CN200996621Y

CN200996621Y - Boiler with front sheding pipe and built-in smoke steering chamber

Info

Publication number: CN200996621Y
Application number: CN 200620021058
Authority: CN
Inventors: 卢小刚
Original assignee: HARBIN TUANJIE BOILER GROUP CO Ltd
Current assignee: HARBIN TUANJIE BOILER GROUP CO Ltd
Priority date: 2006-06-21
Filing date: 2006-06-21
Publication date: 2007-12-26
Anticipated expiration: 2016-06-21

Abstract

A boiler with a built-in gas reversal chamber formed by adding front-shed tubes is characterized in that the foreside of the shell is a built-in gas smoke box which is made of front-shed tubes and a face arch. The face arch is covered with a refractory lamellar which is formed by coating the water pipes with refractory cements. The hearth communicates with the built-in smoke box through the flue between the shell, and the built-in smoke box communicates with the flue header in the shell.

Description

The canopy pipe forms the boiler of built-in gas reversal chamber before setting up

Affiliated field: the utility model relates to a kind of boiler that preceding canopy pipe forms built-in gas reversal chamber of setting up.

Background technology: horizontal water fire tube shell boiler, its structure all adopts single shell both sides to arrange that water screen tube constitutes burner hearth and secondary furnace heating surface, smoke pipe is set in the shell, and fuel at first carries out radiation heat transfer with shell and water-cooling wall at burn on the fire grate flame that produced and high-temperature flue gas in burner hearth, enter shell smoke pipe, economizer, deduster through aerofoil profile flue, front smoke box enters flue gas in the atmosphere by chimney with air inducing.Above-mentioned boiler overall structure and corresponding heat exchange mode thereof, feasible existing smaller hard flour pancake boiler are for the big boiler of unit interval evaporation capacity, mainly have following several respects problem: 1 furnace height is little, burn insufficient, unburned carbon in flue dust is high, the thermal efficiency is low, smoke pipe wearing and tearing are big.2 above-mentioned boiler heat exchange modes, burner hearth high-temperature flue gas directly act on the shell bottom, boiler bottom very easily deposits a large amount of incrustation scales, makes the shell bottom high-temerature creep phenomenon take place, cause the distortion bulge in addition, influences boiler heat-transfer effect and service life.The easy scaling loss distortion of 3 steel front smoke boxs causes leaks out, safeguards inconvenience.4 front smoke boxs do not have ash-falling hole, deashing inconvenience.

Summary of the invention: the boiler that the purpose of this utility model provides that a kind of combustion efficiency is good, the canopy pipe forms built-in gas reversal chamber before the setting up of long service life.The purpose of this utility model realizes by following structure: the utility model is the boiler that the canopy pipe forms built-in gas reversal chamber before a kind of the setting up, built-in smoke-box is formed by preceding canopy pipe and face arch in the shell front portion, face arch has refractory cement parcel water pipe to form fire-resistant flaggy, burner hearth is connected to built-in smoke-box by shell gap flue, and built-in smoke-box is communicated with smoke pipe in the shell again.The utility model characteristics are as follows: 1 under the situation of original height inconvenience, sets up rear arch, in a disguised form improves furnace height, and combustion efficiency is good, thermal efficiency height.2 side water wall tube cross-entry shells place shell outside the burner hearth, and it is not directly contacted with flame and high-temperature flue gas, have fundamentally solved the disadvantage of shell bulge.Improve heat-transfer effect and service life.3 built-in smoke-boxes have overcome the disadvantage that heat-insulation layer easily comes off and leaks out.4 face arch add ash-falling hole, and deashing is convenient, reduce the blowing out number of times.

Description of drawings:

Fig. 1 is the utility model overall structure cutaway view

Fig. 2 looks cutaway view for the left side of Fig. 1

The specific embodiment:

The utility model as shown in Figure 1 is the boiler that the canopy pipe forms built-in gas reversal chamber before a kind of the setting up, built-in smoke-box is formed by preceding canopy pipe 7 and face arch 9 in shell 6 front portions, face arch 9 has refractory cement parcel water pipe to form fire-resistant flaggy, burner hearth 1 is connected to built-in smoke-box 8 by shell 6 gap flues, and built-in smoke-box 8 is communicated with smoke pipe in the shell again.Upper boiler is provided with two or more shells 6, and shell 6 outsides are the water jacket shell, and the water jacket shell has return pipe and outlet pipe, as shown in Figure 2, the built-in threaded flue 15 of water jacket, threaded flue 15 connects exhanst gas outlet.Top is that shell 6 connects down-comer 16, collection case 10, rear set box 13, side collection case 14 before down-comer 16 connects respectively, and preceding collection case 10 is connected with face arch 9, preceding canopy pipe 7, enters shell 6; Rear set box 13 is connected with last rear arch 3, following rear arch 4, enters shell 6; As shown in Figure 2, side collection case 14 is connected with side wall, side water wall tube 5 cross-entry shells 6; Shell 6 places burner hearth 1 outside.Two rear arched tubes are divided into three sections to burner hearth in the burner hearth, go up rear arch 3 in the burner hearth and form a wall by refractory cement parcel water pipe, have burning gallery between wall and the following rear arch 4.The utility model has the twice rear arch.Face arch 9 has refractory cement parcel water pipe to form refractory slab, has a plurality of ash-falling holes on the plate body, ash-falling hole 11 and back ash-falling hole 12 before being divided into.

Rear arched tube is divided into three sections to burner hearth in the burner hearth, form a wall 2 by refractory cement parcel water pipe in the burner hearth, wall 2 is positioned on the last rear arch 3 at burner hearth middle part, and wall has burning gallery with following rear arch 4, side water wall tube 5 cross-entry shells 6, shell 6 places burner hearth 1 outside.

Claims

1, the canopy pipe forms the boiler of built-in gas reversal chamber before a kind of the setting up, it is characterized in that: built-in smoke-box is formed by preceding canopy pipe and face arch in the shell front portion, face arch has refractory cement parcel water pipe to form fire-resistant flaggy, burner hearth is connected to built-in smoke-box by shell gap flue, and built-in smoke-box is communicated with smoke pipe in the shell again.

2, a kind of boiler that preceding canopy pipe forms built-in gas reversal chamber of setting up according to claim 1, it is characterized in that: upper boiler is provided with two or more shells, the shell outside is the water jacket shell, the water jacket shell has return pipe and outlet pipe, the built-in threaded flue of water jacket, threaded flue connects exhanst gas outlet.

3, a kind of boiler that preceding canopy pipe forms built-in gas reversal chamber of setting up according to claim 1, it is characterized in that: top is shell, and shell connects down-comer, collection case, rear set box, side collection case before down-comer connects respectively, preceding collection case is connected with face arch, preceding canopy pipe, enters shell; Rear set box is connected with rear arch, enters shell; Side collection case is connected with side wall, side water wall tube cross-entry shell; Shell places the burner hearth outside.