CN102607311A - Heat exchange base tube for direct air-cooling condenser - Google Patents
Heat exchange base tube for direct air-cooling condenser Download PDFInfo
- Publication number
- CN102607311A CN102607311A CN2012100594759A CN201210059475A CN102607311A CN 102607311 A CN102607311 A CN 102607311A CN 2012100594759 A CN2012100594759 A CN 2012100594759A CN 201210059475 A CN201210059475 A CN 201210059475A CN 102607311 A CN102607311 A CN 102607311A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- air
- parent tube
- base tube
- exchange base
- 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.)
- Pending
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a heat exchange base tube for a direct air-cooling condenser, which is applied to the exhaust-steam condensation field of turbines of thermal power plants, steam turbines in chemical and air separation industries and the like. The cross section of the heat exchange base tube (1) is shaped like a wedge and the size of the heat exchange base tube (1) is decreased along the flow direction of air. The heat exchange base tube for the direct air-cooling condenser is shaped like a wedge, the volume of hot air subjected to the air expansion is contained and the flow velocity of the air remains unchanged when the air flows through the heat exchange base tube, so that the resistance at the air side of the heat exchange base tube for the condenser can be decreased to achieve the purpose of reducing the energy consumption of a fan. When the heat exchange base tube for the direct air-cooling condenser is applied to direct air-cooling condensers of large-scale thermal power plants, the advantage of low resistance is more prominent.
Description
Technical field
The present invention relates to a kind of heat exchange parent tube of direct air cooled condenser.Be applied to exhaust steam condensation fields such as thermal power plant steam turbine, chemical industry and empty branch trade steam turbines.
Background technology
The exhaust steam that steam turbine and steam turbines are discharged need be condensed into water, delivers to boiler and recycles.For the conserve water resource, what be used for that the direct air cooled condenser of exhaust steam condensation uses at home and abroad is very general.The employed heat exchange element of direct air cooled condenser is the finned tube of the outer enhanced heat exchange of pipe, although have multiple form, and the finned tube of using at most at present that still is called single row of tubes.Single row of tubes is made up of parent tube and fin, and the shape of cross section of parent tube is the rectangle flat tube, and its two ends are circular-arc; The cross section of fin also is a rectangle, along the shape that is shaped as serpentine bend longitudinally of parent tube.The material of single row of tubes parent tube is single face covering aluminum plate or single face alclad sheet, and the fin material is an aluminum or aluminum alloy, and parent tube is connected through soldering with fin.
Single row of tubes also exists deficiency.Since the rectangular shape of parent tube and fin, the postpone of single row of tubes in condenser " " word cloth, and the size (or area) of the air flow passage between the outer fin of formed parent tube is constant; Cold air constantly is heated between the fin of parent tube both sides after getting into this passage along the length direction of parent tube cross section, and temperature raises and will cause that density reduces, volume increases, and the flow velocity of air increases simultaneously, and is the highest at the exit flow velocity that arrives finned tube; In this process,, the air velocity increase also increases along with will causing resistance.Result of the test shows, when the air temperature rise reached 30 ℃ of left and right sides, under the condition of same air mass flow, the air drag during single row of tubes hot increased about 30% during than cold conditions (not heating).
Along with thermal power plant, chemical industry and empty industry-specific unit specification constantly enlarge; The size of air cooling tubes condenser also constantly increases; The length of finned tube and quantity increase, the cooling unit of condenser and blower fan more, and the resistance of air side is just more obvious to the influence of blower fan power consumption.Now, use the direct air cooled condenser of single-row back-fin pipe, the power consumption of blower fan is very big, can not satisfy user's requirements of saving energy.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of air side resistance littler direct air cooled condenser heat exchange parent tube, to satisfy user's higher energy-conservation requirement.
The objective of the invention is to realize like this: a kind of direct air cooled condenser heat exchange parent tube; Heat exchange parent tube cross section is elongated; That the both ends of cross section are is circular-arc, the side is the plane; Said heat exchange parent tube shape of cross section is a wedge shape, its width dimensions along air-flow direction from large to small, towards the leading section width dimensions of the cross section of air stream greater than the rearward end width dimensions.
Direct air cooled condenser heat exchange parent tube of the present invention, the heat exchange parent tube covers the steel aluminium composite material of aluminium or steel plate forming that single face is aluminized by single face and forms through high-frequency welding, and its weld seam C position is in the end or in the side.
As everyone knows, can expand when air is heated, when the air of expansion flowed between parent tube, flow velocity can increase if the channel size that flows remains unchanged, thereby caused that resistance becomes big.A kind of direct air cooled condenser heat exchange of the present invention parent tube; Parent tube adopts wedge shape, air flow passage is raise along with temperature and enlarges, and has held the volume that hot-air increased after air expands; The flow velocity of air is remained unchanged when flowing through between the adjacent parent tube; Have the condenser of reduction finned tube air side drag effect, reach the purpose that reduces fan energy consumption, meet the requirement of conservation-minded society.
When a kind of direct air cooled condenser heat exchange of the present invention parent tube was used for the large-size thermal power plant direct air cooled condenser, the advantage that its resistance is little can be more remarkable.
Description of drawings
Fig. 1 is the cross-sectional view of prior art air cooling tubes condenser heat exchange parent tube
Fig. 2 is embodiment 1 cross sectional representation of embodiment of the present invention, and weld seam is in the end.
Fig. 3 is embodiment 2 cross sectional representation of embodiment of the present invention, and weld seam is in the side.
Reference numeral among the figure:
Heat exchange parent tube 1
Cold air A
Hot-air B
Weld seam C.
The specific embodiment
As shown in Figure 2, Fig. 2 is embodiment 1 cross sectional representation of embodiment of the present invention.Can find out by Fig. 2; Direct air cooled condenser heat exchange parent tube of the present invention, heat exchange parent tube 1 cross section is elongated, and the both ends of cross section are circular-arc or rounded; The side is the plane; Said heat exchange parent tube 1 shape of cross section is a wedge shape, its width dimensions along air-flow direction from large to small, towards the leading section width dimensions of the cross section of air stream greater than the rearward end width dimensions.Heat exchange parent tube 1 covers the steel aluminium composite material of aluminium or steel plate forming that single face is aluminized by single face and forms through high-frequency welding, and its weld seam C position is in the end.
In embodiment 1, the length dimension of the cross section of heat exchange parent tube is 200-300mm, leading section width dimensions 18-24mm, rearward end width dimensions 12-20mm.
Heat exchange parent tube 1 inside is mobile exhaust steam (steam), and the outside is the air of convection current, and the air outside managing interior exhaust steam and managing carries out condensing into water after the heat exchange.Cold air A gets between the heat exchange parent tube from the bottom of heat exchange parent tube, becomes hot-air B after being heated and discharges, and as can be seen from the figure, manages volume of air progressively expansion from bottom to top between outer parent tube.
Embodiment 2:
Fig. 3 is embodiment 2 cross sectional representation of embodiment of the present invention.Can find out by Fig. 3, a kind of direct air cooled condenser heat exchange of the present invention parent tube, its parent tube cross sectional shape is a wedge shape, weld seam C position is in the side; Heat exchange parent tube 1 size is close with embodiment 1.Present embodiment 2 mainly is that position while welding is different with the difference of embodiment 1.
Claims (3)
1. direct air cooled condenser heat exchange parent tube; Heat exchange parent tube (1) cross section is elongated; That the both ends of cross section are is circular-arc, the side is the plane; It is characterized in that: said heat exchange parent tube (1) shape of cross section is a wedge shape, its width dimensions along air-flow direction from large to small, towards the leading section width dimensions of the cross section of air stream greater than the rearward end width dimensions.
2. a kind of direct air cooled condenser heat exchange parent tube according to claim 1; It is characterized in that: heat exchange parent tube (1) covers the steel aluminium composite material of aluminium or steel plate forming that single face is aluminized by single face and forms through high-frequency welding, and its weld seam C position is in the end or in the side.
3. according to claim 1 or the described a kind of direct air cooled condenser heat exchange parent tube of claim 2; The length dimension that it is characterized in that the cross section of said heat exchange parent tube (1) is 200-300mm; Leading section width dimensions 18-24mm, rearward end width dimensions 12-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100594759A CN102607311A (en) | 2012-03-08 | 2012-03-08 | Heat exchange base tube for direct air-cooling condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100594759A CN102607311A (en) | 2012-03-08 | 2012-03-08 | Heat exchange base tube for direct air-cooling condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102607311A true CN102607311A (en) | 2012-07-25 |
Family
ID=46524923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100594759A Pending CN102607311A (en) | 2012-03-08 | 2012-03-08 | Heat exchange base tube for direct air-cooling condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102607311A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970253A (en) * | 2020-07-22 | 2022-01-25 | 成都聚实节能科技有限公司 | Large-section air-cooling condensing single-row pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149598Y (en) * | 1992-07-11 | 1993-12-15 | 青岛化工学院 | Drop-cross-section tubular heat exchanger |
| CN2645022Y (en) * | 2003-09-09 | 2004-09-29 | 上海得灵电器实业有限公司 | High-efficient low windage heat exchanger |
| CN101487675A (en) * | 2009-01-23 | 2009-07-22 | 江苏双良空调设备股份有限公司 | Wing-shaped heat-exchange finned tube |
| US20100263840A1 (en) * | 2009-04-20 | 2010-10-21 | Research Cottrell Dry Cooling, Inc. | Turbine exhaust condenser |
| CN101943535A (en) * | 2010-09-29 | 2011-01-12 | 浙江金宸三普换热器有限公司 | Oblate pipe and fin structure for parallel flow heat exchanger |
| CN102538538A (en) * | 2011-11-10 | 2012-07-04 | 华北电力大学 | Resistance-reducing base-tube fin tube bundle of air condenser |
| CN202485513U (en) * | 2012-03-08 | 2012-10-10 | 双良节能系统股份有限公司 | Heat exchange base tube of direct air-cooled steam condenser |
-
2012
- 2012-03-08 CN CN2012100594759A patent/CN102607311A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149598Y (en) * | 1992-07-11 | 1993-12-15 | 青岛化工学院 | Drop-cross-section tubular heat exchanger |
| CN2645022Y (en) * | 2003-09-09 | 2004-09-29 | 上海得灵电器实业有限公司 | High-efficient low windage heat exchanger |
| CN101487675A (en) * | 2009-01-23 | 2009-07-22 | 江苏双良空调设备股份有限公司 | Wing-shaped heat-exchange finned tube |
| US20100263840A1 (en) * | 2009-04-20 | 2010-10-21 | Research Cottrell Dry Cooling, Inc. | Turbine exhaust condenser |
| CN101943535A (en) * | 2010-09-29 | 2011-01-12 | 浙江金宸三普换热器有限公司 | Oblate pipe and fin structure for parallel flow heat exchanger |
| CN102538538A (en) * | 2011-11-10 | 2012-07-04 | 华北电力大学 | Resistance-reducing base-tube fin tube bundle of air condenser |
| CN202485513U (en) * | 2012-03-08 | 2012-10-10 | 双良节能系统股份有限公司 | Heat exchange base tube of direct air-cooled steam condenser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970253A (en) * | 2020-07-22 | 2022-01-25 | 成都聚实节能科技有限公司 | Large-section air-cooling condensing single-row pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4659863B2 (en) | Heat exchanger unit and air conditioner indoor unit using the same | |
| CN103940281A (en) | Novel heat exchanger and manufacturing method thereof | |
| CN202793131U (en) | Parallel flow heat exchanger and flat tube section bars thereof | |
| JP2011112331A (en) | Heat exchanger for exhaust gas | |
| CN202485522U (en) | Finned tube for direct air cooled condenser | |
| CN202485513U (en) | Heat exchange base tube of direct air-cooled steam condenser | |
| JP3854978B2 (en) | Forming disc for rolled fin tube | |
| CN102607311A (en) | Heat exchange base tube for direct air-cooling condenser | |
| CN101782300A (en) | Heat exchanger | |
| CN202485523U (en) | Direct air-cooling condenser fin | |
| CN202485526U (en) | Tube bundle for direct air cooled condenser | |
| CN214039043U (en) | Micro-channel heat exchanger and air conditioning system | |
| CN105403079A (en) | Energy-saving radiator with liner tubes and staggered type finned tubes and radiating method | |
| JP2010107130A (en) | Heat exchanger unit and indoor unit of air conditioner using the same | |
| CN102692144B (en) | A kind of new flat tube air cooler | |
| CN105202934A (en) | Air cooling radiator | |
| CN205209299U (en) | Casing heat exchanger | |
| CN211626225U (en) | Heat-transfer pipe heat radiation structure | |
| CN212620242U (en) | Radiating tube structure with wavy flying wings | |
| CN102607313A (en) | Direct air-cooling condenser finned tube | |
| CN203501559U (en) | Fin-type evaporator for refrigerator of large heat exchange area | |
| RU2294503C1 (en) | Multi-sectional heat exchanger | |
| CN102607312A (en) | Direct air-cooling condenser fin | |
| CN104006693B (en) | Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element | |
| Lewpiriyawong et al. | Thermal and hydraulic analysis of aluminium oblique-tube condenser coils with plain fins manufactured by controlled atmosphere brazing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |