CN209638998U - A kind of uniform flow type fire piece - Google Patents
A kind of uniform flow type fire piece Download PDFInfo
- Publication number
- CN209638998U CN209638998U CN201920011562.4U CN201920011562U CN209638998U CN 209638998 U CN209638998 U CN 209638998U CN 201920011562 U CN201920011562 U CN 201920011562U CN 209638998 U CN209638998 U CN 209638998U
- Authority
- CN
- China
- Prior art keywords
- fire
- hole
- fire hole
- flow
- disturbing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of uniform flow type fire pieces, including fiery piece main body, the inside of the fire piece main body has blast tube, fire hole is provided on the top plate of fiery piece main body, the lateral homogenizing plate being provided in the blast tube below the fire hole, the middle part of the homogenizing plate has the first flow-disturbing hole for being parallel to strip in the front-back direction, and the left part and right part of homogenizing plate offer several second flow-disturbings hole respectively, these the second flow-disturbing holes are distributed along the front and back.In the utility model, homogenizing plate can play the role of flow-disturbing, stream and current limliting, mixed gas in blast tube is by that can generate cross jamming when the second flow-disturbing hole of the first flow-disturbing hole and two sides, this stirring action can more fully mix combustion gas and air, so that the burning of this fire piece is more abundant and the tail-off time is short, while carbon monoxide is effectively reduced, the generation time of nitrogen oxides is also shortened, so that the discharge of nitrogen oxides be effectively reduced.
Description
Technical field
The utility model relates to the fiery pieces of fire row combustor.
Background technique
Fire row combustor is typically used in the heating such as module furnace, wall-hung boiler, water heater, steam generator, supplying hot water, for steaming
On the device of vapour, pedestal and several fiery pieces being disposed in parallel on pedestal, the combustion that setting is aligned with fiery piece on pedestal are generally included
Gas jets, gas nozzle spray combustion gas into the blast tube of fiery piece, in this process, using nozzle injection principle, in being capable of band
Air around dynamic enters blast tube and combustion gas mixing, and mixed gas is discharged from the fire hole of fiery piece and is burnt later.
In recent years, since environmental issue is more and more severeer, most stringent of boiler is formally implemented on April 1st, 2017 in Beijing
Discharged nitrous oxides standard, it is desirable that the reduced value < 30mg/ that newly constructed boiler nitrogen oxide emission is 3.5% in benchmark oxygen content
m3While CO emission reduced value < 95mg/m3, subsequent multiple cities and area enact and enforce Beijing standard successively.
Main heating equipment of the burner as boiler, is the main source of boiler air pollution emission, selects more low NOx row
Burner high-volume is the main means for reducing boiler air pollution emission, energy saving to greatest extent and burner weight
Want performance indicator.
The discharge amount of nitrogen oxides and carbon monoxide depend primarily on fuel gas buring it is abundant whether, combustion gas full combustion is then
The discharge of nitrogen oxides and carbon monoxide can be effectively reduced.Traditional single injector fire row combustor is difficult to ensure oxygen and combustion gas
Accurate mixed proportion occur at present therefore, it is difficult to control the discharge amount of nitrogen oxides and carbon monoxide through high-precision cipher telegram
The all-premixing burner that sub-control system control combustion gas and air are premixed in full premix ratio, burning nature is abundant, chemistry
Incomplete combustion loss is less, and the thermal efficiency is high, and nitrogen oxide emission can accomplish < 30mg/m3, carbon monoxide < 95mg/m3, row
High-volume fully meet requirement.Although all-premixing burner can fully meet the atmosphere pollution of newly constructed boiler in terms of energy-saving and environmental protection
Discharge standard, but to guarantee that the stability of full premix combustion controls it is necessary to carry out accurately ratio to combustion gas and air simultaneously,
This is the high nonlinear Control of difficulty.In combustion, the ratio control of combustion gas and air will definitely not for all-premixing burner
Two kinds of situations occur: if premix air is insufficient, and not having Means of Secondary Air Supplement, that is, anoxycausis, carbon monoxide emission
Amount will be substantially increased, the bad reason of energy-saving effect that here it is current most of full premix boilers in actual use it
One: if premix air is excessive, that is, cross and premix, detonation is easy when igniting.The steady flame problem of full premix combustion is another
Problem is difficult to stablize flame using the fire hole structure that mechanical means is processed, and almost global all-premixing burner is all to use
Metallic fiber establishment net package resistant to high temperature fire hole surface carries out steady flame, and the method for this steady flame of micropore is very effective, but at
This is very high, and service life is short, is expensive vulnerable part, and metallic fiber establishment net blocking in order to prevent influences burning, just necessary
Combustion gas is strictly filtered and air-filtering is handled, this not only adds the operating costs of boiler, and influence whether air-fuel ratio
Stability.Head construction is more complicated and heavy to prevent tempering phenomenon, has biggish noise in high pressure, high load capacity
The shortcomings that being all all-premixing burner.
Its mixed gas of the fiery piece of existing fire row combustor is typically directly discharged by fire hole after blast tube, and by
Also corresponding very fast in the air velocity in the combustion gas fast speed that nozzle ejects, blast tube, combustion gas is often difficult to air
It is effectively mixed, while being also difficult to ensure the uniformity of each fire hole mixed gas discharge, thus just part is easy to cause to fire
There is situations such as insufficient and flame height of burning is uneven in gas, to will increase the discharge amount of carbon monoxide and nitrogen oxides.
Utility model content
To solve the above-mentioned problems, the purpose of this utility model is to provide one kind can be improved even flame degree, reduces
The uniform flow type fire piece of nitrogen oxide emission.
The utility model be solve its technical problem and the technical solution adopted is that:
The inside of a kind of uniform flow type fire piece, including fiery piece main body, the fire piece main body has blast tube, fiery piece main body
Fire hole is provided on top plate, the lateral homogenizing plate being provided with below the fire hole in the blast tube is described equal
The middle part of flowing plate has the first flow-disturbing hole for being parallel to strip in the front-back direction, and the left part and right part of homogenizing plate offer respectively
Several second flow-disturbings hole, these the second flow-disturbing holes are distributed along the front and back.
Preferably, the second flow-disturbing hole of the homogenizing plate left part and right part is uniformly distributed along the longitudinal direction.
Preferably, the front-rear direction length in the first flow-disturbing hole is greater than or equal to the fire hole of top plate front end and last
Longitudinal separation between the fire hole at end；On homogenizing plate between the second flow-disturbing hole of front end and the second flow-disturbing hole of rearmost end away from
The longitudinal separation between fire hole from the fire hole and rearmost end that are greater than or equal to top plate front end.
Preferably, the middle part of the top plate has the blocking portion with the first flow-disturbing hole consistency from top to bottom, described
Fire hole is located at the two sides of the blocking portion.
Preferably, the fire hole is divided into several fire hole groups, if each fire hole group includes equally distributed along the longitudinal direction
Dry fire hole, and each fire hole group is uniformly distributed along the longitudinal direction.
Preferably, the stable flame hole being provided on the top plate between each two adjacent fire hole groups.
Preferably, the top plate is parallel to vertical median plane bilateral symmetry in the front-back direction relative to it.
Preferably, the vertical cross-section of the top plate is in " V "-shape and bilateral symmetry.
Preferably, the fiery piece main body includes matrix and the fire hole part that is arranged on matrix, the fire hole and flows
Plate is arranged on fire hole part, and fire hole is located at the top of fire hole part.
Preferably, there is recessed heat dam, the lower inner wall of the heat dam is located at fire hole part on the side wall of described matrix
Upper wall next distance.
The beneficial effects of the utility model are: in the utility model, it, can due to being additionally arranged homogenizing plate in blast tube
Play the role of flow-disturbing, stream and current limliting to the air-flow in blast tube, fire when current balance function enables to this fire piece to burn
Flame is more uniformly contour, and metering function can stablize flame and adjust the height of flame, and the mixed gas in blast tube is passed through
Cross jamming can be generated when the second flow-disturbing hole of the first flow-disturbing hole and two sides, this stirring action can be by combustion gas and air more
Adequately mixing while carbon monoxide is effectively reduced, also shortens so that the burning of this fire piece is more abundant and the tail-off time is short
The generation time of nitrogen oxides, so that the discharge of nitrogen oxides be effectively reduced, this fire chip architecture is simple, and cost is relatively low, convenient for pushing away
It is wide to use.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the structure chart of the utility model；
Fig. 2 is the partial sectional view of the utility model；
Fig. 3 is the partial enlarged view of part A in Fig. 2；
Fig. 4 is the working state figure on the utility model top.
Specific embodiment
Referring to figs. 1 to Fig. 4, a kind of uniform flow type fire piece, including fiery piece main body, the inside of fiery piece main body have blast tube
11, fire hole 12 is provided on the top plate of fiery piece main body, and the lateral stream positioned at 12 lower section of fire hole is provided in blast tube 11
Plate 13, the middle part of homogenizing plate 13 have a first flow-disturbing hole 14 for being parallel to strip in the front-back direction, the left part of homogenizing plate 13 and
Right part offers several second flow-disturbings hole 15 respectively, these the second flow-disturbing holes 15 are distributed along the front and back.In the utility model, by
In being additionally arranged homogenizing plate 13 in blast tube 11, flow-disturbing, stream and current limliting can be played to the air-flow in blast tube 11
Effect, flame when current balance function enables to this fire piece to burn is more uniformly contour, and metering function can stablize flame and tune
The height of flame is saved, it can when the mixed gas in blast tube 11 is by the second flow-disturbing hole 15 of the first flow-disturbing hole 14 and two sides
Generate cross jamming, this stirring action can more fully mix combustion gas and air so that the burning of this fire piece it is more abundant and
Tail-off time is short, while carbon monoxide is effectively reduced, the generation time of nitrogen oxides is also shortened, so that nitrogen be effectively reduced
The discharge of oxide, this fire chip architecture is simple, and cost is relatively low, convenient for promoting the use of.
Second flow-disturbing hole 15 of 13 left part of homogenizing plate and right part is uniformly distributed along the longitudinal direction, can further increase combustion
The uniformity of mixed gas in gas channel 11.In the present embodiment, the second flow-disturbing hole 15 of two sides is located at 13 left part of homogenizing plate
Center and right part center, and its width be 13 left part of homogenizing plate or right part width one third to two/
One, enable homogenizing plate 13 sufficiently to play the blocking decelerating effect to air-flow, by that will not cause to passing through for mixed gas
Big influence.
In the present embodiment, the front-rear direction length in the first flow-disturbing hole 14 is greater than or equal to the fire hole 12 and most of top plate front end
Longitudinal separation between the fire hole 12 of rear end；The second flow-disturbing hole in the second flow-disturbing hole 15 of front end and rearmost end on homogenizing plate 13
The distance between 15 are greater than or equal to the longitudinal separation between the fire hole 12 of top plate front end and the fire hole 12 of rearmost end.Make in this way
Can adequately combustion gas and air be mixed so that each fire hole 12 was discharged by obtaining the first flow-disturbing hole 14 and the second flow-disturbing hole 15
Mixed gas can be more uniform, so as to be effectively ensured flame stability and flame everywhere it is contour, reduce nitrogen oxygen
The discharge amount of compound.
The middle part of top plate has the blocking portion 16 with 14 consistency from top to bottom of the first flow-disturbing hole, and fire hole 12 is located at the two of blocking portion 16
Side, blocking portion 16 can generate blocking effect to the air-flow flowed directly up from the first flow-disturbing hole 14, air-flow are effectively reduced
Speed, and enable this fraction lateral flow and generate further interference with other air-flows, improve combustion gas and air
The mixed uniformity.
Fire hole 12 divides for several fire hole groups, and each fire hole group includes equally distributed several fire holes 12 along the longitudinal direction, and
Each fire hole group is uniformly distributed along the longitudinal direction, can be further ensured that the uniform contour of flame, be reduced the discharge amount of nitrogen oxides.
The stable flame hole 17 being provided on top plate between each two adjacent fire hole groups, the current limliting of stable flame hole 17 and homogenizing plate 13
The stabilization of flame is played in effect jointly, avoids that de- fire occurs, guarantees the normal work of this fire row combustor, the present embodiment
In, stable flame hole 17 is divided into several groups, and each group is included in the steady of several circular holes being uniformly arranged in left-right direction on guidance part
Flame hole 17, certainly, in practical application, other common shapes and distribution mode is can also be used in stable flame hole 17, it is not limited to this.
Top plate is parallel to vertical median plane bilateral symmetry in the front-back direction relative to it, can be further ensured that the equal of flame
It is even.In the present embodiment, the vertical cross-section of top plate is in " V "-shape and bilateral symmetry, can be played to the air-flow in blast tube 11
Further guide function so that lower end surface obliquely flow of the fraction along top plate, so as to further increase combustion gas with
The uniformity of air mixing.
Fiery piece main body includes matrix 21 and the fire hole part 22 that is arranged on matrix 21, and fire hole 12 and homogenizing plate 13 are arranged at
On fire hole part 22, and fire hole 12 is located at the top of fire hole part 22, can so facilitate the machine-shaping of matrix 21 and fire hole part 22,
Also it can play the role of slowing down heat transmitting, facilitate the temperature for reducing matrix 21.In the present embodiment, fire hole part 22 is curved by plate
Folding facilitates processing and assembly in the upper end of matrix 21 into simultaneously clamping fixed.In practical application, fire hole 12 can also be directly provided with
In fiery piece main body, homogenizing plate 13 can also be with the fiery integrated structure of piece main body, it is not limited to this.
On the side wall of matrix 21 have recessed heat dam 23, the lower inner wall of heat dam 23 be located at fire hole part 22 upper wall it
Next distance can effectively slow down the speed that flame heat regulating is transmitted to matrix 21 at fire hole 12 in this way, and thus, it is possible to be effectively reduced
The temperature of matrix 21 avoids matrix 21 from overheating and influences to use, so that the lower material system of high temperature resistance can be used in matrix 21
Make, can be effectively reduced the cost of the utility model.In the present embodiment, heat dam 23 time inner wall is upper and lower with 22 top surface of fire hole part
Spacing is 2mm, can reach excellent heat insulation, and certainly, in practical application, which can be adjusted flexibly as needed,
In addition, the front and rear width of heat dam 23 is substantially equal to left end fire hole 12 and right end fire hole on fire hole part 22 in the present embodiment
Spacing between 12, thus, it is possible to adequately be thermally shielded, certainly, in practical application, the front and rear width of heat dam 23 can basis
It needs to be adjusted flexibly.
The foregoing is merely the preferred embodiments of the utility model, as long as realizing the utility model with essentially identical means
The technical solution of purpose belongs within the protection scope of the utility model.
Claims (10)
1. the inside of a kind of uniform flow type fire piece, including fiery piece main body, the fire piece main body has blast tube (11), fiery piece main body
Top plate on be provided with fire hole (12), it is characterised in that: is provided in the blast tube (11) positioned at the fire hole (12)
The lateral homogenizing plate (13) of lower section, the middle part of the homogenizing plate (13), which has, to be parallel to the first of strip in the front-back direction and disturbs
Discharge orifice (14), the left part and right part of homogenizing plate (13) offer several second flow-disturbings hole (15) respectively, these the second flow-disturbing holes
(15) it is distributed along the front and back.
2. a kind of uniform flow type fire piece according to claim 1, it is characterised in that: homogenizing plate (13) left part and right part
Second flow-disturbing hole (15) is uniformly distributed along the longitudinal direction.
3. a kind of uniform flow type fire piece according to claim 1, it is characterised in that: the front and back in the first flow-disturbing hole (14)
Direction length is greater than or equal to the longitudinal separation between the fire hole (12) of top plate front end and the fire hole (12) of rearmost end；Homogenizing plate
(13) the distance between the second flow-disturbing hole (15) of front end and the second flow-disturbing hole (15) of rearmost end are greater than or equal to top plate on
Longitudinal separation between the fire hole (12) of front end and the fire hole (12) of rearmost end.
4. a kind of uniform flow type fire piece according to claim 1, it is characterised in that: the middle part of the top plate have with it is described
The blocking portion (16) of first flow-disturbing hole (14) consistency from top to bottom, the fire hole (12) are located at the two sides of the blocking portion (16).
5. a kind of uniform flow type fire piece according to claim 1, it is characterised in that: the fire hole (12) is divided into several fire holes
Group, each fire hole group includes equally distributed several fire holes (12) along the longitudinal direction, and each fire hole group is uniformly divided along the longitudinal direction
Cloth.
6. a kind of uniform flow type fire piece according to claim 5, it is characterised in that: be provided on the top plate positioned at each two
Stable flame hole (17) between adjacent fire hole group.
7. a kind of uniform flow type fire piece according to claim 1, it is characterised in that: before the top plate is parallel to relative to it
The vertical median plane bilateral symmetry of rear direction.
8. a kind of uniform flow type fire piece according to claim 7, it is characterised in that: the vertical cross-section of the top plate is in " V " word
Shape and bilateral symmetry.
9. a kind of uniform flow type fire piece according to claim 1, it is characterised in that: the fiery piece main body includes matrix (21)
With the fire hole part (22) being arranged on matrix (21), the fire hole (12) and homogenizing plate (13) are arranged at fire hole part (22)
On, and fire hole (12) is located at the top of fire hole part (22).
10. a kind of uniform flow type fire piece according to claim 9, it is characterised in that: have on the side wall of described matrix (21)
Recessed heat dam (23), the lower inner wall of the heat dam (23) are located at next distance of the upper wall of fire hole part (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920011562.4U CN209638998U (en) | 2019-01-02 | 2019-01-02 | A kind of uniform flow type fire piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920011562.4U CN209638998U (en) | 2019-01-02 | 2019-01-02 | A kind of uniform flow type fire piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209638998U true CN209638998U (en) | 2019-11-15 |
Family
ID=68477088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920011562.4U Active CN209638998U (en) | 2019-01-02 | 2019-01-02 | A kind of uniform flow type fire piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209638998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695873A (en) * | 2019-01-02 | 2019-04-30 | 刘维 | A kind of uniform flow type fire piece |
-
2019
- 2019-01-02 CN CN201920011562.4U patent/CN209638998U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695873A (en) * | 2019-01-02 | 2019-04-30 | 刘维 | A kind of uniform flow type fire piece |
| CN109695873B (en) * | 2019-01-02 | 2024-06-14 | 刘维 | Flow equalization fire piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109695877A (en) | A kind of two-stage combustion formula fire row combustor | |
| CN102012025B (en) | Low-NOx combustor with internal reflux of flue gas and homogeneous combustion and gas configuration method thereof | |
| CN109695873A (en) | A kind of uniform flow type fire piece | |
| CN109442398B (en) | Multipoint direct-injection bisection fast-mixing radial-injection low-nitrogen combustor | |
| CN201885230U (en) | Flue gas internal reflux homogeneous-combustion low-NOx (nitric oxide) combustor | |
| CN209638998U (en) | A kind of uniform flow type fire piece | |
| CN203489263U (en) | Oxygen-rich combustor | |
| KR960005758B1 (en) | Gas burner | |
| CN103672969A (en) | Dual-fuel combustion chamber nozzle of combustion gas turbine | |
| CN110360568A (en) | A kind of low nitrogen combustion apparatus and method | |
| CN209639004U (en) | A kind of two-stage combustion formula fire row combustor | |
| CN204438118U (en) | The fully premixed burner of water-cooled | |
| CN109695875A (en) | A kind of more injection tubular type fire pieces | |
| CN109695876A (en) | A kind of Ran's combustion fire row combustor | |
| CN106765102A (en) | A kind of heater combustion chamber of hypersonic enthalpy ground-based simulation equipment high | |
| CN209639003U (en) | A kind of Ran's combustion fire row combustor | |
| CN209639002U (en) | A kind of more injection tubular type fire pieces | |
| US11859867B2 (en) | Premixed low-nitrogen gas boiler | |
| CN214009217U (en) | Double-hot-reflux partially-premixed low-nitrogen combustor | |
| CN210638033U (en) | Flue type dense-dilute combustion low-nitrogen combustor | |
| CN203595144U (en) | Nozzle of dual-fuel combustion chamber of combustion gas turbine | |
| CN210601611U (en) | Pressure reduction combustor | |
| CN209639010U (en) | A kind of fire row combustor pedestal | |
| CN112113218A (en) | Double-hot-reflux partially-premixed low-nitrogen combustor and combustion method thereof | |
| CN201964410U (en) | Burner used in H-shaped gas heating water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |