A wind turbine nacelle opening and closing reminding device

Abstract

The utility model relates to wind turbine generator operation and maintenance equipment technical field discloses a kind of wind turbine generator skylight opening and closing reminding device, one end of limit switch is connected with the positive pole of power supply, the other end of limit switch is respectively connected with the one end of normally open switch of first time relay and the one end of normally closed switch of second time relay, the other end of normally open switch of first time relay is respectively connected with the one end of buzzer and the one end of coil of second time relay, the other end of normally closed switch of second time relay is connected with the one end of coil of first time relay, the other end of coil of first time relay, the other end of coil of second time relay and the other end of buzzer are all connected with the negative pole of power supply.Limit switch is set to induct the opening and closing state of skylight, remind using warning light, and the working time and interval of buzzer are controlled by time relay, can effectively remind wind turbine generator work shift member to close skylight before going down tower.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine operation and maintenance auxiliary equipment, specifically to a wind turbine sunroof opening and closing reminder device. Background Technology

[0002] When wind turbines are operating on the tower, it is often necessary to open the nacelle skylight. After work is completed, the skylight needs to be closed to prevent rain, snow, and birds from entering the nacelle if the skylight remains open for an extended period after maintenance personnel leave. However, in actual operation and maintenance, maintenance personnel often forget to close the skylight due to negligence. Therefore, a skylight opening and closing reminder device needs to be designed to remind work crew members to close the skylight before leaving the tower. Utility Model Content

[0003] In view of this, the present invention provides a wind turbine sunroof opening and closing reminder device to solve the problem in the prior art that maintenance personnel often forget to close the wind turbine sunroof.

[0004] This utility model provides a wind turbine sunroof opening and closing reminder device, the device comprising: a limit switch, a buzzer, a first time relay, and a second time relay, wherein... One end of the limit switch is connected to the positive terminal of the power supply. The other end of the limit switch is connected to one end of the normally open switch of the first time relay and one end of the normally closed switch of the second time relay. The other end of the normally open switch of the first time relay is connected to one end of the buzzer and one end of the coil of the second time relay. The other end of the normally closed switch of the second time relay is connected to one end of the coil of the first time relay. The other ends of the coils of the first time relay, the second time relay, and the buzzer are all connected to the negative terminal of the power supply. The limit switch is installed at the skylight position. When the skylight is closed, the limit switch is open; when the skylight is open, the limit switch is closed.

[0005] This utility model provides a wind turbine skylight opening and closing reminder device. By setting a limit switch to sense the opening and closing status of the skylight, using an alarm light to provide a reminder, and controlling the working time and interval of the buzzer through a time relay, it can effectively remind wind turbine crew members to close the skylight before descending the tower. This prevents rain and snow from falling into the nacelle or birds from flying in due to the skylight being open for a long time, thus protecting the equipment and ensuring the normal operation of the unit.

[0006] In one alternative implementation, the timing interval of the first time relay is set to 10 minutes.

[0007] In one alternative implementation, the timing interval of the second time relay is set to 10 seconds.

[0008] In one optional embodiment, the device further includes an alarm light, one end of which is connected to the other end of the limit switch, one end of the normally open switch of the first time relay, and one end of the normally closed switch of the second time relay, and the other end of which is connected to the negative terminal of the power supply.

[0009] In one alternative implementation, the warning light is mounted on the engine compartment cabinet.

[0010] In one optional embodiment, the device further includes: an air switch, one end of which is connected to the positive terminal of the power supply, and the other end of which is connected to one end of the limit switch.

[0011] In one alternative implementation, the power supply voltage is DC24V.

[0012] In one optional implementation, the limit switch is a mechanical limit switch. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of a wind turbine sunroof opening and closing reminder device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of another wind turbine sunroof opening and closing reminder device according to an embodiment of the present utility model. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] like Figure 1 As shown, this utility model provides a wind turbine sunroof opening and closing reminder device, including: a limit switch QS, a buzzer DL, a first time relay KT1, and a second time relay KT2. One end of the limit switch QS is connected to the positive terminal of the power supply. The other end of the limit switch QS is connected to one end of the normally open switch of the first time relay KT1 and one end of the normally closed switch of the second time relay KT2. The other end of the normally open switch of the first time relay KT1 is connected to one end of the buzzer DL and one end of the coil of the second time relay KT2. The other end of the normally closed switch of the second time relay KT2 is connected to one end of the coil of the first time relay KT1. The other ends of the coils of the first time relay KT1, the second time relay KT2, and the buzzer DL are all connected to the negative terminal of the power supply. The limit switch QS is installed at the sunroof opening position. When the sunroof is closed, the limit switch QS is open; when the sunroof is open, the limit switch QS is closed.

[0020] Specifically, a limit switch QS is installed at the sunroof location. When the sunroof is closed, the sunroof cover triggers the limit switch QS, causing it to open. When the sunroof is opened, the limit switch returns to normal and closes. The power supply unit uses a DC 24V power supply. After the DC 24V power supply is led out, it passes through the limit switch QS and is then connected in parallel to two circuits. The first circuit connects to the delayed normally open contact of the first time relay KT1, the buzzer DL, and the coil of the second time relay KT2. The second circuit connects to the delayed normally closed contact of the second time relay KT2 and the coil of the first time relay KT1. The switching between the first and second circuits controls the cyclic start and stop of the buzzer DL. The limit switch QS is a mechanical limit switch.

[0021] For example, when the sunroof is open, the limit switch QS closes, energizing the second branch circuit. The first time relay KT1 starts timing. After the timing expires, the normally open switch of the first time relay KT1 closes, energizing the buzzer DL and causing it to sound. The coil of the second time relay KT2 also starts timing. After the timing expires, the normally closed switch of the second time relay KT2 opens, de-energizing the first time relay KT1. The first branch circuit is then de-energized again, and the buzzer DL stops sounding. After the first branch circuit is de-energized, the normally closed switch of the second time relay KT2 closes again, energizing the first time relay KT1 and causing it to start timing again. This cycle of starting and stopping the buzzer DL continues until the sunroof is closed.

[0022] This utility model provides a wind turbine skylight opening and closing reminder device. By setting a limit switch to sense the opening and closing status of the skylight, using an alarm light to provide a reminder, and controlling the working time and interval of the buzzer through a time relay, it can effectively remind wind turbine crew members to close the skylight before descending the tower. This prevents rain and snow from falling into the nacelle or birds from flying in due to the skylight being open for a long time, thus protecting the equipment and ensuring the normal operation of the unit.

[0023] In one optional implementation, the timing interval of the first time relay KT1 is set to 10 minutes. The timing interval of the second time relay KT2 is set to 10 seconds.

[0024] Specifically, the buzzer DL is controlled by a first time relay KT1 and a second time relay KT2. When the skylight opens and the limit switch closes, the second branch is energized, and the first time relay KT1 starts timing, set to 10 minutes. After 10 minutes, the normally open switch of the first time relay KT1 closes, energizing the buzzer DL and causing it to sound. The coil of the second time relay KT2 is also energized and begins timing for 10 seconds. After 10 seconds, the normally closed switch of the second time relay KT2 opens, de-energizing the first time relay KT1 and stopping the buzzer DL. After de-energization, the normally closed switch of the second time relay KT2 closes again, re-energizing the first time relay KT1 and resuming timing for 10 minutes. This ensures that the buzzer DL sounds every 10 minutes after the skylight opens, with each sound lasting 10 seconds.

[0025] In one alternative implementation, such as Figure 2 As shown, the device also includes: an alarm lamp L, one end of which is connected to the other end of the limit switch QS, one end of the normally open switch of the first time relay KT1, and one end of the normally closed switch of the second time relay KT2, and the other end of the alarm lamp L is connected to the negative terminal of the power supply.

[0026] Specifically, when maintenance personnel open the skylight, the skylight limit switch QS is released, the control circuit contacts close, the circuit is connected, and the timer buzzer DL and alarm light L are energized. The timer buzzer DL will sound every 10 minutes to remind maintenance personnel to close the skylight cover in time. The alarm light L is located on the engine room cabinet. After maintenance, maintenance personnel will check the alarm light L for any abnormalities to determine if it is safe to descend the tower. This alarm light L serves as a further reminder to maintenance personnel to confirm the skylight is closed before descending the tower. When the skylight is closed, the limit switch QS is triggered, and the closed circuit is reopened. The timer buzzer DL and alarm light L are de-energized, and there will be no more alerts.

[0027] In one alternative implementation, such as Figure 2 As shown, the device also includes: an air switch QF, one end of which is connected to the positive terminal of the power supply, and the other end of which is connected to one end of a limit switch QS.

[0028] Specifically, when the device circuit experiences abnormal conditions such as overload, short circuit, or overcurrent, the air switch QF can quickly and automatically disconnect the power supply and cut off the circuit to prevent the circuit from overheating, component damage, or even safety accidents caused by excessive current, thereby ensuring the safe and stable operation of the entire reminder device and power supply circuit.

[0029] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A wind turbine nacelle hatch opening and closing reminding device, characterized in that, The device includes: a limit switch, a buzzer, a first time relay, and a second time relay, wherein... One end of the limit switch is connected to the positive terminal of the power supply. The other end of the limit switch is connected to one end of the normally open switch of the first time relay and one end of the normally closed switch of the second time relay. The other end of the normally open switch of the first time relay is connected to one end of the buzzer and one end of the coil of the second time relay. The other end of the normally closed switch of the second time relay is connected to one end of the coil of the first time relay. The other ends of the coils of the first time relay, the second time relay, and the buzzer are all connected to the negative terminal of the power supply. The limit switch is installed at the skylight position. When the skylight is closed, the limit switch is open; when the skylight is open, the limit switch is closed.

2. The wind turbine nacelle hatch opening and closing reminder device according to claim 1, characterized in that, The timing interval of the first time relay is set to 10 minutes.

3. The wind turbine nacelle hatch opening and closing reminder device of claim 1, wherein, The timing interval of the second time relay is set to 10 seconds.

4. The wind turbine nacelle hatch opening and closing reminder device of claim 1, wherein, The device further includes an alarm light, one end of which is connected to the other end of the limit switch, one end of the normally open switch of the first time relay, and one end of the normally closed switch of the second time relay, and the other end of which is connected to the negative terminal of the power supply.

5. The wind turbine nacelle hatch opening and closing reminder device of claim 4, wherein, The warning lights are mounted on the engine compartment cabinet.

6. The wind turbine nacelle hatch opening and closing reminder device of claim 1, wherein, The device further includes: an air switch, one end of which is connected to the positive terminal of the power supply, and the other end of which is connected to one end of the limit switch.

7. The wind turbine nacelle hatch opening and closing reminder device of claim 1, wherein, The power supply voltage is DC24V.

8. The wind turbine nacelle hatch opening and closing reminder device of claim 1, wherein, The limit switch is a mechanical limit switch.

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