A New Locking Device for Control Ring of Turbine Guide Vane
A locking device and control ring technology, applied in hydropower, mechanical equipment, machines/engines, etc., can solve problems such as potential safety hazards, locking failures, and inability to lock devices installed on guide vane servomotors
Active Publication Date: 2017-10-20
TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In some cases, due to space constraints, the locking device cannot be installed on the guide vane servomotor. In addition, the existing hydraulic turbine locking device is installed on the governor and locked by hydraulic pressure. If the external power supply is cut off for too long, the speed regulation Loss of pressure in the pressure oil tank of the device will cause the lock to fail, posing a safety hazard. Therefore, it is necessary to develop a new locking device for the guide vane control ring
Method used
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Embodiment Construction
[0012] Some preferred embodiments of the present invention are listed below to help further understanding of the present invention, and the scope of protection of the present invention is not limited to these preferred embodiments.
[0013] like figure 1 and figure 2 A novel water turbine guide vane control ring locking device is shown, which is characterized in that it consists of a nut 1, a lock nut 2, a support shaft 3, a servomotor 4, a sliding and thrust self-lubricating bearing 5, a shaft 6, a retaining arm 7, and a baffle 8. The support cover 9, the control ring block 10 and the control ring 11 are composed. The nut 1 is welded on the support cover 9, and the servomotor 4 is an earring type servomotor, which is fixed on the supporting shaft 3 and the lock nut 2. On the cover 9, its head earring is connected with the tail earring of the retaining arm 7 by a pin shaft, and the retaining arm 7 is installed and fixed on the shaft 6 supporting the cover 9, and a self-lubri...
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The invention provides a novel guide vane control ring locking device for a water turbine. The novel guide vane control ring locking device for the water turbine is characterized by being composed of a nut, a lock nut, a fulcrum shaft, a servomotor, a slide and thrust self-lubricating bearing, a shaft, a stop arm, an arc-shaped baffle, a supporting cover, a control ring check block and a control ring, wherein the nut is welded to the supporting cover; the servomotor is fixed to the supporting cover through the fulcrum shaft and the lock nut; the head of the servomotor is connected with a lug ring on the tail of the stop arm through a pin shaft; the stop arm is mounted and fixed to the shaft of the supporting cover; the self-lubricating bearing is arranged between the stop arm and the shaft; the arc-shaped baffle is welded to the control ring check block; the control ring check block is located at one end of the control ring; the control ring check block is fixedly connected with the control ring. The novel guide vane control ring locking device for the water turbine has the advantages and positive effects that the locking device can meet the requirements of a mixed flow and axial flow water turbine for reliably locking the guide vane control ring and is small in installation dimension, simple and reliable; due to an integrated structure, the novel guide vane control ring locking device is convenient to machine, mount and demount; by the adoption of an arc-shaped structure of a locking surface, the servomotor is not stressed in the locking process, so large reverse force can be borne.
Description
Technical field: [0001] The invention belongs to the components of the water guiding mechanism of mixed-flow and axial-flow water turbines of hydroelectric power generation equipment, and in particular relates to a novel water turbine guide vane control ring locking device designed for locking the guide vane control ring. Background technique: [0002] When the mixed flow and axial flow turbines are overhauled or in an accident, the guide vanes must be reliably fixed at the fully closed position to prevent the guide vanes from being washed away by water and cause accidents. At the same time, the guide vanes can be fixed to facilitate maintenance and other adjustments in the fully open position. In some cases, due to space constraints, the locking device cannot be installed on the guide vane servomotor. In addition, the existing hydraulic turbine locking device is installed on the governor and locked by hydraulic pressure. If the external power supply is cut off for too long,...
Claims
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IPC IPC(8): F03B3/18
CPCF03B3/18Y02E10/20
Inventor 高志孙江陈德水周学均张志斌严孟
Owner TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD