SU1493318A1 - Device for cleaning dielectric fluids - Google Patents

Abstract

A device for cleaning dielectric liquids from mechanical particles of contaminants and emulsion water in an electric field. The purpose of the invention is to increase reliability, increase service life, reduce energy consumption. Mesh electrodes are made in the form of a flat core (PS), limited in height by connecting pins and installed between flat insulated electrodes (EIA) parallel to them. Inclined shelves (NP) are rigidly attached to the PS, which are supported on EIA by free edges covered with insulating material, for example, fluoroplastic, and the cleaning package formed by EIA, between which mesh electrodes are installed and the dielectric filler is placed autonomously and mounted on a dielectric plate resting on the hull. Moreover, the angle of inclination of the NP and the distances between them are chosen from the ratio B SINΘ≤A≤H / 2 COSΘ, where Θ is the angle of inclination of the NP to PS

B is the distance between the free edges of the OP

A - distance between NP

H is the distance between PIE. In addition, to expand the operational capabilities of the dielectric filler is made of granules of capacitor ceramics. 1 hp ff, 4 ill.

Description

The invention relates to the field of purification of dielectric fluids from mechanical particles of contaminants and emulsion water, and can be used to clean the working fluids of hydraulic systems, lubricating oils and heat in all sectors of the national economy.

The aim of the invention is to increase reliability, increase the service life of the device and reduce energy consumption for cleaning fluid.

FIG. I shows a device for cleaning dielectric liquids in an electric field, a slit; in fig. 2 - mesh electrode; in fig. 3, 4 -, mesh electrodes.

A device for cleaning dielectric liquids in an electric field includes a housing 1, fittings 2 and 3 for entering the cleaned and leaving the purified liquid, valve 4

to drain the liquid during regeneration of the device. The body 1 contains flat insulated electrodes 5, between which mesh electrodes 6 are installed, made in the form of a flat core 7 installed parallel to the flat electrodes 5, inclined shelves 8 rigidly attached to the core 7, resting on flat electrodes 5 with free edges covered with insulating material 9, for example, fluoroplastic (fluoroplastic flexible tube), and a dielectric filler 10 of capacitor ceramic granules. The flat core 7 is limited in height by the upper and lower connecting pins II connecting the flat electrodes 5 between them. The flat 5, mesh 6 electrodes and the dielectric filler 10 form a cleaning package 12 mounted on the dielectric

four:

QD 00 GS

00

a plate 13 resting on the housing 1. through the angles 14 on which the lower connecting rods 11 are supported. The distance between the flat electrodes 5 is established with the aid of bushings 15. The tires 16 and 17 for supplying high voltage from the high voltage power source 18 are mounted on the di: Electrical bushes 19 and electrically connected by conductors 20 with flat and mesh electrodes.

The device works in the following way.

The stream contaminated by mechanical impurities and emulsion water of the dielectric fluid is fed into the device through the inlet fitting 2 and fills the space between the flat 5 and the mesh 6 Oe. 1k- trody. Thereafter, a high voltage is applied to these electrodes from the high voltage source 18 and pumping of fluid through the device begins. Under the action of an inhomogeneous electrically polar layer, the contaminant particles and emulsion water are deposited on the surface of the polarized filler K) and on the insulation of the flat electrodes 5 mainly at the points of contact of the free edges of the inclined shelves 8 with the flat electrodes 5, g The electric field and its gradient have maximum values. Insulating material 9, for example, fluoride, 1ast (fluoride, post-flexible flexible tubes), which have electrical strength, is stronger than insulating butting flat electrodes 5, with which free edges of inclined shelves 8 are covered, virtually eliminates this: electrical breakdown between electrodes during operation of the device, and the local location of the material 9 only along the free edges of the shelves 8 does not reduce the floor tension and does not distort the whole picture of its distribution in the interelectrode space of the cleaning package 12) of the package 12. In the same place The electrical breakdown between the insulation electrodes of the cleaning package 12 and the bus bars and 17 from the housing 1 by placing the package 12 on the dielectric plate 13 and laying HJHH 16 and 17 on the dielectric bushings 19 protects the housing I from the voltage of the sample, and the current through the circuit The high voltage power supply 18, usually, is usually protected by a surge current. The execution of the cleaning package 12 offline, i.e. Regardless of the housing 1, with the help of connecting cables II and installation sleeves 15, the installation and disassembly time of the package in the device, as well as its assembly and disassembly for replacing the dielectric substrate 10 or the high electrode electrodes 5 in the case of their destruction from the first floor is significantly reduced. The sleeves 15 are installed between the flat electrodes.

0

, 0 about 5 5

five

0

5, required to create a field strength in the interelectrode space sufficient to effectively remove mechanical fimes and emulsion water from the fluid being cleaned. To improve the technology of assembling the cleaning package 12, the elliptical cores 7 of the grid electrodes 6 are limited in height by the upper and lower connecting pins 11 so that the grid electrodes 6 are arranged when assembling the package 12 in the space between the 1 pins 11 and the flat electrodes 5. The sleeves 15 are made of dielectric material . The grid electrodes 6 can be performed both by inclined shelves 8 up (Fig. 3) and down (Fig. 4). The implementation of the grid electrodes 6 in the form of flat cores 7 from a metal grid and the arrangement of the latter parallel to flat electrodes 5 makes it possible to increase the field strength in the interelectrode space without increasing the hydraulic resistance of the device, which contributes to increasing its efficiency and reducing energy consumption for cleaning liquids. The choice of the angle of inclination of the shelves 8 and the distance between them from the ratio

H

B.s / ne a -2-rosH,

where O is the angle of inclination of the shelves 8 to the flat core 7;

The distance between the free edges of the shelves 8;

a is the distance between the shelves 8;

H is the distance between flat insulated electrodes 5, it allows to increase the number of highly heterogeneous zones by up to 2 times, by 1p) of the electric field and recharge of soil particles per unit length of the device and increase the minimum voltage in the interelectrode space by 2 times in comparison with the prototype, which leads to a reduction in energy consumption for highly efficient cleaning of the liquid while maintaining its consumption characteristics, and the high voltage applied to the electrodes at this meter is 6–7 kV. The same advantages HiecTBa can be used to reduce the device dimensions by a factor of 1.5-2 in comparison with the prototype. Regeneration of the device during accumulation of contaminants in it and decrease in efficiency is carried out without disassembling it through valve 4 by supplying a reverse flow of pure liquid through fitting 3 with the electric field disconnected and closed coupling 2.

The proposed device, in comparison with the known one, will allow to increase reliability, to increase by 3-4 times the service life, to reduce by 1.2-1.4 times the energy consumption for cleaning liquids without reducing the efficiency of the device and to expand its ex- ternal capabilities.

Claims (2)

1. A device for cleaning dielectric fluids in an electric field, including a housing with liquid inlet and outlet fittings and a liquid drain valve during regeneration, flat insulated electrodes, between which mesh electrodes are installed and a dielectric filler placed, forming a cleaning package, characterized in that the purpose of increasing reliability, increasing service life and reducing energy consumption, the mesh electrodes are made in the form of a flat core, limited in height by connecting pins and mouths novlen-, Rowan electrodes 5 :;: but Г ™ ™ ЖЖТжТс; ГпрГр: п: 2. The device according to claim., O.and.a shchees i ™ Zr; -H n-ato; nG ami ::: from the following relationship: , rde 9 the angle of the shelves to a flat core; B is the distance between the free edges of the shelves; a is the distance between the shelves; I is the distance between flat insulated insulating material, and the cleaning bag is autonomous and installed on a dielectric plate resting on the housing, with the angle of inclination of the shelves and the distance between them chosen electrodes from the following relationship: , rde 9 the angle of the shelves to a flat core; B is the distance between the free edges of the shelves; a is the distance between the shelves; I - distance between flat isolates Srig.1 l //