Model of hydraulic machines

 

(57) Abstract:

Usage: in the experimental equipment designed for the study of hydrodynamics of the flow in the impellers of hydraulic machines by visualizing them in the thread. The essence of the invention: hydraulic machines includes a housing 1 with a transparent cover 2, the impeller 4 with the blades 5, the leading disk (D) 6 and a transparent covering disc 7, the shell (About) 8 box 9. About 8 forms with D 6 cavity in which is placed a porous permeable wall 10, the Central camera (K) 11 and peripheral To 12. Central To 11 filled with liquid dye 13, and the peripheral 12 is in communication with the interscapular channels 14 of the wheel 4 through holes 15 in D 6. The partition 10 is installed in 12 between window 8 and 9 On holes 15 D 6. In 11 posted by porous insert 16 adjacent to the porous permeable partition 10 in the coupling zone 11 and 12. Porous permeable partition 10 is in the mode of the capillary pump and provides a constant flow and concentration of dye 13 in the coated liquid. 2 Il.

The invention relates to the experimental equipment used to study the hydrodynamics of the flow in the working wheels of hydraulic machines by visualizing in neither is abuse on the shaft of the impeller with vanes, leading and transparent coating disks adjacent to the master drive shell with window, separated by permeable partition into two chambers, one of which is placed a porous insert, in the pores of which contain a dye soluble in the fluid and the other chamber is in communication with the interscapular channels through the holes in the master disk (ed. St. USSR N 1564504, CL G 01 M 10/00, 1988).

The disadvantage of this hydraulic machines is the reduction over time of the concentration of the dye in the dyed fluid.

The purpose of the invention is the improvement of the uniformity of the concentration of dye in the fluid.

This objective is achieved in that the permeable partition wall made of porous material and is placed in the cavity peripheral chamber, and the liquid dye and the porous insert is placed in the Central chamber, and permeable partition is adjacent to the porous insert in the coupling zone of the cameras.

Proposed disposition of elements of hydraulic machines, and performing the permeable walls of the porous material provides a uniform flow of dye through the porous insert and a permeable medium that performs the function ketsa pumped liquid.

In Fig. 1 shows a longitudinal section of the hydraulic machine; Fig. 2 - section a-a in Fig. 1.

Model of hydraulic machines includes a housing 1 with a transparent cover 2, accommodated in the housing 1 on the shaft 3 impeller 4 with the blades 5, the lead 6 and the transparent coating 7 discs adjacent to the master drive 6 shell 8, provided with a window 9 and forming with the leading 6 disc cavity in which is placed a porous permeable wall 10, the Central chamber 11 and the peripheral chamber 12. This Central chamber 11 filled with liquid dye 13, and the peripheral chamber 12 is in communication with the interscapular channels 14 of the impeller 4 through holes 15 in the master disk 6. The partition 10 is installed in the peripheral chamber 12 between the window 9 of the shell 8 and the holes 15 of the master drive 6. In the Central chamber 11 posted by porous insert 16 adjacent to the porous permeable partition 10 in the coupling zone of the cameras 11 and 12.

Model of hydraulic machines is as follows.

The pumped fluid enters the impeller 4, passes through the interscapular channels 14 and fed into the discharge region. Part of the pumped liquid enters the gap between the housing 1 and the impeller 4 and through the window 9 of the shell 8 paradiese washer surface of the latter is painted, dissolving the dye 13 contained in the pores of the surface layer of the partition 10. The thus prepared liquid exits through the holes 15 in the master disk 6 as clearly distinguished on the background of the main flow of the fluid streams and visualizes the trajectory of the line current, fixed photoconverters through the transparent covering disc 7 and the cover 2 of the housing 1. In the modeling process as dissolution of the dye 13 porous insert 16 absorbs the dye 13 contained in the chamber 11, and its capillaries transports it into the porous permeable medium 10. In turn, the capillary walls 10 take dye 13 in the surface layer of the specified partition in the area of its flow of pumped fluid. Thus, the porous insert 16 and the porous permeable partition 10, the operating mode of the capillary pump, provide a continuous flow and concentration of dye 13 in the coated liquid.

The use of porous elements (inserts 16 and permeable walls 10, operating in the mode of the capillary pump, allows the release chamber 11 from a porous material to increase her amount of dye and prolong the time which eliminates the need for preliminary impregnation of the porous material of the dye. Improving the efficiency of the color imaging fluid at small pressures.

MODEL of hydraulic machines, comprising a housing with a transparent cover placed in the housing on the shaft of the impeller with vanes, the leading and transparent coating disks and adjacent to the master drive shell with window, forming with leading disk cavity communicated with interscapular channels wheels through the holes in the master disk and comprising a permeable medium located in the cavity of the shell between the box and the holes of the master drive, and Central and peripheral cameras, one of which is placed the liquid dye and the porous insert, characterized in that, with the aim of improving the uniformity of the concentration of dye in the fluid, the permeable partition wall made of porous material and is placed in the cavity peripheral chamber, and the liquid dye and the porous insert is placed in the Central chamber, and permeable partition is adjacent to the porous insert in the coupling zone cameras.

 

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