JP2013221271A - Snow removal system and snow removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow cap removal system and a snow cap removal method, which can improve workability of work for removing snow cap of electric power equipment.SOLUTION: A snow removal system removes a snow cap adhering to a surface of electric power equipment. Injectors 1a and 1b, which include an injection part having an injection port for emitting a jet of compressed gas and liquid and light beam emission parts 4a and 4b for emitting a light beam L in the injection direction of the compressed gas and liquid, are disposed. The light beams L1 and L2 are emitted from the light beam emission parts 4a and 4b of the injectors 1a and 1b. When a range to be irradiated with the light beams L1 and L2 is formed on the snow cap, the snow cap including the range to be irradiated is removed by emitting the jet of compressed gas and liquid from the injectors 1a and 1b toward the range to be irradiated.

Description

  The present invention relates to a snow removal system and a snow removal method for removing snow covered with snow on a surface of a power facility.

  In high snowy areas such as mountainous areas and inland areas at high altitudes, snowfall and snow cover occur in power facilities. When snowfall or snowfall occurs in power equipment, problems such as power system accidents or inability to transmit power become serious, and work to remove snow that adheres to power equipment becomes necessary.

  An example of a snow removal device is disclosed in Patent Document 1. The snow removal device of Patent Document 1 includes a work vehicle, a compressor provided in the work vehicle, a nozzle that ejects compressed air, and the like. When the compressed air from the compressor is sprayed from the nozzle tip toward the snow, The snow covered with air is blown away and removed.

JP 2004-346484 A

  In order to remove the snow cover of the power equipment by the method described in Patent Document 1, it is necessary to transfer the work vehicle to the vicinity of the power equipment. However, it is often difficult to transfer large-scale items such as work vehicles to mountainous areas and snowy areas. In addition, when only the compressor is transported, the weight is heavy, so the burden of transporting work is large, and it is difficult to transport to a mountainous area or a snowy area.

  Moreover, since the thing of patent document 1 injects compressed air, it becomes difficult to recognize visually whether compressed air is sprayed on the target position. For this reason, it is necessary to make the tip of the nozzle as close as possible to the snow to be removed and to inject the compressed air at a short distance from the snow. For this reason, in the power equipment such as a steel tower, it is necessary to bring the tip of the nozzle close to the entire range of the snow-covered position, so that workability is poor. In particular, at the upper part of the steel tower, the tip of the nozzle cannot be easily approached.

  Therefore, in view of the above circumstances, the present invention provides a snow cover removal system and a snow cover removal method that can improve the workability of snow removal work of electric power equipment.

  A snow removal system of the present invention is a snow removal system that removes snow covered on the surface of a power facility, and has an injection part having an injection port for injecting compressed gas and liquid, and light rays in the injection direction of the compressed gas and liquid. And a light emitting unit that radiates the light beam, and when the light beam is emitted from the light beam emitting unit of the spraying device and the irradiation range of the light beam is formed on the snow cover, toward the irradiation range Compressed gas and liquid are jetted from the jetting device to remove snow cover including the irradiation range.

  According to the snow removal system of the present invention, the light beam is ejected before the compressed gas and the liquid are ejected from the ejection device. As a result, the position to be ejected can be confirmed in advance, so there is no need to bring the ejection port of the ejection device close to the snow covered area to be removed, and compressed gas and liquid can be introduced into the snow covered area even from a remote position. Can be injected. Further, since the compressed gas and liquid are jetted toward the snow cap, it has a melting action in addition to the snow blow-off action, and moreover, the jetted matter (gas and liquid) is injected during the jetting. It can be visually confirmed whether or not the snow cover to be removed has been reached.

  In the above-described configuration, when a plurality of injection devices are arranged at different positions and an intersection of light beams emitted from the light radiation section of each injection device is formed, each injection toward the intersection with the intersection as the irradiation range Compressed gas and liquid can be ejected from the device. That is, the range in which the compressed gas and the liquid are injected from one injection device and the range in which the compressed gas and the liquid are injected from another different injection device can be made substantially the same. Spray liquid. Thereby, the snow removal effect can be enhanced.

  The said structure WHEREIN: The said injection apparatus is equipped with the distance measurement means which can measure the distance to the snow cap which should be removed based on the light ray radiated | emitted from the said light radiation part, The measurement distance by the said distance measurement means is a preset distance When in range, compressed gas and liquid can be injected from a single injection device towards the irradiation range. If it does in this way, even if it is a single injection device, the snow removal effect can be heightened.

  The said structure WHEREIN: A snow melting agent can be injected from the said injection port. Thereby, the melting effect of snow can be improved, and the snow removal effect can be enhanced.

  The said structure WHEREIN: The said injection apparatus can be equipped with a thermometer and / or a hygrometer. Thereby, the snow removal effect can be enhanced by adjusting the liquid temperature to be jetted or the jet amount of compressed air in accordance with the external environment (temperature and humidity).

  In the above-described configuration, the mixing ratio setting table in which a plurality of mixing ratio patterns of compressed gas and liquid are set, and a selection unit that selects one pattern from the mixing ratio setting table, the ratio based on the selected pattern Compressed gas and liquid can be ejected at. That is, various ratios of the compressed gas and the liquid can be changed. In general, the closer the distance to the snow, the higher the effect of removing compressed gas, and the farther the distance, the higher the snow removal effect of the liquid. can do.

  The said structure WHEREIN: The flight body which mounts the said injection apparatus is provided, this flight body can be arrange | positioned above snow-capped, and a compressed gas and a liquid can be injected below. As a result, it is possible to remove even snow at high places where compressed gas and liquid are difficult to reach by injection from the ground side. In addition, a strong wind is blown downward in the so-called downwash (a phenomenon in which the airflow is directed downward) where snow is present. Therefore, the snow removal effect can be promoted by a combination of the compressed gas from the injection device and the influence of the wind due to the downwash. Furthermore, by jetting the compressed gas and liquid in the direction directly below, the balance of the flying vehicle during injection can be stabilized, and the impact on the flying vehicle during injection can be reduced.

  The snow removal system and the snow removal method of the present invention can inject compressed gas and liquid to a desired position without bringing the injection port of the injection device close to the snow covered area to be removed. The workability of the snow removal work can be improved.

It is a figure which shows the snow removal system of 1st Embodiment of this invention. It is a simplification figure of the injection device which constitutes the snow removal system of the present invention. It is a figure which shows the snow removal system of 2nd Embodiment of this invention. It is a figure which shows the snow removal system of 3rd Embodiment of this invention.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The snow removal system of the present invention removes snow covered with electric power equipment (particularly, power transmission equipment in mountains). In the present embodiment, the power facility is the steel tower 50, but may be an electric wire, an insulator, an overhead ground wire, or the like. As shown in FIG. 1, the snow removal system includes a first injection device 1a and a second injection device 1b.

  The 1st injection device 1a and the 2nd injection device 1b employ | adopt the same structure. As shown in FIG. 2, the first and second injection devices 1 a and 1 b include injection units 3 a and 3 b that inject compressed gas, and light beam emission units 4 a and 4 b that emit light.

  The injection units 3a and 3b use an impulse fire extinguishing device (impulse gun). An impulse fire extinguisher is a device that shoots water like a gun with compressed air in a very fine mist. That is, the injection units 3a and 3b include gas supply sources 7a and 7b, liquid supply sources 8a and 8b, and cylindrical bodies 10a and 10b. The gas supply sources 7a and 7b are air cylinders that store compressed gas (air in this embodiment), and the liquid supply sources 8a and 8b are water tanks that store liquid (water in this embodiment). The gas supply sources 7a and 7b and the cylindrical bodies 10a and 10b are connected via hoses 11a and 11b, and the liquid supply sources 8a and 8b and the cylindrical bodies 10a and 10b are connected via hoses 12a and 12b. Has been.

  The cylindrical bodies 10a and 10b are made of, for example, stainless steel, and the inside is supplied with gas chambers 5a and 5b into which air is introduced from the gas supply sources 7a and 7b, and water is introduced from the liquid supply sources 8a and 8b. Liquid chambers 6a and 6b are arranged in series. Opening / closing shutters 13a and 13b are provided between the gas chambers 5a and 5b and the liquid chambers 6a and 6b. Then, by opening and closing the open / close shutters 13a and 13b in a short time of several tens of milliseconds, compressed air is discharged from the gas chambers 5a and 5b to the liquid chambers 6a and 6b. The front ends of the liquid supply chambers 6a and 6b (opposite to the gas supply chambers 5a and 5b) serve as injection ports 9a and 9b through which compressed air and water are injected. From the pressure of the compressed air, water can be discharged at high speed as fine particles from the injection ports 9a and 9b of the liquid chambers 6a and 6b.

  It is preferable to spray the snow melting agent when or before and after the compressed air and water are sprayed from the spray ports 9a and 9b. Examples of the snow melting agent include acetic acid such as calcium acetate and magnesium acetate, chloride such as calcium chloride, sodium chloride and magnesium chloride, urea and the like. Among these, the acetic acid type has a relatively weak corrosive action and is more suitable as a snow melting agent used in the present invention.

  The injection devices 1a and 1b include mixing ratio setting tables 16a and 16b in which a plurality of mixing ratio patterns of compressed gas and liquid are set, and selection means 15a and 15b that select one pattern from the mixing ratio setting tables 16a and 16b. And. In FIG. 2, in the mixing ratio setting tables 16a and 16b, a plurality of patterns of mixing ratios (for example, volume ratios) of compressed gas and liquid are defined. Although three patterns are defined in this embodiment, the number of patterns is not limited to three as long as it is two or more.

  In FIG. 2, pattern 1 indicates that the volume ratio of compressed air to be injected and water is 2: 3, pattern 2 is 1: 1, and pattern 3 is 3: 2. When the distance to the snow is far, the water removal effect is high, and the selection unit 15 selects the pattern 1 having a high water ratio. Thereby, it adjusts in the cylindrical bodies 10a and 10b so that the volume ratio of compressed air and water becomes 2: 3, and compressed air and water are injected at this ratio. Further, since the snow removal effect of compressed air becomes high when the distance to the snow is close, the pattern 3 having a high ratio of compressed air is selected by the selection means 15 or is selected in other cases. The means 15 selects the pattern 2 in which the ratio of compressed air and water is the same. In this manner, a pattern corresponding to the distance can be selected in consideration of the separation distance to the snow cover.

  The injection devices 1a and 1b are provided with a publicly known thermometer (not shown) and a hygrometer (not shown). As a result, the environment (temperature, humidity) in which this system is used can be measured, and the effect of removing snow can be improved by adjusting the liquid temperature to be ejected and the amount of compressed air injected according to the temperature and humidity. be able to.

  The light radiation parts 4a and 4b emit visible light (laser light in the present embodiment), and laser light is emitted from the outer peripheral edges of the ejection ports 9a and 9b. A laser pointer generated by a semiconductor laser is condensed by an optical system to form a light beam, and this light beam is projected onto a projection surface to constitute a laser pointer that performs spot display. The laser beams emitted by the light beam emitting portions 4a and 4b travel straight in the axial direction of the cylindrical bodies 10a and 10b, starting from the outer peripheral edge portions of the injection ports 9a and 9b. Therefore, the laser beam goes straight in the same direction as the jet direction of the compressed air and liquid jetted from the jet ports 9a and 9b, and indicates the jet direction of the compressed air and liquid.

  As shown in FIG. 1, the snow removal system of the present invention is configured by disposing the first and second injection devices 1 a and 1 b in different positions in the vicinity of a steel tower 50. The injection devices 1a and 1b are arranged within a range in which the injected compressed air and water can go straight up to the snow cover, for example, within a radius of 1 m to 20 m from the snow cover to be removed.

  Next, a snow removal method using the snow removal system of the present invention will be described. First, the first snow beam L1 is irradiated from the first injection device 1a and the second laser beam L2 is irradiated from the second injection device 1b to the snow cover. That is, two laser beams L1 and L2 having different starting points are simultaneously generated by simultaneously irradiating laser beams from different positions. Here, the term “simultaneous” refers to all or a part of the time during which the first laser beam L1 is generated, as long as the second laser beam L2 is generated, and two laser beams are generated simultaneously. Means you have time. Accordingly, the generation times of the laser beams L1 and L2 do not have to be the same, and the generation time of the first laser beam L1 and the generation time of the second laser beam L2 may be different.

  After the first laser beam L1 and the second laser beam L2 are generated, the starting position of the laser beam (that is, the injection port 9a, the second laser beam L2 intersects with the first laser beam L1 and the second laser beam L2). 9b) and the direction of the laser beam (that is, the direction of the injection ports 9a and 9b). At this time, the path of the first laser beam L1 emitted from one side (for example, the first injection device 1a) is fixed, and an intersection is formed at any position of the first laser beam L1. The starting point position and direction of the second laser beam L2 may be adjusted. Further, even if both the starting point position and direction of the first laser beam L1 and the starting point position and direction of the second laser beam L2 are adjusted so that an intersection is formed in the snow covered area to be removed. Good.

  When the intersection of the first laser beam L1 and the second laser beam L2 is formed, compressed air and liquid are ejected from the first ejection device 1a and the second ejection device 1b toward the intersection. Thus, since the position which should be injected can be confirmed in advance, compressed air and water can be injected to a desired position without bringing the injection port of the injection device close to the snow covered range to be removed. . Thereby, workability | operativity of the snow-covering work of a steel tower can be improved.

  Moreover, since compressed gas and liquid are sprayed toward the snow cover, it has a melting action in addition to the snow blowing action, and therefore effectively removes the snow cover in the range including the intersection. Furthermore, it is possible to visually check whether the projectile (gas and liquid) has reached the snow to be removed during the injection. Moreover, the range which injects compressed air and water from the 1st injection device 1a, and the range which injects compressed air and water from the 2nd injection device 1b can be made substantially the same, and compressed air and water can be injected from multiple directions. Spray. Thereby, the snow removal effect can be enhanced.

  FIG. 3 shows a snow removal system according to a second embodiment of the present invention. The first injection device 1a is mounted on a flying object 20 disposed above the snow cover. In this embodiment, the flying body 20 is a helicopter. Similar to the first embodiment, the second injection device 1b is disposed on the ground side. In this case, the first injection device 1a is installed in a range where the temperature rises due to the exhaust heat of the flying body 20. Thereby, the water temperature in the 1st injection device 1a rises by the exhaust heat of the flying body 20, for example, hot water of about 20 to 60 ° C. can be injected, and the first injection device 1a is frozen. Can be prevented, and the snow melting effect can be enhanced.

  The laser beam L2 from the second injection device 1b is emitted from below the snow cover, and the laser beam L1 from the first injection device 1a is emitted from above the snow cover. Also, compressed gas and liquid are jetted downward from the first jetting device 1a. As a result, a strong wind is blown downward in the so-called downwash (a phenomenon in which the airflow is directed downward) where snow is present. Accordingly, the compressed gas from the first injection device 1a and the influence of the wind due to the downwash can be combined to promote the snow removal effect, and the balance of the flying vehicle during injection can be stabilized, The impact on the flying object 20 at the time can be reduced.

  Also in the case of the second embodiment, an intersection is formed by the laser beam L1 and the laser beam L2, and then compressed air and water are ejected from the first injection device 1a, and compressed air and water are ejected from the second injection device 1b. When sprayed, it is possible to remove the snow cover in the range including the intersection.

  As described above, the snow removal system of the second embodiment has the same effects as the snow removal system of the first embodiment. In particular, the laser beam L1 is radiated from the flying object 20 and the compressed air and water are jetted from above or below the snow cover, so that it is difficult for the compressed air and water to reach by jetting from the ground side. Even snow can be removed effectively. In the snow removal system shown in FIG. 3, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals as those in FIGS. 1 and 2, and the description thereof is omitted.

  FIG. 4 shows a snow removal system according to a third embodiment of the present invention. In this case, a single injection device 1 is arranged. Although FIG. 4 shows a state in which the injection device 1 is arranged on the ground side, the injection device 1 may be mounted on the flying object 20 and the ground injection device 1 may be omitted. The injection device 1 according to the present embodiment includes a distance measuring unit (not shown) that can measure the distance to the snow cover to be removed based on the laser beam L emitted from the beam emitting unit 4. As this distance measuring means, a publicly known laser distance meter can be used. That is, the laser beam is applied to the target (snow-covered snow), and the measurement distance H from the light emitting section 4 to the snow-covered snow is obtained from the reflected laser transmission time.

