CN2735171Y

CN2735171Y - Oil-gas fired boiler with a water pipe internal furnace

Info

Publication number: CN2735171Y
Application number: CN 200420078349
Authority: CN
Inventors: 王飞; 王和
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-31
Filing date: 2004-07-31
Publication date: 2005-10-19
Anticipated expiration: 2014-07-31

Abstract

The utility model relates to an improved oil-gas fired boiler with a water pipe internal furnace, which is characterized in that two rows of curve water pipes are symmetrically arranged in the inner space of an internal furnace; the excurved concentric arc sections of the two rows of curve water pipes form a burning chamber conforming to the diameter and length of flame, and the chamber is suitable for flame with various diameters and frees the diameter of an internal furnace from the limit of flame diameters. Besides, both ends of the two rows of curve water pipes are communicated with an inner water chamber of a boiler, when flame of fuel oil or fuel gas is burning in the burning chamber, the curve water pipes make the internal radiation heated area of the internal furnace increase. Meanwhile, smoke gas firstly reflows into a smoke pipe from the space between the curve water pipes and the internal furnace, and then reflows to a chimney from the smoke pipe to be discharged outside, so the curve water pipes, the internal furnace and the smoke pipe all absorb partial residual heat to greatly increase the total heated area of the boiler. In addition, the heated curve water pipes form a dynamic head to drive the water in the inner water chamber of the boiler to circulate so that the water is heated quickly and improves heat transfer capability to realize the goal of the effective improvement on the boiler efficiency.

Description

Water pipe flue oil-burning gas-fired boiler

Technical field:

The utility model belongs to the combustion apparatus that uses fluid fuel, and especially a kind of is the combustion apparatus of the fuel-firing gas-firing of feature with the combustion-chamber shape.

Background technology:

Existing pan shell type oil-burning gas-fired boiler, it mainly recepts the caloric and obtains from flue, generally account for the 60%-70% of total caloric receptivity, and general straight flue or the corrugated flue of adopting of existing flue, diameter straight or corrugated flue is subjected to the restriction of flame diameter, cause the heating surface area of flue to be subjected to the restriction of flame diameter, the caloric receptivity of flue also is restricted, so boiler efficiency is lower; See 5.5.10.1. for details by 5.3 and the P344 of the P308 of " oil-burning gas-fired boiler " (Xi'an Communications University publish, in May, 2000 front page) of Zhao Qinxin, Hui Shien chief editor

Summary of the invention:

The purpose of this utility model is a kind of improved water pipe flue oil-burning gas-fired boiler of design, the combustion chamber that water pipe forms can adapt to the flame of various diameters, make the diameter of flue not be subjected to the restriction of flame diameter, increased the circulation of water in the stove simultaneously, thereby improve the caloric receptivity of flue effectively, improve the efficient of boiler.

The purpose of this utility model is achieved like this: a kind of by shell, smoke pipe, manhole, flame-observing hole, the water pipe flue oil-burning gas-fired boiler that heat-insulation layer is formed, it is characterized in that in the inner space of flue, the curved water pipe of two rows is set symmetrically, the all concentric excurvation of arc bend tune of the curved water pipe of this two row forms the combustion chamber that meets flame diameter and length requirement, the flame that can adapt to various diameters, and the diameter that makes flue is not subjected to the restriction of flame diameter, can leave certain clearance between each adjacent curved water pipe of the curved water pipe of this two row, also can mutual adjacent arrangement or the vertical fin of the mutual imbrication that on the periphery of adjacent curved water pipe, is welded to form sealing surface, in addition, the two ends of the curved water pipe of this two row all communicate with hydroecium in the boiler; When the flame of fuel oil or combustion gas burns in this combustion chamber, curved water pipe had both increased the area that radiation is heated in the flue, guaranteed the normal temperature of flame in the combustion chamber again, flue gas refluxes from bend the space between water pipe and the flue earlier and enters smoke pipe in addition, and then after refluxing, smoke pipe effluxes to chimney, total heating surface area of boiler is improved widely, in addition, after curved water pipe is heated, form dynamic head, make the circulation of the water generates in the hydroecium in the boiler, water is heated fast and has improved the ability of conducting heat, and has just realized improving effectively the purpose of boiler efficiency.

The utility model is rational in infrastructure, and is safe and reliable, and the combustion chamber can adapt to the diameter of various flames, and heating surface area is big, thermal efficiency height.

The water pipe flue oil-burning gas-fired boiler of the utility model being carried below in conjunction with drawings and Examples is further described.

Description of drawings:

Fig. 1 is the main cross-sectional schematic of the water pipe flue oil-burning gas-fired boiler carried of the utility model.

Fig. 2 is that A-A overlooks and partly cuts open schematic diagram among Fig. 1.

Fig. 3 is a B-B cross-sectional schematic among Fig. 1.

The specific embodiment:

From Fig. 1, Fig. 2, among Fig. 3 as can be seen: a kind of by shell 1, smoke pipe 11, manhole 10, flame-observing hole 8, the water pipe flue oil-burning gas-fired boiler that heat-insulation layer 6 is formed, it is characterized in that in the inner space of flue 2, the uniform symmetrically curved water pipe 3 of two rows that is provided with from left to right, leave certain clearance between each adjacent curved water pipe 3, also can mutual adjacent arrangement to form sealing surface, though or leave certain clearance, the vertical fin of mutual imbrication is to form sealing surface but the outside of adjacent curved water pipe 3 is welded, the all concentric excurvation of the arc bend tune of the curved water pipe 3 of two rows before and after this, the combustion chamber 12 that meets flame diameter and length requirement with formation, this combustion chamber 12 can adapt to the flame of various diameters and make flue 2 not be subjected to the restriction of flame diameter, simultaneously, the two ends of each curved water pipe 3 all communicate with hydroecium 4 in the boiler, so, when fuel oil or combustion gas are burnt in combustion chamber 12, each curved water pipe 3 equal raying heat, curved water pipe 3 had both increased the area that radiation is heated in the flue 2, guaranteed the normal temperature of flame in the combustion chamber 12 again, be back to the chamber 5 of strile-bacing, the right side in addition the space of flue gas between curved water pipe 3 and flue 2 earlier, and then be back to the chamber 7 of strile-bacing, a left side through smoke pipe 11 and efflux from chimney 9 again, in the process of this backflow, flue 2, curved water pipe 3, smoke pipe 11 equal absorption portion waste heats, just improved total heating surface area of boiler widely, in addition, after curved water pipe 3 is heated, form dynamic head, make the circulation of the water generates in the hydroecium 4 in the boiler, water is heated fast and has improved the ability of conducting heat, and has just realized improving effectively the purpose of boiler efficiency.

Claims

1, a kind of water pipe flue oil-burning gas-fired boiler of being made up of shell (1), smoke pipe (11), manhole (10), flame-observing hole (8), heat-insulation layer (6) is characterized in that:

A, in the inner space of flue (2), the uniform symmetrically curved water pipe (3) of two rows that is provided with from left to right, leave certain clearance between each adjacent curved water pipe (3), two rows bend all concentric excurvation of arc bend tune of water pipe (3) before and after this, meet the combustion chamber (12) of flame diameter and length requirement with formation;

The two ends of b, each curved water pipe (3) all communicate with hydroecium (4) in the boiler.

2, water pipe flue oil-burning gas-fired boiler according to claim 1 is characterized in that each adjacent mutual adjacent arrangement of curved water pipe (3) is to form sealing surface.

3, water pipe flue oil-burning gas-fired boiler according to claim 1, it is characterized in that each adjacent curved water pipe (3) though between leave certain clearance, the outside of adjacent curved water pipe (3) is welded the vertical fin of mutual imbrication to form sealing surface.