Water turbine guide vane end clearance adjustment device and adjustment method
A technology for adjusting devices and end face clearances, which is applied in hydropower, mechanical equipment, machines/engines, etc. It can solve the problems of time-consuming and labor-intensive adjustment process and difficult operation, and achieve the effect of reducing workload and making the adjustment process quick and convenient
Pending Publication Date: 2018-01-12
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0004] When this structure adjusts the clearance of the guide vane end face, it is necessary to dismantle the above-mentioned several components, and the adjustment process is time-consuming and laborious, especially in the limited space of the waterwheel room.
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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] Such as figure 1 As shown, a water turbine guide vane end face clearance adjustment device includes a guide vane shaft 10, the outer wall of the guide vane shaft 10 is connected with a guide vane arm 11, and the guide vane shaft 10 is connected with the guide vane arm 11 through the split pin 9, and the split pin 9 is a tapered pin, and there is a threaded hole at the center of the shaft at the top of the half pin 9, and screwed into the cock 8 in the threaded hole. The upper ends of the guide vane arm 11 and the guide vane shaft 10 are jointly connected with a shaft end cover 1, and the guide vane arm 11 and the shaft end cover 1 are connected by pins 2 and end cover fixing bolts 3, and the pins are cylindrical pins. There is a second threaded through hole 7 at the shaft center of the shaft end cover 1, and a guide vane lifting bolt ...
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The invention discloses a water turbine guide vane end clearance adjustment device which comprises a guide vane shaft; the outer wall of the guide vane shaft is connected with a guide vane arm; the upper ends of the guide vane arm and the guide vane shaft are jointly connected with a shaft end cover; a second threaded through hole is formed in the axis of the shaft end cover; a guide vane liftingbolt is placed in the second threaded through hole, and is connected with the guide vane shaft; a first threaded through hole is formed in the part, corresponding to the guide vane shaft, of the shaftend cover; and an adjustment bolt is screwed into the first threaded through hole. An adjustment method comprises the steps that the adjustment bolt is loosened; the guide vane lifting bolt is fastened or loosened by using a spanner; the adjustment bolt is fastened; and the guide vane lifting bolt is fastened by a torque spanner. With the adoption of the mode, when a guide vane end clearance is adjusted, the situation that adjustment is required after spare parts like the guide vane lifting bolt and an end cover pin are dismounted and then an adjustment block is taken out is avoided, the adjustment process is quick and convenient, and the workload of adjusting the guide vane end clearance is reduced.
Description
technical field [0001] The invention belongs to the technical field of water turbines, and relates to a device for adjusting the end surface gap of a water turbine guide vane, and also relates to a method for adjusting the end surface clearance of a water turbine guide vane. Background technique [0002] In the water guide mechanism of the water turbine, it is necessary to make the guide vane rotate flexibly and reduce the water flow loss when the water guide mechanism is closed, so the end face clearance of the guide vane of the turbine must be strictly controlled. [0003] The traditional adjustment method for the end face clearance of the guide vane is to measure the end face clearance of the guide vane after the water guiding mechanism is installed, and adjust the gap between the distribution guide vane and the top cover, the guide vane and the bottom ring according to the sum of the measured end face clearances. gap. When adjusting, it is necessary to remove the guide ...
Claims
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Login to View More IPC IPC(8): F03B3/18
CPCY02E10/20
Inventor 权强李言龙李作舟李君豪赵强
Owner STATE GRID CORP OF CHINA