CN108919848A - A kind of dehumidification system for bin in high low pressure room - Google Patents
A kind of dehumidification system for bin in high low pressure room Download PDFInfo
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- CN108919848A CN108919848A CN201711329729.3A CN201711329729A CN108919848A CN 108919848 A CN108919848 A CN 108919848A CN 201711329729 A CN201711329729 A CN 201711329729A CN 108919848 A CN108919848 A CN 108919848A
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- temperature
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- dry air
- bin
- low pressure
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D22/00—Control of humidity
- G05D22/02—Control of humidity characterised by the use of electric means
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- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of dehumidification system for bin in high low pressure room, acquire in each high low pressure room data of the Temperature and Humidity module in all bins in real time by temperature and humidity collection device, the collected real time humiture data of local control device acquisition storage institute, local control device controls the opening and closing of dry air process units and dry air conveying device by collected humidity value, the present invention also passes through local control device and records temperature and humidity collection device in real time, dry air process units and dry air conveying device operating status event, according to the acquisition of remote control apparatus, the corresponding data of local control device are acquired to remote control apparatus.This bright technical solution is collected analysis to the information data of this system, and integrated, the intelligent and automation control management to the bin Temperature and Humidity Control in multiple high low pressure rooms is realized in the opening and closing for automatically controlling drying system based on the analysis results.
Description
Technical field
The present invention relates to field of electrical equipment, in particular to a kind of dehumidification system for bin in high low pressure room.
Background technique
Switchgear, bus bridge frame power equipment are the most basic power equipments of substation, but with the operation time limit
Increase the aggravation with the aging of part group parts, operational defect or hidden danger are increasingly prominent, and ventilation is generally more focused on so room in hyperbaric chamber
Interior temperature and humidity is affected by outdoor environment, and condensation is also also easy to produce in indoor high-tension switch cabinet, and cabinet interior insulation material does not have mostly
Consider waterproofness, its insulating properties can be reduced if having dew on it, in some instances it may even be possible to cause to climb electricity or flashover, seriously affect
Equipment operates normally, and the equipment especially having is in stoppage in transit state, and internal temperature is lower, is easier to be formed on its surface condensation,
Accident easily occurs if power transmission at this time.
At present the case where monitoring cabinet humidity, as soon as general measured using installation Temperature Humidity Sensor in cabinet, generally
The case where checking temperature and humidity at the scene.
It is generally used for dehumidification by condensation in the mating heater of moisture probe or the small-sized cabinet of fan in the power system at present
Device.They are all to start hot dehumidification by condensation device in heater/small-sized cabinet when humidity is excessively high, will be in humid air heating/cabinet
Humid air is condensed into outside droplet discharge cabinet, but no matter which kind of mode will appear the situation of heating equipment ambient air, then
In addition many electric equipment elements also heater itself, will cause hot-air rising.Hot-air encounters relative low temperature after rising
Body surface cold damp air after can generate condensation, condensation, which can enable, reduces dielectric level, causes the safety for being unfavorable for equipment
Operation, because in switch bin being the space of relative closure, because a variety of causes causes each position temperature to have differences in cabinet.It makes
At there is still a large amount of moisture Local residues inside bin, it can not thoroughly be effectively reduced bin equipment interior humidity.?
South, summer temperature is high, and humidity is big, in addition the heat that operating element generates in bin, the formation of condensation cause various cable meters
Skin aging is serious, easily causes equipment fault or even equipment burnout phenomenon.
The equipment such as above-mentioned heater damage has the problem of yields or service life eventually, must have a power failure after sale after failure
It can just carry out.But because high-tension apparatus, which has a power failure, to be influenced than more serious, difficulty is bigger, and causes to lose moist after heating device
Dew condensation phenomenon aggravation.
The temperature and humidity measurement points of the equipment such as above-mentioned heater it is general only one, but inside high-low pressure bin but because
Function reason is physically divided into multiple opposite compartments, and using the complete KYN switchgear of high pressure as example, inside generally can be general
Think be divided into 4 cable vault, breaker chamber, bus-bar room, secondary chamber regions.And current heating equipment can only generally pass through
The humidity in a region is measured to control whether heating equipment works.
