CN204301114U - Cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes - Google Patents
Cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes Download PDFInfo
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- CN204301114U CN204301114U CN201420726167.1U CN201420726167U CN204301114U CN 204301114 U CN204301114 U CN 204301114U CN 201420726167 U CN201420726167 U CN 201420726167U CN 204301114 U CN204301114 U CN 204301114U
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- pipe
- membrane wall
- exhaust gases
- gases passes
- perforated plate
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The membrane wall that cold necking pipe disclosed in the utility model and seamless pipe combined type three backhaul exhaust gases passes comprise shell body and be coated on its inside forms, membrane wall comprises multiple connected cold necking pipe and multiple light pipe composition be connected, be tightly connected by round steel sealing strip between adjacent cold necking pipe, flue gas is reserved with through tube panel passage between the body of adjacent two light pipes, the two ends mouth of pipe of cold necking pipe and light pipe respectively with upper perforated plate, lower perforated plate connects, inner side membrane wall and upper perforated plate, lower perforated plate composition burner hearth, in, outside membrane wall mid portion is the second backhaul exhaust gases passes, shell body and outside membrane wall form the 3rd backhaul exhaust gases passes.Cold necking pipe of the present utility model and seamless pipe combined type three backhaul exhaust gases passes reduce membrane wall pipe intercept, increase heat exchange area, and pipe end adopts throat structure that the distance between pipe end weld seam is increased, and avoids weld heat-affected zone; Flue gas circulation position adopts smoke three-pass currency structure the degree of depth can absorb heat in flue gas.
Description
Technical field
The utility model belongs to boiler technology field, is specifically related to a kind of cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes.
Background technology
In recent years, membrane wall structure is more and more extensive in the application in boiler manfacturing field, in the layout of membrane wall, pipe intercept is less, under equal combustion space, the heating surface area that can arrange is larger, thus increases radiation of burner hearth heating surface area under the condition not reducing furnace volume heat release rate, effect optimizes boiler heat-transfer effect again, and it can also ensure that the cumulative volume of boiler does not increase while raising boiler thermal output.But while pipe intercept reduces, pipe end weld heat-affected zone will be overlapped, and flue gas cannot ensure through membrane wall circulation area.
Utility model content
The purpose of this utility model is to provide a kind of cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes, the shortcoming that the overlapped and flue gas in heat affected area solving the pipe end welding that existing membrane wall structure exists cannot ensure through circulation area during membrane wall.
The technical scheme that the utility model adopts is: cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes, comprise by apron plate, side guard plate, rear backplate, upper perforated plate, be tightly connected between lower perforated plate the shell body formed and the membrane wall being coated on shell body inside composition, apron plate is connected with outside film type wall sealing, rear backplate offers outlet flue, membrane wall comprises multiple connected cold necking pipe and multiple light pipe composition be connected, be tightly connected by round steel sealing strip between adjacent cold necking pipe, multiple light pipe is divided into two groups and is arranged at the middle part of membrane wall rear end, inner side and the both sides, front end of outside membrane wall respectively, flue gas is reserved with through tube panel passage between the body of adjacent two light pipes, the two ends mouth of pipe of cold necking pipe and light pipe respectively with described upper perforated plate, lower perforated plate connects, inner side membrane wall and upper perforated plate, the space of lower perforated plate composition burner hearth, in, outside membrane wall mid portion is the second backhaul exhaust gases passes, shell body and outside membrane wall form the 3rd backhaul exhaust gases passes.
Feature of the present utility model is also,
The cold diameter of necking pipe two ends reducing and the equal diameters of light pipe.
Cold necking pipe and light pipe are seamless steel pipe.
Cold necking pipe of the present utility model and seamless pipe combined type three backhaul exhaust gases passes solve the shortcoming that the overlapped and flue gas in heat affected area that pipe end that existing membrane wall structure exists welds cannot ensure through circulation area during membrane wall.Cold necking pipe of the present utility model and seamless pipe combined type three backhaul exhaust gases passes have the following advantages:
1, reduce the pipe intercept of membrane wall to greatest extent, increase heat exchange area, pipe end adopts throat structure, the distance between pipe end weld seam and weld seam is increased, avoids weld heat-affected zone;
2, flue gas circulation position adopts common light pipe, leaves enough flue gas circulation passages;
3, adopt smoke three-pass currency structure, the degree of depth absorb in flue gas heat, reach the effect of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of cold necking pipe of the present utility model and seamless pipe combined type three backhaul exhaust gases passes;
Fig. 2 is the left view of Fig. 1.
In figure, 1. apron plate, 2. light pipe, 3. the second backhaul exhaust gases passes, 4. cold necking pipe, 5. burner hearth, 6. round steel sealing strip, 7. the 3rd backhaul exhaust gases passes, 8. side guard plate, backplate, 10. bolt 9., 11. flue gases pass tube panel passage, 12. upper perforated plates, 13. lower perforated plates.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
The structure of the cold necking pipe that the utility model provides and seamless pipe combined type three backhaul exhaust gases passes as depicted in figs. 1 and 2, comprise by apron plate 1, side guard plate 8, rear backplate 9, upper perforated plate 12, be tightly connected between lower perforated plate 13 shell body formed and the membrane wall being coated on shell body inside composition, apron plate 1 is connected with outside film type wall sealing, rear backplate 9 offers outlet flue 10, membrane wall comprises multiple connected cold necking pipe 4 and forms with multiple light pipe 2 be connected, be tightly connected by round steel sealing strip 6 between adjacent cold necking pipe 4, multiple light pipe 2 is divided into two groups and is arranged at the middle part of membrane wall rear end, inner side and the both sides, front end of outside membrane wall respectively, flue gas is reserved with through tube panel passage 11 between the body of adjacent two light pipes 2, the two ends mouth of pipe of cold necking pipe 4 and light pipe 2 respectively with upper perforated plate 12, lower perforated plate 13 connects, inner side membrane wall and upper perforated plate 12, lower perforated plate 13 forms the space of burner hearth 5, in, outside membrane wall mid portion is the second backhaul exhaust gases passes 3, shell body and outside membrane wall form the 3rd backhaul exhaust gases passes 7.
The cold diameter of necking pipe 4 two ends reducing and the equal diameters of light pipe 2.
Cold necking pipe 4 and light pipe 2 are seamless steel pipe.
The cold necking pipe 4 of the present embodiment adopts
seamless steel pipe, its pipe end shrink mouth is extremely
light pipe 2 adopts
seamless pipe, pipe intercept all gets 70mm, and adjacent cold necking pipe 4 tube wall gap 70mm-63.5mm=6.5mm, as fit-up gap, has assembled rear use
round steel sealing strip 6 seal, pipe end outer wall gap is 70mm-51mm=19mm, can ensure that the weld heat-affected zone that pipe and upper perforated plate 12, lower perforated plate 13 weld is not overlapping; Cold necking pipe 4 and light pipe 2 specification can adjust according to needs, and pipe intercept is corresponding adjustment also; In the middle part of the rear end of inner side membrane wall and the leading section of outside membrane wall arrange some
light pipe 2, between it, gap is as flue gas through tube panel passage 11, ensures that flue gas is in longitudinal even branch, fully can wash away inside and outside side membrane wall, without dead angle, thus solves the little problem causing the overlapping and exhaust gases passes layout in heat affected area of pipe intercept simultaneously.
Cold necking pipe of the present utility model and seamless pipe combined type three backhaul flue gas channels operation principle are, fuel burns in burner hearth 5, radiation heat transfer is carried out with medium in the membrane wall of inner side, in Fig. 1, arrow points is flow of flue gas direction, the high-temperature flue gas produced enters the second backhaul exhaust gases passes 3 through flue gas tube panel passage 11 outflow of light pipe 2 part in the middle part of membrane wall rear end, inner side, in the second backhaul exhaust gases passes 3, transversal flow both sides membrane wall carries out heat convection, low-temperature flue gas is become after release heat, membrane wall front end, outside is flow to along the second backhaul exhaust gases passes 3, low-temperature flue gas passes tube panel passage 11 through the flue gas of membrane wall front end, outside light pipe 2 part again, enter the 3rd backhaul exhaust gases passes 7, cigarette temperature is reduced with the further heat exchange of outside membrane wall, flow to outlet flue 10 along the 3rd backhaul exhaust gases passes 7 again to discharge.
By the way, cold necking pipe of the present utility model and seamless pipe combined type three backhaul exhaust gases passes solve the shortcoming that the overlapped and flue gas in heat affected area that pipe end that existing membrane wall structure exists welds cannot ensure through circulation area during membrane wall.Cold necking pipe of the present utility model and seamless pipe combined type three backhaul exhaust gases passes have the following advantages:
1, reduce the pipe intercept of membrane wall to greatest extent, increase heat exchange area, pipe end adopts throat structure, the distance between pipe end weld seam and weld seam is increased, avoids weld heat-affected zone;
2, flue gas circulation position adopts common light pipe, leaves enough flue gas circulation passages;
3, adopt smoke three-pass currency structure, the degree of depth absorb in flue gas heat, reach the effect of energy-conserving and environment-protective.
Claims (3)
1. cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes, comprise by apron plate (1), side guard plate (8), rear backplate (9), upper perforated plate (12), be tightly connected between lower perforated plate (13) shell body formed and the membrane wall being coated on shell body inside composition, described apron plate (1) is connected with outside film type wall sealing, described rear backplate (9) offers outlet flue (10), it is characterized in that, described membrane wall comprises multiple connected cold necking pipe (4) and multiple light pipe (2) composition be connected, be tightly connected by round steel sealing strip (6) between adjacent cold necking pipe (4), described multiple light pipe (2) is divided into two groups and is arranged at the middle part of membrane wall rear end, inner side and the both sides, front end of outside membrane wall respectively, flue gas is reserved with through tube panel passage (11) between the body of adjacent two light pipes (2), the two ends mouth of pipe of described cold necking pipe (4) and described light pipe (2) respectively with described upper perforated plate (12), described lower perforated plate (13) connects, inner side membrane wall and upper perforated plate (12), the space of lower perforated plate (13) composition burner hearth (5), in, outside membrane wall mid portion is the second backhaul exhaust gases passes (3), described shell body and outside membrane wall form the 3rd backhaul exhaust gases passes (7).
2. cold necking pipe as claimed in claim 1 and seamless pipe combined type three backhaul exhaust gases passes, is characterized in that, the diameter of described cold necking pipe (4) two ends reducing and the equal diameters of described light pipe (2).
3. cold necking pipe as claimed in claim 2 and seamless pipe combined type three backhaul exhaust gases passes, is characterized in that, described cold necking pipe (4) and described light pipe (2) are seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726167.1U CN204301114U (en) | 2014-11-27 | 2014-11-27 | Cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726167.1U CN204301114U (en) | 2014-11-27 | 2014-11-27 | Cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204301114U true CN204301114U (en) | 2015-04-29 |
Family
ID=53106647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420726167.1U Expired - Fee Related CN204301114U (en) | 2014-11-27 | 2014-11-27 | Cold necking pipe and seamless pipe combined type three backhaul exhaust gases passes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204301114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356630A (en) * | 2017-07-24 | 2017-11-17 | 南京工业大学 | A kind of method of testing of polymer hot-fluid depth absorption coefficient development law |
-
2014
- 2014-11-27 CN CN201420726167.1U patent/CN204301114U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356630A (en) * | 2017-07-24 | 2017-11-17 | 南京工业大学 | A kind of method of testing of polymer hot-fluid depth absorption coefficient development law |
| CN107356630B (en) * | 2017-07-24 | 2019-05-17 | 南京工业大学 | A kind of test method of polymer hot-fluid depth absorption coefficient development law |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20161127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |