RU3625U1 - SUBMERSIBLE CENTRIFUGAL PUMP MODULAR PUMP - Google Patents

Abstract

A submersible centrifugal pump modular, consisting of a suction device, a fishing head, one or more pump sections, each of which includes a housing, a shaft, impellers and guide vanes, characterized in that the width of the impeller exit and the entrance to the guide vanes is 1.5 - 3 mm, the angles of installation of the blades of the wheel at the exit β = 22 <198> - 40 <198>, at the entrance -β = 17 - 40 <198>, the angle of installation of the blades of the guide vanes at the input β = 3 <199> 12 <198 >.

Description

Modular submersible centrifugal pump

The utility model relates to the field of petroleum engineering and is a submersible low-pressure centrifugal submersible pump for oil production.

Submersible centrifugal modular pumps for oil production with a nominal flow rate of 50 to 1250 are known. consisting of a suction device, a fishing head, section modules, each of which includes a housing, end parts, a shaft on which the impellers are mounted, and guide devices installed in the section housing (see, for example, TU 26-06-1485-87).

In the known designs of submersible centrifugal pumps, the impellers and guide vanes are made by iron casting using sand rods to obtain the calculated geometric shape of the impellers and guide vanes.

from the mechanical strength of the sand rods, as well as from the fact that the parameters of the 12 P Q-L / step sharply worsened, the width of the flow channels of the impeller and the guide vane was performed not less than 3.6 mm and 4 mm, respectively.

However, with the above dimensions of the flow channels, the pump capacity is less than 50. at the optimum mode, it was not possible to get, and if it was possible, then, h: a. by reducing the outer diameter of the impeller. In this case, the pressure of the stage decreased and the number of stages in the pump to ensure a given pressure increased sharply. This entailed an increase in the length of the pump, its mass, and as a result, such a pump did not meet the modern technical level.

Recently, due to its decline in oil production in a number of wells, there is a great need for centrifugal pumps for low-output oil from 10 to 30.

The purpose of the development of a utility model is the creation of submersible centrifugal pumps of low productivity. This goal is achieved by the fact that the width of the exit from the impeller and the entrance to the guiding apparatus performs 1.5 gZ mm, the installation angles of the blades of the wheel at the exit J 22 -; - 40, at the entrance. Set angle

ki of vanes of the guiding apparatus at the inlet 3 f 12. The working bodies of the pumps are obtained by turning the disc working working kNTK R04D I3IOO

P, oh oh

,

two parts: blade and bezlopatochny disks, which are then welded, soldered or glued together.

The essence of the utility model is illustrated by the drawing, where in Fig.1,2 shows the design of the pump, consisting of two sections, in Fig.Z, 4 presents the design of the impeller and in Fig. 5,6 - guiding apparatus.

The pump (Fig. 1,2) consists of a suction device I, one or more sections 2, interconnected by flange connections, and a fishing head 3. Section 2 has a housing 4 in which guide devices 5 are installed, shaft 6 with impellers 7 .

The pump is suspended on tubing (tubing) 8.

To obtain low pump performance (10. J30.), The width of the exit from the impeller B (Fig. 3) and the entrance to the guide apparatus B, (Fig. 5) should be 1.5 f 3 mm, and the installation angles of the impellers j 22 f 40, at the inlet 17t-40 (Fig. 4). Inlet angle of guide vanes

 3% 12 (Fig. 8).

for this purpose, the impeller is made of two parts:

a bladeless disk 9 and a blade disk 10 with the necessary profile, blades, followed by gluing or welding. The guide apparatus is also made of two parts: a bladeless disk II and a blade disk 12 of a certain profile with subsequent welding or gluing.

The pump operates as follows. The reservoir fluid enters the suction device through all the impellers 7 and the guiding devices 5, acquiring the necessary pressure is fed through the pressure pipe (tubing) 8 to the surface.

Sources of information taken into account when compiling the description:

I. Bogdanov A. A. et al. Submersible centrifugal pumps of foreign firms.

M., VNIIOENG, 1985, p. 12-13

S o o / o

Claims (1)

A submersible centrifugal pump modular, consisting of a suction device, a fishing head, one or more pump sections, each of which includes a housing, a shaft, impellers and guide vanes, characterized in that the width of the impeller exit and the entrance to the guide vanes is 1.5 - 3 mm, angles of installation of the wheel blades at the exit β _2l = 22 <198> - 40 <198>, at the entrance -β _1l = 17 - 40 <198>, the angle of installation of the blades of the guide vane at the entrance β _3l = 3 <199> 12 <198>.