The heating method of the equipment such as above-mentioned heater causes heated spatial concentration, and air themperature is uneven, actual drying
Effect is very limited, and the non-uniform temperature of space air exacerbates dew condensation phenomenon.
Upper above-mentioned by way of condensing unit, droplet can be transported to outdoor, still from cable duct below switch bin
Transport the pipeline external surface of cold water all can condensation, and pipeline uses metallic conduit more, increases new security risk.
Summary of the invention
The main object of the present invention is to propose a kind of dehumidification system for bin in high low pressure room, it is intended to be overcome above-mentioned
Problem.
To achieve the above object, a kind of dehumidification system for bin in high low pressure room proposed by the present invention, including it is warm and humid
Spend acquisition device, dry air process units, dry air conveying device, local control device, communication module, long-range control dress
It sets, connect network and control electrical circuit, wherein：
Temperature and humidity collection device, real time humiture data transmission to the local control for each bin of multipoint acquisition fill
It sets；
Local control device, for receiving and storing real time humiture data collected, and according to collected real-time
Data of the Temperature and Humidity module controls opening or closing for dry air process units and dry air conveying device by controlling electrical circuit respectively,
And temperature and humidity collection device, dry air process units and dry air conveying device operating status event are recorded in real time；And it connects
The acquisition that remote control apparatus is sent is received, and corresponding data are sent to remote control apparatus according to acquisition；
Communication module, for carrying out data biography between local control device and remote control apparatus by connecting network
It is defeated；
Remote control apparatus, for acquiring the data of the Temperature and Humidity module of each bin from local control device and/or temperature and humidity is adopted
The remote control management that acquisition means, dry air process units and dry air conveying device operating status event dehumidify.
Preferably, the temperature and humidity collection device includes several Temperature Humidity Sensors, the number of the Temperature Humidity Sensor
It is equal with the compartment number of bin each in high low pressure room, and the compartment of Temperature Humidity Sensor and bin is arranged in a one-to-one correspondence.
Preferably, the dry air conveying device includes a delivery main, several delivery branch pipes and several conveyings
The air outlet of branched pipe, the delivery main is connect with the air outlet of dry air process units, each delivery branch pipe with
Delivery main communicates, and each delivery branch pipe is arranged in a one-to-one correspondence with each bin, each conveying branches pipe and bin
Compartment be arranged in a one-to-one correspondence.
Preferably, the control electrical circuit includes dry air production circuit and dry air conveying loop, the local control
Device processed includes several temperature and humidity filed devices, several electrically-controlled valves and relay, and each temperature and humidity filed device passes through dry
Dry air production circuit is electrically connected with dry air process units, and dry air produces circuit in series connection relay and drying is empty
Gas process units；Dry air conveying loop is connected in parallel temperature and humidity filed device and electrically-controlled valve, electrically-controlled valve and delivery branch pipe one
One is correspondingly arranged.
Preferably, the connection network includes measurement and control network, and the measurement and control network includes 485 bus A and 485 bus Bs, institute
State Temperature Humidity Sensor by 485 hand in hand mode communication connection temperature and humidity filed device, form 485 bus A；The temperature and humidity
Measure and control device by 485 hand in hand mode communication connection temperature and humidity centralized monitoring and controlling show all-in-one machine, form 485 bus Bs.
Preferably, the connection network further includes long-distance communication network, and the remote control apparatus passes through telecommunication net
Network and communication module data are transmitted.
Preferably, the communication module includes GPRS communication unit, and the long-distance communication network includes GPRS public network, described
Remote control apparatus includes WEB and wechat background server, internet terminal and Temperature and Humidity Control management APP application, the temperature
Humidity centralized monitoring and controlling show all-in-one machine connect with the GPRS communication unit, the GPRS communication unit pass through GPRS public network and
WEB is connect with wechat background server, and internet terminal is connect by GPRS public network with wechat background server, Temperature and Humidity Control
Management APP application is installed on internet terminal.
Preferably, the GPRS communication unit passes through power grid internal optical fiber private line network and WEB and wechat background server
Connection, internet terminal are connect by power grid internal optical fiber private line network with wechat background server.
Preferably, the communication module further includes GSM communication unit, and the long-distance communication network further includes GSM Intranet, institute
Stating remote control apparatus further includes service terminal, and the service terminal is connect by GSM Intranet with GSM communication unit, GSM communication
Unit shows that all-in-one machine is connect with each temperature and humidity filed device by temperature and humidity centralized monitoring and controlling.
Preferably, institute's temperature and humidity centralized monitoring and controlling display one sends order by setting short message timing, fixed to service terminal
When send each Temperature Humidity Sensor data of the Temperature and Humidity module collected；The service terminal is inquired or is modified temperature by GSM Intranet
The starting humidity threshold and return difference humidity threshold of humidity measure and control device.
The present invention acquires in each high low pressure room data of the Temperature and Humidity module in all bins by temperature and humidity collection device in real time,
The collected real time humiture data of local control device acquisition storage institute, local control device by collected humidity value come
The opening and closing of dry air process units and dry air conveying device is controlled, the present invention also passes through local control device and records in real time
Temperature and humidity collection device, dry air process units and dry air conveying device operating status event, according to long-range control dress
The acquisition set, the acquisition corresponding data of local control device to remote control apparatus.This bright technical solution is to this system
Information data is collected analysis, and the opening and closing for automatically controlling drying system based on the analysis results is realized to multiple high low pressure rooms
Integrated, the intelligent and automation control management of interior bin Temperature and Humidity Control.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is functional block diagram of the present invention for an embodiment of the dehumidification system of bin in high low pressure room；
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
Referring to Fig.1, a kind of dehumidification system for bin in high low pressure room proposed by the present invention, including humiture collection
Device, dry air process units, dry air conveying device, local control device, communication module, remote control apparatus, company
Network and control electrical circuit are connect, wherein：
Temperature and humidity collection device, real time humiture data transmission to the local control for each bin of multipoint acquisition fill
It sets；
Local control device, for receiving and storing real time humiture data collected, and according to collected real-time
Data of the Temperature and Humidity module controls opening or closing for dry air process units and dry air conveying device by controlling electrical circuit respectively,
And temperature and humidity collection device, dry air process units and dry air conveying device operating status event are recorded in real time；And it connects
The acquisition that remote control apparatus is sent is received, and corresponding data are sent to remote control apparatus according to acquisition；
Communication module, for carrying out data biography between local control device and remote control apparatus by connecting network
It is defeated；
Remote control apparatus, for acquiring the data of the Temperature and Humidity module of each bin from local control device and/or temperature and humidity is adopted
The remote control management that acquisition means, dry air process units and dry air conveying device operating status event dehumidify.
In embodiments of the present invention, it is acquired in real time by temperature and humidity collection device warm and humid in all bins in high low pressure room
Degree evidence, is sent to local control device, controls dry air process units by local control device and dry air conveys
The opening and closing of device, the present invention also pass through local control device record in real time temperature and humidity collection device, dry air process units and
Dry air conveying device operating status event sends corresponding data to long-range according to the acquisition of remote control apparatus
Control device.This bright information data by this system realizes integrated, intelligence to the bin Temperature and Humidity Control in high low pressure room
Energyization and automation control management.
The temperature and humidity collection device, dry air process units and dry air conveying device operating status event include
Temperature and humidity collection device, the display of dry air process units and dry air conveying device operation data and failure report, such as：
Current temperature and humidity filed device breaks down event, can be actively to temperature and humidity collection when starting humidity value and return difference humidity value triggers
Middle observing and controlling shows all-in-one machine reported event, if remote control apparatus sends the acquisition to current temperature and humidity filed device,
The display of temperature and humidity centralized monitoring and controlling is integrally by current temperature and humidity filed device real-time temperature temperature collected and one starting of event of failure
It send to remote control apparatus.
