CN106451152A - Distribution automatic ring main unit dehumidifying method and device - Google Patents
Distribution automatic ring main unit dehumidifying method and device Download PDFInfo
- Publication number
- CN106451152A CN106451152A CN201610986475.1A CN201610986475A CN106451152A CN 106451152 A CN106451152 A CN 106451152A CN 201610986475 A CN201610986475 A CN 201610986475A CN 106451152 A CN106451152 A CN 106451152A
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- ring main
- dehumidifier
- main unit
- controller
- shell
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- 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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- 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)
- Manufacturing & Machinery (AREA)
- Drying Of Gases (AREA)
Abstract
The invention belongs to the technical field of electric power system distribution. The distribution automatic ring main unit dehumidifying method is characterized by including the following steps that 1, a distribution automatic ring main unit dehumidifying device is prepared; 2, the distribution automatic ring main unit dehumidifying device is installed in a distribution automatic ring main unit, and a controller sets a humidity set value and controls whether a dehumidifier and a fan to operate or not; the controller receives 24 h real-time measurement value from a humidity sensor and a temperature sensor, and when the humidity reaches a set value, the controller automatically turns on the dehumidifier and a fan to work; under the action of the fan, moist air in the closed space of the automatic ring main unit is sucked into the distribution automatic ring main unit dehumidifying device, water vapor in the air is condensed into water after passing through a semiconductor cooler in the dehumidifier, and the water is discharged out of the unit through a plastic funnel or flows into a liquid storage bag after dripping and converging; when the temperature exceeds the set temperature, the dehumidifier stops working. The air humidity in the distribution automatic ring main unit can be reduced by the distribution automatic ring main unit dehumidifying method and device, and the operation requirement of secondary equipment in the unit is met.
Description
Technical field
The invention belongs to electric power system power distribution technical field, and in particular to a kind of be applied in power distribution automation ring main unit
Dehumanization method and dehydrating unit.
Background technology
Used as the important component part of intelligent distribution network, power distribution automation engineering construction in recent years is in quickly propel state,
Electrical power distribution automatization system turns to the all-sided implementation by engineering pilot.Ring main unit plays connection as the visual plant of power distribution network
Connect the important function of distribution looped network and distribution electric energy.As ring main unit is often arranged on ground, and it is connected with cable duct, therefore
In cabinet, air humidity is larger.Rainy weather (especially spring) is met, condensation or even seeping phenomenon is occurred in cabinet, easily causes unit
Part short circuit is so as to damage inner member.
With the application of electrical power distribution automatization system, the secondary devices such as DTU in ring main unit, are increased, to the operation in ring main unit
Air humidity in higher requirement, the especially cabinet that environment is proposed.When compared with air humidity in high cube container, can have a strong impact on two in cabinet
Secondary device reliability of operation, results even in the damage of secondary device；Answer air humidity in cabinet larger, repeatedly cause distribution certainly
The situation of secondary device operation exception in dynamicization ring main unit.
For problem above, two kinds of measures are mainly taken at present, one kind is to rely on maintenance work personnel rule of thumb regular
Power distribution automation ring main unit is safeguarded, condensation and hydrops in cabinet is removed, but is removed work and often there is dead angle, also need to if necessary break
Electricity；And the cycle of periodic maintenance work is often longer, in rainy weather (for example：The early spring and plum rain season), shorter in cabinet
More condensation and hydrops are arisen that in time, and periodic maintenance work is difficult to meet secondary device service requirement in cabinet.Another kind of
Measure is dehumidified using desiccant or hot type dehumidifier, is although had certain effect using desiccant, but is easily carried
To pollute, and need often to supplement；Using hot type dehumidifier, can not effectively reduce humidity, moisture can still be retained in and set
In standby, it is impossible to tackle the problem at its root.
Content of the invention
It is an object of the invention to provide a kind of power distribution automation ring main unit dehumanization method and device, automatic to reduce distribution
Change air humidity in ring main unit, meet secondary device service requirement in cabinet.
For achieving the above object, the technical solution used in the present invention is：A kind of power distribution automation ring main unit dehumanization method,
It is characterized in that comprising the steps：
1) prepare power distribution automation ring main unit dehydrating unit；
2) by power distribution automation ring main unit dehydrating unit in power distribution automation ring main unit, arranged by controller wet
Degree setting value, and control whether dehumidifier 4 and fan run；Controller is received and comes from humidity sensor and temperature sensor
24 hours real-time measurement values；After humidity reaches setting value, by controller automatic dehumidifier 4, fan work；In fan
Under effect, the humid air of power distribution automation ring main unit confined space is inhaled in power distribution automation ring main unit dehydrating unit, empty
Hydrone in gas is condensed into water after the semiconductor cooler in dehumidifier 4, drip collect after again by plastic cement funnel 4h,
Aqueduct is discharged in the outer or inflow liquid storing bag of cabinet；When temperature exceedes design temperature, dehumidifier quits work.
The power distribution automation ring main unit dehydrating unit includes shell 1, controller 2, dehumidifier 4, fan 5, dehydrating unit
Postnotum 3, humidity sensor 6 and temperature sensor 7；The controller 2, dehumidifier 4 and fan 5 are mounted on inside shell 1,
The controller 2 is installed on 4 upper end of dehumidifier, and the fan 5 is located at the front end of dehumidifier 4；Described shell 1 is arranged on distribution
In automatization's ring main unit；Humidity sensor 6 and temperature sensor 7 are separately mounted to the outer of power distribution automation ring main unit dehydrating unit
In shell, humidity sensor 6 is connected by holding wire signal input part corresponding with controller 2 respectively with temperature sensor 7；Fan 5
It is connected by control line control end corresponding with controller 2 with dehumidifier 4 respectively；The top of shell 1 and side are provided with vent
1d, the shell 1 at fan 5 is provided with air regulator；One end of aqueduct is connected with the outlet of 4 lower end of the dehumidifier, water guide
The other end of pipe is located at outside power distribution automation ring main unit or is connected with liquid storing bag；Dehydrating unit postnotum 3 is fixed on shell 1,
Dehydrating unit postnotum 3 is located at the rear side of shell 1.
Two through hole 3a for fixing shell 1 are offered on the dehydrating unit postnotum 3；On 1 front end of the shell
Half portion surface offers the hole 1a corresponding with LED light 2a of the controller 2, button 2b, LED charactron 2c, with
And the hole 1e corresponding with humidity sensor；1 front end lower half surface of the shell opens up corresponding with 5 air-out position of fan
Air regulator 1b；1 right lateral surface of the shell is provided with single phase poaer supply interface 1c, and the controller 2, fan 5 are all connect with single phase poaer supply
Mouth 1c connection；1 upper end of described device shell and both sides are provided with blow vent 1d.
Power panel 2a is configured with the controller 2, power panel is coupled with the single phase poaer supply interface 1c；The controller
Power panel 2a to 2 power itself of controller outside, return semiconductor cooler 4c in the dehumidifier 4 and power；The controller 2
It is the control circuit of core using technical grade single-chip microcomputer, the real-time measurement humidity value of humidity sensor can be received, and is configured with 2
LED charactron 2d, can show current humidity numerical value；6 LED lights 2c are configured on the panel of controller, show dehumidifying respectively
Work startup, starting fan, dehumidifier alarm statuses；Additionally, being provided with 3 button 2b on the panel of controller 2, can be used to set
Put humidity and desired temperature.
The dehumidifier include the first fin 4a, the first sponge 4b, semiconductor cooler 4c, the second fin 4d,
Two sponge 4e, dehumidifier postnotum 4f and plastic cement funnel 4h；The first fin 4a is close to the side of the first sponge 4b, described
First fin 4a, the downside same position of the first sponge 4b are all correspondingly provided with the through hole 4m of the first kidney ellipsoid, the second kidney ellipsoid
Through hole 4k, be further opened with the first sponge 4b for install semiconductor cooler 4c the first installation through-hole 4i and for
Second installing hole 4j of plastic cement funnel is installed；Semiconductor cooler 4c is in the first installation through-hole 4i；Second radiating
Piece 4d is close to side the opposite side of the first sponge 4b, and the plastic cement funnel 4h is installed on the second fin 4d lower end；Described
Dehumidifier postnotum 4f bottom is provided with the through hole 4g with the plastic cement funnel 4h corresponding kidney ellipsoid of outlet；The second fin 4d is another
The second sponge 4e is close in side；The first fin 4a, the first sponge 4b, semiconductor cooler 4c, the second fin 4d, modeling
Glue funnel 4h and the second sponge 4e are mounted on dehumidifier postnotum 4f, the dehumidifier postnotum 4f fixed installation dehumidifying dress
Put in shell 1.
The invention has the advantages that：Dehumanization method in power distribution automation ring main unit involved in the present invention and remove
Wet device, by detecting air humidity automatic dehumidifying work in power distribution automation ring main unit, is dehumidified based on semiconductor refrigerating
Principle by the dampness of in the air be condensed into water heel row offer for sale outer, it is no longer necessary to maintenance work personnel implement to check, and environmental protection
Pollution-free.Automatic dehumidifying function power distribution automation ring main unit in is finally realized.
Dehydrating unit in power distribution automation ring main unit involved in the present invention, volume and small power consumption, in that context it may be convenient to pacify
Beside the secondary devices such as the DTU being mounted in power distribution automation ring main unit, good removing is played to secondary device operation in ring main unit
Wet effect.
Description of the drawings
Fig. 1 is the principle schematic of dehumanization method in power distribution automation ring main unit involved in the present invention.
Fig. 2 is the cold doubtful dehumidifying operation principle schematic diagram of semiconductor cooler involved in the present invention.
Fig. 3 is power distribution automation ring main unit dehydrating unit structure decomposition figure involved in the present invention.
Fig. 4 is the dehumidifier structure decomposition figure in power distribution automation ring main unit dehydrating unit involved in the present invention.
Specific embodiment
Below in conjunction with accompanying drawing and case study on implementation, the present invention will be further described：
A kind of power distribution automation ring main unit dehumanization method, comprises the steps：
1) prepare power distribution automation ring main unit dehydrating unit；As shown in figure 1, power distribution automation ring main unit dehydrating unit includes
Shell 1, controller 2, dehumidifier 4, fan 5, dehydrating unit postnotum 3, humidity sensor 6 and temperature sensor 7；The control
Device 2, dehumidifier 4 and fan 5 are mounted on shell 1 (i.e. shell of power distribution automation ring main unit dehydrating unit) inside, the control
Device processed 2 is installed on 4 upper end of dehumidifier (or top), and the fan 5 is located at front end (or front side, the left side in Fig. 1 of dehumidifier 4
For front, the right is rear)；(shell 1 is by two through hole 3a in Fig. 3 in power distribution automation ring main unit for described shell 1
On power distribution automation ring main unit)；Humidity sensor 6 and temperature sensor 7 are separately mounted to power distribution automation ring main unit
The inside the shell of dehydrating unit, humidity sensor 6 and temperature sensor 7 are respectively by holding wire signal input corresponding with controller 2
End is connected；Fan 5 and dehumidifier 4 be connected by control line control end corresponding with controller 2 respectively (controller 2 control fan 5 and
Dehumidifier 4 works)；The top of shell 1 and trailing flank are provided with vent 1d, and the shell 1 at fan 5 is provided with air regulator (air regulator
On the front end lower half surface of shell 1, i.e. label 1b in Fig. 3)；The plastic cement funnel 4h is installed on the of dehumidifier 4
Below two fin 4d；One end of aqueduct is connected with the outlet of plastic cement funnel 4h, and (i.e. one end of aqueduct is removed with described
The outlet of 4 lower end of wet device is connected), the other end of aqueduct is located at outside power distribution automation ring main unit or is connected with liquid storing bag；
As shown in figure 3, dehydrating unit postnotum 3 is fixed on shell 1, after dehydrating unit postnotum 3 is located at shell 1
Side；Offer on the dehydrating unit postnotum 3 for fixing shell 1 two through hole 3a (two through hole 3a for fixation join
Electric automation ring main unit dehydrating unit)；1 front end first half surface of the shell offers the LED light with the controller 2
The corresponding hole 1a of 2a, button 2b, LED charactron 2c (i.e. 3 hole 1a), and the hole corresponding with humidity sensor
1e；1 front end lower half surface of the shell opens up the air regulator 1b corresponding with 5 air-out position of fan；1 right lateral surface of the shell
Single phase poaer supply interface 1c is provided with, the controller 2, fan 5 are all connected with single phase poaer supply interface 1c；1 upper end of described device shell
Blow vent 1d, blow vent 1d are provided with for sucking humid air with both sides；
As shown in figure 3, being configured with power panel 2a in the controller 2, power panel is coupled with the single phase poaer supply interface 1c；
The power panel 2a of the controller is returned semiconductor cooler 4c in the dehumidifier 4 and supplies in addition to 2 power itself of controller
Electricity；The controller 2 is the control circuit of core using technical grade single-chip microcomputer, can receive the real-time measurement humidity of humidity sensor
Value, and 2 LED charactron 2d are configured with, current humidity numerical value can be shown；6 LED lights are configured on the panel of controller
2c, shows dehumidifying work startup, starting fan, dehumidifier alarm statuses respectively；Additionally, being provided with 3 on the panel of controller 2
Button 2b, can be used to arrange humidity and desired temperature；
As shown in Figure 4 (dehumidifier exploded view), dehumidifier includes the first fin 4a (i.e. hot-side heat dissipation piece), the first sponge
4b, semiconductor cooler 4c, the second fin 4d (cold end fin), the second sponge 4e, dehumidifier postnotum 4f and plastic cement leakage
Bucket 4h；The first fin 4a is close to the side of the first sponge 4b, the downside of the first fin 4a and the first sponge 4b
Same position is all correspondingly provided with the through hole 4k of the through hole 4m of the first kidney ellipsoid, the second kidney ellipsoid, also opens on the first sponge 4b
The the first installation through-hole 4i and the second installing hole 4j for installing plastic cement funnel 4h being provided with for installing semiconductor cooler 4c；
The dehumidifier postnotum 4f bottom is provided with the through hole 4g with the plastic cement funnel 4h corresponding kidney ellipsoid of outlet；Semiconductor cooler 4c
In the first installation through-hole 4i；The opposite side of the first sponge 4b, the plastic cement leakage are close in the second fin 4d side
Bucket 4h is installed on the second fin 4d lower end；The second fin 4d opposite side is close to the second sponge 4e；Described first
Fin 4a, the first sponge 4b, semiconductor cooler 4c, the second fin 4d, plastic cement funnel 4h and the second sponge 4e are respectively mounted
On dehumidifier postnotum 4f, in the dehumidifier postnotum 4f fixed installation dehydrating unit shell 1；
2) power distribution automation ring main unit dehydrating unit (is removed using semi-conductor condensation in power distribution automation ring main unit
Wet mode), humidity set point is arranged by controller, and controls whether dehumidifier 4 and fan 5 run；Controller 2 receive from
In humidity sensor 6 and 24 hours real-time measurement values of temperature sensor 7；After humidity reaches setting value, automatic by controller
Start dehumidifier 4, fan 5 to work；In the presence of fan 5, the humid air of power distribution automation ring main unit confined space is inhaled
Enter in power distribution automation ring main unit dehydrating unit, the hydrone of in the air is cold after the semiconductor cooler 4c in dehumidifier 4
Congeal into water, and drip is discharged in the outer or inflow liquid storing bag of cabinet by plastic cement funnel 4h, aqueduct after collecting again；Set when temperature exceedes
During temperature, dehumidifier quits work (fan 5 can also quit work).
As shown in figure 1, controller 2 receives the real-time measuring data for coming from humidity sensor 6 and temperature sensor 7；When
After air humidity exceedes setting value, controller 2 starts fan 5 and dehumidifier 4.In the presence of fan 5, power distribution automation looped network
The humid air of cabinet confined space is drawn in dehydrating unit (i.e. from 1 top of shell of dehydrating unit and the vent 1d of side
In power distribution automation ring main unit dehydrating unit), pass sequentially through the second sponge 4e, the second fin 4d, semiconductor cooler 4c and
After first sponge 4b, the first fin 4a, fan 5, it is changed into dry air and discharges dehydrating unit.Aqueous vapor in humid air is passed through
Water is condensed into after semiconductor cooler 4c, after drip is pooled to plastic cement funnel 4h, then the outer or inflow storage of cabinet is discharged by aqueduct
In liquid bag.When temperature exceedes design temperature, dehumidifier quits work (fan 5 can also quit work).Cabinet can effectively be reduced
The moisture of interior air, reduces humidity, reaches good effect on moisture extraction.
As shown in Fig. 2 semiconductor cooler is worked based on thermoelectric cooling principle, one or more pairs of N are passed through using unidirectional current
Type and P-type semiconductor are realized, and Fig. 2 is the refrigeration model of single thermoelectricity pair.In refrigeration mode, unidirectional current is through power supply 8 from N-type
Quasiconductor 9 flows to P-type semiconductor 10, and the temperature of focus centering cold end reduces, and absorbs heat from environment, when electronics passes through
When interconnective conductor flows to the high-energy tail of N-type semiconductor 9 from the mental retardation end of P-type semiconductor 10, refrigeration end 11 will be from ring
Heat is absorbed in border.Then heat is transferred to the other end by electronics conduction, when electronics returns to the mental retardation end of P-type semiconductor 10
When released energy by heating end 12.Multiple thermoelectricity constitute thermoelectric device to linking together, just.
Claims (5)
1. a kind of power distribution automation ring main unit dehumanization method, it is characterised in that comprise the steps：
1) prepare power distribution automation ring main unit dehydrating unit；
2) by power distribution automation ring main unit dehydrating unit in power distribution automation ring main unit, humidity is arranged by controller and is set
Definite value, and control whether dehumidifier (4) and fan run；Controller is received and comes from the 24 of humidity sensor and temperature sensor
Hour real-time measurement values；After humidity reaches setting value, by controller automatic dehumidifier (4), fan work；In fan
Under effect, the humid air of power distribution automation ring main unit confined space is inhaled in power distribution automation ring main unit dehydrating unit, empty
Hydrone in gas is condensed into water after the semiconductor cooler in dehumidifier (4), and drip passes through plastic cement funnel after collecting again
(4h), aqueduct is discharged in the outer or inflow liquid storing bag of cabinet；When temperature exceedes design temperature, dehumidifier quits work.
2. realize the power distribution automation ring main unit dehydrating unit of claim 1 methods described, it is characterised in that including shell (1),
Controller (2), dehumidifier (4), fan (5), dehydrating unit postnotum (3), humidity sensor (6) and temperature sensor (7)；Institute
State controller (2), dehumidifier (4) and fan (5) and shell (1) inside is mounted on, controller (2) are installed on dehumidifier
(4) upper end, described fan (5) are located at the front end of dehumidifier (4)；Described shell (1) is in power distribution automation ring main unit；
Humidity sensor (6) and temperature sensor (7) are separately mounted to the inside the shell of power distribution automation ring main unit dehydrating unit, and humidity is passed
Sensor (6) is connected by holding wire signal input part corresponding with controller (2) respectively with temperature sensor (7)；Fan (5) and remove
Wet device (4) are connected by control line control end corresponding with controller (2) respectively；The top of shell (1) and trailing flank are provided with logical
Air port (1d), the shell (1) at fan (5) place is provided with air regulator；The outlet of one end of aqueduct and the dehumidifier (4) lower end
It is connected, the other end of aqueduct is located at outside power distribution automation ring main unit or is connected with liquid storing bag；Dehydrating unit postnotum (3) is solid
It is scheduled on shell (1), dehydrating unit postnotum (3) is located at the rear side of shell (1).
3. power distribution automation ring main unit dehydrating unit according to claim 2, it is characterised in that the dehydrating unit postnotum
(3) two through holes (3a) for fixing shell (1) are offered on；Shell (1) front end first half surface offers and institute
State the corresponding hole (1a) of the LED light (2a) of controller (2), button (2b), LED charactron (2c), and and humidity
The corresponding hole of sensor (1e)；Shell (1) front end lower half surface opens up corresponding with fan (5) air-out position
Air regulator (1b)；Shell (1) right lateral surface is provided with single phase poaer supply interface (1c), controller (2), fan (5) all with list
Phase power interface (1c) is connected；Described device shell (1) upper end and both sides are provided with blow vent (1d).
4. power distribution automation ring main unit dehydrating unit according to claim 2, it is characterised in that joins in controller (2)
Power panel (2a) is equipped with, power panel is coupled with single phase poaer supply interface (1c)；The power panel (2a) of the controller is to control
Outside device (2) power itself, the dehumidifier (4) interior semiconductor cooler (4c) power supply is returned；Described controller (2) are using industry
Level single-chip microcomputer is the control circuit of core, can receive the real-time measurement humidity value of humidity sensor, and be configured with 2 LED numbers
Pipe (2d), can show current humidity numerical value；6 LED lights (2c) are configured on the panel of controller, show dehumidifying work respectively
Startup, starting fan, dehumidifier alarm statuses.
5. power distribution automation ring main unit dehydrating unit according to claim 2, it is characterised in that dehumidifier includes the first radiating
Piece (4a), the first sponge (4b), semiconductor cooler (4c), the second fin (4d), the second sponge (4e), dehumidifier postnotum
(4f) with plastic cement funnel (4h)；First fin (4a) is close to the side of the first sponge (4b), first fin
(4a), the downside same position of the first sponge (4b) be all correspondingly provided with the through hole (4m) of the first kidney ellipsoid, the second kidney ellipsoid logical
Hole (4k), be further opened with the first sponge (4b) for install semiconductor cooler (4c) the first installation through-hole (4i) and
For installing second installing hole (4j) of plastic cement funnel；Semiconductor cooler (4c) is in the first installation through-hole (4i)；Institute
The opposite side that the first sponge (4b) is close in the second fin (4d) side is stated, plastic cement funnel (4h) is installed on described second and dissipates
Backing (4d) lower end；Dehumidifier postnotum (4f) bottom is provided with the through hole for exporting corresponding kidney ellipsoid with plastic cement funnel (4h)
(4g)；Second fin (4d) opposite side is close to the second sponge (4e)；First fin (4a), the first sponge
(4b), semiconductor cooler (4c), the second fin (4d), plastic cement funnel (4h) and the second sponge (4e) are mounted on dehumidifier
On postnotum (4f), in described dehumidifier postnotum (4f) fixed installation dehydrating unit shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986475.1A CN106451152A (en) | 2016-11-10 | 2016-11-10 | Distribution automatic ring main unit dehumidifying method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986475.1A CN106451152A (en) | 2016-11-10 | 2016-11-10 | Distribution automatic ring main unit dehumidifying method and device |
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| CN106451152A true CN106451152A (en) | 2017-02-22 |
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| CN201610986475.1A Pending CN106451152A (en) | 2016-11-10 | 2016-11-10 | Distribution automatic ring main unit dehumidifying method and device |
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| CN112186542A (en) * | 2020-10-19 | 2021-01-05 | 江西领创机电科技有限公司 | Switch board that heat dispersion is good |
| CN112186542B (en) * | 2020-10-19 | 2023-05-23 | 杭州璐欣电器制造有限公司 | Power distribution cabinet with good heat dissipation performance |
| CN112433546A (en) * | 2020-10-20 | 2021-03-02 | 国网江苏省电力有限公司盐城供电分公司 | Cable branch box dehumidification and dehumidification device |
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