CN210294867U - Motor insulation drying system - Google Patents

Abstract

The application discloses motor insulation drying system. The system comprises: input power, motor, low-voltage cabinet and high-voltage board, the low-voltage cabinet includes: the input power supply is connected with the insulation dryer, the insulation dryer is in communication connection with the PLC and the touch screen, and the output end of the insulation dryer is connected with the stator of the motor and the wire outlet end of the high-voltage cabinet. The utility model provides a because the environment is moist, the unit is in the shut down period, and it is very easy to wet and insulating decline, leads to the unit to possess the start condition at any time, influences the technical problem of flood discharge.

Description

Motor insulation drying system

Technical Field

The application relates to the field of motor drying, in particular to a motor insulation drying system.

Background

The main equipment of the pump station is generally a unit, the equipment is frequently started and stopped, and particularly in rainy seasons, the unit needs to be started immediately every time rainstorm occurs. However, due to the humid environment, the unit is easily affected with damp and the insulation is reduced during the shutdown period, so that the unit cannot have the startup condition at any time, and flood drainage is affected.

Aiming at the problems that the unit cannot have a starting condition at any time and flood drainage is influenced due to the fact that the unit is easy to damp and the insulation is reduced during shutdown due to the fact that the environment is humid in the related technology, and an effective solution is not provided at present.

Disclosure of Invention

The main aim at of this application provides an insulating drying system of motor to solve the environment humidity, unit during the shut down, wet very easily and insulating decline, lead to the unit can not possess the start condition at any time, influence the problem of flood discharge.

In order to achieve the above object, according to one aspect of the present application, there is provided a motor insulation drying system.

The motor insulation drying system according to the present application includes: input power, motor, low-voltage cabinet and high-voltage board, the low-voltage cabinet includes: the input power supply is connected with the insulation dryer, the insulation dryer is in communication connection with the PLC and the touch screen, and the output end of the insulation dryer is connected with the stator of the motor and the wire outlet end of the high-voltage cabinet.

Further, the insulation dryer model of the insulation dryer is GNT 20.

Further, the low-voltage cabinet is KYN 28A.

Further, the insulation dryer includes: the heating circuit comprises a thermal resistor, a control chip, a pulse adjusting circuit, a heating control circuit and a first analog-to-digital conversion circuit, wherein the pulse adjusting circuit, the heating control circuit and the first analog-to-digital conversion circuit are connected with the control chip, and the first analog-to-digital conversion circuit is connected with the thermal resistor.

Further, the insulation dryer includes: the dehumidification control circuit comprises a current transformer, a control chip, a dehumidification control circuit and a second analog-to-digital conversion circuit, wherein the dehumidification control circuit is connected with the control chip, and the second analog-to-digital conversion circuit is connected with the current transformer.

Further, the insulation dryer includes: the device comprises a thermal resistor, a current transformer, a control chip, a pulse adjusting circuit, a heating control circuit, a dehumidification control circuit, a first analog-to-digital conversion circuit and a second analog-to-digital conversion circuit, wherein the pulse adjusting circuit, the heating control circuit, the dehumidification control circuit, the first analog-to-digital conversion circuit and the second analog-to-digital conversion circuit are connected with the control chip, the first analog-to-digital conversion circuit is connected with the thermal resistor, and the second analog-to.

Further, the method also comprises the following steps: the safety relay, with heating circuit breaker, the motor circuit breaker that safety relay links to each other, heating circuit breaker with the output of insulating desicator is connected, motor circuit breaker with the leading-out terminal of high-voltage board is connected.

Further, the method also comprises the following steps: and the insulation testing device is connected with the output end of the insulation dryer.

Further, the method also comprises the following steps: temperature sensor and vibration sensor, temperature sensor, vibration sensor set up on the motor, wireless communication module on the insulating desicator with control chip on the insulating desicator connects, temperature sensor and vibration sensor with wireless communication module communication connection.

Further, the method also comprises the following steps: and the high-voltage vacuum circuit breaker is arranged at the wire outlet end of the high-voltage cabinet and connected with the output end of the insulation dryer.

In this application embodiment, adopt the insulating dry mode of motor, through input power, motor, low-voltage cabinet and high-voltage board, the low-voltage cabinet includes: insulating desicator, PLC and touch-sensitive screen, input power supply with insulating desicator connects, insulating desicator with PLC touch-sensitive screen communication connection, insulating desicator's output with the stator of motor, the leading-out terminal of high-voltage board are connected, have reached the unit and also can dry in order not to influence insulating purpose to the motor during shut down to realized that the unit possesses the condition of starting at any time, and can not influence the technological effect of flood discharge, and then solved because the environment is moist, the unit is during shut down, wet and insulating decline very easily, lead to the unit can not possess the starting condition at any time, influence the technical problem of flood discharge.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic circuit diagram of a motor insulation drying system according to an embodiment of the present application;

FIG. 2 is one of schematic structural diagrams of a motor insulation drying system according to an embodiment of the present application;

fig. 3 is a second schematic structural diagram of a motor insulation drying system according to an embodiment of the present application;

FIG. 4 is one of the schematic circuit diagrams of a motor insulation drying system according to an embodiment of the present application;

FIG. 5 is a second schematic circuit diagram of a motor insulation drying system according to an embodiment of the present application;

fig. 6 is a third schematic circuit diagram of a motor insulation drying system according to an embodiment of the present application.

Reference numerals

1. Inputting a power supply; 2. a motor; 3. a low-voltage cabinet; 4. a high-voltage cabinet; 5. an insulating dryer; 6. a PLC; 7. a touch screen; 8. a thermal resistor; 9. a current transformer; 10. a control chip; 11. a pulse conditioning circuit; 12. a heating control circuit; 13. a dehumidification control circuit; 14. a first analog-to-digital conversion circuit; 15. a second analog-to-digital conversion circuit; 16. an insulation test device; 17. a temperature sensor; 18. a vibration sensor; 19. and a wireless communication module.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-5, the present application relates to an electric machine 2 insulation drying system, comprising: input power supply 1, motor 2, low-voltage cabinet 3 and high-voltage cabinet 4, low-voltage cabinet 3 includes: insulating desicator 5, PLC6 and touch-sensitive screen 7, input power 1 with insulating desicator 5 connects, insulating desicator 5 with PLC6 touch-sensitive screen 7 communication connection, the output of insulating desicator 5 with the stator of motor 2, the leading-out terminal of high-voltage board 4 is connected.

Specifically, the input power source 1 has a function of supplying electric power to the insulated dryer 5; preferably, the input power source 1 is a three-phase four-wire, AC 380V. Motor 2 has the effect of providing kinetic energy for the flood discharge, and in this embodiment, preferred, motor 2 is the unit, can throw and provide great kinetic energy, guarantees the flood discharge. The low-voltage cabinet 3 has the functions of fixing the insulating dryer 5, the PLC6 and the touch screen 7, the fixing mode can be the connection modes of clamping, hanging, embedding and the like in the prior art, and the fixing purpose can be achieved; as is preferred in the present embodiment, the low-voltage cabinet 3 is of a model of KYN28A, and the cabinet of the model can be well compatible and fixed with other equipment.

The insulation drier 5 has at least a function of drying the motor 2; preferably, in this embodiment, the insulating dryer 5 of the insulating dryer 5 is GNT20, the insulating dryer 5 with GNT20 is selected, and the insulating dryer is provided with an ethernet interface and a Profibus-DP communication interface, and can adopt any interface to seamlessly communicate with the PLC6 and the touch screen 7, so that information interaction can be performed with the touch screen 7 and the PLC6, automatic operation and safety interlock of the device are realized through safety logic locking and operation control logic of the PLC6, and meanwhile, the temperatures of the motor 2 and the environment are collected, the insulation value of the motor 2 is collected, a history record and a history curve are formed, and the history record and the history curve can be conveniently viewed on the touch screen 7.

As is preferable in the present embodiment, the insulation dryer 5 includes: the heating circuit comprises a thermal resistor 8, a control chip 10, a pulse adjusting circuit 11, a heating control circuit 12 and a first analog-to-digital conversion circuit 14, wherein the pulse adjusting circuit 11, the heating control circuit 12 and the first analog-to-digital conversion circuit 14 are connected with the control chip 10, and the first analog-to-digital conversion circuit 14 is connected with the thermal resistor 8; because the output of insulating desicator 5 is connected with the stator of motor 2, the leading-out terminal of high-voltage board 4, so through each circuit in the above heating circuit and the cooperation of control chip 10, can realize the heating control to thermal resistance 8, let the evaporation of water through the heating, realized the drying. Thereby the unit also can carry out the drying in order not to influence insulating to motor 2 during the shut down, and then has realized that the unit possesses the condition of starting up at any time, and can not influence the flood discharge.

From the above description, it can be seen that the following technical effects are achieved by the present application:

in this application embodiment, adopt the insulating dry mode of motor 2, through input power 1, motor 2, low-voltage cabinet 3 and high-voltage cabinet 4, low-voltage cabinet 3 includes: insulating desicator 5, PLC6 and touch-sensitive screen 7, input power supply 1 with insulating desicator 5 connects, insulating desicator 5 with PLC6 touch-sensitive screen 7 communication connection, insulating desicator 5's output with the stator of motor 2, the leading-out terminal of high-voltage board 4 are connected, have reached the unit and also can carry out the drying with the insulating purpose of not influencing to motor 2 during the shut down to realized the unit and possessed the condition of starting up at any time, and can not influence the technological effect of flood discharge, and then solved because the environment is moist, the unit is in during the shut down, wet and insulating decline very easily, lead to the unit can not possess the starting up condition at any time, influence the technical problem of flood discharge.

As is preferable in the present embodiment, the insulation dryer 5 includes: the dehumidification control circuit comprises a current transformer 9, a control chip 10, a dehumidification control circuit 13 connected with the control chip 10 and a second analog-to-digital conversion circuit 15, wherein the second analog-to-digital conversion circuit 15 is connected with the current transformer 9. Because the output end of the insulation drier 5 is connected with the stator of the motor 2 and the outlet end of the high-voltage cabinet 4, the dehumidification control of the current transformer 9 can be realized through the matching of each circuit in the dehumidification loop and the control chip 10, the interior of the motor 2 is dried through dehumidification, and the dehumidification speed is high. Thereby the unit also can carry out the drying in order not to influence insulating to motor 2 during the shut down, and then has realized that the unit possesses the condition of starting up at any time, and can not influence the flood discharge.

As is preferable in the present embodiment, the insulation dryer 5 includes: the device comprises a thermal resistor 8, a current transformer 9, a control chip 10, a pulse adjusting circuit 11, a heating control circuit 12, a dehumidification control circuit 13, a first analog-to-digital conversion circuit 14 and a second analog-to-digital conversion circuit 15, wherein the pulse adjusting circuit 11, the heating control circuit 12, the dehumidification control circuit 13, the first analog-to-digital conversion circuit 14 and the second analog-to-digital conversion circuit 15 are connected with the control chip 10, the first analog-to-digital conversion circuit 14 is connected with the thermal resistor 8, and the second analog. Because the output of insulating desicator 5 and the stator of motor 2, the leading-out terminal of high-voltage board 4 are connected, so through each circuit in the above dehumidification return circuit and the cooperation of control chip 10, can realize the dehumidification control to current transformer 9, make motor 2 inside dry through the dehumidification, dehumidification is fast to combine the heating circuit to carry out further evaporation treatment to remaining moisture, reach good drying purpose. Thereby the unit also can carry out the drying in order not to influence insulating to motor 2 during the shut down, and then has realized that the unit possesses the condition of starting up at any time, and can not influence the flood discharge.

Preferably, in this embodiment, the method further includes: the safety relay, with heating circuit breaker, the 2 circuit breakers of motor that the safety relay links to each other, the heating circuit breaker with the output of insulating desicator 5 is connected, the 2 circuit breakers of motor with the leading-out terminal of high-voltage board 4 is connected. The circuit breaker state contacts of the opposite side are respectively penetrated into a closing circuit and a tripping circuit of the motor 2 loop and the heating loop to serve as interlocking conditions, and when the motor 2 circuit breaker is closed, the heating circuit breaker is not allowed to be closed; when the heating circuit breaker is closed, the motor 2 circuit breaker is not allowed to close. In order to prevent the fault of the auxiliary contact of the circuit breaker, which leads to the error of indicating the closed state of the circuit breaker, 2 groups of conversion contacts of the circuit breaker are introduced at the same time, only when the logic of the conversion contacts of each group is opposite, the circuit breaker can be considered as the correct contact state, and only when the logic of the 2 groups of contacts is correct, the circuit breaker can be judged as the correct circuit breaker state indicating signal. The status indication signals of the circuit breaker of the motor 2 and the heating circuit breaker are simultaneously introduced into a special safety relay module, and the contacts of the safety relay send action signals. The contact of the safety relay has a fault forced guiding function, and even if the contact is adhered, the mechanical structure can force the contact to guide to a safety state.

