CN204651692U - A kind of automatic dehumidifying system of outdoor switching station - Google Patents
A kind of automatic dehumidifying system of outdoor switching station Download PDFInfo
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- CN204651692U CN204651692U CN201520279848.2U CN201520279848U CN204651692U CN 204651692 U CN204651692 U CN 204651692U CN 201520279848 U CN201520279848 U CN 201520279848U CN 204651692 U CN204651692 U CN 204651692U
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- microcontroller
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- air
- humidity
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Abstract
A kind of automatic dehumidifying system of outdoor switching station, be arranged at switchyard box house, system configuration comprises: microcontroller, dehumidifier and the temperature sensor be connected with the signal input part of microcontroller and humidity sensor, the controlled end of described dehumidifier is connected with the control end of microcontroller.Described microcontroller comprises the memory of the empirical value reference table storing ambient temperature, humidity and dew point three corresponding relation.Described cabinet wall is also provided with the air that the horizontal heat insulation sound-absorbing layer that connected by longitudinal heat insulation sound-absorbing layer and perpendicular cross arrangement forms and leads wet heat insulation sound-absorbing layer.Greatly reduce compared to conventional dehumidification method cost, and more energy-conservation, take up room also less; Concrete structure according to station body selects suitable installation site, can realize evenly dehumidifying to air in station; Affect less on part, component aging.
Description
Technical field
The utility model belongs to outdoor switching station auxiliary device technical field, specifically a kind of automatic dehumidifying system of outdoor switching station.
Background technology
The composition of air can be regarded as and be made up of dry air, steam, dust three part.Absolute humidity is: the quality of the steam that unit air is contained under certain pressure and temperature.The maximum Water Vapor Quality that saturated humidity can comprise under this condition for unit air.Temperature is higher, and the steam that can comprise in air is more, and saturated humidity is larger.The ratio of absolute humidity and saturated humidity is relative humidity.If keep the humidity of air and reduce air themperature, after temperature is low to moderate certain value, the partial pressure of steam reaches the saturation pressure corresponding to air themperature at that time, and the water in air vapour under this condition just reaches capacity.If reduce air themperature further again, steam will be formed " dew drips " by condensation from air.This phenomenon is called as " condensation ".
The application site of outdoor switching station is out of doors, and in switchyard casing, temperature humidity affects very serious by outside climatic.General environment humidity: monthly average≤90%, per day≤95%.During high humility, temperature, once reduce saturated humidity reduction, may produce condensation in cabinet, and this is a kind of threat to service life of equipment and Electrical Safety.
Analyzed by the principle produced condensation, starting with from 2 to prevent the appearance of condensation: control temperature does not allow temperature decrease, and controlled humidity remains on lower state by the humidity in air.Product can take some measures anti-condensation in advance usually.Some conventional at present measures have: 1, install an air-conditioner, and control and dehumidifying in order to temperature; 2, temperature and humidity controller, utilizes heater plate air.
All more or less there is either large or small defect in these measures.First the method installed an air-conditioner can improve product cost greatly, and air-conditioning is installed will be in opening always, wastes energy; General air-conditioning volume is all comparatively large, is difficult to meet present space-saving product design concept.
The specific practice of installing temperature and humidity controller is: temperature sensor carries out on-line checkingi, sampling to ambient temperature, when ambient temperature high (low) is when preset value (user is adjustable), start corresponding cooling (heating) circuit, reoffer one group without source contact simultaneously.Stop until ambient temperature reaches when setting requires, so move in circles and carry out automatic monitoring.This method defect: 1, by the restriction of heating plate installation site, the air in standing in some compartments can not be heated, and makes the temperature in standing not evenly may produce condensation in some place in cabinet like this.2, change temperature by heater plate air, by heating plate Power Limitation, temperature changing speed may be relatively slow, and the interior pace of change that may occur standing is less than ambient temperature change, and the generation of such condensation is also just inevitable.3, repeatedly start heating plate, temperature changes repeatedly, accelerates the aging speed of some temperature-sensing element (device) or equipment in station.
Summary of the invention
The utility model is in order to solve the problem, devise a kind of automatic dehumidifying system of outdoor switching station, in native system, whether microcontroller environmentally temperature and humidity can start dehumidifier close to condensation condition automatically, and cost is low, energy-conservation, affect less on part, component aging.
The technical solution adopted in the utility model is: a kind of automatic dehumidifying system of outdoor switching station, be arranged at switchyard box house, it is characterized in that: system configuration comprises: microcontroller, dehumidifier and the temperature sensor be connected with the signal input part of microcontroller and humidity sensor, the controlled end of described dehumidifier is connected with the control end of microcontroller.
Described microcontroller comprises the memory of the empirical value reference table storing ambient temperature, humidity and dew point three corresponding relation.
Described cabinet wall is also provided with the air that the horizontal heat insulation sound-absorbing layer that connected by longitudinal heat insulation sound-absorbing layer and perpendicular cross arrangement forms and leads wet heat insulation sound-absorbing layer.
Described longitudinal heat insulation sound-absorbing layer is corrugated.Keeping warmth space can be increased like this, better heat preservation.
Key of the present utility model is: have relation by the generation of the known condensation of principle with humidity and temperature.According to the design feature of switchyard casing self, in place dehumidifier is installed.Configuration humidity sensor is monitored ambient humidity, configuration temperature sensor is monitored ambient humidity, microcontroller is analyzed collecting temperature and humidity information, judge that by tabling look-up whether current environment humidity condition is close to condensation condition, if close to critical condition, then start dehumidifier work, to reach the object reducing relative humidity.
The beneficial effects of the utility model are: 1), compared to conventional dehumidification method cost greatly reduce, and more energy-conservation, take up room also less; 2), suitable installation site can be selected according to the concrete structure of switchyard, can realize evenly dehumidifying to air in station; 3), affect less on part, component aging; 4), the air that increases leads wet heat insulation sound-absorbing layer and has insulation, sound insulation, leads wet effect, in ensureing further to stand while dry and comfortable environment, also serves certain decrease of noise functions.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model.
Fig. 2 is the structural representation that air leads wet heat insulation sound-absorbing layer.
Wherein, 1 is microcontroller, and 2 is dehumidifiers, and 3 is temperature sensors, and 4 is humidity sensors, and 5 is memories, and 6-1 is longitudinal heat insulation sound-absorbing layer, and 6-2 is horizontal heat insulation sound-absorbing layer.
Embodiment
Below in conjunction with embodiment, the utility model is described in detail.
First, the computational methods of dew point are:
1) saturated vapor pressure on water (ice) surface can adopt following formula to calculate:
E in formula
0---saturated vapor pressure when air themperature is 0 DEG C, get E
0=6.11hPa; T---air themperature, DEG C; A, b---parameter, for the water surface (t>0 DEG C), a=7.5, b=237.3; For ice face (t≤0 DEG C), a=9.5, b=265.5.
(2) under relative air humidity f, the water vapor pressure of air can be calculated as follows:
e＝f·E
s
The water vapor pressure of e in formula---air, hPa; The relative humidity of f---air, %; The saturated vapor pressure of Es---air, hPa.
(3) dew point temperature of air can be calculated as follows:
The dew point temperature (DEG C) of Td in formula---air; The water vapor pressure (hPa) of e---air; A, b---parameter, a=7.5, b=237.3.
By can be calculated following table 1, table 2.
Table 1
Table 2
Note: in table, cold insulation, anti-condensation ambient temperature (Ta) get summer air-conditioning outdoor (dry bulb) temperature; Relative humidity Ψ gets the hottest monthly mean relative humidity.
During concrete enforcement, see Fig. 1, the data of above-mentioned table 1, table 2 are stored in memory 5, the ambient temperature data of collection and relative humidity data are sent to microcontroller 1 by temperature sensor 3 and humidity sensor 4 respectively, CPU in microcontroller 1 is carried out data analysis and is tabled look-up from table 1, table 2, if tabled look-up, the absolute value of the dew point of gained and the difference of ambient temperature is less than 10 DEG C, then microcontroller 1 controls dehumidifier 2 and starts; If tabled look-up, the absolute value of the dew point of gained and the difference of ambient temperature is more than or equal to 10 DEG C, then do not start dehumidifier 2.In addition, the air increased in station is led wet heat insulation sound-absorbing layer and is had insulation, sound insulation, leads wet effect, in further guarantee station while dry and comfortable environment, also serves certain decrease of noise functions.Specifically in use, air leads wet heat insulation sound-absorbing layer can adopt cellulose acetate material, has high temperature resistant, indeformable, fire-retardant, moistureproof, intensity high.
Further, above-mentioned said 10 DEG C is according to the day and night temperature experience gained in somewhere, certainly, also can arrange voluntarily according to different regions.Utilize native system to dehumidify greatly to reduce compared to conventional dehumidification method cost, and more energy-conservation, take up room also less; In addition, suitable installation site can be selected according to the concrete structure of station body, can realize evenly dehumidifying to air in station.
Claims (4)
1. the automatic dehumidifying system of an outdoor switching station, be arranged at switchyard box house, it is characterized in that: system configuration comprises: microcontroller (1), dehumidifier (2) and the temperature sensor (3) be connected with the signal input part of microcontroller (1) and humidity sensor (4), the controlled end of described dehumidifier (2) is connected with the control end of microcontroller (1).
2. the automatic dehumidifying system of a kind of outdoor switching station according to claim 1, is characterized in that: described microcontroller (1) comprises the memory (5) of the empirical value reference table storing ambient temperature, humidity and dew point three corresponding relation.
3. the automatic dehumidifying system of a kind of outdoor switching station according to claim 1, is characterized in that: described cabinet wall is also provided with the air that the horizontal heat insulation sound-absorbing layer (6-2) that connected by longitudinal heat insulation sound-absorbing layer (6-1) and perpendicular cross arrangement forms and leads wet heat insulation sound-absorbing layer.
4. the automatic dehumidifying system of a kind of outdoor switching station according to claim 3, is characterized in that: described longitudinal heat insulation sound-absorbing layer (6-1) is corrugated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279848.2U CN204651692U (en) | 2015-05-04 | 2015-05-04 | A kind of automatic dehumidifying system of outdoor switching station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279848.2U CN204651692U (en) | 2015-05-04 | 2015-05-04 | A kind of automatic dehumidifying system of outdoor switching station |
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| Publication Number | Publication Date |
|---|---|
| CN204651692U true CN204651692U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520279848.2U Expired - Fee Related CN204651692U (en) | 2015-05-04 | 2015-05-04 | A kind of automatic dehumidifying system of outdoor switching station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870629A (en) * | 2018-07-12 | 2018-11-23 | 佛山市高捷工业炉有限公司 | A kind of smelting furnace workshop humid control terminal |
-
2015
- 2015-05-04 CN CN201520279848.2U patent/CN204651692U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870629A (en) * | 2018-07-12 | 2018-11-23 | 佛山市高捷工业炉有限公司 | A kind of smelting furnace workshop humid control terminal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 |