CN2182328Y - Corrugated plate heat-transfer structure for convective chimney neck of boiler - Google Patents
Corrugated plate heat-transfer structure for convective chimney neck of boiler Download PDFInfo
- Publication number
- CN2182328Y CN2182328Y CN 93235807 CN93235807U CN2182328Y CN 2182328 Y CN2182328 Y CN 2182328Y CN 93235807 CN93235807 CN 93235807 CN 93235807 U CN93235807 U CN 93235807U CN 2182328 Y CN2182328 Y CN 2182328Y
- Authority
- CN
- China
- Prior art keywords
- boiler
- flue
- transfer structure
- convection
- corrugated plate
- 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 - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a corrugated plate heat-transfer structure for the convective chimney neck of a boiler. The wall of a past plane-shaped convective chimney neck is changed into the wall of the chimney neck with a corrugated plate. A water-cooled wall is arranged on the outer side of the wall of the chimney neck. The adoption of the structure can improve the heat-transfer efficiency of the boiler.
Description
The invention belongs to the boiler technology field, specifically belong to boiler convection pass corrugated plating heat transfer structure.
In existing boiler convection pass structure, walling of flue generally all adopts planar design.When convection tube in the convection pass adopts the stagger arrangement positional alignment, each area of section difference of flue, flue gas is the flow velocity difference in flue, has influenced the thermal efficiency.
The objective of the invention is to address the above problem, improve the heat transfer efficiency of convection pass.
Technical solution of the present invention is achieved in that the convection pass wall is designed to garden arc-shaped wave card that the jut of its ripple is located at the few position of convection tube arrangement in the flue.In the outside of corrugated plating walling of flue is water-cooling wall.Its effect is when flue gas flows through this corrugated plating cross section of living in, because this section flue gas flow rate has been accelerated in the existence of projection ripple, to have improved owing to each area of section difference, and caused the situation that flow velocity is different.Because the quickening of cigarette speed increases corrugated plating and convection tube heat intensity, can the thermal efficiency thereby can improve.
The invention has the advantages that, adopt this corrugated board structures after, the corrugated regions area of section is not for establishing half of corrugated board structures, velocity of flue gas doubles, heat transfer coefficient is by 42kcal/m
2H ℃ is increased to 62kcal/m
2H ℃; The flue surface overall heat-transfer coefficient on average improves 10%; In same thermic load, use under the situation with class A fuel A, boiler thermal output can improve 5～9%; Heating surface lacks than old-fashioned stove uses 2.28 square metres, can save 12 of φ 51mmx3mmx1.2m steel pipes, accounts for 20% of the used steel of convection pass, above data all with 300,000 kilocalories/time boiler be example.
Figure one is a profile of the present invention
With the board-like boiler of box is example, and [1] is corrugated plating among the figure, and [2] are water-cooling wall, and [3] are convection tube.The corrugated board structures form is, pitch size is identical with convection tube diameter in the flue, and the ripple radius is with the convection tube radius.Convection pass is similarly box, and corrugated plating is that two of front and back are board-like.
Claims (3)
1, a kind of boiler convection pass corrugated plating heat transfer structure is made up of convection tube, walling of flue, it is characterized in that walling of flue is a corrugated board structures, and corrugation lobes partly is located at the few position of convection tube staggered arrangement in the flue, and the walling of flue outside is a water-cooling wall.
2, boiler convection pass corrugated plating heat transfer structure as claimed in claim 1 is characterized by, and the ripple pitch size can be identical with convection tube diameter in the flue, and the ripple radius can be identical with the convection tube radius.
3, boiler convection pass corrugated plating heat transfer structure as claimed in claim 1 is characterized by, and convection pass can be box, and corrugated plating can be board-like for two of front and back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93235807 CN2182328Y (en) | 1993-12-30 | 1993-12-30 | Corrugated plate heat-transfer structure for convective chimney neck of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93235807 CN2182328Y (en) | 1993-12-30 | 1993-12-30 | Corrugated plate heat-transfer structure for convective chimney neck of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2182328Y true CN2182328Y (en) | 1994-11-09 |
Family
ID=33811149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93235807 Expired - Fee Related CN2182328Y (en) | 1993-12-30 | 1993-12-30 | Corrugated plate heat-transfer structure for convective chimney neck of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2182328Y (en) |
-
1993
- 1993-12-30 CN CN 93235807 patent/CN2182328Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |