CN102162647A - Frameless detachment-free rotary air heater - Google Patents
Frameless detachment-free rotary air heater Download PDFInfo
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- CN102162647A CN102162647A CN2011100981422A CN201110098142A CN102162647A CN 102162647 A CN102162647 A CN 102162647A CN 2011100981422 A CN2011100981422 A CN 2011100981422A CN 201110098142 A CN201110098142 A CN 201110098142A CN 102162647 A CN102162647 A CN 102162647A
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- heating surface
- heavy wall
- frameless
- air heater
- air
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- 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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Abstract
The invention discloses a frameless detachment-free rotary air heater, which consists of 3 to 8 groups of outer fin reinforced heat transfer tube bundles, wherein each group of heat transfer tube bundle has a frameless self-supporting structure consisting of spiral fin heat transfer tube bundles welded on a thin-walled inlet steam collecting tank and a thin-walled drainage collecting tank respectively, and the heat transfer tube bundles are averagely distributed in a primary air flue and a secondary air flue; any heat transfer tube bundle can rotate separately in a full angle of 360 degrees by adopting the self-supporting stable structure of the tube bundle so as to solve the problems that separate rotation of the heating surface of a certain stage cannot be realized, rotation in the full angle of 360 degrees cannot be realized, the heating surface cannot be rotated without cutting off steam, the operation part has complex structure and is not easily detached or maintained and ash blockage, leakage and fin deformation are caused; and the rotary air heater is frameless and detachment-free, can rotate in the full angle of 360 degrees, and is convenient to maintain.
Description
Technical field
The present invention relates to a kind of steam air heater of utility boiler, be specifically related to a kind of frameless rotary steam air heater of exempting to dismantle, this rotary steam air heater be frameless, exempt to dismantle and energy-saving steam air heaters that can 360 ° of full angles rotations.
Background technology
Steam air heater is the boiler auxiliaries of northern China thermal power plant indispensability, is the heat transmission equipment of cold air that heating enters air preheater, and large-sized station boiler divides wind steam air heater and secondary wind steam air heater, and its structure is identical with principle.The thermal power plant generally adopts the steam air heater that puts into operation to improve the wind-warm syndrome that enters air preheater winter, prevent the cold end corrosion that air preheater cold junction generation sulfuric acid dewfall causes, cause the stifled ash of air preheater cold junction heating surface, and then cause the unfavorable operating modes such as increase, the decline of air preheater heat exchange efficiency and exhaust gas temperature rising of suction, fan resistance.
Heat power plant boiler when operation be general adopts low-pressure steam to draw gas wind and secondary wind to the air preheater inlet are carried out the preheating heating, the arrangement of steam air heater in the air channel generally is fixed, according to the size in air channel, the heating surface unit of fin reinforcing was formed outside the steam air heater heating surface bank generally adopted 3 to 8 groups.Because steam air heater mainly moves during low temperature in the winter time, running time is short, and other times raise because of environment temperature, and steam air heater is stopped transport; But steam air heater still places the air channel during stopping transport, and wind and secondary wind resistance that air washes away that steam air heater tube bank causes still exist, and have increased station service.In view of this, some producers had manufactured and designed rotary or half revolving steam steam air heater puts into operation in recent years, as rotary steam air heater with fixed frame, but, the rotary steam air heater structure heaviness that contains framework, operation inconvenience is easily leaked, 360 ° of full angle rotating operations be can't realize, unit safety, stable and economical operation had a strong impact on and restrict.The Scotch boiler steam air heater that has put into operation at present is in service in addition exists following problem:
1. the steam air heater heating surface that respectively divides into groups is provided with fixed frame, needs because of revolution space between heating surface are provided with the sealing plate that prevents to form the flue gas corridor, the heating surface needs that respectively divide into groups during rotation rotate successively, can not realize the independent rotation of certain one-level heating surface, simultaneously, also can't realize 360 ° of full angle rotating operations;
2. Fen Zu single-stage heating surface is provided with 2 steam inlet tubes, must at first cut off steam during rotation, and behind the adpting flange of dismounting steam inlet, heating surface can rotate, and does not cut off steam and then can't rotate heating surface.
