JP2001221809A - Apparatus for preventing snow damage to device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device snow damage-preventing apparatus which can solve the problem of the devices freezing in winter, etc., without directly working on the device of the present state, such as an anemoscope, an anemometer or the like. SOLUTION: This device snow damage-preventing apparatus prevents the device 16, having a movable part 16b and set outdoors via a fixing part 16a, from snow damage. The apparatus has an umbrella-shaped heater 30 set to the periphery of the fixing part 16a of the device 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device used to protect equipment installed outdoors, such as a wind vane or an anemometer attached to a wind turbine of a wind power generation facility, from damage caused by snow or freezing. The present invention relates to a snow damage prevention device.

[0002]

2. Description of the Related Art Generally, a wind turbine of a wind power generator is provided outdoors with an anemometer and an anemometer for controlling the operation thereof. FIG. 5 shows an example of this installation, in which a horizontally extending support rod 12 is connected to the upper end of a vertically extending stand 10 in a T-shape at substantially the center thereof. An anemometer 16 and an anemometer 18 are attached to both ends of the support rod 12 via a bracket 14, and a lightning rod 20 is set up substantially at the center of the support rod 12.

The anemometer 16 is composed of a cylindrical fixed part 16a and a movable part 16b connected to the upper part of the fixed part 16a. Similarly, the anemometer 18 has a cylindrical fixed part 18a and the fixed part 16a. The movable part 18b is connected to the upper part of the movable part 18a. Then, as shown in FIG. 6, the anemometer 16 is connected to a male screw portion (bolt) 22 having a male screw carved at the lower end of the fixing portion 16a, and the male screw portion 22 is inserted into a through hole 14a provided in the bracket 14. It is fixed by inserting and tightening the nut 24. This is anemometer 1
8 is also the same.

[0004] Here, the anemometer 16 has a built-in heating heater above the fixing portion 16a so that it can be used even in winter, and the anemometer 18 similarly has a heating heater above the fixing portion 18a. Is built-in.

[0005]

However, when such an anemometer or anemometer is used in a heavy snowfall area, particularly in a humid area, the anemometer or anemometer can perform its original function due to snow damage such as snow or freezing. And the windmill cannot be driven. That is, as shown in FIG. 6, in the anemometer 16, for example, snow adheres to the movable portion 16b, and the snow around the anemometer 16 repeatedly freezes and grows. The mass 26 reaches the upper movable portion 16b of the anemometer 16 and the movable portion 16b stops moving.

[0006] In such a case, it is necessary to climb the windmill to remove a frozen portion, which not only leads to a longer stoppage time of the windmill, which leads to a decrease in sales, but also causes the windmill to move in a heavy snowy area in a mountainous area. In this case, access to the windmill becomes a major problem.

[0007] Even if the anemometer or anemometer has a built-in heater, snow and freezing are liable to occur particularly in an area with heavy snow quality (snow containing much moisture). Also,
Especially at the time of power failure, the attached heater will not function,
The problem is even more serious. Even if the power supply is restored and the built-in heater is activated, as shown in FIG.
It is not enough to melt the entire 6b.

Therefore, it is conceivable to increase the capacity of the heater incorporated in the fixed portion 16a of the anemometer 16, but this has a bad effect (high temperature) on the internal mechanical structure such as the bearing. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is directed to an apparatus which can solve problems such as freezing of equipment in winter without directly modifying existing equipment such as an anemometer and an anemometer. An object of the present invention is to provide a snow damage prevention device.

[0010]

According to the first aspect of the present invention, there is provided a snow damage prevention device for a device having a movable portion and preventing a device installed outdoors by a fixed portion from snow damage. An umbrella-shaped heater is arranged around a fixing portion of the device.

By heating only the fixed portion from the outside by the umbrella-shaped heater, it is possible to prevent the entire device from becoming hot and to prevent damage such as snow from affecting the movable portion. When the power is restored after the power failure, the umbrella-shaped heater can melt the frozen snow and the like attached to the movable part.

According to a second aspect of the present invention, there is provided an apparatus for preventing snow damage to equipment according to claim 1, wherein a space is provided between an outer peripheral portion of said equipment and an upper opening of said umbrella-shaped heater. is there. This makes it possible to prevent snow from adhering to the upper movable portion and freezing, by allowing the air heated by the heater to flow upward through the gap, particularly when the movable portion is at the upper portion. it can.

The invention according to claim 3 is characterized in that a temperature sensor for controlling on / off of the umbrella-shaped heater is attached to an outer peripheral portion of the equipment, and that the equipment according to claim 1 or 2 is protected from snow damage. Device. This makes it possible to control the external temperature of the device to the maximum allowable temperature, thereby maximizing the effect of preventing the movable portion from freezing.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for preventing wind and snow in equipment according to an embodiment of the present invention will be described with reference to FIGS. This example shows an example in which the present invention is applied to a wind vane or an anemometer attached to a wind turbine of a wind power generator. The same members as those in the conventional example shown in FIGS. Description is omitted.

