CN2283184Y - Vacuum vertical coal-fired boiler - Google Patents

Abstract

The utility model relates to a vacuum vertical coal-fired boiler, which is provided with a tubular condenser in a steam room on a boiler canister. The sealed steam room is connected with a vacuum air pump and forms a vacuum steam room to adjust negative pressure and temperature in the boiler canister when the boiler is in use, consequently making the whole upright boiler canister become a giant heat pipe, which absorbs the heat at the lower part and discharges the heat at the upper part. In addition, a heat-pipe type remaining heat water box is yet arranged on a smoke pipe. The boiler greatly improves the thermal efficiency of the boiler and is visible in energy saving effect. The utility model can make the discharging smoke temperature of the boiler lowered to 120-130 DEG C and the heat efficiency improved by 4-5 %. The boiler doesn't scale. The utility model solves a hang up on the boiler technique currently and can save water-treating equipment and corresponding investment.

Description

Vacuum vertical fire coal boiler

The utility model relates to the vertical fire coal hot-water boiler, particularly a kind of vacuum heat-pipe formula boiler with water-cooled grate.

Existing water-cooled grate coal-burning boiler all is directly to heat water in the drum by stove fire, employing be general diabatic process such as conduction, radiation, convection current, boiler thermal output is low, power consumption is high.Because of water quality can not be pure, influence when conducting heat when serious fouling in the water-cooled grate tube bank, fire grate can burn out because of overheated.And the fouling in the boiler often is difficult to remove.Fouling can make boiler thermal output descend about 5%.For this reason, some boilers need dispose water treatment facilities, cause increasing investment and administrative expenses.Gyp is a puzzlement people's technical barrier for a long time, can't be solved.This class counter-burning type coal-burning boiler generally all is the atmospheric pressure or under pressure operation, and the boiler wall is thicker, and metal consumption is big, the manufacturing difficulty.And common normal-pressure boiler can not be adjusted the temperature of hot water at any time according to user's needs, can not supply several places hot water simultaneously to satisfy various different needs.

The purpose of this utility model is the above-mentioned difficulties that will overcome prior art, and a kind of vertical fire coal boiler that can adjust coolant-temperature gage at any time is provided; By changing the thermal efficiency that heat transfer type improves boiler greatly; And thoroughly the incrustation scale difficult problem that boiler uses is perplexed in solution for a long time.

Solution of the present utility model is: this vertical fire coal boiler comprises drum (1), inner bag combustion chamber (2), water-cooled grate (3), lower fire grating (5), upper furnace door (7), lower furnace door (6) and smoke pipe (9), it is characterized in that inner bag combustion chamber (2) is in vertical drum (1) bottom, play water in the heating drum; In the vaporium (10) on drum (1) top, be provided with trumpet cooler (18), be used to heat the extraneous cold water that feeds; The vaporium (10) of sealing joins with a vavuum pump, forms the vacuum and steam chamber, to regulate negative pressure and the temperature in the drum when boiler is worked, absorbs heat the huge heat pipe of top heat release thereby make whole vertical drum become a bottom.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the longitudinal sectional drawing of vacuum vertical fire coal boiler.

Referring to accompanying drawing, this boiler is a double grate counter-burning type boiler, and hollow water-cooled grate 3 two ends on top directly communicate with drum, work to add hot water.The bottom is a lower fire grating 5.Coal burns in inside of boiler combustion chamber 2, and the ambient water heating is generated steam, and steam rises and is collected in vaporium 10, and trumpet cooler 18 is installed in the vaporium 10, and its water inlet, delivery port pass to the body of heater outside.Condenser preferably adopts the stratiform spiral cold-finger.Emit a large amount of latent heat in the steam condensation process, the cold water that passes condenser pipe is heated rapidly.This is a high efficiency latent heat of phase change diabatic process, and the more generally conduction of its efficient, convection current, radiation will exceed several to tens orders of magnitude.The main characteristics of this boiler are, the vaporium 10 of sealing joins by a joint 16 and a vavuum pump, and vaporium remains on negative pressure state during vavuum pump work, makes vaporium 10 become the vacuum and steam chamber.Its vacuum can reach-0.0015MP.By the negative pressure in the vavuum pump adjusting drum, can regulate the temperature in the boiler, reach the purpose of output different temperatures hot water.When steam promptly becomes condensed water after the heat release of condenser pipe surface, in the lower liquid that under the gravity effect, falls back again.Water in the boiler heats and condensation so repeatedly, has closed circulation of one's own.Only after the long duration, do a small amount of supply.Whole so vertical drum just becomes the huge heat pipe of a bottom heat absorption, top heat release.As everyone knows, heat pipe has high heat transfer efficiency, and this is the high reason of this boiler efficiency just.

Because the hydromining closed circulation in the boiler, consumption is very few, therefore can adopt treated soft water or distilled water.Even long-term the use, any position in the stove scale formation can not occur yet.Thereby make the fouling difficult problem of puzzlement boiler industry be able to basic solution.Water-cooled grate fouling, the phenomenon of stopping up, burning out have not existed yet.Not high because of hot water temperature, mobile big for the user, so the whole cooker furnace system does not need to be equipped with any water treatment facilities again.

In order to make full use of the waste heat in the boiler flue, this boiler is provided with heat pipe-type waste-heated water-tank 13 on smoke pipe 9, and smoke pipe 9 passes water tank, forms ring-shaped water jacket 14 between smoke pipe and water tank, and the heat absorbing end of heat pipe heat 15 is in the smoke pipe 9, and release end of heat is in the water jacket 14.

Among the figure, 2 sides are provided with boiled water tank 4 in the inside of boiler combustion chamber, and the heat absorbing end of heat pipe heat 41 is in the inner bag combustion chamber 2, and release end of heat is in the boiled water tank 4.This sample boiler can also be supplied boiling water in hot-water supply.

Above-mentioned trumpet cooler 18 is the stratiform spiral cold-finger preferably, and its diameter is little, wall is thin, compact conformation, thermal efficiency height., it can be divided into 2～4 groups, supplies the hot water of different places or different purposes respectively.

In addition, also there is not safety valve 11 on the drum shell.Electric contact pressure vacuum gauge 12, upper furnace door 7 and lower furnace door 6 etc.Adopt electro connecting pressure gauge that vaccum pump motor is controlled automatically, automaticity height, easy to operate, in addition more more convenient than the operation normal-pressure boiler, the stoker personnel there is not specific (special) requirements.

Be the safety meter, this boiler also can adopt the water seal barrel structure, both can equalizing pressure, can enter by air-isolation again, and play the effect of corroding of preventing.

This vacuum Verital coal-fired boiler has following advantage:

1. improved boiler thermal output, energy-saving effect is remarkable. Because whole pot Shanghai adopts heat pipe to change Right principle especially such as a large-scale heat pipe, and adopts the heat pipe-type afterheat recycling water tank, can make boiler Exhaust gas temperature is reduced to 120-130 ℃, and the thermal efficiency improves 4-5%.

2. the boiler non flouling behaviour has solved a great problem on the present boiler technology, and is especially little The fouling difficult problem of used Double water-cooled fire grate on the type vertical boiler, and burn out problem, avoided by The thermal efficiency that causes in fouling descends. Make boiler thermal output be able to long-term stability, furnace life prolongs greatly Long.

3. water treatment facilities and corresponding investment have been saved.

4. boiler safety function admirable.Because boiler is in small negative pressure state, near normal-pressure boiler, the incident of can not blasting.

5. the boiler body pressurized is very little, and each wall thickness all can reduce, and is simple in structure, and the metal material consumption greatly reduces, and used stratiform helix tube condenser metal consumption is also very few.

6. manufacturing process is simple.Manufacturing requires general normal-pressure boiler and steam boiler is lower, save human and material resources and electric power.

7. multi-use.Hot water and boiling water can be provided simultaneously.

Claims (4)

1, vacuum vertical fire coal boiler, comprise drum (1), inner bag combustion chamber (2), water-cooled grate (3), lower fire grating (5), upper furnace door (7), lower furnace door (6) and smoke pipe (9), it is characterized in that inner bag combustion chamber (2) is in vertical drum (1) bottom, play water in the heating drum; In the vaporium (10) on drum (1) top, be provided with trumpet cooler (18), be used to heat the extraneous cold water that feeds; The vaporium (10) of sealing joins with a vavuum pump, forms the vacuum and steam chamber, to regulate negative pressure and the temperature in the drum when boiler is worked, absorbs heat the huge heat pipe of top heat release thereby make whole vertical drum become a bottom.

2, boiler as claimed in claim 1 is characterized in that side, said inner bag combustion chamber (2) is provided with boiled water tank (4), and the heat absorbing end of heat pipe heat (41) is in the inner bag combustion chamber (2), and release end of heat is in the boiled water tank (4).

3, boiler as claimed in claim 1, it is characterized in that said smoke pipe (9) is provided with heat pipe-type waste-heated water-tank (13), smoke pipe (9) passes water tank, between smoke pipe and water tank, form ring-shaped water jacket (14), the heat absorbing end of heat pipe heat (15) is in the smoke pipe (9), and release end of heat is in the water jacket (14).

4, boiler as claimed in claim 1 is characterized in that said trumpet cooler (18) is the stratiform spiral cold-finger, is divided into 2～4 groups, can supply the hot water of different places or different purposes respectively.

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