Preferably, the temperature and humidity collection device includes several Temperature Humidity Sensors, the number of the Temperature Humidity Sensor
It is equal with the compartment number of bin each in high low pressure room, and the compartment of Temperature Humidity Sensor and bin is arranged in a one-to-one correspondence.
In embodiments of the present invention, it is contemplated that each compartment in bin places power equipment difference, to the warm and humid of compartment
Degree can generate different effects, therefore the compartment of Temperature Humidity Sensor and bin is arranged in a one-to-one correspondence.
Preferably, the dry air conveying device includes a delivery main, several delivery branch pipes and several conveyings
The air outlet of branched pipe, the delivery main is connect with the air outlet of dry air process units, each delivery branch pipe with
Delivery main communicates, and each delivery branch pipe is arranged in a one-to-one correspondence with each bin, each conveying branches pipe and bin
Compartment be arranged in a one-to-one correspondence.
In embodiments of the present invention, it is contemplated that the data of the Temperature and Humidity module of the compartment in bin is variant, therefore each described
Delivery branch pipe is arranged in a one-to-one correspondence with each bin, and the compartment of each conveying branches pipe and bin is arranged in a one-to-one correspondence, with
Just it conveys corresponding dry air and carries out dehumidification treatments.
Preferably, the control electrical circuit includes dry air production circuit and dry air conveying loop, the local control
Device processed includes several temperature and humidity filed devices, several electrically-controlled valves and relay, and each temperature and humidity filed device passes through dry
Dry air production circuit is electrically connected with dry air process units, and dry air produces circuit in series connection relay and drying is empty
Gas process units；Dry air conveying loop is connected in parallel temperature and humidity filed device and electrically-controlled valve, electrically-controlled valve and delivery branch pipe one
One is correspondingly arranged.
In embodiments of the present invention, the present invention produces circuit in series by dry air and connects relay and dry air life
Device is produced, with the opening and closing of relay control dry air process units；Dry air conveying loop is connected in parallel temperature and humidity filed
Device and electrically-controlled valve, electrically-controlled valve are arranged in a one-to-one correspondence with delivery branch pipe, and the opening and closing of a delivery branch pipe is controlled with each electrically-controlled valve.
Preferably, the connection network includes measurement and control network, and the measurement and control network includes 485 bus A and 485 bus Bs, institute
State Temperature Humidity Sensor by 485 hand in hand mode communication connection temperature and humidity filed device, form 485 bus A；The temperature and humidity
Measure and control device by 485 hand in hand mode communication connection temperature and humidity centralized monitoring and controlling show all-in-one machine, form 485 bus Bs.
In embodiments of the present invention, measurement and control network of the invention includes 485 bus A and 485 bus Bs, passes through 485 bus A
Several Temperature Humidity Sensors in each bin of communication connection and the temperature and humidity filed device to match with bin, it is warm and humid in this way
Degree surveys control device and the acquisition to all data of the Temperature and Humidity module in the bin of celebrating, is led to by independent 485 bus A
News, ceaselessly to collect the real time humiture data of all Temperature Humidity Sensors in bin in real time；Passed through by 485 bus Bs
The several temperature and humidity filed devices and temperature and humidity centralized monitoring and controlling connected in high low pressure room show all-in-one machine, are filled with temperature and humidity filed
It sets and shows that the instruction of all-in-one machine sends corresponding real time humiture data according to temperature and humidity centralized monitoring and controlling.
Preferably, the connection network further includes long-distance communication network, and the remote control apparatus passes through telecommunication net
Network and communication module data are transmitted.
Preferably, the communication module includes GPRS communication unit, and the long-distance communication network includes GPRS public network, described
Remote control apparatus includes WEB and wechat background server, internet terminal and Temperature and Humidity Control management APP application, the temperature
Humidity centralized monitoring and controlling show all-in-one machine connect with the GPRS communication unit, the GPRS communication unit pass through GPRS public network and
WEB is connect with wechat background server, and internet terminal is connect by GPRS public network with wechat background server, Temperature and Humidity Control
Management APP application is installed on internet terminal.
