JPH0881903A - Far-infrared radiation type snow-melting device - Google Patents

Abstract

PURPOSE: To effectively melt snow accumulated between a main rail and a tongue rail near a track switching part. CONSTITUTION: There are installed gas burner units 5, 5, which are loaded on sleepers 4, 4 installed facing respective rails 1, 1 of a track switching part, outside each rail 1, 1, radiation tubes 6, 6 which are communicated with a combustion chamber of the gas burner unit and heated with combustion flames and combustion waste gas inside so as to radiate far-infrared beams, and covers 7, 7 with a reflector boards, which cover the radiation tubes. A fuel gas supply device 8, which supplies fuel gas to each of the gas burner units 5, 5, is installed near the upstream side of the track switching part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to snow melting between a main rail and a tongue rail at a track switching portion (point) and a far infrared ray from a far infrared radiation tube heated by a gas or gas fuel combustion device. The present invention relates to a far-infrared radiation type snow melting device which is performed by waste heat of combustion exhaust gas.

[0002]

2. Description of the Related Art Snow in a track switching section in a snowy area is
In addition to classical means such as a cantera, a burner is placed below the floor plate between the sleepers to heat the floor plate and the traveling path due to the thermal power of the burner. What to do (Actual Kaisho 5
2-52206), one in which hot air generated by a hot air generator is blown out from a predetermined location through a main duct and a branch duct (Japanese Patent Laid-Open No. 58-7002), and a combination of heat pipes (Japanese Patent Laid-Open No. H08-200702). No. 3-183806), there are many proposals such as water spraying or hot water jetting instead of hot air to melt snow. Besides this,
It has been attempted to install an electric heat type far infrared heater in a high place in the air and to prevent snow melting, melting snow and freezing over a wide range by the heat ray emitted from the far infrared heater, and as a far infrared ray for snow melting, the wavelength range is Is known to be 3.75 to 4 μ, and among them, the dominant wavelength of 3.8 μ is known to be effective.

[0003]

In the above conventional apparatus, for example, the hot-air type combustion equipment capacity is from 3 to 35,000 Kcal / h.
It requires a certain amount of equipment, the initial cost is high, the heat radiation loss is large, the maintainability is poor, and there is a problem during the work of fixing the track maintenance work. Further, when the snow-melting / snow-melting is performed over a wide range by electric heat type far-infrared irradiation, a large amount of power consumption is required to require a dedicated substation facility, which is economically problematic.

On the other hand, in view of the fact that the point inversion due to snowfall is mainly the snowfall between the first floor plate and the fourth floor plate, the object of the present invention is to set the main rail and the tongue rail in the above range. An object of the present invention is to provide a snow melting device that can effectively perform snow melting in the meantime and can also eliminate the conventional drawbacks.

[0005]

DISCLOSURE OF THE INVENTION A far-infrared radiation type snow melting apparatus according to the present invention includes a gas burner unit and a gas burner unit thereof on sleepers outside each rail along two main rails of a track switching unit. The orbit switching unit is provided in communication with the combustion chamber of the unit, and a radiation tube that radiates far infrared rays by heating the inside of the tube with its combustion flame and combustion exhaust gas, and a cover body with a reflection plate that covers the radiation tube. Near the upstream side,
A gas fuel supply device for supplying gas fuel is installed in each gas burner unit.

According to the present invention, in addition to the above structure, a small exhaust hole for ejecting the combustion exhaust gas in the radiant pipe toward the floor plate portion on the main rail side is appropriately provided in the latter half portion of the radiant pipe. A plurality of holes are drilled.

Further, according to the present invention, the cover body with a reflection plate has a hook-and-loop shape with the side facing the main rail being open, and the upper surface of the cover body is easily slid down by the snow accumulated on the upper surface. It is designed to have a slope.

[0008]

[Operation] Fuel can be supplied by a gas cylinder convenient for transportation. When snowfall or freezing temperature is detected by a known snowfall sensor or freezing sensor, it is easy to automatically ignite the gas burner unit to start combustion, and to automatically control the combustion by a temperature sensor or the like. When the radiant tube is heated by this combustion, the main rail of the track switching portion facing the radiant tube and the floor plate portion around the rail are heated by far infrared rays emitted from the radiant tube. At the same time, the floor plate portion on the tongue rail side is also heated by heat conduction, so snow melting between this rail and the tongue rail will be effectively performed. Also, the cover body with a reflector is
The radiated far infrared rays can be concentrated on the rails and the floor plate portion around the rails by the surrounding reflection plates to perform effective heating and prevent wasteful heat dissipation.

Even if the heating temperature is lowered and the irradiation intensity of far infrared rays is lowered in the latter half of the radiant tube separated from the gas burner unit, a small exhaust hole is bored in the latter half of the radiant tube,
By ejecting the combustion exhaust gas toward the floor plate portion from the exhaust hole, the floor plate portion is also heated by the combustion exhaust gas, thereby ensuring reliable snow melting regardless of the distance from the gas burner unit.

[0010]

EXAMPLE FIG. 1 shows an example in which a snow melting device according to the present invention is installed in a track switching section in a track bed. Reference numeral 1 is a main rail, 2 is a tongue rail, 3 is a floor plate made of mild steel, and 4 is a sleeper. On the sleepers 4 and 4 outside the main rails 1 and 1, in parallel with the two main rails 1 and 1 of the track switching unit, the gas burner units 5 and 5, the radiation tubes 6 and 6, and the cover body 7 are provided. , 7 are installed respectively, and a gas fuel supply device 8 for supplying gas fuel to each gas burner unit 5, 5 is installed near the upstream side of the track switching unit.

This gas fuel supply device 8 includes a gas supply pipe 11 for connecting a gas cylinder 10 installed in a gas cylinder storage 9 formed at an appropriate position outside the orbit and each gas burner unit 5, 5 to a gas supply pipe 11. It consists of equipment such as the attached gas cock 12 and gas pressure reducing valve 13. The portion of the gas supply pipe 11 that crosses the track is buried underground, but it is not as troublesome as the duct is buried.

As the gas burner unit 5 described above, a gas burner unit of a known forced-injection combustion system can be used. The gas supply pipe 1 will be described with reference to the example shown in FIG.
The combustion gas sent from 1 through the gas cutoff valve 14 and the gas amount control valve 15 is mixed with the combustion air supplied from the blower 16 and then ejected from the burner nozzle 17, and the mixed gas is the ignition transformer 18. Ignite and burn. Ignition and combustion control (three-position control and proportional control) in the gas burner unit 5 are not particularly illustrated, but signals or wireless signals from known sensors such as a snow sensor (snow sensor), a freezing sensor, and a temperature sensor, Remote control is possible via a telephone line.

FIG. 4 also shows the mounting relationship between the gas burner unit 5 and the radiation tube 6. As the radiation tube 6, for example, a thin stainless steel pipe having a diameter of about 75φ coated with a ceramic paint having high radiation efficiency is used. As described above, since it is about eight sleepers 4 that truly require melting snow at the points, the total length of the radiation tube 6 is about 5 m. The front half 6a of the radiation tube 6 on the gas burner unit 5 side also serves as a combustion tube, and is heated by the combustion flame 19 and combustion exhaust gas in the tube to emit far infrared rays.

The latter half 6b of the radiant tube 6 also serves as a smoke tube through which combustion exhaust gas passes. In the latter half portion 6b where the heating temperature is lowered as compared with the former half portion 6a of the radiant tube 6, FIG.
As shown in FIG. 5, a plurality of small exhaust holes 20 capable of ejecting the exhaust gas are provided at appropriate intervals so that the exhaust gas is exclusively blown to the floor plate 3 on the main rail 1 side. By doing so, the one end side of the floor plate 3 which hits the latter half portion 6b of the radiation tube 6 is effectively heated not only by the far infrared rays but also by the heat quantity of the combustion exhaust gas. If necessary, publicly known heat pipes (not shown) may be provided on both sides of the floor plate 3 to more positively transfer heat to the tongue rail 2 side, but it is also economically friendly. It can be decided as appropriate. If it is desired to shorten the rise time of the device, it is possible to some extent by reducing the thickness of the radiation tube 6.

As shown in FIGS. 2 and 3, the radiation tube 6 is covered with a cover body 7 in the shape of a hook and a bracket, the side facing the main rail 1 being open. This cover body 7
Is a reflection plate 7a and a heat insulating material 7 attached to the outside of the reflection plate 7a.
b and an outer plate 7c for protecting the outside of the heat insulating material 7b. The reflection plate 7a concentrates far infrared rays emitted from the radiation tube 6 to heat the main rail 1 and the floor plate 3. The heat insulating material 7b attached to the outside of the reflector 7a is the cover body 7
Allows the heat dissipation necessary to melt the snow on the top surface,
The thickness should be set to prevent wasteful heat loss. As shown in the figure, the upper surface of the hook-shaped cover body 7 may be inclined so that the snow on the outer plate 7c easily flows down to the outside of the main rail 1.

The radiant tube 6 and the cover body 7 may be a single piece, but if the connection structure is such that they can be appropriately divided into lengths and can be easily assembled, such as a plug-in connection, the gas burner unit 5 and the gas burner unit 5 can be used together in the summer when it is not used. It is convenient to remove and store in.

