SU651215A1

SU651215A1 - Method of diagnostic check of pressure in hydropneumatic flexible hoses

Info

Publication number: SU651215A1
Application number: SU752308660A
Authority: SU
Inventors: Александр Григорьевич Лень; Василий Петрович Паршинцев; Владимир Егорович Захаров
Original assignee: Институт Горной Механики И Технической Кибернетики Им.М.М.Федорова
Priority date: 1975-12-29
Filing date: 1975-12-29
Publication date: 1979-03-05

Description

Изобретение относитс к области приборостроени , в частности,к диагностике технического состо ни элементов гидросистем без их разборки.The invention relates to the field of instrumentation, in particular, to the diagnosis of the technical condition of hydraulic system components without disassembly.

Известен способ измерени давлени в трубопроводах на основе контрол упругих деформаций их стенок от воздействи внутреннего давлени с noMOuibio тензодатчиков, смонтированных вне трубопровода 1J.A known method for measuring pressure in pipelines is based on monitoring the elastic deformations of their walls from the effects of internal pressure with noMOuibio strain gauges mounted outside the pipeline 1J.

Известный способ неприменим дл контрол давлени в гибких рукавах из-за демпфирующих свойств резиновой армировки.The known method is not applicable to control the pressure in the flexible sleeves due to the damping properties of the rubber reinforcement.

Наиболее близким по технической сущности и достигаемому техническому эффекту вл етс способ диагностического контрол давлени в гибких рукавах гидропневмосистем путем подачи давлени в гибкий рукав и измерен|1 силы, действующей на стенку рукава после подачи давлени 2.The closest in technical essence and the achieved technical effect is the method of diagnostic control of pressure in flexible hoses of hydropneumatic systems by applying pressure to a flexible hose and measuring the force acting on the wall of the sleeve after applying pressure 2.

Известный способ не обеспечивает высокой производительности труда из-за вли ни диаметров гибких рукавов на результаты измерени .The known method does not provide high labor productivity due to the influence of the diameters of the flexible hoses on the measurement results.

Цель изобретени - повышение производительности труда.The purpose of the invention is to increase productivity.

Поставленна цель достигаетс тем, что при диагностическом контроле давлени в гибких рукавах гидропневмосистем путем подачи давлени в гибкий рукав и измерении силы, действующей на стенку рукава после подачи давлени , проходное сечение рукава перед подачей давлени деформируют в диаметральной плоскости на величину, посто нную дл каждого размера гибких рукавов .The goal is achieved by the fact that in the diagnostic control of pressure in flexible hoses of hydropneumatic systems by applying pressure to a flexible hose and measuring the force acting on the wall of the sleeve after applying pressure, the flow area of the sleeve is deformed in the diametrical plane by an amount constant for each size flexible sleeves.

Предлагаемый способ может быть реализован , например,, с помощью устройства, показанного на чертеже.The proposed method can be implemented, for example, using the device shown in the drawing.

Гибкий рукав 1 без давлени зажимают между воздействующим элементом 2 (траверсой ) и воспринимающим элементом 3The flexible sleeve 1 without pressure is clamped between the acting element 2 (crosshead) and the sensing element 3

Claims

(rod), is deformed in the diametral plane by a predetermined amount (the amount of deformation is limited by stops 4) and the origin of the instrument 5 for measuring pressure in a closed cavity 6 (for example, in a hydraulic cylinder) is established. Then a controlled pressure is applied to the sleeve, acting through the perceiving element on the closed cavity; the pressure increase in the closed cavity is recorded by an instrument, for example a pressure gauge, suitably calibrated. It is rational to calibrate the device in relation to several sizes of sleeves with the application of appropriate scales. In order to take into account the change in the properties of the gmbaki sleeves in the process of operation, and to take into account the deviations of the outer and inner diameters of the sleeves during their manufacture, the operation of deformation of the sleeve without pressure, and determining the origin of the instrument, it is advisable to carry out each measurement. Claims The method of diagnostic control of pressure in flexible hoses of hydropneumatic systems by applying pressure to a flexible sleeve and measuring the force acting on the wall of the sleeve after applying pressure, characterized in that, in order to increase labor productivity, the flow area of the sleeve is deformed in the diametral plane before applying pressure a constant value for each size of flexible hoses. Sources of information taken into account in the examination 1. UK Patent N ° 1323667, cl. G 01 L 9/04, 1966.

2. USSR author's certificate number 300627, cl. E 21 D 23/00, 1974.