CN208486976U - A kind of guide vanes of water turbine card resistance overload intelligent protection system - Google Patents
A kind of guide vanes of water turbine card resistance overload intelligent protection system Download PDFInfo
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- CN208486976U CN208486976U CN201820252692.2U CN201820252692U CN208486976U CN 208486976 U CN208486976 U CN 208486976U CN 201820252692 U CN201820252692 U CN 201820252692U CN 208486976 U CN208486976 U CN 208486976U
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- 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
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Abstract
The utility model relates to hydraulic turbine field, specially a kind of guide vanes of water turbine card resistance overloads intelligent protection system.The critical value of connecting plate institute stress when by calculating confirmation unit overload, and set the signal that a compressor emergency shutdown is fed back when strain measurement to institute's stress is more than critical value；Governor controls compressor emergency shutdown；Including turbine proper, top cover, guide vane group, wherein: troubleshooting mouth (1) is set on the inside of top cover, fitting setting foil gauge (2) on the inner wall of troubleshooting mouth, foil gauge is connected to governor control machine (3), the governor control machine includes mechanical master control body (101) and governor exchange IC chip, and hydraulic pressure monitoring module, voltage and current acquisition control module, monitor speed module, flow-control module, flow are provided in governor exchange IC chip and checks module, memory module, Communication module.
Description
Technical field
The utility model relates to hydraulic turbine field, specially a kind of guide vanes of water turbine card resistance overloads intelligent protection system.
Background technique
It is generallyd use in guide vane protective device in reaction turbine and break pin is set between guide vane lever and connecting plate.Work as guide vane
Between occur card resistance phenomenon when, break pin present position can occur because overload and cut.Break pin signalling means in break pin
A signal can be fed back when break pin is cut, control governor makes compressor emergency shutdown inspection.Maintenance personnel is after compressor emergency shutdown
Inspection is made to compressor emergency shutdown reason, excludes unit card resistance phenomenon, replaces break pin.Unit restarting operation.
Summary of the invention
The purpose of the utility model is to provide having a kind of guide vanes of water turbine card resistance overload intelligent protection system, by calculating really
The critical value of connecting plate institute stress when recognizing unit overload, and set and feed back one when strain measurement to institute's stress is more than critical value
The signal of compressor emergency shutdown；Governor controls compressor emergency shutdown；Card resistance phenomenon between exclusion guide vane, unit turn back on.
The utility model is achieved through the following technical solutions: a kind of guide vanes of water turbine card resistance overload intelligent protection system
System, including turbine proper, top cover, guide vane group, in which: troubleshooting mouth is set on the inside of top cover, is bonded setting on the inner wall of troubleshooting mouth
Foil gauge, foil gauge are connected to governor control machine, and the governor control machine includes mechanical master control body and governor exchange IC
Chip, mechanical master control body setting switch master control, instrument master control, Unidirectional solenoid valve master control, bidirectional electromagnetic valve master control, switch master control are logical
It crosses data loop to connect with current supply circuit and control connection by governor exchange IC chip, switch master control input circuit is connected to letter
Number frequency converter, signal frequency conversion device have several output loops, are separately connected switch master control, Unidirectional solenoid valve master control, bi-directional electromagnetic
Valve master control, instrument master control connect Unidirectional solenoid valve master control, bidirectional electromagnetic valve master control, switch master control by data collection line.Fork
State modulator is accurate, and inputs and solve respectively according to Adaptive System of Water-Turbine Engine model, is able to satisfy various control parameter and fork
Condition, and frequency modulation is carried out, the stabilization implementation method of frequency modulation is simple, precision is high, and the one in the switch master control also is at itself
Electron plate on be arranged nozzle needle switches part.Nozzle needle switch is used to control the related data of nozzle needle pipe, and controls to leading
The associated water stream amount of leaf.The bidirectional electromagnetic valve master control setting bidirectional electromagnetic valve and bidirectional throttling valve use cascaded structure；Unidirectionally
Unidirectional solenoid valve is arranged in solenoid valve master control and one-way throttle valve uses cascaded structure.
Hydraulic pressure monitoring module, voltage and current acquisition control module, monitor speed mould are provided in governor exchange IC chip
Block, flow-control module, flow check that module, memory module, Communication module, monitor speed module connect hydraulic turbine main body
Main shaft on the speed probe that is arranged, water pressure monitoring module connects foil gauge, voltage and current acquisition module and turbine proper
Electricity output circuit connection, flow-control module are connected with the flow control valve of membranous cochlea head end, and flow detection module and flow are sent
Become device connection；The foil gauge includes sense film sheet metal, pressure inductor, signal frequency conversion device, on sense film sheet metal uniformly
Be square and arrange several pressure inductors, pressure inductor is connected to foil gauge control single chip computer by chip track
On signal frequency conversion device；The governor controls machine, the signal frequency conversion device that governor exchange IC chip passes through monitoring line and foil gauge
Signal output is connected with each other.
