CN212034019U - Motor baking system - Google Patents
Motor baking system Download PDFInfo
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- CN212034019U CN212034019U CN202021055292.6U CN202021055292U CN212034019U CN 212034019 U CN212034019 U CN 212034019U CN 202021055292 U CN202021055292 U CN 202021055292U CN 212034019 U CN212034019 U CN 212034019U
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- controlled rectifier
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Abstract
The utility model relates to a motor safety guarantee system, which provides a motor baking system for solving the technical problems of low baking efficiency, poor economy, heavy equipment, short service life and difficult wiring and more restriction of field conditions in the existing motor baking method, and comprises a display instrument, a temperature controller, a direct current transmitter and a trigger adjusting plate; the main incoming line switch, the transformer and the three-phase silicon controlled rectifier full bridge are sequentially arranged between the three-phase alternating current and the motor; the working power supply of the display instrument and the working power supply of the temperature controller are respectively connected with three-phase alternating current and connected between the main incoming line switch and the transformer; the signal input end of the temperature controller is connected with a stator coil temperature measuring element of the motor; the signal input end of the direct current transmitter is connected with a direct current sensor between the three-phase silicon controlled rectifier full bridge and the motor, and the signal output end of the direct current transmitter is connected with the display instrument; and the output control end of the trigger adjusting plate is connected with a three-phase silicon controlled rectifier full bridge.
Description
Technical Field
The utility model relates to a motor security guarantee system, concretely relates to motor baking system.
Background
In rainy season of humid areas, the motor, especially the standby motor, absorbs humid gas in the air of the nature, insulation generally drops to some extent, and great potential safety hazards are brought to subsequent operation.
At present, the following methods are mainly adopted to improve the problems: (1) the high-voltage motor of about 10kV adopts a motor space heater for baking, but in consideration of safety, most of the space heaters are arranged on the inner wall of a motor shell, heat is generated by resistance, and the interior of the motor is heated by air convection, so that the efficiency is low and the baking speed is slow; (2) the high-voltage motor is about 10kV, the stator is connected with a 380V power supply for baking, the power supply far lower than the rated voltage is applied to the stator, and because enough rotating torque cannot be generated, the current generates a heat effect in the stator under the working condition that the motor does not operate, so that the baking speed can be increased, but a large amount of reactive loss is generated, only a very small part of current generates the heat effect, the economy is very poor, the capacity of the power supply is large, and the section of a required cable is large and cannot be adjusted; (3) the high-voltage motor and the low-voltage motor can be connected with the rotor to be baked by adopting the electric welding machine, but the corresponding equipment is heavy and has high energy consumption, and the electric welding machine is in a working state for a long time, so that the service life of the electric welding machine is influenced; (4) both the high-voltage motor and the low-voltage motor can be baked by adopting a synchronous motor excitation cabinet, but the baking and wiring are difficult and are limited by more field conditions.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve present motor baking method and have the baking inefficiency, economic nature is poor, the equipment is heavy and life is short to and the difficult field condition restriction that accepts of wiring technical problem such as many, provide a motor baking system.
In order to achieve the above object, the utility model provides a following technical scheme:
a motor baking system is characterized by comprising a display instrument, a temperature controller, a direct current transmitter and a trigger adjusting plate; the main incoming line switch, the transformer and the three-phase silicon controlled rectifier full bridge are sequentially arranged between the three-phase alternating current and the motor;
the working power supply of the display instrument and the working power supply of the temperature controller are respectively connected with three-phase alternating current and connected between the main incoming line switch and the transformer;
the signal input end of the temperature controller is connected with a stator coil temperature measuring element of the motor; the signal output end of the temperature controller is connected with the input end of the trigger adjusting plate to form an automatic adjusting unit;
the signal input end of the direct current transmitter is connected with a direct current sensor between the three-phase silicon controlled rectifier full bridge and the motor, and the signal output end of the direct current transmitter is connected with the display instrument;
and the output control end of the trigger adjusting plate is connected with a three-phase silicon controlled rectifier full bridge.
The input end of the switch power supply is connected with a zero line and a phase line of three-phase alternating current, and the output end of the switch power supply is connected with a working power supply of the direct current transmitter.
Furthermore, a signal isolator is arranged between the direct current transmitter and the display instrument; one output end of the signal isolator is connected with the display instrument, and the other output end of the signal isolator is connected with the overcurrent controller.
Furthermore, the main incoming line switch is provided with a brake separating coil for receiving a current protection signal and a temperature protection signal, the output end of the overcurrent controller is connected with the current protection signal brake separating coil of the main incoming line switch, and the temperature protection output end of the temperature controller is connected with the temperature protection signal brake separating coil of the main incoming line switch.
Further, the three-phase silicon controlled rectifier full-bridge heat dissipation device further comprises a heat dissipation fan, wherein the heat dissipation fan is connected with the three-phase alternating current and used for dissipating heat of the transformer and the three-phase silicon controlled rectifier full-bridge.
Further, the trigger adjusting plate comprises a manual adjusting unit and an automatic adjusting unit;
the manual adjusting unit adjusts output voltage through a potentiometer;
and the acquisition input end of the automatic adjusting unit is connected with the temperature controller.
Furthermore, a diode is connected in parallel between the motor and the three-phase silicon controlled rectifier full bridge.
Further, the reverse-phase withstand voltage of the three-phase silicon controlled rectifier full bridge is 600V.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the motor baking system of the utility model adopts a direct current baking mode, the heating efficiency is far higher than that of alternating current baking, and the heating efficiency is more than three times that of alternating current baking through verification; the applicability is strong, and the motor with different voltage grades and different capacities can be applied; the voltage transmitted to the motor can be adjusted according to the temperature collected by a stator coil temperature measuring element of the motor, so that the effect of adjusting the baking temperature of the motor is achieved, controllable adjustment can be realized, and the energy-saving and high-efficiency effects are achieved; will the utility model discloses a motor toasts system installation and forms equipment after, equipment is light, is convenient for remove, and the wiring is simple, only needs to link to each other with outside three-phase alternating current to link to each other the stator coil temperature element of temperature controller and motor can, economic nature is high.
2. The utility model discloses still be provided with the switching power supply who links to each other with three-phase alternating current zero line, make the system need not to dispose the trigger adjusting plate, temperature controller and the display instrument that 220V exchanged specially again, the commonality is stronger, and it is more convenient to use.
3. The utility model discloses still set up signal isolator between direct current transmitter and display instrument, can convert current signal to the DC4-20mA standard signal of output according to linear proportion, make its transport to display instrument that can be continuous.
4. The utility model discloses a main service entrance switch has the separating brake coil, has current protection and temperature protect function, makes the entire system return circuit possess the tripping operation protection, when motor temperature is too high or input current is too big, and the homoenergetic makes the return circuit in time break off, avoids appearing the incident.
5. The utility model discloses still dispose radiator fan for transformer and three-phase silicon controlled rectifier full-bridge, make transformer and three-phase silicon controlled rectifier full-bridge's work safe high-efficient more.
6. The utility model discloses it has the diode to connect in parallel between well motor and the three-phase silicon controlled rectifier full-bridge, can avoid the reverse electromotive force breakdown three-phase silicon controlled rectifier full-bridge of motor.
7. The utility model discloses a trigger adjusting plate possesses manual regulation and automatically regulated's function simultaneously, can also carry out manual regulation through the potentiometre under the special case according to the temperature conditions automatically regulated of motor, uses more in a flexible way, and the suitability is more extensive.
Drawings
Fig. 1 is a schematic view of a connection structure of an embodiment of the motor baking system of the present invention.
The system comprises a main incoming line switch 1, a transformer 2, a three-phase silicon controlled rectifier full bridge 3, a display instrument 4, a cooling fan 5, a temperature controller 6, a direct current transmitter 7, a trigger adjusting plate 8, a motor 9, a switching power supply 10, a signal isolator 11 and an overcurrent controller 12.
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 not limitations of the present invention.
Like fig. 1, the utility model provides a motor baking system, controllable direct current toasts the power and is far above adopting the interchange to toast in heating efficiency, and efficiency is that the interchange toasts 3 times more to applicable in multiple capacity, the motor 9 of different voltage classes toasts. Whether in terms of manufacturing costs, use costs, work efficiency, or ease of use of the device, are far superior to the various methods and devices currently in use. Comprises a display instrument 4, a cooling fan 5, a temperature controller 6, a DC current transmitter 7, a trigger adjusting plate 8, a switching power supply 10 and a signal isolator 11.
A main incoming line switch 1, a transformer 2 and a three-phase silicon controlled rectifier full bridge 3 are sequentially arranged between the three-phase alternating current and the motor 9. The transformer 2 is arranged for the purpose that on one hand, when the next three-phase silicon controlled rectifier full bridge 3 is out of control, the voltage is not too high, and the motor is not burnt; on the other hand, the input voltage of the rectifying loop is close to the actual direct-current voltage, so that the direct-current output waveform is flatter and the ripple factor is better. The rectification part adopts a three-phase silicon controlled rectifier full bridge 3, so that the voltage is conveniently adjusted to adapt to motors with different capacities. Because the capacity of the motor is different, the direct current resistance of the winding is also different, and in order to achieve the appropriate heating effect, the direct current power supply can be ensured to be in a controllable and adjustable state through the three-phase silicon controlled rectifier full bridge 3.
The display instrument 4 and the temperature controller 6 are respectively connected with three-phase alternating current and connected between the main incoming line switch 1 and the transformer 2. The temperature signal of the temperature controller 6 comes from a temperature measuring element of a stator coil, the temperature controller 6 is connected with a trigger adjusting plate 8, the trigger adjusting plate 8 can realize automatic adjustment through the temperature controller 6, and the output of the three-phase silicon controlled rectifier full bridge 3 is adjusted; in addition, the trigger adjusting plate 8 has a manual adjusting unit, and adjusts the output voltage through a potentiometer, so as to adjust the output of the three-phase silicon controlled rectifier full bridge 3. The baking conditions of the motor 9 can be adjusted in a general case by automatic adjustment, or in a special case, can be adjusted supplementarily by a manual adjustment unit.
One end of the switch power supply 10 is connected with a zero line of three-phase alternating current, the other end is connected with the direct current transducer 7, if the working power supply of the trigger adjusting plate 8, the temperature controller 6 and the display instrument 4 is not alternating current 200V, the applicability of the switch power supply can be ensured, and if the working power supply of the trigger adjusting plate 8, the temperature controller 6 and the display instrument 4 is alternating current 200V, the switch power supply 10 can be omitted.
The signal input end of the direct current transducer 7 is connected between the three-phase silicon controlled rectifier full bridge 3 and the motor 9, the signal output end is connected with the display instrument 4, and the display instrument 4 is used for displaying and outputting a direct current value. In order to directly convert the current into a standard signal of a DC4-20mA constant current loop which is output according to a linear proportion and continuously transmit the standard signal to the display instrument 4, a signal isolator 11 is arranged between the display instrument 4 and the direct current transmitter 7, meanwhile, the signal isolator 11 is also connected with an overcurrent controller 12, and the overcurrent controller 12 is connected with the main incoming line switch 1.
The utility model discloses still be provided with the tripping operation protection, main service entrance switch 1 has short-circuit protection and partial overload protection function concurrently, and it has the separating brake coil for receive current protection signal and temperature protection signal, temperature controller 6 and overcurrent controller 12 provide temperature protection signal and current protection signal respectively, and when electric current or temperature surpassed the expectation, main service entrance switch 1 can automatic tripping operation protection, has ensured the safe operation of motor baking system, greatly reduced the possibility of incident appearing.
The utility model discloses a motor baking system, power utilization is higher, and is steerable, is suitable for multiple motor, corresponds this baking system and makes into when equipping, easy operation and light be convenient for remove, only need with outside alternating current and motor 9 link to each other can, wiring convenient operation.
The above is only the embodiment of the present invention, and is not the limitation of the protection scope of the present invention, all the equivalent structure changes made in the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. A motor baking system is characterized in that: comprises a display instrument (4), a temperature controller (6), a direct current transmitter (7) and a trigger adjusting plate (8); the main incoming line switch (1), the transformer (2) and the three-phase silicon controlled rectifier full bridge (3) are sequentially arranged between the three-phase alternating current and the motor (9);
the working power supply of the display instrument (4) and the working power supply of the temperature controller (6) are respectively connected with three-phase alternating current and connected between the main incoming line switch (1) and the transformer (2);
the signal input end of the temperature controller (6) is connected with a stator coil temperature measuring element of the motor (9); the signal output end of the temperature controller (6) is connected with the input end of the trigger adjusting plate (8) to form an automatic adjusting unit;
the signal input end of the direct current transmitter (7) is connected with a direct current sensor between the three-phase silicon controlled rectifier full bridge (3) and the motor (9), and the signal output end of the direct current transmitter is connected with the display instrument (4);
and the output control end of the trigger adjusting plate (8) is connected with the three-phase silicon controlled rectifier full bridge (3).
2. The motor roasting system of claim 1, wherein: the device is characterized by further comprising a switch power supply (10), wherein the input end of the switch power supply (10) is connected with a zero line and a phase line of three-phase alternating current, and the output end of the switch power supply (10) is connected with a working power supply of the direct current transmitter (7).
3. The motor roasting system of claim 1 or 2, further comprising: a signal isolator (11) is arranged between the direct current transmitter (7) and the display instrument (4); one output end of the signal isolator (11) is connected with the display instrument (4), and the other output end of the signal isolator is connected with the overcurrent controller (12).
4. The motor roasting system of claim 3, wherein: the main incoming line switch (1) is provided with a brake separating coil used for receiving a current protection signal and a temperature protection signal, the output end of the overcurrent controller (12) is connected with the current protection signal brake separating coil of the main incoming line switch (1), and the temperature protection output end of the temperature controller (6) is connected with the temperature protection signal brake separating coil of the main incoming line switch (1).
5. The motor roasting system of claim 4, wherein: still include radiator fan (5), radiator fan (5) link to each other with the three-phase alternating current for dispel the heat to transformer (2) and three-phase silicon controlled rectifier full bridge (3).
6. The motor roasting system of claim 5, wherein: the trigger adjustment plate (8) comprises a manual adjustment unit,
the manual adjusting unit adjusts output voltage through a potentiometer.
7. The motor roasting system of claim 6, wherein: and a diode is connected in parallel between the motor (9) and the three-phase silicon controlled rectifier full bridge (3).
8. The motor roasting system of claim 7, wherein: the reverse-phase withstand voltage of the three-phase silicon controlled rectifier full bridge (3) is 600V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021055292.6U CN212034019U (en) | 2020-06-10 | 2020-06-10 | Motor baking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021055292.6U CN212034019U (en) | 2020-06-10 | 2020-06-10 | Motor baking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212034019U true CN212034019U (en) | 2020-11-27 |
Family
ID=73476554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021055292.6U Active CN212034019U (en) | 2020-06-10 | 2020-06-10 | Motor baking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212034019U (en) |
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2020
- 2020-06-10 CN CN202021055292.6U patent/CN212034019U/en active Active
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