CN2177874Y - Flow-spoiling type heat-pipe boiler - Google Patents

Abstract

The utility model relates to a flow-spoiling type heat-pipe boiler. The interior of the fume pipe of the upper part of a boiler hearth is provided with a flow-spoiling device which is composed of spiral fins, which decelerates the exhaust speed of the fume and causes the fume to be further burnt caused by high temperature. The heat radiated by the heat pipe is fully absorbed by the water of the water tank, and the pollution is reduced. One end of a plurality of heat pipes extends into the boiler hearth, and the other end of a plurality of heat pipes extends into the water, which causes the heat of the boiler hearth to be better afferenced into water. The upper boiler grate of the two-layer type boiler grate is composed of water pipes, and is additionally provided with a heat absorbing method. The observation window of an upper boiler door is convenient for operating, which reduces the chance of heat loss. The utility model further improves the heat efficiency, and saves the energy.

Description

Flow-spoiling type heat-pipe boiler

The utility model relates to a kind of normal-pressure boiler, relates more specifically to a kind of disturbed flow type heat pipe boiler.

Normal-pressure boiler is widely used in railroad train, medium and small office, army, school, hospital, hotel etc., with supply boiling water, hot water, steam, heating or the like.Hand in the market burns normal-pressure boiler, and its temperature of discharging flue gas is still very high, generally more than 320 ℃.Produce 100kg steam, the consumption coal is about 14kg, and the thermal efficiency is about 70%, and therefore, heat-energy losses is still than higher.

The purpose of this utility model provides a kind of disturbed flow type heat pipe boiler, can reduce the flue gas discharge temperature, reduces thermal loss, reduces to pollute also and can improve the water tank heat absorption efficiency, thereby the thermal efficiency is improved.

For realizing this purpose, disturbed flow type heat pipe boiler of the present utility model, surround the water tank of sealing between its inner bag and the urceolus, inner bag surrounds a furnace chamber, be positioned at the fire grate and the exit flue that is positioned at roof of the furnace of burner hearth bottom in addition in addition, flue passes inner bag and urceolus from burner hearth, and outer tube outer surface is coated with heat-insulation layer, is provided with fire door on the lower furnace portion sidewall.Also have several heat pipes, the one end is positioned at burner hearth, and the other end passes inner bag and enters water tank; One flow spoiler is arranged in flue, and it is made of the helical fin that is fixed on the flue inwall.

Heat pipe is to utilize Transformation Principle to carry out the original paper of heat conduction, has high thermal conductance; Adopt heat pipe, the heat in the burner hearth can be imported into rapidly and reliably in the water of water tank.And the helical fin formula flow spoiler in the flue makes straight flue become spiral channel, discharges after flue gas is slowly risen twist again, make flue gas at high temperature fully burning and its heat import water tank into by the flue tube wall, further be absorbed; The flue-gas temperature of discharging can be reduced to below 250 ℃, and the further burning of flue gas has reduced pollution.

Below in conjunction with a preferred embodiment, further specify advantage of the present invention and characteristics.

Fig. 1 is the cut-away view of the utility model disturbed flow type heat pipe boiler;

Fig. 2 is that the A of Fig. 1 is to partial view;

Fig. 3 is the stereogram of helical fin.

Please referring to Fig. 1, disturbed flow type heat pipe boiler of the present utility model is installed on the base 1, surrounds the water tank of sealing by inner bag 8 and urceolus 9, and urceolus 9 outer surfaces are coated with a heat-insulation layer 18, surround burner hearth in the inner bag 8.One flue 14 be positioned at the burner hearth center directly over and pass inner bag 8 and urceolus 9.

Two-layer fire grate is arranged among this embodiment, and lower fire grating 2 is a manual anti-burn grate, and upper fire-grating 5 is made of the water pipe that is connected with water tank, with further absorption heat, and coal is burnt more fully.Upper fire-grating 5 is separated into upper furnace 7 and lower hearth 4 with burner hearth, and they have fire door 6 and 3 separately.

Several heat pipes 10 evenly distribute, and the one end extends the top of upper furnace 7, and the other end passes inner bag 8 and enters water tank.The length of heat pipe 10 in burner hearth is about 1/3 of its total length.The heat of heat pipe 10 in making burner hearth imports in the water by inner bag 8, increased a kind of effective heat transfer means again.

The one flow spoiler 13(that is made of helical fin is installed referring to Fig. 3 in flue 14), it makes the circulation of flue gas screw type from changing into of orthoscopic, the velocity of discharge of reducing smoke, the time that flue gas is stayed in flue increases, and the interior also carbon monoxide of last completing combustion of flue gas can further be burnt.Heat in the flue imports into by walling of flue in the water of water tank, has further utilized the heat of flue gas.Simultaneously, also reduced pollution.

On upper furnace door 6, be provided with a transparent observation window 21(referring to Fig. 2).Like this, needn't open fire door and just can observe combustion case, make things convenient for operation, also reduce because of opening the thermal loss that fire door causes.

Be provided with a water level meter 11 on the top of urceolus 9, to show the water level in the water tank.The top is provided with an explosion-proof film 12, to guarantee safety.Jet chimney 15 is sent to each different field of employment by distributing valve 16.Hot water valve 17 is used for hot-water supply, and water intaking valve 19 is used for replenishing unboiled water to water tank.In addition, water tank bottom also is provided with a blowoff valve 20.

Claims (6)

1, a kind of disturbed flow type heat pipe boiler, surround the water tank of sealing between its inner bag and the urceolus, inner bag surrounds a burner hearth, be positioned at the fire grate and the exit flue that is positioned at roof of the furnace of burner hearth bottom in addition in addition, flue passes inner bag and urceolus from burner hearth, outer tube outer surface is coated with heat-insulation layer, is provided with fire door on the lower furnace portion sidewall; It is characterized in that also having several heat pipes, the one end is positioned at burner hearth, and the other end passes inner bag and enters water tank; One flow spoiler is arranged in flue, and it is made of the helical fin that is fixed on the flue inwall.

2, disturbed flow type heat pipe boiler as claimed in claim 1 is characterized in that, described flue is positioned at directly over the burner hearth center.

3, disturbed flow type heat pipe boiler as claimed in claim 1 or 2 is characterized in that, the length of described heat pipe in burner hearth is 1/3 of its total length.

4, disturbed flow type heat pipe boiler as claimed in claim 1 or 2 is characterized in that, described fire grate is made up of upper and lower fire grate, and its lower fire grating is a manual anti-burn grate, and upper fire-grating is made of the water pipe that is communicated with water tank, and burner hearth is divided into upper and lower burner hearth by upper fire-grating.

5, disturbed flow type heat pipe boiler as claimed in claim 4 is characterized in that, described fire door comprises upper and lower fire door, and upper furnace door is positioned on the upper furnace side, and lower furnace door is positioned on the lower hearth side.

6, disturbed flow type heat pipe boiler as claimed in claim 5 is characterized in that, described upper furnace door is provided with a transparent observation window.

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