[0017]

As described above, the far-infrared radiation type snow melting apparatus according to the present invention heats a radiant tube by combustion of gas fuel, and the far-infrared rays generated effectively perform snow melting between the main rail and the tongue rail. However, even if the branching device is quite far away from the front side and the tip side, it is possible to simply install a gas cylinder near each track switching part and easily melt snow over a wide range as in the past. There is an advantage that the equipment cost can be reduced because it is not done. Further, by covering the radiant tube with the cover body having a reflector, the generated far infrared rays are concentratedly and efficiently heated in the vicinity of the main rail and floor plate to prevent heat loss. As a result, the combustion equipment capacity of the present invention is only about 2,000 Kcal / h, and it can be reduced to about 1/10 in terms of equipment cost and operation cost. Moreover, except for the buried gas supply pipe portion, all the equipment can be easily removed and the weight thereof is relatively light, so that the equipment can be easily removed when not in use and it does not hinder the track maintenance work.

Further, although the heating temperature of the radiant tube far from the gas burner unit naturally lowers and the irradiation intensity of far infrared rays from the radiant tube also decreases, the combustion exhaust gas in the radiant tube is fed to the main rail side in the latter half of the radiant tube. By arranging multiple small exhaust holes at appropriate intervals for ejecting toward the floor plate part, the one end side of the floor plate that hits the latter half of the radiant tube is heated not only by far infrared rays but also by waste heat of combustion exhaust gas. Then, the floor plate portion on the side of the tongue rail is heated to a higher temperature faster and by heat conduction. In this way, snow melting between the main rail and the tongue rail, which is located away from the gas burner unit, can be performed relatively quickly.

The shape of the cover body with a reflection plate is a hook-and-loop shape with the side facing the main rail open, and the snow on the upper surface is inclined so that it can easily flow down to the outside of the main rail. It is possible to prevent the melted water and the remaining snow generated by melting from sliding down to the rail side and obstructing the heating.

[Brief description of drawings]

FIG. 1 is a plan view of the far-infrared radiation type snow melting apparatus according to the present invention installed in a track switching section.

FIG. 2 is a cross-sectional view of a radiant tube and a cover body near the gas burner unit section when cut.

FIG. 3 is a cross-sectional view of a radiation tube and a cover body that are far from the gas burner unit section.

FIG. 4 is an explanatory diagram of a gas burner unit section.

[Explanation of symbols]

1 ... This rail, 2 ... Tongue rail, 3 ... Floor board, 4 ... Sleepers, 5 ... Gas burner unit, 6 ... Radiant tube, 7 ... Reflector cover body, 8 ... Gas fuel supply device, 9 ... Gas cylinder storage space, 10 ... Gas cylinder, 11 ... Gas supply pipe, 12 ... Gas cock, 13 ... Gas pressure reducing valve, 14 ... Gas cutoff valve, 15
… Gas amount control valve, 16… Blower, 17… Burner nozzle,
18 ... Ignition transformer, 19 ... Combustion flame, 20 ... Exhaust hole

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[Procedure amendment]

[Submission date] September 19, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction content]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to snow melting between a rail and a tongue rail at a track switching portion (point), and a far infrared ray from a far infrared radiation tube heated by a gas or gas fuel combustion device. The present invention relates to a far-infrared radiation type snow melting device which is performed by waste heat of combustion exhaust gas.

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Sumio Higashi 3-20-6 Kanda, Chiyoda-ku, Tokyo Inside Tomoe Shokai Co., Ltd. (72) Inventor Satoshi Koike 3-20-6 Uchikanda, Chiyoda-ku, Tokyo No. Stock Company Tomoe Shokai

Claims (3)

[Claims] 1. A gas burner unit and a combustion chamber of the gas burner unit communicate with each other on the sleepers outside each of the main rails along the two main rails of the track switching unit, and a pipe is formed by the combustion flame and combustion exhaust gas. A radiation tube whose interior is heated to radiate far infrared rays, and a cover body with a reflector that covers the radiation tube are arranged, and near the upstream side of the track switching section,
A far-infrared radiation type snow melting device, characterized in that a gas fuel supply device for supplying gas fuel is installed in each gas burner unit. 2. A gas burner unit and a combustion chamber of the gas burner unit are connected to each other on the sleepers outside each of the main rails along the two main rails of the track switching unit, and a pipe is formed by the combustion flame and combustion exhaust gas. A radiation tube whose interior is heated to radiate far infrared rays, and a cover body with a reflector that covers the radiation tube are arranged, and near the upstream side of the track switching section,
A gas fuel supply device for supplying gas fuel to each gas burner unit is installed, and a small exhaust hole for ejecting combustion exhaust gas in the radiation pipe toward the floor plate portion on the main rail side is provided in the latter half of the radiation pipe. A far-infrared radiation type snow melting apparatus device, wherein a plurality of holes are provided at appropriate intervals. 3. The cover body with a reflector is in the shape of a hook bracket with the side facing the main rail being open, and the upper surface thereof is inclined so that the snow on the upper surface easily slides down to the outside of the main rail. The far-infrared radiation type snow melting apparatus according to claim 1 or 2, wherein