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65results about How to "Large size" patented technology

Actuator for valve

This invention relates to an actuator for a valve to be loaded in a rotary valve, such as a ball valve or a butterfly valve. An object is to make it possible to control the angle of the valve accurately, detect the open-close position of the valve accurately and materialize reduction of size and weight and saving of cost owing to the simplification of structure. Another object is to provide a compact and economically excellent actuator for a valve which enables valve opening-detecting members, such as limit switches and potentiometers and other component members to be put to common use without reference to the size of the output torque and ensures accurate detection of the open-close position of the valve. An actuator for a valve serving to transfer turning power from a motor to an output shaft through an inner gearing planet gear speed reducing mechanism that is imposed in a casing and adapted to effect speed reduction of the turning power, and utilize rotation of the output shaft to open and close a valve by rotation. The gear speed reduction mechanism comprises an eccentric body rotated in consequence of transfer of the turning power from the motor, an outer gear disposed so as to generate a vibrating rotation through the eccentric body, an inner gear meshed in an inscribing manner with the outer gear, a rotation transferring mechanism for extracting rotation from the vibrating rotation of the outer gear and transferring the extracted rotation to the output shaft, and an output shaft connected through the rotation transferring mechanism. The gear speed reducing mechanism is furnished with an angular positioning part that is a stopper part or an engaging region for controlling the rotation of the output shaft in a prescribed angle.
Owner:KITZ CORP

Hot isostatic pressing device suitable for ammonothermally producing gallium nitride monocrystal product

The invention discloses a hot isostatic pressing device suitable for ammonothermally producing a gallium nitride monocrystal product. The hot isostatic pressing device is characterized by comprising aworking cylinder (2), in which a hot area is configured, and a gallium nitride single crystal growth container (3) arranged in the hot area (2) and capable of generating gallium nitride single crystal in diameter of 200-400 mm or larger; the hot zone is divided into an upper heating zone and a lower heating zone, which are used for correspondingly heating the crystallization zone and the dissolving zone of the gallium nitride single crystal growth container (3) respectively. Due to the hot area arranged correspondingly to the position of a baffle (18) in the gallium nitride single crystal growth container (3), it is able to generate a middle heat insulation ring (16) which enables the upper area and the lower area of the baffle (18) to generate a step temperature difference suitable for generating a gallium nitride single crystal product through the ammonothermal method. According to the device, the gallium nitride single crystal growth container (3) is improved, that is, the workingstress of the high-pressure kettle becomes pressure stress, so that the specification and size of the integrally forged gallium nitride single crystal growth container (3) can be increased, and a gallium nitride single crystal product in diameter of 200-400 mm or larger can be generated.
Owner:SICHUAN AVIATION IND CHUANXI MACHINE
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