JPH11152701A - Heat-radiator for thawing snow and snow-thawing device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-radiator for thawing snow in which any puddle arises on a heat sink of the upper face thereof and provide a snow-thawing device equipped with the heat-radiator for thawing snow facilitating the maintenance work. SOLUTION: The snow-thawing device is provided with a grooved plate having grooves 22 composed of a heat sink 21 made of a thin and flat plate at the upper face, and grooves 22 constituted of a plurality of rows of wide and shallow recesses 221 connected to the underface of the heat sink 21 and wide and shallow recesses 222 connecting mutually adjacent recesses of respective rows, and pipe joint bases 27, 28 provided at both ends of a wide and shallow stream pasage formed of continuous wide and shallow grooves of the grooved plate and the heat sink 21. In this case, the heat sink 21 is inclined against the horizontal line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow removal device for melting snow on a railway or other railway track and a radiator for snow removal constituting the snow removal device.

[0002]

2. Description of the Related Art Sprinklers, for example, are widely used as snow removal devices. In this method, sprinklers are attached at intervals of several meters to header pipes arranged on both sides of tracks such as railways, water is sprinkled by this sprinkler to melt snow, and the snowmelt water after watering flows to a drainage pit and is further circulated The water is pumped to the pit, stored in a water storage tank through a dust removal tank and a sedimentation tank, and the water in the water storage tank is sucked up and sprinkled again by a sprinkler. In this way, the water is used in circulation.

[0003] However, in such a snow melting facility using sprinkler water sprinkling, since water is sprinkled directly on the snow-covered portion, the snow melting water may penetrate the soil of the track to soften the ground, and rails, nails and sleepers may be used. Corrosion may occur. Furthermore, since snowmelt water after watering is circulated, dust removal equipment is required.

On the other hand, there is a snow radiator proposed in Japanese Patent Publication No. 6-76681 as a snow removal panel that does not use water spray. The snow radiator for snow removal has a substantially rectangular flat plate shape, a flat heat radiating surface is formed on an upper surface thereof, and a flow path through which hot water flows is formed immediately below the heat radiating surface.
The flow path is formed by welding the upper surface of a grooved thin plate formed by forming a groove in a thin steel plate by pressing or the like on the lower surface of a thin steel radiator plate. This flow path is continuous in a zigzag manner with a wide and shallow trapezoidal groove. A hole is formed at the bottom of each end of the groove, and a hot water supply pipe and a discharge pipe are connected to the hole as a pipe connection port. Since the pipe connection port, the hot water supply pipe and the discharge pipe are provided on the lower surface of the radiator, the radiator serves to maintain the temperature of the space in which the radiator is installed, so that there is no need to worry about exposure to the outside air. .

[0005]

A snow removing device having such a heat dissipating radiator is used for melting snow accumulated on a railway track laid along a passage such as a railway. Before the train runs in the morning, the snow that has accumulated on the track due to nighttime snowfall is removed with a Russell car or the like and piled up on a snow removal device beside the track, and the accumulated snow is poured into a snow radiator for snow removal. This causes melting on the heat sink.

[0006] In this snow removal device, when the track is a double track section,
It will be laid between the up and down tracks, but in that case, it is necessary to have a space between the up and down tracks, for example, a snow removal device with a width of about 1500 mm Becomes

In order to maintain such a snow removal device, it is necessary to lift the snow removal radiator and check the hot water supply / drain piping and the connection piping thereunder. If there is 1500mm, 150K
It weighs from g to 240 kg and cannot be easily lifted by operators.

A radiator plate is attached to the upper surface of the radiator for snow removal and melts snow or accumulated snow on the radiator. When the radiator plate becomes uneven, water accumulates at the location. In some cases, the snow melting effect may be deteriorated, or the heat sink may be corroded. However, the width is 1500 as described above because humans sometimes work on the heat sink
With the presence of mm, it was difficult to prevent the heat sink from having irregularities. Furthermore, since it is common to apply plating or the like to prevent corrosion of the thin steel plate, plating treatment may cause plating distortion and unevenness.

In view of the above, the first object of the present invention is to provide a radiator for snow removal in which puddles do not occur on the upper radiator plate.
Another object of the present invention is to provide a snow removal apparatus having a snow radiator that facilitates maintenance work and has a high snow melting efficiency.

