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Adjusting device for a Francis turbine

A technology for adjusting devices and water turbines, applied in fluid pressure actuating devices, safety devices, engine seals, etc., can solve problems such as shortening the repair time of the servomotor, difficulty in controlling movable guide vanes, oil leakage of the servomotor, etc., and achieves space occupation Small, small radial displacement, precise control effect

Active Publication Date: 2018-11-27
浙江国正安全技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing hydraulic turbines control the movable guide vanes through the control ring, which is basically realized by installing two servomotors. In this way, when a servomotor is damaged or needs to be repaired, it makes it very difficult to control the movable guide vanes. not tall
When the existing Francis turbine adjusts the movable guide vane to a proper position, the opening of the guide vane is maintained by the locking device installed on the servomotor. Usually, the locking device can only be locked at the full close or the maximum opening. , so that the load of the servomotor continues, the maintenance time of the servomotor is shortened, and the possibility of oil leakage of the servomotor is increased

Method used

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  • Adjusting device for a Francis turbine
  • Adjusting device for a Francis turbine
  • Adjusting device for a Francis turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 , figure 2 and image 3 The adjustment device of the Francis turbine shown includes control ring 1, support base 2, servomotor 3, A cylinder head 3.1, B cylinder head 3.2, cylinder barrel 3.3, piston 3.4, guide ring 3.5, trapezoidal seal groove 3.6, guide Groove 3.7, sealing groove 3.8, buffer groove 3.9, piston rod 3.10, buffer head 3.11, sleeve 3.12, through hole 3.13, sedimentation tank 3.14, fixed rod 4, top cover 5, support rod 6 and limit rod 7, for The control ring 1 that controls the opening of the movable guide vane is installed on the top cover 5 of the water turbine, and three support seats 2 are equidistantly installed on the outer wall of the top cover 5, and each support seat 2 is symmetrically provided with two vertical support rods 6. There are six uniformly distributed fixed rods 4 on the top surface of the control ring 1, and the two ends of the servomotor 3 are respectively connected to the fixed rods 4 and the support rods 6 by ro...

Embodiment 2

[0037] Such as figure 1 , figure 2 and Figure 4 The adjustment device of the Francis turbine shown includes control ring 1, support base 2, servomotor 3, A cylinder head 3.1, B cylinder head 3.2, cylinder barrel 3.3, piston 3.4, guide ring 3.5, trapezoidal seal groove 3.6, guide Groove 3.7, sealing groove 3.8, buffer groove 3.9, piston rod 3.10, buffer head 3.11, sleeve 3.12, through hole 3.13, sedimentation tank 3.14, fixed rod 4, top cover 5, support rod 6 and limit rod 7, for The control ring 1 that controls the opening of the movable guide vane is installed on the top cover 5 of the water turbine, and three support seats 2 are equidistantly installed on the outer wall of the top cover 5, and each support seat 2 is symmetrically provided with two vertical support rods 6. There are six uniformly distributed fixed rods 4 on the top surface of the control ring 1, and the two ends of the servomotor 3 are respectively connected to the fixed rods 4 and the support rods 6 by r...

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Abstract

The invention discloses an adjusting device of a mixed flow water turbine. The adjusting device comprises a control ring, supporting bases and servomotors. The three supporting bases are installed on the outer side wall of a top cover at equal interval. Each supporting base is symmetrically provided with two vertical supporting rods. Six evenly-distributed fixing rods are arranged on the top face of the control ring. The two ends of each servomotor are rotationally connected to the fixing rods and the supporting rods. Straight teeth are evenly arranged on the upper edge of the control ring. The three supporting bases are each provided with a limiting rod. One end of each limiting rod is provided with straight teeth matched with the straight teeth on the upper edge of the control ring. The straight tooth ends of the limiting rods are installed towards the center of the control ring. The limiting rods are provided with straight teeth installed in cooperation with gears which are installed in cooperation with servo motors. The limiting rods are provided with limiting sleeves which are fixedly installed on the supporting bases. According to the technical purpose of the adjusting device of the mixed flow water turbine, the limiting rods are arranged to lock the control ring, and the six servomotors are arranged and distributed on the top of the control ring.

Description

technical field [0001] The invention relates to the field of water turbines, in particular to an adjusting device for a Francis water turbine. Background technique [0002] The control of the movable guide vanes of the water guide mechanism of the existing Francis turbines is mostly realized through the control of the control ring, and some of them are directly controlled by directly acting on the movable guide vanes through the servomotor. [0003] However, the existing hydraulic turbines control the movable guide vanes through the control ring, which is basically realized by installing two servomotors. In this way, when a servomotor is damaged or needs to be repaired, it makes it very difficult to control the movable guide vanes. not tall. When the existing Francis turbine adjusts the movable guide vane to a proper position, the opening of the guide vane is maintained by the locking device installed on the servomotor. Usually, the locking device can only be locked at the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B3/18F03B15/06F16J15/16F15B15/20F15B19/00
CPCF03B3/183F03B15/06F05B2270/602F05B2270/604F15B15/1433F15B15/1461F15B15/1471F15B19/005Y02E10/20
Inventor 王欢
Owner 浙江国正安全技术有限公司
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