CN103712232A - Air pre-heater for energy-saving boiler - Google Patents
Air pre-heater for energy-saving boiler Download PDFInfo
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- CN103712232A CN103712232A CN201310735922.2A CN201310735922A CN103712232A CN 103712232 A CN103712232 A CN 103712232A CN 201310735922 A CN201310735922 A CN 201310735922A CN 103712232 A CN103712232 A CN 103712232A
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- heat exchanger
- bobbin carriage
- exchanger tube
- antiwear casing
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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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Supply (AREA)
Abstract
The invention discloses an air pre-heater for an energy-saving boiler. Heat-exchanging pipes are threaded pipes. Abrasion-resistant sleeves are inserted from inlets of the threaded pipes. The upper portions of the abrasion-resistant sleeves protrude out of inlets of the heat-exchanging pipes. The abrasion-resistant sleeves are fixed to the heat-exchanging pipes through concrete between the abrasion-resistant sleeves and the heat-exchanging pipes, the lower end of the concrete between every two adjacent abrasion-resistant sleeves is connected with an upper separation board, and the two sides of the concrete are connected to the outer walls of the corresponding two adjacent abrasion-resistant sleeves. Compared with the prior art, the air pre-heater for the energy-saving boiler is high in heat efficiency, long in service life, simple in structure and technology, flexible in arrangement and the like.
Description
Technical field
The present invention relates to a kind of boiler air preheater.
Background technology
Boiler air preheater is the common part of water pipe coal-burning boiler system, because of its have energy-conservation, improve boiler efficiency, reduce the effects such as exhaust gas temperature, so the utmost point is subject to users' welcome.Existing boiler air preheater mainly divides steel tube air preheater and cast iron pipe air preheater, at present domesticly mainly take steel tube air preheater as main, it mainly includes smoke box, bobbin carriage, shock ring, heat exchanger tube, upper spacer, median septum, lower clapboard, access door and shoot door, the upper end of described smoke box is connected the bobbin carriage communicating with it by bolt, gas approach is established at bobbin carriage top, and the shock ring corresponding with it established in bobbin carriage and the bottom that is positioned at gas approach; Some vertical heat exchanger tubes are established in the inside of described bobbin carriage, and these heat exchanger tubes are fixed in bobbin carriage by upper spacer, median septum and the lower clapboard being distributed in bobbin carriage; One side of described bobbin carriage is established air intlet, and the air outlet slit of bobbin carriage is located at the opposite side position near air outlet slit; One side of above-mentioned smoke box is established exhanst gas outlet, in the access hole on it, establishes access door, establishes shoot door in cleaning door.During practical application, the high-temperature flue gas that boiler is discharged first after economizer the gas approach by bobbin carriage enter in heat exchanger tube and carry out heat exchange with heat exchanger tube, exhanst gas outlet by smoke box one side leads to rear portion equipment, air blast generation air is entered by the air intake of bobbin carriage one side, with the heat exchanger tube heat exchange of having heated, to improve after air themperature, through air outlet slit, be connected to fire grate; The deficiency of existing boiler air preheater is: its heat exchanger tube adopts thin-walled light pipe, heat exchange efficiency is low, steel pipe wearing and tearing are large, service life is short, often change heat exchanger tube, not only affect the normal operation of boiler, and increased production cost and workman's labour intensity, to sum up, existing boiler air preheater can not meet user's user demand.
Summary of the invention
The object of the present invention is to provide a kind of stroke of not only can prolong smoke discharging, reduce flue gas row's speed and exhaust temperature, the thermal efficiency is high, longer service life, and structure, technique are simple, flexible arrangement, floor space is little, be convenient to maintenance, meet the power economized boiler air preheater of user's user demand.
The present invention sets up abrasionproof parts and changes flue gas stroke on the basis of existing boiler air preheater, the present invention is except heat exchanger tube part, other parts mechanism is basic roughly the same with existing boiler air preheater, the upper end that is smoke box is connected the bobbin carriage communicating with it by bolt, gas approach is established at bobbin carriage top, and the shock ring corresponding with it established in bobbin carriage and the bottom that is positioned at gas approach; Some vertical heat exchanger tubes are established in the inside of described bobbin carriage, and these heat exchanger tubes are fixed in bobbin carriage by upper spacer, median septum and the lower clapboard being distributed in bobbin carriage; One side of described bobbin carriage is established air intlet, and the air outlet slit of bobbin carriage is located at the opposite side position near air outlet slit; One side of above-mentioned smoke box is established exhanst gas outlet, in the access hole on it, establishes access door, establishes shoot door in cleaning door; Wherein, described heat exchanger tube is screwed pipe, by its import, insert an Antiwear casing, the top of this Antiwear casing protrudes from the import of described heat exchanger tube, be that above-mentioned Antiwear casing is comprised of two sections of metal tubes that are connected as a single entity, the epimere pipe of Antiwear casing is that maximum outside diameter is greater than the conical pipe that heat exchanger tube internal diameter, minimum outer diameter are less than heat exchanger tube internal diameter, the hypomere pipe of Antiwear casing is the straight tube that external diameter is identical with epimere pipe minimum outer diameter, and the hypomere pipe of Antiwear casing and the part of epimere pipe stretch into the inside of heat exchanger tube; Described Antiwear casing is fixed on heat exchanger tube by the concrete between them, and concrete lower end and upper spacer between every adjacent two Antiwear casings join, and both sides respectively adjacent two Antiwear casing outer walls corresponding with it join.
The present invention is in actual application, flue gas is identical with conventional boiler heat exchanger with the flow direction of air, but heat exchanger tube of the present invention is screwed pipe, after the flue gas forming after coal combustion is entered by gas approach, flue gas is realized collision and speed change in heat exchanger tube, making it in heat exchanger tube inside, be Scroll-tupe flows, so not only extend the mobile stroke in heat exchanger tube, lower concentration and the mass rate of emission of flue gas, and reduction smog discharge temperature, improve flue gas heat exchange efficiency, and Antiwear casing is set up in heat exchanger tube import, can greatly reduce the wearing and tearing of heat exchanger tube, extended the service life of equipment.
The present invention compared with prior art tool has the following advantages:
1, prolong smoke is discharged stroke, reduces flue gas row's speed and exhaust temperature, improves the thermal efficiency;
2, reduce the wearing and tearing of heat exchanger tube, make service life of equipment longer, reduce production costs, alleviate labor strength;
3, structure, technique are simple, process simple and easyly, are convenient to maintenance, meet user's user demand.
accompanying drawing explanationfig. 1 is part section simplified schematic diagram of the present invention.
Fig. 2 is the structural representation of heat exchanger tube of the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 1.
the specific embodimentas depicted in figs. 1 and 2, the upper end of smoke box 1 is connected the bobbin carriage 2 communicate with it by bolt, and gas approach 3 is established at bobbin carriage top, and the shock ring corresponding with it 4 established in bobbin carriage bottom interior and that be positioned at gas approach; Some vertical heat exchanger tubes 5 are established in the inside of described bobbin carriage, these heat exchanger tubes by be distributed in upper spacer 6 in bobbin carriage, median septum 7 and under every 8 plates, be fixed in bobbin carriage; One side of described bobbin carriage is established air intlet 9, and the air outlet slit of bobbin carriage is located at the opposite side position near air outlet slit 10; One side of above-mentioned smoke box is established exhanst gas outlet 11, establishes access door 12 in the access hole on it, establishes shoot door 13 in cleaning door; Described heat exchanger tube is screwed pipe, by its import, insert an Antiwear casing 14, the top of this Antiwear casing protrudes from the import of described heat exchanger tube, described Antiwear casing is fixed on heat exchanger tube by the concrete 15 between them, concrete lower end and upper spacer between every adjacent two Antiwear casings join, and both sides respectively adjacent two Antiwear casing outer walls corresponding with it join.
As shown in Figure 3, Antiwear casing 14 is comprised of two sections of metal tubes that are connected as a single entity, the epimere pipe 14-1 of Antiwear casing is that maximum outside diameter is greater than heat exchanger tube 5 internal diameters, minimum outer diameter is less than the conical pipe of heat exchanger tube internal diameter, the hypomere pipe 14-2 of Antiwear casing is the straight tube that external diameter is identical with epimere pipe minimum outer diameter, the hypomere pipe of Antiwear casing and the part of epimere pipe stretch into the inside of heat exchanger tube, Antiwear casing is fixed on heat exchanger tube by the concrete 15 between them, concrete lower end and upper spacer 6 between every adjacent two Antiwear casings join, both sides respectively adjacent two Antiwear casing outer walls corresponding with it join.
