CN104460787A - Damproof control method for electric control cabinet - Google Patents
Damproof control method for electric control cabinet Download PDFInfo
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- CN104460787A CN104460787A CN201410615906.4A CN201410615906A CN104460787A CN 104460787 A CN104460787 A CN 104460787A CN 201410615906 A CN201410615906 A CN 201410615906A CN 104460787 A CN104460787 A CN 104460787A
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- electrical control
- humidity
- control cubicles
- air
- moisture
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Abstract
The invention discloses a damproof control method for an electric control cabinet. A temperature inductor, a humidity inductor, a heating module, an evaporator and an electromagnetic valve are arranged in the electric control cabinet, by means of the electromagnetic valve, one end of the evaporator is connected with a refrigerating pipeline of an external refrigerating system through a pipeline, and the other end of the evaporator is connected with a compressor of the external refrigerating system through a pipeline; then, the condensation humidity of air in the electric control cabinet is calculated according to the temperature of the air in the electric control cabinet, and the condensation humidity is added to a preset humidity isolation value so that work humidity can be obtained. When the humidity of the air in the cabinet is larger than or equal to the work humidity, the electromagnetic valve is opened if the external refrigerating system works; if the external refrigerating system does not work, the heating module is controlled to heat the air in the cabinet. When the humidity of the air in the cabinet is smaller than the work humidity, the heating module is controlled to stop work and the electromagnetic valve is closed. According to the method, a structure is simple, the external refrigerating system is made full use of, energy is saved, and it is kept that the electric control cabinet is dry.
Description
Technical field
The present invention relates to Moistureproof electric control cabinet, particularly relate to a kind of electrical control cubicles moisture-proof control method.
Background technology
At present, refrigeration system has been widely used in the industry-by-industries such as iron and steel, oil, chemical industry, electric power, building materials, air-conditioning, machine-building, automobile, light textile, communications and transportation, environmental protection and entertainment at home and abroad.
In general, refrigeration system all needs to rely on the large part of refrigeration four to reach refrigeration object: compressor, condenser, restricting element and evaporator.
Compressor is the power of refrigeration cycle, it is ceaselessly rotated by motor run, it is except extracting evaporator inner vapor in time out, outside maintenance low-temp low-pressure, also improve the pressure and temperature of refrigerant vapour by compression, create the condition of the heat of refrigerant vapour outwardly surrounding medium transfer.Steam compressed to high-temperature high-pressure state by low-temperature low-pressure refrigerant, condensating refrigerant steam can be carried out with the air of normal temperature or water as heat eliminating medium.
Condenser is a heat-exchange apparatus, effect utilizes environment cools medium (air or water), the heat of the High Temperature High Pressure refrigerant vapor from compressor is taken away, makes high-temperature high-pressure refrigerant steam cool, be condensed into the refrigerant liquid of high normal pressure and temperature.It is worth mentioning that, condenser is becoming refrigerant vapour in the process of refrigerant liquid, and pressure is constant, is still high pressure.
The refrigerant liquid of high normal pressure and temperature is directly sent into low temperature dirt evaporator, according to saturation pressure and saturation temperature---correspondence principle, is reduced the pressure of refrigerant liquid, thus reduces the temperature of refrigerant liquid.The refrigerant liquid of high normal pressure and temperature is passed through dropping equipment---restricting element, obtains low-temperature low-pressure refrigerant, then sends into heat absorption evaporation in evaporator.Refrigerator in daily life, air-conditioning commonly use kapillary as restricting element.
Evaporator is also a heat-exchange apparatus.Low-temperature low-pressure refrigerant liquid after throttling evaporates (boiling) within it and becomes steam, absorbs the heat of cooled material, mass temperature is declined, reaches freezing, the object of chilled food.In air conditioner, cooling ambient air, reaches the effect to air cooling-down, dehumidifying.The evaporating temperature of evaporator inner refrigerant is lower, and the temperature of cooled object is also lower.In refrigerator, the evaporating temperature adjustment of general cold-producing medium is at-26 DEG C ~-20 DEG C, adjusts at 5 DEG C ~ 8 DEG C in air conditioner.
Electrical control cubicles is assembled in closed or semiclosed metal safe by electrical wiring requirement by switchgear, measurement instrument, protective device and utility appliance or shields on width; its layout should meet the requirement that electric system normally runs; easy access, does not jeopardize the switch board/case of the safety of the person and surrounding devices.Comprise power distribution cabinet, panel box, electric control cabinet etc., can connect or point deenergizing by manual or automatic switch during normal operation.Circuit or warning is cut off by protective device when fault or irregular operating.Operating various parameter can be shown by means of measurement instrument, also can adjust some electric parameter, point out departing from normal operating conditions or send signal.Be usually used in each, join, in electric substation.
In industrial trade application, relative humidity high field institute is often inevitably designed in the electrical control cubicles that extraneous refrigeration system is supporting, but main logic unit such as electric components storage condition, the working environments such as air switch, A.C. contactor, PLC has certain requirement in electrical control cubicles, as the requirement of siemens PLC PLC storage condition is: temperature-40 DEG C-70 DEG C, humidity 0%-95%; Operating environment requirements is: temperature 0 DEG C-55 DEG C, humidity 0%-95%, and in electrical control cubicles, air runs into electric components at humid tropical condition and may occur that condensation drips situation, thus there is potential safety hazard.
Existing electrical control cubicles generally all can not utilize extraneous refrigeration system fully, the situation that can not effectively prevent condensation from dripping.
Patent " a kind of electrical control cubicles with dust and moisture device " (application number: 201420022697.8 applyings date: 2014-01-15) discloses a kind of electrical control cubicles with dust and moisture device, comprise cabinet and control module, described control module is arranged in cabinet, top and the bottom of described cabinet two sides are respectively arranged with air vent, it is characterized in that: inside described air vent, be provided with screen pack, aluminium alloy rack is provided with after the screen pack at top, air exhauster is provided with after the screen pack of bottom dome, Dehumidification controlling unit is also provided with in described cabinet, humidity sensor and well heater, described well heater is arranged on by aluminium alloy rack, be connected with aluminium alloy rack, described humidity sensor, air exhauster is connected with Dehumidification controlling unit with well heater, external dust-break sheet is provided with outside described air vent.Structure of the present invention is simple, easy to implement, can realize dust-proof filter dirt, and can remove the too much steam of electrical control cubicles inside, realizes moistureproof.
The protection against the tide although the method can dehumidify, its refrigeration system that fully application is not extraneous, consumes energy larger.
Summary of the invention
Technical matters to be solved by this invention is for defect involved in background technology, provides a kind of electrical control cubicles moisture-proof control method.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of electrical control cubicles moisture-proof control method, comprises following steps:
Step 1), electrical control cubicles arranges the new wind entrance for ventilating and exhaust outlet;
Step 2), difference set temperature inductor and humidity sensor in electrical control cubicles, be respectively used to the temperature and humidity gathering air in electrical control cubicles;
Step 3), arranges heating module in electrical control cubicles, for heating the air in electrical control cubicles;
Step 4), arranges evaporator and solenoid valve in electrical control cubicles, and one end of evaporator is connected through the refrigeration piping of solenoid valve with external refrigeration system by pipeline, and the other end is connected by the compressor of pipeline with external refrigeration system;
Step 5), calculates the condensation humidity of air in electrical control cubicles according to the thermometer of air in electrical control cubicles;
Step 6), deducts default humidity separation number by the condensation humidity calculated and obtains working relative humidity;
Step 7), makes comparisons the humidity of air in electrical control cubicles and described working relative humidity;
Step 8), when external refrigeration system works and in electrical control cubicles, the humidity of air is more than or equal to working relative humidity time, open described solenoid valve;
Step 9), when external refrigeration system does not work and in electrical control cubicles, the humidity of air is more than or equal to working relative humidity, controls heating module and heats the air in electrical control cubicles;
Step 10), when the humidity of air is less than working relative humidity in electrical control cubicles, controls heating module and quits work and close described solenoid valve.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, described temperature sensor adopts IC temperature sensor.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, described IC temperature sensor adopts DS18B20 type temperature sensor.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, described humidity sensor adopts electric resistance moisture sensor.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, the model of described electric resistance moisture sensor is CM-R type.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1. according to the condensation humidity calculating air of the temperature dynamic of air, deducted default humidity value again, obtain working relative humidity, automatically carry out in humidity in electrical control cubicles reaches working relative humidity dehumidifying, without the need to manual operation, also always in running order without the need to dehumidifying section, save the energy;
2., when outside refrigeration system work, make full use of external refrigeration system and cool-down dehumidification is carried out to working cabined, save the energy;
3. when outside refrigeration system does not work, utilize heating module to heat air, make air be not easy condensation, avoid causing the accident.
Embodiment
Below technical scheme of the present invention is described in further detail:
The invention discloses a kind of electrical control cubicles moisture-proof control method, comprise following steps:
Step 1), electrical control cubicles arranges the new wind entrance for ventilating and exhaust outlet;
Step 2), difference set temperature inductor and humidity sensor in electrical control cubicles, be respectively used to the temperature and humidity gathering air in electrical control cubicles;
Step 3), arranges heating module in electrical control cubicles, for heating the air in electrical control cubicles;
Step 4), arranges evaporator and solenoid valve in electrical control cubicles, and one end of evaporator is connected through the refrigeration piping of solenoid valve with external refrigeration system by pipeline, and the other end is connected by the compressor of pipeline with external refrigeration system;
Step 5), calculates the condensation humidity of air in electrical control cubicles according to the thermometer of air in electrical control cubicles;
Step 6), deducts default humidity separation number by the condensation humidity calculated and obtains working relative humidity;
Step 7), makes comparisons the humidity of air in electrical control cubicles and described working relative humidity;
Step 8), when external refrigeration system works and in electrical control cubicles, the humidity of air is more than or equal to working relative humidity time, open described solenoid valve;
Step 9), when external refrigeration system does not work and in electrical control cubicles, the humidity of air is more than or equal to working relative humidity, controls heating module and heats the air in electrical control cubicles;
Step 10), when the humidity of air is less than working relative humidity in electrical control cubicles, controls heating module and quits work and close described solenoid valve.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, described temperature sensor adopts IC temperature sensor.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, described IC temperature sensor adopts DS18B20 type temperature sensor.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, described humidity sensor adopts electric resistance moisture sensor.
As the further prioritization scheme of a kind of electrical control cubicles moisture-proof control method of the present invention, the model of described electric resistance moisture sensor is CM-R type.
When solenoid valve is opened, evaporator is started working, and carries out cool-down dehumidification to the air in electrical control cubicles, and the water of dehumidifying is discharged through osculum.
During heating module work, because hot-air density ratio cold air density is little, so air is discharged from electrical control cubicles exhaust outlet, according to air-treatment principle, this is that an approximate water capacity is constant, and temperature raises, the process that relative humidity reduces, relative humidity reduce after, air run into electrical control cubicles electric components not easily condensation drip, so just realize moisture-proof role.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an electrical control cubicles moisture-proof control method, is characterized in that, comprises following steps:
Step 1), electrical control cubicles arranges the new wind entrance for ventilating and exhaust outlet;
Step 2), difference set temperature inductor and humidity sensor in electrical control cubicles, be respectively used to the temperature and humidity gathering air in electrical control cubicles;
Step 3), arranges heating module in electrical control cubicles, for heating the air in electrical control cubicles;
Step 4), arranges evaporator and solenoid valve in electrical control cubicles, and one end of evaporator is connected through the refrigeration piping of solenoid valve with external refrigeration system by pipeline, and the other end is connected by the compressor of pipeline with external refrigeration system;
Step 5), calculates the condensation humidity of air in electrical control cubicles according to the thermometer of air in electrical control cubicles;
Step 6), deducts default humidity separation number by the condensation humidity calculated and obtains working relative humidity;
Step 7), makes comparisons the humidity of air in electrical control cubicles and described working relative humidity;
Step 8), when external refrigeration system works and in electrical control cubicles, the humidity of air is more than or equal to working relative humidity time, open described solenoid valve;
Step 9), when external refrigeration system does not work and in electrical control cubicles, the humidity of air is more than or equal to working relative humidity, controls heating module and heats the air in electrical control cubicles;
Step 10), when the humidity of air is less than working relative humidity in electrical control cubicles, controls heating module and quits work and close described solenoid valve.
2. electrical control cubicles moisture-proof control method according to claim 1, is characterized in that, described temperature sensor adopts IC temperature sensor.
3. electrical control cubicles moisture-proof control method according to claim 2, is characterized in that, described IC temperature sensor adopts DS18B20 type temperature sensor.
4. electrical control cubicles moisture-proof control method according to claim 1, is characterized in that, described humidity sensor adopts electric resistance moisture sensor.
5. electrical control cubicles moisture-proof control method according to claim 4, is characterized in that, the model of described electric resistance moisture sensor is CM-R type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615906.4A CN104460787A (en) | 2014-11-06 | 2014-11-06 | Damproof control method for electric control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615906.4A CN104460787A (en) | 2014-11-06 | 2014-11-06 | Damproof control method for electric control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104460787A true CN104460787A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410615906.4A Withdrawn CN104460787A (en) | 2014-11-06 | 2014-11-06 | Damproof control method for electric control cabinet |
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| CN (1) | CN104460787A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5144811A (en) * | 1991-01-10 | 1992-09-08 | Hughes Aircraft Company | Condensation control system for water-cooled electronics |
| JPH0888493A (en) * | 1994-09-20 | 1996-04-02 | Hitachi Ltd | Electronic apparatus |
| CN202583923U (en) * | 2012-05-03 | 2012-12-05 | 长春工程学院 | Fuzzy power-adjusting condensation controller |
| CN102830728A (en) * | 2012-08-17 | 2012-12-19 | 浙江盾安机电科技有限公司 | Moistureproof electric control cabinet |
| CN103235621A (en) * | 2013-04-28 | 2013-08-07 | 成都思晗科技有限公司 | Mist-preventing intelligent control system for cabinet |
| CN203661442U (en) * | 2014-01-15 | 2014-06-18 | 四川蓉腾自动化设备有限公司 | Electric control cabinet having dustproof and moistureproof device |
-
2014
- 2014-11-06 CN CN201410615906.4A patent/CN104460787A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5144811A (en) * | 1991-01-10 | 1992-09-08 | Hughes Aircraft Company | Condensation control system for water-cooled electronics |
| JPH0888493A (en) * | 1994-09-20 | 1996-04-02 | Hitachi Ltd | Electronic apparatus |
| CN202583923U (en) * | 2012-05-03 | 2012-12-05 | 长春工程学院 | Fuzzy power-adjusting condensation controller |
| CN102830728A (en) * | 2012-08-17 | 2012-12-19 | 浙江盾安机电科技有限公司 | Moistureproof electric control cabinet |
| CN103235621A (en) * | 2013-04-28 | 2013-08-07 | 成都思晗科技有限公司 | Mist-preventing intelligent control system for cabinet |
| CN203661442U (en) * | 2014-01-15 | 2014-06-18 | 四川蓉腾自动化设备有限公司 | Electric control cabinet having dustproof and moistureproof device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20150325 |