SU1629775A1 - Hydraulic machine model - Google Patents

Abstract

The invention is intended for laboriousness of testing and research of impellers of blade machines by visualizing the flow in the flow part of the wheel. be container. It is simpler, and the dye is more fully used. During the tests, the pumped liquid passes through the permeable container 3, dissolves the 4 dye granules and in the form of colored jets, passes the perforated disk 13, is injected through the channels 10 into the interstitched channels. The jets are fixed by the cine-photo equipment through the transparent rolling disc 8 and the cover 2. 2 c.p. f-ly, 2-yl. with SS (L o N3 CO | 1 ate

Description

ten

15

20

The invention relates to hydraulic machine building, in particular to experimental equipment designed to study blade machines by visualizing the flow in the flow part of the machine.

The purpose of the invention is to reduce the labor intensity of the test with several working wheels.

FIG. Figure 1 shows a model hydraulic assembly with a contact mechanical seal; Fig 2 is the same with a labyrinth screw seal.

 The model hydraulic machine comprises a housing 1 with a transparent lid 2S, a container 3 with a dye, including granules 4 that are soluble in the pumped liquid, and an impeller 6 placed on the shaft 5 with blades 79 covering and driving disks 8 and 9, limiting the inter-blade channels, and the covering disk 8 is made transparent, and in the master disk 9, through channels 10, 25 are made, the inputs of which are connected to the container 3, and the outputs - to the interscapular channels 0 The container 3 is placed on the outer side of the leading disk 9 and is made permeable in zone 11 of the gyudvod e ti on per.iferni in the area, | 2 liquid discharge. The container 3 is fixedly mounted on the housing, 1, the hydraulic machine is provided with a perforated disk 13 placed between the container 3 and the driving disk 9 and fixed to the shaft 5, having a shoulder 14 adjacent to the driving disk 9, and the container 3 is provided with a sealing unit located in the gap between container 3 and perforated disc 130

The sealing unit can be made in the form of i55 impedler blades located on the periphery of the perforated disk 13, and contact face seal 16 "

In relation to high-speed blade machines, the sealing assembly can be made in the form of a labyrinthic screw seal consisting of a screw 17 and a sleeve 18, the screw being made on the peripheral surface of the container 3, and the sleeve is fixed on the periphery of the perforated disc 13 "

Model hydraulic machine works as follows.

The pumped liquid enters the impeller 6, passes through

35

40

45

50

55

0

five

0

five

0

five

0

five

0

five

blade channels and is fed into the injection area. Part of the pumped liquid from the output of the working cat of the forest 6 enters the container 3 through its permeable section located in the zone 11 for supplying the liquid to the container 3. Partially the solution of the granule 4 and staining with the pumped liquid sequentially passing through the permeable section located in the zone 12 removing the liquid from the container 3, and the perforation of the disk 13, is supplied to the outer side of the driving disk 9 of the impeller under study 6 "Pass through the through channels 10, tinted jets, into the interscapular channels working The 6S wheels contrast with the main flow of the pumped liquid to form movement paths — streamlines that can be visually observed and fixed by the photo-cinema equipment through the transparent cover disk 8 and the cover 2 of the housing 10. The sealing unit with which the disk 13 separates the cavity from the hydraulic machine. colored and unpainted liquid.

Performing a hydraulic machine with a sealing unit in the form of a contact seal 16 and impeller blades 15 on the disk 13 () makes it possible to obtain densely colored streams, since through the contact seal there are practically no leaks of unpainted liquid from the high pressure area to the zone 12 blades 15, throwing fluid to the periphery of the impeller, create additional hydro-resistance to the flow of fluid through the sealing unit.

The implementation of a hydraulic machine with compacting unit in the form of a labyrinth screw seal, consisting of screw 17 and sleeve 18 (FIG. 2), can significantly increase the reliability and service life of the hydraulic machine due to the absence of contact friction pairs in it. When the hydraulic machine is working with such a seal, in the removal zone 12, the colored fluid leaving the 3S container with uncolored liquid diluted through leaking through the labyrinth screw seal is diluted. This type of sealing unit is effective when using highly concentrated dyes that are diluted water in the ratio of 1: 100C

The advantage of the invention is that the design of the impellers is simplified due to the absence of containers in them, the time spent on testing several impellers is reduced, the loss of a granulated dye is reduced, as the container remains unchanged and the dye remains from the previous test are used to visualize the flow in the next impeller, synchronization of the flow visualization process through all through channels 10 in the driving disk 9 of the wheel is ensured; anicheni volume of the container 3. The container 3 may have a volume that enable it after one filling granules provide visualization process in a large number of impellers.

Claims (3)

Invention Formula 1 "Model hydraulic machine, containing a housing with a transparent lid, a container with a dye, including granules soluble in the pumped liquid, and an impeller placed in the housing on the shaft with blades, covering and driving disks, limiting the inter-blade channels, with the covering disk is made transparent, the leading channels are made through the leading ports of which are connected to the container, the outlets are connected to the interscapular channels, and the container is placed on the outer side of the leading disk and made permeable in the fluid supply zone, in the periphery and in the fluid drain zone, which the fact that, in order to reduce the complexity of the test with several impellers, the container is fixedly mounted on the housing, the hydraulic machine is provided with a perforated positioned between the container and the drive disk and fixed to the shaft disk, having a collar adjacent to the master disk, and the container is equipped with a sealing unit located in the gap between the container and the perforated disk. 2. The hydraulic machine according to claim 1, characterized in that the sealing assembly is made in the form of impeller blades located on the periphery of the perforated disk and the contact mechanical seal. 3. Hydraulic machine according to claim 1, characterized in that the sealing assembly is made in the form of a labyrinth screw seal consisting of a screw and a sleeve, the first of which is made on the peripheral ,,. the surface of the container, and the second is fixed on the periphery of the perforated disk five 0 five 0 Fm.g