JPH0367321B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a so-called forced air cooling type resistance device that forcibly cools a resistor mounted on an electric locomotive by introducing outside air from the outside. The present invention relates to a forced air cooling type resistance device for electric locomotives with an improved arrangement of devices and a method of operating the same.

[Prior art]

In general, forced air cooling type resistance devices for electric locomotives cool multiple resistors mounted on the car body.
Each resistor is equipped with a blower to introduce outside air and cool it.

The maximum capacity of each resistor mounted on the car body is designed based on the amount of current applied during emergency braking of an electric locomotive, for example, on a downhill section, and the capacity of each blower is also designed according to the maximum heat generation of the resistor. I am designing.

By the way, the amount of current applied to the resistor during starting and braking of an electric locomotive on a flat road section is smaller than the amount of current applied during an emergency, and even more so, the amount of current applied to the resistor when running at a constant speed on a flat road section is less than the above-mentioned amount of current when running at a constant speed on a flat road section. This is extremely low compared to emergencies.

However, even though most of the operation is steady operation on flat ground, all the resistors are energized and all the blowers attached to them are driven. As a result, the resistor, whose temperature had not risen significantly, was forced to cool down, which was contrary to energy conservation.

[Purpose of the invention]

The present invention has been made in view of the above points, and its purpose is to increase or decrease the number of resistors and blowers used in accordance with the operating conditions of the electric locomotive to save energy. An object of the present invention is to provide a wind-cooled resistance device.

[Summary of the invention]

In order to achieve the above object, the present invention separates a plurality of resistors into a plurality of resistors for power running/braking operation and a plurality of resistors exclusively for braking operation, and attaches a blower to each resistor. During steady operation, including startup, constant speed, and normal braking in a running section, the dual-purpose resistor and its fan are used for operation, and during downhill sections or emergency braking operation, the dual-purpose resistor and the dedicated blower are used. It was designed to operate in combination with a resistor.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. A resistor installation space 2 along the longitudinal direction of the vehicle body is formed in one section of the vehicle body 1 to distinguish it from the installation locations of other onboard equipment. In this resistor installation space 2, a plurality of resistors are installed in a line along the longitudinal direction of the vehicle body. There are two types of resistors installed here: dual-purpose resistors 3A to 3C for power running and braking operation, and dedicated resistors 4A and 4B for braking operation, and these are dual-purpose resistor group 3 and dedicated resistor group 4. It is arranged in two blocks. Blowers 5 and 6 are installed below each resistor in accordance with the amount of heat generated by each resistor. On the other hand, an intake port 7 is formed in the side wall of the vehicle body 2, and an outside air introduction path 8 is formed from the intake port 7 to the blowers 5 and 6. The intake port 7 has a length substantially equal to the length of the resistor installation space 2, and is formed over substantially the entire height of the side wall of the vehicle body 1. The outside air introduction path 8 has a height and length corresponding to the intake port 7, and includes an introduction path 8A formed between the resistor installation space 2, and the air introduction path 8A and each of the blowers 5, 6 and a control passage 8B communicating with the lower part thereof,
These introduction path 8A and connection path 8B are formed so as to be common to the blowers 5 and 6 of each resistor. Furthermore, each resistor 3A to 3C and 4A, 4B
Exhaust outlet paths 9A and 9B are connected to the upper part of the vehicle body 1, respectively, and open to the outside of the roof of the vehicle body 1. Note that a filter 10 is provided inside the intake port 7.

In the above configuration, each resistor 3A to 3
When cooling C, 4A, and 4B, all blowers 5,
6 should be driven. The blowers 5 and 6 are of a push-in type with respect to the resistors, and outside air is sucked in from the intake port 7 through the filter 10 as shown by the arrow in FIG. ~
3C, 4A, and 4B, and the exhaust outlet path 9
The air flows to the outside from A and 9B, and each of the resistors is cooled by this flow of outside air.

