CN110529921A - A kind of heating network system thermal energy Efficient utilization method - Google Patents
A kind of heating network system thermal energy Efficient utilization method Download PDFInfo
- Publication number
- CN110529921A CN110529921A CN201910780427.0A CN201910780427A CN110529921A CN 110529921 A CN110529921 A CN 110529921A CN 201910780427 A CN201910780427 A CN 201910780427A CN 110529921 A CN110529921 A CN 110529921A
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- China
- Prior art keywords
- frequency
- pump
- pressure
- power
- power supply
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
-
- 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
Abstract
The present invention is a kind of heating network system thermal energy Efficient utilization method, including variable-frequency governor, two sets of power supply switching bypass cabinets, draws two-way variable-frequency governor power supply respectively by high-voltage board and enters bypass cabinet；It is characterized in that under normal circumstances, reached using a set of frequency converter and two sets of bypass cabinets while controlling the total main pipe heat circulation pump of two different power supply power supplies, by by Frequency Converter Control information access original heating system PLC control system, by the method for heating system pipe network outlet pressure and conversion frequencies interlocking, achieve the purpose that dynamic equilibrium heat supply pipe pressure.Most economical heating network operation and regulative mode can be realized with least investment.
Description
Technical field
Present invention is mainly used for heating network automatic control systems, and in particular to a kind of heating network system thermal energy is efficiently sharp
Use method.
Background technique
Five blast furnace slag quenching water heat network system of Taiyuan Iron and Steel Co. energy source and power head factory is high to requiring for pressure of return water, and hypotony influences
The heat dissipation of the exhaust-heat boiler flue gas such as CDQ, hypertonia influence five blast furnace slag flushing systems and operate normally, and original control measures are only to control
Circulating-pump outlet door is the only resource.Because the heating system at one station of concurrent heating enjoys the direct phase of a relay station with north of the city heating power outside company
It is logical, external user regulation or it is abnormal when, because circulating pump can not adjust automatically, often make heat distribution pipeline by enormous impact, cause
Pipeline valve flange leak, meter damages on the spot along the line, and circulating pump equipment fault serious person collapses out pipeline-weld, only sends out within 2016
As many as raw above situation 8 times, security of system is had a greatly reduced quality.One station of concurrent heating can only be adjusted by control loop pump discharge door flows
Amount, control pressure etc., causes pressure superelevation in the pump housing, the frequent leak of circulating pump differential, only orchid is tamped in circulating pump leak in 2016
Processing 54 times, maintenance load is huge.
Summary of the invention
The invention aims to realize to control heating network system optimization, make heating network system safety, economic, height
The operation of effect ground, improves heat utilization rate.
A kind of heating network system thermal energy Efficient utilization method, including frequency converter, two sets of power supply switching bypass cabinets,
Draw two-way converter plant power supply respectively by high-voltage board and enters bypass cabinet.
Under normal circumstances, by one heat circulation pump converting operation of a set of frequency converter band, at another circulating pump
In power frequency hot stand-by duty；
When the heat circulation pump of converting operation needs out of service, first stop heating cycle pump operation, then in power-off condition
It is lower that heat circulation pump is gone into power frequency hot stand-by duty；
Another circulating pump in power frequency hot stand-by duty is gone into converting operation position；
2, using two circulating-pump outlet pressure as the Correlation Criteria of variable frequency adjustment, heating cycle pump discharge pressure, which is arranged, is
0.9MPa, when pressure is lower than 0.9MPa, pressure transmitter passes signal back PLC, automatic to increase through PLC Output Control Program
Converter plant running frequency；Equally, when pressure is higher than 0.9MPa, pressure transmitter passes signal back PLC, exports and controls through PLC
Processing procedure sequence, it is automatic to reduce converter plant running frequency.
The present invention carries out load adjustment according to the pressure oscillation of heat network system at any time；It changes and (works as ring in running on the lower load
Border temperature increases, when user reduces valve opening) under when working, outer net payload can only be adjusted by controlling opening of valve
Method.The mode that energy can only be eliminated by water pump and valve is also changed simultaneously, is realized motor power output and is born according to different
Lotus changes and changes, and avoids the waste of electric energy.Make heating network system safety simultaneously, economically and efficiently run, improves thermal energy
Utilization rate.
It is calculated according to converting operation frequency 45Hz, power saving rate is just 27.1%.Current 300,000 degree of pump operation moon power consumption of list, supplies
The hot time according to 150 days, can save 40.7 ten thousand degree, single pump is each can at least to be saved for the hot season: 40.7 ten thousand degree × 0.42 yuan/degree
=17 ten thousand yuan.It is calculated by area of heat-supply service in 2018, must now open two heat pumps and just be able to satisfy user's heat demand, therefore, one
Year can reduce 170,000 yuan of electric cost expenditure.
Detailed description of the invention
Fig. 1 is heating network system diagram of the embodiment of the present invention.
Specific embodiment
Embodiment: one station of Taiyuan Iron and Steel Co. energy source and power head factory concurrent heating shares four circulating pumps, wherein 1# circulating pump, 2# circulating pump
It is fed out by I section of bus of 10kV；3# circulating pump, 4# circulating pump are fed out by II section of bus of 10kV.
Shown in Fig. 1,1# circulating pump, 4# circulating pump realize two kinds of methods of operation of power frequency and frequency conversion by bypass cabinet.Work as place
When converting operation, 1# circulating pump, 4# circulating pump can only have a pump in frequency conversion state.
One circulating pump (1# circulating pump) converting operation, pulls open QS2, QS4 disconnecting link, closes QS1, QS3 disconnecting link.
Another circulating pump (4# circulating pump) is in power frequency hot stand-by duty；When the 1# circulating pump needs of converting operation move back
Out when converting operation, first stops 1# pump operating cycle, 1# circulating pump is then gone into power frequency stand-by heat shape under power-off condition
State；Then the 4# circulating pump in power frequency hot stand-by duty is gone into converting operation position.
Using 1# circulating pump, 4# circulating-pump outlet pressure as the Correlation Criteria of variable frequency adjustment, two circulations are set and are pumped out
Mouth pressure is 0.9MPa, and when pressure is lower than 0.9MPa, PLC control pressure transmitter increases frequency converter running frequency automatically；When
When pressure is higher than 0.9MPa, PLC control pressure transmitter reduces frequency converter running frequency automatically.
When QS1, QS3, QS5, QS7 disconnecting link are all off, 1# can be pumped, 4# pump is converted to power frequency operation.Close
QS2, QS4, QS6, QS8 disconnecting link.
There is electric interlock between QS1, QS2, also there is electric interlock between QS3, QS4.
Similarly, another 4# pump is also interlocking.And also interlocking between 1# pump and 4# pump, a pump can only be made to be in
Converting operation state.That is when heating system only needs a pump operation, (such as preliminary heating period, i.e., at the beginning of 11 months, weather is also
It is not the terribly cold period, opening a pump can meet the requirements；Another period is exactly the March of next year, and weather has turned dim),
So just only open a variable frequency pump.When weather is colder, and return water temperature is lower than 45 degree, a general pump (2# pump or 3# are just increased
Pump), the power output of general pump is come from and is approached at full capacity (the economical operation state of motor), then, by variable frequency pump according to outlet
The dynamic auto adjusting ductwork pressure of the feedback of pressure, makes heating network system be in economical operation state.
Claims (1)
1. a kind of heating network system thermal energy Efficient utilization method, including variable-frequency governor, two sets of power supply switching bypass cabinets, pass through
High-voltage board draws two-way variable-frequency governor power supply respectively and enters bypass cabinet；It is characterized in that under normal circumstances, by a set of frequency conversion tune
One heat circulation pump converting operation of fast device band, another circulating pump are in power frequency hot stand-by duty；
When the heat circulation pump of converting operation needs out of service, first stop heating cycle pump operation, then in power-off condition
It is lower that heat circulation pump is gone into power frequency hot stand-by duty；Another circulating pump in power frequency hot stand-by duty is gone into frequency conversion fortune
Line position is set；Using two circulating-pump outlet pressure as the Correlation Criteria of variable frequency adjustment, heating cycle pump discharge pressure, which is arranged, is
0.9MPa, when pressure is lower than 0.9MPa, pressure transmitter passes signal back PLC, automatic to increase through PLC Output Control Program
Converter plant running frequency；When pressure is higher than 0.9MPa, pressure transmitter passes signal back PLC, exports control journey through PLC
Sequence, it is automatic to reduce converter plant running frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910780427.0A CN110529921A (en) | 2019-08-22 | 2019-08-22 | A kind of heating network system thermal energy Efficient utilization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910780427.0A CN110529921A (en) | 2019-08-22 | 2019-08-22 | A kind of heating network system thermal energy Efficient utilization method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110529921A true CN110529921A (en) | 2019-12-03 |
Family
ID=68662637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910780427.0A Pending CN110529921A (en) | 2019-08-22 | 2019-08-22 | A kind of heating network system thermal energy Efficient utilization method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110529921A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202595816U (en) * | 2012-05-30 | 2012-12-12 | 四川嘉好变频供水设备科技有限公司 | Intelligent negative-pressure-free frequency conversion constant-voltage water supply system |
| EP2728269A1 (en) * | 2012-10-30 | 2014-05-07 | Vaillant GmbH | Method for hydraulic calibration of a heating system |
| CN204185909U (en) * | 2014-09-09 | 2015-03-04 | 江南大学 | A kind of frequency control constant voltage pipe network water supply system |
| CN104675686A (en) * | 2015-01-01 | 2015-06-03 | 山西太钢不锈钢股份有限公司 | Automatic adjusting method of water supply pressure |
| CN204732959U (en) * | 2015-06-18 | 2015-10-28 | 山西太钢不锈钢股份有限公司 | A kind of Dual-power device of electrical appliance |
| US20150354309A1 (en) * | 2011-06-06 | 2015-12-10 | Reel Power Licensing Corp | Method for increasing subsea accumulator volume |
| CN108334994A (en) * | 2018-03-20 | 2018-07-27 | 哈尔滨工业大学 | A kind of heating network flow and pressure monitoring point optimization placement method |
-
2019
- 2019-08-22 CN CN201910780427.0A patent/CN110529921A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150354309A1 (en) * | 2011-06-06 | 2015-12-10 | Reel Power Licensing Corp | Method for increasing subsea accumulator volume |
| CN202595816U (en) * | 2012-05-30 | 2012-12-12 | 四川嘉好变频供水设备科技有限公司 | Intelligent negative-pressure-free frequency conversion constant-voltage water supply system |
| EP2728269A1 (en) * | 2012-10-30 | 2014-05-07 | Vaillant GmbH | Method for hydraulic calibration of a heating system |
| CN204185909U (en) * | 2014-09-09 | 2015-03-04 | 江南大学 | A kind of frequency control constant voltage pipe network water supply system |
| CN104675686A (en) * | 2015-01-01 | 2015-06-03 | 山西太钢不锈钢股份有限公司 | Automatic adjusting method of water supply pressure |
| CN204732959U (en) * | 2015-06-18 | 2015-10-28 | 山西太钢不锈钢股份有限公司 | A kind of Dual-power device of electrical appliance |
| CN108334994A (en) * | 2018-03-20 | 2018-07-27 | 哈尔滨工业大学 | A kind of heating network flow and pressure monitoring point optimization placement method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191203 |