CN213899332U

CN213899332U - Cooling and ventilating structure of main helium fan motor and main helium fan motor

Info

Publication number: CN213899332U
Application number: CN202022670384.1U
Authority: CN
Inventors: 邹德宝; 姜海艳; 邰丽娟; 张蛟; 王立名; 王洪斌; 常颜芹; 董振兴
Original assignee: Jiamusi Electric Machine Co Ltd
Current assignee: Jiamusi Electric Machine Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-08-06
Anticipated expiration: 2030-11-18

Abstract

A cooling and ventilating structure of a main helium fan motor and the main helium fan motor belong to the technical field of the main helium fan motor and aim to solve the problems that an electromagnetic bearing on the main helium fan motor is complex in structure and can generate a large amount of heat in the using process, so that the main helium fan cannot effectively and quickly dissipate heat. The utility model relates to a cooling and ventilating structure of a helium circulator motor, which comprises a rotating shaft, a first electromagnetic bearing, a second electromagnetic bearing, a fan and a shell; the shell is internally and fixedly provided with a first electromagnetic bearing and a second electromagnetic bearing, a cavity is formed among the first electromagnetic bearing, the second electromagnetic bearing and the shell, the rotating shaft is rotatably arranged on the first electromagnetic bearing and the second electromagnetic bearing and is arranged in a clearance with the first electromagnetic bearing and the second electromagnetic bearing, and two ends of the rotating shaft extend out of the first electromagnetic bearing and the second electromagnetic bearing. The utility model discloses the internal cooling circulation and the external cooling circulation that wind channel and outer wind channel realized electromagnetic bearing in setting up make the inside abundant heat dissipation of helium fan motor.

Description

Cooling and ventilating structure of main helium fan motor and main helium fan motor

Technical Field

The utility model relates to a helium fan motor, concretely relates to helium fan motor cooling ventilation structure and helium fan motor of owner.

Background

The main helium fan has the function of driving helium in a primary loop of the high-temperature gas cooled reactor to flow through a reactor core of the reactor, and provides helium with sufficient flow to pass through a primary loop system to take away heat generated by the reactor core of the reactor under the working conditions of normal startup, power operation, shutdown and the like of the reactor. Electromagnetic bearing is one of the important part on the main helium fan, be used for supporting the pivot, bear all loads under the various operating condition of main helium fan, electromagnetic bearing inner structure is complicated, can produce a large amount of heats at the during operation, need in time discharge in the casing of main helium fan motor, the heat dissipation is not good to make the heat accumulation can cause electromagnetic bearing to damage, cause main helium fan motor to shut down the operation, and the reactor need work for a long time usually, if shut down and need many associated equipment all to shut down the operation, consequently how to make the inside heat dissipation that can be effectively quick of main helium fan motor be the technical problem who needs to solve urgently.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the electromagnetism bearing structure on the helium fan motor complicacy, can produce a large amount of heats in the use, cause the radiating problem that helium fan can not be effective quick, and provide a helium fan motor cooling ventilation structure and helium fan motor of domination.

The utility model discloses a solve the technical scheme that above-mentioned technical problem took and be:

the first scheme is as follows: a cooling and ventilating structure of a main helium fan motor comprises a rotating shaft, a first electromagnetic bearing, a second electromagnetic bearing, a fan and a shell;

the shell is internally and fixedly provided with a first electromagnetic bearing and a second electromagnetic bearing, a cavity is formed between the first electromagnetic bearing and the shell, the rotating shaft is rotatably arranged on the first electromagnetic bearing and the second electromagnetic bearing and is arranged in a clearance with the first electromagnetic bearing and the second electromagnetic bearing, two ends of the rotating shaft extend out of the first electromagnetic bearing and the second electromagnetic bearing, the shell is provided with an air inlet and an air outlet, the air outlet is positioned at the cavity, the air inlet is positioned at the tail end of the rotating shaft, a fan fixedly connected with the rotating shaft is arranged at the air inlet, the first electromagnetic bearing and the second electromagnetic bearing respectively form an inner air duct a and an inner air duct b with the clearance between the rotating shaft in sequence, an outer air duct is formed among the first electromagnetic bearing, the second electromagnetic bearing and the shell, and the inner air duct a and the inner air duct b are respectively communicated with the outer air duct.

