Automatic fire extinguishing device for cabin of wind turbine generator

Abstract

The automatic fire extinguishing device comprises a dry powder fire extinguisher hung in the cabin, a powder spraying opening in the bottom of the dry powder fire extinguisher is sleeved with a guide pipe, the guide pipe is a shaping hose capable of being bent at will and determining the direction, and a fixing ring is fixed to the upper end of the guide pipe; the fixing ring is made of a permanent magnet material and detachably connected with the dry powder extinguisher through magnetic force, and a detachably-connected spray head is fixed to the lower end of the guide pipe. According to the automatic fire extinguishing device for the wind turbine generator cabin, the dry powder fire extinguisher is hung on the side wall of the cabin, and the spraying direction of contents can be flexibly adjusted through the bent guide pipe. And the adjusting nozzle is transversely arranged and faces the inflammable part at the side end or the bottom of the equipment, so that blind angle shielding can be avoided, a fire extinguishing agent is accurately sprayed to a fire point at the first time during fire, and fire diffusion can be effectively controlled.

Description

TECHNICAL FIELD

[0001] The application relates to a fire extinguishing technology in a nacelle of a wind turbine generator, in particular to an automatic fire extinguishing device for the nacelle of the wind turbine generator. BACKGROUND

[0002] The nacelle of the wind turbine generator is installed with core equipment of wind power generation, including a main shaft, a gear box, a brake, a high-speed coupling, a main control cabinet and a generator, etc. Wind power fire accidents occur from time to time, mainly in the nacelle of the wind turbine generator.

[0003] The existing wind turbine generator nacelle is provided with a dry powder fire extinguisher for extinguishing fire. The dry powder fire extinguisher is hung on the top of the nacelle and sprays extinguishing agent downward when a fire occurs. However, the nacelle of the wind turbine generator has a long and narrow cylindrical shape, and the internal equipment is relatively large and compact, resulting in that the equipment is blocked by each other and has many dead angles.

[0004] The existing dry powder fire extinguisher is hung on the top and cannot prevent the flammable places on the side wall or the bottom of the equipment. When a fire occurs, the dry powder fire extinguisher cannot accurately spray extinguishing agent to the fire point and cannot effectively extinguish or control the fire. CONTENT OF THE INVENTION

[0005] The application provides an automatic fire extinguishing device for the nacelle of the wind turbine generator, which can prevent the flammable places on the side wall or the bottom of the equipment and effectively control the fire.

[0006] The application provides an automatic fire extinguishing device for the nacelle of the wind turbine generator, which comprises a dry powder fire extinguisher hung in the nacelle, a guide pipe sleeved on a powder spraying port at the bottom of the dry powder fire extinguisher, the guide pipe being a shaped hose capable of being arbitrarily bent and determining a direction, a fixing ring fixed on an upper end of the guide pipe, the fixing ring being made of a permanent magnet material and being detachably connected to the dry powder fire extinguisher through magnetic force, and a detachable spray head fixed on a lower end of the guide pipe.

[0007] Optionally, the top of the dry powder fire extinguisher is fixed on a horizontal plate, one side of the horizontal plate is hingedly connected to a side edge of a vertical plate, a telescopic rod is connected between open ends formed by the horizontal plate and the vertical plate, and the two ends of the telescopic rod are hingedly connected to the horizontal plate and the vertical plate respectively.

[0008] Optionally, the telescopic rod is composed of a vertical pipe and a threaded rod, a nut is rotatably connected to a pipe opening of the vertical pipe, and the threaded rod is inserted into the vertical pipe and threadedly connected to the nut.

[0009] Optionally, the spray head is a fan-shaped spray head for flat horizontal diffusion of powder.

[0010] Optionally, the device further comprises a diffusion cover and a gathering cover, which are detachably connected to the lower end of the guide pipe.

[0011] Optionally, the diffusion cover is a conical cover, and the small-diameter end is fixed to the guide pipe; and the converging cover is a conical cover with the large-diameter end fixed and sealed to the guide pipe.

[0012] Optionally, an angle gauge is fixed at the hinge between the horizontal plate and the vertical plate to determine the included angle.

