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Measuring device and measuring method for direct impact pressure in liquid-phase high-voltage pulse discharge

A technology of high-voltage pulse discharge and impact pressure, which is applied in the direction of measuring devices, measuring rapid changes, instruments, etc., to achieve the effect of avoiding the measurement distance

Active Publication Date: 2019-02-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to propose a liquid-phase high-voltage pulse discharge direct impact pressure measurement device and method for the problem that the traditional active pressure measurement device cannot realize the direct impact pressure measurement of the liquid phase high-voltage pulse discharge in the near field. In the near field of the axial direction of the discharge point, the direct impact pressure generated by the discharge is measured, and the pressure impact position is judged according to the discoloration area of ​​the pressure film

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  • Measuring device and measuring method for direct impact pressure in liquid-phase high-voltage pulse discharge
  • Measuring device and measuring method for direct impact pressure in liquid-phase high-voltage pulse discharge

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Embodiment 1

[0030] This embodiment discloses a liquid-phase high-voltage pulse discharge direct impact pressure measuring device, its structure is as follows figure 1 As shown, it includes: a stainless steel support base 2 and a support cylinder 3, the upper part of the support base 2 is a high-voltage discharge electrode 1, the distance between the discharge electrode 1 and the support base 2 is adjustable, and the upper surface of the support base 2 can be placed for pulse discharge Broken material; a total of seven support cylinders 3 are fixed on the lower part of the support seat 2, one at the center, and the other six are circumferentially symmetrically distributed; a pressure film 5 is placed under the support cylinder 3, and high, medium and high are selected according to the actual discharge situation. Low and different pressure-resistant pressure films; the pressure film 5 is placed on a circular stainless steel bottom plate 6; the surface of the bottom plate 6 is connected to a ...

Embodiment 2

[0033] Adopt a kind of liquid-phase high-voltage pulse discharge direct impact pressure measurement device and method described in embodiment 1 to carry out the steps of the impact pressure analysis of pulse discharge broken magnesite under different voltage conditions as follows:

[0034] (1) Connect each part of the device according to Embodiment 1;

[0035] (2) Cylindrical magnesite samples are placed on the surface of support base 2, and the tip of high-voltage discharge electrode 1 is adjusted to 10 mm from the upper surface of magnesite samples;

[0036] (3) Under the voltage conditions of -30kV, -35kV, -40kV and -45kV, the magnesite samples were subjected to high-voltage pulse discharge crushing, and the pressure values ​​of the pressure film under different voltage conditions were obtained by analysis;

[0037] (4) According to the pressure value of the pressure film under different voltage conditions, the impact pressure value acting on the surface of magnesite is obt...

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Abstract

The invention provides a measuring device and a measuring method for the direct impact pressure in a liquid-phase high-voltage pulse discharge, and belongs to the technical field of the measuring of the impact pressure. The measuring device comprises a cylindrical stainless steel support base and a support cylinder. There is a high-voltage discharge electrode in the upper portion of the support base. A material used for crushing by the pulse discharge can be placed on the upper surface of the support base. The support cylinder is fixed to the lower portion of the support base. A pressure filmis placed under the support cylinder, and the pressure film is located on a circular stainless steel bottom plate; a stainless steel limiting circular ring is connected with the surface of the bottomplate, and gaps are formed in the two symmetrical sides of the limiting circular ring. The stainless steel support base is grounded through a wire. The measuring method characterizes the direct impactpressure by a stress reaction generated after the pressure film is subjected to a pressure. The measuring method belongs to a passive measuring method, so that the condition that an active pressure measuring device can be easily damaged by a strong pulse electromagnetic field in a high-voltage pulse discharge process can be avoided; meanwhile, the pressure film can directly perform the measuringat the near field below the discharge position, so that the limitation that the active pressure measuring device requires a long measuring distance can be avoided.

Description

technical field [0001] The invention belongs to the technical field of impact pressure measurement, and relates to a liquid-phase high-voltage pulse discharge direct impact pressure measurement device and method. Background technique [0002] In recent years, liquid-phase high-voltage pulse discharge plasma technology has been favored by researchers from all over the world for its good applicability. Liquid phase (generally water medium) high-voltage pulse discharge is a form of discharge in which high voltage is applied to the liquid phase to cause breakdown of the liquid phase. It can form local high-temperature hot spots, shock waves, ultraviolet light, and active free radicals in the liquid phase. effect. Among the many effects accompanying the discharge process, the mechanical effect has always been a research hotspot, and has been widely used in rock crushing, concrete recycling, waste circuit board treatment, pipeline descaling and other fields. Especially for mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L23/06G01L23/26
Inventor 王志强曹云霄马飞李国锋王宁会
Owner DALIAN UNIV OF TECH