Automatic fire fighting device for fan cabin

Abstract

The utility model discloses an automatic fire-fighting device for a fan cabin, which comprises a cabin main body and a fire-fighting device, the fire-fighting device comprises a first aerosol device, a second aerosol device and a third aerosol device, the first aerosol device and the second aerosol device are respectively positioned on two sides of the bottom end of the cabin main body, and the third aerosol device is positioned at the tail part of the bottom end of the cabin main body. Two thermosensitive lines are laid between the first aerosol device and the third aerosol device, and the two thermosensitive lines are respectively connected with the thermosensitive lines additionally arranged on the first aerosol device and the third aerosol device; a thermosensitive line is laid between the third aerosol device and the second aerosol device, and two ends of the thermosensitive line are respectively connected with the thermosensitive lines additionally arranged on the third aerosol device and the second aerosol device, so that the linkage action of the three aerosols is realized. A cabin fire-fighting multi-point monitoring function is realized, all positions of the cabin are fully covered, effective time is provided for fan fire-fighting response, shutdown accidents of the fan caused by misoperation of an automatic fire-fighting device are avoided, and the power generation efficiency of the fan is improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic fire-fighting devices, specifically an automatic fire-fighting device for a wind turbine nacelle. Background Technology

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind energy is a clean and pollution-free renewable energy source that has been utilized by humans for a long time, mainly through windmills for pumping water and grinding grain. People are interested in how to use wind to generate electricity. Wind power generation is very environmentally friendly, and wind energy reserves are enormous, therefore it is receiving increasing attention from countries around the world.

[0003] Existing automatic fire suppression systems for wind turbine nacelles mostly use aerosol extinguishing devices, such as those used in the Shenneng Xiaoji wind turbine nacelle, which have the following shortcomings:

[0004] 1) The equipment and support platforms inside the cabin are complex and intertwined, with poor air circulation. If a fire occurs at a remote location of the temperature sensing device, the response time will be slow.

[0005] 2) The temperature sensing device has a single measuring point, and the coverage area is mainly concentrated around the gearbox. However, there are no measuring points for equipment such as generators and distribution cabinets that have higher temperatures and greater risks.

[0006] 3) There is no interlocking function between each aerosol, and they operate independently. Often, after a fire breaks out in the cabin, all aerosols need to be activated to suppress the fire.

[0007] Therefore, there is an urgent need for an automatic fire-fighting device for wind turbine nacelles to solve the above problems. Utility Model Content

[0008] In view of the shortcomings of the prior art, this utility model discloses an automatic fire-fighting device for wind turbine nacelles to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: an automatic fire-fighting device for a wind turbine nacelle, comprising a nacelle body and a fire-fighting device, wherein the fire-fighting device includes a first aerosol device, a second aerosol device, and a third aerosol device. The first and second aerosol devices are respectively located on both sides of the bottom end of the nacelle body, and the third aerosol device is located at the tail end of the bottom end of the nacelle body. Two thermally sensitive wires are laid between the first and third aerosol devices, and the two thermally sensitive wires are respectively connected to the first and third aerosol devices with thermally sensitive wires installed on them. A thermally sensitive wire is laid between the third and second aerosol devices, and its two ends are respectively connected to the third and second aerosol devices with thermally sensitive wires installed on them, thereby realizing the coordinated action of the three aerosols.

[0010] Preferably, the first aerosol device, the second aerosol device, and the third aerosol device are provided with a mounting bracket at the lower end of their respective mounting points. The mounting bracket is fixed to the lower end of the main body of the cabin. The near-end temperature-sensing magnetic maintenance switch assembly is installed through the mounting bracket, and the near-end temperature-sensing magnetic maintenance switch is connected to the corresponding aerosol.

[0011] Preferably, the near-end temperature-sensing magnetic maintenance switch assembly includes a temperature-sensing magnet and a maintenance switch. Both the temperature-sensing magnet and the maintenance switch are mounted on the mounting bracket, and the temperature-sensing magnet and the maintenance switch are linked together to control the aerosol triggering at the corresponding position.

[0012] Preferably, the mounting brackets at corresponding positions are each provided with warning labels with different numbers to identify different aerosol numbers.

[0013] Preferably, the heat-sensitive wire sheath inserted into the aerosol hole is fixed by sealing with adhesive.

[0014] Preferably, the aluminum tubes at the ends of the thermal wires installed in the first aerosol device and the third aerosol device are provided with T-joint quick connectors; two thermal wires are laid between the first aerosol device and the third aerosol device, and the two thermal wires are connected through the provided double quick connectors, with their ends respectively inserted into the T-joint quick connectors provided on the thermal wires installed in the first aerosol device and the third aerosol device.

