Angular stroke low-temperature valve electric executing mechanism

Abstract

The invention provides an angular stroke low-temperature valve electric executing mechanism. A shell, a handle and a transmission unit are included. The shell can sleeve a valve stuffing box and downwards extends. The handle is arranged at the lower portion of the shell, and a manual bevel gear is arranged in the shell to be connected with the handle. The transmission unit comprises a connecting shaft rod arranged on the top of the shell, the connecting shaft rod extends towards the lateral side to form a connecting shaft rod bevel gear, one transmission rod is parallel to the height directionof the shell, the top of the transmission rod is provided with a transmission rod upper bevel gear engaged with the connecting shaft rod bevel gear, and a transmission rod lower bevel gear is arranged at the bottom of the transmission rod and can be engaged with the manual bevel gear. The shell is used for sleeving the valve stuffing box, the height of the handle for manual valve control is downwards adjusted to the place adjacent to a pipeline, and the valve can be conveniently opened and closed during power failures. When micro leakage happens to the pipeline, the opening and closing handleis close to the pipeline, and maintenance personnel can conveniently control the valve in the pipeline maintaining process.

Description

technical field [0001] The invention belongs to the field of electric actuators, in particular to an electric actuator for a quarter-stroke cryogenic valve. Background technique [0002] With the development of society, the requirements for environmental protection technology are getting higher and higher, and LNG and other products that require low-temperature storage and transportation are developing more and more rapidly. Today's low-temperature valves, in order to ensure their sealing and protection of sealing materials, generally design stuffing boxes Higher, it is inconvenient to manually adjust, and after using the existing electric actuator, the overall height of the valve is increased; in order to prevent accidents such as power failure, the electric actuator is generally equipped with a handle for manual switch, but in its In the case of high height, it is not convenient for people to use the handle to control the valve, and most of the products stored and transpor...

AI Technical Summary

Problems solved by technology

[0002] With the development of society, the requirements for environmental protection technology are getting higher and higher, and LNG and other products that require low-temperature storage and transportation are developing more and more rapidly. Today's low-temperature valves, in order to ensure their sealing and protection of sealing materials, generally design stuffing boxes Higher, it is inconvenient to manually adjust, and after using the existing electric actuator, the overall height of the valve is increased; in order to prevent accidents such as power failure, the electric actuator is generally equipped with a handle for manual switch, but in its In the case of high height, it is not convenient for people to use the handle to control the valve, and most of the products stored and transported at low temperature are flammable, explosive or toxic, so they are prone to danger in some power failure situations

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