CN202745951U - Turbine instrument control system - Google Patents
Turbine instrument control system Download PDFInfo
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- CN202745951U CN202745951U CN 201220407202 CN201220407202U CN202745951U CN 202745951 U CN202745951 U CN 202745951U CN 201220407202 CN201220407202 CN 201220407202 CN 201220407202 U CN201220407202 U CN 201220407202U CN 202745951 U CN202745951 U CN 202745951U
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Abstract
The utility model provides a turbine instrument control system. The turbine instrument control system comprises a safety monitoring unit, a digital electric hydraulic control unit, an operator station, a hydraulic servo-motor controller and a distributed control unit. The turbine instrument control system further comprises an emergency trip unit. The safety monitoring unit or the distributed control unit or the digital electric hydraulic control unit can send out electric signals to the emergency trip unit when monitoring stopping signals, the emergency trip unit can achieve the two functions as follows: the emergency trip unit sends out control signals that field failure lines need return check to the distributed control unit or sends out closing signals to a main throttle valve switch and stopping signals of the hydraulic servo-motor controller to the digital electric hydraulic control unit. The turbine instrument control system integrates functions of emergency trip, safety monitoring, digital electric hydraulic control, servo controller and distributed control, reduces data collision and personnel investment, achieves an online debugging function of a unit, has the functions of two-turbine state track and interlock and can bear primary control and monitoring protection functions of a steam turbine generator unit.
Description
Technical field
The utility model relates to the turbine making field, specifically a kind of instrument control system of steam turbine.
Background technique
At present, most of steam turbine instrument control system is general on the market adopts knockdown configuration, namely needs function for monitoring, with regard to supporting safety monitoring system, needs the generator protection function, with regard to supporting emergency trip system.But these different system equipments are often from different manufacturers, and its power supply type, safety class difference need to provide multiple power sources during on-the-spot the installation, and need the commissioning staff to cooperatively interact in the debug process, could solve the uniting and adjustment work of equipment room.The selection of some equipment is diversified, even all types of equipment also can not be understood by the debugging troop of specialty, may be mutually incompatible because linking up some equipment that causes not in place, this phenomenon imported product show obvious especially.Should receive the current signal that monitors protective system output such as Distributed Control System; but the load module of some Distributed Control System can be selected feed output; if the both sides commissioning staff is unclear to the other side's functions of the equipments; do not link up again, the situation of damage equipment will occur so.The steam turbine instrument control system of this pattern has increased design difficulty and the debugging difficulty of equipment, and in unit operation early stage, power plant can drop into the commissioning staff of all devices, so that co-ordination is complicated, performance difficulty.
In addition, some occasion need to be carried out regular visit to instrument control system and whole unit in unit running process, prevents the shutdown that causes the faults such as device interior loop bad connection to cause because of aging circuit or running environment.But a lot of instrument control systems do not have on-line debugging function and two-shipper test interlocking function on the market now, therefore can not be implemented under the operating states of the units to check, fix a breakdown.
Summary of the invention
The purpose of this utility model is: a kind of steam turbine instrument control system with urgent blocking, security monitoring, digital electro-hydraulic control, servocontrol, collecting and distributing control and on-line debugging function is provided.
The technological scheme that the utility model adopts is:
A kind of steam turbine instrument control system comprises:
The security monitoring unit, the operation of monitoring Turbo-generator Set records in-site modeling amount signal and is converted into electrical signal;
The digital electro-hydraulic control unit with the operator station real-time communication, receives simultaneously on-site signal, compares with the internal preset value, draws control command and exports the oil engine controller to;
Operator station, operator station monitor all on-the-spot live signals, to oil engine controller sending controling instruction;
The oil engine controller, the two-way stroke signal that receives oil engine also is converted into electrical signal, accepts simultaneously control command that operator station sends, sends control signal to oil engine;
Collecting and distributing control unit receives the electrical signal of security monitoring unit and oil engine controller and sends it to operator station;
Also be provided with the emergency trip unit in the described system; when security monitoring unit, collecting and distributing control unit or digital electro-hydraulic control unit monitor stopping signal; send electrical signal to the emergency trip unit; following two kinds of functions can be realized in the emergency trip unit: send the control signal of the field failure circuit being carried out loop check to collecting and distributing control unit, or send shutdown signal and send the stopping signal of oil engine controller to the digital electro-hydraulic control unit to the main inlet throttle-stop valve switch.
Described emergency trip unit comprises that test is cut and throws switch, controller, relay, and test is cut and thrown two kinds of functions that switch control realizes the emergency trip unit, after controller receives stopping signal, by relay output control signal.
Described controller is 2 of redundant configuration independently PLC.
Also be provided with the optics alarm system in the described system, when the emergency trip unit receives the electrical signal of stopping signal, the work of optics alarm system.
Be provided with the PID arithmetic element in the described digital electro-hydraulic control unit, on-site signal and the preset value that collects compared calculating.
The beneficial effect that the utility model produces is:
The utility model the personnel when reducing unit operation drop into, avoid linking up the device damage accident that causes not in place because of the commissioning staff, we have developed the steam turbine instrument control system of integrated emergency trip function, security monitoring function, digital electro-hydraulic control function, servocontrol function, collecting and distributing control and operator station, can finish all controls, supervision, the protective function of steam turbine operation by this system; In order to solve the on-line debugging problem; in the emergency trip unit, designed the specific logical control loop; elements such as throwing switch is cut in supporting redundant programmable controller, test; with the trouble signal shielding that occurs in the running; prevent that trouble signal from causing compressor emergency shutdown, check simultaneously the signal fault reason, after the fault eliminating; again drop into this function, realize online debug function.
The utlity model has following advantage: integrated emergency trip function, security monitoring function, digital electro-hydraulic control function, servocontrol function, collecting and distributing control and operator station, cooperate between each equipment and finish exchanges data, minimizing is not mated the data collision that causes because of each equipment input, output signal type, personnel when reducing unit operation simultaneously drop into, and avoid linking up the device damage accident that causes not in place because of the commissioning staff; Solve trouble signal shielding problem in the debug process, realize unit on-line debugging function; Possess simultaneously two-shipper status tracking, interlocking function, when preventing that real stopping signal exists in the on-line debugging process, protection is effectively interdicted in system; The unit safety accident that causes because of the equipment faults itself is effectively evaded in supporting redundant emergent blocking unit.The major control that the utility model can be born Turbo-generator Set with monitor protective function, such as startups, rotating speed control, electric power control, running state and parameter supervision, overspeed protection, automatic emergency trip, manually make lock etc.
Description of drawings
Fig. 1 is the deployed configuration schematic representation of the peripheric surface of rack of the present utility model;
Fig. 2 is system flow schematic representation of the present utility model;
Fig. 3 is on-line debugging of the present utility model and two-shipper test interlocking function schematic flow sheet;
Number in the figure represents: the 1-cabinet; the 2-fan; 3-door knob switch; the 4-air-break switch; 5-security monitoring unit; 6-digital electro-hydraulic control unit; the 7-function is cut the throwing indicating section; the 8-air-break switch; 9-PLC/A; 10-PLC/B; the 11-relay; 12-oil engine controller; the 13-diode; the 14-socket; 15-shuts down the magnet control device; the 16-switch power; the 17-wire casing; the 18-card article; D-cabinet door; the F-cabinet is positive; L-cabinet left side; the B-cabinet back side; R-cabinet right side.
Embodiment
Shown in Fig. 1～3, steam turbine instrument control of the present utility model system comprises:
Digital electro-hydraulic control unit 6 with the operator station real-time communication, receives simultaneously on-site signal, compares with the internal preset value, draws control command and exports oil engine controller 12 to.Be provided with the PID arithmetic element in the digital electro-hydraulic control unit 6, on-site signal and the preset value that collects compared calculating.Digital electro-hydraulic control unit 6 receives on-site signal; as: rotating speed, electric power, be incorporated into the power networks etc.; the actual speed and the predefined rotating speed of target that collect are compared; draw control command to oil engine controller 12 through after the inner PID computing; when the stopping signal that receives the emergency trip unit or manual shut-down; the output stopping signal is to the emergency trip unit; be used for informing the running state of the present digital electro-hydraulic control unit 6 in emergency trip unit, simultaneously supporting communication conversion module is realized the data communication with operator station.
Operator station, operator station monitor all on-the-spot live signals, to oil engine controller 12 sending controling instructions.
Collecting and distributing control unit receives the electrical signal of security monitoring unit 5 and oil engine controller 12 and sends it to operator station.Collecting and distributing control unit receives the stopping signal of analog signals from security monitoring unit 5, alarm signal, emergency trip unit and from the analog signals of oil engine controller 12; realize the monitoring of current Operational Limits (such as the oil engine aperture); simultaneously all data upload are arrived operator station; can open, stop valve site and oil pump by operator station, realize telemonitoring and the control of all signals.
Also be provided with the emergency trip unit in the system; the emergency trip unit comprises testing to cut throws switch, controller, relay 11; test is cut and is thrown two kinds of functions that switch control realizes the emergency trip unit, after controller receives stopping signal, by relay 11 output control signals.And this controller is 2 of redundant configuration independently PLC.When security monitoring unit 5, collecting and distributing control unit or digital electro-hydraulic control unit 6 monitor stopping signal; send electrical signal to the emergency trip unit; following two kinds of functions can be realized in the emergency trip unit: send the control signal of the field failure circuit being carried out loop check to collecting and distributing control unit, or send shutdown signal and send the stopping signal of oil engine controller 12 to digital electro-hydraulic control unit 6 to the main inlet throttle-stop valve switch.
The emergency trip unit is used for receiving the stopping signal from scene, security monitoring unit 5, collecting and distributing control unit and 6 outputs of digital electro-hydraulic control unit, cuts by the test of function crop indicating section and throws the working state that switch is selected PLC.When selecting test input state, then do not shut down group, only leave stopping signal to light word alarm system and collecting and distributing control unit, realize the remote monitoring stopping signal, can carry out the On line inspection fault loop this moment; When selecting test excision state; namely enter the stoppage protection state; then export stopping signal and make 15 actions of shutdown magnet control device; make the on-the-spot electromagnet action of shutting down, close on-the-spot main inlet throttle-stop valve, and leave 1 stopping signal to digital electro-hydraulic control unit 6; this stopping signal need to be kept and recover afterwards in 5 seconds; make digital electro-hydraulic control unit 6 can export control command and close oil engine, the digital electro-hydraulic control unit 6 that can reset is simultaneously avoided endless loop occurring shutting down with the emergency trip unit.
Also be provided with light word alarm system in the system, when the emergency trip unit receives the electrical signal of stopping signal, the work of light word alarm system.
In this embodiment, steam turbine instrument control of the present utility model system comprises and monitors protection control gear, control device for synchronization up-down, operator station.Monitor that the protection control gear comprises: rack, redundant emergent blocking unit, security monitoring unit 5, digital electro-hydraulic control unit 6, oil engine controller 12.Wherein: rack comprise cabinet 1, fan 2, door knob switch 3, fluorescent lamp 4, air-break switch 8, diode 13, socket 14, switch power 16.The emergency trip unit comprises that function is cut and throws indicating section 7, PLC/A 9, PLC/B 10, relay 11, shuts down magnet control device 15.
Wherein, fan 2 is installed on the door of cabinet 1; door knob switch 3, fluorescent lamp 4 are installed on the cabinet 1; air-break switch 8, PLC/A 9, PLC/B 10, relay 11, socket 14, switch power 16, shutdown magnet control device 15, socket 14, switch power 16 are installed on the cabinet 1 by screw and card article 18, and security monitoring unit 5, digital electro-hydraulic control unit 6, oil engine controller 12 are installed on the cabinet 1 by screw.
All parts of the utility model emergency trip unit are redundant configuration; namely independently 2 PLC logic controllers (being PLC/A 9 and PLC/B 10), independently shut down action indication, test indication, normally indication and function are shut down indication; independently relay 11 control outputs; all stopping function signals are gathered by PLC/A 9 and PLC/B 10 simultaneously; export simultaneously stopping signal; the two-shipper status tracking; for subsequent use each other; any machine breaks down; switch to immediately guest machine; guarantee in time blocking compressor emergency shutdown signal, guarantee unit safety.
The utlity model has unique on-line debugging function, satisfy in the unit running process, instrument control system and whole unit are carried out regular visit.Redundant PLC logic controller receives the stopping signal from the scene simultaneously; as: manual shut-down; control-oil pressure is low shuts down; lubricant oil forces down shutdown; generator failure shutdown etc.; reception is from the stopping signal of security monitoring unit 5 outputs; as: the electricity hypervelocity is shut down; the large shutdown of axial displacement; watt vibration is large shuts down etc.; reception is from the stopping signal of collecting and distributing control unit; as: bearing temperature is high shuts down; exhaust pressure is high shuts down; the high shutdown of condenser hot well liquid level etc.; reception is from digital electro-hydraulic control unit 6 stopping signals; cut throwing switch S A1 by test; SA2 can select the working state of PLC/A 9 and PLC/B 10; throw switch S A1 selection test input when cutting; SA2 selects the test excision; SA1-1 and SA1-2 are closed simultaneously; SA2-1 and SA2-2 disconnect simultaneously; the working state of expression A machine is trystate; the working state of B machine is the stoppage protection state; otherwise; the working state that then represents the A machine is the stoppage protection state; the working state of B machine is trystate; after the PLC energising; if two machines are all normal; then the normal tutorial light of two machines is bright; A machine test tutorial light is bright; B machine test tutorial light goes out; when pressing SB1 button simulated field stopping signal; the function halt indicator that the A machine is corresponding is bright; PLC/A 9 leaves the switching value signal makes corresponding function shut down relay 11 actions; thereby leave stopping signal to light word alarm system and collecting and distributing control unit; realize the remote monitoring stopping signal; but shutting down magnet control device 15 is failure to actuate; keep the unit running; if this moment, the A machine failed normally to leave signal to light word alarm system and collecting and distributing control unit; it is unusual to illustrate that then passage exists; need to check current shutdown passage; realize online debug function; test all passages with the method, prevent the shutdown that causes the faults such as device interior loop bad connection to cause because of aging circuit or running environment.Need after testing the state of two machines is cut to the stoppage protection state; when detecting on-the-spot true stopping signal; corresponding function halt indicator and the stopping signal tutorial light of two machines are bright; and PLC not only leaves stopping signal to light word alarm system and collecting and distributing control unit; shut down simultaneously 15 actions of magnet control device; make the on-the-spot electromagnet action of shutting down, close on-the-spot main inlet throttle-stop valve, unit is interdicted protection.
The utility model has increased the test interlocking function on on-line debugging function basis; after the energising; when two machines all normal; then export the machine normal signal to the other side's machine; running state with the machine outputs to the other side's machine simultaneously; originally confidential input is tested not only will satisfy to cut and is thrown switch selection test input; also to satisfy the other side's machine and normally and not drop into test; as when two machines all are not trystate; can select arbitrarily a seat in the plane trystate; if selecting A machine current state is trystate, then the B machine can not be chosen as trystate again, throws switch selection trystate even the B machine is cut; because the A machine is in trystate; B machine PLC still looks the B machine and drops into unsuccessful test, and when preventing that real stopping signal exists in the on-line debugging process, protection is effectively interdicted in system.
Claims (5)
1. steam turbine instrument control system comprises:
The security monitoring unit, the operation of monitoring Turbo-generator Set records in-site modeling amount signal and is converted into electrical signal;
The digital electro-hydraulic control unit with the operator station real-time communication, receives simultaneously on-site signal, compares with the internal preset value, draws control command and exports the oil engine controller to;
Operator station, operator station monitor all on-the-spot live signals, to oil engine controller sending controling instruction;
The oil engine controller, the two-way stroke signal that receives oil engine also is converted into electrical signal, accepts simultaneously control command that operator station sends, sends control signal to oil engine;
Collecting and distributing control unit receives the electrical signal of security monitoring unit and oil engine controller and sends it to operator station;
It is characterized in that: also be provided with the emergency trip unit in the described system; when security monitoring unit, collecting and distributing control unit or digital electro-hydraulic control unit monitor stopping signal; send electrical signal to the emergency trip unit; following two kinds of functions can be realized in the emergency trip unit: send the control signal of the field failure circuit being carried out loop check to collecting and distributing control unit, or send shutdown signal and send the stopping signal of oil engine controller to the digital electro-hydraulic control unit to the main inlet throttle-stop valve switch.
2. steam turbine instrument control according to claim 1 system; it is characterized in that: described emergency trip unit comprises testing to cut throws switch, controller, relay; test is cut and is thrown two kinds of functions that switch control realizes the emergency trip unit, after controller receives stopping signal, by relay output control signal.
3. steam turbine instrument control according to claim 2 system is characterized in that: described controller is 2 of redundant configuration independently PLC.
4. steam turbine instrument control according to claim 1 system is characterized in that: also be provided with the optics alarm system in the described system, when the emergency trip unit receives the electrical signal of stopping signal, the work of optics alarm system.
5. steam turbine instrument control according to claim 1 system is characterized in that: be provided with the PID arithmetic element in the described digital electro-hydraulic control unit, on-site signal and the preset value that collects compared calculating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407202 CN202745951U (en) | 2012-08-17 | 2012-08-17 | Turbine instrument control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407202 CN202745951U (en) | 2012-08-17 | 2012-08-17 | Turbine instrument control system |
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| Publication Number | Publication Date |
|---|---|
| CN202745951U true CN202745951U (en) | 2013-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220407202 Expired - Fee Related CN202745951U (en) | 2012-08-17 | 2012-08-17 | Turbine instrument control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828787A (en) * | 2012-08-17 | 2012-12-19 | 德阳瑞能电力科技有限公司 | Control system for turbine |
| CN104124665B (en) * | 2014-07-24 | 2017-03-22 | 江苏永钢集团有限公司 | Electric generator shunt tripping turbine controlling method |
| CN107450522A (en) * | 2017-08-29 | 2017-12-08 | 芜湖莫森泰克汽车科技股份有限公司 | ECU ageing testing equipments |
| CN107560867A (en) * | 2017-10-13 | 2018-01-09 | 上海华电电力发展有限公司 | Small turbine low pressure main inlet throttle-stop valve stroke experiment control system |
| CN109147976A (en) * | 2017-06-16 | 2019-01-04 | 苏州热工研究院有限公司 | A kind of stability control equipment applied to nuclear power station cuts machine method |
| CN111894684A (en) * | 2020-06-17 | 2020-11-06 | 天津国电津能滨海热电有限公司 | Steam turbine shaft vibration protection optimization system and optimization method |
| CN113864171A (en) * | 2021-08-31 | 2021-12-31 | 国家电网有限公司 | Control method of high-pressure oil jacking system of hydropower station generator |
-
2012
- 2012-08-17 CN CN 201220407202 patent/CN202745951U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828787A (en) * | 2012-08-17 | 2012-12-19 | 德阳瑞能电力科技有限公司 | Control system for turbine |
| CN102828787B (en) * | 2012-08-17 | 2014-11-12 | 德阳瑞能电力科技有限公司 | Control system for turbine |
| CN104124665B (en) * | 2014-07-24 | 2017-03-22 | 江苏永钢集团有限公司 | Electric generator shunt tripping turbine controlling method |
| CN109147976A (en) * | 2017-06-16 | 2019-01-04 | 苏州热工研究院有限公司 | A kind of stability control equipment applied to nuclear power station cuts machine method |
| CN107450522A (en) * | 2017-08-29 | 2017-12-08 | 芜湖莫森泰克汽车科技股份有限公司 | ECU ageing testing equipments |
| CN107560867A (en) * | 2017-10-13 | 2018-01-09 | 上海华电电力发展有限公司 | Small turbine low pressure main inlet throttle-stop valve stroke experiment control system |
| CN107560867B (en) * | 2017-10-13 | 2020-08-07 | 上海华电电力发展有限公司 | Small steam turbine low-pressure main valve stroke test control system |
| CN111894684A (en) * | 2020-06-17 | 2020-11-06 | 天津国电津能滨海热电有限公司 | Steam turbine shaft vibration protection optimization system and optimization method |
| CN111894684B (en) * | 2020-06-17 | 2022-07-01 | 天津国能津能滨海热电有限公司 | Steam turbine shaft vibration protection optimization system and optimization method |
| CN113864171A (en) * | 2021-08-31 | 2021-12-31 | 国家电网有限公司 | Control method of high-pressure oil jacking system of hydropower station generator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20150817 |
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| EXPY | Termination of patent right or utility model |