RU2418984C1 - Vortex pump stage - Google Patents

Abstract

FIELD: engines and pumps. ^ SUBSTANCE: vortex pump stage includes impeller 3 with blades 4 and two parts1, 2 of stator with spacer ring 9, inlet and outlet openings 6, 7. Openings are axial and divider is located between them. Channel 10 interconnected with delivery and suction areas is made in spacer ring 9. ^ EFFECT: invention allows reducing linear sizes of pump, increasing flow rate of working liquid and improving wear resistance. ^ 7 cl, 9 dwg

Description

The invention relates to the field of energy and is intended for pumps with a circular or transverse flow of a working substance, namely for vortex pumps.

A known stage of a vortex pump, comprising an impeller with vanes and two parts of the stator with a spacer ring, as well as inlet and outlet windows, between which a separator is located (see patent SU 280743, class F04D 5/00, published 03.09.1970). The disadvantages of the known devices are cumbersome and lack of operational efficiency.

The objective of the invention is to remedy these disadvantages. The technical result consists in reducing the linear dimensions of the pump, increasing the flow rate of the working fluid and increasing wear resistance. The problem is solved, and the technical result is achieved by the fact that in the stage of the vortex pump, including the impeller with vanes and two parts of the stator with a spacer ring, as well as inlet and outlet windows, between which there is a separator, the inlet and outlet windows are made axial, and in a channel is made in the distance ring, communicating with the respective areas, and parts of the stator can be coordinated by a pin located in the distance ring. The pump stage can be equipped with two or more dividers. Separators can be made in one with one of the parts of the stator and the spacer ring. Through holes are preferably provided in the impeller disk. In the area of end gaps between the impeller and the stator, rings of wear-resistant material are installed on the stator and (or) the impeller. In the Central part of the periphery of the blades, it is advisable to perform a retaining ring.

Figure 1 shows the Central axial section of the proposed stage;

figure 2 is a cross section from side a in figure 1;

figure 3 is a transverse section from side B in figure 1;

figure 4 is a Central axial section along the plane GG in figure 2;

figure 5 - circular scan along the line DD in figure 2;

in Fig.6 - the same as in Fig.2, in the case of supply with two separators;

in Fig.7 - the same as in Fig.3, in the case of supply with two separators;

in Fig.8 is an element of the proposed design in cross section, as in Fig.1;

figure 9 is an element of the proposed design in cross section, as in figure 4, in the case of supplying the impeller with a bandage.

The vortex pump stage contains a stator consisting of two parts 1 and 2 and an impeller 3 with vanes 4 on the periphery. A free channel 5 is made in the stator, covering the impeller blades from the periphery and sides. The working medium enters the suction window 6 and is fed into the discharge window 7, and both windows are axial. The discharge and suction areas are separated by a separator 8 and are located in a free channel 5. A distance ring 9 is located in the stator, which regulates the gap between the stator and the rotor. The separator 8 can be made in one with the stator and the spacer ring 9. A channel 10 is made on the periphery of the ring 9, through which the corresponding injection and suction areas of the cavities of the free channel 5 are communicated, along with communication through the peripheral part of the inter-blade space of the impeller 3. On the separator 8, sinuses 11 can be made that increase the cross section between the cavities of the free channel 5. In the wheel and / or stator, grooves are made in which rings 12 of wear-resistant material are installed and, allowing to reduce wear of parts. In the impeller 3, through holes 13 are made, which relieve axial forces. The stator parts can be coordinated by a pin 14 located in the distance ring 9. A band 15 can be made in the central part of the periphery of the blades 4, increasing the rigidity of the blades 4 both during processing and during pump operation.

The pump operates as follows.

The working medium passes through the suction window 6 and enters the free channel 5, where it is discarded by the blades 4 of the impeller 3 to the periphery, including the channel 10. The accelerated medium under pressure through the discharge window 7 is transferred to the next pump stage.

The supply of the stage with two or more separators 8 allows to increase the flow rate of the working fluid and reduce the radial forces acting on the impeller 1. Performing the inlet and outlet of the medium through the axial windows 6 and 7 allows to reduce the diametrical dimensions and simplify the design of the pump. The implementation of the channel 10 at the periphery of the distance ring 9 simplifies the organization and support of the vortex flow. The coordination pin 14 allows you to speed up and simplify the assembly of the stage, while ensuring reliable fixing of the relative angular position of the parts.

Claims (7)

1. The stage of the vortex pump, comprising an impeller with vanes and two parts of the stator with a spacer ring, as well as inlet and outlet windows, between which a separator is located, characterized in that the inlet and outlet windows are made axial, and a channel communicating in the remote ring is made with discharge and suction areas. 2. The pump stage according to claim 1, characterized in that it is equipped with two or more separators. 3. The pump stage according to claim 1, characterized in that the separator is made integral with one of the stator parts and the spacer ring. 4. The pump stage according to claim 1, characterized in that through holes are made in the impeller. 5. The pump stage according to claim 1, characterized in that in the region of the end gaps in the impeller and (or) the stator, rings of wear-resistant material are installed. 6. The stage of the pump according to claim 1, characterized in that in the Central part of the peripheral end of all the blades made a bandage. 7. The stage of the pump according to claim 1, characterized in that the distance ring is made integral with the stator.

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