CN203847320U - Electron-type guide vane master controller using single chip microcomputer and electric feedback - Google Patents
Electron-type guide vane master controller using single chip microcomputer and electric feedback Download PDFInfo
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- CN203847320U CN203847320U CN201320690330.9U CN201320690330U CN203847320U CN 203847320 U CN203847320 U CN 203847320U CN 201320690330 U CN201320690330 U CN 201320690330U CN 203847320 U CN203847320 U CN 203847320U
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- 238000004891 communication Methods 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000009977 dual effect Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000012790 confirmation Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008713 feedback mechanism Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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 discloses an electron-type guide vane master controller using a single chip microcomputer and an electric feedback. The electron-type guide vane master controller is formed by a position changing and sending device and a master controller body. The position changing and sending device is installed at a water turbine guide vane servomotor, is used for generating position signals of the water turbine guide vane servomotor, and is connected with the master controller body which is connected to a computer monitoring system. The master controller body is mainly formed by a main control single chip microcomputer, a keyboard, a display single chip microcomputer, an AC/DC double-power loop, an analog input loop, an analog output loop, a communication port, a relay contact switch output loop, a key disposing circuit, a digital pipe and an LED display loop. According to the utility model, main and auxiliary single chip microcomputers work cooperatively, i.e., the main single chip microcomputer is in charge of data sampling, storing, processing and action result output, and the auxiliary single chip microcomputer is in charge of digital pipe display, LED lamp indication, keyboard input, and cooperative work such as parameter arrangement, display switching and information search.
Description
Technical field
The utility model relates to a kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback, belongs to water generating technical field.
Background technique
Water turbine is the visual plant of hydroelectric power station; bearing the vital task that water can be converted to mechanical energy; the size of guide vane opening is directly connected to water turbine output power; it is the Important Parameters of the states such as the start of judgement unit, shutdown, generating, excess load; and master controller is mainly used in reflecting guide vanes of water turbine aperture size; as stator whether complete shut-down, whether in no-load opening, whether surpass aperture restriction etc., be the Important Parameters of Power Station Monitored Control System judgement hydraulic generator unit state and fault.
At present, what use in a large number is the master controller forming with machine feedback, rotating cam, position switch, complicated mechanical lever (or wire rope) formula feedback mechanism need to be installed at guide vane servomotor place, the rotation of feedback mechanism driving cam, at cam diverse location, touch-type switch is installed, reflection guide vane opening position, the switching position.This device major defect is: reaction lever or wire rope are installed more difficult, be secondly stroke dead band cause greatly control accuracy low, adjust difficulty; Cam touching contact bad connection rate of fault is high in addition, affects judgement and normal enforcement of Control of Power Plant flow process; And when feedback mechanism is longer, easily produce time delay and the hysteresis of signal.
And adopt programmable controller PLC to form collection, control and relay output, adopt versatile touch screen (or text display) to show and parameters, this scheme volume is larger, group screen inconvenience, and cost is higher, owing to adopting the universal product of other manufacturers, is subject to its product variations, stops production and limit, be difficult for forming standard product, the maintenance of product and use are made troubles.
Along with the raising of power station automation level and computer control automation, require that control accuracy highly, convenient is adjusted, the non-maintaining main control apparatus that makes, to meet the requirements at the higher level of power station " unattended, few man on duty ".
Model utility content
In order to overcome the on-the-spot complexity of installing of existing master controller, control accuracy is low, adjustment is difficult, safeguard the shortcomings such as inconvenient, rate of fault is higher, the utility model provides a kind of single chip microcomputer and electric transducer elements of adopting to form novel electronic type stator master controller, the cammingly contact switch that replaces current water power plant band stator machine feedback, improve Automation of Hydropower Station element integral level, meet the requirement of hydropower station at present " unattended, few man on duty ", ensure unit safety.
The utility model completes by the following technical solutions:
A kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback, by position transmitter and master controller, formed, described position transmitter is arranged on guide vane servomotor place, for generation of guide vane servomotor position signal, described position transmitter is connected with master controller, described master controller access computer supervisory control system; Described master controller is mainly comprised of main control singlechip, keyboard and demonstration single-chip microcomputer, alternating direct-current dual power supply loop, analog input loop, analog output loop, communication interface, relay tip switch output loop, keyboard processing circuit, nixie tube and LED show circuit; Described main control singlechip is respectively with keyboard and show single-chip microcomputer, relay tip switch output loop, and analog input loop, analog output loop is connected with communication interface, carries out mutual communication; Described keyboard and demonstration single-chip microcomputer are connected with nixie tube and LED show circuit with keyboard processing circuit respectively, carry out mutual communication; Described position transmitter is connected with the analog input loop in master controller; Described alternating direct-current dual power supply loop is connected with AC and DC two-way power supply.
Aforesaid position transmitter can adopt boom guy type position transmitter or magnetostriction type position transmitter.
Aforesaid communication interface adopts RS232 or RS485 asynchronous serial interface, for carrying out communication with external smart equipment.
There is two paths in aforesaid analog input loop; described two paths is by connected successively current-voltage conversion circuit; input voltage inverter circuit; voltage gain Circuit tuning; second-order active filter circuit; diode clamping protective circuit forms, and the output terminal of described two paths is connected with AD modulus conversion chip MAX186, described AD modulus conversion chip MAX186 access main control singlechip.
Aforesaid main control singlechip is provided with DA analog-digital chip TLC5620, described analog output loop is connected with DA analog-digital chip TLC5620, there is two paths in described analog output loop, and described two paths forms by interconnective voltage-current converter circuit and matrix current adjustment circuit.
Aforesaid main control singlechip is provided with 78E58B chip, relay tip switch output loop is connected with the IO mouth of 78E58B chip, described relay tip switch output loop You10 road gate positing relay passage and No. 1 alarming relay passage, described 10 road gate positing relay passages form by interconnective photo coupler and output relay, and the output terminal of described relay all accesses computer supervisory control system.
Aforesaid keyboard processing circuit comprises button is set, and switching key increases key, reduces key and 5 kinds of button inputting circuits of confirmation key.
By adopting technique scheme, the beneficial effects of the utility model are: adopt single chip microcomputer and electric transducer elements to form novel electronic type stator master controller, only need be at guide vane servomotor place mounting point transmitter, the master controller of developing can be arranged on monitoring panel cashier's office in a shop, do not need to introduce the complicated machine feedback such as lever or wire rope, cable connection also can be saved a lot, has so just greatly simplified layout and the structure of water turbine master controller; Electric master controller adopts electric feedback, measurement and output in addition, parameters adopts keyboard input, solidify storage, overcome that original master controller stroke dead band causes greatly that control accuracy is low, position contact is adjusted difficulty, the shortcomings such as action connection point bad connection, have operation precision high, easy to adjust, contact reliable in action, the advantage such as non-maintaining are installed, can greatly improve Automation of Hydropower Station component level, meet the digitizing requirement of current power station computer monitoring system.
Accompanying drawing explanation
Fig. 1 is electronic type stator master controller structural representation of the present utility model;
Fig. 2 is master controller internal structure schematic diagram of the present utility model;
Fig. 3 is the utility model analog input circuit diagram;
Fig. 4 is the utility model analog output circuit diagram;
Fig. 5 is the utility model relay tip switch output loop figure;
Fig. 6 is the utility model main control singlechip workflow diagram;
Fig. 7 is the utility model keyboard and shows single-chip microcomputer workflow diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
As shown in Figure 1, the utility model is comprised of position transmitter and master controller, wherein position transmitter is arranged on guide vane servomotor place, for generation of guide vane servomotor position signal, position transmitter can adopt boom guy type or magnetostriction type position transmitter, transmitter range and servomotor stroke adapt, and generally select 4-20mA output; Position transmitter is connected with master controller, master controller access computer supervisory control system.
As shown in Figure 2, master controller is mainly comprised of main control singlechip, keyboard and demonstration single-chip microcomputer, alternating direct-current dual power supply loop, analog input loop, analog output loop, communication interface, relay tip switch output loop, keyboard processing circuit, nixie tube and LED show circuit; Wherein main control singlechip is respectively with keyboard and show single-chip microcomputer, relay tip switch output loop, and analog input loop, analog output loop is connected with communication interface, carries out mutual communication; Keyboard and demonstration single-chip microcomputer are connected with nixie tube and LED show circuit with keyboard processing circuit respectively, carry out mutual communication; Position transmitter is connected with the analog input loop in master controller; Alternating direct-current dual power supply loop is connected with AC and DC two-way power supply.Wherein communication interface adopts RS232 or RS485 asynchronous serial interface, for carrying out communication with external smart equipment; There are AC220V and the DC220V input of supplying power with double circuit, current sinking: 0.5A in alternating direct-current dual power supply loop.
Main working process of the present utility model is: the position transmitter at guide vane servomotor place, its output signal reflection guide vane opening size, signal is received the analog input loop of master controller, through voltage current transformation, filtering is processed, after analog digital conversion, enter main control singlechip, main control singlechip will be analyzed stator digital signal, convert and process, obtain actual guide vane opening value, by keyboard and demonstration single-chip microcomputer, process, rely on external keyboard and nixie tube and LED show circuit to show, and gate positing signal is converted into corresponding relay group action (or involution) value, report supervisory system, thereby complete the fundamental function of stator master controller.
As shown in Figure 3, simulated measurement input circuit of the present utility model has two paths, two paths is by connected successively current-voltage conversion circuit, input voltage inverter circuit, voltage gain Circuit tuning by, second-order active filter circuit, diode clamping protective circuit forms, concrete, the current-voltage conversion circuit of passage 1 is realized by resistance R 37, input voltage inverter circuit is by amplifier U18-A, resistance R 23 and resistance R 21 form, voltage gain Circuit tuning is by potentiometer W1, resistance R 25 and amplifier U18-B form, simultaneously, amplifier U18-A and capacitor C 5, amplifier U18-B and capacitor C 6 form second-order active filter circuit, diode clamping protective circuit is comprised of diode D1 and diode D2, the current-voltage conversion circuit of passage 2 is realized by resistance R 38, input voltage inverter circuit is by amplifier U19-A, resistance R 31 and resistance R 29 form, voltage gain Circuit tuning is by potentiometer W2, resistance R 33 and amplifier U19-B form, meanwhile, and amplifier U19-A and capacitor C 7, amplifier U19-B and capacitor C 8 form second-order active filter circuit, and diode clamping protective circuit is comprised of diode D3 and diode D4, simulated measurement input circuit is mainly used in 4 ~ 20mA electric current or the input of 0 ~ 10V voltage signal, during electric current input, need short circuit connection sheet JP1 or JP2, analogue signal after treatment, enter 12 AD modulus conversion chip MAX186(U22) gather, then the main control singlechip of making a gift to someone and being connected with AD modulus conversion chip MAX186.
As shown in Figure 4, main control singlechip is provided with DA analog-digital chip TLC5620, analog output loop is connected with DA analog-digital chip TLC5620, DA analog-digital chip TLC5620(U21) convert the guide vane opening numerical information of single-chip microcomputer output to two-way analog voltage amount, two paths forms by voltage-current converter circuit and matrix current adjustment circuit, wherein, the voltage-current converter circuit of passage 1 is comprised of amplifier U20-A and triode T1, convert voltage signal to current signal, then the electric current of adjusting in different loads situation by potentiometer W3 is exported; The voltage-current converter circuit of passage 2 is comprised of amplifier U20-B and triode T2, converts voltage signal to current signal, then the electric current of adjusting in different loads situation by potentiometer W4 is exported.
As shown in Figure 5, main control singlechip is provided with 78E58B chip, relay tip switch output loop is connected with the IO mouth of 78E58B chip, relay tip switch output loop You10 road gate positing relay passage and No. 1 alarming relay passage, 10 road gate positing relay passages form by photo coupler and output relay, the output terminal access computer supervisory control system of relay.Main control singlechip 78E58B(U1) the IO mouth of chip (P0, P1) directly produces digital signal (RELAY1, RELAY2 ... .RELAY10, in Fig. 5, only represented relay 1 to 5, all the other are identical), control photo coupler U7, U8 ... ..U16 break-make, thus output relay 1 controlled to action and the involution of output relay 10.Main control singlechip is converted into gate positing signal corresponding relay group action (or involution) value or alarm signal again, reports supervisory system, thereby completes the fundamental function of stator master controller.
As shown in Figure 6, after stator master controller of the present utility model powers on, first main control singlechip carries out the initialization of single-chip microcomputer internal register, clock, IO mouth, and whether the parameters that judges storage inside is reasonable, if out of question, carry out the digital-to-analog conversion of guide vane opening analog amount, sampling, data filtering, conversion, rationally effective coverage judgement, if data processing is normal, carry out measured value and settings comparison, drive gate positing relay and tutorial light action or involution; If data exception, drives alarming relay action and indication.
As shown in Figure 7, after stator master controller of the present utility model powers on, first keyboard and demonstration single-chip microcomputer carry out single-chip microcomputer internal register, clock, the initialization of IO mouth, and whether the parameters of storage inside is reasonable, then check and main control singlechip between data communication, if normally show initialization default information (guide vane opening), then check that whether key is set is pressed, have and enter setting procedure, by increasing, reduce, confirmation key comes input parameter storage, then check and whether have switch key to press, have and show that information is at stroke, AD sampled value, between percentage value, switch, if with main control singlechip communication abnormality, show communication failure and report to the police.
The utility model is by major-minor double mcu collaborative work, and host scm is responsible for data sampling, and output action result is processed in storage; Assistant SCM is responsible for nixie tube demonstration, the indication of LED lamp, keyboard input etc., between two single-chip microcomputers, by serial communication, carrys out swap data, completes parameter setting, shows the collaborative works such as switching, information inquiry.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, do not departing within the scope of technical solutions of the utility model, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (7)
1. an electronic type stator master controller that adopts single chip microcomputer and electric feedback, it is characterized in that, by position transmitter and master controller, formed, described position transmitter is arranged on guide vane servomotor place, for generation of guide vane servomotor position signal, described position transmitter is connected with master controller, described master controller access computer supervisory control system; Described master controller is mainly comprised of main control singlechip, keyboard and demonstration single-chip microcomputer, alternating direct-current dual power supply loop, analog input loop, analog output loop, communication interface, relay tip switch output loop, keyboard processing circuit, nixie tube and LED show circuit; Described main control singlechip is respectively with keyboard and show single-chip microcomputer, relay tip switch output loop, and analog input loop, analog output loop is connected with communication interface, carries out mutual communication; Described keyboard and demonstration single-chip microcomputer are connected with nixie tube and LED show circuit with keyboard processing circuit respectively, carry out mutual communication; Described position transmitter is connected with the analog input loop in master controller; Described alternating direct-current dual power supply loop is connected with AC and DC two-way power supply.
2. a kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback according to claim 1, is characterized in that, described position transmitter can adopt boom guy type position transmitter or magnetostriction type position transmitter.
3. a kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback according to claim 1, is characterized in that, described communication interface adopts RS232 or RS485 asynchronous serial interface, for carrying out communication with external smart equipment.
4. a kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback according to claim 1; it is characterized in that; there is two paths in described analog input loop; described two paths is by connected successively current-voltage conversion circuit; input voltage inverter circuit; voltage gain Circuit tuning; second-order active filter circuit; diode clamping protective circuit forms; the output terminal of described two paths is connected with AD modulus conversion chip MAX186, described AD modulus conversion chip MAX186 access main control singlechip.
5. a kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback according to claim 4, it is characterized in that, described main control singlechip is provided with DA analog-digital chip TLC5620, described analog output loop is connected with DA analog-digital chip TLC5620, there is two paths in described analog output loop, and described two paths forms by interconnective voltage-current converter circuit and matrix current adjustment circuit.
6. a kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback according to claim 1, it is characterized in that, described main control singlechip is provided with 78E58B chip, relay tip switch output loop is connected with the IO mouth of 78E58B chip, described relay tip switch output loop You10 road gate positing relay passage and No. 1 alarming relay passage, described 10 road gate positing relay passages form by interconnective photo coupler and output relay, and the output terminal of described relay all accesses computer supervisory control system.
7. a kind of electronic type stator master controller that adopts single chip microcomputer and electric feedback according to claim 1, is characterized in that, described keyboard processing circuit comprises button is set, and switching key increases key, reduces key and 5 kinds of button inputting circuits of confirmation key.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690330.9U CN203847320U (en) | 2013-11-04 | 2013-11-04 | Electron-type guide vane master controller using single chip microcomputer and electric feedback |
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| CN201320690330.9U CN203847320U (en) | 2013-11-04 | 2013-11-04 | Electron-type guide vane master controller using single chip microcomputer and electric feedback |
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| CN203847320U true CN203847320U (en) | 2014-09-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843154A (en) * | 2016-03-18 | 2016-08-10 | 武汉聚鑫源机电工程设备有限公司 | Master controller of MT-1C type integration stepped closing valve control system |
| CN106340967A (en) * | 2016-10-20 | 2017-01-18 | 湖南长高思瑞自动化有限公司 | Smart operation apparatus and smart operation method of low-voltage generator of hydropower station |
| CN109563802A (en) * | 2016-07-28 | 2019-04-02 | Ntn株式会社 | Hydroelectric installation and electricity generation system |
-
2013
- 2013-11-04 CN CN201320690330.9U patent/CN203847320U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843154A (en) * | 2016-03-18 | 2016-08-10 | 武汉聚鑫源机电工程设备有限公司 | Master controller of MT-1C type integration stepped closing valve control system |
| CN109563802A (en) * | 2016-07-28 | 2019-04-02 | Ntn株式会社 | Hydroelectric installation and electricity generation system |
| CN106340967A (en) * | 2016-10-20 | 2017-01-18 | 湖南长高思瑞自动化有限公司 | Smart operation apparatus and smart operation method of low-voltage generator of hydropower station |
| CN106340967B (en) * | 2016-10-20 | 2019-01-15 | 湖南长高思瑞自动化有限公司 | Power station low voltage generator intelligent operation device and intelligent operation method |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20171123 Address after: High road high tech Development Zone Nanjing city Jiangsu province 210032 No. 20 Co-patentee after: STATE GRID ELECTRIC POWER Research Institute Patentee after: NARI TECHNOLOGY Co.,Ltd. Co-patentee after: State Grid Corporation of China Address before: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210003 Co-patentee before: STATE GRID ELECTRIC POWER Research Institute Patentee before: NANJING NARI Group Corp. Co-patentee before: State Grid Corporation of China |
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| TR01 | Transfer of patent right | ||
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Granted publication date: 20140924 |
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| CX01 | Expiry of patent term |