CN214330931U

CN214330931U - Centrifugal ventilator for train power supply cabinet

Info

Publication number: CN214330931U
Application number: CN202120649569.6U
Authority: CN
Inventors: 颜建田; 高平; 卢亮
Original assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Current assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-10-01
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to a train accessory technical field discloses a train is centrifugal fan for power supply cabinet, including transition wind channel, air inlet duct, impeller, driving motor and spiral case subassembly, spiral case subassembly and train power supply cabinet internal cooling wind channel meet, and the impeller includes preceding rim plate, wheel hub and back rim plate, and the whole fan-shaped structure that is of spiral case subassembly, and the oral area that spiral case subassembly and transformer meet is rectangle open structure. The volute component is designed into a fan-shaped structure, the bent side plates and the fan panel form a diffusion cavity, and on the basis of meeting the requirement that the opening part is suitable for integral installation, the cavity can reduce the speed of airflow at an air outlet of the impeller in the flowing process, increase the gas pressure, reduce the internal resistance and improve the pneumatic efficiency of the fan; the air inlet duct is embedded into the front wheel disc of the impeller, the driving motor part is positioned in the inclined space of the rear wheel disc of the impeller, the transition air duct extends to cover part of the front wheel disc of the impeller, and the structural designs effectively shorten the axial space size of the centrifugal ventilator to enable the centrifugal ventilator to be compact in structure.

Description

Centrifugal ventilator for train power supply cabinet

Technical Field

The utility model relates to a train accessory technical field specifically, relates to a train power supply centrifugal fan for cabinet.

Background

The train power supply cabinet is a power supply device for supplying power to a passenger train on a passenger locomotive, and is a key component for ensuring the normal work of the passenger train; in order to prevent the transformer, the reactor and the converter module from being damaged due to overheating and ensure the normal work of the train power supply cabinet, a matched ventilator is required to perform forced ventilation and cooling on the converter module and the transformer winding in the train power supply cabinet.

However, the space size of the train power supply cabinet is unchangeable, and the outlet of the ventilator needs to be matched with the size of the cooling air duct in the cabinet body, so that the volute structure and the axial space of the ventilator are strictly limited, and the general spiral centrifugal blower in the current market cannot be installed with the train power supply cabinet in a matched mode to meet the integral use requirement.

Disclosure of Invention

The utility model provides a technical problem lie in overcoming prior art's defect, provide a train power supply centrifugal fan for cabinet that pneumatic efficiency is high, compact structure.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a train is centrifugal fan for power supply cabinet, includes air inlet duct, impeller, driving motor and spiral case subassembly, and the spiral case subassembly meets with the interior transformer of power supply cabinet, and the impeller includes preceding rim plate, wheel hub and back rim plate, and the whole fan-shaped structure that is of spiral case subassembly, and the oral area that the spiral case subassembly meets with cooling air duct is rectangle open structure.

Further, the spiral case subassembly still includes two fan panels that distribute respectively at driving motor axial both ends and all be connected with the type curb plate of bending perpendicularly including the type curb plate of bending that arranges around driving motor periphery.

Furthermore, the ratio of the length to the width of the mouth part ranges from 2.7 to 2.85.

Further, the air inlet duct is partially embedded in the front wheel disc of the impeller.

Furthermore, the air inlet duct is embedded in the front wheel disc part, and a gap of 1-3 mm is formed between the front wheel disc part and the front wheel disc.

Furthermore, the air conditioner also comprises a transition air duct which covers the periphery of the air inlet duct, and the transition air duct is connected with the volute component.

Still further, the front wheel disc part of the impeller is covered by the transition air duct.

Still further, the tip that the spiral case subassembly was kept away from in transition wind channel is equipped with the screen panel.

Furthermore, the rear wheel disc of the impeller is obliquely arranged, and the oblique direction of the rear wheel disc inclines to the side of the driving motor in the axial space along the airflow outflow direction.

