CN108426247A - The fuel nozzle cooling structure of heat-accumulation combustor - Google Patents
The fuel nozzle cooling structure of heat-accumulation combustor Download PDFInfo
- Publication number
- CN108426247A CN108426247A CN201711212217.9A CN201711212217A CN108426247A CN 108426247 A CN108426247 A CN 108426247A CN 201711212217 A CN201711212217 A CN 201711212217A CN 108426247 A CN108426247 A CN 108426247A
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- Prior art keywords
- exhaust
- fuel nozzle
- heat
- air
- mode
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/02—Disposition of air supply not passing through burner
- F23C7/06—Disposition of air supply not passing through burner for heating the incoming air
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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
- F23L15/02—Arrangements of regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2209/00—Safety arrangements
-
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Gas Burners (AREA)
- Air Supply (AREA)
Abstract
The present invention provides the fuel nozzle cooling structure of heat-accumulation combustor, it is by using the exhaust blower being exhausted in the case where being vented operation mode, the required cost of equipment of cooling of fuel nozzle and required installation space can be cut down, and the arrangement of piping etc. is also simple.Exhaust mode and combustion mode is alternately repeated in heat-accumulation combustor, and the fuel nozzle cooling structure of heat-accumulation combustor has：The fuel nozzle of hollow cylinder shape, is set to inside burner body, and the fuel for mixing to generate flame with burning air is sprayed from its front end；Cooling is managed, and is arranged in a manner of the outside for surrounding fuel nozzle, and has the interconnecting part for being connected to exhaust system and the opening portion to atmosphere opening；And connecting tube, interconnecting part is connect with exhaust system, by the exhaust sucking action of the exhaust system via connecting tube, the air to be circulated towards interconnecting part using opening cools down fuel nozzle.
Description
Technical field
The present invention relates to the fuel nozzle cooling structures of heat-accumulation combustor, are arranged by using in the case where being vented operation mode
The exhaust blower of gas can cut down the required cost of equipment of cooling of fuel nozzle and required installation space, and be piped
Deng arrangement it is also simple.
Background technology
The known various stoves (referring to patent document 1) using heat-accumulation combustor, at this time, it is also known that heat-accumulation combustor is carried out
Cooling structure (with reference to patent document 2 and 3).Patent document 1 " industrial furnace, industrial furnace energy-saving operation method with
And the remodeling method of industrial furnace " be configured to have：Combustion chamber is connect by exhaust pipe with chimney；Air-breathing open and close valve, by making
The air-breathing open and close valve is open and extraneous gas (ATM) is introduced into exhaust pipe；And impeller, and as generator
(generator) the suction blower connection functioned, and by being introduced from open air-breathing open and close valve and in exhaust pipe
The extraneous gas of middle flowing and rotate to generate electricity.In patent document 1, it is handed over for a pair of heat-accumulation combustor with two
It is operated for the burning operating and exhaust for switching them.
" the high temperature air low-NOx combustor " of patent document 2 is configured in the front end of the fuel nozzle of injection fuel
In being equipped with deflector (Baffle) with being externally embedded to shape, and the secondary air supply of slit-shaped is formed in the periphery of the deflector
Hole, fuel nozzle are configured to inner peripheral portion being set as fuel passage and peripheral part are set as to the dual pipe of path of cool air, water conservancy diversion
Plate exists in the squit hole for being provided centrally with fuel and cooling air, and in the peripheral side of the squit hole from entrance towards outlet
Multiple primary air supply holes with 30~50 ° of angle are provided in the face of same pitch diameter, also, in above-mentioned ejection
The outlet of hole and primary air supply hole is formed with the ejection port portion of fuel, cooling air, primary air.In patent document 2
In burner, it will be released into stove for the air of the cooling of fuel nozzle.
" cooling device of heat-storage type burner fuel nozzle tube " of patent document 3 is released with will not import air into stove
And be only used for the cooling of cooling air pipe, and advance, advance it is reciprocal in cooled down, to be effectively prevented cooling sky
Tracheae is superheated to project, and the dual pipe being made of inner and outer tubes is equipped in the periphery of fuel nozzle tube, is sealed using lid
Close the front end opening of outer tube and fuel nozzle tube, and be provided with by between outer tube and inner tube outboard channel and inner tube and combustion
Expect the cooling air pipe that the inboard channel between blast tube is connected to via lid and is constituted.In patent document 3, in order not to using
It is released into stove in cooling importing air and air will be imported and be sent to air cooled tube, need to be equipped with air blower.
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2016-133255 bulletins
Patent document 2：Japanese Unexamined Patent Publication 10-185128 bulletins
Patent document 3：Japanese Unexamined Patent Publication 2001-182915 bulletins
Invention content
Problems to be solved by the invention
The furnace atmosphere heated preferably by heat-accumulation combustor does not change and is homogeneous, is based on this point, is fired as accumulation of heat
The cooling structure for the fuel nozzle that burner has is, it is preferable to use will not import pair for the patent document 3 that air is released into stove
Pipe structure again.
But patent document 3 supplies no any disclosure for that how will import air to air cooled tube.Usually recognize
Newly to set or adding air blower, supplied from the air blower to air supply pipe and import air.When newly setting air blower etc., exist
It generates thus comprising the cost of equipment including piping, while being also required to ensure the project of installation space.
The present invention is the invention completed in view of above-mentioned previous project, and its purpose is to provide a kind of heat-accumulation combustors
Fuel nozzle cooling structure can cut down fuel by using the exhaust blower being exhausted in the case where being vented operation mode
The required cost of equipment of cooling of nozzle and required installation space, and the arrangement of piping etc. is also simple.
Solution for solving the problem
In the fuel nozzle cooling structure of the heat-accumulation combustor of the present invention, the heat-accumulation combustor is alternately repeated
Exhaust mode and combustion mode make to attract using the exhaust of the exhaust system with exhaust blower in the exhaust mode
Effect exhaust out of the burner of burner body attracts stove is circulated to heat storage unit to put aside waste heat, in the combustion mode
In, the flame for the burning air generation heated from being circulated to the heat storage unit is sprayed from the burner of the burner body into stove
Go out, which is characterized in that the fuel nozzle cooling structure of the heat-accumulation combustor has：The fuel nozzle of hollow simplified shape, sets
It is placed in inside the burner body, and sprays the fuel for mixing to generate flame with burning air from its front end；It is cooling
With pipe, it is arranged in a manner of surrounding the outside of the fuel nozzle, and with the company for being connected to the exhaust system
Logical portion and the opening portion to atmosphere opening；And connecting tube, the interconnecting part is connect with the exhaust system, by described
The exhaust sucking action via the connecting tube of exhaust system is big using being circulated towards the interconnecting part by the opening portion
Gas cools down the fuel nozzle.
In addition, in the fuel nozzle cooling structure of the heat-accumulation combustor of the present invention, the heat-accumulation combustor is alternately anti-
Pattern and combustion mode are exhausted again, in the exhaust mode, the exhaust system with exhaust blower is opened and closed
Air bleeding valve open and the steam supply valve that is opened and closed of air supply system with gas supply air blower closed, make through the exhaust system
The exhaust sucking action of system is vented out of the burner of burner body attracts stove and is circulated to heat storage unit to put aside waste heat, and passes through
It is discharged from the air bleeding valve to the exhaust system, in the combustion mode, the exhaust valve closure and steam supply valve opening make to lead to
The gas supply for crossing the air supply system acts on the combustion air flow supplied to the burner body and passes to the heat storage unit and heated, and by
The flame that burning air after heating generates is sprayed from the burner of the burner body into stove, which is characterized in that the accumulation of heat
The fuel nozzle cooling structure of burner has：The fuel nozzle of hollow simplified shape, is set to inside the burner body,
And the fuel for mixing to generate flame with burning air is sprayed from its front end；Cooling is managed, and is sprayed with surrounding the fuel
The mode of the outside of mouth is arranged, and has the interconnecting part for being connected to the exhaust system and the opening to atmosphere opening
Portion；And connecting tube, in the centre position of the heat storage unit and the air bleeding valve by the interconnecting part and the exhaust system
Connection, when in exhaust mode, by the exhaust sucking action via the connecting tube of the exhaust system, using passing through
The opening portion cools down the fuel nozzle towards the air that the interconnecting part circulates, and when in combustion mode, leads to
The gas supply effect for crossing the air supply system, is opened by the interconnecting part towards this using in the heat storage unit detour and via the connecting tube
The burning air of oral area circulation cools down the fuel nozzle.
The fuel nozzle cooling structure of the heat-accumulation combustor is characterized in that, the interconnecting part of the cooling pipe with
And the opening portion is formed in the base end part side with fuel nozzle front end opposite side, the cooling has with pipe：The
One flow path surrounds the periphery of the fuel nozzle, is formed along its length from front end side to base end part side, and with it is described
Interconnecting part is connected to；Second flow path surrounds the periphery of the first flow path, and the length direction along the fuel nozzle is from front end side
Formation is connected to base end part side, and with the opening portion；And connection flow path, the fuel nozzle front end side by institute
First flow path is stated to be connected to the second flow path.
The fuel nozzle cooling structure of the heat-accumulation combustor is characterized in that the fuel nozzle of the heat-accumulation combustor is cold
But structure has a pair heat-accumulation combustor that another party is operated with exhaust mode when a side is in combustion mode, these storages
The exhaust system of heat combustor is converged in fluidic junction each other, and in the downstream of the fluidic junction equipped with the single exhaust
Air blower.
Invention effect
In the fuel nozzle cooling structure of the heat-accumulation combustor of the present invention, carried out by using in the case where being vented operation mode
The exhaust blower of exhaust can cut down the required cost of equipment of cooling of fuel nozzle and required installation space, and
Also it can simplify the arrangement of piping etc..
Description of the drawings
Fig. 1 is the structure chart of the first embodiment for the fuel nozzle cooling structure for showing the heat-accumulation combustor of the present invention.
Fig. 2 is the structure chart of the second embodiment for the fuel nozzle cooling structure for showing the heat-accumulation combustor of the present invention.
Reference sign
1L, 1R heat-accumulation combustor；2L, 2R burner；3L, 3R burner body；The other end of 3a burner bodies；4L、4R
Heat storage unit；One end of 4a heat storage units；The other end of 4b heat storage units；5 stoves；6L, 6R fuel nozzle；It opens the front end of 6a fuel nozzles
Mouthful；The cardinal extremity of 6b fuel nozzles；8L, 8R cooling are managed；9L, 9R fuel open and close valve；10 fuel feed systems；11 gas supply air blast
Machine；12L, 12R steam supply valve；13 air supply systems；13a burning air supply pipes；13b burning air fluidic junctions；13c burning air supplies
To supervisor；14 exhaust blowers；15L, 15R air bleeding valve；16 exhaust systems；16a exhaust pipes；16b is vented fluidic junction；16c is vented
Supervisor；17L, 17R connecting tube；19 inner tubes；19a Closed end plates；20 outer tubes；The first Seal end plates of 20a；The second Seal end plates of 20b；
21 opening portions；22 interconnecting parts；23 first flow path；24 second flow paths；25 connection flow paths；26L, 26R connecting tube；E is vented；F flames.
Specific implementation mode
Hereinafter, being carried out to the preferred embodiment of the fuel nozzle cooling structure of the heat-accumulation combustor of the present invention with reference to attached drawing
It is described in detail.Fig. 1 is the structure chart of the fuel nozzle cooling structure for the heat-accumulation combustor for showing first embodiment.
As shown in Figure 1, heat-accumulation combustor 1L, 1R have as in the past known：Burner body 3L, 3R, in direction
One end in stove 5 has burner 2L, 2R；And heat storage unit 4L, 4R, it is set as the other end 3a in burner body 3L, 3R
It abuts with the burner body 3L, 3R and directly links, heat-accumulation combustor 1L, 1R is alternately switched repeatedly with opposed pairs
Operating combustion mode and the mode of exhaust mode are run, in combustion mode, from burner 2L, 2R courts of burner body 3L, 3R
F is jetted out flames into stove 5 to being heated (for example, 1000 DEG C or so) in stove 5, in exhaust mode, is inhaled from burner 2L, 2R
Draw the exhaust E in stove 5 and is discharged.
In heat-accumulation combustor 1L, 1R, in exhaust mode, the row of the exhaust system 16 with exhaust blower 14 is utilized
Gas sucking action is circulated to heat storage unit 4L, 4R from stove 5 interior suction ejectment gas E, the exhaust E being attracted, thus the waste heat product of exhaust E
Store to heat storage unit 4L, 4R, to by the exhaust E after heat storage unit 4L, 4R by cooling (for example, 200 DEG C or so) and to exhaust system
16 discharge of system when operating is switched to combustion mode from exhaust mode, utilizes the air supply system with gas supply air blower 11 later
13 gas supply effect makes combustion air flow pass to heat storage unit 4L, 4R, and is vented E's in heat storage unit 4L, 4R by putting aside
Waste heat preheats (heating) burning air.
Moreover, preheating after burning air to burner body 3L, 3R supply, and with by burner body 3L,
Fuel nozzle 6L, 6R of the inside setting of 3R and the fuel gas that supplies mixes combining combustion, thus burner body 3L, 3R passes through
Flames F exiting is generated using the energy-saving operation of waste heat.
Using heat-accumulation combustor 1L, 1R, the burner 1L, 1R are used with one-to-one group, so that in stove
Temperature is not accompanied by the pattern switching in combustion mode and exhaust mode and changes.
Operating control is carried out in such a way that a pair of of heat-accumulation combustor 1L, 1R alternately become combustion mode and exhaust mode to each other
System, so that when the heat-accumulation combustor 1L (1R) of either one is in combustion mode, the heat-accumulation combustor 1R (1L) of another party exists
It is operated under exhaust mode, when the former is switched to exhaust mode, the latter is switched to combustion mode.
In illustrated example, the furnace sidewall difference of left and right in constituting the furnace wall of section quadrangle of stove 5, toward each other
It is provided with a pair of of burner body 3L, 3R.A pair of of burner body can also be adjacently arranged with identical wall surface.
As shown in Figure 1, in the fuel nozzle cooling structure of the heat-accumulation combustor of present embodiment, each accumulation of heat of pair of right and left
Burner 1L, 1R are configured to have：Burner body 3L, 3R of access form have at one end towards fire open in stove 5
Mouth 2L, 2R；Heat storage unit 4L, 4R, one end 4a are connect with the other end 3a of burner body 3L, 3R；The fuel of hollow simplified shape
Nozzle 6L, 6R, to be inserted in the burner body 3L, 3R through the sides other end 3a of burner body 3L, 3R and from outside
Internal mode is arranged, and front end is open 6a towards burner 2L, 2R, and open-ended 6a is sprayed towards burner 2L, 2R in the past
It mixes to generate the fuel such as the fuel gas of flames F exiting with burning air；It is cooling to use pipe 8L, 8R, with surround fuel nozzle 6L,
The mode of the outside of 6R is arranged, and through the sides other end 3a of burner body 3L, 3R, and to burner master outside it
Extended out to inside body 3L, 3R fuel nozzle 6L, 6R front end opening 6a or its near；Fuel feed system 10 has control
With open and close valve 9L, 9R, (in figure, white hollow is shown as opening the fuel of supply-stopping of fuel processed, and solid black is shown as closing
Close), and with each fuel nozzle 6L, 6R in the fuel nozzle with the front end of its length direction one end opening 6a opposite side
The sides cardinal extremity 6b of 6L, 6R connect, to supply fuel towards the front end of fuel nozzle 6L, 6R opening 6a；Air supply system 13,
Supply-with the gas supply air blower 11 and control burning air that are supplied to burner body 3L, 3R for the air that will burn
Steam supply valve 12L, the 12R (in figure, white hollow is shown as opening, and solid black is shown as closing) of the opening and closing of stopping freely, and
It connect to supply burning air to heat storage unit 4L, 4R with the other end 4b of each heat storage unit 4L, 4R；And exhaust system 16,
With for attracting the exhaust E in stove 5 from burner 2L, 2R and being discharged to outside stove 5 exhaust blower 14 and control be vented E's
Discharge, (in figure, white hollow is shown as opening air bleeding valve 15L, the 15R of the opening and closing stopped freely, and solid black is shown as closing
Close), and connect to for the exhaust E circulations flowed out from heat storage unit 4L, 4R with the other end 4b of each heat storage unit 4L, 4R.
Specifically, air supply system 13 includes：A pair of burning air supply pipe 13a, respectively with a pair of of heat-accumulation combustor
Heat storage unit 4L, 4R of 1L, 1R directly link, and the combustion air flow for feeding to each heat storage unit 4L, 4R supply respectively is logical；Burn air
Fluidic junction 13b makes above-mentioned burning air supply pipe 13a converge；And burning air supply supervisor 13c, via burning sky
Gas fluidic junction 13b is connect with each burning air supply pipe 13a, empty in order to supply burning to a pair of of heat-accumulation combustor 1L, 1R both sides
Gas and burning air supply supervisor 13c be provided with gas supply air blower 11, in order to individually switch a pair of of heat-accumulation combustor 1L, 1R
Operation mode burning air supply pipe 13a be provided with steam supply valve 12L, 12R.
Moreover, in the heat-accumulation combustor 1R (1L) in combustion mode, air bleeding valve 15R (15L) is closed and steam supply valve
12R (12L) is opened, and the burning air being admitted to by the effect of the gas supply of air supply system 13 is via steam supply valve 12R (12L) to accumulation of heat
Portion 4R (4L) circulates, and is supplied from heat storage unit 4R (4L) further towards the burner 2R (2L) of burner body 3R (3L).
Specifically, exhaust system 16 includes：A pair of of exhaust pipe 16a, respectively with the storage of a pair of of heat-accumulation combustor 1L, 1R
Hot portion 4L, 4R directly link, and the exhaust E circulations for being discharged from each heat storage unit 4L, 4R respectively；It is vented fluidic junction 16b, for upper
Exhaust pipe 16a is stated to meet one another；And exhaust manifold 16c, it is connect with each exhaust pipe 16a via exhaust fluidic junction 16b, is
Exhaust E is discharged from a pair of of heat-accumulation combustor 1L, 1R both sides and exhaust manifold 16c is provided with exhaust blower 14, for list
Solely switch the operation mode of a pair of of heat-accumulation combustor 1L, 1R and exhaust pipe 16a is provided with air bleeding valve 15L, 15R.
Moreover, in the heat-accumulation combustor 1L (1R) in exhaust mode, air bleeding valve 15L (15R) is opened and steam supply valve 12L
(12R) is closed, and the exhaust E attracted using the exhaust sucking action of exhaust system 16 is from the burner 2L of burner body 3L (3R)
(2R) is circulated to heat storage unit 4L (4R), and from heat storage unit 4L (4R) further via air bleeding valve 15L (15R) and to exhaust system 16
Discharge.
When heat-accumulation combustor 1L, 1R are combustion mode, fuel with open and close valve 9L, 9R in order to by fuel to fuel nozzle
6L, 6R are supplied and are opened, and in exhaust mode, fuel open and close valve 9L, 9R closes to stop the supply of fuel.
When heat-accumulation combustor 1L, 1R are in combustion mode, steam supply valve 12L, 12R are in order to which the air that will burn is via heat storage unit
4L, 4R are opened to burner 2L, 2R supply of burner body 3L, 3R, and when in exhaust mode, steam supply valve 12L, 12R are
Stop the supply of burning air and closes.
When heat-accumulation combustor 1L, 1R are in exhaust mode, air bleeding valve 15L, 15R in order to via heat storage unit 4L, 4R from combustion
Burner 2L, 2R of burner main body 3L, 3R attract the exhaust E in stove 5 and open, when in combustion mode, air bleeding valve 15L, 15R
It is closed to stop the attraction of exhaust E.Supply air blower 11 and exhaust blower 14 is usually in the operating process of stove 5
It is operated when often.
