CN205954045U - Connection structure of hot -blast person in charge of blast furnace hot stove and hot -blast standpipe - Google Patents
Connection structure of hot -blast person in charge of blast furnace hot stove and hot -blast standpipe Download PDFInfo
- Publication number
- CN205954045U CN205954045U CN201620982159.2U CN201620982159U CN205954045U CN 205954045 U CN205954045 U CN 205954045U CN 201620982159 U CN201620982159 U CN 201620982159U CN 205954045 U CN205954045 U CN 205954045U
- Authority
- CN
- China
- Prior art keywords
- hot blast
- vertical tube
- brick layer
- hot
- main pipe
- 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
Landscapes
- Blast Furnaces (AREA)
Abstract
The utility model relates to a connection structure of hot -blast person in charge of blast furnace hot stove and hot -blast standpipe, the brick appears falling in the current pipeline of effective solution because of the atress is poor, the crack, collapse, the rubescent scheduling problem of mouth of pipe department, hot -blast standpipe is by a section, the upper segment, hypomere and end section intercommunication constitute, top section top one side opening, top section opening part has the hot -blast person in charge of going up, an into section lower part is stretched at the upper segment top, hypomere upper portion is frustum shape, the hypomere lower part is the tubular structure, the hypomere lower part has the end to stretch the into interior lower hot -blast person in charge of hot -blast standpipe, the inner of the hot -blast person in charge has knee wall downwards down, there is the hybrid tube hot -blast person in charge below at hot -blast standpipe opposite side down, there is the manhole hybrid tube below, there is the heavy matter brick layer in bottom in hypomere bottom exit, the heavy matter brick layer below in bottom is end section, the section dress is on the support at the end. The utility model discloses effectively solve the hot -blast person in charge and standpipe and be connected the poor problem of position atress, can the high wind -warm syndrome of secure conveyance and can not appear subsiding, fall the brick, pipeline phenomenon such as turn red, it is longe -lived.
Description
Technical field
The utility model is related to the attachment structure of a kind of blast funnace hot blast stove hot blast main pipe and hot blast vertical tube.
Background technology
Blast furnace ironmaking is most widely used ironmaking mode in current world wide, and generally every seat height stove will mate three and arrive
Four hot-blast stoves, top combustion stove is to apply a kind of type of furnace in recent years at home, the effect of hot-blast stove be for
Blast furnace process storage and offer hot blast, are connected by hot air duct between blast furnace and hot-blast stove.Blast-furnace hot-air pipeline includes:Hot blast
The part such as arm, hot blast main pipe, wind mixed chamber or vertical tube, bustle pipe, blowpipe forms.The effect of hot air duct is by hot blast
Convey from hot-blast stove and be assigned to each tuyere device of blast furnace.From (1000 DEG C ~ 1380 DEG C) first warps of hot-blast stove hot blast out
Cross the hot blast manifold being connected with every hot-blast stove and import hot blast main pipe, then ring is entered in blast-furnace body by wind mixed chamber or vertical tube
Outer bustle pipe, in bustle pipe, the blowpipe device being assigned to around blast furnace is entered blast-furnace tuyere by hot blast.
The energy-conservation of modern blast furnace high-blast-temperature hot-blast stove, volume increase, synergy, reduction coke ratio, reduction of discharging are increasingly gone by ironmaking
Industry is paid attention to, and therefore, takes various modes at present to improve wind-warm syndrome, reduces ironmaking cost, increase the performance of enterprises, due to hot blast
Temperature is increasingly enhanced, and the pipe safety of heat air delivery has become as problem critically important at present, particularly hot blast main pipe with perpendicular
The junctions position of the junction of pipe, the structure of interface intersection forms male and fomale(M＆F), the especially crowning of vertical tube and hot blast master
Pipe recess face connects, and the first half protruding parts stress of vertical tube can be caused very poor, easily occur brick in long-term heat air delivery, split
Stitch, collapse, rubescent at the mouth of pipe, it is forced blowing out maintenance, seriously constrains the conveying of high wind-warm syndrome, therefore, it is improved and is existed with innovation gesture
Must go.
Content of the invention
For above-mentioned situation, for overcoming prior art defect, the purpose of the utility model is exactly to provide a kind of blast-furnace hot-air
, the existing pipeline of effectively solving can there is brick, crack, collapse because of stress difference in stove hot blast main pipe and the attachment structure of hot blast vertical tube
Collapse, the problems such as rubescent at the mouth of pipe.
The technical scheme that the utility model solves is, including hot blast main pipe and hot blast vertical tube, hot blast vertical tube by push up section, on
Section, hypomere are constituted together with being sequentially communicated with bottom section, and the top section of hot blast vertical tube is top one side opening, downward along opening center line
Hot blast vertical tube top section be by the first sprayed coating inwardly built by laying bricks or stones from the first inner walls, the first refractory fibre carpet veneer, first
Outer lightweight brick layer, lightweight brick layer and the first heavy brick layer combine the tubular structure of composition, hot blast vertical tube successively in first
Top section opening at be connected with hot blast main pipe, one end that upper hot blast main pipe is connected with hot blast vertical tube be the inner, upper hot blast master
Minister on the inner of pipe, the inner bottom of upper hot blast main pipe is short, the top of the inner top of upper hot blast main pipe and hot blast vertical tube top section
End connects, and the top pars infrasegmentalis side of the inner bottom of upper hot blast main pipe and hot blast vertical tube connects, and constitutes vertical connecting structure, hot blast
The epimere of vertical tube be inwardly build by laying bricks or stones from the second inner walls the second sprayed coating, the second refractory fibre carpet veneer, the second outer light-weight brick
Layer, lightweight brick layer and the second heavy brick layer combine the tubular structure of composition, the epimere top of hot blast vertical tube successively in second
Portion puts in the top pars infrasegmentalis of hot blast vertical tube, and the lower section upper portion of hot blast vertical tube is the 3rd spraying inwardly built by laying bricks or stones from the 3rd inner walls
Layer, the 3rd refractory fibre carpet veneer, the 3rd lightweight brick layer and the 3rd heavy brick layer combine the taper type of composition, hot blast successively
The lower pars infrasegmentalis of vertical tube is light from outside the 4th sprayed coating that the 4th inner walls are inwardly built by laying bricks or stones, the 4th refractory fibre carpet veneer, the 4th
Matter brick layer, lightweight brick layer and the 4th heavy brick layer combine the tubular structure of composition, under hot blast vertical tube successively in the 4th
The lower pars infrasegmentalis of section top and hot blast vertical tube is in that docking shape connects, and there is lower hot blast main pipe the lower pars infrasegmentalis side of hot blast vertical tube, under
The inner of hot blast main pipe puts in the hypomere of hot blast vertical tube, and the inner bottom along lower hot blast main pipe has downwards to the 4th heavy brick layer
The knee wall that heavy brick that interior lateral hot blast vertical tube center is piled up is constituted, the lower section of lower hot blast main pipe is in the opposite side of hot blast vertical tube
There is mixing tube, at the hypomere outlet at bottom of hot blast vertical tube, from up to down place mat has bottom heavy brick layer, under the heavy brick layer of bottom
Side is the bottom section of hot blast vertical tube, the downwardly convex arc that the bottom section of hot blast vertical tube is built into for heat resistance concrete, hot blast vertical tube
Bottom section is contained on support.
The utility model efficiently solves the problems, such as that hot blast main pipe and vertical tube connecting portion stress are poor, can be with safe transport
The high wind-warm syndrome of 1200-1400 degree, without occurring subsiding, falls brick, the phenomenon such as pipeline is rubescent, life-span length.
Brief description
Fig. 1 is the attachment structure schematic diagram of existing blast funnace hot blast stove hot blast main pipe and hot blast vertical tube.
Fig. 2 is structure sectional view of the present utility model.
Fig. 3 is the A-A of the utility model Fig. 2 to sectional view.
Fig. 4 is the B-B direction sectional view of the utility model Fig. 2.
Fig. 5 is the C-C of the utility model Fig. 2 to sectional view.
Fig. 6 is the D-D of the utility model Fig. 2 to sectional view.
Specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the present utility model is elaborated.
Be given by Fig. 1-Fig. 6, the utility model includes hot blast main pipe and hot blast vertical tube, hot blast vertical tube by push up section, epimere, under
Section is constituted together with being sequentially communicated with bottom section, and the top section 1 of hot blast vertical tube is top one side opening, along the heat that opening center line is downward
The top section of wind vertical tube is by from outside the first sprayed coating that the first housing 1a inwall is inwardly built by laying bricks or stones, the first refractory fibre carpet veneer, first
Lightweight brick layer, lightweight brick layer and the first heavy brick layer combine the tubular structure of composition successively in first, hot blast vertical tube
It is connected with hot blast main pipe 2, one end that upper hot blast main pipe is connected with hot blast vertical tube is the inner, upper hot blast main pipe at the section opening of top
The inner on minister, the inner bottom of upper hot blast main pipe is short, the top of the inner top of upper hot blast main pipe and hot blast vertical tube top section
Connect, the top pars infrasegmentalis side of the inner bottom of upper hot blast main pipe and hot blast vertical tube connects, and constitutes vertical connecting structure, and hot blast erects
The epimere 3 of pipe be inwardly build by laying bricks or stones from the second housing 3a inwall the second sprayed coating, the second refractory fibre carpet veneer, the second outer light-weight brick
Layer, lightweight brick layer and the second heavy brick layer combine the tubular structure of composition, the epimere top of hot blast vertical tube successively in second
Portion puts in the top pars infrasegmentalis of hot blast vertical tube, and hypomere 4 top of hot blast vertical tube is the inwardly build by laying bricks or stones from the 3rd housing 4f inwall the 3rd
Sprayed coating, the 3rd refractory fibre carpet veneer, the 3rd lightweight brick layer and the 3rd heavy brick layer combine the taper type of composition successively,
The lower pars infrasegmentalis of hot blast vertical tube is the 4th sprayed coating 4a, the 4th refractory fibre carpet veneer inwardly built by laying bricks or stones from the 4th housing 4g inwall
4b, the 4th outer lightweight brick layer 4c, lightweight brick layer 4d and the 4th heavy brick layer 4e combine the tubular of composition successively in the 4th
The lower pars infrasegmentalis of structure, the lower section upper portion of hot blast vertical tube and hot blast vertical tube is in that docking shape connects, the lower pars infrasegmentalis one of hot blast vertical tube
There is lower hot blast main pipe 5 side, and the inner of lower hot blast main pipe puts in the hypomere of hot blast vertical tube, along lower hot blast main pipe inner bottom to
Under have to the 4th heavy brick layer the knee wall 6 that the heavy brick that lateral hot blast vertical tube center piles up constitutes, under lower hot blast main pipe
There is mixing tube 7 side in the opposite side of hot blast vertical tube, and at the hypomere outlet at bottom of hot blast vertical tube, from up to down place mat has bottom heavy
Brick layer 9, the lower section of bottom heavy brick layer is the bottom section 10 of hot blast vertical tube, the bottom section of hot blast vertical tube for heat resistance concrete be built into
The arc of lower convexity, the bottom section of hot blast vertical tube is contained on support 11.
The interior end opening of described upper hot blast main pipe 2 is more than outer end opening, and the inner of upper hot blast main pipe and outer end are through taper
Changeover portion connects.
The top of described upper hot blast main pipe 2 be by the 5th sprayed coating 2a-1 inwardly building by laying bricks or stones from the 5th inner walls,
Five refractory fibre carpet veneer 2b, the 5th outer lightweight brick layer 2c-1, lightweight brick layer 2d-1 and the 5th heavy brick layer 2e-1 be successively in the 5th
Combine half tubular structure of composition, the bottom of upper hot blast main pipe 2 is by the 6th inwardly building by laying bricks or stones from the 6th inner walls
Sprayed coating 2a-2, the 6th outer lightweight brick layer 2c-2, in the 6th lightweight brick layer 2d-2 and sixfold matter brick layer 2e-2 group is combined in successively
Half tubular structure constituting together.
