CN201606968U - Weather compensation frequency conversion control device for heating - Google Patents
Weather compensation frequency conversion control device for heating Download PDFInfo
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- CN201606968U CN201606968U CN2010201163450U CN201020116345U CN201606968U CN 201606968 U CN201606968 U CN 201606968U CN 2010201163450 U CN2010201163450 U CN 2010201163450U CN 201020116345 U CN201020116345 U CN 201020116345U CN 201606968 U CN201606968 U CN 201606968U
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- control device
- heating
- outdoor temperature
- pressure
- frequency
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Abstract
The utility model discloses a weather compensation frequency conversion control device for heating, which comprises a singlechip, an outside temperature sensor, a water supply pressure sensor, a backwater pressure sensor and a frequency converter, wherein the singlechip is connected with the outside temperature sensor, the water supply pressure sensor, the backwater pressure sensor, and the frequency converter. The weather compensation frequency conversion control device for heating further comprises a clock circuit, a keyboard circuit, a memory circuit, and a display circuit which are connected with the singlechip respectively. The control device can automatically regulate controlling parameters of the frequency converter and the flow rate of a circulating pump, when the outdoor temperature falls, the flow rate of the circulating pump is increased to ensure heating effect; and when the outdoor temperature rises, the flow rate of the circulating pump is reduced to decrease the work of a water pump and thermal energy consumption.
Description
Technical field
The utility model relates to the frequency-converting control device of circulating pump in the heating system, particularly a kind of weather compensation frequency-converting control device.
Background technology
Along with improving constantly of heating industry automaticity, heating circulation pump progressively changes into converting operation by traditional power frequency operation, and converting operation adopts the level pressure VFC more.At present, state's internal circulation pump VFC generally adopts dual mode, and a kind of is to utilize the PLC controller to carry out the VFC programming, and another kind is to utilize frequency converter to carry pressure control function to realize.PLC heat supply control system is used in thermoelectric enterprise heating plant mostly, is mainly used in remote centralized control, and its control programming and system debug must be finished by the professional, invest bigger, operation and maintenance cost is higher, in case break down, will influence full station heat supply running.Frequency converter level pressure control is many to be used managing in the heating plant certainly, and this mode does not need bigger investment, controls easyly, easy to maintenance, but can only realize simple level pressure VFC.
In the heating process, climate temperature changes to the heating temperature influence greatly, and under the constant situation of pump flow, outdoor temperature reduces, and supply backwater temperature difference increases, and heating effect descends.Outdoor temperature raises, and supply backwater temperature difference reduces, the heat supply surplus.If can change the timely adjustment pump flow according to climate temperature, keep certain supply backwater temperature difference, will make heating control science more, more energy-conservation.
The utility model content
The purpose of this utility model is to provide a kind of heating weather compensation frequency-converting control device, and that this control device has is simple in structure, maintenance and the cheap advantage of use cost.
The utility model for achieving the above object, the technical solution of employing is:
Heating weather compensation frequency-converting control device, comprise single-chip microcomputer, outdoor temperature sensor, pressure of supply water sensor, pressure of return water sensor, frequency converter, single-chip microcomputer is connected with outdoor temperature sensor, pressure of supply water sensor, pressure of return water sensor, frequency converter respectively.
Above-mentioned heating weather compensation frequency-converting control device also comprises clock circuit, keyboard circuit, memory circuit, the display circuit that is connected respectively with single-chip microcomputer.
Above-mentioned single-chip microcomputer adopts the AT89S52 chip, and outdoor temperature sensor adopts the DS18B20 digital temperature sensor.
The beneficial effects of the utility model: (1) this heating weather compensation frequency-converting control device belongs to the heating circulation pump dedicated control device, does not need user program, can directly carry out the circulating pump VFC.(2) realized weather compensation VFC.(3) parameter is set simply, only needs to revise outdoor temperature---pressure reduction table of comparisons data, just can be according to the circulation of control curve realization circulation pump variable flow.(4) this frequency-converting control device is easy to use, and manufacturing cost and maintenance cost are lower.
Description of drawings
Fig. 1 connects block diagram for the hardware of heating weather compensation frequency-converting control device.
Fig. 2 is the control device control flow chart.
Below in conjunction with accompanying drawing the utility model is elaborated:
The specific embodiment
In conjunction with Fig. 1, Fig. 2, heating weather compensation frequency-converting control device, comprise single-chip microcomputer, outdoor temperature sensor, pressure of supply water sensor, pressure of return water sensor, frequency converter, single-chip microcomputer is connected with outdoor temperature sensor, pressure of supply water sensor, pressure of return water sensor, frequency converter respectively.This heating weather compensation frequency-converting control device also comprises clock circuit, keyboard circuit, memory circuit, the display circuit that is connected respectively with single-chip microcomputer.
Above-mentioned single-chip microcomputer adopts the AT89S52 chip, and outdoor temperature sensor adopts the DS18B20 digital temperature sensor.
This control device can change according to outdoor temperature, adjusts the Frequency Converter Control parameter automatically, regulates pump flow.When outdoor temperature reduces, increase pump flow, guarantee heating effect; When outdoor temperature raises, reduce pump flow, reduce water pump acting and thermal energy consumption.
Single-chip microcomputer reads the outdoor temperature value by outdoor temperature sensor, and the mode of reading adopts batch (-type), and the cycle was advisable with 0.5 hour～1 hour, makes the control operation more stable.Set pressure reduction and take lookup table mode, corresponding one of each temperature range is set pressure reduction, makes control flow easier.
There are 3 programmable timers (T0, T1 and T2) single-chip microcomputer inside, utilizes timer T0 to form the pwm pulse cycle, utilizes timer T1 to form the PWM positive pulse width, adopts the PI algorithm to calculate PWM pulsewidth increment and PWM pulsewidth.Adjust the analog voltage that is sent to frequency converter by adjusting the PWM positive pulse width, thereby control frequency converter output frequency reaches the control motor speed, controls the purpose for backwater pressure reduction.Utilize timer T2 to realize the time accumulating function, to determine to read outdoor temperature blanking time.
Keyboard circuit has three buttons that system operational parameters (as the outdoor temperature and the setting pressure reduction table of comparisons) can be set.
Display circuit demonstration outdoor temperature capable of circulation, setting pressure reduction, actual pressure differential, its left side play first and are state value, and first is 1 o'clock, back three bit representation environment temperatures; First is 2 o'clock, and back three bit representations are set pressure reduction; First is 3 o'clock, back three bit representation actual pressure differential.
During use, single-chip microcomputer reads outdoor temperature, tables look-up to such an extent that correspondingly determine the frequency converter analog input voltage for backwater given pressure reduction according to given pressure reduction, determines PWM pulsewidth and output.Read pressure of supply water and pressure of return water, calculate pressure reduction.When actual pressure differential equals to set pressure reduction, export former pwm pulse; When actual pressure differential departs from setting pressure reduction, draw PWM pulsewidth increment and PWM pulsewidth and output according to deviation PI algorithm, and read outdoor temperature aggregate-value blanking time, judge whether the accumulation interval time arrives setting cycle, time less than, just turn back to the upper end flow process read pressure of supply water and pressure of return water.When arrival interval cycle time, to the cumulative time zero clearing, read outdoor temperature once more, table look-up correspondingly for the given pressure reduction of backwater, repeat to read pressure of supply water and pressure of return water, calculating pressure reduction again, compare to determine, adjust output pwm pulse etc., through reciprocation cycle, thereby realize weather compensation VFC.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection domain of the present utility model.
Claims (3)
1. the heating weather compensates frequency-converting control device, it is characterized in that: described frequency-converting control device comprises single-chip microcomputer, outdoor temperature sensor, pressure of supply water sensor, pressure of return water sensor, frequency converter, and single-chip microcomputer is connected with outdoor temperature sensor, pressure of supply water sensor, pressure of return water sensor, frequency converter respectively.
2. heating weather compensation frequency-converting control device according to claim 1, it is characterized in that: described frequency-converting control device also comprises clock circuit, keyboard circuit, memory circuit, the display circuit that is connected respectively with single-chip microcomputer.
3. heating weather compensation frequency-converting control device according to claim 1 and 2, it is characterized in that: described single-chip microcomputer adopts the AT89S52 chip, and outdoor temperature sensor adopts the DS18B20 digital temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201163450U CN201606968U (en) | 2010-02-10 | 2010-02-10 | Weather compensation frequency conversion control device for heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201163450U CN201606968U (en) | 2010-02-10 | 2010-02-10 | Weather compensation frequency conversion control device for heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606968U true CN201606968U (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201163450U Expired - Fee Related CN201606968U (en) | 2010-02-10 | 2010-02-10 | Weather compensation frequency conversion control device for heating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975418A (en) * | 2010-11-25 | 2011-02-16 | 北京华通兴远供热节能技术有限公司 | Temperature difference type flow control system of secondary heating pipe network and control method thereof |
| CN101975417A (en) * | 2010-11-22 | 2011-02-16 | 哈尔滨工业大学 | Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system |
| CN102748802A (en) * | 2012-04-27 | 2012-10-24 | 太原大四方节能环保有限公司 | Variable-differential-pressure energy-saving device of circulating pump |
| CN104076797A (en) * | 2014-07-04 | 2014-10-01 | 无锡锐泰节能系统科学有限公司 | Climate compensator |
| CN104090602A (en) * | 2014-07-04 | 2014-10-08 | 无锡锐泰节能系统科学有限公司 | Time division and temperature division controller |
| CN104218527A (en) * | 2013-09-11 | 2014-12-17 | 张朝坤 | Method for prolonging life of intelligent control sensor of motor |
-
2010
- 2010-02-10 CN CN2010201163450U patent/CN201606968U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975417A (en) * | 2010-11-22 | 2011-02-16 | 哈尔滨工业大学 | Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system |
| CN101975417B (en) * | 2010-11-22 | 2012-11-07 | 哈尔滨工业大学 | Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system |
| CN101975418A (en) * | 2010-11-25 | 2011-02-16 | 北京华通兴远供热节能技术有限公司 | Temperature difference type flow control system of secondary heating pipe network and control method thereof |
| CN101975418B (en) * | 2010-11-25 | 2012-11-28 | 北京华通兴远供热节能技术有限公司 | Temperature difference type flow control system of secondary heating pipe network and control method thereof |
| CN102748802A (en) * | 2012-04-27 | 2012-10-24 | 太原大四方节能环保有限公司 | Variable-differential-pressure energy-saving device of circulating pump |
| CN102748802B (en) * | 2012-04-27 | 2015-06-24 | 太原大四方节能环保有限公司 | Variable-differential-pressure energy-saving device of circulating pump |
| CN104218527A (en) * | 2013-09-11 | 2014-12-17 | 张朝坤 | Method for prolonging life of intelligent control sensor of motor |
| CN104076797A (en) * | 2014-07-04 | 2014-10-01 | 无锡锐泰节能系统科学有限公司 | Climate compensator |
| CN104090602A (en) * | 2014-07-04 | 2014-10-08 | 无锡锐泰节能系统科学有限公司 | Time division and temperature division controller |
| CN104076797B (en) * | 2014-07-04 | 2017-01-11 | 无锡锐泰节能系统科学有限公司 | Climate compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20110210 |