[0013] Compared with the prior art, the wind turbine nacelle automatic fire extinguishing device provided by the application has the following beneficial effects:

[0014] The dry powder fire extinguisher is hung on the side wall of the nacelle, and the content injection direction can be flexibly adjusted through the bent guide pipe. The injection head is arranged horizontally and faces the flammable part at the side end or bottom of the equipment, so that the dead angle is avoided, the fire extinguishing agent can be precisely injected to the fire point at the first time when the fire breaks out, and the fire spread can be effectively controlled. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Figure 1 The figure in the nacelle of the wind turbine nacelle automatic fire extinguishing device provided by an embodiment of the application;

[0017] Figure 2 The cross-sectional view in the nacelle of the wind turbine nacelle automatic fire extinguishing device provided by an embodiment of the application;

[0018] Figure 3 The guide pipe schematic view of the wind turbine nacelle automatic fire extinguishing device provided by an embodiment of the application;

[0019] Figure 4 The left view of the wind turbine nacelle automatic fire extinguishing device provided by an embodiment of the application; Figure 3

[0020] Figure 5 The diffusion cover schematic view of the wind turbine nacelle automatic fire extinguishing device provided by an embodiment of the application;

[0021] Figure 6 The partial front view of the diffusion cover of the wind turbine nacelle automatic fire extinguishing device provided by an embodiment of the application;

[0022] Figure 7 The converging cover schematic view of the wind turbine nacelle automatic fire extinguishing device provided by an embodiment of the application;

[0023] Figure 8 ​The partial front view of the gathering cover of the automatic fire extinguishing device of the wind turbine generator nacelle provided by an embodiment of the present application;

[0024] Figure 9 The schematic diagram of the telescopic rod of the automatic fire extinguishing device of the wind turbine generator nacelle provided by an embodiment of the present application.

[0025] Marked for explanation:

[0026] Dry powder fire extinguisher 1; horizontal plate 2; vertical plate 3; telescopic rod 4; vertical pipe 401; nut 402; threaded rod 403; guide pipe 5; fixing ring 6; nozzle 7; diffusion cover 8; gathering cover 9; nacelle 10; protractor 11. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely below. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor also belong to the protection scope of the present application.

[0028] As shown in Figures 1-4 , an embodiment of the present application provides an automatic fire extinguishing device of a wind turbine generator nacelle, which comprises a dry powder fire extinguisher 1 suspended in the nacelle 10. A guide pipe 5 is sleeved on the powder outlet at the bottom of the dry powder fire extinguisher 1. The guide pipe 5 is a shaped hose capable of being bent arbitrarily and determining the direction. A fixing ring 6 is fixed on the upper end of the guide pipe 5. The fixing ring 6 is made of permanent magnetic material and is detachably connected to the dry powder fire extinguisher 1 by magnetic force. A detachable nozzle 7 is fixed on the lower end of the guide pipe 5.

[0029] In use, the dry powder fire extinguisher 1 can be suspended on the side wall of the nacelle 10. The guide pipe 5 is fixed on the outlet at the lower end of the dry powder fire extinguisher 1 through the fixing ring 6. By bending the guide pipe 5, the nozzle 7 of the guide pipe 5 can be horizontally arranged towards the side end or bottom of the equipment, so that the nozzle 7 is directed towards the cable connection or the flammable part of the equipment. The bending angle of the guide pipe 5 is less than 90° and is arc-shaped, so as to ensure the smooth discharge of the content.

[0030] In the embodiment, the dry powder fire extinguisher 1 is suspended on the side wall of the nacelle 10. The content injection direction can be adjusted flexibly by bending the guide pipe 5. The nozzle 7 is horizontally arranged and directed towards the flammable part of the side end or bottom of the equipment, so as to avoid the dead angle shielding. When a fire breaks out, the fire extinguishing agent can be precisely injected to the fire point at the first time, so as to effectively control the fire spread.

[0031] As shown in Figure 3 and Figure 4As shown, in one possible implementation, the top of the dry powder fire extinguisher 1 is fixed to the horizontal plate 2, one side of the horizontal plate 2 is hinged to the side of the vertical plate 3, and a telescopic rod 4 is connected between the open ends formed by the horizontal plate 2 and the vertical plate 3, with both ends of the telescopic rod 4 being hinged to the horizontal plate 2 and the vertical plate 3 respectively.

[0032] The vertical plate 3 is fixed to the side wall of the cabin 10, and the dry powder fire extinguisher 1 is suspended on the side wall of the cabin 10 via the horizontal plate 2. By controlling the length of the telescopic rod 4, the tilt angle of the dry powder fire extinguisher 1 can be adjusted so that the lower outlet of the dry powder fire extinguisher 1 rotates towards the equipment inside the cabin 10.

[0033] By rotating and lifting the lower outlet of the dry powder fire extinguisher 1 to the side, the bending of the guide tube 5 can be reduced, improving the discharge effect of the contents. Furthermore, by shortening the telescopic rod 4 and rotating and lifting the lower outlet of the dry powder fire extinguisher 1 to the side, in conjunction with the bending of the guide tube 5, the nozzle 7 can spray the contents from bottom to top toward the bottom of the equipment when the bending angle of the guide tube 5 is less than 90°.

