A fast switching valve device and switching method for large-diameter wind tunnel applications

Abstract

The invention discloses a fast switch valve device and a switch method for large-diameter wind tunnel applications, belonging to the technical field of wind tunnel experiments, including electrical control components, gas pipelines, one-way valves, multiple solenoid valves, valve core bases, Supporting ribs, springs and movable conical valve core, the base of the valve core is fixed and installed at the entrance of the wind tunnel through the supporting ribs, the base of the valve core is provided with a ring cavity, and the ring cavity is arranged coaxially with the wind tunnel. There is a ventilation hole in the support rib, and the ventilation hole connects the driving pipeline assembly with the ring cavity, and the movable cone valve core is arranged inside the pneumatic actuator assembly, and the movable cone valve core is connected to the bottom of the ring cavity through a spring and Reciprocating and horizontally moving along the axis of the circular cavity, the end face of the movable frustum valve core is engaged and sealed with the tapered section when the wind tunnel is closed, and is flush with the end face of the tapered part of the base of the valve core when it is opened. The switching valve device proposed by the invention can reduce the damage of the hypersonic temporarily charged large-diameter wind tunnel and the valve plug, and improve the service life.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel experiments, and more specifically relates to a fast switching valve device and a switching method for large-diameter wind tunnel applications. Background technique [0002] In aerospace research, a new principle or design often requires experimentation. There are generally three methods of experimentation: numerical simulation, wind tunnel test and flight test. Numerical simulation costs less, but the setting of boundary conditions required for simulation is often not accurate enough to simulate the flow in real conditions. Although the flight test can truly simulate the actual flight situation, it costs a lot of money, and only a limited number of sensors can be arranged to collect data. Compared with the first two methods, the cost of wind tunnel test is in the middle. Compared with the flight test, the wind tunnel test can measure the parameters of any position through multiple tests; c...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a fast opening and closing valve device and a switching method for large-diameter wind tunnel applications, thereby solving the problem of the quick-opening valve structure applied to large-diameter wind tunnels in the prior art complex technical issues

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