CN2899034Y - Automatic frequency-variable controller with energy-saving and heat-supplying functions for microcomputer - Google Patents
Automatic frequency-variable controller with energy-saving and heat-supplying functions for microcomputer Download PDFInfo
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- CN2899034Y CN2899034Y CN 200620020394 CN200620020394U CN2899034Y CN 2899034 Y CN2899034 Y CN 2899034Y CN 200620020394 CN200620020394 CN 200620020394 CN 200620020394 U CN200620020394 U CN 200620020394U CN 2899034 Y CN2899034 Y CN 2899034Y
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Abstract
The utility model discloses an automatic frequency-variable controller with energy-saving and heat-supplying functions for microcomputer. A main control system comprises an automatic frequency-variable speedometer, a temperature controller and an air switch, a breaker, a heat relay protector low voltage components and parts and an assistant control system comprises an external signal collecting components and parts; the utility model through closed looping, when the two heat support system reaches the arranged temperature, the pump starts low speed running. When the heat net is lower than the arranged temperature, the pump runs from low speed to high speed, gradually the temperature in the net can be raised to the arranged temperature, and then convert to low speed running, the high or low speed can be converted and adjusted according to the arranged temperature; accordingly the purpose of conserving electric energy can be achieved.
Description
Technical field:
The utility model is a kind of control device of heating network, relates to Computer Control Technology.
Technical background:
The power consumption emphasis equipment of heat supply network heat supply is circulation pump of heat-supply network, the rate of circulation of heat supply network heat supply, be to carry out according to the conversion of the outdoor climate and the indoor environment temperature difference, traditional method is the flow that the open degree of control valve is regulated hot water, but water circulating pump is still constant-speed operation, has wasted a lot of energy to a certain extent.
Summary of the invention:
The utility model purpose is to disclose a kind of computer transduce heating energy-saving automaton.
The utility model is a kind of closed-loop control, forms main body control system and peripheral signal by computer transduce speed regulator, temperature controller and air switch, isolating switch, hot relay protector low pressure unit, device and gathers the supplementary controlled system that unit, device form and form; Comprise and be installed in chamber, inside and outside Temperature sampler 1, detect temperature signal in real time, sending temperature comparison regulator 2 to compares with setting value, the temperature after relatively, voltage (or electric current) signal that force value changes into standard, send interchanger to, collect comparison operation, change the output frequency and the voltage of frequency converter by the fortune of computer transduce speed regulator 3 inside, regulate pressurized heat water pump 4 rotating speed of motor, the maximum delivery rate of water circulating pump is reduced to the amount of the temperature correspondence of controlling; It is characterized in that: external connection comprises
One, major loop
Three-phase four-wire system (AC380V) power lead of introducing from the power switch cabinet meets the main switch QF1 of switch board, draws three-phase supply from main switch QF1 lower end and receives respectively and become quite the gauge tap QF2 of electric power loop and the gauge tap QF3 in power frequency supply loop.Power input R, S, the T of termination frequency converter under the QF2, the major loop terminal of output terminal U, the V of frequency converter, W contactor KM1, KM3, outgoing side receive respectively protecting component FH1, FH2 the major loop terminal, again with control motor link to each other.
The major loop terminal of QF3 lower end contactor KM2, KM4, outgoing side are received the major loop terminal of protecting component FH1, FH2 respectively, link to each other with control motor M 1, M2 again.
Two, control loop
The power switch QFO of control loop connects three-phase supply A phase, and the output terminal label is 01, and the N line is directly introduced, and label is 02, constitutes the control loop power supply of AC220V.Power light connects 01 and 02.Trouble light takes over 1 and 03, receives 02 by the normally closed terminal of the control of protecting component FH1, FH2.Power frequency, frequency conversion switch connect 01 and 05,15.Frequency conversion connects 15, power frequency connects 05.
1, power frequency control loop
Manually run indicator connects 05,02; No. 1 pump power frequency stop button connects 05,07; start button connects 07,09; the auxiliary point of contactor KM2 connects 07,09 and has constituted self-locking circuit; the normally closed contact of contactor KM1 connects 09,37; the working coil of contactor KM2 receives 37,10, and control Chang Kaiduan of protecting component FH1 receives 10,02.
No. 2 pump power frequency stop button connects 05,011; start button connects 11,13; the auxiliary contact of contactor KM2 connect 11,13 and have constituted self-locking circuit; the normally closed contact of contactor KM1 connects 13,39; the working coil of contactor KM2 receives 39,14, and control Chang Kaiduan of protecting component FH1 receives 14,02.
2, variable frequency control is returned arm
The converting operation pilot lamp connects 15,12; The switch TA TC and the KA of control work at present pump connect 15,17 and 15,25 respectively.
System design be No. 1 for the work at present pump.Control pump switches, the coil of the time relay ST1 of start and stop connects 17,10, and the time closing moving together contact of ST2 connects 17,09.The contact of the control loop of No. 1 converting operation of control.
The utility model is by the mode of closed-loop control, and when heat supply two systems of institute reached design temperature, water pump began low-speed running.When heat supply network was lower than design temperature, water pump ran up by converting at a slow speed, made the interior temperature recovery of net to design temperature gradually, converted low-speed running then again to, and high low-speed running can be changed adjustment automatically according to design temperature; Thereby realize saving the purpose of electric energy.
Description of drawings
Fig. 1 is the utility model theory diagram;
Fig. 1 is the utility model circuit diagram;
Embodiment:
As shown in Figure 1, a whole set of control device is formed main body control system and peripheral signal by low pressure unit, devices such as computer transduce speed regulator, temperature controller and air switch, isolating switch, hot relay protectors and is gathered the supplementary controlled system that unit, device form; The main body control system controls realization by the computer transduce speed regulator, the peripherals normal working frequency is 50Hz, through technician's establishment, input converter working procedure, make frequency converter maximum frequency of operation (water lift) be set at 46Hz (supposition), minimum running frequency (constant voltage) is set at 32Hz (supposition), and temperature controller boundary line temperature is set at 23 degrees centigrade (corresponding current output is 15mA); The peripheral signal acquisition system sends the temperature signal of being gathered to temperature controller, temperature controller passes the feeding frequency converter after converting temperature signal to corresponding current signal, frequency converter calculates the current signal of receiving, compare with the running frequency that pre-sets, when the current value that receives during greater than 15mA (being that temperature is higher than 23 degree), frequency converter is just with 32Hz output signal water supply pump motor, and water pump begins uncle's low-speed running, and hot water pressurize in pipe network is not flowed; When the current value that receives during less than 15mA (being that temperature is lower than 23 degree), just with 46Hz output signal water supply pump motor, water pump begins to run up frequency converter, and hot water begins to flow in pipe network; By the high low speed rotation of heat supply lift pump, promptly guaranteed the constant temperature of whole heating network, prolonged the serviceable life of equipment again, reduced equipment operation and maintenance cost, and the slow running process of pump promptly is the process of saving a large amount of electric energy.
Schematic block diagram illustration:
Temperature sampler is gathered the return water temperature t2 of central heating pipe network, t2 is transferred to PI temperature difference comparison regulator compares with setting control temperature t 1, both temperature signals relatively is transferred to frequency converter, with the rotating speed of control pressurized heat water pump.
When t1-t2 greater than 0 the time, the PI temperature difference is regulator output 0-10V relatively, the control of conversion device quickens operation between the minimum of minimum operation frequency (guaranteeing that pressure of supply water reaches the minimum frequency values of heat supply object highest point) and maximum frequency;
When t1-t2 is less than or equal to 0, the PI temperature difference is regulator output 0-3V relatively, the control of conversion device runs slowly between minimum operation frequency (guaranteeing that pressure of supply water reaches the minimum frequency values of heat supply object highest point) and maximum frequency, until reaching the minimum operation frequency; Frequency converter compares under the effect of regulator output control signal in the PI temperature difference, works circularly, keeps constant temperature thereby reach heat supply, rationally adjusts the rotating speed of pressurized heat water pump, thereby reaches the purpose of saves energy.
Fig. 2 be system design be No. 1 for the work at present pump.Control pump switches, the coil of the time relay ST1 of start and stop connects 17,10, and the time closing moving together contact of ST2 connects 17,09.The contact of the control loop of No. 1 converting operation of control.
Performance and characteristics
1, energy-efficient, 20%-50% generally economizes on electricity;
2, intelligent control system can be revised arbitrarily parameter instruction and (add temperature setting value, pressure set points control System order, control number of motors, pid value, Acceleration and deceleration time etc.);
3, realize softly opening, soft stop control, eliminated direct startup to impact and the interference of electrical network, reduce The fault rate of motor and electric elements reduces the noise that motor moves.
