CN111431319A

CN111431319A - Closed generator

Info

Publication number: CN111431319A
Application number: CN202010274063.1A
Authority: CN
Inventors: 李寒晖; 陈敬东; 万钊; 杨杰
Original assignee: Kangfu Technology Co ltd
Current assignee: Kangfu Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-07-17

Abstract

The invention discloses a closed generator, which comprises a motor body and a motor shell for protecting the motor body, wherein the motor body comprises a rotating shaft, an exciter, a rotor and a stator, the rotating shaft is fixedly arranged at two ends of the motor shell through end covers and extends to the outer side of the motor shell, the end covers comprise a front end cover and a rear end cover, the exciter is fixedly arranged at the position, close to the front end cover, of the rotating shaft, the rotor is fixedly arranged at the position, close to the rear end cover, of the rotating shaft and rotates synchronously with the rotating shaft, the stator is arranged on the motor shell and is positioned right above the rotor, blades are fixedly arranged at two sides of the rotor, an outer fan of a machine shell is fixedly arranged on the rotating shaft positioned at the outer side of the rear end cover, a rear cover is arranged at. The generator firstly cancels the fan in the shell of the motor, so that the space of the left front end cover originally used for accommodating the fan can be cancelled, the axial space of the front end cover is completely cancelled, and the volume of the generator is greatly reduced.

Description

Closed generator

Technical Field

The invention relates to the technical field of generators, in particular to a closed generator.

Background

Along with the implementation of 'silk road on sea', the demand of ship equipment in China is increasing day by day, the requirement on a ship generator is also stricter, the protection level of the generator of the conventional ship diesel generator set is low and can only reach IP23, water and dust are easy to enter the generator, heat is not dissipated, the insulation of the generator is reduced, a coil is aged, the service life of the motor is shortened, and particularly under a severe operating environment, moisture can greatly damage parts such as the winding insulation of the generator, and the reliability and the service life of the generator are seriously influenced.

Disclosure of Invention

In order to solve the technical problems, the invention provides the following technical scheme:

The invention provides a closed generator which comprises a motor body and a motor shell for protecting the motor body, wherein the motor body comprises a rotating shaft, an exciter, a rotor and a stator, the rotating shaft is fixedly arranged at two ends of the motor shell through end covers and extends to the outer side of the motor shell, the end covers comprise a front end cover and a rear end cover, the exciter is fixedly arranged at the position, close to the front end cover, of the rotating shaft, the rotor is fixedly arranged at the position, close to the rear end cover, of the rotating shaft and rotates synchronously with the rotating shaft, the stator is arranged on the motor shell and is positioned right above the rotor, blades are fixedly arranged at two sides of the rotor, a casing outer fan is fixedly arranged on the rotating shaft positioned at the outer side of the rear end cover, a rear cover is arranged at the right side of the motor shell and fixedly connected with the rear end cover, and.

Preferably, in order to avoid abrasion between the rotating shaft and the end cover, the rotating shaft is rotatably connected with the front end cover and the rear end cover through bearings.

Preferably, the motor shell and the surface of the rear cover are both provided with heat conduction layers, and the heat conduction layers are heat conduction polyester coating layers.

Preferably, the side wall of the motor shell is provided with two groups of brackets, and the brackets are obliquely arranged on the motor shell.

Preferably, the lower end of the support is provided with a damping layer, and the damping layer is made of rubber.

Preferably, the cooling fins are arranged on the motor shell at intervals and uniformly, the cross section of the motor shell is of a circular and/or rectangular structure, and the cross sections of the front end cover and the rear end cover are of circular and/or rectangular structures.

Preferably, a handle is arranged at the upper end of the motor shell, and a threaded structure is arranged on the handle.

Preferably, the outer surfaces of the front end cover and the rear cover are both provided with protective layers.

The invention has the beneficial effects

(1) The generator firstly cancels the fan in the motor shell, so that the space of the front end cover originally used for accommodating the fan can be cancelled, the axial space of the front end cover is completely cancelled, and the volume of the generator is greatly reduced.

(2) According to the invention, the blade structures are assembled at the two ends of the rotor, the blade structures rotate along with the rotating shaft to stir the internal heat, one part of the heat is driven to the wall of the motor shell and is transmitted to the external cooling medium through the radiating fins on the motor shell, the other part of the heat is dissipated to the rear cover through the gap between the rotating shaft and the rear end and is blown to the wall of the rear cover through the fan outside the machine shell, the heat conduction layer on the rear cover and the motor shell further transmits the internal heat to the outside, the integral heat dissipation performance of the motor is effectively improved, the integral safety is improved, and the service life is prolonged.

(3) Because the exciter is arranged in the front, the stator and the rotor of the generator are deviated to the rear end of the motor, close to the rear end cover and close to the fan outside the machine shell, and the fan outside the machine shell is utilized to the maximum extent, so that the heat of radiating fins blowing the shell of the motor is ensured, and the heat generated by the stator and the rotor is reduced as much as possible.

Drawings

FIG. 1 is a front view of the upper half of the structure of the present invention.

Fig. 2 is a side view of the structure of the present invention.

Description of reference numerals: 1-rotating shaft, 2-exciter, 3-rotor, 4-stator, 5-front end cover, 6-rear end cover, 7-blade, 8-outer fan of machine shell, 9-motor shell, 10-rear cover, 11-radiating fin, 12-bracket and 13-handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-2, the present invention provides a closed generator, including a motor body and a motor housing 9 for protecting the motor body, the cross section of the motor housing 9 is a circular structure, the motor body includes a rotating shaft 1, an exciter 2, a rotor 3, and a stator 4, the rotating shaft 1 is fixedly disposed at two ends of the motor housing 9 through end covers and extends to the outside of the motor housing 9, the end covers include a front end cover 5 and a rear end cover 6, in order to avoid abrasion of the rotating shaft 1 and the end covers, the rotating shaft 1 is rotatably connected with the front end cover 5 and the rear end cover 6 through bearings, and the cross sections of the front end cover 5 and the rear end cover 6 are circular structures; the exciter 2 is fixedly arranged at a position, close to the front end cover 5, of the rotating shaft 1, the rotor 3 is fixedly arranged at a position, close to the rear end cover 6, of the rotating shaft 1 and rotates synchronously with the rotating shaft 1, the stator 4 is arranged on the motor shell 9 and is positioned right above the rotor 3, blades 7 are fixedly arranged on two sides of the rotor 3, an outer casing fan 8 is fixedly arranged on the rotating shaft 1 at the outer side of the rear end cover 6, a rear cover 10 is arranged on the right side of the motor shell 9, the rear cover 10 is fixedly connected with the rear end cover 6, cooling fins 11 are arranged on the motor shell 9, and the cooling fins 11 are arranged on the motor shell 9 at intervals and uniformly;

The generator is different from the traditional installation positions of internal parts of a conventional generator, the generator firstly cancels the fan in the motor shell 9, so that the space of the front end cover 5 originally used for accommodating the fan can be cancelled, the axial space of the front end cover 5 is completely cancelled, and the size of the generator is greatly reduced under the original function of sealing the interior of the generator; the traditional fan is cancelled, a device is needed to be designed to achieve the function of stirring heat by the traditional fan, then the blade 7 structures are assembled at two ends of the rotor 3, the blade 7 structures rotate along with the rotating shaft 1, the heat inside is stirred, one part of the heat is driven to the wall of the motor shell 9 and is transmitted to the external cooling medium through the radiating fins 11 on the motor shell 9, the other part of the heat is dispersed into the rear cover 10 through the gap between the rotating shaft 1 and the rear end, and is blown to the wall of the rear cover 10 through the fan 8 outside the motor shell, the heat inside is further transmitted to the outside through the heat conducting layer on the rear cover 10 and the motor shell 9, the integral heat radiation performance of the motor is effectively improved, the integral safety is improved, and the service life is prolonged; in addition, because the exciter 2 is arranged in front, the stator 4 and the rotor 3 of the generator are deviated to the rear end of the motor, are close to the rear end cover 6, and are close to the outer fan 8 of the machine shell, so that the outer fan 8 of the machine shell is utilized to the maximum extent, the heat of the radiating fins 11 of the outer shell 9 of the motor is ensured to be blown, and the heat generated by the stator 4 and the rotor 3 is reduced as much as possible;

The heat conduction layers are arranged on the surfaces of the motor shell 9 and the rear cover 10 and are heat conduction polyester coating layers, the heat conduction layers are arranged on the surfaces of the motor shell 9 and the rear cover 10, the heat conduction layers can further improve the heat dissipation performance of the whole body of the motor shell 9 and the rear cover 10, when the motor works, the function of auxiliary heat dissipation can be further played, the overheating phenomenon of the motor is avoided, the fault rate of the motor is reduced, and the safety performance of the motor in use is further improved;

The side wall of the motor shell 9 is provided with two groups of brackets 12, the brackets 12 are obliquely arranged on the motor shell 9, and the stability of the overall operation of the motor is facilitated by arranging the brackets 12; in order to facilitate the integral movement of the motor, the upper end of the motor shell is provided with a handle 13, an operator can move the motor through the handle 13, the flexibility of the motor is improved, the handle 13 is provided with a thread structure, the thread structure is convenient for increasing the hand friction force between the handle 13 and the operator, and the motor is prevented from being damaged by slipping in the carrying process; the front end housing 5 with the surface of back shroud 10 all is provided with the inoxidizing coating, the inoxidizing coating adopts the rubber material, through setting up the inoxidizing coating, prevents that the outside from effectively improving crashworthiness and security to the direct striking of front end housing 5, back shroud 10.

Example 2

As shown in fig. 1-2, the present embodiment is further optimized based on embodiment 1, specifically, a shock absorbing layer is disposed at a lower end of the bracket 12, and the shock absorbing layer is made of rubber.

This embodiment is through setting up the buffer layer at frame 12 lower extreme, and the absorbing effect when effectively playing the motor operation prevents that lasting vibrations from causing the damage to its inside part during the motor operation, effectively improves the utility life of motor.

Principle of operation

The invention is a closed generator, each part is distributed as shown in fig. 1-2, when using, the rotary shaft 1 is rotatably connected with the front end cover 5 and the rear end cover 6 through the bearing, the exciter 2, the rotor 3 and the stator 4 are fixedly arranged on the rotary shaft 1 and the motor shell 9 in sequence, the rotary shaft 1 outside the rear end cover 6 is fixedly provided with the outer fan 8 of the casing, and the right side of the motor shell 9 is fixedly provided with the rear cover 10; the generator is different from the traditional installation positions of internal parts of a conventional generator, the generator firstly cancels the fan in the motor shell 9, so that the space originally used for accommodating the fan of the left front end cover 5 can be cancelled, the axial space of the front end cover 5 is completely cancelled, and the volume of the generator is greatly reduced; the traditional fan is cancelled, a device is needed to be designed to achieve the function of stirring heat by the traditional fan, then the blade 7 structures are assembled at two ends of the rotor 3, the blade 7 structures rotate along with the rotating shaft 1, the heat inside is stirred, one part of the heat is driven to the wall of the motor shell 9 and is transmitted to the external cooling medium through the radiating fins 11 on the motor shell 9, the other part of the heat is dispersed into the rear cover 10 through the gap between the rotating shaft 1 and the rear end, and is blown to the wall of the rear cover 10 through the fan 8 outside the motor shell, the heat inside is further transmitted to the outside through the heat conducting layer on the rear cover 10 and the motor shell 9, the integral heat radiation performance of the motor is effectively improved, the integral safety is improved, and the service life is prolonged; in addition, because exciter 2 is leading-in for generator stator 4 and rotor 3 are to the motor rear end, press close to rear end housing 6, and are close to the fan 8 distance outside the casing, and maximize utilization fan 8 outside the casing, both guaranteed to blow the heat of fin 11 of motor casing 9, also reduced the heat that stator 4 and rotor 3 produced as far as possible.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A closed generator is characterized by comprising a motor body and a motor shell (9) for protecting the motor body, wherein the motor body comprises a rotating shaft (1), an exciter (2), a rotor (3) and a stator (4), the rotating shaft (1) is fixedly arranged at two ends of the motor shell (9) through end covers and extends to the outer side of the motor shell (9), each end cover comprises a front end cover (5) and a rear end cover (6), the exciter (2) is fixedly arranged at the position, close to the front end cover (5), of the rotating shaft (1), the rotor (3) is fixedly arranged at the position, close to the rear end cover (6), of the rotating shaft (1) and rotates synchronously with the rotating shaft (1), the stator (4) is arranged on the motor shell (9) and is positioned right above the rotor (3), blades (7) are fixedly arranged at two sides of the rotor (3), and an outer fan (8) of a machine shell is fixedly arranged on the rotating shaft (1) positioned at the outer side of the rear end cover, the right side of motor housing (9) is provided with rear cover (10), rear cover (10) with rear end cover (6) fixed connection, be provided with fin (11) on motor housing (9).

2. A closed generator according to claim 1, characterized in that, in order to avoid abrasion of the rotating shaft (1) and the end covers, the rotating shaft (1) is rotatably connected with the front end cover (5) and the rear end cover (6) through bearings.

3. A closed generator according to claim 1, characterized in that the motor housing (9) and the rear cover (10) are provided with heat conducting layers on their surfaces, said heat conducting layers being layers of heat conducting polyester paint.

4. A closed generator according to claim 1, characterized in that brackets (12) are arranged on the side walls of the motor housing (9), said brackets (12) being arranged in two groups, said brackets (12) being arranged obliquely on the motor housing (9).

5. A closed generator according to claim 4, characterized in that the lower end of the bracket (12) is provided with a shock absorbing layer made of rubber.

6. The closed generator as claimed in claim 1, characterized in that the cooling fins (11) are arranged on the motor housing (9) at intervals and uniformly, the cross section of the motor housing (9) is of a circular and/or rectangular structure, and the cross sections of the front end cover (5) and the rear end cover (6) are of a circular and/or rectangular structure.

7. A closed generator according to claim 3, characterized in that the motor housing (9) is provided at its upper end with a handle (13), said handle (13) being provided with a screw thread.

8. A closed generator according to claim 1, characterised in that the outer surfaces of the front end cover (5) and the rear cover (10) are provided with a protective coating.