CN213517299U

CN213517299U - Live voice prompt system for box type distribution box of wind driven generator

Info

Publication number: CN213517299U
Application number: CN202022120590.5U
Authority: CN
Inventors: 陈永刚; 高斌
Original assignee: Huaneng Yangjiang Wind Power Generation Co ltd
Current assignee: Huaneng Yangjiang Wind Power Generation Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-22
Anticipated expiration: 2030-09-24

Abstract

The live voice prompt system of the box type distribution box of the wind driven generator comprises a voltage-stabilized power supply, a storage battery, a spring and an electromagnetic door lock; the power supply also comprises an opening circuit, a leakage detection circuit and a power failure detection circuit; the rear side end of the spring is arranged on the inner front side of the box body of the distribution box, and the electromagnetic door lock is arranged at one end of the inner side of a box door of the box body; the leakage detection circuit comprises a control sub-circuit, a reed switch and a permanent magnet, the reed switch is arranged at one end of the inner side of the box door, a supporting plate is arranged at the front end of one inner side of the box body, and the magnet is arranged in front of the supporting plate; the door opening circuit comprises an infrared switch and an output sub-circuit, and the infrared switch is arranged at the front part of the door; the stabilized voltage power supply, the storage battery, the output sub-circuit of the door opening circuit, the control sub-circuit of the electric leakage detection circuit and the power failure detection circuit are arranged in the element box and are electrically connected with the infrared switch, the electromagnetic door lock and the reed switch. This novel conveniently opens the chamber door through the non-contact mode, when the box takes place the electric leakage or does not close main switch, can prevent that the staff from electrocuteeing.

Description

Live voice prompt system for box type distribution box of wind driven generator

Technical Field

The utility model relates to a wind-powered electricity generation corollary equipment technical field, especially an electrified voice prompt system of box block terminal of aerogenerator.

Background

Wind power generation is increasingly applied due to energy conservation and environmental protection. In order to ensure that the power output by the wind driven generator supplies power to the electric equipment, the wind driven generator can be matched with a distribution box (a power distribution cabinet). Various voltage stabilizing equipment, circuit breakers, contactors, protection equipment, metering equipment and other electrical components are installed in the fan distribution box. In practical application, in daily maintenance and overhaul, a worker is required to open a box door of the distribution box to maintain or overhaul each electric component in the box body.

Because in the operation and maintenance, aerogenerator is in the power generation state, forgets to close the total switch of block terminal when the staff (total switch generally is located block terminal case outside in addition region or block terminal, when being located the block terminal, total switch's operating handle is located block terminal case front outer side), when maintaining the interior electrical component of box, if the staff touches electrified part because of various carelessness, has the probability that leads to the electric shock. In addition, the box body of the distribution box is generally of a metal structure, when electric components in the box body are electrically conductive due to various reasons (such as insulation layer damage) and direct contact of the box body, the box door is opened by workers through direct manual operation, so that the live box door is directly contacted by hands when the box door is opened, and the risk of electric shock is also caused. In the prior art, no equipment for prompting the electrification of the box body before the contact of a worker and the opening of the electrified box door exists, and no equipment for prompting the worker by closing a main power switch in the box body in operation and maintenance exists, so that technical support cannot be provided for the safe application of the distribution box of the wind driven generator, and therefore, certain potential safety hazards exist in the distribution box of the fan.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the live box cannot be prompted before a worker opens a live box door due to structure limitation and cannot prompt the worker when the box does not close a main power switch in operation and maintenance, and technical support cannot be provided for safe application of the distribution box of the wind driven generator, the utility model provides a box which does not need to be manually contacted before the worker opens the box door, the box door can be conveniently opened in a non-contact mode, a leakage detection circuit and a power failure detection circuit can detect whether the box leaks electricity and whether the main power switch is closed after the box door is opened, when the box leaks electricity or the main power switch is not closed, the worker can respectively give sound and light prompts before contacting the box, thereby preventing the probability of electric shock of the worker, and the worker can intuitively know specific conditions according to different prompts, therefore, the safety of workers is effectively guaranteed, and the live voice prompt system of the box type distribution box of the wind driven generator is realized.

The utility model provides a technical scheme that its technical problem adopted is:

the live voice prompt system of the box type distribution box of the wind driven generator comprises a voltage-stabilized power supply, a storage battery, a spring and an electromagnetic door lock; it is characterized in that the device also comprises a door opening circuit, a leakage detection circuit and a power failure detection circuit; the spring is arranged on the front side in the box body of the distribution box, and the electromagnetic door lock is arranged at one end of the inner side of a box door of the box body; the leakage detection circuit comprises a control sub-circuit, a reed switch and a permanent magnet, the reed switch is arranged at one end of the inner side of the box door, a supporting plate is arranged at the front end of one inner side of the box body, and the magnet is arranged in front of the supporting plate; the door opening circuit comprises an infrared switch and an output sub-circuit, the infrared switch is arranged at the front part of the box door, and the front end of a detection head of the infrared switch is positioned outside the front part of the box door; the stabilized voltage power supply, the storage battery, the output sub-circuit of the door opening circuit, the control sub-circuit of the electric leakage detection circuit and the power failure detection circuit are arranged in the element box; the power input ends of the stabilized voltage supply, the two control power input ends of the power failure detection circuit and the two poles of the alternating current power supply in the distribution box are respectively and electrically connected, the two power output ends of the stabilized voltage supply, the two poles of the storage battery, the two power input ends of the door opening circuit and the two power input ends of the leakage detection circuit are respectively and electrically connected, and the two power output ends of the door opening circuit and the two power input ends of the power failure detection circuit are respectively and electrically connected; the signal input end of the electric leakage detection circuit is electrically connected with the metal part of the box door, and the control power output end of the door opening circuit is electrically connected with the power input end and the power output end of the electromagnetic door lock respectively.

Further, the stabilized voltage supply is an alternating current and direct current switching power supply module.

Further, the front end of the spring is positioned more forward than the front part of the box body.

Further, the infrared switch of the door opening circuit is a reflection-type photoelectric switch; the output sub-circuit comprises a double-D trigger integrated circuit with the model number of CD4013, a resistor, a relay and an NPN triode, and the double-D trigger integrated circuit, the resistor, the relay and the NPN triode are electrically connected with the photoelectric switch; the clock input end 3 pins of the double-D trigger integrated circuit are connected with one end of a first resistor, the other end of the first resistor is connected with the 3 pins of the infrared switch, the 1 pin of the infrared switch is connected with the positive electrode of the relay and the input end of a control power supply, the 2 pins of the infrared switch are connected with the negative electrode power supply input end 7 pin of the double-D trigger integrated circuit, the direct reset end 4 pin, the direct position end 6 pin and the NPN triode emitting electrode, the output end 1 pin of the double-D trigger integrated circuit is connected with one end of a second resistor, the other end of the second resistor is connected with the base electrode of the NPN triode, and the NPN collecting electrode of the triode is connected.

Further, the control sub-circuit of electric leakage detection circuitry includes the silicon controlled rectifier, relay and news sounder, resistance, the silicon controlled rectifier, relay and news sounder, electric connection between resistance and the tongue tube, tongue tube one end and the anodal power input of relay are connected, relay control power input and the tongue tube other end are connected, relay negative pole power input and news sounder negative pole power input are connected, relay normally open contact end and silicon controlled rectifier positive pole are connected, the silicon controlled rectifier negative pole is connected with news sounder anodal power input, the silicon controlled rectifier control pole is connected with resistance one end.

Furthermore, the power failure detection circuit comprises a relay, a resistor and a light emitting diode, wherein the relay, the resistor and the light emitting diode are electrically connected, the normally open contact end of the relay is connected with one end of the resistor, and the other end of the resistor is connected with the anode of the light emitting diode.

The utility model has the advantages that: this novel chamber door that does not need manual contact block terminal before opening a door only needs the hand to be close certain distance before the infrared switch detecting head, like this under the circuit effect of opening a door, can make the electromagnetic door lock get its lock core of electric work and move left, and then the chamber door is pushed a part forward under the spring action. After the box door is opened some, the box can be detected respectively to electric leakage detection circuitry and power failure detection circuitry, the box door is electrified, and can detect whether main switch closes, when the box takes place the electric leakage or does not close main switch, staff can give sound and light suggestion respectively before the contact box, the probability that the staff electrocuted has been prevented, and the staff can know the particular case directly perceivedly according to the suggestion of difference (sound represents the electric leakage, emitting diode luminous represents and does not close main switch), and take the pertinence measure and close main switch or overhaul (close aerogenerator output switch and overhaul again, and find out the electric leakage point according to the fault type of judgement and maintain). This novel effectively reaches and has guaranteed staff's safety to and realized wind-powered electricity generation block terminal safe operation. Based on the above, the novel device has a good application prospect.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the structure and a partial enlarged structure of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, the live voice prompt system of the box type distribution box of the wind driven generator comprises a voltage-stabilized power supply 1, a storage battery 2, a spring 3 and an electromagnetic door lock 4; the power supply also comprises an opening circuit, a leakage detection circuit and a power failure detection circuit 5; the rear side end of the spring 3 is welded on the front side of the upper end in the box body 61 of the distribution box (the rear side of the box door 62 contacts the front end of the spring 3), the electromagnetic door lock 4 is transversely arranged at the right end of the middle part of the inner side of the box door 62 of the box body through a screw nut, and a bolt of the electromagnetic door lock 4 is positioned at the right end; the electric leakage detection circuit comprises a control sub-circuit 71, a reed switch 72 and a permanent magnet 73, wherein the reed switch 72 is vertically arranged in a plastic box 74, the plastic box 74 is arranged at the right end of the upper part of the inner side of the box door 62 through a screw nut, a static contact of the reed switch 72 is vertically positioned at the rear side of the rear end of the plastic box 4, a movable contact is positioned at the front side of the rear end, a rectangular supporting plate 63 is welded at the upper part of the front end of the right side of the box body 61, the magnet 73 is adhered to the front end of the supporting plate 63, the magnet 73 and the plastic box 74 are separated by a minimum distance (2mm) after the box door 62 is closed, the magnetic acting force of the magnet 73 acts on the reed switch; the door opening circuit comprises an infrared switch 81 and an output sub-circuit 82, wherein the infrared switch 81 is arranged in the front middle of the door 62, and the front end of a detection head of the infrared switch 81 is positioned outside an opening in the middle of the front end of the door 62; the stabilized voltage power supply 1, the storage battery 2, the output sub-circuit 82 of the door opening circuit, the control sub-circuit 71 of the electric leakage detection circuit and the power failure detection circuit 5 are arranged in the element box 9, and the element box 9 is arranged in the middle of the inner side of the box door 62 through a screw nut and is positioned at the right end of the photoelectric switch 81. The front end of the spring 3 is positioned at a certain distance of 1.5cm before the front part of the box body 61, and the spring 3 can enable the box door 62 to move forwards for a certain distance after the electromagnetic door lock 4 is opened; after the electromagnetic door lock 4 is closed, the bolt of the electromagnetic door lock is positioned at the rear right side of the rectangular baffle 611 vertically distributed at the front end of the right side of the box body 61, and after the bolt of the electromagnetic door lock 4 is electrified and the left side of the rectangular baffle 611 is separated by a distance, the box door 62 is opened.

As shown in fig. 2, the regulated power supply U1 is a finished product of a 220V/12V/200W ac-220V-to-dc 12V switching power supply module, and has an input ac of 220V, an output dc of 12V, and a power of 200W (no-load voltage is actually higher than 12V); battery G is a model 12/5Ah lithium battery. The electromagnetic door lock DC is an electromagnetic door lock finished product with the model KT-XL01, the working voltage is direct current of 12V, the bolt moves leftwards after power is on, the bolt moves rightwards under the action of the matched spring after power is off, and the movement stroke of the bolt is 1.5 cm. The infrared switch of the door opening circuit is a reflection type photoelectric switch finished product U2 of model E3F-DS200C4, and is provided with two power input ends 1 and 2 pins and a high level output end 3 pin, when the infrared switch works, infrared light beams emitted by a transmitting head of a detecting head at the right front end of the infrared switch are blocked by an object, when the infrared switch receives the infrared light beams, the high level output end outputs high level, when the infrared light beams are not blocked by the object, the infrared light beams are not output, the farthest detection distance is 50cm, an adjusting knob is arranged in the left side end of a shell, when the adjusting knob is adjusted leftwards, the detection distance is close, and when the adjusting knob is adjusted rightwards, the detection distance is far (the; the output sub-circuit comprises a double-D trigger integrated circuit U3 with a model number of CD4013, resistors R1 and R2, a relay K1 and an NPN triode Q1, and the output sub-circuit is connected with the photoelectric switch U2 through a wire and circuit board wiring; the clock input end 3 pin of the double-D trigger integrated circuit U3 is connected with one end of a first resistor R1, the other end of the first resistor R1 is connected with the 3 pin of the infrared switch U2, the pin 1 of the infrared switch U2 is connected with the positive electrode of the relay K1 and the control power supply input end, the pin 2 of the infrared switch U2 is connected with the negative electrode power supply input end 7 pin, the direct reset end 4 pin and the direct set end 6 pin of the double-D trigger integrated circuit U3 and the emitter of the NPN triode Q1, the pin 1 of the output end of the double-D trigger integrated circuit U3 is connected with one end of a second resistor R2, the other end of the second resistor R2 is connected with the base of the NPN triode Q1, and the collector of the NPN triode Q1 is connected with the negative electrode.

As shown in fig. 2, the control sub-circuit of the leakage detection circuit includes a thyristor VS1, a relay K2, a buzzer B, and a resistor R4, which are connected with a reed switch GH through a wire and a circuit board, one end of the reed switch GH is connected with a positive power input end of a relay K2, a control power input end of the relay K2 is connected with the other end of the reed switch GH, a negative power input end of the relay K2 is connected with a negative power input end of the buzzer B, a normally open contact end of the relay K2 is connected with an anode of the thyristor VS1, a cathode of the thyristor VS1 is connected with a positive power input end of the buzzer B, and a control electrode of the thyristor VS1 is connected with one end of a resistor R. The power failure detection circuit comprises a relay K3, a resistor R5 and a light emitting diode VL, wherein the relay K3, the resistor R5 and the light emitting diode VL are connected through circuit board wiring, the light emitting surface of the light emitting diode VL (10) is positioned outside a small opening at the front end of the element box and the box door 62, the normally open contact end of the relay K3 is connected with one end of a resistor R5, and the other end of the resistor R5 is connected with the positive electrode of.

As shown in fig. 2, two terminals 1 and 2 of the power input of regulated power supply U1, two control power input relays K3 of the power failure detection circuit control the power input, the cathode of light emitting diode VL, and two poles of the 220V ac power supply (which may be a phase line and a zero line of a three-phase four-wire power supply, and is located at the power output of the main power switch) in the distribution box are connected by wires, respectively. Two power output ends 3 and 4 pins of a regulated power supply U1, two poles of a storage battery G, pins 1 and 2 of a photoelectric switch U2 at two ends of a power input end of a door opening circuit, silicon controlled rectifier VS anodes at two ends of a power input end of a leakage detection circuit and a power input end of a negative electrode of a relay K2 are respectively connected through leads, and a normally open contact end of a relay K1 at two ends of the power output end of the door opening circuit, an emitting electrode of an NPN triode Q1 and a positive electrode and a negative electrode power input end of a relay K3 at two ends of the power input of a; the other end of the signal input end resistor R4 of the leakage detection circuit is connected with the metal part of the box door 62 (the box door and the box body are metal and are electrically communicated) through a lead, and the control power output end relay K1 of the door opening circuit is connected with the normally open contact end of the NPN triode Q1 emitter and the two ends of the coil power input end of the electromagnetic door lock DC through leads.

As shown in fig. 1 and 2, after the 220V ac power supply enters the pins 1 and 2 of the regulated power supply U1, the regulated power supply U1 outputs stable 12V dc power supply under the action of its internal circuit to enter the battery G and the door opening circuit, and the input ends of the power supply of the leakage detection circuit, so that the battery G (after the battery G is powered on, the battery G is charged by floating the 12V power supply output by the

pins

3 and 4 of the regulated power supply U1, and after power failure, the leakage detection circuit, the power failure detection circuit and the door opening circuit can all be powered on), the door opening circuit, and the leakage detection circuit are in a powered on state. This is novel in, need not contact chamber door 62 when the staff need overhaul in to the block terminal, and the staff is located near the detecting head within 40cm before the detecting head of interval photoelectric switch U2, and then, photoelectric switch U2 can export the high level through resistance R1 step-down current-limiting 3 feet that get into two D trigger integrated circuit U3 under its internal circuit effect. After the double-D trigger integrated circuit U3 works with electricity and in an initial state, the bistable circuit in the double-D trigger integrated circuit U3 is in a stable state 1 pin and does not output high level, so that the relay K1 cannot be electrified for attraction, and the electromagnetic door lock DC cannot be electrified for opening. When a worker approaches a detecting head of the photoelectric switch U2 for the first time, after a high level output by a pin 3 of the photoelectric switch U2 is subjected to voltage reduction and current limitation by a resistor R1 and enters a pin 3 of a double-D trigger integrated circuit U3, the bistable circuit can turn over once, then a high level output by a pin 1 of the double-D trigger integrated circuit U3 is subjected to voltage reduction and current limitation by a resistor R2 and enters a base electrode of an NPN triode Q1, the NPN triode Q1 is conducted with a collector to output a low level and enters a negative power supply input end of a relay K1, and the relay K1 is electrified to attract a control power supply input end and a normally open contact end. Because the positive power supply input end of the electromagnetic door lock DC and power failure detection circuit is connected with the normally open contact end of the relay K1, the electromagnetic door lock DC and the power failure detection circuit can work by electricity at the moment. After the electromagnetic door lock DC is powered on, the bolt of the electromagnetic door lock DC can move leftwards, the bolt and the left side of the rectangular baffle 611 are separated by a distance, and then the door 62 can be opened forwards (by about 10 cm) under the elastic acting force of the spring 3.

As shown in fig. 1 and 2, after the power failure detection circuit is powered on to work, the relay K3 can be powered on to close the control power input end and the normally open contact end. When the staff did not close main switch before opening chamber door 62, 220V alternating current power supply one utmost point can be through relay K3 control power input end and normally open contact end, through resistance R5 step-down current-limiting entering emitting diode VL anodal, then emitting diode VL gets to send out light, and the staff just can pass emitting diode VL light emitting state at this moment, and the main switch of understanding directly perceivedly does not close, overhauls again after closing main switch. When the staff closes the main power switch before opening the box door 62, no power enters the light-emitting diode VL through the relay K3, so that the light-emitting diode is in a power-off non-light-emitting state, and at the moment, the staff can visually know that the main power switch closes the box door and can carry out maintenance after being opened through the fact that the light-emitting diode VL does not emit light.

As shown in fig. 1 and 2, in the leakage detection circuit, when a worker opens the box door 62 through the door opening circuit, due to the fact that the box door 62 moves forward, the magnet CT and the reed switch GH are separated from each other, the magnetic acting force of the magnet CT does not act on the reed switch GH any more, the internal contact of the reed switch GH is closed, the 12V power supply positive electrode can enter the positive power supply input end of the relay K2, and then the relay K2 is electrified to attract the control power supply input end and the normally open contact end of the relay to be closed. Since the normally open contact end of the relay K2 is connected with the anode of the thyristor VS1, the anode of the thyristor VS1 is electrified at the moment. Under the actual condition, when the box body and the box door do not leak electricity, then, because the control electrode of the silicon controlled rectifier VS1 has no triggering voltage and can not be conducted, the buzzer B can not sound, at the moment, a worker can directly know that the box body and the box door can be overhauled without electricity leakage, and the worker can open the box door by hand to enter a normal overhauling program. When the box door is just opened and the box body or the box door leaks electricity (the main power switch is not closed, the light emitting diode VL emits light to prompt that the light emitting diode is ignored by workers or the light emitting diode is damaged and does not play a role of prompting), the leakage voltage is reduced through the resistor R4 to limit the current and trigger the control electrode of the silicon controlled rectifier VS1, and then the silicon controlled rectifier VS1 is conducted, and the positive electrode of the buzzer B is electrified to give a loud prompting sound. And after hearing the sound, the staff can stop the maintenance (the maintenance is carried out after the output power switch of the wind driven generator is closed, and the electric leakage point is found out according to the judged fault type for maintenance). This novel circuit control electromagnetism lock DC opens when opening the door, and the door is opened a timing hand and is not touched the door, just opens the door with the hand safety only at siren B phonation and emitting diode VL non-luminous, consequently can not lead to the electric shock accident.

As shown in fig. 1 and 2, in the present invention, when the worker finishes the maintenance and needs to close the box door 62, the worker manually pushes and closes the box door 62 backwards (the box door overcomes the elastic force of the spring 3 and contacts with the box body). Another hand of the worker approaches the detecting head again within 40cm away from the detecting head of the photoelectric switch U2, so that the 3 pin of the photoelectric switch U2 outputs a high level again under the action of the internal circuit thereof, the high level is reduced by voltage and limited by current through the resistor R1, the 3 pin of the double D trigger integrated circuit U3 enters the bistable circuit, and the double D trigger integrated circuit U3 turns over once again, so that the 1 pin of the double D trigger integrated circuit U3 stops outputting the high level (the sequential circulation is carried out, and the 1 pin of the double D trigger integrated circuit U3 outputs the high level … … again after the next time the worker approaches the photoelectric switch again until the storage battery G stops supplying power); further, the NPN triode Q1 is cut off, the relay K1 is not electrified, the input end of the control power supply and the normally open contact end are closed. Because the positive power supply input end of the electromagnetic door lock DC and power failure detection circuit is connected with the normally open contact end of the relay K1, the electromagnetic door lock DC and the power failure detection circuit can lose power and can not work any more at the moment. After the electromagnetic door lock DC power-off box door 62 is closed, the bolt of the electromagnetic door lock DC power-off box door moves rightwards under the spring action of the electromagnetic door lock DC to be positioned at the rear side of the rectangular baffle 611 vertically distributed at the front end of the right side of the box body 61, and due to the blocking effect of the bolt, the box door can not be opened any more when being closed. After the box door 62 is closed, because reed switch GH loses the electricity, relay K2 also loses the electricity, and then silicon controlled rectifier VS1 positive pole also loses the electricity, and all circuits return to initial condition, make preparation for whether the staff next time gets off the box door and detects the electric leakage.

Fig. 1, 2 show, through all circuit and mechanism combined action above-mentioned, this novel chamber door 62 that does not need manual contact block terminal before opening a door only needs the hand to be close infrared switch U2 detecting head certain distance in front, like this under the circuit effect of opening a door, can make electromagnetic door lock DC get its lock core of electric work and move left, and then chamber door 62 is pushed a part open under the effect of spring 3. The box door 62 opens some back electric leakage detection circuitry and has a power failure detection circuitry and can detect box 61 respectively, whether the box door 62 is electrified, and can detect whether total switch is closed, when box 61 and box door 62 take place the electric leakage or do not close total switch, can give sound and light suggestion respectively before the staff contacts the box, the probability that the staff electrocuted has been prevented, and the staff can directly perceivedly know the particular case (sound represents the electric leakage, emitting diode luminous represents and does not close total switch), and take the pertinence measure and close total switch or overhaul (close aerogenerator output switch and overhaul again, and find out the electric leakage point according to the fault type of judgement and maintain). This novel effectively reach and guaranteed staff's safety purpose to and realized wind-powered electricity generation block terminal safe operation. In fig. 2, the NPN transistor Q1 model is 9013; relays K1, K2, K3 are DC4100 type 12V direct current relays; the resistances of the resistors R1, R2, R4 and R5 are 4.7K, 2.2K, 200K and 1.8K respectively; the model of the controlled silicon VS1 is MCR 100-1; the light emitting diode VL is a red light emitting diode; the audible alarm B is an active continuous audible alarm finished product with the model BJ-1; and the reed switch GH is a normally closed contact glass shell reed switch.

The essential features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The live voice prompt system of the box type distribution box of the wind driven generator comprises a voltage-stabilized power supply, a storage battery, a spring and an electromagnetic door lock; it is characterized in that the device also comprises a door opening circuit, a leakage detection circuit and a power failure detection circuit; the spring is arranged on the front side in the box body of the distribution box, and the electromagnetic door lock is arranged at one end of the inner side of a box door of the box body; the leakage detection circuit comprises a control sub-circuit, a reed switch and a permanent magnet, the reed switch is arranged at one end of the inner side of the box door, a supporting plate is arranged at the front end of one inner side of the box body, and the magnet is arranged in front of the supporting plate; the door opening circuit comprises an infrared switch and an output sub-circuit, the infrared switch is arranged at the front part of the box door, and the front end of a detection head of the infrared switch is positioned outside the front part of the box door; the stabilized voltage power supply, the storage battery, the output sub-circuit of the door opening circuit, the control sub-circuit of the electric leakage detection circuit and the power failure detection circuit are arranged in the element box; the power input ends of the stabilized voltage supply, the two control power input ends of the power failure detection circuit and the two poles of the alternating current power supply in the distribution box are respectively and electrically connected, the two power output ends of the stabilized voltage supply, the two poles of the storage battery, the two power input ends of the door opening circuit and the two power input ends of the leakage detection circuit are respectively and electrically connected, and the two power output ends of the door opening circuit and the two power input ends of the power failure detection circuit are respectively and electrically connected; the signal input end of the electric leakage detection circuit is electrically connected with the metal part of the box door, and the control power output end of the door opening circuit is electrically connected with the power input end and the power output end of the electromagnetic door lock respectively.

2. The live voice prompt system of the box type distribution box of the wind driven generator as claimed in claim 1, wherein the voltage-stabilized power supply is an AC/DC switching power supply module.

3. The live voice prompt system for the box type distribution box of the wind driven generator as claimed in claim 1, wherein the front end of the spring is located forward of the front portion of the box body.

4. The live voice prompt system for the box type distribution box of the wind driven generator as claimed in claim 1, wherein the infrared switch of the door opening circuit is a reflective photoelectric switch; the output sub-circuit comprises a double-D trigger integrated circuit with the model number of CD4013, a resistor, a relay and an NPN triode, and the double-D trigger integrated circuit, the resistor, the relay and the NPN triode are electrically connected with the photoelectric switch; the clock input end 3 pins of the double-D trigger integrated circuit are connected with one end of a first resistor, the other end of the first resistor is connected with the 3 pins of the infrared switch, the 1 pin of the infrared switch is connected with the positive electrode of the relay and the input end of a control power supply, the 2 pins of the infrared switch are connected with the negative electrode power supply input end 7 pin of the double-D trigger integrated circuit, the direct reset end 4 pin, the direct position end 6 pin and the NPN triode emitting electrode, the output end 1 pin of the double-D trigger integrated circuit is connected with one end of a second resistor, the other end of the second resistor is connected with the base electrode of the NPN triode, and the NPN collecting electrode of the triode is connected.

5. The electrified voice prompt system of the box-type distribution box of the wind driven generator as claimed in claim 1, wherein the control sub-circuit of the electric leakage detection circuit comprises a silicon controlled rectifier, a relay, a sounder and a resistor, wherein the silicon controlled rectifier, the relay, the sounder and the resistor are electrically connected with a reed pipe, one end of the reed pipe is connected with a positive power input end of the relay, the control power input end of the relay is connected with the other end of the reed pipe, a negative power input end of the relay is connected with a negative power input end of the sounder, a normally open contact end of the relay is connected with an anode of the silicon controlled rectifier, a cathode of the silicon controlled rectifier is connected with the positive power input end of the sounder.

6. The live voice prompt system of the box type distribution box of the wind driven generator as claimed in claim 1, wherein the power failure detection circuit comprises a relay, a resistor and a light emitting diode, the relay, the resistor and the light emitting diode are electrically connected, a normally open contact end of the relay is connected with one end of the resistor, and the other end of the resistor is connected with an anode of the light emitting diode.