4, defencive function is perfect, has the defencive functions such as overcurrent, overvoltage, under-voltage, overload.
5, speed governing is convenient, and device has manually, automatically reaches the strange land operating function, and is reliable, safeguards Convenient.
Claims (2)
1. computer transduce heating energy-saving automaton, be a kind of closed-loop control, form main body control system and peripheral signal by computer transduce speed regulator, temperature controller and air switch, isolating switch, hot relay protector low pressure unit, device and gather the supplementary controlled system that unit, device form and form; Comprise and be installed in chamber, inside and outside Temperature sampler (1), detect temperature signal in real time, sending temperature comparison regulator (2) to compares with setting value, the temperature after relatively, voltage or the current signal that force value changes into standard, send interchanger to, collect comparison operation by the fortune that computer transduce speed regulator (3) is inner, change the output frequency and the voltage of frequency converter, regulate pressurized heat water pump (4) rotating speed of motor, the maximum delivery rate of water circulating pump is reduced to the amount of the temperature correspondence of controlling; It is characterized in that: external connection comprises:
One, major loop
The three-phase four-wire system power lead of introducing from the power switch cabinet meets the main switch QF1 of switch board, draws three-phase supply from main switch QF1 lower end and receives respectively and become quite the gauge tap QF2 of electric power loop and the gauge tap QF3 in power frequency supply loop.Power input R, S, the T of termination frequency converter under the QF2, the major loop terminal of output terminal U, the V of frequency converter, W contactor KM1, KM3, outgoing side receive respectively protecting component FH1, FH2 the major loop terminal, again with control motor link to each other.
The major loop terminal of QF3 lower end contactor KM2, KM4, outgoing side are received the major loop terminal of protecting component FH1, FH2 respectively, link to each other with control motor M 1, M2 again.
Two, control loop
The power switch QFO of control loop connects three-phase supply A phase, and the output terminal label is 01, and the N line is directly introduced, and label is 02, constitutes the control loop power supply of AC220V.Power light connects 01 and 02.Trouble light takes over 1 and 03, receives 02 by the normally closed terminal of the control of protecting component FH1, FH2.Power frequency, frequency conversion switch connect 01 and 05,15.Frequency conversion connects 15, power frequency connects 05.
1, power frequency control loop
Manually run indicator connects 05,02; No. 1 pump power frequency stop button connects 05,07; start button connects 07,09; the auxiliary point of contactor KM2 connects 07,09 and has constituted self-locking circuit; the normally closed contact of contactor KM1 connects 09,37; the working coil of contactor KM2 receives 37,10, and control Chang Kaiduan of protecting component FH1 receives 10,02.
No. 2 pump power frequency stop button connects 05,011; start button connects 11,13; the auxiliary contact of contactor KM2 connect 11,13 and have constituted self-locking circuit; the normally closed contact of contactor KM1 connects 13,39; the working coil of contactor KM2 receives 39,14, and control Chang Kaiduan of protecting component FH1 receives 14,02.
2, variable frequency control is returned arm
The converting operation pilot lamp connects 15,12; The switch TA TC and the KA of control work at present pump connect 15,17 and 15,25 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620020394 CN2899034Y (en) | 2006-03-17 | 2006-03-17 | Automatic frequency-variable controller with energy-saving and heat-supplying functions for microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620020394 CN2899034Y (en) | 2006-03-17 | 2006-03-17 | Automatic frequency-variable controller with energy-saving and heat-supplying functions for microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2899034Y true CN2899034Y (en) | 2007-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620020394 Expired - Fee Related CN2899034Y (en) | 2006-03-17 | 2006-03-17 | Automatic frequency-variable controller with energy-saving and heat-supplying functions for microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2899034Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145460A (en) * | 2019-06-03 | 2019-08-20 | 国家电网有限公司 | A kind of double water pump rotation start-up and shut-down control circuit |
-
2006
- 2006-03-17 CN CN 200620020394 patent/CN2899034Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145460A (en) * | 2019-06-03 | 2019-08-20 | 国家电网有限公司 | A kind of double water pump rotation start-up and shut-down control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |