CN2381901Y

CN2381901Y - Heat accumulating burner

Info

Publication number: CN2381901Y
Application number: CN99229108U
Authority: CN
Inventors: 周文惠
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-09
Filing date: 1999-08-09
Publication date: 2000-06-07
Anticipated expiration: 2009-08-09

Abstract

The utility model relates to a heat accumulating burner which is used for the burning of an industrial furnace, belonging to a burning appliance. The utility model is characterized in that the burner spouts 1 of the heat accumulating burners 13 and 13 are inserted in a furnace body wall 16; wind boxes 6 of the heat accumulating burners are connected with a four-way valve 8 through wind pipes 17. A device which can be alternatively used for heat exchange and heat accumulation to the air and the flue gas is composed of the two sets of identical heat accumulating burners and the four-way change valve. The utility model has the advantages of small size, compact structure, and convenient field installation.

Description

Heat accumulating burner capable

A kind of heat accumulating burner capable is used for the burning of industrial furnace, belongs to combustion apparatus.

At present, the domestic existing full-automatic recovery type industrial furnace of a kind of waste heat (ZL92238591.2), it is equipped with opposed commutation type burner on body of heater, heat-exchanging chamber that communicates with body of heater and the air-supply that communicates with heat-exchanging chamber or fuel and induced pipe system form, switch air feed and smoke evacuation by two-position five-way valve, make two Heat Rooms replace accumulation of heat and heat release.The disadvantages of background technology part is: 1, body of heater and heat-exchanging chamber are one, and a stove is only adorned a pair of heat-accumulation combustion device, are unfavorable for uniform distribution of temperature in the stove; 2, dismounting, installation difficulty; 3, two-position five-way valve can produce the gas circuit intercommunication when commutation, makes gas produce string mutually, can make coal gas enter flue gas when to coal gas and flue gas commutation, produces explosion phenomenon.

The purpose of this utility model is to avoid the weak point of above-mentioned background technology and a kind of heat accumulating burner capable is provided, with two groups can dismantle, identical heat-storage type burner and four-way change-over valve form one with air, flue gas can heat exchange, the device that is used alternatingly of accumulation of heat, two devices are taken turns to commutate and are used, when absorbing the flue gas heat accumulation of heat for one, another is emitted the heat of heat storage and adds hot-air (or coal gas).

The purpose of this utility model can reach by following measure: heat-storage type burner 13,13 ' burner spout 1 insert furnace body wall 16, the bellows 6 of heat-storage type burner are connected with cross valve 8 by airduct 17.

Fig. 1 is the heat accumulating burner capable layout drawing, Fig. 2 is a heat-storage type burner, heat-storage type burner is made up of burner spout 1, Fuel lance 2, dirt pocket 3, high-temperature heat accumulation body 4, low-temperature heat accumulating body 5, bellows 6, burner spout 1 is connected with dirt pocket 3, high-temperature heat accumulation body 4 ends are connected with dirt pocket, the afterbody of high-temperature heat accumulation body 4 is connected with low-temperature heat accumulating body 5, and low-temperature heat accumulating body 5 is connected with bellows 6.When high-temperature flue gas through out-of-date, earlier through dirt pocket, the dust in the flue gas is because the downward sedimentation of high speed inertia is gathered the back and removed by ash discharging hole, and flue gas is through the high-temperature heat accumulation body, and high-temperature heat accumulation body 4 is thin-walled hole bricks of being made by refractory material, wall thickness is 0.5～5mm.Heat storage can be an overall structure, also can be that polylith tiles and forms, and can closely lean on together along between each piece of airflow direction, also can leave certain interval.Material can be carborundum, silicon nitride, high alumina, clay, cordierite etc.Flue gas passes through the low-temperature heat accumulating body again, and the low-temperature heat accumulating body is latticed or paliform, and material is metal materials such as straight carbon steel, heat resisting steel, copper, aluminium, cast iron.Flue gas can gather enough heats, thereby make the flue gas self-temperature reduce to very low (being generally 50～200 ℃) by high temperature, two kinds of heat storages of low temperature, and the flue gas after the cooling, is discharged by blower unit through exhanst gas outlet to cross valve by bellows.If flue gas dust is less, can not accumulate in the heat storage influences the accumulation of heat effect, and dirt pocket can be set, and flue gas directly can be fed the high-temperature heat accumulation body, and as shown in Figure 3, Fig. 3 is the heat-storage type burner of no dirt pocket.

Fig. 4 is the cross valve structure chart, and Fig. 5 is Fig. 4 A-A profile.Cross valve 8 is made up of axle 9, valve body 10, spool 11, and through hole is arranged on the spool.Cross valve is cast steel, ironcasting or weldment, valve body 10 has A, B, 4 ports of C, D, spool 11 has two passages, see by Fig. 4, cross valve A, B two air ports are communicated with, and D, C two smoke entrances are communicated with, behind the spool half-twist, cross valve A, D air ports communicate, and B, C smoke entrance communicate.Seal 12 is arranged around the through hole of valve body 10, can not go here and there mutually to guarantee air, flue gas, the seal material can be copper, aluminium, rubber, asbestos etc.

Cross valve is according to required time interval of ventilation, controls the motion of spool by transmission device by axle 9, and spool can move reciprocatingly, and also can be one-way movement (each half-twist, direction of rotation is constant).Every rotation once, the import and export evolution of the air that is connected with regenerator, flue gas once, other two ports of cross valve, one immobilizes for exhanst gas outlet for air intlet, one.

The utility model is compared with background technology, and its advantage is:

1, on a stove many group heat accumulating burner capables can be installed, guarantee that temperature is even in the stove;

2, volume is little, and compact conformation is on-the-spot easy for installation;

3, can not produce gas during the reversal valve commutation and go here and there mutually, avoid explosion phenomenon to take place.

Fig. 1, heat accumulating burner capable layout drawing

Fig. 2, heat-storage type burner

The heat-storage type burner structure chart of Fig. 3, no dirt pocket

Fig. 4, cross valve structure chart

The A-A profile of Fig. 5, Fig. 4

Fig. 6, coal gas, the two pre-heated heat-accumulation combustion device schematic diagrames of air

Among the figure: 1, burner spout, 2, Fuel lance, 3, dirt pocket, 4, high-temperature heat accumulation body, 5, the low-temperature heat accumulating body, 6, bellows, 7, igniter burner, 8, cross valve, 9, axle, 10, valve body, 11, spool, 12, seal, 13,13 ', a pair of heat-storage type burner, 14,14 ', air, exhaust gases passes, 15,15 ' flue gas, gas passage, 16, body of heater, 17, airduct.

Below in conjunction with most preferred embodiment and accompanying drawing the utility model is further set forth:

1, with the fuel oil heating be example:

When cross valve was positioned at as Fig. 4 state, A, B air ports communicated, and D, C smoke entrance communicate.Air A mouth enters, from the B mouth feed heat-storage type burner 13 ' bellows 6, air through low-temperature heat accumulating body, high-temperature heat accumulation body after preheating, at last from spout 1 ' ejection, fuel is by Fuel lance 2 ' ejection, with the air burning formation flame of high temperature preheating simultaneously; D, C smoke entrance communicate, and flue gas enters from the spout of heat-storage type burner 13, and to bellows, flue gas enters reversal valve through bellows by the D mouth through dirt pocket, high-temperature heat accumulation body, low-temperature heat accumulating body, are extracted out by blower unit through the C mouth, and the flue gas discharge temperature is 200 ℃.Igniter 7 is equipped with at the place at the burner spout, guarantees that the burner after the commutation can smooth ignition.

After burning 20 seconds, the four-way change-over valve half-twist, A, D mouth communicate at this moment, B, C mouth communicate, and air enters reversal valve by the A mouth, enter heat-storage type burner 13 through the D mouth, low-temperature heat accumulating body, the high-temperature heat accumulation body of air process heat-storage type burner 13 sprays from spout 1 after being preheated to high temperature, close simultaneously heat-storage type burner 13 ' spray gun 2 ', open the spray gun 2 of heat-storage type burner 13, the closing or open of spray gun passed through solenoid control.Burning forms flame to fuel at spout 1 place, flue gas then by heat-storage type burner 13 ' spout 1 ' enter, behind dirt pocket, high-temperature heat accumulation body, low-temperature heat accumulating body, flue-gas temperature is reduced to 200 ℃, flue gas is discharged by blower unit through the C mouth through bellows 6 ' enter reversal valve by the B mouth.

A pair of heat-storage type burner (13,13 ') changes air and flow of flue gas direction by reversal valve control, presses certain hour constantly commutation work at interval, and smoke exhaust heat is fully reclaimed.

The rotation commutation of cross valve also can be according to the flue-gas temperature control in low-temperature heat accumulating body exit, and i.e. rotation commutated after promptly flue-gas temperature was lower than predetermined value.

When 2, being fuel with coal gas, air and coal gas all should carry out preheating, see Fig. 6.

Fig. 6 is the two pre-heated heat-accumulation combustion device schematic diagrames of coal gas, air.

When combustion air when the B mouth of reversal valve enters heat-storage type burner, coal gas enters heat-storage type burner from the B ' mouth of reversal valve, air and coal gas through high low-temperature heat accumulating body heat absorption separately after, converge burning in the burner end; Flue gas enters in the another heat-storage type burner from exhanst gas outlet 14,15 respectively, flue gas heat is absorbed by heat storage respectively during through high low-temperature heat accumulating body, regenerator temperature raises, and enters reversal valve separately from D, D ' mouth respectively behind the flue gas cool-down to 200 ℃, from C, the discharge of C ' mouth.

After 20 seconds, the reversal valve of air, coal gas revolves simultaneously and turn 90 degrees, and air, coal gas change Way out, and D, the D ' mouth from reversal valve enters heat-storage type burner respectively, air and coal gas through low high-temperature heat accumulation body heat absorption separately after, converge burning in the burner end; And flue gas respectively from exhanst gas outlet 14 ', 15 ' enter in the another heat-storage type burner, during through separately high low-temperature heat accumulating body flue gas heat is passed to heat storage, the reversal valve that enters separately from B, B ' mouth respectively behind the flue gas cool-down to 200 ℃ is discharged from C, C ' mouth.

Through after 20 seconds, the reversal valve of air, coal gas revolves simultaneously and turn 90 degrees again, and air, coal gas change Way out once more, circulation and so forth, and flue gas heat is constantly absorbed by air, coal gas, and exhaust gas temperature keeps 200 ℃, and it is energy-conservation that stove is realized.

Claims

1, a kind of heat accumulating burner capable is characterized in that: heat-storage type burner 13,13 ' burner spout 1 insert furnace body wall 16, the bellows 6 of heat-storage type burner are connected with cross valve 8 by airduct 17.

2, heat accumulating burner capable according to claim 1, it is characterized in that: heat-storage type burner 13,13 ' form by burner spout 1, Fuel lance 2, dirt pocket 3, high-temperature heat accumulation body 4, low-temperature heat accumulating body 5, bellows 6, burner spout 1 is connected with dirt pocket 3, high-temperature heat accumulation body 4 ends are connected with dirt pocket, the afterbody of high-temperature heat accumulation body 4 is connected with low-temperature heat accumulating body 5, and low-temperature heat accumulating body 5 is connected with bellows 6.

3, heat accumulating burner capable according to claim 2 is characterized in that: high-temperature heat accumulation body 4 is thin-walled hole bricks of being made by refractory material, and wall thickness is 0.5～5mm.

4, heat accumulating burner capable according to claim 2 is characterized in that: low-temperature heat accumulating body 5 is latticed or paliform, and material is a metal material.

5, heat accumulating burner capable according to claim 1 is characterized in that: cross valve 8 is made up of axle 9, valve body 10, spool 11, and through hole is arranged on the spool.

6, heat accumulating burner capable according to claim 5 is characterized in that: seal 12 is arranged around the through hole of valve body 10.