CN2436875Y

CN2436875Y - Vertical Atmospheric Hot Water Boiler with Expansion Joint

Info

Publication number: CN2436875Y
Application number: CN 00244054
Authority: CN
Inventors: 王昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-04
Filing date: 2000-08-04
Publication date: 2001-06-27
Anticipated expiration: 2010-08-04

Abstract

A vertical atmospheric hot water boiler with expansion joint is composed of casing, internal container, convection tube bundle, water inlet and outlet, coal feeding port, chimney, grate, smoke eliminating arch, wall and external dust removing box.

Description

The vertical normal-pressure hot-water boiler that has expansion joint

The utility model relates to a kind of vertical normal-pressure hot-water boiler that has expansion joint.

ZL 92240822.X discloses a kind of " vertical water pipe normal-pressure hot-water boiler ", and it is made up of shell, inner bag, convection bank, intake-outlet, coal filling hole, chimney, fire grate, smoke abatement arch; Its shortcoming is that the convection bank end socket is flat board, and the back that is heated produces huge stress, causes the weld seam many places to be drawn back, and causes boiler to leak, and the scene also is difficult to maintenance.

The purpose of this utility model is to develop the vertical normal-pressure hot-water boiler that has expansion joint that a kind of thermal stress is compensated.

Vertical normal-pressure hot-water boiler of the present utility model is to be made of shell, inner bag, convection bank, intake-outlet, coal filling hole, chimney, smoke abatement arch, be characterised in that flow spoiler is set below convection bank, its structure is on flat-plate closure, weld many half garden shape strip pipes, it can not only play the flow-disturbing effect, also can compensate the horizontal thermal stress that the back that is heated produces, on convection bank, expansion joint is arranged, and its structure also is half garden shape strip pipe, so that eliminate vertical thermal stress that the back that is heated produces.

Embodiment accompanying drawings of the present utility model is as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A sectional drawing of Fig. 1.

Fig. 3 is the B-B sectional drawing of Fig. 1.

As shown in the figure, 1 is convection bank, and 2 is the liquid level meter, and 3 is expansion joint, 4 is the heat-insulation layer shell, and 5 is boiler jacket, and 6 is delivery port, and 7 is flow spoiler, 8 is inner bag, and 9 is coal filling hole, and 10 is fire grate, and 11 is water return outlet, 12 is furnace wall, and 13 is ash bucket, and 14 is smoke abatement arch, 15 is dust cleaning case, and 16 are the chimney inlet, and 17 is deflection plate, 18 is the water overfall, and 19 is drain, and 20 is baffle plate.

Flue gas flow is as follows:

Coal is added on the fire grate 10 from coal filling hole 9, after the high-temperature heat insulation combustion chamber internal combustion of furnace wall 12 and chimney arch 14 formation, in the passage of chimney arch 14 and deflection plate 17 formation, baffling is to dust cleaning case 15, the flue gas stream that has flue dust forms vortex under the effect of flow spoiler 7, the grit that part is big falls, and the less particle reduction of speed in dust cleaning case 15 of part is settled down in the ash bucket 13 that is in the dead angle; The flue gas baffling is to convection bank 1, after the heat exchange, and the convection tube speed passage that is divided into by deflection plate 20 again, baffling after deflection plate 17 stops, can be removed the part grit again therebetween to chimney inlet 16, and making it to fall into ash bucket 13 discharges, flue gas up to standard enters atmosphere through chimney.

The flow process of water is as follows:

From the low temperature backwater of heating system, enter the water leg of furnace shell 5 and inner bag 8 formation from the backwater inlet, enter again in each pipe of convection bank 1, after the heat exchange, the hot water of high temperature enters heating system once more through delivery port 6.

The apparent advantage of the utility model is:

1. expansion joint has compensated vertical thermal stress, and flow spoiler has compensated horizontal thermal stress, guarantees the boiler weldering Seam is not pulled open.

2. smoke abatement and dust control is good, and the lingemann blackness of smoke evacuation is less than 1, and dust concentration is at 100mg/Nm³Below, Reached the first discharge standard of national regulation.

3. dust is easily in time discharged from external ash bucket, can not form reentrainment, can not influence the gravity-flow ventilation of fire grate.

Claims

1. vertical normal-pressure hot-water boiler that has expansion joint, constitute by shell (4), inner bag (8), convection bank (1), water return outlet (11), delivery port (6), coal filling hole (9), chimney inlet (6), fire grate (10) and smoke abatement arch (14), it is characterized in that expansion joint (3) is arranged on convection bank (1), flow spoiler (7) is arranged in its lower section.

2. normal-pressure hot-water boiler as claimed in claim 1 is characterized in that being provided with external dust cleaning case (15) behind at body of heater, and ash bucket (13) is arranged under the dust cleaning case (15), and chimney inlet (16) is preceding deflection plate (17).

3. normal-pressure hot-water boiler as claimed in claim 1 is characterized in that being provided with heat-insulation layer between stove outer covering (5) and heat-insulation layer shell (4).