CN204943877U - Boiler - Google Patents
Boiler Download PDFInfo
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- CN204943877U CN204943877U CN201520479456.0U CN201520479456U CN204943877U CN 204943877 U CN204943877 U CN 204943877U CN 201520479456 U CN201520479456 U CN 201520479456U CN 204943877 U CN204943877 U CN 204943877U
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- Prior art keywords
- fire tube
- boiler
- descending
- combustion gas
- communicated
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Abstract
The utility model provides a kind of boiler, and it comprises: combustion chamber (101); Multiple up fire tube (102) in fan-shaped distribution, its lower end is communicated with described combustion chamber (101), sucks combustion gas from described combustion chamber (101); Multiple descending fire tube (104) in fan-shaped distribution, its upper end is communicated with the upper end of described up fire tube (102), circulation combustion gas; Smoke exhaust pipe (106), it is communicated with the lower end of described descending fire tube (104), and the combustion gas that will flow into from described descending fire tube (104) is discharged; With water jacket (107), it at least surrounds described up fire tube (102) and described descending fire tube (104), utilize the heat of the combustion gas of circulation in described up fire tube (102) and described descending fire tube (104), heat the boiler feed water that described water jacket (17) holds; Wherein, described up fire tube (102) and described descending fire tube (104) are vertically arranged side by side.
Description
Technical field
The utility model relates to boiler, particularly relates to the boiler that a kind of efficiency of combustion is higher.
Background technology
Boiler is a kind of conventional heater, market exists various boiler, the use combustion gas that these boilers have, the solid fuels such as some uses such as coal.But no matter using which kind of fuel, the fire in boiler chamber after the heating, still has the tail gas of a large amount of waste heat directly to discharge from the chimney of boiler, causes very large heat waste.In fact, the stack temperature of plain cylindrical furnace reaches 200 ~ 500 DEG C usually, serious, and chimney even burns aglow, and this suffices to show that plain cylindrical furnace heat loss is very big, wastes energy, does not meet environmental requirement.Although some boiler takes some measures to reduce heat waste, actual effect is unsatisfactory, still there is larger heat waste problem.
Utility model content
The utility model in view of the above problems, provides a kind of boiler, and its structure is simple, and heat waste reduces, and fuel utilization efficiency is higher.
The utility model provides a kind of boiler, and it comprises: combustion chamber (101); Multiple up fire tube (102) in fan-shaped distribution, its lower end is communicated with described combustion chamber (101), sucks combustion gas from described combustion chamber (101); Multiple descending fire tube (104) in fan-shaped distribution, its upper end is communicated with the upper end of described up fire tube (102), circulation combustion gas; Smoke exhaust pipe (106), it is communicated with the lower end of described descending fire tube (104), and the combustion gas that will flow into from described descending fire tube (104) is discharged; With water jacket (107), it at least surrounds described up fire tube (102) and described descending fire tube (104), utilize the heat of the combustion gas of circulation in described up fire tube (102) and described descending fire tube (104), heat the boiler feed water that described water jacket (17) holds; Wherein, described up fire tube (102) and described descending fire tube (104) are vertically arranged side by side.
Preferably, described boiler also comprises: upper smoke box (103), its entrance is communicated with the upper end of described up fire tube (102), outlet is communicated with the upper end of described descending fire tube (104), and the combustion gas flowed into from described up fire tube (102) is distributed to described descending fire tube (104); With lower smoke box (105), its entrance is communicated with the lower end of described descending fire tube (104), outlet is communicated with described smoke exhaust pipe (106), the combustion gas flowed into is imported described smoke exhaust pipe (106) from described descending fire tube (104).
Preferably, described up fire tube (102) and described descending fire tube (104) are symmetricly set on described smoke exhaust pipe (106) both sides and surround described smoke exhaust pipe (106).
Preferably, the length of described up fire tube (102) is greater than the length of described descending fire tube (104).
Preferably, the quantity of described up fire tube (102) equals the quantity of described descending fire tube (104).
Preferably, the sectional area sum of described up fire tube (102) equals the sectional area sum of described descending fire tube (104).
Preferably, the microtubule of described up fire tube (102) and described descending fire tube (104) to be caliber be 28mm, 32mm, 36mm or 38mm.
Preferably, described boiler also comprises the outlet pipe (108) being arranged on described water jacket (107) top and the return pipe (109) be arranged on bottom described water jacket.
