CN203231289U - Low-temperature economizer of power plant boiler - Google Patents
Low-temperature economizer of power plant boiler Download PDFInfo
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- CN203231289U CN203231289U CN 201320145187 CN201320145187U CN203231289U CN 203231289 U CN203231289 U CN 203231289U CN 201320145187 CN201320145187 CN 201320145187 CN 201320145187 U CN201320145187 U CN 201320145187U CN 203231289 U CN203231289 U CN 203231289U
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Abstract
The utility model discloses a low-temperature economizer of a power plant boiler. The low-temperature economizer comprises a connected box, heated face pipe rows and the soot blowing portion. The connected box is divided into an upper connected box and a lower connected box, wherein the lower connected box is located at the lower portions of the heated face pipe rows and connected with a water inlet of the low-temperature economizer, and the upper connected box is located at the upper portions of the heated face pipe rows and connected with a water outlet of the low-temperature economizer. Each heated face pipe row is formed by connecting 16 spiral flat pipelines and a plurality of connecting elbows through threads, wherein the connecting elbows are wrapped by anti-abrasion parts. The main body of the soot blowing portion is arranged on an installing platform outside a boiler flue, and sound waves generated by a sound wave generator are transmitted to the flue through a trumpet. Accumulated soot and corrosion of the heated face of the low-temperature economizer can be reduced, and the quick disassembly of abraded pipe sections and installation and replacement of novel pipe sections are achieved in the overhaul process.
Description
Technical field
The utility model relates to a kind of boiler of power plant low-level (stack-gas) economizer.
Background technology
Along with expanding economy, society to the demand of electric power also in continuous increase.At present, Jue Dabufen supply of electric power comes from thermal power generation.In modern boiler, low-level (stack-gas) economizer is adopted by the heat power plant boiler of various models as important convection heating surface.But, because the in short supply and skewness of coal resources, the fuel that many power plant use is the higher colm of dust burdening, in combustion process, can produce a large amount of ash contents, row causes serious wearing and tearing to the low-level (stack-gas) economizer pipe, cause the economizer pipeline to leak, even cause pipe explosion accident, the reduction of power plant's exhaust gas temperature and the raising of boiler thermal output are caused adverse effect.
In the maintenance process of low-level (stack-gas) economizer, need earlier heating surface piping to be carried out wall thickness measuring, change the pipeline section that wearing and tearing exceed standard then, the existing more employing fin tube structure of boiler low-temperature economizer, pipe row is an integral body that is welded by some pipeline sections, changes the wearing and tearing pipeline and comparatively bothers.
Summary of the invention
The purpose of this utility model is exactly at the problems referred to above, and a kind of boiler of power plant low-level (stack-gas) economizer is provided, and can reduce fouling of heating surface and corrosion, and realizes changing fast in the maintenance process purpose of wearing and tearing pipeline section.
For achieving the above object, technical solution of the present utility model is: a kind of boiler of power plant low-level (stack-gas) economizer comprises header, panel-pipe of heating surface and blows grey part.Header is divided into two up and down, and lower collecting box is positioned at the panel-pipe of heating surface bottom, is connected with the low-level (stack-gas) economizer water inlet, and upper header is positioned at panel-pipe of heating surface top, connects the low-level (stack-gas) economizer delivery port; Each panel-pipe of heating surface is made up of 16 pipelines and some connecting bends, is coated with the abrasionproof parts on the connecting bend; The main body sonic generator that blows the ash part is arranged in the outer mounting platform of boiler flue, through blowing grey hole sonic transmissions is arrived flue by loudspeaker.
The connected mode of above-mentioned heating surface piping and connecting bend is for detachably being threaded, and fills with polytetrafluoroethylraw raw material band in the junction.
The spiral flat tube of above-mentioned heating surface piping for adopting the 20G steel to be processed into.
The abrasionproof parts of above-mentioned connecting bend outer wrapping are the anti-grinding ring of nickel-base alloy.
Feedwater enters low-level (stack-gas) economizer and enters upper header from delivery port from water inlet through lower collecting box, and helical flow is made in feedwater in pipeline, and flue gas washes away heating surface from top to bottom, forms countercurrent flow.Acoustic wave ash ejector by blow grey hole with sonic transmissions in flue, the dust stratification on the heating surface is subjected to that the dilatational wave that certain frequency alternately changes draws repeatedly, the pressure effect, comes off because fatigue is loose, takes away with flue gas stream.When low-level (stack-gas) economizer pipe row is overhauled, be threaded by dismounting, the serious wear pipeline section is separated with connecting bend and more renew pipeline section.Be wrapped in the outer anti-grinding ring of the elbow corridor that can remove smoke, make the flow field more even, reduce the wearing and tearing near the connecting bend at furnace wall place.Compare with light pipe, the feedwater flow velocity is fast in the spiral flat tube structure of the present utility model, and turbulent extent is big, and pipe row takes up space little, the design that detachably is threaded can be dismantled pipeline section and connecting bend in can making and overhauling quickly and easily, and changes the pipeline section of serious wear.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is connecting bend and outsourcing abrasionproof coil structures figure.
Among the figure, 1 is lower collecting box, and 2 is water inlet, and 3 is upper header, and 4 is delivery port, and 5 is panel-pipe of heating surface, and 6 is pipeline section, and 7 is furnace wall, and 8 is connecting bend, and 9 are anti-grinding ring, and 10 is sonic generator, and 11 is the sonic generator mounting platform, and 12 is loudspeaker, and 13 for blowing grey hole.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
As Fig. 1, shown in Figure 2, present embodiment comprises lower collecting box 1, upper header 3, panel-pipe of heating surface 5, sonic generator 10.Panel-pipe of heating surface 5 is made up of 16 pipeline sections 6 and some connecting bends 8, and feedwater enters pipeline section 6 through lower collecting box 1 from water inlet 2, and flows out from upper header 3 through delivery port 4, forms countercurrent flow with the flue gas that flows from top to bottom.For detachably being threaded, fill by polytetrafluoroethylraw raw material band between the pipeline section 6 oval flat tube for being processed by the 20G steel, pipeline section 4 and connecting bend 6.Connecting bend 8 is wrapped with the anti-grinding ring 9 that nickel-base alloy is processed into, the corridor that can remove smoke, and uniform flow field reduces the elbow wearing and tearing.Sonic generator 10 is arranged in sonic generator mounting platform 11, the sound wave that produces enters flue through loudspeaker 12 by the grey hole 13 of blowing that is arranged on the furnace wall 7, utilize acoustic vibration and the tired effect that adds up repeatedly, small soot particle is difficult near the dust stratification face, the dust destruction that is deposited on the heating surface is peeled off, thereby reach the purpose of deashing.When low-level (stack-gas) economizer overhauled, quick-detach was by the pipeline section that is threaded 6 and connecting bend 8 soon, and the pipeline section 6 of serious wear is changed.
Claims (3)
1. boiler of power plant low-level (stack-gas) economizer is characterized in that: it is by header, panel-pipe of heating surface and blow the ash part and form; Lower collecting box is positioned at the panel-pipe of heating surface bottom, is connected with the low-level (stack-gas) economizer water inlet, and upper header is positioned at panel-pipe of heating surface top, is connected with the low-level (stack-gas) economizer delivery port; Each panel-pipe of heating surface is made up of by being threaded 16 pipelines and some connecting bends, is coated with the abrasionproof parts on the connecting bend; The main body sonic generator that blows the ash part is arranged in the outer mounting platform of boiler flue, and sound wave is transferred to boiler flue through loudspeaker.
2. boiler of power plant low-level (stack-gas) economizer according to claim 1 is characterized in that: the spiral flat tube that described pipeline section processes for the 20G steel.
3. boiler of power plant low-level (stack-gas) economizer according to claim 1 is characterized in that: the abrasionproof parts of described connecting bend are the anti-grinding ring of nickel-base alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145187 CN203231289U (en) | 2013-03-28 | 2013-03-28 | Low-temperature economizer of power plant boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145187 CN203231289U (en) | 2013-03-28 | 2013-03-28 | Low-temperature economizer of power plant boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203231289U true CN203231289U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320145187 Expired - Fee Related CN203231289U (en) | 2013-03-28 | 2013-03-28 | Low-temperature economizer of power plant boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN203231289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871101A (en) * | 2017-01-25 | 2017-06-20 | 中国科学院广州能源研究所 | High-efficiency abrasion-proof low-level (stack-gas) economizer |
-
2013
- 2013-03-28 CN CN 201320145187 patent/CN203231289U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871101A (en) * | 2017-01-25 | 2017-06-20 | 中国科学院广州能源研究所 | High-efficiency abrasion-proof low-level (stack-gas) economizer |
| CN106871101B (en) * | 2017-01-25 | 2019-07-26 | 中国科学院广州能源研究所 | High-efficiency abrasion-proof low-level (stack-gas) economizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: North China Electric Power University (Baoding) Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140328 |