CN204331442U - Dry coke quenching cogeneration load varitrol - Google Patents
Dry coke quenching cogeneration load varitrol Download PDFInfo
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- CN204331442U CN204331442U CN201420800470.1U CN201420800470U CN204331442U CN 204331442 U CN204331442 U CN 204331442U CN 201420800470 U CN201420800470 U CN 201420800470U CN 204331442 U CN204331442 U CN 204331442U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model relates to a kind of dry coke quenching cogeneration load varitrol, belong to and relate to coking dry coke quenching heat recovery security technology area, this system comprises rotational speed governor and the DCS system being connected genset, the human-machine operation unit of dry coke quenching Turbo-generator Set steam operating mode is monitored in DCS system, rotational speed governor receives regulating command and regulates steam turbine admission pitch after sending control signal to the servoamplifier in system after carrying out definite value adjustment, is provided with and automatically regulates and manual adjustments two kinds of mode of operations in human-machine operation unit.The present utility model design auto-adjustment control pattern, create man machine operation interface, generation load adjustment can be carried out according to steam working conditions change, achieve dry coke quenching generation load full-automatic regulation, solve in prior art and manually carry out according to steam working conditions change the problem that generation load adjustment does not have to realize adjustment automatically.
Description
Technical field
The utility model relates to coking dry coke quenching heat recovery security technology area, particularly relates to a kind of dry coke quenching cogeneration load varitrol and method.
Background technology
In the domestic existing dry coke quenching afterheat generating system run, all employing DCS active station completes the monitoring to technological parameters such as coke dry quenching boiler steam, and steam turbine load adjustment is a set of independently electrohydraulic control system.The composition of horse steel dry coke quenching cogeneration supervisory system is DCS system and based on the electrohydraulic control system of WOODWARD505 controller.In Turbo-generator Set is run, the steam working conditions change that operating personnel monitor according to DCS system, at the enterprising line operate of 505 controller.Vapor pressure fluctuation is frequently dry coke quenching process characteristic, manually carry out generation load adjustment according to steam working conditions change, this situation had both affected the promptness that process operation regulates, easily cause again set speed adjustment system cloud gray model disorderly, be unfavorable for the realization of target for energy-saving and emission-reduction, also reduce the level that becomes more meticulous that generating production run controls.
Summary of the invention
Manually carrying out generation load adjustment according to steam working conditions change to overcome in prior art, could not realize the deficiency that truly dry coke quenching generation load regulates automatically, the utility model provides a kind of dry coke quenching cogeneration load varitrol and method.
The technical solution of the utility model is: a kind of dry coke quenching cogeneration load varitrol, this system comprises rotational speed governor and the DCS control system being connected genset, this system also comprises the human-machine operation unit being located at DCS active station and monitoring dry coke quenching Turbo-generator Set load condition in DCS control system, DCS system sends the regulating command meeting control strategy to rotational speed governor, rotational speed governor receives regulating command and sends control signal after carrying out servo-actuated adjustment in the servoamplifier in system, and servoamplifier regulates steam turbine admission pitch.Rotational speed governor accepts the instruction of DCS control system, realizes the servo-actuated closed-loop control of long-range varying load.Be provided with the fluctuation range of genset steam operating mode in described system, steam duty parameter is in the allowed band of default, and system does not carry out Load Regulation.The alarm unit of the signal that to give the alarm when steam work condition abnormality is provided with in described DCS active station.Be provided with in described human-machine operation unit and automatically regulate and manual adjustments two kinds of mode of operations, automatically regulate different with the execution instruction in manual adjustments, automatic command execution cycle time is also different from manual execution cycle time.The super pulsewidth locking unit of safe operation protection is provided with in described rotational speed governor.