Preferably, the GPRS communication unit passes through power grid internal optical fiber private line network and WEB and wechat background server
Connection, internet terminal are connect by power grid internal optical fiber private line network with wechat background server.
Preferably, the communication module further includes GSM communication unit, and the long-distance communication network further includes GSM Intranet, institute
Stating remote control apparatus further includes service terminal, and the service terminal is connect by GSM Intranet with GSM communication unit, GSM communication
Unit shows that all-in-one machine is connect with each temperature and humidity filed device by temperature and humidity centralized monitoring and controlling.
Preferably, institute's temperature and humidity centralized monitoring and controlling display one sends order by setting short message timing, fixed to service terminal
When send each Temperature Humidity Sensor data of the Temperature and Humidity module collected；The service terminal is inquired or is modified temperature by GSM Intranet
The starting humidity threshold and return difference humidity threshold of humidity measure and control device.
In embodiments of the present invention, it should be appreciated that ground is that long-distance communication network of the invention has and is not limited to GPRS public network
With GSM Intranet, GPRS public network also can be replaced the internal optical fiber private line network of power grid.Here, the effect of GSM communication unit is place
It manages warm and humid centralized monitoring and controlling of ordering and shows the short message order that all-in-one machine is sent by 485 bus Bs, issue short message content according to order, and
The corresponding short message content received is sent to temperature and humidity centralized monitoring and controlling by 485 bus Bs and shows all-in-one machine.Service terminal is at least
One, each service terminal can show that all-in-one machine sends order and reads 485 bus A to temperature and humidity centralized monitoring and controlling by short message
Upper temperature and humidity filed device real time humiture data collected and event.
The WEB and wechat background server by public network to each power distribution room or switch or substation on temperature and humidity
Centralized displaying all-in-one machine sends the acquisition of data, event etc., and collected data and all kinds of events are stored in service
On device database, and generate the information such as related statements, chart.The aobvious one of GPRS communication unit processing temperature and humidity centralized monitoring and controlling
The order that machine is sent by 485 buses sends related content to WEB and wechat background server.
The internet terminal of embedded Temperature and Humidity Control management APP application is taken by public network sign-on access WEB and wechat backstage
Business device, checks the data of the Temperature and Humidity module and operating status event in the high pressures cabinet class equipment such as switchgear.
The communication module can use the two-in-one communication device of GPRS/GSM.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all in the present invention
Inventive concept under, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/be used in it indirectly
He is included in scope of patent protection of the invention relevant technical field.
Claims (10)
1. a kind of dehumidification system for bin in high low pressure room, which is characterized in that including temperature and humidity collection device, dry sky
Gas process units, dry air conveying device, local control device, communication module, remote control apparatus, connection network and control electricity
Circuit, wherein：
Temperature and humidity collection device, the real time humiture data transmission for each bin of multipoint acquisition is to local control device；
Local control device, for receiving and storing real time humiture data collected, and according to collected warm and humid in real time
Degree controls opening or closing for dry air process units and dry air conveying device according to by controlling electrical circuit respectively, and real
The operating status event of Shi Jilu temperature and humidity collection device, dry air process units and dry air conveying device；And it receives
The acquisition that remote control apparatus is sent, and corresponding data are sent to remote control apparatus according to acquisition；
Communication module, for being carried out data transmission between local control device and remote control apparatus by connecting network；
Remote control apparatus, for acquired from local control device each bin data of the Temperature and Humidity module and temperature and humidity collection device,
The operating status event of dry air process units and dry air conveying device carries out control management.
2. the dehumidification system for bin in high low pressure room as described in claim 1, which is characterized in that the temperature and humidity is adopted
Acquisition means include several Temperature Humidity Sensors, the compartment of each bin in the number and high low pressure room of the Temperature Humidity Sensor
Number is equal, and the compartment of Temperature Humidity Sensor and bin is arranged in a one-to-one correspondence.
3. the dehumidification system for bin in high low pressure room as described in claim 1, which is characterized in that the dry air
Conveying device includes a delivery main, several delivery branch pipes and several conveying branches pipes, the air outlet of the delivery main
It is connect with the air outlet of dry air process units, each delivery branch pipe is communicated with delivery main, each conveying branch
Pipe is arranged in a one-to-one correspondence with each bin, and the compartment of each conveying branches pipe and bin is arranged in a one-to-one correspondence.
4. the dehumidification system for bin in high low pressure room as described in claim 1, which is characterized in that the control electrical circuit
Circuit and dry air conveying loop are produced including dry air, the local control device includes several temperature and humidity filed dresses
It sets, several electrically-controlled valves and relay, each temperature and humidity filed device produce circuit and dry air life by dry air
Device electrical connection is produced, dry air produces circuit in series connection relay and dry air process units；Dry air is transmitted back to
Road is connected in parallel temperature and humidity filed device and electrically-controlled valve, and electrically-controlled valve is arranged in a one-to-one correspondence with delivery branch pipe.
5. the dehumidification system for bin in high low pressure room as described in claim 1, which is characterized in that the connection network
Including measurement and control network, the measurement and control network includes 485 bus A and 485 bus Bs, and the Temperature Humidity Sensor is handed in hand by 485
Mode communication connection temperature and humidity filed device forms 485 bus A；The temperature and humidity filed device by 485 hand in hand mode it is logical
News connection temperature and humidity centralized monitoring and controlling shows all-in-one machine, forms 485 bus Bs.
6. the dehumidification system for bin in high low pressure room as described in claim 1, which is characterized in that the connection network
It further include long-distance communication network, the remote control apparatus is transmitted by long-distance communication network and communication module data.
7. the dehumidification system for bin in high low pressure room as described in claim 1, which is characterized in that the communication module
Including GPRS communication unit, the long-distance communication network includes GPRS public network, after the remote control apparatus includes WEB and wechat
Platform server, internet terminal and Temperature and Humidity Control management APP application, the temperature and humidity centralized monitoring and controlling show all-in-one machine with it is described
The connection of GPRS communication unit, the GPRS communication unit are connect by GPRS public network with WEB with wechat background server, internet
Terminal is connect by GPRS public network with wechat background server, and Temperature and Humidity Control management APP application is installed on internet terminal.
8. the dehumidification system for bin in high low pressure room as claimed in claim 7, which is characterized in that the GPRS communication
Unit is connect by power grid internal optical fiber private line network with WEB with wechat background server, and internet terminal passes through inside power grid
Optical fiber private line network is connect with wechat background server.
9. the dehumidification system for bin in high low pressure room as described in claim 1, which is characterized in that the communication module
It further include GSM communication unit, the long-distance communication network further includes GSM Intranet, and the remote control apparatus further includes that service is whole
End, the service terminal are connect by GSM Intranet with GSM communication unit, and GSM communication unit is shown by temperature and humidity centralized monitoring and controlling
All-in-one machine is connect with each temperature and humidity filed device.
10. the dehumidification system for bin in high low pressure room as claimed in claim 9, which is characterized in that institute's temperature and humidity is concentrated
Observing and controlling display one sends order by setting short message timing, regularly sends each Temperature Humidity Sensor to service terminal and is acquired
Data of the Temperature and Humidity module；The service terminal inquire or modify by GSM Intranet temperature and humidity filed device starting humidity threshold and
Return difference humidity threshold.
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| CN201711329729.3A CN108919848A (en) | 2017-12-13 | 2017-12-13 | A kind of dehumidification system for bin in high low pressure room |
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Cited By (1)
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| CN110445059A (en) * | 2019-07-17 | 2019-11-12 | 中节能（合肥）可再生能源有限公司 | A kind of cable duct dehumanization method |
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| CN207571610U (en) * | 2017-12-13 | 2018-07-03 | 广东电网有限责任公司清远供电局 | For the dehumidification system of bin in high low pressure room |
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| CN110445059A (en) * | 2019-07-17 | 2019-11-12 | 中节能（合肥）可再生能源有限公司 | A kind of cable duct dehumanization method |
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