JPS5967157A - Ventilating cooling device for diesel electric locomotive - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a ventilation cooling system for a diesel electric locomotive, and in particular, a dynamic brake resistor is disposed inside a radiator of a diesel engine, and a common fan is used to cool both of them. Related to ventilation cooling.

[Prior art]

In diesel-electric locomotives, ventilation cooling is performed by fans to cool the radiator of the diesel engine and the dynamic brake resistor of the electric locomotive.

This type of ventilation cooling device that has been commonly used is the first
It is as shown in FIG.

In the figure, 1 is a vehicle body, 2 is a diesel engine, 3 is a generator, and 4 is a radiator for cooling cooling water heated by the diesel engine 2, which is attached to the side of the vehicle body 1. 5 is a fan for ventilation and cooling of the radiator 4;
6 is a drive mechanism for rotating the fan 5; 7 is a dynamic brake resistor; 8 is a fan for ventilation cooling of the resistor 7; 9 is a drive morph of the fan 8; 10 is a cooling air intake port; 11 is the same discharge port. In this way, in the conventional system, the radiator 4 and the dynamic brake resistor 7 were placed in different locations, and each was cooled using its own fan, which took up space and increased the length of the locomotive. Along with this, there was a drawback that the mold became heavier to open.

To solve this problem (7), as shown in FIG. A device in which cooling is performed using a fan 12VC has been proposed. However, in such a device, the radiator 4 is placed horizontally, so there is a risk that the radiator 4 will be damaged by vertical vibrations during driving, and the radiator 4 is Since the radiator is installed on the upper side, the length of the radiator becomes longer than when it is installed on both sides, which is a disadvantage in terms of shortening the vehicle body length.

In addition, as shown in FIGS. 4 and 5, the radiator 4f
It has also been proposed that the dynamic brake resistor 7 be placed on both sides of the X-vehicle body 1, and the dynamic brake resistor 7 be placed on the top surface of the car body 1, and that both be ventilated and cooled by a common fan 12. However, in such a device, rainwater splashes on the element of the dynamic brake resistor 7, which becomes hot, which not only shortens its lifespan (but also requires a waterproof cover 14 or the like to be placed over the connection 13 between the resistor 7 and the electric wire). Since it has to be covered with a waterproof structure, it has the disadvantage that the structure is complicated.

Furthermore, although not shown, it has been proposed that a radiator is placed on the side of the vehicle body, a dynamic brake resistor is placed inside the radiator at an appropriate interval, and both are ventilated and cooled by a common fan. There is. Although such a device does not have the above-mentioned drawbacks, it does have the following problems. In other words, since the radiator and the dynamic brake resistor are cooled together by ventilation, a larger landscape is required than when cooling only the radiator or only the resistor. The radiator There is a problem in that the radiator core fins vibrate, especially in areas where the wind speed is high, resulting in fin vibration noise. Furthermore, since the resistor is installed in a limited space inside the radiator, there is a drawback that it is extremely difficult to remove and install the resistor during maintenance and inspection.

[Purpose of the invention]

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, prevent the generation of vibration noise of the radiator core fin even when a dynamic brake resistor is placed inside the radiator, and An object of the present invention is to provide a ventilation cooling system for a diesel-electric locomotive that allows easy maintenance and inspection of resistors.

[Summary of the invention]

To achieve this object, the present invention provides a diesel engine with a radiator for a diesel engine arranged on the side of a vehicle body, a dynamic brake resistor arranged inside the radiator, and a fan for sucking cooling air through the radiator and resistor. The ventilation cooling device for an electric locomotive is characterized in that the resistor is divided into a plurality of units, and each unit is distributed and arranged within the ventilation surface of the radiator.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 6 to 9.

In this embodiment, the radiator 4 of the diesel engine is distributed on both sides of the vehicle body 10. Each radiator 4 has a plurality of (
In the illustrated example, it is composed of three radiator units 4a, and each radiator support frame 4a is supported by a radiator support frame 15 fixed to the vehicle body 1. A ventilation gap G is provided between each radiator support frame 4a.

Inside the radiator 4, a resistor 7 for dynamic braking of an electric locomotive is arranged with an appropriate gap (.This resistor 7 consists of a plurality of resistor units (two in the illustrated example)). It is divided into 7a, each resistor unit) 7
The elements a are arranged so as to fit within the ventilation surface of the radiator 40 and are distributed within the ventilation surface. For this reason, a gap J is provided between each resistor unit 7a. Each resistor unit) 7a is supported via an insulator 17 by a resistor support member 16 fixed to the vehicle body 1vc, and an insulator cover 18 is provided on each insulator J7. The element 19 of the resistor unit 7a is arranged horizontally.

A ventilation fan 12 is arranged at the upper center of the vehicle body 1,
Cooling air is sucked in through the radiator 4 and dynamic brake resistor 7 on the side of the vehicle, and the heated cooling air is discharged from the top of the vehicle.

The fan 12 is driven by a diesel engine (not shown) via a propeller shaft 20, a gear box 21, and a vertical shaft 22. Of course, this may also be done by a drive motor.

Partition walls 23 are straddled before and after the section where the radiator 4 and the resistor 7 are arranged, and one partition wall 23 has a ventilation hole 24 that takes in cooling air to lower the temperature of the gear box 21. It is set at ℃iro.

With the above configuration, since each unit 7a of the dynamic brake resistor 7 is distributed and arranged within the ventilation surface of the radiator 40, the wind speed within the ventilation surface of the radiator 40 becomes relatively uniform, and the wind speed is Since there are no locally high places, it is possible to prevent the generation of vibration noise from the radial core fin. Further, in the above embodiment, a gap G is provided between the radiator units 43, and each resistor unit 7a is arranged to face this gap G, so that the radiator unit 4a passing through this gap G, The cooling air that is not heated by the resistor unit 7a flows directly onto the resistor unit 7a. The cooling efficiency of a is good (
Become. Furthermore, since the dynamic brake resistor 7 is divided into multiple units, each resistor unit) 7
a is small and lightweight, making it extremely easy to remove and install in a narrow space during maintenance and inspection, and the span length of the element 19 is short (as a result, the element sag due to thermal expansion is reduced, and Element short-circuit accidents are also eliminated.

In the above embodiment, a case has been described in which the dynamic brake resistor is divided into two parts on one side, but it can also be divided into three or more parts.

〔Effect of the invention〕

As explained above, according to the present invention, the dynamic brake resistor is divided into a plurality of units and distributed within the ventilation surface of the radiator, so that the speed of the cooling air passing through the radiator is equalized, and the wind speed By eliminating the extremely high part of the radiator core fin, it is possible to prevent the generation of vibration noise from the radiator core fin. Furthermore, since the dynamic brake resistor is divided into multiple parts, each unit is smaller and lighter, making it easier to remove and install during maintenance and inspection, and also has the advantage of preventing short-circuit accidents caused by sagging elements. .

[Brief explanation of the drawing]

Figures 1 and 2 are a cutaway plan view and side view of a conventional diesel-electric locomotive, respectively, and Figure 3 is a cross-sectional view of an example of a conventionally proposed ventilation cooling system for a diesel-electric locomotive. , FIG. 4 and FIG. 5 are longitudinal and cross-sectional views respectively showing other examples of conventionally proposed ventilation cooling devices for diesel-electric locomotives, and FIG. 6 is a ventilation cooling system according to an embodiment of the present invention. A plan view of the cooling device, Figure 7 is A in Figure 6.
8 is a view taken along arrow B-El in FIG. 6, and FIG. 9 is an enlarged sectional view of portion C in FIG. 8. 1...Vehicle body, 4...Radiator, 4a
...Radiator unit, 7...Dynamic brake resistor, 7a...Resistor unit, 12...Fan, G, H, J...・
··gap. Fig. 1 1 4 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 1ri Fig. 8 Fig. 2 Fig. 9

Claims (1)

[Claims] 1. A diesel engine radiator is placed on the side of the vehicle body, and a dynamic brake resistor is placed inside the radiator,
In the device provided with a fan that sucks cooling air through the radiator and the resistor, the resistor is divided into a plurality of units, and each unit is distributed and arranged within the ventilation surface of the radiator. Ventilation cooling system for diesel electric locomotives. 2. The diesel engine according to claim 1, wherein each unit of the resistor is arranged to face a gap provided between a plurality of radiator units constituting the radiator. Ventilation cooling system for electric locomotives.