CN104833227A - Thermal protection type coke oven waste heat recovery power generation system based on stabilized power supply circuit - Google Patents
Thermal protection type coke oven waste heat recovery power generation system based on stabilized power supply circuit Download PDFInfo
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- CN104833227A CN104833227A CN201510250932.6A CN201510250932A CN104833227A CN 104833227 A CN104833227 A CN 104833227A CN 201510250932 A CN201510250932 A CN 201510250932A CN 104833227 A CN104833227 A CN 104833227A
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Abstract
The invention discloses a thermal protection type coke oven waste heat recovery power generation system based on a stabilized power supply circuit. The system is mainly composed of a coke oven top large pit and oven top quarry tiles covering the surface of the top of the coke oven top large pit. A porose steel plate, a heat insulation plate layer and a porose steel plate are sequentially arranged in the coke oven top large pit from bottom to top. Heat preservation brick layers between the porose steel plates and the heat insulation plate layer are formed by filling the inner gaps inside the coke oven top large pit with heat-resisting sealing slurry. A heat exchanger and an evaporator which form a closed loop are arranged outside the coke oven top large pit. A waste heat power generation system is arranged on the evaporator. A waste heat control circuit is arranged in the waste heat power generation system. A control type power supply circuit, the stabilized power supply circuit and a control type output circuit which are connected in sequence and a thermal induction automatic switching circuit are arranged in the waste heat control circuit.
Description
Technical field
The present invention relates to a kind of afterheat generating system, specifically, relate to the Thermal protection Formed Coke Furnace afterheat generating system based on voltage-stabilized power supply circuit.
Background technology
Coke oven is also called coke oven, it is a kind of stove be built into by refractory brick and refractory block, for making coal carbonization to produce the main Thermal Equipment of coke, and modern coke oven refers to production metallurgy burnt for main purpose, the horizontal-chamber type coke oven that can reclaim coking chemistry product, it is formed primarily of body of heater and auxiliary device.
Because coke oven is produced, existing coke oven surface temperature is higher, and its furnace top surface temperature, at about 90 DEG C, accounts for more than 8% of coke oven total heat consumption.At present, following defect is all mainly there is in the world: one with domestic all coke ovens, owing to all there is no suitable recovery technology with the domestic surface radiating waste heat to coke oven in the world, simultaneously because oven top of coke oven needs long-term walking arrangement and operative employee, so cannot outside wall heat preservation be implemented, therefore the waste of the energy is not only caused, but also because the high temperature on body of heater surface causes the security incident of operator often; Its two, because coke oven top surface temperature is very high, therefore easily causes protecting coke oven tie rod Yin Gaowen and corrode.
In order to solve the problem, at present in Industrial Stoves field, devise a residual neat recovering system, although recycling can be carried out to the waste heat of part, but still waste a large amount of heat wastes, can not meet now in the world to the demand of coke oven energy-saving and emission-reduction.
In sum, there is great energy waste in current blast fumance, how fully effectively to utilize the waste heat slatterned in blast furnace production process, can secondary recycling be the difficult problem that people will capture.
Summary of the invention
The object of the invention is to overcome current people cannot fully coke oven be produced in the furnace roof waste heat that produce to carry out the defect of full use, provide a kind of Thermal protection Formed Coke Furnace afterheat generating system based on voltage-stabilized power supply circuit.
To achieve these goals, the present invention realizes by the following technical solutions:
Based on the Thermal protection Formed Coke Furnace afterheat generating system of voltage-stabilized power supply circuit, primarily of oven top of coke oven hollow place and the furnace roof clinker tile composition covering its top surface, the porose steel plate set gradually from bottom to up in the inside of oven top of coke oven hollow place, thermal baffle layer and porose steel plate, the insulating brick-layer arranged between porose steel plate and thermal baffle layer is filled out at the internal interstices place of oven top of coke oven hollow place and is filled with temperature resistant encapsulation slurry and form, the heat exchanger and evaporimeter that form loop is had in oven top of coke oven hollow place outer setting, heat exchanger is by the pedestal of cement production systD, and at the heat exchange heat pipe composition that this base interior is helically coiled or serpentine coils, and also fin is provided with on the surface of this heat exchange heat pipe, the two ends of this heat exchange heat pipe are then connected with down-comer with the tedge of evaporimeter respectively, to have surplus heat electricity generation system in evaporimeter arranged outside, and this afterheat generating system is by generator, the steam turbine be connected with generator, be connected with heat exchanger and penetrate vapour booster for pushing turbine wheel rotation, and the waste heat control circuit to be connected with steam turbine forms, hotness automatic switching circuit and the control formula power circuit be connected successively, voltage-stabilized power supply circuit and the formula of control output circuit is provided with in this waste heat control circuit, overheating protection circuit is by triode VT401, triode VT2, triode VT3, triode VT4, N pole is connected with the colelctor electrode of triode VT402, P pole is in turn through resistance R401, the light emitting diode D402 be connected with the colelctor electrode of triode VT401 after relay K 401, be connected in parallel on the diode D401 on hub K401, one end is connected with the base stage of triode VT401, the resistance R407 that the other end is connected with the colelctor electrode of triode VT402, one end is connected with the base stage of triode VT402, the slide rheostat RP401 that the other end is connected with the tie point of relay K 401 with resistance R401, one end is connected with the colelctor electrode of triode VT403, the resistance R402 that the other end is connected with the base stage of triode VT404, one end is connected with the colelctor electrode of triode VT404, the resistance R403 that the other end is connected with the base stage of triode VT403, one end is connected with the emitter stage of triode VT403, the resistance R404 that the other end is connected with the emitter stage of triode VT404, one end is connected with the emitter stage of triode VT404, the resistance R406 that the other end is connected with the base stage of triode VT402, one end is connected with the base stage of triode VT402, the other end is in turn through thermistor RT402, the thermistor RT401 of ground connection after thermistor RT403, and N pole ground connection, the light emitting diode D403 that P pole is connected with the colelctor electrode of triode VT404 after resistance R405 forms, wherein, the emitter stage of triode VT401 is connected with the emitter stage of triode VT402, the emitter stage of triode VT403 is connected with the emitter stage of triode VT404, the emitter stage of triode VT403 is also connected on the tie point of resistance R401 and relay K 401, and the normal open switch of relay K 401 is arranged on the input of Warming-up control circuit.
Wherein, voltage-stabilized power supply circuit is by transformer T2, triode VT3, triode VT4, triode VT5, 7805 voltage-stablizers, two inputs are connected to the diode bridge rectifier U1 at the secondary coil two ends of transformer T2, positive pole is connected with the positive output end of diode bridge rectifier U1, the electric capacity C4 that negative pole is connected with the negative output terminal of diode bridge rectifier U1, positive pole is connected with the positive pole of capacitor C4, the electric capacity C5 that negative pole is connected with the colelctor electrode of triode VT3, one end is connected with the emitter stage of triode VT3, the inductance L 1 that the other end is connected with the colelctor electrode of triode VT4, negative pole is connected with the pin 2 of 7805 voltage-stablizers, the electric capacity C7 that positive pole is connected with the pin 3 of 7805 voltage-stablizers, one end is connected with the positive pole of electric capacity C7, the resistance R5 that the other end is connected with the base stage of triode VT4 through resistance R6, positive pole is connected with the base stage of triode VT4, the electric capacity C6 that negative pole is connected with the colelctor electrode of triode VT4, one end is connected with the negative pole of electric capacity C7, the resistance R7 that the other end is connected with the base stage of triode VT5, P pole is connected with the emitter stage of triode VT5, the diode D5 that N pole is connected with the positive pole of electric capacity C7, P pole is connected with the colelctor electrode of triode VT5, the diode D6 that N pole is connected with the negative pole of electric capacity C6, and positive pole is connected with the positive pole of electric capacity C7, the electric capacity C8 that negative pole is connected with the negative pole of electric capacity C6 forms, wherein, the negative pole of electric capacity C4 is also connected with the emitter stage of triode VT3, the positive pole of electric capacity C5 is also connected with the pin 1 of 7805 voltage-stablizers, the base stage of triode VT3 is connected with the emitter stage of triode VT4, the positive output end of diode bridge rectifier U1 is connected with the pin 2 of 7805 voltage-stablizers, and the negative pole of electric capacity C6 is connected with the base stage of triode VT5.
Further, above-mentioned control formula power circuit is by power switch, triode VT1, transformer T1, P pole is connected with the colelctor electrode of triode VT1, N pole is sequentially through diode D1, the diode D2 be connected with the emitter stage of triode VT1 after resistance R1, the relay K be in parallel with diode D2, positive pole is connected with the N pole of diode D2, the electric capacity C2 that negative pole is connected with the base stage of triode VT1 after resistance R2, and positive pole is connected with the Same Name of Ends of the secondary coil of transformer T1, and the electric capacity C1 that negative pole is connected with the non-same polarity of this secondary coil forms, the P pole of described diode D1 is connected with the positive pole of electric capacity C1, and the emitter stage of triode VT1 is then connected with the negative pole of electric capacity C1, described power switch is by button S, and the normally-closed contact K-1 of the relay K in parallel with this button S-phase forms, the Same Name of Ends of the primary coil of transformer T1 is connected with one end of button S, the input-1 that the non-same polarity of the primary coil of transformer T1 then forms external power source together with the other end of button S forms with switch S, and normal closing type relay K switch-1 in parallel with switch S after be connected on power supply, the negative pole of electric capacity C1 is connected on the non-same polarity of the primary coil of transformer T2, and the positive pole of electric capacity C2 is connected on the Same Name of Ends of the primary coil of transformer T2.
Further, above-mentioned control formula output circuit is by triode VT2, one end is connected with the emitter stage of triode VT2, the resistance R3 of other end ground connection after slide rheostat RP1, the electric capacity C3 that negative pole is connected with the tie point of slide rheostat RP1 with resistance R3, positive pole is connected with the positive pole of electric capacity C2, and the diode D3 that P pole is connected with the emitter stage of triode VT2, N pole is connected with the base stage of triode VT2 in turn after diode D4, resistance R4 forms; The sliding contact of slide rheostat RP1 is connected with the negative pole of the colelctor electrode of triode VT2 and electric capacity C2, simultaneously this slip electric shock ground connection; The emitter stage of triode VT2 is connected with the positive pole of electric capacity C8, and the negative pole of electric capacity C3 is connected with the negative pole of electric capacity C8.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention's design is very reasonable, and not only structure is simple, well arranged, realization is convenient, automaticity is high, and can also effectively reduce manual adjustment error, can effectively reduce human cost.Meanwhile, the present invention need not arrange cooling tower more separately, not only effectively can save electric energy, also can reduce cooling water amount simultaneously, reduces operating cost.
(2) the present invention concentrates the hot water after deriving heat exchange by the superconduction ring-like heat exchange ring be embedded on furnace body sidewall and the ring-like pipe-line system corresponded, therefore increase heat transfer intensity, improve heat exchange efficiency and cooling effectiveness, and make traditional cooling water temperature bring up to 250 DEG C from 40 DEG C, thus make the utilization of the heat of cooling become possibility.
(3) pipeline that the present invention is arranged on outside furnace body cooling system furnace wall decreases nearly 90% than traditional cooling system pipeline, and the quantity of furnace shell perforate also only has 2 ~ 5% of traditional process for cooling the number of openings, not only effectively reduce heat loss, and be conducive to the insulation of blast furnace furnace wall, thus revolutionize the present situation that high stove outer covering cannot carry out being incubated, inherently improve furnace wall heat radiation.
(4) the present invention is provided with belt fin and paraffin paper at the outer wall of superconduction ring-like heat exchange ring, therefore the carburization phenomena of the ring-like heat exchange ring of superconduction can be reduced, the charcoal infiltration of more than 75% can be stopped again, thus effectively reduce cooling pipe ooze charcoal embrittlement, make improve more than twice its service life.Meanwhile, due to the use of belt fin, blast furnace lining scour resistance of the present invention is made to improve more than 5 times than existing system.
(6) the present invention can utilize the heat producing steam in next life produced in blast furnace production process fully, and then while realizing energy-conserving and environment-protective, make blast furnace cooling residual heat be utilized effectively.Simultaneously, the electricity generation system that the present invention adopts, supporting utilizing waste heat for refrigeration unit and associated couplings method effectively raise residual heat generating efficiency, blast furnace water-cooling utilization rate of waste heat is brought up to about 90%, count traditional cooling tower energy consumption in, residual heat generating efficiency of the present invention is more than doubled, and improves the UTILIZATION OF VESIDUAL HEAT IN level of whole blast furnace ironmaking industry.
(7) the present invention is provided with the waste heat control treatment system of innovation in utilizing waste heat for refrigeration unit inside, can guarantee the stable operation of whole utilizing waste heat for refrigeration unit, can guarantee that the utilization rate of waste heat of this utilizing waste heat for refrigeration unit reaches more than 90%.
(8) the present invention is provided with afterheat generating system, the waste heat that evaporimeter is produced when carrying out temperature exchange carries out gas-to electricity by afterheat generating system, better make use of waste heat, avoid the waste of heat, improve the utilization rate of the energy, and then save the production cost of enterprise.
(9) the present invention is provided with waste heat control circuit in afterheat generating system, also voltage-stabilized power supply circuit is provided with in this waste heat control circuit, can better burning voltage, make the running environment of waste heat control circuit more steady, avoid abnormal voltage and damage circuit, improve the service life of circuit, reduce enterprise and safeguard and the frequency changed, reduce further the production cost of enterprise.
(10) the present invention is provided with overheating protection circuit in afterheat generating system; automatically power-off will be carried out to system when device temperature is too high; avoid Warming-up control circuit to run in too high temperature; and then reduce the probability of circuit burnout, reduce further the use cost of enterprise.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is ring-like pipeline system architecture schematic diagram of the present invention.
Fig. 3 is the part section structural representation shown in Fig. 2.
Fig. 4 is waste heat control treatment circuit system structural representation of the present invention.
Fig. 5 is the circuit diagram of waste heat control circuit of the present invention.
Fig. 6 is the circuit diagram of voltage-stabilized power supply circuit of the present invention.
Fig. 7 is the circuit diagram of hotness automatic switching circuit of the present invention.
Wherein, the Reference numeral title in accompanying drawing is respectively:
1-oven top of coke oven hollow place, 2-furnace roof clinker tile, the porose steel plate of 3-, 4-thermal baffle layer, 5-temperature resistant encapsulation slurry, 6-insulating brick-layer, 7-atresia steel plate, 8-heat exchanger, 9-evaporimeter, 10-pedestal, 11-heat exchange heat pipe, 12-fin, 13-base.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in figures 1-4, oven top of coke oven hollow place 1 of the present invention is piled up by fragment of brick or cement etc. and is formed, the cross section of its internal cavities is inverted trapezoidal shape, namely the bottom width of this oven top of coke oven hollow place 1 is less than its top width, the bottom of oven top of coke oven hollow place 1 is then the base 13 of oven top of coke oven hollow place 1, is also provided with special heat exchanger system and atresia steel plate 7 in this oven top of coke oven hollow place 1 inside.
Effectively can be incubated in order to ensure the present invention, stop defects such as smoldering, burn with anger, therefore be provided with porose steel plate 3, thermal baffle layer 4, porose steel plate 3 and furnace roof clinker tile 2 from bottom to up successively at the cavity inside of this oven top of coke oven hollow place 1.Due to when laying, between not only described porose steel plate 3 and thermal baffle layer 4, between thermal baffle layer 4 and porose steel plate 3, between porose steel plate 3 and furnace roof clinker tile 2, there is gap, and also have gap between these porose steel plate 3 and inwalls of thermal baffle layer 4 and oven top of coke oven hollow place 1, therefore, the present invention must fill with at these gap places and fill out temperature resistant encapsulation slurry 5, to guarantee that oven top of coke oven hollow place 1 inside is the entirety of a sealing.
According to actual demand during construction, the present invention also in the inside of oven top of coke oven hollow place 1, can also lay one layer of heat preservation brick layer 6 between porose steel plate 3 and thermal baffle layer 4.Correspondingly, its gap each other also needs filling to fill out temperature resistant encapsulation slurry 5.
The KP1 that temperature resistant encapsulation slurry 5 of the present invention is preferentially 5% ~ 10% by refractory wass and concentration mixes, described thermal baffle layer 4 is that the thermal insulation board monoblock being 100mm by two layers of thickness is built by laying bricks or stones and formed, or sting block to form, the aperture of described porose steel plate 3 is then preferentially made into 60mm.
The present invention is provided with heat exchanger system, atresia steel plate 7, thermal baffle layer 4, porose steel plate 3 and furnace roof clinker tile 2 from bottom to up successively in the inside of oven top of coke oven hollow place 1, and the plane of this furnace roof clinker tile 2 will with the plane of oven top of coke oven hollow place 1 in same level.
Described heat exchanger system is then made up of the heat exchanger 8 between the base 13 being arranged on atresia steel plate 7 and oven top of coke oven hollow place 1 and the evaporimeter 9 that is arranged on oven top of coke oven hollow place 1 outside.Heat exchanger 8 of the present invention is different with traditional heat exchanger structure, and it is the pedestal 10 made by cement, and the heat exchange heat pipe 11 of the inside being arranged on this pedestal 10 is formed.
In order to ensure result of use, this heat exchange heat pipe 11 is that serpentine is arranged in the inside of pedestal 10, or arranges twist, and this heat exchange heat pipe 11 is only provided with one deck in the inside of pedestal 10.The two ends of this heat exchange heat pipe 11 then respectively introduction pipe be connected with down-comer with the tedge of evaporimeter 9, namely make between evaporimeter 9 and heat exchanger 8, to form a closed circuit sealed.Meanwhile, this heat exchange heat pipe 11 is also provided with fin 12, to guarantee further to improve its heat transfer rate.
In like manner, the present embodiment not only between pedestal 10 and base 13, fill with between atresia steel plate 7 and pedestal 10, between thermal baffle layer 4 and atresia steel plate 7, between porose steel plate 3 and thermal baffle layer 4 and between furnace roof clinker tile 2 and porose steel plate 3 and be filled with temperature resistant encapsulation slurry 5, and at pedestal 10, atresia steel plate 7, thermal baffle layer 4, also fill with between porose steel plate 3 and the inwall of oven top of coke oven hollow place 1 and be filled with temperature resistant encapsulation slurry 5, namely make the inside of whole oven top of coke oven hollow place 1 become as a whole by this temperature resistant encapsulation slurry 5.
Because coke oven is a large-scale body of heater, the quantity of the oven top of coke oven hollow place 1 arranged at its top can reach tens, even up to a hundred, but when constructing, the inside of each oven top of coke oven hollow place 1 only arranges a heat exchanger 8, and an evaporimeter 9 is also only set in the outside of oven top of coke oven hollow place 1, all heat exchangers 8 are all connected with this evaporimeter 9 by pipeline.
In order to ensure result of use, the closed circuit that this heat exchanger 8 and evaporimeter 9 are formed needs to be in vacuum state, namely the pipe interior that described heat exchange heat pipe 11 is connected with evaporimeter 9 is vacuum state, and is also provided with in its pipeline closed for participating in the circulation fluid circulated.The volume of this circulation fluid can regulate according to the difference in summer and winter, thus guarantees its heat exchange efficiency.
Described evaporimeter 9 has four mouths of pipe, i.e. down-comer, tedge, water inlet and venthole, heat exchange heat pipe 11 in down-comer and tedge and pedestal 10 forms the circulation line closed, and what then formed between water inlet and venthole is open circulation line.During use, circulation fluid absorbs heat energy and becomes steam from oven top of coke oven hollow place 1, then the tedge place of evaporimeter 9 is flow to, steam is formed after then carrying out heat exchange with this high-temperature steam from the water source that water inlet enters evaporimeter 9 inside, then emit from venthole, and the circulation fluid in pipeline becomes liquid after release heat energy, flow back to heat exchanger 8 from down-comer inner, again participate in circulation.
As illustrated in figs. 5-7, to have surplus heat electricity generation system in evaporimeter arranged outside, and this afterheat generating system is by generator, the steam turbine be connected with generator, be connected with heat exchanger and penetrate vapour booster for pushing turbine wheel rotation, the waste heat that evaporimeter is produced when carrying out temperature exchange carries out gas-to electricity by afterheat generating system, in afterheat generating system, be provided with waste heat control circuit, in this waste heat control circuit, be provided with hotness automatic switching circuit and the control formula power circuit be connected successively, voltage-stabilized power supply circuit and the formula of control output circuit.
Overheating protection circuit by triode VT401, triode VT2, triode VT3; triode VT4, resistance R401, resistance R402; resistance R403, resistance R404, resistance R405; resistance R406, resistance R407, thermistor RT401; thermistor RT402, thermistor RT403, relay K 401; diode D401, light emitting diode D402, light emitting diode D403 form.During connection, the N pole of light emitting diode D402 is connected with the colelctor electrode of triode VT402, P pole is in turn through resistance R401, be connected with the colelctor electrode of triode VT401 after relay K 401, diode D401 is connected in parallel on hub K401, one end of resistance R407 is connected with the base stage of triode VT401, the other end is connected with the colelctor electrode of triode VT402, one end of slide rheostat RP401 is connected with the base stage of triode VT402, the other end is connected with the tie point of relay K 401 with resistance R401, one end of resistance R402 is connected with the colelctor electrode of triode VT403, the other end is connected with the base stage of triode VT404, one end of resistance R403 is connected with the colelctor electrode of triode VT404, the other end is connected with the base stage of triode VT403, one end of resistance R404 is connected with the emitter stage of triode VT403, the other end is connected with the emitter stage of triode VT404, one end of resistance R406 is connected with the emitter stage of triode VT404, the other end is connected with the base stage of triode VT402, one end of thermistor RT401 is connected with the base stage of triode VT402, the other end is in turn through thermistor RT402, ground connection after thermistor RT403, the N pole ground connection of light emitting diode D403, P pole is connected with the colelctor electrode of triode VT404 after resistance R405, wherein, the emitter stage of triode VT401 is connected with the emitter stage of triode VT402, the emitter stage of triode VT403 is connected with the emitter stage of triode VT404, the emitter stage of triode VT403 is also connected on the tie point of resistance R401 and relay K 401, and the normal open switch of relay K 401 is arranged on the input of Warming-up control circuit.When three thermistors all remain on normal temperature, its resistance is lower, makes its place circuit turn-on, and relay K 401 obtains electric, and its normal open switch remains closed, and light emitting diode D403 is luminous, and whole system is normally run; And when any one temperature in three thermistors is higher, its resistance raises, cause place circuit breaker, relay K 401 dead electricity, its normal open switch disconnects, and make whole circuit, open circuit is out of service.This overheating protection circuit will carry out power-off to system automatically when device temperature is too high, avoids Warming-up control circuit and runs in too high temperature, and then reduce the probability of circuit burnout, reduce further the use cost of enterprise.
Voltage-stabilized power supply circuit by transformer T2, triode VT3, triode VT4, triode VT5,7805 voltage-stablizers, diode bridge rectifier U1, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, resistance R5, resistance R6, resistance R7, diode D5, and diode D6 forms.During connection, two inputs of diode bridge rectifier U1 are connected to the secondary coil two ends of transformer T2, the positive pole of electric capacity C4 is connected with the positive output end of diode bridge rectifier U1, negative pole is connected with the negative output terminal of diode bridge rectifier U1, the positive pole of electric capacity C5 is connected with the positive pole of capacitor C4, negative pole is connected with the colelctor electrode of triode VT3, one end of inductance L 1 is connected with the emitter stage of triode VT3, the other end is connected with the colelctor electrode of triode VT4, the negative pole of electric capacity C7 is connected with the pin 2 of 7805 voltage-stablizers, positive pole is connected with the pin 3 of 7805 voltage-stablizers, one end of resistance R5 is connected with the positive pole of electric capacity C7, the other end is connected with the base stage of triode VT4 through resistance R6, the positive pole of electric capacity C6 is connected with the base stage of triode VT4, negative pole is connected with the colelctor electrode of triode VT4, one end of resistance R7 is connected with the negative pole of electric capacity C7, the other end is connected with the base stage of triode VT5, the P pole of diode D5 is connected with the emitter stage of triode VT5, N pole is connected with the positive pole of electric capacity C7, the P pole of diode D6 is connected with the colelctor electrode of triode VT5, N pole is connected with the negative pole of electric capacity C6, the positive pole of electric capacity C8 is connected with the positive pole of electric capacity C7, negative pole is connected with the negative pole of electric capacity C6, wherein, the negative pole of electric capacity C4 is also connected with the emitter stage of triode VT3, the positive pole of electric capacity C5 is also connected with the pin 1 of 7805 voltage-stablizers, the base stage of triode VT3 is connected with the emitter stage of triode VT4, the positive output end of diode bridge rectifier U1 is connected with the pin 2 of 7805 voltage-stablizers, and the negative pole of electric capacity C6 is connected with the base stage of triode VT5.This voltage-stabilized power supply circuit, can better burning voltage, makes the running environment of waste heat control circuit more steady, avoid abnormal voltage and damage circuit, improve the service life of circuit, reduce enterprise and safeguard and the frequency changed, reduce further the production cost of enterprise.
Control formula power circuit is by power switch, and triode VT1, transformer T1, electric capacity C1, electric capacity C2, diode D1, diode D2, resistance R1, resistance R2, relay K forms.During connection, the P pole of diode D2 is connected with the colelctor electrode of triode VT1, N pole is connected with the emitter stage of triode VT1 sequentially through after diode D1, resistance R1, relay K and diode D2 are in parallel, the positive pole of electric capacity C2 is connected with the N pole of diode D2, negative pole is connected with the base stage of triode VT1 after resistance R2, and the positive pole of electric capacity C1 is connected with the Same Name of Ends of the secondary coil of transformer T1, negative pole is connected with the non-same polarity of this secondary coil; The P pole of described diode D1 is connected with the positive pole of electric capacity C1, and the emitter stage of triode VT1 is then connected with the negative pole of electric capacity C1; Described power switch is by button S, and the normally-closed contact K-1 of the relay K in parallel with this button S-phase forms, the Same Name of Ends of the primary coil of transformer T1 is connected with one end of button S, the input-1 that the non-same polarity of the primary coil of transformer T1 then forms external power source together with the other end of button S forms with switch S, and normal closing type relay K switch-1 in parallel with switch S after be connected on power supply.This circuit can judge whether also to need to power to it according to the practical operation situation of circuit, when relay K is energized, relay switch K-1 will disconnect voluntarily, when not needing to power, circuit will disconnect voluntarily, thus reaches the effect automatically controlling power-off.
Control formula output circuit is by triode VT2, and resistance R3, resistance R4, slide rheostat RP1, electric capacity C3, diode D3, diode D4 form.During connection, one end of resistance R3 is connected with the emitter stage of triode VT2, other end ground connection after slide rheostat RP1, the negative pole of electric capacity C3 is connected with the tie point of slide rheostat RP1 with resistance R3, positive pole is connected with the positive pole of electric capacity C2, and the P pole of diode D3 is connected with the emitter stage of triode VT2, N pole is connected with the base stage of triode VT2 in turn after diode D4, resistance R4; The sliding contact of slide rheostat RP1 is connected with the negative pole of the colelctor electrode of triode VT2 and electric capacity C2, simultaneously this slip electric shock ground connection; The emitter stage of triode VT2 is connected with the positive pole of electric capacity C8, and the negative pole of electric capacity C3 is connected with the negative pole of electric capacity C8.
As mentioned above, just the present invention can be realized preferably.
Claims (4)
1. based on the Thermal protection Formed Coke Furnace afterheat generating system of voltage-stabilized power supply circuit, primarily of oven top of coke oven hollow place (1), cover the furnace roof clinker tile (2) of oven top of coke oven hollow place (1) top surface, porose steel plate (3) is disposed with from bottom to up in oven top of coke oven hollow place (1) inside, thermal baffle layer (4) and porose steel plate (3), be arranged on the insulating brick-layer (6) between porose steel plate (3) and thermal baffle layer (4), fill out the temperature resistant encapsulation slurry (5) at the internal interstices place being filled in oven top of coke oven hollow place (1), be arranged on oven top of coke oven hollow place (1) outside and form the heat exchanger (8) of loop and evaporimeter (9), to be connected with heat exchanger (8) and by the pedestal (10) of cement production systD, be arranged on the heat exchange heat pipe (11) of this pedestal (10) inner also helically coiling or serpentine coiling, and fin (12) composition be arranged on this heat exchange heat pipe (11) surface, the two ends of described heat exchange heat pipe (11) are connected with down-comer with the tedge of evaporimeter (9) respectively, it is characterized in that, to have surplus heat electricity generation system in evaporimeter (9) arranged outside, and this afterheat generating system is by generator, the steam turbine be connected with generator, be connected with heat exchanger and penetrate vapour booster for pushing turbine wheel rotation, and the waste heat control circuit to be connected with steam turbine forms, this waste heat control circuit is made up of with the control formula power circuit be connected successively, voltage-stabilized power supply circuit and the formula of control output circuit hotness automatic switching circuit, described overheating protection circuit is by triode VT401, triode VT2, triode VT3, triode VT4, N pole is connected with the colelctor electrode of triode VT402, P pole is in turn through resistance R401, the light emitting diode D402 be connected with the colelctor electrode of triode VT401 after relay K 401, be connected in parallel on the diode D401 on hub K401, one end is connected with the base stage of triode VT401, the resistance R407 that the other end is connected with the colelctor electrode of triode VT402, one end is connected with the base stage of triode VT402, the slide rheostat RP401 that the other end is connected with the tie point of relay K 401 with resistance R401, one end is connected with the colelctor electrode of triode VT403, the resistance R402 that the other end is connected with the base stage of triode VT404, one end is connected with the colelctor electrode of triode VT404, the resistance R403 that the other end is connected with the base stage of triode VT403, one end is connected with the emitter stage of triode VT403, the resistance R404 that the other end is connected with the emitter stage of triode VT404, one end is connected with the emitter stage of triode VT404, the resistance R406 that the other end is connected with the base stage of triode VT402, one end is connected with the base stage of triode VT402, the other end is in turn through thermistor RT402, the thermistor RT401 of ground connection after thermistor RT403, and N pole ground connection, the light emitting diode D403 that P pole is connected with the colelctor electrode of triode VT404 after resistance R405 forms, wherein, the emitter stage of triode VT401 is connected with the emitter stage of triode VT402, the emitter stage of triode VT403 is connected with the emitter stage of triode VT404, the emitter stage of triode VT403 is also connected on the tie point of resistance R401 and relay K 401, and the normal open switch of relay K 401 is arranged on the input of Warming-up control circuit.
2. the Thermal protection Formed Coke Furnace afterheat generating system based on voltage-stabilized power supply circuit according to claim 1, it is characterized in that, described voltage-stabilized power supply circuit is by transformer T2, triode VT3, triode VT4, triode VT5, 7805 voltage-stablizers, two inputs are connected to the diode bridge rectifier U1 at the secondary coil two ends of transformer T2, positive pole is connected with the positive output end of diode bridge rectifier U1, the electric capacity C4 that negative pole is connected with the negative output terminal of diode bridge rectifier U1, positive pole is connected with the positive pole of capacitor C4, the electric capacity C5 that negative pole is connected with the colelctor electrode of triode VT3, one end is connected with the emitter stage of triode VT3, the inductance L 1 that the other end is connected with the colelctor electrode of triode VT4, negative pole is connected with the pin 2 of 7805 voltage-stablizers, the electric capacity C7 that positive pole is connected with the pin 3 of 7805 voltage-stablizers, one end is connected with the positive pole of electric capacity C7, the resistance R5 that the other end is connected with the base stage of triode VT4 through resistance R6, positive pole is connected with the base stage of triode VT4, the electric capacity C6 that negative pole is connected with the colelctor electrode of triode VT4, one end is connected with the negative pole of electric capacity C7, the resistance R7 that the other end is connected with the base stage of triode VT5, P pole is connected with the emitter stage of triode VT5, the diode D5 that N pole is connected with the positive pole of electric capacity C7, P pole is connected with the colelctor electrode of triode VT5, the diode D6 that N pole is connected with the negative pole of electric capacity C6, and positive pole is connected with the positive pole of electric capacity C7, the electric capacity C8 that negative pole is connected with the negative pole of electric capacity C6 forms, wherein, the negative pole of electric capacity C4 is also connected with the emitter stage of triode VT3, the positive pole of electric capacity C5 is also connected with the pin 1 of 7805 voltage-stablizers, the base stage of triode VT3 is connected with the emitter stage of triode VT4, the positive output end of diode bridge rectifier U1 is connected with the pin 2 of 7805 voltage-stablizers, and the negative pole of electric capacity C6 is connected with the base stage of triode VT5.
3. the Thermal protection Formed Coke Furnace afterheat generating system based on voltage-stabilized power supply circuit according to claim 2, it is characterized in that, described control formula power circuit is by power switch, triode VT1, transformer T1, P pole is connected with the colelctor electrode of triode VT1, N pole is sequentially through diode D1, the diode D2 be connected with the emitter stage of triode VT1 after resistance R1, the relay K be in parallel with diode D2, positive pole is connected with the N pole of diode D2, the electric capacity C2 that negative pole is connected with the base stage of triode VT1 after resistance R2, and positive pole is connected with the Same Name of Ends of the secondary coil of transformer T1, and the electric capacity C1 that negative pole is connected with the non-same polarity of this secondary coil forms, the P pole of described diode D1 is connected with the positive pole of electric capacity C1, and the emitter stage of triode VT1 is then connected with the negative pole of electric capacity C1, described power switch is by button S, and the normally-closed contact K-1 of the relay K in parallel with this button S-phase forms, the Same Name of Ends of the primary coil of transformer T1 is connected with one end of button S, the input-1 that the non-same polarity of the primary coil of transformer T1 then forms external power source together with the other end of button S forms with switch S, and normal closing type relay K switch-1 in parallel with switch S after be connected on power supply, the negative pole of electric capacity C1 is connected on the non-same polarity of the primary coil of transformer T2, and the positive pole of electric capacity C2 is connected on the Same Name of Ends of the primary coil of transformer T2.
4. the Thermal protection Formed Coke Furnace afterheat generating system based on voltage-stabilized power supply circuit according to claim 3, it is characterized in that, described control formula output circuit is by triode VT2, one end is connected with the emitter stage of triode VT2, the resistance R3 of other end ground connection after slide rheostat RP1, negative pole is connected with the tie point of slide rheostat RP1 with resistance R3, the electric capacity C3 that positive pole is connected with the positive pole of electric capacity C2, and P pole is connected with the emitter stage of triode VT2, N pole is in turn through diode D4, the diode D3 be connected with the base stage of triode VT2 after resistance R4 forms, the sliding contact of slide rheostat RP1 is connected with the negative pole of the colelctor electrode of triode VT2 and electric capacity C2, simultaneously this slip electric shock ground connection, the emitter stage of triode VT2 is connected with the positive pole of electric capacity C8, and the negative pole of electric capacity C3 is connected with the negative pole of electric capacity C8.
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