[0010]

SUMMARY OF THE INVENTION A radiator for snow removal according to the present invention comprises a radiator plate having a flat upper surface, a plurality of rows of wide and shallow concave portions joined to the lower surface of the radiator plate, and a plurality of rows of the concave portions. A grooved plate having a groove formed of a wide and shallow concave portion connecting adjacent members, and a pipe connection provided at both ends of a wide and shallow flow path formed by the continuous wide and shallow groove of the grooved plate and the heat sink. Wherein the heat radiating plate is provided with a gradient with respect to the horizontal.

In the present invention, it is desirable that the gradient is set in a range of 1 to 5 ° with respect to the horizontal, more preferably in a range of 1 to 2 °. Further, the snow removal device of the present invention is a device in which snow radiators are arranged along a railway line or the like, and the snow radiators are arranged in a plurality of rows, and a supply pipe and a discharge pipe for a heat medium such as hot water. Is characterized by being connected in parallel to the piping connection port of each snow radiator.
Here, as the radiator for snow removal, it is desirable to use the radiator in which the radiator plate is provided with a gradient with respect to the horizontal as described above.

[0012]

In the radiator for snow removal according to the present invention, the radiating plate made of a thin flat plate on the upper surface has a gradient with respect to the horizontal, 1 to 5 °, preferably 1 to 2 °. Even if the radiator plate is plated or the like and warps or irregularities occur on the surface due to plating distortion, water does not accumulate, and there is no risk of corrosion due to the accumulation of water. At the same time, there is no danger of the snow melting effect being reduced by the accumulated water. In addition, since the water is melted without being accumulated on the radiator because of the slope, the unmelted snow always comes into contact with the radiator plate, and the snow melting effect is enhanced.

It is to be noted that it is not preferable that the numerical value of the above-mentioned gradient is less than 1 ° because water still easily accumulates. On the other hand, when the angle is 5 ° or more, it is not preferable because the gap between the snow radiators for snow removal arranged in parallel is widened, and it becomes slippery when a person gets on. For these reasons, usually 1
It is desirable to set to ~ 2 ゜.

Further, when the radiators are arranged along a passage of a railway or the like, they are arranged in a plurality of rows, so that the width of each radiator can be reduced. In this manner, the width of the snow radiator used in the snow removing device can be reduced, so that the warpage and unevenness of the heat radiating surface that may occur during manufacturing can be reduced accordingly, resulting in the formation of water pools. The risk can be reduced in combination with the upward gradient.

Further, since the width can be reduced,
The weight per snow radiator for snow removal can be reduced accordingly, and the operator can easily handle the radiator during maintenance.

On the other hand, when the heat dissipating radiator for snow removal is divided and made smaller, when a heat medium such as hot water is sequentially passed through the radiator, the temperature of the heat medium gradually decreases and is connected to the rear side. Although the snow-melting effect is inferior to the radiator, in the present invention, the pipe connection ports of the respective radiators for snow-melting are connected in parallel to the supply pipe and the discharge pipe of the heat medium. The temperature of the heat sink can be made substantially uniform.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a snow radiator for snow removal according to the present invention and a snow removal device using the same will be described below with reference to FIGS. FIG. 1 is a cross-sectional view showing a situation in which a snow removing device using the snow radiator of the present invention is laid beside a passage (track) of a railway or the like, and FIG. FIG. 3 is a plan view showing a state in which the units are arranged, and the upper side thereof is a diagram viewed from the lower surface of the radiator so that the inside can be seen. FIG.
FIG. 3 is a lower side view of FIG. 2.

In FIG. 1, snow removal devices 13 and 14 are laid on both sides of two tracks 12 and a center thereof on a subgrade 11. These snow removal devices 13 and 14 are composed of the snow radiator 2 as shown in FIGS. 2 and 3, and the snow removal devices 13 on both sides of the two tracks 12 are compared with those in the center. Since the width is narrow, the right half or left half of the snow radiator 2 shown in FIGS. However,
It may be used in a wide area or in two or three rows as required. On the other hand, since the snow removal device 14 at the center of the two tracks is wide, the snow radiators 2 for snow removal are laid in two rows in parallel as shown in FIGS. However,
Also in this case, three or more rows may be used if necessary in a wide area or when necessary.

