CN105547031A - Spiral and circular finned tube with longitudinal grooves - Google Patents
Spiral and circular finned tube with longitudinal grooves Download PDFInfo
- Publication number
- CN105547031A CN105547031A CN201610069383.7A CN201610069383A CN105547031A CN 105547031 A CN105547031 A CN 105547031A CN 201610069383 A CN201610069383 A CN 201610069383A CN 105547031 A CN105547031 A CN 105547031A
- Authority
- CN
- China
- Prior art keywords
- fin
- spirality
- base tube
- round
- circular 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
Abstract
A spiral and circular finned tube with longitudinal grooves comprises a circular base tube and spiral or circular fins which are arranged outside the circular base tube at intervals of preset fin distances; the grooves of which openings in upper ends extend to the circular base tube are formed in windward sides and leeward sides of the spiral or circular fins; and the widths of the grooves are smaller than the outer diameter of the circular base tube. The special grooves are adopted to generate axial speed at an arrest point of the windward side of the base tube, and accumulated ash among the fins of the windward side can be reduced; and symmetric eddy with erosion effect is generated at the leeward side of the base tube, the windward side and the leeward side have good automatic ash cleaning effect, and accumulated ash is prevented effectively. Compared with the traditional spiral finned tube, the spiral and circular finned tube with the longitudinal grooves has the advantages that abrasion caused by gathering of ash particles due to a helical angle in an erosion process is eliminated effectively by the longitudinal grooves, heat transfer efficiency is improved remarkably, and double effects of preventing accumulated ash and preventing abrasion are obvious.
Description
Technical field
The present invention relates to a kind of heat exchanger pipe of boiler, be specifically related to a kind of spirality and the Round fin pipe with longitudinal groove.
Background technology
At present, spirality and Round fin pipe comparatively often adopt the expansion heat-transfer surface in boiler back end ductwork.Actual motion finds, during fly ash granule flow-disturbing Round fin pipe, absorption of being rebuffed in windward side, obvious recirculating zone appears in lee face, and dust stratification in various degree all appears in the rib Ji Chu of Round fin pipe windward side and lee face.
Due to the water conservancy diversion of helical fin, there is speed difference in fin both sides, the windward side flow velocity of its windward side fin is larger, wearing and tearing are carried out along fin side surface direction, because of helical angle formed ash particle scour process in gather caused serious wear, and fin leeward side flow velocity is less, be rebuffed absorption and fin of ash particle hinders the axis of flue gas to wash away, and causes the leeward side dust stratification of windward side fin serious; Simultaneously because lee face fin both sides speed is minimum, flue gas along fin following current and rib Ji Chu formed speed close to zero area of space, therefore lee face rib Ji Chu easily forms cohesiveness dust stratification.Though helical fin can produce certain axial velocity, because the axis of fin hinders, flue gas effectively cannot wash away dust stratification, causes dust stratification constantly to be accumulated, and causes the heat transfer property of heat exchanger to worsen, even blocking pipe.In order to prevent dust stratification, special soot blower usually can be adopted to carry out regular deashing, which increase boiler operatiopn cost.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of spirality and the Round fin pipe with longitudinal groove, solve the dust stratification of existing spirality and Round fin pipe and the wear problem of spiral fin pipe, significantly improve heat transfer efficiency, make spiral fin pipe have the double effects of obvious accumulatingdust and wearing and tearing.
For realizing above object, the technical solution used in the present invention is:
A kind of spirality and Round fin pipe with longitudinal groove, comprise circular base tube 1 and be arranged on spirality or the Round fin 2 of the default spacing of fin outside circular base tube 1, the windward side of described spirality or Round fin 2 and lee face place are provided with the groove of upper end open to circular base tube 1.
The width of described groove is less than the external diameter of circular base tube 1.
The edge of described groove width is parallel with flow of flue gas direction.
Described channel layout is at the center position of circular base tube 1 windward side and lee face.
Described spirality or Round fin 2 are axially welded on its outer wall with predetermined spacing of fin along circular base tube 1.
When described spirality or Round fin 2 are spirality, the spiral fin pipe welded at continuous high frequency adopt tool sharpening to crack, obtain the spiral fin pipe with longitudinal groove by predetermined spacing of fin.
When described spirality or Round fin 2 are circular, the semicircle fin with slotting in middle adopting upset butt welding paired by predetermined spacing of fin respectively in the both sides of circular base tube 1 is the plain fin without helical angle, obtains the Round fin pipe with longitudinal groove.
Compared to the prior art comparatively, the present invention possesses following advantage:
The present invention has spirality or the Round fin pipe of longitudinal groove, adopts special groove, produces axial velocity, be conducive to alleviating the dust stratification between the fin of windward side at stagnation point place, base tube windward side; Produce the symmetrical vortices with souring at base tube lee face place, windward side and lee face all produce preferably from ash-removal effect, effectively prevent dust stratification.Compared with traditional spiral fin coil, longitudinal groove effectively eliminate because of helical angle formed ash particle scour process in gather caused wearing and tearing, significantly improve heat transfer efficiency, there is the double effects of obvious accumulatingdust and wearing and tearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is left view of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly simple and clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, Figure 2 and Figure 3, a kind of spirality and Round fin pipe with longitudinal groove of the present invention, comprise circular base tube 1 and be arranged on spirality or the Round fin 2 of the default spacing of fin outside circular base tube 1, the windward side of described spirality or Round fin 2 and lee face place are provided with the groove of upper end open to circular base tube 1.The present embodiment is spiral fin.
As the preferred embodiment of the present invention, the width of described groove is less than the external diameter of circular base tube 1.
As the preferred embodiment of the present invention, the edge of described groove width is parallel with flow of flue gas direction.
As the preferred embodiment of the present invention, described channel layout is at the center position of circular base tube 1 windward side and lee face.
As the preferred embodiment of the present invention, described spirality or Round fin 2 are axially welded on its outer wall with predetermined spacing of fin along circular base tube 1.
As the preferred embodiment of the present invention, when described spirality or Round fin 2 are spirality, the spiral fin pipe welded at continuous high frequency adopt tool sharpening to crack, obtain the spiral fin pipe with longitudinal groove by predetermined spacing of fin.
As the preferred embodiment of the present invention, when described spirality or Round fin 2 are circular, the semicircle fin with slotting in middle adopting upset butt welding paired by predetermined spacing of fin respectively in the both sides of circular base tube 1 is the plain fin without helical angle, obtains the Round fin pipe with longitudinal groove.
Claims (7)
1. one kind has spirality and the Round fin pipe of longitudinal groove, comprise circular base tube (1) and be arranged on spirality or the Round fin (2) of circular base tube (1) default spacing of fin outward, it is characterized in that: the windward side of described spirality or Round fin (2) and lee face place are provided with the groove of upper end open to circular base tube (1).
2. a kind of spirality and Round fin pipe with longitudinal groove according to claim 1, is characterized in that: the width of described groove is less than the external diameter of circular base tube (1).
3. a kind of spirality and Round fin pipe with longitudinal groove according to claim 1, is characterized in that: the edge of described groove width is parallel with flow of flue gas direction.
4. a kind of spirality and Round fin pipe with longitudinal groove according to claim 1, is characterized in that: described channel layout is at the center position of circular base tube (1) windward side and lee face.
5. a kind of spirality and Round fin pipe with longitudinal groove according to claim 1, is characterized in that: described spirality or Round fin (2) are axially welded on its outer wall with predetermined spacing of fin along circular base tube (1).
6. a kind of spirality and Round fin pipe with longitudinal groove according to claim 1, it is characterized in that: when described spirality or Round fin (2) are for spirality, the spiral fin pipe welded at continuous high frequency by predetermined spacing of fin adopts tool sharpening to crack, obtains the spiral fin pipe with longitudinal groove.
7. a kind of spirality and Round fin pipe with longitudinal groove according to claim 1, it is characterized in that: when described spirality or Round fin (2) are for time circular, the semicircle fin with slotting in middle adopting upset butt welding paired by predetermined spacing of fin respectively in the both sides of circular base tube (1) is the plain fin without helical angle, obtains the Round fin pipe with longitudinal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610069383.7A CN105547031A (en) | 2016-02-01 | 2016-02-01 | Spiral and circular finned tube with longitudinal grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610069383.7A CN105547031A (en) | 2016-02-01 | 2016-02-01 | Spiral and circular finned tube with longitudinal grooves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105547031A true CN105547031A (en) | 2016-05-04 |
Family
ID=55826400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610069383.7A Pending CN105547031A (en) | 2016-02-01 | 2016-02-01 | Spiral and circular finned tube with longitudinal grooves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105547031A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028705A (en) * | 2018-07-13 | 2018-12-18 | 上海理工大学 | A kind of air-cooled frost-free refrigerator using function recycling vascular refrigerator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603932A (en) * | 1983-06-20 | 1985-01-10 | Sanyo Electric Co Ltd | Production of heat exchanger |
| CN202254880U (en) * | 2011-09-07 | 2012-05-30 | 思安新能源股份有限公司 | Exhaust-heat boiler for tail of cement kiln |
| CN202329341U (en) * | 2011-11-10 | 2012-07-11 | 山东大学 | Elliptical H-shaped finned tube |
| CN103557513A (en) * | 2013-11-05 | 2014-02-05 | 国家电网公司 | H-shaped finned tube coal economizer based on longitudinal vortexes |
| CN204963640U (en) * | 2015-08-11 | 2016-01-13 | 江苏龙净环境科技有限公司 | Extended surface tube and heat exchanger resistance to wear |
| CN205482508U (en) * | 2016-02-01 | 2016-08-17 | 西安交通大学 | Spiral and circular finned tube with vertical slot |
-
2016
- 2016-02-01 CN CN201610069383.7A patent/CN105547031A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603932A (en) * | 1983-06-20 | 1985-01-10 | Sanyo Electric Co Ltd | Production of heat exchanger |
| CN202254880U (en) * | 2011-09-07 | 2012-05-30 | 思安新能源股份有限公司 | Exhaust-heat boiler for tail of cement kiln |
| CN202329341U (en) * | 2011-11-10 | 2012-07-11 | 山东大学 | Elliptical H-shaped finned tube |
| CN103557513A (en) * | 2013-11-05 | 2014-02-05 | 国家电网公司 | H-shaped finned tube coal economizer based on longitudinal vortexes |
| CN204963640U (en) * | 2015-08-11 | 2016-01-13 | 江苏龙净环境科技有限公司 | Extended surface tube and heat exchanger resistance to wear |
| CN205482508U (en) * | 2016-02-01 | 2016-08-17 | 西安交通大学 | Spiral and circular finned tube with vertical slot |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028705A (en) * | 2018-07-13 | 2018-12-18 | 上海理工大学 | A kind of air-cooled frost-free refrigerator using function recycling vascular refrigerator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |