CN101726038A - Centralized heat supply control system - Google Patents
Centralized heat supply control system Download PDFInfo
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- CN101726038A CN101726038A CN200910156806A CN200910156806A CN101726038A CN 101726038 A CN101726038 A CN 101726038A CN 200910156806 A CN200910156806 A CN 200910156806A CN 200910156806 A CN200910156806 A CN 200910156806A CN 101726038 A CN101726038 A CN 101726038A
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Abstract
The invention relates to a centralized heating control system, in particular to a centralized heat supply transportation-distribution energy saving system suitable for a secondary network. The invention aims at overcoming the defects of the background art and providing a centralized heat supply transportation-distribution energy saving system suitable for a secondary network. The energy saving system has the characteristics of high efficiency, large frequency conversion amplitude, energy saving, has simple and reasonable structure as well as accurate and reliable use. The heat supply energy saving control system comprises a circulation pipeline communicated with a heat exchanger, and the circulation pipeline is provided with a plurality of branch pipelines connected with heat users. The heat supply energy saving control system is characterized in that the circulation pipeline is provided with a circulation water pump on which a frequency conversion controller for controlling the frequency conversion of the circulation water pump is arranged; and the branch pipelines are provided with temperature control regulating valves connected with the heat users.
Description
Technical field
The present invention relates to a kind of central heating system, specifically be meant a kind of central heating transmission ﹠ distribution energy conserving system that is applicable to the secondary net.
Background technology
Along with measuring technique, monitoring technique, automatic technology and development of computer, the heat supply undertaking of China is entering the Rapid development stage of intensive management, intelligent automation control at present.
At present, heating is all carried out in the mode of central heating basically in the city to the north of the Huaihe River; In the distributing system of central heating secondary pipe network, the consumption of energy is mainly user's thermic load and water circulating pump.For the thermic load that guarantees the user is in (too not high or too low) within the reasonable range, static balancing valve generally all is installed before unit building, give the flow of this unit in order to the control transmission ﹠ distribution.Because static balancing valve can only play the effect of pro-rata flow, when the thermic load of valve end changed, static balancing valve just can not guarantee the reasonable distribution of energy, caused " thermal misadjustment " of secondary net, produce serious energy dissipation phenomenon, i.e. not frequency conversion, not energy-conservation; In addition, secondary net water circulating pump generally adopts constant pressure water supply, this method control thinking is simple, be convenient to realize, and can carry out frequency conversion within the specific limits, but because employing is that constant pressure supplies water, the amplitude of frequency conversion is very limited, the frequency conversion surplus can not be brought into play, cause the degree of energy-saving and frequency-variable lower, thereby caused the potential waste of water pump electric energy.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned background technology, a kind of central heating transmission ﹠ distribution energy conserving system that is applicable to the secondary net is provided, this energy conserving system should have efficiently, big, the energy-conservation characteristics of frequency conversion amplitude, and simple and reasonable, and it is accurate, reliable to use.
The technical solution used in the present invention is: a kind of heat supply energy-saving control system, comprise the circulating line that is communicated with heat exchanger, this circulating line is provided with some the branch line that links to each other with hot user, it is characterized in that: described circulation line is provided with a water circulating pump, and water circulating pump is provided with the frequency-variable controller of its frequency conversion of control; Described lateral is provided with the temperature control adjusting valve that links to each other with hot user.
Described temperature control adjusting valve comprises valve body, is installed in YE and temperature sensor on the valve body, and described YE links to each other with valve positioner by electric wire with temperature sensor, also is provided with wireless transmitter module on the described valve positioner.
Described temperature sensor comprises supply water temperature sensor and return water temperature sensor.
Described valve positioner has wireless receiving module, and this wireless receiving module receives the wireless signal that is spread out of by the wireless transmitter module on the valve positioner.
Described valve positioner is embedded with the temperature inductor of measuring purpose return water temperature and actual temperature of return water.
Described frequency-variable controller comprises casing, and the outer surface of casing is provided with display screen and numeric keypad, is provided with the control module of control figure keyboard and display screen operation in the casing.
Also be provided with wireless receiving module in the described frequency-variable controller, this wireless receiving module receives the valve opening signal that wireless transmitter module sends in the temperature control valve (TCV).
Operation principle of the present invention is: by a kind of algorithm of VFC is set in frequency-variable controller, make it on the basis that guarantees the terminal temperature difference reasonable energy, significantly reduce the resistance of pipe-line system, make pump working on lower pressure spot, thereby reach purpose of energy saving.This algorithm mainly divides following three steps to carry out:
1: when in all branches end temperature control adjusting valve, the aperture of all valves is then carried out the frequency reducing operation all less than certain given minimum of a value (for example 0.7).
2: in all branches end temperature control adjusting valve,, then carry out the raising frequency operation as long as there is the aperture of a valve to reach certain given maximum (for example 0.95).
3: in all branches end temperature control adjusting valve, all valve openings all between given maximum and minimum of a value, are not then carried out the frequency conversion operation.
The maximum opening value of above-mentioned valve and minimum opening value be by: the wireless receiving module in frequency-variable controller receives the valve opening information that the valve end wireless transmitter module is sent out in real time, and the aperture of all valves is compared computing draws.
During use, after the frequency-variable controller wireless receiving module receives the valve opening signal that wireless transmitter module sends in the temperature control valve (TCV), the frequency converter that draws carries out the maximum and the minimum of frequency conversion, can be according to the actual conditions adjustment, and the numeral input that will draw by hand by the numeric keypad on the frequency-variable controller casing.
After above-mentioned frequency converter was received valve signal aperture, it was as follows to calculate the maximum and the minimizing algorithm that carry out frequency conversion:
1, in all terminal temperature control adjusting valve (2), the aperture of all valves is then carried out the frequency reducing operation all less than certain given minimum of a value (for example 0.7).
2, in all terminal temperature control adjusting valve (2),, then carry out the raising frequency operation as long as there is the aperture of a valve to reach certain given maximum (for example 0.95).
3, in all terminal temperature control adjusting valve (2), all valve openings all between given maximum and minimum of a value, are not then carried out the frequency conversion operation.
Frequency converter significantly reduces the resistance of pipe-line system on the basis that guarantees the terminal temperature difference reasonable energy, make pump working on lower pressure spot, thereby reach purpose of energy saving.
The invention has the beneficial effects as follows: the resistance in the pipe-line system that declined to a great extent, make it under the constant situation of flow, water pump is moved on lower pressure spot, thereby significantly reduced the energy consumption of water pump.Simultaneously, set up the temperature control adjusting valve of return water temperature automatic regulating valve door aperture, make its aperture carry out corresponding frequency conversion, supply with to guarantee the energy on the least favorable loop according to valve.In addition, this temperature control adjusting valve can be according to the variation of terminal temperature difference thermic load, the aperture of automatic regulating valve door, guaranteed the distribution according to need of energy, make the high pipeline of thermic load obtain more energy, thoroughly broken away from static balancing valve by prior given pro rate flow bring unfavorable, reached the purpose of balanced energy conservation.Valve of the present invention Shanghai has been equipped with wireless transmitter module, and this wireless transmitter module can carry out data communication with miscellaneous equipment, has reduced the trouble of wiring, brings great convenience to construction.
Description of drawings
Fig. 1 is the structural representation of this heat supply energy-saving control system.
Fig. 2 is the structural representation of temperature control adjusting valve among Fig. 1.
Fig. 3 is the structural representation of frequency-variable controller among Fig. 1.
The specific embodiment
Below in conjunction with Figure of description technical scheme of the present invention is described further.
As shown in Figure 1, a kind of heat supply energy-saving control system, comprise the circulating line 6 that is communicated with heat exchanger 1, this circulating line is provided with some the branch line that links to each other with hot user 2, it is characterized in that: described circulation line is provided with a water circulating pump 5, and water circulating pump is provided with the frequency-variable controller 4 of its frequency conversion of control; Described lateral is provided with the temperature control adjusting valve 3 that links to each other with hot user.
Described temperature control adjusting valve 3 comprises valve body 20, is installed in YE 23 and temperature sensor 24 (described temperature sensor comprises supply water temperature sensor and return water temperature sensor) on the valve body 20, described YE links to each other with valve positioner 21 by electric wire with temperature sensor, also is provided with wireless transmitter module 22 on the described valve positioner.This valve positioner is embedded with the temperature inductor of measuring purpose return water temperature and actual temperature of return water; This temperature inductor can detect supply water temperature in real time, and calculate the target return water temperature according to the temperature control curve that is provided with in it, valve positioner is according to the difference of target return water temperature and actual temperature of return water, according to embedded adjusting program, instruct YE to regulate, make target return water temperature and actual temperature of return water reach equal.
Described valve positioner 21 has wireless receiving module 22, this wireless receiving module receive by temperature control adjusting valve with the wireless signal that sends of wireless transmitter module, the wireless transmitter module of temperature control adjusting valve can receive the wireless receiving signal on the frequency-variable controller, and the information of valve is sent to frequency-variable controller; This wireless receiving module receives the wireless signal that is spread out of by the wireless transmitter module on the valve positioner.
Described frequency-variable controller 4 comprises casing, and the outer surface of casing is provided with display screen 43 and numeric keypad 42, is provided with the control module 44 of control figure keyboard and display screen operation in the casing.The maximum and the minimum that instruct frequency converter to carry out frequency conversion in the controller can be carried out manual input by numeric keypad according to the actual conditions adjustment.
Also be provided with wireless receiving module 41 in the described frequency-variable controller, this wireless receiving module receives the valve opening information that the valve end wireless transmitter module is sent out in real time, and the aperture of all valves compared computing, draw the maximum opening value and the minimum opening value of valve.
Shown in 2, the course of work of temperature control adjusting valve is as follows as figure:
1) two temperature sensors detect the supply water temperature and the return water temperature of this valve of flowing through in real time, and temperature value are sent to the I/O end of controller by communication cable.
2) valve positioner is the input parameter of the supply water temperature that receives as embedded algorithm, calculate suitable return water temperature, and a return water temperature that calculates compares with actual temperature, controller calculates the aperture of valve automatically according to both differences, and controls actuator and carry out corresponding action.
3) actuator sends to wireless sending module to the feedback signal of valve opening when carrying out valve event, is outwards launched by wireless module.
As shown in Figure 3: the course of work of frequency-variable controller is as follows:
1) on control module, sets the time interval of wireless module image data, maximum valve opening value and the minimum opening value that frequency converter is carried out frequency conversion.
2) wireless module receives the valve opening value that the valve wireless sending module sends over according to the time interval of setting, and the embedded program of control module is carried out comparison procedure, determines the maximum opening value and the minimum opening value of valve in the pipeline.
3) control module determines whether frequency conversion according to embedded aforementioned frequency conversion algorithm, and frequency variation signal is sent to the frequency converter of water circulating pump, instructs water pump to carry out energy-conservation frequency conversion.
Claims (7)
1. heat supply energy-saving control system, comprise the circulating line (6) that is communicated with heat exchanger (1), this circulating line is provided with some the branch line that links to each other with hot user (2), it is characterized in that: described circulation line (6) is provided with a water circulating pump (5), and water circulating pump is provided with the frequency-variable controller (4) of its frequency conversion of control; Respectively be provided with a temperature control adjusting valve (3) that links to each other with hot user on the described lateral.
2. heat supply energy-saving control system according to claim 1, it is characterized in that: described temperature control adjusting valve (3) comprises valve body (20), is installed in YE (23) and temperature sensor (24) on the valve body, described YE (23) links to each other with valve positioner (21) by electric wire with temperature sensor, also is provided with wireless transmitter module (22) on the described valve positioner.
3. heat supply energy-saving control system according to claim 1 and 2 is characterized in that: described temperature sensor (24) is made up of supply water temperature sensor and return water temperature sensor two parts.
4. heat supply energy-saving control system according to claim 3 is characterized in that: described valve positioner (21) is provided with the RS485 interface with YE and temperature sensor wired connection.
