Position indicating mechanism for valve electric device
A technology of valve electric and indicating mechanism, applied in valve device, valve operation/release device, engine components, etc., can solve the problems of increasing cumulative idle stroke, affecting the control and indicating accuracy of the valve by the electric device, and achieve the transmission ratio Adjustable, simple structure, constant transmission precision
Inactive Publication Date: 2014-10-22
中国能建集团装备有限公司南京技术中心
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Problems solved by technology
[0004] The purpose of the present invention is to provide a position indicating mechanism for valve electric devices to solve the problem that the existing commonly used position indicating mechanism for valve electric devices is a multi-stage gear transmission type, and the needs of different transmission ratios are met by adjusting the position of the main transmission gear. As the transmission ratio increases, the number of acting gears also increases, resulting in a gradual increase in the cumulative idle stroke, which seriously affects the control and indication accuracy of the valve by the electric device.
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[0027] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] Such as figure 1 and figure 2 As shown, this embodiment provides a position indicating mechanism for a valve electric device, including a lower plate 1, an upper plate 2, a column 3, an input shaft 4, a planet carrier, a fixed central gear 5, a series of rotating central gears 6, a fixed planetary gear 7. Rotate the planetary gear series 8 and the indicating device. The upper plate 2 is provided with an indicating device. The upper plate 2 and the lower plate 1 are supported and fixed by the column 3. The planet carrier, the fixed central gear 5, The central gear series 6, the fixed planetary gear 7, and the rotating planetary gear series 8 are all arranged between the upper plate 2 and the lower plate 1, and the fixed central gear 5 is fixed on the upper plate 2, as image 3 As shown, the planet carrier includes a large shaft 9, a...
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The invention provides a position indication mechanism for a valve electric device. The position indication mechanism comprises a lower plate, an upper plate, upright columns, an input shaft, a planet carrier, a fixed center gear, a rotary center gear series, a fixed planetary gear, a rotary planetary gear series and an indication device, wherein the indication device is arranged on the upper plate, the upper plate and the lower plate are supported and fixed by using the upright columns, the planet carrier, the fixed center gear, the rotary center gear series, the fixed planetary gear and the rotary planetary gear series are arranged between the upper plate and the lower plate, the fixed center gear is fixed on the upper plate, and the planet carrier comprises a large shaft, a small shaft, an upper swinging rod and a lower swinging rod. The indication mechanism has the advantages that the effects of simple structure, convenience in installation, adjustable transmission ratio and high output precision are achieved, change with the regulation of a transmission ratio is avoided and the like, and ensures that the transmission ratio is large in adjustable range and the transmission precision is high and constant by fully utilizing the characteristic that a WW type planet mechanism is large in transmission ratio change after the number of teeth is slightly regulated.
Description
technical field [0001] The invention relates to a position indicating mechanism, in particular to a position indicating mechanism for a valve electric device. Background technique [0002] The valve electric device is the control equipment of the valve, which is used to connect or cut off the medium, such as water, steam, oil and gas. During the operation, it is necessary to know the opening position of the valve in order to accurately control the valve. Different valves will be equipped with electric devices with different transmission ratios. In order to reduce manufacturing costs, it is required that the same position indicating mechanism installed on electric devices with different transmission ratios can reflect the opening state of the valve within a certain angle. The angle requirement is less than 360o, generally It is 340o, which means that the transmission ratio of the position indicating mechanism of the valve electric device is required to be adjustable. Sinc...
Claims
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IPC IPC(8): F16K37/00F16K31/53
Inventor 翟欢乐鲁加明余于仿陆巍张丽娜
Owner 中国能建集团装备有限公司南京技术中心