JPH0524036Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a surface sealing material for a rotating model rectifier for diffusion wind tunnel testing.

[Conventional technology]

Figure 5 is a plan view showing a rotating topographical model for examining the effects of changes in airflow in a gas diffusion test wind tunnel, and a rectifier to ensure that airflow flows smoothly into and out of this topographical model. To explain the vertical cross-sectional view in FIG. 6, the enlarged view in FIG. 7, and the partially exploded view in FIG. The top surface of the scale 3D topography 17 of the area to be surveyed is larger, and its outer surface 18
has a vertical cylindrical surface, but its upper end has undulations depending on the topography, as shown in Figure 8.

A guide surface 19 is provided parallel to the undulations of the outer circumferential surface 18 of the rotary terrain model 15, and a guide roller 10 is mounted on the guide surface 19.
0, a beam 11 supported by a column 14 that can move up and down
is attached, and the other end of the beam 11 is a flat plate 12 of the wind tunnel.
It is connected to the movable beam 13 that slides above, and these form a rectifier.

However, the outer peripheral surface 18 of the rotating terrain model 15 of the lever
As shown in FIG. 5, the flow straightening device consists of a combination of a guide roller 10, a beam 11, and a movable beam 13 that move up and down according to the ups and downs of the upper end.
A large number of beams 11 and moving beams 13 are provided on both the upstream and downstream sides, and the upper surfaces of these beams 11 and moving beams 13 are coated with a surface sealing material 1 for guiding airflow. The beam 11 moves up and down in accordance with the ups and downs of the upper end of the surface 18, and airflow smoothly flows into and out of the topographical model 15 due to the surface sealing material 1 covering the beam 11.

Therefore, since this surface sealing material 1 is coated on the upper surface of all the beams 11 of the rectifier, the topography 1
It is desirable that it be deformable according to the size of the item. However, if the elasticity of the surface sealing material 1 is too large, the surface pressure of the guide roller 10 and the bending stress of the beam 11 will become excessive, causing damage to these members. Also, if the elasticity is small, the guide roller 10
If the distance between the beams 11 is small, that is, if the topography 17 is close to a flat surface, the surface sealing material 1 will sag and the smooth inflow and outflow of airflow will be inhibited. Therefore, it cannot be said to be ideal.

[Problem that the invention attempts to solve]

The present invention was proposed in view of these circumstances.It has low elongation and bending rigidity, and can be appropriately displaced and deformed in response to the vertical movement of the beam, thereby preventing damage to the guide rollers or the beam. It is an object of the present invention to provide a surface sealing material for a rotating model rectifying device that allows airflow to smoothly flow in and out according to the undulations of a rotating terrain model.

[Means for solving problems]

To this end, the present invention uses metal or synthetic resin in the surface sealing material coated on the upper surface of the vertical movement beam of the rectifier installed on the upstream and downstream sides of the airflow of a cylindrical terrain model that rotates around a vertical axis. A plurality of tongues are formed on each of a plurality of sealing material units made of thin plates having an appropriate width, and cuts and insertions are provided into which the tongues of adjacent sealing material units are inserted;
The present invention is characterized in that each of the adjacent sealing material units is assembled to each other by engagement with the tongue piece by cutting and inserting.

[Effect]

With the above configuration, the elongation and bending rigidity are small, and the beam can be appropriately displaced and deformed according to the vertical movement of the beam.
Furthermore, it is possible to obtain a surface sealing material for a rotating model rectifying device that allows airflow to smoothly flow in and out according to the undulations of a rotating terrain model without damaging guide rollers or beams.

〔Example〕

One embodiment of the surface sealing material of the rotating model rectifying device of the present invention will be explained with reference to the drawings. Fig. 1 is a plan view showing its assembled state, Fig. 2 is a plan view of the sealing material unit, and Fig. 3 is a plan view of the sealing material unit. A cross-sectional view along - in Figure 1, Figure 4 shows the displacement of the assembled surface sealing material,
It is an explanatory view showing a modification point.

In the above figure, the surface sealing material 1 is made of a thin plate of a metal with large elastic deformation such as phosphor bronze, or a synthetic resin with relatively high tensile strength such as hard vinyl chloride or tetrafluoroethylene, and each sealing material unit 1a, 1
The width of b and 1c is approximately twice the pitch of beam 11 as shown in Fig. 1, and the length is approximately the same as beam 11 and moving beam 1.
3 (see Figure 5).

Each sealing material unit 1a, 1b, 1c has a second
As shown in the figure, it includes a plurality of tongues 2, and notches 3 and insertions 4 provided between the tongues 2, symmetrically centering on the mounting hole 5. Therefore, the tongue piece 2 is partially separated from the surface sealing material 1 by two notches 6 and 6' provided perpendicularly to the center line connecting the plurality of mounting holes 5, and the notch 3 is , are provided parallel to the center line with an appropriate spacing between them and the tongue piece 2, and the insert 4 is a strip-shaped thin plate made parallel to the notch 3 and attached at both ends 4'. . Note that the lengths of the notches 3 and the inserts 4 are larger than the width of the tongue piece 2.

However, the assembly of the surface sealing material 1 on the lever is performed in the first step.
As shown in the drawings and FIG.
After inserting each tongue piece 2 into the notch and insertion 4 of the adjacent sealing material unit 1a, 1b, 1c so that it is half pitched, insert the tongue piece 2 into the beam 11 through the mounting hole 5.
Fixed to.

In such a device, the guide roller 10 at the tip of the beam 11 rolls along the topography 17 (FIG. 8).
With respect to the distance and height between adjacent beams 11 that change from time to time according to , Lateral direction (B), Assembly angle (C), Warpage
The displacement and deformation shown in (D) can be taken, and these displacements and deformations are possible with extremely small force.

[Effect of idea]

In short, according to the present invention, the surface sealing material coated on the upper surface of the vertical movement beam of the rectifier installed on the upstream and downstream sides of the airflow of the cylindrical terrain model rotating around the vertical axis is made of metal or synthetic resin. A plurality of tongues are formed in each of a plurality of sealant units made of thin plates of appropriate width, and cuts and insertions are provided into which the tongues of adjacent sealant units are inserted, and each of the adjacent sealant units is By assembling each other through the engagement of the tongue piece, notch, and insertion, the elongation and bending rigidity are small, and it can be appropriately displaced and deformed in response to the vertical movement of the beam, which will prevent damage to the guide rollers and the beam. Airflow flows smoothly according to the undulations of the rotating terrain model,
The present invention is industrially extremely useful because it provides a surface sealing material for a rotary model rectifying device that can be discharged.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the assembled state of the surface sealing material in an embodiment of the surface sealing material of the rotating model rectifying device of the present invention, Fig. 2 is a plan view of the sealing material unit in the same example, and Fig. 3 is the plan view of the sealing material unit in the same embodiment. FIG. 4 is a cross-sectional view taken along the line - in the figure, and is an explanatory view showing how the assembled surface sealing material is displaced and deformed. Fig. 5 is a plan view of a conventional rotating terrain model and a flow straightening device, Fig. 6 is a vertical sectional view taken along - in Fig. 5, Fig. 7 is a partially enlarged view of Fig. 6, and Fig. 8 is a 5 is a partially developed view of the outer peripheral surface of the topographical model in FIG. 5. FIG. DESCRIPTION OF SYMBOLS 1... Surface sealing material, 1a, 1b, 1c... Sealing material unit, 2... Tongue piece, 3... Notch, 4
...Insert, 5...Mounting hole, 6...Notch, 10
... Guide roller, 11 ... Beam, 12 ... Wind tunnel flat plate, 13 ... Moving beam, 14 ... Support column, 15 ...
Terrain model, 16... Vertical axis, 17... Terrain, 18...
... Model outer peripheral surface, 19 ... Guide surface, 20 ... Wind tunnel side wall.

Claims (1)

[Scope of utility model registration request] The surface sealing material coated on the upper surface of the vertical movement beam of the rectifier installed on the upstream and downstream sides of the airflow of the cylindrical terrain model that rotates around the vertical axis is made from a thin plate of metal or synthetic resin of an appropriate width. A plurality of tongues are formed in each of the plurality of sealant units, and a cut and an insert into which the tongue of the adjacent sealant unit is inserted are provided, and each of the adjacent sealant units is connected to the tongue and the notch and the insert. A surface sealing material for a rotating model rectifier, characterized in that they are assembled together by engagement.