CN108050536A - Low-temperature air preheater - Google Patents
Low-temperature air preheater Download PDFInfo
- Publication number
- CN108050536A CN108050536A CN201711233073.5A CN201711233073A CN108050536A CN 108050536 A CN108050536 A CN 108050536A CN 201711233073 A CN201711233073 A CN 201711233073A CN 108050536 A CN108050536 A CN 108050536A
- Authority
- CN
- China
- Prior art keywords
- preheating cabinet
- air
- interior conduit
- low
- cylinder
- 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.)
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Classifications
-
- 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
- F23L15/04—Arrangements of recuperators
-
- 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)
- Air Supply (AREA)
Abstract
The invention discloses low-temperature air preheaters,Including preheating cabinet,Air pipeline,Cylinder,Cylinder is arranged on the outside of preheating cabinet,Preheating cabinet one side is equipped with smoke inlet,Preheating cabinet opposite side inner wall is in the crescent of indent,The circular arc thickness faced at smoke inlet is most thick,Gas outlet is equipped with above preheating cabinet,Dust mouth is equipped with below preheating cabinet,The air pipeline is vertically arranged in inside preheating cabinet,Air pipeline is inside and outside " returning " font structure being arranged,Air inlet pipe is connected the one side of interior conduit with air outlet pipe,Air inlet pipe,The junction of air outlet pipe and interior conduit is equipped with floating bearing,The opposite side of the piston rod connection interior conduit of cylinder,The centre position of the smoke inlet alignment interior conduit,The present invention enters the air before boiler using the heat smoke preheating of discharge,Effectively improve smoke heat energy utilization rate,Positive strong shock resistance,It is difficult to accumulate dust,Anti- expansion,Service life is long,It is simple in structure,It is economical and practical,Work efficiency is high.
Description
Technical field
The invention belongs to technical field of heat exchangers, and in particular to low-temperature air preheater.
Background technology
Boiler air preheater is will be into the air preheat before boiler to centainly using the flue gas in boiler back end ductwork
The device of temperature for improving the heat exchange performance of boiler, reduces energy expenditure, during work flue gas into fashionable, heating surface it is interior
Side metallic walls face is susceptible to abrasion, dust stratification, and dust stratification can cause inner passage to become smaller for a long time, and resistance increases, expends wind turbine
Electric energy or even its normal operation can be influenced；In order to solve this problem, it is necessary to often be cleaned, this will often wait until big
It can be carried out when repairing the cycle, cause work efficiency low, cost increases.
The content of the invention
To solve the above problems, the invention discloses low-temperature air preheaters, smoke heat energy utilization rate is effectively improved, greatly
Improve the positive impact resistance of inner wall, simple in structure, economical and practical, work efficiency is high；
In order to achieve the above objectives, technical scheme is as follows：
Low-temperature air preheater, it is characterised in that：Including preheating cabinet, air pipeline, cylinder, the preheating cabinet is square hollow knot
Structure, cylinder are arranged on the outside of preheating cabinet, and preheating cabinet one side is equipped with smoke inlet, and preheating cabinet opposite side inner wall is in the crescent moon of indent
Shape, the circular arc thickness faced at smoke inlet is most thick, and gas outlet is equipped with above preheating cabinet, dust mouth is equipped with below preheating cabinet,
The air pipeline is vertically arranged in inside preheating cabinet, and air pipeline is inside and outside " returning " font structure being arranged, and air inlet pipe is with going out
Tracheae connects the one side of interior conduit, and the junction of air inlet pipe, air outlet pipe and interior conduit is equipped with floating bearing, and the piston rod of cylinder connects
Connect the opposite side of interior conduit, the centre position of the smoke inlet alignment interior conduit；
As a modification of the present invention, the preheating cabinet is internally provided with ceramic erosion resistant coating；
As a modification of the present invention, the air inlet pipe, air outlet pipe are equipped with thermometer；
As a modification of the present invention, the gas outlet is arranged on the most edge of circular arc, and the two radian is identical；
As a modification of the present invention, the bottom surface of the preheating cabinet is taper；
As a modification of the present invention, the preheating cabinet is externally provided with thermal insulation layer；
The beneficial effects of the invention are as follows：
Low-temperature air preheater of the present invention using the heat smoke preheating of discharge into the air before boiler, effectively improves
Smoke heat energy utilization rate, the inner wall of face smoke inlet use the crescent structure of indent, positive strong shock resistance, it is difficult to
Dust is accumulated, anti-expansion, service life is long, simple in structure, economical and practical, and work efficiency is high.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is air pipeline schematic diagram of the present invention；
Reference numerals list：
1st, preheating cabinet, 2, air pipeline, 3, cylinder, 4, smoke inlet, 5, preheating cabinet opposite side inner wall, 6, gas outlet, 7, go out dirt
Mouthful, 8, air inlet pipe, 9, air outlet pipe, 10, interior conduit, 11, floating bearing, 12, the tie point of cylinder piston rod and interior conduit, 13,
Ceramic erosion resistant coating, 14, thermometer, 15, the bottom surface of preheating cabinet.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention；It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to the direction in attached drawing, and word " interior " and " outer " refer respectively to direction or remote
Direction from particular elements geometric center；
As shown in the figure, low-temperature air preheater of the present invention, including preheating cabinet 1, air pipeline 2, cylinder 3, the preheating
Case 1 is square hollow structure, and cylinder 3 is arranged on the outside of preheating cabinet, and 1 one side of preheating cabinet is equipped with smoke inlet 4, preheating cabinet opposite side
Inner wall 5 is in the crescent of indent, and the circular arc thickness faced at smoke inlet 4 is most thick, and 1 top of preheating cabinet is equipped with gas outlet 6, in advance
Dust mouth 7 is equipped with below hot tank, the air pipeline 2 is vertically arranged in inside preheating cabinet, and air pipeline 2 is inside and outside to be arranged
" returning " font structure, air inlet pipe 8 are connected the one side of interior conduit 10, air inlet pipe 8, air outlet pipe 9 and the company of interior conduit 10 with air outlet pipe 9
It meets place and is equipped with floating bearing 11, the opposite side of the piston rod connection interior conduit of cylinder 3, the smoke inlet 4 is directed at interior conduit 10
Centre position；
Low-temperature air preheater of the present invention, using the heat smoke preheating of discharge into the air before boiler, heat smoke from
Smoke inlet 4 pours, and air is flowed through out of air pipeline 2, and the dust being mingled in flue gas is directly beaten on the arc surface of inner wall 5,
Arc surface has disperseed impact force, and dust is difficult accumulation, and since arc surface is in crescent, the circular arc faced at smoke inlet 4 is thick
Most thick, positive strong shock resistance is spent, and circular arc thickness gradually can slowly start by impacting for a long time in shock point
Dust is accumulated, then proceeds by corrosion, it is most thick at shock point of the invention, use greatly improved while guarantee is safe
Time, there are about 6-10 times for service life raising；Due to arc surface indent, the particularity of structure can be effectively resisted due to heat
The expansion that gas is brought, service life is long, and the interior conduit 10 of air pipeline 2 of the present invention can drive backspin in the piston rod of cylinder 3
Turn, change the travelling route of flue gas, effectively improve smoke heat energy utilization rate, air pipeline 2 of the present invention is arranged to be inside and outside
" returning " font structure, flue gas from the centre position of interior conduit 10 through beating on arc surface, will not direct impulse piping, pipeline
Service life is long, and " returning " font structure, and full of twists and turns, contact area is big, and quick heating is efficient, simple in structure, economical
Practicality, work efficiency are high；
Preheating cabinet 1 of the present invention is internally provided with ceramic erosion resistant coating 13, and resistance to corrosion is strong, and inner wall is not easy dust stratification, reduces dimension
Number is repaiied, reduces cost；
Air inlet pipe 8 of the present invention, air outlet pipe 9 are equipped with thermometer 14, can intuitively find out that air enters front and rear temperature
Comparison；
A modification of the present invention, the gas outlet 6 are arranged on the most edge of circular arc, and the two radian is identical, and flow of flue gas is smooth,
Convenient for smoke evacuation；
The bottom surface 15 of preheating cabinet of the present invention is taper, is convenient to clean the dust fallen；
Preheating cabinet 1 of the present invention is externally provided with thermal insulation layer, and heat distributes slowly, and heat utilization rate is high, cost-effective；
The technical means disclosed in the embodiments of the present invention is not limited only to the technological means disclosed in the above embodiment, further include by with
Upper technical characteristic is combined formed technical solution.
Claims (6)
1. low-temperature air preheater, it is characterised in that：Including preheating cabinet, air pipeline, cylinder, the preheating cabinet is square hollow
Structure, cylinder are arranged on the outside of preheating cabinet, and preheating cabinet one side is equipped with smoke inlet, and preheating cabinet opposite side inner wall is in the crescent moon of indent
Shape, the circular arc thickness faced at smoke inlet is most thick, and gas outlet is equipped with above preheating cabinet, dust mouth is equipped with below preheating cabinet,
The air pipeline is vertically arranged in inside preheating cabinet, and air pipeline is inside and outside " returning " font structure being arranged, and air inlet pipe is with going out
Tracheae connects the one side of interior conduit, and the junction of air inlet pipe, air outlet pipe and interior conduit is equipped with floating bearing, and the piston rod of cylinder connects
Connect the opposite side of interior conduit, the centre position of the smoke inlet alignment interior conduit.
2. low-temperature air preheater according to claim 1, it is characterised in that：The preheating cabinet is internally provided with ceramic anti-corrosion
Layer.
3. low-temperature air preheater according to claim 1, it is characterised in that：The air inlet pipe, air outlet pipe are equipped with temperature
Spend table.
4. low-temperature air preheater according to claim 1, it is characterised in that：The gas outlet is arranged on the most side of circular arc
Edge, the two radian are identical.
5. low-temperature air preheater according to claim 1, it is characterised in that：The bottom surface of the preheating cabinet is taper.
6. low-temperature air preheater according to claim 1, it is characterised in that：The preheating cabinet is externally provided with thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711233073.5A CN108050536B (en) | 2017-11-30 | 2017-11-30 | Low-temperature air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711233073.5A CN108050536B (en) | 2017-11-30 | 2017-11-30 | Low-temperature air preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108050536A true CN108050536A (en) | 2018-05-18 |
| CN108050536B CN108050536B (en) | 2019-10-29 |
Family
ID=62121373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711233073.5A Active CN108050536B (en) | 2017-11-30 | 2017-11-30 | Low-temperature air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108050536B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3254704A (en) * | 1964-04-23 | 1966-06-07 | Babcock & Wilcox Co | Bottom supported air heater |
| CN2077086U (en) * | 1990-06-21 | 1991-05-15 | 东南大学 | Spiral slot tube type air preheater |
| CN2409428Y (en) * | 2000-03-09 | 2000-12-06 | 辽河油田华飞科技开发中心 | Air preheater for heat injection boiler |
| JP2004293980A (en) * | 2003-03-27 | 2004-10-21 | Toho Gas Co Ltd | Heating furnace |
| CN202660927U (en) * | 2012-05-09 | 2013-01-09 | 黄冈市中基窑炉有限公司 | Air heat exchanger |
| CN103884019A (en) * | 2014-02-26 | 2014-06-25 | 南通京通石墨设备有限公司 | Graphite-tube type low-temperature air preheater |
| CN204100828U (en) * | 2014-07-30 | 2015-01-14 | 湖南奥特朗工业装备有限公司 | Heat exchanger |
| CN206257695U (en) * | 2016-12-05 | 2017-06-16 | 无锡市志成生化工程装备有限公司 | Steam type airheater |
-
2017
- 2017-11-30 CN CN201711233073.5A patent/CN108050536B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3254704A (en) * | 1964-04-23 | 1966-06-07 | Babcock & Wilcox Co | Bottom supported air heater |
| CN2077086U (en) * | 1990-06-21 | 1991-05-15 | 东南大学 | Spiral slot tube type air preheater |
| CN2409428Y (en) * | 2000-03-09 | 2000-12-06 | 辽河油田华飞科技开发中心 | Air preheater for heat injection boiler |
| JP2004293980A (en) * | 2003-03-27 | 2004-10-21 | Toho Gas Co Ltd | Heating furnace |
| CN202660927U (en) * | 2012-05-09 | 2013-01-09 | 黄冈市中基窑炉有限公司 | Air heat exchanger |
| CN103884019A (en) * | 2014-02-26 | 2014-06-25 | 南通京通石墨设备有限公司 | Graphite-tube type low-temperature air preheater |
| CN204100828U (en) * | 2014-07-30 | 2015-01-14 | 湖南奥特朗工业装备有限公司 | Heat exchanger |
| CN206257695U (en) * | 2016-12-05 | 2017-06-16 | 无锡市志成生化工程装备有限公司 | Steam type airheater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108050536B (en) | 2019-10-29 |
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