SU1665243A1 - Apparatus for stimulating hydroengineering structure water conduit configuration - Google Patents

Abstract

The invention relates to hydraulic engineering, in particular to the study of the hydraulic flow of water around the walls of various conduits. The purpose of the invention is to simplify operation and accelerate the simulation. The device comprises a rigid body 1 of transparent material with inlet 2 and outlet 3 holes and flow forming walls 4 of flexible transparent material with compensating holes 14 communicating flow path 15 with compensating cavities 6. Walls 4 are attached to walls 5 of body 1 by adjustable supports made in the form of screws 9, the shanks of which are mounted in the holes of the clips 7 with the possibility of axial transverse movement and rotation. By adjusting the length of the screws installed in the threaded holes of the bosses 11, you can change the configuration of the walls 4 and observe through the walls 5 with the help of auxiliary means (paint, dark threads, tapes, etc.) introduced into the water flow, flowing around the flow of the walls 4. 2 silt

Description

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(21) 4620207/15 (22) 12/15/88 (46) 07.23.91. Bull number 27

(71) Research Sector of the All-Union Design and Survey Institute S.Ya, Beetle

(72) B.A. Bal (53) 627.83.001.57 (088.8)

(56) USSR Author's Certificate No. 608076, cl. G 01 M 10/00, 1976.

USSR Author's Certificate No. 1518434, cl. G 01 M 10/00. 02/18/88.

(54) DEVICE FOR MODELING THE FORM OF WATER SUPPLIES OF HYDROTECHNICAL CONSTRUCTIONS

(57) The invention relates to hydraulic engineering, in particular to the study of the hydraulic flow of water around the walls of various conduits. The purpose of the invention is to simplify

operation and acceleration of the simulation. The device comprises a rigid body 1 of transparent material with an inlet 2 and an outlet 3 and holes and flow forming walls 4 of flexible transparent material with compensating holes 14, communicating flow path 15 with compensating cavities 6. Walls 4 are attached to walls 5 of housing 1 adjustable supports made in the form of screws 9, the shanks of which are installed in the holes of the brackets 7 with the possibility of axial transverse movement and rotation. Adjusting the length of the screws installed in the threaded holes of the bosses 11 can be measured n be the configuration of walls 4 and observed through the wall 5 by means of auxiliary means (paint, dark strands, ribbons, etc..) introduced into the water stream flowing around the walls of the flow 4. 2-yl.

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The invention relates to hydraulic engineering, in particular to the study of the hydraulic flow of water around the walls of various conduits.

The purpose of the invention is to simplify operation and accelerate the simulation.

FIG. 1 shows the proposed device, a longitudinal section; in fig. 2 — node I in FIG. 1 (walls not shown).

The device comprises a rigid hollow body 1 of transparent material with inlet 2 and outlet 3 holes and a water flow former installed in case 1, made in the form of two guide walls 4 of elastic transparent material installed opposite the walls 5 of case 1 to form with them compensating cavities 6, and brackets 7 with holes 8 attached to walls 4 on the side of walls 5 of housing 1. Walls 4 have adjustable supports made in the form of screws 9 with shanks 10 mounted in threaded holes made in bob 11 shackles 5. The shanks 10 are installed in the holes 8 of the clips 7 with the possibility of longitudinal movement and fixed by washers 12 and cotter pins 13. In the walls 4 from the side of the holes 2 and 3 there are compensating holes 1 on the side of the holes 14. The holes 8 should be large enough or elongated to ensure deformation

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walls4. Position 15 marked the flow path.

To conduct laboratory studies on the choice of the optimal outline of the flow path 15. Or the streamlined surface of the hydraulic engineering component under investigation (not shown in Fig.), A rigid hermetic body 1 is made of transparent material, for example Plexiglas (body material can be almost anything, but transparent, just conditions of the beginning of the experiment will be somewhat different). Then, the interface between the former, i.e. resiliently deformable walls 4. Since the housing 1 is necessary for separating the internal cavity with the test liquid medium under pressure from the external gaseous medium, as well as for receiving the full working pressure of the liquid medium, it must be rigid and not have noticeable deformations, on the results of the experiment. Using screws 9, elastically deformable walls 4 are set at a predetermined position to create the desired shape of the flow under study, which is outlined in advance on the outer (transparent) surface of the housing. The flow under study passes through the flow path 15 between the elastically deformed walls 4 of the former inside the transparent rigid body. At the same time through the through channels 14, made in the walls 4 of the former on the side of the inlet 2 and outlet 3, water Iodine enters the compensating cavities 6 by pressure, completely removing static pressure from the resiliently deforming walls 4 (static compensation). Such static pressure compensation allows the use of walls 4 with sufficient flexibility, resilience and

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transparency, preserving shape without distortion during the whole experiment. Making the housing 1 and the walls 4 transparent allows visual observation of the test flow, using auxiliary means (paint, dark threads, tapes, etc.) to reveal the separation and turbulence zones and by manipulating screws 9 (i.e. adjustable supports) to eliminate undesirable phenomena, thereby determining the best option for a streamlined surface.

Claims (1)

Invention Formula A device for modeling the shape of conduits of hydraulic structures, comprising a rectangular rigid hollow body with inlet and outlet holes and a water flow former disposed in the housing with adjustable supports made in the form of screws mounted in the walls of the housing and connected by shanks to the water flow former, characterized by that, in order to simplify the operation and accelerate the simulation, the water flow former is made in the form of two guiding walls made of an elastic material, installed apres against case walls with the formation of compensating cavities with them, and brackets with openings attached to the guiding walls from the side of the housing walls, the housing is made in the form of a pipe, the housing walls are made with cutting outlets in which screws are installed, the shanks of the screws being installed in the holes of the brackets with the possibility of rotor movement, in the guide walls from the inlet and outlet holes the bodies are made through compensating holes, and the body and guide walls are made of a transparent material.