CN2757018Y - High energy saving radiation type stereo boiler - Google Patents

Abstract

The utility model relates to a high energy-saving radiation type stereo boiler which is designed for fully and scientifically utilizing the heat of a main radiation zone in a boiler, saving coal and causing the coal use quantity to reach the lowest level. The high energy-saving radiation type stereo boiler is composed of a seal head, a boiler housing, a radiation heated pipe, a main radiation heated pipe, a U-shaped lower foot, a fire bar, an air outlet, boiler doors, a hearth and a flue outlet, wherein the seal head is fastened and sealed on the upper end of the boiler housing, and the U-shaped lower foot at the lower end of the boiler housing is positioned on a boiler seat; a heat main radiation region and a heat convection region in the hearth are alternately arranged respectively, and the main radiation heated pipe and the radiation heated pipe are arranged on the inner wall of the hearth, which is low in front and high in back. The top of the hearth is connected with the flue outlet, and the fire bar is installed on the boiler seat. The boiler doors are arranged among the U-shaped lower foot, the boiler housing and the hearth. The air outlet which uses a light draught fan to blow air is installed below the fire bar. The utility model is used for heating, and has advantages of simple structure, coal saving, high heat efficiency and no environment pollution.

Description

The three-dimensional boiler of high energy-conservation radiant type

Technical field: the utility model relates to the three-dimensional boiler of a kind of high energy-conservation radiant type, 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; And the structure more complicated of several vertical boilers is arranged, and the structure in the burner hearth is complicated more, and the thermal loss in pyrotechnics exit is big more; 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 vertical 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 the three-dimensional tranverse water tube boiler of high energy-conservation radiant type, the utility model is by end socket, shell, the radiation heat pipe, the primary radiation heat pipe, the U type is got a foothold, fire bars, air outlet, fire door, burner hearth and outlet flue are formed, end socket fastens, sealing is fixed on the upper end of shell, the U type of shell lower end is got a foothold and is located on the stove seat, hot primary radiation district and thermal convection current district in the burner hearth are staggered respectively, low early and high after primary radiation heat pipe and the radiation heat pipe of being equipped with is on inboard wall of burner hearth, the top of burner hearth connects with outlet flue, fire bars is installed on the stove seat, the U type is got a foothold, have fire door between shell and burner hearth, be installed in the below of fire bars with the air outlet of light-duty air-introduced machine air-supply, on shell, under outlet pipe and return pipe are installed; The three-dimensional boiler of high energy-conservation radiant type is used for heating.

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

1, solved in burner hearth main fiery radiation area and can establish the problem that too much primary radiation is subjected to hot-water line, boiler structure is simple, reequips easy to manufacturely, 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 the air undersupply can only 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, the heat in the coal could all radiate like this, and the utility model uses light-duty air-introduced machine, under fire bars, blow, it is sufficient that air is supplied with, and the interior negative pressure adjustment of burner hearth is reasonable, and coal is fully burnt, 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 primary radiation 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; It is that wrong row installs that primary radiation is subjected to hot-water line and radiation to be subjected to hot-water line, makes pyrotechnics flow process lengthening, more helps the absorption of heat energy, makes exhaust gas temperature low, and water pipe is low early and high after, and the water circulation is reliable;

4, the three-dimensional boiler of high energy-conservation radiant type more than 60%, makes the steam coal amount reach reduced levels than the three-dimensional saving coals from boiler of convection type, 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 schematic diagram.

Among the figure: 1. end socket, 2. shell, 3. radiation heat pipe, 4. primary radiation heat pipe, the 5.U type is got a foothold, 6. fire bars, 7. air outlet, 8. fire door, 9. burner hearth, 10. outlet flue.

The specific embodiment:

As shown in drawings: the three-dimensional boiler of high energy-conservation radiant type is by end socket 1, shell 2, radiation heat pipe 3, primary radiation heat pipe 4, the U type gets a foothold 5, fire bars 6, air outlet 7, fire door 8, burner hearth 9 and outlet flue 10 are formed, end socket 1 fastens, sealing is fixed on the upper end of shell 2, the U type leftover bits and pieces 5 of shell 2 lower ends is located on the stove seat, hot primary radiation district and thermal convection current district in the burner hearth 9 are staggered respectively, low early and high after primary radiation heat pipe 4 and the radiation heat pipe 3 of being equipped with is on burner hearth 9 inwalls, the top of burner hearth 9 connects with outlet flue 10, fire bars 6 is installed on the stove seat, the U type gets a foothold 5,9 in shell 2 and burner hearth have fire door 8, be installed in the below of fire bars 6 with the air outlet of light-duty air-introduced machine air-supply, on shell 2, under outlet pipe and return pipe are installed; After the grate upper coal feeding is lighted, primary radiation heat pipe 4 in the middle of the boiler operatiopn in the primary radiation heat affected zone, grate top, 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 primary radiation, can improve water temperature rapidly, make the thermal efficiency height of boiler, the waste heat in the three-dimensional boiler furnace 9 is absorbed by the radiation heat pipe 3 of top, structure of the present utility model can be guaranteed the flue gas cool-down that will discharge, not contaminated air; 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.

Claims (1)

1, the three-dimensional boiler of a kind of high energy-conservation radiant type, by end socket (1), shell (2), radiation heat pipe (3), primary radiation heat pipe (4), U type leftover bits and pieces (5), fire bars (6), air outlet (7), fire door (8), burner hearth (9) and outlet flue (10) are formed, it is characterized in that: end socket (1) fastens, sealing is fixed on the upper end of shell (2), the U type leftover bits and pieces (5) of shell (2) lower end is located on the stove seat, hot primary radiation district and thermal convection current district in the burner hearth (9) are staggered respectively, low early and high after primary radiation heat pipe (4) and the radiation heat pipe (3) of being equipped with is on burner hearth (9) inwall, the top of burner hearth (9) connects with outlet flue (10), fire bars (6) is installed on the stove seat, U type leftover bits and pieces (5), have fire door (8) between shell (2) and burner hearth (9), be installed in the below of fire bars (6) with the air outlet (7) of light-duty air-introduced machine air-supply, on shell (2), under outlet pipe and return pipe are installed.

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