CN2180892Y - Heat pipe air preheater for boiler of power station - Google Patents
Heat pipe air preheater for boiler of power station Download PDFInfo
- Publication number
- CN2180892Y CN2180892Y CN93239176U CN93239176U CN2180892Y CN 2180892 Y CN2180892 Y CN 2180892Y CN 93239176 U CN93239176 U CN 93239176U CN 93239176 U CN93239176 U CN 93239176U CN 2180892 Y CN2180892 Y CN 2180892Y
- Authority
- CN
- China
- Prior art keywords
- heat pipe
- heat
- pipe
- tube sheet
- air preheater
- 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
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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)
Abstract
The utility model provides an air pre-heater with heat pipes for boiler of power station, comprising box-shaped header components containing spoiler bars. The utility model is characterized in that heat-pipe connecting plates with heat-pipe bundles are arranged inside the box-shaped headers; one end of the heat pipe is fixed, and the other end of the heat pipe can be expanded along the lengthwise direction to form the header structure with detachable heat pipes. The utility model can use the residual heat and the exhausted smoke to preheat the combustion air entering into the boiler, the combustion condition of the boiler being improved, the fuel utilization rate being increased, and the exhausting loss of smoke being decreased. Simultaneously, the air leakage of the tail part of the boiler is cut down to prevent low-temperature corrosion, ash deposition and ash clogging.
Description
The utility model provides a kind of station boiler heat-pipe air preheater, is applicable to the transformation and the new design of 410t/h, 670t/h and above Capacity Power Plant Boilers equipment.
In existing station boiler, generally adopt two kinds of air preheaters of tubular type and swinging, because operation principle and version are limit, all there is shortcomings such as leaking out greatly, easily produce cold end corrosion, easy dust stratification, stifled ash.Though heat pipe is a kind of high-performance heat transfer components,,, still do not reach the desired state that is suitable for if body structure is unreasonable as the air preheater of element structure.
The purpose of this utility model is to provide a kind of channel structure of assembly type, and constitutes rational station boiler heat-pipe air preheater.
The utility model provides a kind of station boiler heat-pipe air preheater, comprise the frame bobbin carriage assembly that contains the choked flow bar, be provided with the heat pipe connecting plate in the frame bobbin carriage, the heat pipe tube bank is installed on the heat pipe connecting plate, one end of heat pipe is fixedly connected, the other end can expand along its length, forms the channel structure of detachable heat pipe thus.The evaporator section of heat pipe places boiler flue in the utility model, and the section of condensing is corresponding with the boiler air intlet, thereby utilizes the smoke discharging residual heat of station boiler, and preheating enters the combustion air of boiler, reduces simultaneously and leaks out, and prevents cold end corrosion and dust stratification, stifled ash.
Above-mentioned heat pipe connecting plate comprises upper perforated plate, middle tube sheet and card tube sheet, and upper perforated plate and card tube sheet are connected with the two ends of frame bobbin carriage respectively, and middle tube sheet is connected in the middle part of frame bobbin carriage, corresponding boring on upper perforated plate and the middle tube sheet.Upper perforated plate, middle tube sheet and card tube sheet can or adopt alternate manner to be connected with the welding of frame bobbin carriage.
Above-mentioned heat pipe comprises vacuum casting, and the two ends of shell are by taper pin plug that is fixed with one with it and the sealing of screw rod plug.Be filled with an amount of working media in the vacuum casting, the certain fin of spacing distance is arranged on the shell, there is cone-shaped sealing ring at the shell middle part, thereby heat pipe is divided into the evaporator section and the section of condensing.Working media is water or other liquid that is fit to that adds corrosion inhibiter, and the back sealing is evacuated in the pipe.When heat pipe evaporator section was heated, water condensed after the heat release of the flow direction section of condensing from thermal source evaporator section heat absorption vaporization, returns evaporator section and finish continuous circulation under the gravity effect, so comes and goes, and heat constantly reaches the low-temperature receiver section from heat source side.
Institute's perforate is a bellmouth on the above-mentioned middle tube sheet, and the cone-shaped sealing ring at bellmouth and heat pipe middle part closely cooperates.Thereby boiler smoke and air two media are not had mutually sews.
The threaded rod axle of the screw rod plug of above-mentioned heat pipe passes institute's perforate on the upper perforated plate and places outside it, and placing on the outer threaded rod axle of upper perforated plate has packing ring and spring, and spring is by the nut pretension.During the heat pipe expanded by heating, spring expands thereupon, keeps giving tight power, thus in guaranteeing on the tube sheet the bellmouth of opening and the cone-shaped sealing ring air-tightness of combining closely.
Above-mentioned card tube sheet is a comb shape, is made up of plate body and plate tooth, and the taper pin plug of heat pipe all is stuck between the plate tooth, thus fixedly between heat pipe in length and breadth to pitch, and make the heat pipe can free wxpansion.
When above-mentioned heat pipe length surpasses certain size, on the appropriate location of bobbin carriage, be fixed with anti-vibration plate, corresponding boring on the plate, heat pipe is stuck in the hole.Anti-vibration plate is used to change the intrinsic frequency of heating surface, prevents that Karman vortex and sound from shaking and cause resonance.
The choked flow bar is arranged on the appropriate location of frame bobbin carriage in the utility model, make one with the frame bobbin carriage, the choked flow bar can prevent that the local cigarette speed of fluid media (medium) (flue gas or air) or air velocity are too high and make heat pipe be subjected to high velocity air wearing and tearing or short circuit, and the heating surface usage factor is improved.
The utlity model has following characteristics:
1. the utility model utilizes the station boiler smoke discharging residual heat, and preheating enters the combustion air of boiler, improves boiler combustion, improves fuel availability, reduces flue gas loss, reduces boiler tail simultaneously and leaks out, and prevents cold end corrosion and dust stratification, stifled ash.Thereby improve boiler unit reliability and safety and economic operation level, reduce maintenance load, shown the unrivaled superior function of conventional air preheater.
2. use of the present utility model can be with the air leakage coefficient of the air preheater of the boiler △ X=0.03(tubular type from the design specification regulation) and △ X=0.02(widely different rotatable) and actual operating mode under every grade of △ X=0.05～0.12 or higher △ X=0～0.015 that is reduced to.
3. the utility model transportation, installation, maintenance are conveniently.
Describe an embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 structural representation of the present utility model.
Fig. 2 is the enlarged drawing at Fig. 1 I place.
Fig. 3 is the enlarged drawing at Fig. 1 II place.
Fig. 4 is the enlarged drawing at Fig. 1 III place.
Fig. 5 is the enlarged drawing at Fig. 1 IV place.
The structural representation of Fig. 6 comb shape card tube sheet.
The structural representation of Fig. 7 anti-vibration plate.
Accompanying drawing 1～Fig. 7 has described an embodiment of the present utility model.It comprises the frame bobbin carriage (2) that contains choked flow bar (1), and choked flow bar (1) is arranged on the appropriate location of frame bobbin carriage (2), makes one with frame bobbin carriage (2).In frame bobbin carriage (2), be provided with upper perforated plate (3), middle tube sheet (4) and card tube sheet (5), upper perforated plate (3) and card tube sheet (5) are welded to connect with the both ends of frame bobbin carriage (2) respectively, middle tube sheet (4) is welded to connect the middle part in frame bobbin carriage (2), upper perforated plate (3) and middle tube sheet (4) are gone up correspondence and are drilled with hole (6), above-mentioned upper perforated plate (3), the heat pipe tube bank is housed on middle tube sheet (4) and the card tube sheet (5), heat pipe (7) comprises vacuum casting (8), the two ends of vacuum casting (8) are sealed by plug (9) (10), plug (9) (10) is welded to connect with shell (8), the taper pin (11) that is fixed with one is with it arranged on the plug (9), screw rod formed integrally therewith (12) is arranged on the plug (10), be filled with an amount of working media (13) in the vacuum casting (8), working media (13) is for being added with the water of corrosion inhibiter, the certain fin of spacing distance (14) is arranged on the shell (8), fin (14) is a helical fin, fin (14) adopts high-frequency welding with shell (8), and there is cone-shaped sealing ring (15) at shell (8) middle part.Institute's perforate (6) is a bellmouth on the middle tube sheet (4), and the cone-shaped sealing ring (15) at bellmouth and heat pipe (7) middle part closely cooperates, thereby flue gas and air dielectric are not leaked under the pressure reduction of operating condition mutually.The screw rod (12) of plug (10) passes the perforate (6) on the upper perforated plate (3) and places outside it, place on the outer screw rod (12) of upper perforated plate (3) packing ring (16) and spring (17) are arranged, spring (17) adopts spring steel wire to make, and spring (17) is by nut (18) pretension.Card tube sheet (5) is a comb shape, is made up of plate body and plate tooth formed integrally therewith, and the taper pin plug (9) of heat pipe (7) all is stuck between the plate tooth, thus fixedly between heat pipe (7) in length and breadth to pitch, and make the heat pipe (7) can free wxpansion.When heat pipe (7) length surpasses certain size, on the appropriate location of bobbin carriage (2), be fixed with anti-vibration plate (19), anti-vibration plate (19) goes up corresponding boring, and the heat pipe tube bank is stuck in the hole.
Claims (7)
1, a kind of station boiler heat-pipe air preheater, comprise the frame bobbin carriage assembly that contains the choked flow bar, it is characterized in that being provided with in the frame bobbin carriage heat pipe connecting plate, the heat pipe tube bank is installed on the heat pipe connecting plate, one end of heat pipe is fixed, the other end can expand along its length, forms the channel structure of detachable heat pipe thus.
2, station boiler heat-pipe air preheater according to claim 1, it is characterized in that described heat pipe comprises vacuum casting, the two ends of shell are by taper pin plug that is fixed with one with it and the sealing of screw rod plug, be filled with an amount of working media in the vacuum casting, the certain fin of spacing distance is arranged on the shell, and there is cone-shaped sealing ring at the shell middle part.
3, station boiler heat-pipe air preheater according to claim 1, it is characterized in that described connecting plate comprises upper perforated plate, middle tube sheet and card tube sheet, upper perforated plate and card tube sheet are connected with the two ends of frame bobbin carriage respectively, middle tube sheet is connected in the middle part of frame bobbin carriage, and corresponding boring is arranged on upper perforated plate and the middle tube sheet.
4, station boiler heat-pipe air preheater according to claim 1 is characterized in that institute's perforate is a bellmouth on the described middle tube sheet, and the cone-shaped sealing ring at bellmouth and heat pipe middle part closely cooperates.
5, station boiler heat-pipe air preheater according to claim 1, the threaded rod axle that it is characterized in that the screw rod plug of described heat pipe passes the perforate of upper perforated plate and places outside it, placing on the outer threaded rod axle of upper perforated plate has packing ring and spring, and spring is by the nut pretension.
6, station boiler heat-pipe air preheater according to claim 1 is characterized in that the card tube sheet is a comb shape, is made up of plate body and plate tooth formed integrally therewith, and the taper pin plug of heat pipe all is stuck between the plate tooth, thus fixedly between heat pipe in length and breadth to pitch.
7, station boiler heat-pipe air preheater according to claim 1 is characterized in that card has anti-vibration plate on the appropriate location of described heat pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93239176U CN2180892Y (en) | 1993-08-24 | 1993-08-24 | Heat pipe air preheater for boiler of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93239176U CN2180892Y (en) | 1993-08-24 | 1993-08-24 | Heat pipe air preheater for boiler of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2180892Y true CN2180892Y (en) | 1994-10-26 |
Family
ID=33813760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93239176U Expired - Lifetime CN2180892Y (en) | 1993-08-24 | 1993-08-24 | Heat pipe air preheater for boiler of power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2180892Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657695A (en) * | 2018-07-20 | 2020-01-07 | 青岛鑫众合贸易有限公司 | Design method of condensation end of heat pipe of power station boiler |
| CN110736372A (en) * | 2018-07-20 | 2020-01-31 | 青岛鑫众合贸易有限公司 | power station boiler heat pipe system |
-
1993
- 1993-08-24 CN CN93239176U patent/CN2180892Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657695A (en) * | 2018-07-20 | 2020-01-07 | 青岛鑫众合贸易有限公司 | Design method of condensation end of heat pipe of power station boiler |
| CN110736372A (en) * | 2018-07-20 | 2020-01-31 | 青岛鑫众合贸易有限公司 | power station boiler heat pipe system |
| CN110736371A (en) * | 2018-07-20 | 2020-01-31 | 青岛鑫众合贸易有限公司 | Heat pipe system arranged at intervals of power station boilers |
| CN110736371B (en) * | 2018-07-20 | 2020-12-22 | 泰州市露尔泰电热电器有限公司 | Heat pipe system arranged at intervals of power station boiler |
| CN110736372B (en) * | 2018-07-20 | 2021-10-22 | 安徽尚绿精谷网络科技有限公司 | Power station boiler heat pipe system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |