SU1534488A1 - Training aid on hydraulics - Google Patents

Abstract

A training device in hydraulics is in the field of laboratory equipment and can be used to study the pressure movement of a fluid. The aim of the invention is the expansion of didactic possibilities. The training device includes a housing, on the front panel of which pressure and drain tanks are located with quick-detachable connectors for fastening replaceable modules. In the receiving tank is placed movable overflow pipe installed in the glands. The liquid flow meter contains a two-chamber vessel placed on the axis with a permanent magnet fixed to it and a reed switch interacting with it electrically connected with the control input of the micro calculator. 1 hp f-ly, 2 ill.

Description

The invention relates to the field of laboratory installations for the course of hydraulics and can be used to clarify the patterns of pressure and free-flow fluid.

The purpose of the invention is the expansion of didactic possibilities by demonstrating pressure movement, as well as improving the accuracy of flow measurement.

Figure 1 presents the training device, a general view; Fig. 2 is an electrical circuit of a flow meter.

The hydraulics training device includes a pressure tank 1 equipped with an overflow pipe 2, as well as a supporting pipe 3 and a drain pipe with 4 pipes and a leveling grate 5. A connection pipe with cable 6 is installed in the tank to fix the hydraulic resistance modules. Reception tank 7 is equipped with overflow

tube 8, which the lower end passes through the gland 9, and its upper end is connected to the screw elevator 10. In the lower part there is a nozzle with a clamp 6 for mounting the hydraulic resistance modules, similar to the clamp installed on the pressure tank I, the pressure and receiving tanks are attached to the panel 11, on which a set of piezometers 12 are mounted, which are connected using transparent, for example, polyvinyl chloride hoses with fittings on hydraulic resistance modules or pressure and receiving tanks (not shown), p 13, mikrokalkul torus 14 and two 1) -shaped 15. Below the piezometer pipes with clamps 6 placed tray 16 with a variable slope, having a head part 17 and discharge outlet 18. Because the tray water enters the sump 19,

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then, through the piping system, it enters the swinging two-chamber vessel 20, which is fixed on the axis 2 1, and a permanent magnet 22 is installed on its side wall. To start and stop the flow meter, the electromagnet 23 is installed on the top cover. From the flow meter, water flows into the drain pipe 24 Panel 1 is fitted with a canister 25 for coloring liquid.

The reed switch 26, which interacts with the magnet 22, is electrically connected to the microcalculator 14 (for example, BZ-14 Electronics), specifically to terminals 16 and 31 of the K145IK2 chip, which are respectively marked with the positions 27 and 28.

Training device works as follows.

The water entering the pressure tank, passing the leveling grid 5, reaches the tip of the overflow pipe 2, maintains a constant level of liquid, which can be fixed on one of the piezometers 12. Through one of the hydraulic connection modules installed in the clamps 6, receiving tank 7, here the level of the liquid can be set at any station depending on the level of the tep of the PGF ... i1 pipe 8. The speed of the pump will depend on the preg / horizontal in pressure om triem. The tanks, which are fixed with DN meters of 12 from the battery, the flow rate of Bo-1 passing through the module is determined by the microcalculators 14, which is switched on simultaneously with the electromechanical 23, and the change in head over the module by piezometers 12 of the battery.

When studying the fluid flow regimes, a transparent pipe can be installed as a module to increase the visibility, and tinting fluid is introduced into the pressure tank nozzle from the tank 25.

Using the U-shaped piezometers 15, the density, specific load and salinity of the test liquid can be determined by the comparison method.

The same data can be obtained using a single U-shaped piezometer and pressure gauge 13.

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To measure the flow rate of the fluid, it is necessary to turn on the electromagnet 23. In this case, the swinging two-chamber vessel 20 is able to reciprocate around the axis 2I.

The passage of the permanent magnet 22 in the zone of the reed switch 26 will cause its closure, which corresponds to pressing a key on the keyboard of the micro calculator. In the calculator, contacts 16 and 31 of the K145IK2 microcircuit are closed, and the volume of the merging liquid is summed up, which eliminates additional calculations.

The training device performs, a large number of laboratory work on the pressure movement of a liquid, to expand the range of investigated members; increase the consistency and exact r :, the laboratories carried out.

F o rg u. Of invention

Claims (2)

1. A hydraulics training device containing a korg-ic, on the front of which a pressure tank is installed, a tank with a dye liquid, a set of piezometers with connecting corpses placed above the pallet, a set of hydraulic resistance modules, different inn, , with the whole expansion of didactic possibilities due to the demonstration of pressure movement, it contains a receiving tank with a flow pipe installed movably inside it and clamps for fastening the hydraulic resistance modules placed on the pressure and receiving tanks on the side surfaces opposite each other, 2. Instrument pop. 1, characterized in that, in order to increase accuracy, the flow meter contains a two-chamber vessel, a permanent magnet placed on the vessel body, a reed switch installed with the possibility of interaction with a permanent magnet, and a micro calculator, to the control input of which the reed switch is connected. 27 yy ifc 26 / c  2S - / 27