CN208782667U - A kind of device and cooling system preventing electric motor short circuit - Google Patents
A kind of device and cooling system preventing electric motor short circuit Download PDFInfo
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- CN208782667U CN208782667U CN201821454977.0U CN201821454977U CN208782667U CN 208782667 U CN208782667 U CN 208782667U CN 201821454977 U CN201821454977 U CN 201821454977U CN 208782667 U CN208782667 U CN 208782667U
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- short circuit
- motor
- temperature
- electric motor
- control valve
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Abstract
The utility model relates to a kind of device and cooling system for preventing electric motor short circuit, which includes temperature detection sensor, control valve and PLC control system, in which: the temperature detection sensor is mounted on motor surface, for detecting the temperature on motor surface；Cold water pipes before the control valve connection motor, the flow of the cold water for controlling cooling motor；Described PLC control system one end connects the temperature detection sensor, and the other end connects the control valve, and the temperature on the motor surface for being measured according to the temperature detection sensor adjusts the control valve, to control the flow of cold water.The utility model can prevent motor because of short circuit caused by condensed water, extend motor service life when motor is in and works normally or shut down, through precise control of temperature.
Description
Technical field
The utility model relates to technical field of motors, especially a kind of device and cooling system for preventing electric motor short circuit.
Background technique
ZL26A molding machine main motor in normal work, generates heat and can not give out in time since motor runs at high speed
It goes, heat is caused to gather, very high so as to cause motor surface temperature, motor originally uses the cooling system of cooling-water machine independence cooling supply
System, as shown in Figure 1, its working principle is that: cooling-water machine outlet provides a kind of (5-7 DEG C) of water at low temperature and cold water source is used as to cool down electricity
Machine.But water at low temperature causes motor surface there are condensed water, and condensed water causes biggish security risk to motor operation, close several
In the use process in year, there are multiple electric motors because condensed water leads to Damage by Short Circuit, shortened the service life of motor, increase
The spare part standing charges in workshop.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of device for preventing electric motor short circuit, which includes temperature detection
Sensor, control valve and PLC control system, in which: the temperature detection sensor is mounted on motor surface, for detecting motor
The temperature on surface；Cold water pipes before the control valve connection motor, the flow of the cold water for controlling cooling motor；It is described
PLC control system one end connects the temperature detection sensor, and the other end connects the control valve, for being examined according to the temperature
The temperature for surveying the motor surface that sensor measurement goes out adjusts the control valve, to control the flow of cold water.
Preferably, the temperature detection sensor is platinum resistance temperature sensor.
Preferably, the control valve is proportional control valve, and the proportional control valve includes proportion magnetic valve and flow valve.
Preferably, temperature value is set as needed in the PLC control system.
Preferably, which is circulating water flow control.
Preferably, the PLC control system has display screen, is used for displays temperature.
A kind of cooling system preventing electric motor short circuit, including sequentially connected cooling-water machine, distributor, motor and cold water pipe
Road, the cooling-water machine supply water at low temperature as cold water source, and the distributor is used to for water at low temperature to be supplied to the motor and need cold
But equipment, the system have the above-mentioned device for preventing electric motor short circuit.Preferably, control valve installation on the dispenser with
Save space.
The utility model can when motor is in and works normally or shut down, through precise control of temperature, prevent motor because
Short circuit caused by condensed water extends motor service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of original cooling system；
Fig. 2 is the structural schematic diagram of the cooling system of the utility model；
Fig. 3 is the control flow chart of the cooling system of the utility model.
Specific embodiment
As shown in Figure 1, being original cooling system equipment, cooling-water machine outlet provides a kind of water at low temperature (5-7 DEG C) conduct
Cold water source cools down motor.But water at low temperature causes motor surface there are condensed water, and condensed water causes motor operation biggish
Security risk has had multiple electric motors because condensed water leads to Damage by Short Circuit, has shortened motor in use process in recent years
Service life increases the spare part standing charges in workshop.
As shown in Fig. 2, the utility model develops the independently operated device for preventing electric motor short circuit, original cooling is compared
System, increases temperature detection sensor, proportional control valve, and PLC control system has entire cooling system and accurately recycles
Water flow control.
This prevents the temperature sensor of the device of electric motor short circuit to be mounted on motor surface, and proportioning valve is mounted on distributor, no
The device space is occupied, installation cooperation is compact, and maintenance and repair are convenient.Platinum resistance temperature sensor is using metal platinum in temperature
The characteristic that self-resistance value changes correspondingly when variation measures temperature, and the parameter interface of display screen can show the electricity of platinum resistance
Temperature value corresponding to resistance value.Due to the stability of characteristics of platinum, physics or chemical change will not be caused because of high/low temperature.Ratio
Control valve is composed of proportion magnetic valve and flow valve, and the hand adjustment device of throttle valve or speed governing valve is replaced with proportion magnetic valve,
Change the aperture of throttle valve with input electrical signal, thus the flow of regulating system.
The purpose of this utility model is realized by following control flow, as shown in figure 3, passing through the thermometric on motor surface
Sensor measures the real time temperature on motor surface.PLC control system can set temperature value be 20 DEG C, when motor surface temperature etc.
In 20 DEG C, PLC control system is not exported；When motor surface temperature is greater than 20 DEG C, PLC control system analog output, simultaneously
Control valve at cold water pipes is opened greatly in proportion；When motor surface temperature is less than 20 DEG C, PLC control system analog output,
The control valve at cold water pipes turns down in proportion simultaneously.Regardless of temperature be more than or less than 20 DEG C, proportional valve control flow until
Temperature reaches 20 DEG C, and movement stops.Pass through independent development programming Control program.Entire cooling system has accurately circulating water flow
Amount control.By observing test repeatedly, by the control of motor granule surface contral temperature at 20 DEG C, motor radiating is normal and frozen-free
Water generates.When temperature is not at 20 DEG C of setting value, PLC control system issues signal designation proportioning valve and makes corresponding movement, most
Temperature control is at 20 DEG C at last.
Claims (8)
1. a kind of device for preventing electric motor short circuit, which is characterized in that the device includes temperature detection sensor, control valve and PLC
Control system, in which:
The temperature detection sensor is mounted on motor surface, for detecting the temperature on motor surface；
Cold water pipes before the control valve connection motor, the flow of the cold water for controlling cooling motor；
Described PLC control system one end connects the temperature detection sensor, and the other end connects the control valve, for according to institute
The temperature for stating the motor surface that temperature detection sensor is measured adjusts the control valve, to control the flow of cold water.
2. the device according to claim 1 for preventing electric motor short circuit, which is characterized in that the temperature detection sensor is platinum
Resistance temperature sensor.
3. the device according to claim 1 for preventing electric motor short circuit, which is characterized in that the control valve is ratio control
Valve, the proportional control valve include proportion magnetic valve and flow valve.
4. the device according to claim 1 for preventing electric motor short circuit, which is characterized in that the PLC control system is according to need
Want set temperature value.
5. the device according to claim 1 for preventing electric motor short circuit, which is characterized in that the device is circulating water flow control
System.
6. the device according to claim 1 for preventing electric motor short circuit, which is characterized in that the PLC control system has aobvious
Display screen is used for displays temperature.
7. a kind of cooling system for preventing electric motor short circuit, including sequentially connected cooling-water machine, distributor, motor and cold water pipes,
The cooling-water machine supplies water at low temperature as cold water source, and the distributor is used to water at low temperature being supplied to the motor and need to cool down
Equipment, which is characterized in that the system has the device described in any one of claims 1-6 for preventing electric motor short circuit.
8. the cooling system according to claim 7 for preventing electric motor short circuit, the control valve are mounted on the distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454977.0U CN208782667U (en) | 2018-09-06 | 2018-09-06 | A kind of device and cooling system preventing electric motor short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454977.0U CN208782667U (en) | 2018-09-06 | 2018-09-06 | A kind of device and cooling system preventing electric motor short circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208782667U true CN208782667U (en) | 2019-04-23 |
Family
ID=66160020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821454977.0U Active CN208782667U (en) | 2018-09-06 | 2018-09-06 | A kind of device and cooling system preventing electric motor short circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208782667U (en) |
-
2018
- 2018-09-06 CN CN201821454977.0U patent/CN208782667U/en active Active
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