CN205407512U - Motor heating device - Google Patents
Motor heating device Download PDFInfo
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- CN205407512U CN205407512U CN201620248947.9U CN201620248947U CN205407512U CN 205407512 U CN205407512 U CN 205407512U CN 201620248947 U CN201620248947 U CN 201620248947U CN 205407512 U CN205407512 U CN 205407512U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 65
- 210000000038 chest Anatomy 0.000 claims abstract description 69
- 238000009434 installation Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model relates to a motor heating field discloses a motor heating device, and the device includes: the heater, temperature detecting element for detect interior temperature of motor thorax and the outer temperature of motor thorax, the control unit is used for calculating in the motor thorax temperature with the temperature difference of the outer temperature of motor thorax, and judge whether the temperature difference is less than first default, and the temperature difference is less than under the condition of first default, control the heater heats in to the motor thorax, and judges whether the temperature difference is greater than the second default, and the temperature difference is greater than under the condition of second default, control the heater stops rightly heat in the motor thorax, wherein, first default is less than the second default. The motor heating device that provides through above -mentioned technical scheme can self -adaptation changes in ambient temperature, can make under heater temperature in the motor thorax is higher than the circumstances of a temperature default outside the motor thorax, not to heating in the motor thorax to reach the mesh of energy saving and cost.
Description
Technical field
This utility model relates to motor heating field, in particular it relates to a kind of motor heating device.
Background technology
The typical control philosophy (as shown in Figure 1) of motor heating device is: during motor heating fling-cut switch HSU Guan Bi, 1) when electric power switch 001JA is when operating position, main power switch 001JA-1 closes, its auxiliary normally closed contact 001JA-2 opens, now, motor heating controls loop and disconnects, and catalyst 002JA coil losing electricity, motor heating device is out of service；Main power switch 001JA-1 disconnects, and it assists normally closed node 001JA-2 Guan Bi, and motor heating controls loop and connects, and catalyst 002JA coil is charged, and motor heating device puts into operation through main contact 002JA-1；2) when electric power switch 001JA is when off-position, position contact ZS001 closes, and motor heating controls loop and connects, and catalyst 002JA coil is charged, and motor heating device puts into operation through main contact 002JA-1.
The skilled addressee will appreciate that and be, motor can produce substantial amounts of heat in running, these heats can make temperature in motor thorax be higher than the outer temperature of motor thorax within a period of time, to guarantee that the coil in motor thorax does not make moist, and the motor heating device designed according to the typical control philosophy of above-mentioned motor heating device, when motor heating fling-cut switch HSU closes, as long as motor is in stoppage in transit state, then motor heating device is at the heated condition of charging operation, namely motor heating device temperature in motor thorax is still heated in motor thorax when temperature more than outside motor thorax, not only cause energy waste, further increase production cost.
Utility model content
The purpose of this utility model is to provide a kind of motor heating device, temperature no longer can be heated in motor thorax when temperature one preset value higher than outside motor thorax by this motor heating device in motor thorax, to reach to save the purpose of the energy and cost.
To achieve these goals, this utility model provides a kind of motor heating device, and this device includes: heater；Temperature detecting unit, is used for detecting in motor thorax temperature and the outer temperature of motor thorax；Control unit, for calculating the temperature difference of temperature and the outer temperature of described motor thorax in described motor thorax, and judge that whether described temperature difference is less than the first preset value, and when described temperature difference is less than described first preset value, control described heater to be heated in motor thorax, and judge that whether described temperature difference is more than the second preset value, and when described temperature difference is more than described second preset value, control described heater to stop being heated in described motor thorax, wherein, described first preset value is less than described second preset value.
Preferably, described device also includes alarm unit；Described control unit is additionally operable to judge that whether described temperature difference is less than the 3rd preset value, and when described temperature difference is less than described three preset value, controls described alarm unit and report to the police, and wherein, described 3rd preset value is less than described first preset value.
Preferably, described temperature detecting unit includes the standby stator coil detector unit that motor is reserved, and this standby stator coil detector unit is used for detecting temperature in described motor thorax.
Preferably described device also includes I/O expanding element；Described control unit is additionally operable to be controlled the start and stop of one or more described heaters by described I/O expanding element.
