CN2763739Y

CN2763739Y - Heat-exchanger type water heating boiler

Info

Publication number: CN2763739Y
Application number: CN 200520020120
Authority: CN
Inventors: 姜希申; 姜丽敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-20
Filing date: 2005-01-20
Publication date: 2006-03-08
Anticipated expiration: 2015-01-20

Abstract

The utility model relates to a heat-exchanger type water heating boiler, which solves the problems that the existing water heating boiler has low heat efficiency and the discharged flue gas contaminates the atmosphere. The utility model is characterized in that a combustion chamber (3) and a convection chamber (6) are arranged in a boiler body (25); a smoke outlet hole (24) is arranged between the combustion chamber (3) and the convection chamber (6) which is arranged on the rear part of the combustion chamber (3) which is formed by stacking arch fire resistant concrete (14). A high-temperature flue pipe bundle is arranged in a high-temperature flue (12) on the upper part of the arch fire resistant concrete (14); a high-temperature flue upper header (10) of the high-temperature flue pipe bundle is communicated with a convection chamber upper header (15) of the convection chamber (6); the lower part of the convection chamber (6) is provided with an ash collection box (20), and the rear part is provided with a main smoke outlet hole (23). The heat-exchanger type water heating boiler has the advantages of simple structure, low cost, high thermal efficiency enhancement of the boiler and the discharged smoke gas completely conforms to the environmental protection standard. The Ringelmen blackness of the heat-exchanger type water heating boiler can be reduced to zero.

Description

The heat exchanger type hot-water boiler

Technical field:

The utility model relates to a kind of hot-water boiler, belongs to the heat exchanger type hot-water boiler.

Background technology:

At present, hot-water boiler is generally used by fields such as indoor heating and bathings.The hot-water boiler that generally uses adopts the many of normal pressure, vertical structure, but generally all is handwarmer now; Though this boiler has solved big, the baroque problem of old-fashioned boiler floor space, this boiler can only be used for the heating of a sub-district, and range of application is subjected to certain restriction, and its thermal efficiency still is not well solved.Old-fashioned boiler is still adopted in heating in the large tracts of land scope, and the utilization rate of this boiler heat is still very low, and most of heat all has been wasted, and has the over-emitting black exhaust phenomenon, and environment is still polluted.

The utility model content:

In order to overcome the deficiency that the existing hot-water boiler thermal efficiency is low, flue gas that discharge has pollution to atmosphere, the utility model provides a kind of heat exchanger type hot-water boiler, this boiler structure is simple, exhaust gas temperature is low, thermal efficiency height, and over-emitting black exhaust not, smoke evacuation does not produce pollution to environment, and the lingemann blackness of flue gas can be reduced to zero.

Technical solution adopted in the utility model is: this heat exchanger type hot-water boiler comprises and adds coal bunker; fire grate; water inlet pipe; outlet pipe; cinder notch and boiler body fall; boiler body is made by steel plate; the fire-resistant concrete of interior wall liner; refractory brick; peripheral hardware insulation skeleton; insulation filler and protection iron sheet; be provided with combustion chamber and convection cell in the boiler body; be provided with venthole between combustion chamber and convection cell; convection cell is at the rear portion of combustion chamber; the combustion chamber is built into by the fire-resistant concrete of arch; be provided with the high-temperature flue tube bank in the high-temperature flue on the fire-resistant concrete of arch top; on the high-temperature flue of high-temperature flue tube bank on the convection cell of header and convection cell header be connected; the convection cell bottom is provided with dust collecting box, and there is total venthole at the rear portion.

Above-mentioned said high-temperature flue tube bank is welded by header and water screen tube on header, the high-temperature flue under two high-temperature flues, adopts the fin sealing between adjacent water screen tube.

Above-mentioned said convection cell tube bank is welded by header and following little long header under header, vertical tube, last short tube, the convection cell on the convection cell, seals with fin between vertical tube.

Be provided with closure plate in the header under header and the convection cell on header, the convection cell on the above-mentioned said high-temperature flue, the control water (flow) direction.

The beneficial effects of the utility model are: because this heat exchanger type hot-water boiler, be respectively arranged with tube bank in combustion chamber in boiler body and the convection cell, and the pipe support structural configuration is adopted in tube bank, interbank employing fin sealing, and the water in the tube bank is to adopt the type of flow of turning back in tube bank; Like this, the heat that produces during the stove fuel combustion can fully be absorbed by the water in the tube bank, has improved the thermal efficiency of boiler greatly.Flue gas in stove in the flow process with dust, can most of portion by the fin retaining down, simultaneously, the exhaust gas temperature of boiler has also obtained reducing greatly, and the flue gas of discharging meets environmental protection standard fully, its lingemann blackness can be reduced to zero.This boiler structure is simple, and is cheap, simultaneously, also reduced working strength of workers.

Description of drawings:

Fig. 1 is a schematic top plan view of the present utility model.

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.

Fig. 3 is the B-B sectional structure schematic diagram of Fig. 2.

Fig. 4 is the C-C sectional structure schematic diagram of Fig. 2.

Fig. 5 is the D-D sectional structure schematic diagram of Fig. 3.

