JPS63502298A - Method and apparatus for measuring parameters of solid phase of slurry - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Method and apparatus for measuring parameters of solid phase of slurry °Technical field TECHNICAL FIELD The present invention relates to a device for measuring parameters of a production method. For example, a method for measuring the parameters of the solid phase of a slurry and implementing this method. It is related to the device.

Background of the invention Various methods are known in the art for measuring parameters of the solid phase of slurries. It is being

Therefore, the touch of the micrometer reciprocates in the slurry flow being studied. held between the surface of the needle and the surface of the gutter along which the slurry is fed It is based on determining the position of the stylus at the moment it is stopped due to a solid phase particle. Additionally, methods and equipment for measuring the particle size of solid phases in slurries are widely used. (M), rNedra J 1979.119-120 Kn, Khan J, A, r Obrobovanie i Control Technological Skik Brosesov Middle School Officer Oprobovanle I Kontrol tekhnol ogicheskikh processes-sov obogaschenlya ) see J).

Conventional methods and equipment are constantly in contact with abrasive particles of the slurry being studied The disadvantage is that the micrometer stylus wears out quickly and is therefore unreliable. Ru.

As a result, measurements of solid phase particles in slurry with the same particle size vary. In other words, the measurement accuracy is low.

A slurry based on measurement of the settling time of solid phase particles of a slurry in a vessel containing water. Methods and apparatus for measuring the particle size of solid phases of Lie are also known (e.g. Raspberry - Tibousii Photosediment Kefla (razvertyv-ausc Anal +ze-1te) 20J, Prospect Farmy Association Fritsch (pros pect firmy FRITSCH) J, D-6580, iide - IDAI? - Oberstein (0bersht-aln) - I (See G-Fs).

However, the above method requires pre-sampling the slurry to be studied from the production flow. , extracting the solid phase from the sample of the slurry, weighting, and measuring field. need to be sent to a location. This results in long measurement times (approximately 20-40 minutes) This greatly limits the field of application.

Research in which radiation is formed and the radiation is made to vibrate ultrasonically at two fixed frequencies. measuring the amplitude of ultrasonic vibrations through the fluid to be studied; The concentration of the solid phase in the slurry studied by the value of its amplitude and the critical particle size of the solid phase The combination of vacuum and centrifugal force generated by the impeller Ultrasonic vibrations are irradiated into the slurry to be studied in a special tank due to the action of Previously, the parameters of the solid phase of the slurry were determined based on the degassing from the slurry being studied. Methods of measuring meters are known (for example, in Armco grinding and systems (reklamuflrmy Armco Grinding Systems), “Tic Control of Four” A Grinding Circule (Take Control of fo (See ur Grinding C1rcuit).

A pulse generator, a power amplifier, a transmitting ultrasonic transducer, and a receiving ultrasonic transducer. A series circuit including a transducer, a receiving pulse amplifier, and an electronic switch. Equipped with two measurement channels each configured to measure parameters of solid phase of slurry. Devices are known (see, eg, ibid.). This device is a pulse a one-shot multivibrator connected between the generator and the electronic switch; A switching circuit connected between the two channels of pulse generators and this switch a multivibrator having an output terminal connected to an input terminal of the switching circuit; A comparator, a setting means, a research function selector, a recorder, an air removal tank and a driver. and a mechanical bubble separator configured with an impeller having a dynamic motor. One measurement The channel transmitting ultrasound transducer and receiving ultrasound transducer have been studied. fixed directly to the wall of the container containing the fluid to be

However, in the above-mentioned method and apparatus, the gas phase is removed beforehand from the fluid being studied. It is necessary to Since it is necessary to have a separator, it is difficult to measure the parameters of the solid phase in the slurry. The reliability of this method is quite low.

The rotating part of the mechanical bubble separator due to the action of abrasive particles in the slurry studied The mechanical bubble separator properties change as a result. Therefore, the degassing performance during operation will change. Achieve the desired level of degassing performance In order to maintain Regular shutdowns are required to perform maintenance and replacement of worn mechanical parts. wing The root wheel motor consumes a lot of energy and, as a result, it is difficult to connect this measuring device. Continuing operation will cost a lot of money. Therefore, using a mechanical bubble separator The reliability of the measurement is reduced, the measurement accuracy is reduced, and as a result the overall measurement equipment and This would increase operating and operating costs.

Summary of the invention The purpose of the present invention is to determine the concentration of solid phase in the slurry studied and the critical particle size of the solid phase. slurry, making it possible to measure the concentration of a part with high accuracy and reliability. It is an object of the present invention to provide a method and apparatus for measuring parameters of a solid phase.

This involves the process of forming ultrasonic vibration pulses and slurry to be studied The process of forming Lamb waves and how to pass those pulses through the fluid The process of sending Lamb waves along the walls of a vessel containing the fluid to be studied and is the amplitude of a Lamb wave sent a given distance along the wall of a container containing a fluid. Therefore, the process of measuring the amplitude characterizing the concentration of the solid phase of the slurry and the flow rate studied contains the logarithm of the measured amplitude of the ultrasonic vibrations passed through the body and the fluid to be studied Difference in the logarithm of a Lamb wave traveling a given distance along the wall of the container and the measured amplitude of the Lamb wave , which corresponds to the concentration of a small fraction of the critical particle size of the solid phase of the slurry. The process of calculating the ratio of the acoustic flow and the solid phase of the slurry in the fluid being studied. The process of forming the radiation pressure of acoustic radiation whose intensity is proportional to the mass of the particle, and the flow of sound and some constant values of radiation pressure intensity of acoustic radiation and those obtained without those elements. and determining the quotient of the division of the calculated ratio by the same value calculated, the quotient being Characterize the concentration of a component in a small fraction of the critical particle size of the slurry studied , is achieved by a method of measuring the parameters of the solid phase of a slurry.

Due to the above characteristics, the concentration of the solid phase of the studied fluid and the critical particles of the studied fluid Measuring the concentration of useful components in small areas of dimension without prior removal of the gas phase from the fluid simplifies the measurement method and increases the reliability and accuracy of the measurement results. can do.

Measuring the length of the pulse of ultrasonic vibrations passed through the fluid being studied and the fluid being studied Two records with measurements of Lamb waves that have traveled a given distance along the wall of a container containing by sequentially limiting their amplitude and the length of their pulses. The level of measurement of is varied proportionally to the amplitude of those pulses, thus shaping The length of the pulse received at the level made is measured and contains the fluid to be studied. The difference between the measured Lamb waves traveling a predetermined distance along the wall of the container is calculated and Characterize the concentration of the solid phase of including the difference between the measured values of all The ratio of the difference between the measured values for a Lamb wave that has traveled a given distance along the wall of the container Preferably, it is calculated and represents the concentration of the critical particle size fraction of the solid phase of the slurry. .

This makes it suitable for applications where the concentration of the gas phase is larger than the volume of the solid phase. The measurement accuracy of the concentration of the solid phase and the measurement accuracy of the concentration of the critical particle size small part of the solid phase are , it is possible to increase the measurement accuracy of the concentration of the critical small fraction of the fluid being studied. Ru.

The object of the present invention is to provide a series circuit including a pulse generator and a transmitting ultrasound transducer. , a series circuit including a receiving ultrasonic transducer and a receiving signal amplifier, respectively. Ultrasonic transformer with two measuring channels, one measuring channel transmitting The transducer and the initiating wave transducer are connected to the wall of the vessel containing the fluid to be studied. In a device that measures the parameters of the solid phase of a slurry that is directly immobilized on a A logarithmic converter connected to the output terminal of the amplifier for the signal a subtractor having an input terminal connected to the output terminal of the converter; and an output terminal of the subtractor. and an input terminal to which the output terminal of the logarithmic converter of the second measurement channel is connected. a transmitting ultrasonic transducer in each measurement channel; The user and receiver ultrasound transducer are connected to the wall of the vessel containing the fluid to be studied. Parameters of the solid phase of the slurry, mounted on a forming prism fixed to This can also be achieved by a device that measures

covering an opening extending longitudinally within the wall of a container containing the fluid to be studied; The forming prism can be mounted on a plate fixed to the wall of the container.

This structure makes it possible to operate a device that measures parameters of the solid phase of a slurry without any mechanical pressure. This eliminates the need for a foam separator, thereby increasing the accuracy and reliability of the entire device. , and can reduce device manufacturing and operating costs. The fluid studied with this device The concentration of the solid phase can be measured along with the concentration of the critical particle size fraction of the solid phase.

Each measurement channel can include a pulse stretcher.

The input terminal of each stretcher is connected to the output terminal of the delivery pulse amplifier, and the output terminal of each stretcher The terminal is connected to the input terminal of the subtractor. of the pulse stretcher of the second measurement channel The output terminal is also connected to the input terminal of the divider.

This device consists of a counter having an input terminal connected to an output terminal of a received signal amplifier. and has an output terminal connected via its own delay line to the input terminal of the pulse generator. the input terminal connected to the output terminal of the counter and the input of the OR gate. A decoder with an output terminal connected to a terminal, and a decoder and an OR gate and a controller that controls the measurement process and the calculation of the parameters of the solid phase of the slurry. It is preferable to have.

With this device, the concentration of the solid phase and the critical grain size of the solid phase can be determined without removing the gas phase beforehand. Concentration of the subdimensional fraction and the concentration of useful components in the critical fraction of the slurry studied and can be measured.

Controller controlling the measurement process and calculation of the parameters of the solid phase of the slurry studied is the second OR gate, the third pulse generator, and the forming prism among the walls of the container. above and opposite the two transducers mounted on the system. and a third transmitting transducer fixed to the second or The input terminal of the gate is connected via its own one-shot multi-by-break It is preferable to connect the input terminal of one OR gate and the output terminal of the decoder.

Control to control the measurement process and calculate the parameters of the solid phase of the slurry studied The circuit consists of a small number of components, each including a delay line, an electronic switch, an amplitude detector, and a divider. Preferably, at least four identical series circuits are provided, the input of said second divider The output terminals of all these series circuits are connected to the terminal, and the output terminal of the divider is a data output terminal of the entire device and an output terminal of at least three said series circuits; are connected together to form a common output terminal and the delay lines of all the series circuits is connected to the input terminal of the decoder, and the input terminal of each of the series circuits is connected to the input terminal of the decoder. The data input terminal of the electronic switch is connected to the output terminal of the first divider, and the data input terminal of the electronic switch is connected to the output terminal of the first divider. A control input terminal of the second electronic switch of the first series circuit is connected to an OR gate. the fifth output of said decoder via a series circuit comprising a shot multi-by-break; terminal, and connected to the sixth output terminal and the seventh output terminal, and before the other series circuit. The control input terminal of the second electronic switch is connected to each one-shot multi-vibration switch. connected to the output terminal of the decoder through the output terminal of the other series circuit. are grouped together and the control input terminal of the amplitude detector in each said series circuit is Connected to the output terminal of the decoder.

For each measurement channel, connect the output terminal of the logarithmic converter to the delay line and amplitude limiter. , a control circuit and a unit that calculates the difference in pulse length at various limit levels. It is preferable to connect it to a series circuit including. The output terminal of each unit is the subtracter Connected to input terminal.

This device can have two identical circuits forming a restriction level. each time The output terminal of each logarithmic converter is a unit for selecting the limit level. and the control input terminals of the respective amplitude limiters. a limit level selection unit having an output terminal, a second amplitude limiter and each and a series circuit including a clock control circuit connected to the amplitude limiter of the circuit. Cloth The output terminal of the control circuit is for each unit that calculates the difference in the length of the parameter. Connected to input terminal.

In each measurement channel, the output terminal of the logarithmic converter is connected to the can be connected to two units, and the output terminal of that second unit is connected to each second Width limitation The above device allows for applications where the concentration of the gas phase is larger than the volume of the solid phase. During the process, the parameters of the solid phase in the slurry can be determined without removing the gas phase beforehand. It is possible to increase measurement accuracy.

Brief description of the drawing FIG. 1 shows an overview of the steps in the method for determining parameters of the solid phase of a slurry according to the present invention. Figure 2 shows the length of the pulse of ultrasonic vibration through the fluid being studied. , of a Lamb wave that has passed a given distance along the wall of a container containing the fluid to be studied. The method of the present invention measures the pulses of the solid phase of the slurry, controlling the length of the pulses received. The process of the method is shown schematically, and Figure 3 shows the concentration of the solid phase of the slurry and the critical grains of the solid phase. Parameters of the solid phase of the slurry configured to measure the concentration of the subdimensional fraction FIG. 4 is a block diagram of the apparatus of the present invention for carrying out the method of measuring the solid phase of the slurry. and the critical particle size of the solid phase.The concentration of the small fraction and the critical particle size of the fluid being studied. The solid phase parameters of the slurry are configured to measure the concentration of useful components in a small portion. FIG. 5 is a block diagram of the apparatus of the present invention implementing the method for measuring the slurry is configured to measure the concentration of the solid phase and the concentration of the critical particle size fraction of the solid phase. , the length of the received pulse of ultrasonic vibration through the fluid being studied and the flow being studied. The length of the pulse received by a Lamb wave that has traveled a given distance along the wall of the container containing the body is Apparatus of the invention for carrying out a method for controlling and measuring parameters of a solid phase of a slurry FIG.

The best mode of carrying out the invention The method of the present invention for determining the parameters of the solid phase of a slurry iD+ has the following steps. .

Ultrasonic vibrations 2 are created and sent through the fluid 1 to be studied (FIG. 1). vibration The wavelength corresponds to the particle size of the solid phase of slurry 1 being studied. ultrasonic vibration 2 travels through slurry 1, the energy of those ultrasonic vibrations is absorbed. , consumed. If the particle size corresponds to the wavelength of the vibration, ultrasonic vibrations are more likely to be absorbed than absorbed. is also consumed.

Generally speaking, a fixed frequency of ultrasonic vibrations 2 in the slurry 1 studied The amount of attenuation depends on the solid phase concentration and particle size. The absorption and consumption ratio of ultrasonic vibrations is depends on a small fraction of in-phase particles with dimensions corresponding to the wavelength of the vibration 2 used .

In the measurement of the attenuation value of ultrasonic vibration 2 in the slurry 1 being studied, air bubbles This is a factor that causes disturbances.

It is shown that the attenuation process of the ultrasonic vibration 2 in the bubble is resonant.

As the frequency of ultrasonic vibration 2 increases, the resonance dimensions in the slurry 1 being studied increase. The amount of bubbles increases significantly, and this amount increases at frequencies of 5 MHz and above. It can actually be reduced to zero. The reason is that the resonant frequency of the bubble is It decreases as the bubbles get smaller, and when the bubbles get smaller to a certain limit, they dissolve in water. be.

Therefore, the amount of attenuation of high frequency ultrasonic vibration 2 is When passed through slurry 1, it depends almost only on solid particle size and solid phase concentration. , bubbles with non-resonant dimensions affect their volume only at very high concentrations in the gas phase.

is caused to propagate along the walls of a container containing fluid 1. on the wall of the container The amount of attenuation of Lamb waves 3 in the flow depends on the distance traveled by those Lamb waves and the fluid being studied. 1 and the concentration of the solid phase. The amount depends on the solid phase particle size and bubble concentration. No (because the mass of the bubbles is small).

Ultrasonic vibrations 2 pass through the fluid 1 being studied, and Lamb waves 3 pass through the fluid 1 being studied. After traveling a predetermined distance along the wall of the container containing the ultrasonic vibration amplitude 4 and the ram The amplitude 5 of the wave is measured. The logarithm 6°7 of the measured amplitude 4,5 is calculated and calculated A difference of 8 is calculated between the logarithms obtained.

The value 9 is 5-(S2-81)/S1 be equivalent to. Here, Sl is along the wall of the container containing the fluid 1 being studied. The logarithm of the amplitude of the Lamb wave 3 that has traveled a given distance, S2, is the The logarithm of the amplitude of the acoustic vibration 2 is the critical particle size of the solid phase of the slurry 1 being studied. concentration, i.e., crushed particles with dimensions larger than a preset critical dimension. is the concentration ω of the particles of the substance.

To measure the amount, the sound flow and radiation pressure of acoustic radiation 10 are is formed in the fluid 1 being studied under the action of motion. Sound flow of acoustic radiation 10 and radiation pressure are controlled by varying the amplitude 11 of the strong ultrasonic vibrations. However, Thus, they can act on different parts of the fluid 1 being studied. Then, strong The value So for the studied fluid without the action of forceful ultrasonic vibrations and the strength is known. The ratio 12 of the sound flow of acoustic radiation 10 and the same value S with the effect of radiation pressure is calculated. The concentration of useful components in a small fraction of the critical particle size of the slurry has been studied. characterize.

The concentration of the gas phase is commensurate with the concentration of the solid phase (this is very rare in practical applications). ), in order to increase the measurement accuracy of the parameters of the solid phase of the slurry, , double processing of the studied fluid 1 with sound flow and radiation pressure of acoustic radiation 10 It is preferable. In the first stage, the gas phase is before the fluid under study 1 is introduced into the region where the parameters of the solid phase are measured. This is done in a second step, as described above, where the fluid being studied is The same process can be used to measure the concentration of useful components in a fraction of the critical particle size of It will be done.

The concentration of the solid phase and the small critical particle size of the solid phase for slurries containing a high content of gas phase. The accuracy of the measurement of the concentration of the part can be increased in other ways.

For that purpose, the shape of the pulses of ultrasonic vibrations 2 through the fluid 1 being studied and , of a Lamb wave 3 that has traveled a given distance along the wall of a container containing the fluid being studied. Changes in shape are analyzed.

Under the action of the inertia of the fluid 1 being studied, the original shape of the pulse is changed. radiation If the generated pulse is square, the leading edge gradually rises and the trailing edge gradually falls. Distortion appears as the distance increases. The actual slurry inertia depends on the slurry concentration and the slurry Depends on the grade of the solid phase of the rally. The reason is that the mass of crushed particles is This is because it is many orders of magnitude larger than the quantity.

The particles of the crushed material move with the liquid through the ultrasound field. The quality of this movement is super Depends on the frequency of the sonic vibration and the particle size. Ultrasonic vibration even when particle size increases If the frequency of is constant, or if the particle size of the crushed material is constant, the particles will It lags more and more behind the moving liquid.

The difference in inertia of the materials being studied is due to the ultrasonic vibrations through the fluid being studied 1 2 and the change in the shape of the pulses along the walls of the vessel containing the fluid 1 being studied. It is shown by the change in the shape of the Lamb wave 3 that has traveled a predetermined distance, and the frequency of the vibration and the slurry Depends on the concentration and grade of the solid phase.

After the amplitude 4 of the ultrasonic vibration 2 and the amplitude 5 of the Lamb wave 3 are measured, two levels 13 ．． 14 (FIG. 2) is formed. the length of those pulses at those levels Measure.

For that purpose, the amplitude of the received pulses is sequentially limited. Measuring the received pulse The ratio between the amplitude 4.5 and the absolute value of the amplitude of this value is a constant value. limit level 15.16 is selected.

The length 17 of the ultrasonic vibration 2 through the fluid 1 being studied and the fluid being studied The length 18 of the Lamb wave 3 that has traveled a predetermined distance along the wall of the container containing 1 is After measuring at level 13.14, each pulse at two levels 13°14 A length difference of 19.20 is calculated.

