CN213243684U

CN213243684U - Air-out hoop structure of single-bearing generator

Info

Publication number: CN213243684U
Application number: CN202022486128.7U
Authority: CN
Inventors: 赵伟生; 邱万成
Original assignee: WUXI FARADAY ALTERNATORS CO Ltd
Current assignee: WUXI FARADAY ALTERNATORS CO Ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-05-18
Anticipated expiration: 2030-11-02

Abstract

The utility model relates to a single bearing generator air-out staple bolt structure, its characterized in that includes that the semicircular goes up the air-out staple bolt and reaches air-out staple bolt down, it passes through the backup pad by outer lane and the inner circle of coaxial setting to connect and constitutes to go up the air-out staple bolt, the fixed hasp that is provided with in both ends of the inner circle of going up the air-out staple bolt, the fixed hasp that is provided with in both ends of air-out staple bolt down, go up the air-out staple bolt with the air-out staple bolt passes through down go up the hasp and connect down, the inner circle of going up the air-out staple bolt reaches be equipped with the ventilation hole down on the. The utility model discloses simple structure is compact, low in manufacturing cost, and increase heat radiating area improves the radiating effect, guarantees that the generator moves long-term stable reliably to the installation is dismantled conveniently, improves installation and maintenance efficiency.

Description

Air-out hoop structure of single-bearing generator

Technical Field

The utility model relates to a generator especially relates to a single bearing generator air-out staple bolt structure.

Background

When the generator works under the rated working condition, the winding and the iron core of the generator generate a large amount of heat which must be exhausted to the outside of the generator, otherwise the service life of the generator is affected, and the generator is even burnt. As shown in fig. 4, cooling air required by the generator enters the generator through the air inlet cover 1 ', because the rotor 7 ' is provided with the fan 8 ', the fan 8 ' rotates together with the rotor 7 ' when the generator operates, and heat generated by the generator is discharged to the outside of the generator (as shown in the arrow direction in fig. 4) through an air gap and a ventilation duct between parts such as the end cover 3 ', the base 5 ', the stator 6 ', the rotor 7 ', the connecting sleeve 10 ', the air outlet hoop 9 ', and the like by the heat generated by the permanent magnet machine 2 ', the alternating current exciter 4 ', the stator 6 ' and the rotor 7 ' when the generator operates through the difference between the inside and the outside of the generator generated by the difference between the inside.

As shown in fig. 5, 6, and 7, the existing generator air-out hoop 9 ' is formed by connecting an upper air-out hoop 91 ', a lower air-out hoop 92 ', and a connector 93 ' (bolts, nuts, and spring washers), because only the lower air-out hoop 92 ' is provided with vent holes, and the upper air-out hoop 91 ' does not allow opening the vent holes due to the relationship of protection levels, the heat generated by the generator during the operation of the generator can only be blown out through the fan via the lower air-out hoop 92 ', the ventilation effect is not ideal, when the air volume of the generator fan is insufficient, the heat generated by the generator winding and the iron core cannot be taken away completely, the internal temperature of the generator will be higher and higher, the normal operation of the generator will be affected, and even the generator will be burnt. In addition, due to the limitation of the structure, the installation and the maintenance are inconvenient, and the installation and the maintenance efficiency are influenced.

SUMMERY OF THE UTILITY MODEL

The air outlet hoop structure of the single-bearing generator is simple and compact in structure, low in manufacturing cost, capable of increasing the heat dissipation area, improving the heat dissipation effect, capable of guaranteeing the generator to run stably and reliably for a long time, convenient to mount and dismount and capable of improving mounting and maintenance efficiency.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a single bearing generator air-out staple bolt structure, includes that the semicircular goes up the air-out staple bolt and goes up the air-out staple bolt down, go up the air-out staple bolt and pass through the backup pad by outer lane and the inner circle of coaxial setting and connect and constitute, the fixed hasp that is provided with in both ends of the inner circle of going up the air-out staple bolt, the fixed hasp that is provided with in both ends of air-out staple bolt down, go up the air-out staple bolt with the air-out staple bolt passes through down go up the hasp and down the hasp is connected, the inner circle of going up the air-out staple bolt reaches be equipped with.

Further:

the lower hasp is provided with a cotter pin.

The technical effects of the utility model reside in that:

the utility model discloses a single bearing generator air-out staple bolt structure, simple structure is compact, low in manufacturing cost, and increase heat radiating area improves the radiating effect, guarantees that the generator moves long-term stable reliable ground to the installation is dismantled conveniently, improves installation and maintenance efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is an enlarged view of fig. 1 at a.

Fig. 4 is a schematic structural diagram of a single-bearing generator.

Fig. 5 is a schematic structural diagram of an air outlet hoop of a generator in the prior art.

Fig. 6 is a left side view of fig. 5.

Fig. 7 is an enlarged view of fig. 5 at B.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1, 2, 3, the utility model discloses a semicircular go up air-out staple bolt 1 and air-out staple bolt 2 down, go up air-out staple bolt 1 and connect through backup pad 12 by outer lane 11 and the inner circle 13 of coaxial setting and constitute, the fixed hasp 4 that is provided with in both ends of the inner circle 13 of going up air-out staple bolt 1, hasp 3 is fixed to be provided with down at the both ends of air-out staple bolt 2 down, go up air-out staple bolt 1 and air-out staple bolt 2 down through last hasp 4 and down hasp 3 be connected, upward be equipped with the ventilation hole on air-out staple bolt 2's inner circle 13 and the lower air-out staple bolt.

When the generator operates, the rotor rotates at a high speed, the fan has a strong air suction effect, a certain pressure difference is formed between the air inlet and the air outlet, cold air in the surrounding environment enters the generator through the air inlet cover, heat generated by the generator is discharged to the outside of the generator through the air gap and the ventilation duct among the parts such as the end cover, the machine base, the stator, the rotor, the connecting sleeve, the air outlet hoop and the like through the pressure difference between the inside and the outside of the generator and the heat generated by the permanent magnet machine, the alternating current exciter, the stator and the rotor during the operation of the generator. The utility model discloses in, it adopts bilayer structure to go up air-out staple bolt 1, its outer lane 11 is airtight not ventilation type, therefore can play the protective effect the same with current air-out staple bolt, be equipped with many ventilation holes the same with air-out staple bolt 2 down on inner circle 13, under the condition that the protection level that can guarantee the generator does not reduce like this, the clearance between outer lane 11 of going up air-out staple bolt 1 and inner circle 13 plays ventilation cooling's effect, the ventilation cooling area of air-out staple bolt is gone up in the increase, therefore, stronger radiating effect has, reduce the inside temperature rise of generator operation time more effectively, reach good cooling effect, guarantee the long-term reliable operation of generator, extension generator life.

In addition, because the upper hasp 4 and the lower hasp 3 are respectively welded on the upper air-out hoop 1 and the lower air-out hoop 2, the installation of the air-out hoop is simpler, after the upper air-out hoop 1 and the lower air-out hoop 2 are installed in place, the upper hasp 4 and the lower hasp 3 are firmly buckled, in the embodiment, the split pin 5 is arranged on the lower hasp 3, and the split pin 5 is inserted to effectively prevent the upper hasp 4 and the lower hasp 3 from loosening, so that the stable operation of the generator is ensured. When the generator operates for a period of time or the generator breaks down, if the part needs to be checked, the split pin 5 only needs to be pulled out, the upper hasp 4 and the lower hasp 3 are loosened, the whole air outlet hoop can be taken down, the operation is very convenient and fast, and the installation and maintenance efficiency is improved.

The utility model discloses a change last air-out staple bolt structure in the generator air-out staple bolt, the air outlet area of increase generator makes generator air-out heat dissipation condition show and improves, does not worry in the use that the inside temperature rise of generator is too high to cause the motor harmful effects.

Claims

1. The utility model provides a single bearing generator air-out staple bolt structure which characterized in that: the upper air-out hoop is formed by connecting an outer ring and an inner ring which are coaxially arranged through a supporting plate, an upper hasp is fixedly arranged at two ends of the inner ring of the upper air-out hoop, a lower hasp is fixedly arranged at two ends of the lower air-out hoop, the upper air-out hoop and the lower air-out hoop are connected through the upper hasp and the lower hasp, and an air vent is formed in the inner ring of the upper air-out hoop and the lower air-out hoop.

2. The air outlet hoop structure of the single-bearing generator as claimed in claim 1, wherein: the lower hasp is provided with a cotter pin.