SU777394A1 - Apparatus for cleaning inner surfaces of hydraulic pipelines - Google Patents

Description

S of housing 2 when moving the device to the pipeline 1. The electric discharge system is connected to the impeller 4 via a high-voltage electromechanical converter consisting of an electric distributor 8, a device for the pulse power supply, made for example in the form of a high-voltage generator the spark bits 9 and the pulse-forming device 10, connected to the electric generator 11, and the mechanical converter of turns 12. The high-voltage electromechanical converter is intended for converting vanilla impeller speed15 4 into high-voltage pulsed discharges of electric current between electrodes Systems of electrical discharges. The mechanical converter of revolutions 12 is designed to match the revolutions of the wings 20 of the valve 4 with the revolutions of the electric generator I and can be performed, for example, in the form of a reducer, a planetary mechanism, a speed cooker, etc. The case 2 is divided into sealed 25 compartments 13, 14 and 15. In the nose compartment 15 an electric generator 11 is placed, the shaft 16 of which is kinematically connected through a mechanical converter of turns 12 to the shaft 17 of the impeller 4. An electric distributor 8, a high-voltage generator and discharge bits 9 and a pulse shaping device 10. In compartment 13 a transported load is placed.35 Generator 9 consists of two spark gaps 18 and 19 with adjustable forming gaps, a discharge capacitor 20 and a high-voltage transformer 21, and a spark discharge 40 18 is electrically electrically It is connected with electrodes 5, and the spark discharge 19 is connected with electrodes 6. The gerator 9 is enclosed in a casing from which the air is evacuated. The regulation of the forming gaps of spark gaps 45 and 18 and 19 is carried out by means of electric drives (not shown), which are electrically connected with the pulse-forming device 10. The pulse-forming device 1050 consists of a control station 22, a transformer 23, controlled by valves, such as thyristors 24, 25 and 26 and thyristors 27, 28 and 29, connected in anti-parallel, and smoothing thrusters 30.55 The control electrodes of the thyristors 24-29 are connected to station 22. Thyristors 24-26 and 27-29 are using station 22 can work in you Direct or Inverter Modes. Controls of 60 stations 22 are brought to the surface of Corpus 2, which are waterproofed from the surrounding area. The control output of the pulse-shaping device 10 is connected to a controllable input — the coil of the DC motor 31 of the electrical distributor 8, whose shaft is mechanically connected through an insulator (not shown) to the output shaft of the motor 31. The device operates as follows in a way. In the initial state, the group of valves 24-26 is prepared for operation in the rectifying mode, the group of valves 27-29 is in the inverter mode, and the controls of the station 22 are in the off state. Using an automatic pusher installed in the bypass section, for example, a steel pipe, prepared to remove rust and build-up. The device is introduced into the pipeline 1. In this case, the controls of the station 22 are transferred to the On position by any known method, under the action of a steady flow of fluid in the pipeline, for example water. impeller 4 begins to rotate, this creates a ha ha due to the mass of water thrown from the impeller blades, and the device comes to a two-fold, for example, against the flow of fluid in the pipeline. When the impeller 4 rotates, the electric generator I generates electric power, which is supplied to station 22 and to transformers 21 and 23. Station 22 generates control current pulses that unlock valves 24, 25 and 26 and block valves 27, 28 and 29. At the same time, the flow of electricity arrives at the high-voltage spark discharge generator 9, which produces high-voltage current pulses, and to the alternating current electric motor 31 of the electric distributor 8. The electric distributor 8 carries out the distribution of high-voltage current pulses to Electrodes 5 and 6 electrical discharges. In the main spark gaps, formed by electrodes 5 and 6, spark discharges arise. Spark discharges first appear on the cylindrical part of the streamlined surface of the housing 2, and then move along an extended spiral to its vertex. The spark discharges distributed by the electric distributor 8 sequentially run around the whole range of spark gaps, and the encircling of the spark gaps occurs cyclically. Sparks initiate electrohydraulic shocks in a fluid, forming an increased pressure wave propagating in the fluid at an ultrasonic speed. In addition, the spark discharge in a liquid is accompanied by the generation of heat and the appearance of a hydrodynamic ultrasonic field, which

additionally neutralizes liquid in the pipeline.

Since high pressure pulses are directed radially (perpendicularly) to the direction of discharge, there is an intense movement of fluid masses in the form of powerful jets to the inner surface of the pipeline 1. Liquid jets ejected from the cylindrical part of the streamlined surface of the device body 2 cause clipping and flaking rust or build-up from the inner surface of the pipeline, and liquid jets ejected from the cone-shaped part of the streamlined surface of the housing 2 transport the cleaning products through the pipe to the wire

The quality of cleaning the internal surface of the pipeline depends on the intensity of electro-hydraulic shocks in the liquid. The higher the intensity of electro-hydraulic shocks in a fluid, the higher the quality of pipeline cleaning.

In addition, the force of the reaction ejected by electro-hydraulic strikes of water from the cone-shaped part of the streamlined surface of the housing 2 is perceived as a stop and the device acquires additional speed for directional movement along the pipeline being cleaned.

Due to the presence in the device of a high-voltage electromechanical converter connected to the impeller, and to the execution of the cleaner in the form of a system of electrical discharges located on

the outer surface of the rear part of the hull and associated with the converter increases the efficiency of cleaning hydraulic pipelines of large extent, the efficiency of pumping installations that excite the flow of liquid, reduces energy costs and expands the range of use of the device.

The device can be widely used in pipelines of water supply and sewage systems both for cleaning inside the surface of pipelines and for. liquid neutralization in them.

Claims (1)

Invention Formula A device for cleaning the inner surface of hydraulic piping, comprising a streamlined housing on support wheels, an impeller located on the forward part of the housing, and a cleaner, characterized in that, in order to increase the cleaning efficiency of long-distance pipelines, it has a high-voltage electromechanical converter associated with impeller, and the cleaner is made in the form of a system of electrical discharges located on the outer surface of the rear part of the hull and associated with the converter. Sources of information taken into account in the examination 1. "The inventor and innovator number 10, 1977, p. 10-11, 77 (prototype). JJ3 1 hr r r r v- rT; vibrrWx75 7 / J6J / 2/7 2 4 -h h h h 4: 4-d-rv-krs:;: y fTsW: L j h h h / h h L: