SU1204691A1 - Joint of tubular shaft sections - Google Patents

Description

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The invention relates to tubular element joints and can be applied to pumping deep wells.

The aim of the invention is to increase reliability and reduce energy loss when operating in a liquid.

FIG. Presents the connection sections of the tubular shaft, a longitudinal section; figure 2 - section aa in fig.I.

The connection of sections 1 and 2 of the tubular shaft contains a coupling 3 mounted on the outer surfaces of the ends of the connected sections 1 and 2 and made at the ends of each section alternating rectangular projections 4 and grooves 5, the projections 4 of the same section being placed in the grooves 5 other.

Each of sections 1 and 2 is provided at both ends with sealing plugs 6 and 7, with an end face: surface 8 of one of the plugs 7 is located inside section 2 at a depth of groove 5, and the other plug 6 is made with a protruding section $ whose length t is equal to the depth groove 5.

The tubular shaft can serve as a water supply for pump stage 10; including

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The tap 1 1 and the support 12 are mounted in the housing 13 located between sections 14 and 15 of the riser pipe.

- 5 The connection of the sections of the tubular shaft works as follows.

A motor located on the surface (not shown) causes the tubular shaft to rotate. The torque is transmitted by the protrusions of the 4 sections and 2 engaged with each other, and the axial force is transferred by the couplings 3, thereby reducing the load on the threaded connections of the sections 1 and 2. The presence of sealing plugs 6 and 7 prevents the ingress of liquid into the internal cavities of sections 1 and 2, which reduces the energy loss during rotation of the shaft and allows its longitudinal stability to be maintained.

The protruding portion 9 of the plug 6, having a dot i, equal to the depth of the groove 5, and immersed in another section to this depth, serves to center the joint during installation and operation.

When the shaft rotates, the stage 10 of the pump injects fluid into: branch 1I and further along the column of lifting pipes to the next stage.

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VNIIPI Order 8497/28 Circulation 539 Subscription Branch PPP Patent, Uzhgorod, ui.Proektpl,

Claims (1)

JOINT SHAFT SECTIONS CONNECTION, comprising a sleeve mounted on the outer surfaces of the ends of the sections to be joined, and alternating rectangular protrusions and grooves made on the ends of each section, the protrusions of one section being placed in the grooves of the other, integrating in order to increase reliability and reduce energy losses when working in a liquid, each section is equipped with sealing plugs on both ends, while the end surface of one of the plugs is located inside the section at a depth of the groove, and the other plug is made with a protruding section whose length is equal to the depth of the paea. g • 1204691 refers to the connection of elements and can for pump operation