A vacuum valve remote control system and method

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.

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...

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Problems solved by technology

[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

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