JPS6320961B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for eliminating snowfall airflow onto an elevated track.

For orbital snow removal in cold regions, attempts have been made to apply hot water snow removal and heated snow melting technology as mechanical snow removal methods. However, these are per 1 km of track length.
Since it requires 500Kw of electric power and heating equipment of 4 to 8 Gcal/hr class, it is a very heavy burden both in terms of energy and equipment. On the other hand, high-speed orbits in cold regions are a social demand, as seen with the Shinkansen, and measures to remove snow from the tracks are an issue that needs to be resolved.

The present invention provides a snow airflow elimination device that can effectively cope with elevated railways in cold regions, especially in regions with heavy snowfall, with a much lower burden than the conventional methods in terms of energy and equipment. I will provide a.

To explain specifically according to the embodiment of the drawings, this device for removing snow airflow to the elevated track includes blower pipes A and B provided on both sides along tracks 1 and 2.
and C (for track 1, air pipes A on both sides)
and B, and C and B) on both sides of orbit 2,
Air outlet 3 that blows out a jet from each of the air pipes A, B, and C toward an obliquely upward direction on the track side.
, a blower 4 for sending high-pressure air to each of the air pipes A, B, and C; a wind direction sensor 5 for sensing the prevailing wind direction near the orbit; A blower control device 6 that selectively sends air from the blower 4 to the air outlets 3 of the blower pipes (A and C in the illustrated example) on the windward side with respect to the orbit;
It consists of 7, 8, and 9.

The blow pipes A, B, and C have a finite length depending on the capacity of the blower 4, are divided into independent units of, for example, 30 to 100 m, and are connected to the blow pipes of other devices of the present invention. The illustration shows an example in which the blower pipes A and B are provided at both edges of an elevated structure, and the blower pipe C is provided in the center of a double-track track. It is set up. Each air outlet 3 has an angle that blows out an air flow diagonally upward on the track, and the air outlet 3 provided in each of the air pipes A, B, and C is connected to each air pipe. When air is blown, a jet stream is blown out all at once from all the air outlets provided in the blast pipe. The blow pipe C in the center along the railway line is provided to further enhance the effect of the present invention. There may be two air pipes each having an outlet, or one air pipe may be cut in the middle to form two independent air passages. In the case of the illustrated example, a switching valve 9 is attached to the air outlet 3 so that a jet stream can be selectively blown out from one blast pipe C on either side of the two tracks 1 and 2.

The blower 4 is installed under the elevated structure in a place where there is as little snow as possible, and the blower pipes A, B, and C of the unit configuration are
High-pressure air is sent through air ducts 10, 11, 12, and 13. A plurality of these blowers 4 may be arranged according to the blower pipes A, B, and C, and the number of blowers 4 may be controlled.
In any case, the total capacity is determined by the length of the blast pipe, but if the length of the blast pipe is approximately 35 m, a fan power (F-BKw) of about 150 Kw can be used.

The present invention attempts to eliminate the snowfall airflow onto the orbit without going against the wind direction, and since the dynamic pressure of falling snow is very small compared to the air dynamic pressure, airflow control is used. Snowfall is also controlled at the same time, and the air flow is controlled along the direction of the prevailing wind direction. On elevated tracks, wind is present during snowfall, and the wind speed and direction change over time. By detecting the prevailing wind direction, it is possible to cope with this change over time. In the illustrated embodiment, this control device includes a wind direction sensor 5, a signal transmitter 6, control dampers 7, 8, 9, etc. installed in the wind duct or blow pipe. The wind direction sensor 5 and the signal transmitter 6 detect the prevailing wind direction during a predetermined period of time, convert it into an electrical signal, and control the damper 7 so that the air is blown diagonally upward in a direction along the prevailing wind direction. , 8 and 9 are given control signals. In this case, in order to reduce the reaction to changes in wind direction and avoid frequent switching operations, it is preferable that the signal transmitter 6 has a built-in totalizer. Although the direction of the airflow is shown in the figure, it is important not to go against the direction of the wind in order to achieve a state where the airflow from the air outlet reaches the elevated edge. Even if there is turbulence in the outflow air when the wind speed is high, since the lateral airflow dominates, snow accumulation on the orbit can be eliminated in the case of snowfall, and when the wind speed is low, the outflow airflow is turbulent. Since there is little amount of snow, it is possible to effectively eliminate snowfall airflow into orbit.

In addition, if each air pipe is provided with a nozzle for locally blowing a jet onto orbits 1 and 2,
It is also possible to remove snow that inevitably accumulates on orbit, and is highly effective in reducing powder snowfall in cold regions. In this way, even when the wind direction changes, the present invention does not go against the wind direction by performing selective airflow control in which air is always blown diagonally upward on the leeward side from the air outlet on the windward side with respect to the trajectory. Since it is designed to eliminate snowfall on the track, it does not require heating means such as conventional snow melting and snow removal methods, nor does it require water spray or various related equipment, and it produces approximately It is possible to carry out the project using only about 200 km of power. Conventional equipment is track 1
It will be understood how energy-saving and equipment-saving the apparatus of the present invention is compared to the conventional system which required a power of about 500 Km per Km and heating equipment of 4 to 8 Gcal/hr class.

[Brief explanation of the drawing]

FIG. 1 is an equipment layout system diagram showing an embodiment of the apparatus of the present invention. 1, 2... Orbit, 3... Air outlet, 4... Blower,
5... Wind direction sensor, 6... Signal transmitter, 7, 8, 9...
Control damper, A, B, C...Blow pipe.

Claims (1)

[Claims] 1. Air ducts installed on both sides along the track, air outlets that blow out jets from each duct diagonally upward on the track side, and high-pressure air sent to each duct. A blower for air conditioning,
It consists of a wind direction sensor to detect the prevailing wind direction near the orbit, and a blower control device that selectively sends air from the blower to the air pipe on the windward side of the orbit in response to the signal from the wind direction sensor. A snowfall airflow removal device for an elevated track is configured to blow air diagonally upward on the leeward side from the air outlet on the windward side of the track even if the wind direction changes.