Digital display measurement device of air gap of hydroelectric generating set

A technology for generating sets and measuring devices, applied to measuring devices, using electrical devices, using electromagnetic means, etc., can solve problems such as intermediate errors, cumbersome readings, and inaccurate readings, and achieve convenient use, large output signals, and convenient and fast operation Effect

Inactive Publication Date: 2016-02-24
CHINA YANGTZE POWER
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, wooden or steel inclined rulers are mostly used to measure the air gap. The surface of the inclined ruler is coated with display agent, and then the inclined ruler is inserted between the highest point of the stator and the rotor magnetic pole. Or the outer diameter micrometer measures the thickness of the inclined ruler at the scratched place, which is the air gap value. The defect of this measurement method is that it can only measure the values ​​​​at both ends of the magnetic pole, and cannot go deep into the middle part. Later, some improvements were made to the measurement tools. Change the inclined ruler into two inclined blocks, and the two inclined blocks form a cubic block after matching, and its thickness is slightly smaller than the air gap. One end of the two inclined blocks is welded to extend the handle. Then push the two inclined blocks tightly, use a vernier caliper to measure the staggered distance of the two handles, take out the measuring block, restore the staggered position of the two handles of the inclined block, and then use a vernier caliper to measure the thickness of the cube formed by the two inclined blocks, which is the measured value The obtained air gap value, although this measuring tool can be extended into a certain distance from the end to measure the air gap, but its reading is relatively cumbersome, and it may cause a large intermediate error when restoring the staggered position of the handle, resulting in insufficient readings accurate

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
  • Digital display measurement device of air gap of hydroelectric generating set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 Shown: a digital display air gap measuring device for hydroelectric generator sets, which includes a rack tension rod 1, a power supply 2, a processing and display unit 3, a packaging box 4, a wire 5, a rack 6, a potential sensor 7, The potentiometric brush 8, the first guide rail 9, the measuring block 11, the first gear 12, the second gear 13, the second guide rail 14 and the limit block 15, through two pairs of rack and pinion structures meshing with each other, the rack stretches the rod The longitudinal linear motion of the rack is converted into the lateral motion of the rack, the movement of the rack stretching rod drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear and the rack mesh with each other, and the rotation is converted into the rack Linear movement, the potential bru...

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 present invention relates to a digital display measurement device of an air gap of a hydroelectric generating set. Through adoption of a method of combining machinery with electronics, a vertical linear movement is converted to a transverse linear movement by means of two gear-rack structures in which gears mesh with racks; a potential brush is installed on a horizontal movement mechanism and is moved on a potential sensor so that a resistance value in a certain function relation with a transverse displacement is outputted; the resistance value is processed by a processing unit and displayed in a mode of an air gap real value. According to the invention, the problems that errors are large, data conversion is complex and a ruler is not able to enter into a certain depth between a magnetic pole and a stator core in a gap measurement in the prior art are solved, and therefore the air gap measurement is fast, accurate and visual.

Description

technical field [0001] The invention relates to a digital-display air gap measuring device for hydroelectric generating sets, which is suitable for measuring the air gaps of all hydroelectric generating sets, and is also applicable to some positions in other fields where relative gaps need to be measured, and has universality. Background technique [0002] The size of the air gap of the hydro-generator unit has a direct impact on the operating performance and technical and economic indicators of the unit. The gap measurement takes the minimum distance between the highest point of the magnetic pole and the stator core, so the air gap measurement must be accurate. At present, wooden or steel inclined rulers are mostly used to measure the air gap. The surface of the inclined ruler is coated with display agent, and then the inclined ruler is inserted between the highest point of the stator and the rotor magnetic pole. Or the outer diameter micrometer measures the thickness of th...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/14
Inventor 谢湘军秦岩平杨豆思宋珺唐德锋邱涛
Owner CHINA YANGTZE POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products