Electric isolating valve

Abstract

The invention provides an electric isolating valve, aiming at the problems of the traditional isolating valve that air does not flow smoothly in a wind tunnel contraction section, the sealing effect is poor and a gate is hard to open and close. The electric isolating valve is characterized in that a valve seat (2) is provided with an inflatable sealing ring (8) and the inflatable sealing ring (8) is internally provided with a cavity (9) communicated with an air tap outside; after being inflated with air, the inflatable sealing ring (8) is expended and closely clings onto the sealing face of a gate (3); after being deflated, the inflatable sealing ring (8) is sunken and departs from the sealing face of the gate (3). The electronic isolating valve has a good sealing effect; the gate can be opened and closed with a small force; moreover, the electric isolating valve has high repeated positioning accuracy; when the gate is opened completely, the gate is positioned stably, the airflow direction can be controlled accurately, the model flow field of airflow is slightly different from the actual flow field of airflow, and test data is closer to actual data.

Description

technical field [0001] The invention relates to a device for controlling the opening or closing of an airflow channel of a contraction section in a wind tunnel test device, in particular to an electric isolation door. Background technique [0002] The wind tunnel experiment refers to placing aircraft or other object models in the wind tunnel to study the gas flow and its interaction with the model. According to the principle of relativity of motion, the aircraft or other object models or objects are fixed in the artificial environment on the ground. Create airflow and obtain test data to understand the aerodynamic properties of an actual aircraft or other object. Since the wind tunnel experiment is a simulation experiment, it cannot be completely accurate. During the wind tunnel experiment, the air moves and the model does not move. When performing model experiments, the similarity between the model flow field and the real flow field should be ensured. At present, the isol...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of unsmooth airflow and poor sealing effect in the contraction section of the existing isolation door wind tunnel, as well as laborious opening and closing of the shutter, the invention provides an electric isolation door, which has good sealing effect and is easy to open and close the shutter. Labor-saving, at the same time, the electric isolation door has high repeat positioning accuracy. When the gate is fully opened, the gate is positioned stably, and the airflow direction is controlled accurately. The deviation between the model flow field of the airflow and the real flow field of the airflow is small, and the test data is closer to the real data.

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