CN2184853Y

CN2184853Y - Double cavity steam boiler

Info

Publication number: CN2184853Y
Application number: CN 94203586
Authority: CN
Inventors: 胡誉春
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-18
Filing date: 1994-02-18
Publication date: 1994-12-07
Anticipated expiration: 2004-02-18

Abstract

The utility model relates to a double cavity steam boiler, comprising an outer cavity 10, an inner cavity 9 which is in elliptical arc surface at the upper part and the bottom part, a cambered fume hood 1, a chimney positioned at the center of the top of the boiler, a water inlet pipe 11, a boiling water pipe 7, a steam pipe 2, secondary air pipes distributed along the circle at the lower part of a boiler shell, a regulating device 13, a water gage 6, a sewage pipe 21 and two to four inclined horizontal water pipes 12 welded at the lower part of the outer cavity 10. The cold water enters the boiler from the bottom of the inner cavity, and the steam is leaded out from the steam pipe at the side of the upper part of the outer cavity 10 after being heated. The boiler has the advantages of reasonable structure, simple manufacturing process, high steam production, high thermal efficiency and no special requirement to the kind of the coal.

Description

Double cavity steam boiler

It is main two courage steam boilers for steam that the utility model relates to a kind of, belongs to E level civil boiler.

CN2087732U discloses a kind of " the two courage multipurpose boilers of combined type ", and its body of heater is made of outer courage and inner bag, and the centre accompanies annular flue, inner bag bottom and top ovalize, and outer casing underpart has some secondary air channels.Chimney is loaded on the furnace roof center, and the petticoat pipe that constitutes furnace roof is an arc surface, and burner hearth is that spherical hearth, fire grate are fixed grate.The two courage multipurpose steam boiler aquifer yields of this combined type are big, and the intensity height can be used as steam oven, shower water heater, uses for boiler continuously.800 kg of water two hours just can be boiled, and maintenance is convenient, and inside and outside courage non-scaling is economized on coal, thermal efficiency height, and smoke abatement and dust control reaches I class area dust emission standard.This stove is main for opening (heat) water, does not satisfy the demand to steam far away, and the manufacturing process trouble.

Task of the present utility model in order to satisfy the needs of user to steam, has been done improvement to the partial structurtes of above-mentioned boiler, makes it to become two courage steam boilers.

Above-mentioned task is achieved in that the inside and outside courage of boiler, and chimney, petticoat pipe, burner hearth, fire grate shape invariance, secondary air channel are still along the boiler jacket circumference uniform distribution.Former water inlet pipe is positioned at outer courage bottom, and cold water enters boiler by outer courage bottom, and boiled water pipe and hot-water line are drawn from the inner bag bottom, and steam pipe is positioned at top, the furnace roof outside.Now water inlet pipe is changed into from center, inner bag bottom and drawing, make cold water enter boiler from the inner bag bottom, boiled water pipe is drawn from the boiler jacket middle part, and steam pipe is drawn from outer courage side top.Welded the horizontal water tube of 2 above slightly inclineds in addition outside on the courage,, improved the steam production and the thermal efficiency of boiler to increase the radiation and convection heat-transfer area.Secondary air channel originally is nonadjustable, has increased louver on the overfiren air port now, can regulate secondary air flow according to the variation of coal, coal seam thickness, chimney height etc. like this, makes burning fully, has increased the adaptability of coal.The water level meter also is retrofitted on the shell.Simplified manufacturing process.

Two courage steam boilers are skillfully constructed, and reasonable in design has simplified manufacturing process greatly, this boiler thermal output height, and gas production is big, and coal is not had specific (special) requirements, and applicability is strong.

Below in conjunction with accompanying drawing an embodiment of the present utility model is done further auspicious stating.

Fig. 1 is the structural representation of two courage steam boilers

Fig. 2 is the sectional view of Fig. 1

Fig. 3 is the A-A cutaway view of Fig. 1

Fig. 4 is the B-B cutaway view of Fig. 1

The drawing explanation: 1 is petticoat pipe, and 2 is steam pipe, and 3 is 180 ° of bend pipes, and 4 is the Pressure gauge base, 5 is the safety valve base, and 6 is the water level meter, and 7 is boiled water pipe, and 8 is location-plate, 9 is inner bag, and 10 is outer courage, and 11 is water inlet pipe, and 12 is horizontal water tube, 13 is secondary air channel and adjusting device, and 14 is the fire door circle, and 15 is the hand hole device, 16 is the stove seat, and 17 is hanger, and 18 is the triangle gusset, 19 is stiffening ring, and 20 is the inner bag leg, and 21 is blow-off pipe.

Two courage steam boilers comprise outer courage 10, and bottom and top are the inner bag 9 of elliptical arc surface, arc petticoat pipe 1 and be positioned at the chimney of furnace roof center, water inlet pipe 11, boiled water pipe 7, steam pipe 2, the circumferential secondary air channel 13 in boiler jacket bottom, water level meter 6, blow-off pipe 21.Water inlet pipe 11 is drawn from center, inner bag bottom, water level meter 6 is contained in shell upper, boiled water pipe 7 is contained in the shell middle part, steam pipe 2 is positioned at outer courage 10 sides top, adjusting device 13 has been installed on secondary air channel, can regulate secondary air flow according to the variation of coal, coal seam thickness, chimney height etc. like this, make coal combustion abundant.The horizontal water tube 12 of two above slightly inclineds has been welded in courage 10 bottoms outside.Cold water enters from inner bag bottom water inlet pipe 11,180 bend pipes 3 by the connection of inside and outside courage top, make water in hydronic process, flow into outside courage 10, the horizontal water tube 12 of two slightly inclineds has been welded in outer courage bottom, the water that enters outer courage is in cyclic process, owing to increased the radiation and convection heat-transfer area, made the gas production of boiler and the thermal efficiency improve.

Claims

1, a kind of pair of courage steam boiler, comprise outer courage 10, bottom and top are the inner bag 9 of elliptical arc surface, arc petticoat pipe 1 and be positioned at the chimney of furnace roof center, water inlet pipe 11, boiled water pipe 7, steam pipe 2, the circumferential secondary air channel 13 in boiler jacket bottom, water level meter 6, blow-off pipe 21, it is characterized in that: water inlet pipe 11 is drawn from center, inner bag 9 bottoms, water level meter 6 is contained in shell upper, and boiled water pipe 7 is drawn from the boiler jacket middle part, and steam pipe 2 is positioned at outer courage 10 sides top, adjusting device 13 has been installed, the horizontal water tube 12 of 2～4 slightly inclineds of outer courage bottom welding on the secondary air channel.