5. heat supply energy-saving control system according to claim 4 is characterized in that: the temperature difference engine of difference between the setting value of the embedded real-time calculating return water temperature of described valve positioner (21) and the measured value.
6. heat supply energy-saving control system according to claim 5, it is characterized in that: described frequency-variable controller (4) comprises casing (40), the outer surface of casing is provided with display screen (43) and numeric keypad (42), is provided with the control module (44) of control figure keyboard and display screen operation in the casing.
7. heat supply energy-saving control system according to claim 6 is characterized in that: also be provided with wireless receiving module (41) in the described frequency-variable controller (4), this wireless receiving module receives the valve opening signal that wireless transmitter module sends in the temperature control valve (TCV).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910156806A CN101726038A (en) | 2009-12-31 | 2009-12-31 | Centralized heat supply control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910156806A CN101726038A (en) | 2009-12-31 | 2009-12-31 | Centralized heat supply control system |
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| CN101726038A true CN101726038A (en) | 2010-06-09 |
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| CN200910156806A Pending CN101726038A (en) | 2009-12-31 | 2009-12-31 | Centralized heat supply control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886831A (en) * | 2010-07-02 | 2010-11-17 | 西安特瑞斯热能技术有限公司 | Integrated heat-supply and energy-saving system |
| CN101949559A (en) * | 2010-09-21 | 2011-01-19 | 杭州哲达科技股份有限公司 | Intelligent energy-saving mixed water heat supply method |
| CN102062445A (en) * | 2010-12-20 | 2011-05-18 | 天津市南开区人民政府供热办公室 | Heat-supply energy saving device for public buildings |
| CN102537589A (en) * | 2012-01-16 | 2012-07-04 | 北京市旭广厦暖通节能设备有限责任公司 | Maintaining and efficiency improving system for centralized heating |
| CN110375370A (en) * | 2019-08-16 | 2019-10-25 | 烟台华蓝新瑞节能科技有限公司 | A kind of wisdom heat supply samming managing and control system |
| CN111306612A (en) * | 2020-03-16 | 2020-06-19 | 廊坊洁兰特智能科技有限公司 | Secondary network regulation and control method and system for heat exchange station |
| CN111765506A (en) * | 2020-07-14 | 2020-10-13 | 戢森 | Intelligent pipe network control method and system |
-
2009
- 2009-12-31 CN CN200910156806A patent/CN101726038A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886831A (en) * | 2010-07-02 | 2010-11-17 | 西安特瑞斯热能技术有限公司 | Integrated heat-supply and energy-saving system |
| CN101949559A (en) * | 2010-09-21 | 2011-01-19 | 杭州哲达科技股份有限公司 | Intelligent energy-saving mixed water heat supply method |
| CN102062445A (en) * | 2010-12-20 | 2011-05-18 | 天津市南开区人民政府供热办公室 | Heat-supply energy saving device for public buildings |
| CN102062445B (en) * | 2010-12-20 | 2012-09-26 | 天津市南开区人民政府供热办公室 | Heat-supply energy saving device for public buildings |
| CN102537589A (en) * | 2012-01-16 | 2012-07-04 | 北京市旭广厦暖通节能设备有限责任公司 | Maintaining and efficiency improving system for centralized heating |
| CN110375370A (en) * | 2019-08-16 | 2019-10-25 | 烟台华蓝新瑞节能科技有限公司 | A kind of wisdom heat supply samming managing and control system |
| CN110375370B (en) * | 2019-08-16 | 2024-03-08 | 烟台华蓝新瑞节能科技有限公司 | Wisdom heat supply samming management and control system |
| CN111306612A (en) * | 2020-03-16 | 2020-06-19 | 廊坊洁兰特智能科技有限公司 | Secondary network regulation and control method and system for heat exchange station |
| CN111306612B (en) * | 2020-03-16 | 2021-06-01 | 廊坊洁兰特智能科技有限公司 | Secondary network regulation and control method and system for heat exchange station |
| CN111765506A (en) * | 2020-07-14 | 2020-10-13 | 戢森 | Intelligent pipe network control method and system |
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Open date: 20100609 |