SU983369A1

SU983369A1 - Throttling device

Info

Publication number: SU983369A1
Application number: SU802959472A
Authority: SU
Inventors: Валерий Викторович Гаврилов; Владимир Васильевич Парфенов
Original assignee: Предприятие П/Я В-8103
Priority date: 1980-07-18
Filing date: 1980-07-18
Publication date: 1982-12-23

Description

(5А) ДРОССЕЛЬНОЕ УСТРОЙСТВО(5A) THROTTLE DEVICE

Изобретение относитс к трубопроводной арматуре и может найти применение в системах регулировани расхода рабочей среды в широком диапазоне перепадов давлений.The invention relates to pipe fittings and can be used in control systems for the flow rate of the working medium in a wide range of pressure differences.

Известно дроссельное устройство, содержащее корпус, охватываемый снаружи кольцевым ультразвуком вибратором , в котором установлен пакет капилл рных трубок, закрепленных двум сетками С 1.A throttle device is known, comprising a housing that is covered outside by an annular ultrasound vibrator, in which a package of capillary tubes is mounted, fixed by two grids C 1.

Недостатком известного дроссельного устройства вл етс невысока надежность вследствие усталостного разрушени симметричными переменнь(ми нагрузками, вызванными кольцевым вибратором.A disadvantage of the known throttle device is low reliability due to fatigue failure by symmetrical variables (mi loads caused by a ring vibrator.

Известно также дроссельное устройство , содержащее дросселирующий элемент в виде капилл рных каналов, выполненных в продольном направлении и пьезокерамический или магнитострикционный генератор ультразвуковых колебаний С 2.It is also known throttle device containing a throttling element in the form of capillary channels made in the longitudinal direction and a piezoceramic or magnetostrictive generator of ultrasonic vibrations C 2.

Недостатком известного дроссельного устройства вл етс невысока надежность вследствие разрушающего воздействи ультразвуковых механических колебаний на уплотнени дросселирующего элемента.A disadvantage of the known throttle device is the low reliability due to the destructive effect of ultrasonic mechanical vibrations on the seals of the throttling element.

Целью изобретени вл етс повышение надежности работы.The aim of the invention is to increase the reliability of operation.

Поставленна цель достигаетс тем, что генератор ультразвуковых колебаний и дросселирующий элемент выполнены заодно целое в виде пластин с капилл рными каналами, закрепленных в полости корпуса.This goal is achieved by the fact that the generator of ultrasonic vibrations and the throttling element are made at the same time as a whole in the form of plates with capillary channels fixed in the cavity of the housing.

На фиг. 1 приведено дроссельное устройство с магнитострикционным генератором , общий вид; на фиг. 2 то же, с пьезокерамическим генератором , общий вид.FIG. 1 shows a throttle device with a magnetostrictive generator, a general view; in fig. 2 the same, with a piezoceramic generator, a general view.

Claims

The throttle device includes a housing 1 in which a throttling element 2 with capillary channels 3 is made in the longitudinal direction and an ultrasonic oscillator, which is integral with the throttling element 2 in the form of plates with capillary channels. Piezoceramic (Fig. 1) magnetostrictive (fig.2) plates are connected to housing 1 by means of ring k. When using a magnetostrictive generator, a winding 5 is installed on the outer surface of the housing (Fig. 1). The throttle device operates as follows. The working medium is supplied to the internal cavity of the housing 1. In the initial state, the working medium is throttled by magnetostrictive (, Fig. 1 or piezoceramic (Fig. 2) elements 2 in the capillary channels 3B of the working state in the case of a magnetostrictive generator (Fig.) To winding 5 or on plates in the case of a piezoceramic generator, alternating voltage is given, varying from 22 kHz to 400 kHz. Under the action of an induced magnetic field in winding 5 in a magnetostrictive ajleMeHTe 2, the plates change their linear dimensions in sowing with the frequency of the alternating voltage applied to the winding 5, this causes ultrasonic mechanical oscillations of the liquid working medium in the internal cavity of the housing 1. As a result, the viscosity of the working medium decreases, which leads to a decrease in the hydraulic resistance in the capillary channels 3 and a corresponding increase in flow rate without an increase in pressure. When using a dr-device of a piezo-ceramic generator (Fig. 2) the alternating voltage is supplied directly to the plates, the linear dimensions of which will also vary in the axial direction, with the result that the process of choking the working medium is similar to that described above. In a throttle device with a magnetostrictive generator, case 1 is made of a magnetically transparent material, for example bronze, titanium. The control of the flow rate of the working medium is carried out by selecting the diameters of the capillary channels and changing the parameters of the ultrasonic vibrations, for example, the frequency. Performing an ultrasonic oscillator and a throttling element at the same time is a whole in the form of plates with capillary channels fixed in the housing cavity, which reduces the damaging effect of ultrasonic mechanical vibrations on the sealing of the throttling element Kopnyca, which increases the reliability of the device as a whole. The invention The throttle device, comprising a housing, a throttling element c. the form of capillary channels made in the longitudinal direction, and a piezo-ceramic or magnetostrictive generator of ultrasonic vibrations, characterized in that, in order to increase reliability, the generator of ultrasonic vibrations and the throttling element are made integrally in the form of plates with capillary channels fixed in the housing cavity. Sources of information taken into account in the examination 1. USSR author's certificate number i 69853, cl. F 16 C it7 / 08, 1977.

2. USSR author's certificate №, cl. F 16 K i 7 / 1i, 1976.

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FIG. one