CN2757017Y - High energy saving radiation type single tubular boiler - Google Patents

Abstract

The utility model relates to a high energy-saving radiation type single-barrel boiler which belongs to the manufacturing technique of boilers. In order to fully and scientifically utilize the strong coal saving potentiality--main fire radiation force, coal saving and boiler coal consumption reduction, in a hearth, the utility model provides the high energy-saving radiation type single-barrel boiler which is composed of a boiler barrel, a lower container, a partition board, a main fire heating water pipe, a water return pipe, an insulation layer, a primary air opening, a water pipe and a flue pipe, wherein the main fire heating water pipe is installed in a main fire heated zone in a furnace. The boiler barrel in which the partition board, the water pipe and the flue pipe are horizontally arranged is arranged in a thermal-insulating layer above the hearth, and the bottom of the boiler barrel is connected with the lower container through the main fire heating water pipe and the water return pipe. The primary air opening is installed horizontally on the left lower side of a thermal-insulating boiler wall, and the lower container is installed on both sides of a grate. The high energy-saving radiation type single-barrel boiler is used for heating, and has the advantages of simple structure, coal saving, high heat utilization ratio, lower discharge flue temperature and no air pollution.

Description

High energy-conservation radiant type monotubular boiler

Technical field: the utility model relates to a kind of high energy-conservation radiant type monotubular boiler, belongs to boiler manufacturing technology field.

Background technology: along with the develop rapidly of science and technology, boiler also is the same, and everyway is developing to automation, modernized direction, problem, pollution problems that the steam coal amount is excessive, waste is serious, also thoroughly do not solve, coal is limited, is unlimited with coal; Our country is in the world with the maximum country of coal, and about about 1,500,000,000 tons, Industrial Boiler is to use the coal rich and influential family to annual coal consumption greatly, and annual coal consumption is about 600,000,000 tons; Boiler is in the middle of constantly development, progress, also developing aspect energy-conservation step by step, such as the appearance of water-cooling wall, the use of superheater and economizer, new energy-conservation way had appearred again in recent years, as even laminating combustion technology, energy-saving insulating technique etc., the way that these are good, all played energy-conservation effect with coal, but great majority are all worked hard at the less important position of boiler, and in the burner hearth of the most important position of boiler, but change too little, have only water-cooling wall or flue, water-cooled grate etc. also occurred; Present boiler is to belong to not energy-conservation, inferior fiery formula to absorb heat, with convection heating surface is main heating surface, radiation heating-surface very little, never more water pipe is as topmost radiation heating-surface, this is because do not advocate in boiler circle and the book or oppose to establish too much design water pipe in burner hearth, think that like that not only not saving coal can waste a lot of coals on the contrary, it seems that now this saying is unscientific, this is the main cause that coal saving is not for these years got off; In addition, economize on coal and air inducing also has very big relation, present boiler all uses powerful type air-introduced machine, and the problem of appearance is also very serious, has occurred a large amount of charcoal ash rain around chimney, pyrotechnics not wait in boiler to be digested and assimilated, just taken out of outside the stove forcibly fast, formed charcoal ash rain, so not only wasted coal, also serious pollution environment, powerful type air-introduced machine also takes electricity, volume is big.

Summary of the invention: on the basis of existing boiler structure, for fully, scientifically utilize the inner powerful fiery radiant force of potentiality-master of economizing on coal that exists of burner hearth, be sparing in the use of coal, make the coal consumption of boiler reach floor level, and research and design high energy-conservation radiant type monotubular boiler, the utility model is by drum, the next part case, dividing plate, main fire is subjected to hot-water line, return pipe, heat-insulation layer, primary air nozzle, water pipe, smoke pipe is formed, main fire is installed in the interior fiery heat affected zone of master of burner hearth by hot-water line, in the heat-insulation layer above burner hearth drum is installed, be horizontally installed with dividing plate in it, water pipe and smoke pipe, its below is connected by hot-water line and return pipe with the next part case through main fire, the primary air nozzle level is installed in the lower-left side of heat insulation furnace wall, and the next part case is installed in the both sides of grate;

The beneficial effects of the utility model, advantage and characteristics:

1, solved in burner hearth main fiery heat affected zone and can establish the problem that too much main fire is subjected to hot-water line, boiler renovation is easy, and is simple in structure, and result of use is good;

2, air is a kind of energy of using not to the utmost, coal is when burning, if air is supplied with sufficient, coal becomes carbon dioxide can emit 8000 kilocalories/kilogram heat with the oxidation symphysis, if air undersupply, can only to generate carbon monoxide, emit 2500 kilocalories/kilogram heat, in order to be sparing in the use of coal, will supply with enough air to boiler, heat in the coal could all radiate like this, and the utility model uses light-duty air-introduced machine, and it is sufficient that air is supplied with, the negative pressure adjustment is reasonable in the burner hearth, coal is fully burnt, and the heat in the coal can all radiate out, and the flue dust of discharge is free from environmental pollution;

3, heat in the coal all radiation has come out, can be its whole absorption, it is the key issue that is sparing in the use of coal, key is radiation heating-surface how much, in boiler furnace, coal is intimately fierce more when burning, the radiation heat release is powerful more, at convection heating surface, flue-gas temperature is lower, the radiation heat release sharply descends, when fire box temperature is higher than 1200 when spending, strong many of heat are banished in radiation heat release comparison, the effect of radiant heat transfer is directly proportional with the biquadratic of heat source temperature, radiation heating-surface absorbs heat and absorbs the heat raising more than 5 times than the convection current heating surface, that is to say: coal is released about 85% of net quantity of heat and is finished in burner hearth when burning, heat about 15% is finished at convection heating surface, but absorbing whole radiations heat energies by water-cooling wall entirely can not be completed, because of radiation heating-surface too little, can only absorb about 25% of whole radiations heat energies, most heat becomes high-temperature flue gas and enters convection heating surface and discharged from chimney then, and this is the most important reason of boiler waste coal, also is the too high reason of boiler tail flue gas temperature; The various coal-burning boilers of present national usefulness, great majority all are to belong to time intensity of a fire to absorb calorimetry, are main heating surface with convection heating surface, and the boiler of this pattern is the expense coal burning boiler; The design has overcome above-mentioned shortcoming, in burner hearth, reasonably be covered with main fire and be subjected to hot-water line, become the topmost absorbing surface of radiation heating-surface, made coal the time release 85% of net quantity of heat and absorbed by hot-water line by main fire in burning, can improve water temperature rapidly, the thermal efficiency height of boiler;

4, radiant-type boiler more than 60%, makes the steam coal amount reach reduced levels than convection type saving coals from boiler, and ature of coal is good more economizes on coal manyly more, and the utilization rate of coal can reach more than 90%;

Description of drawings:

Accompanying drawing is the utility model internal structure front view.

Among the figure: 1. drum, 2. next part case, 3. dividing plate, 4. main fire is subjected to hot-water line, 5. return pipe, 6. heat-insulation layer, 7. primary air nozzle, 8. water pipe, 9. smoke pipe is 10. led fiery heat affected zone.

The specific embodiment:

As shown in drawings: high energy-conservation radiant type monotubular boiler is formed by hot-water line 4, return pipe 5, heat-insulation layer 6, primary air nozzle 7, water pipe 8, smoke pipe 9 by drum 1, next part case 2, dividing plate 3, main fire, main fire is installed in the interior fiery heat affected zone 10 of master of burner hearth by hot-water line 4, in the heat-insulation layer 6 above burner hearth drum 1 is installed, be horizontally installed with dividing plate 3, water pipe 8 and smoke pipe 9 in it, its below is connected by hot-water line 4 and return pipe 5 with next part case 2 through main fire, primary air nozzle 7 levels are installed in the lower-left side of heat insulation furnace wall, and next part case 2 is installed in the both sides of grate; After the grate upper coal feeding is lighted, main fire in the middle of the boiler operatiopn in the main fiery heat affected zone 10, grate top is subjected to hot-water line 4, become the topmost absorbing surface of radiation heating-surface, making coal the time release 85% of net quantity of heat in burning absorbed by hot-water line 4 by main fire, can improve water temperature rapidly, make the thermal efficiency height of boiler, the structure in the drum 1 can guarantee that the fume afterheat that is about to be discharged from is absorbed by water pipe 8; The utility model uses light-duty air-introduced machine, and it is sufficient that air is supplied with, and the interior negative pressure adjustment of burner hearth is reasonable, and coal is fully burnt, and the heat in the coal can all radiate out, and the flue dust of discharge is the contaminated air environment not.

Claims (1)

1, a kind of high energy-conservation radiant type monotubular boiler, by drum (1), next part case (2), dividing plate (3), main fire is subjected to hot-water line (4), return pipe (5), heat-insulation layer (6), primary air nozzle (7), water pipe (8) and smoke pipe (9) are formed, it is characterized in that: main fire is installed in the interior fiery heat affected zone of master (10) of burner hearth by hot-water line (4), drum (1) is installed in the heat-insulation layer above burner hearth (6), be horizontally installed with dividing plate (3) in it, water pipe (8) and smoke pipe (9), its below is connected by hot-water line (4) and return pipe (5) with next part case (2) through main fire, primary air nozzle (7) level is installed in the lower-left side of heat insulation furnace wall, and next part case (2) is installed in the both sides of grate.

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