SU222042A1 - EDUCATIONAL INSTALLATION FOR MEASUREMENT OF HYDRODYNAMIC PARAMETERS - Google Patents

Description

Training Installation Refers to educational hydraulic laboratory installations and is intended for use in educational institutions for studying the course of hydraulics and HacoiCOB.

A well-known training installation for measuring hydrodynamic parameters, comprising a pump, liquid containers installed at the pump inlet and outlet, a set of hydraulic resistances, measuring and recording instruments, a pressure gauge with an oscilloscope, a throttle valve and a compressed air bottle.

In order to accomplish educational laboratories for the course of hydraulics and pumps, it is necessary to use several installations that are mechanically, electrically, and pneumatically unconnected to each other. Such installations do not provide automatic control of working operations and simultaneous measurement of parameters of the studied elements and aggregates.

In order to improve the quality of mastering the studied subject and by simultaneously measuring parameters and analyzing their relationship, the installation for measuring hydrodynamic parameters is equipped with a control panel, a time relay, a clock mechanism, an electric valve and non-valve. The tank for the fluid at the outlet of the pump is installed on electro-electric sensors that are electrically connected via a control panel to the register | Ivoryori weight of the flow of the time relay, clockwork and electropneumatic valves, which are connected to a cylinder of compressed air and non-liquid cotton. The liquid containers for the inlet and outlet of the pump are interconnected through a pump, a set of hydraulic resistances, a throttle valve and pneumatic valves.

The schematic drawing shows the proposed installation.

It contains pump 1, 2 n 3 containers for liquid, installed at the pump inlet and outlet, a set of hydraulic removable resistances 4 (steel hose, hose, filter, coil, valve, etc.) pressure gauge pressure sensor 5 with oscilloscope 6 and pressure gauges 7, 8 , 9 and W. Capacities 2 and J are connected by a meleda with a pump 1, a set of hydraulic resistances 4, a throttle valve P, a balloon with compressed air and pneumatic valves J2 and

13. Installation is equipped with a remote control

14, clockwork 15, time relay 16, electropneumatic valves 17 and 18.

Capacity 2 for the fluid at the outlet of the pump is installed on electrical strain gauges 19 and 20, electrically connected via the control panel 14 to a weighing device 21, a time relay

claps 17 and 18, which are connected to a compressed air cylinder and leneval valves 12 and 13. The electrical signals from electrotometric sensors are received by adder 22.

The fluid is pumped by pump I from tank 3 to tank 2 through the throttle valve 11, hydraulic resistance 4, air valve 12. Liquid is drained from tank 2 and tank 3 under the influence of compressed air coming from the air balloon through electric nozzles P and 18, which is fed to and pressure control 14. The inlet and outlet pressure of the test object is measured in gauges 7, 8, 9 Y.

The specified value and the measurement of the weight of the pumped liquid into the container 2 is carried out according to the scale of the recording instrument 21.

The pumping time of a certain DOSE of fluid with a watch mechanism L5, which is activated via time relay 16 after the installation of the stationary operation, counts.

The flow rate is controlled by the throttle valve 11. To start the installation, power is supplied to the control panel 14, the strain gauge 23, the oscilloscope 6, the recording device 21, installs the tested hydraulic resistance 4 into the line, opens the throttle valve // for one turn and enters to work the pump 1.

Simultaneously, the control panel energizes the voltage of the electro-pneumatic valve 18 and the time relay 19. The electric pneumatic valve is activated and passes air to the pneumatic valve 12, which opens. The time relay is triggered, and after the installation has reached the stationary mode of operation, it turns on the clock-and-wool mechanism. Unism 15. At the same time, the weight of the liquid transferred to the tank 2 starts counting. The pressure at the inlet and outlet of the studied object is measured using measuring instruments.

When a specified fluid weight is reached in the container 2, a signal from the electrostatic sensors 19 and 20 is applied to close the pneumatic valve 12. At the same time, the watch mechanism 15 and the recording device turn off and take off. The readings are the actual weight of the unrefined liquid and the time.

Together with the closing of the ininevalve valve 12, oscillograph 6 records the processes of hydraulic shock in the pipeline. The liquid is discharged into the tank / through the non-valve 13.

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Subject and s o rt e.

Training installation for measuring hydrodynamic parameters, comprising a pump, fluid containers installed at the inlet

and a pump outlet, a set of hydraulic resistances, measuring and recording devices, a pressure gauge with an oscilloscope, a throttle valve and a can of compressed air, characterized in that

The purpose of simultaneous measurement of parameters and analysis of their interconnection, it is equipped with a control panel, time relay, clockwork, electropneumatic valves and pneumoclanes, ngii this is a capacity for liquid

at the outlet of the pump, installed on an electric strain gauge. sensors, electrically connected via a control panel to a weighing flow recorder, a time relay, a clock mechanism and electric circuits with vacuum valves that are connected to a compressed air cylinder and non-valve, and liquid tanks are interconnected through a pump , set of hydraulic resistances, throttle valve and pneumatic valves.

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