CN202546712U - Vertical bent water tube boiler - Google Patents

Abstract

The utility model discloses a vertical bent water tube boiler which solves the problems of low heat efficiency and high exhaust gas temperature of the boiler. The heating surface of a water tube is increased in a boiler liner. The vertical bent water tube boiler comprises a boiler barrel, a boiler liner, a burning chamber, an upper boiler grate and a lower boiler grate, wherein the boiler liner is arranged in the boiler barrel, the upper boiler grate and the lower boiler grate are arranged in a boiler hearth, an upper boiler door is connected with the upper boiler grate, a lower upper boiler grate is connected with the lower boiler grate, the upper boiler grate is a water-cooling boiler grate tube, and the upper boiler grate is connected with boiler liner holes on the boiler liner. The vertical bent water tube boiler is characterized in that boiler liner bent water tubes are longitudinally arranged along the inner wall ring of the boiler liner at the upper part of the boiler hearth, the upper and lower end ports of the boiler liner bent water tubes are connected into the boiler liner holes on the boiler liner, at least one or more groups of boiler liner bent water tubes are arranged along the inner wall ring of the boiler liner, the boiler liner bent water tubes arranged along the inner wall ring of the boiler liner are long and short bent water tubes, and the short bent water tubes are arranged at the inner side of the long bent water tubes. The heat efficiency is increased, dust accumulation in the boiler is avoided, and production process requirements can be better conformed.

Description

A kind of vertical bent water tube boiler

Technical field

The utility model relates to the boiler series products, particularly relates to a kind of vertical bent water tube boiler.

Background technology

Miniature boiler is of many uses on the market; Away from main body city, backwoodsman school, hospital; Processing enterprises such as small towns clothing, non-staple food need the miniature boiler heat supply, and vast rural culture industry or the like all needs heat energy, moreover also has a large amount of reproducible biomass energies on the spot; Like tangerine bar, rice bran etc., all can be used for the boiler for domestic of small low-voltage.

The boiler for domestic of low capacity adopts vertical fire tube boiler mostly at present; Or the version of improved vertical boiler with horizontal water tubes, it has simple in structure, the advantage that floor space is little; But ubiquity undercapacity, the fatal shortcoming that operating thermal efficiency is low, exhaust gas temperature is high; The thermal efficiency of traditional product is about 50%, and exhaust gas temperature all more than 300 ℃, does not meet the requirement of national energy-saving and emission-reduction.

In order to satisfy market demand, to increasing boiler inner conduit heating surface area, improve the thermal efficiency, rational in infrastructure; Reduce stress simultaneously, improve security reliability, engineers and technicians research and develop on boiler structure; Improve the boiler furnace flue temperature, improve heat transfer rate, and practice thrift cost.

Summary of the invention

The purpose of the utility model is for solving the existing problem that the vertical boiler thermal efficiency is lower, exhaust gas temperature is high; A kind of compact conformation is provided, and convection current increases water pipe heating surface, the energy-conservation vertical bent water tube boiler that heat transfer rate is high in the flue; Avoid dust deposit in furnace, more the accords with production technological requirement.

The technical scheme that the utility model adopts: a kind of vertical bent water tube boiler, comprise drum, flue, burner hearth, burning chamber, upper fire-grating, lower fire grating, upper furnace door, lower furnace door, establish flue in the drum; Be provided with upper fire-grating, lower fire grating in the burner hearth; Upper furnace door connects fire grate, and lower furnace door connects lower fire grating, and upper fire-grating is a water-cooled grate tube; Lower fire grating inserts the flue hole on the flue; Mainly be upper furnace, the curved water pipe of flue vertically be set, and the curved water pipe upper and lower port of flue inserts the flue hole on the flue along the inboard wall of furnace circle.

Said flue hole is a radial hole, and connects the curved water pipe port of flue.

The curved water pipe of said flue is provided with at least one group or array along the inboard wall of furnace circle.

The said flue that is provided with along the inboard wall of furnace circle is bent water pipe and is long curved water pipe, the short water pipe of bending, and short curved water pipe is arranged on long curved water pipe inboard.

Said lower fire grating is steel or casting furnace grate bar.

The utility model compared with prior art also has following major advantage:

1, the utility model employing is arranged along inboard wall of furnace curved water pipe vertically is set, and in flue, fully arranges the vertical curved water pipe group of array, and temperature is high in the flue; Heat exchange is strong; On the basis of improving permanent water-tube boiler, increase convection heating surface, the hot-water line heat transfer area increases as far as possible, the convection heating surface that burning chamber and curved water pipe are formed; Being furnished with strengthening and heat transferring device therebetween increases flue gas flow rate and reaches desirable heat-transfer effect, practices thrift steel product cost simultaneously.

2, the utility model is employed in radial aperture on the flue, and curved water pipe port inserts radial hole up and down, constitutes vertically and arranges; Rational in infrastructure, make simply than on the flue top, opening non-radial hole, arrange free; But more curved water pipe is arranged in stagger arrangement, reduces stress simultaneously, improves security reliability.

3, the utility model is owing to vertically be provided with curved water pipe, and the fuel dust stratification can't be piled up on vertical curved water pipe, also can avoid dust stratification, is easy to remove the accords with production technological requirement.

4, bend the water pipe group owing to fully arrange the vertical flue of array in the flue, compact conformation, it is little to take up room; Simplify technology, the curved water pipe of length that the curved water pipe of flue is provided with along the inboard wall of furnace circle, it is inboard that short curved water pipe is arranged on long curved water pipe; Heating surface area is than traditional manying more than one times; Reach designing requirement fully, make exhaust gas temperature reach country and be lower than 230 ℃, the thermal efficiency is higher than 73% energy-conservation requirement.

Description of drawings

Fig. 1 is a kind of vertical bent water tube boiler sketch map of the utility model.

Drum (1), flue (2), flue hole (2-1), flue hole (2-2), the curved water pipe (3) of flue, long curved water pipe (3-1), short curved water pipe (3-2), upper furnace door (4), lower furnace door (5), lower fire grating (6), burner hearth (7), upper fire-grating (8), burning chamber (9).

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

The specific embodiment

As shown in Figure 1, a kind of vertical bent water tube boiler, this boiler are vertical water pipe double-layer grate pan shell type steam boiler, mainly are made up of integral body such as boiler body, base, casting furnace grate, heat-insulation layers.Drum and drum end socket, flue and flue top, vertical layout.

Burner hearth (7) is surrounded by upper fire-grating (8), lower fire grating (6) and flue (2) bottom; The employing double-layer grate back burns.Upper fire-grating (8) is made up of water-cooled grate tube, and upper fire-grating (8) is by steel pipe manufacturing, and upper fire-grating (8) inserts the hole on the flue (2), and lower floor's lower fire grating (6) is a casting furnace grate; Upper furnace vertically is provided with the curved water pipe (3) of flue along flue (2) inwall circle, and the flue hole (2-1) on curved water pipe (3) the upper and lower port access flue of flue (2), and flue (2) has radially flue hole (2-1), connects curved water pipe (3) port of flue again.Flue is bent water pipe (3) and is provided with one group along flue (2) inwall circle; Or array is set; To make the curved water pipe (3-1) of growing up, short curved water pipe (3-2) along the curved water pipe (3) of the flue that flue (2) inwall circle is provided with, short curved water pipe (3-2) is arranged on long curved water pipe (3-1) inboard, and array can be set.

Upper furnace door on the drum (4) connects fire grate (8), and lower furnace door (5) connects lower fire grating (6), and upper furnace door (4) is thrown bunker coal and got into; But and air intake, divide into lower furnace door (5) and slag tap and ash discharge, but and air intake; Establish a plurality of shoot doors on the drum, be used for clearing up the black dirt between burning chamber (9) and the curved water pipe (3) of flue, on the drum of water-cooled grate front end, be provided with inspection opening; Be used for checking the incrustation scale situation in the furnace grate tube, indirectly incrustation scale situation in the curved water pipe of reflection.

Bunker coal gets into upper fire-grating from stove gate, and coal is in the burner hearth internal combustion, with water heating in the water-cooled grate tube of upper fire-grating; Fuel produces smoke and fire; Go up to burning chamber, will heat the convection heating surface that burning chamber and curved water pipe are formed simultaneously along the long and short curved water pipe that the inboard wall of furnace circle is provided with; Arrange that therebetween strengthening and heat transferring device increases flue gas flow rate and reaches desirable heat-transfer effect, flue gas is discharged from the impact tube of flue; The water of the upper fire-grating water cooling tube of heating and the water in the long and short curved water pipe get into drum, and the fritter cinder or the ash of burning fall into lower fire grating, and cinder exports out from slag, and coal ash falls to ash hole from the lower fire grating gap.

Claims (5)

1. a vertical bent water tube boiler comprises drum (1), flue (2), burner hearth (7), burning chamber (9), upper fire-grating (8), lower fire grating

(6), upper furnace door (4), lower furnace door (5), establish flue (2) in the drum (1), be provided with upper fire-grating (8), lower fire grating (6) in the burner hearth (7); Upper furnace door (4) connects fire grate (8), and lower furnace door (5) connects lower fire grating (6), and upper fire-grating (8) is a water-cooled grate tube; Upper fire-grating (8) inserts the flue hole (2-2) on the flue (2); It is characterized in that: upper furnace, along flue (2) inwall circle the curved water pipe (3) of flue is set vertically, and curved water pipe (3) upper and lower port of flue inserts the flue hole (2-1) on the flue (1).

2. a kind of vertical bent water tube boiler according to claim 1 is characterized in that: said flue hole (2-1) is a radial hole, and connects curved water pipe (3) port of flue.

3. a kind of vertical bent water tube boiler according to claim 1 and 2 is characterized in that: said flue is bent water pipe (3) and along flue (2) inwall circle at least one group or array is set.

4. according to claim 1 or 3 described a kind of vertical bent water tube boilers; It is characterized in that: the said curved water pipe (3) of flue that is provided with along flue (2) inwall circle is the curved water pipe (3-1) of stove, short curved water pipe (3-2), and short curved water pipe (3-2) is arranged on long curved water pipe (3-1) inboard.

5. a kind of vertical bent water tube boiler according to claim 1 is characterized in that: said lower fire grating (6) is steel or casting furnace grate bar.

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