Preferably, a first air hole is processed at one end of the rotating shaft, which is provided with the fan, a second air hole is processed on the surface of the outer circle of the shaft extension side of the rotating shaft, the first air hole is communicated with the second air hole, and the second air hole is communicated with the cavity.

Preferably, a thrust disc used for jacking the rotating shaft through a first electromagnetic bearing is arranged on the rotating shaft, the thrust disc is fixedly connected with the rotating shaft, a first air outlet communicated with the outside of the shell is formed in the first electromagnetic bearing, and the first air outlet corresponds to the thrust disc in position and is communicated with the inner air duct a.

Preferably, a channel for communicating the cavity with the second air hole is arranged on the shell.

Scheme II: a main helium fan motor comprises a cooling and ventilating structure of the main helium fan motor in the first scheme.

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

the utility model discloses an inside cooling heat dissipation of electromagnetic bearing is realized to fan inside wind channel an and interior wind channel b air inlet, and on electromagnetic bearing's shell was transmitted through heat-conducting mode to the produced heat of electromagnetic bearing, the outer wind channel of rethread took the heat out, made the inside abundant heat dissipation of its helium fan motor.

Drawings

Fig. 1 is a schematic view of the present invention, in which the arrow direction is the wind direction;

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.

Example 1: the embodiment is described below with reference to fig. 1, and the embodiment relates to a cooling and ventilating structure of a helium circulator motor, which includes a rotating shaft 1, a first electromagnetic bearing 2, a second electromagnetic bearing 3, a fan 4, and a housing 5;

a first electromagnetic bearing 2 and a second electromagnetic bearing 3 are fixedly arranged in the shell 5, a cavity 53 is formed between the first electromagnetic bearing 2, the second electromagnetic bearing 3 and the shell 5, the rotating shaft 1 is rotatably arranged on the first electromagnetic bearing 2 and the second electromagnetic bearing 3, the electromagnetic bearing device is arranged in a clearance with the first electromagnetic bearing 2 and the second electromagnetic bearing 3, two ends of the rotating shaft extend out of the first electromagnetic bearing 2 and the second electromagnetic bearing 3, the shell 5 is provided with an air inlet 51 and an air outlet 52, the air outlet 52 is positioned at the cavity 53, the air inlet 51 is positioned at the tail end of the rotating shaft 1, the air inlet 51 is provided with a fan 4 fixedly connected with the rotating shaft 1, the first electromagnetic bearing 2 and the second electromagnetic bearing 3 respectively and the clearance between the rotating shaft 1 sequentially form an inner air duct a and an inner air duct b, an outer air duct is formed among the first electromagnetic bearing 2, the second electromagnetic bearing 3 and the shell 5, and the inner air duct a and the inner air duct b are respectively communicated with the outer air duct.

Optionally, a first air hole 11 is formed in one end, on which the fan 4 is disposed, of the rotating shaft 1, a second air hole 12 is formed in the surface of the outer circle of the shaft extension side of the rotating shaft 1, the first air hole 11 is communicated with the second air hole 12, and the second air hole 12 is communicated with the cavity 53.

In this embodiment, the rotating shaft 1 drives the fan 4 to rotate, and a part of the air is brought into the cavity 53 of the inner air duct a and the outer air duct of the first electromagnetic bearing 2, and the air is discharged from the air outlet 53 after being discharged from the first electromagnetic bearing 2, so as to realize cooling and heat dissipation of the first electromagnetic bearing 2; the other part of the wind enters from the first wind hole 11 and is discharged from the second wind hole 12, enters the second electromagnetic bearing 3, is discharged into the cavity 53 through the second electromagnetic bearing 3, and is finally discharged from the wind outlet 52.

For making the heat dissipation of first electromagnetic bearing 2 more abundant, be equipped with the thrust disc 6 that is used for through first electromagnetic bearing 2 with 1 jack-up of pivot on the pivot 1, thrust disc 6 and pivot 1 fixed connection are equipped with on the first electromagnetic bearing 2 with the outside first air outlet 52 that communicates of casing 5, first air outlet 52 is corresponding with the position of thrust disc 6 to communicate with each other with interior wind channel a. The thrust disc 6 is driven by the rotating shaft 1 to discharge the air introduced by the fan 4 from the first air outlet 52, and meanwhile, a part of the air entering the cavity 53 enters the first electromagnetic bearing 2 and is discharged from the first air outlet 52, so that the inside of the first electromagnetic bearing 2 is sufficiently cooled.

