SU1542619A1 - Apparatus for controlling electric hydraulic crusher - Google Patents

Abstract

The invention relates to crushing, using an electrohydraulic effect for mechanical action on a material, allows for improved control accuracy and productivity. The device contains electrodes 1 located in the crusher 2 tank, current sensors 3, high-voltage pulse generators 4, switch 5, three-phase AC source 6, switch control unit 7 consisting of a reference frequency generator 8, pulse distributor 9, three pulse drivers 10 , schemes 11 coincidence and triggers 12. 2 Il.

Description

The invention relates to crushing using an electrohydraulic effect to mechanically impact a material, such as activated carbon, to disintegrate it to convert catalyst carrier, and can be applied to process plants equipped with control systems of electrohydraulic apparatus contained therein. impact arising from both a spark discharge and a thermal explosion initiated by an electric current, and to which b are the requirements of moving in space to different volumes of the phase with the material being processed or to different parts of the workpiece being processed with or without changing the magnitude of the impact in a predetermined sequence in the time required for the operation of electro-hydraulic pumps, extruders, vibrators, resonant crushers for stamping , cleaning ship hulls from fouling, disinfection of biologically active wastewater, and d.

The purpose of the invention is to improve the control accuracy and productivity of the crusher.

FIG. 1 shows a functional diagram of the device; in fig. 2 - diagrams of operation of blocks included in the device.

The control unit of the electrohydraulic crusher contains electrodes 1, the number of which is taken to be, for example, the number I ;, the electrodes are located in the crusher tank 2, current sensors 3, high voltage generators 4 pulses, switch 5, three-phase AC source 6, control unit 4 with 4 switches including a reference frequency generator 8, a pulse distributor 9, three pulse drivers 10, coincidence circuits 11 and triggers 12, the number of which is equal to the number of electrodes 1. Switch 5 contains switching elements 13, numbers Lo which is equal to the number n of electrodes 1.

The device works as follows.

The generator 8 of the reference frequency gives clock pulses ira to the input of the distributor 9, the conversion factor of which is equal to or a multiple of the number n of the electrodes 1 of the capacitance 2, and the number of outputs is equal to n.

The pulses U pa are alternately distributed along the outputs ... n of the distributor 9 pulses. In this case, a single signal Up () at the (i + 1) output appears when the single signal U ,, disappears at the c-th output of the distributor 9 pulses, where / is the current value of the output number from 1 to n, and is removed clock (/ -) - 1) pulse Upll. In the initial position, the pre-recorded single signal

takes place, for example, at the output of the distributor 9.

When the first clock pulse (pa) appears, a single signal disappears from output n and appears at output 1 (Up)

distributor 9. At the next clock pulse, ir 0 and Up2, etc. When a pulse arrives at the input of the distributor 9 pulses, a single signal appears at its output n (Urp), and the distributor 9 pulses returns to its initial state, after which the work cycle is repeated.

The frequency of the pulse repetition cycle at each of the ... n outputs (Upt) distributes the bodies 9 pulses n times less than the frequency of the clock pulses (Upa) of the input a. Thus, the distributor 9 pulses produces sequential step-by-step periodic movement of the pulse along the outputs 1 ... n depending on the number of pulses arriving at the input.

Pulses (Ir,) from the outputs 1 ... n of the distributor 9 pulses are fed to the inputs

, circuits 11. Simultaneously, the formers 10, and connected to a three-phase source 6, at the instant of transition of the instantaneous value of the voltage of the phase of the three-phase source 6 of alternating current produce a pulse through the zero value at the outputs (Uf1;

0 and; LV3) synchronization, which are fed to the inputs of circuits II. At the moment of simultaneous presence of pulses, signals from (Ua) are output from both of the inputs of the P circuits, where / is the element number from I to n) to the inputs of the corresponding (ix) flip-flops 12, which put them in the “Enabled” state . At the same time, the outputs of the flip-flops 12 generate signals (Uri), which, through the inputs ... n of the switch 5, arrive at the control inputs of the corresponding (/) elements 13, switch them to an electrically conductive state and thus connect the three-phase source 6 to corresponding (/ th) generator 4.

After some definite period of time, the current after receiving the power, which is a characteristic of generator 4, the voltage of the generator (U) reaches a critical value and the generator 4 produces a current pulse (1 ri), which through (rth) current sensor 3 arrives to the corresponding (r-th) electrode 1 of the container 2 for crushing the material and causes in it the electro-hydraulic effect used to process the material. At the moment of passage of a pulse (Irt) of current, current sensor 3 generates a signal (Ј / D1-),

5 which enters the input of the corresponding (zth) trigger 12 and translates it into the Disabled state, as a result of which the output of the / th trigger 12 signals (Uri)

0

switch, three-phase AC source and the number of electrodes high-voltage pulse generators, characterized in that, in order to increase control accuracy and performance, it is equipped with a reference frequency generator, pulse distributor, three pulse shapers and the number of electrodes of coincidence circuits, triggers and sensors current, and a three-phase source

disappears, respectively, the signal from the corresponding control input of the / th element 13 of the switch 5 disappears, which causes the corresponding (dth) element 13 of the switch 5 between the three-phase 6 5 AC source and generator 4 to open circuit. As a result, the corresponding () generator 4 loses power and stops producing high-voltage current pulses.

Similarly, after passing 10 AC currents, the pulse generator is connected to the input of each current pulse to the electrodes 1 and the other generators 4 are connected to the first. Another switch inputs, the reference generator, turn on the alternators 4, the frequency is connected to the distributor input the pulses of the pulse generator 8, the first output of which is connected and the shapers of the pulses 10 in the indicated jg with the first input of the first coincidence circuit, of the same order as the output of which is connected to the first input

Thus, the device allows the first trigger, the second output is distributed by the running pulse electrohydraulic connected to the first input by a ram-stroke, cyclically moving the second coincidence circuit, the output of which is in the crusher's working space from the first trigger : electrode 1 at number 1 to electrode 20 pa, the third output of the distributor is connected at number n in a predetermined sequence with the first input of the third coincidence circuit, the output of which is connected to the first input of the third trigger and, each of the pulse output is connected to correlate in time. The time interval between movements of electrohydraulic shocks is determined only by the frequency and the switch, the three-phase source of alternating current and the number of electrodes of the high-voltage pulse generator, characterized in that, in order to improve the control accuracy and performance, it is equipped with a reference frequency generator, pulse distributor, three drivers pulses and by the number of electrodes by coincidence circuits, triggers and current sensors, the three-phase source

AC is connected to the input of each pulse generator and to the first inputs of the switch, the reference frequency generator is connected to the input of the pulse distributor, the first output of which is connected to the first input of the first coincidence circuit, the output of which is connected to the first input

the pulse rate of the generator 25 pulses is responsible for the second input of the matching circuits - 8 pulses and the recalculation factor of the distributor 9; The energy parameters of electrohydraulic shock pulses determine the parameters of generators 4.

For today, the output of each trigger is connected respectively to the second inputs of the switch, the outputs of which are connected respectively to the inputs of high-voltage pulse generators, the output of each high-voltage pulse generator is connected respectively to the input of each current sensor, which are connected respectively to the electrodes and to the second inputs of each trigger.

Claims (1)

Invention Formula The control unit of the electrohydraulic crusher, containing electrodes located in the crusher's tank, is connected to the second input of the circuits For today, the output of each trigger is connected respectively to the second inputs of the switch, the outputs of which are connected respectively to the inputs of high-voltage pulse generators, the output of each high-voltage pulse generator is connected respectively to the input of each current sensor, which are connected respectively to the electrodes and to the second inputs of each trigger. / 7 / 7ft L 2 / 7VJ