CN107255061A - A kind of horizontal hydraulic unit feedback of guide blade position device - Google Patents
A kind of horizontal hydraulic unit feedback of guide blade position device Download PDFInfo
- Publication number
- CN107255061A CN107255061A CN201710681086.2A CN201710681086A CN107255061A CN 107255061 A CN107255061 A CN 107255061A CN 201710681086 A CN201710681086 A CN 201710681086A CN 107255061 A CN107255061 A CN 107255061A
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- CN
- China
- Prior art keywords
- connecting plate
- angle sensor
- hydraulic unit
- guide blade
- blade position
- 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.)
- Pending
Links
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- -1 vapour Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
A kind of horizontal hydraulic unit feedback of guide blade position device, the present invention relates to a kind of feedback of guide blade position device of horizontal hydraulic unit, it is the problem of i.e. stator feedback device accuracy is low, stability is poor in order to solve existing control switch.The feedback device includes magnetosensitive non-contact angle sensor, measurement display control instrument, 3 support members and shaft coupling, the shell of angular transducer is cylindrical shape, circular bulkheads are provided with shell, circular bulkheads are circumferentially evenly arranged with 3 arc-shaped through holes, angle sensor is set to be fixed on 3 support members by bolt, connecting rod is welded with the end face of servomotor power transmission shaft, the center line of the center line of connecting rod and servomotor power transmission shaft coincides, it is connected between rotating shaft and connecting rod by shaft coupling, angular transducer is connected by control line with measurement display control instrument.The present invention feedback device can be good reaction unit guide vane opening, it is ensured that the success rate of Unit Commitment machine, improve the reliability of stable operation.
Description
Technical field
The present invention relates to a kind of feedback of guide blade position device of horizontal hydraulic unit.
Background technology
Water turbine set feedback of guide blade position amount is speed regulator and the important point amount of monitoring system, directly affect the opening of unit,
Flow and status display are shut down, feedback of guide blade position device is also commonly referred to as control switch, application is wider in hydraulic power plant
A kind of general equipment, reflection stator switch aperture particular location, including fully closed, unloaded, standard-sized sheet etc..
Traditional control switch is that stator feedback device uses mechanical contact measurement, is passed through simple data conversion
To speed regulator and monitoring system, but mechanical contact metering system accuracy is low, stability is poor, it is also often desirable to human intervention cause
Automatic flow is set to fail.
The content of the invention
The invention aims to solve, existing control switch i.e. stator feedback device accuracy is low, stability is poor,
Being frequently necessary to human intervention causes the problem of automatic flow fails, and provides a kind of horizontal hydraulic unit feedback of guide blade position
Device.
Horizontal hydraulic unit of the present invention feedback of guide blade position device includes magnetosensitive non-contact angle sensor, measurement and shown
Show controller, 3 support members and shaft coupling, support member is by the first connecting plate, middle part strip plate and the second connecting plate composition one
Structure, is provided with bolt hole, the both sides plate face of middle part strip plate on the first connecting plate and sets the first connecting plate and second respectively
Connecting plate, the first connecting plate and the second connecting plate are separately positioned on two broadside end faces of middle part strip plate, and the first connection
Plate and the second connecting plate are perpendicular with middle part strip plate respectively, the second connecting plate and the speed regulator rotary shaft axle sleeve of each support member
Annular flange contact and be arranged on the anchor ring of annular flange, 3 support members are evenly arranged in annular flange；
The shell of magnetosensitive non-contact angle sensor is cylindrical shape, is extended with and turns in magnetosensitive non-contact angle sensor
Circular bulkheads are provided with the shell surface of axle, 3 arc-shaped through holes, 3 bolt difference are circumferentially evenly arranged with along circular bulkheads
Magnetosensitive contactless angle sensing is set to be fixed on the first connecting plate of 3 support members through 3 arc-shaped through holes, in servomotor
Connecting rod is welded with the end face of power transmission shaft, the center line of the center line and servomotor power transmission shaft of connecting rod coincides, and magnetosensitive is non-
It is connected between the rotating shaft of contact type angle sensor and connecting rod by shaft coupling, magnetosensitive non-contact angle sensor passes through control
Line processed is connected with measurement display control instrument.
The present invention is using magnetosensitive non-contact angle sensor as measurement apparatus, and measurement display control instrument turns as signal
Change, display output device, two devices, which pass through to debug, coordinates the common purpose for completing feedback of guide blade position.
Horizontal hydraulic unit of the present invention uses advanced magnetosensitive contactless angle to sense with feedback of guide blade position device
Device, its have contactless, noiseless, high sensitivity, high duplication, close to the infinite rotational life-span；Ambient adaptability is strong simultaneously, can
For the severe industrial application environment such as water, oil, vapour, dust, high/low temperature, vibratory impulse.Display control instrument is measured simultaneously from tool
There is high-resolution, broken line amendment and a variety of filtering algorithms and stronger antijamming capability, property are carried out to non-linear input signal
The superior controller of energy.
The drawbacks of present invention solves traditional control switch, reaction unit guide vane opening that can be good, it is ensured that unit
The success rate of start and stop, reduces the labor intensity of operation maintenance personnel, improves the reliability of stable operation.
Brief description of the drawings
Fig. 1 is the structural representation of horizontal hydraulic unit feedback of guide blade position device of the present invention；
Fig. 2 is the front view of the magnetosensitive non-contact angle sensor with 3 support members；
Fig. 3 is the side view of magnetosensitive non-contact angle sensor；
Fig. 4 is the structural representation of support member.
Embodiment
Embodiment one：Present embodiment horizontal hydraulic unit includes magnetosensitive noncontact with feedback of guide blade position device
Formula angular transducer 1, measurement display control instrument 2,3 support members 3 and shaft couplings 5, support member 3 is by the first connecting plate 3-1, middle part
Strip plate 3-2 and the second connecting plate 3-3 composition integrative-structures, are provided with bolt hole 3-4, middle part strip on the first connecting plate 3-1
The first connecting plate 3-1 and the second connecting plate 3-3, the first connecting plate 3-1 and second is set to connect in plate 3-2 both sides plate face respectively
Plate 3-3 is separately positioned on middle part strip plate 3-2 two broadside end faces, and 3-3 points of the first connecting plate 3-1 and the second connecting plate
Not perpendicular with middle part strip plate 3-2, the second connecting plate 3-3 and speed regulator rotary shaft axle sleeve 4 of each support member 3 annulus are convex
Edge 4-1 is contacted and is arranged on annular flange 4-1 anchor ring, and 3 support members 3 are evenly arranged on annular flange 4-1；
The shell of magnetosensitive non-contact angle sensor 1 is cylindrical shape, is extended with magnetosensitive non-contact angle sensor 1
Circular bulkheads 1-2 is provided with rotating shaft 1-1 shell surface, 3 arc-shaped through hole 1- are circumferentially evenly arranged with along circular bulkheads 1-2
3,3 bolts, which are each passed through 3 arc-shaped through hole 1-3, makes magnetosensitive non-contact angle sensor 1 be fixed on 3 support members 3
On first connecting plate 3-1, connecting rod 6, the center line and servomotor of connecting rod 6 are welded with the end face of servomotor power transmission shaft 7
The center line of power transmission shaft 7 is coincided, and shaft coupling is passed through between the rotating shaft 1-1 and connecting rod 6 of magnetosensitive non-contact angle sensor 1
5 are connected, and magnetosensitive non-contact angle sensor 1 is connected by control line with measurement display control instrument 2.
Present embodiment horizontal hydraulic unit feedback of guide blade position device, including magnetosensitive non-contact angle sensor and
Display control instrument two parts are measured, realize that stator displacement is converted to the purpose of digital quantity.Traditional control switch is solved to lead
Have that mechanical trip contact is not in place, redundant ability is poor in leaf switching process, the problem of needing artificially frequently manually adjust, it is ensured that
The accuracy and operation stability of feedback of guide blade position.
Embodiment two：Present embodiment is installed from measuring display control instrument 2 unlike embodiment one
On the spiral case boss of horizontal water turbine.
Embodiment three：Present embodiment passes through from measuring display control instrument 2 unlike embodiment two
Screw is arranged on the spiral case boss of horizontal water turbine.
Embodiment four：In support member 3 unlike one of present embodiment and embodiment one to three
Screw hole 3-5 is provided with second connecting plate 3-3, support member 3 is by screw connection on the anchor ring in annular flange 4-1.
Embodiment five：Connecting rod 6 is straight unlike one of present embodiment and embodiment one to four
Footpath is 10mm.
Embodiment：The present embodiment horizontal hydraulic unit is sensed with feedback of guide blade position device including magnetosensitive contactless angle
Device 1, measurement display control instrument 2,3 support members 3 and shaft couplings 5, support member 3 is by the first connecting plate 3-1, middle part strip plate 3-2
Integrative-structure is constituted with the second connecting plate 3-3, bolt hole 3-4, the two of middle part strip plate 3-2 are provided with the first connecting plate 3-1
The first connecting plate 3-1 and the second connecting plate 3-3, the first connecting plate 3-1 and the second connecting plate 3-3 is set to distinguish in lateral plates respectively
On two broadside end faces for being arranged on middle part strip plate 3-2, and the first connecting plate 3-1 and the second connecting plate 3-3 respectively with middle part
Strip plate 3-2 is perpendicular, and the second connecting plate 3-3 and speed regulator rotary shaft axle sleeve 4 of each support member 3 annular flange 4-1 connect
Touch and be arranged on annular flange 4-1 anchor ring, 3 support members 3 are evenly arranged on annular flange 4-1；
The shell of magnetosensitive non-contact angle sensor 1 is cylindrical shape, is extended with magnetosensitive non-contact angle sensor 1
Circular bulkheads 1-2 is provided with rotating shaft 1-1, the shell surface of magnetosensitive non-contact angle sensor 1, it is circumferential along circular bulkheads 1-2
3 arc-shaped through hole 1-3 are evenly arranged with, 3 bolts, which are each passed through 3 arc-shaped through hole 1-3, makes magnetosensitive contactless angle
Sensor 1 is fixed on the first connecting plate 3-1 of 3 support members 3, and connecting rod 6 is welded with the end face of servomotor power transmission shaft 7
(diameter of phi 10), the center line of the center line and servomotor power transmission shaft 7 of connecting rod 6 coincides, magnetosensitive contactless angle sensing
Be connected between the rotating shaft 1-1 of device 1 and connecting rod 6 by shaft coupling 5, magnetosensitive non-contact angle sensor 1 by control line with
Display control instrument 2 is measured to be connected.
Contactless angular transducer described in the present embodiment is selected from the DWQCAB-A- that Beijing Tian Hai Science and Technology Ltd.s produce
90-G.Measure display control instrument and be selected from the MIC-6B series that Shanghai Tian He instrument and meter for automations Co., Ltd produces.
The present embodiment magnetosensitive non-contact angle sensor is arranged on governor movement axle, and gate positing amount is passed through and transmission
The synchronous sensor of axle is measured, and measurement gained is transferred into measurement display control instrument.Measure display control instrument and be arranged on gold
On the boss for belonging to spiral case, the incoming data of contactless angular transducer are subject to analysis and arrangement and are sent to speed regulator and monitoring system
System, the purpose automatically controlled to realize.
The present embodiment with the use of disclosure satisfy that live actual motion requirement, only needs angular transducer and display control instrument
Measurement display control instrument is arranged on now spiral case boss, contactless angular transducer is arranged on servomotor power transmission shaft, peace
Dress, wiring, debugging are all very convenient, without laying cable again, can accurately react unit guide vane opening, improve unit
The success rate and the smooth implementation rate of automatic flow open, shut down, it is ensured that unit safety stable operation.Using the sleeping of the present embodiment
Formula water turbine set feedback of guide blade position device, unit is opened, stopped 85 times, and feedback of guide blade position is accurate, does not occur personnel's adjustment
Phenomenon, effect is notable.
Claims (5)
1. a kind of horizontal hydraulic unit feedback of guide blade position device, it is characterised in that the horizontal hydraulic unit is anti-with gate positing
Presenting device includes magnetosensitive non-contact angle sensor (1), measurement display control instrument (2), 3 support members (3) and shaft coupling
(5), support member (3) constitutes integrative-structure by the first connecting plate (3-1), middle part strip plate (3-2) and the second connecting plate (3-3),
It is provided with the first connecting plate (3-1) in bolt hole (3-4), the both sides plate face of middle part strip plate (3-2) and the first company is set respectively
Fishplate bar (3-1) and the second connecting plate (3-3), the first connecting plate (3-1) and the second connecting plate (3-3) are separately positioned on middle part strip
On two broadside end faces of plate (3-2), and the first connecting plate (3-1) and the second connecting plate (3-3) respectively with middle part strip plate (3-
2) perpendicular, the second connecting plate (3-3) of each support member (3) connects with the annular flange (4-1) of speed regulator rotary shaft axle sleeve (4)
Touch and be arranged on annular flange (4-1) anchor ring, 3 support members (3) are evenly arranged in annular flange (4-1)；
The shell of magnetosensitive non-contact angle sensor (1) is cylindrical shape, is extended with magnetosensitive non-contact angle sensor (1)
Circular bulkheads (1-2) are provided with the shell surface of rotating shaft (1-1), circumferentially (3) bar circular arc is evenly arranged with along circular bulkheads (1-2)
Shape through hole (1-3), 3 bolts, which are each passed through (3) bar arc-shaped through hole (1-3), makes magnetosensitive non-contact angle sensor (1) solid
On the first connecting plate (3-1) for being scheduled on 3 support members (3), connecting rod (6) is welded with the end face of servomotor power transmission shaft (7),
The center line of the center line of connecting rod (6) and servomotor power transmission shaft (7) coincides, magnetosensitive non-contact angle sensor (1)
It is connected between rotating shaft (1-1) and connecting rod (6) by shaft coupling (5), magnetosensitive non-contact angle sensor (1) passes through control line
It is connected with measurement display control instrument (2).
2. a kind of horizontal hydraulic unit feedback of guide blade position device according to claim 1, it is characterised in that measurement is aobvious
Show that controller (2) is arranged on the spiral case boss of horizontal water turbine.
3. a kind of horizontal hydraulic unit feedback of guide blade position device according to claim 2, it is characterised in that measurement is aobvious
Show that controller (2) is arranged on by screw on the spiral case boss of horizontal water turbine.
4. a kind of horizontal hydraulic unit feedback of guide blade position device according to claim 1, it is characterised in that in support
Screw hole (3-5) is provided with the second connecting plate (3-3) of part (3), support member (3) is by screw connection in annular flange (4-
1) on anchor ring.
5. a kind of horizontal hydraulic unit feedback of guide blade position device according to claim 1, it is characterised in that connecting rod
(6) a diameter of 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710681086.2A CN107255061A (en) | 2017-08-10 | 2017-08-10 | A kind of horizontal hydraulic unit feedback of guide blade position device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710681086.2A CN107255061A (en) | 2017-08-10 | 2017-08-10 | A kind of horizontal hydraulic unit feedback of guide blade position device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107255061A true CN107255061A (en) | 2017-10-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710681086.2A Pending CN107255061A (en) | 2017-08-10 | 2017-08-10 | A kind of horizontal hydraulic unit feedback of guide blade position device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107255061A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751174A (en) * | 2019-03-08 | 2019-05-14 | 国家电网有限公司 | A kind of hydraulic turbine list guide vane servomotor detection system |
| CN111029201A (en) * | 2019-11-26 | 2020-04-17 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | Main command control switch for hydraulic turbine speed regulator, hydraulic turbine speed regulator and hydraulic turbine |
| CN111322193A (en) * | 2020-03-23 | 2020-06-23 | 西安理工大学 | Device and method for measuring opening degree of guide vane of water turbine |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506910A (en) * | 2011-11-10 | 2012-06-20 | 李惠远 | Pulse angle sensor |
| CN103590960A (en) * | 2013-11-30 | 2014-02-19 | 国家电网公司 | Oil head feedback device applied to axial flow movable propeller turbine and mounting technology of oil head feedback device |
| CN103711634A (en) * | 2013-12-29 | 2014-04-09 | 国家电网公司 | Magnetic ring stroke sensing type water turbine blade stroke feedback device |
| CN204003236U (en) * | 2014-03-31 | 2014-12-10 | 宋雨航 | Support for guide vanes of water turbine stroke measurment sensor |
| CN204783445U (en) * | 2015-05-29 | 2015-11-18 | 广西桂冠开投电力有限责任公司 | Automatic control adjusting device of hydraulic turbine water distributor |
| CN207131527U (en) * | 2017-08-10 | 2018-03-23 | 黑龙江省电力有限公司牡丹江水力发电总厂 | A kind of horizontal hydraulic unit feedback of guide blade position device |
-
2017
- 2017-08-10 CN CN201710681086.2A patent/CN107255061A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506910A (en) * | 2011-11-10 | 2012-06-20 | 李惠远 | Pulse angle sensor |
| CN103590960A (en) * | 2013-11-30 | 2014-02-19 | 国家电网公司 | Oil head feedback device applied to axial flow movable propeller turbine and mounting technology of oil head feedback device |
| CN103711634A (en) * | 2013-12-29 | 2014-04-09 | 国家电网公司 | Magnetic ring stroke sensing type water turbine blade stroke feedback device |
| CN204003236U (en) * | 2014-03-31 | 2014-12-10 | 宋雨航 | Support for guide vanes of water turbine stroke measurment sensor |
| CN204783445U (en) * | 2015-05-29 | 2015-11-18 | 广西桂冠开投电力有限责任公司 | Automatic control adjusting device of hydraulic turbine water distributor |
| CN207131527U (en) * | 2017-08-10 | 2018-03-23 | 黑龙江省电力有限公司牡丹江水力发电总厂 | A kind of horizontal hydraulic unit feedback of guide blade position device |
Non-Patent Citations (1)
| Title |
|---|
| 刘吉强;: "角度传感器在水电厂中的应用探析" * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751174A (en) * | 2019-03-08 | 2019-05-14 | 国家电网有限公司 | A kind of hydraulic turbine list guide vane servomotor detection system |
| CN111029201A (en) * | 2019-11-26 | 2020-04-17 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | Main command control switch for hydraulic turbine speed regulator, hydraulic turbine speed regulator and hydraulic turbine |
| CN111029201B (en) * | 2019-11-26 | 2021-10-01 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | Main command control switch for hydraulic turbine speed regulator, hydraulic turbine speed regulator and hydraulic turbine |
| CN111322193A (en) * | 2020-03-23 | 2020-06-23 | 西安理工大学 | Device and method for measuring opening degree of guide vane of water turbine |
| 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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Application publication date: 20171017 |