CN2299300Y - Measuring device for aperture of guide blade of water turbine - Google Patents
Measuring device for aperture of guide blade of water turbine Download PDFInfo
- Publication number
- CN2299300Y CN2299300Y CN 96249184 CN96249184U CN2299300Y CN 2299300 Y CN2299300 Y CN 2299300Y CN 96249184 CN96249184 CN 96249184 CN 96249184 U CN96249184 U CN 96249184U CN 2299300 Y CN2299300 Y CN 2299300Y
- Authority
- CN
- China
- Prior art keywords
- servomotor
- sensor
- triangular guide
- fixing
- triangular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model provides a device for measuring the opening degree of the guide blade of the water turbine. The push-pull rod of a servomotor is provided with a triangular travel conversion guide rail. The triangular travel conversion guide rail is provided with a travel conversion rod with a rolling bearing. The upper end of the triangular travel conversion guide rail is connected with the iron core of a sensor through a connecting piece. When the push-pull rod of the servomotor moves, the bearing of the travel conversion rod rolls on the triangular guide rail, and the horizontal displacement L of the push-pull rod of the servomotor is changed into the vertical displacement s (through a connecting piece and the measurement of a sensor). As the travel of the push-pull rod of the servomotor has dependence relation with the opening degree of the guide blade, the opening degree value of the guide blade is obtained. The utility model is widely suitable for the operation monitoring of the water turbine of the water power station and the feedback of the regulator.
Description
The utility model relates to a kind of guide vanes of water turbine aperture measurement device, and is particularly a kind of by measuring the servomotor pull bar stroke of hydrogovernor, asks for the device of guide vane opening value.
Existing guide vanes of water turbine aperture measurement device is to adopt the potentiometer voltage divider principle.In this device, have a swiveling wheel to link to each other with a rotating potentiometer is coaxial, rotate the race inner disc around wire rope link to each other with the servomotor pull bar.When the servomotor pull bar moved, wire rope drove swiveling wheel and rotational potentiometer rotation, made that the branch pressure voltage value changes on the potentiometer, by measuring this branch pressure voltage value, reached the purpose of measuring guide vane opening.This measurement mechanism major defect is, potentiometer contact long-time running poor reliability, and the wire rope driving error is bigger.
The purpose of this utility model provide a kind of by triangular guide as the throw-over gear of servomotor pull bar stroke, high precision inductive displacement transducer guide vane opening measurement mechanism as measuring mechanism, it can be realized the conversion of servomotor pull bar stroke effectively and measure, calculate and ask for the guide vane opening value.
The purpose of this utility model is achieved in that parallel installation triangle stroke conversion guide rail (hereinafter to be referred as triangular guide), triangular guide inclination angle of inclined plane are α on the servomotor pull bar of handling stator switching motion; On the triangular guide inclined-plane, the stroke conversion rod of a band rolling bearing is installed, stroke conversion rod upper end is connected with high precision direct current displacement transducer by a connecting piece.When servomotor pull bar motion opened and closed stator, triangular guide was followed shift motion L, stroke conversion rod vertical moving s, and pass to high precision direct current displacement transducer by brace, measure the s value, then L=s/tg α.Owing to have correlationship between servomotor pull bar stroke and the guide vane opening, therefore can calculate the guide vane opening value.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a principle assumption diagram of the present utility model.
Fig. 2 is triangular guide figure.
The pull bar of 1. web joints, 2. triangular guides, 3. rolling bearings, 4. springs, 5. pilot sleeves, 6. stroke conversion rods, 7. support plates, 8. braces, 9. sensor iron cores, 10. fixed muffles, 11. gib screws, 12. sensors, 13. cables, 14. fixing card 15. hydraulic turbine servomotors among the figure
Triangular guide of the present utility model (2) is fixed on the web joint (1), and web joint (1) is fixing with the pull bar (15) of hydraulic turbine servomotor by fixing card (14); Stroke conversion rod (6) contacts with triangular guide (2) by the rolling bearing (3) that is installed in its lower end, its upper end is passed pilot sleeve (5), is linked to each other with sensor iron core (9) by brace (8), pilot sleeve (5) is fixed on the support plate (7), and a spring (4) is installed between pilot sleeve (5) and rolling bearing (3); Sensor (12) is fixing by fixed muffle (10) and support plate (7), and support plate (7) is fixed on the servomotor cylinder body; Sensor outer housing can move up and down in fixed muffle (10), regulates the measurement zero point of sensor, uses gib screw (11) fixing then.
According to above structure, when servomotor operation pull bar (15) makes stator open and close motion, be fixed on the horizontal accompany movement of triangular guide (2) on the pull bar (15), the rolling bearing (3) of stroke conversion rod (6) lower end is rolled on triangular guide (2) inclined-plane, cause stroke conversion rod (6) upwards (or downwards) move, convert horizontal displacement to the vertical stroke amount.When triangular guide (2) when moving horizontally L, stroke conversion rod (8) shift motion s=Ltg α, s can be measured by the sensor (12) that links to each other with stroke conversion rod (6) by brace (8).Because servomotor pull bar stroke and guide vane opening have correlationship, thereby can calculate the guide vane opening value.
