CN105757759A - Heat efficiency-optimized first steam-water heat exchange station and running method thereof - Google Patents
Heat efficiency-optimized first steam-water heat exchange station and running method thereof Download PDFInfo
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- CN105757759A CN105757759A CN201610267835.2A CN201610267835A CN105757759A CN 105757759 A CN105757759 A CN 105757759A CN 201610267835 A CN201610267835 A CN 201610267835A CN 105757759 A CN105757759 A CN 105757759A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 279
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 70
- 230000005494 condensation Effects 0.000 claims abstract description 70
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 62
- 238000011161 development Methods 0.000 claims description 50
- 230000002209 hydrophobic effect Effects 0.000 claims description 50
- 238000010992 reflux Methods 0.000 claims description 31
- 230000002159 abnormal effect Effects 0.000 claims description 15
- 239000008400 supply water Substances 0.000 claims description 14
- 238000012423 maintenance Methods 0.000 claims description 12
- 230000036772 blood pressure Effects 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 238000012546 transfer Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000003020 moisturizing effect Effects 0.000 description 7
- 238000007701 flash-distillation Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 241000242583 Scyphozoa Species 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
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- 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
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- 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
-
- 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
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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- 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
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
-
- 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
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a heat efficiency-optimized first steam-water heat exchange station and a running method thereof.A heat source of a first heat exchanger comprises three parts, wherein the third part is achieved by arranging a drain flash tank at a condensation water outlet of a second heat exchanger and a third exchanger of the first steam-water heat exchange station; high-pressure condensation water generated through high-pressure steam condensation heat exchange and steam generated through secondary evaporation are collected and recycled through the drain flash tank respectively and then enter the first heat exchanger for secondary heat exchange, and energy sources are fully utilized.According to the heat efficiency-optimized first steam-water heat exchange station and the running method thereof, an electric control valve arranged on a high-temperature water return pipeline is controlled through a temperature measuring instrument arranged at the head end of a high-temperature water supplying pipeline, and through the design, the temperature of high-temperature supplied water is adjusted in time according to the changes of the heat exchange amount needed by a user of the first steam-water heat exchange station; a pressure regulating valve is only arranged on a standby steam heating bypass pipeline of the first heat exchanger, no pressure regulating valve is arranged on the other steam heating pipelines of the three heat exchangers, therefore, it is guaranteed that the steam pressure drop at inlets of the heat exchangers is small and the heat transfer temperature difference is large, and it is further guaranteed that only the small heat exchange area of the heat exchangers is needed.
Description
Technical field
The present invention relates to heating system, refer in particular to a kind of thermal efficiency and optimize steam-water heat exchanging initial station and operation method thereof.
Background technology
Steam-water heat exchanging initial station is the core component of resident's heating system.Setting generally mate in steam-water heat exchanging initial station with thermal power plant, the steam done work that steam turbine of thermal power plant is generated electricity carry out again with.The vapor phase that thermal power plant's power generation cycle goes out is than heating demands pressure, temperature is higher, directly apply to the heat exchanger of steam-water heat exchanging initial station, limited efficacy, and it is unfavorable for the operation steady in a long-term of equipment, simultaneously because the thermic load of resident's heating demands exists certain fluctuation, present steam-water heat exchanging initial station also exists, in the face of complicated heat demand, the problem that the thermal efficiency is low.
For convenience of describing, for a certain purpose thermic load in winter total amount for 40MW.
(1) conventional vapour-water first heat exchange station, circulation pump of heat-supply network is generally adopted 2 × 100% electric water circulating pumps, an operation, and one standby, and motor adopts variable frequency adjustment；Heat exchanger is generally adopted 2 × 75% thermic loads, heat exchange amount 30MW.When user side thermic load is lower than 30MW, only a heat exchanger runs；When the thermic load of user side is when 30MW to 40MW at full capacity, should each be undertaken the thermic load of 50% by two heat exchangers.When user's thermic load diminishes, can pass through to regulate heat exchanger entrance place steam control valve and regulate the quantity of steam entering heat exchanger, make high temperature supply water temperature maintain desired level.
This system exist two basic problems: 1., water circulating pump adopt powered version, operating cost is relatively larger, and motor inverter initial cost is bigger；2., when user's thermic load is far below 30MW, from heat load adjustment aspect, underaction is convenient.
(2) the second system, circulation pump of heat-supply network adopts 2 × 100% water circulating pumps, and wherein one is Steam Turbine Driven, properly functioning at ordinary times, and 1 drives for motor, as standby；Heat exchanger still adopts 2 × 75% thermic loads, heat exchange amount 30MW.Under nominal situation, low-quality steam after thermal source superheated steam driving steam-operating water circulating pump accesses a wherein heat exchanger (First Heat Exchanger) and carries out heat exchange, this heat exchanger undertakes sub-fraction thermic load, about 25%, an other heat exchanger (the second heat exchanger) then directly connects thermal source superheated steam, undertake most thermic load, about 75%.
There is a basic problem in this system: this system arranges the purpose of steam-operating water circulating pump and is in that to reduce operating cost, nominal situation longtime running, when user's thermic load requires more than 30% maximum heating load, need two heat exchangers of operation simultaneously, the operation time is relatively long, and second heat exchanger continue oepration at full load, be subjected to impact equipment life, and the runing adjustment of this system is not reasonable.
Summary of the invention
The first object of the present invention is in that to overcome the existing steam-water heat exchanging initial station thermal efficiency low and provide a kind of thermal efficiency to optimize steam-water heat exchanging initial station.The second object of the present invention is in that to provide the operation method applying above-mentioned thermal efficiency optimization steam-water heat exchanging initial station.
The first object of the present invention is realizing by following technical scheme:
The thermal efficiency optimizes steam-water heat exchanging initial station, including the first heat exchanger；The steam input of described first heat exchanger is connected with from plant area's main steam header road by the second electric butterfly valve；The steam input of described first heat exchanger is connected with the steam output end of steam-operating water circulating pump also by the 15th electric butterfly valve；The steam input of described first heat exchanger is also connected with the steam output end of hydrophobic development unit；
The steam condensate outfan of described first heat exchanger is connected with condensing water reflux line by steam trap；The high-temperature water input of described first heat exchanger is connected with high-temperature water backwater input channel by the 7th electric butterfly valve；The high-temperature water outfan of described first heat exchanger is connected with high-temperature water water supply line；
Described from plant area's main steam header road also steam input respectively through the 3rd electric butterfly valve, the 4th electric butterfly valve and the second heat exchanger, the 3rd heat exchanger be connected；Described high-temperature water water supply line is also connected with the high-temperature water outfan of described second heat exchanger, described 3rd heat exchanger respectively；The water input that condenses of described hydrophobic development unit is also connected with the steam condensate outfan of described second heat exchanger, described 3rd heat exchanger respectively；The condensation water outfan of described hydrophobic development unit is connected with described condensation water reflux line；Described high-temperature water backwater input channel is also connected with the high-temperature water input of described second heat exchanger, described 3rd heat exchanger respectively through the 8th electric butterfly valve, the 9th electric butterfly valve；
Described condensation water reflux line is connected with pipeline between boiler waterwheel respectively through the first condensate pump and the second condensate pump；Described first condensate pump input is provided with the 9th butterfly valve, and described first condensate pump outfan is provided with the tenth butterfly valve；Described second condensate pump input is provided with the 11st butterfly valve, and described second condensate pump outfan is provided with the 12nd butterfly valve；
The steam input of described steam-operating water circulating pump is connected from plant area's main steam header road with described by the first electric butterfly valve；The high-temperature water input of described steam-operating water circulating pump is connected with high-temperature water water return pipeline by the 12nd electric butterfly valve；The high-temperature water outfan of described steam-operating water circulating pump is connected with described high-temperature water backwater input channel by the 6th butterfly valve；
Described high-temperature water water return pipeline is connected with the high-temperature water input of electric water circulating pump also by the 13rd electric butterfly valve, and the high-temperature water outfan of described electric water circulating pump is connected with described high-temperature water backwater input channel by the 14th electric butterfly valve；Described high-temperature water water return pipeline head end has been arranged in parallel the tenth electric butterfly valve, filter, the 11st electric butterfly valve successively.
The steam input of described first heat exchanger is connected from plant area's main steam header road with described by the 5th electric butterfly valve and electric pressure-regulating valve.Described electric pressure-regulating valve pressure be set to consistent with the steam output end of described hydrophobic development unit described in.
Described high-temperature water backwater input channel is connected with described high-temperature water water supply line by electric control valve.
The head end of described high-temperature water water supply line and the head end of described high-temperature water water return pipeline are provided with temperature measuring set；
Described electric control valve is controlled by the temperature measuring set of described high-temperature water water supply line head end；Described steam-operating water circulating pump and described electric water circulating pump are controlled by the temperature measuring set of described high-temperature water water return pipeline head end.
The second object of the present invention is realizing by following technical scheme:
The thermal efficiency optimizes the operation method of steam-water heat exchanging initial station and includes following operating mode:
Accidental conditions:
When the heat exchange calorimetric load of the first heat exchanger can meet demand, open the first electric butterfly valve, the 15th electric butterfly valve；Close the second electric butterfly valve and the 5th electric butterfly valve, from the thermal source superheated steam [P of plant area's main steam header road output1, T1] drive steam-operating water circulating pump to run, the steam [P that the steam turbine of steam-operating water circulating pump is discharged2, T2] enter back into the first heat exchanger by the 15th electric butterfly valve and carry out heat exchange；The condensation water that first heat exchanger produces reduces to P through steam trap pressure3, it is drained to condensation water reflux line；
When the heat exchange calorimetric load of the first heat exchanger can not meet demand, open the 3rd electric butterfly valve and the 4th electric butterfly valve, from the thermal source superheated steam [P of plant area's main steam header road output1, T1] be directly entered the second heat exchanger, the 3rd heat exchanger carries out heat exchange, the condensation water of generation enters hydrophobic development unit, and it is P that hydrophobic development unit flashes off a part of pressure2Steam enter the first heat exchanger and carry out heat exchange；The condensation water pressure that hydrophobic development unit produces reduces to P3, then cause condensation water reflux line；
Abnormal operation condition:
Abnormal operation condition one:
When the second heat exchanger or the 3rd heat exchanger need maintenance, and steam-operating water circulating pump properly functioning time, open the first electric butterfly valve, the 6th electric butterfly valve, the 12nd electric butterfly valve, close the second electric butterfly valve, the 13rd electric butterfly valve, the 14th electric butterfly valve and electric pressure-regulating valve, first heat exchanger, the 3rd heat exchanger or the second heat exchanger are properly functioning, from the thermal source superheated steam [P of plant area's main steam header road output1, T1] drive steam-operating water circulating pump to run, steam [P discharged by steam-operating water circulating pump2, T2] enter back into the first heat exchanger and carry out heat exchange, the condensation water of generation reduces to P through steam trap pressure3, cause condensation water reflux line；
When the first heat exchanger heat exchange calorimetric load can not meet demand, the 4th electric butterfly valve or the 3rd electric butterfly valve can be opened, from the thermal source superheated steam [P of plant area's main steam header road output1, T1] it being directly entered the 3rd heat exchanger or the second heat exchanger carries out heat exchange, the condensation water of generation enters hydrophobic development unit, and it is P that hydrophobic development unit flashes off a part of pressure2Steam, enters the first heat exchanger and carries out heat exchange, and the condensation water pressure that hydrophobic development unit produces reduces to P3, then cause condensation water reflux line；
Abnormal operation condition two:
When the second heat exchanger or the 3rd heat exchanger need maintenance, and during steam-operating water circulating pump irregular operating, need to run electric water circulating pump, close the first electric butterfly valve, the 6th electric butterfly valve, the 12nd electric butterfly valve, opening the second electric butterfly valve, the 13rd electric butterfly valve, the 14th electric butterfly valve, the first heat exchanger is directly accessed the thermal source superheated steam [P from the output of plant area's main steam header road without pressure regulation1, T1], enable the first heat exchanger properly functioning, the condensation water of generation reduces to P through steam trap pressure4, cause condensation water reflux line；
When the first heat exchanger heat exchange calorimetric load can not meet demand, the 4th electric butterfly valve or the 3rd electric butterfly valve can be opened, from the thermal source superheated steam [P of plant area's main steam header road output1, T1] it being directly entered the 3rd heat exchanger or the second heat exchanger carries out heat exchange, the condensation water of generation enters hydrophobic development unit, and hydrophobic development unit flashes off a part of P2Steam, enters the first heat exchanger and carries out heat exchange, and the condensation water pressure that hydrophobic development unit produces reduces to P3, now in the first heat exchanger, pressure maintains P2, through steam trap blood pressure lowering condensation water pressure this maintain P3, it is therefore desirable to close the second electric butterfly valve, open the 5th electric butterfly valve, use electric pressure-regulating valve, make the steam pressure of entrance the first heat exchanger maintain P2；The condensation water that first heat exchanger and hydrophobic development unit produce causes condensation water reflux line；
Abnormal operation condition three: when the first heat exchanger needs maintenance, close the first electric butterfly valve, the second electric butterfly valve, the 5th electric butterfly valve, the 6th electric butterfly valve, the 12nd electric butterfly valve, the 15th electric butterfly valve, stop using steam-operating water circulating pump, run electric water circulating pump, open the 3rd electric butterfly valve and the 4th electric butterfly valve separately or together, from the thermal source superheated steam [P of plant area's main steam header road output1, T1] it is directly entered the second heat exchanger or the 3rd heat exchanger carries out heat exchange, change thermogenetic condensation water and enter hydrophobic development unit, cause condensation water reflux line.
Described operation method, also includes following type water temperature adjustment method:
Accidental conditions:
From the high-temperature water backwater of high-temperature water water return pipeline through the tenth electric butterfly valve, filter, the 11st electric butterfly valve, 12nd electric butterfly valve, enter steam-operating water circulating pump, then through the 6th electric butterfly valve, be respectively connected to the first heat exchanger, the second heat exchanger, the 3rd heat exchanger carry out heat exchange, then converge to high-temperature water water supply line, and the hot water pipe net for user's request side provides hot water；
When user's request side thermic load needs to reduce, by regulating electric control valve, high-temperature water water supply line is mixed into the part backwater without the output of heat exchange high-temperature water water return pipeline, reduces supply water temperature, make high temperature supply water temperature less than being designed for coolant-temperature gage T0；
Abnormal operation condition:
When steam-operating water circulating pump needs repair and maintenance, close the 6th electric butterfly valve, the 12nd electric butterfly valve；Open backwater high-temperature water backwater that the 13rd electric butterfly valve, the 14th electric butterfly valve export from the high-temperature water water return pipeline of user's request side through the tenth electric butterfly valve, filter, the 11st electric butterfly valve, 13rd electric butterfly valve, enter electric water circulating pump, then through the 14th electric butterfly valve, be respectively connected to the first heat exchanger, the second heat exchanger, the 3rd heat exchanger carry out heat exchange, then converge to high-temperature water water supply line, improve hot water for user's request side；
When user's request side thermic load needs to reduce, by regulating electric control valve, high-temperature water water supply line is mixed into the part backwater without the output of heat exchange high-temperature water water return pipeline, reduces supply water temperature, make high temperature supply water temperature less than being designed for coolant-temperature gage T0。
Possessing following advantage in the present invention: water circulating pump adopts 2 × 100% horizontal double suction water circulating pumps, a fortune one is standby, and wherein 1 drives (i.e. electric water pump) for motor, and 1 is Steam Turbine Driven (i.e. steam-operating water pump).Under nominal situation, run steam-operating water circulating pump, can saves energy.
The condensation water out of second, third heat exchanger sets a hydrophobic development unit.The steam that high pressure condensed water after utilizing hydrophobic development unit to collect high steam condensing heat-exchange, recovery double evaporation-cooling produce, enters the first heat exchanger and carries out secondary heat exchange, make full use of the energy.
First heat exchanger thermal source has 3 parts: 1., be directly connected to 0.5MPa, and 267 DEG C of superheated steams are as standby heat source；2., connect steam turbine outlet vapor (0.25MPa, 220 DEG C) as nominal situation thermal source, 3., connect the 3rd heat exchanger and the 3rd heat exchanger and condense after water enters hydrophobic development unit, flash distillation 0.25MPa saturated vapor.Can ensureing the Appropriate application of energy, save the energy, when can guarantee that again pneumatic pump fault, heat exchanger can switch flexibly, and therrmodynamic system is properly functioning.When adopting 3. flash distillation 0.25MPa saturated vapor and heating load to meet to require, regulate electric pressure-regulating valve and make the vapour source being directly connected to consistent with flash-off steam pressure, with supplementary steam.
Setting up electric control valve at high-temperature water backwater mother's pipe, recirculated water passes through mixed water mode while meeting supply water temperature, and reasonable distribution flow is lowered into the quantity of circulating water of heat exchanger, and then reduces the pressure loss flowing through heat exchanger.
Only set pressure-regulating valve at the standby bypass duct adding vapours of the first heat exchanger, three remaining steam pipeline (trace)s of heat exchanger do not set pressure regulator valve, ensureing that heat exchanger inlets steam drop is little, heat transfer temperature difference is big, and then ensures less heat exchanger heat exchange area.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram that the thermal efficiency of the present invention optimizes steam-water heat exchanging initial station.
Fig. 2 is the core component schematic diagram that the thermal efficiency of the present invention optimizes steam-water heat exchanging initial station.
In figure: the first heat exchanger 1；Second heat exchanger 2；3rd heat exchanger 3；Hydrophobic development unit 4；Steam-operating water circulating pump 5；Electric water circulating pump 6；Filter 7；Water softener 8；Soft water water tank 9；Chemicals dosing plant 10；First moisturizing water pump 11；Second moisturizing water pump 12；First condensate pump 13；Second condensate pump 14；Electric control valve 20；Steam trap 39；Electric pressure-regulating valve 40；First stop valve 53；Second stop valve 54；First gate valve 55；Second gate valve 56；Electromagnetic valve 57；From plant area's main steam header road A；High-temperature water water supply line B；High-temperature water water return pipeline C；To pipeline D between boiler waterwheel；Industry water water inlet pipe E；Industry water water inlet pipe F；Water supply pipe G；Condense water reflux line H；High-temperature water backwater input channel J；First electric butterfly valve～the 15th electric butterfly valve a1～a15；First butterfly valve～the 12nd butterfly valve b1～b12.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail, but this embodiment should not be construed limitation of the present invention, only for example, simultaneously by illustrating that advantages of the present invention will become clearer from easy to understand.
The thermal efficiency optimizes steam-water heat exchanging initial station, including the first heat exchanger 1；The steam input of the first heat exchanger 1 is connected with from plant area's main steam header road A by the second electric butterfly valve a2；The steam input of the first heat exchanger 1 is connected with the steam output end of steam-operating water circulating pump 5 also by the 15th electric butterfly valve a15；The steam input of the first heat exchanger 1 is also connected with the steam output end of hydrophobic development unit 4；
The steam condensate outfan of the first heat exchanger 1 is connected with condensing water reflux line H by steam trap 39；The high-temperature water input of the first heat exchanger 1 is connected with high-temperature water backwater input channel J by the 7th electric butterfly valve a7；The high-temperature water outfan of the first heat exchanger 1 is connected with high-temperature water water supply line B；
From plant area's main steam header road A, also steam input respectively through the 3rd electric butterfly valve a3, the 4th electric butterfly valve a4 and the second heat exchanger the 2, the 3rd heat exchanger 3 is connected；High-temperature water water supply line B is also connected with the high-temperature water outfan of the second heat exchanger the 2, the 3rd heat exchanger 3 respectively；The water input that condenses of hydrophobic development unit 4 is also connected with the steam condensate outfan of the second heat exchanger the 2, the 3rd heat exchanger 3 respectively；The condensation water outfan of hydrophobic development unit 4 is connected with condensing water reflux line H；High-temperature water backwater input channel J also high-temperature water input respectively through the 8th electric butterfly valve a8, the 9th electric butterfly valve a9 and the second heat exchanger the 2, the 3rd heat exchanger 3 is connected；
Condense water reflux line H to be connected with pipeline D between boiler waterwheel respectively through the first condensate pump 13 and the second condensate pump 14；First condensate pump 13 input is provided with the 9th butterfly valve b9, and the first condensate pump 13 outfan is provided with the tenth butterfly valve b10；Second condensate pump 14 input is provided with the 11st butterfly valve b11, and the second condensate pump 14 outfan is provided with the 12nd butterfly valve b12；
The steam input of steam-operating water circulating pump 5 is connected with from plant area's main steam header road A by the first electric butterfly valve a1；The high-temperature water input of steam-operating water circulating pump 5 is connected with high-temperature water water return pipeline C by the 12nd electric butterfly valve a12；The high-temperature water outfan of steam-operating water circulating pump 5 is connected with high-temperature water backwater input channel J by the 6th butterfly valve a6；
High-temperature water water return pipeline C is connected with the high-temperature water input of electric water circulating pump 6 also by the 13rd electric butterfly valve a13, and the high-temperature water outfan of electric water circulating pump 6 is connected with high-temperature water backwater input channel J by the 14th electric butterfly valve a14；High-temperature water water return pipeline C head end has been arranged in parallel the tenth electric butterfly valve a10, filter the 7, the 11st electric butterfly valve a11 successively.
The steam input of the first heat exchanger 1 is connected with from plant area's main steam header road A by the 5th electric butterfly valve a5 and electric pressure-regulating valve 40.Electric pressure-regulating valve 40 pressure be set to consistent with the steam output end of hydrophobic development unit 4 described in.
High-temperature water backwater input channel J is connected with high-temperature water water supply line B by electric control valve 20.
The head end of high-temperature water water supply line B and the head end of high-temperature water water return pipeline C are provided with temperature measuring set；
Electric control valve 20 is controlled by the temperature measuring set of high-temperature water water supply line B head end；Steam-operating water circulating pump 5 and electric water circulating pump 6 are controlled by the temperature measuring set of high-temperature water water return pipeline C head end.
The thermal efficiency of application optimizes the operation method of steam-water heat exchanging initial station, including following operating mode:
Accidental conditions:
When the heat exchange calorimetric load of the first heat exchanger 1 can meet demand, open the first electric butterfly valve a1, the 15th electric butterfly valve a15；Close the second electric butterfly valve a2 and the five electric butterfly valve a5, from the thermal source superheated steam [P of plant area's main steam header road A output1, T1] drive steam-operating water circulating pump 5 to run, the steam [P that the steam turbine of steam-operating water circulating pump 5 is discharged2, T2] enter back into the first heat exchanger 1 by the 15th electric butterfly valve a15 and carry out heat exchange；The condensation water that first heat exchanger 1 produces reduces to P through steam trap 39 pressure3, it is drained to condensation water reflux line H；
When the heat exchange calorimetric load of the first heat exchanger 1 can not meet demand, open the 3rd electric butterfly valve a3 and the four electric butterfly valve a4, from the thermal source superheated steam [P of plant area's main steam header road A output1, T1] be directly entered the second heat exchanger the 2, the 3rd heat exchanger 3 and carry out heat exchange, the condensation water of generation enters hydrophobic development unit 4, and it is P that hydrophobic development unit 4 flashes off a part of pressure2Steam enter the first heat exchanger 1 and carry out heat exchange；The condensation water pressure that hydrophobic development unit 4 produces reduces to P3, then cause condensation water reflux line H；
Abnormal operation condition:
Abnormal operation condition one:
When the second heat exchanger 2 or the 3rd heat exchanger 3 need maintenance, and steam-operating water circulating pump 5 properly functioning time, open the first electric butterfly valve a1, the 6th electric butterfly valve a6, the 12nd electric butterfly valve a12, close the second electric butterfly valve a2, the 13rd electric butterfly valve a13, the 14th electric butterfly valve a14 and electric pressure-regulating valve 40, first heat exchanger the 1, the 3rd heat exchanger 3 or the second heat exchanger 2 are properly functioning, from the thermal source superheated steam [P of plant area's main steam header road A output1, T1] drive steam-operating water circulating pump 5 to run, steam [P discharged by steam-operating water circulating pump 52, T2] enter back into the first heat exchanger 1 and carry out heat exchange, the condensation water of generation reduces to P through steam trap 39 pressure3, cause condensation water reflux line H；
When the first heat exchanger 1 heat exchange calorimetric load can not meet demand, the 4th electric butterfly valve a4 or the 3rd electric butterfly valve a3 can be opened, from the thermal source superheated steam [P of plant area's main steam header road A output1, T1] it being directly entered the 3rd heat exchanger 3 or the second heat exchanger 2 carries out heat exchange, the condensation water of generation enters hydrophobic development unit 4, and it is P that hydrophobic development unit 4 flashes off a part of pressure2Steam, enters the first heat exchanger 1 and carries out heat exchange, and the condensation water pressure that hydrophobic development unit 4 produces reduces to P3, then cause condensation water reflux line H；
Abnormal operation condition two:
When the second heat exchanger 2 or the 3rd heat exchanger 3 need maintenance, and during steam-operating water circulating pump 5 irregular operating, need to run electric water circulating pump 6, close the first electric butterfly valve a1, the 6th electric butterfly valve a6, the 12nd electric butterfly valve a12, opening the second electric butterfly valve a2, the 13rd electric butterfly valve a13, the 14th electric butterfly valve a14, the first heat exchanger 1 is directly accessed the thermal source superheated steam [P from plant area's main steam header road A output without pressure regulation1, T1], make the first heat exchanger 1 can be properly functioning, the condensation water of generation reduces to P through steam trap 39 pressure4, cause condensation water reflux line H；
When the first heat exchanger 1 heat exchange calorimetric load can not meet demand, the 4th electric butterfly valve a4 or the 3rd electric butterfly valve a3 can be opened, from the thermal source superheated steam [P of plant area's main steam header road A output1, T1] it being directly entered the 3rd heat exchanger 3 or the second heat exchanger 2 carries out heat exchange, the condensation water of generation enters hydrophobic development unit 4, and hydrophobic development unit 4 flashes off a part of P2Steam, enters the first heat exchanger 1 and carries out heat exchange, and the condensation water pressure that hydrophobic development unit 4 produces reduces to P3, now in the first heat exchanger 1, pressure maintains P2, through steam trap blood pressure lowering condensation water pressure this maintain P3, it is therefore desirable to close the second electric butterfly valve a2, open the 5th electric butterfly valve a5, use electric pressure-regulating valve 40, make the steam pressure of entrance the first heat exchanger 1 maintain P2；The condensation water that first heat exchanger 1 and hydrophobic development unit 4 produce causes condensation water reflux line H；
Abnormal operation condition three: when the first heat exchanger 1 needs maintenance, close the first electric butterfly valve a1, the second electric butterfly valve a2, the 5th electric butterfly valve a5, the 6th electric butterfly valve a6, the 12nd electric butterfly valve a12, the 15th electric butterfly valve a15, stop using steam-operating water circulating pump 5, run electric water circulating pump 6, open the 3rd electric butterfly valve a3 and the four electric butterfly valve a4 separately or together, from the thermal source superheated steam [P of plant area's main steam header road A output1, T1] it is directly entered the second heat exchanger 2 or the 3rd heat exchanger 3 carries out heat exchange, change thermogenetic condensation water and enter hydrophobic development unit 4, cause condensation water reflux line H.
The thermal efficiency optimizes the operation method of steam-water heat exchanging initial station and also includes following heating temperature control method of water.
Accidental conditions:
From the high-temperature water backwater of high-temperature water water return pipeline C through the tenth electric butterfly valve a10, filter the 7, the 11st electric butterfly valve a11,12nd electric butterfly valve a12, enter steam-operating water circulating pump 5, then through the 6th electric butterfly valve a6, being respectively connected to first heat exchanger the 1, second heat exchanger the 2, the 3rd heat exchanger 3 and carry out heat exchange, then converge to high-temperature water water supply line B, the hot water pipe net for user's request side provides hot water；
When user's request side thermic load needs to reduce, by regulating electric control valve 20, high-temperature water water supply line B is mixed into the part backwater without heat exchange high-temperature water water return pipeline C output, reduces supply water temperature, make high temperature supply water temperature less than being designed for coolant-temperature gage T0；
Abnormal operation condition:
When steam-operating water circulating pump 5 needs repair and maintenance, close the 6th electric butterfly valve a6, the 12nd electric butterfly valve a12；Open the 13rd electric butterfly valve a13, the 14th electric butterfly valve a14 from the high-temperature water water return pipeline C of the user's request side backwater high-temperature water backwater exported through the tenth electric butterfly valve a10, filter the 7, the 11st electric butterfly valve a11,13rd electric butterfly valve a13, enter electric water circulating pump 6, then through the 14th electric butterfly valve a14, it is respectively connected to first heat exchanger the 1, second heat exchanger the 2, the 3rd heat exchanger 3 and carries out heat exchange, then converge to high-temperature water water supply line B, improve hot water for user's request side；
When user's request side thermic load needs to reduce, by regulating electric control valve 20, high-temperature water water supply line B is mixed into the part backwater without heat exchange high-temperature water water return pipeline C output, reduces supply water temperature, make high temperature supply water temperature less than being designed for coolant-temperature gage T0.In actual heat supplying process, also include the utilization to following system:
Condense water to water system:
Open the 9th butterfly valve b9, the tenth butterfly valve b10 and condensate pump 13 or open the 11st butterfly valve b11, the 12nd butterfly valve b11 and condensate pump 14, the condensation water from hydrophobic development unit 4 and steam trap 39 is caused Water Treatment workshop.
Water charging system:
1) accidental conditions: heat supply network moisturizing water source is tap water, opens solenoid valve 57,6th butterfly valve b6, the 7th butterfly valve b7, through water softener 8 chemical treatment, enter softening water tank 9, open the second butterfly valve b2, the 4th butterfly valve b4 and moisturizing water pump 11 or the 3rd butterfly valve b3, the 5th butterfly valve b5 and moisturizing water pump 12, fill into high-temperature tempering pipeline before circulation pump of heat-supply network entrance.
2) emergency water compensating operating mode: close the first moisturizing water pump 11；Second moisturizing water pump 12, cuts out electromagnetic valve 57, opens the first butterfly valve b1 and the 8th butterfly valve b8, without sofening treatment, directly fills into high-temperature tempering pipeline before circulation pump of heat-supply network entrance as emergency water compensating.
It addition, Zai Jie mono-road water pipe, opening first stop valve the 53, second stop valve 54, by chemicals dosing plant 10, add slow rotten agent toward heat network system, delaying pipe corrodes.
Cooling water system:
Open first gate valve the 55, second gate valve 56, utilize the built-in power set steam turbine of industry water cooling steam-operating water circulating pump 5.
It is 40MW that the present invention designs winter heating thermic load, and heat exchanger can adopt the vapour-water pipe shell-type exchangers of 3 heat exchange amount 18MW, parallel running.Circulation pump of heat-supply network adopts 2 × 100% horizontal double suction water circulating pump (flow 675m3/h, lift 65m) fortune is one standby, wherein 1 drives (power of motor 200kW, i.e. electric water circulating pump 6) for motor, and 1 is that Steam Turbine Driven (drives power 200kW, i.e. steam-operating water circulating pump 5), steam turbine steam inlet condition: 0.5MPa, 267 DEG C, turbine discharge parameter: 0.25MPa, 220 DEG C, steam turbine steam consumption: 16.5t/h.
The return water temperature of first heat exchange station is 70 DEG C, respectively enters water circulating pump through high-temperature water water return pipeline C, is also equipped with electronic automatic dirt-removing filtering device at high-temperature water water return pipeline C entrance, regularly removes heat supply network backwater impurity.For monitoring circling water flow rate, equipped with the measurement apparatus of circling water flow rate after filter.The heat supply network backwater of 70 DEG C enters the heat exchangers for district heating of operation after water circulating pump boosts, and the high-temperature-hot-water after heat exchangers for district heating heats up enters high-temperature water water supply line B.Equipped with flow measurement device in water main pipe, for monitoring the hot water flow being sent to heat supply network.Equipped with temperature measurement device on heat supply Jellyfish pipe, regulating the bypass heat supply network circling water flow rate of heat exchangers for district heating, control to be sent to the hot water temperature of heat supply network, the upper limit is 130 DEG C, i.e. T0≤130°。
When normal full load runs, 0.5MPa, 267 DEG C, 16.5t/h steam (i.e. P1Vapour source) be introduced into the power set steam turbine acting of horizontal double suction steam-operating water circulating pump (i.e. steam-operating water circulating pump 5) after, parameter is down to 0.25MPa, (i.e. P after 220 DEG C2Vapour source) steam entrance wherein the first heat exchanger heat exchange, adding heat is 11MW, adds flash distillation 0.25MPa saturated vapor (i.e. P3Vapour source), the first heat exchanger heat exchange amount steam consumption is 19.3t/h, and adding heat is 13MW；Second, third heat exchanger heat exchange steam consumption is respectively 20.7t/h, adds heat respectively for 13.5MW.
It should be understood that to those of ordinary skill in the art, the present invention can also making some changes or deformation under the premise not changing the principle of the invention, this also belongs to protection scope of the present invention.
Below do not elaborate and be prior art.
Claims (6)
1. the thermal efficiency optimizes steam-water heat exchanging initial station, it is characterised in that: include the first heat exchanger (1)；The steam input of described first heat exchanger (1) is connected with from plant area's main steam header road (A) by the second electric butterfly valve (a2)；The steam input of described first heat exchanger (1) is connected with the steam output end of steam-operating water circulating pump (5) also by the 15th electric butterfly valve (a15)；The steam input of described first heat exchanger (1) is also connected with the steam output end of hydrophobic development unit (4)；
The steam condensate outfan of described first heat exchanger (1) is connected with condensing water reflux line (H) by steam trap (39)；The high-temperature water input of described first heat exchanger (1) is connected with high-temperature water backwater input channel (J) by the 7th electric butterfly valve (a7)；The high-temperature water outfan of described first heat exchanger (1) is connected with high-temperature water water supply line (B)；
Described also it is connected with the steam input of the second heat exchanger (2), the 3rd heat exchanger (3) respectively through the 3rd electric butterfly valve (a3), the 4th electric butterfly valve (a4) from plant area's main steam header road (A)；Described high-temperature water water supply line (B) is also connected with the high-temperature water outfan of described second heat exchanger (2), described 3rd heat exchanger (3) respectively；The condensation water input of described hydrophobic development unit (4) is also connected with the steam condensate outfan of described second heat exchanger (2), described 3rd heat exchanger (3) respectively；The condensation water outfan of described hydrophobic development unit (4) is connected with described condensation water reflux line (H)；Described high-temperature water backwater input channel (J) is also connected with the high-temperature water input of described second heat exchanger (2), described 3rd heat exchanger (3) respectively through the 8th electric butterfly valve (a8), the 9th electric butterfly valve (a9)；
Described condensation water reflux line (H) is connected with pipeline (D) between boiler waterwheel respectively through the first condensate pump (13) and the second condensate pump (14)；Described first condensate pump (13) input is provided with the 9th butterfly valve (b9), and described first condensate pump (13) outfan is provided with the tenth butterfly valve (b10)；Described second condensate pump (14) input is provided with the 11st butterfly valve (b11), and described second condensate pump (14) outfan is provided with the 12nd butterfly valve (b12)；
The steam input of described steam-operating water circulating pump (5) is connected from plant area's main steam header road (A) with described by the first electric butterfly valve (a1)；The high-temperature water input of described steam-operating water circulating pump (5) is connected with high-temperature water water return pipeline (C) by the 12nd electric butterfly valve (a12)；The high-temperature water outfan of described steam-operating water circulating pump (5) is connected with described high-temperature water backwater input channel (J) by the 6th butterfly valve (a6)；
Described high-temperature water water return pipeline (C) is connected with the high-temperature water input of electric water circulating pump (6) also by the 13rd electric butterfly valve (a13), and the high-temperature water outfan of described electric water circulating pump (6) is connected with described high-temperature water backwater input channel (J) by the 14th electric butterfly valve (a14)；Described high-temperature water water return pipeline (C) head end has been arranged in parallel the tenth electric butterfly valve (a10), filter (7), the 11st electric butterfly valve (a11) successively.
2. the thermal efficiency according to claim 1 optimizes steam-water heat exchanging initial station, it is characterized in that: the steam input of described first heat exchanger (1) is connected from plant area's main steam header road (A) with described by the 5th electric butterfly valve (a5) and electric pressure-regulating valve (40), described electric pressure-regulating valve (40) pressure be set to consistent with the steam output end of described hydrophobic development unit (4) described in.
3. the thermal efficiency according to claim 2 optimizes steam-water heat exchanging initial station, it is characterised in that: described high-temperature water backwater input channel (J) is connected with described high-temperature water water supply line (B) by electric control valve (20).
4. the thermal efficiency according to claim 3 optimizes steam-water heat exchanging initial station, it is characterised in that: the head end of described high-temperature water water supply line (B) and the head end of described high-temperature water water return pipeline (C) are provided with temperature measuring set；
Described electric control valve (20) is controlled by the temperature measuring set of described high-temperature water water supply line (B) head end；Described steam-operating water circulating pump (5) and described electric water circulating pump (6) are controlled by the temperature measuring set of described high-temperature water water return pipeline (C) head end.
5. the application thermal efficiency described in claim 4 optimizes the operation method of steam-water heat exchanging initial station, it is characterised in that include following operating mode:
Accidental conditions:
When the heat exchange amount of the first heat exchanger (1) can meet thermal load demands, open the first electric butterfly valve (a1), the 15th electric butterfly valve (a15)；Close the second electric butterfly valve (a2) and the 5th electric butterfly valve (a5), the thermal source superheated steam [P exported from plant area's main steam header road (A)1, T1] drive steam-operating water circulating pump (5) to run, the steam [P that the steam turbine of steam-operating water circulating pump (5) is discharged2, T2] enter back into the first heat exchanger (1) by the 15th electric butterfly valve (a15) and carry out heat exchange；The condensation water that first heat exchanger (1) produces reduces to P through steam trap (39) pressure3, it is drained to condensation water reflux line (H)；
When the heat exchange calorimetric load of the first heat exchanger (1) can not meet demand, open the 3rd electric butterfly valve (a3) and the 4th electric butterfly valve (a4), the thermal source superheated steam [P exported from plant area's main steam header road (A)1, T1] be directly entered the second heat exchanger (2), the 3rd heat exchanger (3) carries out heat exchange, the condensation water of generation enters hydrophobic development unit (4), and it is P that hydrophobic development unit (4) flashes off a part of pressure2Steam enter the first heat exchanger (1) and carry out heat exchange；The condensation water pressure that hydrophobic development unit (4) produces reduces to P3, then cause condensation water reflux line (H)；
Abnormal operation condition:
Abnormal operation condition one:
When the second heat exchanger (2) or the 3rd heat exchanger (3) need maintenance, and steam-operating water circulating pump (5) properly functioning time, open the first electric butterfly valve (a1), 6th electric butterfly valve (a6), 12nd electric butterfly valve (a12), close the second electric butterfly valve (a2), 13rd electric butterfly valve (a13), 14th electric butterfly valve (a14) and the 5th electric butterfly valve (a5), first heat exchanger (1), 3rd heat exchanger (3) or the second heat exchanger (2) are properly functioning, thermal source superheated steam [the P exported from plant area's main steam header road (A)1, T1] driving the steam turbine operation of steam-operating water circulating pump (5), the steam turbine of steam-operating water circulating pump (5) discharges steam [P2, T2] enter back into the first heat exchanger (1) and carry out heat exchange, the condensation water of generation reduces to P through steam trap (39) pressure3, cause condensation water reflux line (H)；
When the first heat exchanger (1) heat exchange calorimetric load can not meet demand, the 4th electric butterfly valve (a4) or the 3rd electric butterfly valve (a3) can be opened, the thermal source superheated steam [P exported from plant area's main steam header road (A)1, T1] it being directly entered the 3rd heat exchanger (3) or the second heat exchanger (2) carries out heat exchange, the condensation water of generation enters hydrophobic development unit (4), and it is P that hydrophobic development unit (4) flashes off a part of pressure2Steam, enters the first heat exchanger (1) and carries out heat exchange, and the condensation water pressure that hydrophobic development unit (4) produces reduces to P3, then cause condensation water reflux line (H)；
Abnormal operation condition two:
When the second heat exchanger (2) or the 3rd heat exchanger (3) need maintenance, and during steam-operating water circulating pump (5) irregular operating, need to run electric water circulating pump (6), close the first electric butterfly valve (a1), the 6th electric butterfly valve (a6), the 12nd electric butterfly valve (a12), opening the second electric butterfly valve (a2), the 13rd electric butterfly valve (a13), the 14th electric butterfly valve (a14), the first heat exchanger (1) is directly accessed the thermal source superheated steam [P exported from plant area's main steam header road (A) without pressure regulation1, T1], make the first heat exchanger (1) can be properly functioning, the condensation water of generation reduces to P through steam trap (39) pressure4, cause condensation water reflux line (H)；
When the first heat exchanger (1) heat exchange calorimetric load can not meet demand, the 4th electric butterfly valve (a4) or the 3rd electric butterfly valve (a3) can be opened, the thermal source superheated steam [P exported from plant area's main steam header road (A)1, T1] it being directly entered the 3rd heat exchanger (3) or the second heat exchanger (2) carries out heat exchange, the condensation water of generation enters hydrophobic development unit (4), and hydrophobic development unit (4) flashes off a part of P2Steam, enters the first heat exchanger (1) and carries out heat exchange, and the condensation water pressure that hydrophobic development unit (4) produces reduces to P3, now the first heat exchanger (1) interior pressure maintains P2, through steam trap blood pressure lowering condensation water pressure this maintain P3, it is therefore desirable to close the second electric butterfly valve (a2), open the 5th electric butterfly valve (a5), use electric pressure-regulating valve (40), make the steam pressure of entrance the first heat exchanger (1) maintain P2；The condensation water that first heat exchanger (1) and hydrophobic development unit (4) produce causes condensation water reflux line (H)；
Abnormal operation condition three: when the first heat exchanger (1) needs maintenance, close the first electric butterfly valve (a1), the second electric butterfly valve (a2), the 5th electric butterfly valve (a5), the 6th electric butterfly valve (a6), the 12nd electric butterfly valve (a12), the 15th electric butterfly valve (a15), stop using steam-operating water circulating pump (5), run electric water circulating pump (6), open the 3rd electric butterfly valve (a3) and the 4th electric butterfly valve (a4), the thermal source superheated steam [P exported from plant area's main steam header road (A) separately or together1, T1] it is directly entered the second heat exchanger (2) or the 3rd heat exchanger (3) carries out heat exchange, change thermogenetic condensation water and enter hydrophobic development unit (4), cause condensation water reflux line (H).
6. the thermal efficiency according to claim 5 optimizes the operation method of steam-water heat exchanging initial station, it is characterised in that include following operating mode:
Accidental conditions:
From the high-temperature water backwater of high-temperature water water return pipeline (C) through the tenth electric butterfly valve (a10), filter (7), the 11st electric butterfly valve (a11), 12nd electric butterfly valve (a12), enter steam-operating water circulating pump (5), then through the 6th electric butterfly valve (a6), be respectively connected to the first heat exchanger (1), the second heat exchanger (2), the 3rd heat exchanger (3) carry out heat exchange, converging to high-temperature water water supply line (B), the hot water pipe net for user's request side provides hot water again；
When user's request side thermic load needs to reduce, by regulating electric control valve (20), high-temperature water water supply line (B) is mixed into the backwater that a part exports without heat exchange high-temperature water water return pipeline (C), reduce supply water temperature, make high temperature supply water temperature less than being designed for coolant-temperature gage T0；
Abnormal operation condition:
When steam-operating water circulating pump (5) needs repair and maintenance, close the 6th electric butterfly valve (a6), the 12nd electric butterfly valve (a12)；Open the 13rd electric butterfly valve (a13), the backwater high-temperature water backwater that 14th electric butterfly valve (a14) exports from the high-temperature water water return pipeline (C) of user's request side is through the tenth electric butterfly valve (a10), filter (7), 11st electric butterfly valve (a11), 13rd electric butterfly valve (a13), enter electric water circulating pump (6), then through the 14th electric butterfly valve (a14), it is respectively connected to the first heat exchanger (1), second heat exchanger (2), 3rd heat exchanger (3) carries out heat exchange, converge again to high-temperature water water supply line (B), hot water is improved for user's request side；
When user's request side thermic load needs to reduce, by regulating electric control valve (20), high-temperature water water supply line (B) is mixed into the backwater that a part exports without heat exchange high-temperature water water return pipeline (C), reduce supply water temperature, make high temperature supply water temperature less than being designed for coolant-temperature gage T0。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109564008A (en) * | 2016-07-26 | 2019-04-02 | 株式会社能率 | Heat hot water supply apparatus |
| CN112906190A (en) * | 2021-01-19 | 2021-06-04 | 国网陕西省电力公司电力科学研究院 | Water supply system-related virtual power plant optimal scheduling method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096383Y (en) * | 2007-10-08 | 2008-08-06 | 齐健 | Full-automatic energy-saving device fully utilizing heat exchange stations condensate water thermal value |
| CN102278784A (en) * | 2011-05-13 | 2011-12-14 | 新疆西部热力集团有限公司 | Distributed direct-mixing heat supply system |
| CN203757817U (en) * | 2014-03-18 | 2014-08-06 | 中广核工程有限公司 | Heat exchange station system |
| EP3001111A1 (en) * | 2014-02-28 | 2016-03-30 | Tsinghua University | Electric power peak-shaving and combined heat and power waste heat recovery device and operation method thereof |
| CN205593029U (en) * | 2016-04-27 | 2016-09-21 | 中国电力工程顾问集团中南电力设计院有限公司 | Soda heat transfer initial station is optimized to thermal efficiency |
-
2016
- 2016-04-27 CN CN201610267835.2A patent/CN105757759B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096383Y (en) * | 2007-10-08 | 2008-08-06 | 齐健 | Full-automatic energy-saving device fully utilizing heat exchange stations condensate water thermal value |
| CN102278784A (en) * | 2011-05-13 | 2011-12-14 | 新疆西部热力集团有限公司 | Distributed direct-mixing heat supply system |
| EP3001111A1 (en) * | 2014-02-28 | 2016-03-30 | Tsinghua University | Electric power peak-shaving and combined heat and power waste heat recovery device and operation method thereof |
| CN203757817U (en) * | 2014-03-18 | 2014-08-06 | 中广核工程有限公司 | Heat exchange station system |
| CN205593029U (en) * | 2016-04-27 | 2016-09-21 | 中国电力工程顾问集团中南电力设计院有限公司 | Soda heat transfer initial station is optimized to thermal efficiency |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109564008A (en) * | 2016-07-26 | 2019-04-02 | 株式会社能率 | Heat hot water supply apparatus |
| CN112906190A (en) * | 2021-01-19 | 2021-06-04 | 国网陕西省电力公司电力科学研究院 | Water supply system-related virtual power plant optimal scheduling method and system |
| CN112906190B (en) * | 2021-01-19 | 2024-01-16 | 国网陕西省电力公司电力科学研究院 | Virtual power plant optimal scheduling method and system considering water supply system |
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