CN203588096U - Humiture control device of control cabinet of main control system of wind turbine generator unit in high moist environment - Google Patents
Humiture control device of control cabinet of main control system of wind turbine generator unit in high moist environment Download PDFInfo
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- CN203588096U CN203588096U CN201320622007.8U CN201320622007U CN203588096U CN 203588096 U CN203588096 U CN 203588096U CN 201320622007 U CN201320622007 U CN 201320622007U CN 203588096 U CN203588096 U CN 203588096U
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Abstract
The utility model discloses a humiture control device of a control cabinet of a main control system of a wind turbine generator unit in a high moist environment. The humiture control device comprises an alternate current power supply, a humiture controller, an electric heater, an alternate current/direct current converting power supply and a control system, wherein the anlternate current power supply is in electrical connection with the alternate current/direct current converting power supply through the humiture controller, the alternate current/direct current converting power supply is in electrical connection with the control system, and the humiture controller is in electrical connection with the electric heater. The humiture control device is beneficial in that: a technical scheme in which a humiture protection circuit is added at an input terminal of the alternate current/direct current converting power supply power supply device, is employed, so that humiture control can be carried out before the environment is too bad for the power supply device to work, thus machine starting protection is achieved; and humiture control is carried out in the operation process of the device, so that a fan main control system control cabinet is made adaptable for high moist climate environment, thus advantages of wide applicable environment and more comprehensive protection system are achieved.
Description
Technical field
The utility model relates to Temperature and Humidity Control technical field; Be particularly related to one to high humidity environment, the strict temperature and humidity control device of protection master control system switch board control module.
Background technology
In control system of wind turbines switch board, there is a large amount of electron devices, as PLC module, scrambler etc., higher to working environment humidity requirement, do not allow to work under high humidity and condensation condition, and wind-powered electricity generation unit work under bad environment, humiture changes greatly.
In the prior art, mainly for carrying out Temperature and Humidity Control under low temperature, normal temperature environment condition.Wherein humidity control is by improving the environment temperature in switch board, thereby reduces relative humidity, and in switch board, the rising of environment temperature realizes by electric heater.
As shown in Figure 1, when former master control system switch board opens machine, be first that AC power is 400VAC power supply, then, ac-dc conversion power supply is 24VDC loop power supply, now, master control system just can detect humiture.
As; temperature is lower than cryoprotection threshold value; trigger ac contactor coil; contactor normally opened contact is connected, the work of cabinet internal heater, now; the A.C. contactor in control PLC system power supply loop is in release conditions; until environment temperature is during higher than cryoprotection threshold value in switch board, this A.C. contactor just can be connected, and object is to avoid the open machine of control system when ultra-low temperature surroundings.
As while opening machine temperature higher than cryoprotection threshold value; and humidity is during also higher than high humility protection threshold value; the A.C. contactor in control PLC system power supply loop is because being only subject to temperature control; now; still in attracting state; the main contacts of A.C. contactor switches on power, and makes control system under the environmental baseline of high humidity or condensation, still can obtain the electric machine that opens.Meanwhile, the main contacts that humidity controller triggers the ac contactor coil of switch board internal heater switches on power, and makes well heater work; after in switch board, environment temperature raises gradually; relative humidity just can reduce gradually, and when humidity is protected threshold value lower than high humility, well heater stops heating.
, under high humidity environment condition, there is following shortcoming in switch board of the prior art:
The one, ac-dc conversion power supply 24VDC power-supply unit mainly contains Switching Power Supply and direct current ups power, and there is a large amount of electron devices inside, does not allow to work under high humidity or condensation condition.The ac power input end unprotected circuit of equipment, in temperature, higher than cryoprotection threshold value, humidity during also higher than high humility protection threshold value, control system can open machine work not meeting under the high humidity of condition of work or condensation condition, has potential safety hazard.The 2nd, Temperature and Humidity Control loop only, after ac-dc conversion power supply 24VDC power supply, just can work, and ac-dc conversion power supply 24VDC power-supply unit itself does not allow to work under high humidity or condensation condition.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of high humidity environment wind-powered electricity generation unit master control system switch board temperature and humidity control device that can carry out Temperature and Humidity Control before power-supply unit cannot be worked because of environmental baseline is provided.
The technical scheme that the utility model adopts is, a kind of high humidity environment wind-powered electricity generation unit master control system switch board temperature and humidity control device, comprise, AC power, temperature and humidity controller, electric heater, ac-dc conversion power supply and control system, described AC power is electrically connected with ac-dc conversion power supply by temperature and humidity controller, and described ac-dc conversion power supply is electrically connected with control system; Described temperature and humidity controller is electrically connected with electric heater.
Described AC power is 230VAC, and ac-dc conversion power supply is 24VDC.
Described temperature and humidity controller, comprise, the first humidity controller SKQ1, the second humidity controller SKQ2, the first temperature controller WKQ1, the second temperature controller WKQ2 and the A.C. contactor KM1 of built-in humidity sensor and condensation sensor, the input end 3,4 of described the first humidity controller SKQ1 is electrically connected with AC power, and the normally closed contact of described built-in humidity sensor 1,2, the normally closed contact 5,6 of built-in condensation sensor and the normally opened contact of the first temperature controller WKQ1 and A.C. contactor KM1 control end coil are connected in series in AC power; The main contacts KM1-1 of described A.C. contactor KM1 is electrically connected with the power input of ac-dc conversion power supply; After the normally closed contact parallel connection of the normally opened contact of described the second humidity controller SKQ2 and the second temperature controller WKQ2, be connected in series in AC power with electric heater; The direct current output of described ac-dc conversion power supply is electrically connected with the control system of switch board.
The beneficial effects of the utility model are; owing to adopting the technical scheme that opens machine temperature-humidity protecting circuit in the increase of ac-dc conversion Power supply equipment input end; can before cannot working because of environmental baseline, power-supply unit carry out Temperature and Humidity Control; realization is opened organizational security and is protected; and; in the operating Temperature and Humidity Control of equipment, make blower fan master control system switch board can adapt to the climatic environment of high humidity type, have suitable environment more extensively, the system protection advantage such as more comprehensively.
Accompanying drawing explanation
Fig. 1 is prior art apoplexy group of motors master control system temperature and humidity control device composition block diagram;
Fig. 2 is the utility model wind-powered electricity generation unit master control system temperature and humidity control device composition block diagram;
Fig. 3 is the utility model wind-powered electricity generation unit master control system temperature and humidity control device electrical schematic diagram.
In figure:
10, AC power 20, temperature and humidity controller 30, electric heater
40, ac-dc conversion power supply 50, control system.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figures 2 and 3, a kind of high humidity environment wind-powered electricity generation of the utility model unit master control system switch cubicle temperature and humidity control device, comprise, AC power 10, temperature and humidity controller 20, electric heater 30, ac-dc conversion power supply 40 and control system 50, AC power 10 is electrically connected with ac-dc conversion power supply 40 by temperature and humidity controller 20, and ac-dc conversion power supply 40 is electrically connected with control system 50; Described temperature and humidity controller 20 is electrically connected with electric heater 30.AC power 10 is 230VAC, and ac-dc conversion power supply 40 is 24VDC.
Described temperature and humidity controller 20, comprise, the first humidity controller SKQ1, the second humidity controller SKQ2, the first temperature controller WKQ1, the second temperature controller WKQ2 and the A.C. contactor KM1 of built-in humidity sensor and condensation sensor, the input end 3,4 of described the first humidity controller SKQ1 is electrically connected with AC power 10, and the normally closed contact of described built-in humidity sensor 1,2, the normally closed contact 5,6 of built-in condensation sensor and the normally opened contact of the first temperature controller WKQ1 and A.C. contactor KM1 control end coil are connected in series in AC power 10; The main contacts KM1-1 of described A.C. contactor KM1 is electrically connected with the power input of ac-dc conversion power supply P1; After the normally closed contact parallel connection of the normally opened contact of described the second humidity controller SKQ2 and the second temperature controller WKQ2, be connected in series in AC power 10 with electric heater H1; The direct current output of described ac-dc conversion power supply P1 is electrically connected with the control system 50 of switch board.
L, N are the AC power 230VAC of the first humidity controller SKQ1, electric heater H1, ac-dc conversion power supply P1.
The humidity sensor of the first humidity controller SKQ1, condensation sensor are built-in, and the humidity sensor of the second humidity controller SKQ2 is built-in, and the temperature sensor of the first temperature controller WKQ1, the second temperature controller WKQ2 is built-in.
Principle of work of the present utility model is, in the increase of ac-dc conversion power supply P1 power-supply unit input side, open machine humidity holding circuit, when in switch board, envionmental humidity is greater than the threshold value of setting or during condensation sensor-triggered output circuit, well heater in switch board is started working, now, the main contacts KM1-1 of the A.C. contactor KM1 of control ac-dc conversion power supply P1 power-supply unit input power is in off-state, until environment temperature raises, when relative humidity is reduced to the threshold value of setting, the main contacts KM1-1 of A.C. contactor KM1 connects, ac-dc conversion power supply P1 input circuit obtains electric, control system starts normal startup.The AC power 10 of temperature and humidity control circuit changes to 230VAC by original 24VDC, can before the power-supply unit of ac-dc conversion power supply P1 cannot be worked because of environmental baseline, carry out Temperature and Humidity Control.
By above-mentioned measure, realize when switch board opens machine, first carry out the judgement of humiture, when humiture exceedes setting threshold, first environment in switch board is controlled, when humiture both satisfies condition, open again machine.
The course of work of the present utility model is, by the setting value of the first temperature controller WKQ1, is that 0 ℃, the setting value of the second temperature controller WKQ2 are that 8 ℃, the first humidity controller SKQ1 relative humidity setting value are 90%, the second humidity controller SKQ2 setting value is 80%.When unit opens machine, first can detect three conditions that open machine, that is, and the temperature in relative humidity, condensation sensor state and cabinet in switch board.When relative humidity in cabinet is lower than 90% time, 1,2 terminations of the first humidity controller are logical; Condensation sensor is not at dewfall state, and 5,6 terminations of SKQ1 are logical; When the temperature in switch board is greater than 0 ℃, the normally opened contact of the first temperature controller WKQ1 is connected.Work as Qi Jishi, only have while meeting above three conditions simultaneously, the control end coil of A.C. contactor KM1 obtains electric, and main contacts KM1-1 connects, and ac-dc conversion power supply P1 obtains electric work, and the control system of switch board obtains the electric machine work of normally opening.
As when unit opens machine, in switch board, relative humidity is greater than 90%, 1,2 ends of the first humidity controller disconnect, the control end coil losing electricity of A.C. contactor KM1, main contacts KM1-1 disconnects, ac-dc conversion power supply P1 power failure state, now without 24VDC power supply, the control system of switch board can not open machine work.Now the interior relative humidity of cabinet is greater than the setting value 80% of the second humidity controller, the second humidity controller normally opened contact is connected, and electric heater H1 obtains electrical heating, when after in-cabinet temperature raises, relative humidity is reduced to 80%, the second humidity controller normally opened contact disconnects, and electric heater H1 stops heating.
As element in cabinet when unit opens machine dewfall, 5,6 ends of the first humidity controller SKQ1 disconnect, the control end coil losing electricity of A.C. contactor KM1, and main contacts KM1-1 disconnects, ac-dc conversion power supply P1 is in power failure state, and the control system of switch board can not open machine work.Humidity under dewfall state is necessarily greater than the setting value 80% of the second humidity controller SKQ2, the second humidity controller SKQ2 normally opened contact is connected, electric heater H1 obtains electrical heating, after the temperature in switch board raises, when relative humidity is reduced to 80%, the normally opened contact of the second humidity controller SKQ2 disconnects, electric heater H1 dead electricity and stop heating.
If the in-cabinet temperature when unit opens machine is lower than 0 ℃, the normally opened contact of the first temperature controller WKQ1 disconnects, the control end coil losing electricity of A.C. contactor KM1, the main contacts KM1-1 of A.C. contactor KM1 disconnects, ac-dc conversion power supply P1 is in power failure state, and the control system of switch board can not open machine work.Now, temperature in switch board is lower than 8 ℃ of the setting values of the second temperature controller WKQ2, the normally closed contact of the second temperature controller WKQ2 is connected, electric heater H1 obtains electrical heating, when in-cabinet temperature is increased to more than 8 ℃, the second temperature controller WKQ2 normally closed contact disconnects, and electric heater H1 stops heating.
In unit running process, while being greater than the setting value 80% of the second humidity controller SKQ2 as relative humidity in switch board, or, while controlling in-cabinet temperature lower than 8 ℃ of the setting values of the second temperature controller WKQ2, capital is triggered electric heater H1 and is obtained electrical heating, and detailed process is the same.
The utility model is owing to adopting the technical scheme that opens machine temperature-humidity protecting circuit in the power-supply unit input end increase of ac-dc conversion power supply; can before cannot working because of environmental baseline, power-supply unit carry out Temperature and Humidity Control; realization is opened organizational security and is protected; and; in the operating Temperature and Humidity Control of equipment; make blower fan master control system switch board can adapt to the climatic environment of high humidity type, have suitable environment more extensively, the system protection advantage such as more comprehensively.
It is worthy of note; protection domain of the present utility model is not limited to above-mentioned instantiation mode, and according to basic fundamental design of the present utility model, those of ordinary skills are without process creative work; the embodiment that can associate, all belongs to protection domain of the present utility model.
Claims (3)
1. a high humidity environment wind-powered electricity generation unit master control system switch board temperature and humidity control device, comprise, AC power (10), temperature and humidity controller (20), electric heater (30), ac-dc conversion power supply (40) and control system (50), it is characterized in that, described AC power (10) is electrically connected with ac-dc conversion power supply (40) by temperature and humidity controller (20), and described ac-dc conversion power supply (40) is electrically connected with control system (50); Described temperature and humidity controller (20) is electrically connected with electric heater (30).
2. a kind of high humidity environment wind-powered electricity generation unit master control system switch board temperature and humidity control device according to claim 1, is characterized in that, described AC power (10) is 230VAC, and ac-dc conversion power supply (40) is 24VDC.
3. a kind of high humidity environment wind-powered electricity generation unit master control system switch board temperature and humidity control device according to claim 1 and 2, it is characterized in that, described temperature and humidity controller (20), comprise, the first humidity controller SKQ1 of built-in humidity sensor and condensation sensor, the second humidity controller SKQ2, the first temperature controller WKQ1, the second temperature controller WKQ2 and A.C. contactor KM1, the input end 3 of described the first humidity controller SKQ1, 4 are electrically connected with AC power (10), the normally closed contact 1 of described built-in humidity sensor, 2, the normally closed contact 5 of built-in condensation sensor, 6 and normally opened contact and the A.C. contactor KM1 control end coil of the first temperature controller WKQ1 be connected in series in AC power (10), the main contacts KM1-1 of described A.C. contactor KM1 is electrically connected with the power input of ac-dc conversion power supply (40), after the normally closed contact parallel connection of the normally opened contact of described the second humidity controller SKQ2 and the second temperature controller WKQ2, be connected in series in AC power (10) with electric heater (30), the direct current output of described ac-dc conversion power supply (40) is electrically connected with the control system (50) of switch board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622007.8U CN203588096U (en) | 2013-09-30 | 2013-09-30 | Humiture control device of control cabinet of main control system of wind turbine generator unit in high moist environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622007.8U CN203588096U (en) | 2013-09-30 | 2013-09-30 | Humiture control device of control cabinet of main control system of wind turbine generator unit in high moist environment |
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| Publication Number | Publication Date |
|---|---|
| CN203588096U true CN203588096U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320622007.8U Expired - Fee Related CN203588096U (en) | 2013-09-30 | 2013-09-30 | Humiture control device of control cabinet of main control system of wind turbine generator unit in high moist environment |
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| Country | Link |
|---|---|
| CN (1) | CN203588096U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571232A (en) * | 2015-01-26 | 2015-04-29 | 广东申菱空调设备有限公司 | Wide working condition type electric cabinet and internal temperature and humidity control method thereof |
| CN109390911A (en) * | 2018-12-29 | 2019-02-26 | 重庆科凯前卫风电设备有限责任公司 | Low-temperature protection remote power-off control system and control method for uninterruptible power supply |
-
2013
- 2013-09-30 CN CN201320622007.8U patent/CN203588096U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571232A (en) * | 2015-01-26 | 2015-04-29 | 广东申菱空调设备有限公司 | Wide working condition type electric cabinet and internal temperature and humidity control method thereof |
| CN109390911A (en) * | 2018-12-29 | 2019-02-26 | 重庆科凯前卫风电设备有限责任公司 | Low-temperature protection remote power-off control system and control method for uninterruptible power supply |
| CN109390911B (en) * | 2018-12-29 | 2024-02-20 | 重庆科凯前卫风电设备有限责任公司 | Low-temperature protection remote shutdown control system and control method for uninterruptible power supply |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140507 Termination date: 20180930 |