SU1300300A1 - Bench for checking level indicator gauges - Google Patents

Description

11300300

The invention relates to metrology and measuring equipment, mainly to calibration stands, and can be used to determine the static characteristics of 5 non-measures, in particular aircraft fuel meters,

The purpose of the invention is to increase productivity,

FIG. 1 shows a stand for controlling level gauges, general view; in fig. 2 shows section A-A in FIG. one.

The bench contains a measuring tank 1, a control sensor 2, a main 3 j and a drain 4 tanks, a shell 5, a telescopically expandable pipe 6, a nut 7, a lead screw 8, a bevel gear 9, a sensor for the overflow partition position 10, a conical gear gear 11, pulley 12, cable 13, pulley 14, pulleys 15, spring 16, hydraulic cylinder 17, piston 18 of the hydraulic cylinder, one 19 and the other 20 hydraulic cylinder nozzles, pipeline 25 21., first nozzle 22 (vspodnoy) system, pump 23, Electromagnetic hydraulic valves 24-27, the second outlet 28 is hydraulic th

2

The cable is mounted through the cable section 13. The latter is passed through the hole in the nut 7.

The stand is equipped with a hydraulic cylinder 17 with a piston 18. The hydraulic cylinder 17 is connected to the first cylinder of the hydraulic cylinder 19 with the main reservoir 3, and with the help of another pipe 20 and pipe 21 to the first outlet pipe of the hydraulic system 22. The hydraulic system consists of electromagnetic hydraulic valves 24-27, which are included so that they form a bridge circuit, and droplets 30. The first outlet of 5; hydraulic system 22 is connected via pipe 21 to another pipe of hydraulic cylinder 20. The second outlet of the hydraulic system 28 is connected to drain tank 4 via pipe 29. Pump 23 is included in the input diagonal of the bridge hydraulic system, the output of pump 23 is connected to throttle inlet 30, exit which is connected to the measuring tank 1 pipe 31.

The stand's job is to be

systems, piping 29, throttle 30, jn, h 31. Control (verification) of the sensor 2 of the level gauge is performed or in the mode. Measuring tank 1 with a controlled sensor 2 and the main tank 3 are interconnected according to the principle of matching vessels (for example, welded on four forming two cylinders after the surface between forming measuring and main tanks are cut). Measured 1 and 3 tanks are installed above drain tank 4. Shell 5 is fixed on the upper end of the telescopically expandable pipe 6. The lower end of this pipe can be moved into the auxiliary tank 4. Nut 7 is rigidly connected to the upper part of the telescopically expandable pipe 6. At the upper end the lead screw 8 is rigidly fixed to a bevel gear 9 and the movable part of the sensor 10 is installed, the position of the overflow partition. A conical gear 11 is coupled to the wheel 9. On the axis of this neck—) “the conical toothed gear rotates a pulley 12 rigidly. 8 and the mechanism

sensor 10 position of the overflow partition. Nut 7 and tightly coupled

Spring 16, which provides the power circuit of the kinematic chain, mouth

2

The cable is mounted through the cable section 13. The latter is passed through the hole in the nut 7.

The stand is equipped with a hydraulic cylinder 17 with a piston 18. The hydraulic cylinder 17 is connected to the first cylinder of the hydraulic cylinder 19 with the main reservoir 3, and with the help of another pipe 20 and pipe 21 to the first outlet pipe of the hydraulic system 22. The hydraulic system consists of electromagnetic hydraulic valves 24-27, which are included so that they form a bridge circuit, and droplets 30. The first outlet of 5; hydraulic system 22 is connected via pipe 21 to another pipe of hydraulic cylinder 20. The second outlet of the hydraulic system 28 is connected to drain tank 4 via pipe 29. Pump 23 is included in the input diagonal of the bridge hydraulic system, the output of pump 23 is connected to the inlet of throttles 30, output which is connected to the measuring tank 1 pipe 31.

The stand's job is to be

The stroke (from the minimum level of liquid in the measuring 1 and the main 3 tanks to the maximum) or in the back-up mode (from the maximum, from the minimum to the minimum).

In the forward stroke mode to reproduce the specified fluid level

40 includes electromagnetic hydraulic valves 25 and 27 (with valves 24 and 26 closed). The working fluid from (the beer tank 4 through pipelines 051 29 and 21 and the open electromagnetic hydraulic valves 27 and 25 is supplied by means of a pump 23 to the hydraulic cylinder 17 and presses its piston 18 from top to bottom. The piston 18 descends and displaces the liquid BONE from under the piston through the first nozzle of the hydraulic cylinder 19 into the main 3 and measuring 1 tanks. At that, the cable 13 moves clockwise in the direction of movement and through the pulley 12 sits a telescopically extending pipe 6 and the shell 5 moving up until the sensor 10 The cages do not signal the achievement of a predetermined (reproducible) level of the fluid, thereby closing the electromagnetic hydraulic valve 25. The flow of fluid into the space above the piston of the hydraulic cylinder 18 into the main 3 and into the measured 1 tanks stops.