1-adds coal bunker among the figure, 2-outlet pipe, 3-combustion chamber, 4-ash disposal hole, 5-closure plate, the 6-convection cell, 7-water inlet pipe, the total venthole of 8-, 9-fire grate, header on the 10-high-temperature flue, 11-water screen tube, 12-high-temperature flue, header under the 13-high-temperature flue, the fire-resistant concrete of 14-arch, header on the 15-convection cell, 16-vertical tube, the last short tube of 17-, header under the 18-convection cell, little long header under the 19-, 20-disposal box, the 21-cinder notch that falls, the 22-fin, the total venthole of 23-, 24-venthole, 25-boiler body.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

In conjunction with Fig. 1 to Fig. 5; a kind of heat exchanger type hot-water boiler; comprise and add coal bunker 1; fire grate 9; water inlet pipe 7; outlet pipe 2; cinder notch 21 and boiler body 25 fall; boiler body 25 is made by steel plate; the fire-resistant concrete of interior wall liner; refractory brick; peripheral hardware insulation skeleton; insulation filler and protection iron sheet; be provided with combustion chamber 3 and convection cell 6 in the boiler body 25; 6 of combustion chamber 3 and convection cells are provided with venthole 24; convection cell 6 is 3 rear portion in the combustion chamber; combustion chamber 3 is built into by the fire-resistant concrete 14 of arch; be provided with the high-temperature flue tube bank in the high-temperature flue 12 on the fire-resistant concrete of arch 14 tops; the high-temperature flue tube bank is by header 13 under two high-temperature flues; header 10 and water screen tube 11 are welded on the high-temperature flue, and 11 of adjacent water screen tubes adopt fin 22 sealings.On the high-temperature flue of high-temperature flue tube bank on the convection cell of header 10 and convection cell 6 header 15 be connected, convection cell tube bank by header on the convection cell 15, vertical tube 16, go up under short tube 17, the convection cell header 18 and down little long header 19 be welded, 16 of vertical tubes are with fin 22 sealings.Convection cell 6 bottoms are provided with dust collecting box 20, and there is total venthole 23 at the rear portion.Be provided with closure plate 5 in the header 18 under header 15 and the convection cell on header 10, the convection cell on the high-temperature flue, the control water (flow) direction.

In actual use, coal is added in the coal bunker 1, start fire grate 9 runnings, coal enters on the fire grate 9 of combustion chamber 3, and coal is under the effect of air-introduced machine 5, air blast 4, burning on combustion chamber 3, fire box temperature can reach 1200 ℃, and the temperature of the high-temperature flue gas of generation is at 800 ℃-1000 ℃, and high-temperature flue gas enters in the high-temperature flue 12 under the effect of air-introduced machine, carry out heat exchange with the water in the high-temperature flue tube bank, make water obtain heating for the first time; Then, high-temperature flue gas enters convection cell 6 again by venthole 24, and the water in restraining with convection cell once more carries out heat exchange; At this moment, the temperature of flue gas is reduced to 90 ℃-120 ℃, flue gas is discharged through total exhanst gas outlet 23, enter economizer, air preheater and deduster etc., at last, flue gas is discharged in the atmosphere by chimney, and the flue-gas temperature that is discharged in the atmosphere is reduced to 60 ℃-80 ℃, the high-temperature flue gas that boiler combustion produces has obtained fully, reasonable use, makes the efficient of boiler greatly improve.

It is cold water that boiler adds water first, adds from water inlet pipe 7, and is full of whole system, then, stops to add cold water in the system, intrasystem water circulation use.The flow process of water is such, and water at first adds by water inlet pipe 7, enters into convection cell tube bank and combustion chamber tube bank, after the abundant heat exchange, enters in the system from outlet pipe 2 in stove, uses for indoor heating.And then return in the boiler, be used for the recirculation of system.Because what the hydromining in this boiler tube bundle was used is the type of flow of Zigzag type, make that the water in the tube bank can carry out sufficient heat exchange with the high-temperature flue gas that boiler produces, drop to the temperature of high-temperature flue gas minimum.This heat exchanger type hot-water boiler, simple in structure, cheap, improved the thermal efficiency height of boiler greatly, and the flue gas of discharging meets environmental protection standard fully, its lingemann blackness can be reduced to zero.

Claims

1; a kind of heat exchanger type hot-water boiler; comprise and add coal bunker (1); fire grate (9); water inlet pipe (7); outlet pipe (2); cinder notch (21) and boiler body (25) fall; boiler body (25) is made by steel plate; the fire-resistant concrete of interior wall liner; refractory brick; peripheral hardware insulation skeleton; insulation filler and protection iron sheet; tool is characterised in that: be provided with combustion chamber (3) and convection cell (6) in the boiler body (25); be provided with venthole (24) between combustion chamber (3) and convection cell (6); convection cell (6) is the rear portion of (3) in the combustion chamber; combustion chamber (3) is built into by the fire-resistant concrete of arch (14); be provided with the high-temperature flue tube bank in the high-temperature flue (12) on the fire-resistant concrete of arch (14) top; on the high-temperature flue of high-temperature flue tube bank on the convection cell of header (10) and convection cell (6) header (15) be connected; convection cell (6) bottom is provided with dust collecting box (20), and there is total venthole (23) at the rear portion.

2, a kind of heat exchanger type hot-water boiler according to claim 1, it is characterized in that: the high-temperature flue tube bank is welded by header (10) on header (13), the high-temperature flue under two high-temperature flues and water screen tube (11), adopts fin (22) sealing between adjacent water screen tube (11).

3, a kind of heat exchanger type hot-water boiler according to claim 1, it is characterized in that: convection cell tube bank by header on the convection cell (15), vertical tube (16), go up under short tube (17), the convection cell header (18) and down little long header (19) be welded, between vertical tube (16) with fin (22) sealing.

4, according to claim 1,2 or 3 described a kind of heat exchanger type hot-water boilers, it is characterized in that: be provided with closure plate (5) on header on the high-temperature flue (10), the convection cell under header (15) and the convection cell in the header (18), the control water (flow) direction.