SU1726127A1 - Arrangement to control electrode shaking mechanism of electrostatic precipitator - Google Patents

Abstract

The invention relates to gas cleaning using electric dust collectors, can be used in the control systems of the shaking mechanism of electrostatic precipitators and improves their reliability. The device contains a block 1 of forming and converting a signal from a blow of a hammer 2 and a display unit (BI) 7. It is equipped with a block 5 of generating and converting reference signals and a block 6 of logic. The output of block 1 of forming and converting signals from a hammer blow and the output of block 5 of forming and converting reference signals are connected to the corresponding inputs of block 6 of logic, the output of which is connected to the input of block 7 of indication. 1 il.

Description

The invention relates to the separation of dispersed particles from gases using an electrostatic effect, in particular to cleaning electrodes from dust accumulated on them, can be used in control systems for shaking electrodes of an electrostatic precipitator.

The aim of the invention is to increase the reliability of the device.

The drawing shows an image of a mechanism for shaking electrodes of an electrostatic precipitator with a block diagram of a control device.

The device contains a block 1 of forming and converting a signal from a blow of a hammer 2 on the anvil 3 of the precipitation or corona electrode 4 and the block 5 of forming and converting a reference signal, the outputs of which are connected through the logic block 6 to the display block 7.

The block 1 of forming and converting the signal from the blow of the hammer 2 consists of a sensor 8, an amplifier 9 and a monovibrator 10.

A sensor 8 is mounted on the shaking shaft 11 outside the casing 12 of the electrostatic precipitator.

The unit 5 of the formation and conversion of reference signals contains a generator of 13 reference signals, a generator of frequency 14 of reference signals and a counter-decoder 15.

The logic block 6 represents the type I comparison logic elements. The number of the logic elements AND in the logic block 6 is equal to the number of electrodes of the 4 electrostatic precipitator and ranges from a to p.

The display unit 7 is made of n indicators in the form of a board.

The device works as follows.

The collecting and corona electrodes 4 are regenerated by striking hammers 2 mounted on the shaking shaft 11 on the anvil m 3 of electrodes 4. The shock wave arising from the impact of the hammer 2 propagates along the shaking shaft 11.

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The sensor 8 of the block 1 of forming and converting the signal from the impact of a hammer 2 located on the shaft of shaking 11 outside the casing 12 of the electrostatic precipitator perceives shock waves and converts them into signals from the impact of the hammer 2. Signals from the impact of the hammer 2 are amplified by the amplifier 9 and are fed to the monovibrator 10 where are converted to a standard view.

At the time of waiting for the signal from the impact of the first hammer 2, the generator 13 of the reference signals of the unit 5 for generating and converting the reference signals is turned on.

The generator 13 generates reference signals with a follow-up period set by the frequency reference of 14 reference signals.

The period of the following is equal - where T is the period of shaking, and n is the number of hammers. The period t follows: - corresponds to the period following the signals from the blow of the hammer 2, provided that all the hammers work properly.

The decoder counter 15 of block 5 distributes the reference signals a to n as it arrives from the generator 13 at its outputs. Thus, n reference signals corresponding to n hammers are located on the n outputs of the counter-decoder 15.

The reference signals from the counter-decoder 15 of the block 5 of forming and converting the reference signals and the signals from the blow of a hammer 2 from the monovibrator 10 of the block 1 of forming and converting the signals from the blow of a hammer 2 are fed to a logical comparison to the elements AND of the logic block 6.

In the case of the presence at the input of a corresponding element AND of a logic block 6 of a reference signal from the impact of a hammer 2 at the output of the corresponding element I, a signal is generated. If there is only a reference signal at the input of the corresponding AND block of logic 6 and there is no signal from the impact of the hammer 2 at the output of the corresponding element AND of the logic block 6, no signal is generated.

The presence of a signal at the output of one of the elements And the logic block 6 indicates the health of the corresponding hammer 2. The absence of a signal at the output of one

of the elements I. of the logic block 6 indicates that the corresponding hammer 2 does not work.

Next, the signals from the logic block b are sent to the display unit 7. The execution of the display unit 7 of the n indicators provides a light indication when a signal from the logic block 6 arrives or is absent, by which you can judge the health or malfunction of the corresponding hammer 2.

The device allows to reduce the cost of the control operation, since the control of the state of all

 The multi-hammer hammers can be shipped with one device. Generating reference signals by the number of hammers allows you to eliminate possible information losses.

about the state of one of the hammers. Ensures the consistency of information on the display unit, to which the results of the comparison of the readings of the generation and conversion unit are output from the logic unit

signals from the impact of a hammer and a unit for forming and converting reference signals, and where the location of the malfunctioning hammer is determined by the absence of luminescence of the corresponding LED.

Having a single sensor for the entire regeneration mechanism reduces the likelihood of a device failing to monitor the shaking mechanism of the electrostatic precipitator electrodes. FORUMAWLAH AND ISLANDS

A device for controlling the shaking mechanism of the electrostatic precipitator electrodes, comprising a block forming and converting a signal from a hammer blow and a display unit, characterized in that

In order to improve the reliability of the device, it additionally contains a block for generating and converting reference signals and a logic block, while the logic block contains AND elements whose number is equal to

the number of electrodes of the electrostatic precipitator, the outputs of the block forming and converting the signal from the impact of a hammer and the block forming and converting the reference signals are connected to the corresponding inputs of the elements AND, and the outputs of the elements AND are connected to the corresponding inputs of the display unit.

Claims (1)

Claim A device for monitoring the mechanism of shaking the electrodes of the electrostatic precipitator, comprising a unit for generating and converting a signal from a hammer blow and an indication unit, characterized in that, in order to increase the reliability of the device, it further comprises a unit for generating and converting reference signals and a logic unit, wherein the logic unit contains And elements, the number of which is equal to the number of electrostatic precipitating electrodes, the outputs of the block for generating and converting the signal from the hammer blow and the block for forming and converting the reference x signals are connected to the corresponding inputs of AND elements, and the outputs of AND elements are connected to the corresponding inputs of the display unit.