With the configuration as explained above, the dual-purpose resistors 3A to 3C are
Operate by energizing only the resistors 4A and 4B, and not energizing the dedicated resistors 4A and 4B. Therefore, only the dual-purpose resistors 3A to 3C need to be cooled, and therefore only the blower 5 attached to each of them needs to be driven, resulting in energy savings compared to the conventional system in which all blowers are driven.

On the other hand, in the case of braking operation in a downhill traveling section or in an emergency, in addition to the dual-purpose resistors 3A to 3C, the dedicated resistors 4A and 4B are also energized at the same time to perform operation using all the resistors. For this reason, in order to cool all the resistors, all the blowers 5 and 6 attached to each
is driven.

In this way, according to this embodiment, unlike the conventional system in which all resistors are energized and all blowers are driven regardless of the operating conditions, the number of resistors and the blowers attached to them are changed depending on the operating conditions. Since it is used in an increased or decreased manner, for example, during steady operation on a flat road section, it is only necessary to drive the dual-purpose resistors 3A to 3C and their blower 5, resulting in an energy saving effect.
In addition, each blower 5, 6 only needs to have a capacity that corresponds to the heat generation amount of the corresponding resistor, and compared to the conventional case where the capacity was set to match the maximum heat generation amount during emergency braking, for example, the blower 5 Can be made smaller and smaller in capacity. In other words, the reduction in size and capacity of the blower 5 means that the cooling capacity of the resistor can be increased by that much, and the blower 5 with the same capacity can be increased accordingly.
If this is used, the resistors 3A to 3C can be made smaller.

In addition, in this embodiment, as mentioned above, it is not necessary to keep all the blowers running all the time while the electric locomotive is operating, so the time average value of the amount of outside air sucked through the filter 10 on the side wall of the car body is small. Therefore, compared to when all the blowers are driven, the amount of dust and rainwater that enters with the outside air is reduced. As a result, not only the interval for cleaning the inside of the outside air introduction path 8 and the cleaning of the resistor can be extended, but also the clogging of the filter 10 is naturally reduced, and the interval for maintenance and inspection can be extended.

In the above embodiment, the dual-purpose resistors 3A to 3C and the dedicated resistors 4A and 4B are grouped together and divided into two adjacent blocks, but when the number of each resistor increases, the number of blocks is divided into two. There is no problem in increasing the number by more than one.

Next, FIGS. 4 and 5 show another embodiment according to the present invention, in which each resistor 3A
3C, 4A, and 4B are arranged in a line in the longitudinal direction of the vehicle body in the resistor installation space 2, which is the same as in the previous embodiment. The features of this embodiment are that the dual-purpose resistors 3A to 3C and the dedicated resistor 4A,
4B are installed alternately one by one.

In this way, since the two types of resistors are arranged alternately along the longitudinal direction of the vehicle body, only the dual-purpose resistors 3A to 3C are energized during steady operation on flat roads, and only the blower 5 attached to the resistors is energized. is driven.

In this case, since the dual-purpose resistors 3A to 3C are distributed and arranged over the entire length of the filter 10, outside air can be evenly introduced from almost the entire area of the filter 10, unlike the embodiment described above. As a result, the passage speed of the outside air passing through the filter 10 can be kept low, so the pressure loss when introducing the outside air is also reduced, and the blower 5 can be used efficiently after all.

Furthermore, according to the embodiments shown in FIGS. 4 and 5, in the same way as the outside air is introduced from the filter 10, the exhaust gas introduction passages 9A and 9B are alternately installed for exhaust, so that
Exhaust air is dispersed instead of being concentrated in one place. However, it is possible to avoid damage caused by hot wind to humans and livestock along the railway lines due to the concentration of high-temperature exhaust wind.

It goes without saying that the embodiments shown in FIGS. 4 and 5 can achieve the effects obtained in the embodiments described above.

Incidentally, each of the above embodiments has a structure in which an intake port for introducing outside air from outside the vehicle body is provided on the side wall of the vehicle body, and the exhaust port is exhausted onto the roof of the vehicle body. It may be formed at any position as long as it does not interfere with the formation of the outside air flow path consisting of the resistor, the exhaust outlet path, and the installation of other mounted equipment.

Further, in each of the above embodiments, the resistors are installed in a line along the longitudinal direction of the vehicle body, but the installation method is not particularly limited to this method, and it is possible to form an outside air passage, etc. as described above. It may be installed arbitrarily as long as it does not interfere with the on-board equipment.

In short, the present invention separates the resistor into a plurality of resistors for both power running and braking operation and a plurality of resistors exclusively for braking operation, and each resistor is equipped with a blower according to the amount of heat generated. At times, the dual-purpose resistor may be energized for operation, and for downhill sections and emergency braking operations, the dual-purpose resistor and the dedicated resistor may be energized for operation.

〔Effect of the invention〕

As explained above, in the present invention, the required number of resistors are energized according to the operating conditions of the electric locomotive, and only the blower attached to the energized resistor is driven, so that all the resistors are energized. It is possible to eliminate unnecessary operation such as driving all the blowers by
Therefore, it is possible to obtain a forced air cooling type resistance device for electric locomotives which has a large energy saving effect.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing an electric locomotive equipped with a forced air cooling type resistance device according to an embodiment of the present invention;
The figure is a cross-sectional plan view of the same, Figure 3 is a longitudinal cross-sectional side view of the same, and Figure 4 is a vertical cross-sectional view of the same.
The figure is a cross-sectional plan view showing an electric locomotive equipped with a forced air cooling type resistance device according to another embodiment of the present invention, and FIG. 5 is a longitudinal cross-sectional side view of the electric locomotive. 1...Vehicle body, 2...Resistor installation space, 3A~3
C...Resistor for power running/braking operation, 4A, 4B
...Special resistor for braking operation, 5,6...Blower,
7...Intake port, 8...Outside air introduction path, 9A, 9B...
...Exhaust outlet path, 10...Filter.

Claims (1)

[Scope of Claims] 1. A plurality of resistors mounted on a vehicle body and used during power running and braking operation; an outside air introduction path common to all the resistors formed within the vehicle body and guiding outside air to each of the resistors; an exhaust outlet path formed within the vehicle body for guiding exhaust gas from each of the resistors to the outside of the vehicle body; and an exhaust outlet path installed near each of the resistors to conduct outside air from the outside air introduction path via the resistor. In a forced air cooling type resistance device equipped with an air blower that allows air to flow through the road, the plurality of resistors are separated into a plurality of resistors for powering/braking operation and a plurality of resistors dedicated to braking operation, respectively. A forced air cooling type resistance device for electric locomotives characterized by a resistor and a blower attached. 2. In claim 1, the plurality of dual-purpose resistors and the plurality of dedicated resistors are divided into at least two blocks, a dual-purpose resistor group and a dedicated resistor group, and these blocks are arranged in a planar manner. A forced air cooling type resistance device for an electric locomotive, characterized in that the devices are arranged adjacent to each other. 3. The forced electric locomotive according to claim 1, characterized in that the plurality of dual-purpose resistors and the plurality of dedicated resistors are arranged so that different types of resistors are adjacent to each other in a plane. Air-cooled resistance device. 4. A forced air cooling type resistance device for an electric locomotive according to claim 3, wherein the resistors are arranged alternately along the longitudinal direction of the vehicle body. 5 The plurality of resistors mounted on the vehicle body and used during power running and braking motion are separated into a plurality of resistors for both power running and braking operation and a plurality of resistors exclusively for braking operation, and each resistor is connected to a blower. It energizes each dual-purpose resistor and drives the blower attached to it during steady operation, including startup and normal braking on a flat road section, and also during braking operation on a downhill section or in an emergency. A method for operating a forced air cooling type resistance device for an electric locomotive, characterized in that all the blowers are driven by energizing each of the dual-purpose resistors and each of the dedicated resistors.