SU1492089A1 - Pump station - Google Patents

Abstract

The invention allows a wider range of performance. The pump inlet (H) 1 is connected to the outlet 6 of the separator (C) 3 and to the active nozzle of the ejector (E) 9. Inlet E 9 is connected to the reservoir (P) 4 of the pumped-out liquid, and the output to the passive nozzle 5 of the ejector stage (ES) 2, the outlet 8 of which is connected to the inlet 7 of C 3, and the active nozzle 5 to the outlet of H 1. Liquid from R 4 enters through E 9 and ES 2 to C 3. After separation, the condensed stream is fed through outlet 10 to the discharge pipe 11, and cleared through output 6 C 3 to the input H 1 and to the active nozzle E 9. From the output H 1, the liquid enters the active nozzle 5 of the ES 2. The resulting circulation post Payuschie through the liquid outlet 6 through two circuits, through 9 E and ES 2 ensures their work beskavitatsionnom mode.

Description

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The invention relates to pump construction and can be used in mining industry in installations for pumping abrasive slurries.

The purpose of the invention is to expand the range of performance by preventing cavitation modes of the ejector stage.

The drawing shows a schematic diagram of the station.

Pump station contains pump

1, an ejector stage 2, a separator 3 and a tank 4 with pumped liquid. The output of the pump 1 is communicated with the active nozzle of the 5 ejector stage

2, and the input is with the output 6 of the separator 3 and the input 7 of the latter is with the output 8 of the ejector stage 2. In this case, the station is equipped with an additional ejector 9 whose output is communicated

with a passive nozzle of the ejector stage 2, the active nozzle with the outlet of the pump 1, and the passive nozzle with the reservoir 4 of the pumped-out liquid. In addition, the output 10 of the separator 3 is connected to the pressure pipe .11.

The station operates as follows.

The liquid clarified in separator 3 through outlet 6 is supplied by pump 1 to active nozzle 5 of ejector stage 2 and to active nozzle of additional ejector 9. Pumped liquid from tank 4 through additional ejector 9 goes to

five

0

five

0

five

the entrance of the ejector stage 2, from the output 8 of which it enters the entrance 7 of the separator 3. In the separator 3, the flow is divided into clarified and condensed streams. The latter, via the outlet 10 of the separator 3, is supplied to the pressure pipe 11 and is supplied to the consumer. In this way, the nominal value of the head at the outlet of the separator 3 is increased, the blockage and cavitation of the ejector stage 2 is prevented, which provides an extension of the station's use area, as well as an increase in the operating time without major repairs.

Claims (1)

Invention Formula A pumping station containing a pump, an ejector stage, a separator and a tank with pumped liquid, the pump output communicating with the active nozzle of the ejector stage, its input - with the output of the separator, and the last one - with the output of the ejector stage, which differs from the purpose of extending the performance range by preventing cavitation modes of the ejector stage, the station is equipped with an additional ejector, the output of which is in communication with the passive nozzle of the ejector stage, the active nozzle with the pump output, and passive - with a pumped liquid reservoir.