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Guide vane position feedback device for horizontal hydraulic turbine set

A guide vane position and feedback device technology, applied in safety devices, reaction engines, mechanical equipment, etc., can solve problems such as poor stability, automation process failure, low accuracy, etc., to improve reliability, strong environmental applicability, High sensitivity effect

Pending Publication Date: 2017-10-17
STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a guide vane position feedback device for horizontal water turbine units in order to solve the problems of low accuracy and poor stability of the existing master switch, that is, the guide vane feedback device, which often requires human intervention to cause the failure of the automatic process

Method used

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  • Guide vane position feedback device for horizontal hydraulic turbine set
  • Guide vane position feedback device for horizontal hydraulic turbine set
  • Guide vane position feedback device for horizontal hydraulic turbine set

Examples

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specific Embodiment approach 1

[0014] Embodiment 1: The guide vane position feedback device for the horizontal hydraulic turbine unit in this embodiment includes a magnetic non-contact angle sensor 1, a measurement display controller 2, three support members 3 and a coupling 5. The support member 3 is composed of a A connecting plate 3-1, the middle long strip 3-2 and the second connecting plate 3-3 form an integral structure, the first connecting plate 3-1 is provided with bolt holes 3-4, the middle long strip 3-2 The first connecting plate 3-1 and the second connecting plate 3-3 are respectively arranged on the two sides of the plate, and the first connecting plate 3-1 and the second connecting plate 3-3 are respectively arranged on the middle long plate 3-2. On the two broad end faces, the first connecting plate 3-1 and the second connecting plate 3-3 are respectively perpendicular to the middle long strip 3-2, and the second connecting plate 3-3 of each support The annular flange 4-1 of the speed gear r...

specific Embodiment approach 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the measurement and display controller 2 is installed on the volute boss of the horizontal water turbine.

specific Embodiment approach 3

[0018] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the measurement and display controller 2 is installed on the volute boss of the horizontal water turbine through screws.

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Abstract

The invention relates to a guide vane position feedback device for a horizontal hydraulic turbine set. The problem that an existing control switch, namely a guide vane feedback device, is low in precision and poor in stability is solved. The feedback device comprises a magnetic sensing non-contact type angle sensor, a measurement display controller, three supporting pieces and a coupler. A shell of the angle sensor is cylindrical and provided with a circular partition plate. Three arc-shaped through holes are circumferentially and evenly formed in the circular partition plate. The angle sensor is fixed to the three supporting pieces through bolts. A connecting rod is welded to the end face of a servomotor transmission shaft. The central line of the connecting rod and the central line of the servomotor transmission shaft coincide with each other. A rotating shaft is connected with the connecting rod through the coupler. The angle sensor is connected with the measurement display controller through a control line. The feedback device can well respond to the opening degree of a unit guide vane, the success rate of the start and stop of a unit is ensured, and the stable running reliability is improved.

Description

technical field [0001] The invention relates to a guide vane position feedback device of a horizontal hydraulic turbine unit. Background technique [0002] The position feedback quantity of the guide vane of the hydraulic turbine unit is an important point quantity of the governor and the monitoring system, which directly affects the start-up, stop process and status display of the unit. The guide vane position feedback device is also called the master switch. A wide range of equipment that reflects the specific position of the guide vane switch opening, including fully closed, no-load, fully open, etc. [0003] The traditional master switch, that is, the guide vane feedback device, uses mechanical contact measurement, which is transmitted to the governor and monitoring system through simple data conversion. However, the mechanical contact measurement method has low accuracy and poor stability, and often requires Human intervention renders automated processes ineffective. ...

Claims

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Application Information

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IPC IPC(8): F03B15/00F03B3/18
CPCF03B15/00F03B3/18Y02E10/20
Inventor 徐洪涛芦国良陈磊邸群首刘海洋
Owner STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY
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