CN105944839A

CN105944839A - Energy-saving type high-voltage high-frequency power supply for electric dust removal

Info

Publication number: CN105944839A
Application number: CN201610449387.8A
Authority: CN
Inventors: 陈文臣; 李呈森
Original assignee: ZHEJIANG LIANCHENG ENVIRONMENT SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG LIANCHENG ENVIRONMENT SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2016-06-21
Filing date: 2016-06-21
Publication date: 2016-09-21

Abstract

The invention discloses an energy-saving type high-voltage high-frequency power supply for electric dust removal. The energy-saving type high-voltage high-frequency power supply comprises a rectifier, an inverter and a transformer, wherein the inverter comprises a motor, two input electric brushes and two output electric brushes; a commutator and two output electrodes are arranged on the rotary shaft of the motor; the commutator is a lantern ring which is fixedly arranged on the rotary shaft and rotates along with the rotary shaft; the commutator is provided with a pair of conductive blocks which are disposed at an angle of 180 degrees relative to each other; the two input electric brushes are in contact with the commutator; the two input electric brushes are oppositely arranged; the two conductive blocks are in conduction with two output electrodes separately; and the two output electric brushes are in conduction with two output electrodes separately. Direct current is input from the rectifier, i.e., polarity of electricity on the input electric brushes is stationary while the conductive blocks continuously rotate along with the motor, and therefore, the conductive blocks cannot be in contact with different input electric brushes, and alternating current can be output from the output electric brushes. By virtue of the inverter with the structure, no electron device is adopted, so that all loss is just circuit loss and motor loss, and therefore, an energy efficiency ratio is greatly increased.

Description

A kind of electric precipitation is with energy-saving high voltagehigh frequency power supply

Technical field

The present invention relates to technical field of electrostatic dust collection, especially relate to a kind of power supply for electrostatic precipitation.

Background technology

The operation principle of electrostatic precipitator is to utilize HVDC non-uniform electric field to make the gas molecule in flue gas ionize, produce a large amount of electronics and ion, move to the two poles of the earth under the effect of electric field force, encountering the dust granules in air-flow in moving process makes it charged, Charged separates with air-flow under electric field force effect and moves to opposite polarity pole plate or polar curve, Charged arrives pole plate or is adsorbed on pole plate or polar curve by electrostatic force during polar curve, makes dust fall into ash bucket by rapping apparatus so that gas cleaning.

General electrostatic precipitator is equipped with the energy-saving high voltagehigh frequency power supply of an electric precipitation, this power supply all includes the most several part, alternating current is become galvanic reorganizer by one, the inverter of one frequency alternating current that the unidirectional current that reorganizer exports becomes job demand, also has the transformator for the alternating current liter that inverter exports presses to job demand voltage.

Conventional inverter is all to utilize the electronic devices and components such as metal-oxide-semiconductor field effect transistor or IGBT igbt to realize the commutation of electric current, in the case of power is relatively big, this inverting can cause bigger energy loss, and components and parts heat can be caused too high, so that the heat dissipation equipment of a lot of auxiliary.It is therefore desirable to improved.

Summary of the invention

The present invention is directed to deficiency of the prior art, it is provided that a kind of electric precipitation, with energy-saving high voltagehigh frequency power supply, greatly reduces energy consumption, it is to avoid the heat of components and parts is too high.

In order to solve above-mentioned technical problem, the present invention is addressed by following technical proposals: a kind of electric precipitation is with energy-saving high voltagehigh frequency power supply, including commutator, inverter and transformator, described inverter includes two, motor input brush and two output brushes, a diverter and two output electrodes it are provided with in the rotating shaft of described motor, described diverter is one and is fixed in described rotating shaft the collar rotated together with described rotating shaft, described diverter is provided with the conducting block being mutually 180 degree a pair, two described input brushes contact with described diverter, and two described input brushes are oppositely arranged, two described conducting blocks turn on two described output electrodes respectively, two described output brushes are conducted with two described output electrodes respectively.Commutator inputs the time unidirectional current come, say, that the polarity that input brush powers on is all fixing, but conducting block is ceaselessly along electric machine rotation, so conducting block can contact from different input brushes, causes can deriving on output brush alternating current.Adopting inverter in this way, entirely without using electronic device, whole losses is exactly only the loss of line loss and motor, so substantially increasing Energy Efficiency Ratio.Input brush is the when that conducting block separating, it it is the conductive area being gradually reduced between conducting block, this resistance having resulted in circuit can be gradually increased, described conducting block includes a movable block being slidably connected on groove, the bottom of described movable block is provided with spring, it is provided with the first magnet on described input brush, the second magnet it is provided with on described movable block, when described diverter turns to certain angle, described first magnet is relative with the described second magnet same sex, described movable block slips into described inside grooves under the effect of magnetic repulsive force, described input brush is separated with described movable block.The inverter of this structure, the separation between its input brush and conducting block is instantaneous completing, and there is not the stage that resistance is gradually increased, and therefore efficiency is also greatly improved.

In previous technical scheme, it is preferred that described second magnet is positioned at the centre position of described sliding shoe circumference.

In technique scheme, concrete, described commutator includes diode and relay, the live wire of described extraneous power supply coiler part with described diode and described relay successively is connected on zero line after connecting, described relay has a normal open switch and a normally closed switch, the two ends that described normal open switch intersects with described normally closed switch are connected, the live wire of described extraneous power supply switchs one end with described relay normally open and is connected, the described relay normally open switch other end is connected with described inverter, and the described extraneous zero line of power supply is connected with the zero line of inverter.During use, when extraneous power supply can pass through diode, the electric current forward normal open switch by relay, when extraneous power supply can not pass through diode, electric current is back through the normally closed switch of relay, and this just by the alternating current of both direction, becomes the unidirectional current in a direction.Using the commutator of this structure, in addition to controlling a diode of side, do not use other electronic original part, and the diode of this control side is not over bigger electric current, even if therefore in the case of high power, loss is not the biggest.

In technique scheme, it is preferred that be provided with the electric capacity for filtering between the other end and the described zero line of described relay switch.

Compared with prior art, the invention has the beneficial effects as follows: commutator inputs the time unidirectional current come, that is the polarity that input brush powers on is all fixing, but conducting block is ceaselessly along electric machine rotation, so conducting block can contact from different input brushes, cause can deriving on output brush alternating current.Adopting inverter in this way, entirely without using electronic device, whole losses is exactly only the loss of line loss and motor, so substantially increasing Energy Efficiency Ratio.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the present invention.

Fig. 2 is the schematic diagram of commutator.

Fig. 3 is the schematic diagram of inverter.

Fig. 4 be one state of brush and diverter coordinate schematic diagram.

Fig. 5 be brush with another state of diverter coordinate schematic diagram.

Detailed description of the invention

Below in conjunction with detailed description of the invention and accompanying drawing, the present invention is described in further detail.

Seeing Fig. 1, a kind of electric precipitation is with energy-saving high voltagehigh frequency power supply, including commutator 1, inverter 2 and transformator 3.

Seeing Fig. 2, commutator 1 includes diode D, relay K T and electric capacity C, is controlling side, and the live wire of extraneous power supply coil with diode D and relay K T successively connects with zero line after being connected again.Described relay K T has an a normal open switch KT1 and normally closed switch KT2, and the two ends that described normal open switch KT1 intersects with described normally closed switch KT2 are connected.In working side, the live wire of described extraneous power supply is connected with described relay K T normal open switch KT1 one end, and the described relay K T normal open switch KT1 other end is connected with described inverter 2, and the described extraneous zero line of power supply is connected with the zero line of inverter 2.

