SU1721444A1 - Ultrasonic device for measuring liquid level - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to expand the field of application of an ultrasonic device for measuring the level of liquids. The ultrasonic device consists of an acoustic duct 1, made in the form of an L-shaped pipe, provided with reflectors 8 at the folds, containing in its upper part an ultrasonic measuring element 5, connected to the measuring and recording unit 6. A float 2 is installed around the pipe rings with ball clamps 4 and a polished bottom surface 3. The lower end of the sound duct is closed by a plate 7 with polished surfaces, and the reflectors 8 are provided with damping plates 9. The sound duct is filled with transparent 10. Fluid 1 yl.

Description

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This invention relates to a measurement technique in the energy, chemical industry, and other areas of the national economy.

The ultrasound level indicator is known, which contains a measuring unit, a level meter tube, a piezoelectric transducer and a movable reflector sensor, a level indicator and level gauges, as well as an ultrasonic level gauge containing transducers and a recording-recording unit.

The disadvantages of these gauges are the limited application for certain conditions, the large losses of the ultrasonic signal in the contaminated fluid.

Closest to the present invention, there is an ultrasonic device for measuring the level of liquid in tanks, containing a duct filled with a working fluid and made in the form of pipe sections connected at right angles.

A disadvantage of the known device is the limited use.

The purpose of the invention is to expand the scope.

This goal is achieved by the fact that the float of the device is made in the form of a ring with ball retainers and a polished bottom surface installed outside the sound conductor, the lower end of the duct is closed with a plate with polished surfaces whose thickness is a multiple of the half-wave length, and the thickness of the reflectors is a multiple of an odd number of a quarter of the wavelength, at the same time, the reflectors outside are provided with damping plates, and the duct is filled with a transparent liquid.

The drawing shows a diagram of the device, a general view.

The ultrasonic liquid level measuring device consists of a sound guide 1, made in the form of an L-shaped pipe, fitted on the folds with reflectors 8, containing in its upper part an ultrasonic measuring element 5, connected to the measuring and recording unit 6, around the pipe has a float 2, made in the form of a ring with ball locks 4 and a polished bottom surface 3, the lower end of the sound duct is closed by a plate 7 with polished surfaces, and the reflectors 8 are equipped with damping plates 9, The sound duct is filled with a clear liquid 10.

The device works as follows.

The sonic line 1 of the ultrasonic device is vertically lowered by the L-shaped part into the measuring fluid and fixed. Then, an ultrasonic signal is transmitted through the ultrasonic sensor 10 through the ultrasonic measuring element 5, resulting in longitudinal ultrasonic waves passing through the liquid, reflected from the polished surfaces of the reflectors 8 and further, the passage through the plate 7, reflected from the polished lower surface 3 of the float 2 The ultrasonic signal in reverse order reaches the ultrasonic measuring element 5, from which it enters the measuring and recording unit 6, where the corresponding measurements are made, which allows determine the position of the fluid level.

The device can be used to determine the level of liquids in reactors, tanks with aggressive liquids, etc.

In comparison with the known, the proposed device is simpler and has wide application limits.

Technical and economic efficiency consists in expanding the functionality, which is provided by a complex application for measurements in various environments with high parameters (temperature, pressure), at various points of objects in space (capacity, pipe, equipment, etc.).

Claims (1)

Invention Formula An ultrasonic device for measuring the level of liquids, containing a fluid-filled duct made in the form of an L-shaped pipe, the folds of which are provided with reflectors installed at an angle of 45 ° relative to the centerline of the pipe, an ultrasonic measuring element, a float, a measuring and recording unit that differs so that, in order to expand the field of application, the float is made in the form of a ring with ball clamps and a polished bottom surface installed outside the sump duct, the lower end of the ode closed plate with polished surfaces, whose thickness is a multiple of half-wave length, and thickness of the reflector is a multiple of an odd number of quarter wavelength, the reflectors are provided with damping pads outside and turbo filled with a transparent liquid.