CN2126901Y - Horizontal pipe hot-water boiler - Google Patents

Abstract

The utility model relates to a horizontal type water pipe quick mounted hot water boiler with the natural circulation, comprising a longitudinal boiler barrel, a boiler hearth, a smoke channel, a front collecting tank, a water cooled wall, a lower collecting tank and an air supply device which is composed of the longitudinal air channel of the base, the transverse air channel of the lower part of the chain fire grate and an air chamber. The interior of the smoke channel is provided with a plurality of partition plates which split the smoke channel into the upper and lower zigzag structure. The interior of the smoke channel is transversely and vertically provided with a plurality of oblique straight pipe screens which are composed of the communicating water pipes of the both sides of the smoke channel and the counterflow water pipes. The both ends of the counterflow water pipes are communicated with a communicating water tank. One communicating water pipe is communicated with the lower collecting tank. The utility model has the advantages of less drilling and bent tubes, simple manufacturing process, good dust removing effect and high thermal efficiency.

Description

Horizontal pipe hot-water boiler

The utility model belongs to horizontal water pipe fast-assembling hot water boiler with natural circulation.

Now, domestic horizontal water pipe fast-assembling hot water boiler with natural circulation adopts two drums or two next part casees of a upper drum, welding or expanded joint are in a large number to overflow pipe between drum and the drum or between drum and the next part case, each has two elbows at least to overflow pipe, and the convection heating surface that this structure constitutes has following shortcoming; 1, the processing pore that quantity is many, required precision is very high on drum and the next part case makes that the manufacture difficulty of drum, next part case is big; 2, need a large amount of double bends to overflow pipe, the bend pipe workload is big, the bend pipe difficulty is big, complex process, consumption material are many; 3, drum, next part case with to overflow pipe assembling require tight, operation is numerous and diverse, assembly period is long; 4, the flue gas level washes away, is unfavorable for that flue dust separates, original discharge concentration is higher in the flue in stove; 5,, the raising that influence the thermal efficiency less to overflow pipe available heat exchange area.

The horizontal water pipe Natural Circulation packaged boiler that the purpose of this utility model provides a kind of boring, bend pipe is less, technology is fairly simple, assembly period is short, its smoke medicining dust-removing effect is good, the thermal efficiency is higher.

To achieve these goals, the utility model is taked following structure: it comprises a drum, burner hearth, preceding collection case, flue, exhaust opening, traveling-grate stoker, air supply device, base, heat-insulation layer, two next part casees, two water-cooling walls, the vertical horizontally-arranged installation of drum, two water-cooling walls are in the both sides of drum lower hearth, the tiltedly curved and drum UNICOM in the upper end of water screen tube, its lower end and next part case UNICOM, before the next part case, all there are a down-comer and drum UNICOM in back two ends, the two ends and the next part case UNICOM of preceding collection case, flue is located at after the drum lower hearth, air supply device by the air compartment of the some vertical distributions under two vertical air channels that are positioned at key bar fire grate both sides base and the traveling-grate stoker and laterally the air channel form, laterally the two ends in air channel communicate with vertical air channel, between air compartment and the horizontal air channel air register UNICOM are arranged.Feature of the present utility model is 1, some dividing plates laterally uprightly are set in the flue flue longitudinal subdivision is become several portions, each is installed the dividing plate place and all leaves smoke hatch, on the smoke hatch at adjacent two dividing plate places, upper/lower positions is opposite, 2, the some oblique straight-tube panels of the upright installation of each parts transversely in the flue, oblique straight-tube panel is by in a row somely constituting overflow pipe that two UNICOM's water pipes of both sides and two ends and UNICOM's water pipe link, one is long and the other is short for two UNICOM's water pipes, the upper end of UNICOM's water pipe bends towards drum and drum UNICOM, overflow pipe is tilted to install, the direction to the angle of inclination of overflow pipe of adjacent two oblique straight-tube panels is opposite, the long UNICOM's water pipe and the next part case UNICOM of each oblique straight-tube panel.

Air is sent into air channel, air compartment by blower fan, supply with the coal seam through traveling-grate stoker then, coal carries out heat exchange in burner hearth internal combustion and two side walls, and the high-temperature flue gas that burning generates enters flue, the upper and lower several times of turning back, the transversal flow oblique straight-tube panel to overflow pipe, flue dust in the flue gas drops to flue, reduces the boiler original discharge concentration, simultaneously the waste heat of flue gas pass to oblique straight-tube panel to overflow pipe, its heat transfer coefficient height, improved the thermal efficiency of boiler, last flue gas is discharged by exhaust opening.

Water in the drum is descended naturally by down-comer and enters the next part case, and the UNICOM's water pipe by water screen tube or oblique straight-tube panel after burner hearth, flue are burnt heat by pyrotechnics, flue gas enters drum naturally, outwards supplied water by outlet pipe.

In order further to improve the thermal efficiency, the utility model also can be done following improvement: the preceding chimney arch horizontally set fore-and-aft tilt of burner hearth, the inclination angle is 40 °-50 °, back chimney arch vertical equity is provided with, the projected area of back chimney arch on traveling-grate stoker accounts for the 50-65% of traveling-grate stoker upper strata area, back chimney arch is 500-600mm apart from traveling-grate stoker, and preceding chimney arch inclined plane highest point is higher than back chimney arch 300-500mm; Before the burner hearth rear pass, secondary furnace is set, two water-cooling walls extend to the secondary furnace both sides, secondary furnace is positioned at chimney arch top, back, secondary furnace is forward and backward to have mid-board, mid-feather that secondary furnace and burner hearth and flue are separated respectively, there is smokestack the both sides of mid-board burner hearth and secondary furnace UNICOM, and secondary furnace is by the smokestack and the flue UNICOM on mid-feather top; The sprocket diameter that traveling-grate stoker is used is bigger more than 30% than the chain fire-gate sprocket diameter of equal heating load; The bottom in air compartment and horizontal air channel is sealed by base plate, after having done above-mentioned improvement, each air compartment can independently be blown, do not interfere with each other, can realize air zoning effectively, regulate air quantity according to each coal, cooperate rational forward and backward chimney arch, improved efficiency of combustion and smoke medicining dust-removing effect, it is better to have added the secondary furnace effect.

Because the utility model takes to install the upper and lower flue structure of turning back of oblique straight-tube panel, compare with the horizontal water pipe fast-assembling hot water boiler with natural circulation of identical heating load and to have following advantage: the heat-exchanging part that 1, adopts oblique straight-tube panel, make the boring workload and the bend pipe workload of drum, next part case reduce 2/3rds, boiler shortens 1/3rd assembly period, helps tissue and produces in batches; 2, flue gas upper and lower several times of turning back in flue are convenient to flue dust and are separated with flue gas, have reduced original discharge concentration, the decline 5-10% of boiler, simultaneously the sweep of gases oblique straight-tube panel to overflow pipe, heat-transfer effect is good, the thermal efficiency is higher.

If the improved burner hearth of employing the utility model, sprocket wheel and independent air compartment and secondary furnace that diameter is bigger, layout and maintenance that then traveling-grate stoker is not only stressed evenly, running is reliable steadily, be convenient to air compartment, and can realize the reasonable independent air distribution of each air compartment segmentation, sufficient combustion, can regulate air quantity according to various coals; Secondary furnace makes flue dust separate after-flame, makes the coal dust burning in pyrotechnics, the flue gas, also can further improve the thermal efficiency, the reduction original discharge concentration of boiler, and the thermal efficiency also can improve 2-3%, and original discharge concentration also can be lowered into 3-5%.

Detailed structure of the present utility model is provided by embodiment and accompanying drawing thereof.

Fig. 1 is the longitudinal sectional view of most preferred embodiment of the present utility model.

Fig. 2 is the cutaway view along B-B line among Fig. 1.

Fig. 3 is the cutaway view along Figure 1A-A line.

Fig. 1, Fig. 2, Fig. 3 have described the structure of the utility model most preferred embodiment, two water-cooling walls that are positioned at burner hearth (25) both sides that the utility model has a horizontally-arranged drum (2), burner hearth (25), preceding collection case (23), flue (7), exhaust opening (13), traveling-grate stoker (21), base (35), heat-insulation layer (27), two next part casees (15), be made up of water screen tube (26), by vertical air channel (34) and the horizontal air supply device that constitutes of air channel (18) and air compartment (19).The upper end of water screen tube (26) and drum (2) UNICOM, its lower end and next part case (15) are connected, and the rear and front end of next part case (15) is by down-comer (28), (30) and drum (2) UNICOM.Two ends and two next part casees (15) of preceding collection case (23) are connected by pipeline, laterally the two ends in air channel (18) communicate with two vertical air channels (34), vertically there is air inlet (36) in air channel (34), laterally between air channel (18) and the air compartment (19) air register (17) is arranged.Flue of the present utility model is last, the flue of turning back down, the flue of most preferred embodiment (7) is separated into three parts by dividing plate (8) and dividing plate (11) makes flue (7) become horizontally-arranged serpentine, three parts of flue (7) are all installed some oblique straight-tube panels (6), (10), (12), oblique straight-tube panel (6) is by somely constituting overflow pipe (38) that UNICOM's water pipe (32) and UNICOM's water pipe (37) and two ends communicate with two cross over pipes, UNICOM's water pipe (32), (37) upper end and drum (2) UNICOM, UNICOM's water pipe (32) lower end closed, UNICOM's water pipe (37) is longer than UNICOM water pipe (32), its lower end and next part case (15) UNICOM, the angle that overflow pipe (38) is tilted of two adjacent oblique straight-tube panels (6) is opposite.

