CN103187709A - Temperature protection and automatic control device for motor - Google Patents
Temperature protection and automatic control device for motor Download PDFInfo
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- CN103187709A CN103187709A CN2012100000642A CN201210000064A CN103187709A CN 103187709 A CN103187709 A CN 103187709A CN 2012100000642 A CN2012100000642 A CN 2012100000642A CN 201210000064 A CN201210000064 A CN 201210000064A CN 103187709 A CN103187709 A CN 103187709A
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- temperature
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- automatic control
- bearing
- winding
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Abstract
The invention discloses a device for automatically controlling a heating element of a motor by monitoring temperature of the motor. A stopping signal is sent if the temperature is over-limit, and audible and visible alarm is sounded. A programmable controller is used as a main controller; a platinum thermistor is used as a temperature measurement element; by temperature comparison, the heating element is controlled according to set parameters; and furthermore, six temperature values, namely temperature of a front bearing and a rear bearing, temperature of three groups of inner windings and external ambient temperature, are simultaneously detected and are displayed by a digital tube.
Description
Technical field
The present invention relates to the security protection of equipment Control Engineering motor, relate in particular to temperature and control automatically.
Background technology
At present, in the known Motor Control technology, at its temperature protection function, great majority only are sent to stator, the bearing temperature signal of motor in the integrated control system of complete equipment, when temperature surpasses regulation numerical value, realize protecting and stop.Because the field requirement of control system is strict; different places; need the different software and hardware of configuration; this just requires in the design process of control system; more intense flexibly, often can only adopt the collecting temperature signal, surpass the plain mode that regulation numerical value stops, particularly at high power motor so the form of motor temperature protection occurred; when adopting anti-condensation space heater, the demand of just can not the satisfied temperature protection controlling.At present, independent complete motor temperature protection automatic control equipment is less, and function singleness, can not satisfy the needs of motor security protection.
Summary of the invention
. goal of the invention:In the management of equipment maintenance process, the motor operating temperature is carried out monitoring, finish the control to anti-condensation space heater simultaneously, finish daily maintaining.
. technical solution
The present invention adopts Programmable Logic Controller as master control, utilize transducer to carry out signals collecting, master controller is according to internal processes and parameter, convert the voltage signal that receives to corresponding temperature signal, utilize transducer to send single-chip microcomputer to, single-chip microcomputer is handled the temperature signal that receives, and utilizes charactron to show, and according to temperature upper limit and the lower limit of corresponding setting, start heater and provide sound and light alarm, stop sign.Device can detect six temperature values such as showing forward and backward bearing temperature, three groups of inner winding temperatures and ambient temperature simultaneously.The electric control structure schematic diagram is as Fig. 1.
Input: bearing, stator temperature signal and ambient temperature signal.
Output: digital demonstration, sound and light alarm signal reach the switching value signal that leads to centralized control system and control condenser switch.
. technique effect
The heating precise control
After motor is out of service, stator winding temperature is compared with ambient temperature, when stator winding temperature is lower than ambient temperature, anti-condensation space heater begins heating, when winding temperature is higher than 5 ℃ of ambient temperatures, stop heating, winding temperature is remained at a little more than 5 ℃ of ambient temperatures; When motor moves, stop heating schedule.
The temperature monitoring monitoring is sensitive reliable
Under "on" position, show motor stator winding, front and back bearings temperature and ambient temperature all the time.When stator winding or bearing temperature surpass the regulation rated value, send stop sign to centralized control system or control switch, simultaneously sound and light alarm.
Safety, convenient
The function of safety protection of control circuit is complete, be active in one's movements reliable, and equipment volume is little, and Presentation Function is complete, and is easy and simple to handle.Prevented from making moist because of winding insulation, cause insulation resistance to reduce the damage that motor is caused, by the monitoring to winding and bearing temperature, the damage of having avoided temperature over-range that motor is caused, guarantee the safe operation of motor, improved the useful life of motor, reduced the motor fault rate, saved maintenance cost, significant to the daily maintenance of motor.
Four, the simple declaration of accompanying drawing and accompanying drawing
Accompanying drawing is electric control structure schematic diagram of the present invention and the concrete wiring schematic diagram of implementing.Accompanying drawing 1 is the electric control structure schematic diagram, and accompanying drawing 2 is heater winding diagrams, and accompanying drawing 3 is measuring temperature of bearing winding diagrams, and accompanying drawing 4 is stator winding thermometric winding diagrams.1-PLC; 2-AD module; 3-DA module; 4-sensor for measuring temperature of bearing; 5-stator temperature transducer; 6-transducer; 7-environment temperature transducer; 8-display; 9-single-chip microcomputer; 10-sound and light alarm; 11-condenser switch; 12-centralized control system; 13-front end; 14-rear end; 15-X1Y1Z1 working group; Standby group of 16-X2Y2Z2.
Five, embodiment
In December, 2010, according to 2 * 200kw that the Steel cord ribbon conveyer uses, model is YB2-315L
1-4 operation of motor, design is used.Adopt the FX2N of Mitsubishi-32MR Programmable Logic Controller 1 as master control, utilize platinum resistance thermometer sensor, 4,5 as temperature element, and send the voltage signal that collects to the PLC master controller, master controller is according to internal processes and parameter, convert the voltage signal that receives to corresponding temperature signal, Programmable Logic Controller 1 sends temperature signal to transducer 6(FX-4DA), utilize FX-4DA to send single-chip microcomputer 9 to, single-chip microcomputer 9 is handled the temperature signal that receives, utilize charactron 8 to show, and according to temperature upper limit and the lower limit of corresponding setting, start heater switch 11 and provide sound and light alarm 10, stop sign 12.Device can detect six temperature values such as showing forward and backward bearing temperature, three groups of inner winding temperatures and ambient temperature simultaneously.
Heater uses when motor quits work, and heats automatically when inner winding temperature is lower than ambient temperature, just stops to heat when inner winding temperature is higher than 5 ℃ of ambient temperatures.Motor when work heater is stopped using, and this moment, PLC detected forward and backward bearing temperature and winding temperature simultaneously, and when front and back bearings and inner winding had place's temperature to reach alarming value, control cabinet sent sound and light alarm.When if temperature continues to rise to higher limit, PLC provides stop sign immediately and sound and light alarm is reminded.
Anti-condensation space heater parameter is as follows:
Rated power: 400W
Rated voltage: 220V
Rated frequency: 50HZ
Bearing and stator temperature element are platinum resistance thermometer sensor, pt100, and output signal is voltage signal.Every end bearing arranges a bearing temperature element, is installed near the heating position, and each measuring temperature of bearing element has a thermometric terminal box, is installed on the fixed head of support side.The stator temperature element is embedded in the stator slot, goes up between the lower coil hot spot, and two of every phases, are wherein used three 15 standby three 16 by totally six.Winding diagram 2, Fig. 3, Fig. 4.Winding temperature is if surpass 10 ℃ of its class of insulation greatest limit temperature, and its insulation life will reduce half.The alarming value of stator temperature, bearing temperature and the strictness of shutdown value are set according to practical operation situation, add 5 ℃ respectively as alarming value under the situation of high ambient temperature and maximum load, add 10 ℃ as the shutdown value.
Arrange as follows:
Alarming value: 150 ℃ of stator temperatures, 90 ℃ of bearing temperatures.
Shutdown value: 155 ℃ of stator temperatures, 95 ℃ of bearing temperatures.
Claims (3)
1. motor temperature automatic control equipment can the monitoring motor temperature, and by temperature relatively, control motor heating element is characterized in that: timely monitor monitoring motor temperature, control the motor heating element automatically.
2. automatic control equipment according to claim 1 is characterized in that: dynamic monitoring monitoring motor and ambient temperature.
3. automatic control equipment according to claim 1 is characterized in that: the maintenance principle slightly higher 5 ℃ than ambient temperature according to electromotor winding temperature, accurately control temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100000642A CN103187709A (en) | 2012-01-01 | 2012-01-01 | Temperature protection and automatic control device for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100000642A CN103187709A (en) | 2012-01-01 | 2012-01-01 | Temperature protection and automatic control device for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103187709A true CN103187709A (en) | 2013-07-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100000642A Pending CN103187709A (en) | 2012-01-01 | 2012-01-01 | Temperature protection and automatic control device for motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN103187709A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864980A (en) * | 2014-05-19 | 2015-08-26 | 北汽福田汽车股份有限公司 | Motor stator temperature detection device and method, and temperature monitoring device and method |
| CN105676911A (en) * | 2016-04-19 | 2016-06-15 | 江苏华源防爆电机有限公司 | Fan motor temperature control system |
| CN106219407A (en) * | 2016-08-22 | 2016-12-14 | 江苏中建达丰机械工程有限公司 | Derrick crane drive system thermal detector |
| WO2019102591A1 (en) * | 2017-11-24 | 2019-05-31 | 三菱電機株式会社 | Rotating electric machine device and rotating electric machine device control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101615040A (en) * | 2009-07-22 | 2009-12-30 | 苏州新亚科技有限公司 | Temperature control system with contactor fault detect and control |
| CN101751047A (en) * | 2008-12-03 | 2010-06-23 | 王静爽 | Shutdown temperature energy-saving control and protection method of motor |
| US20100156338A1 (en) * | 2008-12-22 | 2010-06-24 | Bin Lu | System and method for monitoring and controlling stator winding temperature in a de-energized ac motor |
| CN201881637U (en) * | 2010-12-10 | 2011-06-29 | 漯河双汇彩印包装有限公司 | Safety device for heating drying oven |
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2012
- 2012-01-01 CN CN2012100000642A patent/CN103187709A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751047A (en) * | 2008-12-03 | 2010-06-23 | 王静爽 | Shutdown temperature energy-saving control and protection method of motor |
| US20100156338A1 (en) * | 2008-12-22 | 2010-06-24 | Bin Lu | System and method for monitoring and controlling stator winding temperature in a de-energized ac motor |
| CN101615040A (en) * | 2009-07-22 | 2009-12-30 | 苏州新亚科技有限公司 | Temperature control system with contactor fault detect and control |
| CN201881637U (en) * | 2010-12-10 | 2011-06-29 | 漯河双汇彩印包装有限公司 | Safety device for heating drying oven |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864980A (en) * | 2014-05-19 | 2015-08-26 | 北汽福田汽车股份有限公司 | Motor stator temperature detection device and method, and temperature monitoring device and method |
| CN104864980B (en) * | 2014-05-19 | 2019-03-12 | 北京宝沃汽车有限公司 | A kind of motor stator temperature detection device and method, device for monitoring temperature and method |
| CN105676911A (en) * | 2016-04-19 | 2016-06-15 | 江苏华源防爆电机有限公司 | Fan motor temperature control system |
| CN106219407A (en) * | 2016-08-22 | 2016-12-14 | 江苏中建达丰机械工程有限公司 | Derrick crane drive system thermal detector |
| WO2019102591A1 (en) * | 2017-11-24 | 2019-05-31 | 三菱電機株式会社 | Rotating electric machine device and rotating electric machine device control method |
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Application publication date: 20130703 |