Now, the snow removal device 14 between the two tracks 12
The installation width is usually 1300 mm, about 1500 mm wide, and the side of the track is about 1200 mm. When a snow radiator with a width of 1200 mm to 1300 mm and a fixed length of 5500 mm is made as a snow eliminator using SPHC-P material (2.3 mm thick) as a radiator plate, its weight is about 150 kg. /
It becomes a sheet. However, if the width of the radiator is reduced so that the snow radiators 2 are arranged in two rows as shown in FIGS. Becomes Also, as shown in FIG. 2, if the length is half of the fixed length,
It is 1/4 of 150 kg, which makes it easy to handle.

Further, a supply pipe 4 and a discharge pipe 5 for a heat medium such as hot water supplied to the snow radiator 2 are laid below the snow removing devices 13 and 14 as shown in FIG. Therefore, it is necessary to lift the snow radiator 2 at the time of these regular maintenance and abnormalities. At this time, the snow radiator 2 is opened from both sides as shown by the broken line in FIG. Therefore, the lifting weight is relatively light, and the supply pipe 4 and the discharge pipe 5 can be easily maintained.
In the drawing, reference numeral 15 denotes a plumbing pipe, and reference numeral 16 denotes a support member when the heat sink is opened.

Next, the radiator 2 for snow removal according to the present invention will be described with reference to FIGS. Fig. 2 shows the snow radiator 2
It is a top view of what was arranged continuously by sheet. The length of two radiators connected in the length direction is about 5500 mm, which is a fixed size, so that one radiator is about 2750 mm, which is half of that. In addition, the width is 1200 ~ 1500 when two sheets are connected in the width direction.
mm, one sheet is half the width of 600 to 750 mm.

Here, each of the snow radiators 2 has a heat radiating plate 21 made of a thin flat plate on its upper surface, and the upper part of FIG. 2 shows the radiator viewed from below for easier understanding. ing. That is, a flow path 22 through which a heat medium such as hot water flows is formed immediately below the heat radiating plate 21, and a heat insulating material is stacked below the flow path 22 as necessary to prevent heat radiation from the lower side. So that you can do it.

The channel 22 is formed on a lower surface of a heat radiating plate 21 formed by applying a hot dip galvanizing method to a rectangular thin plate made of steel, for example, and a grooved steel plate having a groove formed by pressing a thin rectangular plate, for example, a thin steel plate. Is formed by welding to fix the upper surface. As shown in FIG. 2, the groove 22 of the grooved steel sheet, that is, the concave portion, is composed of a plurality of vertical rows of concave portions 221 and a concave portion 222 that connects each row of the concave portions and the adjacent one.
That is, the recessed portion reciprocates up and down between both ends of the grooved steel plate. The cross-sectional shape of the concave portion is, for example, a trapezoid having a large width and a small depth. A hole penetrating the grooved steel plate is formed at the bottom of both sides of the groove, and a short pipe is fixed to the lower surface of the through hole of the grooved steel sheet by welding, and piping parts such as valves are attached to the short pipe. Are connected to form pipe connection ports 23 to 26.

Referring now to FIG. 3, the radiator for snow removal
It is installed on a panel support plate 31 on a frame 3 to which a supply pipe 4 and a discharge pipe 5 for a heat medium such as hot water are attached,
As shown in FIG. 2, the pipe connection port 23 of the radiator 2 is used here.
And 25 are two outlet pipe connection ports 2 provided in the supply pipe 4.
The pipe connection ports 24 and 26 are connected to two connection ports 27 and 27 provided in the discharge pipe 5 by flexible pipes 29 made of resin or the like. As described above, the supply pipe 4 and the discharge pipe 5 of the frame 3 are provided with the connecting ports of the flexible pipes for each of the snow radiators 2, and the inlet and the outlet are respectively provided by using the flexible pipes or the like. Each is connected in parallel. Reference numeral 6 denotes a return pipe collective pipe for keeping the pressure loss constant.

