A vacuum gate valve with guide ring

Abstract

The invention discloses a vacuum insert valve with a guide ring. The bottom of the valve plate of the vacuum plug-in valve is fixedly connected with a guide ring. When the vacuum plug-in valve is opened, the valve plate moves upward along the vertical guide rail I and the vertical guide rail II, and is buffered by the buffer I on the top of the valve plate. The vertical limit screw Ⅰ fixed on the right end of the opening limit block tightens the lower limit boss, the guide ring is in the center of the air flow channel in the valve body, the inner surface of the guide ring and the inner surface of the flow channel are smoothly transitioned, and the vacuum is connected. room and the external environment, and maintain a good aerodynamic profile of the airflow channel. The vacuum gate valve is suitable for vacuum systems that need to establish a supersonic flow field. At the same time, it can be designed for supersonic wind tunnels, aero engines and other valves that need to isolate the vacuum environment when they are closed and maintain a good aerodynamic profile when they are opened. Provide lessons and references.

Description

technical field [0001] The invention belongs to the field of supersonic technology, and in particular relates to a vacuum plug-in valve with a guide ring. Background technique [0002] In the vacuum system, the vacuum gate valve is installed between the vacuum chamber and the external atmospheric environment. When it is opened quickly, the front and rear parts of the vacuum valve are connected to form a supersonic airflow channel with good flow field quality. This requires the vacuum gate valve to have the ability to isolate the vacuum environment from the atmospheric environment when it is closed, and to have the ability to communicate with the air flow channel when it is opened. [0003] To achieve the aerodynamic characteristics of the air flow, the supersonic air flow channel must be designed in a specific shape. Therefore, when the vacuum flapper valve is opened, it is not enough to meet the requirements of the air flow channel, and the smooth transition of the air flo...

AI Technical Summary

Problems solved by technology

After the vacuum butterfly valve is opened to form an airflow channel, the valve plate of the vacuum butterfly valve is always in the airflow channel due to the structural limitation of the vacuum butterfly valve, which increases the blockage of the flow channel and greatly affects the quality of the supersonic flow field.

Although the vacuum flapper valve will remove the valve plate in the airflow path after it is opened to form the airflow path, there is no problem of increasing the blockage of the flow path. However, there is no vacuum flapper valve on the market that can adapt to the airflow path. Requirements, when it is opened, it cannot maintain a good aerodynamic profile of the airflow channel, and cannot guarantee the flow field quality of the supersonic flow field

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