As shown in FIG. 1, an anemometer 16 and an anemometer 18 are attached to both ends of the support rod 12, and a fixed portion 16a of the anemometer 16 and a lower half of a fixed portion 18a of the anemometer 18 are provided. Around the umbrella, an umbrella-shaped heater 3 spreading downward
0 are respectively arranged. A temperature sensor 32 for controlling ON / OFF of the umbrella-shaped heater 30 is attached to a position facing the upper end of the umbrella-shaped heater 30 on the outer peripheral surface of the anemometer 16. In this example, the two umbrella-shaped heaters 30 surrounding the anemometer 16 and the anemometer 18 are simultaneously turned on / off by one temperature sensor 32. Temperature sensors may be individually provided on the outer peripheral surface of the total 18 so as to be individually controlled.

As shown in FIGS. 3 and 4, the umbrella-shaped heater 30 has an umbrella-shaped heater body 40 and a hollow disk-shaped bottom plate portion 42. The lower end of the heater body 40 and the bottom plate portion are provided. 4
2 are connected in a cross shape by a heater main body mounting bracket 44. A heater 48 connected to a lead wire 46 extending from the outside is concentrically wound on the back surface of the heater main body 40, and is fixed via a fixing bond 50. Further, a heater insertion groove 52a is provided on the back surface of the heater main body 40, and a heater holding member 52 for positioning the heater 48 in the insertion groove 52a is attached.

As shown in FIG. 2, in the anemoscope 16, the male screw portion 22 connected to the lower surface of the fixing portion 16a is inserted into a through hole 42a provided in the bottom plate portion 42, and The anemometer 16 and the umbrella-shaped heater 30 are simultaneously fixed by inserting the male screw portion 22 into the through hole 14 a provided in the bracket 14 and tightening the nut 24. Here, an opening 40 a through which the trunk of the anemometer 16 is inserted is provided at the upper end of the heater main body 40. The inner diameter of the opening 40a is set slightly larger than the outer diameter of the trunk of the anemometer 16, and a space S is provided here. This applies to the anemometer 18 as well.

Next, an example of use of this embodiment will be described. In winter, when the anemometer 16 or the anemometer 18 may be damaged by snow or freezing, the umbrella-shaped heater 3
By actuating 0, these fixing portions 16a and 18a are heated. At this time, the on / off control of the external temperature of the anemometer 16 and the anemometer 18 to the maximum allowable temperature is performed via the temperature sensor 32. That is, with the heating of the umbrella-shaped heater 30, the external temperature of the anemometer 16 and the anemometer 18 rises, and when the temperature reaches or exceeds the allowable temperature, the umbrella-shaped heater 30 is turned off, and otherwise, it is always on. Control so that

As a result, it is possible to prevent the entire wind vane 16 and the anemometer 18 from becoming hot, and to prevent the snow cover from being damaged by the movable section 16.
b, 18b, and when the power is restored after a power failure, the movable portions 16b, 1
8b can melt snow and the like that have been frozen.

Further, by providing a space S between the outer periphery of the anemometer 16 or the anemometer 18 and the upper opening 30a of the umbrella-shaped heater 30, the air warmed by the umbrella-shaped heater 30 passes through the space S. Then, it flows upward, thereby preventing snow from adhering to the upper movable portions 16b and 18b and freezing.

Further, by controlling the external temperature of the anemometer 16 and the anemometer 18 to the maximum allowable temperature, the movable unit 16 is controlled.
b, 18b can maximize the effect of preventing freezing.

[0022]

As described above, according to the present invention,
For example, when an anemometer, an anemometer, or the like, which is one of the important parts of windmill operation control, is installed in a snowfall area, these devices can be protected from snow damage such as snow and freezing, and the windmill can be operated with confidence.
In addition, since the configuration is made up of additional components, it can be dealt with without changing the control system of the conventional anemometer or anemometer.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an apparatus provided with a snow damage prevention device according to an embodiment of the present invention.

FIG. 2 is a front view showing the state of attachment of the snow damage prevention device.

FIG. 3 is a rear view showing the umbrella-shaped heater.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a perspective view showing an example of installation of a conventional device.

FIG. 6 is a front view showing an attached state of a device for explaining a problem to be solved by the invention.

[Explanation of symbols]

 16 Anemometer 16a Same as fixed part 16b Same as movable part 18 Anemometer 18a Same as fixed part 18b Same as movable part 22 Male screw part 24 Nut 30 Umbrella-shaped heater 30a Opening part 32 Temperature sensor 40 Heater body 42 Bottom plate part 44 Heater body Mounting bracket 46 Lead wire 48 Heater 50 Fixing bond 52 Heater holding bracket 52a Heater insertion groove S Space

Claims (3)

[Claims] 1. A snow damage prevention device for a device having a movable portion and preventing a device installed outdoors through a fixed portion from snow damage, wherein an umbrella-shaped heater is arranged around the fixed portion of the device. A device for preventing snow damage of equipment. 2. The apparatus according to claim 1, wherein a space is provided between an outer peripheral portion of the device and an upper opening of the umbrella-shaped heater. 3. A device according to claim 1, wherein a temperature sensor for controlling on / off of said umbrella-shaped heater is attached to an outer peripheral portion of said device.