CN105403053A - Discharging device based on voltage protection and used for motor quick braking type carbon baking furnace - Google Patents
Discharging device based on voltage protection and used for motor quick braking type carbon baking furnace Download PDFInfo
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- CN105403053A CN105403053A CN201510786052.0A CN201510786052A CN105403053A CN 105403053 A CN105403053 A CN 105403053A CN 201510786052 A CN201510786052 A CN 201510786052A CN 105403053 A CN105403053 A CN 105403053A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/04—Carbon-containing material
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The invention discloses a discharging device based on voltage protection and used for a motor quick braking type carbon baking furnace. The discharging device is characterized in that the discharging device is mainly composed of a tank body (1), a sealing cover (5) arranged on a discharging port (3), a first motor (6) connected with the sealing cover (5) and used for controlling opening and closing of the sealing cover (5), an exhaust fan (7) arranged on the top of the tank body (1), a second motor (8) electrically connected with the exhaust fan (7) and used for driving the exhaust fan (7), and the like; a material sucking pipe (2) is arranged on the side wall of the tank body (1), and a filter screen (4) is arranged on the upper side of the interior of the tank body (1); a control unit (9) is composed of an air switch QF, a three-phase power supply phase sequence protection circuit, a motor forward rotation control circuit, a motor reverse rotation control circuit and a motor braking circuit. The discharging device is provided with the motor braking circuit which can control the motors to stop rotating quickly, and therefore the problem of inertial operation generated after the motors are turned off is well solved, and the opening and closing accuracy of the sealing cover is improved.
Description
Technical field
The present invention relates to field of aluminum electrolysis, specifically refer to a kind of motor fast braking formula carbon roasting furnace discharge device based on voltage protection.
Background technology
Roaster is the key equipment that charcoal element is produced, when calcining carbon is come out of the stove, people usually adopt grab bucket to take the operational method that combines with hand digging and take out as the metallurgical coke of stove inner filling material or petroleum coke, but this operational method is not only in high temperature, heavy dust environment to site operation personnel, brings very large personal safety hidden danger to operating personnel.Meanwhile, this method of operating labour intensity is large, and efficiency is low, brings very large cost pressure to enterprise.Therefore, how to overcome above-mentioned defect, but the current task of top priority.
Summary of the invention
The object of the invention is to overcome traditional roaster clinker removal method labour intensity large, and scarfing cinder process environment is severe, cannot guarantee the defect of operating personnel's personal safety, provide a kind of motor fast braking formula carbon roasting furnace discharge device based on voltage protection.
The following technical scheme of object of the present invention realizes: based on the motor fast braking formula carbon roasting furnace discharge device of voltage protection, the tank body of discharge gate is provided with primarily of bottom, be arranged on the seal cover on discharge gate, be connected with seal cover and control the first motor of seal cover switch, be arranged on the air exhauster at tank body top, be electrically connected with air exhauster and drive the second motor of air exhauster, and to be arranged on tank body and the control unit be electrically connected with the first motor and the second motor respectively forms; Described tank wall is provided with suction tube, and is provided with filter screen on the upside of tank interior; Described control unit by air switch QF, three-phase power supply phase sequence protection circuit, motor rotate forward control circuit, motor reversal control circuit, motor braking circuits and overvoltage crowbar form; Described air switch QF is serially connected on power line; first motor is then connected with the output of air switch QF respectively with the second motor; three-phase power supply phase sequence protection circuit is then serially connected on the power line of the second motor; motor rotates forward control circuit and motor reversal control circuit is then serially connected between the L2 phase firewire of power line and L3 phase firewire respectively; motor braking circuits is then connected with motor reversal control circuit, and overvoltage crowbar is then connected with wantonly two live wires of the power line of the first motor.
Further, described overvoltage crowbar is by three terminal regulator U3, amplifier P1, amplifier P2, triode VT5, triode VT6, triode VT7, positive pole is connected with the IN pin of three terminal regulator U3, the electric capacity C8 that negative pole is then connected with the base stage of triode VT6 after resistance R8, be serially connected in the resistance R9 between the colelctor electrode of triode VT6 and the positive pole of amplifier P2, N pole is connected with the negative pole of amplifier P2, the Zener diode D9 of P pole ground connection, be serially connected in the resistance R11 between the base stage of triode VT5 and the output of amplifier P2, be serially connected in the resistance R10 between the output of amplifier P1 and the base stage of triode VT7, positive pole is connected with the OUT pin of three terminal regulator U3, the electric capacity C9 that negative pole is then connected with the positive pole of amplifier P1, N pole is connected with the OUT pin of three terminal regulator U3, the diode D10 that P pole is then connected with the colelctor electrode of triode VT7, and form with the relay K 3 that diode D10 is in parallel, the positive pole of described electric capacity C8 is also connected with a wherein live wire of the power line of the first motor, and its negative pole is then connected with another live wire of the power line of the first motor, the emitter stage of described triode VT6 is connected with the negative pole of amplifier P1, the colelctor electrode of described triode VT5 is connected with the base stage of triode VT7, its grounded emitter, the grounded emitter of described triode VT7, the normally-closed contact K3-1 of described relay K 3 is then arranged on motor and rotates forward in control circuit, the GND pin ground connection of described three terminal regulator U3.
Described motor rotates forward control circuit and comprises button SB1 and contactor KM1; Described motor reversal control circuit comprises button SB2 and contactor KM2; The input of described button SB1 is connected with L3 phase firewire, and its output is then connected with L2 phase firewire after the normally-closed contact K3-1 of relay K 3 through contactor KM1 in turn; The input of described button SB2 is connected with the input of button SB1, and its output is then connected with the output of contactor KM1 after contactor KM2; Normally opened contact KM1-1 and KM2-1 of described contactor KM1 and contactor KM2 is all arranged on the power line of the first motor, and parallel with one another.
Described motor braking circuits is by transformer T, be arranged on the inductance coil L1 on the former limit of transformer T, be arranged on inductance coil L2 and the inductance coil L3 of transformer T secondary, the first control circuit be connected with inductance coil L2, and the second control circuit be connected with inductance coil L3 forms; The Same Name of Ends of described inductance coil L1 is connected with the input of button SB1, its non-same polarity is then connected with the output of contactor KM1.
Described first control circuit by diode rectifier U1, triode VT3, the electric capacity C4 that positive pole is connected with the cathode output end of diode rectifier U1, negative pole is then connected with the base stage of triode VT3 after resistance R6; The electric capacity C5 that positive pole is connected with the positive pole of electric capacity C4, negative pole is then connected with the emitter stage of triode VT3; The diode D5 that N pole is connected with the colelctor electrode of triode VT3, P pole is then connected with the cathode output end of diode rectifier U1 after the normally opened contact KM1-2 of contactor KM1; The relay K 1 that input is connected with the positive pole of electric capacity C4, output is then connected with the emitter stage of triode VT3 after the normally-closed contact KM1-3 of contactor KM1; And the diode D6 that N pole is connected with the positive pole of electric capacity C4, P pole is then connected with the emitter stage of triode VT3 forms; The base stage of described triode VT3 is connected with the P pole of diode D5; The non-same polarity of described inductance coil L2 is connected with an input of diode rectifier U1, its Same Name of Ends is then connected with another input of diode rectifier U1; The normally opened contact K1-1 of described relay K 1 is then in parallel with button SB2.
Described second control circuit by diode rectifier U2, triode VT4, the electric capacity C6 that positive pole is connected with the cathode output end of diode rectifier U2, negative pole is then connected with the base stage of triode VT4 after resistance R7; The electric capacity C7 that positive pole is connected with the positive pole of electric capacity C6, negative pole is then connected with the emitter stage of triode VT4; The diode D7 that N pole is connected with the colelctor electrode of triode VT4, P pole is then connected with the cathode output end of diode rectifier U2 after the normally opened contact KM2-2 of contactor KM2; The relay K 2 that input is connected with the positive pole of electric capacity C6, output is then connected with the emitter stage of triode VT4 after the normally-closed contact KM2-3 of contactor KM2; And the diode D8 that N pole is connected with the positive pole of electric capacity C6, P pole is then connected with the emitter stage of triode VT4 forms; The base stage of described triode VT4 is connected with the P pole of diode D7; The non-same polarity of described inductance coil L3 is connected with an input of diode rectifier U2, its Same Name of Ends is then connected with another input of diode rectifier U2; The normally opened contact K2-1 of described relay K 2 is then in parallel with button SB1.
Described three-phase power supply phase sequence protection circuit is by diode rectifier U, triode VT1, triode VT2, positive pole is connected with the L2 phase firewire of the power line of the second motor, the electric capacity C1 that negative pole is then connected with the L1 phase of the power line of the second motor after resistance R1, positive pole is connected with the cathode output end of diode rectifier U after Zener diode D1, the electric capacity C2 that negative pole is then connected with the emitter stage of triode VT2 after diode D3, one end is connected with the positive pole of electric capacity C2, the resistance R2 that the other end is then connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the piezo-resistance R3 that the other end is then connected with the cathode output end of diode rectifier U, N pole is connected with the colelctor electrode of triode VT1, the diode D2 that P pole is then connected with the cathode output end of diode rectifier U, be serially connected in the electric capacity C3 between the base stage of triode VT1 and the base stage of triode VT2, be serially connected in the resistance R4 between the emitter stage of triode VT1 and the colelctor electrode of triode VT2, N pole is connected with the emitter stage of triode VT1, the diode D4 that P pole is then connected with the negative pole of electric capacity C2 after resistance R5, the relay K be in parallel with diode D4 forms, the normally opened contact K-1 of described relay K is then serially connected on the power line of the second motor, and an input of described diode rectifier U is connected with the L3 phase firewire of the power line of the second motor, its another input is then connected with the negative pole of electric capacity C1.
Described three terminal regulator U3 is 7812 type voltage stabilizing chips.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention can discharge the metallurgical coke in carbon roasting furnace or petroleum coke, and does not need manually to carry out discharge, thus can reduce cost of labor, the personal safety of protection operating personnel.
(2) the present invention adopts control unit to control suction and discharge, and its automation is high, control precision is high.
(3) control unit of the present invention is provided with three-phase power supply phase sequence protection circuit, the mechanical failure that when it can prevent power phase wrong, motor causes mutually on the contrary due to rotation direction or production accident.
(4) the present invention is provided with motor braking circuits it can control the quick stall of motor, thus well solves the coasting problem after motor stopping, improves the degree of accuracy that seal cover is opened, closed.
(5) the present invention is provided with overvoltage crowbar, and it can carry out overvoltage protection to the first motor, and the first motor is damaged from overvoltage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the electrical structure diagram of control unit of the present invention.
Fig. 3 is the structure chart of overvoltage crowbar of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, motor fast braking formula carbon roasting furnace discharge device based on voltage protection of the present invention, the tank body 1 of discharge gate 3 is provided with primarily of bottom, be arranged on the seal cover 5 on discharge gate 3, be connected with seal cover 5 and control the first motor 6 of seal cover 5 switch, be arranged on the air exhauster 7 at tank body 1 top, be electrically connected with air exhauster 7 and drive the second motor 8 of air exhauster 7, and to be arranged on tank body 1 and the control unit 9 be electrically connected with the first motor 6 and the second motor 8 respectively forms; Described tank body 1 sidewall is provided with suction tube 2, and tank body 1 upper inside is provided with filter screen 4.
Operationally, suction tube 2 extend in carbon roasting furnace, first motor 6 rotates forward and drives seal cover 5 to cut out, second motor 8 starts and drives air exhauster 7 exhausting, owing to producing negative pressure in tank body 1, at this moment suction tube 2 starts the waste material in carbon roasting furnace to be drawn in tank body 1, and due to the filtration of filter screen 4, waste material can not enter into and affect air exhauster 7 in the cavity that formed by filter screen 4 and tank body 1 roof and work.After filling waste material in tank body 1, control the first motor 6 and reverse, thus make seal cover 5 open discharge waste material.Control unit 9 is for controlling the work of the first motor 6 and the second motor 8.
As shown in Figure 2,3, described control unit is by air switch QF, and three-phase power supply phase sequence protection circuit, motor rotates forward control circuit, motor reversal control circuit, motor braking circuits and overvoltage crowbar composition.
Wherein, described air switch QF is serially connected on power line; first motor 6 is connected with the output of air switch QF respectively with 8, the second motor; three-phase power supply phase sequence protection circuit is then serially connected on the power line of the second motor 8; motor rotates forward control circuit and motor reversal control circuit is then serially connected between the L2 phase firewire of power line and L3 phase firewire respectively; motor braking circuits is then connected with motor reversal control circuit, and overvoltage crowbar is then connected with wantonly two live wires of the power line of the first motor.
Described overvoltage crowbar is by three terminal regulator U3, amplifier P1, amplifier P2, triode VT5, triode VT6, triode VT7, positive pole is connected with the IN pin of three terminal regulator U3, the electric capacity C8 that negative pole is then connected with the base stage of triode VT6 after resistance R8, be serially connected in the resistance R9 between the colelctor electrode of triode VT6 and the positive pole of amplifier P2, N pole is connected with the negative pole of amplifier P2, the Zener diode D9 of P pole ground connection, be serially connected in the resistance R11 between the base stage of triode VT5 and the output of amplifier P2, be serially connected in the resistance R10 between the output of amplifier P1 and the base stage of triode VT7, positive pole is connected with the OUT pin of three terminal regulator U3, the electric capacity C9 that negative pole is then connected with the positive pole of amplifier P1, N pole is connected with the OUT pin of three terminal regulator U3, the diode D10 that P pole is then connected with the colelctor electrode of triode VT7, and form with the relay K 3 that diode D10 is in parallel.
The positive pole of described electric capacity C8 is also connected with a wherein live wire of the power line of the first motor 6, and its negative pole is then connected with another live wire of the power line of the first motor 6.The emitter stage of described triode VT6 is connected with the negative pole of amplifier P1.The colelctor electrode of described triode VT5 is connected with the base stage of triode VT7, its grounded emitter.The grounded emitter of described triode VT7, the normally-closed contact K3-1 of described relay K 3 is then arranged on motor and rotates forward in control circuit; The GND pin ground connection of described three terminal regulator U3.In order to reach better implementation result, described three terminal regulator U3 is preferably 7812 type voltage stabilizing chips and realizes.
Described motor rotates forward control circuit and comprises button SB1 and contactor KM1.Described motor reversal control circuit comprises button SB2 and contactor KM2.
During connection, the input of described button SB1 is connected with L3 phase firewire, and its output is then connected with L2 phase firewire after the normally-closed contact K3-1 of relay K 3 through contactor KM1 in turn.The input of described button SB2 is connected with the input of button SB1, and its output is then connected with the output of contactor KM1 after contactor KM2.Normally opened contact KM1-1 and KM2-1 of described contactor KM1 and contactor KM2 is all arranged on the power line of the first motor 6, and parallel with one another.
Described motor braking circuits is by transformer T, be arranged on the inductance coil L1 on the former limit of transformer T, be arranged on inductance coil L2 and the inductance coil L3 of transformer T secondary, the first control circuit be connected with inductance coil L2, and the second control circuit be connected with inductance coil L3 forms.The Same Name of Ends of described inductance coil L1 is connected with the input of button SB1, its non-same polarity is then connected with the output of contactor KM1.
In addition, described first control circuit is by diode rectifier U1, and triode VT3, resistance R6, electric capacity C4, electric capacity C5, diode D5, diode D6 and relay K 1 form.
During connection, the positive pole of electric capacity C4 is connected with the cathode output end of diode rectifier U1, its negative pole is then connected with the base stage of triode VT3 after resistance R6.The positive pole of electric capacity C5 is connected with the positive pole of electric capacity C4, its negative pole is then connected with the emitter stage of triode VT3.The N pole of diode D5 is connected with the colelctor electrode of triode VT3, its P pole is then connected with the cathode output end of diode rectifier U1 after the normally opened contact KM1-2 of contactor KM1.The input of relay K 1 is connected with the positive pole of electric capacity C4, its output is then connected with the emitter stage of triode VT3 after the normally-closed contact KM1-3 of contactor KM1.The N pole of diode D6 is connected with the positive pole of electric capacity C4, its P pole is then connected with the emitter stage of triode VT3.
Meanwhile, the base stage of described triode VT3 is connected with the P pole of diode D5; The non-same polarity of described inductance coil L2 is connected with an input of diode rectifier U1, its Same Name of Ends is then connected with another input of diode rectifier U1.The normally opened contact K1-1 of described relay K 1 is then in parallel with button SB2.
Described second control circuit is by diode rectifier U2, and triode VT4, resistance R7, electric capacity C6, electric capacity C7, diode D7, diode D8 and relay K 2 form.
During connection, the positive pole of electric capacity C6 is connected with the cathode output end of diode rectifier U2, its negative pole is then connected with the base stage of triode VT4 after resistance R7.The positive pole of electric capacity C7 is connected with the positive pole of electric capacity C6, its negative pole is then connected with the emitter stage of triode VT4.The N pole of diode D7 is connected with the colelctor electrode of triode VT4, its P pole is then connected with the cathode output end of diode rectifier U2 after the normally opened contact KM2-2 of contactor KM2.The input of relay K 2 is connected with the positive pole of electric capacity C6, its output is then connected with the emitter stage of triode VT4 after the normally-closed contact KM2-3 of contactor KM2.The N pole of diode D8 is connected with the positive pole of electric capacity C6, its P pole is then connected with the emitter stage of triode VT4.
Meanwhile, the base stage of described triode VT4 is connected with the P pole of diode D7; The non-same polarity of described inductance coil L3 is connected with an input of diode rectifier U2, its Same Name of Ends is then connected with another input of diode rectifier U2.The normally opened contact K2-1 of described relay K 2 is then in parallel with button SB1.
During work, press air switch QF and button SB1, contactor KM1 is obtained electric, its normally opened contact KM1-1 closes, and the first motor 6 starts to rotate forward and drives seal cover 5 to cut out.The normally opened contact KM1-2 of contactor KM1 closes simultaneously, and normally-closed contact KM1-3 then disconnects, and transformer T obtains electric, and diode rectifier U1 exports direct current, and this direct current charges to electric capacity C5 after triode VT3.When seal cover 5 closes cut-off push button SB1 well, at this moment its normally opened contact of contactor KM1 dead electricity KM1-1 again disconnects and makes the first motor 6 power-off.Simultaneously; the normally opened contact KM1-2 of contactor KM1 disconnects again; its normally-closed contact KM1-3 then closes again; electric capacity C5 then start electric discharge make relay K 1 electric; the normally opened contact K1-1 of relay K 1 closes, at this moment contactor KM2 instantaneously electric its normally opened contact KM2-1 closes instantaneously, apply a reverse current instantaneously to the first motor 6; first motor 6 is quick stall under the effect of this reverse current, thus solves the coasting problem after motor failure.
After filling waste material in tank body 1, press the button SB2, contactor KM2 is obtained electric, its normally opened contact KM2-1 closes, and the first motor 6 starts to reverse and drives seal cover 5 to open.The normally opened contact KM2-2 of contactor KM2 closes simultaneously, and normally-closed contact KM2-3 then disconnects, and transformer T obtains electric, and diode rectifier U2 exports direct current, and this direct current charges to electric capacity C7 after triode VT4.The cut-off push button SB2 when seal cover 5 is opened to restriction position, at this moment its normally opened contact of contactor KM2 dead electricity KM2-1 again disconnects and makes the first motor 6 power-off.Simultaneously, the normally opened contact KM2-2 of contactor KM2 disconnects again, its normally-closed contact KM2-3 then closes again, electric capacity C7 then start electric discharge make relay K 2 electric, the normally opened contact K2-1 of relay K 2 closes, at this moment contactor KM1 instantaneously electric its normally opened contact KM1-1 closes instantaneously, apply one to the first motor 6 and rotate forward electric current instantaneously, the first motor 6 is fast stall under this rotates forward the effect of electric current.
When power supply is normal, due to the obstruct of triode VT6, the output output low level of amplifier P1 and amplifier P2, at this moment the base stage input low level of triode VT7 and triode VT5, therefore can not conducting, relay K 3 must not remain closed by its normally-closed contact of electricity K3-1, and motor rotates forward control circuit and motor reversal control circuit can normally work.
When power supply occurs that overvoltage shows picture; the output of amplifier P1 and amplifier P2 exports high level; at this moment the base stage input high level of triode VT7 and triode VT5; at this moment triode VT5 starts conducting; voltage exports and the base stage of the triode VT7 that is added to from its colelctor electrode; thus make the rapid conducting of triode VT4; and then relay K 3 must be disconnected by electric its normally-closed contact K3-1; motor rotates forward control circuit and motor reversal control circuit dead electricity and cannot action; at this moment then cannot start the first motor 6, so then can protect the first motor 6.
Described three-phase power supply phase sequence protection circuit can to prevent when power phase wrong the second motor 8 to cause mechanical failure or production accident on the contrary mutually due to rotation direction, and it is by diode rectifier U, triode VT1; triode VT2, resistance R1, resistance R2; piezo-resistance R3, resistance R4, resistance R5; electric capacity C1, electric capacity C2, electric capacity C3; Zener diode D1; Zener diode D2, diode D3, diode D4 and relay K composition.
During connection, the positive pole of electric capacity C1 is connected with the L2 phase firewire of the power line of the second motor 8, its negative pole is then connected with the L1 phase of the power line of the second motor 8 after resistance R1, the positive pole of electric capacity C2 is connected with the cathode output end of diode rectifier U after Zener diode D1, its negative pole is then connected with the emitter stage of triode VT2 after diode D3, one end of resistance R2 is connected with the positive pole of electric capacity C2, its other end is then connected with the base stage of triode VT2, one end of piezo-resistance R3 is connected with the base stage of triode VT2, its other end is then connected with the cathode output end of diode rectifier U, the N pole of Zener diode D2 is connected with the colelctor electrode of triode VT1, its P pole is then connected with the cathode output end of diode rectifier U, electric capacity C3 is then serially connected between the base stage of triode VT1 and the base stage of triode VT2, resistance R4 is serially connected between the emitter stage of triode VT1 and the colelctor electrode of triode VT2, the N pole of diode D4 is connected with the emitter stage of triode VT1, its P pole is then connected with the negative pole of electric capacity C2 after resistance R5, relay K is then in parallel with diode D4.The normally opened contact K-1 of described relay K is then serially connected on the power line of the second motor 8, and an input of described diode rectifier U is connected with the L3 phase firewire of the power line of the second motor 8, its another input is then connected with the negative pole of electric capacity C1.
During work, closed air switch QF, diode rectifier U are converted to direct current alternating current and export, and by Zener diode D1 and Zener diode D2 voltage stabilizing, meanwhile, triode VT1 and triode VT2 conducting, relay K obtains electric its normally opened contact K-1 and closes, and the second motor 8 obtains electric work.Wherein, piezo-resistance R3 not conducting under normal circumstances, when overvoltage appears in diode rectifier U, piezo-resistance R3 conducting also absorbs overvoltage, thus subsequent conditioning circuit can be protected not damaged, and relay K does not produce misoperation.When the L1 phase of three phase mains, L2 phase and L3 phase are forward phase sequence, the voltage in relay K is about 20V, and it obtains electric adhesive, and the second motor 8 can start.When the L1 phase of three phase mains, L2 phase and L3 phase firewire phase sequence wrong, the voltage in relay K is about 5V, and its normally opened contact that do not work remains open, and the second motor 8 does not work, and provide phase sequence so then can to the second motor 8.
As mentioned above, just well the present invention can be realized.
Claims (8)
1. based on the motor fast braking formula carbon roasting furnace discharge device of voltage protection, it is characterized in that, the tank body (1) of discharge gate (3) is provided with primarily of bottom, be arranged on the seal cover (5) on discharge gate (3), be connected with seal cover (5) and control first motor (6) of seal cover (5) switch, be arranged on the air exhauster (7) at tank body (1) top, be electrically connected with air exhauster (7) and drive second motor (8) of air exhauster (7), and be arranged on the upper and control unit (9) be electrically connected with the first motor (6) and the second motor (8) respectively of tank body (1) and form, described tank body (1) sidewall is provided with suction tube (2), and tank body (1) upper inside is provided with filter screen (4), described control unit (9) by air switch QF, three-phase power supply phase sequence protection circuit, motor rotate forward control circuit, motor reversal control circuit, motor braking circuits and overvoltage crowbar form, described air switch QF is serially connected on power line, first motor (6) is then connected with the output of air switch QF respectively with the second motor (8), three-phase power supply phase sequence protection circuit is then serially connected on the power line of the second motor (8), motor rotates forward control circuit and motor reversal control circuit is then serially connected between the L2 phase firewire of power line and L3 phase firewire respectively, motor braking circuits is then connected with motor reversal control circuit, and overvoltage crowbar is then connected with wantonly two live wires of the power line of the first motor (6).
2. the motor fast braking formula carbon roasting furnace discharge device based on voltage protection according to claim 1, it is characterized in that, described overvoltage crowbar is by three terminal regulator U3, amplifier P1, amplifier P2, triode VT5, triode VT6, triode VT7, positive pole is connected with the IN pin of three terminal regulator U3, the electric capacity C8 that negative pole is then connected with the base stage of triode VT6 after resistance R8, be serially connected in the resistance R9 between the colelctor electrode of triode VT6 and the positive pole of amplifier P2, N pole is connected with the negative pole of amplifier P2, the Zener diode D9 of P pole ground connection, be serially connected in the resistance R11 between the base stage of triode VT5 and the output of amplifier P2, be serially connected in the resistance R10 between the output of amplifier P1 and the base stage of triode VT7, positive pole is connected with the OUT pin of three terminal regulator U3, the electric capacity C9 that negative pole is then connected with the positive pole of amplifier P1, N pole is connected with the OUT pin of three terminal regulator U3, the diode D10 that P pole is then connected with the colelctor electrode of triode VT7, and form with the relay K 3 that diode D10 is in parallel, the positive pole of described electric capacity C8 is also connected with a wherein live wire of the power line of the first motor (6), and its negative pole is then connected with another live wire of the power line of the first motor (6), the emitter stage of described triode VT6 is connected with the negative pole of amplifier P1, the colelctor electrode of described triode VT5 is connected with the base stage of triode VT7, its grounded emitter, the grounded emitter of described triode VT7, the normally-closed contact K3-1 of described relay K 3 is then arranged on motor and rotates forward in control circuit, the GND pin ground connection of described three terminal regulator U3.
3. the motor fast braking formula carbon roasting furnace discharge device based on voltage protection according to claim 2, is characterized in that, described motor rotates forward control circuit and comprises button SB1 and contactor KM1; Described motor reversal control circuit comprises button SB2 and contactor KM2; The input of described button SB1 is connected with L3 phase firewire, and its output is then connected with L2 phase firewire after the normally-closed contact K3-1 of relay K 3 through contactor KM1 in turn; The input of described button SB2 is connected with the input of button SB1, and its output is then connected with the output of contactor KM1 after contactor KM2; Normally opened contact KM1-1 and KM2-1 of described contactor KM1 and contactor KM2 is all arranged on the power line of the first motor (6), and parallel with one another.
4. the motor fast braking formula carbon roasting furnace discharge device based on voltage protection according to claim 3, it is characterized in that, described motor braking circuits is by transformer T, be arranged on the inductance coil L1 on the former limit of transformer T, be arranged on inductance coil L2 and the inductance coil L3 of transformer T secondary, the first control circuit be connected with inductance coil L2, and the second control circuit be connected with inductance coil L3 forms; The Same Name of Ends of described inductance coil L1 is connected with the input of button SB1, its non-same polarity is then connected with the output of contactor KM1.
5. the motor fast braking formula carbon roasting furnace discharge device based on voltage protection according to claim 4, it is characterized in that, described first control circuit is by diode rectifier U1, triode VT3, the electric capacity C4 that positive pole is connected with the cathode output end of diode rectifier U1, negative pole is then connected with the base stage of triode VT3 after resistance R6; The electric capacity C5 that positive pole is connected with the positive pole of electric capacity C4, negative pole is then connected with the emitter stage of triode VT3; The diode D5 that N pole is connected with the colelctor electrode of triode VT3, P pole is then connected with the cathode output end of diode rectifier U1 after the normally opened contact KM1-2 of contactor KM1; The relay K 1 that input is connected with the positive pole of electric capacity C4, output is then connected with the emitter stage of triode VT3 after the normally-closed contact KM1-3 of contactor KM1; And the diode D6 that N pole is connected with the positive pole of electric capacity C4, P pole is then connected with the emitter stage of triode VT3 forms; The base stage of described triode VT3 is connected with the P pole of diode D5; The non-same polarity of described inductance coil L2 is connected with an input of diode rectifier U1, its Same Name of Ends is then connected with another input of diode rectifier U1; The normally opened contact K1-1 of described relay K 1 is then in parallel with button SB2.
6. the motor fast braking formula carbon roasting furnace discharge device based on voltage protection according to claim 5, it is characterized in that, described second control circuit is by diode rectifier U2, triode VT4, the electric capacity C6 that positive pole is connected with the cathode output end of diode rectifier U2, negative pole is then connected with the base stage of triode VT4 after resistance R7; The electric capacity C7 that positive pole is connected with the positive pole of electric capacity C6, negative pole is then connected with the emitter stage of triode VT4; The diode D7 that N pole is connected with the colelctor electrode of triode VT4, P pole is then connected with the cathode output end of diode rectifier U2 after the normally opened contact KM2-2 of contactor KM2; The relay K 2 that input is connected with the positive pole of electric capacity C6, output is then connected with the emitter stage of triode VT4 after the normally-closed contact KM2-3 of contactor KM2; And the diode D8 that N pole is connected with the positive pole of electric capacity C6, P pole is then connected with the emitter stage of triode VT4 forms; The base stage of described triode VT4 is connected with the P pole of diode D7; The non-same polarity of described inductance coil L3 is connected with an input of diode rectifier U2, its Same Name of Ends is then connected with another input of diode rectifier U2; The normally opened contact K2-1 of described relay K 2 is then in parallel with button SB1.
