CN2612899Y

CN2612899Y - Small-sized highly effective shell type heat pipe boiler

Info

Publication number: CN2612899Y
Application number: CN 03241250
Authority: CN
Inventors: 田正渠
Original assignee: WUHAN GAOXIN ENERGY SAVING TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: WUHAN GAOXIN ENERGY SAVING TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2003-04-15
Filing date: 2003-04-15
Publication date: 2004-04-21
Anticipated expiration: 2013-04-15

Abstract

The utility model discloses a small-sized high-effective shell type heat pipe boiler which relates to a shell boiler, particularly a boiler structure in an annular smoke chamber water jacket type. A smoke chamber of the utility model is arranged in a shell, a unique boiler structure in the annular smoke chamber water jacket type is adopted, and vertical transverse-flushing water pipes and heat pipe heat exchange devices are arranged in the annular smoke chamber; the tail of the boiler is provided with a heat pipe air preheater, the smoke exhaust temperature is further lowered, heated hot blast is delivered into the boiler to support the combustion, and the combustion efficiency is enhanced. The utility model has the advantages of compact structure and small volume, the heat loss due to exhaust gas is reduced, the utility model conforms to environmental protection requirements, the gas output is below 2 tons per hour, the pressure is below one megapascal, the gas temperature is saturated, the smoke exhaust temperature of the boiler is below 200 DEG C, and the boiler efficiency is above 90%.

Description

A kind of small-sized efficient pan shell type heat pipe boiler

Technical field

The utility model relates to a kind of smaller hard flour pancake boiler, relates in particular to a kind of annular smoke-box water leg formula boiler structure.

Background technology

Boiler burning light diesel fuel or gaseous fuel (as natural gas, liquefied petroleum gas or artificial coal gas), press the also available auxiliary fuel of customer requirements simultaneously---hot water or steam are produced in electrical heating.

Existing most miniature boiler all is that smoke-box is laid in outside the shell, and having relatively large direct radiation loss (is q ₅And to have relatively large heat loss due to exhaust gas (be q loss), ₂Loss), general exhaust gas temperature about 250 ℃ or more than; In addition, also have considerable heat loss due to combustibles in refuse and heat loss due to unburned gas.Therefore such miniature boiler thermal efficiency is lower, and below 65%, fuel oil (gas) stove is below 85% as the coal furnace thermal efficiency.In addition, too high exhaust gas temperature and uncombusted heat loss also are that environmental requirement institute is unallowed.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned drawback, and a kind of small-sized efficient pan shell type heat pipe boiler is provided.

The purpose of this utility model is achieved in that the inside that smoke-box is laid in shell, has adopted unique annular smoke-box water leg formula boiler structure, except that the water pipe that is laid with vertical transversal flow, also is laid with the heat pipe heat exchanging device in the annular smoke-box; Be provided with heat pipe air preheater at boiler tail, exhaust gas temperature is descended, heated hot blast is sent in the stove combustion-supporting, has improved efficiency of combustion.

Specifically, the utility model entire arrangement as shown in drawings, burner hearth 3 stands on the central part of shell 2, annular smoke-box 4 is enclosed within burner hearth 3 outsides, is connected with circular short tube 6.2 therebetween, circular short tube 6.2 also is the outlet of furnace high-temperature flue gas simultaneously; Annular smoke-box 4 is an enclosed construction, and its arrival end is burner hearth 3 exhanst gas outlets, and the port of export of annular smoke-box 4 also is a circular short tube 6.3, the i.e. outlet of boiler body; Between burner hearth 3 and the annular smoke-box 4 and and shell 2 between be full of a pot water fully, be furnished with big water column 5 in the annular smoke-box 4, with and the inside-and-outside ring gap between form the good water widely different road of circulating, shown in arrow in the accompanying drawing.

From the flue gas of burner hearth 3 outlet, divide both sides respectively to flow around 5 in 180 ° of water pipes in annular smoke-box 4, wash away these tube bundles after, unite two into one again and discharge from circular short tube 6.3, enter boiler tail again; Latter half of along annular smoke-box 4, be laid with a large amount of high efficient heat exchanging elements---A type heat pipe 10a absorbs flue gas heat to strengthen; A type heat pipe 10a its underpart is positioned at annular smoke-box 4, its top is stood in pot hydrospace, its middle part is welded on the tube sheet of annular smoke-box 4, the a large amount of vertical water pipes 5 of process absorb heat and are arranged in the interior A type heat pipe 10a of low cigarette warm area in the semi-circular smoke-box 4 in back, after further absorbing heat again, enter the heat pipe air preheater 11 of boiler tail, in heat pipe air preheater 11, vertically be laid with Type B heat pipe 10b, heat pipe air preheater 11 bottoms are smoke chamber, and its top is an air chamber, after the cold air of room temperature enters, wash away Type B heat pipe 10b top, enter the air inlet of the burner 1 that is laid in the boiler top straight through ajutage 14, by sending into burner hearth 3 after the existing small-sized fan supercharging.The performance of looking 1 gas-distributing fan of burner also can be established the little pressure fan of a minimum power in addition, and 11 inlet airduct places blast air from the heat pipe air preheater.

The utility model is compared with existing small-sized industrial boiler, has the following advantages and good effect:

1. owing to adopted the structure of water leg formula, the fume high-temperature part is among pot water encirclement fully, has reduced direct radiation loss, make compact conformation simultaneously, volume reduces.

2. owing to adopted heat pipe heat exchanging, exhaust gas temperature is greatly descended, this has not only lowered heat loss due to exhaust gas, also compliance with environmental protection requirements.

3. because the setting of heat pipe air preheater, exhaust gas temperature is further reduced more than conventional boiler, also utilize this part heat, remove to add hot-air by heat pipe and go into the stove burning, make combustion process carry out more abundant rationally, the uncombusted loss of machinery and chemistry is reduced.

This shows that the utility model thermal efficiency ratio conventional boiler is greatly improved, make properties of product more first and then reasonable, meet the requirement of the quality of making the life better.

The utility model steam production 2 tons/time below, pressure is below 1 MPa, saturated steam temperature, exhaust gas temperature is below 200 ℃, efficient is more than 90%.

Description of drawings

Fig. 1 is the utility model structural front view;

Fig. 2 is the utility model structure A-A cutaway view.Wherein:

The 1-burner, external member;

The 2-shell, metallic cylinder;

The 3-burner hearth, metallic cylinder, combustion chamber;

4-annular smoke-box;

The 5-water pipe;

The 6-circular short tube, 6.1,6.2, circular short tube before, during and after the 6.3-;

The 7-bearing;

The 8-inspection opening;

9-hand hole or heating patchhole;

10a-A type heat pipe, a kind of outsourcing efficient heat transfer device;

10b-B type heat pipe, a kind of outsourcing efficient heat transfer device;

11-heat pipe air preheater, i.e. heat-pipe air preheater;

The 12-peep-hole;

The 13-refractory material;

The 14-blast pipe;

The vertical smoke pipe of 15-.

The specific embodiment

Further specify below in conjunction with drawings and Examples.

The utility model is made up of following parts, and its assembly relation is as follows:

Shell 2 is fixed on the bearing 7, and burner hearth 3 stands on shell 2 central authorities; Seal by refractory material 13 at the top that burner 1 its burning shower nozzle inserts burner hearth 3, and its fuel inlet port is connected with the fuel efferent duct, and its air inlet is connected with blast pipe 14; Flue gas is discharged by vertical smoke pipe 15;

Annular smoke-box 4 is an enclosed construction, is enclosed within burner hearth 3 outsides, is in shell 2 inside, is connected to a fixed by three circular short tubes 6.1,6.2,6.3 and shell 2 the place aheads, burner hearth 3 the place aheads, shell 2 rears respectively; Annular smoke-box 4 its arrival ends are the exhanst gas outlet of burner hearth 3, and promptly circular short tube 6.2, and its port of export is the outlet of boiler body, and promptly circular short tube 6.3; Be laid with a large amount of vertical water pipes 5 on the annular smoke-box 4;

On the back semi-ring of annular smoke-box 4, also be laid with A type heat pipe 10a;

Heat pipe air preheater 11 is contained in the boiler body afterbody; Heat pipe air preheater 11 its underparts are smoke chamber, with the outlet of annular smoke-box 4---and short tube 6.3 is connected, and its top is an air chamber, is connected with blast pipe 14, wherein is laid with Type B heat pipe 10b;

The bottom of shell 2 is provided with wide-aperture hand hole 9, the patchhole of double as heating.

Claims

1, a kind of small-sized efficient pan shell type heat pipe boiler comprises burner (1), shell (2), burner hearth (3), bearing (7), peep-hole (12), refractory material (13), blast pipe (14), vertical smoke pipe (15); Shell (2) is fixed on the bearing (7), and burner hearth (3) stands on shell (2) central authorities; Seal by refractory material (13) at the top that its burning shower nozzle of burner (1) inserts burner hearth (3), and its fuel inlet port is connected with the fuel efferent duct, and its air inlet is connected with blast pipe (14); Flue gas is discharged by vertical smoke pipe (15);

It is characterized in that:

1. annular smoke-box (4) is an enclosed construction, is enclosed within burner hearth (3) outside, is in shell (2) inside, is connected to a fixed with shell (2) the place ahead, burner hearth (3) the place ahead, shell (2) rear by three circular short tubes (6.1), (6.2), (6.3) respectively; Annular smoke-box (4) its arrival end is the exhanst gas outlet of burner hearth (3), i.e. circular short tube (6.2), and its port of export is the outlet of boiler body, i.e. circular short tube (6.3); Be laid with a large amount of vertical water pipes (5) on the annular smoke-box (4);

On the back semi-ring of 2. annular smoke-box (4), also be laid with A type heat pipe (10a);

3. heat pipe air preheater (11) is contained in the boiler body afterbody; Heat pipe air preheater (11) its underpart is a smoke chamber, is connected with the outlet-short tube (6.3) of annular smoke-box (4), and its top is an air chamber, is connected with blast pipe (14), wherein is laid with Type B heat pipe (10b);

4. the bottom of shell (2) is provided with wide-aperture hand hole (9), the patchhole of double as heating.