CN106598121A - Electric cabinet condensation comprehensive treatment device and treatment method - Google Patents
Electric cabinet condensation comprehensive treatment device and treatment method Download PDFInfo
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- CN106598121A CN106598121A CN201710035201.9A CN201710035201A CN106598121A CN 106598121 A CN106598121 A CN 106598121A CN 201710035201 A CN201710035201 A CN 201710035201A CN 106598121 A CN106598121 A CN 106598121A
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- 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
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Abstract
The invention relates to the technical field of electric cabinet temperature and humidity measurement control, and specifically discloses an electric cabinet condensation comprehensive treatment device and a treatment method thereof. The electric cabinet condensation comprehensive treatment device comprises a micro controller module (1), wherein the micro controller module (1) is connected with a PT1000 sensor (2), an ambient temperature and humidity sensor (3), a control output module (4), a saturated steam pressure calculation module (5) for air, a steam pressure calculation module (6) for air, and a dew point temperature calculation module (7); and the control output module (4) is connected with a heating and dehumidification module (8). The electric cabinet condensation comprehensive treatment device and the treatment method have the advantages of being capable of effectively preventing condensation inside an electric cabinet, convenient in operation and precise in control.
Description
Technical field
The present invention relates to electric cabinet temperature and humidity measurement control technology field, more particularly to a kind of electric cabinet condensation comprehensive treatment device
And administering method.
Background technology
Electric wire and equipment have been covered with it inside the electricity cabinet such as electrical outdoor cabinet, such as terminal box, telecommunication cabinet, when the humidity mistake in cabinet
Greatly, or even during condensation, device may be caused to get rusty, the problems such as service life reduction, safe distance shorten, so as to occurring climbing electricity, dodging
The accidents such as Lip river, blast.Traditional humidity controller, only with the mode of measurement relative air humidity, when humidity reaches setting
Threshold value when, start dehydrating unit dehumidified, this mode can not effectively prevent condensation problem in cabinet, because which only considered
One of condition of product condensation, so anti-condensation purpose can not be really played, and also user is also needed according to varying environment
Threshold value is started to control in artificial setting of going, not only inconvenient, also inaccurate.
Therefore, current electric cabinet condensation controlling device, exist effectively can not prevent condensation in electric cabinet, inconvenient operation,
Control inaccurate problem.
The content of the invention
It is an object of the present invention to provide a kind of electric cabinet condensation comprehensive treatment device and administering method, it has and can have
Effect prevents the characteristics of condensation in electric cabinet, easy to operate, precise control.
Technical scheme：Electric cabinet condensation comprehensive treatment device, including micro controller module, on micro controller module
It is connected to PT1000 sensors, environment humidity sensor, controlled output module, the saturated vapor pressure of air and calculates mould
Block, the water vapor pressure computing module of air and dew point temperature calculate module, are connected with heating and dehumidification in the controlled output module
Module.
In aforesaid electric cabinet condensation comprehensive treatment device, the heating and dehumidification module is heater or heating plate.Can have
The temperature of the electric cabinet inner layer metal plate of effect and quickly rising.
In aforesaid electric cabinet condensation comprehensive treatment device, the heating and dehumidification module is arranged on the inwall of electric cabinet.Can
Temperature that is enough effective and quickly raising electric cabinet inner layer metal plate, will not cause the volume of whole device to become greatly again.
In aforesaid electric cabinet condensation comprehensive treatment device, on the micro controller module, display module is also associated with.Can
Clearly show that the temperature and the controlled state of relative humidity and device of air in the temperature of electric cabinet inner layer metal plate, electric cabinet.
