SU1355886A1 - Model hydraulic machine - Google Patents

Abstract

The invention makes it possible to increase the life of the hydroshaped in the simulation mode by increasing the volume of the dye container. Through holes 10, mounted in the disk 8, the container 3 with interscapular channels 9 communicates. The housing 1 is provided with radial blades 13 mounted behind the disk 11. Using the result of the process of restoring static pressure c, organized in the gap between the casing and the disk 1 1. combination with the perforation of the disk 11 allows to increase the axial clearance between the disks 8 and 11, i.e. volume of dye container. The installation of partitions 12 provides equal opportunity for visualization of all zones of the investigated cavities by eliminating the undesirable redistribution of the dye between the areas of the interscapular channels studied. 1 silt, s g / /. // j

Description

The invention relates to hydraulic machine building and can be used in experimental studies of hydraulic machines.

The purpose of the invention is to increase the service life of the hydraulic machine in the simulation mode by increasing the volume of the container.

The drawing shows a model hydraulic machine, a longitudinal section.

The model hydraulic machine includes a housing 1 with a transparent lid 2, a container 3 with a dye, including granules 4 soluble in the pumped liquid, and an impeller 6 with blades, a covering 7 and a driving 8 disks bounding the blade between HBte and impeller mounted on the shaft 5 in the housing 1 channels 9. The covering disk 7 is made transparent, and the driving disk 8 is provided with through holes 10, which communicate container 3 with inter-blade channels 9, while container 3

formed by a drive disk 8 and an additional 25, as a result of which, an equal disk 11 is provided, having a shoulder adjacent to the periphery of the drive disk 8, partitions 12 are installed between the lead 8 and an additional 11 disks. An additional disk 11 is perforated, the partitions 12 between the lead 8 and an additional 11 discs are made impenetrable, and the housing 1 is provided with radial blades 13J mounted behind the disc 11 of wheel 6.

thirty

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The ability to visualize all the zones of the cavities under investigation is associated with the simulation time.

The dye entering the interscapular channels 9 of the wheel 6 is contrasted against the background of the main flow of the pumped liquid, forming a path of movement — streamlines 5, which can be visually observed and fixed by the photo-cinema apparatus through the transparent covering disk 7 and the cover 2 of the housing 1.

The model hydraulic machine works in the following way.

The pumped liquid enters the impeller 6, passes through the blade channels 9 and is fed into the injection area. A part of the pumped liquid from the exit of the impeller 6 enters the gap to the blades 13, while the liquid has a twist. In the zone of action of the blades 13 fixedly mounted on the wall of the housing 1, intense rotational deceleration of the fluid movement occurs, accompanied by an increase in the static pressure in the gap. The pressure in the gap exceeds the pressure in the mezzanine channels 9 of the wheel 6, as a result of which the liquid through perforations in the additional disk 11 enters the container 3 along the entire disk 11, partially dissolves the granules A, which are part of the dye, stains and through holes 10

in the drive disk 8 is supplied to the interscapular channels 9 of the wheel 6. A stationary discharge flow of the colored liquid is established in the interscapular channels 9 of the impeller 6. At the same time, the axial clearance between the disks 8 and 11, which determines the volume of the container 3, can be almost any value Since the degree of static pressure recovery provides the flow of fluid into the container 3 through perforations in the disk 1 1 and further through the holes 10 in the 5 drive disk 8 into the interscapular channels of the wheel 6.

Impermeable partitions 12 between the disks 8 and 11 prevent the colored fluid from the center to the periphery from being discarded from the center to the periphery, thereby eliminating the unexpected redistribution of the dye between the zones of the inter-blade channels of the wheel 6 along the radius of the latter,

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5, therefore, is provided equal to

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The ability to visualize all the zones of the cavities under investigation is associated with the simulation time.

The dye entering the interscapular channels 9 of the wheel 6 is contrasted against the background of the main flow of the pumped liquid, forming a path of movement — streamlines 5, which can be visually observed and fixed by the photo-cinema apparatus through the transparent covering disk 7 and the cover 2 of the housing 1.

Thus, using the result of the static pressure recovery process organized in the gap between the housing 1 and the disk 11 in combination with the perforation of the additional disk 11 allows to increase the axial clearance between the disks 8 and 11, i.e. the volume of the container 3 with the dye and, consequently, the service life of the hydraulic machine in the simulation mode. The installation of the Impenetrable partition wall 1.2 between the discs 8 and 11 enhances the positive effect, since it eliminates the undesirable redistribution of the dye between the areas of the interscapular channels under study.

Claims (1)

Invention Formula Model hydraulic machine, containing a housing with a transparent collar, a container with a dye, including granules soluble in the pumped liquid, and an impeller placed in the housing on the shaft with blades, cover and drive discs that limit the interscale channels, and the cover disc is made transparent, and the master is equipped with end-to-end openings communicating the container with the interscapular channels, the container being formed by the driving disk and the additional Sh-Sh case is equipped with a radial blade blade having a collar, Pointing to the periphery of the drive disk. MI installed behind the perforated wheel disc. and between the master and additional disks, partitions are installed, so that, in order to increase the service life in the simulation mode by increasing the volume of the container, the additional disk is perforated, the partitions between the master and additional disks are made impenetrable. and the body is equipped with a radial blade MI installed behind the perforated wheel disc.