Preferably, in this embodiment, the method further includes: and the insulation testing device 16 is connected with the output end of the insulation dryer 5, and the insulation testing device 16 is connected with the output end of the insulation dryer 5. The insulation testing device 16 measures the insulation of the motor 2 at regular time, records the insulation and draws a historical curve. So that the user can check the insulation change condition at any time.

Preferably, in this embodiment, the method further includes: the temperature sensor 17 and the vibration sensor 18 are arranged on the motor 2, the wireless communication module 19 on the insulation dryer 5 is connected with the control chip 10 on the insulation dryer 5, and the temperature sensor 17 and the vibration sensor 18 are in communication connection with the wireless communication module 19. The temperature sensor can sense the external temperature and the internal temperature of the motor 2, automatically set the temperature change slope, enable the medium in the motor 2 to be uniformly expanded or shrunk, reduce the 'breathing' effect of the motor 2, enable the motor 2 to be uniformly deformed integrally, keep compactness and enable the motor 2 to be maximally protected in insulation. The vibration condition of the motor 2 can be measured through the vibration sensor 18, and the normal operation of the motor 2 is guaranteed; the temperature sensor 17 and the vibration sensor 18 are both sent to the control chip 10 through the wireless communication module 19, so as to provide data analysis guarantee for further control.

Preferably, in this embodiment, the method further includes: and the high-voltage vacuum circuit breaker is arranged at the wire outlet end of the high-voltage cabinet 4 and connected with the output end of the insulation dryer 5. The VS1 high-voltage vacuum circuit breaker is adopted, the VS1 high-voltage vacuum circuit breaker and the VS1 high-voltage vacuum circuit breaker are isolated from each other through a main circuit, and the withstand voltage requirement is met.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An electric machine insulation drying system, comprising: input power, motor, low-voltage cabinet and high-voltage board, the low-voltage cabinet includes: the input power supply is connected with the insulation dryer, the insulation dryer is in communication connection with the PLC and the touch screen, and the output end of the insulation dryer is connected with the stator of the motor and the wire outlet end of the high-voltage cabinet.

2. The motor insulation drying system of claim 1, wherein the insulation dryer has an insulation dryer model number GNT 20.

3. The motor insulation drying system of claim 1, wherein the low voltage cabinet is KYN28A model.

4. The motor insulation drying system of claim 1, wherein the insulation dryer comprises: the heating circuit comprises a thermal resistor, a control chip, a pulse adjusting circuit, a heating control circuit and a first analog-to-digital conversion circuit, wherein the pulse adjusting circuit, the heating control circuit and the first analog-to-digital conversion circuit are connected with the control chip, and the first analog-to-digital conversion circuit is connected with the thermal resistor.

5. The motor insulation drying system of claim 1, wherein the insulation dryer comprises: the dehumidification control circuit comprises a current transformer, a control chip, a dehumidification control circuit and a second analog-to-digital conversion circuit, wherein the dehumidification control circuit is connected with the control chip, and the second analog-to-digital conversion circuit is connected with the current transformer.

6. The motor insulation drying system of claim 1, wherein the insulation dryer comprises: the device comprises a thermal resistor, a current transformer, a control chip, a pulse adjusting circuit, a heating control circuit, a dehumidification control circuit, a first analog-to-digital conversion circuit and a second analog-to-digital conversion circuit, wherein the pulse adjusting circuit, the heating control circuit, the dehumidification control circuit, the first analog-to-digital conversion circuit and the second analog-to-digital conversion circuit are connected with the control chip, the first analog-to-digital conversion circuit is connected with the thermal resistor, and the second analog-to.

7. The motor insulation drying system of claim 1, further comprising: the safety relay, with heating circuit breaker, the motor circuit breaker that safety relay links to each other, heating circuit breaker with the output of insulating desicator is connected, motor circuit breaker with the leading-out terminal of high-voltage board is connected.

8. The motor insulation drying system of claim 1, further comprising: and the insulation testing device is connected with the output end of the insulation dryer.

9. The motor insulation drying system of claim 1, further comprising: temperature sensor and vibration sensor, temperature sensor, vibration sensor set up on the motor, wireless communication module on the insulating desicator with control chip on the insulating desicator connects, temperature sensor and vibration sensor with wireless communication module communication connection.

10. The motor insulation drying system of claim 1, further comprising: and the high-voltage vacuum circuit breaker is arranged at the wire outlet end of the high-voltage cabinet and connected with the output end of the insulation dryer.

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