 1, an analog coded disc 2, a rotary disc 21, magnetic steel 22, a Hall sensor 3, an alarm 4, a control key 5, a potentiometer 6, a 51 single chip microcomputer 7, a display 8, a USB power supply module 9, a proximity switch 10 and an overspeed unit 11;
C1-C4 capacitors, R1-R7 resistors, Y1 crystal oscillators, LEDs, F1 buzzer, MG1 analog code disc 2, S2 switch of motor 1, P1 power module and S1 power switch.
Detailed Description
The preferred embodiments of the present invention will be described in detail below.
Example 1:
the embodiment provides a trigger device for testing an overspeed unit of a wind turbine generator, the trigger device comprises a control unit, an alarm unit and a speed simulation unit, in the embodiment, the control monolithic comprises an 89C51 monolithic computer 7 (51 monolithic computer for short), the 51 monolithic computer 7 has the functions of high speed, low power consumption, small volume and programmable pins, the alarm unit comprises an alarm 4 composed of a buzzer, an LED and the like, the speed simulation unit comprises a motor 1, a voltage regulator, an analog code disc 2 and a Hall sensor 3, the voltage regulator is connected in series in a power supply loop of the motor 1 and used for regulating the rotating speed of the motor 1, the voltage regulator is preferably a potentiometer 6 in the embodiment, the analog code disc 2 comprises a turntable 21 and at least one piece of magnetic steel 22 arranged on the turntable 21, the analog code disc 2 is fixed on a transmission shaft of the motor 1 and can rotate synchronously with the motor 1, and the Hall sensor 3 and a proximity switch of the overspeed unit are both arranged on one side of the analog code The control unit is respectively electrically connected with the alarm unit and the Hall sensor 3, the rotating speed of the analog coded disc 2 can be obtained by utilizing the action of the Hall sensor 3 and the magnetic steel 22, when the rotating speed of the analog coded disc 2 reaches a trigger value of an overspeed unit preset in the 51 singlechip 7, the 51 singlechip controls the alarm unit to alarm, meanwhile, a proximity switch of the overspeed unit can also act with the magnetic steel 22 to obtain the rotating speed of the analog coded disc 2, and when the rotating speed of the analog coded disc 2 reaches an actual trigger value of the overspeed unit, the overspeed unit is triggered to act, so that overspeed unit testing is realized, and referring to fig. 1, a composition structure diagram of the trigger device provided by the embodiment is provided; in this embodiment, the actual trigger value is a rotation speed value that is set in the wind turbine generator overspeed protection device and used for limiting the rotation speed of the generator, and when the rotation speed of the generator in the wind turbine generator reaches the actual trigger value, the overspeed unit acts to limit the rotation speed of the generator to avoid the rotation speed of the generator from increasing continuously, so that how to achieve the purpose of protecting the generator and the wind turbine generator.
In this embodiment, the rotating disc 21 is of any one of a disc structure, an impeller structure or a strip structure, and in this embodiment, the rotating disc 21 and the strip structure are preferably of a disc structure or a strip structure, and a piece of magnetic steel 22 is disposed on the rotating disc 21 and the strip structure, as shown in fig. 2 and 3.
In the present embodiment, for convenience of installation, the hall sensor 3 is preferably an a3144 straight hall element; referring to fig. 4-6, a control circuit diagram of the 51-chip microcomputer 7, an alarm circuit diagram of the alarm unit, and a schematic diagram of the hall sensor 3 provided in this embodiment are respectively provided, in which a signal input/output terminal of the alarm circuit is communicated with a pin P1.0 of the 89C 51-chip microcomputer 7, and the pin P1.0 is used as a signal output port to send an alarm enable signal to the alarm circuit; the signal output end of the hall sensor 3 is communicated with an INT0 pin, namely a P3.2 port, of the 89C51 singlechip 7, namely, a pulse signal generated by the hall sensor 3 is used as an interrupt request signal to trigger 51 the singlechip 7 to perform pulse counting.
In this embodiment, the power supply is included, the power supply provides the required voltage for the 51 single chip microcomputer 7 and the motor 1, preferably, the power supply is the USB power module 9 of DC5V, the implementation of the USB power module 9 is simple, no circuit needs to be built, a power switch S1 is connected in series in a power circuit of the USB power module 9, referring to fig. 7, a circuit schematic diagram of the USB power module 9 provided in this embodiment is provided, and the power switch S1 is used to control the power on and off of the whole trigger device; referring to fig. 8, a speed regulation schematic diagram of the motor 1 is provided for the present embodiment, in the diagram, the motor 1 is connected in series with the potentiometer 6 through a motor switch S2, the motor switch S2 is used for controlling the start and stop of the motor 1, and the potentiometer 6 is used for adjusting the input voltage of the motor 1, thereby adjusting the rotation speed of the analog code wheel.
In this embodiment, the control device further includes a control key 5 connected to the 51 single chip microcomputer 7, the control key 5 includes an upper limit adjustment key S3 and a lower limit adjustment key S4 for adjusting a preset overspeed unit trigger value in the 89C51 single chip microcomputer 7, the upper limit adjustment key S3 and the lower limit adjustment key S4 are connected in parallel with each other and are respectively connected to an INT1 pin, i.e., a P3.3 port, and a T0 pin, i.e., a P3.4 port, of the 89C51 single chip microcomputer 7, referring to fig. 9, when the control device is used, the trigger value preset in the 51 single chip microcomputer 7 in the overspeed unit can be adjusted by using the upper limit adjustment key S3 and the lower limit adjustment key S4 as required.
When the device is used, the trigger device is carried to the site, the approach switch of the overspeed unit of the tested fan is arranged on one side of the analog code disc 2 (on the same side as the Hall sensor 3), the power switch S1 and the motor switch S2 are closed, the input voltage of the motor 1 is adjusted through the potentiometer 6 so as to adjust the rotating speed of the motor, the Hall sensor 3 sends the collected pulse signal of the running of the analog code disc 2 to the 51 single chip microcomputer 7, a counter in the 51 single chip microcomputer 7 counts the pulse signal and converts the pulse signal into the rotating speed of the motor 1 or the analog code disc 2, when the rotating speed of the motor 1 or the analog code disc 2 is equal to the preset overspeed unit trigger value in the 51 single chip microcomputer, the 51 unit triggers the alarm 6 to alarm, and simultaneously, the approach switch of the overspeed unit also sends the collected pulse signal of the running of the analog code disc 2 to the corresponding, when the rotating speed of the analog coded disc 2 reaches the trigger value of the overspeed unit, the overspeed unit is triggered to act, so that the overspeed unit test is realized, and the specific test is as follows: and when the overspeed unit does not enter the working mode, determining that the overspeed unit is abnormal.
In conclusion, it can be known from analysis that the rotation speed of the micro motor 1 is adjusted by the potentiometer 6 in the embodiment, so that the micro motor 1 is used for simulating the operation of the generator 1 in the actual wind turbine generator, and compared with the prior art, the set value of the bottom layer of the main control program does not need to be modified, and the disconnection is also not needed, so that the safety performance, the test efficiency and the accuracy of the overspeed unit test are improved by using the trigger device in the embodiment, and meanwhile, the 51 single chip microcomputer 7 is used as a micro control system in the embodiment, so that the overspeed test is more visual and visual.
Example 2:
compared with the embodiment 1, in order to display the rotation speed of the motor 1 in real time and facilitate observation, it is preferable that the trigger device further includes a display 8, in this embodiment, the display 8 is preferably a character-type liquid crystal display 8, see fig. 10, which is a schematic diagram of the liquid crystal display 8 provided in this embodiment, a signal input end of the liquid crystal display 8 is communicated with a Vcc pin, P0.0-P0.7, P2.6 and P2.7 pins of the 89C51 single chip microcomputer 7, when in use, the display 8 can be used to display the rotation speed of the analog code wheel 2 or the motor 1 in real time, so that a worker can observe the current rotation speed of the motor 1 conveniently, and further adjust the voltage of the motor 1 more accurately.
Example 3:
the present embodiment provides a schematic diagram of the overall structure of a triggering device, see fig. 11, the triggering device includes a control unit, an alarm unit and a speed simulation unit, the alarm unit includes an alarm 4 composed of a buzzer, an LED, etc., the speed simulation unit includes a motor 1, a voltage regulator, an analog code disc 2 and a hall sensor 3, the voltage regulator is connected in series in a power supply loop of the motor 1 for adjusting the rotation speed of the motor 1, the voltage regulator is preferably a potentiometer 6 in the present embodiment, the analog code disc 2 includes a rotary disc 21 and at least one piece of magnetic steel 22 arranged thereon, the analog code disc 2 is fixed on a transmission shaft of the motor 1 and can rotate synchronously with the motor 1, the hall sensor 3 and a proximity switch of the overspeed unit are both arranged at one side of the analog code disc 2 and can act on the magnetic steel 22 to generate pulse signals, the control unit is electrically connected with the alarm unit and, when the rotating speed of the analog coded disc 2 acquired by the Hall sensor 3 reaches a preset overspeed unit trigger value in the 51 single chip microcomputer 7, the 51 single chip microcomputer 7 controls the alarm 4 to give an alarm, and meanwhile, when the rotating speed of the analog coded disc 2 acquired by the proximity switch of the overspeed unit exceeds the trigger value of the overspeed unit, the overspeed unit is triggered to act, so that overspeed unit testing is realized.
In this embodiment, in order to conveniently carry and avoid the exposure and damage of each component, an outer casing is preferably arranged, the outer casing comprises an operation panel, a power switch key, a motor switch key, an upper limit adjusting key, a lower limit adjusting key, a potentiometer 6 adjusting button, a display 8, an alarm 4 and the like are mounted on the operation panel, the analog coded disc 2 and the hall sensor 3 extend to the outside of one side of the outer casing, and other elements are located inside the outer casing, so that the portable electronic device can be conveniently carried and used.
In this embodiment, the outer casing may be a cylindrical structure or a square structure, and the specific structure is set according to actual needs, which is not specifically limited in this embodiment.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many changes and modifications can be made without departing from the inventive concept, and these changes and modifications all fall into the protection scope of the present invention.
Claims (10)
1. A trigger device for testing an overspeed unit of a wind turbine generator is characterized by comprising a control unit, an alarm unit and a speed simulation unit, wherein the speed simulation unit comprises a motor (1), a voltage regulator, a simulation code disc (2) and a Hall sensor (3), the voltage regulator is connected in series in a power supply loop of the motor (1) and used for adjusting the rotating speed of the motor (1), the simulation code disc (2) comprises a turntable (21) and at least one piece of magnetic steel (22) arranged on the turntable, the simulation code disc (2) is fixed on a transmission shaft of the motor (1) and can synchronously rotate along with the motor (1), proximity switches of the Hall sensor (3) and the overspeed unit are arranged on one side of the simulation code disc (2) and can act on the magnetic steel (22) to generate pulse signals, the control unit is respectively electrically connected with the alarm unit and the Hall sensor (3), the rotating speed of the analog coded disc (2) can be obtained by the aid of the action of the Hall sensor (3) and the magnetic steel (22), the control unit controls the alarm unit to give an alarm when the rotating speed of the analog coded disc (2) reaches an overspeed unit trigger value preset in the control unit, meanwhile, a proximity switch of the overspeed unit can also act with the magnetic steel (22) to obtain the rotating speed of the analog coded disc (2), and the overspeed unit is triggered to act when the rotating speed of the analog coded disc (2) reaches an actual trigger value of the overspeed unit, so that overspeed unit testing is achieved.
2. The trigger device for the wind turbine generator overspeed unit test is characterized in that the control unit comprises an 89C51 single chip microcomputer (7), the alarm unit comprises an alarm circuit, and a signal input/output end of the alarm circuit is communicated with a P1.0 pin of the 89C51 single chip microcomputer (7); the Hall sensor (3) is an A3144 straight-through Hall element, and a signal output pin of the Hall sensor (3) is communicated with an INT0 pin, namely a P3.2 port, of the 89C51 singlechip (7).
3. The trigger device for the wind turbine generator overspeed unit test according to claim 2, further comprising a display (8) connected to the 89C51 single chip microcomputer (7), wherein the display (8) is a character type liquid crystal display, a signal input terminal of the display (8) is communicated with the Vcc pin, P0.0-P0.7, P2.6 and P2.7 pins of the 89C51 single chip microcomputer (7), and the display (8) can be used for displaying the rotating speed of the analog code wheel (2) in real time.
4. The triggering device for the wind turbine generator overspeed unit test according to claim 2, further comprising a control button (5) connected to the 89C51 single chip microcomputer (7), wherein the control button (5) comprises an upper limit adjustment key S3 and a lower limit adjustment key S4 for adjusting a preset overspeed unit trigger value in the 89C51 single chip microcomputer (7), and the upper limit adjustment key S3 and the lower limit adjustment key S4 are connected in parallel with each other and respectively connected to an INT1 pin, i.e., a P3.3 port, and a T0 pin, i.e., a P3.4 port, of the 89C51 single chip microcomputer (7).
5. The triggering device for the wind turbine generator overspeed unit test according to any of claims 1 to 4, characterized in that the voltage regulator comprises a potentiometer (6).
6. The triggering device for the wind turbine generator overspeed unit test according to any one of claims 1 to 4, further comprising a power supply, wherein the power supply provides a required voltage for the triggering device, and the power supply is a USB power module (9).
7. The triggering device for the wind turbine generator overspeed unit test according to claim 5, further comprising a power supply, wherein the power supply provides a required voltage for the triggering device, and the power supply is a USB power module (9).
8. The triggering device for the wind turbine generator overspeed unit test according to any one of claims 1 to 4, characterized in that the turntable (21) is in any one of a disc structure, an impeller structure or a strip structure; and/or the motor (1) is a micro direct current motor.
9. The triggering device for the wind turbine generator overspeed unit test according to claim 5, wherein the turntable (21) is in any one of a disc structure, an impeller structure or a strip structure; and/or the motor (1) is a micro direct current motor.
10. The triggering device for the wind turbine generator overspeed unit test according to claim 6, wherein the turntable (21) is in any one of a disc structure, an impeller structure or a strip structure; and/or the motor (1) is a micro direct current motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399703.7U CN211874657U (en) | 2020-03-25 | 2020-03-25 | Trigger device for testing overspeed unit of wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399703.7U CN211874657U (en) | 2020-03-25 | 2020-03-25 | Trigger device for testing overspeed unit of wind turbine generator |
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| Publication Number | Publication Date |
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| CN211874657U true CN211874657U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020399703.7U Active CN211874657U (en) | 2020-03-25 | 2020-03-25 | Trigger device for testing overspeed unit of wind turbine generator |
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| CN (1) | CN211874657U (en) |
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