Preferably, described control unit also includes communication interface unit, for access to remote monitoring system.
Preferably, described long distance control system is energy management system or Distributed Control System.
Preferably, the power supply of described heater can provide via the electrical load dish of motor installation site on the spot.
Pass through technique scheme, the temperature in motor thorax of the heater in motor heating device can be made no longer to be heated in motor thorax when temperature one preset value higher than outside motor thorax, to reduce the working time of heater, thus reaching to save the purpose of the energy and cost.
Other features and advantages of the utility model will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, but is not intended that restriction of the present utility model together with detailed description below.In the accompanying drawings:
Fig. 1 is the typical control philosophy figure of motor heating device；
Fig. 2 is the motor heating device schematic diagram according to an embodiment of the present utility model；
Fig. 3 is the motor heating schematic diagram according to an embodiment of the present utility model；
Fig. 4 is temperature and current of electric versus time curve in motor thorax in certain power plant's coal-grinding motor shutdown process.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains this utility model, it is not limited to this utility model.
In order to make motor heating device temperature in motor thorax not be heated in motor thorax when temperature (i.e. ambient temperature) preset value higher than outside motor thorax, to reach to save the purpose of the energy and cost, this utility model provides a kind of motor heating device, and this device includes: heater；Temperature detecting unit, is used for detecting in motor thorax temperature and the outer temperature of motor thorax；Control unit, for calculating the temperature difference of temperature and the outer temperature of motor thorax in motor thorax, and judge that whether temperature difference is less than the first preset value, and when temperature difference is less than the first preset value, controls heater and be heated in motor thorax, and judge that whether temperature difference is more than the second preset value, and when temperature difference is more than the second preset value, controlling heater to stop being heated in motor thorax, wherein, the first preset value is less than the second preset value.
Fig. 2 is the motor heating device schematic diagram according to an embodiment of the present utility model, and Fig. 3 is the motor heating schematic diagram corresponding with the motor heating device shown in Fig. 2.In this embodiment, the control unit in motor heating device can be passed through I/O expanding element and control the start and stop of one or more heaters, and these one or more heaters can for being heated in the thorax of one or more motor.This motor heating device includes total power switch Q, the heating power supply switch Q1～Qn of motor 1～motor n, control voltage switch QF, heater 5, temperature detecting unit 6 and control unit.Wherein, temperature detecting unit 6 includes the standby stator coil detector unit that motor is reserved, and this standby stator coil detector unit is used for detecting temperature in motor thorax；Control unit includes power panel 1, input-output unit 2, interface relays 3, processing unit 4, normal opened contact K1-1b, catalyst Km1-1, main noddle on contactor Km1-2, normal opened contact K1-2b etc..Power panel 1 is for providing working power for input-output unit 2, interface relays 3 and processing unit 4.Input-output unit 2 is used for inputting and export control signal, temperature analog signal, failure alarm signal etc..After the heating power supply of total power switch Q, motor 1～motor n switchs Q1～Qn and controls voltage switch QF Guan Bi, motor heating device puts into automatic running status.Below for motor 1, the automatic running of detailed description motor heating device: temperature detecting unit 6 detects the temperature outer with motor thorax of temperature in motor thorax automatically, and outer to temperature in the motor thorax detected and motor thorax temperature is sent to processing unit 4, processing unit 4 calculates and obtains the temperature difference of temperature and the outer temperature of motor thorax in motor thorax, and this temperature difference is compared with the first preset value and the second preset value；In this temperature difference less than the first preset value (such as 20 DEG C, but it is not limited to this) when, coil in relay K 1-1a is charged, its normal opened contact K1-1b closes, coil electricity in catalyst Km1-1, main noddle on contactor Km1-2 closes, now, R1 (i.e. the heater of motor 1) in heater 5 puts into running status, to be heated in motor 1 thorax；In the process being heated in R1 is to motor 1 thorax, said temperature difference constantly increases, when this temperature difference more than the second preset value (such as 30 DEG C, but it is not limited to this) time, the coil losing electricity in relay K 1-1a, its normal opened contact K1-1b opens, coil blackout in catalyst Km1-1, main noddle on contactor Km1-2 disconnects, and now, the heater R1 of motor 1 is out of service.
Preferably, motor heating device also includes alarm unit；Control unit is additionally operable to judge that whether said temperature difference is less than the 3rd preset value, and when this temperature difference is less than three preset values, controls alarm unit and report to the police, and wherein, the 3rd preset value is less than the first preset value.It will be appreciated by those skilled in the art that when motor heating device breaks down, in fact it could happen that the situation of heater cisco unity malfunction so that in motor thorax, temperature is too low.In order to prevent the generation of above-mentioned condition, 3rd preset value can be set, when said temperature difference less than the 3rd preset value (such as 5 DEG C, but it is not limited to this) time, the coil in relay K 1-2a is charged, and its normal opened contact K1-2b closes, to connect alarm unit (such as display lamp BD1, but it is not limited to this) report to the police, remind staff's motor heating device to occur in that fault, enable staff to make corresponding process in time.
For the ease of observing the running status of motor heating device, it is also possible to arrange run indicator HD1 and stop display lamp LD1.Heater in motor heating device is under the situation of halted state, and the auxiliary normally closed contact Km1-4 of the catalyst Km1-1 in Fig. 3 is closed, and stops display lamp LD1 and starts luminescence；Heater in motor heating device is in running order, the auxiliary normally closed contact Km1-4 of the catalyst Km1-1 in Fig. 3 opens, and auxiliary normal opened contact Km1-3 closes, and stops display lamp LD1 and stops luminescence, and run indicator HD1 starts luminescence.In addition, it is necessary to illustrate, the total power switch Q in Fig. 3 can be electric leakage interrupter, when electric leakage occurs motor heating device, can automatically disconnect total power switch Q.The fault disjunction warning contact that switch SD1～SDn is heating power supply switch Q1～Qn in Fig. 3, can when the heater power source switch of a certain or multiple electric motors breaks down disjunction, it is provided that the fault alarm distant place instruction of this one or more motor heating device.
Preferably, control unit also includes communication interface unit, and for access to remote monitoring system, this long distance control system can be energy management system or Distributed Control System.By this optimal way, staff can monitor temperature and the outer temperature of motor thorax in the motor thorax that temperature detecting unit detects by long distance control system, and remotely controls the start and stop of heater according to the temperature difference of temperature outside temperature in motor thorax and motor thorax.Simultaneously, this long distance control system can also show the running status of motor heating device, and report to the police when motor heating device breaks down, in order to staff checks the running status of motor heating device at any time and carries out inspection and maintenance when motor heating device breaks down in time.
The motor heating device designed due to the typical control philosophy of the motor heating according to Fig. 1, the cable with motor power is needed to lay the heating power supply power cable installing motor heating device together or control cable, wherein, cable is controlled for controlling the start and stop of motor heating device.For installation site from electric power switch cabinet motor farther out, the heating power supply power cable of laying or control cable costly.And by the motor heating device that this utility model provides, owing to can be controlled the start and stop of heater according to the temperature difference received by control unit, therefore, it can save the installation controlling cable；Meanwhile, the power supply of the heater in the motor heating device that this utility model provides can provide via the electrical load dish of motor installation site on the spot, therefore, it is possible to save the installation of more heating power supply power cable.Therefore, the motor heating device that this utility model provides can greatly reduce initial investment cost.
Fig. 4 is temperature and current of electric versus time curve in motor thorax in certain power plant's coal-grinding motor shutdown process.From fig. 4, it can be seen that when motor brings into operation, in motor thorax, the rising edge of temperature is more precipitous, when motor is out of service, in motor thorax, the trailing edge of temperature is shallower.Measured, motor is after out of service, and the temperature in motor thorax drops to 50 DEG C and takes around 18 hours.As long as because higher than the temperature outside motor thorax, namely the temperature in motor thorax can ensure that motor coil does not make moist, therefore, in normal operating conditions, during this period of time there is no need to make heater in running order.Under power plant's normal load condition, these motor day start and stop about 9 times, the operation time of each start and stop and idle time are roughly equal.If adopting the motor heating device that this utility model provides, then can by judging that in motor thorax, the temperature difference of temperature and the outer temperature of motor thorax determines the start and stop state of the heater in motor heating device, so, when in motor thorax, temperature exceeds certain value (such as 20 DEG C) than ambient temperature (general annual is less than 20 DEG C), then heater can be constantly in run-stopping status.If the power of this heater is 1.2kW, then, can economize on electricity every day 14.4kWh.If unit year running the time is 5000 hours, then year economize on electricity is 3000kWh, power cost saving about 1200 yuan.
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing; but; this utility model is not limited to the detail in above-mentioned embodiment; in technology concept of the present utility model; the technical solution of the utility model can being carried out multiple simple variant, these simple variant belong to protection domain of the present utility model.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode.In order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by this utility model separately.
Additionally, can also carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (7)
1. a motor heating device, it is characterised in that this device includes:
Heater；
Temperature detecting unit, is used for detecting in motor thorax temperature and the outer temperature of motor thorax；
Control unit, for calculating the temperature difference of temperature and the outer temperature of described motor thorax in described motor thorax, and judge that whether described temperature difference is less than the first preset value, and when described temperature difference is less than described first preset value, control described heater to be heated in motor thorax, and judge that whether described temperature difference is more than the second preset value, and when described temperature difference is more than described second preset value, control described heater to stop being heated in described motor thorax, wherein, described first preset value is less than described second preset value.
2. device according to claim 1, it is characterised in that
Described device also includes alarm unit；
Described control unit is additionally operable to judge that whether described temperature difference is less than the 3rd preset value, and when described temperature difference is less than described three preset value, controls described alarm unit and report to the police, and wherein, described 3rd preset value is less than described first preset value.
3. device according to claim 1 and 2, it is characterised in that described temperature detecting unit includes the standby stator coil detector unit that motor is reserved, and this standby stator coil detector unit is used for detecting temperature in described motor thorax.
4. device according to claim 1, it is characterised in that
Described device also includes I/O expanding element；
Described control unit is additionally operable to be controlled the start and stop of one or more described heaters by described I/O expanding element.
5. device according to claim 1, it is characterised in that described control unit also includes communication interface unit, for access to remote monitoring system.
6. device according to claim 5, it is characterised in that described long distance control system is energy management system or Distributed Control System.
7. device according to claim 1, it is characterised in that the power supply of described heater can provide via the electrical load dish of motor installation site on the spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620248947.9U CN205407512U (en) | 2016-03-29 | 2016-03-29 | Motor heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620248947.9U CN205407512U (en) | 2016-03-29 | 2016-03-29 | Motor heating device |
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| Publication Number | Publication Date |
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| CN205407512U true CN205407512U (en) | 2016-07-27 |
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| CN201620248947.9U Active CN205407512U (en) | 2016-03-29 | 2016-03-29 | Motor heating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452194A (en) * | 2016-11-04 | 2017-02-22 | 深圳市道通智能航空技术有限公司 | Method, device and system for heating motors |
| WO2020142958A1 (en) * | 2019-01-09 | 2020-07-16 | 深圳市大疆创新科技有限公司 | Motor control method, range sensor, and movable platform |
| CN111490478A (en) * | 2020-02-12 | 2020-08-04 | 贵州振华群英电器有限公司（国营第八九一厂） | Standard machine box type intelligent comprehensive power distribution structure |
-
2016
- 2016-03-29 CN CN201620248947.9U patent/CN205407512U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452194A (en) * | 2016-11-04 | 2017-02-22 | 深圳市道通智能航空技术有限公司 | Method, device and system for heating motors |
| WO2018082579A1 (en) * | 2016-11-04 | 2018-05-11 | 深圳市道通智能航空技术有限公司 | Motor heating method, device and system |
| WO2020142958A1 (en) * | 2019-01-09 | 2020-07-16 | 深圳市大疆创新科技有限公司 | Motor control method, range sensor, and movable platform |
| CN112106291A (en) * | 2019-01-09 | 2020-12-18 | 深圳市大疆创新科技有限公司 | Motor control method, distance sensor and mobile platform |
| CN111490478A (en) * | 2020-02-12 | 2020-08-04 | 贵州振华群英电器有限公司（国营第八九一厂） | Standard machine box type intelligent comprehensive power distribution structure |
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