CN102966586A - Control method for ventilation system of nuclear power station - Google Patents
Control method for ventilation system of nuclear power station Download PDFInfo
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- CN102966586A CN102966586A CN2012105049091A CN201210504909A CN102966586A CN 102966586 A CN102966586 A CN 102966586A CN 2012105049091 A CN2012105049091 A CN 2012105049091A CN 201210504909 A CN201210504909 A CN 201210504909A CN 102966586 A CN102966586 A CN 102966586A
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Abstract
The invention discloses a control method for a ventilation system of a nuclear power station. The control method comprises an inspection step of inspecting states of the ventilation system and ventilation equipment, a running step of performing a ventilation system starting sequence control process when the ventilation system meets the running conditions, a start alarm step of giving an alarm in 90 seconds when ventilation system sequence starting is of failure and returning to the inspection step, and a reset step of resetting a signal of the ventilation system and inspecting the state of the ventilation equipment. According to the control method, by adopting the sequence control technology for the ventilation system, the operation steps of running staffs are simplified, the error action probability of the running staffs is reduced, the automation level of the system is greatly increased, and the system efficiency is improved.
Description
Technical field
The present invention relates to the nuclear power technology field, relate in particular to a kind of controlling method of Nuclear Power Station Factory Building ventilation system.
Background technique
Along with the development of microelectronics, power electronics, computer and automatic control theory etc., the modern industry automaticity is more and more higher, and sequential control technology is widely used industrial as the part of industrial automation.
Sequence control method is exactly the control technique that control action is carried out one by one according to pre-set order or the order set according to certain logic.Adopt sequence control method, the embodiment of the invention according to the device start of the air supplying and exhausting system in the ventilation system and and the stoppage in transit requirement, the control logic of pre-set equipment, the operations staff only need a button just can make in this ventilation system relevant device according to start, order and the time lag auto-action of stoppage in transit, the operations staff only need monitor whole program implementation situation, and then reduced a large amount of loaded down with trivial details operations of operations staff, avoided operations staff's misoperation.
The Nuclear Power Station Factory Building ventilation system is comprised of two cover supply air systems and exhaust system.Wherein, supply air system comprises four groups of prefilters, three groups of surface coolers (every group of surface cooler forms by two), manually splits leafy adjusting air valve and three gas fans.Exhaust system comprises four groups of prefilters, four groups of highly effective particle filters and two air bells exhausters.
Adopt controlled the individual equipment in the system automatically in the ventilation system, adopts interlocked control to reach the interlocking start and stop of relevant device between each equipment.Interlocked control is a certain parameter when reaching setting value or a certain equipment start-stop or switch, and interlock or locking are to the control of another equipment.
General interlocked control only can satisfy the interlocking start and stop of relevant device.For ventilation system, require ventilation equipment under given conditions according to regular hour, sequence starting with stop, the control system of each equipment is inevitable interrelated, therefore whole ventilated control system is very loaded down with trivial details, the operation and maintenance cost is high, reliability is low, and operations staff's work load is large, the risk of misoperation is high.
Summary of the invention
The technical problem to be solved in the present invention is, for the defective that prior art is very loaded down with trivial details by interlocked control control ventilation system, cost is high, reliability is low, the misoperation risk is high, provides a kind of controlling method of Nuclear Power Station Factory Building ventilation system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of controlling method of nuclear power station ventilation system is provided, comprises:
Check step: ventilation system and ventilation equipment status checkout;
Operating procedure: when ventilation system satisfies operating conditions, carry out ventilation system boot sequence control flow; The ventilation system operating conditions is that ventilation system and ventilation equipment all are in shut down condition, ventilation equipment switch cubicle fault-free signal and the generation of ventilation system alarm free;
Start alert step: described ventilation system sequence starting failure, occur behind the 90s reporting to the police, and the echo check step;
Reset process: the ventilation system signal resets and checks the ventilation equipment state.
Preferably, described ventilation system comprises No. 1 air bells exhauster, No. 1 gas fan, No. 2 air bells exhausters, No. 2 gas fans and No. 3 gas fans; Wherein, No. 2 gas fans and No. 3 gas fans are considered as ventilation equipment, simultaneously start and stop; No. 1 air bells exhauster and No. 1 gas fan are function subgroup 1; Described No. 2 air bells exhausters, No. 2 gas fans and No. 3 gas fans are function subgroup 2.
Preferably, described operating procedure specifically comprises:
S21, ventilation system signal reset, and send the ventilation system sequence starting and allow signal, send ventilation system sequence starting instruction;
S22, when function subgroup 1 satisfies starting condition, sequence starting function subgroup 1; Otherwise redirect starts alert step;
S23, when function subgroup 2 satisfies starting condition, sequence starting function subgroup 2; Otherwise redirect starts alert step.
Preferably, the sequence starting function subgroup 1 of described step S22 comprises:
Judge whether No. 1 air bells exhauster possesses starting condition; If not, then redirect starts alert step; No. 1 air bells exhauster starting condition be ventilation system send the sequence starting order, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, be in automatic mode without single group of sequentially stop transport signal and equipment;
No. 1 air bells exhauster starts, and if not, then redirect starts alert step;
Judge whether No. 1 gas fan possesses starting condition; If not, then No. 1 air bells exhauster stoppage in transit of will behind (t+2) s, interlocking, and redirect starts alert step; No. 1 gas fan starting condition be ventilation system send the sequence starting order, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, without single group of signal of sequentially stopping transport, equipment be in automatic mode, without occurring behind No. 1 air bells exhauster shut down condition feedback, No. 1 air bells exhauster running state feedback ts and without the high signal of indoor and outdoor differential pressure;
No. 1 gas fan starts; If not, then No. 1 air bells exhauster stoppage in transit of will behind (t+2) s, interlocking, and redirect starts alert step;
Preferably, the sequence starting function subgroup 2 of described step S23 comprises:
Judge whether No. 2 air bells exhausters possess starting condition; If not, then redirect starts alert step; No. 2 air bells exhauster starting conditions be ventilation system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, be in automatic mode without single group of sequentially stop transport signal and equipment;
No. 2 air bells exhauster starts; If not, then redirect starts alert step;
Judge whether No. 2 gas fans and No. 3 gas fans possess starting condition; If not, then No. 2 air bells exhausters stoppage in transit of will behind (t+2) s, interlocking, and redirect starts alert step; Described No. 2 gas fans and No. 3 gas fan starting conditions be ventilation system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, without single group of signal of sequentially stopping transport, equipment be in automatic mode, without appearance behind No. 2 air bells exhauster shut down conditions feedbacks, No. 2 air bells exhauster running statees feedback ts and without the high signal of indoor and outdoor differential pressure;
No. 2 air bells exhausters and No. 3 air bells exhausters start; If not, then No. 2 air bells exhausters stoppage in transit of will behind (t+2) s, interlocking, and redirect starts alert step.
The nuclear power station ventilation system stoppage in transit sequence control flow process of the embodiment of the invention comprises:
Stoppage in transit step: when ventilation system satisfies the stoppage in transit condition, carry out ventilation system stoppage in transit sequence control flow process; Ventilation system stoppage in transit condition is that ventilation system and ventilation equipment all are in running state and open signal without plant gate;
Preferably, described stoppage in transit alert step is: ventilation system is stopped transport unsuccessfully, occurs behind the 90s reporting to the police, and returns step inspection step.
The ventilation system stoppage in transit step of the embodiment of the invention is specially:
S31, send the ventilation system order of sequentially stopping transport;
S32, when function subgroup 2 satisfies the stoppage in transit condition, the order function subgroup 2 of stopping transport; Otherwise, redirect stoppage in transit alert step;
S33, when function subgroup 1 satisfies the stoppage in transit condition, the order function subgroup 1 of stopping transport; Otherwise redirect stoppage in transit alert step.
Preferably, the order stoppage in transit function subgroup 2 of described step S32 comprises:
Judge whether No. 2 gas fans and No. 3 gas fans possess the stoppage in transit condition; If not, redirect stoppage in transit alert step then; No. 2 gas fans and No. 3 gas fan stoppage in transit conditions are that sequentially stop transport order, gas fan of ventilation system appearance is in running state and exists without other actuating signal;
No. 2 gas fans and No. 3 gas fans are stopped transport; If not, redirect stoppage in transit alert step then;
Judge whether No. 2 air bells exhausters possess the stoppage in transit condition; If not, because No. 2 gas fans and No. 3 gas fans are stopped transport, No. 2 air bells exhauster signals of stopping transport appear in ventilation system automatic interlock; No. 2 air bells exhauster stoppage in transit conditions be the ventilation system appearance sequentially stop transport order, gas fan be in running state, without other actuating signal exist and No. 2 gas fans and No. 3 gas fan shut down conditions feedback ts after occur;
No. 2 air bells exhauster is stopped transport; If not, redirect stoppage in transit alert step then.
Preferably, the order stoppage in transit function subgroup 1 of described step S33 comprises:
Judge whether No. 1 gas fan possesses the stoppage in transit condition; If not, redirect stoppage in transit step then; No. 1 gas fan stoppage in transit condition is that sequentially stop transport order, gas fan of ventilation system appearance is in running state, exists and No. 2 air bells exhauster shut down conditions feedbacks occur behind ts without other actuating signal;
No. 1 gas fan is stopped transport; If not, redirect stoppage in transit alert step then;
Judge whether No. 1 air bells exhauster possesses the stoppage in transit condition; If not, because No. 1 gas fan is stopped transport, No. 1 air bells exhauster signal of stopping transport appears in ventilation system automatic interlock; No. 1 air bells exhauster stoppage in transit condition be the ventilation system appearance sequentially stop transport order, gas fan be in running state, without other actuating signal exist and No. 1 gas fan shut down condition feedback ts after occur;
No. 1 air bells exhauster is stopped transport.
Implement the technological scheme of the controlling method of nuclear power station ventilation system of the present invention, have following advantage or beneficial effect: by ventilation system is adopted sequential control technology, predigested running personnel operation step, reduce operations staff's malfuncton probability, greatly increase the automatization level of system, improve system effectiveness.
Description of drawings
In order to be illustrated more clearly in the technological scheme of the embodiment of the invention, the accompanying drawing of required use was done simple the introduction during the below will describe embodiment, obviously, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing, in the accompanying drawing:
Fig. 1 is the controlling method embodiment's of nuclear power station ventilation system of the present invention ventilation system boot sequence control flow schematic representation;
Fig. 2 is the controlling method embodiment's of nuclear power station ventilation system of the present invention ventilation equipment start delay logical schematic;
Fig. 3 is that the controlling method embodiment's of nuclear power station ventilation system of the present invention ventilation equipment start the latching logic schematic representation;
Fig. 4 is control logic schematic representation under controlling method embodiment's the special operation condition of nuclear power station ventilation system of the present invention;
Fig. 5 is the controlling method embodiment's of nuclear power station ventilation system of the present invention hand/automatic switchover schematic representation;
Fig. 6 is the controlling method embodiment's of nuclear power station ventilation system of the present invention ventilation system stoppage in transit sequence control flow process schematic representation;
Fig. 7 is the controlling method embodiment's of nuclear power station ventilation system of the present invention stoppage in transit time-delay logical schematic;
Fig. 8 is the logical schematic that No. 1 air bells exhauster of No. 1 gas fan interlocking of the controlling method embodiment of nuclear power station ventilation system of the present invention is stopped transport.
Embodiment
In order to make purpose of the present invention, technological scheme and advantage clearer, the various embodiments that hereinafter will describe will be with reference to corresponding accompanying drawing, these accompanying drawings have consisted of embodiment's a part, have wherein described and have realized the various embodiments that the present invention may adopt.Should understand that also can use other embodiment, the embodiment who perhaps this paper is enumerated carries out the modification on the 26S Proteasome Structure and Function, and can not depart from the scope and spirit of the present invention.
In sequence control method, the action of each equipment can arrange tight interlocked control condition, no matter is automatic sequence control or manually controls single device, as long as the operation condition of equipment does not satisfy, this equipment will be blocked, thereby has further reduced operations staff's misoperation rate.In addition, in sequence control method, also comprised hand/automatic switching function, made things convenient for ventilation system when breaking down, the operations staff can manual intervention, ventilation system is brought into the operating mode of safe operation.
Sequence control method roughly can be divided into 3 to 4 grades of controls, i.e. unit controlled stage, function group controlled stage, function subgroup controlled stage and equipment controlled stage.
(1) unit controlled stage belongs at the highest level in power plant's sequence control.
(2) function group controlled stage; function group controlled stage is that equipment relevant in the system is gathered together by the control interlock requirement; form one independently whole, its function comprises: intrasystem equipment is started or sequence control, interlocked control and the protection of stopping transport are controlled.The mode of operation of function group controlled stage has automatic operation and two kinds of patterns of manually-operable, and its control function comprises: 1. process various analog signalses and switching value signal, and carry out signal processing and distribution; 2. the realization of analyzing logic control function, interlocked control function and protection control function; 3. system mode monitors, alarm signal triggers and monitors; 4. the control of individual equipment; 5. the setting of systematic parameter definite value and default value; 6. the interface configuration of actuator and control system.
(3) function subgroup controlled stage, function subgroup controlled stage is divided into several little control function groups with large function group control.As the supply and exhaust of single group can be used as one independently the function group carry out sequence control, and comprising the relatively independent controlled devices such as gas fan and air bells exhauster in each function group, these relatively independent controlled devices can be used as a function subgroup and carry out the start and stop sequence control.
(4) device level control is the base level of sequence control system, the order that its receiving function subgroup is come, and the control program of operational outfit carries out on off control to equipment.
When the sequence control system of certain function group level placed automated manner, control program was with the in order start and stop of control apparatus.Based on PLC(Programmable Logic Controller, programmable logic controller (PLC)) can there be 2 kinds of typical sequence control modes in system:
(1) step order formula: in a criterion of each program step, include the secondary criterion of previous step, so obvious step order relation is arranged.Control program can be with the output order locking (or not locking) of front any step order, to adapt to the requirement of different controlled devices according to the control requirement when the step, order shifted.
(2) step-by-step movement: the step order management of sequence control is to rely on the stepping link of program control inside to realize.The stepping link is sent step-by-step impulse successively according to initial conditions or set time action, makes the program step order produce jump condition, and the stepping condition is the secondary criterion of each program step.Whether output function instruction of each program step of sequence control except the stepping condition from the stepping link, depends on also whether a criterion in this step possesses, locking output order in the program step conversion.