First electromagnetic bearing 2 includes bearing housing, radial stator and two axial stators, is equipped with radial stator and two axial stators in the housing, and two axial stators are the clearance setting, and radial stator is the clearance setting with

pivot

1, and 1 surface in pivot is equipped with the iron core to set up with radial stator relatively, thrust disc sets up between two axial stators, and the electromagnetic thrust who produces through the stator jacks up thrust disc. The structure of the first electromagnetic bearing 2 belongs to the prior art and is not described in detail herein.

The second electromagnetic bearing 3 comprises a bearing shell a and a radial stator, the radial stator is arranged in the bearing shell a, an iron core a is arranged on the outer circumferential surface of the rotating shaft 1, and the iron core a corresponds to the radial stator. The second electromagnetic bearing 3 belongs to the prior art and is not described in detail herein.

Optionally, a channel H for communicating the cavity 53 with the second air hole 12 is formed in the housing 5, and the channel H is provided, so that part of the air forms external circulation air outside the rotating shaft 1, and the other part of the air enters the second electromagnetic bearing 3 to form internal heat dissipation.

Example 2: the helium circulator motor of this embodiment includes the cooling and ventilation structure of the helium circulator motor described in embodiment 1.

Although the present invention has been described in detail with reference to certain specific embodiments, it will be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A cooling and ventilating structure of a main helium fan motor is characterized by comprising a rotating shaft (1), a first electromagnetic bearing (2), a second electromagnetic bearing (3), a fan (4) and a shell (5);

a first electromagnetic bearing (2) and a second electromagnetic bearing (3) are fixedly arranged in a shell (5), a cavity (53) is formed between the first electromagnetic bearing (2), the second electromagnetic bearing (3) and the shell (5), a rotating shaft (1) is rotatably arranged on the first electromagnetic bearing (2) and the second electromagnetic bearing (3) and is arranged in a clearance with the first electromagnetic bearing (2) and the second electromagnetic bearing (3), two ends of the rotating shaft (1) extend out from the first electromagnetic bearing (2) and the second electromagnetic bearing (3), an air inlet (51) and an air outlet (52) are arranged on the shell (5), the air outlet (52) is arranged at the cavity (53), the air inlet (51) is arranged at the tail end of the rotating shaft (1), a fan (4) fixedly connected with the rotating shaft (1) is arranged at the air inlet (51), an air duct a and an inner air duct b are sequentially formed by the first electromagnetic bearing (2) and the second electromagnetic bearing (3) and the clearance between the rotating shaft (1), an outer air duct is formed among the first electromagnetic bearing (2), the second electromagnetic bearing (3) and the shell (5), and the inner air duct a and the inner air duct b are respectively communicated with the outer air duct.

2. The cooling and ventilating structure of the helium circulator motor as claimed in claim 1, wherein a first air hole (11) is formed at one end of the rotating shaft (1) on which the fan (4) is arranged, a second air hole (12) is formed on the outer circumferential surface of the shaft extension side of the rotating shaft (1), the first air hole (11) is communicated with the second air hole (12), and the second air hole (12) is communicated with the cavity (53).

3. The cooling and ventilating structure of the helium circulator motor as claimed in claim 1 or 2, wherein the rotating shaft (1) is provided with a thrust disc (6) for jacking up the rotating shaft (1) through the first electromagnetic bearing (2), the thrust disc (6) is fixedly connected with the rotating shaft (1), the first electromagnetic bearing (2) is provided with a first air outlet (52) communicated with the outside of the housing (5), and the first air outlet (52) corresponds to the thrust disc (6) in position and is communicated with the inner air duct a.

4. The cooling ventilation structure of the helium circulator motor as claimed in claim 2, characterized in that the housing (5) is provided with a passage (H) for communicating the cavity (53) with the second air vent (12).

5. A prime helium fan motor comprising a prime helium fan motor cooling ventilation arrangement as claimed in any one of claims 1 to 4.