[0015] Preferably, the aluminum tube at the end of the thermal wire installed in the second aerosol device is provided with a double-pass quick connector; a thermal wire is laid between the third aerosol device and the second aerosol device, and its two ends are respectively plugged into the three-pass quick connector and the double-pass quick connector provided on the thermal wires installed in the third aerosol device and the second aerosol device.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. In this utility model, a thermal wire is added to the aerosol device, and a near-end temperature sensing magnet + maintenance switch assembly is added to the first to third aerosol devices respectively, so as to realize the multi-point monitoring function of the nacelle fire protection, fully cover all positions of the nacelle, provide effective time for the wind turbine fire protection response, avoid the wind turbine shutdown accident caused by the malfunction of the automatic fire protection device, and improve the wind turbine power generation efficiency.

[0018] 2. In this utility model, the aerosol hole into which the thermal wire sheath is inserted is sealed with nail-free adhesive to fix the thermal wire, and a T-connector is inserted into the aluminum tube at the end of the thermal wire of the first and third aerosol devices.

[0019] 3. In this utility model, two thermal wires are laid between the first and third compartments, and the two thermal wires are connected by a double-connector quick connector. The two ends are respectively plugged into the three-connector quick connectors of the first and third aerosol devices with thermal wires installed. One thermal wire is laid between the third and second compartments, and the two ends are respectively plugged into the three-connector quick connector and the double-connector quick connector of the third and second aerosol devices with thermal wires installed, so as to realize the linkage action of the three aerosols. When any measuring point in the cabin is triggered, the three aerosol devices will be interlocked and spray simultaneously to achieve the function of rapid fire extinguishing. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] In the attached diagram:

[0022] Figure 1 This is a structural schematic diagram of the automatic fire-fighting device of this utility model;

[0023] Figure 2 This is the electrical schematic diagram of the three aerosol activation control devices inside the wind turbine nacelle.

[0024] The following are the labels in the diagram: 1. Cabin nose; 2. Cabin tail; 3. First aerosol device; 4. Second aerosol device; 5. Third aerosol device; 6. First temperature-sensing magnet + maintenance switch group; 7. Second temperature-sensing magnet + maintenance switch group; 8. Third temperature-sensing magnet + maintenance switch group; 9. Thermistor wire. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] Example: Figure 1 and Figure 2As shown, an automatic fire-fighting device for a wind turbine nacelle includes a nacelle body and a fire-fighting device. The fire-fighting device includes a first aerosol device 3, a second aerosol device 4, and a third aerosol device 5. The first aerosol device 3 and the second aerosol device 4 are located on opposite sides of the bottom of the nacelle head 1 of the nacelle body, respectively. The third aerosol device 5 is located at the bottom of the nacelle tail 2 of the nacelle body. Two thermally sensitive wires 9 are laid between the first aerosol device 3 and the third aerosol device 5, respectively. The two thermally sensitive wires are connected to the first aerosol device 3 and the third aerosol device 5. The aluminum tubes at the ends of the thermally sensitive wires 9 of the first aerosol device 3 and the third aerosol device 5 are equipped with T-junction quick connectors. The wire 9 is connected via a double-connector quick connector, and its two ends are respectively inserted into the three-connector quick connectors of the first aerosol device 3 and the third aerosol device 5 with the thermal wire 9 installed. A thermal wire 9 is laid between the third aerosol device 5 and the second aerosol device 4, and its two ends are respectively connected to the thermal wires 9 installed in the third aerosol device 5 and the second aerosol device 4. The aluminum tube at the end of the thermal wire 9 installed in the second aerosol device 4 is equipped with a double-connector quick connector. A thermal wire 9 is laid between the third aerosol device 5 and the second aerosol device 4, and its two ends are respectively inserted into the three-connector quick connector and the double-connector quick connector of the thermal wires 9 installed in the third aerosol device 5 and the second aerosol device 4. This enables the three aerosols to operate in tandem. The thermal wire sheath inserted into the aerosol hole is fixed by sealing with glue.

[0027] A mounting bracket is provided at the lower end of the corresponding installation points of the first aerosol device 3, the second aerosol device 4, and the third aerosol device 5. The mounting bracket is fixed to the lower end of the main body of the cabin. A near-end temperature-sensing magnetic maintenance switch assembly is installed through the mounting bracket. The near-end temperature-sensing magnetic maintenance switch includes a first temperature-sensing magnet + maintenance switch group 6, a second temperature-sensing magnet + maintenance switch group 7, and a third temperature-sensing magnet + maintenance switch group 8. The near-end temperature-sensing magnetic maintenance switch assembly includes a temperature-sensing magnet and a maintenance switch. The temperature-sensing magnet and the maintenance switch are both installed on the mounting bracket. The near-end temperature-sensing magnetic maintenance switch is connected to the corresponding aerosol, and the temperature-sensing magnet and the maintenance switch are linked to each other to control the triggering of the aerosol at the corresponding position. Warning labels with different numbers are provided on the mounting bracket at the corresponding positions to identify different aerosol numbers.

[0028] In terms of specific working principle, the three aerosol start-up control cables of the traditional fan nacelle are all routed to the top of the nacelle. The fan nacelle is 150m high, making it particularly susceptible to lightning strikes during thunderstorms, which can cause induced current in the control cables and lead to malfunction of the automatic fire suppression system. Therefore, the control cables of the automatic fire suppression system are now routed to the bottom of the fan nacelle. During thunderstorms, the induced current is conducted to the ground by the grounding device at the top of the nacelle. First, two thermally sensitive wires 9 are laid between the first aerosol device 3 and the third aerosol device 5. The two thermally sensitive wires 9 are connected with a double-connector quick connector, and the two ends are respectively plugged into the three-connector quick connectors of the first aerosol device 3 and the third aerosol device 5 where the thermally sensitive wires 9 are installed. A thermally sensitive wire 9 is laid between the third aerosol device 5 and the second aerosol device 4, and the two ends are respectively plugged into the three-connector quick connectors and double-connector quick connectors of the third aerosol device 5 and the second aerosol device 4 where the thermally sensitive wires 9 are installed, thus realizing the coordinated action of the three aerosols.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic fire-fighting device for a wind turbine nacelle, characterized in that: The system includes a main cabin and fire-fighting equipment. The fire-fighting equipment includes a first aerosol device, a second aerosol device, and a third aerosol device. The first and second aerosol devices are located on opposite sides of the bottom of the main cabin, and the third aerosol device is located at the tail of the bottom of the main cabin. Two thermally sensitive wires are laid between the first and third aerosol devices, and these two thermally sensitive wires are respectively connected to the thermally sensitive wires installed on the first and third aerosol devices. A thermally sensitive wire is laid between the third and second aerosol devices, and its two ends are respectively connected to the thermally sensitive wires installed on the third and second aerosol devices, thereby realizing the coordinated action of the three aerosols.

2. The automatic fire-fighting device for a wind turbine nacelle according to claim 1, characterized in that: Each of the first aerosol device, the second aerosol device, and the third aerosol device has a mounting bracket at its lower end corresponding to its mounting point. The mounting bracket is fixed to the lower end of the main body of the cabin. A near-end temperature-sensing magnetic maintenance switch assembly is installed through the mounting bracket. The near-end temperature-sensing magnetic maintenance switch is connected to the corresponding aerosol.

3. The automatic fire-fighting device for a wind turbine nacelle according to claim 2, characterized in that: The near-end temperature-sensing magnetic maintenance switch assembly includes a temperature-sensing magnet and a maintenance switch. Both the temperature-sensing magnet and the maintenance switch are mounted on the mounting bracket, and the temperature-sensing magnet and the maintenance switch are linked together to control the aerosol trigger at the corresponding position.

4. The automatic fire-fighting device for a wind turbine nacelle according to claim 3, characterized in that: The mounting brackets at corresponding locations are each equipped with warning labels with different numbers to identify different aerosol numbers.

5. The automatic fire-fighting device for a wind turbine nacelle according to claim 1, characterized in that: The heat-sensitive wire sheath inserted into the aerosol hole is fixed by sealing with adhesive.

6. The automatic fire-fighting device for a wind turbine nacelle according to claim 1, characterized in that: The first aerosol device and the third aerosol device are equipped with three-way quick connectors on the aluminum tubes at the ends of the thermal wires; two thermal wires are laid between the first aerosol device and the third aerosol device, and the two thermal wires are connected by a two-way quick connector, with their ends respectively plugged into the three-way quick connectors on the thermal wires of the first aerosol device and the third aerosol device.

7. The automatic fire-fighting device for a wind turbine nacelle according to claim 1, characterized in that: The second aerosol device is equipped with a double-ended quick connector on the aluminum tube at the end of the thermal wire; a thermal wire is laid between the third aerosol device and the second aerosol device, and its two ends are respectively plugged into the three-way quick connector and the double-way quick connector provided on the thermal wires of the third aerosol device and the second aerosol device.

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