Valve connecting device for wind tunnel experiment

Abstract

The invention belongs to the technical field of wind tunnel experiment equipment. Aiming at the technical problem of high-temperature and high-pressure gas leakage caused by pipeline deformation or flange sealing failure due to bending moment formed on a connecting pipeline by a connecting mode in the prior art, the invention provides a valve connecting device for a wind tunnel experiment. The device is provided with a lifting device, the lifting device comprises a flange clamp, an elastic supporting mechanism and a sliding base, the lower end of the sliding base is fixed to the ground, the upper end of the sliding base is connected with the elastic supporting mechanism, the flange clamp is arranged at the top end of the elastic supporting mechanism, and the flange clamp is arranged on a connecting pipeline of a high-temperature valve in a sleeving mode to lock a high-temperature valve flange. With the device, the bending moment formed on the connecting pipeline due to longitudinal extension of a heat storage heater or the dead weight of a valve body during preheating can be greatly reduced, then the possibility of flange leakage at the hoop is avoided, and the the safety is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel experiment equipment, and in particular relates to a valve connection device for wind tunnel experiments. Background technique [0002] The wind tunnel is a necessary equipment for carrying out simulated flight tests on the ground. The regenerative pure air wind tunnel achieves rapid temperature rise through the convective heat exchange between the air and the regenerator, and can provide relatively clean high-enthalpy gas incoming flow, which truly reflects the incoming flow components, heat and chemical characteristics faced by the aircraft. Due to the advantages of high total heating temperature, large flow rate and long working time, it has been widely recognized internationally. However, due to its high technical threshold, few pure air wind tunnels have been successfully developed at home and abroad. The heat storage heater is one of the core components of the pure air wind tunnel. In o...

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Problems solved by technology

[0004] In view of the technical problems existing in the prior art that the high-temperature valve connection method forms a bending moment on the connecting pipe, causing pipe deformation or flange sealing failure, resulting in high-temperature and high-pressure gas leakage, the purpose of the present invention is to provide a valve connection device for wind tunnel experiments , especially the valve lifting device for pure air wind tunnel experiments

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