Another kind of technical scheme of the present invention：The administering method of electric cabinet condensation comprehensive treatment device, PT1000 sensors are surveyed
The temperature of the electric cabinet inner layer metal plate of amount, while environment humidity sensor measures the temperature and relative humidity of air in electric cabinet, and
Transfer data to micro controller module；
If the relative humidity of air is carried out according to the following steps less than the setting value in micro controller module in electric cabinet,
The thermometer of air in the electric cabinet that a, the saturated vapor pressure computing module of air are transmitted according to micro controller module
The saturated vapor pressure of air is calculated, and transfers data to micro controller module；
In the electric cabinet that b, the water vapor pressure computing module of air are transmitted according to micro controller module the relative humidity of air and
The saturated vapor pressure of air calculates the water vapor pressure of air, and transfers data to micro controller module；
C, dew point temperature calculate the dew that the water vapor pressure of the air that module is transmitted according to micro controller module calculates air
Point temperature, and transfer data to micro controller module；
D, micro controller module are compared to the electric temperature of cabinet inner layer metal plate and the dew point temperature of air, if in electric cabinet
Dew point temperature of the temperature of layer metallic plate less than air, then micro controller module is by controlled output module control heating and dehumidification mould
Block is heated, until the temperature of electric cabinet inner layer metal plate adds temperature return difference higher than the dew point temperature of air；
If, higher than the setting value in micro controller module, micro controller module is to electric cabinet for the relative humidity of air in electric cabinet
In the temperature of inner layer metal plate and electric cabinet, the temperature of air is compared, if the temperature of electric cabinet inner layer metal plate is less than in electric cabinet
The temperature of air, then micro controller module directly controls heating and dehumidification module by controlled output module and heated, until
The temperature of electric cabinet inner layer metal plate adds temperature return difference higher than the temperature of air in electric cabinet.
In aforesaid administering method, in step a, the computing formula of the saturated vapor pressure computing module of air is,
Saturated vapor pressures of the Es for air in formula, unit is hPa；
E0When being 0 DEG C for air themperature, the saturated vapor pressure of air, takes E0=6.11hPa；
T is the temperature of air in electric cabinet, DEG C；
A, b are 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。
In aforesaid administering method, in step b, the computing formula of the water vapor pressure computing module of air is,
E=fEs
Water vapor pressures of the e for air in formula, unit is hPa；
F is the relative humidity of air in electric cabinet, and unit is %RH；
Saturated vapor pressures of the Es for air, unit is hPa.
In aforesaid administering method, in step c, the computing formula of dew point temperature calculating module is,
In formula, Td is dew point temperature, DEG C；
Water vapor pressures of the e for air, unit is hPa；
A, b be parameter, a=7.5, b=237.3.
In aforesaid administering method, the temperature of the electric cabinet inner layer metal plate higher than air dew point temperature plus temperature time
Temperature return difference in difference is 5～10 DEG C.Preferably ensure under compared with low relative humidity state, be not in that condensation is existing inside electric cabinet
As.
In aforesaid administering method, the temperature of the cabinet inner layer metal plate higher than air in electric cabinet temperature plus temperature time
Temperature return difference in difference is 3～6 DEG C.Preferably ensure under higher relative humidity state, be not in that condensation is existing inside electric cabinet
As.
In aforesaid administering method, setting value 50%RH of relative humidity in the micro controller module.Relative humidity
Setting value is relatively reasonable, without the need for starting to control threshold value according to the artificial setting of going of different environment, conveniently, accurately avoids in electric cabinet
The dew condensation phenomenon in portion.
Compared with prior art, the present invention is by arranging PT1000 sensors, environment humidity sensor, the saturation of air
Water vapor pressure computing module, the water vapor pressure computing module of air and dew point temperature calculate module, draw electric cabinet inner layer metal
The dew point temperature of the temperature and air of plate, by dew point temperature of the micro controller module to the temperature and air of electric cabinet inner layer metal plate
It is compared, and then heat temperature raising is carried out by the corresponding load of controlled output module control, so as to prevents electric cabinet inner layer metal
Hardened dew, it is ensured that the safe operation of each part in electric cabinet；The present invention can be provided two kinds under high humidity and low humidity pattern simultaneously
Different control methods, not only using simple, convenient, and effect is preferably, without the need for human intervention whole operation process, without
Consider offering question.Therefore, the present invention has can effectively prevent the characteristics of condensation in electric cabinet, easy to operate, precise control.
Description of the drawings
Fig. 1 is the structured flowchart of the present invention；
Fig. 2 is the flow chart of the present invention.
