SU1480984A1 - Apparatus for cutting with high-pressure liquid jet - Google Patents

Abstract

The invention relates to the processing of materials and can be used for cutting, drilling and cleaning both metallic and non-metallic materials. The purpose of the invention is to expand the technological capabilities of the device and increase safety. A coaxial system of N electrodes, which are connected to alternating N-outputs of the pulsed source, is introduced into the device containing a pulsed power source, a unit for setting the pressure of a fluid with a nozzle and a magnetic system. With the passage of the jet, the fluid between the N electrodes is transferred to the plasma state. 2 Il.

Description

The invention relates to the processing of materials and can be used for cutting, drilling and cleaning both metallic and non-metallic materials.

The purpose of the invention is to expand the technological capabilities of the device and increase safety.

FIG. 1 shows a block diagram of the device; in fig. 2 is a section A-A in FIG. 1 (coaxial system of electrodes).

A device for cutting a high-pressure jet of liquid contains a device for setting a pressure of a fluid with a nozzle 2, a magnetic system 3, a system 4 of / V electrodes, a pulsed source 5 having outputs 11 $ i - L / 5, while the magnetic system 3 is placed on the nozzle 2, and the system 4 of L-electrodes is located concentric with the axis of the nozzle 2, the electrodes of the system 4 in the corresponding sequence are connected to alternating / V-outputs of the pulsed source 5.

The device 1 sets the pressure of the fluid and ensures the flow of fluid from the nozzle 2 at a speed of m / s, a jet diameter of 5-1 mm Pulse source 5 provides alternating pulses by specifying the duration and amplitude of Um with a frequency of 0.1-100 kHz, where the pulse energy

SP

1 -1 J.

When a pulsed source 5 is turned on, alternating pulses are applied to the corresponding pair of electrodes of system 4, for example, 4.1-4.5, 4.2-4.6, 4.3-4.7, etc. (Fig. 2), and a discharge breakdown occurs between the corresponding pair of electrodes of system 4 the diameter of the jet 6 of the liquid. Wherein

impulses with circular frequency reN

placed between the respective pairs of electrodes. The total power released in the volume of the jet diameter between.-V-electrodes at kHz

Гс & ц Е -Р 0-100 kW.

At this power, the liquid stream is transferred to the plasma state with the formation of a hydrogen-oxygen mixture, the temperature of which is 1000-3000 ° C, with a speed Vc is driven into the product 7, cutting (drilling).

The temperature of the plasma state of the liquid jet can be increased by using aluminum, iron, boron, or a mixture of

Sfi

(L

3

oo oo oo

four

fine powders. Using aluminum as W-electrodes, the application of alternating pulses results in the decomposition of water into hydrogen and oxygen, as well as uniform sputtering of the material / V-electrodes under the action of electric pulses, which is combined with oxygen with additional heat generation.

4L / + 302 2L / 2Oz + 798 kcal. Similarly, for boron 4B + 302 2B203 + 672 kcal.

You devices need to move them at a speed Vn equal to the rate of spraying.

Claims (1)

Invention Formula A device for cutting a high-pressure jet of liquid, containing a device for setting the pressure of a liquid, connected to a nozzle, a pulsed power source, a magnetic system, characterized in that, with the aim of expanding technological capabilities and enhancing safety, a coaxial system of W-electrodes is introduced into it located concentric to the axis nozzle and connected with the corresponding Since the electrodes of the system 4 with time-alternating L / -pulses of the pulsed it are sprayed, for a normal working source of power.  / I.