SU1153236A1 - Ball-type transducer of liquid flow - Google Patents

Abstract

BALL FLUID FLOW SENSOR, containing a photoelectric signal pickup unit mounted on the housing with inlet and outlet connections, has a toroidal channel inside the housing with a ball located in it, in order to increase the accuracy of the measurement by reducing the effect of foreign inclusions made solid from a material optically transparent in the frequency range of the emitter, and the emitter and detector of the signal pickup unit are monochromatic. (He ate with you

Description

The invention relates to a measuring technique and may be used in motor vehicles and other sectors of the national economy.

A flow sensor is known, comprising a housing with inlet and outlet nozzles. Inside the housing there is a measuring chamber in which a sensing element of the turbine and a photoelectric signal pickup unit with an optical detection device D3 are installed.

However, the fluid flow sensor has a low accuracy of fuel consumption measurement due to the receipt of false information when air bubbles or a portion of check checks appear in the fuel.

Closest to the present invention, there is a fluid flow meter ball sensor containing a photoelectric signal removal unit mounted on a housing with inlet and outlet nozzles, inside which a toroidal channel with a ball 2 located in it is made,

This ball flow sensor also has a low measurement accuracy in the presence of air bubbles or particles in the fuel due to the appearance of a signal at the output of the detecting device.

interference. )

The aim of the invention is to increase the reliability of flow measurement by reducing the effect of foreign inclusions.

This goal is achieved by the fact that in a ball fluid flow sensor containing a photoelectric signal pickup unit mounted on a housing, inside which there is a toroidal channel with a ball located in it, the ball is filled with a flat material of the radiator optically transparent in the frequency range, and the radiator and detector node pickup signal - monochromatic.,

Figure 1 presents the ball sensor fluid flow, abundance view; figure 2 - the shape of the output signal of the detecting device

The sensor consists of a detachable housing 1 and 2 with a toroidal channel 3 and inlet 4 and outlet 5 located along a tangent to its axis, 5 branch pipes V to the inlet and outlet

nozzles 4 and 5 are screwed into fittings 6 and 7 for connecting inlet and outlet hoses. Inlet channel 4 has a nozzle 8 to increase the speed of fluid flowing into the channel 3 of the fluid. A monochromatic radiator 9 is built into housing 1, the radiation of which through a window IO penetrates into the toroidal channel Zo. Monochromatic radiation receiver 1I is built into housing 2, the receiving element of which through radiation window 12 receives radiation from the radiator 9 a photoelectric signal removal unit, the output of which is connected to the secondary device. In the toroidal channel 3 there is a sensing element - a solid ball, the diameter of which is smaller than the diameter of the cross section of the toroidal channel 3, which allows the ball to move freely in the fluid flow. The wavelength of the radiation emitter .9 is 0.96 microns. For this radiation, ball 13 is full, for example, of polyamide 68 and is

collecting lens I

Ball flow sensor works as follows

The flow of fluid entering through the nozzle 6 into the inlet channel 4 flows through the nozzle 8 and enters the toroidal channel 3. In the canape 3, a vortex motion of the fluid is formed, along with which the ball 13 moves. When the flow of liquid passes through the detecting device, the radiation from the radiator 9 through windows O and 12 enters the radiation receiver 11 In this case, there is no signal at the output of the detecting device. When the rays fall on the surface of the ball 13, the radiation from the radiator 9 is focused by the ball J3, made of transparent material, as a result of which the rays are deflected and do not fall on the receiving element 11. A pulse signal appears at the output of the detecting device (Fig. 2, point b ). When the ball 13 is located exactly on the optical axis of the detecting device, the radiation flux is focused on the receiving element II and the signal at the output of the detecting device is again absent (Fig. 2, point c). In the next-: J

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The moment when the lens 13 has passed the optical axis of the detecting device, the radiation is re-focused and deflected by the ball 13 from the receiving element I1 o. A pulse signal appears at the output of the detecting device (Fig. 2, point d). The output signal of the detecting device is a sequence of two pulses b and d (Fig. 2), the delay of the spike r relative to the pulse b and the period T of the repetition of two pulses depend on the ratio of the diameter of the ball 13, the length of the toroidal channel 3 and are constant for a specific and also depend on the speed of movement of the ball 13 through channel 3, which is proportional to the flow rate of the fluid. If there are air bubbles in the liquid, a disturbance signal appears at the output of the detecting device.

having the form of a single pulse (figure 2, point e), since the air bubble, with a liquid, forms a diffusing lens. When passing through the detection part of the detector through the detection unit, the radiation from the emitter 9 is cut off, and at the output of the detection device, an interference signal appears, similar to the signal from the air bubble. The pattern of the occurrence of two pulses of a useful signal and its difference from the signal of interference allows an increase in the accuracy of measuring the flow rate of a fluid.

The use of a ball fluid flow sensor in a vehicle fuel consumption measurement system allows an increase in the accuracy of fuel consumption measurement, which in turn provides for a more economical consumption.

Claims (1)

BULK FLOW SENSOR Si soo soo 1 1153236