In the present embodiment, the basic structure relative to above-mentioned heat-accumulation combustor 1L, 1R, each heat-accumulation combustor 1L,
1R has cooling structure respectively, and the cooling structure is configured in a manner of burner 2L, 2R towards high temperature, and for at it
Periphery circulation has fuel nozzle 6L, 6R of the exhaust E of high temperature to be cooled down.The cooling structure of fuel nozzle 6L, 6R includes mainly
Above-mentioned cooling pipe 8L, 8R and connecting tube 17L, 17R for connecting cooling pipe 8L, 8R and exhaust system 16.
Cooling pipe 8L, 8R include inner tube 19, outer tube 20, opening portion 21 and interconnecting part 22, and said inner tube 19 surrounds combustion
Expect the periphery of nozzle 6L, 6R, and the open-ended sides 6a are formed to the sides base end part 6b in the past in a tubular form along its length, are being fired
The sides base end part 6b of fuel nozzle 6L, 6R on the outside of burner main body 3L, 3R, by being engaged with the peripheral surface of the fuel nozzle 6L, 6R
Cricoid Closed end plate 19a its base end part is closed, and close to the front end side of burner 2L, 2R open, the outer tube 20 wrap
The periphery of inner tube 19 is enclosed, and the open-ended sides 6a are formed to cardinal extremity in the past in a tubular form along the length direction of fuel nozzle 6L, 6R
The portion sides 6b, the sides base end part 6b of fuel nozzle 6L, 6R on the outside of burner body 3L, 3R, by being connect with the peripheral surface of inner tube 19
The cricoid first Seal end plate 20a closed seals its base end part, and in the combustion more extended to the sides burner 2L, 2R than inner tube 19
The front end positions opening 6a for expecting nozzle 6L, 6R, cover the front end side of inner tube 19 from the sides burner 2L, 2R, and by with fuel
The cricoid second Seal end plate 20b of the peripheral surface engagement of nozzle 6L, 6R seals front end side, and the opening portion 21 is being burnt
The sides base end part 6b of fuel nozzle 6L, 6R on the outside of device main body 3L, 3R are formed in outer tube 20 in a manner of to atmosphere opening, described
Interconnecting part 22 is formed in inner tube 19 for being connected to exhaust system 16.
Moreover, by above-mentioned inner tube 19 and outer tube 20, it is cooling with pipe 8L, 8R equipped with：First flow path 23 is surrounded
The periphery of fuel nozzle 6L, 6R, and the open-ended sides 6a are formed to the sides base end part 6b, and and interconnecting part in the past along its length
22 connections；Second flow path 24 surrounds the periphery of first flow path 23, and along the length direction of fuel nozzle 6L, 6R from front end
The sides opening 6a are formed to the sides base end part 6b, and are connected to opening portion 21；And connection flow path 25, in fuel nozzle 6L, 6R
First flow path 23, is connected to by the front end sides opening 6a in such a way that flow path is turned back with second flow path 24.
That is, playing the exhaust system 16 of exhaust sucking action via the peripheral to atmosphere opening of fuel nozzle 6L, 6R.Moreover,
Cooling is connect via connecting tube 17L, 17R with exhaust system 16 with the interconnecting part 22 of pipe 8L, 8R, in the present embodiment,
The downstream side for the exhaust fluidic junction 16b that exhaust pipe 16a from each heat storage unit 4L, 4R converges, the cooling interconnecting part with pipe 8L, 8R
22 connect with the single exhaust manifold 16c for being provided with exhaust blower 14.Connecting tube 17L, 17R of each heat-accumulation combustor 1L, 1R
As long as the link position relative to exhaust system 16, then can be in the centre position of air bleeding valve 15L, 15R and exhaust blower 14
It connects in any position.
Next, being illustrated to the effect of the fuel nozzle cooling structure of the heat-accumulation combustor of first embodiment.
In the operation process of stove 5, such as shown in Figure 1, in the heat-accumulation combustor 1R on either one (right side), fuel with open and close valve 9R with
And steam supply valve 12R is opened and air bleeding valve 15R is closed, to be combustion mode, and in the heat-accumulation combustor in another party (left side)
In 1L, fuel is closed with open and close valve 9L and steam supply valve 12L and air bleeding valve 15L is opened, to be operated with exhaust mode.Accumulation of heat
The operating of burner 1L, 1R itself are well-known as described above.
By the exhaust sucking action of exhaust blower 14, in the heat storage unit 4L circulations of the heat-accumulation combustor 1L of exhaust mode
And the exhaust E that accumulation of heat cools down in heat storage unit 4L reaches exhaust blower 14 via open air bleeding valve 15L and is discharged.
The exhaust sucking action of the exhaust blower 14 is acted on from exhaust manifold 16c via two connecting tubes 17L, 17R
Each cooling interconnecting part 22 for using pipe 8L, 8R.Interconnecting part 22 via first flow path 23, connection flow path 25 and second flow path 24 and with
It is connected to the opening portion 21 of atmosphere opening, therefore passes through the exhaust sucking action of exhaust blower 14, air opening 21
And the cooling towards interconnecting part 22 in two sides is circulated in pipe 8L, 8R.
Temperature far below the room temperature of the temperature (about 1000 DEG C) of one end 4a of heat storage unit 4L, 4R air from a pair of of accumulation of heat
The opening portion 21 of the base end part side of cooling pipe 8L, 8R of burner 1L, 1R both sides is towards being set to towards the burner in stove 5
The combustion that has of a pair of of heat-accumulation combustor 1L, 1R of 2L, 2R and combustion mode and exhaust mode both sides in the condition of high temperature
Expect the front end opening 6a of nozzle 6L, 6R and the second flow path 24 in outer tube 20 circulates, and it is laggard to turn back in connection flow path 25
First flow path 23 of one step in inner tube 19 circulates, as a result, to fuel nozzle 6L, 6R of heat-accumulation combustor 1L, 1R of both sides into
Row cooling, after the cooling period, do not flow out certainly into stove 5 and using the exhaust sucking action of single exhaust blower 14 from connection
Portion 22 has the exhaust system 16 of exhaust E to attract discharge to circulation.
Even if the heat-accumulation combustor 1L in left side is switched to combustion mode and the heat-accumulation combustor 1R on right side is switched to exhaust
Pattern also ensures that fuel nozzle 6L, 6R of two sides of left and right are utilized exhaust and attract work always in the operating of exhaust blower 14
With the big air cooling of importing.
In the fuel nozzle cooling structure of the heat-accumulation combustor of first embodiment described above, heat-accumulation combustor
Exhaust mode and combustion mode is alternately repeated in 1L, 1R, in exhaust mode, makes to utilize the row with exhaust blower 14
The exhaust sucking action of gas system 16 exhaust E out of burner 2L, 2R of burner body 3L, 3R attract stove is circulated to and burns
Device main body 3L, 3R abuts and heat storage unit 4L, 4R of directly connection ground setting is to make savings waste heat, in combustion mode, by flowing
Pass to heat storage unit 4L, 4R and the flames F exiting that generates of the burning air that is heated is from burner 2L, 2R of burner body 3L, 3R to stove 5
Interior ejection, the heat-accumulation combustor 1L, 1R have：Fuel nozzle 6L, 6R of hollow simplified shape, be set to burner body 3L,
Inside 3R, and the fuel for mixing to generate flames F exiting with burning air is sprayed into stove 5 from its front end opening 6a；It is cooling to use
Pipe 8L, 8R be arranged in a manner of surrounding the outside of fuel nozzle 6L, 6R, and with for being connected to exhaust system 16
Interconnecting part 22 and opening portion 21 to atmosphere opening；And connecting tube 17L, 17R, interconnecting part 22 and exhaust system 16 are connected
It connects, by using the exhaust sucking action opening 21 via connecting tube 17L, 17R of exhaust system 16 towards connection
The air that portion 22 circulates cools down fuel nozzle 6L, 6R, therefore utilizes the vented drum that E discharges will be vented under exhaust mode
Wind turbine 14 makes cooling air flow into cooling with pipe 8L, 8R to be cooled down to fuel nozzle 6L, 6R, can prevent from firing
Expect nozzle 6L, 6R thermal deformation, and in addition, the equipment for cooling down needed for fuel nozzle 6L, 6R only need by fuel nozzle 6L,
Cooling pipe 8L, 8R and connecting tube 17L, 17R for connecting cooling pipe 8L, 8R and exhaust system 16 that 6R is surrounded,
Therefore cost of equipment and required installation space can be cut down, it is only necessary to the spatial extent of pipe, therefore arrange also simple.
The interconnecting part 22 of cooling pipe 8L, 8R and opening portion 21 are formed in be open with the front end of fuel nozzle 6L, 6R
The sides base end part 6b of side opposite 6a, and cooling pipe 8L, 8R have：First flow path 23 surrounds fuel nozzle 6L, 6R
Periphery, and the open-ended sides 6a are formed to the sides base end part 6b in the past along its length, and be connected to interconnecting part 22；Second flow path
24, the periphery of first flow path 23 is surrounded, and the open-ended sides 6a are formed to base in the past along the length direction of fuel nozzle 6L, 6R
The end sides 6b, and be connected to opening portion 21；And connection flow path 25, it will in the front end of fuel nozzle 6L, 6R sides opening 6a
First flow path 23 is connected to second flow path 24, therefore can make air along the length direction of fuel nozzle 6L, 6R from second flow path
24 until first flow path 23 and circulate and reciprocal so that it is guaranteed that cooling effect, can expeditiously cool down, and do not used cooling
Air released into stove 5, therefore can prevent furnace atmosphere from changing.
Have a pair of of heat-accumulation combustor 1L, 1R that another party when a side is in combustion mode operates under exhaust mode,
The exhaust system 16 of above-mentioned heat-accumulation combustor 1L, 1R are converged in exhaust fluidic junction 16b each other, in the downstream of exhaust fluidic junction 16b
Have single exhaust blower 14, so even for the stove 5 operated by a pair of of heat-accumulation combustor 1L, 1R, can also utilize
Single exhaust blower 14 cools down fuel nozzle 6L, 6R of both sides and ensures that alternate combustion operates.
In addition, in description of the present embodiment, to being suitable for a pair of of heat-accumulation combustor 1L, 1R the case where is said
It is bright, but it is also not limited to a pair, even if heat-accumulation combustor is monomer, it can also obtain above-mentioned function and effect.
Fig. 2 is the structure chart of the fuel nozzle cooling structure for the heat-accumulation combustor for showing second embodiment.With above-mentioned
One embodiment compares, and connecting tube 26L, 26R of second embodiment is different relative to the link position of exhaust system 16, because
And it acts on different.
In the first embodiment, connecting tube 17L, 17R from interconnecting part 22 and exhaust manifold 16c connections, but
In two embodiments, connecting tube 26L, 26R from interconnecting part 22 in each heat-accumulation combustor 1L, 1R, respectively with with burning
The centre position for heat storage unit 4L, 4R and air bleeding valve 15L, 15R that the adjoining of device main body 3L, 3R and the mode directly linked are arranged connects
It connects.Other structures are the same as the above first embodiment.
The effect of the fuel nozzle cooling structure of the heat-accumulation combustor of second embodiment is illustrated.As it is above-mentioned that
Sample, heat-accumulation combustor 1L, 1R are in combustion mode, the front end of fuel nozzle 6L, 6R towards burner 2L, the 2R for generating flames F exiting
Portion opening 6a is nearby and the other parts of the fuel nozzle 6L, 6R are comparably high temperature, and in exhaust mode, although flames F exiting by
Extinguish, but has the exhaust E of high temperature in the periphery circulation of fuel nozzle 6L, 6R.
Therefore, for by cooling down the cooling of pipe 8L, 8R fuel nozzle 6L, 6R carried out, being incited somebody to action preferably in combustion mode
19 side of inner tube is set as low temperature, and 20 side of outer tube is set as low temperature in exhaust mode.
In this second embodiment, by connecting tube 26L, 26R relative to exhaust system 16 link position with heat storage unit 4L,
4R is connect with the centre position of air bleeding valve 15L, 15R, therefore in exhaust mode (in figure, by the fortune of the heat-accumulation combustor 1L in left side
Turn to show) in, similarly to the first embodiment, is attracted using the exhaust via connecting tube 26L of exhaust system 16 and made
Outer tube 20 is initially flowed through with opening 21 and towards the air of the circulation of interconnecting part 22, flows through inner tube 19 later, thus, it is possible to
The outer tube 20 for being exposed to exhaust E is more efficiently cooled down by the air of more low temperature, is thus allowed for suitably cold
But to prevent fuel nozzle 6L from overheating.
On the other hand, in combustion mode (in figure, being shown by the operating of the heat-accumulation combustor 1R on right side), with above-mentioned first
Embodiment is different, in the gas supply effect supply using the air supply system 13 with gas supply air blower 11 towards heat storage unit 4R's
It burns in air, part burning air is in heat storage unit 4R detours, and (the exhaust of exhaust system 16 closed via air bleeding valve 15R
Pipe 16a) and connecting tube 26R is flowed into, then, circulate towards opening portion 21 via connecting tube 26R and by interconnecting part 22 by, this one
Part burning air initially flows through inner tube 19, flows through outer tube 20 later, thus, it is possible to will be exposed with the burning air of more low temperature
It is more efficiently cooled down in the inner tube 19 of flames F exiting, thus allows for suitably cooling to prevent fuel nozzle 6R from overheating.
That is, the switching relative to combustion mode, this working order of exhaust mode, the cooling flowing side in pipe 8L, 8R
To changing, so as to ensure the good cooling effect of fuel nozzle 6L, 6R.
In addition, as long as connecting tube 26L, 26R is disposed in and adjoins each other and burner body 3L, 3R for directly linking and accumulation of heat
Between portion 4L, 4R, there is no need to connecting tube 17L, 17R is at least extended to air bleeding valve as in the first embodiment
It is small-sized can to realize that the reduction of cost of equipment and equipment are arranged so as to cut down the space of pipe for the downstream side of 15L, 15R
Change.
In this second embodiment, it is applicable not only to a pair of of heat-accumulation combustor 1L, 1R, even if heat-accumulation combustor is monomer,
Also above-mentioned function and effect can be obtained.In addition, second embodiment can certainly have first embodiment possessed by its
His function and effect.
Claims (4)
1. a kind of fuel nozzle cooling structure of heat-accumulation combustor, the heat-accumulation combustor be alternately repeated exhaust mode with
Combustion mode makes the exhaust sucking action using the exhaust system with exhaust blower from burning in the exhaust mode
Exhaust is circulated to heat storage unit to put aside waste heat, in the combustion mode, by being circulated in the stove that the burner of device main body attracts
The heat storage unit and flame that the burning air that is heated generates is sprayed from the burner of the burner body into stove, feature exists
In,
The fuel nozzle cooling structure of the heat-accumulation combustor has：The fuel nozzle of hollow simplified shape, is set to the combustion
Burner body interior, and the fuel for mixing to generate flame with burning air is sprayed from its front end；Cooling is managed, with packet
The mode for enclosing the outside of the fuel nozzle is arranged, and with for being connected to the exhaust system interconnecting part and to air
Open opening portion；And connecting tube, the interconnecting part is connect with the exhaust system,
By the exhaust sucking action via the connecting tube of the exhaust system, using by the opening portion towards the company
The air of logical portion's circulation cools down the fuel nozzle.
2. a kind of fuel nozzle cooling structure of heat-accumulation combustor, the heat-accumulation combustor be alternately repeated exhaust mode with
Combustion mode, in the exhaust mode, the air bleeding valve that the exhaust system with exhaust blower is opened and closed open and
The steam supply valve that air supply system with gas supply air blower is opened and closed is closed, and the exhaust sucking action by the exhaust system is made
Exhaust is circulated to heat storage unit to put aside waste heat out of the burner of burner body attracts stove, and via the air bleeding valve to the row
Gas system is discharged, and in the combustion mode, the exhaust valve closure and steam supply valve opening make the confession by the air supply system
Gas acts on the combustion air flow supplied to the burner body and passes to the heat storage unit and heated, and by the burning air after heating
The flame of generation is sprayed from the burner of the burner body into stove, which is characterized in that
The fuel nozzle cooling structure of the heat-accumulation combustor has：The fuel nozzle of hollow simplified shape, is set to the combustion
Burner body interior, and the fuel for mixing to generate flame with burning air is sprayed from its front end；Cooling is managed, with packet
The mode for enclosing the outside of the fuel nozzle is arranged, and with for being connected to the exhaust system interconnecting part and to air
Open opening portion；And connecting tube, in the centre position of the heat storage unit and the air bleeding valve by the interconnecting part and institute
Exhaust system connection is stated,
When in exhaust mode, by the exhaust sucking action via the connecting tube of the exhaust system, using passing through
The opening portion cools down the fuel nozzle towards the air that the interconnecting part circulates, and when in combustion mode, leads to
The gas supply effect for crossing the air supply system, is opened by the interconnecting part towards this using in the heat storage unit detour and via the connecting tube
The burning air of oral area circulation cools down the fuel nozzle.
3. the fuel nozzle cooling structure of heat-accumulation combustor according to claim 1 or 2, which is characterized in that
The interconnecting part of cooling pipe and the opening portion are formed in and fuel nozzle front end opposite side
Base end part side, the cooling has with pipe：First flow path surrounds the periphery of the fuel nozzle, along its length from
Front end side is formed to base end part side, and is connected to the interconnecting part；Second flow path surrounds the periphery of the first flow path, edge
The length direction of the fuel nozzle is formed from front end side to base end part side, and is connected to the opening portion；And connection flow
The first flow path is connected to by road in the front end side of the fuel nozzle with the second flow path.
4. the fuel nozzle cooling structure of heat-accumulation combustor according to any one of claim 1 to 3, which is characterized in that
The fuel nozzle cooling structure of the heat-accumulation combustor has when a side is in combustion mode another party with exhaust mode
A pair heat-accumulation combustor of operating, the exhaust system of these heat-accumulation combustors are converged in fluidic junction each other, and at this
The downstream of fluidic junction is equipped with the single exhaust blower.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-024772 | 2017-02-14 | ||
| JP2017024772A JP6483169B2 (en) | 2017-02-14 | 2017-02-14 | Regenerative burner fuel nozzle cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108426247A true CN108426247A (en) | 2018-08-21 |
| CN108426247B CN108426247B (en) | 2020-09-01 |
Family
ID=63155804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711212217.9A Active CN108426247B (en) | 2017-02-14 | 2017-11-27 | Fuel nozzle cooling structure of heat accumulation combustor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6483169B2 (en) |
| KR (1) | KR102344215B1 (en) |
| CN (1) | CN108426247B (en) |
| TW (1) | TWI755441B (en) |
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- 2017-02-14 JP JP2017024772A patent/JP6483169B2/en active Active
- 2017-11-07 TW TW106138458A patent/TWI755441B/en active
- 2017-11-27 CN CN201711212217.9A patent/CN108426247B/en active Active
- 2017-12-29 KR KR1020170183912A patent/KR102344215B1/en active IP Right Grant
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| JP2003185129A (en) * | 2001-12-17 | 2003-07-03 | Tokyo Gas Co Ltd | Heat reserved combustion type flat frame burner |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2018132222A (en) | 2018-08-23 |
| TWI755441B (en) | 2022-02-21 |
| JP6483169B2 (en) | 2019-03-13 |
| KR20180093790A (en) | 2018-08-22 |
| CN108426247B (en) | 2020-09-01 |
| TW201829964A (en) | 2018-08-16 |
| KR102344215B1 (en) | 2021-12-29 |
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