CN217482740U - Single-drum longitudinal water-fire tube shell type boiler - Google Patents
Single-drum longitudinal water-fire tube shell type boiler Download PDFInfo
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- CN217482740U CN217482740U CN202221459880.5U CN202221459880U CN217482740U CN 217482740 U CN217482740 U CN 217482740U CN 202221459880 U CN202221459880 U CN 202221459880U CN 217482740 U CN217482740 U CN 217482740U
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Abstract
The utility model discloses a single drum indulges formula water and fire tube pot type boiler, including combustion chamber, furnace and the vertical drum that sets up, be provided with the feeder hopper at the combustion chamber top, the internally mounted of combustion chamber has the traveling grate, and the one end of combustion chamber is provided with the air intake, the built-in screw thread tobacco pipe of drum is provided with the fore-arch and encircles with the back and be used for supporting the boiler in furnace, still is provided with water-cooling wall and water-cooling screen in furnace, the tube bank lower extreme of water-cooling screen passes water-cooling wall and furnace outer wall connection header tank, the tube bank outside of water-cooling screen is provided with the sleeve pipe, and the sleeve pipe tip is provided with the flange, welds between flange and the water-cooling wall. The welding seal between the sleeve and the fins can be increased by arranging the flange, no gap can be generated after expansion with heat and contraction with cold, the sleeve has certain length, and space is provided for axial movement of the tube bundle due to expansion with heat.
Description
Technical Field
The utility model relates to the technical field of boilers, concretely relates to single drum is indulged and is put formula water and fire tube pot type boiler.
Background
The single-drum longitudinal boiler has the advantages that the overall dimension is generally small, the investment cost of a boiler room is low, the high-efficiency threaded smoke pipe is adopted, a hot water boiler with the water outlet temperature of less than or equal to 130 ℃ and a steam boiler with small capacity can cancel the tail heating surface, the height of the boiler is obviously lower in the same-capacity boiler type, the overall dimension of the boiler is minimum, and the investment of the boiler room is reduced.
In order to increase the heat exchange efficiency, a water cooling screen is arranged in the hearth of the existing single-pot boiler. The water-cooling screen tube bundle often needs to extend out of the furnace, in the prior art, the water-cooling screen tube bundle and the fins of the water-cooling wall tube bundle are generally in a direct welding mode, and due to the fact that the tube bundle expands after being heated, gaps are easy to appear at welding points after cooling, and smoke in the furnace can be prone to leaking.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that the technical problem in gap appears after current single drum boiler water wall fin and water-cooling screen tube bank direct welding expend with heat and contract with cold.
In order to solve the technical problem, the utility model discloses a technical scheme be: a single-drum longitudinal water-fire tube shell type boiler comprises a combustion chamber, a hearth and a drum arranged longitudinally, wherein a feed hopper is arranged at the top of the combustion chamber, a chain grate is arranged inside the combustion chamber, a driving chain wheel is arranged at one end of the chain grate, a driven chain wheel is arranged at the other end of the chain grate, a plurality of ash falling grooves are formed in the chain grate, an air inlet is formed in one end of the combustion chamber, a threaded smoke tube is arranged in the drum, a front arch and a rear arch are arranged in the hearth and used for supporting the boiler, a water cooling wall and a water cooling screen are further arranged in the hearth, the lower end of the tube bundle of the water cooling screen penetrates through the water cooling wall and the outer wall of the hearth to be connected with a water collecting tank, a sleeve is arranged on the outer side of the tube bundle of the water cooling screen, the length of the sleeve is 5-10 cm, a flange is arranged at the end part of the sleeve, and the flange is welded with the water cooling wall.
Furthermore, the water-cooled wall comprises a plurality of steel pipes, fins are arranged on two sides of each steel pipe, adjacent steel pipes are welded through the fins, flanges of the sleeves are welded on the fins, and the axial leads of the sleeves are perpendicular to the fins.
Furthermore, still be provided with the abrasionproof sleeve pipe on the tube bank of water-cooling screen, the abrasionproof sleeve pipe includes inner tube and outer tube, and the notch is all seted up along the axial to inner tube and outer tube, and the notch of inner tube and outer tube staggers mutually.
According to the above technical scheme, the utility model has the advantages of it is following: the welding seal between the sleeve and the fins can be increased by arranging the flange, no gap can be generated after expansion with heat and contraction with cold, the sleeve has certain length, and space is provided for axial movement of the tube bundle due to expansion with heat.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the reclaimed water cooling screen of the present invention;
fig. 3 is a schematic structural view of the middle wear-proof sleeve of the present invention.
Detailed Description
The following description will specifically explain embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the utility model discloses a single-drum longitudinal type water-fire tube shell type boiler includes combustion chamber, furnace and the vertical drum 2 that sets up, is provided with feeder hopper 8 at the combustion chamber top, and the internally mounted of combustion chamber has the traveling grate, and the one end of traveling grate is provided with drive sprocket 6, and the other end of traveling grate is provided with driven sprocket, is provided with a plurality of ash falling groove 7 in the traveling grate, and the one end of combustion chamber is provided with air intake 5, the built-in screw thread tobacco pipe 1 of drum, screw thread tobacco pipe geometric dimensions and gas velocity selection are reasonable, and the screw thread tobacco pipe does not accumulate the ash, does not abrade when the boiler normal operating, therefore boiler output and thermal efficiency do not descend along with the extension of operating time to some extent. A front arch and a rear arch 4 are provided in the furnace for supporting the boiler.
Still be provided with water-cooling wall and water-cooling screen 3 in furnace, the tube bank 10 lower extreme of water-cooling screen passes water-cooling wall and furnace outer wall and connects the header tank, the tube bank outside of water-cooling screen is provided with sleeve pipe 11, and sleeve pipe length is 5 ~ 10cm, and sleeve pipe 11 tip is provided with flange 12, welds between flange 12 and the water-cooling wall. The welding seal between the sleeve and the fins can be increased by arranging the flange, no gap appears after expansion with heat and contraction with cold, and the sleeve has certain length, so that space is provided for axial movement of the tube bundle caused by expansion with heat.
The water cooling wall comprises a plurality of steel pipes 9, fins 91 are arranged on two sides of each steel pipe 9, adjacent steel pipes 9 are welded through the fins, flanges of the sleeve pipes 11 are welded on the fins, and the axial lead of each sleeve pipe 11 is perpendicular to the fins. An anti-abrasion sleeve 13 is further arranged on the tube bundle of the water-cooling screen, as shown in fig. 3, the anti-abrasion sleeve comprises an inner tube 14 and an outer tube 15, notches 16 are formed in the inner tube and the outer tube in the axial direction, and the notches of the inner tube and the notches of the outer tube are staggered mutually. The anti-abrasion sleeve can not only play a role in protecting the tube bundle of the water-cooling screen, but also be provided with a notch to be thermally expanded to cause crack damage.
Claims (3)
1. The utility model provides a single drum is indulged and is put formula water and fire tube shell type boiler, includes combustion chamber, furnace and the drum of vertical setting, is provided with the feeder hopper at the combustion chamber top, and the internally mounted of combustion chamber has the traveling grate, and the one end of traveling grate is provided with drive sprocket, and the other end of traveling grate is provided with driven sprocket, is provided with a plurality of ash chute that falls in the traveling grate, and the one end of combustion chamber is provided with the air intake, the built-in screw thread tobacco pipe of drum is provided with preceding arch and back arch in furnace and is used for supporting the boiler, still is provided with water-cooling wall and water-cooling screen in furnace, the tube bank lower extreme of water-cooling screen passes water-cooling wall and furnace outer wall connection header tank, its characterized in that: the outer side of the tube bundle of the water-cooling screen is provided with a sleeve, the length of the sleeve is 5-10 cm, a flange is arranged at the end part of the sleeve, and the flange and the water-cooling wall are welded.
2. The single-drum longitudinal water-fire tube shell type boiler of claim 1, wherein: the water cooling wall comprises a plurality of steel pipes, fins are arranged on two sides of each steel pipe, adjacent steel pipes are welded through the fins, flanges of the sleeve are welded on the fins, and the axis line of the sleeve is perpendicular to the fins.
3. The single-drum longitudinal water-fire tube shell type boiler of claim 2, wherein: still be provided with the abrasionproof sleeve pipe on the tube bank of water-cooling screen, the abrasionproof sleeve pipe includes inner tube and outer tube, and the notch is all seted up along the axial to inner tube and outer tube, and the notch of inner tube and outer tube staggers mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221459880.5U CN217482740U (en) | 2022-06-10 | 2022-06-10 | Single-drum longitudinal water-fire tube shell type boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221459880.5U CN217482740U (en) | 2022-06-10 | 2022-06-10 | Single-drum longitudinal water-fire tube shell type boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217482740U true CN217482740U (en) | 2022-09-23 |
Family
ID=83314879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221459880.5U Active CN217482740U (en) | 2022-06-10 | 2022-06-10 | Single-drum longitudinal water-fire tube shell type boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217482740U (en) |
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2022
- 2022-06-10 CN CN202221459880.5U patent/CN217482740U/en active Active
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