CN201858698U - Programmed frequency conversion energy-saving heat exchange station - Google Patents
Programmed frequency conversion energy-saving heat exchange station Download PDFInfo
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- CN201858698U CN201858698U CN2010205771506U CN201020577150U CN201858698U CN 201858698 U CN201858698 U CN 201858698U CN 2010205771506 U CN2010205771506 U CN 2010205771506U CN 201020577150 U CN201020577150 U CN 201020577150U CN 201858698 U CN201858698 U CN 201858698U
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- frequency conversion
- pump
- frequency
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- heat exchange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model relates to a programmed frequency conversion energy-saving heat exchange station, which comprises a heat exchange pipeline system and a frequency conversion energy-saving control system. The pipeline system comprises a heat exchanger, a circulatory water pump, a water replenishing pump, a water replenishing tank and an electric valve, the frequency conversion energy-saving control system comprises a PLC (programmable logic controller) automatic control cabinet, a circulatory pump frequency conversion cabinet and a water replenishing pump frequency conversion cabinet, the circulatory pump frequency conversion cabinet and the water replenishing pump frequency conversion cabinet respectively control corresponding pumps and standby pumps and are controlled by the PLC automatic control cabinet, and the PLC automatic control cabinet receives information acquired by temperature and pressure sensors and controls the electric valve. The programmed frequency conversion energy-saving heat exchange station is provided with an intelligent and energy-saving control system, leads PLC frequency conversion control to match with circulatory frequency conversion control and water replenishing frequency conversion control, realizes control systematization, can realize intelligent and energy-saving operation, is unattended, and is high in automation degree.
Description
Technical field
The utility model relates to a kind of programme controlled energy-saving and frequency-variable heat exchange station, particularly its control system.
Background technology
In the cities and towns of China middle part, northern territory, housing estate development, heating is absolutely necessary, central heating is as a kind of saving, heating scheme easily, become the main force of heat supply, but equipment such as the concentrated heat exchange station heat exchanging device of prior art, water circulating pump, small pump, water supply tank lack automatic control system, can not reach heat exchange station intelligence, energy-conservation operational effect.
The utility model content
The purpose of this utility model provides a kind of programme controlled energy-saving and frequency-variable heat exchange station, lacks automatic control system in order to the programme controlled energy-saving and frequency-variable heat exchange station that solves prior art, can not make the problem of heat exchange station intelligence, energy-saving run.
For achieving the above object, scheme of the present utility model is: a kind of programme controlled energy-saving and frequency-variable heat exchange station, comprise heat exchange pipeline system and energy saving control system of frequency conversion in use, described pipe-line system comprises the primary side circulating water secondary side circulation of unifying, the primary side circulating water secondary side circulation of unifying is carried out heat exchange by heat exchanger, secondary side returns to go here and there on the waterway tube and is provided with main circulation pump, the continuous main small pump of water supply tank outlet, be provided with fluid level controller in the water supply tank, also be provided with motor-driven valve on the primary side feed pipe; The porch of primary side feed pipe, secondary side feed pipe, the exit of primary side return pipe, secondary side return pipe are gone here and there respectively and are provided with corresponding temperature and pressure transmitter; Described main circulation pump and main small pump are parallel with spare circulating pump and standby small pump respectively; The equal correspondence of described each pump is provided with control circuit, i.e. main circulation pump control circuit, spare circulating pump control circuit, main small pump control circuit, standby small pump control circuit; Each control circuit constitutes the energy saving control system of frequency conversion in use of described energy-saving and frequency-variable heat exchange station with a PLC automation control module, described PLC automation control module input sample connects the information that above-mentioned each temperature and pressure transmitter is gathered, and output drives and connects each control circuit and described motor-driven valve; Described main circulation pump control circuit, spare circulating pump control circuit are installed in the circulating pump frequency conversion tank, described main small pump control circuit, standby small pump control circuit are installed in the small pump frequency conversion tank, and described PLC automation control module is installed in the PLC automation switch board.
Scheme of the present utility model provides a kind of warm heat exchange station that has intelligence, energy-saving control system, PLC automation control is matched with circulating pump VFC, small pump VFC, and control systemization can realize intelligent energy-saving run, and unmanned, the automaticity height.
The control circuit structure of described each pump is identical, constitute by frequency conversion loop that isolates interlocking mutually and standby power frequency loop, described frequency conversion loop one end connects the corresponding wiring terminal of described PLC automation switch board, the other end connects the binding post of corresponding water pump, connect first air switch between the two-terminal successively, the input reactance device, input filter, frequency converter, output filter, out put reactor, first contactor, described standby power frequency loop one end connects the corresponding wiring terminal of described PLC automation switch board, the other end connects the binding post of corresponding water pump, connects second air switch between the two-terminal successively, second contactor, electrothermal relay.
PLC in the described PLC automation switch board, on its output port respectively communication be connected with touch-screen, thermometric instrument, manometer, liquid level instrument (YW) and motor-driven valve adjusting apparatus (FW), and adopt the RS485 communication modes, go here and there between PLC and touch-screen, each instrument to be provided with and be used to improve the observing and controlling precision, prevent the analog signal isolator assembly (LY1) that disturbs; Also be provided with the terminal that is used to connect described circulating pump frequency conversion tank and moisturizing frequency conversion tank in the described PLC switch board, be serially connected with switching signal isolator assemblies (LY2) on the described terminal.
Described thermometric instrument, manometer, valve position instrument, liquid level instrument are installed in described PLC automation switch board panel top, touch-screen is installed in cabinet panel bottom, bottom, cabinet back door has dustproof grid (LW), and top, cabinet back door is provided with cooling fan (FS); Also be provided with in the cabinet and be used for the ferrite bead that the control signal cable passed all, prevented that higher hamonic wave from disturbing.
Be equipped with control power supply (KD) and supporting surge assembly (1LY), lightning protection component (1FL) in described circulating pump frequency conversion tank and the small pump frequency conversion tank.
Power instrument (A11, A12), temperature instrumentation (TG1), indicator lamp (1GL, 1BL, 1HL, DY, BG, 2GL, 2BL, 2HL), control button (1SA, 2SA, KSA, MSA) all are installed on described each frequency conversion tank panel; Thermometric thermal resistance (PT) is installed on the top of frequency conversion tank; The rear cabinet door upside is equipped with radiator fan, and the rear cabinet door downside has air intake filter bar grid grid; Also be provided with in the cabinet and be used for the ferrite bead that the control signal cable passed all, prevented that higher hamonic wave from disturbing.
Described PLC adopts Siemens S7-200 CN series 226 CN AC.
Description of drawings
Fig. 1 is programme controlled energy-saving and frequency-variable heat exchange station system block diagram of the present utility model;
Fig. 2 is a PLC automation switch board panel schematic diagram;
Fig. 3 is a PLC automation switch board internal placement schematic diagram;
Fig. 4 is PLC and each instrument, frequency converter connected system figure;
Fig. 5 is frequency conversion tank panel figure;
Fig. 6 is frequency conversion tank electrical principle and internal layout.
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
Programme controlled energy-saving and frequency-variable heat exchange station as shown in Figure 1, comprise heat exchange pipeline system and energy saving control system of frequency conversion in use, the heat exchange pipeline system comprises the primary side circulating water secondary side circulation of unifying, the primary side circulating water secondary side circulation of unifying is carried out heat exchange by heat exchanger 5, secondary side returns to go here and there on the waterway tube 4 and is provided with main circulation pump 6, main small pump 7 links to each other with water supply tank 8 outlets, be provided with fluid level controller 9 in the water supply tank 8, the feed pipe 3 of secondary side links to each other by the heat exchanger bypass pipe with return pipe 4, also is provided with motor-driven valve 15 on the primary side feed pipe 1; The porch of primary side feed pipe 1, secondary side feed pipe 3, the exit of primary side return pipe 2, secondary side return pipe 4 are gone here and there respectively and are provided with corresponding temperature and pressure transmitter (10,11,12,18), also are provided with heat metering device 13 on the secondary side water return pipeline 4.
Main circulation pump 6 is parallel with spare circulating pump 16 and standby small pump 17 respectively with main small pump 7; The equal correspondence of described each pump is provided with control circuit, i.e. main circulation pump control circuit, spare circulating pump control circuit, main small pump control circuit, standby small pump control circuit; Each control circuit constitutes described energy saving control system of frequency conversion in use with a PLC automation control module, and PLC automation control module input sample connects the information that above-mentioned each temperature and pressure transmitter is gathered, and output drives and connects each control circuit and described motor-driven valve; Main circulation pump control circuit, spare circulating pump control circuit are installed in the circulating pump frequency conversion tank 22, main small pump control circuit, standby small pump control circuit are installed in the small pump frequency conversion tank 23, and PLC automation control module is installed in the PLC automation switch board 21.System also is provided with outdoor temperature sensor 14.
The control circuit structure of above-mentioned each pump is identical, for being installed in the frequency conversion tank of the primary, spare water pump of same class, so whole system is made up of 1 PLC automation switch board, 2 frequency conversion tank (1 circulating pump frequency conversion tank, 1 small pump frequency conversion tank).Programmable Logic Controller PLC has adopted Siemens S7-200 CN series CPU 226 CN AC, and touch-screen adopts K-TP178micro, finishes and being connected of S7-200 CN controller by point-to-point connection (PPI or MPI).Be characterized in that this combination has good stable and anti-interference, traffic rate can reach 187.5kbaud, when configuration K-TP178micro can with the I/O auto-associating of S7-200 CN, make that programming is more convenient.Employing has advanced control appliance and advanced mechanicss of communication such as frequency converter, Siemens S7-200CN Programmable Logic Controller and supporting professional touch-screen, the digital display intelligent instrument of low discharge function.The whole control system can realize circulating pump, the small pump of concentrating programme controlled energy-saving and frequency-variable heat exchange station are carried out variable frequency regulating speed control, and the monitoring of heat exchanging system associated temperature, pressure, liquid level, motor-driven valve.
Shown in Fig. 2,3,4, in the PLC automation switch board, be provided with PLC, be connected with touch-screen HMI on its output port respectively, thermometric instrument (S11, S12, S21, S22, TH, TG), manometer (P11, P12, P21, P22), liquid level instrument YW and motor-driven valve adjusting apparatus FW, adopt the RS485 communication between PLC and touch-screen HMI and the above-mentioned measure and control instrument, adopt the AIBUS agreement to carry out networking, be serially connected with between PLC and each instrument, the touch-screen HMI and be used to improve the observing and controlling precision, prevent the analog signal isolator assembly LY1 that disturbs; Also be provided with the terminal that is used to connect described circulating pump frequency conversion tank and moisturizing frequency conversion tank in the PLC switch board, be serially connected with switching signal isolator assemblies LY2 on the terminal.Thermometric instrument, manometer, valve position instrument, liquid level instrument are installed in switch board panel top, touch-screen HMI is installed in switch board panel bottom, bottom, cabinet back door has dustproof grid LW11, and top, cabinet back door is provided with cooling fan (FS11, FS12); The terminal row DZ11 that connects each instrument is arranged on analog signal barrier assembly LY1 top, and the terminal row DZ12 that connects frequency conversion tank is arranged on switching signal isolator assemblies LY2 bottom.Also be provided with in the cabinet and be used for the ferrite bead that the control signal cable passed all, prevented that higher hamonic wave from disturbing.
The circulating pump frequency conversion tank is similar to mounting structure to small pump frequency conversion tank electrical structure, is two VFC configurations, as shown in Figure 6.With the circulating pump frequency conversion tank is example, is provided with 2 circulating pump electrical control major loops in the frequency conversion tank, controls main circulation pump and spare circulating pump respectively.Every circulating pump electrical control major loop is made up of frequency conversion loop and standby power frequency loop, frequency conversion loop and standby power frequency loop isolate by the contactor interlocking, as KM1 among Fig. 6 and KM2 interlocking, KM3 and KM4 interlocking prevent that power frequency supply from sealing in the frequency converter output loop and damaging frequency converter.The interlocking of contactor is dual electrical interlocks, comprises interlocking of contactor normally-closed contact and PLC programming interlocking.
The frequency conversion loop of spare circulating pump and power frequency loop configuration are similar to main circulation pump, only simply introduce the configuration of main circulation pump here.As shown in Figure 6, the frequency conversion loop of main circulation pump is made up of air switch 1QL, input reactance device T11, input filter F11, frequency converter B P11, output filter F12, out put reactor T12, contactor KM1; The standby power frequency loop of main circulation pump is made up of air switch 2QL, contactor KM2, electrothermal relay KR1.When PLC control system converting operation main circulation pump, contactor KM1 connects, frequency converter B P11 control main circulation pump converting operation.When frequency converter B P11 or main circulation pump fault, the PLC control system stops frequency converter B P11 run signal, disconnects contactor KM1, connects contactor KM3, control frequency converter B P22 operation, thereby the operation of control spare circulating pump.
As shown in Figure 5, frequency conversion tank (circulating pump is identical with the frequency conversion tank of small pump) panel is equipped with power instrument (A11, A12), temperature instrumentation TG1, indicator lamp (1GL, 1BL, 1HL, DY, BG, 2GL, 2BL, 2HL), control button (1SA, 2SA, KSA, MSA) device.On the top of frequency conversion tank thermometric thermal resistance PT is installed, signal send panel temperature instrumentation TG1 monitoring.Cooling fan FS cooling is adopted in the heat radiation of frequency conversion tank, and radiator fan is installed in the rear cabinet door upside, and the rear cabinet door downside has air intake filter bar grid grid LW.Also be provided with control power supply KD and supporting surge assembly 1LY, lightning protection component 1FL in the cabinet, and be provided with zero line row N, ground connection row PE.The left side is fixed with relay assembly KK and control line terminal row DZ1 etc. in the cabinet.The control cable of turnover frequency conversion tank, signal cable etc. all adopt shielded cable, and wear ferrite bead FE, in case high-frequency harmonic disturbs.
The circulating pump frequency conversion tank is provided with automatic frequency-conversion and manual two kinds of control models of power frequency.Manually but the power frequency pattern is convenient to when the automatic system fault still power frequency operation circulating pump, guarantees the heating reliability.During automatic frequency-conversion, frequency converter and Programmable Logic Controller PLC communicate, and according to the supply backwater temperature difference signal that the heat supply requirement is set, regulate the frequency converter running frequency, and the control motor speed is regulated the circulating pump output flow, thereby reach the purpose of adjusting temperature.The small pump frequency conversion tank also is provided with automatic frequency-conversion and manual two kinds of control models of power frequency.Manually but the power frequency pattern is convenient to when the automatic system fault still power frequency operation small pump.During automatic frequency-conversion, frequency converter and Programmable Logic Controller PLC communicate, frequency converter is set to inner PID control model and low discharge energy conservation model, secondary pressure of return water signal send frequency converter to carry out PID and handles, require the secondary pressure of return water value of setting according to heat supply, control frequency converter running frequency, the control motor speed is regulated the small pump flow, thereby reaches the purpose of control secondary water return pipeline pressure.
Claims (6)
1. programme controlled energy-saving and frequency-variable heat exchange station, comprise heat exchange pipeline system and energy saving control system of frequency conversion in use, described pipe-line system comprises the primary side circulating water secondary side circulation of unifying, the primary side circulating water secondary side circulation of unifying is carried out heat exchange by heat exchanger, secondary side returns to go here and there on the waterway tube and is provided with main circulation pump, and the continuous main small pump of water supply tank outlet is provided with fluid level controller in the water supply tank, also be provided with motor-driven valve on the primary side feed pipe, it is characterized in that:
The porch of primary side feed pipe, secondary side feed pipe, the exit of primary side return pipe, secondary side return pipe are gone here and there respectively and are provided with corresponding temperature and pressure transmitter;
Described main circulation pump and main small pump are parallel with spare circulating pump and standby small pump respectively;
The equal correspondence of described each pump is provided with control circuit, i.e. main circulation pump control circuit, spare circulating pump control circuit, main small pump control circuit, standby small pump control circuit; Each control circuit constitutes the energy saving control system of frequency conversion in use of described energy-saving and frequency-variable heat exchange station with a PLC automation control module, described PLC automation control module input sample connects the information that above-mentioned each temperature and pressure transmitter is gathered, and output drives and connects each control circuit and described motor-driven valve;
Described main circulation pump control circuit, spare circulating pump control circuit are installed in the circulating pump frequency conversion tank, described main small pump control circuit, standby small pump control circuit are installed in the small pump frequency conversion tank, and described PLC automation control module is installed in the PLC automation switch board.
2. a kind of programme controlled energy-saving and frequency-variable heat exchange station according to claim 1, it is characterized in that, the control circuit structure of described each pump is identical, constitute by frequency conversion loop that isolates interlocking mutually and standby power frequency loop, described frequency conversion loop one end connects the corresponding wiring terminal of described PLC automation switch board, the other end connects the binding post of corresponding water pump, connect first air switch between the two-terminal successively, the input reactance device, input filter, frequency converter, output filter, out put reactor, first contactor, described standby power frequency loop one end connects the corresponding wiring terminal of described PLC automation switch board, the other end connects the binding post of corresponding water pump, connects second air switch between the two-terminal successively, second contactor, electrothermal relay.
3. a kind of programme controlled energy-saving and frequency-variable heat exchange station according to claim 2, it is characterized in that, PLC in the described PLC automation switch board, on its output port respectively communication be connected with touch-screen, thermometric instrument, manometer, liquid level instrument (YW) and motor-driven valve adjusting apparatus (FW), and adopt the RS485 communication modes, go here and there between PLC and touch-screen, each instrument to be provided with and be used to improve the observing and controlling precision, prevent the analog signal isolator assembly (LY1) that disturbs; Also be provided with the terminal that is used to connect described circulating pump frequency conversion tank and moisturizing frequency conversion tank in the described PLC automation switch board, be serially connected with switching signal isolator assemblies (LY2) on the described terminal.
4. a kind of programme controlled energy-saving and frequency-variable heat exchange station according to claim 3, it is characterized in that, described thermometric instrument, manometer, valve position instrument, liquid level instrument are installed in described PLC automation switch board panel top, touch-screen is installed in cabinet panel bottom, bottom, cabinet back door has dustproof grid (LW), and top, cabinet back door is provided with cooling fan (FS); Also be provided with in the cabinet and be used for the ferrite bead that the control signal cable passed all, prevented that higher hamonic wave from disturbing.
5. a kind of programme controlled energy-saving and frequency-variable heat exchange station according to claim 4 is characterized in that, is equipped with control power supply (KD) and supporting surge assembly (1LY), lightning protection component (1FL) in described circulating pump frequency conversion tank and the small pump frequency conversion tank.
6. a kind of programme controlled energy-saving and frequency-variable heat exchange station according to claim 5, it is characterized in that, power instrument (A11, A12), temperature instrumentation (TG1), indicator lamp (1GL, 1BL, 1HL, DY, BG, 2GL, 2BL, 2HL), control button (1SA, 2SA, KSA, MSA) all are installed on described each frequency conversion tank panel; Thermometric thermal resistance (PT) is installed on the top of frequency conversion tank; The rear cabinet door upside is equipped with radiator fan, and the rear cabinet door downside has air intake filter bar grid grid; Also be provided with in the cabinet and be used for the ferrite bead that the control signal cable passed all, prevented that higher hamonic wave from disturbing.
7.According to each described a kind of programme controlled energy-saving and frequency-variable heat exchange station among the claim 1-6, it is characterized in that described PLC adopts Siemens S7-200 CN series 226 CN AC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205771506U CN201858698U (en) | 2010-10-26 | 2010-10-26 | Programmed frequency conversion energy-saving heat exchange station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205771506U CN201858698U (en) | 2010-10-26 | 2010-10-26 | Programmed frequency conversion energy-saving heat exchange station |
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| CN201858698U true CN201858698U (en) | 2011-06-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269445A (en) * | 2011-07-19 | 2011-12-07 | 史雪梅 | Heating system energy-saving control device |
| CN102305432A (en) * | 2011-07-19 | 2012-01-04 | 史雪梅 | Monitoring system and method of heat supply network |
| CN102620347A (en) * | 2012-04-24 | 2012-08-01 | 曾涛 | Control method for heating circulation pump compensated by using solar radiation |
| CN103021253A (en) * | 2011-09-21 | 2013-04-03 | 沈阳理工大学 | Open-type hot water boiler heating experimental system |
| CN106605049A (en) * | 2014-08-01 | 2017-04-26 | Imo工业股份有限公司 | Intelligent sea water cooling system |
-
2010
- 2010-10-26 CN CN2010205771506U patent/CN201858698U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269445A (en) * | 2011-07-19 | 2011-12-07 | 史雪梅 | Heating system energy-saving control device |
| CN102305432A (en) * | 2011-07-19 | 2012-01-04 | 史雪梅 | Monitoring system and method of heat supply network |
| CN102305432B (en) * | 2011-07-19 | 2013-08-07 | 史雪梅 | Monitoring system and method of heat supply network |
| CN103021253A (en) * | 2011-09-21 | 2013-04-03 | 沈阳理工大学 | Open-type hot water boiler heating experimental system |
| CN102620347A (en) * | 2012-04-24 | 2012-08-01 | 曾涛 | Control method for heating circulation pump compensated by using solar radiation |
| CN102620347B (en) * | 2012-04-24 | 2013-10-23 | 曾涛 | Control method for heating circulation pump compensated by using solar radiation |
| CN106605049A (en) * | 2014-08-01 | 2017-04-26 | Imo工业股份有限公司 | Intelligent sea water cooling system |
| CN106605049B (en) * | 2014-08-01 | 2019-11-15 | 色蔻泵北美有限责任公司 | Intelligent salt water cooling system |
| US10583908B2 (en) | 2014-08-01 | 2020-03-10 | Circor Pumps North America, Llc | Intelligent sea water cooling system |
| US10669002B2 (en) | 2014-08-01 | 2020-06-02 | Circor Pumps North America, Llc | Intelligent sea water cooling system |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110608 Termination date: 20131026 |