A Lamb wave that has traveled a given distance 1 along the wall of a container containing the fluid 1 being studied The difference in pulse length 20 characterizes the solid phase concentration of the slurry.

Difference in pulse length 17.18 of ultrasonic vibration 2 through the fluid 1 being studied 19 and a line that has traveled a predetermined distance 1 along the wall of the container containing the fluid 1 being studied. The ratio 21 to the pulse length difference 20 of the wave 3 is the critical particle size fraction of the slurry. Represents concentration.

Measure the parameters of the solid phase of the slurry and the concentration of critical particle dimensions of the solid phase of the slurry The device for carrying out the method has two measurement channels I and ■.

The first measurement channel ■ is the one-shot multivibrator 22 and the pulse a transmission ultrasonic transducer 24, a delivery ultrasonic transducer 24, and a delivery ultrasonic transducer 23; ser 25, delivery pulse amplifier 26, electronic switch 27, and logarithmic converter 28. Consists of a series circuit including. Trigger one-shot multivibrator 22 The series circuit connected to the input terminal is a one-shot delay multi-by-break 29 , a differentiator 30 , an amplitude limiter 31 , and a forming one-shot multivibrator 3 2. The output terminal of its formation one-shot multi-by-break is an electronic switch. 27 is connected to the second input terminal of circuit 27.

The second measurement channel ■ has a trigger φ one-shot multivibrator 33 and a pulse a transmitting ultrasonic transducer attached to the first forming prism 36; user 35 and a receiving ultrasonic transducer attached to the second forming prism 38. the receiver pulse amplifier 39, the electronic switch 40, and the logarithmic converter 41. Consists of a series circuit including.

Series connected to the input terminal of the trigger one-shot multi-by-break 33 The circuit includes a one-shot delay multi-by-break 43, an amplitude limiter 44, and a forming unit. and a multi-bye break 45. Its formation one-shot multi-bi The output terminal of the blator is connected to a second input terminal of electronic switch 40.

Multivibrake 46 is a trigger reference one shot multivibrator 22.23 connected to the input terminal of Measurement channel 1. ■ Logarithmic converter between 28 and 41 A calculator 47 is connected. The output terminal of that subtracter goes to one input terminal of the divider 48. Connected. The second input terminal of the divider 48 corresponds to the logarithmic variable of the second measurement channel H. It is connected to the output terminal of converter 41.

The transmitting ultrasonic transducer 24 of the first measurement channel and the receiving ultrasonic transformer The flow in which the deducer 25 and the formation of the second measurement channel 36.38 are studied. It is attached to a container 49 containing the body 1.

Multivibrator 46 generates pulses. Each pulse is a trigger one shot Trigger the pulse generator 23.34 via the multivibrator 22.33 and A rectangular pulse is formed that electrically oscillates at a constant frequency. Pulse generator 23.34 is operating, i.e. the time by which the length of the square pulse is formed is the pulse formed by the trigger one-shot multi-by-break 22.33 Depends on the length of the thread.

A transmitting ultrasonic transducer 24.35, for example a piezoelectric transducer, is Due to the inverse piezoelectric effect, ultrasonic transducers transmit electrical vibrations into their contact converts the fluid into ultrasonic vibrations.

The first transmitting ultrasound transducer 24 is a volume containing the fluid 1 being studied. It is attached directly to the wall of the container 49 and produces ultrasonic longitudinal vibrations 2 in the wall material of the container.

The ultrasonic longitudinal vibrations are radiated into the slurry 1 being studied.

The wavelength of the ultrasonic vibration 2 emitted by the transmitting ultrasonic transducer 24 is determined by research. selected to be comparable (corresponding) to the particle size of the solid phase of fluid 1 being Ru.

The frequency of the ultrasonic vibrations thus formed resonates at such frequencies The dimensions must be such that there are no bubbles (high enough) You should be careful. In this case, ultrasonic vibrations 2 through the fluid 1 being studied The attenuation of is determined approximately only by the dimensions of the solid phase particles and the concentration of those particles. Ru.

In order to measure the concentration of the solid phase, the walls of the container 49 containing the fluid 1 being studied The amount of attenuation of the Lamb wave 3 that has traveled a predetermined distance along is measured. Forming that Lamb wave 3 A shape fixed to the wall of the container 49 containing the fluid 1 being studied A transmitting ultrasonic transducer 35 is attached to the forming prism.

Ultrasonic vibrations 2 form a prism on the wall of a container 49 containing the fluid 1 being studied The angle radiated through 36 is selected to generate a Lamb wave 3 within its walls. Ru.

As the Lamb wave 3 propagates through the wall of the container 49 containing the fluid 1 being studied, The amount of attenuation of those Lamb waves is determined only by the concentration of the solid phase of the slurry.

The receiving ultrasonic transducer 25 uses the current flow that is being studied due to the direct piezoelectric effect. Ultrasonic vibrations 2 passing through the body 1 are converted into electrical vibrations. This same process is used in research Lamb waves 3 that have traveled a predetermined distance along the wall of the container 49 containing the fluid 1 This occurs in the receiving ultrasonic transducer 37.

The received pulses are amplified in an amplifier 26.39 before being applied to an electronic switch 27.4. given to 0.

The pulse formed by the multivibrator 46 is a one-shot delay multivibrator. Trigger blator 29.42. Those one-shot delay multi-vibration generates a square pulse. The length of those square pulses is determined by the fluid being studied. 1 is the minimum time for the ultrasonic vibration 2 to travel and the container containing the fluid 1 being studied 49 walls for a predetermined distance 1.

Positive square pulse formed by one-shot delay multi-by-break 29°42 A differentiator 30° 43 differentiates the These pulses are two consecutive short positive pulses. and negative pulses. The amplitude limiter 31°44 passes only the second negative pulse. . That negative pulse triggers a one-shot forming multivibrator 32.45 . Length of pulse formed by forming one-shot multi-by-break 32.45 contains information about the pulses of ultrasonic vibrations 2 passed through the fluid 1 being studied. a predetermined distance 1 along the wall of the container 49 containing the fluid 1 being studied. so that it matches the part containing the information of the Lamb wave 3 pulse advanced by and is selected.

The pulse formed by the forming one-shot multivibrator 32.45 is an electronic Gate open switch 27.40. Then those electronic switches will be researched. a part containing information about the pulse of the ultrasonic vibration 2 that has passed through the fluid 1; traveled a predetermined distance 1 along the wall of a container 49 containing the fluid 1 being studied. Only the part containing the pulse information of Lamb wave 3 is passed.

traveled a predetermined distance 1 along the wall of a container 49 containing the fluid 1 being studied. The amplitude of the Lamb wave 3 characterizes the concentration of the solid phase of the slurry.

A logarithmic converter 28.41 converts the logarithm of the amplitude of the signal passed through the electronic switch 27.40. calculate.

A subtractor 47 calculates the logarithmic difference of the measured amplitudes, and a divider calculates the value of S.

The concentration of the solid phase of the fluid being studied, the concentration of the critical particle size fraction, and the critical particle size The concentration of useful components in a small fraction of the solid phase of the slurry can be measured. The device implementing the method for measuring parameters also has two measurement channels (Fig. 4). ).

The first measurement channel includes a pulse generator 23 and a transmitting ultrasonic wave attached to a waveguide 50. The wave transducer 24 and the delivery ultrasonic transducer attached to the waveguide 51 It consists of a series circuit including a receiver pulse amplifier 25, a received pulse amplifier 26, and a pulse expander 52. will be accomplished.

The second measurement channel includes a pulse generator 34 and a transmitter attached to the forming prism 36. A receiving ultrasonic wave transducer 35 and a receiving ultrasonic wave attached to a forming prism 38 Includes a transducer 37, a received pulse amplifier 39, and a pulse expander 53 Consists of a series circuit. The receiving pulse amplifier 26 of the first measurement channel and the second measurement channel The constant channel receiving pulse amplifier 39 constitutes a logarithmic amplifier.

The input of the subtractor 47 to the output of the pulse stretchers 52, 53 of both measuring channels child is connected. The output terminal of the subtractor is connected to one of the input terminals of the divider, The second input terminal of the divider is the output terminal of the pulse stretcher 53 of the second measurement channel. Connected to child.

The output terminal of the first divider 48 is connected to the first electronic switch 27 and the second electronic switch. 40, respective second inputs of the third electronic switch, and the fourth electronic switch. Connected to the terminal. A first input terminal of each electronic switch is connected to a first delay line 56 and a first input terminal. through the second delay line 57, the third delay line 58, and the fourth delay line 59, respectively. It is connected to the first four output terminals of decoder 60. Those output terminals are It is also connected to the input terminal of port 61. The output terminal of that OR gate is the fifth delay line and the pulse generator 23. of both measuring channels via a sixth delay line. Connect to 34 be done.

A first output terminal is connected to a second output terminal, a third output terminal, and a fourth output terminal of the decoder 60. One-shot multi-vibration 64 and second one-shot multi-vibration The motor 65 is connected to a third one-shot multi-by-break 66. those The output terminal of the one-shot multi-by-break is the input terminal of the first OR gate 67. Connected to child. The output terminal of the first OR gate is connected via a third generator 68. It is connected to a third transmitting ultrasonic transducer 69 .

A first electronic switch 27, a second electronic switch 40, and a third electronic switch. , a fourth electronic switch and an amplitude detector 70 to respective output terminals of the second amplitude First inputs of the detector 71, the third amplitude detector 72, and the fourth amplitude detector 73 The terminals are connected. The second input terminals of those electronic switches are the second input terminals of the decoder 60. The output terminals of those electronic switches are connected to the output terminals of the fifth electronic switch. 74, a sixth electronic switch 75, a seventh electronic switch 76, and an eighth electronic switch 74. It is connected to a first input terminal of switch 77 .

The first input terminal of the second divider 78 is connected to the output terminal of the fifth electronic switch 74. be done. A second input terminal of the second divider 78 is connected to a sixth electronic switch 75; Connected to the output terminals of the seventh electronic switch 76 and the eighth electronic switch 77 . The second input terminal of those electronic switches is the fifth one-shot multivibrator. motor 79, a sixth one-shot multivibrator 80, and a seventh one-shot multivibrator 80. the fifth output terminal of the decoder 60 and the sixth output terminal via the multivibrator 81. connected to the output terminal, the seventh output terminal, and the input terminal of the second OR gate 82 . The output terminal of the second OR gate is connected to the fourth one-shot multivibrator 8. 3 to the second input terminal of the fifth electronic switch 74.

A counter 84 is connected to the input terminal of the decoder 60.

That counter is connected to a one-shot multi-by-break 46.

A third transmitting ultrasonic transducer 69 is installed in a volume containing the fluid 1 being studied. It is attached to the upper part of the container 49.

At the bottom of the container 49 there is a transmitting ultrasound transducer 24 of the first measurement channel. and a waveguide 5,0.51 supporting the receiving ultrasonic transducer 25, and a second measurement Transmitting ultrasonic transducer 35 and receiving ultrasonic transducer 3 of fixed channels A forming prism 36,38 supporting 8 is provided.

The forming prisms 36, 38 are attached to the walls of the container 49 containing the fluid 1 being studied. It can also be mounted on a measuring plate that closes the longitudinal opening provided.

The apparatus shown in Figure 4 for measuring the parameters of the solid phase of the slurry is as follows. It works like this.

Multivibrator 46 generates square pulses. That square pulse is 84 and a decoder 60 having eight input terminals. given to the distributor. Therefore, one control cycle consists of eight processes. Ru. In the first step, the pulses from the first output terminal of the decoder 60 are The first pulse is generated via the gate 61, the fifth delay line 62, and the sixth delay line. 23 and the second pulse generator 34 to trigger those pulse generators. Ru. To reduce interference between measurement channels, the delay line 62.63 The pulse delay time is the start of the first pulse generator 23 and the second pulse generator 34. is chosen in such a way as to ensure a time lag between the periods. Those pulse generation When triggered, the device emits a series of high-frequency electrical vibrations at a predetermined frequency and a predetermined pulse length. Occur.

For example, ζ (a piezoelectric type ultrasonic transducer 24, 35 transmits an electrical signal to These transducers convert into elastic vibrations of the medium they are in contact with.

The first transmitting ultrasonic transducer 24 transmits the ultrasonic vibrations 2 through the first waveguide 50. attached to the second waveguide 51 into the fluid being studied in the container 49. It is sent toward the delivery ultrasonic transducer 25 located there.

The second transmitting ultrasonic transducer 35 transmits the Lamb waves 3 to the first forming prism 36. It is formed in the wall (or measuring plate) of the container 49 via. Those Lamb waves 3 are After passing through the second forming prism 38, the wave is transferred to the second receiving ultrasonic transducer 37. It is more acceptable.

The high frequency ultrasonic vibration 2 is transmitted from the first transmitting ultrasonic transducer 24 to the first delivery ultrasonic transducer 24. The amount of attenuation of the ultrasonic vibration when it is sent to the sonic transducer 25 is determined by It depends almost only on the particle size and the concentration of the solid phase.

traveled a predetermined distance 1 along the wall of a container 49 containing the fluid 1 being studied. The amount of attenuation of the Lamb wave 3 depends only on the concentration of the solid phase of the slurry.

