CN2309524Y - Oil-and gas-fired multi-tube jet hot-water boiler - Google Patents
Oil-and gas-fired multi-tube jet hot-water boiler Download PDFInfo
- Publication number
- CN2309524Y CN2309524Y CN 97224773 CN97224773U CN2309524Y CN 2309524 Y CN2309524 Y CN 2309524Y CN 97224773 CN97224773 CN 97224773 CN 97224773 U CN97224773 U CN 97224773U CN 2309524 Y CN2309524 Y CN 2309524Y
- Authority
- CN
- China
- Prior art keywords
- smoke
- boiler
- multitube
- pipe
- backwater
- 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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Abstract
The utility model relates to an oil-and gas-fired multi-tube jet hot-water boiler, comprising a boiler shell 1, a furnace 2, a smoke returning chamber 3, a second backward smoke tube 4, the front tube plate 5 of the smoke returning chamber, and the back tube plate 6 of the smoke returning chamber. The utility model is characterized in that the boiler also comprises a backwater jetting device which is arranged at the upper part between the front tube plate of the smoke returning chamber and the second backward smoke tube. The utility model has the advantages that the backwater flow velocity can reach 5m/s, the flow of low-temperature waternear the tube plates in a high-temperature zone can be enhanced, and the temperature of the front tube plate of the smoke returning chamber can be reduced, so that the crack of the front tube plate of the smoke returning chamber due to overheat can be prevented, and the service life of the boiler can be guaranteed; the heat efficiency of the boiler can also be improved.
Description
The utility model belongs to the corollary apparatus of fuel-firing gas-firing hot-water boiler.
Existing gas fuel hot-water boiler is generally dried back of the body formula and two kinds of structures of wetting back-type, shortcoming that dried back of the body formula structure exists the back smoke box easily to smolder, and also this structure belongs to and is eliminated gradually.The wetting back-type structure exists back the smoke-box front tube sheet often overheated, is prone to crackle, influences the service life of boiler.
The purpose of this utility model is to develop a kind of matching used backwater injection apparatus of gas fuel hot-water boiler that is, adopt time smoke-box front tube sheet of this device back wet-back boiler just can superheating phenomenon not take place, also just crackle can not take place herein, the life-span of boiler can reach design objective.
The utility model includes shell, flue, time smoke-box, the second backhaul smoke pipe, returns the smoke-box front tube sheet, returns the smoke-box back tube sheet, it is characterized in that it also includes the backwater injection apparatus, the backwater injection apparatus is installed in the top of going back in the shell between the smoke-box front tube sheet and the second backhaul smoke pipe.The backwater injection apparatus is made up of return pipe, sparge pipe, multitube shower nozzle, water fender.Sparge pipe is connected with return pipe is vertical, and the multitube shower nozzle is evenly distributed on the front end of sparge pipe, and water fender is arranged on the both sides and the rear portion of return pipe, sparge pipe, multitube shower nozzle.
To sparge pipe, the multitube shower nozzle that diminishes of via hole diameter penetrates boiler blow-down water of the present utility model again, can reach the flow velocity of 5m/s through return pipe.Strengthened near flowing of the water at low temperature tube sheet of high-temperature region, reduced the temperature of time smoke-box front tube sheet, eliminated the steam film that time the smoke-box front tube sheet produces above, prevented that time smoke-box front tube sheet is overheated and crackle takes place, guaranteed that do not reduce the service life of boiler.Moreover, form effectively circulation because the injection of backwater makes in the boiler static water have flows, and making that water is heated to speed up, the thermal efficiency improves.
Fig. 1 is the utility model overall structure schematic diagram, and Fig. 2 is the structural representation of backwater injection apparatus.
Embodiment: present embodiment is made up of shell 1, flue 2, time smoke-box 3, the second backhaul smoke pipe 4, time smoke-box front tube sheet 5, time smoke-box back tube sheet 6, backwater injection apparatus.The backwater injection apparatus is installed in the top of going back in the shell 1 between the smoke-box front tube sheet 6 and the second backhaul smoke pipe 4.The backwater injection apparatus is made up of return pipe 7, sparge pipe 8, multitube shower nozzle 9, water fender 10.Sparge pipe 8 and 7 vertical connections of return pipe, multitube shower nozzle 9 is evenly distributed on the front end of sparge pipe 8, and communicates with it, and water fender 10 is arranged on the both sides and the rear portion of return pipe 7, sparge pipe 8, multitube shower nozzle 9.The diameter of multitube shower nozzle 9 each spout and the diameter ratio of return pipe 7 are 0.05-0.3.
Claims (3)
1, the fuel-firing gas-firing multitube sprays hot-water boiler, it includes shell (1), flue (2), time smoke-box (3), the second backhaul smoke pipe (4), returns smoke-box front tube sheet (5), returns smoke-box back tube sheet (6), it is characterized in that it also includes the backwater injection apparatus, the backwater injection apparatus is installed in the top of going back in the shell (1) between the smoke-box front tube sheet (6) and the second backhaul smoke pipe (4).
2, fuel-firing gas-firing multitube according to claim 1 sprays hot-water boiler, it is characterized in that the backwater injection apparatus is made up of return pipe (7), sparge pipe (8), multitube shower nozzle (9), water fender (10), sparge pipe (8) and vertical connection of return pipe (7), multitube shower nozzle (9) is evenly distributed on the front end of sparge pipe (8), and communicate with it, water fender (10) is arranged on the both sides and the rear portion of return pipe (7), sparge pipe (8), multitube shower nozzle (9).
3, fuel-firing gas-firing multitube according to claim 1 sprays hot-water boiler, it is characterized in that the diameter of each spout of multitube shower nozzle (9) and the diameter ratio of return pipe (7) are 0.05-0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224773 CN2309524Y (en) | 1997-08-29 | 1997-08-29 | Oil-and gas-fired multi-tube jet hot-water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224773 CN2309524Y (en) | 1997-08-29 | 1997-08-29 | Oil-and gas-fired multi-tube jet hot-water boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2309524Y true CN2309524Y (en) | 1999-03-03 |
Family
ID=33939005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224773 Expired - Fee Related CN2309524Y (en) | 1997-08-29 | 1997-08-29 | Oil-and gas-fired multi-tube jet hot-water boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2309524Y (en) |
-
1997
- 1997-08-29 CN CN 97224773 patent/CN2309524Y/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 |