High efficient boiler

Abstract

The invention relates to a high efficient fire standpipe boiler, which generally consists of a boiler housing, a boiler flue, a boiler flue top, an internal upper smoke chamber, a smoke-fire standpipe, a lower smoke chamber, a boiler base and the like. A smoke-fire standpipe bundle is orderly arranged between an upper pipe plate and a lower pipe plate, the smoke-fire standpipe bundle consists of a plurality of metal standpipes, the upper pipe plate and the internal upper smoke chamber are arranged above the smoke-fire pipe bundle, a sealing cover plate which can be opened and is provided with a heat preserving layer is arranged above the upper smoke chamber, a combustion chamber is arranged below the lower pipe plate of a first travel-route smoke-fire pipe bundle, the lower smoke chamber is arranged below the other travel-route smoke-fire pipe bundles, the orientation and the travel route of the smoke are decided by the existence of separating plates inside the upper and the lower smoke chambers and the quantity of the separating plates, and the boiler can be divided into a two-travel-route heat absorption structure, a three-travel-route heat absorption structure and a multi-travel-route heat absorption structure according to the orientation of the smoke in the smoke-fire pipe bundle. Due to the adoption of the smoke-fire pipe bundle consisting of the multi-travel-route metal standpipes, the accumulated charcoal and the water scale can be convenient to clear, the smoke exhaustion temperature can be effectively reduced, and the boiler heat efficiency can be improved; and due to the solving of the local high temperature and the heat expansion stress problems, the overall durability of the boiler can be improved, and the service life of the boiler can be prolonged.

Description

Technical field: [0001] The invention relates to a high-efficiency boiler, which belongs to the technical field of boilers. Background technique: [0002] The vertical horizontal water tube boiler is the simplest structure among the vertical boilers. It is mainly composed of six parts: the pot shell, the head, the furnace, the furnace roof, the horizontal water pipe and the cupola. The vertical horizontal water tube boiler has the advantages of good ventilation and compact structure, but it also has its disadvantages. The bottom horizontal water tube is in a local high-temperature environment, and the thermal expansion stress will always negatively affect the entire heating surface of the boiler during the entire combustion state. In addition, Single-pass heat-absorbing structure boilers have a lot of exhaust heat loss, and the formation and accumulation of scale and ash on the heating surface of the boiler inevitably reduce the heat transfer rate of the entire heat-absorbin...

AI Technical Summary

Problems solved by technology

The vertical horizontal water tube boiler has the advantages of good ventilation and compact structure, but it also has its disadvantages. The bottom horizontal water tube is in a local high-temperature environment, and the thermal expansion stress will always negatively affect the entire heating surface of the boiler during the entire combustion state. In addition, Single-pass heat-absorbing structure boilers have a lot of exhaust heat loss, and the formation and accumulation of scale and ash on the heating surface of the boiler will inevitably reduce the heat transfer rate of the entire heat-absorbing structure

[0003] The disadvantage of the traditional bent fire tube boiler is that although the bent fire tube can absorb the thermal expansion stress, a large thermal expansion stress still exists. The biggest problem of the traditional bent fire tube boiler is that the carbon and ash deposits in the fire tube are difficult to remove easily , especially for civil small-capacity boilers, there is no soot-blowing condition, so large-diameter seamless pipes have to be used as pyrotechnic pipes, so that even if the phenomenon of ash plugging is alleviated a little, the low thermal efficiency is a fact that has to be faced

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