CN109469523A - A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat - Google Patents
A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat Download PDFInfo
- Publication number
- CN109469523A CN109469523A CN201811647742.8A CN201811647742A CN109469523A CN 109469523 A CN109469523 A CN 109469523A CN 201811647742 A CN201811647742 A CN 201811647742A CN 109469523 A CN109469523 A CN 109469523A
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- Prior art keywords
- steam
- small
- heat
- condensing
- air
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- 239000002918 waste heat Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000003546 flue gas Substances 0.000 claims abstract description 3
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 208000011580 syndromic disease Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- 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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- 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
-
- 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
- F01K21/00—Steam engine plants not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of systems for entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat, including small machine steam exhaust condenser, its entrance connects small turbine, the shaft of small turbine connects air-introduced machine, its gas source derives from external extracted steam from turbine, small machine steam exhaust condenser is connected with for the circulation for its steam cooling, while its outlet is connected to host therrmodynamic system；Heat exchanger is flow to for the thermal cycle moisture two-way after the cooling of small machine steam exhaust condenser, its heat carried is respectively the wind heating of pressure fan and primary air fan, wind after heating enters air preheater, is beaten again by water circulating pump after flowing through the two-way heat recirculated water merging of heat exchanger to small machine steam exhaust condenser；Wind after external flue gas and heating enters air preheater jointly, then successively enters chimney after electric precipitation and air-introduced machine.Realize condensing-type small turbine driving vapour source energy all of, thoroughly eliminate condensing-type small turbine cold source energy.
Description
[technical field]
It is especially a kind of to utilize condensing-type small steam turbine exhaust steam waste-heat the invention belongs to energy saving for power plants consumption reduction field
Enter the system of furnace fresh air.
[background technique]
The small turbine for driving air-introduced machine, can be divided into back pressure type or pure condensate formula.Traditional pure condensate formula small turbine cold end system
System is similar to wet type cooling unit cold end system, is mainly made of circulation, condensate system and pumped vacuum systems, there are larger
Cold source energy.
[summary of the invention]
It is an object of the invention to overcome the above-mentioned prior art, a kind of utilization condensing-type small steam turbine exhaust steam is provided
The system that waste-heat enters furnace fresh air.Using water as heat carrier, closed circulation system is set, small steam turbine exhaust steam waste heat is passed to
Boiler primary and secondary air improves into furnace wind-warm syndrome, improves unit overall operation economy.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat, including small machine steam exhaust condenser,
Its entrance connects small turbine, and the shaft of small turbine connects air-introduced machine, and gas source derives from external extracted steam from turbine, and small machine is weary
Vapour condenser is connected with for the circulation for its steam cooling, while its outlet is connected to host therrmodynamic system；Wherein
Circulation is that is, flow to heat exchanger for the thermal cycle moisture two-way after the cooling of small machine steam exhaust condenser, the heat carried divides
Not Wei pressure fan and primary air fan wind heating, the wind after heating enters air preheater, flows through the two-way thermal cycle of heat exchanger
It is beaten again by water circulating pump after being hydrated simultaneously to small machine steam exhaust condenser；Wind after external flue gas and heating enters air preheat jointly
Device, then successively enter chimney after electric precipitation and air-introduced machine.
A further improvement of the present invention lies in that:
Clutch is connected between the shaft and air-introduced machine of small turbine.
Condensed water is back to host therrmodynamic system after the small boosted pump pressurization of machine steam exhaust condenser.
The vacuum pump to extract incondensable gas out is provided on small machine steam exhaust condenser.
Heat exchanger is one of bundled tube or plate type heat exchanger.
Circulating cooling make-up water case is also connected between heat exchanger and water circulating pump on pipeline, and is provided for circulating cooling make-up water case
The circulating cooling make-up water of power pumps.
Matched pipeline valve is provided at water circulating pump and circulating cooling make-up water pump.
Compared with prior art, the invention has the following advantages:
The condensing-type small turbine of air-introduced machine is driven in the present invention, steam discharge is in small machine steam exhaust condenser by circulating cooling
Water condensation, recirculated cooling water enter after absorbing heat in small machine steam exhaust condenser and are arranged in First air under the driving of water circulating pump
The heat exchanger of machine and pressure fan exit, while primary and secondary air is heated, small machine steam exhaust condenser is back to after circulating hot water heat release
In continue condense condensing-type small steam turbine exhaust steam, complete a closed cycle.By closed circle water system, make the small vapour of condensing-type
Turbine discharge waste-heat enters primary, the Secondary Air of boiler, improve realized into furnace wind-warm syndrome driving air-introduced machine condensing-type it is small
Steam turbine vapour source energy all of, reduce or deactivated unit original steam air heater heat steam, improve unit economy, thoroughly
The cold source energy of condensing-type small turbine is eliminated, and reduces the vapour amount for even deactivating main steam turbine grade steam extraction heating warm wind.
[Detailed description of the invention]
Fig. 1 is overall structure diagram of the invention.
Wherein: 1- air preheater；2- electric precipitation；3- air-introduced machine；4- chimney；5- heat exchanger；6- pressure fan；7- First air
Machine；8- small turbine；The small machine steam exhaust condenser of 9-；10- clutch；11- booster；12- vacuum pump；13- water circulating pump.
[specific embodiment]
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, the embodiment being not all of, and it is not intended to limit range disclosed by the invention.In addition, with
In lower explanation, descriptions of well-known structures and technologies are omitted, obscures concept disclosed by the invention to avoid unnecessary.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment should fall within the scope of the present invention.
The various structural schematic diagrams for disclosing embodiment according to the present invention are shown in the attached drawings.These figures are not in proportion
It draws, wherein some details are magnified for the purpose of clear expression, and some details may be omitted.As shown in the figure
The shape in various regions, layer and relative size, the positional relationship between them out is merely exemplary, in practice may be due to
Manufacturing tolerance or technical restriction and be deviated, and those skilled in the art may be additionally designed as required have not
Similar shape, size, the regions/layers of relative position.
In context disclosed by the invention, when one layer/element is referred to as located at another layer/element "upper", the layer/element
Can may exist intermediate layer/element on another layer/element or between them.In addition, if in a kind of court
One layer/element is located at another layer/element "upper" in, then when turn towards when, the layer/element can be located at another layer/
Element "lower".
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Fig. 1, the present invention includes small machine steam exhaust condenser 9, and the cold side of small machine steam exhaust condenser 9 connects circulation,
Hot side entrance connects condensing-type small turbine 8, and outlet is connected to host therrmodynamic system, the shaft of condensing-type small turbine 8 by from
Clutch 10 is connected with the shaft of boiler induced-draft fan 3；Circulation includes being set to primary air fan 7, the outlet of pressure fan 6 and sky
Two heat exchangers 5 between air preheater 1 on air duct, cold side of the hot side entrance of heat exchanger 5 with small machine steam exhaust condenser 9 go out
Mouth is connected, and hot side outlet is connected to the cold side input port of small machine steam exhaust condenser 9 by water circulating pump 13.Air preheater 1
Outlet is sequentially connected electric precipitator 2, boiler induced-draft fan 3 and chimney 4.It is connected on small machine steam exhaust condenser 8 for extracting small machine out
The vacuum pump 12 of incondensable gas in steam exhaust condenser 9.The cold side outlet port of small machine steam exhaust condenser 8 is connected to by booster 14
Host therrmodynamic system.Circulating cooling make-up water case 14 is also connected in circulation, circulating cooling make-up water case 14 is connected by small pump 15
It is connected to the inlet of water circulating pump 13, and the exit of small pump 15 and water circulating pump 13 is provided with valve.
The present invention utilizes the small steamer of condensing-type as heat carrier by one closed circle water system of setting, the recirculated water
The heating of machine exhausted spare heat enters primary, the Secondary Air of boiler, improves into furnace wind-warm syndrome.Circulating cooling make-up water case and moisturizing are set simultaneously
Pump and matched pipeline valve, to maintain circulating water flow to stablize.
The system that the present invention enters furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat, the course of work and principle are such as
Under:
Boiler induced-draft fan 3 is driven by condensing-type small turbine 8, is connected between the two by clutch 10, the small vapour of condensing-type
Turbine vapour source is provided by main steam turbine grade steam extraction, and steam enters small machine steam exhaust condenser 9 after the acting of condensing-type small turbine 8
Condensation, vacuum pump 12 extract the incondensable gas in small machine steam exhaust condenser 9 out, and 8 steam discharge of condensing-type small turbine is condensed solidifying
Host therrmodynamic system is back to after bearing water boosted 11 pressurization of pump.Small 9 recirculated cooling water of machine steam exhaust condenser is by water circulating pump 13
Driving, in small machine steam exhaust condenser 9 absorb heat after enter primary air fan 7 is set, pressure fan 6 is exported to air preheater 1
In heat exchanger 5, primary and secondary air is heated, wherein heat exchanger 5 is bundled tube or plate type heat exchanger, is flowed back after circulating hot water heat release
To condensation 8 steam discharge of condensing-type small turbine is continued in small machine steam exhaust condenser 9, a closed cycle is completed.Circulation is set simultaneously
Water water supply tank 14 and small pump 15 and matched pipeline valve, to maintain circulating water flow to stablize
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (7)
1. a kind of system for entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat, which is characterized in that weary including small machine
Vapour condenser (9), entrance connect small turbine (8), and the shaft of small turbine (8) connects air-introduced machine (3), and gas source derives from
External extracted steam from turbine, small machine steam exhaust condenser (9) are connected with for the circulation for its steam cooling, while it is exported
It is connected to host therrmodynamic system；Wherein circulation is that is, for the thermal cycle moisture two-way after the cooling of small machine steam exhaust condenser (9)
It flow to heat exchanger (5), the heat carried is respectively the wind heating of pressure fan (6) and primary air fan (7), and the wind after heating enters
Air preheater (1) is beaten again by water circulating pump (13) to small machine steam exhaust after flowing through the two-way heat recirculated water merging of heat exchanger (5)
Condenser (9)；Wind after external flue gas and heating enters air preheater (1) jointly, then successively passes through electric precipitation (2) and air inducing
Machine (3) enters chimney (4) afterwards.
