CN2460230Y - Power device of multifunctional self-regualtion high-voltage electrostatic dust remover - Google Patents

Power device of multifunctional self-regualtion high-voltage electrostatic dust remover Download PDF

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CN2460230Y
CN2460230Y CN 01202606 CN01202606U CN2460230Y CN 2460230 Y CN2460230 Y CN 2460230Y CN 01202606 CN01202606 CN 01202606 CN 01202606 U CN01202606 U CN 01202606U CN 2460230 Y CN2460230 Y CN 2460230Y
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circuit
voltage
resistance
integrated circuit
silicon
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CN 01202606
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马崇伟
马立志
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Abstract

The utility model provides a power supply device of a multifunctional automatic regulated high-voltage electrostatic dust remover. The voltage of an industrial frequency AC power supply is regulated and raised by a controlled silicon controlled main circuit which is composed of a bidirectional controlled silicon, a reactor and a step-up transformer; the industrial frequency AC power supply is connected with a silicon rectifier type high-voltage rectification circuit to output a DC high voltage of 0KV to 150KV, and is then connected with electrodes of a dust remover. The controlled silicon of the main circuit is connected with a pulse forming circuit; the voltage regulating and pulse forming circuit of the controlled silicon and the high-voltage rectification circuit are connected with a comprehensive protective circuit. The comprehensive protective circuit is connected with an automatic start circuit and a voltage reducing, rectifying and voltage stabilizing circuit. The utility model has novel structure, high efficiency, and safe and convenient use.

Description

Multi-functional self-adjustable high-voltage electrostatic dust separator supply unit
The utility model relates to a kind of supply unit of high-voltage electrostatic dust separator, is applicable to the high-voltage electrostatic dust separator that separates diffusing particle by electrostatic effect from gas.
In known technology, existing high-voltage electrostatic dust separator is to produce corona discharge by its supply unit, makes in the gas dust enclose electric charge, under the electrostatic attraction effect, is gathered in the crops by collecting electrode, to reach the purpose of dedusting.The supply unit of normally used high-voltage electrostatic dust separator mainly is the external power supply that adopts 220 volts of industrial frequency ACs or 380 volts, after buck rectifier becomes low-voltage DC, through oscillating circuit, voltage doubling rectifing circuit output dc high-voltage, connect the sparking electrode and the collecting electrode of deduster again.Because this supply unit conversion efficiency is low, power output is little, and the output voltage instability, can not protects effectively when especially in high pressure and low-voltage circuit, high pressure, overcurrent occurring, and influence the operate as normal of device.
The purpose of this utility model provides a kind of improved high-voltage electrostatic dust separator supply unit; make the voltage of its output be in stable efficient state; realizing preferable transform effect, and can protect automatically when in circuit, over-voltage and over-current occurring, realize that deduster works safely and efficiently.
For achieving the above object, technical solution adopted in the utility model is: with the external power supply of 220 volts of industrial frequency ACs or 380 volts, after the SCR control main circuit pressure regulation of forming via bidirectional triode thyristor, reactor and step-up transformer is boosted earlier, obtain stable dc high-voltage by the rectification of silicon rectifier formula high-voltage rectifier again, output connects the sparking electrode and the collecting electrode of deduster again.And the silicon-controlled voltage regulation pulse shaping circuit that is used in silicon-controlled voltage regulation time control voltage rising speed degree will have been connected on the controllable silicon in the main circuit; and the company of establishing the high pressure overvoltage; overcurrent and low pressure overvoltage; the general protective circuit of overcurrent; general protective circuit connects high-voltage rectifier and silicon-controlled voltage regulation pulse shaping circuit respectively; the automatic main circuit that starts after also having connected automatic starting circuit on the general protective circuit to be used for this supply unit connection external AC power supply; also the company of establishing the step-down rectifier voltage stabilizing circuit external AC power supply exported 12 volts of DC power supply connect the silicon-controlled voltage regulation pulse shaping circuit respectively after the step-down rectifier voltage stabilizing; general protective circuit and automatic starting circuit, the multi-functional self-adjustable high-voltage electrostatic dust separator supply unit that consists of.
Since this practical employing silicon-controlled voltage regulation and transformer boosts, silicon rectifier is formed high-pressure electrostatic translation circuit, the especially company of establishing silicon-controlled voltage regulation pulse shaping circuit, general protective circuit and automatic starting circuit.Through testing on probation showing; it is big to the utlity model has novel structure, ash removal efficiency height, power regulating range; can when appearring in device, high pressure overvoltage, overcurrent and low pressure overvoltage, overcurrent protect automatically and multiple function such as indication; advantages such as safe in utilization, simple and convenient operation and maintenance are applicable to the high-voltage electrostatic dust separator of cement, metallurgy, chemical industry, power plant, coal fired boiler etc.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is the block diagram of the utility model supply unit.
Fig. 2 is the basic circuit diagram of the utility model embodiment.
As accompanying drawing 1, shown in Figure 2, the utility model comprises: step-down rectifier voltage stabilizing circuit (1), silicon-controlled voltage regulation pulse shaping circuit (2), SCR control main circuit (5), high-voltage rectifier (6), general protective circuit (4) and automatic starting circuit (3).Step-down rectifier voltage stabilizing circuit (1) is connected the external power supply of 220 volts of industrial frequency ACs or 380 volts with SCR control main circuit (5), main circuit (5) connects the high voltage direct current of high-voltage rectifier (6) the output 0-150KV of high voltage silicon stack with external AC power supply again by bidirectional thyristor for regulating voltage after reactor to step-up transformer boosts, connected the sparking electrode and the collecting electrode of high-voltage electrostatic dust separator electric field again by the high-voltage DC power supply line.The pulse shaping circuit (2) that on the pressure regulation controllable silicon of main circuit (5), connects control controllable silicon conducting degree; carry out the overvoltage of this supply unit high pressure; overcurrent and low pressure overvoltage; the overcurrent general protective circuit (4) of protection automatically connects high-voltage rectifier (6) and silicon-controlled voltage regulation pulse shaping circuit (2) respectively; automatically the automatic starting circuit (3) that starts main circuit after this supply unit is connected external AC power supply connects general protective circuit (4), and step-down rectifier voltage stabilizing circuit (1) will connect the external AC power supply of importing and export 12 volts direct current connect silicon-controlled voltage regulation pulse shaping circuit (2) respectively after the step-down rectifier voltage stabilizing; general protective circuit (4) and automatic starting circuit (3).
The circuit composition concrete with reference to accompanying drawing 2 embodiment is connected to:
SCR control main circuit (5) is by bidirectional triode thyristor KS, reactor HL, step-up transformer B 4With ammeter A, A.C. contactor CJ 1, indicator light ZD 1-2, protective tube BX forms, controllable silicon KS-end line connects external AC power supply, another end line connects reactor HL, reactor HL connects step-up transformer B 4Primary coil, transformer B 4Connect external AC power supply behind another end line series current Table A of primary coil, the protective tube BX and form the loop.
High-voltage rectifier (6) is by step-up transformer B 4, high voltage silicon stack D 23-26And resistance R 43-46Form step-up transformer B 4The output line of secondary coil connects high voltage silicon stack D 23-26, high voltage silicon stack D 23-26With step-up transformer B 4Power supply after boosting carries out exporting the direct current of 0～150KV via current-limiting resistance R after the rectification 46The electrode that connects deduster, resistance R 23-25For divider resistance connects high voltage silicon stack D 23-26
Silicon-controlled voltage regulation pulse shaping circuit (2) is by integrated circuit (IC) 1, resistance R 3-18, adjustable resistance W 1-2, diode D 5-7, triode BG 1-2, capacitor C 2-3With transformer B 2Form, synchronizing signal is by divider resistance R 5-6After the dividing potential drop again through company triode BG 1Be connected in integrated circuit (IC) after the amplification 1, to integrated circuit (IC) 1Synchronizing signal is provided; The size of control signal is by resistance R 3-4With adjustable resistance W 2Form the bleeder circuit adjustable resistance W that connects again 1After be connected in integrated circuit (IC) 13 pin; By resistance R 10-12, capacitor C 2And integrated circuit (IC) 1Consist of pulse shaping circuit; By integrated circuit (IC) 1The current-limiting resistance R of output 5 pin through being connected 14, pulse transformer B 2, diode D 7The back connects the controllable silicon KS of main circuit (5); By triode BG 2, resistance R 15-17, capacitor C 3Connect direct current relay J 2Normally-closed contact J 2-1With A.C. contactor CJ 1Normally-closed contact CJ 1-4Form delay circuit, the speed degree that control voltage rises during in order to the controllable silicon automatic Regulation.
General protective circuit (4) is by integrated circuit (IC) 3, resistance R 23-38, adjustable resistance W 3-7, capacitor C 7-11, diode D 10-22, triode BG 3-7, current transformer H, transformer B 3With direct current relay J 3Institute connects to form.By resistance R 23-24The composition bleeder circuit obtains the 6V DC power supply and is connected in integrated circuit (IC) 314 pin; By resistance R 36-37, adjustable resistance W 3With triode BG 3Form secondary (high pressure) current sampling protective circuit and be connected in integrated circuit IG 3The protection control signal is provided; By resistance R 30-32With triode BG 4-5Form secondary (high pressure) voltage sampling protective circuit and be connected in integrated circuit (IC) 3The protection control signal is provided; By the current transformer H, the diode D that connect external AC power supply 15-18, resistance R 25-26, adjustable resistance W 4And capacitor C 10Connect to form once (low pressure) current sampling protective circuit and be connected in integrated circuit (IC) 3The protection control signal is provided; By the transformer B that connects external AC power supply 3, diode D 19-22, capacitor C 11, resistance R 38-39With adjustable resistance W 5Connect to form to (low pressure) voltage sampling protective circuit once and be connected in integrated circuit (IC) 3The protection control signal is provided; By diode D 12-44, resistance R 32-35, capacitor C 8, triode BG 7And relay J 3Connect to form the trip protection circuit, be used for when frequent movement appears in this protective circuit, cutting off automatically main circuit power; Light-emitting diode D 10-11Be the protection indication.
Automatic starting circuit (3) is by push-button switch AN, direct current relay J 1-2, controllable silicon MCR, diode D 8-9, resistance R 19-22, capacitor C 4-6And integrated circuit (IC) 2The automatic time delay circuit that connects to form starts main circuit automatically in order to after connecting external AC power supply at this supply unit.
Step-down rectifier voltage stabilizing circuit (1) is by the power transformer B that connects external AC power supply 1, diode D 1-4, capacitor C 1RW forms with three terminal regulator, and external AC power supply is earlier by transformer B 1Step-down is through diode D 1-4Rectification, capacitor C 1Filtering, again through 12 volts direct currents of three terminal regulator RW voltage stabilizing output, power to the silicon-controlled voltage regulation pulse shaping circuit (2) that is connected, automatic starting circuit (3) and general protective circuit (4) respectively.
Integrated circuit (IC) among accompanying drawing 2 embodiment in the silicon-controlled voltage regulation pulse shaping circuit (2) 1And the integrated circuit (IC) in the general protective circuit (4) 3Be NE556, the integrated circuit (IC) in the automatic starting circuit (3) 2Be NE555.Certainly, these 3 integrated circuit (IC) 1-3Also can adopt the integrated circuit of other model.

Claims (3)

1; a kind of supply unit of multi-functional self-adjustable high-voltage electrostatic dust separator; it comprises the step-down rectifier voltage stabilizing circuit; it is characterized in that also comprising by bidirectional triode thyristor KS; reactor HL; step-up transformer B4 is formed exchanges 220 volts of power frequencies or 380 volts external power supply is carried out rectification output 0-150KV high voltage direct current again after reactor is connected to SCR control main circuit (5) that step-up transformer boosts and power supply boosted by transformer by bidirectional thyristor for regulating voltage silicon rectifier formula high-voltage rectifier (6); and at the last silicon-controlled voltage regulation pulse shaping circuit (2) that connects control controllable silicon conducting degree of the high-voltage thyristor KS of main circuit (5); be connected the high pressure overvoltage at high-voltage rectifier (6) with silicon-controlled voltage regulation pulse shaping circuit (2); overcurrent and low pressure overvoltage; the overcurrent general protective circuit (4) of protection automatically also is being connected with the automatic starting circuit (3) that starts main circuit (5) after device is connected external AC power supply automatically on the general protective circuit (4), the step-down rectifier voltage stabilizing circuit is that the interchange external power supply that will connect input connects silicon-controlled voltage regulation pulse shaping circuit (2) respectively through the step-down rectifier voltage stabilizing circuit (1) of 12 volts of DC power supply of step-down rectifier voltage stabilizing output; general protective circuit (4) and automatic starting circuit (3).
2, high-voltage electrostatic dust separator supply unit according to claim 1 is characterized in that:
A. high-voltage rectifier (6) connects high voltage silicon stack D by step-up transformer B4 23-26And resistance R 43-46Form, the output line of transformer B4 secondary coil connects high voltage silicon stack D 23-26, high voltage silicon stack D 23-26On be connected with current-limiting resistance R respectively 46With divider resistance R 23-25,
B. silicon-controlled voltage regulation pulse shaping circuit (2) is by integrated circuit (IC) 1, resistance R 3-18, adjustable resistance W 1-2, diode D 5-7, triode BG 1-2, capacitor C 2-3With transformer B 2Form, to integrated circuit (IC) 1What synchronizing signal was provided is by divider resistance R 5-6, connect amplifying triode BG 1After connect integrated circuit (IC) again 1Form, the control signal size be by resistance R 3-4With adjustable resistance W 2Form the bleeder circuit adjustable resistance W that connects again 1The back connects integrated circuit (IC) 1Form, by resistance R 10-12, capacitor C 2And integrated circuit (IC) 1Consist of pulse shaping circuit, by triode BG 2, resistance R 15-17, capacitor C 3Connect direct current relay J 2Normally-closed contact J 2-1With A.C. contactor CJ 1Normally-closed contact CJ 1-4Consist of the delay circuit of control voltage rising speed degree when the controllable silicon automatic Regulation, integrated circuit (IC) 1Output 5 pin by the current-limiting resistance R that is connected 14, pulse transformer B 2, diode D 7The back connects the controllable silicon KS of main circuit (5),
C. general protective circuit (4) is by integrated circuit (IC) 3, resistance R 23-33, adjustable resistance W 3-7, capacitor C 7-11, diode D 10-22, triode BG 3-7, current transformer H, transformer B 3With direct current relay J 3Form, by resistance R 23-24Form bleeder circuit and be connected in integrated circuit (IC) 3, by resistance R 36-37, adjustable resistance W 3With triode BG 3Form secondary (high pressure) current sampling protective circuit and be connected in integrated circuit (IC) 3, by resistance R 30-32With triode BG 4-5Form secondary (high pressure) voltage sampling protective circuit and connect integrated circuit (IC) 3, by connecting current transformer H, the diode D that exchanges external power supply 15-18, resistance R 25-26, adjustable resistance W 4And capacitor C 10Connect to form once (low pressure) current sampling protective circuit and be connected in integrated circuit (IC) 3, by connecting the transformer B that exchanges external power supply 3, diode D 19-22, capacitor C 11, resistance R 38-39With adjustable resistance W 5Connect to form to (low pressure) voltage sampling protective circuit once and be connected in integrated circuit (IC) 3, by diode D 12-14, resistance R 32-35, capacitor C 8, triode BG 7And relay J 3Connect to form the trip protection circuit that when frequent movement appears in this protective circuit, cuts off main circuit power automatically, light-emitting diode D 10-11Be the protection indication,
D. automatic starting circuit (3) is by push-button switch AN, direct current relay J 1-2, controllable silicon MCR, diode D 8-9, resistance R 19-22, capacitor C 4-6And integrated circuit (IC) 2The automatic time delay circuit that after connecting external AC power supply, starts main circuit automatically that connects to form.
3, high-voltage electrostatic dust separator supply unit according to claim 2 is characterized in that integrated circuit (IC) in the silicon-controlled voltage regulation pulse shaping circuit (2) 1And the integrated circuit (IC) in the general protective circuit (4) 3Be NE556, the integrated circuit (IC) in the automatic starting circuit (3) 2Be NE555.
CN 01202606 2001-01-15 2001-01-15 Power device of multifunctional self-regualtion high-voltage electrostatic dust remover Expired - Fee Related CN2460230Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01202606 CN2460230Y (en) 2001-01-15 2001-01-15 Power device of multifunctional self-regualtion high-voltage electrostatic dust remover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01202606 CN2460230Y (en) 2001-01-15 2001-01-15 Power device of multifunctional self-regualtion high-voltage electrostatic dust remover

Publications (1)

Publication Number Publication Date
CN2460230Y true CN2460230Y (en) 2001-11-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01202606 Expired - Fee Related CN2460230Y (en) 2001-01-15 2001-01-15 Power device of multifunctional self-regualtion high-voltage electrostatic dust remover

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