Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preventing looseness of rotating rod of feedback signal potentiometer of hydrogovernor

A technology of feedback signal and potentiometer, which is applied in the direction of machines/engines, hydroelectric power generation, mechanical equipment, etc., can solve the problems of loose unit at the connection, small contact area, small fastening force, etc., and achieve large contact area, large contact, The effect of high fastening force

Inactive Publication Date: 2015-10-28
STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the connection between the existing servomotor displacement transmission rod and the potentiometer rotating rod has small contact area and small fastening force, which leads to loosening of the connection and instability of the unit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preventing looseness of rotating rod of feedback signal potentiometer of hydrogovernor
  • Method for preventing looseness of rotating rod of feedback signal potentiometer of hydrogovernor
  • Method for preventing looseness of rotating rod of feedback signal potentiometer of hydrogovernor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Specific implementation mode one: refer to image 3 and 4 Describe this embodiment in detail, a kind of method that prevents the rotating rod of feedback signal potentiometer of water turbine speed governor described in this embodiment from loosening, and described method is realized by following steps:

[0017] Step 1. Process the surfaces of both ends of the servomotor displacement transmission rod 3 into threads with gradually smaller diameters. The insides of both ends of the servomotor displacement transmission rod 3 are processed with central holes. The upper edge of the side wall of each end of the servomotor displacement transmission rod 3 Four circular grooves are evenly opened in the circumferential direction of the central hole;

[0018] Step 2. Connect two wedge nuts 2 with involute internal threads to one end of the two potentiometer rotating rods 1 respectively, and then screw one end of each potentiometer rotating rod 1 into the servomotor displacement t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preventing looseness of a rotating rod of a feedback signal potentiometer of a hydrogovernor, relates to the field of actions of servomotors of hydrogovernors, and aims to solve the problems of set instability caused by looseness in the connecting place due to small contact area and small fastening force in a traditional connecting mode between a servomotor displacement transmission rod and a potentiometer rotating rod and limitation on a connecting environment. The surfaces of two ends of the servomotor displacement transmission rod are machined to threads with gradually decreased diameters, and are both provided with center holes inside; four annular grooves are uniformly formed on the side wall of each end in the peripheral direction of the center hole; two wedged nuts with growing internal threads are respectively inserted at one ends of two potentiometer rotating rods; one end of each potentiometer rotating rod is correspondingly screwed into the center hole of one end of the servomotor displacement transmission rod; and the two wedged nuts are tightened with the threads on the surface of one end of the servomotor displacement transmission rod after passing through one end of one potentiometer rotating rod. The method can be used for fixing the servomotor displacement transmission rod and the potentiometer rotating rod.

Description

technical field [0001] The invention relates to a method for preventing a rotating rod of a feedback signal potentiometer of a water turbine governor from loosening. It belongs to the action field of a hydraulic turbine governor servomotor. Background technique [0002] The safe operation of hydraulic turbines has always been concerned. There are various reasons for the dynamic instability of the turbine. Not all of them are related to technical content. As mentioned in this article, the inherent defect of a part of the governor, which has a simple linking process, buried hidden dangers in the regulating system of the turbine and once became a thorny problem in a power plant. Dealing with this fault must be carried out in an anhydrous state of the steel pipe. It is necessary to stop |, remove the backup, close the steel pipe valve to empty the steel pipe water, and then repeatedly adjust the opening of the guide vane and adjust the position of the potentiometer shaft and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F03B15/00
CPCY02E10/20
Inventor 张礼清
Owner STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com