Preferably, described upper smoke box (103) is ring-type.
Preferably, described water jacket (107) also surrounds described combustion chamber (101).
The boiler that the utility model provides by arranging up fire tube in water jacket, descending fire tube carrys out the flow path of the combustion gas of the indoor generation of prolonging combustion, thus prolongation heat exchanger time, the heat that fuel combustion is produced more fully is absorbed, and has higher fuel utilization efficiency.
Accompanying drawing explanation
Fig. 1 is the side sectional view of the boiler of an embodiment of the present utility model;
Fig. 2 is the sectional top plan view of the boiler of this embodiment of the present utility model.
Detailed description of the invention
For making those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the boiler that the utility model provides is described in detail.In the drawings, for identical or suitable inscape, mark identical label.Below be only the preferred forms of the utility model boiler, the utility model is not limited in following structure.
Fig. 1 is the side sectional view of the boiler of an embodiment of the present utility model, is to intercept along the central shaft of boiler body; Fig. 2 is the sectional top plan view of boiler shown in Fig. 1, is to intercept along the cross section perpendicular to central shaft.
As shown in Figure 1, the three-pass boiler 100 that present embodiment provides comprises combustion chamber 101, multiple up fire tube 102, upper smoke box 103, multiple descending fire tube 104, lower smoke box 105, smoke exhaust pipe 106, water jacket 107, outlet pipe 108 and return pipe 109.In addition, boiler 100 also comprises the combustor 1011 be communicated with combustion chamber 101.
Structure and the operation principle of boiler 100 is described in detail below in conjunction with Fig. 1 and 2.
Combustion chamber 101 is horizontally set on the bottom section in water jacket 107, and substantially cylindrically, combustor 1011 is arranged on the wall of combustion chamber 101, for importing fuel and air.In the present embodiment, boiler 100 is vertical gas boiler, combustor 1011, for importing combustion gas and air, produces the combustion gas (gas containing heat that fuel and air burning produce) of heat and band heat to make fuel in combustion chamber 101 combustion.In one embodiment, combustor 1011 can be such as natural gas combustion engine or gas producer, for the combustion gas required for burning is supplied in combustion chamber 101.Combustor 1011 also includes igniter, and for lighting combustion gas, the gas outlet/nozzle of combustor 1011 sprays combustion gas to combustion chamber 101, and combustion gas is burnt under igniter effect, and to combustion chamber 101 jet flames.
Below Figure 1 shows that example is described, up fire tube 102 is the long tube vertically arranged, length can be selected as required, such as, be 3 meters.In the present embodiment, multiple up fire tube 102 is arranged above on the right side of combustion chamber 101.As shown in the profile of Fig. 2, multiple up fire tube 102 is in fan-shaped distribution, and each up fire tube 102 is all communicated with combustion chamber 101 and upper smoke box 103, to suck high-temp combustion gas in combustion chamber 101, and combustion gas is imported upper smoke box 103.
Upper smoke box 103 is horizontally disposed airtight annular chamber, and it is positioned at the region, top side of water jacket 107.The left region of upper smoke box 103 is communicated with the upper end of up fire tube 102, and right areas is communicated with the upper end of descending fire tube 104.Particularly, the left region of upper smoke box 103 is stretched into and opening in the upper end of described multiple up fire tube 102, the right areas of upper smoke box 103 is stretched into and opening in the upper end of described multiple descending fire tube 104, like this, by upper smoke box 103, up fire tube 102 is communicated with descending fire tube 104, and the combustion gas flowed into from up fire tube 102 can be distributed to each descending fire tube 104.
Descending fire tube 104 is the short tube vertically arranged, length can be selected as required, such as, be 2 meters.Preferably, the length of descending fire tube 104 is less than the length of up fire tube 102.In the present embodiment, above the right side of combustion chamber 101, multiple descending fire tube 104 is arranged.As shown in the profile of Fig. 2, multiple descending fire tube 104 is in fan-shaped distribution, and each descending fire tube 104 is all communicated with lower smoke box 105 with upper smoke box 103, to import combustion gas from upper smoke box 103, and combustion gas is imported lower smoke box 105.Particularly, the right areas of upper smoke box 103 is stretched into and opening in the upper end of described multiple descending fire tube 104, the right areas of lower smoke box 105 is stretched into and opening in lower end, descending fire tube 104 is made all to be communicated with lower smoke box 105 with upper smoke box 103 like this, thus descending fire tube 104 can suck from upper smoke box 103 combustion gas flowed into by up fire tube 102, and combustion gas is imported in lower smoke box 105.
Up fire tube 102 and descending fire tube 104 adopt such as caliber to be the microtubule of 28mm, 32mm, 36mm, 38mm.Compared to the extra heavy pipe of 51mm or 63mm conventional in prior art, because the thermal decomposition ability of microtubule is strong, up fire tube 102 and descending fire tube 104 can make heat fully be absorbed.
Lower smoke box 105 is horizontally disposed airtight chamber, and it is positioned at the underside area of water jacket 107.One end of lower smoke box 105 is communicated with the lower end of descending fire tube 104, and the other end is communicated with smoke exhaust pipe 106, combustion gas can be imported lower smoke box 105 from descending fire tube 104 like this, then discharge via smoke exhaust pipe 106.
Smoke exhaust pipe 106 lower end is communicated with lower smoke box 105, and upper end is stretched out above water jacket 107, for sucking combustion gas from lower smoke box 105, and is discharged.
Water jacket 107 is arranged on up fire tube 102 and descending fire tube 104 is peripheral, and at least surrounds up fire tube 102 and descending fire tube 104, utilizes the heat of the combustion gas of circulation in up fire tube 102 and descending fire tube 104, heats the boiler feed water that it holds.
Outlet pipe 108 is arranged on the top of water jacket 107, is flowed out in water jacket 107 by the high-temperature water heated from outlet pipe 108.Return pipe 109 is arranged on the bottom of water jacket 107, and the hot water to be added that temperature is lower enters in water jacket 107 from return pipe 109.
Like this, define three-pass boiler 100 of the present utility model, that is, from combustion chamber 101 to upper smoke box 103 (the first backhaul), from upper smoke box 103 to lower smoke box 105 (the second backhaul), from lower smoke box 105 to smoke exhaust pipe 106 (the 3rd backhaul).By this three return structures, extend quirk, and by the up fire tube 102 of fan-shaped arrangement and descending fire tube 104, farthest utilize the waste heat of boiler, reduce heat loss.
Be understandable that, as shown in Figure 1, in the present embodiment, water jacket 107 not only surrounds up fire tube 102 and descending fire tube 104, also surround combustion chamber 101, upper smoke box 103, lower smoke box 105 etc., but, in other embodiments, water jacket 107 also only can surround up fire tube 102 and descending fire tube 104, or carries out respective design according to demand.
Fig. 2 is the sectional top plan view of the boiler that the utility model first embodiment provides.
As shown in Figure 2, up fire tube 102 and descending fire tube 104 are formed as fan-shaped matrix respectively.Up fire tube 102 and descending fire tube 104 are symmetricly set on smoke exhaust pipe 106 both sides and surround smoke exhaust pipe 106.From the high-temp combustion gas of combustion chamber 101 in up fire tube 102 from paper outwardly, flow inwards from paper in descending fire tube 104.
In the embodiment of Fig. 2, up fire tube 102 is identical or roughly the same with the quantity of descending fire tube 104, and caliber is also identical or roughly the same.In other embodiments, can carry out corresponding change as required, such as, the quantity of up fire tube 102 and descending fire tube 104 can be different, and/or caliber can be different.
In the embodiment of Fig. 2, the sectional area sum of up fire tube 102 equals the sectional area sum of descending fire tube 104.In other embodiments, can carry out corresponding change as required, such as, the sectional area sum of up fire tube 102 and descending fire tube 104 can be different.
In addition, composition graphs 1 and Fig. 2 known, upper smoke box 103 is ring-types.
Adopt the boiler 100 that present embodiment provides, the high temperature cigarette combustion gas of such as 1000 DEG C produced in combustion chamber 101, on the one hand carry out heat exchange by the boiler feed water to be heated in the chamber wall of combustion chamber 101 and water jacket 107, be introduced in up fire tube 102 on the other hand, and upwards flow into upper smoke box 103, then the combustion gas of inflow is distributed to descending fire tube 104 by upper smoke box 103, and combustion gas enters lower smoke box 105 by descending fire tube 104 from upper smoke box 103, finally discharges from smoke exhaust pipe 106.The water needing to be heated is held in water jacket 107, high-temp combustion gas gas is in above-mentioned flow process, heat exchange is carried out by the water in the duct wall of up fire tube 102 and descending fire tube 104 and water jacket 107, releasing heat carrys out the water in heating water jacket 107, through heat exchange, temperature is lower at upwards flow process for the high-temp combustion gas of such as 900 DEG C, during arrival upper smoke box 103, temperature is reduced to such as 300 DEG C, when entering lower smoke box 105 through descending fire tube 104, through heat exchange, temperature reduces again, the combustion gas temperature of discharging from smoke exhaust pipe 106 is such as 50 ~ 60 DEG C, as can be seen here, heat contained in combustion gas is after twice heat exchange, major part is used to the water in heating water jacket 107, as can be seen here, adopt the boiler of present embodiment, the heat that fuel combustion produces is fully used, thus can fuel saving relatively.
