SU794120A1 - Device for pumping liquid from wells - Google Patents

Description

one

The invention relates to the field of water supply, in particular to a device for pumping groundwater.

A device for pumping fluid from wells is known, which contains a seal on the lifting pipe to create an airtight container in fluid communication with the bottom of the well 1 through holes in the lifting pipe.

The disadvantage of this tubular well is that the seal does not provide a sufficiently reliable closure of the suction line from the pressure and requires considerable axial forces during installation and disassembly of the electric pump.

The closest technical solution is a device for pumping fluid from wells, including a casing, an electric pump, a socket and a sealing element 2.

The disadvantage of this device is the presence of a bore in the casing string, which requires accurate knowledge of the dynamic level marks when casing the wellbore and does not allow its use in production wells.

The aim of the invention is to simplify the design and increase operational reliability.

The goal is achieved by the fact that the bell is provided with an expanding device that includes two shoulders swivel levers, spherical plates fixed to them, interacting with the sealing element, and a cable system connected to the levers.

FIG. 1 shows a general view of the device; in fig. 2 - the device from above without a strobe; in fig. 3 - resistant plate with two shoulders lever; in fig. 4 - device mounted in the well.

The device consists of a socket 1 (Fig. 1), which is fixed on the electric pump 2. In

on the outside of the socket, on the outside, an elastic sealing element 3 is fixed, and on the inside, rotary two shoulders are mounted levers 4 with spherical plates 5 (Fig. 2 and 3),

which are adjacent to the elastic sealing element. For the separation of the pressure line from the suction line or their connection to the lugs 6 and 7 (fig. 1) of the pivoting levers nylon slings are attached

8, which are associated with the nylon cables 9 and 10, mounted on the tip of the well 11 (Fig. 4). Electrical cable 12 passes through the gland seals 13. The proposed device works as follows. Mounting device in

the well is driven by a cable 9 attached through lines 8 to the lugs 7 of the pivoting levers 5, while the cable 10 is loosened. The spherical plates 5 and the sealing element 3 are located inside the socket 1, which allows the electric pump to be freely lowered through the casing to a predetermined depth. Upon reaching the required wellbore, the device is brought to the working position, for which the cable 10 is tensioned and the cable 9 is loosened. The pivot arms 4 press the spherical plates 5 and the sealing element 3 against the wall of the casing 14 and overlap the suction line from the pressure pipe. Water is pumped to a consumer through a casing 14.

The advantage of the proposed device is that it can equip both new and production wells, eliminating water-lifting pipes for mounting the electric pump, simplifies assembly and disassembly operations for installing the electric pump in the well and lifting transport equipment, ensures reliable shut-off of the pressure line from suction.

The use of the device in the national economy gives an economic effect for

expense of saving water-lifting pipes, reducing the cost of installation and dismantling operations and improving the reliability of operation of wells.

Estimated amount of the annual economic effect from the use of a single device will be 500 rubles.

Claims (2)

1. USSR Author's Certificate No. 279485, cl. E OZV 3/12, 1967. 2. USSR author's certificate number 602660, cl. E OZV 3/06, 1976 (prototype). .four