TW436327B - Circuit for pulse energized electrostatic precipitator and electrostatic precipitator - Google Patents

Abstract

The subject of this invention is to provide a kind of circuit for electrostatic precipitator that can generate a pulse waveform suitable for use in pulse energized electrostatic precipitator. The electrostatic precipitator circuit has an input terminal, an output terminal connected to a precipitating electrode, a storage capacitor connected between ground potential and the input terminal, and a recovery capacitor whose one electrode is applied with ground potential. The circuit further includes a current path switching unit having a common terminal and first and second switch terminals to be connected to the common terminal, the common terminal being connected to a non-ground electrode of the storage capacitor. The circuit further includes a first current path having a serial circuit of an inductor and a diode for connecting the first switch terminal to the output terminal, a second current path having a serial circuit of an inductor and a diode for connecting the output terminal to the non-ground electrode of the recovery capacitor, and a third current path having a serial circuit of an inductor and a diode for connecting the non-ground electrode of the recovery capacitor to the second switch terminal.

Description

436327 A7 _B7 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to an electric dust collector, and more particularly to a pulsed electric dust collector. The pulse collection method of the electric dust collector has a great effect on the miniaturization of the dust collector. However, a pulsed current collector is generally expensive. In particular, when the body of the dust collector is below the middle scale * the cost of the dust collector body is not too high, and the advantages generated by the miniaturization of the dust collector body are mostly eliminated by the disadvantage of the rising cost of the power collection device * Therefore, it is expected to reduce Cost of pulse current collector β [Conventional technology] As a pulse power source for an electric dust collector, there are known a semiconductor device using a sluice fluid or the like as an exchange element, and a person using a rotating electrical gap. Fig. 5 shows a pulse power supply using a rotating electric flower gap according to the prior art, Fig. 5 (A) shows a circuit configuration, and Fig. 5 (B) shows its electrical characteristics. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the notes on the back before filling out this page). In Figure 5 (A), the transformer that supplies AC current from the AC power source and the diode bridge A direct current power source DC is formed. The anode of the DC power source DC is grounded, and the cathode is connected to one of the rotating poles R S G3 through the impedance Z. The connection point between the impedance Z and the rotating flower gap R S G3 is one of the electrodes of the storage capacitor cs. The other electrode of the storage capacitor cs is grounded. The rotating electrical gap RSG3 is between the stationary electrode and the rotating electrode-this paper size is applicable _ country and country standard ((: & > 8 4 specifications (210 '/; 297 mm))-4-Central Ministry of Economic Affairs 橾Printed by quasi-station Shellfish Consumer Cooperative 436327 A7 __B7 V. Description of the invention (2) For those who form electrical gaps, the rotating electrode is driven by the motor M. The other side of the rotating electrical gap RS G3 is the static electrode * impedance L One of the electrodes connected to the dust collector electrode EP (called the discharge electrode). The other electrode of the dust collector electrode EP (called the dust collector) is grounded. When the rotating electrical gap RSG is turned on, the storage capacitor Cs, Impedance Li. And the LC resonance circuit formed by the dust collector EP. "By the negative charge stored in the capacitor Cs, a resonance current is excited in this LC resonance circuit. * 5 (B) shows the 5 (A) 圚The characteristics of the shown rotating electrical gap-type pulsed power supply * In the figure, the horizontal axis represents time t and the vertical axis represents the negative voltage of the dust collector electrode EP. During the conduction of the rotating electrical gap RSG, the excitation in the LC resonance circuit has inherent Resonance frequency In the characteristics shown in the figure, the coefficient during the vibration period is 100 / s, and several cycles of vibration occur during this period. When the rotating electrical gap RSG 3 becomes non-conducting, the LC resonance circuit does not flow and resonate. The current stops vibration. At this time, the voltage remaining on the dust collector electrode EP is above the corona start voltage, the charge stored in the dust collector electrode EP is reduced by electric discharge, and the negative pressure index of the dust collector electrode EP is reduced as a function. As described above, the rotary electric gap pulse power system constituted by the circuit of the fifth (A) cannot form a single-shot pulse waveform, and until the rotary electric gap becomes non-conducting, it can only form a multi-pulse waveform with a number of periodic component vibrations. This paper size applies Chinese National Standard (CNS) A4 specification (2ί〇 × 297 mm) --- Γ ------- (^-(Please read the precautions on the back before filling this page) Order 43632 7 A7 B7 V. Description of the Invention (3) The voltage waveform of the electric dust collector is expected to be called a single-shot _ punch shape ---------..... ~ ... Certain negative sign of base voltage during other periods-, table ------------— '-一 \ 一. ~. The voltage waveform shown in Figure 5 (B) is not suitable as a pulse waveform for electric dust collectors * Figure 5 (C) Shows an electronic circuit that can be used to replace the gate fluid and diode of the rotating electrical gap RS G3 in Fig. 5 (A). This circuit is composed of the gate fluid S ^ and the diode D 1Q connected in antiparallel. 》 S i. It is actually constructed to be able to withstand 髙 voltage and connect many gate fluid elements in series. When the gate fluid S10 is turned on, the resonance current * current is excited in the LC resonance circuit in the same way as in the case of the fifth (Α) 囵. After flowing to the positive direction of the gate fluid Si, current flows to the clockwise direction of the diode D10. When the gate fluid Si0 is rendered non-conductive while a current is flowing through the diode D10, the resonant current system flows only about one period component, and then does not flow. Seals of the Bayer Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) However, in fact, most of the sluice fluid components constituting the sluice fluid S10 may become non-conducting, and the overall resistance to high All the voltage 'results' have to be turned on * results, and actually the same vibration waveform as that shown in Fig. 5 (B) appears. In addition, the thyristor system is more expensive than the rotating flower gap. Fig. 6 is a circuit diagram of an electric dust collector disclosed in Japanese Patent Gazette No. Hei 6-3 4 3 8 9 8 by the inventor of the present invention to solve the above problems. A diode D12 is inserted in series with the rotating electrical gap RS G4, and a series circuit formed by the diode D12 connected in parallel to the rotating electrical gap RS G4 is connected to a diode D in a direction opposite to the diode D 12 13. This paper size is applicable to China National Sample Standard (CNS) A4 (210X297mm) -6-436327 Printed by the Consumer Cooperatives of the Central Sample Bureau of the Ministry of Economic Affairs A7 _._ B7 _ _ V. Description of the invention (4) The connection between the diode 〇12 and 013 ′ is thus caused by the excited resonant current flowing in the diode D 12 ′ during its half period and the other half periodic current flowing in the diode D 13. The resonant current flows through the diode D13. During the half-cycle period, no current flows in the rotating electric flower gap RS G4. At this time, the electric flower plasma generated in the rotating electric flower gap RS G4 will be destroyed. Spraying is also possible in the gap part where the electric plasma is generated. [Problems to be Solved by the Invention] Since the circuit structure shown in FIG. 6 is adopted, the rotating electric flower gap RS can be turned into a non-conducting state at the time when the half-cycle component of the resonance current flows. However, when the vibration generated by the LC resonance circuit generates a forward voltage for the diode D12, the arc rotation revolving gap RS G4 will be re-excited. In order to prevent the re-excitation arc, a second will be generated for the diode D12. Directional voltage_ Previously, it was sufficient to rotate the rotating electrode of the rotating electrical gap RS G4 to a sufficient angle so that the length of the electrical gap was not generated. One way to solve this problem is to increase the speed of the front end of the rotating electrode to more than several hundred m / s. Means used for the problem] According to an aspect of the present invention, a circuit for an electric dust collector is provided, which includes an input terminal to which a DC voltage is applied, an output terminal connected to an electrode of the dust collector, and one of the electrodes is grounded. Potential 'The other electrode is connected to the storage capacitor of the above input terminal, and the recycling capacitor to which one of the electrodes is given a ground potential, and has a common (please read the precautions on the back before filling this page) This paper size applies China National Ladder Standard (<: Ns) A4 specification (2 丨 0X297 mm) — 7-43 63 2 7 A7 B7 V. Description of the invention (5) Contact, the first contact and the second contact current circuit Conversion means; having a first conduction state connecting the common contact and the first contact; a second conduction state connecting the common contact and the second contact; and The common contact is not connected to any of the first and second contacts in a neutral state, and the common contact is connected to the current path conversion means of the non-ground electrode of the storage capacitor, and includes the first inductor and the first It is constituted by a series circuit of one diode, a first current path * connecting the first contact and the output terminal, and a series circuit including a second inductor and a second diode, and connecting the output terminal and the above The non-ground electrode of the recovery capacitor, the second current path of the second birch body with the polarity of the electrode on the output terminal side being the opposite of the polarity of the first diode, and the third inductor and the third diode The series connection circuit of the body is used to connect the non-ground electrode of the recovery container to the second contact. The polarity of the electrode on the recovery capacitor side of the third diode is opposite to the polarity of the second diode. 3rd current circuit. Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). The storage capacitor is charged through the input terminal. When the current path switching means is brought into the first conduction state, a charge is transferred from the storage capacitor via the first current path to the dust collector electrode connected to the output terminal. Since the first diode is connected to the first current path, the charge flowing into the electrode of the dust collector does not flow back to the storage capacitor side. The charge stored in the electrode of the dust collector is moved to the recovery capacitor via the second current path. Since the second and second diodes are connected to the second current path, the charge stored in the recovery capacitor will not flow back to the dust collector's electrode side. During the period when current is not flowing in the first current circuit, the current circuit switching means is adopted. The paper size is in accordance with Chinese national standard (CNS > M specification (210X297 mm)) 8 43 63 2 7 Α7 Β7 Employee Consumer Cooperative Cooperative Policy V. Invention Description (6) is neutral. Then, make the gap between the contacts in the first conduction state and wait until the possibility of re-excitation arc is gone. Wait until it opens. • When the current path conversion means becomes In the second conduction state, the charge stored in the recovery capacitor is returned to the storage capacitor through the second current path. Since the third diode is connected to the third current path, the charge returned to the storage capacitor does not flow back to the recovery capacitor. According to another aspect of the present invention, there is provided a circuit for an electric collector, which is characterized by having an input terminal to which a DC voltage is applied, and an output terminal connected to an electrode of a dust collector, and one of the electrodes is grounded. Potential, a storage capacitor with the other electrode connected to the above-mentioned input terminal, and a recovery capacitor giving ground potential to one of the electrodes * and Including switching means * A series circuit composed of a first inductor and a first diode, a first current path connecting the non-ground electrode of the storage capacitor and the output terminal, and a second inductor and a second diode The second current path is formed by a series circuit that connects the output terminal and the non-ground electrode of the recovery capacitor, and the polarity of the electrode on the output terminal side of the second diode is opposite to the polarity of the first diode. And the resistor connected in parallel to the above-mentioned second diode. The storage capacitor is charged via the input terminal. When the switching means is closed, the charge charged in the storage capacitor * moves to the output terminal via the first current path The dust collector electrode "the charge flowing into the dust collector electrode" is not reversed to the storage capacitor, but is fixed in the recovery capacitor via the second current path. * The charge recovered in the capacitor leaks to the dust collector electrode through the resistor every time. The leakage current is the electrostatic container of the charging dust collector (Please read the precautions on the back before filling this page) ((: Can) Xu Specification 4 210 {\ 297 mm) -9--436327 Ministry of Economic Affairs Bureau of Standards negative consumer cooperative work plate A7 _____B7__ five bags, the invention described (7) slowly rises absolute value of the precipitator voltage. On the one hand, since the corona discharge is generated at the electrode of the dust collector, the voltage of the dust collector is a voltage that the leakage current and the corona current become balanced. According to another aspect of the present invention, an electric dust collector is provided, which is characterized by: The control signal converts the DC power supply in the voltage output state and the non-output state, and the dust collector electrode to which one of the electrodes is given a ground potential, the ground electrode to which one of the electrodes is given a ground potential, and the other electrode to which the DC power supply is given. A storage capacitor for an output voltage, and a recovery capacitor for giving a ground potential to one of the electrodes, and a current path conversion means having a common contact, a first contact, and a second contact; having a connection between the common contact and the first The first conductive state of the 1 contact, the second conductive state of connecting the common contact and the second contact, and the neutral state of the common contact not connected to any of the first and second contacts, and The above-mentioned current path conversion means in which the common contact is connected to a non-ground electrode of the storage capacitor, and includes a first inductor The first diode is composed of a series circuit, the first current path connecting the first contact and the non-ground electrode of the dust collector electrode, and the series circuit including the second inductor and the second diode is connected and connected The non-grounded electrode of the dust collector electrode and the non-grounded electrode of the recovery capacitor, the second current path of the second diode on the output terminal side has a polarity opposite to that of the first diode, and includes: The third inductor and the third diode constitute a series circuit. The non-ground electrode of the recovery capacitor and the second contact are connected. The polarity of the electrode on the recovery capacitor side of the third diode is the same as that of the second diode. -This paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm) {锖 read the note on the back before filling in this page) 436327 A7 B7 Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (8) The third current path of the opposite polarity of the polar body. After the output voltage of the DC power source is turned into the non-output state, the current path switching means is turned into the first conduction state. When the current path switching means is turned into the first conduction state, the storage capacitor is passed through the dust collector electrode. After the half-period component of the resonant frequency of the LC resonant circuit formed by the first current path, the current path conversion means is turned into a neutral state, and when the current path is converted into a neutral state, it is passed through the dust collector. After the electrodes, the recovery capacitor, and the harmonic frequency of the LC resonance circuit formed by the second 罨 flow path are separated by about half a period, the current path conversion means is changed to the second conduction state over time, and then the above Control means for the output power E of the DC power supply to be in an output state "[Embodiment of the invention] Fig. 1 (A) shows a circuit configuration of an electric dust collector circuit, a peripheral circuit and a dust collecting electrode according to the first embodiment of the present invention. 》 DC power supply DC consists of transformer and secondary winding diode bridge connected to the transformer to make. The primary winding of the transformer is connected to the AC power source through the gate fluid S i. The gate fluid Si is controlled by the timing control means C NT. The anode of the DC power supply DC is grounded, and the cathode is connected to the power input terminal T i η of the f_gas dust collector @ circuit PG via the inductor L i. The dust collector electrode EP of the electric dust collector is composed of electrodes facing each other, and the gas such as air to be dusted passes through the middle. One electrode (dust collector) of the collector electrode EP is grounded, and the other one's electricity _ This paper size applies to China National Standard (CMS) Α4 size (210X297 mm) (Please read the precautions on the back first (Fill in this page again) 436327 A7 B7 V. Description of the invention (9) The electrode (discharge electrode) is connected to the output terminal T of the electric dust collector circuit p G 〇 The dust collector electrode EP has a capacitance CEP «circuit for electric dust collector PG is composed of a storage capacitor Cs and a recovery capacitor CR to which one of the electrodes is grounded, and a current path connected between these capacitors or between these capacitors and the output terminal Tout. The storage capacitor Cs is connected between the input terminal T i η and the ground line, and is charged by a DC voltage applied to the input terminal T i η. The non-ground terminal of the storage capacitor Cs is connected to the movable contact T 〇. Of the switch SW. The switch SW has two fixed contacts T, T, which can be connected to the movable contact T 〇, and is controlled by the timing control means CNT. . The fixed contact T 1 of the switch SW is connected to the output terminal To u t through a series circuit of the inductor 1 ^ 1 and the diode Di. The diode Di is a direction in which a current flows from the output terminal T o u t to the switch SW as a positive direction. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs {Please read the precautions on the back before filling in this purchase) to prevent R from connecting the non-ground electrode of the storage capacitor C 3 and the output terminal To ut »The resistance value of the resistor R is about A few tens of MΩ, almost no current flows in the normal operating state. The connection point between the inductor Li and the switch SW is grounded via the diode D4. * In the normal operating state, the connection point between the inductor Li and the switch SW is a negative voltage. Therefore, the diode D 4 is not turned on. .

When the switch SW is turned to the fixed contact Tm side, an LC resonance circuit I r formed by the storage capacitor Cs, the inductor SL i and the dust collector electrode EP is formed. When the switch SW is turned to the fixed contact T 2 side, storage is formed. LC resonance circuit formed by capacitor Cs, inductor L 3 and recycling capacitor CR I This paper size is applicable to Chinese National Standard (CNS) A4 specification (21 OX297 mm), n Printed by the Consumer Cooperative of Central Provincial Bureau of the Ministry of Economic Affairs 43632 7 A7 _______B7_ 5. Description of the invention (10) In addition, the dust collector electrode EP, the inductor L2 and the recovery capacitor CrB form an LC resonance circuit i2 «storage capacitor Cs, the recovery capacitor CR and the dust collector electrode EP have approximately equal electrostatic capacitances * The impedance of the inductor L 1 is selected, for example, as an LC resonance circuit I; the half period of the resonance frequency is about 10 volts. That is, τ! = «: (L t C SC EP / (c s + C EP)) 1/2 = about 1 0 Jtz s The impedance of the inductor L 2 is selected so that, for example, the half period T2 of the resonance frequency of the LC resonance circuit I 2 is about 1 0 〇 M s * that is, selected to make

Ts ~ Wu (L2Cef * Cr / (Cep ten CR)) 1/2 = about 1 00 〇ren s At this time, '1 ^ 2 is about 100 times 1 ^. The operation of the circuit of 1 (A) ® will be described below with reference to Fig. 1 (B) *. The stomach 1 (B) diagram shows the capacitors and the dust collector electrodes E of the electric current PG for the electric dust collector shown in Fig. 1 (A). The time variation of the voltage of the non-ground electrode of P, the horizontal axis represents time, and the vertical axis represents negative voltage • curve Vs 'VEP, 卩 12 represents the storage capacitor Cs · dust collector electrode EP' recovery capacitor Cr between the electrodes Voltage. This paper size applies to the Chinese National Standard (CNS) A4 (210X297 mm)--* ι · 『V57 ----------- ^ --- 'Λ 装 ------ Order- ----- "(Please read the note on the back before filling in this page) A7 B7 Printed by the Employees' Cooperatives of the Central Sample Bureau of the Ministry of Economic Affairs 11 V. Description of the invention (11) Before time ti, the switch SW becomes non-conducting The storage capacitor Cs is charged until the output voltage of the direct current power supply DC, and the voltage Vs becomes the initial value Vso. The absolute value of this voltage is greater than that of the dust collector electrode EP. The starting voltage of the halo is sufficiently large. The electrode EP has a negative charge stored until time t 1. Since the negative charge is lost by the corona discharge, in a steady state, the voltage V EP is approximately equal to the initial voltage of the electricity, and becomes the initial value VEP. 》》 When the voltage becomes higher than the voltage vEP (the absolute value becomes smaller), the recovery capacitor is turned on by turning on the two-pole MD2 (“Current flows to the dust collector electrode E. P. Therefore, in a steady state, the voltage VR is It is slightly lower than the voltage VEP (the absolute value is large) and becomes the initial value VRO. Timing control means C The NT system turns the gate fluid 31 into a non-conducting state just before the time ti. At time t I, the timing control means CNT turns the switch SW to the fixed contact D. The LC resonance circuit I i is formed, and the mobile diode is formed. The current in the positive direction of Di, that is, the electric charge stored in the storage capacitor 03 <: 3 flows into the dust collector electrode EP »Therefore, the absolute value of the voltage V EP is decreased and the absolute value of the voltage V EP is increased. Because of the storage capacitor Cs It is approximately equal to the electrostatic capacitance C of the dust collector electrode EP, so the increase in the absolute value of the voltage V EP is approximately the same as the decrease in the absolute value of the voltage Vs * * If there is no energy loss according to the resistance, the LC resonance circuit At time t 2 of the half period TI of the resonance frequency of I i, the absolute I pair of the voltage V s decreases to the initial value of the voltage v EP to vEPO, and the absolute value of the voltage vEP increases to the initial value of the voltage vs 2 to v so 。When it is time t 2 This paper size applies the Chinese national standard (CNS > A4 size (210X297mm) (Please read the note on the back before filling this page) -14-43 632 7 A7 B7 Central Standard of the Ministry of Economic Affairs Municipal Bureau of Expenditure When printed (5) invention description (12), the current wants to flow backward. However, because the diode Di is inserted, the reverse current will not flow. When the absolute value of the voltage V EP becomes greater than the absolute value of the voltage VR ' Since the diode D2 is turned on, a part of the negative charge stored in the dust collector electrode EP flows into the recovery capacitor CR. However, 'the half period T2 of the resonance frequency of the LC resonance circuit I 2 is 1 ^ C resonance circuit I Since the half cycle of Ti is about 10 times, the rise time of the resonance current excited to the LC resonance circuit I 2 is sufficiently longer than the time Ti. Therefore, the change in voltage V of the current flowing in the LC resonance circuit I 2 during time tt 2 is minimal. After time t 2, the current of the LC resonance circuit I: will not flow, but only in the LC resonance circuit I. 2 flowing current. That is, the negative charge of the electrode D of the deposited dust collector is transferred to the recovery capacitor CR. Therefore, the absolute value of the voltage VEP will be reduced, and the absolute value of the voltage VR2 will be increased. * Because the static capacitance of the dust collector electrode EP and the recovery capacitor CR are approximately equal, the absolute value of the voltage V EP is reduced to the absolute value of the voltage. The increase is roughly equal. If there is no energy loss according to the resistance, the absolute value of the voltage V EP decreases to the initial value of the voltage VR2 V RO • and the absolute value of the voltage VR increases to the initial value of the voltage vs 2 V so • When the half cycle T 3 elapses At t 3, a reverse bias is generated in the diode 卩 2, so no current flows. At this moment, since the voltage V EP decreases the absolute value to an initial value close to the value of the initial value V EPO of 71 °, the pulse waveform drop of the voltage V EP becomes sensitive, and the base voltage also becomes flat. (Please first Read the note f on the back and fill in this page.) This paper size is applicable to China S House Standards (CNS) A4 (2 丨 0X29? Mm) -15-436327 A7 B7 Printed by the Consumers' Cooperative of the Central Bureau of Standards, Ministry of Economic Affairs V. Description of the invention (13) After time t2, the timing control means CNT restores the switch SW to the neutral position. At this time, since the current hardly flows in the switch SW, the switch SW can be easily turned off. After time t 1, the gate fluid St becomes non-conducting. Therefore, after time t 2, the voltage Vs is still about the initial value V EPO and remains unchanged. Also, after time t 3, the dipoles Di and D2 both become The non-conducting state, the voltages V SP and 711 are maintained at approximately constant values. At time t4, the timing control means CNT turns the switch SW to the fixed contact D2 side. The LC resonant circuit I 3 is formed, and a current in the positive direction of the diode D 3 flows. That is, the charge stored in the recovery capacitor CR moves to the storage capacitor Cs. Therefore, the absolute value of the voltage VR2 decreases and the absolute value of the voltage V s increases. The storage capacitor Cs and the recovery capacitor C / have approximately the same capacitance. Also, after time ts, the voltage V 3 is still close to the value of the initial value V EPO. Therefore, if there is no loss caused by the resistance, the absolute voltage VR The value is reduced to a value close to the initial value v EPO. This value becomes the initial value vRO of the next pulse. The absolute value of the voltage v s is increased to approximately the initial value vso. The absolute value of the voltage VE | > is after the time t i ′ by the corona discharge of the electrode gate of the dust collecting electrode EP, which overlaps with the above-mentioned voltage change and decreases slightly each time. Therefore, when a sufficient time has elapsed from time t 4 to time T 3, the voltage V Ep is approximately equal to the starting voltage of the corona discharge. After time t 4 + T 3, the timing control means CNT turns the thyristor Si into a conducting state. When the absolute value of voltage vs is lower than the initial value V so'- This paper size applies to the Chinese National Standard (CNS) Λ4 specification (210X297 mm y (please read the precautions on the back before filling this page) 43 632 7 Α7 Β7 V. Invention, description (14) By the direct current power source DC, the storage capacitor Cs is charged, so that the voltage .vs ^ is restored to the initial value V so. Thus, the voltage VS.V e / and VR are restored or correspond to the time t 1 The state is the same. The diode D4 shown in Fig. 1 (A) is inside the dust collector electrode EP to prevent the storage capacitor Cs from being charged in the reverse polarity by the abnormal vibration when generating electricity. The resistance R is in the dust collector. The voltage V EP is restored to the normal base voltage within a few seconds after the electric spark is generated inside the electrode E P & The voltage VEP shown in Figure 1 (B) is at a DC base approximately equal to the start of electric shock from corona discharge. The polar voltage has a waveform in which the negative pulse voltage is superimposed only during the time tt 3 ", that is, according to the above-mentioned first embodiment, the pulse-collection-type electric current collector can generate approximately a single pulse of approximately Electricity. Figure 2 shows the first (A) Example of other configuration of switches SW

Q Printed by the Shell Standard Consumer Cooperative of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) Section 2 (A) indicates the situation where the rotating electrical gap is used. * The rotating electrical gap RS Gi has Four stationary poles S Ti-S T4 and two rotating poles RTr RT2 are arranged at the apex positions of the rectangle. The electrostatic electrodes STi and ST2 are connected to the contact point T in Fig. 1 (A). The stationary electrodes ST3, 5 and 4 are respectively connected to the fixed contact T1 · T2 of the first (A) circle, and the two rotating electrodes RT " RT2 are connected to each other with a rod-shaped member 21, and are electrically shorted, The center is mounted on the rotation axis 2 »The rotation axis 2 0 is arranged at the center of a rectangle having four stationary electrodes S Ti-S τ4 as vertices. This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 43 632 7 The Central Standards Bureau of the Ministry of Economy Shellfish Consumer Cooperative A7 B7 V. Description of the invention (15) When the rotating electrode RTi, RT 2 rotates at When the rotation axis 20 is close to the stationary electrode, a discharge is generated in the gap between them and the electrodes become conductive. For example, when the rotation electrodes RTi and RT2 are respectively close to the stationary electrode STii ST3, the contact point T. and T1 becomes conductive. This corresponds to the state in which the switch SW is turned down to the fixed contact D1 in the first (A) diagram. Β From this state | Rotate the electrodes RTi, RT2 to rotate in a clockwise direction, and when approaching the stationary electrode ST At 4, s T 2, the contact T becomes conductive with T 2. This corresponds to the state in which the switch SW is turned down to the fixed contact T '2 side in FIG. 1 (A). In the rod-shaped member 2 1 A rotationally symmetric fan-shaped light shielding plate 2 is installed around the rotation axis 2 0 »A light source is arranged near the rotation axis 2 0, and a rotating electrode position detection means that receives light emitted from the light source and forms an output signal 2 3 * Shading plate 2 2 series and rotating electrode RT ruler Ding 2 And the rod-shaped member 2 1—the optical path of the rotating electrode position detecting means 23 of the light-shielding rotating electrode 2. The light-shielding plate 2 2 is arranged to be able to shield the rotating electrode position detecting means 2 3 before the time rounder than the first (B). Light path, and the light shielding can be released after time t4 + T3 *. That is, the light shielding plate 2 2 is at the rotating electrode RTi, RT2 is close to the stationary electrode STi, ST3, and the specific electric flower can detect the position of the rotating electrode before it is generated between the electrodes. In the optical path of means 2, 3, the rotating electrode RT〆111'2 is close to the stationary electrode ST4, 5 but 2 and the shading can be released only after the time D 3 has elapsed from the time when electricity was generated. Output signal input of the rotating electrode position detecting means 23 To the 1st (_ This paper size applies to the Chinese national standard (CNS > A4 size (210X297mm) ^^^ 1.