CN111443663A - Cement waste heat power generation self-starting and stopping system realized by adopting decentralized control system - Google Patents
Cement waste heat power generation self-starting and stopping system realized by adopting decentralized control system Download PDFInfo
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- 239000002918 waste heat Substances 0.000 title claims abstract description 67
- 239000004568 cement Substances 0.000 title claims abstract description 28
- 238000010248 power generation Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 187
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 20
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 20
- 239000010452 phosphate Substances 0.000 claims abstract description 20
- 239000000779 smoke Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 238000006392 deoxygenation reaction Methods 0.000 claims abstract description 12
- 239000010736 steam turbine oil Substances 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 19
- 238000011001 backwashing Methods 0.000 claims description 11
- 238000001223 reverse osmosis Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 7
- 230000005284 excitation Effects 0.000 claims description 5
- 235000020681 well water Nutrition 0.000 claims description 5
- 239000002349 well water Substances 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 4
- 239000010705 motor oil Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000010723 turbine oil Substances 0.000 claims 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
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- 230000001276 controlling effect Effects 0.000 description 13
- 238000007726 management method Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000004801 process automation Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 241001584775 Tunga penetrans Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 239000010711 gasoline engine oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
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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 invention belongs to the technical field of cement waste heat recycling, and discloses a cement waste heat power generation automatic start-stop system realized by adopting a decentralized control system. The invention comprises 13 control system units including a boiler water treatment system, a circulating cooling water system, a steam turbine condensed water system, a deoxygenation water supply system, a waste heat boiler drum water supply control, a boiler water phosphate dosing control, a waste heat boiler ash conveying system, a steam turbine oil system, a waste heat boiler smoke system, a steam turbine heating pipe control, a steam turbine vacuumizing system, a steam turbine flushing system and a generator grid-connected system, wherein each control system unit comprises a plurality of sub-control units or is an independent control unit, each sub-control unit comprises a plurality of control sub-groups, and each control sub-group realizes a control target by calling an internal control breakpoint or a control object. The invention is an important technical breakthrough in the intelligent development process of cement waste heat power generation production, and realizes the transformation of the cement waste heat power generation production from the traditional industrial process control technology to the industrial intelligent and digital technology.
Description
Technical Field
The invention belongs to the technical field of cement waste heat recycling, and particularly relates to a cement waste heat power generation automatic start-stop system realized by a decentralized control system, which is mainly applied to automatic start and automatic stop control (AWHRS technology) of cement waste heat power generation and meets daily operation and maintenance requirements of cement waste heat power generation.
Background
In 5 months in 2015, China released 2025, emphasizing that intelligent manufacturing based on an information physical system, such as intelligent equipment and intelligent factories, is leading the change of manufacturing modes, accelerating the promotion of the deep integration of new-generation technical information and manufacturing industry, and taking intelligent manufacturing as a main attack direction, and realizing the intellectualization in key fields of manufacturing industry by 2025 years. At present, cement waste heat power generation in China is in a transition stage from a traditional process automation technology to a whole plant intelligent technology, and the intelligent upgrading and transformation process of the cement waste heat power generation still faces a plurality of technical bottlenecks and challenges, particularly the technical problem of power station process automation and the transformation of leading out a new production management mode in the process of building a power station intelligent technology. The improvement of the technical level of the power station process automation and the level of the production process cooperative management also has wider development space in the intelligent construction of the cement waste heat power generation.
Disclosure of Invention
The invention aims to effectively improve the automation technical level of a cement waste heat power generation process and solve the problem of man-machine cooperation in production process management, realize an automatic start-stop technology (AWHRS technology) of cement waste heat power generation, and provide a cement waste heat power generation automatic start-stop system realized by adopting a decentralized control system.
Specifically, the technical scheme adopted by the invention is as follows: the system comprises 13 control system units including a boiler water treatment system, a circulating cooling water system, a steam turbine condensed water system, a deoxygenation water supply system, a waste heat boiler drum water supply control system, a boiler water phosphate dosing control system, a waste heat boiler ash conveying system, a steam turbine oil system, a waste heat boiler smoke air system, a steam turbine heating pipe control system, a steam turbine vacuumizing system, a steam turbine turning system and a generator grid-connected system, wherein each control system unit comprises a plurality of sub-control units or independent control system units, each sub-control unit and each independent control system unit comprise a plurality of control subgroups, each control subgroup realizes the control target by calling a control breakpoint or a control object in the sub-control group, and the self-start-stop system sequentially controls the boiler water treatment system, the circulating cooling water system, the steam turbine condensed water system, the deoxygenation water supply system and the waste heat boiler drum water supply control system according to preset parameters, The method comprises the following steps that furnace water phosphate dosing control, an exhaust-heat boiler ash conveying system, a steam engine oil system, an exhaust-heat boiler smoke and air system, steam engine heating pipe control, a steam engine vacuumizing system, a steam engine turning system and a generator grid-connected system are automatically started in sequence until grid-connected power generation of a unit is completed, the automatic starting and stopping system stops all control system units according to preset parameters in the reverse sequence of the starting sequence when the unit is stopped, and control of all control breakpoints and equipment is completed based on a distributed control system.