The key of sequence control method design is:
(1) functional diagram of sequence control method establishment: the sequence control functional diagram is along the core of seeking the controlling method design, programmed function figure need to according to the control requirement of ventilation system and control requirement, controllability and existing operating standard and the operating experience of controlled plant, make the functional diagram of Directorate Of Organization meet service condition and as far as possible simplification of operating procedure.SFC refers to a kind of graphic representation of sequence control, function and the characteristic of description control system.
(2) logic design of sequence control method: when carrying out the sequence control method design; should be taken into account the priority of the chain control of protection and sequence control; sequence control and the relation of automatically regulating, the priority of the manual start and stop of individual equipment, sequence control start and stop, interlock protection start and stop.
Wherein, sequence control refers to the order predesignated according to technique, and under the effect of each input signal, according to the order of internal state and time, each actuator operates automatically in order in process of production.Interlocked control refers to that a certain parameter reaches setting value or a certain equipment opens, stops or during open and close, interlock or locking are to the control of another equipment.
The controlling method of the nuclear power station ventilation system that the embodiment of the invention provides is as follows:
(1) ventilation system sequence starting and stoppage in transit requirement
1. system's boot sequence: No. 1 air bells exhauster → No. 1 gas fan → No. 2 air bells exhauster → No. 2 gas fan/No. 3 gas fans (No. 2 gas fans and No. 3 gas fans can be considered an equipment, simultaneously start and stop);
2. system's stoppage in transit sequentially: No. 2 gas fan/No. 3 gas fan → No. 2 air bells exhauster → No. 1 gas fan → No. 1 air bells exhausters.
(2) ventilation system single group sequence starting and stoppage in transit requirement
With No. 1 air bells exhauster with No. 1 gas fan is made as 1, No. 2 air bells exhauster of function subgroup and No. 2 gas fan/No. 3 gas fans are made as function subgroup 2, each function subgroup requires singly to organize sequence starting and stoppage in transit, and it is 6s that every Fans starts/stop transport blanking time.
(3) system's interlocked control requirement
1. two Fans in the function subgroup 1, any Fans lose the air quantity other Fans of all can interlocking and stop transport;
2. three Fans in the function subgroup 2, any Fans lose air quantity other two Fans of all can interlocking and stop transport.
3. when plant gate was opened, all gas fans were out of service, only had No. 1 air bells exhauster to put into operation; When No. 1 air bells exhauster broke down, system started air bells exhauster automatically No. 2.
The nuclear power station ventilation system of the embodiment of the invention adopts sequence control method, with the equipment sequence starting that reaches the Nuclear Power Station Factory Building vacuum control system and the interlocked control requirement of stopping transport requirement, relevant device, guarantee that the difference in flow of ventilation system is to keep the ventilating plant subnormal ambient.
The sequence control method of the nuclear power station ventilation system that the embodiment of the invention provides is specially:
(1) structure of ventilation system sequence control
According to the structure of the above-mentioned sequence control of mentioning, according to process characteristic and the control requirement of Nuclear Power Station Factory Building ventilation system, the ventilation system sequence control is divided into 3 grades of controls: function group controlled stage, function subgroup controlled stage and equipment controlled stage, wherein,
1. function group controlled stage: in the Nuclear Power Station Factory Building ventilation system, two covers send/and exhaust system namely is made as two function groups.The other equipment to this group of these two function ingredients is controlled, equipment state is monitored, with the function of practical function group.
2. function subgroup controlled stage: the supply and exhaust of single group can be used as one independently the function group carry out sequence control, and comprising the relatively independent controlled devices such as gas fan and air bells exhauster in each row function group, these relatively independent controlled devices can be used as a function subgroup and carry out the start and stop sequence control.
3. device level control: each blowing and discharging fan can be used as one independently control object carry out sequence control, this is the base level of sequence control, the order that its receiving function subgroup is come, the control program of operational outfit carries out on off control to equipment.
(2) the sequence control mode of ventilation system
When the sequence control of certain function group level placed automated manner, control program was with the in order start and stop of control apparatus.According to the control requirement of power house ventilation system, the embodiment of the invention will adopt step-by-step movement sequence control mode.
(3) sequence control of ventilation system design
The sequence control of the nuclear power station ventilation system that the embodiment of the invention provides comprises boot sequence control and two processes of stoppage in transit sequence control, and the below is elaborated to boot sequence control and stoppage in transit sequence control respectively.
The controlling method of nuclear power station ventilation system comprises:
Check step: ventilation system and ventilation equipment status checkout;
Operating procedure: when ventilation system satisfies operating conditions, carry out ventilation system boot sequence control flow;
Stoppage in transit step: when ventilation system satisfies the stoppage in transit condition, carry out ventilation system stoppage in transit sequence control flow process;
Reset process: the ventilation system signal resets and checks the ventilation equipment state.
According to the control requirement of Nuclear Power Station Factory Building ventilation system, intend to adopt step-by-step movement sequence control strategy, the functional diagram of the boot sequence control of the nuclear power station ventilation system that the embodiment of the invention provides as shown in Figure 1, entire flow is:
S1, ventilation system status checkout, the ventilation equipment status checkout; Namely to the gas fan of ventilation system, the inspection of air bells exhauster state, whether be in and stop transport or starting state (inspection step);
Whether S2, ventilation system satisfy operating conditions; If not, then return S1; If then carry out S3; Wherein, the ventilation system operating conditions is that ventilation system and equipment all are in shut down condition, facility switching cabinet fault-free signal and system's alarm free generation;
S3, ventilation system signal reset, and send the ventilation system sequence starting and allow signal, send ventilation system sequence starting instruction;
S4, judge whether No. 1 air bells exhauster possesses starting condition; If not, redirect S0 then; If then carry out S5; Wherein, No. 1 air bells exhauster starting condition be ventilation system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, be in " automatically " pattern without single group of sequentially stop transport signal and equipment;
S5, No. 1 air bells exhauster start (virtual condition), if not, and redirect S0 then; If then carry out S6;
S6, judge whether No. 1 gas fan possesses starting condition, if not, will behind (t+2) s, interlock stoppage in transit and redirect S0 of No. 1 air bells exhauster then; If then carry out S7; Wherein, No. 1 gas fan starting condition be ventilation system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, without single group of signal of sequentially stopping transport, equipment be in " automatically " pattern, without occurring and nothing " indoor and outdoor differential pressure height " signal behind No. 1 air bells exhauster shut down condition feedback, No. 1 air bells exhauster running state feedback ts;
S7, No. 1 gas fan start (virtual condition), if not, and will behind (t+2) s, interlock stoppage in transit and redirect S0 of No. 1 air bells exhauster then; If then carry out S8;
S8, judge whether No. 2 air bells exhausters possess starting condition, if not, redirect S0 then; If then carry out S9; Wherein, No. 2 air bells exhauster starting conditions be ventilation system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, be in " automatically " pattern without single group of sequentially stop transport signal and equipment;
S9, No. 2 air bells exhausters start (virtual condition), if not, and redirect S0 then; If then carry out S10;
S10, judge whether No. 2 gas fans and No. 3 gas fans possess starting condition; If not, then No. 2 air bells exhausters will chain stoppage in transit behind (t+2) s, and redirect S0; If then carry out S11; Wherein, No. 2/3 gas fan starting condition be system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, without single group of signal of sequentially stopping transport, equipment be in " automatically " pattern, without occurring and nothing " indoor and outdoor differential pressure height " signal behind No. 2 air bells exhauster shut down conditions feedbacks, No. 2 air bells exhauster running statees feedback ts;
S11, No. 2 gas fans start (virtual condition) and No. 3 gas fans startups (virtual condition), and if not, then No. 2 air bells exhausters will chain stoppage in transit behind (t+2) s, and redirect S0; If then carry out S12;
S12, ventilation system signal reset, and check the ventilation equipment state.
Wherein, step S0 is:
S0, ventilation system sequence starting failure occur behind the 90s reporting to the police, and return step S1.
The logical interlock of the boot sequence control of the nuclear power station ventilation system that the embodiment of the invention provides is designed to:
At this function subgroup 1 is set forth as object, most of situation of function subgroup 2 is similar to function subgroup 1, so wouldn't discuss.
1. the logic design of delaying time
In the start-up course, the boot sequence of blower fan is No. 1 air bells exhauster → No. 1 gas fan → No. 2 air bells exhauster → No. 2 gas fan/No. 3 gas fans, therefore except No. 1 air bells exhauster, the startup of all the other blower fans all needs to adopt the feedback of status of last Fans and increases delay function, the time that postpones is the blanking time (as shown in Figure 2) between the startup of two Fans, supply air system starts the permission signal, systematic order starts (10s afterwards delays time) and No. 1 gas fan enable state feedback is got with rear, and supply air system starts the permission signal, No. 1 gas fan enable state feedback and function subgroup 1 be single organize sequence starting order (10s afterwards delays time) get get with, both results or after send the gas fan startup command No. 1.
Latching logic when 2. starting
In the start-up course, because No. 1 air bells exhauster is subject to the state interlocking of No. 1 gas fan.Control requires regulation, stop transport No. 1 air bells exhauster of will interlocking of No. 1 gas fan is stopped transport, therefore, in normal start-up course, if not to the shut down condition signal block of No. 1 gas fan, then can cause starting No. 1 air bells exhauster (as shown in Figure 3), No. 1 gas fan shut down condition feedback, plant gate is opened with No. 1 air bells exhauster enable state feedback get with after send the order of stopping transport of No. 1 air bells exhauster.
3. control logic design under the special operation condition
When plant gate was opened, all gas fans were out of service, only had No. 1 air bells exhauster to put into operation.When No. 1 air bells exhauster broke down, system started air bells exhauster automatically No. 2.
When special operation condition occurs, system's supply air system is out of service, therefore, can realize by adopting triggering " supply air system is out of service " order, for No. 1 air bells exhauster operation, then need to judge whether that according to the state of No. 1 blower fan needs start No. 1 air bells exhauster automatically, when No. 1 air bells exhauster can not start for a certain reason, need automatically to start No. 2 air bells exhausters (as shown in Figure 4).
4. hand/automatic switchover
For one of necessary functions in the sequence control system, hand/automatic switchover is indispensable.Hand/automatic switching function provides multiple operational means, carries out manual intervention (as shown in Figure 5) when making things convenient for the system failure.
The stoppage in transit sequence control of the nuclear power station ventilation system that the embodiment of the invention provides be boot sequence control conversely, the functional diagram of the stoppage in transit sequence control of the nuclear power station ventilation system that the embodiment of the invention provides as shown in Figure 6, concrete steps are as follows:
S101, ventilation system status checkout, the ventilation equipment status checkout;
Whether S102, ventilation system satisfy the stoppage in transit condition; If not, then return S101; If then carry out S103; Wherein, ventilation system stoppage in transit condition is that system equipment all is in running state and opens signal without plant gate;
S103, send the ventilation system instruction of sequentially stopping transport;
S104, judge whether No. 2/3 gas fan (being No. 2 gas fans and No. 3 gas fans) possesses the stoppage in transit condition; If not, redirect S100 then; If then carry out S105; Wherein, No. 2/3 gas fan stoppage in transit condition is that sequentially stop transport order, gas fan of system's appearance is in running state and exists without other actuating signal;
S105, No. 2/3 gas fan are stopped transport (virtual condition), if not, and redirect S100 then; If then carry out S106; Wherein, the running state of gas fan stoppage in transit (virtual condition) expression gas fan reality.
S106, judge whether No. 2 air bells exhausters possess the stoppage in transit condition, if not, then because No. 2/3 gas fan is stopped transport, No. 2 air bells exhauster signals of stopping transport appear in system's automatic interlock, and redirect S107; If then carry out S107; Wherein, No. 2 air bells exhauster stoppage in transit conditions be system's appearance sequentially stop transport order, gas fan be in running state, without other actuating signal exist and No. 2/3 gas fan shut down condition feedback ts after occur;
S107, No. 2 air bells exhausters are stopped transport (virtual condition), if not, and redirect S100 then; If then carry out S108;
S108, judge whether No. 1 gas fan possesses the stoppage in transit condition, if not, redirect S100 then; If then carry out S109; Wherein, No. 1 gas fan stoppage in transit condition is that sequentially stop transport order, gas fan of system's appearance is in running state, exists and No. 2 air bells exhauster shut down conditions feedbacks occur behind t s without other actuating signal;
S109, No. 1 gas fan are stopped transport (virtual condition), if not, and redirect S100 then; If then carry out S110;
S110, judge whether No. 1 air bells exhauster possesses the stoppage in transit condition; If not, then because No. 1 gas fan is stopped transport, and No. 1 air bells exhauster signal of stopping transport appears in ventilation system automatic interlock, and carry out S111; If then carry out S111; Wherein, No. 1 air bells exhauster stoppage in transit condition be system's appearance sequentially stop transport order, gas fan be in running state, without other actuating signal exist and No. 1 gas fan shut down condition feedback ts after occur;
S111, No. 1 air bells exhauster are stopped transport (virtual condition), if not, and redirect S100 then; If then carry out S112;
S112, ventilation system signal reset, and check the ventilation equipment state.
Wherein, step S100 is:
The failure of sequentially stopping transport of S100, ventilation system occurs behind the 90s reporting to the police, and returns step S101.
The nuclear power station ventilation system stoppage in transit sequence control Interlocking System that the embodiment of the invention provides is:
Set forth as object with function subgroup 1, most of situation of function subgroup 2 is similar to function subgroup 1, so wouldn't discuss.
1. the logic design of delaying time
In the stoppage in transit process, the order of the stoppage in transit of blower fan is No. 2 gas fan/No. 3 gas fan → No. 2 air bells exhauster → No. 1 gas fan → No. 1 air bells exhausters, therefore except No. 2 gas fan/No. 3 gas fans, the stoppage in transit of all the other blower fans all needs to adopt the shut down condition feedback of last Fans and increase delay function, and the time of delay is the blanking time (as shown in Figure 7) between the stoppage in transit of two Fans.
2. a Fans another Fans stoppage in transit logic of interlocking of stopping transport in the function subgroup 1
Because the air bells exhauster in the function subgroup 1 is as the starting point of sequence starting, therefore, the logic that No. 1 air bells exhauster of No. 1 gas fan stoppage in transit interlocking is stopped transport need to arrange latching logic.By No. 1 air bells exhauster stop transport logic that No. 1 gas fan of interlocking stops transport only need one simple " with " logic can realize (as shown in Figure 8).
Adopt sequential control technology in the Nuclear Power Station Factory Building vacuum control system, predigested running personnel operation step has reduced operations staff's malfuncton probability, greatly increases the automatization level of system, improves system effectiveness.
The above only is preferred embodiment of the present invention, and those skilled in the art know, in the situation that does not break away from the spirit and scope of the present invention, can carry out various changes or be equal to replacement these features and embodiment.In addition, under instruction of the present invention, can make amendment to adapt to concrete situation and material to these features and embodiment and can not break away from the spirit and scope of the present invention.Therefore, the present invention is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiments of claim scope that fall into the application belong to protection scope of the present invention.
Claims (10)
1. the controlling method of a nuclear power station ventilation system is characterized in that, comprising:
Check step: ventilation system and ventilation equipment status checkout;
Operating procedure: when described ventilation system satisfies operating conditions, carry out described ventilation system boot sequence control flow; Described ventilation system operating conditions is that described ventilation system and ventilation equipment all are in shut down condition, described ventilation equipment switch cubicle fault-free signal and the generation of described ventilation system alarm free;
Start alert step: described ventilation system sequence starting failure, occur behind the 90s reporting to the police, and the echo check step;
Reset process: described ventilation system signal resets and checks described ventilation equipment state.
2. nuclear power station ventilation system controlling method according to claim 1 is characterized in that, described ventilation system comprises No. 1 air bells exhauster, No. 1 gas fan, No. 2 air bells exhausters, No. 2 gas fans and No. 3 gas fans;
Described No. 2 gas fans and No. 3 gas fans are considered as ventilation equipment, simultaneously start and stop;
Described No. 1 air bells exhauster and No. 1 gas fan are function subgroup 1; Described No. 2 air bells exhausters, No. 2 gas fans and No. 3 gas fans are function subgroup 2.
3. nuclear power station ventilation system controlling method according to claim 2 is characterized in that described operating procedure specifically comprises:
S21, described ventilation system signal reset, and send the ventilation system sequence starting and allow signal, send ventilation system sequence starting instruction;
S22, when described function subgroup 1 satisfies starting condition, the described function subgroup 1 of sequence starting; Otherwise redirect starts alert step;
S23, when described function subgroup 2 satisfies starting condition, the described function subgroup 2 of sequence starting; Otherwise the described startup alert step of redirect.
4. nuclear power station ventilation system controlling method according to claim 3 is characterized in that, the described function subgroup 1 of the sequence starting of described step S22 comprises:
Judge whether described No. 1 air bells exhauster possesses starting condition; If not, the described startup alert step of redirect then; Described No. 1 air bells exhauster starting condition be described ventilation system send the sequence starting order, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, be in automatic mode without single group of sequentially stop transport signal and equipment;
Described No. 1 air bells exhauster starts, if not, and the described startup alert step of redirect then;
Judge whether described No. 1 gas fan possesses starting condition; If not, will behind (t+2) s, interlock stoppage in transit and the described startup alert step of redirect of described No. 1 air bells exhauster then; Described No. 1 gas fan starting condition be described ventilation system send the sequence starting order, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, without single group of signal of sequentially stopping transport, equipment be in automatic mode, without occurring behind No. 1 air bells exhauster shut down condition feedback, No. 1 air bells exhauster running state feedback t s and without the high signal of indoor and outdoor differential pressure;
Described No. 1 gas fan starts; If not, will behind (t+2) s, interlock stoppage in transit and the described startup alert step of redirect of described No. 1 air bells exhauster then.
5. nuclear power station ventilation system controlling method according to claim 3 is characterized in that, the described function subgroup 2 of the sequence starting of described step S23 comprises:
Judge whether described No. 2 air bells exhausters possess starting condition; If not, the described startup alert step of redirect then; Described No. 2 air bells exhauster starting conditions be described ventilation system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, be in automatic mode without single group of sequentially stop transport signal and equipment;
Described No. 2 air bells exhausters start; If not, the described startup alert step of redirect then;
Judge whether described No. 2 gas fans and No. 3 gas fans possess starting condition; If not, will behind (t+2) s, interlock stoppage in transit and the described startup alert step of redirect of described No. 2 air bells exhausters then; Described No. 2 gas fans and No. 3 gas fan starting conditions be described ventilation system send sequence starting allow signal, without the equipment failure signal, without system's stoppage in transit signal, without systematic order stoppage in transit signal, without single group of signal of sequentially stopping transport, equipment be in automatic mode, without appearance behind No. 2 air bells exhauster shut down conditions feedbacks, No. 2 air bells exhauster running statees feedback t s and without the high signal of indoor and outdoor differential pressure;
Described No. 2 air bells exhausters and No. 3 air bells exhausters start; If not, will behind (t+2) s, interlock stoppage in transit and the described startup alert step of redirect of described No. 2 air bells exhausters then.
6. nuclear power station ventilation system controlling method according to claim 2 is characterized in that, also comprises:
Stoppage in transit step: when described ventilation system satisfies the stoppage in transit condition, carry out described ventilation system stoppage in transit sequence control flow process; Described ventilation system stoppage in transit condition is that described ventilation system and ventilation equipment all are in running state and open signal without plant gate.
7. nuclear power station ventilation system controlling method according to claim 6 is characterized in that, also comprises:
The stoppage in transit alert step: described ventilation system is stopped transport unsuccessfully, occurs behind the 90s reporting to the police, and returns step inspection step.
8. nuclear power station ventilation system controlling method according to claim 7 is characterized in that, described stoppage in transit step specifically comprises:
S31, send the order of sequentially stopping transport of described ventilation system;
S32, when described function subgroup 2 satisfies the stoppage in transit condition, the order described function subgroup 2 of stopping transport; Otherwise, redirect stoppage in transit alert step;
S33, when described function subgroup 1 satisfies the stoppage in transit condition, the order described function subgroup 1 of stopping transport; Otherwise the described stoppage in transit alert step of redirect.
9. nuclear power station ventilation system controlling method according to claim 7 is characterized in that, the order of the described step S32 described function subgroup 2 of stopping transport comprises:
Judge whether described No. 2 gas fans and No. 3 gas fans possess the stoppage in transit condition; If not, the described stoppage in transit alert step of redirect then; Described No. 2 gas fans and No. 3 gas fan stoppage in transit conditions are that sequentially stop transport order, gas fan of described ventilation system appearance is in running state and exists without other actuating signal;
Described No. 2 gas fans and No. 3 gas fans are stopped transport; If not, the described stoppage in transit alert step of redirect then;
Judge whether described No. 2 air bells exhausters possess the stoppage in transit condition; If not, because described No. 2 gas fans and No. 3 gas fans are stopped transport, the described No. 2 air bells exhauster signals of stopping transport appear in described ventilation system automatic interlock; Described No. 2 air bells exhauster stoppage in transit conditions be described ventilation system appearance sequentially stop transport order, gas fan be in running state, without other actuating signal exist and described No. 2 gas fans and No. 3 gas fan shut down conditions feedback t s after occur;
Described No. 2 air bells exhausters are stopped transport; If not, the described stoppage in transit alert step of redirect then.
10. nuclear power station ventilation system controlling method according to claim 7 is characterized in that, the order of the described step S33 described function subgroup 1 of stopping transport comprises:
Judge whether described No. 1 gas fan possesses the stoppage in transit condition; If not, the described stoppage in transit step of redirect then; Described No. 1 gas fan stoppage in transit condition is that sequentially stop transport order, gas fan of described ventilation system appearance is in running state, exists and No. 2 air bells exhauster shut down conditions feedbacks occur behind t s without other actuating signal;
Described No. 1 gas fan is stopped transport; If not, the described stoppage in transit alert step of redirect then;
Judge whether described No. 1 air bells exhauster possesses the stoppage in transit condition; If not, because described No. 1 gas fan is stopped transport, the described No. 1 air bells exhauster signal of stopping transport appears in described ventilation system automatic interlock; Described No. 1 air bells exhauster stoppage in transit condition be described ventilation system appearance sequentially stop transport order, gas fan be in running state, without other actuating signal exist and No. 1 gas fan shut down condition feedback t s after occur;
Described No. 1 air bells exhauster is stopped transport.
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| CN105201808A (en) * | 2015-10-22 | 2015-12-30 | 中国神华能源股份有限公司 | Pump controller, PLC platform and sea water desalting plant |
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| CN109915980B (en) * | 2019-03-15 | 2021-04-23 | 广东核电合营有限公司 | Nuclear power plant nuclear auxiliary factory building ventilation system |
| CN109915980A (en) * | 2019-03-15 | 2019-06-21 | 广东核电合营有限公司 | Nuclear power plant's nuclear auxiliary building ventilating system |
| CN110567117A (en) * | 2019-08-29 | 2019-12-13 | 苏州热工研究院有限公司 | interlocking control device and method applied to air supply system |
| CN110937097A (en) * | 2019-12-24 | 2020-03-31 | 中国铁建港航局集团有限公司 | Cabin frequency conversion ventilation system |
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| CN113839548A (en) * | 2021-09-07 | 2021-12-24 | 广东电网有限责任公司广州供电局 | Method and controller for controlling starting and stopping of converter valve group |
| CN113839548B (en) * | 2021-09-07 | 2023-08-08 | 广东电网有限责任公司广州供电局 | Method and controller for controlling start-up and shutdown of converter valve group |
| CN116858440A (en) * | 2023-09-05 | 2023-10-10 | 百穰新能源科技(深圳)有限公司 | Leakage detection method and device, leakage disposal method and device, and processing system |
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Address after: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee after: CHINA GENERAL NUCLEAR POWER Corp. Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Address before: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. Patentee before: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. |
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Address after: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Address before: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Patentee before: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. |
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