  When the compressed distance and the liquid are ejected from the ejection device 1 toward the irradiation range of the laser L when the measurement distance H by the distance measuring means is within the preset distance range, the snow covered in the irradiation range is effectively removed. can do.

  Thus, in 3rd Embodiment, even if it is the single injection apparatus 1, the snow removal effect can be improved. In the snow removal system shown in FIG. 4, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals as those in FIGS. 1 and 2, and the description thereof is omitted.

  While the embodiments and examples of the present invention have been described above, the present invention is not limited to these and various modifications can be made. For example, in the embodiment, two injection devices 1 are provided, but three or more injection devices may be provided. When arrange | positioning the injection apparatuses 1a and 1b on the ground side, you may use it in the state mounted on the stand. Only one of the thermometer and the hygrometer may be provided, or both may be omitted. All the injection devices 1 may not have the same configuration, and may have different sizes or different shapes. As long as the flying object 20 can fly and can mount the injection devices 1a and 1b, the flying object 20 may be an aircraft or the like. In the second embodiment, the second injection device 1b is mounted on another helicopter, and in all the injection devices 1a and 1b, the laser beams L1 and L2 are emitted from above or below the snow cover and from the snow cover. Alternatively, the compressed gas and liquid may be ejected from above or below. Furthermore, the intersection of rays can be confirmed more accurately using a monitor as well as visual observation. In the third embodiment, the distance measuring means adds a function of notifying by an alarm or LED lighting when measuring the distance to the snow cover, or when mounted on the flying object 20, an approach limit distance to the transmission line You may add a function that warns you when you get close to. The three patterns of the volume ratio shown in FIG. 2 are examples, and the present invention is not limited to this, and various volume ratios can be set.

DESCRIPTION OF SYMBOLS 1, 1a, 1b Injection apparatus 3a, 3b Injection part 4, 4a, 4b Light emission part 9a, 9b Injection port 15 Selection means 16 Mixing ratio setting table 20 Flying object 50 Steel tower L, L1, L2 Laser beam H Measurement distance

Claims (7)

A snow removal system that removes snow from the surface of a power facility,
An injection device including an injection unit having an injection port for injecting a compressed gas and a liquid, and a light beam emission unit for emitting a light beam in the injection direction of the compressed gas and the liquid is disposed.
When a light beam is emitted from the light beam emitting portion of the spraying device and the light beam irradiation range is formed on the snow cover, the compressed gas and liquid are sprayed from the spraying device toward the light irradiation range, and the irradiation range is included. A snow removal system characterized by removing snow from snow.   When a plurality of injection devices are arranged at different positions and an intersection of light beams emitted from the light radiation section of each injection device is formed, the intersection point is set as the irradiation range, and the compressed gas from each injection device toward the intersection point The snow removal system according to claim 1, further comprising jetting a liquid.   The ejection device includes a distance measuring unit that can measure a distance to the snow cover to be removed based on a light beam emitted from the light beam emitting unit, and a distance measured by the distance measuring unit is within a preset distance range. 2. The snow removal system according to claim 1, wherein compressed gas and liquid are sprayed from a single spray device toward the irradiation range.   The snow removal system according to any one of claims 1 to 3, wherein a snow melting agent is injected from the injection port.   The snow removal system according to any one of claims 1 to 4, wherein the spray device includes a thermometer and / or a hygrometer.   A mixing ratio setting table in which a plurality of patterns of mixing ratios of compressed gas and liquid are set, and a selection means for selecting one pattern from the mixing ratio setting table, and compressed gas at a ratio based on the selected pattern The snow removal system according to any one of claims 1 to 5, wherein a water and a liquid are ejected.   The snow removal system according to claim 6, further comprising a flying body on which the jetting device is mounted, the flying body being disposed above the snow cover and jetting compressed gas and liquid downward.

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