The epimere 3 of described hot blast vertical tube is isometrical tubular structure, and the hypomere of hot blast vertical tube is up-small and down-big reducing
Tubular structure, the epimere bore of hot blast vertical tube is identical with the upper bore of the lower section upper portion of hot blast vertical tube.
The top of described mixing tube 7 be by the 7th refractory fibre carpet veneer 7a inwardly building by laying bricks or stones from the 7th inner walls,
Seven lightweight brick layer 7c-1 and septuple matter brick layer 7d-1 combine half tubular structure of composition, the bottom of mixing tube 7 successively
Be by the 8th sprayed coating 7b, the 8th lightweight brick layer 7c-2 and eightfold matter brick layer 7d-2 inwardly built by laying bricks or stones from the 8th inner walls according to
Secondary half tubular structure combining composition.
Described knee wall 6 is to combine, by three layers of heavy brick, the wall body structure constituting from the outside to the core successively.
From up to down place mat has the bottom heavy brick layer of two-layer to hypomere 4 outlet at bottom of described hot blast vertical tube, two-layer
Each layer in the heavy brick layer of bottom is all to be in that laterally to pile up shape and right side heavy brick layer be in vertically to pile up by left side heavy brick layer
Shape is constituted.
Manhole 8 is had on hot blast vertical tube below described mixing tube.
In sum, the utility model, through the change of supervisor and vertical tube attachment structure, forms new attachment structure, pipeline
Body is sturdy and durable, good airproof performance, lays bricks and will not fall off, the air tight runout of pipeline, long service life, reduces maintenance cost, economical
Notable with social benefit, it is an innovation of hot-blast stove hot blast main pipe and hot blast vertical tube attachment structure.
Claims (8)
1. the attachment structure of a kind of blast funnace hot blast stove hot blast main pipe and hot blast vertical tube, including hot blast main pipe and hot blast vertical tube, it is special
Levy and be, hot blast vertical tube by push up section, epimere, hypomere be sequentially communicated with bottom section together with constitute, the top section of hot blast vertical tube（1）For top
Hold a side opening, the top section along the downward hot blast vertical tube of opening center line is by from the first housing（1a）Inwall inwardly build by laying bricks or stones
One sprayed coating, the first refractory fibre carpet veneer, the first outer lightweight brick layer, lightweight brick layer and the first heavy brick layer combine successively in first
The tubular structure together constituting, is connected with hot blast main pipe at the top section opening of hot blast vertical tube（2）, upper hot blast main pipe and hot blast
One end that vertical tube is connected is the inner, minister on the inner of upper hot blast main pipe, and the inner bottom of upper hot blast main pipe is short, upper hot blast master
Top connection, the inner bottom of upper hot blast main pipe and the top pars infrasegmentalis of hot blast vertical tube of the inner top of pipe and hot blast vertical tube top section
Side connects, and constitutes vertical connecting structure, the epimere of hot blast vertical tube（3）It is from the second housing（3a）Inwall inwardly build by laying bricks or stones second
Sprayed coating, the second refractory fibre carpet veneer, the second outer lightweight brick layer, in second lightweight brick layer and the second heavy brick layer group is combined in successively
The tubular structure constituting together, the epimere top of hot blast vertical tube puts in the top pars infrasegmentalis of hot blast vertical tube, the hypomere of hot blast vertical tube（4）
Top is from the 3rd housing（4f）The 3rd sprayed coating that inwall is inwardly built by laying bricks or stones, the 3rd refractory fibre carpet veneer, the 3rd lightweight brick layer and
3rd heavy brick layer combines the taper type of composition successively, and the lower pars infrasegmentalis of hot blast vertical tube is from the 4th housing（4g）Inwall
The 4th sprayed coating inwardly built by laying bricks or stones（4a）, the 4th refractory fibre carpet veneer（4b）, the 4th outer lightweight brick layer（4c）, light-weight brick in the 4th
Layer（4d）With the 4th heavy brick layer（4e）Combine the tubular structure of composition, the lower section upper portion of hot blast vertical tube and hot blast successively
The lower pars infrasegmentalis of vertical tube is in that docking shape connects, and there is lower hot blast main pipe the lower pars infrasegmentalis side of hot blast vertical tube（5）, lower hot blast main pipe
The inner puts in the hypomere of hot blast vertical tube, and lateral hot blast is arranged downwards to the 4th heavy brick layer at the inner bottom along lower hot blast main pipe
The knee wall that the heavy brick that vertical tube center is piled up is constituted（6）, there is mixing the lower section of lower hot blast main pipe in the opposite side of hot blast vertical tube
Pipe（7）, at the hypomere outlet at bottom of hot blast vertical tube, from up to down place mat has bottom heavy brick layer（9）, under the heavy brick layer of bottom
Side is the bottom section of hot blast vertical tube（10）, the downwardly convex arc that the bottom section of hot blast vertical tube is built into for heat resistance concrete, hot blast erects
The bottom section of pipe is contained in support（11）On.
2. the attachment structure of blast funnace hot blast stove hot blast main pipe according to claim 1 and hot blast vertical tube is it is characterised in that institute
The upper hot blast main pipe stated（2）Interior end opening be more than outer end opening, the inner of upper hot blast main pipe and outer end are through tapering transition Duan Lian
Connect.
3. the attachment structure of blast funnace hot blast stove hot blast main pipe according to claim 1 and hot blast vertical tube is it is characterised in that institute
The upper hot blast main pipe stated（2）Top be by the 5th sprayed coating inwardly built by laying bricks or stones from the 5th inner walls（2a-1）, the 5th fire resisting
Fibre felt layer（2b）, the 5th outer lightweight brick layer（2c-1）, lightweight brick layer in the 5th（2d-1）With the 5th heavy brick layer（2e-1）According to
Secondary half tubular structure combining composition, upper hot blast main pipe（2）Bottom inwardly built by laying bricks or stones by from the 6th inner walls
6th sprayed coating（2a-2）, the 6th outer lightweight brick layer（2c-2）, lightweight brick layer in the 6th（2d-2）With sixfold matter brick layer（2e-
2）Combine half tubular structure of composition successively.
4. the attachment structure of blast funnace hot blast stove hot blast main pipe according to claim 1 and hot blast vertical tube is it is characterised in that institute
The epimere of the hot blast vertical tube stated（3）For isometrical tubular structure, the hypomere of hot blast vertical tube is up-small and down-big reducing tubular structure,
The epimere bore of hot blast vertical tube is identical with the upper bore of the lower section upper portion of hot blast vertical tube.
5. the attachment structure of blast funnace hot blast stove hot blast main pipe according to claim 1 and hot blast vertical tube is it is characterised in that institute
The mixing tube stated（7）Top be by the 7th refractory fibre carpet veneer inwardly built by laying bricks or stones from the 7th inner walls（7a）, the 7th lightweight
Brick layer（7c-1）With septuple matter brick layer（7d-1）Combine half tubular structure of composition, mixing tube successively（7）Bottom
It is by the 8th sprayed coating inwardly built by laying bricks or stones from the 8th inner walls（7b）, the 8th lightweight brick layer（7c-2）With eightfold matter brick layer
（7d-2）Combine half tubular structure of composition successively.
6. the attachment structure of blast funnace hot blast stove hot blast main pipe according to claim 1 and hot blast vertical tube is it is characterised in that institute
The knee wall stated（6）It is to combine, by three layers of heavy brick, the wall body structure constituting from the outside to the core successively.
7. the attachment structure of blast funnace hot blast stove hot blast main pipe according to claim 1 and hot blast vertical tube is it is characterised in that institute
The hypomere of the hot blast vertical tube stated（4）From up to down place mat has the bottom heavy brick layer of two-layer, the bottom heavy of two-layer to outlet at bottom
Each layer in brick layer is all to be in that laterally to pile up shape and right side heavy brick layer be in vertically to pile up shape to constitute by left side heavy brick layer.
8. the attachment structure of blast funnace hot blast stove hot blast main pipe according to claim 1 and hot blast vertical tube is it is characterised in that institute
Manhole is had on hot blast vertical tube below the mixing tube stated（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620982159.2U CN205954045U (en) | 2016-08-30 | 2016-08-30 | Connection structure of hot -blast person in charge of blast furnace hot stove and hot -blast standpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620982159.2U CN205954045U (en) | 2016-08-30 | 2016-08-30 | Connection structure of hot -blast person in charge of blast furnace hot stove and hot -blast standpipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205954045U true CN205954045U (en) | 2017-02-15 |
Family
ID=57978269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620982159.2U Active CN205954045U (en) | 2016-08-30 | 2016-08-30 | Connection structure of hot -blast person in charge of blast furnace hot stove and hot -blast standpipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205954045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165694A (en) * | 2018-03-09 | 2018-06-15 | 中冶京诚工程技术有限公司 | Hot air pipeline structure and hot air conveying system |
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | Lining masonry structure of hot-air pipeline and lining masonry structure of three-fork of hot-air pipeline |
-
2016
- 2016-08-30 CN CN201620982159.2U patent/CN205954045U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165694A (en) * | 2018-03-09 | 2018-06-15 | 中冶京诚工程技术有限公司 | Hot air pipeline structure and hot air conveying system |
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | Lining masonry structure of hot-air pipeline and lining masonry structure of three-fork of hot-air pipeline |
| CN108165694B (en) * | 2018-03-09 | 2023-04-21 | 中冶京诚工程技术有限公司 | Hot air pipeline structure and hot air conveying system |
| CN108193010B (en) * | 2018-03-09 | 2023-04-28 | 中冶京诚工程技术有限公司 | Lining building structure of hot air pipeline and three-fork lining building structure of hot air pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108603660B (en) | Top combustion hot blast stove | |
| CN205954045U (en) | Connection structure of hot -blast person in charge of blast furnace hot stove and hot -blast standpipe | |
| CN105650624B (en) | A kind of coal gas and air classification premixed combustion and the hot-blast stove for spreading heat | |
| CN107036084A (en) | Gas fired-boiler | |
| CN109402314B (en) | Top combustion type hot blast stove burner | |
| CN102719584B (en) | Hot blast heater realizing preheated combustion of horizontal spraying heat accumulator of premixed air flow of gas and air | |
| CN102251094B (en) | Heat accumulating type soaking pit furnace for burning low-heat value gas | |
| CN108193010B (en) | Lining building structure of hot air pipeline and three-fork lining building structure of hot air pipeline | |
| CN202898445U (en) | Combined brick structure for inlet and outlet pipe orifice of hot-blast stove | |
| CN203517788U (en) | Porous body burning combustor of remixing coal gas whirl flow with premix gas | |
| CN101387408A (en) | Domestic lining structure for large-sized circulating fluidized bed boiler | |
| CN205616915U (en) | Hot -blast furnace is with even gas distribution brick | |
| CN103484588A (en) | Top combustion type hot air furnace arranging annular flameless combustion device below arch roof of combustion chamber | |
| CN201265021Y (en) | Triangle disposed blast furnace hot blast stove system | |
| CN107502694A (en) | A kind of shaft furnace inlet duct and shaft furnace air inlet method | |
| CN203360477U (en) | Hot blast stove adopting coal gas and air orthogonal jetting and mixing and porous body for combustion supporting | |
| CN202011886U (en) | Hot air outlet pipe of hot blast stove | |
| CN202080997U (en) | Steel flue cooling device for glass kiln | |
| CN105648131A (en) | Even gas distribution brick for hot air furnace | |
| CN203474829U (en) | Hot blast furnace for combustion of heat accumulator by virtue of upwards spraying and returning of cross-mixed swirl flow of coal gas and air | |
| CN203653598U (en) | Hot-blast stove for impact remixed combustion of coal gas spiral flow and premixed gas | |
| CN209493476U (en) | A kind of kiln heating device avoiding glass indigo plant white line defect | |
| CN209181517U (en) | A kind of ceramic kiln burning oxygen-enriched combustion-supporting energy saver | |
| CN102287818B (en) | Combustion equipment channel structure and heat accumulating type combustion equipment | |
| CN202519284U (en) | Air heating furnace with nozzles hedging, spraying, burning, refluxing and preheating stable flame uniformly distributed in prechamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |