CN106988968A - Wind power plant wind wheel mechanical lock is to aperture apparatus - Google Patents

Abstract

The invention discloses a kind of wind power plant wind wheel mechanical lock to aperture apparatus.Pin hole both sides on impeller of blower are respectively arranged with first position sensor and second place sensor, speed probe is arranged on impeller of blower, rotating speed for monitoring blower fan, Control end, speed probe, first position sensor and second place sensor are connected with single chip control module, relay is connected to civil power two ends through magnetic valve and indicator lamp, and hand switch wired in parallel is at the two ends of relay；Also include signal acquisition module and electromagnetism adhesive module, speed probe, first position sensor and second place sensor are connected through respective identical signal acquisition module and single chip control module, and magnetic valve and relay are connected through electromagnetism adhesive module and single chip control module.The present invention can allow to be automatically performed mechanical pins insertion work, it is possible to increase operating efficiency, reduce hand labor intensity.

Description

Wind turbine mechanical lock alignment device for wind power generation equipment

technical field

The invention relates to the technical field of wind power generator equipment, in particular to the technical field of a wind wheel mechanical lock alignment device for wind power generator equipment.

Background technique

When the wind turbine enters the hub for inspection and maintenance, it needs to be manually shut down normally, and then the mechanical lock of the wind rotor is locked, so that the operator can enter the hub for maintenance. The normal shutdown of the fan depends on the pneumatic shutdown of the blade feathering; the high-speed brake is put into use in an emergency, and it is used when the wind rotor needs to be locked and does not rotate during shutdown; the mechanical lock of the wind rotor is used when the staff needs to enter the hub for maintenance. The diameter of the mechanical pin is 80mm, and the hole diameter of the wind wheel is 85mm. Since the reserved hole diameter margin is too small, it is very difficult to insert the mechanical pin. However, the margin reserved in the design is too large. When the wind is strong, the rotation of the hub will make the wind wheel hole Both sides strike mechanical pins. After the fan stops, two workers cooperate with each other, one is responsible for operating the brake, and the other is responsible for aligning the holes and locking the mechanical pins. When the person in charge of aligning the hole visually checks that the hole of the wind wheel turns to the position of the mechanical pin, he shouts a password to let the brake personnel perform the brake immediately. However, after the wind rotor is feathered and shut down, the rotation speed is irregular, sometimes fast and sometimes slow, which affects the visual inspection personnel. The password is called too early, and the brake is advanced, and the hole of the wind wheel has not yet reached the position of the mechanical pin; the password is called late, and the brake It was too late, and the hole of the wind wheel had already rotated past the position of the mechanical pin. Braking too early or too late will not allow the wind wheel hole to stop at the position of the mechanical pin, so that the mechanical pin cannot be inserted into the hole. It takes up to half an hour to do the work repeatedly. Occasionally, one or two operations are done by luck, which brings great difficulties in terms of time and personnel energy.

Contents of the invention

The purpose of the present invention is to solve the problems in the prior art, and propose a wind turbine mechanical lock alignment device for wind power generation equipment, which can automatically complete the mechanical pin insertion work, improve work efficiency, and reduce manual labor intensity.

For realizing the above object, technical scheme of the present invention is:

The invention includes a single-chip microcomputer control module, a rotational speed sensor, a first position sensor, a second position sensor, a relay, a manual switch module, a solenoid valve and an indicator light. The position sensor and the speed sensor are installed on the fan wheel to monitor the speed of the fan. The relay control terminal, the speed sensor, the first position sensor and the second position sensor are all connected to the single-chip control module, and the relay is connected to the The two ends of the commercial power, the manual switch module are connected in parallel at the two ends of the relay, and the indicator light is connected in series with the solenoid valve.

Further, the present invention also includes a signal acquisition module and an electromagnetic pull-in module, the rotational speed sensor, the first position sensor and the second position sensor are all connected through the same signal acquisition module and the single-chip microcomputer control module respectively, and the solenoid valve and the relay are connected through the electromagnetic pull-in The module is connected with the single-chip microcomputer control module.