[0034] like Figure 9 As shown, in one possible implementation, the telescopic rod 4 consists of a vertical tube 401 and a threaded rod 403. A nut 402 is rotatably connected to the opening of the vertical tube 401, and the threaded rod 403 is inserted into the vertical tube 401 and threadedly connected to the nut 402.

[0035] The threaded rod 403 is slidably inserted into the vertical tube 401, and the nut 402 is rotatably connected to the vertical tube 401 and threadedly connected to the threaded rod 403. After the telescopic rod 4 is hinged to the horizontal plate 2 and the vertical plate 3, rotating the nut 402 will allow the threaded rod 403 to extend and retract along the vertical tube 401.

[0036] like Figure 3 and Figure 4 As shown, in one possible implementation, the nozzle 7 is a flat, laterally diffused fan-shaped nozzle for spraying powder.

[0037] The fan-shaped nozzle can spray extinguishing agent laterally into the gaps at the bottom of the equipment, effectively covering large areas of fire in the gaps at the bottom of the equipment.

[0038] like Figures 5-8 As shown, in one possible implementation, a diffuser shroud 8 and a convergence shroud 9 are also included, which are detachably connected to the lower end of the guide tube 5.

[0039] The bottom of the guide tube 5 can be replaced with a diffuser hood 8 or a convergence hood 9, allowing for flexible setup and effective protection against different flammable conditions.

[0040] In one possible implementation, the diffuser shroud 8 is a conical mesh shroud with its small-diameter end fixed to the guide tube 5, and the gathering shroud 9 is a conical shroud with its large-diameter end sealed and fixed to the guide tube 5.

[0041] The diffuser hood 8 can cover a large area of ​​the side of the equipment, used to deal with large-area fires on the side of the equipment. The convergence hood 9 can spray extinguishing agent in a concentrated manner, protecting cable connection points or individual small equipment locations.

[0042] like Figure 5 and Figure 7 As shown, in one possible implementation, a protractor 11 for determining the included angle is fixed at the hinge of the horizontal plate 2 and the vertical plate 3.

[0043] The length of the telescopic rod 4 can be adjusted by referring to the protractor 11, thereby controlling the horizontal plate 2 to rotate and lift towards the vertical plate 3.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An automatic fire extinguishing device for a wind turbine nacelle, comprising a dry powder extinguisher (1) suspended in the nacelle (10), characterized in that: The powder outlet at the bottom of the dry powder fire extinguisher (1) is sleeved with a guide pipe (5), which is a shaped hose capable of being arbitrarily bent and determining direction, the upper end of the guide pipe (5) is fixed with a fixing ring (6) made of permanent magnetic material, which is detachably connected with the dry powder fire extinguisher (1) by magnetic force, and the lower end of the guide pipe (5) is fixed with a detachable spray head (7).

2. The wind turbine generator unit nacelle automatic fire extinguishing apparatus according to claim 1, characterized by: The top of the dry powder fire extinguisher (1) is fixed on a horizontal plate (2), one side of the horizontal plate (2) is hingedly connected with the side edge of a vertical plate (3), and a telescopic rod (4) is connected between the open end formed by the horizontal plate (2) and the vertical plate (3).

3. The wind turbine generator unit nacelle automatic fire extinguishing apparatus according to claim 2, characterized by: The telescopic rod (4) is composed of a vertical pipe (401) and a threaded rod (403), the vertical pipe (401) is rotatably connected with a nut (402) at the pipe opening, and the threaded rod (403) is inserted into the vertical pipe (401) and threadedly connected with the nut (402).

4. The wind turbine generator unit nacelle automatic fire extinguishing apparatus according to claim 1, characterized by: The spray head (7) is a fan-shaped spray head for flat transverse diffusion powder spraying.

5. The wind turbine generator unit nacelle automatic fire extinguishing apparatus according to claim 1, characterized by: A diffusion cover (8) and a converging cover (9) are further included, which are detachably connected with the lower end of the guide pipe (5).

6. The wind turbine generator unit nacelle automatic fire extinguishing apparatus according to claim 5, characterized by: The diffusion cover (8) is a conical mesh cover, the small-diameter end of which is fixed with the guide pipe (5), and the converging cover (9) is a conical cover with the large-diameter end sealed and fixed with the guide pipe (5).

7. The wind turbine nacelle automatic fire extinguishing apparatus according to claim 2 or 3, wherein: An angle gauge (11) for determining the included angle is fixed at the hinge of the horizontal plate (2) and the vertical plate (3).

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