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Centrifugal fan set used for cooling high speed train traction motor

A technology for high-speed EMUs and traction motors, which can be applied to machines/engines, liquid fuel engines, components of pumping devices for elastic fluids, etc., and can solve problems such as low efficiency, heavy components, and insufficient boosting capacity. Achieve the effect of high efficiency, simple and compact structure, and high reliability

Inactive Publication Date: 2013-10-09
CRRC DALIAN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mainly aiming at the defects of low efficiency, insufficient pressurization capacity and bulky components of the existing ventilation units, a set of ventilation units with high efficiency, high reliability, simple and compact structure and low noise is provided to meet the needs of the traction motors of high-speed EMUs. cooling needs

Method used

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  • Centrifugal fan set used for cooling high speed train traction motor
  • Centrifugal fan set used for cooling high speed train traction motor

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Embodiment Construction

[0023] Such as figure 1 , figure 2 As shown, a centrifugal fan unit for cooling the traction motor of a high-speed EMU includes a collector 1, a flange 2, a fan impeller 3, a volute 6, a shaft disc 7 and a motor 8. The air intake channel of the collector 1 is a zoom-type air intake channel, and the air intake channel of the collector 1 is composed of a gas rapid acceleration section and a gas buffer section, and the gas rapid acceleration section and the gas buffer section are formed An arc-shaped transition structure, the gas buffer section is connected with the conical arc-shaped front disc of the fan impeller 3 in an arc transition, and the arc-axial ratio of the gas rapid acceleration section and the gas buffer section is 1 :8-1:5. There is a gap between the gas buffer section of the collector 1 and the fan impeller 3 , and the gap is 1%-3% of the inlet diameter of the tail end of the gas buffer section of the collector 1 . The fan impeller 3 is composed of a cone-shap...

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Abstract

The invention discloses a centrifugal fan set used for cooling a high speed train traction motor. The centrifugal fan set comprises a collector, flanges, a fan impeller, a volute, a shaft disc and an electromotor and is characterized in that the collector is fixed on one side of an end plate of the volute through the flanges, the volute is fixed on the electromotor, the fan impeller which is arranged in the volute is fixed with the shaft disc, an installation hole which is matched with a motor shaft of the electromotor is formed in the shaft disc, and the shaft disc is fixed with the electromotor. According to the centrifugal fan set, on the premise that the appearance size of the product is not changed, the difficult problems that the static pressure is not enough and the weight excesses limitation are solved, the required technical requirement which needs to be met when the high speed train traction motor runs is met, performance and reliability of the traction motor are improved, and the centrifugal fan set has the advantages of being high in efficiency, high in reliability, simple and compact in structure, low in noise and the like.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a centrifugal fan unit for cooling a traction motor of a high-speed EMU. Background technique [0002] Each EMU of a certain type of high-speed EMU carries two traction motors respectively. The traction motors are distributed at both ends of the interlayer between the bottom of the EMU and the floor of the passenger compartment, and are located in the middle of the train. Only two traction motors are left. Install the cooling fan unit in very narrow space on the side. Based on this, in order to meet the cooling needs of the traction motor, the matching fan unit must have the characteristics of small size, strong ventilation capacity and high static pressure. [0003] At present, the design technology in the existing technology requires one traction motor to be matched with two ventilating units, and the rated flow rate of each ventilating unit under the standard state is 0.5m 3 / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/60
CPCF04D25/06F04D29/4226
Inventor 李廷金李瑜李俊
Owner CRRC DALIAN INST CO LTD
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