CN205279449U - High -efficient plant specimen - Google Patents

Abstract

The utility model discloses a high -efficient plant specimen belongs to boiler technical field. This boiler includes combustion chamber, heat exchange tube, back smoke box, and the high temperature flue gas gets into the back smoke box after trading heat pipe heat exchange, is close to the tobacco pipe of heat transfer tobacco pipe for being provided with the inner fin of back smoke box, and the heat transfer tobacco pipe that is close to the combustion chamber be hollow tobacco pipe, and the high temperature flue gas that the burning back produced at first gets into hollow tobacco pipe, then gets into in the tobacco pipe that is provided with the inner fin and to become the smoke box discharge after from of low temperature flue gas through abundant heat transfer. This boiler has reduced the consumption of fuel, has reduced the total release, and on the other hand can find out because the condensate to NOx's absorption, has further reduced the emission again the utility model discloses have fine economy and environmental benefit.

Description

A kind of high-efficiency vacuum boiler

Technical field

The utility model relates to a kind of vacuum boiler, in particular to a kind of high-efficiency vacuum boiler, belongs to boiler technology field.

Background technology

Vacuum boiler is a kind of explosive evaporatoin and condensing heat-exchange transmission heat of relying on thermal medium, thus the heat-exchange equipment of heated feed water. In recent years, owing to fuel vapor vacuum boiler volume is little, level of automation height, corrosion-free, non-scaling, easy for installation, it is widely used. But in order to avoid heated surface at the end of boiler low temperature corrosion, traditional vacuum boiler funnel temperature is usually above 140 DEG C, this not only consumes a large amount of energy, and improve the running cost of boiler, containing water vapour about 15% ~ 19%(volume in gas fired-boiler flue gas), it is the major vectors of flue gas heat. If the funnel temperature of boiler is reduced to 100 �� of about C, so vacuum boiler efficiency will improve about two percentage points.

Summary of the invention

The purpose of this utility model is to overcome in existing vacuum boiler the above-mentioned defect existed, it is provided that a kind of high-efficiency vacuum boiler.

For realizing the purpose of this utility model, have employed following technical scheme: a kind of high-efficiency vacuum boiler, comprise combustion chamber, heat transfer tube, rear smoke box, high-temperature flue gas enter after heat transfer tube heat exchange after smoke box, heat exchange smoke pipe near rear smoke box is the smoke pipe being provided with interior fin, heat exchange smoke pipe near combustion chamber is hollow smoke pipe, first the high-temperature flue gas produced after burning enters hollow smoke pipe, then enter be provided with interior fin smoke pipe in through abundant heat exchange become low-temperature flue gas from after smoke box discharge, further, the described heat exchange smoke pipe being provided with interior fin adopts and is formed after hollow steel pipe inserts aluminum fin-stock, further, described aluminum fin-stock is two and half shell pectinations, the comb of two and half shell pectinations is crisscross arranged in hollow smoke pipe, further, protective system layer is scribbled at rear smoke box and smoke contacts position.

Positive Advantageous Effects of the present utility model is: a kind of heavy duty detergent vacuum boiler provided by the utility model, combustion chamber is identical with general gas room combusting boiler, first the high-temperature flue gas produced after burning enters common hollow smoke pipe, namely conventional carbon steel smoke pipe, then enter in the band that carbon steel smoke pipe synthesizes with wing pipe in aluminium system in fin smoke pipe through abundant heat exchange become low-temperature flue gas from after smoke box discharge, aluminum fin-stock has excellent acid corrosion-resistant, anti-chlorine ion corrosion performance and heat transfer property, flue gas flows through in pipe, even if having water of condensation to produce also to make the smoke pipe of fin in band corrode to end, protective system is brushed at rear smoke box and smoke contacts position, avoid the corrosion of water of condensation equally, this boiler is in the smoke pipe in the relatively-high temperature district of fire end without aluminium internally finned tube, the smoke pipe of relative cold zone adds fin in aluminium system, heat transfer area can be increased, there is significant cooling-down effect, can prevent again because the water of condensation of flue gas condensing generation is to the corrosion of smoke pipe, decrease the consumption of fuel, reduce total release, on the other hand owing to phlegma is to the absorption of NOx, further reduce again discharge, can find out that the present invention has good economy and environment benefit.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the utility model boiler.

Fig. 2 is the schematic diagram of fin smoke pipe in the utility model band.

Fig. 3 is the schematic diagram of one and half shell pectination fins.

Embodiment

In order to explain enforcement of the present utility model more fully, it is provided that embodiment of the present utility model. These embodiments are only to elaboration of the present utility model, do not limit scope of the present utility model.

By reference to the accompanying drawings that the utility model is detailed further explanation, is respectively labeled as in accompanying drawing: 1: burner, 2: combustion chamber, 3: hollow smoke pipe, 4: the smoke pipe having interior fin, 5: rear smoke box, 6: smoke outlet, 41: hollow steel pipe, 42: half shell pectination fins one, 43, half pectination fin two. as shown in drawings, a kind of high-efficiency vacuum boiler, comprise combustion chamber 2, heat transfer tube, rear smoke box 5, burner 1 burn after high-temperature flue gas enter after heat transfer tube heat exchange after smoke box 5, heat exchange smoke pipe at close rear smoke box 5 is the smoke pipe 4 being provided with interior fin, heat exchange smoke pipe near combustion chamber is hollow smoke pipe 3, the close of cigarette journey is referred near rear smoke box and near combustion chamber, namely hollow smoke pipe 3 is positioned at relatively-high temperature flue gas flow section, the smoke pipe being provided with interior fin is positioned at the flow process section of relative low-temperature flue gas, first the high-temperature flue gas produced after burning enters hollow smoke pipe 3, then enter in the smoke pipe 4 being provided with interior fin through abundant heat exchange become low-temperature flue gas from after smoke box discharge, have the smoke pipe 4 of interior fin to adopt to be formed after hollow steel pipe 41 inserts aluminum fin-stock, described aluminum fin-stock is two half similar shell pectinations, the comb of two and half shell pectinations is crisscross arranged in hollow smoke pipe, fin is arranged on comb surface, groove and male cooperation is adopted to connect between two and half shell shape pectinations, half shell pectination fin 1 as illustrated in the drawing, half pectination fin 2 43, also scribble protective system layer at rear smoke box and smoke contacts position. this high efficiency vacuum boiler is reducing funnel temperature, the aobvious heat of recovered flue gas and latent heat, simultaneously owing to water of condensation in water vapor condensation process can absorb part obnoxious flavour such as SO2, NOx, reduce the discharge of pollutent, be conducive to environmental protection, the present invention can significantly make boiler thermal output improve, when often reducing by 20 �� of C with flue-gas temperature, boiler thermal output improves 1%, existing funnel temperature is from 140 �� of near 100 �� of below C of C, heat utilization rate more than 2% can be improved, save gas fuel 2%, do not need separately to establish environmental protecting device.

After in detail enforcement mode of the present utility model being described, the personage being familiar with this technology can be well understood to, do not depart from above-mentioned claim with spirit under can carry out various change and amendment, all any simple modification, equivalent variations and modifications above embodiment done according to technical spirit of the present utility model, all belong to the scope of technical solutions of the utility model, and the utility model is not also limited to the enforcement mode of example in specification sheets.

Claims (4)

1. a high-efficiency vacuum boiler, comprise combustion chamber, heat transfer tube, rear smoke box, high-temperature flue gas enter after heat transfer tube heat exchange after smoke box, it is characterized in that: the heat exchange smoke pipe near rear smoke box is the smoke pipe being provided with interior fin, heat exchange smoke pipe near combustion chamber is hollow smoke pipe, after burning produce high-temperature flue gas first enter hollow smoke pipe, then enter be provided with interior fin smoke pipe in through abundant heat exchange become low-temperature flue gas from after smoke box discharge.

2. a kind of high-efficiency vacuum boiler according to claim 1, it is characterised in that: the described heat exchange smoke pipe being provided with interior fin adopts and is formed after hollow steel pipe inserts aluminum fin-stock.

3. a kind of high-efficiency vacuum boiler according to claim 2, it is characterised in that: described aluminum fin-stock is two and half shell pectinations, and the comb of two and half shell pectinations is crisscross arranged in hollow smoke pipe.

4. a kind of high-efficiency vacuum boiler according to claim 1, it is characterised in that: scribble protective system layer at rear smoke box and smoke contacts position.