Further, the boiler water treatment system comprises 4 sub-control units including a first-stage reverse osmosis water production automatic control unit, a second-stage reverse osmosis water production automatic control unit, a multi-medium filter backwashing automatic control unit and an activated carbon filter backwashing automatic control unit, the circulating cooling water system comprises 4 sub-control units including a circulating water pool water level automatic control unit, a circulating water pump valve group automatic control unit, a circulating water specific conductivity automatic control unit and a steam exhaust chamber vacuum automatic control unit, the steam turbine condensate system comprises 4 sub-control units including a condensate pump valve group automatic control unit, a hot well water level automatic control unit, a demineralized water tank water level automatic control unit and a drain tank water level automatic control unit, the deoxygenation water supply system comprises 4 sub-control units including a feed pump valve group automatic control unit, a deoxygenator water level automatic control unit, a feed main pipe pH automatic control unit and a feed main pipe pressure automatic control unit, the waste heat boiler drum water feeding control comprises 9 sub-control units including a kiln head boiler high-pressure/low-pressure drum water level automatic control unit, a kiln head boiler high-pressure/low-pressure drum boiler water ratio conductivity automatic control unit, a kiln tail boiler superheater header outlet pressure automatic control unit, a kiln tail boiler drum water level automatic control unit and a kiln tail boiler drum boiler water ratio conductivity automatic control unit, the boiler water phosphate dosing control unit is an independent control unit, the waste heat boiler ash conveying system comprises 2 sub-control units including a kiln head boiler ash conveying system automatic control unit and a kiln tail boiler ash conveying system automatic control unit, the steam engine oil system comprises 3 sub-control units including a steam engine main oil pump outlet oil pressure automatic control unit, a lubricating oil pressure automatic control unit and a jigger motor automatic control unit, and the waste heat boiler smoke air system comprises a kiln head boiler smoke air system automatic control unit, The automatic control of the kiln tail boiler smoke and air system comprises 2 sub-control units, the steam engine heating pipe control comprises 5 sub-control units including kiln head boiler main steam temperature rise and boost automatic control, kiln head boiler steam supplement temperature rise and boost automatic control, kiln tail boiler main steam temperature rise and boost automatic control, steam engine main steam temperature rise and boost system automatic control, the steam engine vacuum pumping system comprises 7 sub-control units including water jet pump set automatic control, water jet tank water level automatic control, water jet tank temperature automatic control, pressure equalizing tank main steam pressure automatic control, pressure equalizing tank main steam temperature automatic control, pressure equalizing tank steam seal pressure automatic control and condenser vacuum automatic control, the steam engine flushing system comprises 7 sub-control units including steam exhaust chamber temperature automatic control, steam engine hanging gate automatic control, steam turbine trip protection system steam engine flushing time automatic control, The steam turbine digital electro-hydraulic regulation system automatically controls 4 sub-control units in total during steam turbine running, and the generator grid-connected system comprises an excitation system automatic control unit, a synchronous device automatic control unit, a steam turbine trip protection system generator grid-connected system automatic control unit and a steam turbine digital electro-hydraulic regulation system generator grid-connected system automatic control unit in total of 4 sub-control units.
Furthermore, each sub-control unit and the independent control system unit comprise a corresponding field device system and a field instrument system, wherein the field device system consists of a field device and an electric control system or an independent control system matched with the field device, the field device system receives and executes an instruction sent by a control breakpoint and feeds back a working state to the control breakpoint, the field instrument system consists of a single independent measuring element or a multifunctional instrument device or a data acquisition system which is relatively independent and mutually connected and formed by combining a plurality of instruments, and the field instrument system acquires field production data and updates the data to the control breakpoint in real time.
Further, the distributed control system comprises a data acquisition and processing system, an analog quantity control system, a sequence control system, a turbine emergency trip system and a turbine digital electric control system.
The invention has the beneficial effects that: aiming at the technical problem of process automation in the intelligent construction of cement waste heat power generation, the invention realizes the automatic starting and stopping functions of cement waste heat power generation plant equipment, can effectively improve the automation technical level of the cement waste heat power generation process and the man-machine cooperative management level in the production process management, has the characteristics of safe and reliable start and stop of a unit, less operation and maintenance personnel, standardized process control, man-machine cooperative management, remarkable economic benefit and the like, and also has extremely high social benefit.
Drawings
FIG. 1 is a schematic diagram of the control levels of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
The embodiment discloses an automatic start-stop technology (AWHRS technology) applied to cement waste heat power generation, and realizes an automatic start-stop system for automatic start and stop of cement waste heat power generation plant equipment. In order to realize the function, the automatic start-stop system is provided with three layers of breakpoints on a control level, so that the cement waste heat power generation process flow is stripped from a physical structure to form relatively independent breakpoints, and each breakpoint exists for realizing a certain control target. The breakpoint at the higher level is 13 control system units, the breakpoint at the lower level is each sub-control unit, and the breakpoint at the lowest level is a control breakpoint or a control object inside the control sub-group. These breakpoints appear to be "independent," but are interrelated and interactive in control.
Specifically, the system comprises 13 control system units including a boiler water treatment system, a circulating cooling water system, a steam turbine condensed water system, a deoxygenation water supply system, a waste heat boiler drum water supply control, a boiler water phosphate dosing control, a waste heat boiler ash conveying system, a steam turbine oil system, a waste heat boiler smoke and air system, a steam turbine heating pipe control, a steam turbine vacuumizing system, a steam turbine flushing system and a generator grid-connected system. Each control system unit comprises a plurality of sub-control units or is an independent control unit, each sub-control unit and the independent control system unit comprise a plurality of control subgroups, and each control subgroup realizes the control target of the control subgroup by calling a control breakpoint or a control object in the control subgroup.
Each sub-control unit and the independent control unit comprise corresponding field equipment systems and field instrument systems, wherein each field equipment system comprises field equipment and a matched electric control system or an independent control system thereof, the field equipment systems receive and execute instructions sent by the control breakpoints and feed back the working state to the control breakpoints, each field instrument system comprises a single independent measuring element or a multifunctional instrument device or a data acquisition system which is formed by combining a plurality of instruments and is relatively independent and mutually connected, and the field instrument systems acquire field production data and update the data to the control breakpoints in real time.
The control of each control break point and equipment is completed based on a distributed control system, the distributed control system comprises a data acquisition and processing system (DAS), an analog quantity control system (MCS), a Sequence Control System (SCS), a steam turbine trip protection system (ETS), a steam turbine digital electro-hydraulic regulation system (DEH) and the like, and the centralized monitoring and the distributed control of a waste heat boiler system, a steam turbine and public system, an electrical system and a boiler water treatment system are mainly realized. The integrated development environment (including upper computer development and lower computer development) of the distributed control system makes it possible to realize the AWHRS technology for cement waste heat power generation, and the languages which can be used for secondary development are as follows: text language, ladder diagram, function block, sequence control block, etc. The network planning of the distributed control system is characterized in that a redundant high-speed data bus is adopted for data communication, and an I/O cabinet, an engineer station and an operator station are hung on the bus.
The cabinet planning characteristic of the distributed control system is as follows:
(1) the boiler water treatment system is provided with 1I/O cabinet (a main control cabinet), and 1 pair of controllers and a plurality of I/O modules are arranged in the cabinet;
(2) the water feeding control of the waste heat boiler drum, the furnace water phosphate dosing control, the waste heat boiler ash conveying system, the waste heat boiler smoke and air system and the steam engine heating pipe control (the waste heat boiler part) are provided with 2I/O cabinets, wherein 1 is a main control cabinet of the kiln head boiler (provided with 1 pair of controllers and a plurality of I/O modules in the cabinet), the other 1 is a remote I/O cabinet of the kiln tail boiler, and a plurality of I/O modules are arranged in the cabinet.
(3) The circulating cooling water system, the steam turbine condensate system, the deoxygenation water supply system, the steam turbine oil system, the steam turbine heating pipe control, the steam turbine vacuum pumping system, the steam turbine flushing system and the generator grid-connected system are provided with 3I/O cabinets, wherein 1 is a steam turbine main control cabinet (1 pair of controllers and a plurality of I/O modules are arranged in the cabinet), and the other 2 is an I/O cabinet which is provided with a plurality of I/O modules.
(4) The I/O module includes: the device comprises an analog quantity output module, an analog quantity input module, a thermal resistance input module, a thermocouple input module, a switching value output module, a switching value input module and the like.
Preparation before activation of AWHRS technology: after the equipment inspection in each breakpoint of the whole cement waste heat power generation plant is finished, the AWHRS technology can be used when the inspection result is in a healthy state. The operator needs to devote "AWHRS" functionality and remove the "safety locks" before using the AWHRS technique. The safety lock can avoid misoperation of operation and maintenance personnel to ensure the safety of the unit and the personnel, when the unit completes a start task, a stop task or the unit is in an overhaul period, the control system unit at a higher level loses the function, the safety lock function can be started to disable the manual operation function of the related breakpoint, but the control system unit without the safety lock function can still run independently, and an operator can randomly start or disable the control system units to ensure that the unit is safer and more reliable.
After the preparation work is ready, after a power station value length or a power station length instruction is received, the automatic starting or stopping operation can be started, and under the control of the automatic starting and stopping system, the unit can automatically start or stop the corresponding control system units in sequence according to preset parameters. An operator can look up the equipment running information of the unit at any time in the starting and stopping process of the unit so as to master the running state of the unit and the working condition of the equipment in real time. In an emergency situation, the operator can perform the following operations at any time: the safety of the unit is not affected when the unit is paused, skipped, continued and reset, etc., and the unit can be switched to manual control if necessary, and then the unit can keep the current running state until the operator manually completes the subsequent operation, and the AWHRS technology can be switched undisturbed in the whole switching process, thereby ensuring that the unit is always in the safe state. Meanwhile, by means of the fact that the power station process management technology based on the AWHRS technology is more standardized, an operator can feel more comfortable during subsequent operation of the set, the feeling of being busy and disorderly and free of proper feeling can not be generated, accordingly great psychological pressure can not be borne, and man-machine cooperative management is finally achieved.
A startup process based on an AWHRS technology comprises the following steps: in the starting process of the unit, the AWHRS technology can sequentially start corresponding equipment according to preset parameters, namely a boiler water treatment system, a circulating cooling water system, a steam turbine condensate system, a deoxygenation water supply system, waste heat boiler drum water supply, boiler water phosphate dosing, a waste heat boiler ash conveying system, a steam engine oil system, a waste heat boiler smoke and air system, a heating pipe, a steam turbine vacuumizing system, steam turbine flushing and power generator grid-connected system until the unit grid-connected power generation is completed, and can prompt a user to start the unit and finish the information after a starting task is completed, meanwhile, the system will automatically release the AWHRS control authority, the released control authority will be transferred to the sub-control unit of lower level or the independent control unit, and continuously executing own control target by a sub-control unit at a lower level or an independent control unit, and finally enabling the unit to operate in an optimal state.
Shutdown procedure based on AWHRS technology: the shutdown process of the unit is similar to the startup process, and the control system units of each higher level can be executed in a reverse order according to preset parameters, and the shutdown mode is divided into two types: one is a general purpose shutdown and the other is an accident shutdown. Wherein, general shut down: after receiving a shutdown instruction, the AWHRS technology gradually reduces the load of the unit to a normal shutdown range, and then sequentially calls control system units of higher levels in a reverse order until all equipment and valve positions of valves are at safe and reasonable positions, so that the unit is ensured to be safely and stably stopped; shutdown in case of accident: after receiving an ETS (turbine trip protection system) stop instruction, a DEH (digital electro-hydraulic turbine regulation system) stop instruction and an operation console manual stop instruction, the AWHRS technology immediately triggers the main protection action of the generator and the like, so that the unit is ensured to be stopped safely and stably.
The sub-control units at the lower level are specifically as follows: the boiler water treatment system is composed of a first-stage reverse osmosis water production automatic control system, a second-stage reverse osmosis water production automatic control system, a multi-medium filter backwashing automatic control system and an active carbon filter backwashing automatic control system. The control logic is characterized in that: the automatic start/stop of the first-stage reverse osmosis water production, the automatic start/stop of the second-stage reverse osmosis water production, the automatic start/stop of the backwashing of the multi-media filter, the automatic start/stop of the backwashing of the activated carbon filter and other 8 control subgroups. Wherein, each control subgroup starts the control break point or control object in turn to realize a smaller control target, such as: water preparation, backwashing and the like. When the boiler water treatment system is started, the higher-level scheduling instructions sequentially call the lower-level sub-control units in turn, and finally qualified water quality suitable for unit water is produced; when the boiler water treatment system is stopped, the higher-level scheduling instructions sequentially call the lower-level sub-control units in a reverse order until all the motor equipment is stopped, the valve positions of the valves are in safe and reasonable positions, and all the automatic control is stopped. The stage of investment is automatic:
(1) the first-stage reverse osmosis water production is automatically controlled;
(2) the second-stage reverse osmosis water production is automatically controlled;
(3) backwashing of the multi-media filter is automatically controlled;
(4) backwashing of the activated carbon filter is automatically controlled;
(5) the outlet temperature of the plate heater is automatically controlled;
(6) the pH of the second-stage reverse osmosis inlet is automatically controlled;
(7) automatic control of the water level of the original water tank and the like.
The circulating cooling water system is composed of automatic control of the water level of a circulating water pool, automatic control of a circulating water pump valve group, automatic control of circulating water specific conductivity and automatic control of a steam exhaust chamber vacuum. The control logic is characterized in that: 8 control subgroups such as automatic input/cut-off of the water level of the circulating water pool, automatic start/stop of a pump valve group of a circulating water pump, automatic input/cut-off of specific conductivity of circulating water, automatic input/cut-off of vacuum of an exhaust chamber and the like. Wherein, each control subgroup starts the control break point or control object in turn to realize a smaller control target, such as: automatic control of water level of the circulating water tank, automatic control of vacuum of the steam exhaust chamber and the like. When the circulating cooling water system is started, the higher-level scheduling instruction sequentially calls each lower-level sub-control unit, and finally the water level of the circulating water pool and the vacuum of the steam exhaust chamber are in a target range; when the circulating cooling water system is stopped, the higher-level dispatching instructions sequentially call the lower-level sub-control units in a reverse order until all the motor equipment is stopped and the valve positions of the valves are in safe and reasonable positions, and the system quits all automation. The stage of investment is automatic:
(1) the pump valve group of the circulating water pump is automatically controlled;
(2) the water level of the circulating water tank is automatically controlled;
(3) the specific conductivity of the circulating water is automatically controlled;
(4) the vacuum of the steam exhaust chamber is automatically controlled;
(5) automatically controlling the water temperature at the inlet of the condenser and the like.
The steam turbine condensate system is composed of condensate pump valve set automatic control, hot well water level automatic control, demineralized water tank water level automatic control and drain tank water level automatic control. The control logic is characterized in that: 8 control subgroups such as condensate pump valve group automatic start/stop, automatic hot well water level input/removal, automatic demineralized water tank water level input/removal, automatic drain tank water level input/removal, wherein each control subgroup starts its inside control breakpoint or control object in proper order, realizes a less control objective, if: automatic control of hot well water level, automatic control of demineralized water tank water level, automatic control of drain tank water level and the like. When the steam turbine condensate system is started, the higher-level scheduling instruction sequentially calls each lower-level sub-control unit, and finally water circulation of the steam turbine system is established; when the steam turbine condensate water system is stopped, the higher-level dispatching instruction sequentially calls the lower-level sub-control units in a reverse order until all the motor equipment is stopped, the valve positions of the valves are in safe and reasonable positions, and the system quits all automation. The stage of investment is automatic:
(1) the water level of the hot well is automatically controlled;
(2) the water level of the demineralized water tank is automatically controlled;
(3) the water level of the drain tank is automatically controlled;
(4) automatically controlling a condensate pump;
(5) the desalting water pump is automatically controlled;
(6) automatic control of the drainage pump, etc.
The deoxygenation water supply system consists of automatic control of water pump valve set, automatic control of water level in deoxygenator, automatic control of pH in water supply main pipe and automatic control of pressure in water supply main pipe. The control logic is characterized in that: the water pump valve group of the water feeding pump is automatically started/stopped, the deaerator water level is automatically switched in/out, the water feeding main pipe is automatically switched in/out in pH value, the water feeding main pipe is automatically switched in/out in pressure, and 8 control sub-components are adopted, wherein each control sub-component sequentially starts the control break point or the control object inside the control sub-component, and a smaller control target is realized, such as: automatic control of deaerator water level, automatic control of water supply main pipe pH, automatic control of water supply main pipe pressure and the like. When the deoxygenation water supply system is started, the higher-level scheduling instructions sequentially call the lower-level sub-control units in sequence, and finally the requirement of meeting the water requirement of the waste heat boiler drum is met; when the deoxygenation water supply system is stopped, the higher-level scheduling instructions sequentially call the lower-level sub-control units in a reverse order until all the motor equipment is stopped and the valve positions of the valves are in safe and reasonable positions, and the system quits all automation. The stage of investment is automatic:
(1) the water level of the deaerator is automatically controlled;
(2) the pH value of the water supply main pipe;
(3) the pressure of the water supply main pipe is automatically controlled;
(4) the water feeding pump is automatically controlled;
(5) the deaerator water-replenishing electric door is automatically controlled;
(6) the water ring vacuum pump is automatically controlled;
(7) automatic control of the ammonia adding device, and the like.
The water feeding of the waste heat boiler drum is formed by automatically controlling the pressure of the outlet of the high-pressure over/low-pressure over header of the kiln head boiler, automatically controlling the water level of the high-pressure/low-pressure drum of the kiln head boiler, automatically controlling the specific conductivity of the high-pressure/low-pressure drum of the kiln head boiler, automatically controlling the pressure of the outlet of the superheater header of the kiln tail boiler, automatically controlling the water level of the drum of the kiln tail boiler and automatically controlling the specific conductivity of the drum of the kiln tail boiler. The control logic is characterized in that: the method comprises 18 control subgroups of automatic input/cut-off of kiln-head boiler high-header outlet pressure, automatic input/cut-off of kiln-head boiler low-header outlet pressure, automatic input/cut-off of kiln-head boiler high-pressure steam drum water level, automatic input/cut-off of kiln-head boiler low-pressure steam drum water level, automatic input/cut-off of kiln-head boiler high-pressure steam drum boiler water specific conductivity, automatic input/cut-off of kiln-head boiler low-pressure steam drum boiler water specific conductivity, automatic input/cut-off of kiln-tail boiler superheater header outlet pressure, automatic input/cut-off of kiln-tail boiler steam drum water level, automatic input/cut-off of kiln-tail boiler steam drum boiler water specific conductivity and the like, wherein each control subgroup sequentially starts an internal control breakpoint or control object to realize a smaller control target, such as: the water level of the high-pressure/low-pressure steam drum of the kiln head boiler is automatically controlled, the water level of the steam drum of the kiln tail boiler is automatically controlled, and the like. Before starting the water supply of the waste heat boiler drum, a kiln head boiler or a kiln tail boiler or two boilers are required to be started at the same time, and a higher-level scheduling instruction can sequentially call each lower-level sub-control unit according to a preset path, so that the automatic water supply control target of the waste heat boiler drum is finally realized; when the exhaust-heat boiler drum is stopped to supply water, the higher-level scheduling instruction calls the lower-level sub-control units in sequence in a reverse order according to a preset path until all the motor equipment is stopped and the valve positions of the valves are in safe and reasonable positions, and the system quits all automation. The stage of investment is automatic:
(1) the outlet pressure of the kiln head boiler higher than the upper part/lower part of the header is automatically controlled;
(2) the high pressure/low pressure steam drum water level of the kiln head boiler is automatically controlled;
(3) the high pressure/low pressure steam pocket continuous discharge of the kiln head boiler is automatically controlled;
(4) automatically controlling the outlet pressure of a superheater header of the kiln tail boiler;
(5) automatically controlling the water level of a steam drum of the kiln tail boiler;
(6) and automatic control of continuous discharge of steam drums of the kiln tail boiler and the like.
The adding of furnace water phosphate is an independent control unit, belonging to a self-circulation breakpoint. The control logic is characterized in that: furnace water phosphate adds 2 control subgroups such as automatic input/excision, automated inspection kiln head boiler high pressure/low pressure steam pocket phosphate concentration and kiln tail boiler steam pocket phosphate concentration, if phosphate concentration is low then start its inside control breakpoint or control object, add the medicine for corresponding steam pocket, realize that the phosphate concentration in the steam pocket is in normal range, if: the high pressure/low pressure steam drum of the kiln head boiler automatically adds medicine, the steam drum of the kiln tail boiler automatically adds medicine, etc.
(1) The high-pressure steam drum phosphate dosing electric door of the kiln head boiler is automatically controlled;
(2) the low-pressure steam drum phosphate dosing electric door of the kiln head boiler is automatically controlled;
(3) the phosphate dosing electric door of the boiler drum at the tail of the kiln is automatically controlled;
(4) automatic control of phosphate dosing pump, etc.
The waste heat boiler ash conveying system is formed by automatic control of a kiln head boiler ash conveying system and automatic control of a kiln tail boiler ash conveying system. The control logic is characterized in that: the automatic start/stop of the kiln head boiler ash conveying system, the automatic start/stop of the kiln tail boiler ash conveying system and other 4 control subgroups, wherein each control subgroup starts the control breakpoint or control object inside the control subgroup in sequence to realize a smaller control target, such as: the automatic control of the kiln head boiler ash conveying system, the automatic control of the kiln tail boiler ash conveying system and the like. Before the waste heat boiler ash conveying system is started, a kiln head boiler or a kiln tail boiler or two boilers are selected to be started at the same time, and a higher-level scheduling instruction can sequentially call each lower-level sub-control unit according to a preset path, so that the automatic control target of the waste heat boiler ash conveying system is finally realized; when the waste heat boiler ash conveying system is stopped, the higher-level dispatching instruction calls the lower-level sub-control units in turn according to the preset path in a reverse order until all the motor equipment stops running and the valve positions of the valves are in safe and reasonable positions, and the system quits all automation. The stage of investment is automatic:
(1) the star-shaped discharger of the kiln head boiler is automatically controlled;
(2) the kiln head boiler chain conveyor is automatically controlled;
(3) the star-shaped discharger of the kiln tail boiler is automatically controlled;
(4) the chain conveyor of the kiln tail boiler is automatically controlled;
(5) and the rapping motor of the kiln tail boiler is automatically controlled, and the like.
The gasoline engine oil system is composed of automatic control of gasoline engine main oil pump outlet oil pressure, automatic control of lubricating oil pressure and automatic control of a barring motor. The control logic is characterized in that: the automatic oil pressure of the main oil pump outlet of the steam engine is automatically switched in/out, the lubricating oil pressure is automatically switched in/out, the barring motor is automatically started/stopped and the like, 6 control subgroups are arranged, wherein each control subgroup sequentially starts the control breakpoint or control object inside the control subgroup, and the automatic oil pressure control target in the oil system is realized, if: the oil pressure of the outlet of the main oil pump of the steam engine is automatically controlled, the lubricating oil pressure is automatically controlled, and the like. When the gasoline system is started, the higher-level scheduling instruction sequentially calls each lower-level sub-control unit, and finally the oil pressure in the gasoline system is controlled within a target range; when the gasoline system is stopped, the dispatching command of the higher level calls the sub-control units of the lower levels in sequence in a reverse order until all the motor equipment stops running, and the system quits all automation. The stage of investment is automatic:
(1) the high-pressure electric oil pump is automatically controlled;
(2) the alternating-current auxiliary oil pump is automatically controlled;
(3) the direct-current auxiliary oil pump is automatically controlled;
(4) the barring motor is automatically controlled;
(5) automatic control of the range hood, etc.
The waste heat boiler smoke and air system is composed of a kiln head boiler smoke and air system and a kiln tail boiler smoke and air system which are automatically controlled. The control logic is characterized in that: the method comprises 14 control subgroups of automatic input/cut-off of a kiln head boiler inlet valve, automatic input/cut-off of a kiln head boiler outlet valve, automatic input/cut-off of a kiln head boiler bypass valve, automatic input/cut-off of a kiln head boiler cold air valve, automatic input/cut-off of a kiln tail boiler inlet valve, automatic input/cut-off of a kiln tail boiler outlet valve, automatic input/cut-off of a kiln tail boiler bypass valve and the like, wherein each control subgroup sequentially starts an internal control breakpoint or control object to realize a smaller control target, and the control subgroups comprise the following steps: the temperature and pressure rising rate of the kiln head boiler is automatically controlled, and the temperature and pressure rising rate of the kiln tail boiler is automatically controlled. Before starting the waste heat boiler smoke and air system, a kiln head boiler or a kiln tail boiler or two boilers are required to be started at the same time, and a higher-level scheduling instruction sequentially calls each lower-level sub-control unit according to a preset path, so that the temperature and pressure rise rate control target of the waste heat boiler is finally realized; when the waste heat boiler smoke and air system is stopped, the higher-level scheduling instruction calls the lower-level sub-control units in turn in a reverse order according to a preset path until all valve positions are in safe and reasonable positions, and the system quits all automation. The stage of investment is automatic:
(1) the inlet valve of the kiln head boiler is automatically controlled;
(2) the outlet valve of the kiln head boiler is automatically controlled;
(3) the kiln head boiler bypass valve is automatically controlled;
(4) the cold air valve of the kiln head boiler is automatically controlled;
(5) automatically controlling an inlet valve of the kiln tail boiler;
(6) the outlet valve of the kiln tail boiler is automatically controlled;
(7) automatically controlling a kiln tail boiler bypass valve, and the like.
The heating pipe is composed of automatic control of kiln head boiler main steam temperature and pressure rising, automatic control of kiln head boiler steam supplement temperature and pressure rising, automatic control of kiln tail boiler main steam temperature and pressure rising, automatic control of steam turbine main steam temperature and pressure rising system and automatic control of steam turbine steam supplement temperature and pressure rising system. The control logic is characterized in that: the method comprises the following steps of automatically switching in/out main steam of a kiln head boiler by means of temperature and pressure rise and automatic switching in/out, automatically switching in/out steam supplement by means of temperature and pressure rise and automatic switching in/out of a kiln head boiler, automatically switching in/out of a steam turbine main steam temperature and pressure rise system, automatically switching in/out of a steam turbine steam supplement temperature and pressure rise system and the like, wherein each control subgroup sequentially starts a control breakpoint or a control object inside the control subgroup, and a smaller control target is achieved, for example: the automatic control of the temperature and pressure rise of the main steam/steam supplement of the kiln head boiler, the automatic control of the temperature and pressure rise of the main steam of the kiln tail boiler, the automatic control of the temperature and pressure rise system of the main steam/steam supplement of the steam turbine and the like. Before starting the heating pipe, a kiln head boiler or a kiln tail boiler or two boilers are required to be started at the same time, and a higher-level scheduling instruction sequentially calls each lower-level sub-control unit according to a preset path, so that the heating pipe target of a steam-water system of a unit is finally realized; when the heating pipes are stopped, the higher-level dispatching instruction calls each lower-level sub-control unit according to a preset path until all valve positions are in safe and reasonable positions, and the system quits all automation. The stage of investment is automatic:
(1) all valves along the main steam/drain pipeline of the kiln head boiler are automatically controlled;
(2) all valves along the steam supplementing/drainage pipeline of the kiln head boiler are automatically controlled;
(3) all valves along the main steam/drain pipeline of the kiln tail boiler are automatically controlled;
(4) all valves along the steam main steam/drain pipeline of the steam turbine are automatically controlled;
(5) and all valves along the steam-water steam-supplementing/drainage pipeline of the steam turbine are automatically controlled, and the like.
The steam turbine vacuum pumping system is composed of a water jet pump set automatic control system, a water jet tank water level automatic control system, a water jet tank temperature automatic control system, a pressure equalizing tank main steam pressure automatic control system, a pressure equalizing tank main steam temperature automatic control system, a pressure equalizing tank steam seal pressure automatic control system and a condenser vacuum automatic control system. The control logic is characterized in that: the method comprises the following steps of automatically starting/stopping a water jet pump valve group, automatically putting in/cutting off a water level of a water jet tank, automatically putting in/cutting off a temperature of the water jet tank, automatically putting in/cutting off main steam pressure of a pressure equalizing box, automatically putting in/cutting off main steam temperature of the pressure equalizing box, automatically putting in/cutting off steam seal pressure of the pressure equalizing box, automatically putting in/cutting off vacuum of a condenser and the like, wherein each control subgroup sequentially starts a control breakpoint or a control object inside the control subgroup to realize the control target or object of a single object, such as: the automatic control of the water level of a water injection tank, the automatic control of the main steam pressure of a pressure equalizing tank, the automatic control of the main steam temperature of the pressure equalizing tank, the automatic control of the vacuum of a condenser and the like. When the steam turbine vacuum pumping system is started, the higher-level scheduling instruction sequentially calls each lower-level sub-control unit, and finally the vacuum value in the system is controlled within a target range; when the steam engine vacuum-pumping system is stopped, the higher-level dispatching instructions sequentially call the lower-level sub-control units in a reverse order until all the motor equipment is stopped, and the system quits all automation until all the valve positions of the valves are at safe and reasonable positions. The stage of investment is automatic:
(1) the water level of the jetting water tank is automatically controlled;
(2) the temperature of the water injection tank is automatically controlled;
(3) the main steam pressure of the pressure equalizing box is automatically controlled;
(4) the temperature of main steam of the pressure equalizing box is automatically controlled;
(5) the vapor seal pressure of the pressure equalizing box is automatically controlled;
(6) automatically controlling the vacuum of the condenser;
(7) automatic control of the shaft seal steam supply valve and the like.
The steam turbine is controlled automatically by the temperature of the steam exhaust chamber, the hanging brake of the steam turbine, the ETS protection system during the steam turbine is controlled automatically during the steam turbine is controlled by the DEH regulation system. The control logic is characterized in that: the method comprises the following steps of automatically switching in/out the temperature of an exhaust chamber, automatically switching in/out a steam turbine hanging brake, automatically switching in/out an ETS protection system, automatically switching in/out a DEH regulation system and the like, wherein each control subgroup sequentially starts a control breakpoint or a control object inside the control subgroup to realize corresponding control targets one by one, and the control targets comprise the following steps: automatic control of exhaust chamber temperature, automatic control of ETS protection system, automatic control of DEH regulation system and the like. When the steam turbine is started to be switched, the higher-level dispatching instruction sequentially calls each lower-level sub-control unit, the DEH regulating system is started to finish the steam turbine switching target, and meanwhile, part of ETS protection systems are selectively put into the DEH regulating system according to the unit characteristics; when the steam turbine is stopped to run, two stopping interfaces are designed for ensuring the safe and stable stopping of the unit: one is a universal shutdown interface and the other is an accident shutdown interface. The general shutdown interface is an interface which needs to be called when the machine is planned to be shut down at ordinary times, receives generator splitting signals or scheduling instructions, and sequentially calls the sub-control units of each lower level in a reverse order, so that the load of the machine set is reduced to a normal shutdown range, and simultaneously, the corresponding ETS switching switches and equipment protection are automatically put into operation until all equipment and valve positions of the valves are in safe and reasonable positions, so that the machine set is ensured to be safely and stably stopped; an accident shutdown interface: and after receiving an ETS action command, a DEH manual stop command and an operation table manual stop command, immediately triggering a generator main protection action signal and the like. Meanwhile, the system quickly self-checks the equipment protection input condition and automatically inputs the disconnected important protection, so that the unit is ensured to be safely and stably stopped. The stage of investment is automatic:
(1) the main valve starts the electromagnetic valve to automatically control;
(2) ETS first-out reset automatic control;
(3) ETS action reset automatic control;
(4) the ETS switching switch is automatically controlled;
(5) the DEH rotating speed is adjusted and automatically controlled;
(6) the electromagnetic valve for reducing the temperature of the steam exhaust pipeline automatically controls;
(7) the high-pressure electric oil pump is automatically controlled;
(8) the alternating-current auxiliary oil pump is automatically controlled;
(9) the direct-current auxiliary oil pump is automatically controlled;
(10) automatic control of turning, etc.
The generator grid-connected system is composed of an excitation system automatic control system, a synchronization device automatic control system, an ETS protection system generator grid-connected system automatic control system and a DEH regulation system generator grid-connected system automatic control system. The control logic is characterized in that: the method comprises 8 control subgroups of automatic input/cut-off of an excitation system, automatic input/cut-off of a synchronous device, automatic input/cut-off of an ETS protection system, automatic input/cut-off of DEH load control and the like, wherein each control subgroup starts a control breakpoint or a control object inside the control subgroup in sequence to jointly achieve the aim of a generator grid-connected system. When the generator grid-connected system is started, the higher-level scheduling instructions sequentially call the lower-level sub-control units, and an electric system (ECS) achieves a grid-connected target; when the generator grid-connected system is stopped, the DEH load control module is called firstly to reduce the load of the unit to be within a normal stop range, then the generator is disconnected and the signal is sent to the DCS, and then the sub-control units of the lower levels are called in sequence in the reverse order until all the electrical equipment are in safe and reasonable positions, and the automatic operation is stopped. The stage of investment is automatic:
(1) the excitation system is automatically controlled;
(2) the synchronization device is automatically controlled;
(3) the ETS switching switch is automatically controlled;
(4) automatic control of DEH load adjustment, and the like.
The above description is only for the embodiments and methods of the present application, and the AWHRS technology is criss-cross, so the text description is difficult to be exhaustive, and the scope of the present application is not limited to the text. All structural and procedural equivalents and changes made by using the teachings of the present application, whether directly or indirectly through the use of techniques in other related fields, are intended to be encompassed by the present application.
Claims (4)
1. The cement waste heat power generation automatic start-stop system is characterized by comprising 13 control system units including a boiler water treatment system, a circulating cooling water system, a steam turbine condensate system, a deoxygenation water supply system, a waste heat boiler drum water supply control system, a boiler water phosphate dosing control system, a waste heat boiler ash conveying system, a steam turbine oil system, a waste heat boiler smoke and air system, a steam turbine heating pipe control system, a steam turbine vacuum pumping system, a steam turbine turning system and a generator grid-connected system, wherein each control system unit comprises a plurality of sub-control units or is an independent control system unit, each sub-control unit and the independent control system unit comprise a plurality of control sub-groups, each control sub-group realizes the control target of the sub-control units by calling control breakpoints or control objects in the sub-control units, and the automatic start-stop system sequentially follows the boiler water treatment system according to preset parameters during starting, Circulating cooling water system, steam turbine condensate system, deoxidization water supply system, exhaust-heat boiler steam drum water feeding control, stove water phosphate medicine control, exhaust-heat boiler ash conveying system, steam engine oil system, exhaust-heat boiler flue gas system, steam engine heating pipe control, steam engine vacuum pumping system, steam engine rush system and generator grid-connected system's order automatic start corresponding equipment, until accomplishing the grid-connected electricity generation of unit, the automatic start-stop system carries out the shut down to each control system unit according to the reverse order of start-up order according to presetting the parameter when shutting down, each control break and the control of equipment are all accomplished based on the distributed control system.
2. The cement waste heat power generation automatic start-stop system realized by adopting the decentralized control system as claimed in claim 1, wherein the boiler water treatment system comprises 4 sub-control units including a primary reverse osmosis water production automatic control unit, a secondary reverse osmosis water production automatic control unit, a multi-medium filter backwashing automatic control unit and an activated carbon filter backwashing automatic control unit, the circulating cooling water system comprises 4 sub-control units including a circulating water pond water level automatic control unit, a circulating water pump valve set automatic control unit, a circulating water specific conductivity automatic control unit and a steam exhaust chamber vacuum automatic control unit, the steam turbine condensate water system comprises 4 sub-control units including a condensate water pump valve set automatic control unit, a hot well water level automatic control unit, a demineralized water tank water level automatic control unit and a drain tank water level automatic control unit, the deoxygenation water supply system comprises a water pump valve set automatic control unit, a water supply pump valve set automatic, The automatic control of deaerator water level, the automatic control of water supply main pipe pH, the automatic control of water supply main pipe pressure totally 4 sub-control units, the control of water supply of waste heat boiler drum includes the automatic control of kiln head boiler high/low over header outlet pressure, the automatic control of kiln head boiler high/low pressure drum water level, the automatic control of kiln head boiler high/low pressure drum boiler water ratio conductivity, the automatic control of kiln tail boiler superheater header outlet pressure, the automatic control of kiln tail boiler drum water level, the automatic control of kiln tail boiler drum boiler water ratio conductivity totally 9 sub-control units, the control of adding furnace water phosphate is an independent control unit, the waste heat boiler ash conveying system includes the automatic control of kiln head boiler ash conveying system, the automatic control of kiln tail boiler ash conveying system totally 2 sub-control units, the turbine oil system includes turbine main oil pump outlet oil pressure automatic control, the automatic control of turbine oil pump, The system comprises 3 sub-control units including automatic control of a kiln head boiler smoke and air system and automatic control of a kiln tail boiler smoke and air system, the waste heat boiler smoke and air system comprises 2 sub-control units including automatic control of a kiln head boiler smoke and air system and automatic control of a kiln tail boiler smoke and air system, the steam engine heating pipe control comprises 5 sub-control units including automatic control of main steam temperature rise and pressure rise of a kiln head boiler, automatic control of main steam temperature rise and pressure rise of a kiln tail boiler, automatic control of a steam engine main steam temperature rise and pressure rise system and automatic control of a steam engine steam supplement temperature rise and pressure rise system, the steam engine vacuumizing system comprises 7 sub-control units including automatic control of a water jet pump set, automatic control of a water jet tank water level, automatic control of a water jet tank temperature, automatic control of main steam pressure of a pressure equalizing tank, automatic control of main steam temperature of the equalizing tank, automatic control of steam seal pressure of the equalizing tank and automatic control of vacuum of, the steam turbine running-in system comprises 4 sub-control units including automatic control of steam exhaust chamber temperature, automatic control of steam turbine hanging brake, automatic control of a steam turbine trip protection system during steam turbine running-in, and automatic control of a steam turbine digital electro-hydraulic regulation system during steam turbine running-in, and the generator grid-connected system comprises 4 sub-control units including automatic control of an excitation system, automatic control of a synchronous device, automatic control of a steam turbine trip protection system during generator grid-connected system, and automatic control of a steam turbine digital electro-hydraulic regulation system during generator grid-connected system.
3. The cement waste heat power generation automatic start-stop system realized by adopting the decentralized control system according to claim 1 or 2, characterized in that each sub-control unit and independent control system unit comprises a corresponding field device system and a field instrument system, the field device system is composed of a field device and a matched electric control system or an independent control system thereof, the field device system receives and executes an instruction sent by a control breakpoint and feeds back a working state to the control breakpoint, the field instrument system is composed of a single independent measuring element or a plurality of instruments combined relatively independent and interconnected multifunctional instrument devices or data acquisition systems, and the field instrument system acquires field production data and updates the data to the control breakpoint in real time.
4. The cement waste heat power generation automatic start-stop system realized by adopting the distributed control system according to claim 1, 2 or 3, wherein the distributed control system comprises a data acquisition and processing system, an analog quantity control system, a sequence control system, a turbine emergency trip system and a turbine digital electric control system.
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| CN201910039670.7A CN111443663A (en) | 2019-01-16 | 2019-01-16 | Cement waste heat power generation self-starting and stopping system realized by adopting decentralized control system |
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| CN201910039670.7A CN111443663A (en) | 2019-01-16 | 2019-01-16 | Cement waste heat power generation self-starting and stopping system realized by adopting decentralized control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882922A (en) * | 2021-09-16 | 2022-01-04 | 华润水泥(陆川)有限公司 | Automatic power generation control system of boiler waste heat |
| CN113900420A (en) * | 2021-10-22 | 2022-01-07 | 中国恩菲工程技术有限公司 | Water ecological digital management and control system and method for metallurgical enterprise |
| CN114063581A (en) * | 2021-11-16 | 2022-02-18 | 西安热工研究院有限公司 | An intelligent adaptive ash conveying control system for coal-fired power station |
-
2019
- 2019-01-16 CN CN201910039670.7A patent/CN111443663A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882922A (en) * | 2021-09-16 | 2022-01-04 | 华润水泥(陆川)有限公司 | Automatic power generation control system of boiler waste heat |
| CN113882922B (en) * | 2021-09-16 | 2024-05-24 | 华润水泥(陆川)有限公司 | Automatic power generation control system for waste heat of boiler |
| CN113900420A (en) * | 2021-10-22 | 2022-01-07 | 中国恩菲工程技术有限公司 | Water ecological digital management and control system and method for metallurgical enterprise |
| CN113900420B (en) * | 2021-10-22 | 2024-05-28 | 中国恩菲工程技术有限公司 | Metallurgical enterprise water ecology digital management and control system and method |
| CN114063581A (en) * | 2021-11-16 | 2022-02-18 | 西安热工研究院有限公司 | An intelligent adaptive ash conveying control system for coal-fired power station |
| CN114063581B (en) * | 2021-11-16 | 2024-01-23 | 西安热工研究院有限公司 | Intelligent adaptive ash conveying control system for coal-fired power plant |
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Application publication date: 20200724 |