Ultrasonic (elastic) vibrations 2 passing through the fluid being studied 1 and the fluid being studied The Lamb wave 3 that has traveled a predetermined distance along the wall of the container 49 containing the The vibration is converted into elastic vibration by the vibration damper 25.37.

The high frequency elastic vibrations are logarithmically amplified and detected in the logarithmic amplifier 26.39. It will be done. If the pulses formed are short in length, they are passed through the pulse stretcher 52. 53, it is expanded without changing the amplitude.

The logarithmic difference of the received signals is determined in a subtracter 47, and a first divider 48 Calculate the value.

traveled a predetermined path Ml along the wall of the container 49 containing the fluid 1 being studied. The amplitude of the Lamb wave 3 characterizes the concentration of the solid phase of the studied fluid 1, and the value of S is the concentration of the critical particle size fraction of slurry 1.

Pulses from the first output terminal of decoder 60 pass through first delay line 56 to first The electronic switch 27 is gate-opened. The delay time in the first delay line 56 is The time it takes the ultrasonic vibrations to travel through the fluid 1 being studied and the time it takes for the ultrasonic vibrations to travel through the fluid 1 being studied Determined by the time the Lamb wave 3 travels within the wall of the container 49 containing the product, and divided by the value of S. The first electronic switch 27 is gated open by the calculated time in the device 48. The delay time is selected in this way.

The first amplitude detector 70 is S. hold (“store”) the value of .

The second control process, third control process, and fourth control process are the same as the first control process. It is carried out as follows. The reason is that the second output terminal of the decoder 60 and the third output terminal a second pulse, a third pulse, and a fourth pulse from the terminal and the fourth output terminal. This is because the signal triggers the pulse generator 23.24 via the OR gate 61.

At the same time, each of those pulses causes a first one-shot multi-by-break 64 , the second one-shot multi-by-break 65, and the third one-shot multi Trigger the vibrator 66. Those one-shot multi-bye breaks are on A third generator 68 is triggered via the agate 67. That third generator is powerful form electric vibrations. Those electrical vibrations are transmitted to a third transmitting ultrasonic transducer. 69, the vibration is converted into an elastic vibration of the fluid.

The sound flow and radiation field of the acoustic radiation 10 are caused by the strong ultrasonic vibrations thus formed. The solid phase particles in the fluid 1 that are generated and studied under the action of the fluid 2 are measured in the first Direction towards the wall of the container 49 attached to the channel forming prism 36.38 At this time, it is moved away from the six third transmitting ultrasonic transducers.

As the solid phase particles move, a second measurement channel forms a prism with the dimensions of the solid phase particles. between the area close to the waveguide 36.38 and the waveguide 50.51 of the first measurement channel. The distribution of solid phase particles is changed depending on the region and the concentration in the region.

Particles of the same size at a predetermined distance from the third transmitting ultrasonic transducer 69 The amount of redistribution of those parameters to .

In reality, the particle material is a combination of several components, one of which One component is a useful component, and the concentration of that useful component is measured.

Since the specific gravity of useful ingredients is known, it is made up of only those ingredients and has a high strength. Acoustic radiation 10 is a particle of known size that is affected only by the sound flow and radiation pressure. The amount of child movement is determined by analysis or experimentation.

The strength of the effects of these factors is determined by the third transmitting ultrasonic transducer 69. Changes due to changes in amplitude or length when strong ultrasonic vibrations are applied do.

If the effect of strong ultrasonic vibration is parametric with constant amplitude, The sound flow and radiation pressure of the acoustic radiation 10 formed by the ultrasonic vibrations of the slurry The effect of the solid phase on the particles depends on the length of the parameter.

A first one-shot multivibrator 64 and a second one-shot multivibrator formed by a rotor 65 and a third one-shot multivibrator 66. The length of the parameter is such that the sound flow and radiation pressure of the acoustic radiation 10 Sufficient to move a small fraction of particles with critical particle size of three or more types of phases is selected so that

The calculated value of S for each case (S', Sm, Sm) is generated at the second to fourth output terminals, delayed by delay lines 57, 58, 59, and then The first electronic switch 40 whose gate is opened by the applied pulse and the third electronic switch 40 the first amplitude detector 71 via the child switch 54 and the fourth electronic switch 55; , to a second amplitude detector 72 and a third amplitude detector 73.

Those amplitude detectors hold the amplitude. The delay time of delay line 57°58.59 is It is selected with the same consideration as was given for delay line 56.

The pulses given from the fifth to seventh output terminals of the decoder 60 are 6th to 8th electronic switches via shot multivibrator 79.80.81 Open the gate to Chi.

Each pulse from the fifth to seventh output terminals of the decoder 60 is connected to a second OR gate 82. The fifth electronic switch 74 is activated via the fourth one-shot multivibrator 83. Open the gate. The values of S and Sm, S and Sm, and S and Sm are applied to the first divider. is given, and the concentration of the useful component is calculated in that divider.

Yet another embodiment of an apparatus for measuring parameters of the solid phase of a slurry is shown in FIG.

This embodiment also has two measurement channels.

The first channel includes a pulse generator 23, a power amplifier 85, and a transmitting ultrasonic transformer. a series circuit including a transducer 24, a receiving ultrasonic transducer 25, and a receiving ultrasonic transducer 25; The signal amplifier 28, the electronic switch 27, the logarithmic converter 28, the delay line 56, and the 1 amplitude limiter 31, a first circuit 86 that controls the clock 87, and various limitations. a unit 88 for calculating the difference in pulse length at the level; Be prepared.

A blocking oscillator 89 is connected between the pulse generator 23 and the electronic switch 27. , a limit level selecting unit 90 includes the logarithmic converter 28 and the first amplitude limiter 31. connected between.

The second amplitude limiter 44 and the clock 92 are connected to the output terminal of the first amplitude limiter 31. A second circuit controlling the signal is connected. The clock 92 forms a series circuit. the An output terminal of clock 92 is connected to a second input terminal of calculation unit 88 . versus a second unit for selecting a limiting level between the number converter 28 and the second amplitude limiter 44; connected to port 93.

The second measurement channel includes a pulse generator 34, a power amplifier 94, and a transmitting ultrasound transducer. transducer 35, receiving ultrasonic transducer 37, and receiving pulse amplification 39, an electronic switch 40, a logarithmic converter 41, a delay line 57, and a third amplitude A limiter 95, a third circuit 95 that controls the taro clock 97, and various limit levels. and a series circuit comprising a unit 98 for calculating the difference in the length of the pulses.

A blocking oscillator 99 is provided between the pulse generator 34 and the electronic switch 40. Ru. A third unit 100 for selecting a limit level includes a logarithmic converter 41 and a third amplitude It is provided between the restrictors 95. The fourth amplitude limiter 101 and the clock 103 are controlled. A series circuit including a fourth circuit for controlling the amplitude is connected between the third amplitude limiter 95 and the subtracter 98. provided.

A fifth unit 104 for selecting a limit level selects a logarithmic converter 41 and a fourth amplitude limiter. It is provided between the containers 101.

A subtractor 47 is used to calculate the difference in pulse length at various restriction levels. It is provided between the knits 88 and 98. The output terminal of the subtracter 47 is one of the dividers 48 is connected to the input terminal of the divider, and the second input terminal of the divider is connected to the input terminal of the divider. is connected to the output terminal of a unit 98 for calculating the difference in length of the pulses. Swish is connected to the switching circuit 46. The ultrasonic transducer is transmitted to the forming prism 36. The delivery ultrasonic transducer 37 is attached to the forming prism 38. Installed. The measuring plate 106 closes the longitudinal openings 107 of the four walls of the measuring container. ingredient.

This device operates as follows.

The pulse generators 23.34 generate square pulses filled with sinusoidal oscillations. first The frequencies of the oscillations produced by the pulse generator 23 in the measurement channel l are such that the wavelength of the vibrations corresponds to the particle size of the solid phase in the fluid 1 being studied. selected.

The sine wave electric vibration amplified by the power amplifier 85.94 is converted into ultrasonic elastic vibration of the medium. radiated into the fluid 1 being studied by the transmitting ultrasonic transducer 24. and is transmitted through the forming prism 36 by the transmitting ultrasonic transducer 35. in the walls of the vessel 49 or along the length of the measuring vessel 49 containing the fluid 1 being studied Direction opening special table Showa 63-502298 (11) 107 is emitted into the measurement plate 106 which blocks it. Do that and the ram in that fluid 1 Wave 3 is induced.

Blocking due to the leading edge of the square pulse generated by the pulse generator 23.34 The triggering oscillator 89.99 is triggered and the pulse formed thereby causes the electronic switch Open the gate at 27°40. To this end, the received signal amplification is performed during selected times. Signals from devices 26.39 can pass through those electronic switches.

The logarithmic converter 28.41 calculates the logarithm of the amplitude of the pulse passed through the electronic switch 27.40. form a pulse with an amplitude proportional to .

The received pulse passes through a delay line 56.57 and is applied to a variable amplitude limiter 31.95. Ru. The delay time of the arrival of the pulse is determined by the characteristics of the units 90 and 100 for selecting the limit level. Depends on gender. Those units record the current value of the amplitude of the received pulse and Form the limit level according to a preset value of the ratio of the pulse amplitude and the limit level do. changes proportionally to the ratio between this level and the pulse amplitude, which remains unchanged. . Therefore, when the ultrasonic vibration 2 passes through the fluid 1, it is caused by various factors. The length of the received pulse at the measurement level at which variations in the attenuation of ultrasonic vibrations 2 were formed along the walls of the container 49 containing the fluid 1 being studied. The fluctuations in the attenuation of the Lamb wave 3, which has traveled a distance of 1, are reflected at the measurement level at which it was formed. This makes it possible to avoid effects on the length of the pulse.

The variable amplitude limiters 44 and 101 are connected to units 93 and 104 for selecting the limit level. In combination, they form a second restriction level of the received pulses. clock control circuit 86°91.102 is clocked by the time when limiting the amplitude of the received pulse begins. pulses 87, 92, 97, 102 and the amplitudes of their pulses begin to decrease. becomes incapacitated when

A first unit 88 for calculating the difference in pulse lengths at various restriction levels comprises: The pattern of ultrasonic vibrations 2 through the fluid 1 being studied at the measurement level formed Calculate the pulse length difference α and calculate the pulse length difference at various restriction levels A second unit 98 that is attached to the wall of the container 49 containing the fluid 1 being studied The difference β between the pulse lengths of the Lamb wave 3 that has traveled a predetermined distance 1 along the line is calculated. The difference α−β is calculated in subtractor 47.

Calculate the value of So characterizing the concentration of the critical particle size fraction of the solid phase of the slurry: 5o-(α-β)/β The value of So is converted into a standard form and standard value signal in the conversion unit 104. will be replaced.

Therefore, the apparatus and method of the present invention for measuring parameters of the solid phase of a slurry The concentration of the solid phase, the concentration of the critical particle size fraction of the solid phase, and the concentration of the studied slurry The concentration of useful components in the critical particle size fraction of the Can be measured by a non-contact method without prior removal of the gas phase from the slurry. made possible. All of this contributes to increased measurement accuracy and reliability, and Reducing the cost of equipment for measuring the parameters of Lee's solid phase and reducing the operating costs of the equipment. Contribute to reduction.

industrial applicability The method and apparatus of the present invention for measuring parameters of the solid phase of a slurry comprises a gas-containing sample to determine the grain-to-grain concentration, size and mineralogical composition of the ground material. Advantageously used in the mining and ore processing industry, chemical construction and adjacent industries.

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Claims (1)

[Claims] 1. The process of forming ultrasonic vibration pulses (2) and the process containing slurry have been studied. The process of passing those pulses through the fluid (1) and the ultrasonic waves passing through the fluid (1) A process of measuring the amplitude of the wave vibration (2), and measuring the parameters of the solid phase of the slurry. In this method, we study the process of forming Lamb waves (3) and those Lamb waves. the process of transporting the fluid (1) along the wall of the container containing the fluid (1) to be studied; The amplitude of a Lamb wave sent a given distance along the wall of a container containing slurry. The process of measuring the amplitude characterizing the concentration of the solid phase in the fluid being studied (1) containing the logarithm (6,7) of the measured amplitude of the ultrasonic vibrations passed through and the fluid being studied. Measurement of the logarithm difference (8) of the Lamb wave that has traveled a given distance along the wall of the container in which the Lamb wave is located. (9) of the critical particle size of the solid phase of the slurry. a step of calculating the ratio (9) corresponding to the concentration of the slurry. A method for measuring solid phase parameters. 2. 2. A method according to claim 1, characterized in that acoustic radiation is present in the fluid (1) to be studied. (10) The sound flow has an intensity proportional to the mass of the particles in the solid phase of the slurry. The process of forming radiation pressure, the sound flow of acoustic radiation (10) and the intensity of radiation pressure Calculated ratio of some constant values (11) and the same values obtained without those elements and determining the quotient (12) of the division of the slurry to be studied. characterized by characterizing the concentration of useful components in a small fraction of the critical particle size of Law. 3. A method according to claim 1, characterized in that ultrasonic vibrations are passed through the research fluid (1). Measurement of the pulse length of the motion (2) and the wall of the vessel containing the fluid to be studied (1) Two levels (13, 1 4) by sequentially limiting their amplitude and the length of their pulses. The level of measurement of is varied proportionally to the amplitude of those pulses, thus shaping The length of the pulse received at the level created is measured and contains the fluid (1) to be studied. The difference (19 ) is calculated to characterize the concentration of the solid phase of the slurry and also the fluid being studied (1) The difference in measured values (19) for the ultrasonic vibrations (2) that passed through the a given distance along the wall of the container containing the fluid (1) to be studied without the action of injection pressure. The ratio (21) of the measured value difference (20) to the Lamb wave (3) that has advanced by the distance is also calculated. represents the concentration of a critical particle size fraction of the solid phase of the slurry. . 4. A pulse generator (23, 34) and a transmitting ultrasonic transducer (24, 35) ), a receiving ultrasonic transducer (25, 37), and a receiving signal amplifier (26, 39) comprising two measurement channels I and II, each having a series circuit comprising: The transmission ultrasonic transducer (24) and the delivery ultrasonic transducer of one measurement channel The sducer (25) is placed directly against the wall of the container (49) containing the fluid (1) to be studied. In equipment that measures parameters of the solid phase of slurry that is fixed directly, the received signal is increased. a logarithmic converter (28, 41) connected to the output terminal of the width converter (26, 39); a subtractor (47) having an input terminal connected to the output terminal of the logarithmic converter of the channel ), and the output terminal of this subtracter (47) and the logarithmic converter (41) of the second measurement channel. ) and a divider (48) having an input terminal to which the output terminal of the The transmitting ultrasonic transducer (35) of the second measurement channel and the receiving ultrasonic transducer (35) of the second measurement channel The sonic transducer (37) is connected to a container (4) containing the fluid (1) to be studied. 9) to be mounted on forming prisms (36, 38) fixed to the wall; Apparatus for carrying out the method of claim 1, characterized in: 5. Device according to claim 4, comprising a fluid (1) to be studied. A wall of the container covering an opening (107) extending longitudinally within the wall of the container (49) The forming prism (36, 38) is attached to the plate (106) fixed to the A device that does this. 6. 6. The apparatus according to claim 4 or 5, wherein each measurement channel has a pulse The input terminal of each expander includes a receiving pulse amplifier (26, 53). , 29), and the output terminals of the pulse stretchers (52, 53) are used for subtraction. of the second measurement channel pulse stretcher (53). Device characterized in that the output terminal is connected to the input terminal of a divider (48). 7. The device according to any one of claims 4 to 6, wherein the device A cable having an input terminal connected to an output terminal of a received signal amplifier (26, 39) of the cable. The counter (84) and its own delay line (6) are connected to the input terminals of the pulse generator (23, 34). 2, 63) and an OR gate (61) having an output terminal connected through the counter The input terminal connected to the output terminal of the gate (84) and the input terminal of the OR gate (61) Cooperates with a decoder (60) and an OR gate (61) with connected output terminals and a circuit that controls the measurement process and the calculation of the parameters of the solid phase of the slurry. A device characterized by: 8. Apparatus according to claim 6, characterized in that the parameters of the solid phase of the slurry to be studied are The circuit that controls the measurement process and calculation of the data includes a second OR gate (67) and a second OR gate (67). 3 pulse generator (68) and the forming prism (36, 38) The two initially mentioned transducers (24, 35) mounted on ) a third transmitting transducer (69) fixed above and on the opposite side of the The input terminal of the second OR gate (67) is its own Through the one-shot multipibrator (64, 65, 66) It is characterized by being connected to the input terminal of the decoder (61) and the output terminal of the decoder (60). A device that does this. 9. An apparatus according to claim 6 or 7, which controls a necessary process. , the circuit for calculating the parameters of the solid phase of the slurry studied consists of a delay line (56) and , a first electronic switch (27), an amplitude detector (70), and a second electronic switch (74, 75, 76, 77) and a second divider (78). Both have four identical series circuits, and the input terminal of the divider has all of these series circuits. The output terminal of the divider is connected, and the output terminal of the divider is the data output terminal of the whole device. Yes, the output terminals of at least three series circuits are connected together, and all series circuits The input terminal of the delay line (56) is connected to the input terminal of the decoder (60), and each circuit The data input terminal of the first electronic switch is connected to the output terminal of the first divider (48). and the control input terminal of the second electronic switch (74) of the first circuit is connected to the OR game. (82) and one-shot multipibrator (83). Connected to the fifth output terminal, sixth output terminal, and seventh output terminal of the decoder (60). connected to the control input terminals of the second electronic switches (75, 76, 77) of the remaining circuit. is decoded via each one-shot multivibrator (79, 80, 81). is connected to the output terminal of the coder (60), and the output terminals of the other series circuits are connected together. The control input terminals of the amplitude detectors (70, 71, 72, 73) in each circuit are A device characterized in that it is connected to an output terminal of a decoder (60). 10. 5. The apparatus according to claim 4, wherein in each measurement channel a logarithmic variable is detected. The output terminal of the converter includes a delay line (56, 57), an amplitude limiter (31, 95), Control circuit (86, 95) and calculation of pulse length differences at various restriction levels A series circuit including the units (88, 89) is connected, and each output terminal is connected to an input terminal of a subtracter (47). 11. An apparatus according to claim 9, characterized in that it forms a restriction level. each circuit has two identical circuits for selecting the limit level ( 90, 100), a second amplitude limiter (44, 101), and a timer control circuit (92 , 103), and the input terminal of the unit is the logarithm of each Connected to the output terminal of the converter (28, 41), the output of the unit (90, 100) The terminals are connected to the control input terminals of the respective amplitude limiters (31, 95), and the timer The input terminals of the control circuit are connected to the respective units (88 , 98), and all circuits are connected to the input terminals of the respective amplitude limiters (31, 98). 5). 12. 10. The apparatus according to claim 10, wherein in each measurement channel, a pair of a second unit (9) that selects a limit level to the output terminal of the number converter (28, 41) 3, 104), and the output terminal of that second unit is connected to the respective second vibration A device characterized in that it is connected to a control input terminal of a width limiter (44, 101).