RU42866U1 - PUMP INSTALLATION - Google Patents

Abstract

A pump installation, including a centrifugal supercharger, a base made in the form of flanges, a housing, an oil seal with a crown, a discharge pipe, sliding bearings and an electric motor, characterized in that one section of a submersible borehole electric pump is used as a supercharger, with the discharge side facing the drive, the shaft which is connected to the motor shaft through an intermediate shaft; base flanges are interconnected by struts; the stuffing box packing is multi-row, separated by spacer sleeves, which are in longitudinal section a channel profile facing open side to the intermediate shaft and forming a cavity for lubricant with it; grease nipples are installed on the outer wall of the housing in the areas of the spacer sleeves; a sliding bearing from the side of the upper end of the intermediate shaft is installed inside the crownbox, the latter being preloaded by a Belleville spring through a ring with a centering collar; the discharge pipe is located below the lower flange.

Description

The proposal relates to the field of pump engineering, more specifically to centrifugal pumping units, and is intended for use in the oil industry for pumping industrial water from tanks (bulits) into the receiving cavity of a pump that pumps this water into the well to extract the oil-water mixture from other wells.

A pumping station is known for pumping process water from bulit to a receiving pipe, consisting of an enclosed space, two centrifugal drainage pumps placed in it, an accumulation tank connecting the drill with suction nozzles of a centrifugal pipeline pump with a non-return valve, and gate valves (cluster block pump station with pumps TsNS-180, passport 5578.00.00.000PS. SPKTB Glavneftemashremont, 1987. A copy is attached on 3 sheets).

The disadvantages of the pumping station are:

- significant capital investments due to the presence of a closed room of a working and backup pumps, as well as a drainage pump with a capacity and several valves, extending the payback period of the station;

- increased operating costs due to the low load factor of the pumps and the need for heating the enclosed space and more frequent maintenance of drainage pumps.

The closest in technical essence to the proposed one is a pump installation, including a centrifugal supercharger, a base made in the form of flanges, a housing, an oil seal with a crown, a discharge pipe, plain bearings and an electric motor (Catalog of pumping equipment, part I, Russia and the CIS. Hydromashservice, 1993, p.25. A copy is attached on 3 pages).

Significant disadvantages of the device are:

- significant operating costs due to the need for normal operation of the installation of frequent preloads of the packing at high pressures;

- high metal consumption;

- low life of the packing.

The technical task of the utility model is to create a pumping unit that has low operating costs, has low metal consumption and increased life of the packing.

This problem is solved by the proposed pump installation, including a centrifugal supercharger, a base made in the form of flanges, a housing, an oil seal with a crownbox, a discharge pipe, a plain bearing and an electric motor.

What is new is that a single section of a borehole submersible electric pump is used as a supercharger, with the discharge side facing the drive, the shaft of which is connected to the motor shaft through an intermediate shaft; base flanges are interconnected by struts;

the stuffing box packing is multi-row, separated by spacer sleeves, which are in longitudinal section a channel profile facing open side to the intermediate shaft and forming a cavity for lubricant with it; grease nipples are installed on the outer wall of the housing in the areas of the spacer sleeves; a sliding bearing on the side of the upper end of the intermediate shaft is installed inside the crownbox, the latter being preloaded by a Belleville spring through a ring with a centering shoulder the discharge pipe is located below the lower flange.

Figure 1 shows a General view of the proposed pump installation in longitudinal section.

Figure 2 is a section aa of figure 1.

Figure 3 is a diagram of the strapping of the proposed pump installation with a suction pipe of a cluster pump station (SPS).

The pump installation consists of a section of a borehole submersible electric pump 7 (Fig. 1), a base made in the form of flanges 2 and 3, interconnected by posts 4, body 5, inside which an intermediate shaft 6 is installed, and between the body and the shaft - multi-row (not less than two) stuffing box 7. The rows are divided by spacers

bushings 8, representing in longitudinal section a channel profile, open side facing the intermediate shaft 6 and forming a cavity 9 with it, filled with a lubricant, for example, solid oil. On the housing 5 in the area of the spacer sleeves 8, grease fittings 10 are mounted, connected by a channel to the cavity 9. Slide bearings 11 and 12 are installed at the ends of the intermediate shaft 6, the first of which is installed inside the crown bracket 13, made in the form of a sleeve with an outer shoulder, preloaded on top of a Belleville spring 14 interacting with the ring 15. The sleeve shaft 16 and 17 the intermediate shaft is connected respectively to the shaft of the electric motor 18 and the shaft section of the borehole submersible electric pump 1. The discharge pipe 19 is connected to the housing 5 below the lower th flange 3.

The pump installation operates as follows.

It is installed on the bulite 20 (figure 3). After turning on the electric motor 18, the section 7 of the submersible borehole electric pump supplies drainage water from the boule 20 to the discharge pipe 19 and from there it is sent to the discharge pipe 21, and then through the check valve 22 it enters the suction pipe 23 of the cluster pump station (SPS).

The proposed pump unit allows you to:

- reduce operating costs due to the fact that the clamp multi-row packing is gradually carried out by the elastic force of the Belleville spring;

- reduce metal consumption by creating the necessary rigidity by introducing racks into the structure (instead of the box structure);

- increase the service life of the packing due to its multi-row and the creation of a cavity to accommodate a thick lubricant.

Claims (1)

A pump installation, including a centrifugal supercharger, a base made in the form of flanges, a housing, an oil seal with a crown, a discharge pipe, sliding bearings and an electric motor, characterized in that one section of a submersible borehole electric pump is used as a supercharger, with the discharge side facing the drive, the shaft which is connected to the motor shaft through an intermediate shaft; base flanges are interconnected by struts; the stuffing box packing is multi-row, separated by spacer sleeves, which are in longitudinal section a channel profile facing open side to the intermediate shaft and forming a cavity for lubricant with it; grease nipples are installed on the outer wall of the housing in the areas of the spacer sleeves; a sliding bearing from the side of the upper end of the intermediate shaft is installed inside the crownbox, the latter being preloaded by a Belleville spring through a ring with a centering collar; the discharge pipe is located below the lower flange.