Preceding chimney arch (24) the horizontally set fore-and-aft tilt of the burner hearth of most preferred embodiment of the present utility model (25), the inclination angle is 45 °, back chimney arch (1) vertical equity setting, its projected area on traveling-grate stoker (21) accounts for 50% of traveling-grate stoker (21) top, apart from traveling-grate stoker (21) 500mm, the highest point on preceding chimney arch (24) inclined plane is higher than back chimney arch (1) 300mm, in order to cooperate above-mentioned chamber structure, the traveling-grate stoker of present embodiment (21) adopts the big sprocket wheel (20) of diameter, so that under horizontal air channel (18) and air compartment (19) base plate (16) being installed seals the bottom of horizontal air channel (18) and air compartment (19), realize that each air compartment segmentation independently blows, and make traveling-grate stoker (21) running steadily reliable.Present embodiment also is provided with secondary furnace (4), there are two draining cold wall pipes its both sides, by mid-board (3) and mid-feather (14) it and burner hearth (25) and flue (7) are separated, there is smokestack (29) both sides of mid-board (3), and smokestack (5) is arranged at the top of mid-feather (14).

The adjusting rod of air register (17) reaches outside the base (35), use for the open and close air register, some water screen tubes are arranged drum (2) and preceding collection case (23) UNICOM in forehearth supplies (24), also have return pipe (9) and outlet pipe (31), (32) are the rear portion of back chimney arch.

Claims (2)

1, a horizontal water pipe fast-assembling hot water boiler with natural circulation, it comprises a drum, burner hearth, preceding collection case, flue, exhaust opening, traveling-grate stoker, air supply device, base, heat-insulation layer, two next part casees, two water-cooling walls, the vertical horizontally-arranged installation of drum, two water-cooling walls are in the both sides of drum lower hearth, the tiltedly curved and drum UNICOM in the upper end of water screen tube, its lower end and next part case UNICOM, before the next part case, all there are a down-comer and drum UNICOM in back two ends, the two ends and the next part case UNICOM of preceding collection case, flue is located at after the drum lower hearth, air supply device by the air compartment of the some vertical distributions under two vertical air channels that are positioned at key bar fire grate both sides base and the traveling-grate stoker and laterally the air channel form, laterally the two ends in air channel communicate with vertical air channel, and air compartment and horizontal air channel be is characterized in that by air register UNICOM:

--some dividing plates laterally uprightly are set in the flue flue longitudinal subdivision is become several portions, each is installed the dividing plate place and all leaves smoke hatch, and the upper and lower position of the smoke hatch at adjacent two dividing plate places is opposite;

--the some oblique straight-tube panels of the upright installation of each parts transversely in the flue, oblique straight-tube panel is by in a row somely constituting overflow pipe that two UNICOM's water pipes of both sides and two ends and UNICOM's water pipe link, the upper end of UNICOM's water pipe bends towards drum and drum UNICOM, one is long and the other is short for two UNICOM's long tubes, overflow pipe is tilted to install, the direction to the angle of inclination of overflow pipe of adjacent two oblique straight-tube panels is opposite, the long UNICOM's water pipe and the direct UNICOM of next part case of each oblique straight-tube panel.

2, according to the described horizontal water pipe fast-assembling of claim 1 hot water boiler with natural circulation, it is characterized in that:

--the preceding chimney arch horizontally set fore-and-aft tilt of burner hearth, the inclination angle is 40 °-50 °, back chimney arch vertical equity is provided with, its projected area on traveling-grate stoker accounts for the 50-65% of traveling-grate stoker upper strata area, it is 500-600mm apart from traveling-grate stoker, and preceding chimney arch inclined plane highest point is higher than back chimney arch 300-500mm;

--also have a secondary furnace to be positioned at chimney arch top, back, secondary furnace is forward and backward to have mid-board, mid-feather that secondary furnace and burner hearth and flue are separated respectively, there is smokestack the both sides of mid-board burner hearth and secondary furnace UNICOM, flue communicates with secondary furnace by the smokestack on mid-feather top, and the water-cooling wall of burner hearth both sides extends to the secondary furnace both sides;

--the sprocket diameter that traveling-grate stoker is used is bigger more than 30% than the chain fire-gate sprocket diameter of equal heating load;

--the bottom in air compartment and horizontal air channel is sealed by base plate.

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