Claims (2)
1. a power economized boiler air preheater, comprise smoke box, bobbin carriage, shock ring, heat exchanger tube, upper spacer, median septum, lower clapboard, access door, shoot door, Antiwear casing and concrete, the upper end of smoke box is connected the bobbin carriage communicating with it by bolt, gas approach is established at bobbin carriage top, and the shock ring corresponding with it established in bobbin carriage and the bottom that is positioned at gas approach; Some vertical heat exchanger tubes are established in the inside of described bobbin carriage, and these heat exchanger tubes are fixed in bobbin carriage by upper spacer, median septum and the lower clapboard being distributed in bobbin carriage; One side of described bobbin carriage is established air intlet, and the air outlet slit of bobbin carriage is located at the opposite side position near air outlet slit; One side of above-mentioned smoke box is established exhanst gas outlet, in the access hole on it, establishes access door, establishes shoot door in cleaning door; It is characterized in that: described heat exchanger tube is screwed pipe, by its import, insert an Antiwear casing, the top of this Antiwear casing protrudes from the import of described heat exchanger tube, described Antiwear casing is fixed on heat exchanger tube by the concrete between them, concrete lower end and upper spacer between every adjacent two Antiwear casings join, and both sides respectively adjacent two Antiwear casing outer walls corresponding with it join.
2. power economized boiler air preheater according to claim 1, it is characterized in that: described Antiwear casing is comprised of two sections of metal tubes that are connected as a single entity, the epimere pipe of Antiwear casing is that maximum outside diameter is greater than the conical pipe that heat exchanger tube internal diameter, minimum outer diameter are less than heat exchanger tube internal diameter, the hypomere pipe of Antiwear casing is the straight tube that external diameter is identical with epimere pipe minimum outer diameter, and the hypomere pipe of Antiwear casing and the part of epimere pipe stretch into the inside of heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310735922.2A CN103712232A (en) | 2013-12-29 | 2013-12-29 | Air pre-heater for energy-saving boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310735922.2A CN103712232A (en) | 2013-12-29 | 2013-12-29 | Air pre-heater for energy-saving boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103712232A true CN103712232A (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310735922.2A Pending CN103712232A (en) | 2013-12-29 | 2013-12-29 | Air pre-heater for energy-saving boiler |
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| CN (1) | CN103712232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222118A (en) * | 2014-06-04 | 2016-01-06 | 川崎重工业株式会社 | The replacing options of boiler and boiler heat-transfer pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092716U (en) * | 1991-01-04 | 1992-01-08 | 哈尔滨工业大学 | Horizontal hot-blast stove |
| CN2213921Y (en) * | 1994-05-13 | 1995-11-29 | 马俊续 | Antiseptic and anti-wear drivepipe of air pre-heater |
| CN201983288U (en) * | 2011-01-27 | 2011-09-21 | 太原锅炉集团有限公司 | Stand-pipe type abrasion-resistant air pre-heater of coal-fired boiler |
| CN103017191A (en) * | 2012-11-30 | 2013-04-03 | 大连锅炉厂有限公司 | Wear-proof device for tubular air preheater |
| CN203273934U (en) * | 2013-05-17 | 2013-11-06 | 自贡市东方容器配套有限公司 | Air preheater tube box abrasion preventing structure |
| CN203757756U (en) * | 2013-12-29 | 2014-08-06 | 大连旅顺锅炉有限公司 | Energy-saving air pre-heater of boiler |
-
2013
- 2013-12-29 CN CN201310735922.2A patent/CN103712232A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092716U (en) * | 1991-01-04 | 1992-01-08 | 哈尔滨工业大学 | Horizontal hot-blast stove |
| CN2213921Y (en) * | 1994-05-13 | 1995-11-29 | 马俊续 | Antiseptic and anti-wear drivepipe of air pre-heater |
| CN201983288U (en) * | 2011-01-27 | 2011-09-21 | 太原锅炉集团有限公司 | Stand-pipe type abrasion-resistant air pre-heater of coal-fired boiler |
| CN103017191A (en) * | 2012-11-30 | 2013-04-03 | 大连锅炉厂有限公司 | Wear-proof device for tubular air preheater |
| CN203273934U (en) * | 2013-05-17 | 2013-11-06 | 自贡市东方容器配套有限公司 | Air preheater tube box abrasion preventing structure |
| CN203757756U (en) * | 2013-12-29 | 2014-08-06 | 大连旅顺锅炉有限公司 | Energy-saving air pre-heater of boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222118A (en) * | 2014-06-04 | 2016-01-06 | 川崎重工业株式会社 | The replacing options of boiler and boiler heat-transfer pipe |
| CN105222118B (en) * | 2014-06-04 | 2018-10-16 | 川崎重工业株式会社 | The replacing options of boiler and boiler heat-transfer pipe |
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Application publication date: 20140409 |