The single-chip microcomputer control module includes the single-chip microcomputer U2, the XTAL1 pin and the XTAL2 pin of the single-chip microcomputer U2 are connected in series with the crystal oscillator Y1, the XTAL1 pin and the XTAL2 pin are respectively grounded through the capacitor C3 and the capacitor C2, and the waveform generator composed of the capacitor C2, the capacitor C3 and the crystal oscillator Y1; the single-chip microcomputer U2 The RST pin of the RST pin is grounded to VCC after the resistor R7 and the capacitor C4, and the resistor R7 and the capacitor C4 are connected to form a reset signal generator; the P1.0 pin or P1.2 pin of the single-chip microcomputer U2 is used as an output port (output Vout1 and Vout2), It is connected to the relay through the electromagnetic pull-in module; the P1.5, P0.1 or P0.2 pin of the single-chip microcomputer U2 is used as an input (input Vin1, Vin2 and Vin3) to connect to the signal acquisition module and receive the collected voltage value.

The signal acquisition module includes sensor psd1, resistors R1~R6, capacitor C1 and sliding rheostat R2, one end of sensor psd1 is grounded, the other end is connected to the reverse input terminal of amplifier U1A, the reverse input terminal of amplifier U1A is grounded through resistor R4, and the reverse input terminal of amplifier U1A The forward input end is grounded through resistor R5, the reverse input end of amplifier U1A is connected to its own output end through resistor R1; the output end of amplifier U1A is connected to the reverse input end of amplifier U1B through resistor R3, and the forward input end of amplifier U1B The input terminal is grounded through resistor R6, the reverse input terminal of amplifier U1B is connected to its own output terminal through resistor R2, the output terminal of amplifier U1B is grounded through capacitor C1, and the output terminal of amplifier U1B is used as the output terminal of the signal acquisition module and connected to the microcontroller On the microcontroller U2 of the control module.

The sensor psd1 is a rotational speed sensor, a first position sensor or a second position sensor.

The electromagnetic pull-in module includes resistor R8, relay K1, triode Q1, indicator light DS1 and solenoid valve. The base of the triode Q1 is connected to the single-chip microcomputer U2 of the single-chip microcomputer control module, and the collector of the triode Q1 is connected to the resistor R8 after passing through the coil of the relay K1. , the emitter of the triode Q1 is grounded, and the pull-in terminal of the relay K1 is connected in series with the solenoid valve and the indicator light between the power supply and the ground.

The electromagnetic valve is connected to the electromagnetic latch in the latch hole, and is used to control and push the electromagnetic latch to lock the fan, so that the fan stops rotating. The electromagnetic valve is used to reduce the speed of the fan, and the electromagnetic latch makes the latch inserted into the air of the wind wheel, so that the wind wheel is locked and stops rotating.

The rotational speed sensor is used to monitor the rotational speed of the fan, and the first position sensor and the second position sensor will start to work only when the rotational speed of the fan is lower than a preset value.

The first position sensor and the second position sensor are respectively arranged on both sides of the pin hole on the fan wheel, and when both the first position sensor and the second position sensor can sense light, it means that the pin hole is aligned.

The indicator light is used to indicate the operation of the solenoid valve.

Beneficial effects of the present invention:

The invention is applied to wind power generator equipment, can automatically complete the mechanical pin insertion work, can improve work efficiency, and reduce manual labor intensity.

The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of the circuit structure of the device of the present invention.

Fig. 2 is the single-chip microcomputer control circuit of the device of the present invention.

Fig. 3 is the signal acquisition circuit of the device of the present invention.

Fig. 4 is a schematic diagram of the electromagnetic attraction module of the device of the present invention.

In the figure: 1-single-chip microcomputer control module, 2-speed sensor, 3-first position sensor, 4-relay, 5-solenoid valve, 6-indicator light, 7-second position sensor, 8-manual switch module.

detailed description

Referring to Fig. 1, the present invention comprises single-chip microcomputer control module 1, rotational speed sensor 2, first position sensor 3, second position sensor 7, relay 4, manual switch module 8, solenoid valve 5 and indicator light 6, the pin hole on the fan wheel Both sides are respectively provided with a first position sensor 3 and a second position sensor 7, the speed sensor 2 is installed on the fan wheel for monitoring the speed of the fan, the control terminal of the relay 4, the speed sensor 2, the first position sensor 3 and the second The position sensors 7 are all connected with the single-chip control module 1, the relay 4 is connected at both ends of the mains through the solenoid valve 5 and the indicator light 6, the manual switch module 8 is connected in parallel at both ends of the relay 4, and the indicator light 6 is connected in series with the solenoid valve 5.

It also includes a signal acquisition module and an electromagnetic attraction module. The rotational speed sensor 2, the first position sensor 3 and the second position sensor 7 are all connected to the single-chip control module 1 through the same signal acquisition module respectively, and the electromagnetic valve 5 and the relay 4 are connected through the electromagnetic attraction. Combined module and single-chip microcomputer control module 1 are connected.

As shown in Figure 2, the single-chip microcomputer control module includes a single-chip microcomputer U2. The XTAL1 pin and XTAL2 pin of the single-chip microcomputer U2 are connected in series with a crystal oscillator Y1, and the XTAL1 pin and XTAL2 pin are respectively grounded through a capacitor C3 and a capacitor C2. Waveform generator; the RST pin of the single-chip microcomputer U2 is grounded to VCC through the resistor R7 and the capacitor C4 respectively, and the resistor R7 and the capacitor C4 are connected to form a reset signal generator; the P1.0 pin or P1.2 pin of the single-chip microcomputer U2 is used as an output port, It is connected to the relay through the electromagnetic pull-in module; the P1.5, P0.1 or P0.2 pin of the single-chip microcomputer U2 is used as an input, connected to the signal acquisition module and receives the collected voltage value transmitted.

As shown in FIG. 3 , the signal acquisition module includes a sensor psd1 , resistors R1 ˜ R6 , a capacitor C1 and a sliding rheostat R2 . The sensor psd1 is the rotational speed sensor 2 , the first position sensor 3 or the second position sensor 7 . One end of the sensor psd1 is grounded, the other end is connected to the inverting input of the amplifier U1A, the inverting input of the amplifier U1A is grounded through the resistor R4, the positive input of the amplifier U1A is grounded through the resistor R5, and the reverse input of the amplifier U1A is grounded through the resistor R1 Then connect to its own output terminal; the output terminal of the amplifier U1A is connected to the reverse input terminal of the amplifier U1B through the resistor R3, the forward input terminal of the amplifier U1B is grounded through the resistor R6, and the reverse input terminal of the amplifier U1B is connected after the resistor R2 Its own output terminal, the output terminal of the amplifier U1B is grounded through the capacitor C1, and the output terminal of the amplifier U1B is used as the output terminal of the signal acquisition module and connected to the single-chip microcomputer U2 of the single-chip microcomputer control module.

As shown in Figure 4, the electromagnetic pull-in module includes a resistor R8, a relay K1, a transistor Q1, an indicator light DS1 and a solenoid valve. The base of the transistor Q1 is connected to the single-chip microcomputer U2 of the single-chip microcomputer control module, and the collector of the transistor Q1 is passed through the relay K1. The coil is connected to the resistor R8, the emitter of the triode Q1 is grounded, and the pull-in terminal of the relay K1 is connected in series with the solenoid valve and the indicator light between the power supply and the ground.

The solenoid valve 5 is connected to the electromagnetic latch in the latch hole, and is used to control and push the electromagnetic latch to lock the fan, so that the fan stops rotating. The electromagnetic valve is used to reduce the speed of the fan, and the electromagnetic bolt makes the bolt inserted into the air of the wind wheel, so that the wind wheel is locked and stops rotating.

Working process of the present invention:

During the working process, when the equipment needs to be stopped for maintenance, turn on the power, brake the fan manually, and detect the speed of the fan through the speed sensor. The alignment state of the hole, when the pin hole is aligned, the solenoid valve pushes the pin to move and insert it into the pin hole, and the fan is locked to stop rotating.

In specific implementation, the manual switch module can also be used to manually align the pin holes to perform shutdown work.

Two position sensors are installed on the front and rear edges of the wind turbine hole respectively, and two laser emitters are installed on the front and rear sides of the mechanical pin opposite to it. When the surfaces of the two position sensors are irradiated by light, a current signal can be generated, and a voltage value can be obtained through the amplification circuit in the signal acquisition module. When it is greater than the set value, as the time point when the laser is just irradiated on the position sensor, the position and speed are converted into electrical signals and transmitted to the single-chip microcomputer, through Vin1 and Vin2 to the single-chip microcomputer, and the single-chip microcomputer adopts the AT89S51 model.

The electromagnetic pull module can be simplified as an inductive load. The electromagnetic pull is to use the electromagnet to attract the mechanical pin, so that it can be inserted into the hole of the wind wheel to prevent the wind wheel from rotating. The electromagnetic pull-in module is controlled by the output signal Vout1 of the single-chip microcomputer. When Vout1 is high level, the relay works and drives the electromagnet. When working, the indicator light is on, which has the function of prompting the operator.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention, and any solution after a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (4)

1. a kind of wind power plant wind wheel mechanical lock is to aperture apparatus, it is characterised in that：Including single chip control module (1), turn Fast sensor (2), first position sensor (3), second place sensor (7), relay (4), hand switch module (8), electricity Pin hole both sides on magnet valve (5) and indicator lamp (6), impeller of blower are respectively arranged with first position sensor (3) and the second place Sensor (7), speed probe (2) is arranged on impeller of blower, the rotating speed for monitoring blower fan, relay (4) control end, rotating speed Sensor (2), first position sensor (3) and second place sensor (7) are connected with single chip control module (1), relay Device (4) is connected to civil power two ends through magnetic valve (5) and indicator lamp (6), and hand switch module (8) is connected in parallel on the two of relay (4) End.

2. a kind of wind power plant wind wheel mechanical lock as claimed in claim 1 is to aperture apparatus, it is characterised in that：Also include letter Number acquisition module and electromagnetism adhesive module, speed probe (2), first position sensor (3) and second place sensor (7) are Connected through respective identical signal acquisition module and single chip control module (1), magnetic valve (5) and relay (4) are inhaled through electromagnetism Matched moulds block and single chip control module (1) connection；

Single chip control module includes single-chip microcomputer U2, and single-chip microcomputer U2 XTAL1 pin and XTAL2 pin are in series with crystal oscillator Y1, XTAL1 pin It is grounded respectively through electric capacity C3 and electric capacity C2 with XTAL2 pin, the waveform generator of electric capacity C2, electric capacity C3 and crystal oscillator Y1 compositions；Monolithic Ground connection and VCC, resistance R7 are connected and constitute reset signal machine U2 RST pin with electric capacity C4 after resistance R7 and electric capacity C4 respectively Device；Single-chip microcomputer U2 P1.0 pin or P1.2 pin is connected as delivery outlet, and through electromagnetism adhesive module with relay；Single-chip microcomputer U2 P1.5, P0.1 or P0.2 pin are as input connection signal acquisition module and receive the collection voltages value that transmits；

Signal acquisition module includes sensor psd1, resistance R1~R6, electric capacity C1 and slide rheostat R2, sensor psd1 one end Ground connection, another termination amplifier U1A reverse input end, amplifier U1A reverse input end is grounded through resistance R4, amplifier U1A positive input is grounded through resistance R5, and amplifier U1A reverse input end connects after resistance R1 with the output end of itself Connect；Amplifier U1A output end is connected through resistance R3 with amplifier U1B reverse input end, amplifier U1B positive input It is grounded through resistance R6, amplifier U1B reverse input end is followed by the output end of itself, amplifier U1B output end through resistance R2 Be grounded through electric capacity C1, amplifier U1B output end as signal acquisition module output end and be connected to single chip control module Single-chip microcomputer U2 on；

Electromagnetism adhesive module is shown including resistance R8, relay K1, triode Q1, indicator lamp DS1 and magnetic valve, triode Q1 base Pole and the single-chip microcomputer U2 connections of single chip control module, triode Q1 colelctor electrode connect after relay K1 coils with resistance R8 Connect, triode Q1 grounded emitter, relay K1 adhesive end and magnetic valve, indicator lamp are connected between power supply and ground.

3. a kind of wind power plant wind wheel mechanical lock as claimed in claim 1 is to aperture apparatus, it is characterised in that：The electromagnetism Electromagnetic bolt in valve (5) connecting bolt hole, for controlling to promote Electromagnetic bolt to pin blower fan so that blower fan stops operating.

4. a kind of wind power plant wind wheel mechanical lock as claimed in claim 2 is to aperture apparatus, it is characterised in that：Described biography Sensor psd1 is speed probe (2), first position sensor (3) or second place sensor (7).