2. entering the system of furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat as described in claim 1, which is characterized in that
Clutch (10) are connected between the shaft and air-introduced machine (3) of small turbine (8).
3. entering the system of furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat as claimed in claim 1 or 2, feature exists
In condensed water is back to host therrmodynamic system after boosted pump (11) pressurization of small machine steam exhaust condenser (9).
4. entering the system of furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat as claimed in claim 3, which is characterized in that
The vacuum pump (12) to extract incondensable gas out is provided on small machine steam exhaust condenser (9).
5. entering the system of furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat as claimed in claim 4, which is characterized in that
Heat exchanger (5) is one of bundled tube or plate type heat exchanger.
6. entering the system of furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat as claimed in claim 5, which is characterized in that
It is also connected with circulating cooling make-up water case (14) on pipeline between heat exchanger (5) and water circulating pump (13), and is circulating cooling make-up water case
(14) circulating cooling make-up water for providing power pumps (15).
7. entering the system of furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat as claimed in claim 6, which is characterized in that
Matched pipeline valve is provided at water circulating pump (13) and circulating cooling make-up water pump (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811647742.8A CN109469523A (en) | 2018-12-29 | 2018-12-29 | A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811647742.8A CN109469523A (en) | 2018-12-29 | 2018-12-29 | A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat |
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| Publication Number | Publication Date |
|---|---|
| CN109469523A true CN109469523A (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811647742.8A Pending CN109469523A (en) | 2018-12-29 | 2018-12-29 | A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963374A (en) * | 2021-04-08 | 2021-06-15 | 西安热工研究院有限公司 | Double-fed system-based boiler blower system of wet cooling unit |
| CN113090541A (en) * | 2021-04-08 | 2021-07-09 | 西安热工研究院有限公司 | Indirect air cooling unit slurry circulating pump system based on double-fed system |
| CN113107879A (en) * | 2021-04-08 | 2021-07-13 | 西安热工研究院有限公司 | Double-fed system-based primary fan system of wet cooling unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948240A (en) * | 2015-06-01 | 2015-09-30 | 宋子琛 | Exhaust steam waste heat recycling system for small steam turbine of induced draft fan through circulating water based on steam turbine driving |
| CN105889897A (en) * | 2016-01-29 | 2016-08-24 | 中国电力工程顾问集团西北电力设计院有限公司 | Comprehensive recycling system and method of waste heat in thermal power plant |
| CN209308765U (en) * | 2018-12-29 | 2019-08-27 | 西安西热节能技术有限公司 | A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat |
-
2018
- 2018-12-29 CN CN201811647742.8A patent/CN109469523A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948240A (en) * | 2015-06-01 | 2015-09-30 | 宋子琛 | Exhaust steam waste heat recycling system for small steam turbine of induced draft fan through circulating water based on steam turbine driving |
| CN105889897A (en) * | 2016-01-29 | 2016-08-24 | 中国电力工程顾问集团西北电力设计院有限公司 | Comprehensive recycling system and method of waste heat in thermal power plant |
| CN209308765U (en) * | 2018-12-29 | 2019-08-27 | 西安西热节能技术有限公司 | A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963374A (en) * | 2021-04-08 | 2021-06-15 | 西安热工研究院有限公司 | Double-fed system-based boiler blower system of wet cooling unit |
| CN113090541A (en) * | 2021-04-08 | 2021-07-09 | 西安热工研究院有限公司 | Indirect air cooling unit slurry circulating pump system based on double-fed system |
| CN113107879A (en) * | 2021-04-08 | 2021-07-13 | 西安热工研究院有限公司 | Double-fed system-based primary fan system of wet cooling unit |
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