CN107065964A - A kind of power distribution cabinet intelligent cooling control system - Google Patents
A kind of power distribution cabinet intelligent cooling control system Download PDFInfo
- Publication number
- CN107065964A CN107065964A CN201611244450.0A CN201611244450A CN107065964A CN 107065964 A CN107065964 A CN 107065964A CN 201611244450 A CN201611244450 A CN 201611244450A CN 107065964 A CN107065964 A CN 107065964A
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- China
- Prior art keywords
- power distribution
- distribution cabinet
- reducing unit
- temperature
- temperature reducing
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a kind of power distribution cabinet intelligent cooling control system；Temperature collecting cell is used to gather power distribution cabinet internal temperature T；Top temperature reducing unit is at the top of power distribution cabinet, for cooling to power distribution cabinet inside；Sidepiece temperature reducing unit is on four sides inside power distribution cabinet, for cooling to power distribution cabinet inside；Bottom temperature reducing unit is located at power distribution cabinet bottom, for cooling to power distribution cabinet inside；Control unit, is communicated to connect with temperature collecting cell, top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit；Control unit obtains power distribution cabinet internal temperature T by temperature collecting cell, and T is compared with preset temperature value, and is acted according to comparative result instruction control top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit.
Description
Technical field
The present invention relates to power distribution cabinet field of intelligent control technology, more particularly to a kind of power distribution cabinet intelligent cooling control system.
Background technology
Power distribution cabinet is the final stage device of conventional distribution system, and power distribution cabinet is to be processed by steel matter for protecting first device
The cupboard of part normal work.Power distribution cabinet making material is generally divided into two kinds of hot rolled steel plate and cold-rolled steel sheet.Cold-rolled steel sheet relative thermal
Rolled steel plate more material is soft, is more suitable for the making of regulator cubicle.Power distribution cabinet is widely used to be mainly used in chemical industry, environmental protection industry (epi),
Power system, metallurgical system, industry, nuclear power industry, security against fire monitoring, transportation industry etc..
In use, its internal component can generate heat power distribution cabinet, raise cabinet body temperature, hold when temperature is too high
Normal use and the service life of its internal component are easily influenceed, therefore, being designed with radiator structure on power distribution cabinet, is usually existed
Ventilating opening or ventilation shutter are set on power distribution cabinet, and some power distribution cabinets can set fan in ventilating opening, make power distribution cabinet using fan
Interior air-flow changes, and improves radiating efficiency.But it is due to that temperature changes often in power distribution cabinet, when distribution in-cabinet temperature is relatively low
Still cooling operation is taken to cause the waste of resource, also, cooling system easily causes damage long lasting for work, therefore
Need to design a kind of system of specific aim reduction power distribution cabinet internal temperature to power distribution cabinet internal temperature progress intelligent control.
The content of the invention
The technical problem existed based on background technology, the present invention proposes a kind of power distribution cabinet intelligent cooling control system.
Power distribution cabinet intelligent cooling control system proposed by the present invention, including：
Temperature collecting cell, for gathering power distribution cabinet internal temperature T；
Top temperature reducing unit, at the top of power distribution cabinet, for cooling to power distribution cabinet inside；
On sidepiece temperature reducing unit, four sides inside power distribution cabinet, for cooling to power distribution cabinet inside；
Bottom temperature reducing unit, located at power distribution cabinet bottom, for cooling to power distribution cabinet inside；
Control unit, with temperature collecting cell, top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit communication link
Connect；
Control unit obtains power distribution cabinet internal temperature T by temperature collecting cell, and T is compared with preset temperature value
Compared with, and acted according to comparative result instruction control top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit.
Preferably, the first temperature value T is preset with control unit1, second temperature value T2, wherein, T1<T2；
As T >=T1When, control unit instruction control top temperature reducing unit, the action of bottom temperature reducing unit cool top single
Member and bottom temperature reducing unit are adjusted to working condition, until T≤aT1When, control unit instruction control top temperature reducing unit, sidepiece
Temperature reducing unit, the action of bottom temperature reducing unit, are adjusted to halted state by top temperature reducing unit and bottom temperature reducing unit, drop sidepiece
Warm unit is adjusted to working condition, until T≤bT1When, control unit instruction control top temperature reducing unit, sidepiece temperature reducing unit,
Bottom temperature reducing unit action, halted state is adjusted to by top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit；
As T >=T2When, sidepiece temperature reducing unit is adjusted to work shape by control unit instruction control sidepiece temperature reducing unit action
State, until T≤cT2When, control unit instruction control top temperature reducing unit, sidepiece temperature reducing unit, the action of bottom temperature reducing unit will
Top temperature reducing unit and bottom temperature reducing unit are adjusted to working condition, sidepiece temperature reducing unit are adjusted into halted state；
Wherein, 0<b<a<1, T1/T2<c<1。
Preferably, the temperature collecting cell includes n temperature collect module, and n temperature collect module is used to collection
Power distribution cabinet internal temperature, any one temperature collect module at least includes an infrared temperature sensor.
