CN2486851Y

CN2486851Y - Full wave shape furnace chamber back firing chamber oil (gas) boiler

Info

Publication number: CN2486851Y
Application number: CN 01206791
Authority: CN
Inventors: 袁培策
Original assignee: YUAN PIECE
Current assignee: YUAN PIECE
Priority date: 2001-07-11
Filing date: 2001-07-11
Publication date: 2002-04-17
Anticipated expiration: 2011-07-11

Abstract

The utility model which relates to an oil or gas fired boiler with a whole wave-shaped furnace rotary combustor comprises a boiler cylinder, a pipe panel, a threaded flue, an internal furnace, a furnace base and a burner. The utility model is characterized in that the internal furnace and the cylinder of the rotary combustor are made into the shape of whole wave; by adopting the axial expansion deformation of the wave of the internal furnace and the cylinder of the rotary combustor, the thermal stress produced by the shell, the pipe panel and the internal furnace is reduced; the stress is accumulated in the joint of the internal furnace and the pipe panel because of the expansion of the internal furnace, increasing the flexibility of the internal furnace and the heated area of the boiler, increasing the heat transforming efficiency, saving the energy, reducing the hardness of the manufacture process, increasing the quality of the boiler body assembling, welding and fault detecting.

Description

All-wave shape flue chamber fuel oil (gas) boiler that strile-backs

The utility model relates to fuel oil (gas) boiler, and particularly a kind of have strile-back fuel oil (gas) boiler of chamber of all-wave shape flue.

Middle-size and small-size horizontal fuel oil (gas) boiler of the most boiler for producing of China manufacturing firm production at present, in adopting wetting back-type three return structures, flue, straight flue or straight flue and the combination of half-wave shape flue are generally all used in the chamber of strile-bacing, the straight chamber of strile-bacing, in the boiler work, the width of cloth that these parts directly are subjected to thermal-flame is penetrated and the washing away of high-temperature flue gas, shell, the thermal stress that tube sheet and flue itself produces is big, the stress that flue elongation causes in flue and tube sheet junction is concentrated, it is thicker to calculate its material thickness by intensity, steel consumption is big, has increased the technology difficulty that boiler is made simultaneously.

The purpose of this utility model is for overcoming the defective that prior art exists, and proposes a kind ofly have new flue and the all-wave shape flue of the cell structure that strile-backs chamber fuel oil (gas) boiler that strile-backs.

The purpose of this utility model is achieved through the following technical solutions:

All-wave shape flue chamber fuel oil (gas) boiler that strile-backs, form by parts such as drum, tube sheet, threaded flue, flue, stove seat, burners, it is characterized in that: the cylindrical shell of the flue and the chamber of strile-bacing is made all-wave shape, the two ends of corrugated flue are pulled the limit and are docked welding with strile-back front tube sheet, the drum front tube sheet of chamber of waveform respectively, the strile-back cylindrical shell of chamber of waveform is pulled the limit with the tube sheet that strile-backs before and after the chamber and is docked welding, the chamber back tube sheet that strile-backs is pulled the limit with the drum back tube sheet and is docked welding, forms boiler body.

According to the all-wave shape flue that the utility model proposes chamber fuel oil (gas) boiler that strile-backs, utilize flue and the thermal stress of the axial stretching of the chamber cylindrical shell waveform that strile-backs distortion can alleviating shell, tube sheet and flue generation itself, what is more important alleviates flue elongation, and to be connected the stress that causes in the place with tube sheet at flue concentrated, by structural analysis and calculating, under the fixing situation of all-wave shape flue, the two ends, chamber of strile-bacing, the axial thermal stress of flue descends with the increase of waveform number.When the waveform number was 3 or 4, thermal stress can drop to 37.6% and 30.14% of straight flue thermal stress.Adopt the all-wave shape flue chamber of strile-bacing not only to have the flexibility that improves whole flue, prevent that flue from producing the integrality that bigger swell increment is destroyed structure under higher temperature, but also can increase the heating surface of boiler and disturb flame to flow, improve the effect of heat exchange, energy savings 8%.Simultaneously, adopt the waveform chamber of strile-bacing, calculate material thickness through intensity and can reduce 2mm than Yuanping City straight gyrus combustion chamber thickness, thereby saved material and the excessive manufacturing process difficulty that causes of thickness of slab difference when avoiding docking with tube plate thickness is little, improved the quality of boiler body assembling, welding and flaw detection because of the cylindrical shell thickness of the chamber of strile-bacing is big.

Fig. 1 is a structural representation of the present utility model.

Embodiment is further described the utility model below in conjunction with accompanying drawing:

As shown in the figure, all-wave shape flue chamber fuel oil (gas) boiler that strile-backs is made up of parts such as drum 7, tube sheet, threaded flue 12, flue 1, stove seat 8, burners 9, number in the figure 11 is a front smoke chamber, label 6 is a rear smoke chamber, same as the prior art because of these building blocks of boiler, no longer describe in detail here.

The cylindrical shell of the flue 1 and the chamber 3 of strile-bacing is made all-wave shape, the two ends of corrugated flue 1 are pulled the limit and are docked welding with strile-back front tube sheet 2, the drum front tube sheet 10 of chamber 3 of waveform respectively, the strile-back cylindrical shell of chamber 3 of waveform is pulled the limit with the tube sheet 2,4 that strile-backs before and after the chamber and is docked welding, the chamber back tube sheet 4 that strile-backs is pulled the limit with drum back tube sheet 5 and is docked welding, forms boiler body.

In the course of work, fuel is sent into by burner 9 and is carried out diffusion combustion in the corrugated flue 1, the high-temperature flue gas that is produced strile-backs after chamber 3 carries out convection current and radiation heat exchange at corrugated flue and waveform, enter the second backhaul threaded flue, through front smoke chamber's 11 folding turnbacks, enter the 3rd backhaul threaded flue, in smoke pipe, strengthen heat convection, after rear smoke chamber 6 and chimney enter atmosphere.

Indicated the flow direction of flue gas in the accompanying drawing with arrow.

Claims

1. all-wave shape flue chamber fuel oil (gas) boiler that strile-backs, form by parts such as drum, tube sheet, threaded flue, flue, stove seat, burners, it is characterized in that: the cylindrical shell of flue (1) and the chamber of strile-bacing (3) is made all-wave shape, the two ends of corrugated flue (1) are pulled the limit and are docked welding with strile-back front tube sheet (2), the drum front tube sheet (10) of chamber (3) of waveform respectively, the strile-back cylindrical shell of chamber (3) of waveform is pulled the limit with the tube sheets (2,4) that strile-back before and after the chamber and is docked welding, the chamber back tube sheet (4) that strile-backs is pulled the limit with drum back tube sheet (5) and is docked welding, forms boiler body.