As the preferred pressure inductor include at least first resistor, second resistance, 3rd resistor, bilateral diode,
Bridge rectifier, first resistor, second resistance are in parallel, and bridge rectifier is arranged in 3rd resistor rear, and bridge rectifier is connected to
The pressure sensitivity of most surface setting acquires electrically susceptible head, and the input circuit that pressure sensitivity acquires electrically susceptible head is connected to bridge rectifier, passes through bridge-type
Rectifier connects 3rd resistor, and 3rd resistor input circuit connects first resistor, and first resistor and second resistance are in parallel, the second electricity
Resistance output loop in parallel is connected to bridge rectifier and is connected to 3rd resistor, and first resistor output loop is connected to two-way two
Pole pipe is connected to pressure sensitivity by bilateral diode and acquires electrically susceptible head, and the output loop and first resistor of the signal frequency conversion device are defeated
Circuit is connected out, and the input circuit of second resistance is connected with signal frequency conversion device.Two resistance are monitored simultaneously and by electricity in parallel
Resistance carries out the adjustment and calibration of electric induction, adapt to it is small also adapt to it is big so that precision and fitness are very strong, more
It is suitble to the measurement of the hydraulic turbine, the bilateral diode for being provided with insurance on electrically susceptible head is acquired in pressure sensitivity, sensitive pressure sensitivity is protected to adopt
Collect electrically susceptible head, when especially overloading, once insurance access is entire to take turns unit also emergent stopping also by " destruction " herein,
It is no longer tuned up or is carried out to exclude automatic.
It include switch master control, instrument master control, Unidirectional solenoid valve master control, bidirectional electromagnetic valve as the preferably described mechanical master control body
Master control, switch master control are connected with current supply circuit by data loop and are controlled by governor exchange IC chip and connected, and master control is switched
Input circuit is connected to signal frequency conversion device, and signal frequency conversion device has several output loops, is separately connected switch master control, unidirectional electromagnetism
Valve master control, bidirectional electromagnetic valve master control, instrument master control are total by data collection line connection Unidirectional solenoid valve master control, bidirectional electromagnetic valve
Control, switch master control.The state modulator that diverges is accurate, and inputs and solve respectively according to Adaptive System of Water-Turbine Engine model, is able to satisfy more
Kind control parameter and bifurcation condition, and frequency modulation is carried out, the stabilization implementation method of frequency modulation is simple, precision is high.
As further including that nozzle needle switchs in the preferred switch master control.
It include bidirectional electromagnetic valve and bidirectional throttling valve as the preferred bidirectional electromagnetic valve master control；Unidirectional solenoid valve master control packet
Include Unidirectional solenoid valve and one-way throttle valve.
The beneficial effects of the utility model are: strain measurement can monitor and instead immediately when being more than critical value to institute's stress
It should be made to shut down entire water turbine units to hydraulic turbine master control computer, and cooperate governor control machine carry out calibration and it is right
Than avoiding wrong timing, avoiding reaction not in time, avoid resistance peak, also provide the data of low hydraulic pressure strain；Realize entire adjust
Fast device control unit and foil gauge tuned up after be not hard stop but take it is corresponding slow down and self drag reduction, for example subtract
Few water flow and hydraulic pressure, to reduce and exclude card resistance phenomenon between the guide vane of borderline risk, or straining production requirement can be
Continue to generate electricity in the case where reducing flowing water, hydraulic pressure, electric output, until maintenance starts, does not need unit weight when urgent
New booting, also eliminates break pin, eliminates replacement this maintenance step of break pin, thus saves to power station repair and maintenance
Plenty of time also greatly enhances safety.
Detailed description of the invention
Fig. 1 is water-turbine top cover bottom view.
Fig. 2 governor controls machine module map.
Fig. 3 governor exchange IC chip circuit structure diagram.
Fig. 4 controlled strain pressure stabilizing figure.
Fig. 5 machinery master control body connection figure.
Specific embodiment
Below by embodiment, in conjunction with attached drawing, preferred specific description is used as to the technical solution of the utility model:
As shown in Figure 1-3, a kind of guide vanes of water turbine card resistance overloads intelligent protection system, including turbine proper, top cover, lead
Leaf group, these are repeated no more for the prior art, on the inside of one side of wherein top cover one cavity of setting as troubleshooting mouth (1), this
A troubleshooting mouth can be extended in entire top cover of hydraulic turbine set, simultaneously as foil gauge is that soft I can be always
The positions such as entire draft tube, screwed pipe are routed to, and troubleshooting mouth multiple can be arranged, fitting setting strain on the inner wall of troubleshooting mouth
Piece (2), foil gauge are connected to governor control machine (3), and the governor control machine includes mechanical master control body (101) and governor
Exchange IC chip is provided with hydraulic pressure monitoring module, voltage and current acquisition control module, monitor speed in governor exchange IC chip
Module, flow-control module, flow check that module, memory module, Communication module, monitor speed module connect water wheels owner
The speed probe being arranged on the main shaft of body, water pressure monitoring module connect foil gauge, voltage and current acquisition module and hydraulic turbine sheet
The connection of body electricity output circuit, flow-control module are connected with the flow control valve of membranous cochlea head end, flow detection module and flow
Converter connection；The foil gauge includes sense film sheet metal (4), pressure inductor (5), signal frequency conversion device (6), sense film gold
Category on piece, which is uniformly square, arranges several pressure inductors, and pressure inductor is connected to foil gauge control by chip track
On the signal frequency conversion device of single-chip microcontroller processed；The governor controls machine, and governor exchange IC chip passes through monitoring line (8) and foil gauge
Signal frequency conversion device signal output be connected with each other；The pressure inductor is arranged three, is first resistor (9), second respectively
Resistance (10), 3rd resistor (11), bilateral diode (14), bridge rectifier (13), first resistor (9), second resistance (10)
Bridge rectifier is arranged in parallel connection, 3rd resistor (11) rear, and the pressure sensitivity acquisition that bridge rectifier is connected to most surface setting is electrically susceptible
Head (12), the input circuit that pressure sensitivity acquires electrically susceptible head are connected to bridge rectifier, connect 3rd resistor by bridge rectifier, the
Three resistance input circuits connect first resistor, and first resistor and second resistance are in parallel, the output loop connection of second resistance parallel connection
To bridge rectifier and it is connected to 3rd resistor, first resistor output loop is connected to bilateral diode, passes through bilateral diode
It is connected to pressure sensitivity and acquires electrically susceptible head, the output loop of the signal frequency conversion device is connected with first resistor output loop, second resistance
Input circuit connected with signal frequency conversion device.Monitor simultaneously two resistance and by resistance in parallel carry out electric induction adjustment and
Calibration, adapt to it is small also adapt to big so that precision and fitness are very strong, be more suitable the measurement of the hydraulic turbine,
Pressure sensitivity acquires the bilateral diode that insurance is provided on electrically susceptible head, protects sensitive pressure sensitivity to acquire electrically susceptible head, especially overloads
When, once insured herein also by " destruction ", it is entire to take turns unit also emergent stopping, it is no longer tuned up or is carried out to exclude certainly
It is dynamic.
Specific embodiment are as follows: the pressure sensitivity of the pressure inductor on foil gauge acquire electrically susceptible head water by the stress of hydraulic pressure come
Say that pressure becomes voltage data, voltage data is converted into detailed pressure sensitivity information data by signal frequency conversion by several resistance loops
Device is collected, and becomes singlechip chip data, is collected to the switch master control under the control of governor exchange IC chip, and feed back to tune
Water pressure monitoring module in fast device exchange IC chip, governor exchange IC chip are opened according to the pid parameter table control being set
Master control is closed, by the feedback and comparison of data, relevant unidirectional, two-way, throttling is automatically controlled and solenoid valve is relevant to control
Water flow, once data are not right, monitoring and reacting immediately shuts down it by entire water turbine units to hydraulic turbine master control computer, and
And cooperation can be and manually be calibrated and compared depending on instrument, avoid wrong timing, avoids reaction as shown in Figure 4 not in time, avoids
Resistance peak also provides the data of low hydraulic pressure strain；Realizing after entire governor control unit and foil gauge are tuned up is not
Hard stop but take it is corresponding slow down and self drag reduction, for example reduce water flow and hydraulic pressure, faced to reduce and exclude
Card resistance phenomenon between the guide vane of boundary's danger, or strain production requirement can continue in the case where reducing flowing water, hydraulic pressure, electric output
Power generation, until maintenance starts.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (5)
1. a kind of guide vanes of water turbine card resistance overloads intelligent protection system, including turbine proper, top cover, guide vane group, it is characterized in that:
Troubleshooting mouth (1) is set on the inside of top cover, fitting setting foil gauge (2), foil gauge are connected to governor control on the inner wall of troubleshooting mouth
Machine (3), the governor control machine include mechanical master control body (101) and governor exchange IC chip, governor exchange IC chip
On be provided with hydraulic pressure monitoring module, voltage and current acquisition control module, monitor speed module, flow-control module, flow inspection
Module, memory module, Communication module, the revolution speed sensing that is arranged on the main shaft of monitor speed module connection hydraulic turbine main body
Device, water pressure monitoring module connect foil gauge, and voltage and current acquisition module is connected with turbine proper electricity output circuit, flow control
Module is connected with the flow control valve of membranous cochlea head end, and flow detection module is connected with flow converter；The foil gauge includes
Sense film sheet metal (4), pressure inductor (5), signal frequency conversion device (6), if being uniformly square arrangement on sense film sheet metal
The strong inductor of dry-pressing, pressure inductor are connected on the signal frequency conversion device of foil gauge control single chip computer by chip track；Institute
State governor control machine, the signal frequency conversion device signal output phase that governor exchange IC chip passes through monitoring line (8) and foil gauge
It connects.
2. a kind of guide vanes of water turbine card resistance according to claim 1 overloads intelligent protection system, it is characterized in that: the pressure
Inductor includes at least first resistor (9), second resistance (10), 3rd resistor (11), bilateral diode (14), bridge rectifier
(13), first resistor (9), second resistance (10) are in parallel, and bridge rectifier is arranged in 3rd resistor (11) rear, and bridge rectifier connects
The pressure sensitivity for being connected to most surface setting acquires electrically susceptible head (12), and the input circuit that pressure sensitivity acquires electrically susceptible head is connected to bridge rectifier,
3rd resistor is connected by bridge rectifier, 3rd resistor input circuit connects first resistor, and first resistor and second resistance are simultaneously
Connection, the output loop of second resistance parallel connection are connected to bridge rectifier and are connected to 3rd resistor, and first resistor output loop connects
Be connected to bilateral diode, pressure sensitivity be connected to by bilateral diode and acquires electrically susceptible head, the output loop of the signal frequency conversion device and
First resistor output loop is connected, and the input circuit of second resistance is connected with signal frequency conversion device.
3. a kind of guide vanes of water turbine card resistance according to claim 1 overloads intelligent protection system, it is characterized in that: the machinery
Master control body includes switch master control (15), instrument master control (16), Unidirectional solenoid valve master control (17), bidirectional electromagnetic valve master control (18), is opened
It closes master control to connect by data loop with current supply circuit and control connection by governor exchange IC chip, switchs master control input circuit
It is connected to signal frequency conversion device, signal frequency conversion device there are several output loops, and it is total to be separately connected switch master control (15), Unidirectional solenoid valve
(17), bidirectional electromagnetic valve master control (18) are controlled, instrument master control (16) passes through data collection line connection Unidirectional solenoid valve master control (17), double
To solenoid valve master control (18), switch master control (15).
4. a kind of guide vanes of water turbine card resistance according to claim 3 overloads intelligent protection system, it is characterized in that: the switch
It further include nozzle needle switch in master control (15).
5. a kind of guide vanes of water turbine card resistance according to claim 3 overloads intelligent protection system, it is characterized in that: described two-way
Solenoid valve master control includes bidirectional electromagnetic valve and bidirectional throttling valve；Unidirectional solenoid valve master control includes Unidirectional solenoid valve and one-way throttle
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820252692.2U CN208486976U (en) | 2018-02-12 | 2018-02-12 | A kind of guide vanes of water turbine card resistance overload intelligent protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820252692.2U CN208486976U (en) | 2018-02-12 | 2018-02-12 | A kind of guide vanes of water turbine card resistance overload intelligent protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208486976U true CN208486976U (en) | 2019-02-12 |
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ID=65255663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820252692.2U Active CN208486976U (en) | 2018-02-12 | 2018-02-12 | A kind of guide vanes of water turbine card resistance overload intelligent protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208486976U (en) |
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2018
- 2018-02-12 CN CN201820252692.2U patent/CN208486976U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An intelligent protection system for hydraulic turbine guide vane blocking overload Effective date of registration: 20220714 Granted publication date: 20190212 Pledgee: Bank of Jinhua Limited by Share Ltd. science and Technology Branch Pledgor: ZHEJIANG JINLUN ELECTROMECHANICAL Co.,Ltd. Registration number: Y2022980010455 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |