JPH0672836B2 - Specimen dynamic pressure tester - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for testing dynamic wind pressure of test pieces such as curtain walls and glass panels. More specifically, it produces not only static pressure but also dynamic pressure, wind pressure resistance, airtightness, watertightness test, etc. The present invention relates to a dynamic air pressure test device and a tightness test device.

[0002]

2. Description of the Related Art Conventionally, in a wind pressure resistance, airtightness, and watertightness tester for a test piece such as a curtain wall, a wind pressure and airtight chamber for loading a static pressure corresponding to a dynamic pressure in a strong wind on the test piece has been used. For example, it is disclosed in Japanese Utility Model Laid-Open No. 2-9851. In addition, as a static pressure loading device that adjusts the dynamic air pressure by adjusting mutual inflow and outflow with a wind pressure control valve using two pressurizing blowers and suction blowers, the actual application according to the applicant's prior application It has already been developed in Japanese Patent Application No. 3-22307.

Recently, the outer walls of high-rise buildings are becoming larger and larger. Therefore, the watertight performance of the curtain wall is required to be high. Therefore, the structure of each panel of the curtain wall has become very complicated, for example, adopting a dew condensation, dew prevention, or the same wind pressure structure that makes the pressure the same as the inside.

On the other hand, when the building is actually exposed to the wind, it does not hit the curtain wall or the window vertically, but the wind passes by licking the surface from an oblique direction. That is, a large dynamic pressure is generated on the surface of the curtain wall at the same time as the static pressure, and rainwater may seep into the room due to the surface flow that cannot be reproduced by the conventional static pressure type chamber.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned situation, the present invention is to solve the problems that a pressure difference from the pressure inside the pressure chamber is generated and at the same time the surface of the specimen such as a curtain wall is free. The point is to provide a dynamic wind pressure test device for a specimen that can reproduce an actual typhoon by sending wind from different directions.

[0006]

In order to solve the above-mentioned problems, the present invention provides a pressure chamber having a mounting opening for sealingly mounting one surface of a specimen, and a specimen mounted in the pressure chamber. A static pressure loading device capable of adjusting pressure, which is provided with a blower port on the facing surface, and a side face of the pressure chamber, in which a blow-out port and a suction port are formed to face each other in the vicinity of the surface of the specimen mounted in the chamber, A dynamic wind pressure test device for a test object was constructed by connecting a blow-out port and a suction port outside the pressure chamber with an airtight duct and a dynamic pressure loading device provided with an axial flow blower at a proper position of the airtight duct.

Further, in order to test the water tightness of the test piece, a water spray nozzle is arranged in the pressure chamber.

The airtight duct of the dynamic pressure loading device is provided so as to bypass the side surface or the upper surface or the lower surface of the pressure chamber, and preferably the side surface is bypassed.

[0009]

The dynamic wind pressure test apparatus for a test piece of the present invention having the above-mentioned contents provides a continuous airtight space by a pressure chamber in which a test piece is hermetically mounted in a mounting opening and an airtight duct that bypasses and connects the outside. By forming and then supplying or exhausting air from the static pressure loading device through the ventilation port, the airtight space is pressurized or depressurized to a uniform pressure, and a differential pressure is generated between the inside and outside of the specimen, thus While applying static pressure,
By operating the dynamic pressure loading device, that is, by operating the axial flow blower with the air of a predetermined pressure in the airtight space, the airflow flowing from the airtight duct to the air outlet, the pressure chamber, the suction port, and the airtight duct is generated. The surface flow is formed on the surface of the specimen and the dynamic pressure is applied. The air outlet and the suction inlet are arranged on the side surface of the pressure chamber and near the surface of the specimen, so that the air flow by the axial blower is concentrated and generated near the surface of the specimen. Here, what is important is that the dynamic pressure loading device does not affect the static pressure in the pressure chamber.

Further, the static pressure and the dynamic pressure are applied to the test piece, and at the same time, the test piece is sprayed from the water spray nozzle arranged in the pressure chamber, so that the wind pressure resistance, airtightness and watertightness test can be carried out at the same time.

Since the axial flow blower is generally heavy and generates vibrations, the axial flow blower is installed independently of the pressure chamber, and the airtight duct connecting the pressure chamber and the axial flow blower is It is preferable to dispose on the side of the pressure chamber. However, if sufficient strength can be obtained for the installation stand of the axial flow blower, the airtight duct can be connected by bypassing the upper surface or the lower surface of the pressure chamber, and in this case, the installation area, that is, the flat space, Space saving can be achieved.

[0012]

The present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings. 1 to 3 are simplified diagrams showing a typical embodiment of the dynamic wind pressure test apparatus of the present invention, in which W is a panel-shaped specimen such as a curtain wall or a glass panel,
Reference numeral 1 is a pressure chamber, 2 is a static pressure loading device, and 3 is a dynamic pressure loading device.

In the present embodiment, the pressure chamber 1 has a box-like outer shape with a substantially U-shaped cross section in which each surface except the mounting opening 4 for mounting the sample W is surrounded by wall surfaces 5 in an airtight state. Then, a flange 6 is formed around the mounting opening 4, and a joint material 7 is interposed on the outer surface of the flange 6 to press the peripheral edge of the sample W with a fixture 8, such as a hydraulic clamp ,.
The sample W can be mounted in an airtight state. In addition, inside the pressure chamber 1, a sprinkling nozzle 9 is provided so that rainwater can be uniformly sprayed toward the sample W.
Are arranged.

On the wall surface 5 facing the sample W mounted in the pressure chamber 1, there is provided a blower port 10 for connecting to the static pressure loading device 2, and the sample W has left and right side surfaces. An air outlet 11 and a suction port 12 for connecting to the dynamic pressure loading device 3 are opened in the vicinity of the surface of the above, and the others are all airtight.

The static pressure loading device 2 includes two pressure blowers 13 and a suction blower 14 having substantially the same intake and exhaust performances, and a discharge pipe 15 of the pressure blower 13 and an exhaust pipe 16 of the suction blower 14. Is connected to a wind pressure adjusting tank 18 via a control valve 17, and an output pipe 19 of the wind pressure adjusting tank 18 is connected to the blower port 10 so as to communicate therewith. The control valve
The adjustment of 17 is performed by measuring the static pressure in the pressure chamber 1 and feeding it back to the controller.
The pressure control chamber described in Japanese Patent Application No. 3-22307 may be used in which the control valve 17 and the wind pressure control tank 18 are integrated.

The dynamic pressure loading device 3 includes an airtight duct 20 which connects the blow-out port 11 and the suction port 12 opened in the pressure chamber 1 to the outside of the pressure chamber 1, that is, in this embodiment, bypassing the side surface. It is composed of an axial flow blower 21 interposed at a proper position of the airtight duct 20. By operating the axial flow blower 21, air is blown into the pressure chamber 1 from the air outlet 11 through the airtight duct 20, a surface layer flow is generated on the surface of the sample W, and the air is sucked out from the suction port 12 and passed through the airtight duct 20 to pass through the shaft. It produces a circulating wind flow to the flow blower 21. On this occasion,
By reversing the rotation of the axial flow blower 21, the surface layer flow flowing on the surface of the sample W can be reversed.

The airtight duct 20 has such a shape and structure as to reduce wind resistance as much as possible, and a plurality of fins 22, ... Further, the blow-out portion 23 and the suction portion 24 are formed in a shape that spreads in a trumpet shape toward the blow-out port 11 and the suction port 12, respectively, and the blow-out portion 23 is formed in a nozzle shape. Here, the fins 22, ... Provided in the blow-out portion 23 are oriented at different angles so that the wind flow uniformly spreads over the entire surface of the sample W. Along with that, the outlet 11 and the inlet 12 have a vertically long hole shape. Furthermore, a movable fin 25 may be provided near the outlet 11 so that the direction of the flow of the blown air can be changed. Incidentally, when the axial flow blower 21 is reversed in the normal and reverse directions, the outlet 11 becomes the inlet and the inlet 12 becomes the outlet, so it is desirable that the outlet 23 and the inlet 24 have the same shape. . Further, it is also preferable to provide a wire mesh at the outlet 11 so that the airflow blown out from the outlet 11 is uniformly spread.

The axial flow blower 21 has a structure in which the rotation axis of the propeller is set in the wind flow direction, and is capable of generating substantially the same amount of air flow when it is operated by reversing the forward and reverse directions. The change in the air volume can be made by changing the rotation speed of the blower. Here, the use of the axial flow blower 21 which can be operated by reversing the normal and reverse directions is due to the requirement that the surface flow in different directions needs to be generated because the structure of the sample W is not necessarily symmetrical.

Here, the axial flow blower of the dynamic pressure loading device 3
If the static pressure inside the pressure chamber 1 changes due to the air volume of 21, the static pressure cannot be controlled, so it is necessary to completely seal the air tight duct 20 so that there is no leakage of the wind. By doing so, the dynamic pressure loading device 3 causes a gas having an atmospheric pressure equal to the pressure in the pressure chamber 1 to drift,
That is, a pressure air flow is generated to generate a surface flow along the surface of the sample W.

FIG. 4 shows another embodiment, which has the same structure as the structure shown in the above-mentioned embodiment, except that the upper and lower side surfaces of the pressure chamber 1 are the surface of the sample W. An air outlet 11 and a suction port 12 for connecting to the dynamic pressure loading device 3 are provided near the lower side surface and the upper side surface, respectively. That is, the surface layer flow is blown from the bottom to the top on the surface of the specimen W so that it is possible to reproduce a natural phenomenon such as a typhoon. It should be noted that this example is the same as the state in which the test piece W is rotated by 90 ° and attached in the above-described examples shown in FIGS. 1 to 3, ignoring the effect of gravity.

FIG. 5 shows another embodiment of the dynamic pressure loading device 3. That is, the outlets 1 are provided on both sides of the pressure chamber 1.
1, 11 are formed to face each other, and two independent suction ports 12, 12 are provided near the center of the front surface facing the test piece W, and a pair of air outlets 11 and a suction port 12 on both sides are provided on the side surface of the pressure chamber 1. Is connected by an airtight duct 20 circumventing, and an axial blower 21 is provided at an appropriate position of each airtight duct 20, 20.
A flexible curtain duct 26 is extended from both the suction ports 12 and 12 toward the inside of the pressure chamber 1, and the end of the curtain duct 26 is set in the vicinity of the sample W.
The wind flow in this embodiment forms a surface layer flow directed from the air outlets 11 on both sides toward the center, and then from the center to the curtain duct.
Flows through airtight duct 20 through 26.

FIG. 6 shows still another embodiment of the dynamic pressure loading device 3. That is, the suction ports 12 and 12 are formed on both sides of the pressure chamber 1 so as to face each other, and one air outlet 11 is formed in the center of the front surface facing the sample W, and the both suction ports 12 and 12 and the air outlets are formed.
11 are connected by an airtight duct 20, and the outlet 11
An axial blower 21 is installed inside. Further, inclined fins 27 are provided at the outlet 11 so that the airflow is divided from the center of the sample W to both sides. The airflow in this embodiment is branched from the central air outlet 11 to both sides to form a surface layer flow, and flows from the suction ports 12 and 12 on both sides to the airtight duct 20. Airtight duct 20 branched from the axial blower 21 on both sides
Air flow control valves 28, 28 are provided in the interior, respectively, so that the flow rate of the surface flow on both sides can be changed.

FIG. 7 shows the airtight duct 20 of the dynamic pressure loading device 3.
Is provided so as to bypass the upper surface of the pressure chamber 1. In this case, the axial blower 21 is the pressure chamber 1
Placed on the upper surface of or above the floor where the pressure chamber 1 is installed.

In FIG. 8, the airtight duct 20 of the dynamic pressure loading device 3 is divided into upper and lower parts, and the upper surface and the lower surface of the pressure chamber 1 are circumvented to be connected to the same outlet 11 and inlet 12 in communication. . In this case, the upper and lower airtight ducts 20, 20
Axial flow blowers 21, 21 are installed in appropriate places. here,
The lower axial flow blower 21 can be installed on a floor below the floor where the pressure chamber 1 is installed. Then, by operating them, a surface layer flow is generated in the upper half of the sample W by the upper axial flow blower 21, and the lower axial flow blower is generated.
At 21, the surface flow is generated in the lower half of the specimen W.
At this time, the upper and lower axial flow blowers 21, 21 can be rotated in the same direction to generate the surface layer flow in the same direction on the sample W, and of course, the upper and lower axial flow blowers 21, 21 can be rotated in opposite directions. To generate a surface flow to the right in the drawing in the upper half of the test piece W and a surface flow to the left in the lower half to generate a spiral surface flow at the boundary. Is possible.

[0025]

EFFECT OF THE INVENTION According to the dynamic wind pressure test apparatus for a specimen of the present invention as described above, a pressure chamber having a mounting opening for sealingly mounting the specimen on one surface, and a specimen mounted on the pressure chamber are provided. A static pressure loading device capable of adjusting the pressure, in which a blower port is provided on the surface facing the sample, and a blower port and a suction port are formed opposite to each other on the side surface of the pressure chamber near the surface of the sample mounted in the chamber. , The air outlet and the suction port are connected to each other outside the pressure chamber by an airtight duct, and an axial flow blower is provided at an appropriate position of the airtight duct, so that a test piece is attached to the mounting opening. A continuous airtight space is formed by the airtight duct that connects the pressure chamber that is hermetically sealed and bypasses the outside, and by supplying or exhausting air from the static pressure loading device through the air outlet, the inside of the airtight space is The pressure is increased or decreased to such a pressure, a differential pressure is generated inside and outside the specimen, and static pressure is loaded on the specimen at the same time, and at the same time, the dynamic pressure loading device is activated, that is, air at a predetermined pressure in the hermetic space is applied. By operating the axial blower, a wind flow that flows from the airtight duct to the air outlet, the pressure chamber, the suction port, and the airtight duct is generated, and thus the surface layer flow is formed on the surface of the specimen, and the static pressure in the pressure chamber is generated. The dynamic pressure can be loaded without affecting the temperature, and the weather resistance and airtightness test of the specimen can be performed by reproducing the actual meteorological phenomenon.

Further, by disposing the air outlet and the air inlet on the side surface of the pressure chamber and in the vicinity of the surface of the specimen,
It is possible to efficiently generate a surface layer flow by concentrating the wind flow by the axial blower near the surface of the specimen.

Further, the static pressure and the dynamic pressure are applied to the test piece, and at the same time, the water spray nozzle is placed in the pressure chamber to spray the test piece on the test piece, so that a real typhoon can be reproduced. And the water tightness test can be performed simultaneously.

[Brief description of drawings]

FIG. 1 is a simplified cross-sectional plan view showing the outline of a dynamic wind pressure test apparatus for a test piece of the present invention.

[FIG. 2] Similarly, an enlarged simplified cross-sectional plan view of the main part

FIG. 3 is a simplified vertical sectional front view of FIG.

FIG. 4 is a simplified vertical sectional front view showing another embodiment of the dynamic wind pressure test apparatus.

FIG. 5 is a simplified cross-sectional plan view showing another embodiment of the dynamic pressure loading device.

FIG. 6 is a simplified cross-sectional plan view showing still another embodiment of the dynamic pressure loading device.

FIG. 7 is a simplified vertical sectional front view showing another arrangement example of the airtight duct.

FIG. 8 is a simplified vertical sectional front view showing still another arrangement example of the airtight duct.

[Explanation of symbols]

 W Specimen 1 Pressure chamber 2 Static pressure loading device 3 Dynamic pressure loading device 4 Mounting opening 5 Wall surface 6 Flange 7 Joint material 8 Fixing device 9 Sprinkling nozzle 10 Blower port 11 Blowout port 12 Suction port 13 Pressurizing blower 14 Gravity blower 15 Discharge pipe 16 Exhaust pipe 17 Control valve 18 Air pressure adjustment tank 19 Output pipe 20 Airtight duct 21 Axial blower 22 Fin 23 Blowing part 24 Suction part 25 Movable fin 26 Curtain duct 27 Inclined fin 28 Air flow control valve

Claims (5)

[Claims] 1. A pressure-adjustable static pressure load having a pressure chamber having a mounting opening for sealingly mounting a test piece on one surface, and a blower opening provided on a surface facing the test piece mounted in the pressure chamber. A device and a side surface of the pressure chamber, a blow-out port and a suction port are formed opposite to each other in the vicinity of the surface of the specimen mounted in the chamber, and the blow-out port and the suction port are connected to each other by an airtight duct outside the pressure chamber. And a dynamic wind pressure test device for a specimen, comprising: a dynamic pressure loading device provided with an axial flow blower at an appropriate position of the airtight duct. 2. The dynamic wind pressure testing device for a specimen according to claim 1, wherein a watering nozzle is arranged in the pressure chamber. 3. The dynamic wind pressure test device for a specimen according to claim 1, wherein the airtight duct of the dynamic pressure loading device is provided so as to bypass the side surface of the pressure chamber. 4. The dynamic wind pressure testing device for a test piece according to claim 1, wherein the airtight duct of the dynamic pressure loading device is provided so as to bypass the upper surface of the pressure chamber. 5. The dynamic wind pressure test device for a specimen according to claim 1, wherein the airtight duct of the dynamic pressure loading device is provided so as to bypass the lower surface of the pressure chamber.