Labelling in accompanying drawing for：1- micro controller modules, 2-PT1000 sensors, 3- environment humidity sensors, 4- controls
Output module processed, the saturated vapor pressure computing module of 5- air, the water vapor pressure computing module of 6- air, 7- dew-point hygrometers
Calculate module, 8- heating and dehumidification modules, 9- display modules.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment 1.Electric cabinet condensation comprehensive treatment device, is constituted as shown in figure 1, including micro controller module 1, microcontroller
It is connected to PT1000 sensors 2, environment humidity sensor 3, the saturation water of controlled output module 4, air to steam in module 1
The water vapor pressure computing module 6 of vapour pressure computing module 5, air and dew point temperature calculate module 7, in the controlled output module 4
It is connected with heating and dehumidification module 8.The heating and dehumidification module 8 is heater or heating plate.The heating and dehumidification module setting 8 exists
On the inwall of electric cabinet.Display module 9 is also associated with the micro controller module 1.PT1000 sensors are used to measure in electric cabinet
The temperature of layer metallic plate；Environment humidity sensor is used for the temperature and relative humidity for measuring electric cabinet inner air；The water of air
Vapour pressure computing module is used for the water vapor pressure for calculating air；The saturated vapor pressure computing module of air is used to calculate air
Saturated vapor pressure；Dew point temperature calculates module to be used to calculate the dew point temperature of electric cabinet inner air；Controlled output module is used for
The work of heating and dehumidification module of the control on electric cabinet inwall metallic plate, improves the temperature of electric cabinet inner layer metal plate inwall；
Display module is used to show the temperature of inner layer metal plate, the humiture of environment and controlled state；It is right that micro controller module is used for
The collection and control of data.
Embodiment 2.The administering method of electric cabinet condensation comprehensive treatment device, is constituted as depicted in figs. 1 and 2,
S1:PT1000 sensors 2 measure the temperature of electric cabinet inner layer metal plate, while environment humidity sensor 3 measures electricity
The temperature and relative humidity of air in cabinet, and transfer data to micro controller module 1；
S2:If the relative humidity of air enters according to the following steps less than the setting value in micro controller module 1 in electric cabinet
OK,
S2a, the saturated vapor pressure computing module 5 of air are transmitted according to micro controller module 1
Electric cabinet in the temperature of air calculate the saturated vapor pressure of air, and transfer data to micro controller module
1；The computing formula of the saturated vapor pressure computing module 5 of air is,
Saturated vapor pressures of the Es for air in formula, unit is hPa；
E0When being 0 DEG C for air themperature, the saturated vapor pressure of air, takes E0=6.11hPa；
T is the temperature of air in electric cabinet, DEG C；
A, b are 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。
In the electric cabinet that S2b, the water vapor pressure computing module 6 of air are transmitted according to micro controller module 1, air is relatively wet
The saturated vapor pressure of degree and air calculates the water vapor pressure of air, and transfers data to micro controller module 1；Air
The computing formula of water vapor pressure computing module 6 is,
E=fEs
Water vapor pressures of the e for air in formula, unit is hPa；
F is the relative humidity of air in electric cabinet, and unit is %RH；
Saturated vapor pressures of the Es for air, unit is hPa.
S2c, dew point temperature calculate the water vapor pressure of the air that module 7 is transmitted according to micro controller module 1 and calculate air
Dew point temperature, and transfer data to micro controller module 1；Dew point temperature calculates the computing formula of module 7,
In formula, Td is dew point temperature, DEG C；
Water vapor pressures of the e for air, unit is hPa；
A, b be parameter, a=7.5, b=237.3.
The electric temperature of cabinet inner layer metal plate of S2d, micro controller module 1 pair and the dew point temperature of air are compared, if electric
Dew point temperature of the temperature of cabinet inner layer metal plate less than air, then micro controller module 1 is by the control heating of controlled output module 4
Dehumidification module 8 is heated, until the temperature of electric cabinet inner layer metal plate adds temperature return difference higher than the dew point temperature of air；Temperature
Return difference is 5～10 DEG C；Preferable temperature return difference is 6～8 DEG C.
S2：If the relative humidity of air is higher than the setting value in micro controller module 1 in electric cabinet；
S2e：Then in the temperature and electric cabinet of the electric cabinet inner layer metal plate of micro controller module 1 pair, the temperature of air is compared,
If the temperature of electric cabinet inner layer metal plate is less than the temperature of air in electric cabinet；
S2f：So by controlled output module 4, directly control heating and dehumidification module 8 is heated micro controller module 1,
Until the temperature of electric cabinet inner layer metal plate adds temperature return difference higher than the temperature of air in electric cabinet；Temperature return difference is 3～6 DEG C；It is excellent
Temperature return difference is selected to be 4～5 DEG C.
The present invention operation principle be：
The present invention is also a kind of digital transformer winding temperature measuring device, and its operation principle is：Ambient temperature and humidity is passed
The temperature and relative humidity of air in the measurement cabinet of sensor 3；Thermometer of the saturated vapor pressure computing module 5 of air according to air
Calculate the saturated vapor pressure of air；Saturation of the water vapor pressure computing module 6 of air according to the relative humidity and air of air
Water vapor pressure calculates the water vapor pressure of current air；Dew point temperature calculates water vapor pressure of the module 7 according to air；Simultaneously
PT1000 sensors 2 measure the temperature of electric cabinet inwall；Micro controller module 1 first judges the relative humidity of environment in cabinet, in low humidity
In the environment of, such as below 50%RH, the dew point temperature of the temperature and air of the more electric cabinet inwall of micro controller module, when in electric cabinet
When the temperature of wall is less than the dew point temperature of air, heating and dehumidification module pair of the control of controlled output module 4 installed in electric cabinet inwall
The metallic plate of electric cabinet inwall is heated up, until the dew point temperature that the temperature of electric cabinet inwall metallic plate is higher than air is returned plus temperature
During difference, controlled output module 4 stops heating and dehumidification module 8 and works.In the environment of high humidity, such as more than 50%RH, microcontroller
Module 1 compares the temperature of the temperature and air of electric cabinet inwall, when the temperature of electric cabinet inwall is less than air themperature, controlled output mould
The control of block 4 heats up installed in the electric cabinet inwall metallic plate of heating and dehumidification module 8 pairs of electric cabinet inwall, until electric cabinet inwall metal
When the temperature of plate adds temperature return difference higher than the ambient temperature of air, controlled output module 4 stops heating and dehumidification module 8 and works.
Whole process display module 9 can all show temperature, ambient temperature and humidity and the controlled output state of electric cabinet inwall.Unit hPa table
Show hundred handkerchiefs.
The present invention is calculated by arranging the saturated vapor pressure of PT1000 sensors 2, environment humidity sensor 3, air
The water vapor pressure computing module 6 of module 5, air and dew point temperature calculate module 7, draw electric cabinet inner layer metal plate temperature and
The dew point temperature of air, is compared by 1 pair of electric temperature of cabinet inner layer metal plate of micro controller module and the dew point temperature of air,
Further controlling corresponding load by controlled output module 4 carries out heat temperature raising, so as to prevent electric cabinet inner layer metal plate condensation, protects
The safe operation of each part in electric cabinet is demonstrate,proved；The present invention can provide high humidity and two kinds of different controls under low humidity pattern simultaneously
Method, not only uses simply, conveniently, and effect is preferably, without the need for human intervention whole operation process, asks without consideration setting
Topic.Therefore, the present invention has can effectively prevent the characteristics of condensation in electric cabinet, easy to operate, precise control.The present invention is fully examined
The method for having considered the condition and destruction condensation of condensation generation, and distinguished controlling parties different under high humidity and low humidity pattern
Method, not only also good than traditional dehumidification mode using simple, convenient, effect, solving tradition can not by reducing air humidity
The problem of electric cabinet inwall condensation is effectively prevented, without the need for human intervention whole operation process, offering question need not be considered.Microcontroller
Setting value 50%RH of relative humidity in module 1.
Claims (10)
1. electric cabinet condensation comprehensive treatment device, it is characterised in that：Including micro controller module (1), divide on micro controller module (1)
PT1000 sensors (2), environment humidity sensor (3), controlled output module (4), the saturated vapor of air are not connected with
Pressure computing module (5), the water vapor pressure computing module (6) of air and dew point temperature calculate module (7), the controlled output module
(4) heating and dehumidification module (8) is connected with.
2. electric cabinet condensation comprehensive treatment device according to claim 1, it is characterised in that：The heating and dehumidification module (8)
For heater or heating plate.
3. electric cabinet condensation comprehensive treatment device according to claim 1, it is characterised in that：The heating and dehumidification module is arranged
(8) on the inwall of electric cabinet.
4. electric cabinet condensation comprehensive treatment device as claimed in any of claims 1 to 3, it is characterised in that：It is described micro-
Display module (9) is also associated with controller module (1).
5. the administering method of electric cabinet condensation comprehensive treatment device, it is characterised in that：
The temperature of the electric cabinet inner layer metal plate of PT1000 sensors (2) measurement, while in the electric cabinet of environment humidity sensor (3) measurement
The temperature and relative humidity of air, and transfer data to micro controller module (1)；
If the relative humidity of air is carried out according to the following steps less than the setting value in micro controller module (1) in electric cabinet,
The temperature of air in the electric cabinet that a, the saturated vapor pressure computing module (5) of air are transmitted according to micro controller module (1)
The saturated vapor pressure of air is calculated, and transfers data to micro controller module (1)；
The relative humidity of air in the electric cabinet that b, the water vapor pressure computing module (6) of air are transmitted according to micro controller module (1)
The water vapor pressure of air is calculated with the saturated vapor pressure of air, and transfers data to micro controller module (1)；
C, dew point temperature calculate the water vapor pressure of the air that module (7) is transmitted according to micro controller module (1) and calculate air
Dew point temperature, and transfer data to micro controller module (1)；
D, micro controller module (1) are compared to the electric temperature of cabinet inner layer metal plate and the dew point temperature of air, if in electric cabinet
Dew point temperature of the temperature of layer metallic plate less than air, then micro controller module (1) is by controlled output module (4) control heating
Dehumidification module (8) is heated, until the temperature of electric cabinet inner layer metal plate adds temperature return difference higher than the dew point temperature of air；
If, higher than the setting value in micro controller module (1), micro controller module (1) is to electricity for the relative humidity of air in electric cabinet
In the temperature of cabinet inner layer metal plate and electric cabinet, the temperature of air is compared, if the temperature of electric cabinet inner layer metal plate is less than electric cabinet
The temperature of interior air, then directly enter by control heating and dehumidification module (8) by controlled output module (4) for micro controller module (1)
Row heating, until the temperature of electric cabinet inner layer metal plate adds temperature return difference higher than the temperature of air in electric cabinet.
6. administering method according to claim 5, it is characterised in that：The saturated vapor pressure meter of air in step a
Calculate module (5) computing formula be,
Saturated vapor pressures of the Es for air in formula, unit is hPa；
E0When being 0 DEG C for air themperature, the saturated vapor pressure of air, takes E0=6.11hPa；
T is the temperature of air in electric cabinet, DEG C；
A, b are 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。
7. administering method according to claim 5, it is characterised in that：In step b, the water vapor pressure of air calculates mould
The computing formula of block (6) is,
E=fEs
Water vapor pressures of the e for air in formula, unit is hPa；
F is the relative humidity of air in electric cabinet, and unit is %RH；
Saturated vapor pressures of the Es for air, unit is hPa.
8. administering method according to claim 5, it is characterised in that：In step c, dew point temperature calculates module (7)
Computing formula is,
In formula, Td is dew point temperature, DEG C；
Water vapor pressures of the e for air, unit is hPa；
A, b be parameter, a=7.5, b=237.3.
9. administering method according to claim 5, it is characterised in that：The temperature of the electric cabinet inner layer metal plate is higher than air
Dew point temperature be 5～10 DEG C plus the temperature return difference in temperature return difference.
10. the administering method according to any one in claim 5 to 9, it is characterised in that：The cabinet inner layer metal plate
Temperature is 3～6 DEG C plus the temperature return difference in temperature return difference higher than the temperature of air in electric cabinet.
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| CN201710035201.9A CN106598121A (en) | 2017-01-17 | 2017-01-17 | Electric cabinet condensation comprehensive treatment device and treatment method |
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|---|---|---|---|
| CN201710035201.9A CN106598121A (en) | 2017-01-17 | 2017-01-17 | Electric cabinet condensation comprehensive treatment device and treatment method |
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| CN110471132A (en) * | 2019-08-23 | 2019-11-19 | 国网山东省电力公司济南供电公司 | The method for monitoring outdoor ring main unit or feeder pillar condensation on-line |
| RU2720928C1 (en) * | 2017-12-08 | 2020-05-14 | Дунгуань Сити Симплвел Текнолоджи Ко., Лтд | Electronic cooling system without formation of condensate and method of preventing formation of condensate for this system |
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Application publication date: 20170426 |