JPH036726B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The invention of this application relates to a method of melting snow on a power transmission line suspension support using a heat pipe having a heat generating function.

BACKGROUND TECHNOLOGY As is well known, a heat pipe heats or cools an appropriate heat medium provided at the other end by repeatedly transporting heat from an appropriately provided heat source from one end. Since the heat pipe does not particularly generate heat or absorb heat, it is necessary to provide a heating source or a cooling source separately from the heat pipe body depending on the purpose of use. For example, when using a heat pipe to melt ice and snow that has accumulated on a power transmission line suspension support such as a steel tower, it is preferable to use natural energy that does not require energy costs, such as geothermal heat or underground water, as the heating source. In other words, when using geothermal energy, a geothermal well is dug quite deep, and one end of a heat pipe is inserted into the geothermal well, and the heat from the underground heat or the hot water obtained by pumping water into the geothermal well is transferred through the heat pipe. The snow is melted by conveying it to the transmission line suspension section of the steel tower.

Problems to be Solved by the Invention However, when using geothermal heat to melt snow on suspended supports of power transmission lines, energy costs are almost negligible;
The need to dig 20 m) led to problems such as increased equipment costs and limited areas where geothermal energy could be used.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of melting snow from a power transmission line suspension support at low cost.

Means for Solving the Problems Each of the inventions of this application melts snow in the following manner in order to achieve the above objects. That is, in the method of the present invention, the outer body or wick at one end of the heat pipe is made of a low-Kyrie material, and the one end is made flexible, and the one end of the heat pipe is connected to the surroundings of the power transmission line. At the same time, the other end is placed on the power transmission line suspension part of the power transmission line suspension support,
The low Kyuri material is made to generate heat by the magnetic field generated by power transmission, and the heat is transferred to the transmission line suspension part of the transmission line suspension support by a heat pipe to remove ice and snow attached to the transmission line suspension part. It is characterized by its ability to melt.

Function: In the snow melting method of the present invention, a heat pipe is used in which the exterior body or cover at one end (evaporation part) is made of a low Curie material and that part is made flexible. Then, the part (one end; evaporation part) of the heat pipe that is made of a low-Kyuri material and is flexible is wrapped around the power transmission line, and the other end (condensation part) is attached to the transmission line suspension part of the transmission line suspension support. will be placed in

Therefore, since the low-Kyrie material part of the heat pipe is located within the alternating current magnetic field generated by power transmission, the low-Kyrie material generates heat when the temperature is below the Kyrie point, and this heat causes The liquid-phase working fluid inside the heat pipe evaporates, and the resulting gas-phase working fluid flows to the other end where the temperature is lower, that is, the part located at the power transmission line suspension section, transferring heat to the ice and snow on the power transmission line suspension section. Give this to dissolve. In other words, the magnetic field that inevitably occurs with power transmission is used to generate heat in the low-Kyrie material around the power transmission line, and the heat pipe functions to transport the material to the suspended part of the power transmission line and melt the ice and snow.

Here, since the low Curie material part (one end) of the heat pipe is flexible and can be wrapped around the power transmission line, it can effectively reduce the magnetic field around the power transmission line compared to simply attaching one end of the heat pipe to the power transmission line. can be used to generate a larger amount of heat and to reliably and sufficiently remove ice and snow from suspended parts of power transmission lines.

Examples Next, the snow melting method of the present invention will be explained based on examples.

First, to explain the heat generating heat pipe used in the snow melting method of the present invention, as shown in FIG. , and a working fluid sealed inside the exterior body 1, one end of which serves as an evaporator 4 where the working fluid evaporates, and the other end where the working fluid condenses. A condensing section 5 is provided, and a heat insulating section 6 is provided between the two. The evaporation section 4
Low Curie material with low Curie point (e.g. 0℃~20℃) e.g. nickel 35.23%, chromium
10.8% silicon, 1.05% silicon, and 52.92% iron.
is made of a material that generates little heat due to hysteresis loss etc. even when placed in a magnetic field. The wick 2 is made of, for example, an alloy net, and the wick 2 is made of an alloy net.
Like the condensing section 5 and the heat insulating section 6, it is made of a material with low magnetic properties. And also evaporation section 4
The exterior body 1 is made of a flexible pipe, such as a corrugated pipe.

When the temperature of the evaporator 4 made of a low-Kyrie material in the heat pipe 3 configured as described above is below the above-mentioned Kyrie point, when the heat pipe 3 is installed in a magnetic field, the low-Kyrie material in a state below the Kyrie point will be Since it is a ferromagnetic material, the evaporator 4 generates heat due to the alternating magnetic field, and as a result, the heat pipe 3 transports the heat. That is, as the evaporator 4 generates heat, the liquid-phase working fluid that has permeated the wick 2 evaporates and becomes a gas-phase working fluid, and the gas-phase working fluid is transferred from the evaporator 4 to the heat insulating part due to the pressure difference inside the wick 2. 6 and reaches the condensing section 5, where the latent heat of the gas phase working fluid is taken away by an appropriate cooling source (not shown) provided in the condensing section 5. As a result, the gas phase working fluid becomes a liquid phase working fluid and condenses and adheres to the inner wall of the exterior body 1, and the condensed liquid phase working fluid permeates into the wick 2 built in the condensing section 5, and the capillary tube of the wick 2. Due to this phenomenon, the inside of the wick 2 is refluxed from the condensing section 5 to the evaporating section 4, and the liquid phase working fluid is evaporated again by the heat of the evaporating section 4, becoming a gas phase working fluid and carrying heat. In this way, the heat of the evaporator section 4 made of a low Curie material due to the alternating current magnetic field is repeatedly transported to an appropriate cooling source provided in the condensing section 5. Furthermore, when the temperature of the evaporator 4 of the exterior body 1 reaches or exceeds the Curie point, the magnetic properties of the low-Qurie material deteriorate, so that the evaporator 4 does not generate heat even in a magnetic field, so the heat transport of the heat pipe stops.

In the above example, the evaporation part of the exterior body is made of a low-Kyrie material, but at least a part of the exterior body or the wick may be made of a low-Kyrie material.

FIG. 2 shows an embodiment of a snow melting method using the heat pipe 3 described above. In the following description, the same parts as those of the heat pipe 3 shown in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 2, a flexible evaporator section 4 in the heat pipe 3 is spirally wound around a power transmission line 8 disposed vertically on a power transmission line suspension support, for example, a steel tower 7, and horizontally extended from a base portion of the steel tower 7. A heat pipe 3 is attached to the upper surface of the power transmission line suspension part 9 that protrudes from the
A condensing section 5 is arranged. Therefore, the ice and snow that has accumulated on the upper surface of the power transmission line suspension section 9 is melted as follows. That is, during snowfall, the atmospheric temperature is below room temperature, that is, below the Curie point, so the low Curie material becomes ferromagnetic due to its characteristics.
Therefore, the evaporator 4 wrapped around the power transmission line 8
Heat is generated by the alternating current magnetic field, and the liquid-phase working fluid that permeates into the wick 2 evaporates and becomes a gas-phase working fluid.
Due to the pressure difference inside the switch 2, the gas-phase working fluid flows from the evaporator section 4 to the condensing section 5, and as a result, the latent heat of the gas-phase working fluid is released to the ice and snow on the power transmission line suspension section 9, thereby melting the ice and snow. Thereafter, the gas-phase working fluid that has been deprived of latent heat condenses to become a liquid-phase working fluid and permeates into the wick 2, and the liquid-phase working fluid flows back from the condensing section 5 to the evaporating section 4 due to capillary action in the wick 2. .
In this way, the heat generated by the alternating current magnetic field of the power transmission line 8 is repeatedly transferred to the ice and snow on the power transmission line suspension section 9 to melt the ice and snow.

In addition, in the above embodiment, the flexible evaporator was wrapped around the vertically arranged power transmission line, but it is also possible to wrap the evaporator around the power transmission line suspended almost horizontally between the transmission line suspension supports. Of course it's a good thing.

Effects of the Invention As is clear from the above explanation, according to the snow melting method of the present invention, one end of the heat pipe made of a low-Kyuri material is made to generate heat by the alternating current magnetic field of the existing power transmission line, and the heat is transferred to the suspended power transmission line. Since the ice and snow attached to the power transmission line suspension part can be transported to the power transmission line suspension part in the support body and melted, the ice and snow on the power transmission line suspension part can be melted without using a heating source separate from the heat pipe body. Can be done. In addition, snow melting methods that utilize natural energy such as geothermal heat are limited in the areas where they can be applied, but this invention can melt ice and snow that has adhered to any suspended part of a power transmission line, and has a simple configuration that reduces costs. It is possible to measure the melting point of ice and snow adhering to power transmission line suspension parts at a low cost. Furthermore, since the Curie point of the portion of the heat pipe on the evaporation section side is low, heat generation due to hysteresis loss can be prevented during high temperature periods without ice or snow even if the heat pipe is placed in an alternating current magnetic field. Furthermore, in this invention, a heat pipe having a flexible end portion having a low Curie material is used to
Because one end of the heat pipe is wrapped around the outer circumference of the power transmission line, it is possible to effectively utilize the magnetic field around the power transmission line, resulting in a greater amount of heat generation compared to simply placing the heat pipe along the power transmission line. As a result, ice and snow on suspended parts of power transmission lines can be melted reliably and sufficiently.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an example of the configuration of the heat pipe used in the present invention, and Fig. 2 is a schematic diagram showing a situation in which the snow melting method of the present invention is implemented using the heat pipe shown in Fig. 1. This is an overall diagram. 1...Exterior body, 2...Witch, 3...Heat pipe, 7...Tele tower, 8...Power transmission line, 9...Power transmission line suspension part.

Claims (1)

[Claims] 1. The exterior body or wick at one end of the heat pipe is made of a low Curie material, and the one end is made flexible,
The one end of the heat pipe is wrapped around the power transmission line, and the other end is placed on the power transmission cable suspension part of the power transmission line suspension support, and the low Curie material is exposed to the magnetic field generated by power transmission. A heat generating type heat pipe is used, which is characterized in that the heat pipe generates heat, and the heat is transported to the power transmission line suspension part of the power transmission line suspension support by the heat pipe to melt ice and snow attached to the power transmission line suspension part. Snow melting method for suspended power transmission line supports.