CN209896867U

CN209896867U - Temperature monitoring automatic protection type generator

Info

Publication number: CN209896867U
Application number: CN201921110973.5U
Authority: CN
Inventors: 刘顺; 彭飞飞; 王雄; 徐翔
Original assignee: Fu Fu Polytron Technologies Inc
Current assignee: Fu Fu Polytron Technologies Inc
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-01-03
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses a temperature monitoring automatic protection type generator, which comprises a frame, a rotating shaft, a stator, a rotor, a front end cover, a rear end cover and two temperature sensors, wherein the rotating shaft is rotatably arranged on the frame; the rotor comprises a rotor core with a winding, an exciter rotor core with a winding, a fan, a coupler, a bearing and a coupler sheet, wherein the coupler, the fan, the rotor core with the winding, the exciter rotor core with the winding and the bearing are sequentially arranged on a rotating shaft and rotate along with the rotating shaft, and the two temperature sensors are respectively arranged on a front end cover and a rear end cover. The utility model discloses being equipped with temperature sensor, sending shutdown signal when the temperature superelevation setting value makes the unit stop the function protection generator, the industry that the long-term steady operation of specially adapted needs the generator is used.

Description

Temperature monitoring automatic protection type generator

Technical Field

The utility model relates to a generator technical field, concretely relates to temperature monitoring automatic protection formula generator.

Background

The generator as a long-term operation machine not only guarantees the reliability of the generator in the aspect of electromagnetism, but also has extremely important protection of a rotating part, the main reason of the protection is that secondary damage caused by the rotating part is extremely large, and particularly for a single-support generator, the development of a generator capable of timely protecting the rotating part when the rotating part is damaged is imperative.

Disclosure of Invention

The utility model discloses the problem that will solve is: the utility model provides a temperature monitoring automatic protection formula generator, is equipped with temperature sensor, sends the shut down signal when the temperature superelevation setting value and makes the unit stop the operation protection generator, and the special use that is applicable to the industry that needs the generator long-term steady operation uses.

The utility model discloses a solve the technical scheme that above-mentioned problem provided and do: a temperature monitoring automatic protection type generator comprises a base, a rotating shaft, a stator, a rotor, a front end cover, a rear end cover and two temperature sensors, wherein the rotating shaft is rotatably arranged on the base; the exciter stator core with the winding is arranged in the rear end cover and is fixed by bolts; the junction box is arranged on the outer surface of the base; the rotor comprises a winding rotor core, a winding exciter rotor core, a fan, a coupler and a bearing, wherein the coupler, the fan, the winding rotor core, the winding exciter rotor core and the bearing are sequentially arranged on the rotating shaft and rotate along with the rotating shaft, and the two temperature sensors are respectively arranged on the front end cover and the rear end cover.

Preferably, a coupler sheet is arranged on the position, close to the front end cover, of the rotating shaft.

Preferably, an air gap between the front end cover and the coupler is smaller than any one of an air gap at the iron core, an air gap at the exciter and an air gap at the fan; wherein, the air gap between the front end cover and the coupler is the inner diameter of the front end cover minus the outer diameter of the coupler; the air gap at the iron core is the inner diameter of the stator iron core with the winding minus the outer diameter of the rotor iron core with the winding; the air gap at the exciter is the inner diameter of the exciter stator core with the winding minus the outer diameter of the exciter rotor core with the winding; the air gap at the fan is the inner diameter of the base minus the outer diameter of the fan. The front end cover and the coupler are firstly rubbed when the rotor rotates and is not concentric due to installation or other factors, so that the stator, the rotor and the exciter of the generator are prevented from being damaged due to chamber sweeping, and meanwhile, the temperature sensor on the front end cover can be promoted to output a shutdown signal to protect the generator due to heat generated by friction.

Preferably, the rear end cover is provided with a bearing inner cover and a bearing outer cover for protecting the bearing.

Compared with the prior art, the utility model has the advantages that: when the rotor rotates eccentrically due to installation or other factors, friction is caused between the front end cover and the coupler, and a shutdown instruction is sent out when the feedback temperature t1 of the temperature sensor on the front end cover is higher than the shutdown temperature t2 set by the unit; the rear end cover is also provided with a temperature sensor, the bearing inner cover and the bearing outer cover are assembled on the rear end cover and used for protecting the bearing, and when the bearing is damaged, the feedback temperature t3 of the temperature sensor on the rear end cover is greater than the set shutdown temperature t2, so that a shutdown command is sent. The whole unit stops running when any condition is met.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the front end cover and the shaft coupling of the present invention.

Fig. 3 is a schematic diagram of the stator core with winding and the rotor core with winding according to the present invention.

Fig. 4 is a schematic view of a stator core and a rotor core of a field-excited machine with windings according to the present invention.

Fig. 5 is a schematic view of the base and the fan according to the present invention.

Fig. 6 is a schematic view of the rear end cap of the present invention.

The attached drawings are marked as follows: 1. the motor comprises a coupling piece 2, a front end cover 3, a coupling 4, a base 5, a fan 6, a rotating shaft 7, a stator core with winding 8, a rotor core with winding 9, a junction box 10, a stator core with winding 11, a rotor core with winding 12, a rear end cover 13, an inner bearing cover 14, a bearing 15, an outer bearing cover 16 and a temperature sensor

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

The specific embodiment of the utility model is shown in fig. 1 to 6, a temperature monitoring automatic protection type generator, including frame 4, pivot 6, stator, rotor, front end housing 2, rear end cap 12 and two temperature sensor 16, pivot 6 rotates and sets up on frame 4, front end housing 2 and rear end cap 12 set up respectively at the both ends of frame 4, the stator includes tape winding stator core 7, tape winding exciter stator core 10 and terminal box 9, tape winding stator core 7 impresses in frame 4 to fix with holding screw respectively; the exciter stator core 10 with the winding is arranged in the rear end cover 12 and fixed by bolts; the junction box 9 is arranged on the outer surface of the stand 4; the rotor comprises a rotor core 8 with a winding, an exciter rotor core 11 with a winding, a fan 5, a coupler 3 and a bearing 14, wherein the coupler 3, the fan 5, the rotor core 8 with the winding, the exciter rotor core 11 with the winding and the bearing 14 are sequentially arranged on the rotating shaft 6 and rotate along with the rotating shaft 6, and the two temperature sensors 16 are respectively arranged on the front end cover 2 and the rear end cover 12.

And a coupler sheet 1 is arranged on the position, close to the front end cover 2, of the rotating shaft 6.

An air gap between the front end cover 2 and the coupler 3 is smaller than any one of an air gap at the iron core, an air gap at the exciter and an air gap at the fan 5; wherein, the air gap between the front end cover 2 and the coupler 3 is the inner diameter of the front end cover 2 minus the outer diameter of the coupler 3; the air gap at the iron core is the inner diameter of the stator iron core 7 with the winding minus the outer diameter of the rotor iron core 8 with the winding; the air gap at the exciter is the inner diameter of the exciter stator core 10 with the winding minus the outer diameter of the exciter rotor core 11 with the winding; the air gap at the fan 5 is the inner diameter of the base 4 minus the outer diameter of the fan 5.

The rear end cover 12 is provided with a bearing inner cover 13 and a bearing outer cover 15 for protecting the bearing 14.

When in design, an air gap D1 (the inner diameter D11 of the front end cover minus the outer diameter D12 of the coupler, namely D1-D12) at the front end cover 2 and the coupler 3 is smaller than an air gap D2 (the inner diameter D21 of the stator core with winding minus the outer diameter D22 of the rotor core with winding, and D2-D22) at the iron core, an air gap D3 (the inner diameter D31 of the stator core with winding minus the outer diameter D32 of the rotor core with winding, namely D3-D32) at the exciter and an air gap D4 (the inner diameter D41 of the base minus the outer diameter D42 of the fan, namely D4-D41-D42) at the fan, namely D1 < D2, D1 < D3 and D1 < D4, when the rotor rotates eccentrically due to installation or other factors, the front end cover 2 and the coupler 3 rub against each other at first, the stator, the rotor and the exciter of the generator are prevented from being damaged due to chamber sweeping, meanwhile, the friction heat thereof can cause the temperature sensor 16 on the front end cover 2 to output a shutdown signal to protect the generator. Meanwhile, the rear end cover 12 is also provided with a temperature sensor 16, and the bearing inner cover 13 and the bearing outer cover 15 are assembled on the rear end cover for protecting the bearing 14, so that the temperature at the rear end cover 12 can be increased sharply when the bearing 14 is damaged, and the temperature sensor 16 on the rear end cover 12 can be promoted to output a shutdown signal to protect the generator.

The utility model has the advantages that: when the rotor rotates eccentrically due to installation or other factors, friction is caused between the front end cover and the coupler, and a shutdown instruction is sent out when the feedback temperature t1 of the temperature sensor on the front end cover is higher than the shutdown temperature t2 set by the unit; the rear end cover is also provided with a temperature sensor, the bearing inner cover and the bearing outer cover are assembled on the rear end cover and used for protecting the bearing, and when the bearing is damaged, the feedback temperature t3 of the temperature sensor on the rear end cover is greater than the set shutdown temperature t2, so that a shutdown command is sent. The whole unit stops running when any condition is met.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.

Claims

1. The utility model provides a temperature monitoring automatic protection formula generator which characterized in that: the temperature sensor comprises a base (4), a rotating shaft (6), a stator, a rotor, a front end cover (2), a rear end cover (12) and two temperature sensors (16), wherein the rotating shaft (6) is rotatably arranged on the base (4), the front end cover (2) and the rear end cover (12) are respectively arranged at two ends of the base (4), the stator comprises a stator core (7) with a winding, an exciter stator core (10) with the winding and a junction box (9), and the stator core (7) with the winding is pressed into the base (4) and is respectively fixed by a set screw; the exciter stator core (10) with the winding is arranged in the rear end cover (12) and fixed by bolts; the junction box (9) is arranged on the outer surface of the base (4); the rotor comprises a winding rotor core (8), a winding exciter rotor core (11), a fan (5), a coupler (3) and a bearing (14), wherein the coupler (3), the fan (5), the winding rotor core (8), the winding exciter rotor core (11) and the bearing (14) are sequentially arranged on the rotating shaft (6) and follow the rotating shaft (6) to rotate, and the temperature sensors (16) are respectively arranged on the front end cover (2) and the rear end cover (12).

2. The temperature-monitoring automatic protection generator according to claim 1, wherein: and a coupling piece (1) is arranged on the position, close to the front end cover (2), of the rotating shaft (6).

3. The temperature-monitoring automatic protection generator according to claim 1, wherein: an air gap between the front end cover (2) and the coupler (3) is smaller than any one of an air gap at the iron core, an air gap at the exciter and an air gap at the fan (5); wherein, the air gap between the front end cover (2) and the coupler (3) is the inner diameter of the front end cover (2) minus the outer diameter of the coupler (3); the air gap at the iron core is the inner diameter of the stator iron core (7) with the winding minus the outer diameter of the rotor iron core (8) with the winding; the air gap at the exciter is the sum of the inner diameter of a stator core (10) of the exciter with the winding and the outer diameter of a rotor core (11) of the exciter with the winding; the air gap at the fan (5) is the inner diameter of the base (4) minus the outer diameter of the fan (5).

4. The temperature-monitoring automatic protection generator according to claim 1, wherein: and the rear end cover (12) is provided with a bearing inner cover (13) and a bearing outer cover (15) which are used for protecting the bearing (14).