CN110332026A - A kind of solidifying steam extraction power generation heating system and operation method for taking out back heat supply of coupling - Google Patents
A kind of solidifying steam extraction power generation heating system and operation method for taking out back heat supply of coupling Download PDFInfo
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- CN110332026A CN110332026A CN201910535990.1A CN201910535990A CN110332026A CN 110332026 A CN110332026 A CN 110332026A CN 201910535990 A CN201910535990 A CN 201910535990A CN 110332026 A CN110332026 A CN 110332026A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 94
- 238000000605 extraction Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008878 coupling Effects 0.000 title claims abstract description 16
- 238000010168 coupling process Methods 0.000 title claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 16
- 238000010248 power generation Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 249
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 119
- 230000001105 regulatory effect Effects 0.000 claims abstract description 106
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 230000001172 regenerating effect Effects 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000008400 supply water Substances 0.000 claims description 2
- 235000014171 carbonated beverage Nutrition 0.000 claims 2
- 230000008569 process Effects 0.000 abstract description 5
- 230000002427 irreversible effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000005619 thermoelectricity Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/345—Control or safety-means particular thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/38—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type
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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
- 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
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
-
- 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
- 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
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of solidifying steam extraction power generation heating systems and operation method for taking out back heat supply of coupling, it includes: steam turbine mesolow cylinder, condenser, radial turbines, cooling device, vapor-water heat exchanger, the first hydrophobic heat exchanger, initial station heat exchangers for district heating, the second hydrophobic heat exchanger, generator and connected various steam-water pipe and valve.It is connected with cooling steam pipeline at the inlet tube of turbine low pressure cylinder, is disposed with cooling device and regulating valve above.Steam a part of Steam Turbine Through IP Admission extraction enters initial station heat exchangers for district heating and carries out heat supply, and another enters radial turbines and do work.Hydrophobic respectively enter in two hydrophobic heat exchangers that steam generates after vapor-water heat exchanger and the heat exchange of initial station heat exchangers for district heating carries out step heating to part heat supply network return water.By changing the method for operation of system in Heating Season and non-heating season, system high efficiency operation is realized.The present invention realizes the heating of heat supply network step, reduces the irreversible loss of heat transfer process.
Description
Technical field
The invention belongs to cogeneration of heat and power field of energy-saving technology, and in particular to a kind of solidifying steam extraction power generation for taking out back heat supply of coupling supplies
Hot systems and operation method.
Background technique
Currently, the continuous transition and upgrade of China's energy resource structure, new energy ratio gradually increase, traditional thermoelectricity ratio year by year under
Drop, in order to meet power grid to the ability to arrange jobs of new energy, this requirement increasingly increases fired power generating unit flexibility and thermoelectricity decoupling ability
Add.Nearly 2 years, the propulsion with National Energy Board to the flexible sex work of thermoelectricity, more and more fired power generating units carried out not similar shape
The flexibility technological transformation of formula realizes thermal electrolysis coupling ability with it, as optical axis heat supply process, solidifying take out carry on the back heat supply process, electric boiler
Heat storage technology etc..In addition, being occupied with national economic and social development, the improvement of the quickening of Development of China's Urbanization and living standards of the people
People's heat supply is increasingly taken seriously, and National urban Areas benefiting from central heating have reached 73.9 hundred million square metres within 2016；To meet resident
Heat demand promote the conveying capacity of pipe network how on the basis of existing heating network, then be extremely urgent.Currently, it mentions
The effective technological means of riser net conveying capacity is great temperature difference heat supply technology, and heat supply network return water temperature generally controls on a 20-30 DEG C of left side
It is right.
Currently, patent " steam turbine extraction condensing back pressure system and its adjusting method patent No. 201710193938.3 " realizes not
Low pressure (LP) cylinder does not put into longtime running in the case where more exchanging rotor, the technology can high benefit realization unit underload power generation and heat supply,
Realize thermoelectricity decoupling.But for thermoelectricity unit, design heating extraction pressure is both greater than 0.2MPa substantially, and heating is just last
The hot net water required temperature of phase only has 80 DEG C or so, in the presence of the very big available loss of energy when the two exchanges heat.How benefit is sufficiently recycled
With the waste heat overbottom pressure of the solidifying intermediate pressure cylinder heating steam extraction for taking out back heating system, realize that the step of energy recycles, it is extremely urgent.
Summary of the invention
Based on the above situation, the present invention overcomes the above deficiencies in the existing technologies, propose it is a kind of design rationally, property
Can be reliable, realize the solidifying steam extraction power generation heating system and operation method for taking out back heat supply of coupling.
Technical solution used by the present invention solves the above problems is: a kind of solidifying steam extraction power generation heat supply for taking out back heat supply of coupling
System, which is characterized in that it includes: Steam Turbine Through IP Admission, turbine low pressure cylinder, condenser, radial turbines, cooling device, vapour
Water- to-water heat exchanger, the first hydrophobic heat exchanger, initial station heat exchangers for district heating, the second hydrophobic heat exchanger, generator；The Steam Turbine Through IP Admission
It is connect by mesolow cylinder unicom pipeline with turbine low pressure cylinder, and No.1 adjusting is installed on mesolow cylinder unicom pipeline
Valve；The turbine low pressure cylinder is connect by exhaust equipment of LP casing road with condenser, and the condenser is connect with feedwater piping；Institute
The inlet for stating turbine low pressure cylinder is also connected with cooling steam pipeline, and be disposed on cooling steam pipeline cooling device and
No. nine regulating valves；The steam (vapor) outlet of the Steam Turbine Through IP Admission is connect with steam extraction head, and the steam extraction head is divided into two-way, all the way
It is connect by suction branch with initial station heat exchangers for district heating, another connect with radial turbines, and be equipped with two on steam extraction head
Number regulating valve, No. four regulating valves are equipped on suction branch, are equipped with No. three regulating valves in the air inlet of radial turbines；It is described
Radial turbines are connect by radial turbines blow-off line with vapor-water heat exchanger, and the hydrophobic outlet of the vapor-water heat exchanger passes through first
Drain water piping inlet tube is connect with the hydrophobic import of the first hydrophobic heat exchanger, the hydrophobic outlet of first hydrophobic heat exchanger and the
The connection of one drain water piping outlet；The hydrophobic outlet of the initial station heat exchangers for district heating passes through the second drain water piping inlet tube and second
The hydrophobic import of hydrophobic heat exchanger connects, and the hydrophobic outlet of second hydrophobic heat exchanger and the second drain water piping outlet connect
It connects；Heat supply network return water main pipe is divided into two-way, and passes through the first manifold inlet of heat supply network return water pipe, the second manifold inlet of heat supply network return water respectively
Pipe is connect with the second hydrophobic heat exchanger, the first hydrophobic heat exchanger, and is equipped with No. five on heat supply network return water the first manifold inlet pipe
Regulating valve is equipped with No. six regulating valves on heat supply network return water the second manifold inlet pipe；The high-temperature water of second hydrophobic heat exchanger
Outlet passes through the first branch outlet of heat supply network return water pipe, the high-temperature water of heat supply network the first manifold inlet pipe and initial station heat exchangers for district heating of water supply
Import connection, and No. eight regulating valves, the height of the initial station heat exchangers for district heating are installed on heat supply network the first manifold inlet pipe of water supply
Warm water export is connected to by heat supply network the first branch outlet pipe of water supply with heat supply network water main pipe；The high temperature of first hydrophobic heat exchanger
Water out by the second branch outlet of heat supply network return water pipe, heat supply network supply water the second manifold inlet pipe and vapor-water heat exchanger high-temperature water into
Mouth connection, and No. seven regulating valves are installed on heat supply network the second manifold inlet pipe of water supply, the high-temperature water of the vapor-water heat exchanger goes out
Mouth is connected to by heat supply network the second branch outlet pipe of water supply with heat supply network water main pipe；The generator and turbine low pressure cylinder, radial direction
Turbine connection.
Further, when the steam discharge of Steam Turbine Through IP Admission is completely used for heat supply, and steam turbine is in backpressure condition, by cold
But steam cools down turbine low pressure cylinder, takes away the heat generated by windage loss, guarantees the peace of turbine low pressure cylinder
Row for the national games.
Further, No.1 regulating valve is closed in solidifying pumping back heat supply, heating steam fully enters steam extraction head, passes through tune
No. three regulating valves and No. four regulating valves are saved, control enters the steam extraction amount of radial turbines and initial station heat exchangers for district heating respectively.
Further, into the steam of radial turbines after expansion work, the steam exhaust of generation passes through radial turbines steam discharge
Pipeline enters that vapor-water heat exchanger is sufficiently exothermic, and the heat supply network of formation is hydrophobic after the first hydrophobic heat exchanger secondary heat exchange, and temperature obtains
The hydrophobic low pressure that steam turbine is delivered to by the first drain water piping outlet of heat supply network to further decreasing, after secondary heat exchange cooling
Heat regenerative system.
Further, sufficiently exothermic into the steam progress of initial station heat exchangers for district heating, the heat supply network of formation is hydrophobic to pass through second
After hydrophobic heat exchanger secondary heat exchange, temperature is further decreased, and the heat supply network after secondary heat exchange cooling is hydrophobic hydrophobic by second
Pipe outlet pipe is delivered to the low pressure heat regenerative system of steam turbine.
Further, primary net heat supply network return water flows in heat supply network return water main pipe, and passes through first, heat supply network return water respectively
Tube inlet pipe and heat supply network return water the second manifold inlet pipe enter in the second hydrophobic heat exchanger and the first hydrophobic heat exchanger；Primary net heat
Net return water enters in the first branch outlet of heat supply network return water pipe after the second hydrophobic heat exchanger is heated up, then is supplied water by heat supply network
First manifold inlet pipe enters in the heat exchangers for district heating of initial station to be heated again, is come out from heat supply network the first branch outlet pipe of water supply, most
Enter heat supply network water main pipe eventually；Primary net heat supply network return water enters heat supply network return water second after the first hydrophobic heat exchanger is heated up
It in branch outlet pipe, then is entered in vapor-water heat exchanger by heat supply network the second manifold inlet pipe of water supply and is heated again, supplied from heat supply network
Water the second branch outlet pipe comes out, and eventually enters into heat supply network water main pipe.
The operation method of the solidifying steam extraction power generation heating system for taking out back heat supply of the coupling is as follows:
In non-heating season, No.1 regulating valve is only opened, other regulating valves are in close state, and steam turbine is in pure condensate operating condition fortune
Row, the steam from Steam Turbine Through IP Admission enter turbine low pressure cylinder expansion work by No.1 regulating valve, and steam exhaust passes through low pressure
Cylinder blow-off line enters condenser, and the multistage heat regenerative system of steam turbine is entered back by feedwater piping after condensation, finally into
Enter boiler；
In latter stage at the beginning of Heating Season, when heating load demand is lesser, close No. four regulating valves, No. five regulating valves, No. eight regulating valves,
No. nine regulating valves open No.1 regulating valve, No. two regulating valves, No. three regulating valves, No. six regulating valves, No. seven regulating valves, most of
Steam extraction from Steam Turbine Through IP Admission enters turbine low pressure cylinder by mesolow cylinder unicom pipeline, and small part heating steam extraction passes through
Steam extraction head enters radial turbines acting, sufficiently exothermic, formation that steam exhaust by radial turbines blow-off line enters vapor-water heat exchanger
Heat supply network it is hydrophobic temperature is further decreased after the first hydrophobic heat exchanger secondary heat exchange, secondary heat exchange cooling after heat
Net the hydrophobic low pressure heat regenerative system that steam turbine is delivered to by the first drain water piping outlet；Heat supply network from heat supply network return water main pipe
Return water all passes through heat supply network return water the second manifold inlet pipe and enters the first hydrophobic heat exchanger, laggard by hydrophobic heat temperature raising wherein
Enter in heat supply network return water the second branch outlet pipe, then is entered in vapor-water heat exchanger again by heat supply network the second manifold inlet pipe of water supply
Heating comes out from heat supply network the second branch outlet pipe of water supply, eventually enters into heat supply network water main pipe；
In latter stage at the beginning of Heating Season, when heating load demand is larger, No. nine regulating valves are only closed, other regulating valves are all in opening
State, steam turbine are in take out and run under solidifying operating condition；Steam extraction a part from Steam Turbine Through IP Admission passes through mesolow cylinder cross over pipe
Road enters turbine low pressure cylinder, and another part enters steam extraction head, by adjusting the aperture of No. three regulating valves and No. four regulating valves,
Control enters the steam extraction amount of radial turbines and initial station heat exchangers for district heating respectively；Heat supply network return water a part from heat supply network return water main pipe
Enter the second hydrophobic heat exchanger by heat supply network return water the first manifold inlet pipe, another part passes through the second manifold inlet of heat supply network return water
Pipe enters the first hydrophobic heat exchanger；Heat supply network return water in two hydrophobic heat exchangers after heat temperature raising respectively enters heat supply network return water
One branch outlet pipe and heat supply network return water the second branch outlet pipe, then respectively enter in initial station heat exchangers for district heating and vapor-water heat exchanger again
Secondary heating finally summarizes into heat supply network water main pipe；
In the Heating Season high and cold phase, No.1 regulating valve is only closed, other regulating valves are in back pressure all in opening state, steam turbine
It is run under operating condition；A small amount of steam from Steam Turbine Through IP Admission or other sources successively passes through No. nine regulating valves and cooling device,
By cooling steam pipeline, eventually enters into turbine low pressure cylinder and it is cooled down；Condenser is substantially at stoppage in transit state at this time,
Steam extraction from Steam Turbine Through IP Admission fully enters steam extraction head, by adjusting the aperture of No. three regulating valves and No. four regulating valves,
Control enters the steam extraction amount of radial turbines and initial station heat exchangers for district heating respectively；Heat supply network return water a part from heat supply network return water main pipe
Enter the second hydrophobic heat exchanger by heat supply network return water the first manifold inlet pipe, another part passes through the second manifold inlet of heat supply network return water
Pipe enters the first hydrophobic heat exchanger；Heat supply network return water in two hydrophobic heat exchangers after heat temperature raising respectively enters heat supply network return water
One branch outlet pipe and heat supply network return water the second branch outlet pipe, then respectively enter in initial station heat exchangers for district heating and vapor-water heat exchanger again
Secondary heating finally summarizes into heat supply network water main pipe.
Compared with prior art, the present invention having the following advantages that and effect: (1) the present invention has rational design, and structure is simple, property
Can be reliable, solidifying pumping back heat supply is coupled in steam extraction thermoelectricity heating system, is reduced engineering initial cost, is realized thermal power plant's energy
Comprehensive cascade utilization；(2) the present invention is based on cascaded utilization of energy principles, rationally design coupled system, make full use of hydrophobic waste heat,
It realizes and the step temperature rising of primary net return water is heated, effectively reduce the irreversible loss of heat transfer process, increase heat supply network and supply back
Water temperature difference improves the conveying capacity of heating network, practice value with higher.(3) present invention is directed to different heating
Phase heat user reasonably adjusts system operation mode to the difference of heating load demand, using radial turbines to the overbottom pressure of heating steam extraction
It is recycled, then successively the waste heat after acting is recycled using vapor-water heat exchanger and hydrophobic heat exchanger, realize energy
The high efficiente callback for measuring step utilizes.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
In figure: Steam Turbine Through IP Admission 1；Turbine low pressure cylinder 2；Condenser 3；Radial turbines 4；Cooling device 5；Steam-water heat exchanging
Device 6；First hydrophobic heat exchanger 7；Initial station heat exchangers for district heating 8；Second hydrophobic heat exchanger 9；Generator 10；No.1 regulating valve 11；Two
Number regulating valve 12；No. three regulating valves 13；No. four regulating valves 14；No. five regulating valves 15；No. six regulating valves 16；No. seven regulating valves 17；
No. eight regulating valves 18；No. nine regulating valves 19；Mesolow cylinder unicom pipeline 20；Cooling steam pipeline 21；Exhaust equipment of LP casing road 22；
Feedwater piping 23；Steam extraction head 24；Suction branch 25；Radial turbines blow-off line 26；First drain water piping inlet tube 27；First
Drain water piping outlet 28；Second drain water piping inlet tube 29；Second drain water piping outlet 30；Heat supply network return water main pipe 31；Heat
The first manifold inlet of net return water pipe 32；The first branch outlet of heat supply network return water pipe 33；The second manifold inlet of heat supply network return water pipe 34；Heat supply network
The second branch outlet of return water pipe 35；Heat supply network the second manifold inlet pipe 36 of water supply；Heat supply network the second branch outlet pipe 37 of water supply；Heat supply network supplies
The first manifold inlet of water pipe 38；Heat supply network the first branch outlet pipe 39 of water supply；Heat supply network water main pipe 40.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Referring to Fig. 1, the steam extraction power generation heating system of the solidifying pumping back heat supply of coupling in the present embodiment, it includes: in steam turbine
Cylinder pressure 1, turbine low pressure cylinder 2, condenser 3, radial turbines 4, cooling device 5, vapor-water heat exchanger 6, the first hydrophobic heat exchanger 7,
Initial station heat exchangers for district heating 8, the second hydrophobic heat exchanger 9, generator 10.
Steam Turbine Through IP Admission 1 is connect by mesolow cylinder unicom pipeline 20 with turbine low pressure cylinder 2, and is joined in mesolow cylinder
It threads a pipe and No.1 regulating valve 11 is installed on 20；Turbine low pressure cylinder 2 is connect by exhaust equipment of LP casing road 22 with condenser 3,
Condenser 3 is connect with feedwater piping 23；The inlet of turbine low pressure cylinder 2 is also connected with cooling steam pipeline 21, and in cooling
Cooling device 5 and No. nine regulating valves 19 are disposed on jet chimney 21；The steam (vapor) outlet and steam extraction head 24 of Steam Turbine Through IP Admission 1
Connection, steam extraction head 24 are divided into two-way, are connect all the way by suction branch 25 with initial station heat exchangers for district heating 8, another and radial direction
Turbine 4 connects, and No. two regulating valves 12 are equipped on steam extraction head 24, and No. four regulating valves are equipped on suction branch 25
14, No. three regulating valves 13 are installed in the air inlet of radial turbines 4；Radial turbines 4 pass through radial turbines blow-off line 26 and vapour
Water- to-water heat exchanger 6 connects, and the hydrophobic outlet of vapor-water heat exchanger 6 passes through the first drain water piping inlet tube 27 and the first hydrophobic heat exchanger 7
Hydrophobic import connection, the hydrophobic outlet of the first hydrophobic heat exchanger 7 is connect with the first drain water piping outlet 28；Initial station heat supply network adds
The hydrophobic outlet of hot device 8 is connect by the second drain water piping inlet tube 29 with the hydrophobic import of the second hydrophobic heat exchanger 9, and second dredges
The hydrophobic outlet of water- to-water heat exchanger 9 is connect with the second drain water piping outlet 30；Heat supply network return water main pipe 31 is divided into two-way, and leads to respectively
It is hydrophobic to cross the first manifold inlet of heat supply network return water pipe 32, the second manifold inlet of heat supply network return water pipe 34 and the second hydrophobic heat exchanger 9, first
Heat exchanger 7 connects, and is equipped with No. five regulating valves 15 on the first manifold inlet of heat supply network return water pipe 32, at second, heat supply network return water
No. six regulating valves 16 are installed on tube inlet pipe 34；The high temperature water out of second hydrophobic heat exchanger 9 passes through first, heat supply network return water
Pipe outlet 33, heat supply network the first manifold inlet pipe 38 of water supply are connect with the high temperature water inlet of initial station heat exchangers for district heating 8, and in heat supply network
It supplies water and No. eight regulating valves 18 is installed on the first manifold inlet pipe 38, the high temperature water out of initial station heat exchangers for district heating 8 passes through heat supply network
The first branch outlet pipe 39 that supplies water is connected to heat supply network water main pipe 40；The high temperature water out of first hydrophobic heat exchanger 7 passes through heat supply network
The second branch outlet of return water pipe 35, heat supply network the second manifold inlet pipe 36 of water supply are connect with the high temperature water inlet of vapor-water heat exchanger 6, and
No. seven regulating valves 17 are installed on heat supply network the second manifold inlet pipe 36 of water supply, the high temperature water out of vapor-water heat exchanger 6 passes through heat
Net the second branch outlet pipe 37 of water supply is connected to heat supply network water main pipe 40；Generator 10 and turbine low pressure cylinder 2, radial turbines 4
Connection.
In the present embodiment, when the steam discharge of Steam Turbine Through IP Admission 1 is completely used for heat supply, and steam turbine is in backpressure condition,
Turbine low pressure cylinder 2 is cooled down by cooling steam, takes away the heat generated by windage loss, guarantees steam turbine low-pressure
The safe operation of cylinder 2.
In the present embodiment, No.1 regulating valve 11 is closed in solidifying pumping back heat supply, heating steam fully enters steam extraction head
24, by adjusting No. three regulating valves 13 and No. four regulating valves 14, control enters radial turbines 4 and initial station heat exchangers for district heating 8 respectively
Steam extraction amount.
In the present embodiment, into the steam of radial turbines 4 after expansion work, the steam exhaust of generation passes through radial turbines
Blow-off line 26 is sufficiently exothermic into vapor-water heat exchanger 6, and the heat supply network of formation is hydrophobic to pass through 7 secondary heat exchange of the first hydrophobic heat exchanger
Afterwards, temperature is further decreased, and the heat supply network after secondary heat exchange cooling is hydrophobic to be delivered to by the first drain water piping outlet 28
The low pressure heat regenerative system of steam turbine.
In the present embodiment, sufficiently exothermic, the hydrophobic process of the heat supply network of formation is carried out into the steam of initial station heat exchangers for district heating 8
After second hydrophobic heat exchanger, 9 secondary heat exchange, temperature is further decreased, and the heat supply network after secondary heat exchange cooling is hydrophobic to pass through second
Drain water piping outlet 30 is delivered to the low pressure heat regenerative system of steam turbine.
In the present embodiment, primary net heat supply network return water flows in heat supply network return water main pipe 31, and passes through heat supply network return water respectively
First manifold inlet pipe 32 and the second manifold inlet of heat supply network return water pipe 34 enter the second hydrophobic heat exchanger 9 and the first hydrophobic heat exchanger
In 7；Primary net heat supply network return water enters the first branch outlet of heat supply network return water pipe 33 after the second hydrophobic heat exchanger 9 is heated up
In, then by the heat supply network first manifold inlet pipe 38 that supplies water enter in initial station heat exchangers for district heating 8 and heat again, supplies water the from heat supply network
One branch outlet pipe 39 comes out, and eventually enters into heat supply network water main pipe 40；Primary net heat supply network return water is added in the first hydrophobic heat exchanger 7
Enter in the second branch outlet of heat supply network return water pipe 35 after heat heating, then vapour is entered by heat supply network the second manifold inlet pipe 36 of water supply
It is heated again in water- to-water heat exchanger 6, is come out from heat supply network the second branch outlet pipe 37 of water supply, eventually enter into heat supply network water main pipe 40.
The carrying out practically method of the present embodiment is as follows:
In non-heating season, No.1 regulating valve 11 is only opened, other regulating valves are in close state, and steam turbine is in pure condensate operating condition
Operation, the steam from Steam Turbine Through IP Admission 1 enter 2 expansion work of turbine low pressure cylinder by No.1 regulating valve 11, and steam exhaust is logical
It crosses low pressure (LP) cylinder blow-off line 22 and enters condenser 3, enter back into the multistage backheat of steam turbine by feedwater piping 23 after condensation
System eventually enters into boiler；
In latter stage at the beginning of Heating Season, when heating load demand is lesser, the regulating valve 15, eight of No. four regulating valves 14, five tune is closed
Section 18, No. nine regulating valves 19 of valve, opening 13, No. six regulating valves 16 of the regulating valve 12, three of No.1 regulating valve 11, two regulating valve,
No. seven regulating valves 17, most of steam extraction from Steam Turbine Through IP Admission 1 are low into steam turbine by mesolow cylinder unicom pipeline 20
Cylinder pressure 2, small part heating steam extraction enter radial turbines 4 by steam extraction head 24 and do work, and steam exhaust passes through radial turbines blow-off line
26 is sufficiently exothermic into vapor-water heat exchanger 6, and the heat supply network of formation is hydrophobic after 7 secondary heat exchange of the first hydrophobic heat exchanger, and temperature obtains
To further decreasing, the heat supply network after secondary heat exchange cooling is hydrophobic to be delivered to the low of steam turbine by the first drain water piping outlet 28
Push back hot systems；Heat supply network return water from heat supply network return water main pipe 31 all passes through the second manifold inlet of heat supply network return water pipe 34 and enters the
One hydrophobic heat exchanger 7 enters in the second branch outlet of heat supply network return water pipe 35 after wherein by hydrophobic heat temperature raising, then passes through heat supply network
The second manifold inlet pipe 36 that supplies water enters in vapor-water heat exchanger 6 to be heated again, is gone out from heat supply network the second branch outlet pipe 37 of water supply
Come, eventually enters into heat supply network water main pipe 40；
In latter stage at the beginning of Heating Season, when heating load demand is larger, No. nine regulating valves 19 are only closed, other regulating valves are all in beating
Open state, steam turbine are in take out and run under solidifying operating condition；Steam extraction a part from Steam Turbine Through IP Admission 1 passes through mesolow cylinder connection
Pipeline 20 enters turbine low pressure cylinder 2, and another part enters steam extraction head 24, by adjusting No. three regulating valves 13 and No. four adjustings
The aperture of valve 14, control enters the steam extraction amount of radial turbines 4 and initial station heat exchangers for district heating 8 respectively；From heat supply network return water main pipe 31
Heat supply network return water a part by the first manifold inlet of heat supply network return water pipe 32 enter the second hydrophobic heat exchanger 9, another part passes through
The second manifold inlet of heat supply network return water pipe 34 enters the first hydrophobic heat exchanger 7；Heat in two hydrophobic heat exchangers after heat temperature raising
Net return water respectively enters the first branch outlet of heat supply network return water pipe 33 and the second branch outlet of heat supply network return water pipe 35, then respectively enters head
It stands and is heated in heat exchangers for district heating 8 and vapor-water heat exchanger 6 again, finally summarized into heat supply network water main pipe 40；
In the Heating Season high and cold phase, No.1 regulating valve 11 is only closed, other regulating valves are in back all in opening state, steam turbine
It is run under pressure operating condition；A small amount of steam from Steam Turbine Through IP Admission 1 or other sources successively passes through No. nine regulating valves 19 and cooling
Device 5 is eventually entered into turbine low pressure cylinder 2 and is cooled down to it by cooling steam pipeline 21；Condenser 3 is located substantially at this time
In stoppage in transit state, the steam extraction from Steam Turbine Through IP Admission 1 fully enters steam extraction head 24, by adjusting No. three regulating valves 13 and four
The aperture of number regulating valve 14, control enters the steam extraction amount of radial turbines 4 and initial station heat exchangers for district heating 8 respectively；From heat supply network return water
Heat supply network return water a part of main pipe 31 enters the second hydrophobic heat exchanger 9, another portion by the first manifold inlet of heat supply network return water pipe 32
Divide and the first hydrophobic heat exchanger 7 is entered by the second manifold inlet of heat supply network return water pipe 34；The heat temperature raising in two hydrophobic heat exchangers
Heat supply network return water afterwards respectively enters the first branch outlet of heat supply network return water pipe 33 and the second branch outlet of heat supply network return water pipe 35, then distinguishes
Into being heated again in initial station heat exchangers for district heating 8 and vapor-water heat exchanger 6, finally summarize into heat supply network water main pipe 40.
In the carrying out practically method of the present embodiment, to flowing through the primary net of each equipment for return water and heating steam flow
When being adjusted, pass through the opening amount signal of DCS system remote transmission valve, mainly to adjust to the aperture of each valve
Section, to realize the adjusting to flow.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology should belong to guarantor of the invention in made change without departing from the spirit and scope of the invention
Protect range.
Claims (7)
1. a kind of solidifying steam extraction power generation heating system for taking out back heat supply of coupling, which is characterized in that it includes: Steam Turbine Through IP Admission (1),
Turbine low pressure cylinder (2), condenser (3), radial turbines (4), cooling device (5), vapor-water heat exchanger (6), the first hydrophobic heat exchange
Device (7), initial station heat exchangers for district heating (8), the second hydrophobic heat exchanger (9), generator (10)；The Steam Turbine Through IP Admission (1) passes through
Mesolow cylinder unicom pipeline (20) is connect with turbine low pressure cylinder (2), and is equipped with one on mesolow cylinder unicom pipeline (20)
Number regulating valve (11)；The turbine low pressure cylinder (2) is connect by exhaust equipment of LP casing road (22) with condenser (3), described solidifying
Vapour device (3) is connect with feedwater piping (23)；The inlet of the turbine low pressure cylinder (2) is also connected with cooling steam pipeline
(21), cooling device (5) and No. nine regulating valves (19) and on cooling steam pipeline (21) are disposed with；The Steam Turbine Through IP Admission
(1) steam (vapor) outlet is connect with steam extraction head (24), and the steam extraction head (24) is divided into two-way, passes through suction branch (25) all the way
It is connect with initial station heat exchangers for district heating (8), another connect with radial turbines (4), and is equipped with No. two on steam extraction head (24)
Regulating valve (12) is equipped with No. four regulating valves (14) on suction branch (25), is equipped with three in the air inlet of radial turbines (4)
Number regulating valve (13)；The radial turbines (4) are connect by radial turbines blow-off line (26) with vapor-water heat exchanger (6), described
The hydrophobic outlet of vapor-water heat exchanger (6) by the first drain water piping inlet tube (27) and the first hydrophobic heat exchanger (7) it is hydrophobic into
Mouth connection, the hydrophobic outlet of first hydrophobic heat exchanger (7) is connect with the first drain water piping outlet (28)；The initial station heat
The hydrophobic outlet of net heater (8) passes through the hydrophobic import of the second drain water piping inlet tube (29) and the second hydrophobic heat exchanger (9)
Connection, the hydrophobic outlet of second hydrophobic heat exchanger (9) is connect with the second drain water piping outlet (30)；Heat supply network return water main pipe
(31) it is divided into two-way, and passes through the first manifold inlet of heat supply network return water pipe (32), heat supply network return water the second manifold inlet pipe (34) respectively
It connect with the second hydrophobic heat exchanger (9), the first hydrophobic heat exchanger (7), and pacifies on heat supply network return water the first manifold inlet pipe (32)
Equipped with No. five regulating valves (15), No. six regulating valves (16) are installed on heat supply network return water the second manifold inlet pipe (34)；Described
The high temperature water out of two hydrophobic heat exchangers (9) is entered by heat supply network return water the first branch outlet pipe (33), heat supply network the first branch pipe of water supply
Mouth pipe (38) is connect with the high temperature water inlet of initial station heat exchangers for district heating (8), and is supplied water on the first manifold inlet pipe (38) in heat supply network
No. eight regulating valves (18) are installed, the high temperature water out of the initial station heat exchangers for district heating (8) is gone out by heat supply network the first branch pipe of water supply
Mouth pipe (39) is connected to heat supply network water main pipe (40)；The high temperature water out of first hydrophobic heat exchanger (7) passes through heat supply network return water
Second branch outlet pipe (35), heat supply network the second manifold inlet pipe (36) of water supply are connect with the high temperature water inlet of vapor-water heat exchanger (6),
And No. seven regulating valves (17), the high temperature of the vapor-water heat exchanger (6) are installed on heat supply network the second manifold inlet pipe (36) of water supply
Water out is connected to by heat supply network the second branch outlet pipe (37) of water supply with heat supply network water main pipe (40)；The generator (10) and vapour
Turbine low pressure (LP) cylinder (2), radial turbines (4) connection.
2. the solidifying steam extraction power generation heating system for taking out back heat supply of coupling according to claim 1, which is characterized in that work as steam turbine
The steam discharge of intermediate pressure cylinder (1) is completely used for heat supply, when steam turbine is in backpressure condition, by cooling steam to turbine low pressure cylinder
(2) it is cooled down, takes away the heat generated by windage loss, guarantee the safe operation of turbine low pressure cylinder (2).
3. the solidifying steam extraction power generation heating system for taking out back heat supply of coupling according to claim 1, which is characterized in that take out back solidifying
No.1 regulating valve (11) are closed when heat supply, heating steam fully enters steam extraction head (24), by adjusting No. three regulating valves (13)
With No. four regulating valves (14), control enters the steam extraction amount of radial turbines (4) and initial station heat exchangers for district heating (8) respectively.
4. the solidifying steam extraction power generation heating system for taking out back heat supply of coupling according to claim 1, which is characterized in that enter radial
For the steam of turbine (4) after expansion work, the steam exhaust of generation enters vapor-water heat exchanger by radial turbines blow-off line (26)
(6) sufficiently exothermic, the heat supply network of formation is hydrophobic, and temperature is further decreased after the first hydrophobic heat exchanger (7) secondary heat exchange,
The hydrophobic low pressure heat regenerative system that steam turbine is delivered to by the first drain water piping outlet (28) of heat supply network after secondary heat exchange cooling.
5. the solidifying steam extraction power generation heating system for taking out back heat supply of coupling according to claim 1, which is characterized in that enter initial station
The steam progress of heat exchangers for district heating (8) is sufficiently exothermic, and the heat supply network of formation is hydrophobic to pass through the second hydrophobic heat exchanger (9) secondary heat exchange
Afterwards, temperature is further decreased, and the heat supply network after secondary heat exchange cooling is hydrophobic to be conveyed by the second drain water piping outlet (30)
To the low pressure heat regenerative system of steam turbine.
6. the solidifying steam extraction power generation heating system for taking out back heat supply of coupling according to claim 1, which is characterized in that primary net heat
The flowing in heat supply network return water main pipe (31) of net return water, and pass through the first manifold inlet of heat supply network return water pipe (32) and heat supply network return water respectively
Second manifold inlet pipe (34) enters in the second hydrophobic heat exchanger (9) and the first hydrophobic heat exchanger (7)；Primary net heat supply network return water exists
Second hydrophobic heat exchanger (9) enters in the first branch outlet of heat supply network return water pipe (33) after being heated up, then is supplied water by heat supply network
First manifold inlet pipe (38) enters in initial station heat exchangers for district heating (8) to be heated again, from heat supply network the first branch outlet pipe of water supply
(39) it comes out, eventually enters into heat supply network water main pipe (40)；Primary net heat supply network return water is heated up in the first hydrophobic heat exchanger (7)
Enter in the second branch outlet of heat supply network return water pipe (35) afterwards, then carbonated drink is entered by heat supply network the second manifold inlet pipe (36) of water supply
Heat exchanger heats again in (6), supplies water the second branch outlet pipe (37) out from heat supply network, eventually enters into heat supply network water main pipe
(40).
7. a kind of operation side for the steam extraction power generation heating system for carrying on the back heat supply such as the solidifying pumping of coupling of any of claims 1-6
Method, which is characterized in that its operation method is as follows:
In non-heating season, No.1 regulating valve (11) only are opened, other regulating valves are in close state, and steam turbine is in pure condensate work
Condition operation, the steam from Steam Turbine Through IP Admission (1), which enters turbine low pressure cylinder (2) expansion by No.1 regulating valve (11), to be done
Function, steam exhaust enter condenser (3) by exhaust equipment of LP casing road (22), enter back into vapour by feedwater piping (23) after condensation
The multistage heat regenerative system of turbine, eventually enters into boiler；
In latter stage at the beginning of Heating Season, when heating load demand is lesser, No. four regulating valves (14), No. five regulating valves (15), eight are closed
Number regulating valve (18), No. nine regulating valves (19), open No.1 regulating valve (11), No. two regulating valves (12), No. three regulating valves (13),
No. six regulating valves (16), No. seven regulating valves (17), most of steam extraction from Steam Turbine Through IP Admission (1) pass through mesolow cylinder connection
Pipeline (20) enters turbine low pressure cylinder (2), and small part heating steam extraction enters radial turbines (4) by steam extraction head (24) and does
Function, steam exhaust, which by radial turbines blow-off line (26) enters that vapor-water heat exchanger (6) are sufficiently exothermic, and the heat supply network of formation is hydrophobic, passes through the
After one hydrophobic heat exchanger (7) secondary heat exchange, temperature is further decreased, and the heat supply network after secondary heat exchange cooling is hydrophobic to pass through first
Drain water piping outlet (28) is delivered to the low pressure heat regenerative system of steam turbine；Heat supply network return water from heat supply network return water main pipe (31) is complete
Portion enters the first hydrophobic heat exchanger (7) by the second manifold inlet of heat supply network return water pipe (34), wherein by after hydrophobic heat temperature raising
Into in heat supply network return water the second branch outlet pipe (35), then carbonated drink is entered by heat supply network the second manifold inlet pipe (36) of water supply and is changed
It is heated again in hot device (6), supplies water the second branch outlet pipe (37) out from heat supply network, eventually enter into heat supply network water main pipe (40)；
In latter stage at the beginning of Heating Season, when heating load demand is larger, only close No. nine regulating valves (19), other regulating valves all in
Opening state, steam turbine are in take out and run under solidifying operating condition；Steam extraction a part from Steam Turbine Through IP Admission (1) passes through mesolow cylinder
Unicom pipeline (20) enters turbine low pressure cylinder (2), and another part enters steam extraction head (24), by adjusting No. three regulating valves
(13) and the aperture of No. four regulating valves (14), control enters the steam extractions of radial turbines (4) and initial station heat exchangers for district heating (8) respectively
Amount；Heat supply network return water a part from heat supply network return water main pipe (31) enters second by the first manifold inlet of heat supply network return water pipe (32)
Hydrophobic heat exchanger (9), another part enter the first hydrophobic heat exchanger (7) by the second manifold inlet of heat supply network return water pipe (34)；?
Heat supply network return water in two hydrophobic heat exchangers after heat temperature raising respectively enters heat supply network return water the first branch outlet pipe (33) and heat supply network
Return water the second branch outlet pipe (35), then respectively enter and heated again in initial station heat exchangers for district heating (8) and vapor-water heat exchanger (6),
Finally summarize into heat supply network water main pipe (40)；
In the Heating Season high and cold phase, No.1 regulating valve (11) only are closed, other regulating valves are in all in opening state, steam turbine
It is run under back pressure operating condition；A small amount of steam from Steam Turbine Through IP Admission (1) or other sources successively passes through No. nine regulating valves (19)
It eventually enters into turbine low pressure cylinder (2) by cooling steam pipeline (21) with cooling device (5) and it is cooled down；It coagulates at this time
Vapour device (3) is substantially at stoppage in transit state, and the steam extraction from Steam Turbine Through IP Admission (1) fully enters steam extraction head (24), passes through tune
The aperture of No. three regulating valves (13) and No. four regulating valves (14) is saved, control enters radial turbines (4) respectively and initial station heat supply network heats
The steam extraction amount of device (8)；Heat supply network return water a part from heat supply network return water main pipe (31) passes through the first manifold inlet of heat supply network return water pipe
(32) enter the second hydrophobic heat exchanger (9), another part is hydrophobic into first by the second manifold inlet of heat supply network return water pipe (34)
Heat exchanger (7)；Heat supply network return water in two hydrophobic heat exchangers after heat temperature raising respectively enters the first branch outlet of heat supply network return water
(33) and heat supply network return water the second branch outlet pipe (35) are managed, then respectively enters initial station heat exchangers for district heating (8) and vapor-water heat exchanger (6)
In heat again, finally summarize into heat supply network water main pipe (40).
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| CN110332026B (en) | 2024-03-08 |
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