A vacuum valve remote control system and method

A remote control system and control system technology, which is applied in the field of vacuum valve remote control system, can solve problems such as leakage of cryostat sealing ring, poor vacuum degree, and failure of refrigeration system to return to normal working state, so as to achieve convenient structural installation Effect

CN107339486BActive Publication Date: 2019-09-20ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-09-20

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Abstract

The invention discloses a vacuum valve remote control system and method. The system comprises a vacuum valve, a speed reduction motor, a rotation stop flange, rotation stop pulleys, a fixed sliding sleeve and a control system body; a valve rod is connected with an output shaft of the speed reduction motor through a coupler, the inner side step of the rotation stop flange is matched with a flange protrusion at the end of the output shaft of the speed reduction motor and is fixed through a screw, multiple thread holes are evenly formed in the outer wall of the rotation stop flange, the rotation stop pulleys are fixed to the rotation stop flange through the thread holes, the fixed sliding sleeve is arranged outside the rotation stop flange, a flange base is arranged at one end of the fixed sliding sleeve, the flange base is in abut joint with the flange end of the vacuum valve, the flange base is locked through a fixing clamp and a screw, sliding grooves are milled in the side wall of the fixed sliding sleeve, the number and the position of the sliding grooves correspond to those of the rotation stop pulleys, and the rotation stop pulleys can slide along the sliding grooves. Remote control of the vacuum valve can be achieved, and according to instructions, opening and closing of the vacuum valve can be achieved.
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Description

technical field

[0001] The invention belongs to the field of valve control, and in particular relates to a vacuum valve remote control system and method. Background technique

[0002] The low-temperature refrigeration system needs the support of the vacuum unit. In the laboratory environment, the vacuum valve can be controlled manually, but under the condition of unattended remote work, both the vacuum and the refrigeration system must have remote control capabilities, otherwise it will be damaged after a power failure. It is impossible to re-evacuate (because the valve is in the closed position during the refrigeration process, after a long time of power failure, the vacuum degree will gradually deteriorate due to the inherent leakage of the sealing ring in the cryostat), which will cause the refrigeration system to fail to return to normal work state. Therefore, a control scheme must be designed to realize remote controllability of vacuum valves. The vacuum valve control...

Examples

Embodiment Construction

[0029] The present invention is described in further detail in conjunction with accompanying drawing now.

[0030] Vacuum valves are vacuum system components used in vacuum systems to change the direction of airflow, adjust the size of airflow, and cut off or connect pipelines. At present, there are many types of vacuum valves on the market. According to the driving mode, they can be divided into automatic valves, power-driven valves and manual valves. According to the working pressure, they can be divided into low vacuum valves, high vacuum valves and ultra-high vacuum valves. It is a non-metallic and metal sealing valve. Considering the working pressure, working temperature, valve size and ensuring low leakage rate, etc., this design selects the AVB-CU-KF25-M high vacuum valve produced by Taiwan Riyang Electronic Technology (HTC) Company. This series of vacuum valves has manual and electric driving modes, and the electric driving mode requires working gas assistance (an add...