CN2320919Y - High-efficiency oil- and gas-fired boiler - Google Patents

Abstract

The utility model belongs to a universal fuel oil or fuel gas boiler. The utility model is characterized in that rib sheets are arranged in a flue section which is circled by a boiler housing and a flue housing, the rib sheets are arranged according to the structure that the shape of the cross section of the flue is triangular, and the rib sheets are welded on the shell of the boiler housing. Compared with the structure of rib sheets which are arranged in a radiant type with equal pitch, the heating surface can be increased for twice, so that the heat efficiency of the boiler can be obviously enhanced, the temperature of exhausted smoke can be reduce, and relatively, the volume of the boiler can be decreased, and steel consumption can be decreased. The utility model is suitable for both industrial and civil boilers.

Description

High efficiency fuel combustion gas shell boiler

The utility model belongs to boiler, and it is the smaller hard flour pancake boiler of a kind of fuel oil or combustion gas.

Existing fuel oil or gas fired-boiler, there are vertical and horizontal two types, for utilize flue gas with heat, be provided with the structure of convection heating surface, horizontal chamber furnace (oven) generally imports heat in the water into by smoke pipe, vertical heater generally absorbs heat by diametral rib and is delivered in the water, and diametral rib such as presses at the pitch setting.Comparatively speaking, it is low that they all exist heat transfer coefficient, and the steel consumption is big, bulky shortcoming, so exhaust gas temperature is higher, using energy source is insufficient.

The purpose of this utility model is to propose a kind of improved high efficiency fuel gas fired-boiler, and it improves the convection heating surface of flue gas to adopt the fin that increases, thereby improves boiler thermal output.

High efficiency fuel gas fired-boiler of the present utility model, mainly comprise burner, flue, shell, admission port, end socket, smoke box, cigarette shell, fin and outlet flue, the fin that it is characterized in that being arranged in the flue section that shell and cigarette shell surround consists of leg-of-mutton flue shape of cross section, and is welded on the shell outer wall.

The utility model and radial radiation-type setting etc. the pitch fin compare, fin quantity has increased by one times, the boiler smoke heat output increases, boiler capacity is significantly improved.Therefore under the situation of same size, the steel of boiler consumes reduce all corresponding with volume.

Fig. 1 is the utility model vertical boiler example structure schematic diagram.

Fig. 2 is a triangular fin frame mode schematic diagram.

Fig. 3 is a horizontal boiler example structure sketch.

Fig. 4 is the pitch rib structure schematic diagrames such as radiant type of correlation technique.

Now further be illustrated in conjunction with the foregoing description accompanying drawing.

As shown in Figure 1, vertical boiler of the present utility model, basic structure and general boiler are similar, it comprises burner 9 and flue 2, be smoke box 5 below the flue, flue surrounds shell 3 outward, and upper and lower side respectively is provided with low head 1 and 4, form a flue C between shell 3 and the cigarette shell 6, the centre in the flue vertically is provided with fin 7 for one section.The set-up mode of fin as shown in Figure 2.Fig. 2 from the boiler taken transverse partial cross section, wherein A is a burner hearth, B is a pot water cavity, the flue section vertically is provided with, fin is the setting of triangle mode structural arrangement by the flue cross section, fin 7 is welded on the outer wall of shell 3, fin can adopt shaped steel, or band steel is formed.

Different burners in the utility model boiler can be applicable to fuel oil or gas fired-boiler respectively, burning high-temperature flue gas that device sprays into oil (or gas) and air burning generation among the burner hearth A in the flue 2 is delivered to heat in the stove water between flue 2 and the shell 3 with heat radiation and heat exchange pattern, it is heated up produce hot water, steam, flue gas is through lower smoke box 5 afterwards, flow into the flue C between shell 3 and the cigarette shell 6, flue along 7 formation of its fin rises, and discharges from outlet flue 8 at last.In flue gas was flowed through the flue process, fume afterheat was given pot water by fin 7 and shell 3 surface conductive and is obtained recycling comparatively fully.

Horizontal boiler shown in Figure 3, burner hearth A internal combustion fuel oil or combustion gas are heated water in the pot water cavity B, and flue (chamber) C is surrounded by shell 3 and cigarette shell 6, and fin 7 triangularity modes are located in the flue C.

Fig. 4 is the structure of general boiler fin, is pitch modes such as radiant type, and is easy to process, but heat exchange area is little, and the thermal efficiency is lower.

The utility model adopts triangle mode structure that fin is set, because heat exchange area increases, the thermal efficiency obviously improves, with specification be the boiler of 0.2 ton of/hour evaporation capacity be example relatively, boiler capacity improves 20%-30%, exhaust gas temperature is lower than 250 ℃.

Claims (1)

1, a kind of high efficiency fuel combustion gas shell boiler, mainly comprise burner (9), flue (2), shell (3), admission port, end socket (1 and 4), smoke box (5), cigarette shell (6), fin (7) and outlet flue (8), the fin (7) that it is characterized in that being arranged in the flue section that shell (3) and cigarette shell (6) surround consists of leg-of-mutton flue shape of cross section, and fin (7) is welded on shell (3) outer wall.

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