Be understandable that; although the above-mentioned embodiment of the utility model provides gas fired-boiler; but those skilled in the art can carry out designing according to principle of the present utility model and change makes it be applied to solid fuel fired boiler, and it is equally in protection domain of the present utility model.
The illustrative embodiments that above embodiment is only used to principle of the present utility model is described and adopts, but the utility model is not limited thereto.For those skilled in the art, when not departing from spirit of the present utility model and essence, various modification and improvement can be made.These modification and improvement are also considered as protection domain of the present utility model.
Claims (10)
1. a boiler, is characterized in that, comprising:
Combustion chamber (101);
Multiple up fire tube (102) in fan-shaped distribution, its lower end is communicated with described combustion chamber (101), sucks combustion gas from described combustion chamber (101);
Multiple descending fire tube (104) in fan-shaped distribution, its upper end is communicated with the upper end of described up fire tube (102), circulation combustion gas;
Smoke exhaust pipe (106), it is communicated with the lower end of described descending fire tube (104), and the combustion gas that will flow into from described descending fire tube (104) is discharged; With
Water jacket (107), it at least surrounds described up fire tube (102) and described descending fire tube (104), utilize the heat of the combustion gas of circulation in described up fire tube (102) and described descending fire tube (104), heat the boiler feed water that described water jacket (17) holds; Wherein,
Described up fire tube (102) and described descending fire tube (104) are vertically arranged side by side.
2. boiler as claimed in claim 1, is characterized in that, also comprise:
Upper smoke box (103), its entrance is communicated with the upper end of described up fire tube (102), outlet is communicated with the upper end of described descending fire tube (104), and the combustion gas flowed into from described up fire tube (102) is distributed to described descending fire tube (104); With
Lower smoke box (105), its entrance is communicated with the lower end of described descending fire tube (104), outlet is communicated with described smoke exhaust pipe (106), the combustion gas flowed into is imported described smoke exhaust pipe (106) from described descending fire tube (104).
3. boiler as claimed in claim 2, it is characterized in that, described up fire tube (102) and described descending fire tube (104) are symmetricly set on described smoke exhaust pipe (106) both sides and surround described smoke exhaust pipe (106).
4. boiler as claimed in claim 3, is characterized in that,
The length of described up fire tube (102) is greater than the length of described descending fire tube (104).
5. boiler as claimed in claim 3, is characterized in that,
The quantity of described up fire tube (102) equals the quantity of described descending fire tube (104).
6. boiler as claimed in claim 3, is characterized in that,
The sectional area sum of described up fire tube (102) equals the sectional area sum of described descending fire tube (104).
7. the boiler according to any one of claim 1-3, is characterized in that,
The microtubule of described up fire tube (102) and described descending fire tube (104) to be caliber be 28mm, 32mm, 36mm or 38mm.
8. boiler as claimed in claim 2, is characterized in that, also comprise:
The outlet pipe (108) being arranged on described water jacket (107) top and the return pipe (109) be arranged on bottom described water jacket.
9. boiler as claimed in claim 2, is characterized in that,
Described upper smoke box (103) is ring-type.
10. boiler as claimed in claim 1, is characterized in that,
Described water jacket (107) also surrounds described combustion chamber (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479456.0U CN204943877U (en) | 2015-07-06 | 2015-07-06 | Boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479456.0U CN204943877U (en) | 2015-07-06 | 2015-07-06 | Boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204943877U true CN204943877U (en) | 2016-01-06 |
Family
ID=55011296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520479456.0U Expired - Fee Related CN204943877U (en) | 2015-07-06 | 2015-07-06 | Boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204943877U (en) |
-
2015
- 2015-07-06 CN CN201520479456.0U patent/CN204943877U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |