SU450959A1 - Flow meter - Google Patents

Description

The invention relates to instrument engineering and can be used to control the fuel consumption of aircraft.

Verification of the health of known flow meters is usually performed with the help of specialized test equipment.

In the event of a failure in the operation of the flow meter, an additional error occurs in measuring the amount of fuel mark. Failure of the elements of the flow meter can not be replaced immediately, which can lead to an emergency.

The purpose of the invention is to provide automatic control of the flow meter.

This is achieved by the fact that, in the flowmeter, a lamellar device is inserted, the slider of which is mechanically connected with the pointer, and electrically with the power source, the relay and the series connected counters.

| Chick And the failure indicator, and about. The water sections of the lamella device are connected to the relay coil, in the following way. the contacts of which the reset input of the counter is connected to the power source, and through n. the counting counter input is connected to the output of an inductive-pulse device.

The drawing shows a flow diagram of a flow meter.

The flow meter contains a sensor I. an inductive impulse device 2 amplifier 3, an actuating element 4, a pointer 5, a lamella device 6, a relay 7, a counter 8 and a fault indicator 9.

The inductively generated pulse device 2 generated by the sensor I, through the adapter 5, arrives at the actuating element 4, moving with the arrival of each pulse. The j4 actuator is mechanically connected to the pointer. ::;, 5, The number of pulses received on the HcnOviHiiTenbHHii element 4 and corresponding to the amount of fuel passed through the sensor I is reflected in the movement of the pointer arrow 5, synchronously with the arrow of the utsazatel 5 moves the two-channel lamella device b, mechanically connected to the pointer 5. When the slider of the lamella device 6 arrives at the conductive section, the relay 7 is turned on, which is BC. contact opens the circuit zeroing counter 8, and, p. contact closes the pulse feed circuit from the inductive impulse

the device 2 to the input of the counter B, the counter 8 starts the counting of the pulses arriving at its input, the slider of the lamella device 6 passes through the conductive section during the time t determined from the ratio

t 4-, where N is the capacitance of the count B; f is the frequency of the signals of the sensor I,

If the flow meter main circuit fails, meter B overflows

and gives the indicator a flow meter failure signal.

 IMAGE1 ME: A flow meter containing a power source and a sensor connected in series, an inductive-pulse device, an amplifier, an actuator, and a pointer, characterized in that, in order to automatically control the flow meter, a lamella device is inserted into it, the slider of which is mechanically connected to the pointer, and electrically - with a power source, a relay and a series-connected counter and a failure indicator, with the conductive portions of the launcher device being connected to the relay coil via n, -z. the contacts of which the reset input of the counter is connected to a power source, and through N.-p, the contacts of the counter input are connected to the output of an inductive-pulse device.

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