In the example shown in FIG. 3, a spacer 32 is provided substantially at the center of the panel support plate 31, so that the radiator has a gradient of about 1 to 5 ° with respect to the horizontal, and about 2 ° in this embodiment.
And lower both sides. Therefore, even if the heat sink on the upper surface of the radiator has a small amount of warpage or unevenness, there is no danger that water will accumulate due to such a gradient.

[0026]

EXAMPLE In order to check the snow melting effect of the radiator for snow removal according to the present invention, warm water of about 6 ° C. was passed through the radiator at a rate of 20 liters / minute with 20 to 45 cm of snow on the radiator plate. And conducted a snowmelt experiment. As a result, in this example, the snow on the heat sink almost melted in about one hour, and the water temperature at the outlet was 2-3 ° C.
Met. During that time the snowfall was several cm / hour. Separately, the experiment was carried out in the same manner with warm water of about 3 ° C., and the snow melting effect was also observed in this case. Thus, it was confirmed that the snow radiator of the present invention had a snow melting effect even with warm water of 10 ° C. or less.

[0027]

In the radiator for snow removal according to the present invention, since the radiator plate is inclined with respect to the horizontal, water does not accumulate even if the radiator plate is warped or uneven, and corrosion due to the water pool is prevented. There is no danger of the snow melting effect due to freezing of accumulated water. In addition, since the slope is provided, bridges in snow can be prevented, and the snow melting effect is good.

Also, since the radiators are arranged in a plurality of rows along the passage, the width per unit can be reduced.
The unit weight of the radiator is also reduced, and handling during maintenance is good. Furthermore, since the flow of warm water to the snow radiator is made parallel, the temperatures of all the radiators can be made substantially uniform, and the snow melting effect increases.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a situation in which a snow removal device using a heat radiator for snow removal according to the present invention is laid beside a railway track (track).

FIG. 2 is a plan view showing a state in which four radiators for snow removal of the present invention are arranged, and the upper side thereof is a view of the radiator viewed from below so that the inner structure can be seen.

FIG. 3 is a lower side view of FIG. 2;

[Explanation of symbols]

 11: Subgrade 12: Tracks 13, 14: Snow removal equipment 2: Snow radiator 21: Heat sink 22: Flow path (groove) 23-26: Pipe connection port 27, 28: Connection of supply pipe and discharge pipe Mouth 29: Flexible tube 221: Depressions of plural vertical rows 222: Connection recess 15: Supply / discharge tube 3: Frame 31: Panel support plate 32: Spacer 4: Supply tube 5: Discharge tube

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keino, 2-3-6 Otemachi, Chiyoda-ku, Tokyo New Nippon Steel Corporation (72) Inventor Minoru Yamamoto 2-6-Otemachi, Chiyoda-ku, Tokyo 3 New Nippon Steel Corporation (72) Inventor Hideo Nozaki 2 Daifuku, Kuwana-shi, Mie Hitachi Metals Co., Ltd. Inside Kuwana Plant (72) Inventor Masaaki Takezawa 2 Daifuku, Kuwana-shi, Mie Hitachi Metals, Ltd. Kuwana Plant

Claims (2)

[Claims] 1. A radiator plate having a thin upper surface formed of a flat plate, a plurality of wide and shallow concave portions joined to a lower surface of the radiator plate, and a groove portion formed of a wide and shallow concave portion connecting each row of the concave portions. A grooved plate, and a pipe connection port provided at both ends of a wide and shallow flow path formed by a continuous wide and shallow groove portion of the grooved plate and the radiator plate; and A radiator for snow removal wherein the radiator plate is provided with a gradient with respect to the horizontal. 2. A radiator plate having a thin upper surface formed of a flat plate, a plurality of rows of wide and shallow concave portions joined to a lower surface of the radiator plate, and a groove portion formed of a wide and shallow concave portion connecting each row of the concave portions. A radiator for snow removal having a grooved plate and a pipe connection port provided at both ends of a wide and shallow flow path formed by a continuous wide and shallow groove portion of the grooved plate and the radiator plate is provided along a line. In the snow removal apparatus arranged in a row, the snow radiators are arranged in a plurality of rows, and a pipe connection port of each snow radiator is connected in parallel to a supply pipe and a discharge pipe of a heat medium. Snow removal equipment.