7. the motor fast braking formula carbon roasting furnace discharge device based on voltage protection according to claim 6, it is characterized in that, described three-phase power supply phase sequence protection circuit is by diode rectifier U, triode VT1, triode VT2, positive pole is connected with the L2 phase firewire of the power line of the second motor (8), the electric capacity C1 that negative pole is then connected with the L1 phase of the power line of the second motor (8) after resistance R1, positive pole is connected with the cathode output end of diode rectifier U after Zener diode D1, the electric capacity C2 that negative pole is then connected with the emitter stage of triode VT2 after diode D3, one end is connected with the positive pole of electric capacity C2, the resistance R2 that the other end is then connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the piezo-resistance R3 that the other end is then connected with the cathode output end of diode rectifier U, N pole is connected with the colelctor electrode of triode VT1, the diode D2 that P pole is then connected with the cathode output end of diode rectifier U, be serially connected in the electric capacity C3 between the base stage of triode VT1 and the base stage of triode VT2, be serially connected in the resistance R4 between the emitter stage of triode VT1 and the colelctor electrode of triode VT2, N pole is connected with the emitter stage of triode VT1, the diode D4 that P pole is then connected with the negative pole of electric capacity C2 after resistance R5, the relay K be in parallel with diode D4 forms, the normally opened contact K-1 of described relay K is then serially connected on the power line of the second motor (8), and an input of described diode rectifier U is connected with the L3 phase firewire of the power line of the second motor (8), its another input is then connected with the negative pole of electric capacity C1.
8. the motor fast braking formula carbon roasting furnace discharge device based on voltage protection according to claim 7, it is characterized in that, described three terminal regulator U3 is 7812 type voltage stabilizing chips.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510786052.0A CN105403053A (en) | 2015-11-16 | 2015-11-16 | Discharging device based on voltage protection and used for motor quick braking type carbon baking furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510786052.0A CN105403053A (en) | 2015-11-16 | 2015-11-16 | Discharging device based on voltage protection and used for motor quick braking type carbon baking furnace |
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| CN201510786052.0A Withdrawn CN105403053A (en) | 2015-11-16 | 2015-11-16 | Discharging device based on voltage protection and used for motor quick braking type carbon baking furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4008884A (en) * | 1976-06-17 | 1977-02-22 | Alcan Research And Development Limited | Stirring molten metal |
| CN2080659U (en) * | 1990-09-06 | 1991-07-10 | 柳祖翼 | Mechano-electronic weighing apparatus |
| CN201932712U (en) * | 2010-12-29 | 2011-08-17 | 洛阳震动机械有限公司 | Suction feeder for fillers used in roasting of carbon blocks |
| CN203443356U (en) * | 2013-07-10 | 2014-02-19 | 中国铝业股份有限公司 | Material sucking device for carbon roaster |
| CN204035519U (en) * | 2014-06-20 | 2014-12-24 | 江苏神马电力股份有限公司 | Slag-draining device |
-
2015
- 2015-11-16 CN CN201510786052.0A patent/CN105403053A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4008884A (en) * | 1976-06-17 | 1977-02-22 | Alcan Research And Development Limited | Stirring molten metal |
| CN2080659U (en) * | 1990-09-06 | 1991-07-10 | 柳祖翼 | Mechano-electronic weighing apparatus |
| CN201932712U (en) * | 2010-12-29 | 2011-08-17 | 洛阳震动机械有限公司 | Suction feeder for fillers used in roasting of carbon blocks |
| CN203443356U (en) * | 2013-07-10 | 2014-02-19 | 中国铝业股份有限公司 | Material sucking device for carbon roaster |
| CN204035519U (en) * | 2014-06-20 | 2014-12-24 | 江苏神马电力股份有限公司 | Slag-draining device |
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Application publication date: 20160316 |