CN2480707Y - High temp. furnace smoke pipe transited from inner thermal-insulation to outer thermal-insulation - Google Patents
High temp. furnace smoke pipe transited from inner thermal-insulation to outer thermal-insulation Download PDFInfo
- Publication number
- CN2480707Y CN2480707Y CN 01241339 CN01241339U CN2480707Y CN 2480707 Y CN2480707 Y CN 2480707Y CN 01241339 CN01241339 CN 01241339 CN 01241339 U CN01241339 U CN 01241339U CN 2480707 Y CN2480707 Y CN 2480707Y
- Authority
- CN
- China
- Prior art keywords
- insulation
- flange
- straight tube
- pipe
- incubated
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a high temperature flue gas canal transiting from internal insulation to external insulation, which comprises a mixing chamber (1), a transition section (2), a straight tube (3), a buckling expansion joint (8), an angle pipe (9), a flange (10) and a coal intake tube (11). The utility model is also equipped with a transition section transiting from internal insulation to external insulation, which comprises a flame retardant coating (5), an internal heat insulating layer (6), an external heat insulating layer (7), a tapered steel pipe (4), the straight pipe (3) and the flange (10). The canal can decrease temperature variation gradient, ensure the transition section (2) buckling freely along diameter direction, avoid cracks and extend the service life.
Description
The utility model relates to a kind of dry coal-fired high temperature boiler flue gas tube road.
Come moisture-free coal by boiler body extracting high-temperature flue gas, adopt the stove smoke pipe road of internal insulation structure to realize usually.Interior holding furnace smoke pipe road is made up of internal layer refractory material, thermal insulating warm-keeping layer, carbon steel sheet shell.Because fire-resistant bed thickness, housing diameter is big, difficult arrangement.For simplified design, reduce investment, it is the outer insulation construction of material that many stove smoke pipes road changes into the ZG2Cr25Ni9Si2 heat resisting cast steel.After moving about 2000 hours, find the reducer pipe of outer insulation or straight tube with the mixing chamber junction of interior insulation, mother metal vertically produces the crack, the circumferential welded seam between reducer pipe or straight tube and the mixing chamber connecting ring also cracks.By analysis, main cause is that mixing chamber connecting ring hull-skin temperature is low, has limited connected outer insulation pipeline section is diametric to expand with heat and contract with cold, and this pipeline section is cracked.
The purpose of this utility model provides a kind of high temperature boiler flue gas tube road that outwards is incubated transition by interior insulation, the mixing chamber, the reducer pipe that are incubated in making outwards are incubated the straight tube transition and dwindle temperature contrast gradually, the reducer pipe diametric(al) is expanded freely, select ability heat-resisting steels through the solution treatment of high temperature hardening more than 1000 ℃, appropriate welding procedure prevents the generation of crackle.
The purpose of this utility model is achieved in that the alternately place with inside and outside insulation construction, produce large and small the changeover portion that diameter is different, diameter at butt end and welding identical with mixing chamber carbon steel sheet housing diameter, straight tube inserts a joint in the changeover portion microcephaly, and connects with flange, wherein, be radially expanded displacement for slotted hole with absorption with the flange screw of straight tube welding to central extension, if the accounting temperature gradient is very little, be incubated straight tube outward and can insert a joint, the cancellation flange directly welds.Turning point connects with the expansion telescopic joint between other tube and tube with bend pipe and straight tube welding.The heat-insulation layer that applied thickness does not wait in the changeover portion, changeover portion also lays outward
The thermal insulating warm-keeping layer of shape gradual change, like this, the changeover portion case temperature rises to high temperature gradually by low temperature, expand freely thereby reach the changeover portion diametric(al), and select through the solution treatment of high temperature hardening the heat-resisting steels of ability high temperature more than 1000 ℃, appropriate welding procedure prevents the generation of crackle.
The utility model outwards is incubated transitional structure owing to having adopted by interior insulation, thereby the temperature of changeover portion steel pipe rises to high temperature gradually by low temperature, and the changeover portion diametric(al) is expanded freely.Changeover portion adopts flange to be connected with straight tube, and straight tube inserts a joint in the changeover portion, and the flange screw that welds with straight tube is to the slotted hole of tube hub expansion, to have absorbed the displacement that the stopping time is radially expanded, prevents the generation of crackle, has prolonged the service life in stove smoke pipe road greatly.If the accounting temperature gradient is very little, the blue structure of also desirable elimination is directly with straight tube and the welding of reducing steel pipe, to reduce investment.
Below in conjunction with description of drawings embodiment:
Fig. 1 is the structural representation in the utility model high temperature boiler flue gas tube road.
By accompanying drawing 1 as can be known, the utility model high temperature boiler flue gas tube road is made up of mixing chamber 1, changeover portion 2, straight tube 3, expansion telescopic joint 8, bend pipe 9, flange 10, coal feeding pipe 11 etc.The changeover portion 2 that outwards is incubated transition by interior insulation is made up of flame retardant coating 5, internal insulation 6, reducing steel pipe 4, outer heat insulation layer 7, straight tube 3, flange 10.During installation, with the welding of the shell of reducing steel pipe 4 heavy caliber ends and mixing chamber 1, straight tube 3 inserts a joint in changeover portions 2 small-caliber ends, and connects with flange 10, wherein, with the flange screw of straight tube 3 welding be the slotted hole of expanding to tube hub, be radially expanded displacement with absorption.Connect with expansion telescopic joint 8 between the straight tube 3, need the corner to connect with bend pipe 5, if the accounting temperature gradient is very little, straight tube 3 can insert a joint in the changeover portion 2, cancellation flange connection, directly welding.When laying heat-insulation layer, lay the internal insulation 6 in mixing chamber 1, the changeover portion 2 earlier, changeover portion 2 heavy caliber ends are thinned to zero gradually to small-caliber end thickness, and then lay flame retardant coating 5.Also lay outside the changeover portion 2
The thermal insulating warm-keeping layer 7 of shape gradual change.Coal feeding pipe 11 is established in lower end in the utility model high temperature boiler flue gas tube road.During work, the high temperature furnace cigarette enters mixing chamber 1 by boiler furnace, through the coal-fired preliminary oven dry that pipeline will enter pipeline, dries in coal pulverizer, and wears into coal dust, enters the burner hearth burning again.
Claims (3)
1, a kind of high temperature boiler flue gas tube road that outwards is incubated transition by interior insulation, be incubated mixing chamber (1), changeover portion (2) in it comprises, be incubated straight tube (3), expansion telescopic joint (8), bend pipe (9), flange (10), coal feeding pipe (11) composition outward, it is characterized in that: this stove smoke pipe road is provided with the changeover portion (2) that outwards is incubated transition by interior insulation.
2, a kind of high temperature boiler flue gas tube road that outwards is incubated transition by interior insulation according to claim 1, it is characterized in that: changeover portion (2) is made up of flame retardant coating (5), internal insulation (6), reducing steel pipe (4), outer heat insulation layer (7), straight tube (3), flange (10), the thickness of the internal insulation that lays (6) is thinned to zero by the heavy caliber end of reducing steel pipe (4) gradually to small-caliber end, and then lay flame retardant coating (5), heat insulation layer (7) is laid in the outside of reducing steel pipe (4), its thickness is thickeied to small-caliber end gradually by zero, reaches outer INSULATION DESIGN value.
3, a kind of high temperature boiler flue gas tube road that outwards is incubated transition by interior insulation according to claim 1 and 2, it is characterized in that: straight tube (3) inserts changeover portion (2) one joints, and connect with flange (10), wherein flange (10) screw with straight tube (3) welding is to the slotted hole of tube hub expansion, is radially expanded displacement with absorption.Very little as the accounting temperature gradient, straight tube (3) can insert reducer pipe one joint, cancellation flange, direct and reducing steel pipe (4) welding with straight tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01241339 CN2480707Y (en) | 2001-04-24 | 2001-04-24 | High temp. furnace smoke pipe transited from inner thermal-insulation to outer thermal-insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01241339 CN2480707Y (en) | 2001-04-24 | 2001-04-24 | High temp. furnace smoke pipe transited from inner thermal-insulation to outer thermal-insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2480707Y true CN2480707Y (en) | 2002-03-06 |
Family
ID=33653355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01241339 Expired - Lifetime CN2480707Y (en) | 2001-04-24 | 2001-04-24 | High temp. furnace smoke pipe transited from inner thermal-insulation to outer thermal-insulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2480707Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456499A (en) * | 2014-11-27 | 2015-03-25 | 江苏太湖锅炉股份有限公司 | Waste heat boiler structure with L-shaped combined heated face |
-
2001
- 2001-04-24 CN CN 01241339 patent/CN2480707Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456499A (en) * | 2014-11-27 | 2015-03-25 | 江苏太湖锅炉股份有限公司 | Waste heat boiler structure with L-shaped combined heated face |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2480707Y (en) | High temp. furnace smoke pipe transited from inner thermal-insulation to outer thermal-insulation | |
| CN201443755U (en) | Labyrinth type expansion joint of slag discharge pipe of circulating fluidized bed boiler | |
| CN2745934Y (en) | Blast furnace air intake device | |
| CN205803554U (en) | A kind of W type radial canal of band porcelain bushing | |
| CN111981250B (en) | High-temperature gas recovery pipeline | |
| CN201032262Y (en) | Helical heat exchange type heating stove | |
| CN215947336U (en) | Hot air pipeline structure of blast furnace | |
| CN208859629U (en) | The fire-resistant layer structure of high-temperature flue gas pipeline | |
| CN2092672U (en) | Multi-purpose high velocity ceramic burner with low pollution | |
| CN202546812U (en) | Water cooled wall of boiler furnace | |
| CN206280957U (en) | A kind of New Regenerative radiant tube combustion device | |
| CN207350340U (en) | A kind of burner of replaceable burner block for regenerative radiant tube burner | |
| CN104913498A (en) | High-efficiency energy-saving normal-pressure horizontal super-conducting gas boiler | |
| CN205877449U (en) | High temperature resistant heat preservation stove tobacco pipe way with bearing ring | |
| CN215372534U (en) | Water-cooled high temperature furnace tobacco pipe structure | |
| CN105157427B (en) | Pipeline and wall socket join structure and its installation method for all types of industries stove | |
| CN213120145U (en) | High-temperature flue gas channel structure of rotary reaction furnace | |
| CN216743382U (en) | Nozzle outlet expansion joint in continuous annealing furnace | |
| CN2388550Y (en) | Vertical boiler | |
| CN217844738U (en) | Fire tube furnace fire tube protective radiant tube and fire tube structure | |
| CN204676130U (en) | A kind of comburent air duct and be provided with the stainless steel cover type annealing furnace of this comburent air duct | |
| CN201348252Y (en) | Combined structure of heat accumulating type burner block and furnace body wall | |
| CN215372538U (en) | Furnace smoke pipeline nail-grabbing fixing structure | |
| CN111609417B (en) | Hot cigarette pipeline sealing connection structure | |
| CN214400600U (en) | Hot air pipeline structure of hot blast stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SIPING CITY JUPENG ENERGY EQUIPMENT CO., LTD. Free format text: FORMER NAME OR ADDRESS: SIPING GUANGDA ELECTRIC POWER REPAIRING AND BUILDING FACTORY |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Siping Jupeng Thermal Equipment Co., Ltd. Patentee before: Siping Guangda Electric Power Repairing and Building Factory |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110424 Granted publication date: 20020306 |