CN106437886B - A kind of afterheat generating system - Google Patents
A kind of afterheat generating system Download PDFInfo
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- CN106437886B CN106437886B CN201610807002.0A CN201610807002A CN106437886B CN 106437886 B CN106437886 B CN 106437886B CN 201610807002 A CN201610807002 A CN 201610807002A CN 106437886 B CN106437886 B CN 106437886B
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- steam
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- venturi
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Classifications
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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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/02—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
-
- 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/02—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
- F01K7/04—Control means specially adapted therefor
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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)
Abstract
Afterheat generating system of the invention, the steam that vapour source machine generates is transported to level-one turbine by steam channel, second level turbine is converted into mechanical kinetic energy, generator converts electric energy for mechanical kinetic energy again, and steam is supplemented with second level turbine is combined by venturi-type eductors and condensed steam furnace, so that second level turbine steam pressure, flow are maintained in efficient working range, vapor (steam) temperature is reduced simultaneously, avoid high-temperature damage steam channel, turbine and generating equipment, generating efficiency is high and stablizes, steam utilization is high, economizes on resources.
Description
Technical field
The present invention relates to a kind of afterheat generating systems, are applied particularly to incinerator UTILIZATION OF VESIDUAL HEAT IN.
Background technique
Incinerator burning is big for thermally labile, especially dangerous waste burning fume amount, is liable to stick on boiler wall, deashing mistake
Boiler export temperature change leads to greatly vapor pressure, instability of flow in journey；And to prevent the generation of dioxin, waste heat boiler into
1100 DEG C of > of temperature requirement of mouth, 550 DEG C of heat boiler outlet temperature requirement >, boiler adjustable range is small；In the prior art, three
Kettleman generates steam 1Mpa, 15T/H, is only capable of effectively using steam 9T, remaining 6T emptying.Steam fluctuation range 4.5 T/H ~
7.5 T/H, steam fluctuation range is big, need to carry out pressure stabilizing to steam；And turbine expansion generator has non-linear generating efficiency, steams
Generating efficiency decaying is serious not in working range for steam flow amount, pressure.
Summary of the invention
It can be utilized the technical problem to be solved by the invention is to provide one kind and burn stove waste heat power generation, and steam flow
Stablize with pressure, the high afterheat generating system of generating efficiency.
Afterheat generating system of the invention, including vapour source machine, steam channel, turbine, generator, vapour source machine collect waste heat
It is converted into steam turbine is transported to by steam channel and be converted into mechanical kinetic energy, mechanical kinetic energy is transmitted to generator and is converted into electricity
Can, regulating valve, quick-closing valve are provided on steam channel, it is characterised in that；The turbine is divided into level-one turbine, second level turbine
Machine, the steam channel between second level turbine and vapour source machine are provided with venturi-type eductors；
The level-one turbine, second level turbine are connected on vapour source machine steam channel, and venturi-type eductors are saturating with level-one
Flat machine is in parallel；
The venturi-type eductors also pass through steam channel and are connected with condensed steam furnace；
Condensed steam furnace roof portion is connect with venturi-type eductors, is additionally provided with condensed steam air intake and condensation
The connection of water vapour machine, condensed steam furnace bottom connect boiler water supply mouth；
The second level turbine is also connected with vacuum pump；
Planetary gear reduction box is connected between the generator and turbine.
The afterheat generating system of the present embodiment fluctuates big situation for steam flow caused by the variation such as load is burned,
Pressure stabilizing is carried out to steam, and carries out classification power generation, improves generating efficiency；Flow is controlled by regulating valve, according to the size of flow
The whereabouts of steam is adjusted, and low-pressure steam is converted by venturi-type eductors and condensed steam supplement by high steam and is introduced
Second level expanding machine improves existing quantity of steam, and two stage turbine expanding machine is made to be in efficient operation section always, guarantees two stage turbine
Machine is in efficiency operation range；Two stage turbine expanding machine drives generator work, hair after passing through planetary gear reduction box speed change
Electrical power is steady, and steam utilization is high, is conducive to economize on resources.
Detailed description of the invention
Fig. 1 is the afterheat generating system schematic diagram of the embodiment of the present invention.
Specific embodiment
As shown, a kind of afterheat generating system, including vapour source machine, steam channel, turbine, generator, vapour source machine are received
Collection waste heat, which is converted into steam and is transported to turbine by steam channel, is converted into mechanical kinetic energy, and mechanical kinetic energy is transmitted to generator turn
Turn to electric energy；It is provided with regulating valve, quick-closing valve on steam channel, the steam on-off of each section of steam channel, turbine can be adjusted
It is divided into level-one turbine, second level turbine, level-one turbine, second level turbine are connected on vapour source machine steam channel, with second level
Venturi-type eductors are installed additional on the steam channel on the air intake phase side of turbine, and venturi-type eductors are in parallel with level-one turbine.
Venturi-type eductors also pass through steam channel and are connected with condensed steam furnace, because of level-one turbine, second level turbine
It is connected on vapour source machine steam channel, the steam of vapour source machine conveying pressure, flow after level-one turbine use is lossy, remains
The remaining steam flow for being transported to second level turbine cannot reach normal work and require, and generating efficiency is caused to decay；Pass through venturi
Injector and condensed steam furnace, which cooperate, supplements vapour source to second level turbine, to make up the steam of vapour source machine conveying through level-one turbine
The loss generated after machine, so that second level turbine remains within the scope of normal operating level into steam flow amount, kinetic energy conversion is steady
Fixed, generating efficiency is high.
Condensed steam furnace roof portion is connect with venturi-type eductors, provides auxiliary steam source for venturi-type eductors；It also sets up
There is condensed steam air intake to connect with condensed steam machine, condensed steam machine provides condensed water for condensed steam furnace and steams
Vapour, condensed steam furnace bottom connect boiler water supply mouth, and condensed steam is after venturi-type eductors extract steam, residue condensation
Water vapour is delivered to boiler from condensed steam furnace bottom after condensed steam furnace is cooled to condensed water, provides cooling for boiler
Water recycles, and economizes on resources.
The outlet of second level turbine is also connected with vacuum pump, auxiliary power can be provided for second level turbine, so that energy is discharged
Residual gas after amount conversion；The mechanical kinetic energy of two stage turbine expanding machine conversion is by driving hair after planetary gear reduction box speed change
Motor work, is converted into electric energy by generator.
The afterheat generating system of the present embodiment, the waste heat boiler as vapour source machine prevent the generation of dioxin, inlet temperature
1100 DEG C of >, 550 DEG C of heat boiler outlet temperature >, temperature regulating range is small；1Mpa steam shunts after waste heat boiler extraction,
All the way to the grading vapour of turbo-expander one, all the way to venturi-type eductors, from the grading vapour of venturi-type eductors turbo-expander two；
Venturi-type eductors connect the 1Mpa steam that the air intake of waste heat boiler is 550 DEG C of >, and auxiliary air intake is condensed steam furnace
180 DEG C of steam of evaporation, become 0.2Mpa steam, the condensed water after cooling is emitted into pot from condensed steam furnace bottom after mixing
Furnace feed water inlet recycles；
Design installation 6 T/H turbo-expander steam generating system of two-stage 1Mpa, generate electricity higher efficiency range: 5T~7T, simultaneously
Design 20m3 condensate evaporation tank, sensible heat in a small amount of steam and hot water of recycling drain valve discharge；Steam is expanded by the first order
Continue expansion work to the second level after acting, and by adding to second level turbine after heat in venturi-type eductors extraction condensed water
Expander acting, because second level turbo-expander acting output is much larger than the acting output of first order turbo-expander, therefore
When steam generation changes, pay the utmost attention to guarantee the turbo-expander second level in power generation higher efficiency range in logic control；Work as stream
When measuring < 5T, a grading steam control valve is closed, and the steaming of about 1T low pressure can be supplemented by venturi-type eductors into vapour, while in evaporator
Vapour, injector, which exports, to be formed 0.2Mpa about 6T steam and enters second level turbo-expander, guarantees that compound expansion machine is keeping > 5.5T
It is run within the scope of the efficient operation of flow.
Three kettleman of original production status generate steam 1Mpa, 15T/H, using steam 9T, remaining 6T emptying, and steam wave
Dynamic range 4.5 T/H~7.5 T/H；For the present embodiment in the case where auxiliary supplements steam, 1Mpa, 6T/H steam directly pass through one
Grade second level can generate electricity 680KWh electricity, and 1Mpa, 5 T/H steam, which directly pass through level-one, second level, can generate electricity 400KWh electricity, scripture
In mound after injector supplement steam, 0.21Mpa, 6 T/H steam can be formed, can be generated electricity 55KWh into compound expansion generator,
Total generated output reaches 1135 KWh.
Claims (4)
1. a kind of afterheat generating system, including vapour source machine, steam channel, turbine, generator, vapour source machine is collected waste heat and is converted into
Steam is transported to turbine by steam channel and is converted into mechanical kinetic energy, and mechanical kinetic energy is transmitted to generator and is converted into electric energy, steams
Regulating valve, quick-closing valve are provided on vapour channel, it is characterised in that；The turbine is divided into level-one turbine, second level turbine, and two
Steam channel between grade turbine and vapour source machine is provided with venturi-type eductors；The level-one turbine, second level turbine string
It is connected on vapour source machine steam channel, venturi-type eductors are in parallel with level-one turbine；The venturi-type eductors also pass through steam
Channel is connected with condensed steam furnace.
2. afterheat generating system according to claim 1, it is characterised in that: condensed steam furnace roof portion and venturi
Injector connection, condensed steam furnace roof portion is additionally provided with condensed steam air intake, condensed steam air intake and condensed water
Steam engine connection, condensed steam furnace bottom connect boiler water supply mouth.
3. afterheat generating system according to claim 1, it is characterised in that: the second level turbine is also connected with vacuum
Pump.
4. afterheat generating system according to claim 1, it is characterised in that: be connected between the generator and turbine
Planetary gear reduction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610807002.0A CN106437886B (en) | 2016-09-06 | 2016-09-06 | A kind of afterheat generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610807002.0A CN106437886B (en) | 2016-09-06 | 2016-09-06 | A kind of afterheat generating system |
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| Publication Number | Publication Date |
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| CN106437886A CN106437886A (en) | 2017-02-22 |
| CN106437886B true CN106437886B (en) | 2018-12-28 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650022B (en) * | 2009-08-21 | 2011-09-21 | 上海电力学院 | Steam turbine interstage back-heating heater cross-class connecting system |
| CN101666250B (en) * | 2009-09-25 | 2012-04-11 | 天津大学 | System for improving low-temperature heat source power generation capacity by adopting jet pump |
| EP2333256B1 (en) * | 2009-12-08 | 2013-10-16 | Alstom Technology Ltd | Power plant with CO2 capture and method to operate such power plant |
| EP2599964B1 (en) * | 2011-12-02 | 2016-04-20 | Siemens Aktiengesellschaft | Steam turbine arrangement of a three casing steam turbine |
| US20140000261A1 (en) * | 2012-06-29 | 2014-01-02 | General Electric Company | Triple expansion waste heat recovery system and method |
| CN102926825A (en) * | 2012-11-14 | 2013-02-13 | 江苏金通灵流体机械科技股份有限公司 | Quick-start steam turbine set and operation process thereof |
| CN103670626B (en) * | 2013-12-27 | 2016-03-30 | 天津大学 | Two-stage expansion jet type waste heat recovery system of internal combustion engine |
| CN203719450U (en) * | 2014-02-21 | 2014-07-16 | 程晋瑞 | Steam ejection vacuum system for condenser |
| EP2957731A1 (en) * | 2014-06-18 | 2015-12-23 | Alstom Technology Ltd | Method for increasing the power of a combined-cycle power plant, and combined-cycle power plant for conducting said method |
| CN104454053A (en) * | 2014-11-28 | 2015-03-25 | 天津大学 | Efficient ammonia water power generation system |
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