SU1513185A1 - Electric hydrodynamic positive displacement pump - Google Patents

Abstract

The invention allows to reduce the energy consumption of an electrodynamic volumetric pump. In the housing 1 with the formation of the drive and pump chambers 2, 3, a movable separator 4 is installed. In the chamber 2 filled with liquid 5 and steam, an electrode 6 insulated from the housing 1 is connected to one pole of the high voltage source 7. The electrode 6 is made in the form of a flat lattice and is installed in the vapor space at the boundary 8 of the vapor-liquid equidistant interface. When a high voltage is applied to the electrode 6, the phase equilibrium is disturbed and the pumped medium enters the chamber 3. When the separator 4 is moved downward, the voltage is turned off, which causes the liquid 5 to evaporate, and the separator moves to the upper position. The pumped medium comes to the consumer. 4 il.

Description

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The invention relates to pump construction, relates to electrodynamic positive displacement pumps, and can be used in various industries for pumping fluids.

The aim of the invention is to reduce energy costs.

FIG. 1 shows a diagram of the pump in the lower position of the separator, made in the form of a piston; Fig. 2 shows the same in the position of the piston corresponding to the end of the pressure stroke; in fig. 3 - diagram of the pump with a separator made in the form of a diaphragm in its lower position; in fig. A is a diagram of a pump with a diaphragm at the end of a pump stroke.

The body contains a housing 1, in which a movable separator 4 is installed in the formation of a driving 2 and pumping 3 chambers; the other pole of which is connected to the housing 1. The electrode 6 is made in the form of a flat grid and is installed in the vapor space of the vapor-liquid interface 8 equidistant to it, and the supply source 7 is less than the voltage of the steam about the gap between the electrode 6 and the boundary 8 of the vapor-liquid interface. Pump chamber 3 has suction 9 and discharge 10 nozzles with suction 11 and discharge 12 valves, respectively.

The pump works as follows. At the initial moment, the movable separator k is in the upper position and is kept there by the vapor pressure in chamber 2, while the vapor in chamber 2 is in thermodynamic equilibrium with the liquid. The voltage on the electrode b is not applied at this time.

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At the moment of applying high voltage from source 7 to electrode 6 between electrode 6 and interface 8

vapor - liquid an electrostatic field arises, which leads to the curvature of the interface of the vapor-liquid phase 8 and shifts the phase equilibrium. The steam condenses and

0 the pressure in the drive chamber 2 drops. In this case, the separator is moved to the lower position. During the movement of the separator 4, the suction valve 11 opens downward and into the pump

5, chamber 3 is sucked by the pumped medium.

After the separator t is moved down, the high voltage source 7 is disconnected, the electrostatic field between the electrode 6 and the vapor-liquid interface 8 disappears, the vapor-liquid thermodynamic equilibrium again disrupts and returns to its original state. 5, and the pressure in chamber 2 rises. The separator 4 is moved to the upper position, having performed an injection stroke, during which the pumped medium is expelled from the pumping chamber 3 through the discharge valve 12 to the consumer.

Then the cycle repeats.

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Claims (1)

Invention Formula An electrohydrodynamic volumetric pump comprising a housing in which, with the formation of drive and pump chambers, a movable separator is installed, and in the drive chamber partially filled with liquid and partially with steam, an electrode insulated from the case is connected to one pole of a high voltage source, that, in order to reduce energy consumption, the electrode is made in the form of a flat lattice and is installed in the vapor space at the interface of the vapor-liquid equidistant to it. Physical.ch