Furthermore, the inclination angle of the rear wheel disc is 38-42 degrees.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the volute component is designed into a fan-shaped structure, the bent side plates and the fan panel form a diffusion cavity, and on the basis of meeting the requirement that the opening part is suitable for integral installation, the cavity can reduce the speed of airflow at an air outlet of the impeller in the flowing process, increase the gas pressure, reduce the internal resistance and improve the pneumatic efficiency of the fan;

2) the air inlet duct is embedded into the front wheel disc of the impeller, the driving motor part is positioned in the inclined space of the rear wheel disc of the impeller, the transition air duct extends to cover part of the front wheel disc of the impeller, and the structural designs effectively shorten the axial space size of the centrifugal ventilator, so that the centrifugal ventilator is compact in structure and can be well adapted to the installation occasions of a train power supply cabinet.

Drawings

Fig. 1 is a perspective view of a centrifugal ventilator for a train power supply cabinet according to embodiment 1;

fig. 2 is a plan view of the centrifugal ventilator for the train power supply cabinet according to embodiment 1;

fig. 3 is a front view (including a partial sectional view) of the centrifugal ventilator for the train power supply cabinet according to embodiment 1;

fig. 4 is a cross-sectional view of the impeller described in example 1.

Detailed Description

The invention will be further described with reference to specific embodiments, wherein the drawings are designed solely for the purpose of illustration and not as a definition of the limits of the patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

The centrifugal ventilator for the train power supply cabinet shown in fig. 1 comprises a transition air duct 1, an air inlet duct 2, an impeller 3, a driving motor 4 and a volute component 5, wherein the transition air duct 1 is connected with the volute component 5 and covers the periphery of the air inlet duct 2, a mesh enclosure 6 is arranged at the end part, far away from the volute component 5, of the transition air duct 1, one end, provided with the mesh enclosure 6, of the transition air duct 1 is the ventilator airflow inlet side, and the mesh enclosure 6, the transition air duct 1 and the air inlet duct 2 form an air inlet structure of the ventilator to suck air from the outside; the driving motor 4 is arranged in the volute component 5, and the impeller 3 is directly connected with the shaft extension of the driving motor 4 and rotates together with the rotating shaft of the driving motor; the impeller 3 comprises a front wheel disc 31, a hub 32, a rear wheel disc 33 and blades 34, the rear wheel disc 33 is fixedly connected with the hub 32 through a fastener, and the front wheel disc 31, the blades 34 and the rear wheel disc 33 are fixedly connected through welding; the volute component 5 is connected with the cooling air duct in the power supply cabinet, and in order to enable the structure of the volute component to meet the requirement of the overall spatial layout of the power supply cabinet, the spiral structural design of the traditional volute is abandoned in the embodiment, and the volute component 5 is integrally designed into a fan-shaped structure, as shown in fig. 2.

Specifically, the volute component 5 comprises bent side plates 51 arranged around the periphery of the driving motor 4, and further comprises two fan panels 52 which are respectively distributed at two axial ends of the driving motor and are vertically connected with the bent side plates 51, the end part of the driving motor far away from the impeller is fixedly connected with the fan panels at the corresponding positions of the volute component, the bent side plates 51 and the two fan panels 52 form a cavity structure, an opening part 53 of the volute component 5 connected with the transformer is of a rectangular opening structure, namely an air outlet of the cavity structure is square, the cavity structure is a fan-shaped diffusion cavity at the moment, the ratio range of the length and the width of the opening part 53 is 2.7-2.85, the diffusion angle range of the fan-shaped diffusion cavity is 2 × a, and the value range of a is 31 ° < a < 32 °; the fan-shaped diffusion cavity designed by the embodiment can reduce the speed of the airflow at the air outlet of the impeller of the ventilator in the flowing process, increase the gas pressure, reduce the internal resistance and improve the pneumatic efficiency of the ventilator.

Among the traditional centrifugal fan, the air inlet duct is installed inside the ventilation blower spiral case, this embodiment ventilation blower has carried out novel fan-shaped structural design back to the spiral case subassembly, and then install air inlet duct 2 in transition wind channel 1, as shown in fig. 3, the preceding rim plate 31 of rim plate 31 is inserted or imbeds to air inlet duct 2 part, form the part at the axial direction and overlap, effectively shorten ventilation blower axial space size, satisfy the requirement of train power supply cabinet to ventilation blower size structure, the design has 1 ~ 3 mm's clearance between the part of rim plate 31 before the air inlet duct 2 imbeds and the preceding rim plate, overlap the partial contactless gaseous water conservancy diversion transition structure of constituteing.

The front wheel disc 31 of the impeller is also partially covered by the transition air duct 1, namely, the front wheel disc of the impeller is partially arranged in the transition air duct, so that the axial space of the transition air duct is fully utilized, and the purpose of effectively shortening the axial space size of the ventilator is further achieved.

In addition, the rear wheel disc 33 of the impeller is arranged obliquely, the oblique direction of the rear wheel disc is oblique to the side of the driving motor 4 in the axial space along the airflow outflow direction, the oblique design of the rear wheel disc can provide a piece of concave space, the concave space can be embedded and installed by the driving motor 4, as shown in fig. 3, the oblique angle of the rear wheel disc is shown as B in fig. 4, and the oblique angle B is 38-42 degrees. The inclined arrangement of the rear wheel disc 33 also helps to reduce the axial space size of the ventilator on the premise of ensuring that the width of the outlet of the impeller meets the requirement of the pneumatic performance of the ventilator.

The above-mentioned air inlet duct and the nested, the drive motor of ventilation blower and the nested, transition wind channel of back rim plate extend to the design that can cover partial front wheel dish, have fully guaranteed the effect that this application ventilation blower axial space size is little and compact structure.

The working process of the ventilator of the embodiment is as follows: when the air-saving device is used, the driving motor runs to drive the impeller to do work on air, so that the air sucked from the mesh enclosure is pressurized and accelerated through the volute component; the mouth of the volute component of the ventilator is connected with the cooling air duct of the row supply cabinet through a sealing ring, and the air after pressurization and acceleration can overcome the flow resistance generated by each heating component in the row supply cabinet, and can be cooled and dissipated, so that the purpose of dissipating heat and cooling the system is achieved.

It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a train is centrifugal fan for power supply cabinet, includes air inlet duct, impeller, driving motor and spiral case subassembly, and the spiral case subassembly meets with power supply cabinet internal cooling wind channel, and the impeller includes preceding rim plate, wheel hub and back rim plate, and its characterized in that, the whole fan-shaped structure that is of spiral case subassembly, the oral area that the spiral case subassembly meets with the transformer is rectangle open structure.

2. The centrifugal ventilator for the train power supply cabinet according to claim 1, wherein the volute component comprises a bent side plate arranged around the periphery of the driving motor, and further comprises two fan panels respectively distributed at two axial ends of the driving motor and vertically connected with the bent side plate.

3. The centrifugal ventilator for the train power supply cabinet according to claim 1 or 2, wherein the ratio of the length to the width of the mouth portion ranges from 2.7 to 2.85.

4. The centrifugal ventilator for a train power supply cabinet according to claim 1, wherein the air inlet duct is partially embedded in a front wheel disk of the impeller.

5. The centrifugal ventilator for the train power supply cabinet according to claim 4, wherein an air inlet duct is embedded in a gap of 1-3 mm between the front wheel disc part and the front wheel disc.

6. The centrifugal ventilator for the train power supply cabinet according to claim 1 or 4, further comprising a transition air duct covering the periphery of the air inlet duct, wherein the transition air duct is connected with the volute assembly.

7. The centrifugal ventilator for a train power supply cabinet according to claim 6, wherein a front wheel disk portion of the impeller is covered with a transition duct.

8. The centrifugal ventilator for the train power supply cabinet according to claim 6, wherein a mesh enclosure is provided at an end of the transition air duct away from the volute component.

9. The centrifugal ventilator for a train power supply cabinet according to claim 1, wherein a rear wheel disk of the impeller is disposed obliquely, and an oblique direction of the rear wheel disk is inclined toward the driving motor side in the axial space along the air outflow direction.

10. The centrifugal ventilator for train power supply cabinets of claim 7, wherein the inclination angle of the rear wheel disc is 38 ° to 42 °.