3. the steam air heater project organization is unreasonable, the operation part complex structure, and dismounting and maintenance are difficult for, and have stifled ash, leakage, problems such as fin distortion.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists, the object of the present invention is to provide a kind of frameless rotary steam air heater of exempting to dismantle, overcome the independent rotation that can not realize certain one-level heating surface, also can't realize 360 ° of full angle rotating operations, not cut off steam and then can't rotate heating surface and operation part complex structure that dismounting and maintenance are difficult for, and there is stifled ash, leak, the problem of fin distortion, have framelessly exempt to dismantle, can 360 ° of full angle rotary manipulations and advantage easy to maintenance.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of frameless rotary steam air heater of exempting to dismantle, be included in the heating surface bank of even distribution 3-8 outer fin reinforcing in the air channel 6, the two ends of each heating surface bank 7 respectively with the top of the bottom of heavy wall admission collection case 8 corresponding in the air channel 6 and the hydrophobic collection case 5 of heavy wall fixedly conducting be connected, the top of this heavy wall admission collection case 8 is with the connection that is conducted of the end of vertical heavy wall steam inlet pipe 12 as the rotation front axle, vertical heavy wall steam inlet pipe 12 is applied in preceding swivel bearing 9 and the two interference fit at 6 tops, air channel, the other end conducting of vertical heavy wall steam inlet pipe 12 connects steam admission side counter flange 13, be provided with the hermetically sealed rotating disc of admission end mechanism 11 around heavy wall steam inlet pipe 12 outer walls in addition above preceding swivel bearing 9, the hermetically sealed rotating disc of admission end mechanism 11 is provided with hand turnover mechanism 10; And the bottom of the hydrophobic collection case 5 of heavy wall is with the connection that is conducted of the end of heavy wall drain pipe 3 as the rotation rear axle, heavy wall drain pipe 3 runs through back swivel bearing 4 and the two interference fit that is fixed on 6 bottoms, air channel, the other end conducting of heavy wall drain pipe 3 connects hydrophobic side counter flange 1, is provided with the hermetically sealed mechanism 2 in hydrophobic side around heavy wall drain pipe 3 outer walls in addition below the swivel bearing 4 of back.
Described heating surface bank 7 is frameless self supporting structure, and 2-4 the shape equal diameter helical fin of the same size heat-transfer pipe that is connected by vertically concordant from top to bottom and conducting longitudinally constitutes, the central axis of heating surface bank 7 is a vertical direction, and the heat-transfer pipe in the heating surface bank 7 is sparse arrangement.
The hermetically sealed mechanism in the hermetically sealed rotating disc of described admission end mechanism 11 and hydrophobic side 2 inside are provided with the labyrinth sealing system.
Described hand turnover mechanism 10 is substituted by electric turnover mechanism.
Described heating surface bank 7 in the winter time the time its heating surface keep vertical with the air-flow direction in the air channel, its heating surface is with the air-flow direction keeping parallelism in the air channel when summer, spring and autumn its heating surface keep default angle of inclination with the air-flow direction in the air channel.
Described heating surface bank 7 adopts spiral fin coil or the boiler carbon constructional quality steel and the rolling spiral fin coil that is composited of aluminium of welding.
The present invention washes away the heating surface of heating surface bank 7 by the air in the air channel 6, improved the temperature that enters the air preheater air, because reliable whirligig is arranged, can be during shutdown of boiler, the heating surface by rotation heating surface bank 7 makes that heating surface bank 7 planes are parallel with wind direction, form straight-through air channel, reduce wind and secondary wind flowing resistance significantly, reduce drag losses and pressure fan load, save station service; Heating surface bank 7 is frameless self supporting structure, have heating surface of one's own, need not sealing plate between heating surface, guarantee that rotation space-time air-flow is evenly moving, avoid forming air disturbance, increase local resistance, also can prevent the spinning obstacle that heating surface bank 7 gravity deformations bring thus, guarantee that this steam air heater rotates safely and reliably, during heating surface bank 7 rotations, need not to dismantle any parts of steam air heater and just can rotate; The hermetically sealed mechanism in the hermetically sealed rotating disc of admission end mechanism 11 and hydrophobic side 2 inside are provided with the labyrinth sealing system, can guarantee that like this heavy wall steam inlet pipe 12 steam do not leak; Heat-transfer pipe is sparse arrangement, and steam working medium single process in heating surface bank 7 flows, and efficiently solves the distortion of steam air heater fin, and leakage is washed away in the elbow, the difficult problem of run duration dust stratification, stifled foreign material; Increase the phenomenon that auxiliary power consumption increases at run duration pressure fan resistance thereby eliminated steam air heater; Realize that the fault-free in the unit running process switches, do not need the blower fan of stopping transport, can be used as the effective means of wind and secondary wind operation adjustment, help pressure fan and go out the equilibrium of forces adjustment.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1, it also is the duty schematic top plan view of heating surface bank of the present invention, wherein Fig. 2 (a) is the duty schematic top plan view in winter, Fig. 2 (b) is the duty schematic top plan view in summer, Fig. 2 (c) be spring and autumn the duty schematic top plan view, wherein arrow is represented air-flow direction.
The specific embodiment
Below in conjunction with accompanying drawing invention is described in more detail.
As shown in Figure 1, frameless rotary steam air heater of exempting to dismantle, be included in the heating surface bank 7 of 3 the outer fin reinforcings that evenly distribute in the air channel 6, the two ends of each heating surface bank 7 respectively with the top of the bottom of heavy wall admission collection case 8 corresponding in the air channel 6 and the hydrophobic collection case 5 of heavy wall fixedly conducting be connected, the top of this heavy wall admission collection case 8 is with the connection that is conducted of the end of vertical heavy wall steam inlet pipe 12 as the rotation front axle, vertical heavy wall steam inlet pipe 12 runs through preceding swivel bearing 9 and the two interference fit that is fixed on 6 tops, air channel, the other end conducting of vertical heavy wall steam inlet pipe 12 connects steam admission side counter flange 13, be provided with the hermetically sealed rotating disc of admission end mechanism 11 around heavy wall steam inlet pipe 12 outer walls in addition above preceding swivel bearing 9, the hermetically sealed rotating disc of admission end mechanism 11 is provided with hand turnover mechanism 10; And the bottom of the hydrophobic collection case 5 of heavy wall is with the connection that is conducted of the end of heavy wall drain pipe 3 as the rotation rear axle, heavy wall drain pipe 3 runs through back swivel bearing 4 and the two interference fit that is fixed on 6 bottoms, air channel, the other end conducting of heavy wall drain pipe 3 connects hydrophobic side counter flange 1, is provided with the hermetically sealed mechanism 2 in hydrophobic side around heavy wall drain pipe 3 outer walls in addition below the swivel bearing 4 of back.Described heating surface bank 7 is frameless self supporting structure, and 4 shape equal diameter helical fin of the same size heating surface banks 7 that connected by vertically concordant from top to bottom and conducting longitudinally constitute, the central axis of heating surface bank 7 is a vertical direction, and the heat-transfer pipe in the heating surface bank 7 is sparse arrangement.The hermetically sealed mechanism in the hermetically sealed rotating disc of described admission end mechanism 11 and hydrophobic side 2 inside are provided with the labyrinth sealing system.Described hand turnover mechanism 10 is substituted by electric turnover mechanism.As shown in Figure 2, described heating surface bank 7 in the winter time the time its heating surface keep vertical with the air-flow direction in the air channel, its heating surface is with the air-flow direction keeping parallelism in the air channel when summer, spring and autumn its heating surface keep default angle of inclination with the air-flow direction in the air channel.Described heating surface bank 7 adopts spiral fin coil or the boiler carbon constructional quality steel and the rolling spiral fin coil that is composited of aluminium of welding.
Operation principle of the present invention is: hot vapour is introduced heavy wall steam inlet pipe 12 by steam admission side counter flange 13, distribute to heating surface bank 7 by heavy wall admission collection case 8, in the heating surface bank 7 of heating surface bank 7 and the air channel 6 after the flow air heat exchange, superheated steam heat release successively is saturated vapor and saturation water, is drawn by heavy wall drain pipe 3.
Claims (6)
1. frameless rotary steam air heater of exempting to dismantle, it is characterized in that: the heating surface bank (7) that is included in even distribution 3-8 outer fin reinforcing in the air channel (6), the bottom of the heavy wall admission collection case (8) of the interior correspondence in same respectively air channels, the two ends of each heating surface bank (7) (6) and the top of the hydrophobic collection case of heavy wall (5) fixedly conducting are connected, the top of this heavy wall admission collection case (8) is with the connection that is conducted of the end of vertical heavy wall steam inlet pipe (12) as the rotation front axle, vertical heavy wall steam inlet pipe (12) runs through preceding swivel bearing (9) and the two interference fit that is fixed on top, air channel (6), the other end conducting of vertical heavy wall steam inlet pipe (12) connects steam admission side counter flange (13), be provided with the hermetically sealed rotating disc of admission end mechanism (11) in preceding swivel bearing (9) top around heavy wall steam inlet pipe (12) outer wall in addition, the hermetically sealed rotating disc of admission end mechanism (11) is provided with hand turnover mechanism (10); And the bottom of the hydrophobic collection case of heavy wall (5) is with the connection that is conducted of the end of heavy wall drain pipe (3) as the rotation rear axle, heavy wall drain pipe (3) runs through back swivel bearing (4) and the two interference fit that is fixed on bottom, air channel (6), the other end conducting of heavy wall drain pipe (3) connects hydrophobic side counter flange (1), is provided with the hermetically sealed mechanism in hydrophobic side (2) in back swivel bearing (4) below around heavy wall drain pipe (3) outer wall in addition.
2. frameless rotary steam air heater of exempting to dismantle according to claim 1, it is characterized in that: described heating surface bank (7) is frameless self supporting structure, and 2-4 the shape equal diameter helical fin of the same size heating surface bank (7) that is connected by vertically concordant from top to bottom and conducting longitudinally constitutes, the central axis of heating surface bank (7) is a vertical direction, and the heat-transfer pipe in the heating surface bank (7) is sparse arrangement.
3. according to claim 1 or the described frameless rotary steam air heater of exempting to dismantle of claim 2, it is characterized in that: hermetically sealed mechanism of the hermetically sealed rotating disc of described admission end mechanism (11) and hydrophobic side (2) inside is provided with the labyrinth sealing system.
4. according to claim 1 or the described frameless rotary steam air heater of exempting to dismantle of claim 2, it is characterized in that: described hand turnover mechanism (10) is substituted by electric turnover mechanism.
5. according to claim 1 or the described frameless rotary steam air heater of exempting to dismantle of claim 2, it is characterized in that: described heating surface bank (7) in the winter time the time its heating surface keep vertical with the air-flow direction in the air channel, its heating surface is with the air-flow direction keeping parallelism in the air channel when summer, spring and autumn its heating surface keep default angle of inclination with the air-flow direction in the air channel.
6. according to claim 1 or the described frameless rotary steam air heater of exempting to dismantle of claim 2, it is characterized in that: described heating surface bank (7) adopts spiral fin coil or the boiler carbon constructional quality steel and the rolling spiral fin coil that is composited of aluminium of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100981422A CN102162647A (en) | 2011-04-19 | 2011-04-19 | Frameless detachment-free rotary air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100981422A CN102162647A (en) | 2011-04-19 | 2011-04-19 | Frameless detachment-free rotary air heater |
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| Publication Number | Publication Date |
|---|---|
| CN102162647A true CN102162647A (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100981422A Pending CN102162647A (en) | 2011-04-19 | 2011-04-19 | Frameless detachment-free rotary air heater |
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| CN (1) | CN102162647A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778166A (en) * | 2012-07-06 | 2012-11-14 | 西安交通大学 | Sealing device on steam leading-in tube side of rotary type boiler air heater |
| CN102777926A (en) * | 2012-08-10 | 2012-11-14 | 山东泓奥电力科技有限公司 | Intelligent rotary air heater on basis of comprehensive temperature control at cold end of air preheater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100653Y (en) * | 2007-10-11 | 2008-08-13 | 邢传 | Energy-saving warmer |
| CN101576267A (en) * | 2009-06-09 | 2009-11-11 | 西安交通大学 | Rotational structure of boiler rotary air heater |
| CN201425315Y (en) * | 2009-04-29 | 2010-03-17 | 无锡市华通环保设备有限公司 | Energy-saving rotary louver-type steam air heater |
| CN201496986U (en) * | 2009-07-30 | 2010-06-02 | 山东泓奥电力科技有限公司 | Energy-saving anti-clogging air heater |
-
2011
- 2011-04-19 CN CN2011100981422A patent/CN102162647A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100653Y (en) * | 2007-10-11 | 2008-08-13 | 邢传 | Energy-saving warmer |
| CN201425315Y (en) * | 2009-04-29 | 2010-03-17 | 无锡市华通环保设备有限公司 | Energy-saving rotary louver-type steam air heater |
| CN101576267A (en) * | 2009-06-09 | 2009-11-11 | 西安交通大学 | Rotational structure of boiler rotary air heater |
| CN201496986U (en) * | 2009-07-30 | 2010-06-02 | 山东泓奥电力科技有限公司 | Energy-saving anti-clogging air heater |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778166A (en) * | 2012-07-06 | 2012-11-14 | 西安交通大学 | Sealing device on steam leading-in tube side of rotary type boiler air heater |
| CN102778166B (en) * | 2012-07-06 | 2013-12-04 | 西安交通大学 | Sealing device on steam leading-in tube side of rotary type boiler air heater |
| CN102777926A (en) * | 2012-08-10 | 2012-11-14 | 山东泓奥电力科技有限公司 | Intelligent rotary air heater on basis of comprehensive temperature control at cold end of air preheater |
| CN102777926B (en) * | 2012-08-10 | 2015-05-20 | 山东泓奥电力科技有限公司 | Intelligent rotary air heater on basis of comprehensive temperature control at cold end of air preheater |
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| CB02 | Change of applicant information |
Address after: 710049 Xianning Road, Shaanxi, China, No. 28, No. Applicant after: Xi'an Jiaotong University Applicant after: Qingdao Daneng Environmental Protection Equipment Incorporated Company Address before: 710049 Xianning Road, Shaanxi, China, No. 28, No. Applicant before: Xi'an Jiaotong University Applicant before: Qingdao Daneng Environmental Protection Equipment Co., Ltd. |
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Application publication date: 20110824 |