See Fig. 3, inverter 2 includes that 21 two, motor inputs brush 2a, 2b and two output brush 2c, 2d, a diverter 22 and two output electrodes 23 it are provided with in the rotating shaft of motor 21, 24, diverter 22 is one and is fixed on the collar rotated together with rotating shaft in rotating shaft, diverter 22 is provided with the conducting block 221 being mutually 180 degree a pair, 222, two input brush 2a, 2b contacts with diverter 22, and two input brush 2a, 2b is oppositely arranged, two conducting blocks 221, 222 respectively with two output electrodes 2c, 2d turns on, two output brush 2c, 2d respectively with two output electrodes 23, 24 are conducted.Adopting in this way, inverter does not use any electronic devices and components, and therefore maximum possible avoids energy loss.

See Fig. 4 and Fig. 5, conducting block 221,222 includes a movable block 22a being slidably connected on groove 22b, the bottom of movable block 22a is provided with spring 22c, it is provided with the first magnet 4 on input brush 2a, 2b, being provided with the second magnet 22d on movable block 22a, when diverter 22 turns to certain angle, the first magnet 4 is relative with the second magnet 22d same sex, movable block 22a slips into inside groove 22b under the effect of magnetic repulsive force so that input brush separates with movable block.In order to ensure that movable block can slip in groove smoothly, in the present embodiment, the second magnet is positioned at the centre position of sliding shoe circumference, so guarantees that electromagnetic force that sliding shoe is subject to is with groove in the same direction.

During use, when extraneous power supply can pass through diode, the electric current forward normal open switch by relay, when extraneous power supply can not pass through diode, electric current is back through the normally closed switch of relay, and this just by the alternating current of both direction, becomes the unidirectional current in a direction.Again after the filtering of electric capacity C, output is to two input brushes of inverter, input brush by with the contacting of conducting block, electric energy is delivered to output brush, owing to electrode is constantly rotating, conducting block ceaselessly contacts from different input brushes, hence in so that the electric current on output brush constantly changes, this just will complete and unidirectional current is become alternating current.The frequency of alternating current is limited by the rotating speed of motor.

Claims

null1. an electric precipitation is with energy-saving high voltagehigh frequency power supply，Including commutator、Inverter and transformator，It is characterized in that: described inverter includes two, motor input brush and two output brushes，A diverter and two output electrodes it are provided with in the rotating shaft of described motor，Described diverter is one and is fixed in described rotating shaft the collar rotated together with described rotating shaft，Described diverter is provided with the conducting block being mutually 180 degree a pair，Two described input brushes contact with described diverter，And two described input brushes are oppositely arranged，Two described conducting blocks turn on two described output electrodes respectively，Two described output brushes are conducted with two described output electrodes respectively，Described conducting block includes a movable block being slidably connected on groove，The bottom of described movable block is provided with spring，It is provided with the first magnet on described input brush，The second magnet it is provided with on described movable block，When described diverter turns to certain angle，Described first magnet is relative with the described second magnet same sex，Described movable block slips into described inside grooves under the effect of magnetic repulsive force，Described input brush is separated with described movable block.
Electric precipitation the most according to claim 1 is with energy-saving high voltagehigh frequency power supply, it is characterised in that: described second magnet is positioned at the centre position of described sliding shoe circumference.
Electric precipitation the most according to claim 1 is with energy-saving high voltagehigh frequency power supply, it is characterized in that: described commutator includes diode and relay, the live wire of described extraneous power supply coiler part with described diode and described relay successively is connected on zero line after connecting, described relay has a normal open switch and a normally closed switch, the two ends that described normal open switch intersects with described normally closed switch are connected, the live wire of described extraneous power supply switchs one end with described relay normally open and is connected, the described relay normally open switch other end is connected with described inverter, the described extraneous zero line of power supply is connected with the zero line of inverter.
Electric precipitation the most according to claim 3 is with energy-saving high voltagehigh frequency power supply, it is characterised in that: it is provided with the electric capacity for filtering between the other end and the described zero line of described relay switch.