The utility model makes the wide range horizontal displacement be converted to journey perpendicular displacement amount in a small amount because of using triangular guide; Carry out displacement measurement with contactless inductance type direct current displacement transducer, when having overcome use potentiometer method, the shortcoming that sliding contact is unreliable, the steel wire driving error is big.
Claims (3)
1. guide vanes of water turbine aperture measurement device, it is characterized in that: triangular guide (2) is fixed on the web joint (1), and web joint (1) is fixing with the pull bar (15) of hydraulic turbine servomotor by fixing card (14); Stroke conversion rod (6) contacts with triangular guide (2) by the rolling bearing (3) that is installed in its lower end, passes pilot sleeve (5), links to each other with sensor iron core (9) by brace (8) in its upper end, and pilot sleeve (5) is fixed on the support plate (7); One spring (4) is installed between pilot sleeve (5) and rolling bearing (3); Sensor (12) is fixing by fixed muffle (10) and support plate (7), and support plate (7) is fixed on the servomotor cylinder body; Sensor outer housing can move up and down in fixed muffle (10), regulates the measurement zero point of sensor, uses gib screw (11) fixing then.
2. measurement mechanism according to claim 1 is characterized in that; Triangular guide (2) links to each other with fixing card (14) by web joint (1), fixing card (14) is fixing with the pull bar (15) of hydraulic turbine servomotor, when servomotor manipulation pull bar (15) makes stator open and close motion, triangular guide is followed and is moved horizontally, and makes the horizontal throw amount convert the vertical stroke amount to by triangular guide.
3. measurement mechanism according to claim 1, it is characterized in that: the iron core (9) of sensor (12) links to each other with stroke conversion rod (6) by brace (8), stroke conversion rod (6) contacts with triangular guide (2) by the rolling bearing of installing under it (3), in order to measure the vertical stroke amount that triangular guide converts to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96249184 CN2299300Y (en) | 1996-12-27 | 1996-12-27 | Measuring device for aperture of guide blade of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96249184 CN2299300Y (en) | 1996-12-27 | 1996-12-27 | Measuring device for aperture of guide blade of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299300Y true CN2299300Y (en) | 1998-12-02 |
Family
ID=33920843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96249184 Expired - Fee Related CN2299300Y (en) | 1996-12-27 | 1996-12-27 | Measuring device for aperture of guide blade of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299300Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047950A (en) * | 2012-12-26 | 2013-04-17 | 广西平班水电开发有限公司 | Blade-openness feedback measuring device of an axial-flow rotary-slurry water turbine |
| CN103512480A (en) * | 2012-06-26 | 2014-01-15 | 广西玉柴机器股份有限公司 | Displacement measuring device for supercharger bypass valve push rod |
| CN104389732A (en) * | 2014-10-13 | 2015-03-04 | 大唐陈村水力发电厂 | Method for adjusting length of push-pull rod of servomotor |
| CN105241416A (en) * | 2015-11-19 | 2016-01-13 | 湖南天雁机械有限责任公司 | Turbine volute bleed valve opening measurement device |
| CN107014336A (en) * | 2017-05-16 | 2017-08-04 | 北京京诚之星科技开发有限公司 | Mechanical plate type detection device |
| CN108871154A (en) * | 2018-07-23 | 2018-11-23 | 国网福建省电力有限公司 | Dragline type guide vane opening measuring device |
| CN117685871A (en) * | 2024-02-04 | 2024-03-12 | 东方电气集团东方电机有限公司 | Guide vane opening monitoring method, monitoring device and computer readable storage medium |
-
1996
- 1996-12-27 CN CN 96249184 patent/CN2299300Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512480A (en) * | 2012-06-26 | 2014-01-15 | 广西玉柴机器股份有限公司 | Displacement measuring device for supercharger bypass valve push rod |
| CN103047950A (en) * | 2012-12-26 | 2013-04-17 | 广西平班水电开发有限公司 | Blade-openness feedback measuring device of an axial-flow rotary-slurry water turbine |
| CN104389732A (en) * | 2014-10-13 | 2015-03-04 | 大唐陈村水力发电厂 | Method for adjusting length of push-pull rod of servomotor |
| CN105241416A (en) * | 2015-11-19 | 2016-01-13 | 湖南天雁机械有限责任公司 | Turbine volute bleed valve opening measurement device |
| CN105241416B (en) * | 2015-11-19 | 2017-11-28 | 湖南天雁机械有限责任公司 | Turbine box deflation valve openness measuring device |
| CN107014336A (en) * | 2017-05-16 | 2017-08-04 | 北京京诚之星科技开发有限公司 | Mechanical plate type detection device |
| CN108871154A (en) * | 2018-07-23 | 2018-11-23 | 国网福建省电力有限公司 | Dragline type guide vane opening measuring device |
| CN117685871A (en) * | 2024-02-04 | 2024-03-12 | 东方电气集团东方电机有限公司 | Guide vane opening monitoring method, monitoring device and computer readable storage medium |
| CN117685871B (en) * | 2024-02-04 | 2024-04-16 | 东方电气集团东方电机有限公司 | Guide vane opening monitoring method, monitoring device and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |