CN216676776U - Feedback device of automatic fire extinguishing equipment of wind generating set - Google Patents
Feedback device of automatic fire extinguishing equipment of wind generating set Download PDFInfo
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- CN216676776U CN216676776U CN202123412163.5U CN202123412163U CN216676776U CN 216676776 U CN216676776 U CN 216676776U CN 202123412163 U CN202123412163 U CN 202123412163U CN 216676776 U CN216676776 U CN 216676776U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model relates to a aerogenerator technical field especially relates to a wind generating set automatic fire extinguishing equipment feedback device, includes: the automatic fire extinguisher comprises an automatic fire extinguisher, a safety relay, a first control loop of the safety relay, a first execution loop of the safety relay and a reset loop of the safety relay. The application provides a feedback device of wind generating set automatic fire extinguishing equipment can accurately monitor wind generating set's off-line automatic fire extinguishing equipment's action state to the operation is started once more to prevention and control wind generating set takes place after the fire incident.
Description
Technical Field
The application relates to the technical field of wind driven generators, in particular to a feedback device of automatic fire extinguishing equipment of a wind driven generator set.
Background
A wind turbine generator system is a power generation device that converts wind energy into electric energy, and generally, a nacelle of the wind turbine generator system is provided with a lot of mechanical and electrical equipment. Due to abnormal mechanical wear or continuous electrical overload and the like, fire accidents of the wind generating set are easily caused.
The wind generating set is limited by early technical conditions, and most wind generating set cabins are provided with off-line automatic fire extinguishing equipment (no feedback information is generated after action), so that the wind generating set does not have the functions of fire alarm and shutdown, so that monitoring personnel far away from a booster station cannot find out fire accidents in the wind generating set cabins easily, and the wind power plant cannot take emergency measures in time.
Therefore, how to accurately monitor the action state of the off-line automatic fire extinguishing equipment of the wind generating set so as to prevent and control the wind generating set from starting again after a fire accident happens is a technical problem which needs to be solved by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
The application provides a feedback device of wind generating set automatic fire extinguishing equipment to the action state of accurate off-line automatic fire extinguishing equipment to wind generating set is kept watch on, thereby the operation of starting again after the prevention and control wind generating set takes place the fire accident.
In order to solve the technical problem, the application provides the following technical scheme:
a feedback device of automatic fire extinguishing equipment of a wind generating set comprises: the safety relay control system comprises an automatic fire extinguisher, a safety relay, a first safety relay control loop, a first safety relay execution loop and a safety relay reset loop; the automatic fire extinguisher is arranged in a cabin of the wind generating set and is provided with a normally closed temperature control switch; one end of a first control loop of the safety relay is connected to a first control end of the safety relay, the other end of the first control loop of the safety relay is connected to a second control end of the safety relay, and at least one normally-closed temperature control switch is connected to the first control loop of the safety relay in series; one end of the safety relay reset loop is connected to a first reset end of the safety relay, the other end of the safety relay reset loop is connected to a second reset end of the safety relay, and a first reset switch is connected in the safety relay reset loop; the first execution loop of the safety relay comprises a signal source and a unit controller, the signal source is connected to a first execution end of the safety relay, and the unit controller is connected to a second execution end of the safety relay.
The feedback device of the automatic fire extinguishing equipment of the wind generating set is characterized in that the feedback device is a dry powder fire extinguisher, and the normally closed temperature control switch is arranged on a fire leading cable of the dry powder fire extinguisher; the automatic fire extinguisher is an aerosol fire extinguisher, and the normally closed temperature control switch is arranged on the surface of a tank body of the aerosol fire extinguisher.
The feedback device of the automatic fire extinguishing apparatus of the wind generating set as described above preferably further comprises: and one end of the safety relay second control loop is connected to a third control end of the safety relay, and the other end of the safety relay second control loop is connected to a fourth control end of the safety relay.
The feedback device of the automatic fire extinguishing equipment of the wind generating set is characterized in that the second control loop of the safety relay is a conducting wire so as to short-circuit the third control end and the fourth control end of the safety relay.
The feedback device of the wind generating set automatic fire extinguishing equipment as described above, wherein, preferably, each automatic fire extinguisher is provided with two normally closed temperature controlled switches, wherein one normally closed temperature controlled switch is connected in series to the first control loop of the safety relay, and the other normally closed temperature controlled switch is connected in series to the second control loop of the safety relay.
The feedback device of the automatic fire extinguishing equipment of the wind generating set is characterized in that the safety relay is connected with a first reset switch, and the first reset switch is connected with a second reset switch in parallel.
The feedback device of the automatic fire extinguishing equipment of the wind generating set is characterized in that the feedback device comprises a first reset switch, a second reset switch and a power-on delay relay, wherein the first reset switch is a manual reset switch, the second reset switch is linked with the power-on delay relay, and the power-on delay relay is connected with a mains supply.
The feedback device of the automatic fire extinguishing equipment of the wind generating set as described above preferably further comprises: and the safety chain relay of the second safety relay execution loop is connected to the fourth execution end of the safety relay.
The feedback device of the automatic fire extinguishing equipment of the wind generating set as described above, wherein preferably, the positive terminal and the negative terminal of the safety relay are connected to the power supply.
The feedback device of the automatic fire extinguishing equipment of the wind generating set is characterized in that preferably, in the safety relay, the positive terminal is connected with one end of the resistor, the other end of the resistor is connected to the positive electrode of the diode, the negative electrode of the diode is connected with the second starting unit, the second starting unit is connected to the third control terminal, and the fourth control terminal is connected to the negative terminal; the cathode of the diode is connected with the first starting unit, and the first starting unit is connected to the cathode end; the first control end and the second control end are both connected to the first starting unit, the cathode of the diode is connected to the first control end, the second control end is connected to the first reset end, and the second reset end is connected to the second starting unit; the first starting unit is linked with the first safety switch, the second starting unit is linked with the second safety switch, the first safety switch and the second safety switch are connected between the first execution end and the second execution end after being connected in series, and the first safety switch and the second safety switch are also connected between the third execution end and the fourth execution end after being connected in series.
Compared with the prior art, the feedback device of the automatic fire extinguishing equipment of the wind generating set can accurately monitor the action state of the off-line automatic fire extinguishing equipment of the wind generating set, so that the wind generating set is prevented and controlled from starting again after a fire accident happens.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic view of a feedback device of an automatic fire extinguishing apparatus of a wind generating set provided by an embodiment of the application;
FIG. 2 is a first schematic view of the connection between the automatic fire extinguisher and the normally closed temperature control switch according to the embodiment of the present application;
fig. 3 is a second schematic view illustrating connection between the automatic fire extinguisher and the normally closed temperature control switch according to the embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the utility model.
As shown in fig. 1 to 3, the present application provides a feedback device of an automatic fire extinguishing apparatus of a wind generating set, comprising: an automatic fire extinguisher 110, a safety relay control circuit 120, a safety relay 130, a safety relay reset circuit 140, and a safety relay execution circuit 150.
The automatic fire extinguisher 110 is installed in the cabin of the wind turbine generator system, and is used for extinguishing a fire disaster occurring in the cabin of the wind turbine generator system. Based on the volume of the wind generating set cabin, a plurality of automatic fire extinguishers 110 are usually arranged in the wind generating set cabin, and the plurality of automatic fire extinguishers 110 are distributed at different positions of the wind generating set cabin so as to extinguish fire in time at different fire-starting positions in the wind generating set cabin. Specifically, the fire extinguisher 110 in the present application may be a dry chemical extinguisher (as shown in fig. 2) and/or an aerosol extinguisher (as shown in fig. 3), wherein the dry chemical extinguisher may be disposed on the top of the wind turbine generator system cabin, and the aerosol extinguisher may be disposed in a control cabinet inside the wind turbine generator system cabin.
