SU1225927A1 - Guide vanes of multistage impeller pump - Google Patents

Description

The cooling system relates to the pumping station, namely, to the designs of the transfer guide vanes of the multi-stage vane pumps of the centrifugal and diagonal tank.

The purpose of the invention is to reduce hydraulic losses and to streamline the manufacturing technology of the apparatus.

Fig. 1 shows a guide apparatus, a cross section; in fig. 2 is a view of L in FIG. one; in fig. 3 is a view of B in FIG. 1 (arrows indicate the direction of flow).

The guide vane of a multistage vane pump contains a disk 1 with a central bore 2 and a hub 3 and blades A fixed on it with inlet edges 5, forming channels 6 with radially variable width and consisting of a diffuser outlet section 7 on one side of the disk 1 The inverse supply section 8 is on its other side and the conversion section 9 located between them. The blades 4 have a constant thickness, and the channels 6 have a variable axial width increasing from the entrance edges

5 to the inlet 8. When the entrance edges 5 are located, there are r planes perpendicular to the axis of the guide vane.

The guide vane operates as follows.

Liquid exiting the worker

wheels comes directly

on the periphery of the disk to channels 6, (in

diffuser outlet section 7),

I open it axially and radially, and, having walked through them, enters the input of a subsequent impeller or exit to the consumer. In the guiding apparatus, energy losses due to friction are reduced due to the reduction of the total fluid path through the channels 6. In addition, the design of the apparatus eliminates sharp turns when the fluid passes from one side of the disk to the other, which also reduces losses. The device has open channels and blades 4 of constant thickness. Due to this, it can be performed by various high-performance

methods that exclude manual cleaning of channels, which reduces manufacturing costs and simplifies manufacturing technology. In addition, the structure of the plant is smaller.

/ l

Editor G. Volkova

Order 2108/22 Circulation 586 Subscription

VNIIPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Phage.Z

Compiled by V. Devisilov

TehredN.Zeres Proofreader M. Sharoshi

Claims (1)

MULTI-STAGE VANE PUMP GUIDELINES, containing a disk with a central hole 3734082 / 25-06 04/28/84 04/23/86. Bull. Number 15 Kharkov Polytechnic in.I. Lenin M.P. Krutko, A.P. Bodrunov, Stetsenko and V.V. Vizirsky 621.671 (088.8) Lomakin A.A. Centrifugal and axle M.-L. 110. Fig. And the hub mounted on it vanes with input edges, forming channels of variable in the radial direction of width and consisting of a diffuser outlet section on one side of the disk, a return lead section on the other side and a transfer section located between them, characterized in that, in order to reduce hydraulic losses and simplify the manufacturing technology of the apparatus, the blades have a constant thickness, and the channels have a variable width in the axial direction, increasing from the input edges to the bottom In this case, the latter are located along the bones ® of the bone perpendicular to the axis of the guide vane. 1225427