Preferably, in addition to prewarning unit, prewarning unit is communicated to connect with control unit and according to the instruction of control unit
Carry out early warning；
Maximum temperature value T is preset with control unitmax；
Control unit obtains power distribution cabinet internal temperature T by temperature collecting cell, as T >=TmaxWhen, control unit is to early warning
Unit sends instruction.
Preferably, the prewarning unit uses audible-visual annunciator.
Preferably, it is provided with the top of power distribution cabinet on multiple steam vents, and any one steam vent and is equipped with screen pack.
Preferably, power distribution cabinet bottom is provided with multiple steam vents, and any one steam vent and is equipped with screen pack.
Preferably, four side walls of power distribution cabinet are provided with multiple steam vents, and any one steam vent and are equipped with screen pack.
Detection power distribution cabinet internal temperature in real time of the invention, and select different according to the practical range of values of power distribution cabinet internal temperature
Temperature reducing unit power distribution cabinet inside is cooled；Specifically：When power distribution cabinet internal temperature is higher, quick reduction is now needed
Power distribution cabinet internal temperature, it is contemplated that each component is arranged on the medium position of power distribution cabinet in power distribution cabinet, therefore inside power distribution cabinet
Power distribution cabinet inside is cooled using sidepiece temperature reducing unit first in the case that temperature is higher, made facing each other in power distribution cabinet
Gas circulating flow is realized between the wall of side, accelerates the flowing velocity of gas between side wall facing each other in power distribution cabinet so that power distribution cabinet
The temperature that interior each component work is produced is reduced as gas circulates, and reaches the purpose of reduction power distribution cabinet internal temperature；When with
When the electric higher degree of cabinet internal temperature is relatively low, top temperature reducing unit and bottom temperature reducing unit are now adjusted to work shape simultaneously
State, under such a cooling mode, top temperature reducing unit and bottom temperature reducing unit realize gaseous exchange, promote empty in power distribution cabinet
The flowing up and down of gas, is conducive to gas discharge in power distribution cabinet taking away the high temperature in power distribution cabinet to reduce power distribution cabinet internal temperature,
Until when power distribution cabinet internal temperature is reduced to particular temperature value, then switching sidepiece temperature reducing unit startup work and coming in power distribution cabinet
Portion is cooled, and sidepiece temperature reducing unit is on four sides inside power distribution cabinet, in this way, side facing each other can be achieved
Gaseous exchange, accelerates the gas flowing frequency inside power distribution cabinet, is within a short period of time reduced to power distribution cabinet internal temperature suitably
In the range of.
In this way, using the cyclic switching of sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit come to power distribution cabinet
Inside is cooled, and is not only increased the specific aim of cooling, is accelerated the flowing of gas in power distribution cabinet using gaseous exchange characteristic
Speed reduces power distribution cabinet internal temperature, and makes sidepiece temperature reducing unit, top temperature reducing unit and the bottom temperature reducing unit intermittent
Work and stopping so that sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit are stopped again after a period of operation
Breath a period of time, it is to avoid sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit continuous firing break down, in extension
The saving of resource is realized on the basis of sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit service life.
Brief description of the drawings
Fig. 1 is a kind of structural representation of power distribution cabinet intelligent cooling control system.
Embodiment
As shown in figure 1, Fig. 1 is a kind of power distribution cabinet intelligent cooling control system proposed by the present invention.
Reference picture 1, power distribution cabinet intelligent cooling control system proposed by the present invention, including：
Temperature collecting cell, for gathering power distribution cabinet internal temperature T；The temperature collecting cell includes n temperature acquisition
Module, n temperature collect module is used to gather power distribution cabinet internal temperature, and any one temperature collect module is at least red including one
Outer temperature sensor, then the collection value of any one temperature collect module is the collection value of all infrared temperature sensors in the module
Average value；Power distribution cabinet internal temperature is gathered using multiple infrared temperature sensors and multiple temperature collect modules, can be complete
The temperature of diverse location in face collection power distribution cabinet, it is ensured that the accuracy of temperature acquisition, and the acquisition precision of infrared temperature sensor
High, sensitivity is high, the reaction time is fast, is conducive to further improving the accuracy for gathering power distribution cabinet internal temperature, single for control
Meta analysis power distribution cabinet internal temperature provides accurate reference frame.
Top temperature reducing unit, at the top of power distribution cabinet, for cooling to power distribution cabinet inside；
On sidepiece temperature reducing unit, four sides inside power distribution cabinet, for cooling to power distribution cabinet inside；
Bottom temperature reducing unit, located at power distribution cabinet bottom, for cooling to power distribution cabinet inside；
In actual moving process, top temperature reducing unit and bottom temperature reducing unit start simultaneously at work or while stop work
Make, be arranged such, the flowing velocity up and down of power distribution cabinet internal gas can be strengthened so that power distribution cabinet internal temperature is inside power distribution cabinet
It can quickly be reduced in the case that gas flow rates are fast, reach the purpose of cooling；
Sidepiece temperature reducing unit includes four cooling modules, and four cooling modules are respectively arranged on four side walls inside power distribution cabinet
On, in this way, when sidepiece temperature reducing unit works, the cooling module in two two opposite side walls can realize gaseous exchange, pass through gas
Body convection current can accelerate the flowing velocity of power distribution cabinet internal gas, to reach the purpose of reduction power distribution cabinet internal temperature.
Control unit, with temperature collecting cell, top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit communication link
Connect；
Control unit obtains power distribution cabinet internal temperature T by temperature collecting cell, and T is compared with preset temperature value
Compared with, and acted according to comparative result instruction control top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit.
Specifically：The first temperature value T is preset with control unit1, second temperature value T2, wherein, T1<T2；
As T >=T1When, show power distribution cabinet internal temperature more than the first temperature value, temperature drift degree is smaller in the case of this,
Then control unit instruction control top temperature reducing unit, the action of bottom temperature reducing unit, by top temperature reducing unit and bottom temperature reducing unit
Working condition is adjusted to, is realized and is flowed above and below power distribution cabinet internal gas using top temperature reducing unit and bottom temperature reducing unit, passed through
The high temperature in power distribution cabinet is taken away in flowing above and below power distribution cabinet internal gas, until T≤aT1When, show that power distribution cabinet internal temperature is dropped
As little as one preset value, now control unit instruction control top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit are moved
Make, top temperature reducing unit and bottom temperature reducing unit are adjusted to halted state, sidepiece temperature reducing unit is adjusted to working condition, profit
Power distribution cabinet inside is cooled with sidepiece temperature reducing unit, power distribution cabinet internal gas can be made to realize the flowing of horizontal direction, reached
The purpose of power distribution cabinet internal temperature is reduced, while top temperature reducing unit and bottom temperature reducing unit are in sidepiece temperature reducing unit startup work
When can rest a period of time, it is to avoid top temperature reducing unit and bottom temperature reducing unit continuous firing cause damage and influence cooling effect
Really, until T≤bT1When, show that power distribution cabinet internal temperature is reduced to controlled range, now control unit instruction control top drops
Warm unit, sidepiece temperature reducing unit, the action of bottom temperature reducing unit, by top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit
Halted state is adjusted to, the purpose for saving the energy is realized；
As T >=T2When, show that power distribution cabinet internal temperature is higher, now need quickly to reduce power distribution cabinet internal temperature, due to
Inside power distribution cabinet in the middle part of the closer power distribution cabinet of the installation site of each component, therefore first using sidepiece temperature reducing unit to power distribution cabinet
Inside is cooled, i.e. control unit instruction control sidepiece temperature reducing unit action, and sidepiece temperature reducing unit is adjusted into working condition,
The gas on power distribution cabinet inner horizontal direction is set fully to flow to take away the high temperature produced when each component works inside power distribution cabinet,
Be conducive within a short period of time reducing power distribution cabinet internal temperature, until T≤cT2When, show that power distribution cabinet internal temperature is lowered,
Now changeable top temperature reducing unit and bottom temperature reducing unit are operated, i.e., control unit instruction control top temperature reducing unit,
Sidepiece temperature reducing unit, the action of bottom temperature reducing unit, working condition is adjusted to, by side by top temperature reducing unit and bottom temperature reducing unit
Portion's temperature reducing unit is adjusted to halted state so that the gas flowing of above-below direction is realized inside power distribution cabinet, while making sidepiece cool
Unit is rested；In this way, being switched over using two kinds of cooling modes, not only increase reduces to power distribution cabinet internal temperature
Specific aim, while enabling top temperature reducing unit and bottom temperature reducing unit and sidepiece temperature reducing unit to be rested, it is to avoid
Top temperature reducing unit and bottom temperature reducing unit and sidepiece temperature reducing unit consume serious under continuous firing state and influence the life-span,
The replacement frequency of three temperature reducing units is reduced, and has saved the replacement cost of three temperature reducing units.
Wherein, 0<b<a<1, T1/T2<c<1。
Also include prewarning unit in present embodiment, prewarning unit is communicated to connect with control unit and according to control unit
Instruction carries out early warning；
Maximum temperature value T is preset with control unitmax；
Control unit obtains power distribution cabinet internal temperature T by temperature collecting cell, as T >=TmaxWhen, show inside power distribution cabinet
Actual temperature is higher than maximum temperature value, now there may be abnormal conditions, control unit sends instruction, early warning list to prewarning unit
Member carries out early warning according to the instruction of control unit, to remind relevant staff to notice the high-temperature condition inside power distribution cabinet；
The prewarning unit uses audible-visual annunciator, can give above-mentioned related personnel in terms of vision and the sense of hearing two to stimulate, improve early warning
The prompting effect of unit.
Preferably, it is provided with the top of power distribution cabinet on multiple steam vents, and any one steam vent and is equipped with screen pack；Power distribution cabinet bottom
Portion is provided with multiple steam vents, and any one steam vent and is equipped with screen pack；Four side walls of power distribution cabinet are provided with multiple steam vents,
And it is equipped with screen pack on any one steam vent；In this way, in top temperature reducing unit and bottom temperature reducing unit startup work, distribution
Gas inside cabinet carries out the flowing of above-below direction, and gas can pass through multiple steam vents at the top of power distribution cabinet and power distribution cabinet bottom
Multiple steam vents discharge, to take away the high temperature inside power distribution cabinet；When sidepiece temperature reducing unit works, the gas inside power distribution cabinet
Flowed in the horizontal direction, the gas of flowing can be discharged by multiple steam vents on four side walls of power distribution cabinet, to take away
Power distribution cabinet internal high temperature, is further improved to the cooling-down effect inside power distribution cabinet.
Present embodiment detects power distribution cabinet internal temperature in real time, and is selected according to the practical range of values of power distribution cabinet internal temperature
Different temperature reducing units cools to power distribution cabinet inside；Specifically：When power distribution cabinet internal temperature is higher, now need quick
Reduce power distribution cabinet internal temperature, it is contemplated that each component is arranged on the medium position of power distribution cabinet in power distribution cabinet, therefore in power distribution cabinet
Power distribution cabinet inside is cooled using sidepiece temperature reducing unit first in the case that internal temperature is higher, makes two two-phase in power distribution cabinet
Side wall realize gas circulating flow, accelerate the flowing velocity of gas between side wall facing each other in power distribution cabinet so that match somebody with somebody
The temperature that each component work is produced in electric cabinet is reduced as gas circulates, and reaches the purpose of reduction power distribution cabinet internal temperature；
When the higher degree of power distribution cabinet internal temperature is relatively low, top temperature reducing unit and bottom temperature reducing unit are now adjusted to work simultaneously
State, under such a cooling mode, top temperature reducing unit and bottom temperature reducing unit realize gaseous exchange, promote in power distribution cabinet
The flowing up and down of air, is conducive to taking away the high temperature in power distribution cabinet to reduce temperature inside power distribution cabinet by gas discharge in power distribution cabinet
Degree, until when power distribution cabinet internal temperature is reduced to particular temperature value, then switching sidepiece temperature reducing unit startup work and coming to distribution
Cooled inside cabinet, and sidepiece temperature reducing unit is on four sides inside power distribution cabinet, in this way, side facing each other can
Gaseous exchange is realized, accelerates the gas flowing frequency inside power distribution cabinet, is within a short period of time reduced to power distribution cabinet internal temperature
In optimum range.
In this way, using the cyclic switching of sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit come to power distribution cabinet
Inside is cooled, and is not only increased the specific aim of cooling, is accelerated the flowing of gas in power distribution cabinet using gaseous exchange characteristic
Speed reduces power distribution cabinet internal temperature, and makes sidepiece temperature reducing unit, top temperature reducing unit and the bottom temperature reducing unit intermittent
Work and stopping so that sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit are stopped again after a period of operation
Breath a period of time, it is to avoid sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit continuous firing break down, in extension
The saving of resource is realized on the basis of sidepiece temperature reducing unit, top temperature reducing unit and bottom temperature reducing unit service life.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of power distribution cabinet intelligent cooling control system, it is characterised in that including：
Temperature collecting cell, for gathering power distribution cabinet internal temperature T；
Top temperature reducing unit, at the top of power distribution cabinet, for cooling to power distribution cabinet inside；
On sidepiece temperature reducing unit, four sides inside power distribution cabinet, for cooling to power distribution cabinet inside；
Bottom temperature reducing unit, located at power distribution cabinet bottom, for cooling to power distribution cabinet inside；
Control unit, is communicated to connect with temperature collecting cell, top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit；
Control unit obtains power distribution cabinet internal temperature T by temperature collecting cell, and T is compared with preset temperature value, and
According to comparative result instruction control top temperature reducing unit, sidepiece temperature reducing unit, the action of bottom temperature reducing unit.
2. power distribution cabinet intelligent cooling control system according to claim 1, it is characterised in that is preset with control unit
One temperature value T1, second temperature value T2, wherein, T1<T2；
As T >=T1When, control unit instruction control top temperature reducing unit, the action of bottom temperature reducing unit, by top temperature reducing unit and bottom
Portion's temperature reducing unit is adjusted to working condition, until T≤aT1When, control unit instruction control top temperature reducing unit, sidepiece cooling are single
Member, the action of bottom temperature reducing unit, halted state is adjusted to, by sidepiece temperature reducing unit by top temperature reducing unit and bottom temperature reducing unit
Working condition is adjusted to, until T≤bT1When, control unit instruction control top temperature reducing unit, sidepiece temperature reducing unit, bottom drop
Warm unit action, halted state is adjusted to by top temperature reducing unit, sidepiece temperature reducing unit, bottom temperature reducing unit；
As T >=T2When, sidepiece temperature reducing unit is adjusted to working condition, directly by control unit instruction control sidepiece temperature reducing unit action
To T≤cT2When, control unit instruction control top temperature reducing unit, sidepiece temperature reducing unit, the action of bottom temperature reducing unit, by top
Temperature reducing unit and bottom temperature reducing unit are adjusted to working condition, sidepiece temperature reducing unit are adjusted into halted state；
Wherein, 0<b<a<1, T1/T2<c<1。
3. power distribution cabinet intelligent cooling control system according to claim 1, it is characterised in that the temperature collecting cell bag
N temperature collect module is included, n temperature collect module is used to gather power distribution cabinet internal temperature, any one temperature collect module
At least include an infrared temperature sensor.
4. power distribution cabinet intelligent cooling control system according to claim 1, it is characterised in that also including prewarning unit, in advance
Alert unit communicates to connect with control unit and carries out early warning according to the instruction of control unit；
Maximum temperature value T is preset with control unitmax；
Control unit obtains power distribution cabinet internal temperature T by temperature collecting cell, as T >=TmaxWhen, control unit is to prewarning unit
Send instruction.
5. power distribution cabinet intelligent cooling control system according to claim 4, it is characterised in that the prewarning unit uses sound
Light crossing-signal.
6. power distribution cabinet intelligent cooling control system according to claim 1, it is characterised in that provided with multiple at the top of power distribution cabinet
Screen pack is equipped with steam vent, and any one steam vent.
7. power distribution cabinet intelligent cooling control system according to claim 1, it is characterised in that power distribution cabinet bottom is provided with multiple
Screen pack is equipped with steam vent, and any one steam vent.
8. power distribution cabinet intelligent cooling control system according to claim 1, it is characterised in that set on four side walls of power distribution cabinet
Have and be equipped with screen pack on multiple steam vents, and any one steam vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244450.0A CN107065964A (en) | 2016-12-29 | 2016-12-29 | A kind of power distribution cabinet intelligent cooling control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244450.0A CN107065964A (en) | 2016-12-29 | 2016-12-29 | A kind of power distribution cabinet intelligent cooling control system |
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| CN107065964A true CN107065964A (en) | 2017-08-18 |
Family
ID=59623932
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611244450.0A Pending CN107065964A (en) | 2016-12-29 | 2016-12-29 | A kind of power distribution cabinet intelligent cooling control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144129A (en) * | 2018-07-26 | 2019-01-04 | 合肥云联电子科技有限公司 | A kind of industrial control equipment internal temperature regulator control system based on temperature sensor |
| CN112975573A (en) * | 2019-03-08 | 2021-06-18 | 重庆钢铁股份有限公司 | Method, device and equipment for lubricating double-sided shear crankshaft with dry oil and computer readable storage medium |
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| CN201331714Y (en) * | 2008-08-13 | 2009-10-21 | 丹东欣泰电气股份有限公司 | Blower control box of PLC intelligent control transformer |
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Application publication date: 20170818 |
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