SU377623A1 - DEVICE FOR REGISTRATION OF REMOTE DISCRETE DISPLACEMENTS - Google Patents

Description

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The invention relates to the field of remote control of measuring equipment for gas-dynamic testing of turbine array models in a flat gas flow and can be used to automate the process of calculating the choice of optimal variants of steam and gas turbine stages.

Devices are known for registering remote discrete movements, including mechanisms for linear and angular movements of an aerodynamic probe with reversible electric motors, photosensors with disks, and recording blocks with counters and logic circuits. The disadvantage of such devices is the low accuracy of testing due to the lack of the possibility of digital recording of results.

In order to improve the accuracy in the proposed device, the linear and angular movement mechanisms of the aerodynamic probe are kinematically connected to photo sensor disks, the outputs of which are connected to the inputs of the counters of recording units connected via logic circuits to reversible electric motors of linear and angular movements.

The drawing shows a block diagram of the proposed device for recording remote discrete movements.

The device consists of an aerodynamic zone), an angular displacement mechanism 2, reversible electric motors 5 and 4, a linear displacement mechanism 4 consisting of

from the gearbox 5, the lead screw 6 and the movable carriage 7; photo sensors 5 and P with disks 10, 11 and light bulbs 12, 13; recording units 14 and 15 with counters 16, / 7, logic circuits 18, 19, printing units 20, 21, a driver 22 and a control circuit 23. Aerodynamic probe / has a pneumatic connection with a U-shaped manometric tube 24 and a kinematic connection with a reversible electric motor 3 installed

on the movable carriage 7, which is connected via a spindle 6 and a gearbox 5 to a reversible motor 4. A gear 11 is connected to a disk 11 with radial slots, in front of which a photosensor 9 is installed, illuminated by a light bulb 13. The counter 16 counts pulses from the photosensor 9 when moving the movable carriage 7.

The driver 22 selects the operating point along a linear coordinate. Each bit of counter 16 is associated with a logic circuit 18, which compares the current meter readings with a program value. If the result of the test coincides with the specified value, logic circuit 18 generates

the impulse to stop the reversing motor 4. The control circuit 23 includes a synchronous reversal of the motor 4 and the counter 16. The outputs of the counter 16 are connected to a printing unit 20 fixing the current value of the linear displacement of the movable carriage 7 with the aerodynamic probe / and enabling discrete registration for subsequent mechanized processing experimental results.

The movable carriage 7 is rigidly connected to the gearbox 5, the aerodynamic probe / and the photodisk 11 of the photosensor 9. In the zero state, the working fluid in both bends of the measuring U-shaped tube 24 occupies the same levels. When changing the direction of the gas flow at the inlet or outlet of the turbine grid model under investigation with respect to the geometric axis of the aerodynamic probe /, changes in one direction or the other and the fluid levels in the knees of the measuring U-shaped tube. At this moment, the logic circuit 19 turns on the reversing electric motor 3 and prepares the counter 17 for operation. The pulses from the photo sensor 8 are recalculated by the counter 17, the output of which is connected to the printing unit 21, which performs the same functions as the unit 20. The printing unit 21 controls scheme 19 with coiB fall of the gas flow velocity vector and the geometric axis of the probe.

A device for recording remote discrete movements can use the application in cases where an accurate installation of measuring equipment is necessary at a distance with digital recording of the coordinates of the installation. At the same time, the processing of the received information is significantly accelerated, since registration on a punched card or punched tape makes it possible to connect electronic computational techniques to the computational process.

Subject invention

A device for recording remote discrete movements, containing mechanisms for linear and angular movements of an aerodynamic probe with reversing electric motors, photo sensors with discs

and recording units with counters and logic circuits, characterized in that, in order to increase accuracy, in it the mechanisms of linear and angular movements of the aerodynamic probe are kinematically connected to

disks of photo sensors, the outputs of which are connected to the inputs of counters of registering blocks connected through logic circuits with reversible electric motors of the mechanisms of linear and angular displacement.

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