CN105757759B - The thermal efficiency optimizes steam-water heat exchanging initial station and its operation method - Google Patents
The thermal efficiency optimizes steam-water heat exchanging initial station and its operation method Download PDFInfo
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- CN105757759B CN105757759B CN201610267835.2A CN201610267835A CN105757759B CN 105757759 B CN105757759 B CN 105757759B CN 201610267835 A CN201610267835 A CN 201610267835A CN 105757759 B CN105757759 B CN 105757759B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 314
- 238000000034 method Methods 0.000 title claims abstract description 14
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 62
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 53
- 238000011161 development Methods 0.000 claims abstract description 51
- 238000005457 optimization Methods 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 9
- 238000013461 design Methods 0.000 claims abstract description 6
- 238000010992 reflux Methods 0.000 claims description 28
- 239000008400 supply water Substances 0.000 claims description 20
- 230000002159 abnormal effect Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 230000003020 moisturizing effect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
- 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
-
- 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
Abstract
The invention discloses a kind of thermal efficiency optimization steam-water heat exchanging initial station and its operation methods.First heat exchanger heat source has three parts, and wherein Part III is that the condensation water out of second, third heat exchanger of steam-water heat exchanging initial station sets a hydrophobic development unit；The high pressure condensed water after high steam condensing heat-exchange is collected using hydrophobic development unit, the steam that recycling double evaporation-cooling generates, carry out secondary heat exchange into first heat exchanger, make full use of the energy.The present invention controls the electric control valve of high-temperature water water return pipeline by the temperature measuring set of high-temperature water water supply line head end.Design in this way, according to the variation of the steam-water heat exchanging initial station user demand heat exchange amount temperature that adjustment high temperature supplies water in time, the present invention only sets pressure-regulating valve in the bypass duct of the spare heating steam of first heat exchanger, three heat exchanger remaining steam pipeline (trace)s do not set pressure regulator valve, ensure that heat exchanger inlets steam drop is small, heat transfer temperature difference is big, and then ensures only to need smaller heat exchanger heat exchange area.
Description
Technical field
The present invention relates to heating system, a kind of thermal efficiency optimization steam-water heat exchanging initial station and its operation method are referred in particular to.
Background technology
Steam-water heat exchanging initial station is the core component of resident's heating system.Steam-water heat exchanging initial station is usually and thermal power plant
Matching setting is utilized the steam of steam turbine of thermal power plant power generation acting again.The steam phase ratio that thermal power plant's power generation cycle goes out
Heating demands pressure, temperature is higher, directly applies to the heat exchanger of steam-water heat exchanging initial station, limited efficacy, and be unfavorable for equipment
Operation steady in a long-term, simultaneously because the thermic load of resident's heating demands, there are certain fluctuation, present steam-water heat exchanging is first
It stands and there is a problem that the thermal efficiency is low in face of complicated heat demand.
For convenience of description, by taking a certain purpose winter thermic load total amount is 40MW as an example.
(1) conventional vapour-water first heat exchange station, circulation pump of heat-supply network generally use 2 × 100% electric water circulating pumps, one
Operation, one spare, and motor uses variable frequency adjustment；Heat exchanger generally uses 2 × 75% thermic loads, heat exchange amount 30MW.When with
When family side thermic load is less than 30MW, an only heat exchanger operation；When user side thermic load in 30MW at full capacity
When 40MW, 50% thermic load should be respectively undertaken by two heat exchangers.Become hour in user's thermic load, can be handed over by adjusting heat
Steam control valve adjusts the quantity of steam into heat exchanger at exchanger inlet, and high temperature supply water temperature is made to maintain required level.
There are two basic problems for this system：1., water circulating pump use powered version, operating cost is bigger, and motor
Frequency converter initial cost is larger；2., when user's thermic load be far below 30MW when, from heat load adjustment in terms of, underaction facilitate.
(2) second of system, circulation pump of heat-supply network use 2 × 100% water circulating pumps, wherein one is Steam Turbine Driven,
Usually normal operation, 1 drives for motor, as spare；Heat exchanger still uses 2 × 75% thermic loads, heat exchange amount 30MW.
Under nominal situation, heat source superheated steam drives the low-quality steam after steam-operating water circulating pump to access a wherein heat exchanger (first
Heat exchanger) it exchanges heat, which undertakes sub-fraction thermic load, about 25%, in addition a heat exchanger (the second heat exchanger)
Heat source superheated steam is then directly connect, most thermic load, about 75% are undertaken.
There are a basic problems for this system：The purpose of system setting steam-operating water circulating pump is reduction operating cost,
Nominal situation longtime running needs to run two heat exchangers simultaneously when user's thermic load is needed more than 30% maximum heating load,
Run time is relatively long, and the second heat exchanger continues oepration at full load, and equipment life will be affected, and the operation of the system
It adjusts not reasonable.
Invention content
The first object of the present invention is to overcome the existing steam-water heat exchanging initial station thermal efficiency low and provide a kind of thermal efficiency
Optimize steam-water heat exchanging initial station.The second object of the present invention is to provide the operation using above-mentioned thermal efficiency optimization steam-water heat exchanging initial station
Method.
The first object of the present invention is realized by following technical solution：
The thermal efficiency optimizes steam-water heat exchanging initial station, including first heat exchanger；The steam input terminal of the first heat exchanger
It is connected with from plant area's main steam header road by the second electric butterfly valve；The steam input terminal of the first heat exchanger also passes through
15 electric butterfly valves are connected with the steam output end of steam-operating water circulating pump；The steam input terminal of the first heat exchanger also with
The steam output end of hydrophobic development unit is connected；
The steam condensate output end of the first heat exchanger is connected by steam trap with condensed water reflux line；Institute
The high-temperature water input terminal for stating first heat exchanger is connected by the 7th electric butterfly valve with high-temperature water return water input channel；Described
The high-temperature water output end of one heat exchanger is connected with high-temperature water water supply line；
It is described also to pass through third electric butterfly valve, the 4th electric butterfly valve and the second heat exchange respectively from plant area's main steam header road
Device, third heat exchanger steam input terminal be connected；The high-temperature water water supply line also respectively with the second heat exchanger,
The high-temperature water output end of the third heat exchanger is connected；The condensed water input terminal of the hydrophobic development unit also respectively with it is described
Second heat exchanger, the third heat exchanger steam condensate output end be connected；The condensed water of the hydrophobic development unit
Output end is connected with the condensed water reflux line；The high-temperature water return water input channel also passes through the 8th electronic butterfly respectively
Valve, the 9th electric butterfly valve are connected with the high-temperature water input terminal of the second heat exchanger, the third heat exchanger；
The condensed water reflux line is respectively by the first condensate pump and the second condensate pump and between boiler waterwheel
Pipeline is connected；The first condensate pump input terminal is provided with the 9th butterfly valve, and the first condensate pump output end is provided with
Tenth butterfly valve；The second condensate pump input terminal is provided with the 11st butterfly valve, and the second condensate pump output end is provided with
12nd butterfly valve；
The steam input terminal of the steam-operating water circulating pump is by the first electric butterfly valve with described from plant area's main steam header road phase
Connection；The high-temperature water input terminal of the steam-operating water circulating pump is connected by the 12nd electric butterfly valve with high-temperature water water return pipeline；
The high-temperature water output end of the steam-operating water circulating pump is connected by the 6th butterfly valve with the high-temperature water return water input channel；
The high-temperature water water return pipeline also passes through the high-temperature water input terminal phase of the 13rd electric butterfly valve and electric water circulating pump
Connection, the high-temperature water output end of the electric water circulating pump pass through the 14th electric butterfly valve and the high-temperature water return water input channel
It is connected；The high-temperature water water return pipeline head end has been arranged in parallel the tenth electric butterfly valve, filter, the 11st electronic butterfly successively
Valve.
The steam input terminal of the first heat exchanger by the 5th electric butterfly valve and electric pressure-regulating valve with it is described from factory
Area main steam header road is connected.The electric pressure-regulating valve pressure is set as institute consistent with the steam output end of the hydrophobic development unit
It states.
The high-temperature water return water input channel is connected by electric control valve with the high-temperature water water supply line.
The head end of the head end of the high-temperature water water supply line and the high-temperature water water return pipeline is both provided with temperature measurement
Instrument；
The electric control valve is controlled by the temperature measuring set of the high-temperature water water supply line head end；The steam-operating recirculated water
Pump and the electric water circulating pump are controlled by the temperature measuring set of the high-temperature water water return pipeline head end.
The second object of the present invention is realized by following technical solution：
The operation method that the thermal efficiency optimizes steam-water heat exchanging initial station includes following operating mode：
Accidental conditions：
When the heat exchange amount thermic load of first heat exchanger can be with meet demand, the first electric butterfly valve, the 15th electricity are opened
Dynamic butterfly valve；The second electric butterfly valve and the 5th electric butterfly valve are closed, the heat source superheated steam exported from plant area's main steam header road【P1,
T1】Drive the operation of steam-operating water circulating pump, the steam of the steam turbine discharge of steam-operating water circulating pump【P2, T2】Pass through the 15th electronic butterfly
Valve enters back into first heat exchanger and exchanges heat；The condensed water that first heat exchanger generates is reduced to P through steam trap pressure3, drainage
To condensed water reflux line；
When the heat exchange amount thermic load of first heat exchanger is unable to meet demand, third electric butterfly valve and the 4th electronic is opened
Butterfly valve, the heat source superheated steam exported from plant area's main steam header road【P1, T1】It is directly entered second heat exchanger, third heat exchange
Device exchanges heat, and the condensed water of generation enters hydrophobic development unit, and it is P that hydrophobic development unit, which flashes off a part of pressure,2Steam into
Enter first heat exchanger to exchange heat；The condensed water pressure that hydrophobic development unit generates is reduced to P3, then lead to condensed water reflux line；
Abnormal operation condition：
Abnormal operation condition one：
When second heat exchanger or third heat exchanger need to overhaul, and when steam-operating water circulating pump normal operation, the is opened
One 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, third heat exchanger or second heat exchanger normal operation are steamed from plant area
The heat source superheated steam of vapour main pipeline output【P1, T1】Drive the operation of steam-operating water circulating pump, steam-operating water circulating pump that steam is discharged【P2,
T2】It enters back into first heat exchanger to exchange heat, the condensed water of generation is reduced to P through steam trap pressure3, lead to condensed water return duct
Road；
When first heat exchanger heat exchange amount thermic load is unable to meet demand, the 4th electric butterfly valve or third electricity can be opened
Dynamic butterfly valve, the heat source superheated steam exported from plant area's main steam header road【P1, T1】It is directly entered third heat exchanger or the second heat is handed over
Parallel operation exchanges heat, and the condensed water of generation enters hydrophobic development unit, and it is P that hydrophobic development unit, which flashes off a part of pressure,2Steam, into
Enter first heat exchanger to exchange heat, the condensed water pressure that hydrophobic development unit generates is reduced to P3, then lead to condensed water reflux line；
Abnormal operation condition two：
When second heat exchanger or third heat exchanger need to overhaul, and when steam-operating water circulating pump irregular operating, need
Electric water circulating pump is run, the first electric butterfly valve, the 6th electric butterfly valve, the 12nd electric butterfly valve are closed, opens the second electronic butterfly
Valve, the 13rd electric butterfly valve, the 14th electric butterfly valve, first heat exchanger are directly accessed without pressure regulation from plant area's main steam header
The heat source superheated steam of road output【P1, T1】, enable first heat exchanger normal operation, the condensed water of generation is through steam trap pressure
Power is reduced to P4, lead to condensed water reflux line；
When first heat exchanger heat exchange amount thermic load is unable to meet demand, the 4th electric butterfly valve or third electricity can be opened
Dynamic butterfly valve, the heat source superheated steam exported from plant area's main steam header road【P1, T1】It is directly entered third heat exchanger or the second heat is handed over
Parallel operation exchanges heat, and the condensed water of generation enters hydrophobic development unit, and hydrophobic development unit flashes off a part of P2Steam, into first
Heat exchanger exchanges heat, and the condensed water pressure that hydrophobic development unit generates is reduced to P3, pressure maintains in first heat exchanger at this time
In P2, through steam trap decompression condensation water pressure this maintain P3, it is therefore desirable to the second electric butterfly valve is closed, it is electronic to open the 5th
Butterfly valve makes the steam pressure into first heat exchanger maintain P using electric pressure-regulating valve2；First heat exchanger and hydrophobic expansion
The condensed water that container generates leads to condensed water reflux line；
Abnormal operation condition three：When first heat exchanger needs to overhaul, the first electric butterfly valve, the second electronic butterfly are closed
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 recirculated water
Pump runs electric water circulating pump, third electric butterfly valve and the 4th electric butterfly valve is opened separately or together, from plant area's main steam header
The heat source superheated steam of road output【P1, T1】It is directly entered second heat exchanger or third heat exchanger exchanges heat, heat exchange generates
Condensed water enter hydrophobic development unit, lead to condensed water reflux line.
The operation method further includes following type water temperature adjustment method：
Accidental conditions：
High-temperature water return water from high-temperature water water return pipeline is through the tenth electric butterfly valve, filter, the 11st electric butterfly valve, and
12 electric butterfly valves into steam-operating water circulating pump, then through the 6th electric butterfly valve, are respectively connected to first heat exchanger, the second heat friendship
Parallel operation, third heat exchanger exchange heat, then converge to high-temperature water water supply line, and the hot water pipe net for user demand side provides heat
Water；
When user demand side, thermic load needs to reduce, by adjusting electric control valve, mixed in high-temperature water water supply line
Enter a part without the return water of heat exchange high-temperature water water return pipeline output, reduce supply water temperature, so that high temperature supply water temperature is no more than and set
Count supply water temperature T0；
Abnormal operation condition：
When steam-operating water circulating pump needs repair and maintenance, the 6th electric butterfly valve, the 12nd electric butterfly valve are closed；Open the tenth
The return water high-temperature water return water warp of the high-temperature water water return pipeline output of three electric butterfly valves, the 14th electric butterfly valve from user demand side
Tenth electric butterfly valve, filter, the 11st electric butterfly valve, the 13rd electric butterfly valve, into electric water circulating pump, then through the 14th
Electric butterfly valve is respectively connected to first heat exchanger, second heat exchanger, third heat exchanger and exchanges heat, then converges to high-temperature water
Water supply line improves hot water for user demand side；
When user demand side, thermic load needs to reduce, by adjusting electric control valve, mixed in high-temperature water water supply line
Enter a part without the return water of heat exchange high-temperature water water return pipeline output, reduce supply water temperature, so that high temperature supply water temperature is no more than and set
Count supply water temperature T0。
Has following advantage in the present invention:Water circulating pump uses 2 × 100% horizontal double suction water circulating pumps, and a fortune one is standby,
In 1 for motor drive (i.e. electric water pump), 1 be Steam Turbine Driven (i.e. steam-operating water pump).Under nominal situation, operation steam-operating is followed
Ring water pump can save electric energy.
The condensation water out of second, third heat exchanger sets a hydrophobic development unit.High pressure is collected using hydrophobic development unit
The steam that high pressure condensed water, recycling double evaporation-cooling after vapor condensation heat-exchange generate, secondary change is carried out into first heat exchanger
Heat makes full use of the energy.
First heat exchanger heat source has 3 parts：1., be directly connected to 0.5MPa, 267 DEG C of superheated steams are as standby heat source；
2., connect steam turbine outlet vapor (0.25MPa, 220 DEG C) and be used as nominal situation heat source, 3., to connect third heat exchanger and third hot
After exchanger condensed water enters hydrophobic development unit, 0.25MPa saturated vapors are flashed.It can ensure the reasonable utilization of energy, save
The energy, but heat exchanger can flexibly switch when can guarantee steam-operating failure of pump, therrmodynamic system normal operation.It is 3. flashed when using
0.25MPa saturated vapors and heating load cannot be satisfied when requiring, and adjust electric pressure-regulating valve and make the vapour source being directly connected to and sudden strain of a muscle
It is consistent to steam steam pressure, to supplement steam.
Electric control valve is added in high-temperature water return water main pipe, recirculated water is meeting the same of supply water temperature by mixed water mode
When, reasonable distribution flow is lowered into the quantity of circulating water of heat exchanger, and then reduces the pressure loss for flowing through heat exchanger.
Only set pressure-regulating valve in the bypass duct of the spare heating steam of first heat exchanger, three heat exchangers remaining
Steam pipeline (trace) does not set pressure regulator valve, ensures that heat exchanger inlets steam drop is small, and heat transfer temperature difference is big, and then ensures smaller heat
Exchanger heat exchange area.
Description of the drawings
Fig. 1 is the overall structure 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：First heat exchanger 1；Second heat exchanger 2；Third heat exchanger 3；Hydrophobic development unit 4；Steam-operating recirculated water
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 mends
Water water pump 12；First condensate pump 13；Second condensate pump 14；Electric control valve 20；Steam trap 39；Electric pressure-regulating valve 40；The
One shut-off valve 53；Second shut-off valve 54；First gate valve 55；Second gate valve 56；Solenoid 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；Condensed water reflux line H；High-temperature water return water input channel J；The electric butterfly valve of first electric butterfly valve~the 15th
A1~a15；Butterfly valve b1~the b12 of first butterfly valve~the 12nd.
Specific implementation mode
Below in conjunction with drawings and examples, the present invention is described in further detail, but the embodiment should not be construed
Limitation of the present invention, it is only for example, while by illustrating that advantages of the present invention will become clearer and be readily appreciated that.
The thermal efficiency optimizes steam-water heat exchanging initial station, including first heat exchanger 1；The steam input terminal of first heat exchanger 1 is logical
The second electric butterfly valve a2 is crossed with from plant area's main steam header road A to be connected；The steam input terminal of first heat exchanger 1 also passes through the tenth
Five electric butterfly valve a15 are connected with the steam output end of steam-operating water circulating pump 5；The steam input terminal of first heat exchanger 1 also with
The steam output end of hydrophobic development unit 4 is connected；
The steam condensate output end of first heat exchanger 1 is connected by steam trap 39 with condensed water reflux line H；The
The high-temperature water input terminal of one heat exchanger 1 is connected by the 7th electric butterfly valve a7 with high-temperature water return water input channel J；First heat
The high-temperature water output end of exchanger 1 is connected with high-temperature water water supply line B；
Also pass through third electric butterfly valve a3, the 4th electric butterfly valve a4 and the second heat exchange respectively from plant area's main steam header road A
Device 2, third heat exchanger 3 steam input terminal be connected；High-temperature water water supply line B also respectively with second heat exchanger 2, third
The high-temperature water output end of heat exchanger 3 is connected；The condensed water input terminal of hydrophobic development unit 4 also respectively with second heat exchanger 2,
The steam condensate output end of third heat exchanger 3 is connected；The condensed water output end of hydrophobic development unit 4 and condensed water return duct
Road H is connected；High-temperature water return water input channel J also passes through the 8th electric butterfly valve a8, the 9th electric butterfly valve a9 and the second heat respectively
Exchanger 2, third heat exchanger 3 high-temperature water input terminal be connected；
Condensed water reflux line H is respectively by the first condensate pump 13 and the second condensate pump 14 and between boiler waterwheel
Pipeline D is connected；First condensate pump, 13 input terminal is provided with the 9th butterfly valve b9, and 13 output end of the first condensate pump is provided with
Ten butterfly valve b10；Second condensate pump, 14 input terminal is provided with the 11st butterfly valve b11, and 14 output end of the second condensate pump is provided with
12nd butterfly valve b12；
The steam input terminal of steam-operating water circulating pump 5 is connected by the first electric butterfly valve a1 with from plant area's main steam header road A；
The high-temperature water input terminal of steam-operating water circulating pump 5 is connected by the 12nd electric butterfly valve a12 with high-temperature water water return pipeline C；Steam-operating
The high-temperature water output end of water circulating pump 5 is connected by the 6th butterfly valve a6 with high-temperature water return water input channel J；
High-temperature water water return pipeline C also passes through the high-temperature water input terminal phase of the 13rd electric butterfly valve a13 and electric water circulating pump 6
Connection, the high-temperature water output end of electric water circulating pump 6 pass through the 14th electric butterfly valve a14 and high-temperature water return water input channel J phases
Connection；High-temperature water water return pipeline C head ends have been arranged in parallel the tenth electric butterfly valve a10, filter 7, the 11st electric butterfly valve successively
a11。
The steam input terminal of first heat exchanger 1 is steamed by the 5th electric butterfly valve a5 and electric pressure-regulating valve 40 with from plant area
Vapour main pipeline A is connected.40 pressure of electric pressure-regulating valve is set as consistent with the steam output end of hydrophobic development unit 4 described.
High-temperature water return water input channel J is connected by electric control valve 20 with high-temperature water water supply line B.
The head end of high-temperature water water supply line B and the head end of high-temperature water water return pipeline C are both 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 ends；Steam-operating water circulating pump 5 and electronic
Water circulating pump 6 is controlled by the temperature measuring set of high-temperature water water return pipeline C head ends.
The operation method of the thermal efficiency optimization steam-water heat exchanging initial station of application, including following operating mode：
Accidental conditions：
When the heat exchange amount thermic load of first heat exchanger 1 can be with meet demand, the first electric butterfly valve a1, the 15th are opened
Electric butterfly valve a15；The second electric butterfly valve a2 and the 5th electric butterfly valve a5 is closed, from the heat source mistake of plant area's main steam header road A outputs
Hot steam【P1, T1】Steam-operating water circulating pump 5 is driven to run, the steam of the steam turbine discharge of steam-operating water circulating pump 5【P2, T2】Pass through
15th electric butterfly valve a15 enters back into first heat exchanger 1 and exchanges heat；The condensed water that first heat exchanger 1 generates is through hydrophobic
39 pressure of device is reduced to P3, it is drained to condensed water reflux line H；
When the heat exchange amount thermic load of first heat exchanger 1 is unable to meet demand, third electric butterfly valve a3 and the 4th is opened
Electric butterfly valve a4, from the heat source superheated steam of plant area's main steam header road A outputs【P1, T1】It is directly entered second heat exchanger 2,
Three heat exchangers 3 exchange heat, and the condensed water of generation enters hydrophobic development unit 4, and hydrophobic development unit 4 flashes off a part of pressure and is
P2Steam enter first heat exchanger 1 and exchange heat；The condensed water pressure that hydrophobic development unit 4 generates is reduced to P3, then lead to condensation
Water reflux line H；
Abnormal operation condition：
Abnormal operation condition one：
When second heat exchanger 2 or third heat exchanger 3 need to overhaul, and when steam-operating 5 normal operation of water circulating pump, open
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 electronic
Butterfly valve a13, the 14th electric butterfly valve a14 and electric pressure-regulating valve 40, first heat exchanger 1, third heat exchanger 3 or the second heat are handed over
2 normal operation of parallel operation, from the heat source superheated steam of plant area's main steam header road A outputs【P1, T1】Steam-operating water circulating pump 5 is driven to run,
Steam is discharged in steam-operating water circulating pump 5【P2, T2】It enters back into first heat exchanger 1 to exchange heat, the condensed water of generation is through steam trap 39
Pressure is reduced to P3, lead to condensed water reflux line H；
When 1 heat exchange amount thermic load of first heat exchanger is unable to meet demand, the 4th electric butterfly valve a4 or can be opened
Three electric butterfly valve a3, from the heat source superheated steam of plant area's main steam header road A outputs【P1, T1】Be directly entered third heat exchanger 3 or
Second heat exchanger 2 exchanges heat, and the condensed water of generation enters hydrophobic development unit 4, and hydrophobic development unit 4 flashes off a part of pressure
For P2Steam exchanges heat into first heat exchanger 1, and the condensed water pressure that hydrophobic development unit 4 generates is reduced to P3, then lead to solidifying
Bear water reflux line H；
Abnormal operation condition two：
When second heat exchanger 2 or third heat exchanger 3 need to overhaul, and when steam-operating 5 irregular operating of water circulating pump, need
Electric water circulating pump 6 is run, the first electric butterfly valve a1, the 6th electric butterfly valve a6, the 12nd electric butterfly valve a12 are closed, is opened
Second electric butterfly valve a2, the 13rd electric butterfly valve a13, the 14th electric butterfly valve a14, first heat exchanger 1 be directly accessed without
The heat source superheated steam from the road A outputs of plant area's main steam header of pressure regulation【P1, T1】, enable 1 normal operation of first heat exchanger,
The condensed water of generation is reduced to P through 39 pressure of steam trap4, lead to condensed water reflux line H；
When 1 heat exchange amount thermic load of first heat exchanger is unable to meet demand, the 4th electric butterfly valve a4 or can be opened
Three electric butterfly valve a3, from the heat source superheated steam of plant area's main steam header road A outputs【P1, T1】Be directly entered third heat exchanger 3 or
Second heat exchanger 2 exchanges heat, and the condensed water of generation enters hydrophobic development unit 4, and hydrophobic development unit 4 flashes off a part of P2It steams
Vapour exchanges heat into first heat exchanger 1, and the condensed water pressure that hydrophobic development unit 4 generates is reduced to P3, the first heat exchange at this time
Pressure maintains P in device 12, through steam trap decompression condensation water pressure this maintain P3, it is therefore desirable to close the second electric butterfly valve
A2 opens the 5th electric butterfly valve a5, using electric pressure-regulating valve 40, the steam pressure into first heat exchanger 1 is made to maintain P2；
The condensed water that first heat exchanger 1 and hydrophobic development unit 4 generate leads to condensed water reflux line H；
Abnormal operation condition three：When first heat exchanger 1 needs to overhaul, the first electric butterfly valve a1, second electronic is closed
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, electric water circulating pump 6 is run, it is electronic to open third electric butterfly valve a3 and the 4th separately or together
Butterfly valve a4, from the heat source superheated steam of plant area's main steam header road A outputs【P1, T1】It is directly entered second heat exchanger 2 or third heat
Exchanger 3 exchanges heat, and changes thermogenetic condensed water and enters hydrophobic development unit 4, leads to condensed water reflux line H.
The operation method of thermal efficiency optimization steam-water heat exchanging initial station further includes following heating temperature control method of water.
Accidental conditions：
High-temperature water return water from high-temperature water water return pipeline C is through the tenth electric butterfly valve a10, filter 7, the 11st electronic butterfly
Valve a11, the 12nd electric butterfly valve a12 into steam-operating water circulating pump 5, then through the 6th electric butterfly valve a6, are respectively connected to the first heat and hand over
Parallel operation 1, second heat exchanger 2, third heat exchanger 3 exchange heat, then converge to high-temperature water water supply line B, are user demand side
Hot water pipe net provide hot water；
When user demand side, thermic load needs to reduce, by adjusting electric control valve 20, in high-temperature water water supply line B
A part is mixed into without the return water of heat exchange high-temperature water water return pipeline C outputs, supply water temperature is reduced, high temperature supply water temperature is made to be no more than
Design supply water temperature T0；
Abnormal operation condition：
When steam-operating water circulating pump 5 needs repair and maintenance, the 6th electric butterfly valve a6, the 12nd electric butterfly valve a12 are closed；It opens
Open returning for the high-temperature water water return pipeline C outputs of the 13rd electric butterfly valve a13, the 14th electric butterfly valve a14 from user demand side
Water high-temperature water return water is through the tenth electric butterfly valve a10, filter 7, the 11st electric butterfly valve a11, the 13rd electric butterfly valve a13, into
Enter electric water circulating pump 6, then through the 14th electric butterfly valve a14, is respectively connected to first heat exchanger 1, second heat exchanger 2,
Three heat exchangers 3 exchange heat, then converge to high-temperature water water supply line B, and hot water is improved for user demand side；
When user demand side, thermic load needs to reduce, by adjusting electric control valve 20, in high-temperature water water supply line B
A part is mixed into without the return water of heat exchange high-temperature water water return pipeline C outputs, supply water temperature is reduced, high temperature supply water temperature is made to be no more than
Design supply water temperature T0.Further include the utilization to following system in practical heat supplying process：
Condense water to water system：
It opens the 9th butterfly valve b9, the tenth butterfly valve b10 and condensate pump 13 or opens the 11st butterfly valve b11, the 12nd butterfly
Condensed water from hydrophobic development unit 4 and steam trap 39 is led to Water Treatment workshop by valve b11 and condensate pump 14.
Water charging system：
1) accidental conditions：Heat supply network water supply source is tap water, opens solenoid valve 57, the 6th butterfly valve b6, the 7th butterfly valve
B7 is chemically treated through water softener 8, into softening water tank 9, open second butterfly valve b2, the 4th butterfly valve b4 and moisturizing water pump 11 or
Third 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 closes solenoid valve 57, opens the
One butterfly valve b1 and the 8th butterfly valve b8 directly fills into high temperature before circulation pump of heat-supply network entrance as emergency water compensating without sofening treatment
Water return pipeline.
In addition, connecing water pipe all the way again, the first shut-off valve 53, the second shut-off valve 54 are opened, by chemicals dosing plant 10, toward heat supply network
The slow rotten agent of system addition, delaying pipe corrosion.
Cooling water system：
The first gate valve 55, the second gate valve 56 are opened, is filled using the built-in power of industrial water cooling steam-operating water circulating pump 5
Set-steam turbine.
It is 40MW that the present invention, which designs winter heating thermic load, and vapour-water pipe shell of 3 heat exchange amount 18MW can be used in heat exchanger
Formula heat exchanger, parallel running.Circulation pump of heat-supply network uses 2 × 100% horizontal double suction water circulating pump (flow 675m3/h, lifts
65m) fortune one is standby, wherein 1 drives (power of motor 200kW, i.e. electric water circulating pump 6) for motor, 1 is Steam Turbine Driven
(driving 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, and water circulating pump is respectively enterd through high-temperature water water return pipeline C, is returned in high-temperature water
Waterpipe C entrances are also equipped with electronic automatic dirt-removing filtering device, periodically remove heat supply network return water impurity.To monitor circling water flow rate, filtering
The measuring device of circling water flow rate is housed after device.70 DEG C of heat supply network return water enters the heat supply network heating of operation after water circulating pump boosts
Device, the high-temperature-hot-water after heat exchangers for district heating heats up enter high-temperature water water supply line B.It is filled equipped with flow measurement in water main pipe
It sets, for monitoring the hot water flow for being sent to heat supply network.Temperature measurement device is housed in supplying hot water main pipe, adjusts the side of heat exchangers for district heating
The hot water temperature of heat supply network is sent in road heat supply network circling water flow rate, control, and the upper limit is 130 DEG C, i.e. T0≤130°。
When normal full load is run, 0.5MPa, 267 DEG C, 16.5t/h steam (i.e. P1Vapour source) it is introduced into horizontal double suction vapour
After the power plant of dynamic water circulating pump (i.e. steam-operating water circulating pump 5)-steam turbine does work, parameter is down to 0.25MPa, after 220 DEG C
(i.e. P2Vapour source) for steam into the heat exchange of wherein first heat exchanger, heating amount 11MW is saturated steaming along with 0.25MPa is flashed
Vapour (i.e. P3Vapour source), first heat exchanger heat exchange amount steam consumption is 19.3t/h, heating amount 13MW；Second, third
Heat exchanger heat exchange steam consumption is respectively 20.7t/h, and heating amount is respectively 13.5MW.
It should be noted that：To those of ordinary skill in the art, under the premise of not changing the principle of the invention also
Several change or deformation can be made to the present invention, this also belongs to protection scope of the present invention.
It is the prior art not elaborate above.
Claims (6)
1. the thermal efficiency optimizes steam-water heat exchanging initial station, it is characterised in that：Including first heat exchanger (1)；The first heat exchanger
(1) steam input terminal is connected by the second electric butterfly valve (a2) with from plant area's main steam header road (A)；First heat exchange
The steam input terminal of device (1) is also connected by the 15th electric butterfly valve (a15) with the steam output end of steam-operating water circulating pump (5)
It connects；The steam input terminal of the first heat exchanger (1) is also connected with the steam output end of hydrophobic development unit (4)；
The steam condensate output end of the first heat exchanger (1) passes through steam trap (39) and condensed water reflux line (H) phase
Connection；The high-temperature water input terminal of the first heat exchanger (1) passes through the 7th electric butterfly valve (a7) and high-temperature water return water input pipe
(J) is connected in road；The high-temperature water output end of the first heat exchanger (1) is connected with high-temperature water water supply line (B)；
It is described also to pass through third electric butterfly valve (a3), the 4th electric butterfly valve (a4) and second respectively from plant area's main steam header road (A)
Heat exchanger (2), third heat exchanger (3) steam input terminal be connected；The high-temperature water water supply line (B) also respectively with institute
State second heat exchanger (2), the high-temperature water output end of the third heat exchanger (3) is connected；The hydrophobic development unit (4)
Condensed water input terminal also respectively with the second heat exchanger (2), the steam condensate output end of the third heat exchanger (3)
It is connected；The condensed water output end of the hydrophobic development unit (4) is connected with the condensed water reflux line (H)；The high temperature
Water return water input channel (J) also passes through the 8th electric butterfly valve (a8), the 9th electric butterfly valve (a9) and second heat exchange respectively
Device (2), the third heat exchanger (3) high-temperature water input terminal be connected；
The condensed water reflux line (H) respectively by the first condensate pump (13) and the second condensate pump (14) with to boiler
Pipeline (D) is connected between waterwheel；First condensate pump (13) input terminal is provided with the 9th butterfly valve (b9), first condensation
Water pump (13) output end is provided with the tenth butterfly valve (b10)；Second condensate pump (14) input terminal is provided with the 11st butterfly valve
(b11), the second condensate pump (14) output end is provided with the 12nd butterfly valve (b12)；
The steam input terminal of the steam-operating water circulating pump (5) by the first electric butterfly valve (a1) with it is described from plant area's main steam header road
(A) it is connected；The high-temperature water input terminal of the steam-operating water circulating pump (5) is returned by the 12nd electric butterfly valve (a12) and high-temperature water
Waterpipe (C) is connected；The high-temperature water output end of the steam-operating water circulating pump (5) passes through the 6th butterfly valve (a6) and the high-temperature water
Return water input channel (J) is connected；
High-temperature water of the high-temperature water water return pipeline (C) also by the 13rd electric butterfly valve (a13) and electric water circulating pump (6) is defeated
Enter end to be connected, the high-temperature water output end of the electric water circulating pump (6) passes through the 14th electric butterfly valve (a14) and the high temperature
Water return water input channel (J) is connected；High-temperature water water return pipeline (C) head end has been arranged in parallel the tenth electric butterfly valve successively
(a10), filter (7), the 11st electric butterfly valve (a11).
2. thermal efficiency optimization steam-water heat exchanging initial station according to claim 1, it is characterised in that：The first heat exchanger
(1) steam input terminal by the 5th electric butterfly valve (a5) and electric pressure-regulating valve (40) with it is described from plant area's main steam header road
(A) it is connected, electric pressure-regulating valve (40) pressure is set as consistent with the steam output end of the hydrophobic development unit (4).
3. thermal efficiency optimization steam-water heat exchanging initial station according to claim 2, it is characterised in that：The high-temperature water return water input
Pipeline (J) is connected by electric control valve (20) with the high-temperature water water supply line (B).
4. thermal efficiency optimization steam-water heat exchanging initial station according to claim 3, it is characterised in that：The high-temperature water water supply line
(B) head end of head end and the high-temperature water water return pipeline (C) is both provided with temperature measuring set；
The electric control valve (20) is controlled by the temperature measuring set of high-temperature water water supply line (B) head end；The steam-operating is followed
Ring water pump (5) and the electric water circulating pump (6) are controlled by the temperature measuring set of high-temperature water water return pipeline (C) head end.
5. the operation method of the thermal efficiency optimization steam-water heat exchanging initial station described in application claim 4, which is characterized in that including as follows
Operating mode：
Accidental conditions：
When the heat exchange amount of first heat exchanger (1) can meet thermal load demands, the first electric butterfly valve (a1), the 15th are opened
Electric butterfly valve (a15)；The second electric butterfly valve (a2) and the 5th electric butterfly valve (a5) are closed, is exported from plant area's main steam header road (A)
Heat source superheated steam【P1, T1】Steam-operating water circulating pump (5) is driven to run, the steam of the steam turbine discharge of steam-operating water circulating pump (5)
【P2, T2】First heat exchanger (1) is entered back by the 15th electric butterfly valve (a15) to exchange heat；First heat exchanger (1) is produced
Raw condensed water is reduced to P through steam trap (39) pressure3, it is drained to condensed water reflux line (H)；
When the heat exchange amount thermic load of first heat exchanger (1) is unable to meet demand, third electric butterfly valve (a3) and the 4th is opened
Electric butterfly valve (a4), the heat source superheated steam exported from plant area's main steam header road (A)【P1, T1】It is directly entered second heat exchanger
(2), third heat exchanger (3) exchanges heat, and the condensed water of generation enters hydrophobic development unit (4), and hydrophobic development unit (4) flashes off
A part of pressure is P2Steam enter first heat exchanger (1) and exchange heat；The condensation water pressure that hydrophobic development unit (4) generates
It is reduced to P3, then lead to condensed water reflux line (H)；
Abnormal operation condition：
Abnormal operation condition one：
When second heat exchanger (2) or third heat exchanger (3) need to overhaul, and when steam-operating water circulating pump (5) normal operation, open
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),
13rd electric butterfly valve (a13), the 14th electric butterfly valve (a14) and the 5th electric butterfly valve (a5), first heat exchanger (1), the
Three heat exchangers (3) or second heat exchanger (2) normal operation, the heat source superheated steam exported from plant area's main steam header road (A)
【P1, T1】Drive the steam turbine operation of steam-operating water circulating pump (5), the steam turbine of steam-operating water circulating pump (5) that steam is discharged【P2, T2】
It enters back into first heat exchanger (1) to exchange heat, the condensed water of generation is reduced to P through steam trap (39) pressure3, lead to condensed water and return
Flow tube road (H)；
When first heat exchanger (1) heat exchange amount thermic load is unable to meet demand, the 4th electric butterfly valve (a4) or can be opened
Three electric butterfly valves (a3), the heat source superheated steam exported from plant area's main steam header road (A)【P1, T1】It is directly entered third heat exchange
Device (3) or second heat exchanger (2) exchange heat, and the condensed water of generation enters hydrophobic development unit (4), and hydrophobic development unit (4) dodges
It is P to steam a part of pressure2Steam exchanges heat into first heat exchanger (1), the condensed water that hydrophobic development unit (4) generates
Pressure is reduced to P3, then lead to condensed water reflux line (H)；
Abnormal operation condition two：
When second heat exchanger (2) or third heat exchanger (3) need to overhaul, and when steam-operating water circulating pump (5) irregular operating,
It needs to run electric water circulating pump (6), closes the first electric butterfly valve (a1), the 6th electric butterfly valve (a6), the 12nd electric butterfly valve
(a12), the second electric butterfly valve (a2), the 13rd electric butterfly valve (a13), the 14th electric butterfly valve (a14), the first heat exchange are opened
Device (1) is directly accessed the heat source superheated steam exported from plant area's main steam header road (A) without pressure regulation【P1, T1】, the first heat is made to hand over
Parallel operation (1) can normal operation, the condensed water of generation is reduced to P through steam trap (39) pressure4, lead to condensed water reflux line (H)；
When first heat exchanger (1) heat exchange amount thermic load is unable to meet demand, the 4th electric butterfly valve (a4) or can be opened
Three electric butterfly valves (a3), the heat source superheated steam exported from plant area's main steam header road (A)【P1, T1】It is directly entered third heat exchange
Device (3) or second heat exchanger (2) exchange heat, and the condensed water of generation enters hydrophobic development unit (4), and hydrophobic development unit (4) dodges
Steam a part of P2Steam exchanges heat into first heat exchanger (1), the condensed water pressure drop that hydrophobic development unit (4) generates
For P3, at this time first heat exchanger (1) interior pressure maintain P2, through steam trap decompression condensation water pressure this maintain P3, therefore
It needs to close the second electric butterfly valve (a2), opens the 5th electric butterfly valve (a5), using electric pressure-regulating valve (40), make to enter the first heat
The steam pressure of exchanger (1) maintains P2；The condensed water that first heat exchanger (1) and hydrophobic development unit (4) generate leads to solidifying
Bear water reflux line (H)；
Abnormal operation condition three：When first heat exchanger (1) needs to overhaul, the first electric butterfly valve (a1), second electronic is closed
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), steam-operating water circulating pump (5), operation electric water circulating pump (6) is stopped using to open the electronic butterfly of third separately or together
Valve (a3) and the 4th electric butterfly valve (a4), the heat source superheated steam exported from plant area's main steam header road (A)【P1, T1】It is directly entered
Second heat exchanger (2) or third heat exchanger (3) exchange heat, and change thermogenetic condensed water and enter hydrophobic development unit (4), draw
To condensed water reflux line (H).
6. the operation method of thermal efficiency optimization steam-water heat exchanging according to claim 5 initial station, which is characterized in that including as follows
Operating mode：
Accidental conditions：
High-temperature water return water from high-temperature water water return pipeline (C) is filter (7), the 11st electronic through the tenth electric butterfly valve (a10)
Butterfly valve (a11), the 12nd electric butterfly valve (a12) into steam-operating water circulating pump (5), then through the 6th electric butterfly valve (a6), connect respectively
Enter first heat exchanger (1), second heat exchanger (2), third heat exchanger (3) to exchange heat, then converges to high-temperature water feed pipe
Road (B), the hot water pipe net for user demand side provide hot water；
When user demand side, thermic load needs to reduce, by adjusting electric control valve (20), in high-temperature water water supply line (B)
It is mixed into the return water that a part is exported without heat exchange high-temperature water water return pipeline (C), supply water temperature is reduced, high temperature supply water temperature is made not surpass
Cross design supply water temperature T0；
Abnormal operation condition：
When steam-operating water circulating pump (5) needs repair and maintenance, the 6th electric butterfly valve (a6), the 12nd electric butterfly valve (a12) are closed；
Open the 13rd electric butterfly valve (a13), high-temperature water water return pipeline (C) of the 14th electric butterfly valve (a14) from user demand side
The return water high-temperature water return water of output is through the tenth electric butterfly valve (a10), filter (7), the 11st electric butterfly valve (a11), and the 13rd
Electric butterfly valve (a13) into electric water circulating pump (6), then through the 14th electric butterfly valve (a14), is respectively connected to the first heat exchange
Device (1), second heat exchanger (2), third heat exchanger (3) exchange heat, then converge to high-temperature water water supply line (B), are user
Demand-side improves hot water；
When user demand side, thermic load needs to reduce, by adjusting electric control valve (20), in high-temperature water water supply line (B)
It is mixed into the return water that a part is exported without heat exchange high-temperature water water return pipeline (C), supply water temperature is reduced, high temperature supply water temperature is made not surpass
Cross design supply water temperature T0。
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| CN201096383Y (en) * | 2007-10-08 | 2008-08-06 | 齐健 | Full-automatic energy-saving device fully utilizing heat exchange stations condensate water thermal value |
| CN102278784B (en) * | 2011-05-13 | 2013-07-17 | 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 |
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| 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 |
| CN102278784B (en) * | 2011-05-13 | 2013-07-17 | 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 |
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