As shown in fig. 2 and 3, the exterior of the automatic fire extinguisher 110 is provided with a pilot cord 111 and a mechanical temperature-sensitive magnetic power generation starting device 112, and the pilot cord 111 and the mechanical temperature-sensitive magnetic power generation starting device 112 are connected to an ignition chemical 113 located inside the automatic fire extinguisher 110 and can both ignite the ignition chemical 113 to start the automatic fire extinguisher 110. Specifically, in the case where the cord 111 contacts an open fire, the open fire may ignite the cord 111, and the combustion heat of the cord 111 ignites the ignition agent 113, thereby activating the automatic fire extinguisher 110; when the mechanical temperature-sensing magnetic power generation starting device 112 detects that the environmental temperature exceeds a set temperature (for example, 93 ℃), the mechanical temperature-sensing magnetic power generation starting device 112 outputs a short-time electric pulse signal to ignite the ignition chemical 113 through the electromagnetic induction principle, so as to start the automatic fire extinguisher 110.
In the form that the mechanical temperature-sensing magnetic power generation device 112 activates the automatic fire extinguisher 110, the ignition chemical 113 inside the automatic fire extinguishing apparatus 110 is ignited and the pilot cord 111 is still ignited, but in the form that the pilot cord 111 is activated, the ignition chemical 113 inside the automatic fire extinguishing apparatus 110 is ignited and the mechanical temperature-sensing magnetic power generation activation device 112 is not activated.
The fire automatic extinguisher 110 is provided with a normally closed temperature control switch 121 for detecting a temperature change of the fire automatic extinguisher 110, thereby monitoring an operation condition of the fire automatic extinguisher 110. The normally closed temperature control switch 121 in the present application may be a KSD9700 temperature control switch (normally closed, 65 ℃), and may also be a normally closed temperature control switch of another type.
As shown in fig. 2, according to the characteristic that the tank body of the dry powder fire extinguisher has no obvious temperature change after the dry powder fire extinguisher operates, the normally closed temperature control switch 121 is arranged on the pilot cable 111 of the dry powder fire extinguisher, and the operation condition of the dry powder fire extinguisher is monitored by detecting the temperature change of the pilot cable 111. Preferably, in order to detect the operation of the dry chemical extinguisher earlier, the normally closed temperature control switch 121 is disposed at the root of the fuse 111.
As shown in fig. 3, according to the characteristic that the temperature of the can is significantly increased after the aerosol fire extinguisher is operated, the normally closed temperature control switch 121 is disposed on the surface of the can of the aerosol fire extinguisher, and the operation condition of the aerosol fire extinguisher is obtained by detecting the temperature change of the can. Preferably, the normally closed temperature control switch 121 is fixed to the surface of the tank of the aerosol fire extinguisher, specifically, the normally closed temperature control switch 121 is adhered to the surface of the tank of the aerosol fire extinguisher by using a heat-conducting silicone grease, and of course, the normally closed temperature control switch 121 may be fixed by using an adhesive tape for stability.
One end of the safety relay control circuit 120 is connected to the control terminal S11 of the safety relay 130, the other end of the safety relay control circuit 120 is connected to the control terminal S12 of the safety relay 130, and at least one normally-closed type temperature control switch 121 is connected in series into the safety relay control circuit 120 to control the opening of the safety relay 130 by the opening of the at least one normally-closed type temperature control switch 121 in the safety relay control circuit 120. For example: four automatic fire extinguishers 110 are arranged in the cabin of the wind generating set, and each automatic fire extinguisher 110 is provided with a normally-closed temperature control switch 121, for example: a normally closed type temperature controlled switch S3, a normally closed type temperature controlled switch S4, a normally closed type temperature controlled switch S5 and a normally closed type temperature controlled switch S6 are provided, the normally closed type temperature controlled switch S3, the normally closed type temperature controlled switch S4, the normally closed type temperature controlled switch S5 and the normally closed type temperature controlled switch S6 are connected in series in this order, then one end of the normally closed type temperature controlled switch S3 is connected to a control end S11 of the safety relay 130, and the other end of the normally closed type temperature controlled switch S6 is connected to a control end S12 of the safety relay 130.
As an example, when all the normally closed thermo-switches 121 are connected in series to the safety relay control circuit 120, the safety relay control circuit 160 is a wire to short-circuit the control terminal S21 and the control terminal S22 of the safety relay 130, thereby ensuring that the safety relay 130 can operate normally, and the opening of the safety relay 130 is controlled only by the opening of the normally closed thermo-switches 121 connected in series to the safety relay control circuit 120. Of course, at least one normally-closed temperature controlled switch 121 may be connected in series in the safety relay control circuit 160, so as to control the opening of the safety relay 130 by the opening of the at least one normally-closed temperature controlled switch 121 in the safety relay control circuit 160.
In order to improve the accuracy of the normally-closed type temperature control switch 121 and the reliability of the execution of the safety relay 130, two normally-closed type temperature control switches 121 may be provided on each fire extinguisher 110, thereby providing redundant control for the opening of the safety relay 130. One normally closed type temperature control switch 121 of each fire extinguisher 110 is connected in series to the safety relay control circuit 120, and the other normally closed type temperature control switch 121 of each fire extinguisher 110 is connected in series to the safety relay control circuit 160, thereby providing redundant control for the opening of the safety relay 130.
One end of the safety relay reset circuit 140 is connected to the reset terminal S33 of the safety relay 130, the other end of the safety relay reset circuit 140 is connected to the reset terminal S34 of the safety relay 130, and a reset switch S1 is connected in the safety relay reset circuit 140 to perform a reset operation for the opening of the safety relay 130 by the closing of the reset switch S1 in the safety relay reset circuit 140. Preferably, a reset switch S2 is further connected to the safety relay reset circuit 140, and the reset switch S2 is connected in parallel with the reset switch S1, so that the opening of the safety relay 130 is reset by closing the reset switch S1 and/or the reset switch S2 in the safety relay reset circuit 140.
Reset switch S2 still links with circular telegram delay relay K4, and circular telegram delay relay K4 inserts the commercial power to utilize circular telegram delay relay K4 to control reset switch S2' S closure, and then realize the automatic re-setting to safety relay 130, for example: the current collecting circuit is electrified again, so that manual tower climbing and platform-by-platform resetting are avoided. On this basis, the reset switch S1 is preferably a manual reset switch to realize manual reset.
The safety relay execution circuit 150 comprises a signal source (for example, a digital signal 24VDC +) and a unit controller 151, the signal source is connected to the execution terminal S13 of the safety relay 130, the unit controller 151 is connected to the execution terminal S14 of the safety relay 130 to receive a signal from the signal source from the execution terminal S13 to the execution terminal S14 through the safety relay 130, so that the unit controller 151 cannot receive the signal from the signal source by the disconnection of the safety relay 130, and thus it is known that the normally closed thermostat 121 in the safety relay control circuit 120 is disconnected, and thus it is known that a fire disaster occurs in the wind turbine generator. Moreover, after the safety relay 130 is disconnected, the safety relay 130 does not reset automatically without resetting the safety relay resetting circuit 140, so that the action state of the automatic fire extinguisher in the cabin of the wind generating set can be accurately monitored to prevent the machine from being started again after a fire accident happens to the cabin of the wind generating set.
In addition, the signal devices of some equipment (which may be important equipment) in the wind generating set cabin also form a safety chain, and in order to control the operation and the stop of the equipment related to the safety chain according to the occurrence situation of the fire, the feedback device of the automatic fire extinguishing equipment of the wind generating set of the application further comprises: a safety relay execution circuit 170, the safety relay execution circuit 170 including: and a safety chain and safety chain relay K3, wherein the safety chain is connected to the execution terminal S23 of the safety relay 130, the safety chain relay K3 is connected to the execution terminal S24 of the safety relay 130 to receive a signal sent from the execution terminal S23 through the safety chain from the safety relay 130 to the execution terminal S24, so that the safety chain relay K3 cannot receive the signal of the safety chain by the disconnection of the safety relay 130, the wind turbine generator system cabin is known to have a fire, and the operation and the stop of the equipment related to the safety chain are controlled by the disconnection of the safety chain relay K3.
In order to supply power to the safety relay 130, the positive terminal a1 and the negative terminal a2 of the safety relay 130 are connected to a power supply source, thereby ensuring the normal operation of the safety relay 130.
On the basis, in safety relay 130, positive terminal a1 is connected to one end of resistor R1, the other end of resistor R1 is connected to the positive electrode of diode D1, the negative electrode of diode D1 is connected to Start unit Start Uint2 (for example, Start unit Start Uint2 may be an electromagnet), Start unit Start Uint2 is connected to control terminal S22, and control terminal S21 is connected to negative terminal a2, so as to form a loop to supply power to Start unit Start Uint 2. The cathode of diode D1 is connected to Start unit Start Uint1 (for example, Start unit Start Uint1 may be an electromagnet), and Start unit Start Uint1 is connected to cathode a2, so as to form a loop to supply power to Start unit Start Uint 1. The resistor R1 is used for limiting current to protect the Start unit Start Uint1 and the Start unit Start Uint 2; diode D1 is used to prevent the positive terminal a1 and negative terminal a2 of safety relay 130 from being damaged by missupplying power.
Both the control terminal S11 and the control terminal S12 are connected to the Start unit Start Uint1, and the cathode of the diode D1 is connected to the control terminal S11, so that a closing signal of the safety relay control circuit 120 is provided to the Start unit Start Uint1 through the safety relay control circuit 120 outside the safety relay 130 via the control terminal S12. Also, the control terminal S12 is connected to the reset terminal S33, and the reset terminal S34 is connected to the starting unit Start Uint2, so that a reset signal can be provided to the starting unit Start Uint1 and the starting unit Start Uint2 through the safety relay reset circuit 140.
The Start unit Start Uint1 is linked with the safety switch K1, the Start unit Start Uint2 is linked with the safety switch K2, and the safety switch K1 and the safety switch K2 are connected in series and then connected between the execution end S13 and the execution end S14, so that the Start unit Start Uint1 or the Start unit Start Uint2 of the safety relay 130 is controlled by the opening of the normally closed temperature control switch 121 in the safety relay control circuit 120 or the safety relay control circuit 160, the safety switch K1 and the safety switch K2 are opened, the signal reception of the signal source by the unit controller 151 in the safety relay execution circuit 150 is interrupted, and the unit controller 151 can know whether the normally closed temperature control switch 121 is opened, that is, whether the fire extinguisher 110 is put out a fire or not can be known.
In the safety relay 130, the safety switch K1 and the safety switch K2 are connected in series and then connected between the execution end S23 and the execution end S24, so that the Start unit Start Uint1 or the Start unit Start Uint2 of the safety relay 130 is controlled by the opening of the normally closed temperature controlled switch 121 in the safety relay control circuit 120 or the safety relay control circuit 160, so that the safety switch K1 and the safety switch K2 are opened, and the reception of a signal of a safety chain by the safety chain relay K3 in the safety relay execution circuit 170 is interrupted, so that the opening of the safety chain relay K3 is controlled, and further, equipment related to the safety chain is stopped, and the wind turbine generator set cannot normally operate from the aspect of hardware.
In the present application, once a fire occurs in the wind turbine generator system cabin, the fire is extinguished by the automatic fire extinguisher 110, the normally closed temperature control switch 121 in the safety relay control circuit 120 senses the change of temperature to be turned off, so that the safety relay 130 is turned off, and the unit controller 151 in the safety relay execution circuit 150 cannot receive the signal of the signal source, so as to determine that the fire has occurred, and after the fire is extinguished by the automatic fire extinguisher 110, the temperature returns to normal, the normally closed temperature control switch 121 in the safety relay control circuit 120 is re-closed, but the safety relay 130 is still in an off state, at this time, an operator needs to go to the wind turbine generator system cabin to operate the reset switch S1 in the safety relay reset circuit 140 to reset the safety relay 130, so that the operator can check whether the fire occurs in the wind turbine generator system cabin in person, therefore, the action of the automatic fire extinguisher in the engine room of the wind generating set can be accurately monitored.
It will be evident to those skilled in the art that the utility model 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 attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a feedback device of wind generating set automatic fire extinguishing equipment which characterized in that includes: the safety relay control system comprises an automatic fire extinguisher, a safety relay, a first control circuit of the safety relay, a first execution circuit of the safety relay and a reset circuit of the safety relay;
the automatic fire extinguisher is arranged in a cabin of the wind generating set and is provided with a normally closed temperature control switch;
one end of a first control loop of the safety relay is connected to a first control end of the safety relay, the other end of the first control loop of the safety relay is connected to a second control end of the safety relay, and at least one normally-closed temperature control switch is connected to the first control loop of the safety relay in series;
one end of the safety relay reset loop is connected to a first reset end of the safety relay, the other end of the safety relay reset loop is connected to a second reset end of the safety relay, and a first reset switch is connected in the safety relay reset loop;
the first execution loop of the safety relay comprises a signal source and a unit controller, wherein the signal source is connected to the first execution end of the safety relay, and the unit controller is connected to the second execution end of the safety relay.
2. The feedback device of the automatic fire extinguishing equipment of the wind generating set according to claim 1, wherein the automatic fire extinguisher is a dry powder fire extinguisher, and the normally closed temperature control switch is arranged on a pilot cable of the dry powder fire extinguisher; the automatic fire extinguisher is an aerosol fire extinguisher, and the normally closed temperature control switch is arranged on the surface of a tank body of the aerosol fire extinguisher.
3. The feedback device of the automatic fire extinguishing apparatus of the wind generating set according to claim 1 or 2, further comprising: and one end of the safety relay second control loop is connected to a third control end of the safety relay, and the other end of the safety relay second control loop is connected to a fourth control end of the safety relay.
4. The feedback device of the automatic fire extinguishing equipment of the wind generating set according to claim 3, wherein the second control loop of the safety relay is a wire to short-circuit the third control end and the fourth control end of the safety relay.
5. The feedback device of the automatic fire extinguishing apparatus of the wind generating set according to claim 3, wherein two normally closed temperature controlled switches are provided on each automatic fire extinguisher, wherein one of the normally closed temperature controlled switches is connected in series to the first control loop of the safety relay, and the other normally closed temperature controlled switch is connected in series to the second control loop of the safety relay.
6. The feedback device of the automatic fire extinguishing equipment of the wind generating set according to claim 1 or 2, characterized in that a second reset switch is connected in the reset loop of the safety relay, and the second reset switch is connected in parallel with the first reset switch.
7. The feedback device of the automatic fire extinguishing equipment of the wind generating set according to claim 6, wherein the first reset switch is a manual reset switch, the second reset switch is linked with a power-on delay relay, and the power-on delay relay is connected to commercial power.
8. The feedback device of the automatic fire extinguishing apparatus of the wind generating set according to claim 3, further comprising: and the safety chain relay of the second safety relay execution loop is connected to the fourth execution end of the safety relay.
9. The feedback device of the automatic fire extinguishing apparatus of the wind generating set according to claim 8, wherein the positive terminal and the negative terminal of the safety relay are connected to a power supply.
10. The feedback device of the automatic fire extinguishing equipment of the wind generating set according to claim 9, wherein inside the safety relay, a positive terminal is connected with one end of a resistor, the other end of the resistor is connected with a positive electrode of a diode, a negative electrode of the diode is connected with a second starting unit, the second starting unit is connected with a third control terminal, and a fourth control terminal is connected with a negative terminal; the cathode of the diode is connected with the first starting unit, and the first starting unit is connected to the cathode end;
the first control end and the second control end are both connected to the first starting unit, the cathode of the diode is connected to the first control end, the second control end is connected to the first reset end, and the second reset end is connected to the second starting unit;
the first starting unit is linked with the first safety switch, the second starting unit is linked with the second safety switch, the first safety switch and the second safety switch are connected between the first execution end and the second execution end after being connected in series, and the first safety switch and the second safety switch are also connected between the third execution end and the fourth execution end after being connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123412163.5U CN216676776U (en) | 2021-12-30 | 2021-12-30 | Feedback device of automatic fire extinguishing equipment of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123412163.5U CN216676776U (en) | 2021-12-30 | 2021-12-30 | Feedback device of automatic fire extinguishing equipment of wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN216676776U true CN216676776U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123412163.5U Active CN216676776U (en) | 2021-12-30 | 2021-12-30 | Feedback device of automatic fire extinguishing equipment of wind generating set |
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| Country | Link |
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| CN (1) | CN216676776U (en) |
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2021
- 2021-12-30 CN CN202123412163.5U patent/CN216676776U/en active Active
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