SU1286821A2 - Pumping station - Google Patents

Abstract

The invention relates to hydraulic machine building and allows increasing the reliability of a pumping station by preventing overflow of downstream containers while reducing pressure in the pressure manifold. When the last of the operating pump units 4 is disconnected (station prohibition), the pressure in the pressure manifold 7 drops to a certain value, and the piston of the hydrodynamic pressure valve 17 is lowered under its own weight. Here, the connecting openings of the valve covers 17 communicate with the atmosphere through the drainage opening. The pressure gauge 8 is emptied of fluid and is prepared for re-operation from a zero point. I zp f-ly, 3 ill. WITH

Description

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FIELD OF THE INVENTION The invention relates to a hydromechanical tire manufacturer, namely to automatic pumping stations.

The purpose of the invention is to increase reliability by preventing overflow of downstream containers while reducing pressure in the pressure manifold.

FIG. 1 shows a diagram of a pumping station; in fig. 2 - valve of dynamic dynamic pressure, longitudinal section; in fig. 3 .- valve top view.

The pumping station contains an anankamer 1, pumping units 2-4 with eaporny organs 5 and control gear 6, a pressure manifold 7 and a pressure gauge 8 connected to it with critical settings 3 and 10. The avant-chamber 1 has a float 11, the pressure meter 8 is made in the form of the above and downstream containers 12 and 13, alternately connected by pressure, drain and bypass tubes) 4-16, with the latter pressure pipe, ka 14 is fixed on the float 11.

The station is equipped with a valve 17 of hydrodynamic pressure 5 communicated with downstream tanks 13 and a pressure manifold 7. The valve 17 of hydrodynamic pressure can be made in the form of a vertical cylinder 18 (Fig. 2) equipped with lower and upper heads 19 and 20 with connecting and drainage - Versions 21-23 (Fig. 3), as well as a piston 24 with an elastic sealing element 25 at the upper end, the drainage hole 23 located in the center of the top cover 20. The connecting holes 21 in the top cover 20 are opposite the seal The connecting element 25 and communicated with the downstream containers 13, and the connecting hole 22 in the bottom cover 19 is in communication with the pressure manifold 7.

The pumping station works in a DIM manner.

When the pumping units 2-4 are disconnected, the elastic element 25 of the piston 24 of the valve 7 is in the lower position, together the downstream tanks 13 with the atmosphere through the open holes 2 and 23.

When starting the first of the pumping units 2, 3 or 4 elastic ele

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Ment 25 of the piston 24 is raised by the fluid pressure of the operating pump unit and closes the orifices 21, separating the downstream tanks 13 with the atmosphere.

When the pressure in the pressure manifold 7 rises (one of the locking bodies 5 opens), water rises through the pressure tube 14 into the upstream tank 12, from which the drain tube 15 is forced out through the airbag formed by the bypass tube 6 into the downstream tank 13.

Filling the space to the lower edge of the pressure tube 14, the water begins to increase the pressure in the downstream tank 13, which causes an increase in the level of liquid in the pressure tank

: tube 14, and then displacing it into the next upstream tank 12, and so on until the fluid is displaced through the last pressure tube 1 4.

The piston 24 of the valve 17 is held in the upper position by the pressure of one of the operating pumps. units 2, 3 or 4, firstly, due to the increase in the effective area

from the bottom of the hole 22 over the effective area from the side of the holes 2, secondly, due to lower pressure values from the side of the holes 21. Change in water level

in avant-chamber 1, the Q-characteristic is shifted And pumping units 2-4. Since the pressure tube 14 with the float also moves, the critical settings 9 and 10

are maintained at the same level with respect to the liquid in the avankamer 1.

When the liquid in the pressure tube 14 reaches the minimum

Start-up equipment 6 switches on the next pump unit 3 or 4 and opens its stop valve 5. The level in the pressure tube 14 rises. With further

lowering the level of fluid in the pressure tube 14 and reaching the next critical setpoint 9, the third pumping unit 4 is turned on and its closure member 5 is opened. Similarly,

Disconnection of pumping units 2-4 occurs when the level of liquid in the pressure tube 14 rises. When the last operating pump is disconnected

Units 4 (prohibition of the station operation) the pressure in the pressure manifold 7 drops to a certain value, and then the pore 24 is lowered under the action of its own weight. In addition, the connecting ports 21 communicate with the atmosphere through the drain hole 23.

The pressure gauge 8 is emptied of fluid and is prepared for re-operation from a zero point.

Claims (2)

1. Pump station on the bus. St. No. 1257292, characterized in that, in order to increase and reliability by preventing overflow of downstream tanks with a decrease in pressure in the pressure manifold, the station is equipped with a valve guide MO KS at level L min level  PS 1 t 13 -njidr / j 2868214 native pressure communicated with downstream tanks and pressure manifold. five fO 15 20 2. Pump station under item I, characterized in that the valve of hydrodynamic pressure is made in the form of a vertical cylinder, equipped with lower and upper covers with connecting and drainage holes, as well as with an elastic sealing element on the upper end, and the drainage hole is located in the center of the upper rim, the connecting holes in the top cover are opposite the sealing element and are in communication with the downstream containers, and the connecting hole in the lower collar communicates with the pressure head collector.  1L " Iff iff 15 CPUS. 7 25 2 21 21 2i Fig.Z