CN106224984A - A kind of soot blower vapour source apparatus utilizing cold reheat steam and high temperature reheated steam - Google Patents
A kind of soot blower vapour source apparatus utilizing cold reheat steam and high temperature reheated steam Download PDFInfo
- Publication number
- CN106224984A CN106224984A CN201610639430.7A CN201610639430A CN106224984A CN 106224984 A CN106224984 A CN 106224984A CN 201610639430 A CN201610639430 A CN 201610639430A CN 106224984 A CN106224984 A CN 106224984A
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- Prior art keywords
- steam
- low
- temperature reheater
- high temperature
- vapour source
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- 239000004071 soot Substances 0.000 title claims abstract description 40
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 238000007664 blowing Methods 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 230000008676 import Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract 1
- 230000009467 reduction Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
It is an object of the invention to provide a kind of soot blower vapour source apparatus utilizing cold reheat steam and high temperature reheated steam.Including low-temperature reheater, low-temperature reheater inlet steam, high temperature reheater, high temperature reheater outlet vapor, ejector and steam sootblower vapour source, ejector is made up of high pressure nozzle, low-pressure nozzle, hybrid chamber, hybrid chamber throat and diffuser, low-temperature reheater inlet steam flows into from high pressure nozzle as working fluid, high temperature reheater outlet vapor is entered hybrid chamber from low-pressure nozzle by injection as driving fluid, through mixing and the pressurization of ejector, the mixed vapour finally sprayed from diffuser pipe is as steam sootblower vapour source.The present invention can be according to the physical dimension of two strands of steam parameter design optimization ejectors of outlet of the import of low-temperature reheater and high temperature reheater, the parameter making mixed vapour meets the parameter request in soot blowing vapour source under various loading condictions, it is to avoid utilize final stage superheated steam as the problem expending high-quality steam during soot blowing vapour source.
Description
Technical field
The present invention relates to station boiler steam blowing technique field, be specifically related to one and utilize cold reheat steam and high temperature
The soot blower vapour source apparatus of reheated steam.
Background technology
In the running of station boiler, in order to effectively remove the dust stratification of boiler heating surface, it is ensured that heating surface cleans,
Make heating surface heat-transfer effect good, need the heating surface at boiler to arrange different types, different types of soot blower.Wherein steam
Soot blower is the one of boiler sootblower, is also most widely used a kind of soot blower pattern.Steam is blown by station boiler at present
Ash device vapour source selection, more employing finishing superheater inlet steam, also have employing reheater inlet steam and reheater outlet
Steam.But, finishing superheater outlet vapor is high temperature and high pressure steam, and vapour source dates is higher, needs by pressure and temperature reducing station
Energy is for steam sootblower, and pressure and temperature reducing standing-meeting produces irreversible restriction loss to steam, it means that high-quality is steamed
Vapour is wasted, and causes economy of power plant to lose, and the most this system there is also and regulates that the pressure reduction before and after valve is big, valve is fragile
Etc. problem.If select reheated steam as steam sootblower vapour source, the economy of unit can be significantly increased, but due to again
Hot device entrance is the steam of high pressure low temperature parameter, and outlet vapor is the steam of high-temperature low-pressure parameter, therefore, is used alone these two strands
Steam is all difficult to directly reach the parameter request in steam sootblower vapour source, and particularly when underload, reheated steam parameter is lower,
Secondly cannot meet the vapour source requirement of soot blower, when high load capacity, reheated steam also wants the pressure and temperature reducing could be as soot blower vapour
Source, however it remains restriction loss.
Ejector is a kind of device utilizing high-pressure fluid draws low pressure fluid.Working fluid and driving fluid enter mixing
In room, carry out the exchange of quality and momentum, the most also with the rising of pressure.Ejector can improve driving fluid pressure and not
Directly consuming mechanical energy, meanwhile, there is not restriction loss, this is the performance that ejector is the most basic, and it has simple in construction, without turning
Dynamic component, operate the advantages such as easy to maintenance, and to being sucked medium fluid without being strict with, be therefore widely used in the energy
The fields such as power, petrochemical industry, refrigeration and industry thermal technology.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides one and utilize cold reheat steam and high temperature reheated steam
Soot blower vapour source apparatus.
Design of the present invention is: a kind of soot blower vapour utilizing cold reheat steam and high temperature reheated steam
Source apparatus, including low-temperature reheater inlet steam 7, low-temperature reheater 8, high temperature reheater outlet vapor 9, ejector 10, high temperature
Reheater 11, soot blower vapour source 4, it is characterised in that: described ejector 10 by high pressure nozzle 12, low-pressure nozzle 13, hybrid chamber 14,
Hybrid chamber throat 15, diffuser 16 form, and described low-temperature reheater inlet steam 7 draws from high pressure nozzle 12 as working fluid
Entering, described high temperature reheater outlet vapor 9 enters hybrid chamber 14 as driving fluid from low-pressure nozzle 13 injection, through ejector 10
Mixing and pressurization after, finally from diffuser pipe 16 ejection mixed vapour as steam sootblower vapour source 4.
Described ejector 10 can be by high-pressure fluid injection low-pressure fluid and do not consumes the device of mechanical energy.High-pressure spray
Body and low-pressure fluid can obtain the steam of pressure, proper temperature upon mixing, can be by little by the structure optimizing ejector
The low-pressure steam of the big flow of high steam injection of flow, thus decrease the consumption of high-quality steam, improve unit economy.
Compared to the prior art, the invention have the advantages that
1, a kind of soot blower vapour source apparatus utilizing cold reheat steam and high temperature reheated steam that the present invention provides, passes through
The ejector action of ejector 10 is by low-temperature reheater inlet steam 7 and high temperature reheater outlet vapor 9 mix homogeneously, so that mixing
Steam parameter after conjunction meets the vapour source dates requirement of steam sootblower.
2, as blowing after the high-quality steam of finishing superheater entrance is passed through the water saving measures such as pressure and temperature reducing by prior art
The vapour source of ash device, the pressure and temperature of high-quality steam is the highest, and the steam parameter that soot blower requires is relatively low, the pressure before and after throttling
Difference is relatively big, therefore can produce the biggest irreversible restriction loss.The one that the present invention provides utilizes cold reheat steam and high temperature
The soot blower vapour source apparatus of reheated steam, it is to avoid the restriction loss that in prior art, high-quality steam produces because of pressure and temperature reducing,
It is effectively increased the economy of unit.
3, prior art due to the pressure reduction before and after pressure and temperature reducing station relatively big, pressure reduction amplitude before and after regulation valve reach 15～
16MPa, causes serious cavitation to regulation valve valve cage, spool, washes away, stop soot blower owing to needing in soot blowing process constantly to throw, open
Stop operating frequency higher, the regulation valve at pressure and temperature reducing station is caused severe attrition.The one that the present invention provides utilizes cold reheat
The soot blower vapour source apparatus of steam and high temperature reheated steam, by ejector by low-temperature reheater inlet steam 7 and high temperature reheating
Device outlet vapor 9 mixes, and ejector is a kind of energy conversion device, because of throttle effect, equipment will not be produced erosion and make
With, thus significantly reduce the maintenance cost of equipment.
4, the injector device that the present invention provides uses the low-grade steaming such as low-temperature reheater import and high temperature reheater outlet
Vapour is as power source, it is possible to realize the cascade utilization of energy, has significant effects of energy saving and emission reduction, and prior art uses desuperheat
The equipment investment of pressure-reducing station is relatively big, the simple in construction of ejector of the present invention, low cost, easily installation and maintenance.
Accompanying drawing explanation
Fig. 1 is the system schematic in prior art soot blower vapour source；
Fig. 2 is that the system of a kind of soot blower vapour source apparatus utilizing cold reheat steam and high temperature reheated steam of the present invention is shown
It is intended to；
Fig. 3 is the structure chart of ejector of the present invention.
In figure, 1-finishing superheater inlet steam；2-finishing superheater；3-pressure and temperature reducing station；4-soot blower vapour source；5-blows
Ash device；6-boiler；7-low-temperature reheater inlet steam；8-low-temperature reheater；9-high temperature reheater outlet vapor；10-ejector；
11-high temperature reheater；12-high pressure nozzle；13-low-pressure nozzle；14-hybrid chamber；15-hybrid chamber throat；16-diffuser.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, as a example by certain subcritical 660MW unit, prior art uses the high-quality of finishing superheater 2 entrance
Steam 1 is as soot blower vapour source 4, but the pressure of finishing superheater inlet steam 1, temperature parameter (17.5MPa, 465 DEG C) are all
The highest, and the steam parameter (1.5MPa, 400 DEG C) that soot blower requires is relatively low, therefore, by the throttling action at pressure and temperature reducing station 3
Reducing steam parameter, thus reach the requirement in soot blower vapour source 4, the steam after pressure and temperature reducing is passed through soot blower 5, passes through soot blower
5 remove the dust stratification on boiler heating surface, and the pressure reduction before and after pressure and temperature reducing is up to 16MPa, it is evident that what prior art used blows
There is the biggest restriction loss in ash device vapour source.
