CN206977279U - A kind of heating arrangement that can improve motor insulation values automatically - Google Patents

Abstract

The utility model relates to a heating structure capable of automatically improving the insulation value of a motor, which relates to the field of motor detection and maintenance equipment, including: a switching power supply, a temperature sensor, a display, a control circuit and a field effect tube arranged in the motor; the switching power supply is provided with two ; Two switching power supplies form a pulse width modulation circuit through the connection of the field effect tube and the control circuit; the pulse width modulation circuit is connected to the winding of the motor; the control circuit is also connected to the temperature sensor; the temperature sensor detects the instant temperature of the motor winding; The sensor transmits the electrical signal to the display; the control circuit adjusts the magnitude of the input current according to the temperature detected by the temperature sensor. The motor insulation heater uses the principle of low voltage and high current to heat the motor windings, and the frequency conversion design automatically adapts to the inductance of the motor. The insulation of the motor can be repaired without disassembling the motor. And there is no need to disassemble the motor, just connect the power cord and turn on the power switch, and the heating temperature can be automatically controlled.

Description

A heating structure that can automatically increase the insulation value of motors

technical field

The utility model relates to the field of motor detection and maintenance equipment, in particular to a heating structure that can automatically improve the insulation value of a motor.

Background technique

In the rainy season, due to the increase of moisture in the air, the insulation of the motor is easy to reduce, which will affect the electrical safety performance. The traditional method is to put the motor in an oven for a certain period of time or in a dry environment. This method is inconvenient to operate. The time is too long and other disadvantages. This heater is to increase the temperature of the winding by adding low-voltage and high-current direct current to the motor winding to drive away the moisture and increase the insulation. This heater has the characteristics of simple operation, safety, convenience and small size.

Utility model content

The technical problem mainly solved by the utility model is to provide a heating structure that can automatically improve the insulation value of the motor, and solve the problem of automatic detection, heating and drying of the motor winding.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a heating structure that can automatically improve the insulation value of the motor, including: a switching power supply, a temperature sensor, a display, a control circuit and a field effect tube arranged in the motor; There are two switching power supplies; the two switching power supplies form a pulse width modulation circuit through the connection of the field effect tube and the control circuit; the pulse width modulation circuit is connected to the winding of the motor; the control circuit is also connected to the temperature sensor; The temperature sensor detects the instant temperature of the motor winding; the temperature sensor transmits the electrical signal to the display; the control circuit adjusts the magnitude of the input current according to the temperature detected by the temperature sensor.

Preferably, the specification of the switching power supply is 12V/1000W; the winding resistance of the motor does not exceed 50 milliohms.

Preferably, the display is a digital tube.

The utility model has the beneficial effects of providing a heating structure that can automatically increase the insulation value of the motor, using the principle of low voltage and high current to heat the motor winding, and the frequency conversion design automatically adapting to the inductance of the motor. The insulation of the motor can be repaired without disassembling the motor. And there is no need to disassemble the motor, just connect the power cord and turn on the power switch, and the heating temperature can be automatically controlled.

Description of drawings

Fig. 1 is a structural connection schematic diagram of a heating structure that can automatically improve the insulation value of a motor in the present invention;

Figure 2 is a functional block diagram illustrating the operation of the motor insulation heater

Fig. 3 is a circuit diagram of a control circuit.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly .

Please refer to accompanying drawing 1 to 3, the utility model embodiment comprises:

A heating structure that can automatically improve the insulation value of a motor, including: a switching power supply 1, a temperature sensor 4, a display 6, a control circuit 3 and a field effect tube 2 arranged in the motor; the switching power supply 1 is provided with two; two A switching power supply 1 forms a pulse width modulation circuit through the connection of the field effect transistor 2 and the control circuit 3, and the current delivered to the winding 5 can reach 400A; the pulse width modulation circuit is connected to the winding 5 of the motor; the control circuit 3 is also connected to the winding 5. The temperature sensor 4; the temperature sensor 4 detects the instant temperature of the motor winding; the temperature sensor 4 transmits the electrical signal to the display 6; the control circuit 3 adjusts the size of the input current according to the temperature detected by the temperature sensor 4, The heating is automatically controlled according to the data obtained by the temperature sensor 4 in real time, and the heating frequency is automatically converted by the inductance of the motor, so as to achieve the maximum working efficiency. The specification of the switching power supply 1 is 12V/1000W; the resistance of the winding 5 of the motor does not exceed 50 milliohms. The display 6 is a digital tube. The motor insulation heater uses the principle of low voltage and high current to heat the motor windings, and the frequency conversion design automatically adapts to the inductance of the motor. The insulation of the motor can be repaired without disassembling the motor. And there is no need to disassemble the motor, just connect the power cord and turn on the power switch, and the heating temperature can be automatically controlled. This program is suitable for after-sales maintenance of motor manufacturers, and also for fixed maintenance points of motors, and the actual use effect is ideal.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (3)

1. A kind of 1. heating arrangement that can improve motor insulation values automatically, it is characterised in that：Including being arranged in motor：Switch electricity Source, temperature sensor, display, control circuit and FET；The Switching Power Supply is provided with two；Two Switching Power Supplies are passed through The connection composition pulse-width modulation circuit of FET and control circuit；The pulse-width modulation circuit accesses the winding of motor；The control Circuit processed is also connected with the temperature sensor；The real-time temperature of the temperature sensor detection machine winding；The TEMP Electric signal is transferred to the display by device；The temperature that the control circuit detects according to temperature sensor adjusts input current Size.
2. A kind of 2. heating arrangement that can improve motor insulation values automatically according to claim 1, it is characterised in that：It is described to open The specification in powered-down source is 12V/1000W；The winding resistance of motor is no more than 50 milliohms.
3. A kind of 3. heating arrangement that can improve motor insulation values automatically according to claim 1 or 2, it is characterised in that：Institute It is charactron to state display.