-T-= mn τ _ (Please read the precautions on the back before filling this page)) Order -18-43 63 2 7 Α7 Β7 V. Description of the invention (16) A) Figure timing control means CNT. The timing control means CNT is to change the gate fluid S i to the period during which the optical path of the rotating electrode position detecting means 23 is blocked. Non-conducting state · Figure 3 (A) shows the present invention The circuit for the electric dust collector of the second embodiment, the peripheral circuit and the circuit configuration of the electrodes of the dust collector. Figure 3 (B) shows the non-grounding of each capacitor and the collector of the electric dust collector circuit of Figure 3 (A). The time variation of the voltage of the electrode. The circuit PG for the electric dust collector shown in Fig. 3 (A) is a LC resonance circuit excluding the circuit PG for the electric dust collector shown in Fig. 1 (A). 1 3, instead of the resistance R 2 is composed of diodes D2 connected in parallel. Since there is no LC resonance circuit, instead of the switch SW of the first (A) cycle, a rotating flower gap R s G 2 having two stationary electrodes is used. The rotating electric flower gap RSG2 is equivalent to the stationary electrode S 1'2 and 5 T4 except the rotating electric flower gap R S G2 shown in FIG. 2 (A). The other structure is the same as the circuit for the electric dust collector shown in Fig. 1 (Α). During the period in which the absolute value becomes larger than the absolute value of the voltage VR until time t 3, the diode D2 in FIG. 3 (A) is turned on. Therefore, in FIG. 3 (A), the voltages Vs, V ^, and VR regardless of the presence or absence of the resistance R2 show the same change during the period from time t1 to t3 in FIG. 1 (B). After time t 3, when the diode D 2 is reverse-biased, the negative charge of the recovery capacitor C R through the resistor R 2 leaks to the dust collecting electrode E P every time, and is consumed by the electric discharge of the dust collector electrode EP. Therefore ·-This paper size is in accordance with Chinese National Standard (CNS) Α4 specification (210X297 mm) -19-43 63 2 ί Printed by Shellfish Consumer Cooperative of Central Bureau of Standards of the Ministry of Economic Affairs Α7 ____ Β7_ V. Description of the invention (17) Voltage The absolute value of VR2 gradually decreases β, that is, the absolute value of the electrode voltage 电压 of the voltage VV EP decreases slowly after the single pulse waveform is shown in the period from time ti to t 3 corresponding to time 3 in FIG. 3 (B). This value becomes the initial value VR0, VEP of the next pulse. . When the circuit PG for an electric dust collector shown in FIG. 3 is used, although the voltage generated at the electrodes of the dust collector cannot be an ideal waveform in which a single pulse is superimposed on the recording start voltage, a smaller number of parts can prevent the rotating gap Then re-arc. In the above embodiment, in order to move the electric charges between the storage capacitor cs, the dust collector electrode EP, and the recovery capacitor CR, the voltage changes of the capacitors become approximately equal, and the electrostatic capacitances of the capacitors are approximately equal. The electrostatic capacitors of the storage capacitor Cs, the dust collector electrode EP, and the recovery capacitor CR may be made smaller in this order. The charge stored in the storage capacitor Cs is sequentially transferred in accordance with the dust collector electrode EP and the recovery capacitor CRt. Therefore, the electrostatic capacitance of each capacitor is set to the above relationship and can compensate for the attenuation of the voltage. However, at time t3 in FIG. 1 (B), when it becomes 丨 Vs | > 丨 VEP | *, a negative charge may flow from the storage capacitor Cs to the dust collector electrode EP. Therefore, at time t3, each electrostatic The capacitor is set to | Vs | < | VEP | is ideal. The fourth (A) plaque is a part of a circuit for an electric dust collector according to a modified example of the first and second embodiments. A resistor R3 is connected to the diode in series, and the other components are the same as those in Fig. 1 (A) or Fig. 3 (A). When electricity is generated at the electrode EP of the dust collector, the stored charge of the storage capacitor Cs is passed through the switch SW (in the first embodiment) or rotating the electricity-this paper ^ dimensions are applicable to China National Standard (€ 郇) 8 4 specifications (210 father 297 mm) ~~-Free ϋ * (Please read the notes on the back before filling out this page) 436327 Α7 Β7 Imprint by the Central Consumers Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, V. Description of the invention (18) Gap RSG2 (second implementation For example), inductor 1 ^, diode 0:, dust collector electrode ep is discharged, because the discharge m circuit has capacitors and inductors, so the discharge current will vibrate. Therefore, there is a storage capacitor (: 3 is reversed polarity) In the case of ground charging. Diode d4 constitutes a bypass circuit so that the storage capacitor cs does not charge in reverse polarity. A resistor R3 inserted in series with diode D4 suppresses the increase in current flowing through diode D4. The resistance R3 suppresses the increase of the current flowing through the diode 04, and can reduce the amount of heat generated in the diode 04. The resistance value of the resistance ruler 3 is, for example, about 10 to 100 Ω. 4 (A) shows the series connection of diode D 4 and resistor R 3 Circuit | In the case of connecting between the inductor L 2 and the switch SW or the rotating flower gap RS G2, but it is closer to the storage capacitor C 3 side than the inductor! ^, It can also be connected to other positions. "For example, as the first As shown in FIG. 4 (B), a series circuit of the diode D4 and the resistor R3 may be connected between the non-ground electrode and the ground potential of the storage capacitor (3). In the first and second embodiments described above, · Describe the case where the half period Ti in Figure 1 (B) is about 10ms and T2 is about 100 # s, but other times are also possible. However, in order to fully increase the pulse height of the voltage V EP, the half period T2 is sufficiently longer than half cycle D1, for example, it is ideally more than 10 times * For example * the electrostatic capacitance of the storage capacitor Cs becomes about 0.9 to 1.1 times the electrostatic capacitance of the dust collector electrode EP and the recycling container CR2. The electrostatic induction coefficient of the inductor 1/2 is ideally made more than 10 times the electrostatic induction coefficient of the inductor Li. If the time Tι is shortened to o.lw s', the time T2 is shortened to-This paper standard applies to the Chinese National Standard (CNS) Α4 Specifications (210X 297mm) < Please read the note on the back first Please fill in this page for further details) -21-4 3 632 7 Printed by A7 B7, Shellfish Consumer Cooperatives, Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (19) 1 # s, it is easy to generate a long fluid corona at the electrode of the dust collector In the dust-collected gas, it is easy to produce chemically active 0 groups, 0 Η groups g. With these bases, S 〇2 in the gas is oxidized to H2S 04. nh3 俾 is injected into the dust-collected gas. Neutralize h2s 〇4, but can be recovered as (NH4) 2S04 • In this way, by using a shorter pulse drive, it can be used as a desulfurization device. In addition, H2S 04 has the function of reducing the resistance of the dust to be collected > Therefore, it is possible to suppress the reverse delamination phenomenon caused by the high-resistance dust film attached to the surface of the dust collector electrode. The present invention has been described based on the embodiments, but the present invention is not limited to these. For example, various changes, improvements, and combinations can be made by those skilled in the art. [Effects of the invention] As described above> According to the present invention, since the charge stored in the electrode of the dust collector does not flow back to the power source side, Once recovered to the recovery capacitor, the circuit used to apply the pulse voltage can be easily opened after a single pulse voltage is applied to the electrode of the dust collector. Therefore, it becomes possible to apply a waveform voltage close to an ideal waveform to the dust collector electrode. [Simplified description of the drawing] FIG. 1 is a diagram showing the circuit of the electric dust collector according to the first embodiment, its peripheral circuit, and the circuit configuration of the dust collector electrode. Formula, and a graph showing the time change of the electrical response of the electric dust collector circuit. This paper size applies to China National Standards (CNS) A4 (210X 297 mm) (Please read the notes on the back before filling out this page) Order -22 ~ 43 632 7 Printed by the Central Government Bureau of the Ministry of Economic Affairs Manufacturing A7 B7 V. Description of the Invention (20) The second figure is a circular type showing another configuration example of the switch of the electric dust collector circuit according to the first embodiment. Fig. 3 is a diagram showing a circuit of an electric dust collector according to a second embodiment, a circuit configuration of a peripheral circuit and a collector electrode; Fig. 4 is a diagram showing a part of a circuit for an electric dust collector according to a modification of the first and second embodiments. Fig. 5 is a circular form showing a circuit of an electric dust collector according to a conventional example, and its peripheral circuit and the circuit of the electrode of the dust collector; a watch showing the time change of the voltage of the electric dust collector circuit; and the rotation of the electric dust collector circuit Schematic diagram of another example of the configuration of the electrical gap portion. Fig. 6 is a diagram showing a circuit configuration of an electric dust collector according to a conventional example, a peripheral circuit thereof, and a circuit of an electrode of the dust collector. [Explanation of Symbols] 20: Rotating shaft '2 1: Rod-shaped member, 22: Shading plate 1 2 3: Rotating electrode position detection means, L: Inductor, c: Capacitor, RSG: Rotary electrical gap, D: Two Polar body, R: resistance, DC: DC power supply, EP: dust collector electrode, S: brake fluid, CNT: timing control means 'SW: switch' RG: electric dust collector circuit, RT: rotating electrode, ST: stationary electrode. This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) < Please read the precautions on the back before filling this page)

-twenty three -

Claims (1)

Members are kindly requested to indicate the date, date, and date, whether there is any change in the printed oxygen amendment of the Central Plant Vehicle Bureau of the Ministry of Economic Affairs of the Λ Industrial Consumer Cooperative, and the content of 1T is a net order ^^ 0: '43 63 2 7 __________ —? | ^ 112 裳 民 _8 开 2 命: Amend __________ 08ί 6. Scope of Patent Application 1 · A circuit for a pulse collector type electric dust collector, which specifically has: an input terminal to which a DC voltage is applied, and a dust collector is connected The output terminal of the electrode, a storage capacitor connected to the input terminal on one of the electrodes, and the storage capacitor connected to the input terminal on the other electrode, and a recycling container with the ground potential on one of the electrodes, and a common contact, A current path conversion means for the first contact and the second contact; a first conduction state connecting the common contact and the first contact; and a second conduction state connecting the common contact and the second contact, And a neutral state in which the common contact is not connected to any of the first and second contacts, and the common contact is connected to a non-ground electrode of the storage capacitor And a series circuit including a first inductor and a first diode | a first current path connecting the first contact point to the output terminal and a series circuit including a second inductor and a second diode A second flow path that connects the output terminal and the non-ground electrode of the recovery capacitor, the polarity of the electrode on the output terminal side of the second diode is opposite to the polarity of the first diode, and It is composed of a series circuit including a third inductor and a third diode, and the non-ground electrode connecting the recovery capacitor and the second bonding electrode, and the electrode polarity on the recovery container side of the third diode is the same as that of the first diode. 2 The 3rd current path of the opposite polarity of the diode * 2. The pulse collector type electrical collector paper size described in item 1 of the scope of patent application, using the Chinese national standard (please refer to M1 Note the item in $, then fill in this 3r) 4 3 63 2 7 Lithium Ministry of Central Economic Development Bureau of the Ministry of Work and Consumer Cooperatives printed policy it is _§1__ VI. Application for patent Fanyuan dust machine circuit, of which • of the above 2 inductor The electrostatic induction coefficient is the static of the first inductor mentioned above. The induction coefficient is 10 times or more. 3. The circuit for the pulse-collection type electric dust collector as described in item 1 or 2 of the patent application park, wherein the current path conversion means has a connection to the first and The first and second stationary electrodes of the second contact, the third and fourth stationary electrodes connected to the common contact, and the first and third stationary electrodes are connected between the first and third stationary electrodes in a certain rotation position, and At a certain other rotating position, the rotating electrode between the second and fourth stationary electrodes is conducted. 4. The pulse-collection type electric dust collector described in the patent application scope item 1 or item 2 is used in the "road * where * A fourth current path connected between the first current path and the first connection point or between the non-ground electrode of the storage capacitor and the ground cyan position; a series circuit including a fourth diode and a resistance element The fourth current path of the fourth diode is connected to the polarity of the flowing current when the potential of the DC voltage applied to the input terminal becomes the reverse polarity with the non-ground electrode of the storage capacitor. 5. — Pulse collector A circuit for a gas dust collector, which has: an input terminal * to which a DC voltage is applied, and an output terminal connected to an electrode of the dust collector, and one of the electrodes is connected to a ground potential, and the other electrode is connected to a storage capacitor connected to the input terminal. * And (please read "Notes on the back of the page before filling in this page) λ Order_ Γ! This paper size uses China National Standard (CNS) Α4 size (210 × 2Ϊ» 7 mm) Α8 Β8 a D8 > 7 6. Applying for a patent application: One of the electrodes gives a ground potential recovery capacitor and a series circuit consisting of a switching means, a first inductor and a first diode, which connects the non-ground electrode of the storage capacitor to the above The first current path of the output terminal and a series circuit including a second inductor and a second diode are connected to the non-ground electrode of the output terminal and the recovery capacitor, and the output terminal of the second diode The second current path with the polarity of the electrode on the side opposite to the polarity of the first diode, and the resistor connected in parallel to the second diode. 6. As requested The circuit for the pulse-collection type m-gas dust collector described in Item 5 above, wherein the electrostatic induction coefficient of the second inductor is more than 10 times the electrostatic induction coefficient of the first inductor * 7. The circuit for the pulse-collection type electric dust collector according to item 5 or item 6 of the scope *, in which the above-mentioned switching means is composed of a rotating electrical gap. 8. As described in item 5 or 6 of the patent application park The pulse collection m-type electric dust collector circuit further includes a third current path connected to the first current path at one end closer to the storage capacitor side than the first inductor, and a third current path connected to the ground potential at the other end; A series circuit of a diode and a resistive element * is connected to the polarity of the current flowing when the DC m voltage applied to the above-mentioned Han input terminal with the potential of the non-ground electrode of the storage inductor becomes a reverse polarity. The third current path 9. 9. An electric dust collector, which has the following characteristics: The voltage output state and non-output state are switched by the on-off control signal. 4 Specifications (210X297) _ q _ IL ----- 1 61 — —— I-Order I: ----- f < Please «read the note on the back and buy it in 4 copies first） Ministry of Economic Affairs Central government Zhun Λ Beigong consumer capital cooperation Du Yince Ministry of Economic Affairs Central # Standard printed for Beigong Consumer Cooperatives 6. Patent-pending solid-state DC power supply, and dust collector electrode with ground potential at one of its electrodes One of the m poles provides a ground potential, and the other one of the "poles" provides a capacitor for the output voltage of the above-mentioned DC mold source, and one of the electrodes provides a grounded m-position recovery capacitor, and has a common bonding adhesive. The current path conversion means of the first contact and the second contact: a first conduction state connecting the common contact and the first contact, and a second conduction state connecting the common contact and the second contact And the above-mentioned current path conversion means in which the above-mentioned common contact is not connected to any of the first and second contacts, and the above-mentioned common contact is connected to the non-ground electrode of the above-mentioned capacitor, and includes the first The series connection between the sensor and the first diode The first contact and the first current path of the non-grounded electrode of the collector electrode, and a series circuit including a second inductor and a second diode, which connect the non-grounded electrode of the dust collector electrode and the recovery Non-grounded electrode of the capacitor * The second current path of the second diode with an electrode polarity on the output terminal side opposite to the polarity of the first diode, and includes a third inductor and a third diode It is composed of a series circuit that connects the non-ground electrode of the recovery capacitor and the second contact, and the polarity of the 竃 pole on the recovery capacitor side of the third diode is opposite to the polarity of the second diode. 3 current path * 1 0. The electric dust collector as described in item 9 of the scope of patent application, wherein the above-mentioned "flow path conversion means has a paper ft scale and is in use" «National Standard (CNS > Α4ΛGrid (210X297 mm) '(Please read the precautions on the back before filling in this page) ig g dpt ^ / A8 B8 C8 D8 6. The scope of the patent application is connected to the first and second stationary electrodes of the first and second contacts respectively. And connected to the above share When the third and fourth stationary electrodes * and the rotation angle from the reference position are within a certain range, the conduction between the first and third stationary electrodes * is conducted, and when the rotation angle is in some other circle, the second and fourth stationary electrodes are conducted. Rotary electric room with rotating electrode between stationary electrodes: It also has a rotating electrode position detection that detects the rotation angle from the reference position of the rotating electrode to the control means and sends a lightning signal out of the detection means into the patent, among which the above The rotating electrode receives light from the light of the above-mentioned control means of the light source. The rotating electrical electrode is mounted on the light shielding plate of a certain light, and the electric dust collector described in the item 10 of the range. Light • and send the light detection signal to the device • and pole and rotate with the rotating electrode, when the range is rotated, the light is radiated from the above light source (please first read the Note $ Item on the back and then #write the book I) Ministry of Economic Affairs Central government rate ^ Consumers' cooperatives printed on paper paper size China «Family Standard (CNS > A4 size (210X297 mm)