As shown in Figures 2 and 3, a kind of soot blower utilizing cold reheat steam and high temperature reheated steam that the present invention provides
Vapour source apparatus, including low-temperature reheater 8, low-temperature reheater inlet steam 7, high temperature reheater outlet vapor 9, ejector 10, height
Temperature reheater 11, soot blower vapour source 4, it is characterised in that: described ejector 10 is by high pressure nozzle 12, low-pressure nozzle 13, hybrid chamber
14, hybrid chamber throat 15, diffuser 16 form, described low-temperature reheater inlet steam 7 as working fluid from high pressure nozzle 12
Introducing, described high temperature reheater outlet vapor 9 enters hybrid chamber 14, through ejector as driving fluid from low-pressure nozzle 13 injection
After the mixing of 10 and pressurization, the mixed vapour finally sprayed from diffuser pipe 16 is as steam sootblower vapour source 4.
As it is shown on figure 3, the emitter construction figure that the present invention provides, the operation principle of ejector 10 is:
1, low-temperature reheater inlet steam 7 flows into high pressure nozzle 12 and carries out adiabatic expansion, heat energy and the potential energy of steam is turned
Turning to kinetic energy, constantly increase along with the pressure of steam constantly reduces flow velocity, the outlet pressure at high pressure nozzle 12 reaches minimum
Value, now, the pressure of working fluid 7 is less than the pressure of driving fluid 9, and therefore, high temperature reheater outlet vapor 9 is sprayed by low pressure
Mouth 13 is inhaled into hybrid chamber 14.
2, working fluid 7 and driving fluid 9 are vigorously mixed in hybrid chamber 14, it is achieved momentum and energy exchange, mixed flow
The pressure and temperature of body reaches uniform state in the exit of hybrid chamber throat 15.
3, the uniform fluid-mixing of pressure and temperature continues adiabatic compression in diffuser 16, and the kinetic energy of fluid is converted into gesture
Energy and heat energy, therefore the pressure and temperature of fluid-mixing finally gives to meet after the boosting, temperature-rise period of diffuser 16 and blows
The mixed vapour of ash device vapour source 4 parameter request.
The vapor (steam) temperature parameter (1.55MPa, 295 DEG C) of low-temperature reheater entrance is less than the parameter in soot blower vapour source 4
(1.5MPa, 400 DEG C) requirement, and for the steam parameter (1.45MPa, 549 DEG C) of high temperature reheater outlet, at unit underload
During operation, the pressure of high temperature reheater outlet vapor 9 is less than the pressure requirements in soot blower vapour source 4, and coal-burning power plant is as peak regulation
Unit, often in underrun state.As can be seen here, it is used alone these two strands of steam to be all difficult to directly reach steam soot blowing
The parameter request in device vapour source, therefore, for low-temperature reheater inlet steam pressure height, temperature is low and high temperature reheater outlet is steamed
The feature that steam pressure is low, temperature is high, can reach the requirement in soot blower vapour source by the mixing of ejector of the present invention, it is to avoid uses
Finishing superheater inlet steam 1, as the restriction loss produced during vapour source, takes full advantage of low-temperature reheater import and height simultaneously
The low-grade steam of temperature reheater outlet, has significant effects of energy saving and emission reduction.
The present invention chooses low-temperature reheater inlet steam 7 and flows into from high pressure nozzle 12 as working fluid, high temperature reheater
Outlet vapor 9 enters hybrid chamber 14 as driving fluid by low-pressure nozzle 13 injection, by optimizing the structure of design ejector 10
Parameter, makes mixed steam pressure and temperature all reach the parameter request in soot blower vapour source 4.Ejector of the present invention is in reality
In running respond well, reached intended purpose.
Claims (2)
1. a kind of soot blower vapour source apparatus utilizing cold reheat steam and high temperature reheated steam that the present invention provides, including soot blowing
Device vapour source (4), soot blower (5), boiler (6), low-temperature reheater inlet steam (7), low-temperature reheater (8), high temperature reheater go out
Mouth steam (9), ejector (10), high temperature reheater (11).
A kind of soot blower vapour source apparatus utilizing cold reheat steam and high temperature reheated steam the most according to claim 1,
It is characterized in that: described ejector (10) is by high pressure nozzle (12), low-pressure nozzle (13), hybrid chamber (14), hybrid chamber throat
(15) forming with diffuser pipe (16), described low-temperature reheater inlet steam (7) flows into from high pressure nozzle (12) as working fluid,
Described high temperature reheater outlet vapor (9) is entered hybrid chamber (14) from low-pressure nozzle (13) by injection as driving fluid, passes through
A series of mixing of ejector (10) and pressurization, the mixed vapour finally sprayed from diffuser (16) is as steam soot blowing
Device vapour source (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610639430.7A CN106224984B (en) | 2016-08-06 | 2016-08-06 | Soot blower steam source device utilizing low-temperature reheat steam and high-temperature reheat steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610639430.7A CN106224984B (en) | 2016-08-06 | 2016-08-06 | Soot blower steam source device utilizing low-temperature reheat steam and high-temperature reheat steam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224984A true CN106224984A (en) | 2016-12-14 |
| CN106224984B CN106224984B (en) | 2024-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610639430.7A Active CN106224984B (en) | 2016-08-06 | 2016-08-06 | Soot blower steam source device utilizing low-temperature reheat steam and high-temperature reheat steam |
Country Status (1)
| Country | Link |
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| CN (1) | CN106224984B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093964U (en) * | 1991-03-30 | 1992-01-22 | 辽宁省节能技术服务中心 | Heat-pump-type pressure reducer and attemperator |
| JP2001082729A (en) * | 1999-09-16 | 2001-03-30 | Babcock Hitachi Kk | Steam type soot blower control device |
| CN101672545A (en) * | 2008-09-09 | 2010-03-17 | 罗耀文 | Cooling and heating device with vortex tube |
| CN203286577U (en) * | 2013-04-24 | 2013-11-13 | 河北大唐国际丰润热电有限责任公司 | Transformed device for power station boiler soot blowing system |
| CN203771428U (en) * | 2013-12-06 | 2014-08-13 | 中国大唐集团科学技术研究院有限公司 | Ultra supercritical unit steam soot blowing system |
| CN204063067U (en) * | 2014-08-11 | 2014-12-31 | 大唐彬长发电有限责任公司 | A kind of soot blower system |
| CN204943516U (en) * | 2015-09-10 | 2016-01-06 | 中国神华能源股份有限公司 | For soot blower system and the boiler of power plant of boiler of power plant |
| CN208058875U (en) * | 2016-08-06 | 2018-11-06 | 西安交通大学 | A kind of soot blower vapour source device mixing reheated steam by injector |
-
2016
- 2016-08-06 CN CN201610639430.7A patent/CN106224984B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093964U (en) * | 1991-03-30 | 1992-01-22 | 辽宁省节能技术服务中心 | Heat-pump-type pressure reducer and attemperator |
| JP2001082729A (en) * | 1999-09-16 | 2001-03-30 | Babcock Hitachi Kk | Steam type soot blower control device |
| CN101672545A (en) * | 2008-09-09 | 2010-03-17 | 罗耀文 | Cooling and heating device with vortex tube |
| CN203286577U (en) * | 2013-04-24 | 2013-11-13 | 河北大唐国际丰润热电有限责任公司 | Transformed device for power station boiler soot blowing system |
| CN203771428U (en) * | 2013-12-06 | 2014-08-13 | 中国大唐集团科学技术研究院有限公司 | Ultra supercritical unit steam soot blowing system |
| CN204063067U (en) * | 2014-08-11 | 2014-12-31 | 大唐彬长发电有限责任公司 | A kind of soot blower system |
| CN204943516U (en) * | 2015-09-10 | 2016-01-06 | 中国神华能源股份有限公司 | For soot blower system and the boiler of power plant of boiler of power plant |
| CN208058875U (en) * | 2016-08-06 | 2018-11-06 | 西安交通大学 | A kind of soot blower vapour source device mixing reheated steam by injector |
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| Publication number | Publication date |
|---|---|
| CN106224984B (en) | 2024-03-22 |
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