CN201837223U - Regenerative combustion type aluminum melting furnace - Google Patents
Regenerative combustion type aluminum melting furnace Download PDFInfo
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- CN201837223U CN201837223U CN2010202862151U CN201020286215U CN201837223U CN 201837223 U CN201837223 U CN 201837223U CN 2010202862151 U CN2010202862151 U CN 2010202862151U CN 201020286215 U CN201020286215 U CN 201020286215U CN 201837223 U CN201837223 U CN 201837223U
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- heat
- house steward
- accumulating burner
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Abstract
The utility model provides a regenerative combustion type aluminum melting furnace. The furnace comprises a furnace body, a regenerative burner nozzle, a three-way reversing valve, a control device, an air supply main pipe, a smoke exhaust main pipe and a fuel gas main pipe; a fuel gas passage, an air passage, and a smoke gas passage which are communicated inside and outside are arranged on the regenerative burner nozzle of the furnace body and respectively connected with the three-way reversing valve, the air supply main pipe, the smoke exhaust main pipe and the fuel gas main pipe which are arranged outside the furnace body; a premixing space is arranged at the inner ends of the fuel gas passage and the air passage of the regenerative burner nozzle; through the adoption of the regenerative burner nozzle, air and fuel gas can be better mixed and combusted; one interface of the burner nozzle is connected with the fuel gas passage, and the other interface of the burner nozzle is connected with the air supply main pipe and the smoke exhaust main pipe through the three-way reversing valve; and a quick switching valve is connected in series between the outer end of the fuel gas passage and the fuel gas main pipe.
Description
Technical field
The utility model relates to a kind of molten aluminium stove, relates to the molten aluminium stove of a kind of heat-accumulation combustion formula specifically.It is mainly used in the fusing of fine aluminium ingot, aluminium alloy ingots, secondary aluminium etc., also may extend to the fusing of the non-ferrous metal similar with the aluminium physical property such as metallic zinc and alloy thereof.
Background technology
Traditional molten aluminium stove adopts following combustion system: air directly and after the combustion gas blending sprays into the burner hearth internal combustion without accumulation of heat (or preheating) in burner.Its flame forms bigger thermograde easily, causes temperature field in furnace inhomogeneous, and the flame temperature that provides is on the low side, and burn-off rate is slow partially.In addition, high-temperature flue gas is taken away a large amount of waste heats through directly discharging after the flue limited cooling, and some unburnt harmful substances are wherein also arranged, the consequence that causes not only contaminated environment but also waste energy.Thereby the production run of this molten aluminium stove certainly exists the shortcoming of not environmental protection of high energy consumption poor efficiency.
Summary of the invention
The purpose of this utility model just provides the molten aluminium stove of a kind of heat-accumulation combustion formula, its can solve high energy consumption that prior art exists, poor efficiency, not environmental protection problem.
The purpose of this utility model realizes by following technical proposals, the molten aluminium stove of heat-accumulation combustion formula provided by the utility model comprises body of heater, the air feed house steward, the smoke evacuation house steward, the combustion gas house steward, control device, three-way diverter valve and heat-accumulating burner, the blast tube that is interlinked to the outside on the body of heater heat-accumulating burner, being provided with, air duct and exhaust gases passes and respectively with the outer three-way diverter valve of body of heater, the air feed house steward, smoke evacuation house steward and gas burning system connect, be provided with the premix space at the blast tube of described heat-accumulating burner and the inner of air duct, heat-accumulating burner can make air and the better blending burning of combustion gas, an interface of heat-accumulating burner is connected with the outer end of described blast tube, and another interface of heat-accumulating burner is connected with the smoke evacuation house steward with described air feed house steward by three-way diverter valve; Connect between blast tube outer end and the combustion gas house steward and one cut valve soon.
In the both sides of body of heater or a side many groups or one group of heat-accumulating burner and air duct and connected valve and the three-way diverter valve cut soon respectively are set.
Described heat-accumulating burner is by housing and place the accumulation of heat bead in it to constitute, and the liner of housing is for watering material feeding and fiberboard, at the top of housing with the side is respectively equipped with the bead filler and bead unloads outlet.
Described three-way diverter valve and cut valve soon and be pneumatic operated valve is by air cylinder driven.
The molten aluminium stove of this heat-accumulation combustion formula also comprises control device, comprise temperature sensor, pressure sensor, flow sensor, various control valve, PLC system, temperature sensor, pressure sensor, flow sensor are connected with the respective input of PLC, the PLC system is used for the detection of the molten various live signals of aluminium stove (temperature, pressure, flow etc.), and the aperture of the various control valves of output control; The action that the PLC system is used to control three-way diverter valve and cut valve soon is to realize reversing combustion; Temperature sensor is located at interior, the furnace roof of connecting pipe of smoke evacuation house steward, heat-accumulating burner respectively, is used to detect exhaust gas temperature and furnace temperature; Pressure sensor is located at air duct, gas pipeline and furnace roof, is used to detect air pressure, gaseous-pressure, furnace pressure; Various control valves are located at air duct, gas pipeline and smoke discharging pipe respectively, are used to regulate air, combustion gas and smoke evacuation flow; The PLC system in time adjusts sky, gas flow according to manufacturing technique requirent, and parameters such as exhaust valve aperture realize the operated from a distanceization and the high efficiency of stove operation.
The utility model takes burn side smoke evacuation, both sides of a side to replace the mode of reversing combustion/smoke evacuation, thereby guarantee that burner hearth is in the state that continous-stable burns on the whole.On the one hand by the PLC system control three-way diverter valve, soon cut valve action and and then realize reversing combustion, detect furnace temperature, furnace pressure, exhaust gas temperature by PLC system and each sensor on the other hand, and in time adjust sky, gas flow according to manufacturing technique requirent, parameters such as exhaust valve aperture realize the operated from a distance high efficiency that stove is produced.
When the stove exhaust gas temperature exceeds standard, the PLC system can report to the police automatically and also accelerate commutating frequency to reduce exhaust gas temperature; When three-way diverter valve and cut valve soon and break down, the PLC system can report to the police and inform trouble point and failure cause automatically, can reset after taking measures to remove fault to recover the normal commutation state.The PLC system can report to the police and take corresponding effective measures to guarantee the security of stove production process automatically when unusual when air/fuel gas or compressed air pressure occur.
Three-way diverter valve takes pneumatic two-bit triplet magnetic valve to promote (or rotation) cylinder action to realize the conversion of air feed state and smoke evacuation state.Cutting valve soon also takes pneumatic two-bit triplet magnetic valve to promote (or rotation) cylinder to realize the on off operating mode of combustion gas.
The utlity model has following advantage:
1, production is high-effect: temperature is near furnace temperature behind the cold air process heat-accumulating burner, with fully burning fast after the combustion gas mixing that enters in the stove, the burner hearth quick heating, the fire box temperature field is even, the high temperature section operational effect is better, improve the heat providing capability greatly, shorten heating cycle, improved the fusing prouctiveness.
2, aluminium liquid is high-quality: because the high efficiency of burning can reduce wind supply quantity as much as possible, reduce the oxidization burning loss of non-ferrous metal, the uniformity of temperature field in furnace has also been guaranteed the whole machine balancing uniformity of raw material heating, thereby has improved the quality of melting aluminum liquid.
3, energy low consumption: high-temperature flue gas is passed to cold air by heat-accumulating burner with most heats, has significantly reduced heat loss due to exhaust gas; And, reduce excess air loss on heating because the high efficiency of burning can reduce excess air coefficient as much as possible; When reducing all kinds of heat loss, just improve furnace thermal efficiency, improved flame temperature, greatly reduced amount of consumed gas equally.
4, handling safety intellectuality: can carry out remote real-time monitoring very intuitively by control device to stove production process and every operational factor, break down and to report to the police and emergency processing is done in some accident.Strengthen efficient administration like this, saved human resources, ensured production security.
Below just relevant technology contents of the present utility model and detailed description, existing conjunction with figs. and given embodiment describe as follows.
Description of drawings
Fig. 1 is the positive general structure cross-sectional schematic of the utility model embodiment;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is left view or the right view of Fig. 1;
Fig. 4 is the working state schematic representation of the inboard burning of the utility model, outside smoke evacuation;
Fig. 5 is the working state schematic representation of the burning of the utility model outside, inboard smoke evacuation;
Fig. 6 a is the structure smoke evacuation view of the utility model three-way diverter valve embodiment;
Fig. 6 b is the structure air intake fired state schematic diagram of the utility model three-way diverter valve embodiment;
Fig. 7 a is the structural representation that the utility model is cut valve embodiment conducting state soon;
Fig. 7 b is the structural representation that the utility model is cut valve embodiment closed condition soon;
Total system pie graph when Fig. 8 is the utility model application;
Fig. 9 is the formation schematic diagram of control device of the present utility model.
The specific embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 7, shown in the drawings is an embodiment of the molten aluminium stove of heat-accumulation combustion formula of the present utility model, it comprises body of heater 7, air feed house steward 4, heat-accumulating burner 1, smoke evacuation house steward 5 and blast tube 6, side at body of heater 7 is provided with two heat-accumulating burners 1, is provided with the premix space at the inboard spout of heat-accumulating burner 1.An interface of heat-accumulating burner 1 is connected with described blast tube 6, and another interface of heat-accumulating burner 1 is connected with smoke evacuation house steward 5 with described air feed house steward 4 by three-way diverter valve 2; Between described blast tube 6 and combustion gas house steward 5, connect and one cut valve 3 soon.Cut valve 3 and three-way diverter valve 2 soon by air cylinder driven (not shown go out), and be connected with compressed air piping by the gas circuit control device.
Referring to attached Figure 4 and 5, a large amount of beads are equipped with in heat-accumulating burner 1 inside, and liner is for watering material feeding and fiberboard.Bead filler 14 is arranged at the top, and the side has bead to unload outlet 15, can clear up and change bead easily.The specific area of bead can reach 250m
2/ m
3Numerous beads is divided into very little gas channel with air-flow, when gas flows through, form strong turbulent region, the coefficient of heat transfer is strengthened greatly, sphere diameter is little in addition, density is big, specific heat capacity is big, and thermal conductivity factor is big, makes bead can absorb (chance high-temperature flue gas) or discharge (when meeting cold air) a large amount of heats in the short commutation cycle (approximately 1-2 minute).In general, only differ about 100 ℃ through hot air temperature and chamber flue gas temperature behind the heat-accumulating burner 1, temperature efficiency is up to more than 85%; Can reduce to below 150 ℃ through the exhaust gas temperature behind the heat-accumulating burner 1.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, heat-accumulating burner 1 of the present utility model, three-way diverter valve 2 and cut the three big key elements of valve 3 threes with burner hearth burning soon: combustion gas, air, smoke evacuation organically integrate, can provide manual or the operation of Long-distance Control harmonious orderly ground, realize the alternately function of reversing combustion of two heat-accumulating burners of stove 1, (as Fig. 4, shown in Figure 5) is so alternately reciprocal, thereby has guaranteed the steady and continuous operation of stove integral body.
Referring to Fig. 1 and 6a and 6b, the three-way diverter valve 2 that the utility model uses adopts our company's patented product, and (patent No. is: 200420003593.9), it comprises shell 21, valve plate 22 and axostylus axostyle 23, shell 21 is provided with three interfaces 24,25,26, respectively for connecing air duct, flue and burner outlet, one side of valve plate 22 is connected axostylus axostyle 23, and axostylus axostyle 23 sealings are moved and passed shell 21, and are connected with the driving mechanism cylinder.Can realize frequently and apace commutating, the realization switching motion is finished in 2～3 seconds, can realize the commutation cycle up to 120 times in one hour.Its compact conformation, stable working is reliable, safeguards simple and convenient.
Referring to Fig. 7 a and 7b, it cuts the product that valve 3 also adopts our company's development soon, and it is made of shell 31, valve seat 32 flaps 33 and valve rod 34, and driving mechanism is a cylinder 35.During work and three-way diverter valve interlock, realize frequently and apace break-make of combustion gas.It has compact conformation equally, and stable working is reliable, safeguards advantage simply and easily.
Employed three-way diverter valve 2 of the present utility model and the action of cutting valve 3 soon can be passed through manual reverse of direction (switching), also can adopt the control mode of timing automatic commutation (switching), and Fig. 8 is that the formation of the utility model automaton is always schemed.
Referring to Fig. 8, three-way diverter valve 2 of the present utility model reaches the action of cutting valve 3 soon and is controlled by PLC system 14, and overtemperature alarm is also adjusted a series of functions such as commutating period automatically.Same heat-accumulating burner 1 always closes combustion gas earlier and cuts valve 3 soon being gone to smoke evacuation state moment by fired state, again three-way diverter valve 2 is switched to the smoke evacuation state.Always earlier three-way diverter valve 2 is switched to the air feed state going to fired state moment by the smoke evacuation state on the contrary, open combustion gas again and cut valve 3 soon.It is wrong to occur certain valve event in commutation process, and its system can cut valve 3 soon with combustion gas immediately and place closed condition, and three-way diverter valve 2 places the air feed state, takes place to prevent the gas leakage accident.
Referring to Fig. 8 and Fig. 9, the signal processing function of PLC of the present utility model system 14:
1) PLC system 14 finishes the collection to various supplemental characteristics in the production process, and the conversion of input/output signal is handled, and shows record, accumulation, computing, chain warning, functions such as circuit controls.Signal comprises: three-way diverter valve 2 (stove outer) and cut the timely state of valve 3 (stove is outer) soon and control, fire box temperature (furnace roof), furnace pressure (furnace roof), gaseous-pressure and adjusting (gas pipeline), gas flow and adjusting (gas pipeline), air mass flow and adjusting (air duct), air pressure (air duct), exhaust gas temperature and adjusting (smoke discharging pipe), bleed pressure (on the compressed air piping).
2) mode that adopts CRT monitor 13 to show shows that each monitors the necessary various operations of control, monitoring image.
3) operating personnel pass through the overview panel to CRT monitor 13, the flow process picture, and trend record is reported to the police, and the observation analysis of pictures such as operation uses operator's keyboard special and mouse to operate.
4) can carry out class's newspaper by printer 15, daily paper is printed, for production management provides reliable data.
Claims (5)
1. a heat-accumulation combustion formula melts the aluminium stove, it comprises body of heater, heat-accumulating burner, three-way diverter valve, control device, the air feed house steward, smoke evacuation house steward and combustion gas house steward, the blast tube that is interlinked to the outside on the body of heater heat-accumulating burner, being provided with, air duct and exhaust gases passes and respectively with the outer three-way diverter valve of body of heater, the air feed house steward, smoke evacuation house steward and combustion gas house steward connect, be provided with the premix space at the blast tube of described heat-accumulating burner and the inner of air duct, it is characterized in that: this heat-accumulating burner can make air and the better blending burning of combustion gas, an interface of heat-accumulating burner is connected with described blast tube, and another interface of heat-accumulating burner is connected with the smoke evacuation house steward with described air feed house steward by three-way diverter valve; Connect between described blast tube outer end and the combustion gas house steward and one cut valve soon.
2. heat-accumulation combustion formula according to claim 1 melts the aluminium stove, it is characterized in that: in the both sides of body of heater or a side many groups or one group of heat-accumulating burner and air duct and connected blast tube respectively are set, cut valve and three-way diverter valve soon.
3. heat-accumulation combustion formula according to claim 1 melts the aluminium stove, it is characterized in that: described heat-accumulating burner is by housing and place the accumulation of heat bead in it to constitute, the liner of housing is for watering material feeding and fiberboard, at the top of housing with the side is respectively equipped with the bead filler and bead unloads outlet.
4. according to the molten aluminium stove of claim 1 or 2 or 3 described heat-accumulation combustion formulas, it is characterized in that: described three-way diverter valve and cut valve soon and be pneumatic operated valve, pass through air cylinder driven.
5. according to claim 1 or the molten aluminium stove of 2 or 3 described heat-accumulation combustion formulas, it is characterized in that: described control device comprises temperature sensor, pressure sensor, flow sensor, various control valve, PLC system, and temperature sensor, pressure sensor, flow sensor are connected with the respective input of PLC system; Temperature sensor is located at interior, the furnace roof of connecting pipe of smoke evacuation house steward, heat-accumulating burner respectively; Pressure sensor is located at air duct, gas pipeline and furnace roof; Various control valves are located at air duct, gas pipeline and smoke discharging pipe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202862151U CN201837223U (en) | 2010-08-09 | 2010-08-09 | Regenerative combustion type aluminum melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202862151U CN201837223U (en) | 2010-08-09 | 2010-08-09 | Regenerative combustion type aluminum melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201837223U true CN201837223U (en) | 2011-05-18 |
Family
ID=44007334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202862151U Expired - Fee Related CN201837223U (en) | 2010-08-09 | 2010-08-09 | Regenerative combustion type aluminum melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201837223U (en) |
-
2010
- 2010-08-09 CN CN2010202862151U patent/CN201837223U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20180809 |