A kind of dry coke quenching cogeneration load Automatic adjustment method, the method step comprises: step one, gather the steam operating mode of dry coke quenching Turbo-generator Set, and judges that the steam operating mode of genset is whether in normal range fluctuation; Step 2, when steam operating mode fluctuates in normal range, system does not regulate and control; When steam duty parameter departs from normal value, system sends Load Regulation instruction, judges that steam operating mode exceeds automatic intervention point simultaneously; Step 3, when the steam operating mode of genset depart from normal value and in automatic intervention point time, DCS active station sends the automatic regulating command of equidirectional same pulsewidth different frequency, and controller receives instruction and carries out spatial load forecasting after calculating and is adjusted to steam operating mode and returns in normal range; Step 4, after steam operating mode exceeds automatic intervention point, system sends manual adjustments instruction, and Manual load is adjusted to steam operating mode and returns in normal range.
Regulating command in step 2 is the command signal sent by the human-machine operation unit in system.Load Regulation instruction in described method is the regulating impulse of the equidirectional same pulsewidth different frequency sent according to change direction and the speed of steam duty parameter.Instruction execution cycle in automatic regulating command in described method is 10S, and the instruction execution cycle of manual adjustments instruction is 100mS.
The utility model has following good effect: the utility model design auto-adjustment control pattern, create man machine operation interface, generation load adjustment can be carried out according to steam working conditions change, truly achieve dry coke quenching generation load full-automatic regulation, and steam operating mode exceed default scope too high time, manual adjustment mode can be opened, generating is produced accurately control according to dry quenching system rule, improve promptness and the accuracy of system, reach therrmodynamic system unified allocation of resources, waste heat reclaiming process is optimized, worker's labour intensity reduces, improve generating efficiency, achieve generating production run and control precisely target efficiently, and cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the genset in the utility model embodiment;
Fig. 2 is the structured flowchart of the generation load varitrol in the utility model embodiment;
Fig. 3 is the schematic diagram of the human-machine operation unit in the utility model embodiment;
Fig. 4 is the process flow diagram of the generation load Automatic adjustment method in the utility model embodiment;
Fig. 5 is the steering logic figure of the generation load Automatic adjustment method in the utility model embodiment.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is as the effect of the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part and principle of work, manufacturing process and operation using method etc., be described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present utility model, technical scheme.
A kind of dry coke quenching cogeneration load varitrol, as shown in Figure 1 and Figure 2, this system comprises DCS system and the rotational speed governor of existing monitoring use, DCS system connects dry coke quenching genset, rotational speed governor connects DCS system, mainly carry out load closed loop in the utility model effectively to control, so preferably adopt the twisted pair line connection mode of band screen layer between controller and DCS system.The super pulsewidth locking unit of safe operation protection is provided with, at super pulsewidth locking, protection controller and the system safety operation of steering order outlet by being provided with the automatic steering logic with safety protection function in controller of the present utility model.Human-machine operation unit and alarm unit is included in DCS system, human-machine operation unit is for monitoring dry coke quenching Turbo-generator Set steam operating mode, human-machine operation unit connects genset, gather the steam operating mode of genset, main direction and the speed gathering the vapor pressure Parameters variation of genset; At system monitoring to when the steam duty parameter of genset is not within the scope of default, will give the alarm signal.
Under accidental conditions, DCS system is provided with 3.14MPa, 3.45MPa vapor pressure alarm set point.When vapor pressure declines, operations staff carries out removal of load operation, and when vapor pressure raises, operations staff carries out on-load operation.Vapor pressure is stabilized in 3.14MPa ~ 3.45MPa.During automatic adjustment, by Steam pressure control at 3.2 to 3.3MPa, vapor pressure that load is adjustable interval lower interval 3.0 ~ 3.2MPa and on interval 3.3 ~ 3.6MPa.When pressure surmounts alarm set point, can manually intervene.When manually intervening, can treat that it regulates automatically and get back to control interval, when pressure continues to surmount adjustable interval, automatic adjustment is exited automatically.
Improvement in the utility model is to utilize existing DCS control module to carry out the transformation of genset process control optimization, create man machine operation interface unit, send the automatic regulating command of load, human-machine operation unit can show alarm signal and have text prompt to carry out guidance operation.The human-machine operation unit of interactive function close friend is provided with in DCS system, as shown in Figure 3, when human-machine operation unit monitors the unit abnormal signal of each monitoring point, DCS active station sends Load Regulation instruction to rotational speed governor, rotational speed governor receives regulating command and sends bias control signal after carrying out definite value adjustment in the servoamplifier in system, after servoamplifier, regulate steam turbine admission pitch, realize automatic regulation function.Rotational speed governor receives PLC steering order, is called that definite value adjusts according to command pulse width change of load setting value; Bias control signal is in regulating system, and regulon carries out computing according to the deviation of regulating parameter instantaneous value and setting value, sends control signal.At this, with the deviation of former setting value after setting value changes.Regulate after servoamplifier and refer to that the control signal that admission pitch sends goes electro-hydraulic actuator to realize the adjustment of admission pitch after servoamplifier amplifies.
For dry coke quenching auxiliary productive prospecting, manual intervention point are set, under extreme operating condition, control mode can be selected according to equipment operation condition, carry out Manual load adjustment at DCS monitored picture, automatically regulate and manual adjustments two kinds of mode of operations so be provided with in DCS control module of the present utility model.Be provided with the fluctuation range of genset steam operating mode in system, the steam duty parameter of monitoring is when the allowed band of default, and system DCS system does not send carries out Load Regulation instruction.When steam duty parameter departs from normal value, DCS system is according to working condition pressure Parameters variation direction and speed, send the regulating impulse of equidirectional same pulsewidth different frequency, controller carries out integral operation after receiving instruction, adjustment generation load definite value, then spatial load forecasting adjustment is carried out according to the deviation size between load measurement (positive correlation according between vapor pressure and generation load) and definite value, until vapor pressure recovers normal range, during Load Regulation, the Load Regulation performance period is 10S, and each cycle is carried out a pressure parameter sampling and compared.Automatically regulate when working condition pressure value exceeds too high or too low the exiting of normal value and report to the police, proceed to manual adjustments, first increasing/load shedding is manually selected to operate, then during Load Regulation, the Load Regulation performance period is 100mS, each cycle is carried out a pressure parameter sampling and is compared, until vapor pressure recovers normal range.
A kind of dry coke quenching cogeneration load Automatic adjustment method, as shown in Figure 4, Figure 5, the method step comprises: step one, gather the steam operating mode of dry coke quenching Turbo-generator Set, and judges that the steam operating mode of genset is whether in normal range fluctuation.Step 2, when steam operating mode fluctuates in normal range, the DCS active station in system does not send load control instruction; When steam duty parameter departs from normal value, system sends Load Regulation instruction, and regulating command regulates steam turbine admission pitch to realize automatic regulation function after servo is amplified, and judges that steam operating mode exceeds automatic intervention point simultaneously.Step 3, when the steam operating mode of genset depart from normal value and in automatic intervention point time, DCS active station is according to working condition pressure Parameters variation direction and speed, send the regulating impulse of equidirectional same pulsewidth different frequency, controller carries out integral operation after receiving instruction, adjustment generation load definite value, then spatial load forecasting adjustment is carried out according to the deviation calculated, during Load Regulation, the Load Regulation performance period is 10S, each cycle is carried out a pressure parameter sampling and is compared, until vapor pressure recovers normal range.Step 4, after steam operating mode exceeds automatic intervention point, system sends manual adjustments instruction, and during Load Regulation, the Load Regulation performance period is 100mS, and each cycle is carried out a pressure parameter sampling and compared, until vapor pressure recovers normal range.The method that the utility model provides is by regulating timely and effectively, both unit generation efficiency had been improved, be conducive to again whole dry coke quenching residual neat recovering system stable and high effective operation, and change two places policer operation pattern, realize generation load automatic remote collection control operation.
After method establishment in the utility model, can debug, debugging step is: steps A, carry out analysis determine reference mark and related process parameters value, by there is the main steam condition of database to dry coke quenching Waste Heat Power Station and generation load is added up and Data Analysis Services.Step B, active station create man-machine interface, and data results is downloaded in PLC control module.Step C, create online data message control point, carry out commissioning test monitoring.Step D, controller do not connect machine and carry out steering logic on-line debugging defect elimination, and Non-follow control sends Load Regulation instruction and carries out definite value test to controller.Step e, create online data message control point, do not connect machine controller and automatically control trial run, monitoring.Between step F, trial run period, after On-line Control data message is without exception, controller connects machine and runs.Try out successfully, just can open load control system, system is through the debugging of historical data, trial period and accuracy rate shorten all greatly, ensure that the normal work of load control system simultaneously, avoid being unfamiliar with of normal system works, thus affect the normal operation of genset.
By reference to the accompanying drawings the utility model is exemplarily described above; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (6)
1. a dry coke quenching cogeneration load varitrol, this system comprises rotational speed governor and the DCS control system being connected genset, it is characterized in that, this system also comprises the human-machine operation unit being located at DCS active station and monitoring dry coke quenching Turbo-generator Set load condition in DCS control system, DCS system sends regulating command to rotational speed governor, rotational speed governor receives regulating command and sends control signal after carrying out servo-actuated adjustment in the servoamplifier in system, and servoamplifier regulates steam turbine admission pitch.
2. dry coke quenching cogeneration load varitrol according to claim 1, it is characterized in that, described rotational speed governor accepts the instruction of DCS control system, realizes the servo-actuated closed-loop control of long-range varying load.
3. dry coke quenching cogeneration load varitrol according to claim 1, it is characterized in that, be provided with the fluctuation range of genset steam operating mode in described system, steam duty parameter is in the allowed band of default, and system does not carry out Load Regulation.
4. dry coke quenching cogeneration load varitrol according to claim 1, is characterized in that, is provided with the alarm unit of the signal that to give the alarm when steam work condition abnormality in described DCS active station.
5. dry coke quenching cogeneration load varitrol according to claim 1, it is characterized in that, be provided with in described human-machine operation unit and automatically regulate and manual adjustments two kinds of mode of operations, automatic adjustment is different with the execution instruction in manual adjustments, and automatic command execution cycle time is also different from manual execution cycle time.
6. dry coke quenching cogeneration load varitrol according to claim 1, is characterized in that, is provided with the super pulsewidth locking unit of safe operation protection in described rotational speed governor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420800470.1U CN204331442U (en) | 2014-12-17 | 2014-12-17 | Dry coke quenching cogeneration load varitrol |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420800470.1U CN204331442U (en) | 2014-12-17 | 2014-12-17 | Dry coke quenching cogeneration load varitrol |
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| CN204331442U true CN204331442U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420800470.1U Expired - Fee Related CN204331442U (en) | 2014-12-17 | 2014-12-17 | Dry coke quenching cogeneration load varitrol |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536404A (en) * | 2014-12-17 | 2015-04-22 | 马钢(集团)控股有限公司 | Automatic load regulation system and method for dry quenching waste heat power generation |
| CN104836377A (en) * | 2015-05-15 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Alarm type coke oven waste heat power generation system based on power supply adjustment circuit |
-
2014
- 2014-12-17 CN CN201420800470.1U patent/CN204331442U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536404A (en) * | 2014-12-17 | 2015-04-22 | 马钢(集团)控股有限公司 | Automatic load regulation system and method for dry quenching waste heat power generation |
| CN104536404B (en) * | 2014-12-17 | 2017-03-08 | 马钢(集团)控股有限公司 | Dry coke quenching cogeneration load automatic regulating system and method |
| CN104836377A (en) * | 2015-05-15 | 2015-08-12 | 成都中冶节能环保工程有限公司 | Alarm type coke oven waste heat power generation system based on power supply adjustment circuit |
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| Date | Code | Title | Description |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20171217 |