After closing the electromagnetic hydraulic valve 25, the liquid level is stabilized in the main 3 and dimensional 1 tanks. Leveling is accomplished by supplying fluid to the measuring tank 1 from the drain tank 4 through pipe 29, pipe 28, open electromagnetic hydraulic valve 27, pump 23, pipe 31, throttle 30. At the same time, due to the high hydraulic resistance

the ratio of the movement mechanism of the overflow partition and the ratio between the cross-sectional areas of the hydraulic cylinder 17, the measuring 3 and the main tank 1 and the overflow pedrome 30 provides a small amount.

„„ -25 partitions (telescopically expanding the flow rate entering the measuring ... h ... ... ”

tank 1. The pump 23 at the same time in the mode of small producer -. nosti.

The working fluid from the main tank 3 flows by gravity through 30 shell 5 into the drain tank 4. In measured 1 and main 3 tanks, a predetermined level of fluid is transmitted to the controlled sensor 12.35

My pipe 6) is chosen from the condition of equality of displacement of the overflow partition to the increment of the liquid level in the main 3 and 1 dimensional tanks.

The rise of the fluid and the movement of the overflow partition occur simultaneously during the operation of the pump 23 in the high-capacity mode (with the electromagnetic hydraulic valves 27 and 25 open).

This provides improved performance of the proposed stand in comparison with the prototype.

In the reverse mode, the solenoid valves 24 and 26 are turned on to reproduce a predetermined level of fluid (valves 25 and 27 are closed at the same time). The working fluid from the volume above the piston of the hydraulic cylinder 17 through the nozzle 20, pipe 21, the nozzle 22, electromagnetic hydraulic stand for controlling the sensors of the level gauges, containing filled with working fluid and communicating between

cue valves 24 and 26, pump 23, patr-a-dimensional and main tanks

side 28, the pipe 29 enters the auxiliary reservoir 4. Due to the pressure difference under and above the piston of the hydraulic cylinder, the latter rises. The working fluid from the measuring 1 and main 3 tanks through the pipe 19 enters the volume under the piston of the hydraulic cylinder 18. The cable 13 moves to the left and through the pulleys 14 and 15 turns the pulley 12, bevel gears 11 and the wheel 9, the driving screw B and the mechanism of the 10 position overflow partition. The nut 7 and the shell 5 connected to it and the tele-kinematic blocking partitioning unit mounted in the main tank with the possibility of height adjustment and separating it from the main drain tank, as well as the pumping pump, characterized by that, in order to improve performance, stand

j is equipped with a hydraulic cylinder with two branch pipes located on both sides of the piston, kinematically connected with the mechanism for displacing the overflow partition, throttle and four

cylinder 18

The pipe b, which is gradually extended, is moved until the overflow partition position sensor 10 gives a signal that the specified reproduced fluid level has been reached. This closes the electromagnetic hydraulic valves 24 and 26 and opens the valve 27. The flow of fluid from the volume above the piston to the drain tank 4 stops. The shell 5 and the telescopically expandable pipe 6 are stopped.

After the said closing of the solenoid valves 24 and 26 and opening of the valve 27, the level of the liquid in the main 3 and 1 dimensional tanks is stabilized. The transfer ratio of the movement mechanism of the overflow partition and the ratio between the cross-sectional areas of the hydraulic cylinder 17, measuring 3 and main 1 tanks and overflow ne.

partition walls (telescopic expansion ... h ... ... "

My pipe 6) is chosen from the condition of equality of displacement of the overflow partition to the increment of the liquid level in the main 3 and 1 dimensional tanks.

The rise of the fluid and the movement of the overflow partition occur simultaneously during the operation of the pump 23 in the high-capacity mode (with the electromagnetic hydraulic valves 27 and 25 open).

This provides improved performance of the proposed stand in comparison with the prototype.

Claims (1)

Formula inventions A bench for monitoring the gauges of the gages containing the fluid filled and communicating between a measured and main tanks kinematically connected to the movement mechanism and the reference unit relegible partition, installed in the main tank with the possibility of height adjustment and separating from the main drain tank, as well as the booster pump, characterized in that, in order to improve performance, the stand equipped with a hydraulic cylinder with two pat-. logs located on both sides of the piston, kinematically associated with the mechanism for moving the overflow partition, the throttle and the head electromagnetic hydraulic valves connected by a bridge circuit, in one diagonal of which a pump is installed, the output of which is also connected via a choke with a measuring tank, while the second diagonal is connected respectively to the drain tank and one of the hydraulic connector of the hydraulic cylinder. zan with the main tank. Editor K. Voloshchuk Compiled by A.Tegay Tehred N.Glushchenko Order 1140/39 Circulation 694 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Proekdna str., 4 Thebes.2 Proofreader G. Reshetnik