RU1812272C - Device for electrochemical soil consolidation - Google Patents

Abstract

Usage: construction of various structures on water saturated bonds. SUMMARY OF THE INVENTION: the device comprises a three-phase alternating current source with phases, injection electrodes, diodes, thyristors, capacitors; pulse shaper. 1 ill.

Description

The invention relates to the construction of various structures on water-saturated bonded soils. It can be used in the construction and operation of residential, industrial, hydraulic and other purposes.

The aim of the invention is to improve specific energy performance, to increase the accuracy and speed of soil consolidation, i.e. reduction of energy costs for electrochemical soil strengthening.

The drawing shows a diagram of a device for electrochemical soil stabilization.

The device contains a three-phase source of alternating current with three phases 1-3, three electrode-injectors 4, 5. and 6 with fixing solutions placed in the strengthened soil 7, four diodes 8-11, two thyristors 12, 13, five. capacitors 14-18 and a pulse shaper 19, containing two peak transformers 20, 21; two diodes 22, 23; two resistors 24, 25 and two capacitors 26, 27. Moreover, one of the plates of the first capacitor 14 is connected to the cathodes of the first 8 and second 9 diodes, one terminal of the first phase of the three-phase power supply is connected to the first 4 electrode-injector. Another plate of the first capacitor 14 is connected to the first electrode-injector 4; The second electrode injector 5 is connected to the first output of the signal driver 19t to one plate of the third capacitor 16 and to the cathode: the first thyristor 12, the control electrode of which is connected to the second output of the signal driver. Anode of the first thyristor 12 is connected to one plate of the second capacitor 15 and to the cathode of the third diode 10, the third electrode-injector 6 is connected to the third output of the signal driver 19, to one lining of the fourth capacitor 17 and to the cathode of the second thyristor 13, the control electrode of which is connected to The Fourth shaper output signals. The anode of the second thyristor 13 is connected to the cathode of the fourth diode 11 and to one of the plates of the fifth capacitor 18. - Anodes of the third 10 and fourth 11 diodes

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connected to one plate of the first capacitor 14. The first electrode-injector 4 is connected to one of the terminals of the second phase, the other terminal of the first phase and one of the terminals of the third phase are combined and connected to the first input of the first signal conditioner and to the other plates of the third 16 and second 15 capacitors and the anode of the first diode 8d. Other terminals of the second and third phases are combined and connected to the second input of the signal conditioner and to other plates of the fourth 17 and fifth of the 18 capacitors and the anode of the second diode 9.

The system works as follows ..

. The capacitor 14, after connecting the device, is charged to the linear voltage of the phases of the source and subsequently only mimics periodically (twice per period), restoring its capacity.

Capacitors 15 and 18 with a phase shift of 300 electrical degrees with respect to the charge pulses supplied to the capacitor 14 are charged to a voltage equal to the sum of the line voltage of the source and the voltage across the capacitor 16, i.e. up to double the line voltage of the source.

. At subsequent times, once per period, the voltage of the capacitor 15 and 18 will be summed with the linear voltage of the source and a charge pulse will be applied to the electrodes 4, 5 and 4, 6 once per period of the change in the supply voltage with a voltage amplitude of 3. The generated current pulses transport the ions of the component; strengthening soil.

The negative component of the asymmetric alternating current, which depolarizes the soil in the interelectrode space, is formed by currents flowing through the capacitor 16 and 17 under the influence of the corresponding linear voltage of the source. With a positive half-wave of the supply voltage of phase 1 along the circuit 1-8-14-4-1, the process of charging the capacitor 14 starts, after 90 electrical degrees this process ends and the capacitor 14 is charged to the amplitude of the linear voltage of the source. Since the capacitance of the capacitor 14 is at least an order of magnitude larger than the others, at subsequent times this capacitor will be in a charged state. The energy taken from him by discharge pulses,

will be restored in the above chain.

After 90 electrical degrees, when the voltage of phase 1 starts to decrease, it starts 5 with the charge of capacitor 15 with the total voltage of phase of the 1st capacitor 14 along the circuit: 1-4-14-10-15-1. This process will end after 270 electrical degrees from the reference point when the line voltage

0 will again reach its maximum value and the capacitor 15 will be charged to double the amplitude value of the linear voltage. After 360 electrical degrees from the reference point, the process of summing up the linear voltage of the source and capacitor 15 will begin. The maximum value of this voltage will reach 3UMa / where UMa is the amplitude value of the source voltage /, Control unit 19 generates a control pulse, which opens the valve 12 and a powerful positive current pulse flows through the circuit: 1-15-12-5-4-1. In subsequent periods of variation of the supply voltage, the considered processes of generating a positive pulse between the electrodes 5, 4 are repeated in each period of the supply voltage of the source.

The generated current pulses transport the ions of the components that strengthen the soil. The amount of these ions is proportional to the amount of electricity in the working pulse. ° The negative component of the asymmetric alternating current, which depolarizes the soil in the interelectrode space, is formed in the circuit: 1-4-5-16-1, when a positive potential is applied to the electrode 4 from phase 1. At

0 In this way, a depolarizing current pulse flows in circuit 1-4-5-16-1, which intensifies the processes in the soil and increases the efficiency of soil treatment. This im. the pulse also forms once per

5 One change in supply voltage.

The process of formation of the second positive impulse for a period occurs under the action of a linear phase voltage; it proceeds with a phase shift of -300

0 electrical degrees relative to the considered processes, when the potential of the connection point of phases 2 and 3 is higher than the potential of the connection point of phases 2 and .1, In this case, a pulse is generated to recharge the capacitor 14 through the circuit: 2-9-14-4-2. Starting from the point in time when the potential of the connection point of phases 1 and 2 becomes higher than the potential of the connection point of phases 2 and 3, charging of the capacitor 18 along the circuit starts: 2-4-14-11-J8-2 to a voltage of 2. Second a positive charge pulse is formed at the moment of opening the thyristor 13, a positive charge pulse is formed under the influence of the phase 3 voltage and the voltage of the capacitor 18 along the circuit: 2-18НЗ-6-4-2. The maximum voltage value of this pulse is 3.

The negative component of the asymmetric alternating current for the second pulse is generated in the circuit: 2-4-6-17-2 under the action of the voltage of the alternating current source. This pulse is also generated once during the period of the supply voltage change.

Thus, the device during the period of variation of the supply voltage generates two positive current pulses, strengthening the soil, and two negative - depolarizing. This allows you to double the rate of transfer of energy of the source to the soil and improve the specific energy performance of the device, as well as adjust the speed of soil consolidation by adjusting the opening moment of thyristors 12 and 13. -

Claims (1)

The claims 5 A device for electrochemical soil stabilization, comprising: a three-phase alternating current source; two injector electrodes with fixing solutions placed in the soil to be reinforced, four diodes and three capacitors, one of the plates of the first capacitor connected to the cathodes of the first and second diodes, one terminal of the first phase of the three-phase power supply connected to the first electrode -injector, characterized in that. that, in order to reduce energy costs, it is equipped with two thyristors; the fourth and fifth capacitors, the third electrode-injector and the signal conditioner, the other side of the first capacitor being connected to the first injection electrode, the second electrode-injector connected to the first output of the signal conditioner, one side of the third capacitor and the cathode of the first thyristor the control electrode of which is connected to the second output of the signal driver, the anode of the first thyristor is connected to one plate of the second capacitor and to the cathode of the third diode, the third electrode-injector is connected to the third output of the signal driver, to the one plate of the fourth capacitor and to the cathode of the second thyristor, the control electrode of which is connected to the fourth output of the signal driver, the anode of the second thyristor is connected to the cathode of the fourth diode and to one of the capacitor plates, the anodes the third and fourth diodes are connected to one plate of the first capacitor, the first electrode-injector is connected to one of the terminals of the second phase, the other terminal of the first phase and one of the terminals of the third phase are combined and connected to the first input of the first signal driver - and to other plates of the second and third capacitors and the anode of the first diode, the other terminals of the second and third phases are combined and connected to the second input of the signal driver to other plates of the fourth and fifth capacitors and to the anode of the second diode.