CN106931465A - The united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove - Google Patents
The united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove Download PDFInfo
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- CN106931465A CN106931465A CN201710195763.XA CN201710195763A CN106931465A CN 106931465 A CN106931465 A CN 106931465A CN 201710195763 A CN201710195763 A CN 201710195763A CN 106931465 A CN106931465 A CN 106931465A
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- Prior art keywords
- air heater
- back pressure
- steam
- steam air
- high back
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention relates to large-scale thermal power High Back Pressure Steam Turbine Units runtime, a kind of united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove is particularly disclosed.The united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove, including the steam air heater in air channel, top half is separately mounted in flue and air channel and positioned at the lower wind direction position of steam air heater under air preheater, it is characterised in that：The steam air heater connects condenser by steam air heater water inlet pipe with connecting for condensing water conduit, and steam air heater water inlet pipe connects other remaining hot water water inlet pipes；Steam air heater is connected precision processing system with the connection of precision processing system water inlet pipe by steam air heater outlet pipe, and steam air heater outlet pipe connects other remaining hot water outlet pipes.Simple structure of the present invention, it is easy to realize, the condensing water temperature for solving high back pressure thermal power plant unit is too high, the problem that precision processing system cannot normally run, it is ensured that unit operation safety.
Description
（One）Technical field
The present invention relates to large-scale thermal power High Back Pressure Steam Turbine Units runtime, more particularly to a kind of High Back Pressure Steam Turbine Units machine stove is united
Condensing water temperature control system.
（Two）Background technology
Management with country to atmosphere pollution is increased and the popularization to energy-saving and emission-reduction project, and high back pressure circulating water heating is
Through being emphasis energy-saving and emission-reduction project of the power industry in the popularization of central heating area.
High back pressure circulating water heating unit heats heat supply network recirculated water by improving exhaust steam pressure and reaches recovery steam turbine row
The purpose of vapour cold source energy, because greatly improving for exhaust steam pressure causes condensing water temperature significantly to raise, so that former condensate
Precision processing system inlet water temperature degree exceedes system requirements, it is impossible to normal operation.
Conventional steam air heater uses the heating air intake that draws gas, subsequently into air preheater.Because steam quality is higher, cause
A certain degree of quality is wasted.
To solve this problem, it is ensured that condensate system safe operation, and do not cause new energy loss simultaneously, system is entered
Row transformation.Modification scheme before is replacing high-temperature resin（With the double mode condensate polishing treatment high temperature fortune of heat supply and pure condensate
Row system, the patent No. 201310718552.1）Or install heat exchanger cooling additional.Though changing high-temperature resin can solve this problem, together
Big, operation and maintenance cost defect high that when brings one-time investment；Install heat exchanger cooling band additional and carry out new energy dissipation, increase
System heat consumption.
（Three）The content of the invention
The present invention is in order to make up the deficiencies in the prior art, there is provided a kind of simple structure, the High Back Pressure Steam Turbine Units machine stove of energy-saving safety
United condensing water temperature control system.
The present invention is achieved through the following technical solutions：
A kind of united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove, including the steam air heater in air channel, air
The upper the latter half of preheater is separately mounted in flue and air channel and positioned at the lower wind direction position of steam air heater, it is characterised in that：
The steam air heater connects condenser by steam air heater water inlet pipe with connecting for condensing water conduit, and steam air heater water inlet pipe is connected more than other
Hot water inlet pipe；Steam air heater is connected precision processing system, warm wind by steam air heater outlet pipe with the connection of precision processing system water inlet pipe
Device outlet pipe connects other remaining hot water outlet pipes.
The present invention is connected respectively by steam air heater and condenser, precision processing system, on the one hand ensures that high back pressure runs machine
The condensed water precision processing system of group safe and stable operation on the premise of not transforming, on the other hand, the heat for reclaiming condensate is used
In the air intake of heating steam air heater, the low-temperature corrosion of air preheater is prevented, realize efficient balance of the heat in system and utilize.
More excellent technical scheme of the invention is：
Steam air heater water side bypass pipe, steam air heater water side bypass are connected between the condensing water conduit and precision processing system water inlet pipe
Valve A is installed on pipe, is realized condensing water conduit, steam air heater outlet pipe and is connected with the switching of precision processing system.
Valve B is installed on the condensing water conduit, valve C is installed on steam air heater outlet pipe, be easy to implement steam air heater
Water route connection control.
Valve E is installed on described other remaining hot water water inlet pipes, valve D is installed on other remaining hot water outlet pipes, be easy to
That realizes other remaining hot waters utilizes control.
The steam air heater is water-air heat exchanger, winter steam air heater temperature of inlet air is about 5 DEG C, and outlet temperature is about
50℃；Air preheater is rotary regenerative air preheater, and the air themperature from the output of air preheater air side outlet is 280-
340℃。
The condenser is the Air-Cooling Island of Air-cooled Unit, and the condensate of condenser enters back into essence after being introduced into steam air heater cooling
Processing system, the temperature of condensate is 70-85 DEG C in condenser.
Precision processing system outlet pipe is installed on the precision processing system.
Simple structure of the present invention, it is easy to realize, the condensing water temperature for solving high back pressure thermal power plant unit is too high, precision processing system
The problem that system cannot normally run, it is ensured that unit operation safety；The present invention heats the air in steam air heater with condensed water in high temperature,
Air is preheated before air inlet preheater, realize cascaded utilization of energy；The present invention makes air in air inlet
Preheated before preheater, solved the problems, such as low-temperature corrosion of air preheater；The present invention throws than transformation precision processing system
Low, remarkable in economical benefits is provided, has promoted the high back pressure of large-scale thermal power machine group to transform.
（Four）Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the invention.
In figure, 1 condenser, 2 steam air heater water side bypass pipes, 3 valve A, 4 precision processing system water inlet pipes, 5 condensing water conduits, 6
Valve B, 7 valve C, 8 steam air heater water inlet pipes, 9 steam air heater outlet pipes, 10 steam air heaters, 11 air preheaters, 12 precision processing systems,
13 precision processing system outlet pipes, 14 other remaining hot water outlet pipes, 15 valve D, 16 valve E, 17 other remaining hot water water inlet pipes.
（Five）Specific embodiment
Accompanying drawing is a kind of specific embodiment of the invention.The embodiment includes the steam air heater 10 in air channel, air preheat
The upper the latter half of device 11 is separately mounted in flue and air channel and positioned at the lower wind direction position of steam air heater 10, the steam air heater 10
Condenser 1 is connected with connecting for condensing water conduit 5 by steam air heater water inlet pipe 8, steam air heater water inlet pipe 8 connects other remaining hot waters and enters
Water pipe 17；Steam air heater 10 is connected precision processing system 12 by steam air heater outlet pipe 9 with the connection of precision processing system water inlet pipe 4, warms up
Wind device outlet pipe 9 connects other remaining hot water outlet pipes 14；Connected between the condensing water conduit 5 and precision processing system water inlet pipe 4
There is steam air heater water side bypass pipe 2, valve A3 is installed on steam air heater water side bypass pipe 2；Valve is installed on the condensing water conduit 5
Door B6, is provided with valve C7 on steam air heater outlet pipe 9；Valve E16 is installed on described other remaining hot water water inlet pipes 17, more than other
Valve D14 is installed on hot water outlet pipe 14；The steam air heater 10 is water-air heat exchanger, and air preheater 11 is swinging
Air preheater；The condenser 1 is the Air-Cooling Island of Air-cooled Unit；Precision processing system is installed on the precision processing system 12
Water pipe 13.
The method of operation of present system device is：
When heat supply phase high back pressure runs, the valve B6 installed on condensing water conduit 5 and steam air heater water inlet pipe 8 is opened, open warm wind
The valve C7 installed on device outlet pipe 9 and precision processing system water inlet pipe 4, closes the valve installed on steam air heater water side bypass pipe 2
A3, closes the valve E16 installed on other remaining hot water water inlet pipes 17, closes the valve installed on other remaining hot water outlet pipes 14
D15.Condensate enters steam air heater 10 by condensing water conduit 5 and steam air heater water inlet pipe 8, and steam air heater outlet pipe 9 is passed through after cooling
Enter precision processing system 12 with precision processing system water inlet pipe 4.Air first passes through air channel by passing through air preheat after steam air heater 10
Device 11.
When the non-heat supply phase is run, the valve B6 installed on condensing water conduit 5 and steam air heater water inlet pipe 8 is closed, close warm wind
The valve C7 installed on device outlet pipe 9 and precision processing system water inlet pipe 4, opens the valve installed on steam air heater water side bypass pipe 2
A3, opens the valve E16 installed on other remaining hot water water inlet pipes 17, opens the valve installed on other remaining hot water outlet pipes 14
D15.Condensate by steam air heater water side bypass pipe 2 enter precision processing system 12, steam air heater 10 by other remaining hot waters heat into
Wind.
Claims (7)
1. a kind of united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove, including the steam air heater in air channel
（10）, air preheater（11）Upper the latter half be separately mounted in flue and air channel and positioned at steam air heater（10）Lower wind direction
Position, it is characterised in that：The steam air heater（10）By steam air heater water inlet pipe（8）And condensing water conduit（5）Connection connection it is solidifying
Vapour device（1）, steam air heater water inlet pipe（8）Connect other remaining hot water water inlet pipes（17）；Steam air heater（10）By steam air heater outlet pipe（9）
With precision processing system water inlet pipe（4）Connection connection precision processing system（12）, steam air heater outlet pipe（9）Other remaining hot waters are connected to go out
Water pipe（14）.
2. the united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove according to claim 1, it is characterised in that：Institute
State condensing water conduit（5）With precision processing system water inlet pipe（4）Between be connected with steam air heater water side bypass pipe（2）, steam air heater water side
Bypass pipe（2）On valve A is installed（3）.
3. the united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove according to claim 1, it is characterised in that：Institute
State condensing water conduit（5）On valve B is installed（6）, steam air heater outlet pipe（9）On valve C is installed（7）.
4. the united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove according to claim 1, it is characterised in that：Institute
State other remaining hot water water inlet pipes（17）On valve E is installed（16）, other remaining hot water outlet pipes（14）On valve D is installed
（15）.
5. the united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove according to claim 1, it is characterised in that：Institute
State steam air heater（10）It is water-air heat exchanger, air preheater（11）It is rotary regenerative air preheater.
6. the united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove according to claim 1, it is characterised in that：Institute
State condenser（1）It is the Air-Cooling Island of Air-cooled Unit.
7. the united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove according to claim 1, it is characterised in that：Institute
State precision processing system（12）On precision processing system outlet pipe is installed（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195763.XA CN106931465B (en) | 2017-03-29 | 2017-03-29 | High back pressure unit and machine furnace combined condensation water temperature control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195763.XA CN106931465B (en) | 2017-03-29 | 2017-03-29 | High back pressure unit and machine furnace combined condensation water temperature control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106931465A true CN106931465A (en) | 2017-07-07 |
| CN106931465B CN106931465B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195763.XA Active CN106931465B (en) | 2017-03-29 | 2017-03-29 | High back pressure unit and machine furnace combined condensation water temperature control method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251371Y (en) * | 2008-10-17 | 2009-06-03 | 华润电力投资有限公司 | Flue gas pre-cooling system with highly-effective water and energy conservation |
| CN101846329A (en) * | 2010-06-23 | 2010-09-29 | 魏熙臣 | Draining system for steam air heater of utility boiler |
| CN104456611A (en) * | 2014-12-05 | 2015-03-25 | 浙江省电力设计院 | Composite utilization system for waste heat of exhaust fume of boiler |
| CN204268504U (en) * | 2014-05-29 | 2015-04-15 | 华北电力大学（保定） | A kind of circulating water afterheat that utilizes is coupled the system of traditional steam air heater preheated air |
| CN204693472U (en) * | 2015-04-22 | 2015-10-07 | 郝江平 | A kind of air preheat and smoke waste heat utilization system |
| CN106439899A (en) * | 2016-08-31 | 2017-02-22 | 中国大唐集团科学技术研究院有限公司 | Air cooling unit steam turbine waste heat using system and method |
| CN206626604U (en) * | 2017-03-29 | 2017-11-10 | 山东泓奥电力科技有限公司 | The united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove |
-
2017
- 2017-03-29 CN CN201710195763.XA patent/CN106931465B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201251371Y (en) * | 2008-10-17 | 2009-06-03 | 华润电力投资有限公司 | Flue gas pre-cooling system with highly-effective water and energy conservation |
| CN101846329A (en) * | 2010-06-23 | 2010-09-29 | 魏熙臣 | Draining system for steam air heater of utility boiler |
| CN204268504U (en) * | 2014-05-29 | 2015-04-15 | 华北电力大学（保定） | A kind of circulating water afterheat that utilizes is coupled the system of traditional steam air heater preheated air |
| CN104456611A (en) * | 2014-12-05 | 2015-03-25 | 浙江省电力设计院 | Composite utilization system for waste heat of exhaust fume of boiler |
| CN204693472U (en) * | 2015-04-22 | 2015-10-07 | 郝江平 | A kind of air preheat and smoke waste heat utilization system |
| CN106439899A (en) * | 2016-08-31 | 2017-02-22 | 中国大唐集团科学技术研究院有限公司 | Air cooling unit steam turbine waste heat using system and method |
| CN206626604U (en) * | 2017-03-29 | 2017-11-10 | 山东泓奥电力科技有限公司 | The united condensing water temperature control system of High Back Pressure Steam Turbine Units machine stove |
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| CN106931465B (en) | 2023-08-11 |
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