CN105355241A - Overpressure protection system and method of cold functional test in nuclear power plant - Google Patents
Overpressure protection system and method of cold functional test in nuclear power plant Download PDFInfo
- Publication number
- CN105355241A CN105355241A CN201510690719.7A CN201510690719A CN105355241A CN 105355241 A CN105355241 A CN 105355241A CN 201510690719 A CN201510690719 A CN 201510690719A CN 105355241 A CN105355241 A CN 105355241A
- Authority
- CN
- China
- Prior art keywords
- overpressure protection
- nuclear power
- power plant
- pressure
- primary ioops
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/08—Regulation of any parameters in the plant
- G21D3/12—Regulation of any parameters in the plant by adjustment of the reactor in response only to changes in engine demand
- G21D3/14—Varying flow of coolant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Embodiments of the invention disclose an overpressure protection system and method of a cold functional test in a nuclear power plant. The system comprises a pressure transmitter, an actuating mechanism and a DCS system. The pressure transmitter is used for detecting a pressure value of a circuit and sending a detection signal to the DCS system. The DCS system is used for generating an output signal according to the detection signal and sending the output signal to the actuating mechanism. The actuating mechanism is used for actuating overpressure protective action according to the output signal. The overpressure protection system of the cold functional test in the nuclear power plant is established by the innate DCS system of the nuclear power plant, the acquisition of the special and expensive simulation device for performing the cold functional test is avoided, the cost is reduced effectively, and the temporary device resource of the engineering is saved. Moreover, the wiring of the devices such as the DCS system, the actuating mechanism and the pressure transmitter mainly uses the existing formal cable of the nuclear power plant, so that the quantity of the temporary cable is reduced greatly, and the wire-connecting and wire-disconnecting times are reduced.
Description
Technical field
The present invention relates to nuclear power field, particularly relate to a kind of overpressure protection system and method for nuclear power plant cold-state function test.
Background technology
Nuclear power plant cold-state function test, also claims Primary hydraulic test, is to carry out the hydraulic testing to the pressure-bearing boundary of the primary Ioops system be made up of pressure vessel and connected pipeline thereof.During test, primary Ioops is suppressed target pressure value (such as first Primary hydraulic test time it is 1.25 times of primary Ioops design pressure, periodically be again 1.2 times of primary Ioops design pressure during test), to verify whether the bearing capacity of primary Ioops system under normal operation and accident conditions meets design requirement.In process of the test, first progressively boost, and on 27bar, 70bar, 100bar, 154bar, 165bar, 172bar and 228bar pressure platform, stop the operation implementing leakage detection and miscellaneous stipulations, then progressively step-down, and stop at 172bar, 165bar, 154bar and 27bar pressure with the operation implementing leakage detection and miscellaneous stipulations.
Overpressure protection system is used in Primary hydraulic test process, guaranteeing the stable of each pressure platform and starting decompression or panalarm when superpressure, as opened blowdown valve, stoppage in transit hydraulic testpump and sending warning etc.Existing overpressure protection system is built by expensive dedicated emulated equipment, a small amount of gadget such as relay and temporary cable.All need during each cold conditions function test to build overpressure protection system temporarily, and remove after test completes, therefore take more gadget resource.In addition; special emulator adopts temporary source to power; easily bring dead electricity risk, the overpressure protection picture of emulator cannot react the real-time status of field apparatus, and power station computerized information and control system (KIC) picture do not possess can operating function.
Summary of the invention
Embodiment of the present invention technical matters to be solved is; for the above-mentioned defect of the overpressure protection system of existing nuclear power plant cold-state function test, provide a kind of overpressure protection system based on the nuclear power plant cold-state function test of DCS system (Digitizing And Control Unit) and method.
In order to solve the problems of the technologies described above, on the one hand, embodiments provide a kind of overpressure protection system of nuclear power plant cold-state function test, comprise pressure unit, topworks and DCS system;
Detection signal for detecting the force value of primary Ioops, and is sent to DCS system by described pressure unit; Described DCS system is used for producing according to described detection signal outputing signal and being sent to topworks; Described topworks is used for performing overpressure protection action according to described output signal.
Preferably, described DCS system comprises superpressure processing module, supervisory work module and display module;
Described superpressure processing module for receiving the detection signal of described pressure unit, and produces corresponding control signal according to predetermined overpressure protection flow process and is sent to topworks; Described supervisory work module in real time can operation monitoring picture for what provide field apparatus; Described display module is used for providing the display frame of primary Ioops pressure.
Preferably, described supervisory work module and display module are integrated in power station computerized information and control system; Can operation monitoring picture and the display frame of described primary Ioops pressure described in changeable display in described computerized information and control system.
Preferably, described superpressure processing module is the processor of DCS system; Described power station computerized information and control system are the upper systems based on processor.
Preferably, describedly operation on operation monitoring picture the input/excision of parameter adjustment and pressure unit can be comprised.
Preferably, a control station in DCS system and described pressure unit and topworks is selected to form described overpressure protection system particularly; Realized counting less of monitoring function by the control station selected and affect little on the process system of cold conditions function test.
Preferably, described DCS system is with hard wired mode and equipment connection, and described hardwire, based on the signal cable adopting the formal cable of nuclear power plant core for subsequent use and stop using during using cold conditions function test, is auxiliary with temporary cable.
Preferably, the described topworks hydraulic testpump that comprises the blowdown valve being arranged in primary Ioops, the sound and light alarm equipment being positioned at master-control room and be positioned at safety injection system pump house.
Preferably, described overpressure protection system also comprise be positioned at safety injection system pump house, for showing the registering instrument of hydraulic pressure detected value;
Described output signal comprises the digital signal being sent to described topworks and the simulating signal being sent to described registering instrument and non-security level cabinet system.
Preferably, the quantity of described pressure unit is multiple, at different pressure ranges for described DCS system provides described detection signal, and then trigger different described topworks actions.
On the other hand, embodiments provide a kind of overpressure protection method of nuclear power plant cold-state function test, comprise the following steps:
S1, DCS system receive the detection signal from pressure unit, and described detection signal reacts the force value of the primary Ioops detected by described pressure unit;
S2, DCS system produce output signal according to described detection signal;
Described output signal is sent to topworks to perform overpressure protection action by S3, DCS system, thus according to the current residing pressure platform of cold conditions function test, reduces primary Ioops force value and/or send warning.
Preferably, described step S2 comprises the following steps:
S21, produce corresponding control signal according to described detection signal and predetermined overpressure protection flow process;
S22, field apparatus is provided in real time can operation monitoring picture;
S23, display primary Ioops pressure.
Preferably, described step S22 also comprises: the input receiving user, described input comprises the input/excision of parameter adjustment and pressure unit.
Preferably, also comprised before described step S1:
S0, described DCS system is connected to equipment in hard wired mode, described hardwire, based on the signal cable of stopping using during adopting the formal cable of nuclear power plant core for subsequent use and using cold conditions function test, is auxiliary with temporary cable.
Preferably, the overpressure protection action performed in described step S3 comprises:
S31, when the first pressure platform, open residual heat removal system blowdown valve to reduce primary Ioops force value;
S32, when the second pressure platform, open safety injection system blowdown valve to reduce primary Ioops force value;
S33, when the 3rd pressure platform, stoppage in transit primary Ioops hydraulic pressure test pump is to reduce primary Ioops force value;
S34, when the 4th pressure platform, master-control room produce sound and light alarm; And
S35, when the 5th pressure platform, open safety injection system blowdown valve to reduce primary Ioops pressure.
Implement the embodiment of the present invention; there is following beneficial effect: the overpressure protection system of the application by adopting the intrinsic DCS system of nuclear power plant to build nuclear power plant cold-state function test; avoiding the emulator in order to carry out cold conditions function test and special acquisition price costliness, effectively reducing cost and having saved engineering gadget resource.And the wiring of DCS system and the equipment such as topworks and pressure unit mainly adopts the existing formal cable of nuclear power plant, greatly reduces temporary cable quantity, decreases wiring and clearing time.Due to the formal equipment that DCS system is nuclear power plant; therefore without the need to removing overpressure protection system after cold conditions function test completes; and then rebuild overpressure protection system when avoiding next cold conditions function test, save a large amount of human and material resources, effectively shorten the cold conditions function test cycle.In addition, adopt DCS system that overpressure protection picture can be provided in real time to reflect the state of field apparatus, exercisable KIC monitoring image can also be provided.Finally, the DCS system of the application is powered by the formal electricity consumption of nuclear power plant, without the need to adopting temporary source, avoids the safety problem bringing system instability because temporary source is unstable.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the first embodiment overpressure protection system block diagram provided by the invention;
Fig. 2 is the second embodiment overpressure protection system block diagram provided by the invention;
Fig. 3 is the 3rd embodiment overpressure protection system structural representation provided by the invention;
Fig. 4 is that overpressure protection can operation monitoring picture view;
Fig. 5 is primary Ioops pressure display frame schematic diagram;
Fig. 6 is overpressure protection method flow diagram provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 shows the overpressure protection system 100 of the first embodiment nuclear power plant cold-state function test provided by the invention, comprise connect successively pressure unit 1, DCS system (Digitizing And Control Unit) 2 and topworks 3.The principle of work of this overpressure protection system is as follows: pressure unit 1 detects the force value of primary Ioops; and detection signal is sent to DCS system 2; DCS system 2 and then produce according to the detection signal of pressure unit 1 and output signal and be sent to topworks 3, topworks 3 is according to the output signal execution overpressure protection action of DCS system 2.Pressure unit 1 refers to export the pressure transducer into standard signal, is a kind ofly to accept the instrument that pressure variations is converted to standard output signals in proportion.The fluid pressure parameter that load cell can be experienced by it is transformed into the electric signal (as 4 ~ 20mADC etc.) of standard, processes to supply DCS system 2.The overpressure protection system of the application by adopting the intrinsic DCS system of nuclear power plant to build nuclear power plant cold-state function test; avoiding the emulator in order to carry out cold conditions function test and special acquisition price costliness, effectively reducing cost and having saved engineering gadget resource.Due to the formal equipment that DCS system is nuclear power plant; therefore without the need to removing overpressure protection system after cold conditions function test completes; and then rebuild overpressure protection system when avoiding next cold conditions function test, save a large amount of human and material resources, effectively shorten the cold conditions function test cycle.Finally, due in nuclear power station, DCS system is powered by the formal electricity consumption of nuclear power plant, and therefore the overpressure protection system of the application is without the need to adopting temporary source, avoids the safety problem bringing system instability because temporary source is unstable.
As shown in Figure 2, on the basis of above-described embodiment, preferably, DCS system 2 comprises superpressure processing module 21, supervisory work module 22 and display module 23.Superpressure processing module 21 for receiving the detection signal of described pressure unit, and produces corresponding control signal according to predetermined overpressure protection flow process and is sent to topworks.Supervisory work module 22 in real time can operation monitoring picture for what provide field apparatus.Display module 23 is for providing the display frame of primary Ioops pressure.According to the requirement of nuclear power plant's cold conditions functional realiey, the predetermined overpressure protection flow process in superpressure processing module 21 must realize following overpressure protection function:
The first, before leaving 27bar platform, residual heat removal system (RRA) is in the state of putting into operation, and now the pressure protect of primary Ioops is realized by the blowdown valve of RRA system;
The second, when primary Ioops pressure is between 27bar.g-154bar.g, overpressure protection is by opening safety injection system blowdown valve, and pressure release to middle pressure Safety Injection case pipeline realizes;
3rd, when primary Ioops pressure is between 154bar.g-228bar.g, overpressure protection is realized by stoppage in transit Primary hydraulic test pump;
4th, when primary Ioops pressure is more than 158bar.g, when primary Ioops pressure and overpressure protection loop pressure reduction are more than 0bar, master-control room produces sound and light alarm;
5th, when primary Ioops pressure is greater than 232bar.g, safety injection system blowdown valve is opened rapidly, realizes overpressure protection.
By implementing the present embodiment, providing overpressure protection picture to reflect the situation of field apparatus, exercisable monitoring image can also be provided, and then substantially increase the intellectuality of overpressure protection system and the reliability of overpressure protection, obtain better Consumer's Experience.
Fig. 3 shows another preferred embodiment overpressure protection system schematic diagram provided by the invention.As shown in Figure 3, overpressure protection system comprises the pressure unit 1 of the force value of the voltage stabilizer P1 for detecting primary Ioops, superpressure processing module 21, KIC system (power station computerized information and control system) 4, KCP system (non-security level cabinet system) 5, field recorder 6 and topworks 3.Wherein, KIC system is can operation monitoring system, and incision/excision unit 41 is parts of KIC system, and incision/excision unit 41, in order to more clearly set forth the principle of work of overpressure protection system, is listed separately by this schematic diagram artificially.In actual product, what incision/excision unit 41 can be embodied as KIC system 4 can a quick botton on operation monitoring picture.In addition, superpressure processing module 21 is processors of DCS system, and KIC system is the upper system based on processor, can operation monitoring picture and the display frame of primary Ioops pressure for display.These two pictures can switch display mutually.In nuclear power station, processor 21, KIC system 4 and KCP system 5 are all the intrinsic parts of DCS system.The principle of work of the present embodiment overpressure protection system is as follows:
Pressure unit 1 detects in real time the force value on primary Ioops voltage stabilizer P1, then detection signal is sent to processor 21, and processor 21 produces corresponding control signal according to the overpressure protection flow process be preset at wherein and is sent to topworks 3 and carries out overpressure protection; In KIC system 4, display can operation monitoring picture and the display frame of primary Ioops pressure, and testing crew can realize parameter adjustment (as the adjustment parameter of pressure unit 1 and the parameter of threshold triggers unit XU1 ~ XU5) by operation in KIC system 4 and be selected incision by incision/excision unit 41 or excised a certain or some pressure unit; Force value on pressure unit 1 can also be delivered in field recorder 6 and KCP system 5 and show.
Below by each module of introducing in detail in Fig. 3 and system.
Pressure unit 1 comprises 4 pressure gauge T1 ~ T4 be arranged in parallel, and these 4 pressure gauges are all for measuring the pressure of the voltage stabilizer P1 of primary Ioops.Wherein, pressure gauge T3 is a piston gage, with pressure gauge T3 with the use of also comprise pressure gauge PG1.Its principle of work is: regulate the differential pressure of pressure gauge T3 to export by the counterweight adding different quality on pressure gauge PG1.Also show 2 for measuring master gauge, the wobble pump of the pressure on voltage stabilizer P1 and being connected to voltage stabilizer P1 and the valve V1 ~ V10 between master gauge, pressure unit 1 and wobble pump in accompanying drawing 3.
The detection signal that pressure gauge T1 ~ T4 exports is input in the processor 21 of DCS system respectively by 4 analog input interface AI1 ~ AI4 of DCS system.In order to realize the overpressure protection function of first to the 5th that describes in a upper embodiment, in processor 21, carry out corresponding Logical Configuration.As shown in Figure 3, processor 21 comprises 5 threshold triggers unit XU1 ~ XU5, and these 5 threshold triggers unit are used for being triggered when the detection signal received reaches the threshold value of setting, and export a digital signal.Wherein, the output terminal of analog input interface AI1 is connected to threshold triggers unit XU1 and XU2.The output terminal of analog input interface AI2 is connected to threshold triggers unit XU5.The output terminal of analog input interface AI3 is connected to threshold triggers unit XU3 and XU4.The output terminal of analog input interface AI4 is connected to the analog signal output interface AO3 of DCS system, and then is connected to field recorder 6 to show the force value of primary Ioops at the scene.
Two and door AND1 and AND2 is also comprised in processor 21, and two or OR1 and OR2.The output of other threshold triggers unit XU1 and the output of incision/excision unit 41 is divided into two inputs of door AND1.The output of threshold triggers unit XU2 and the output of incision/excision unit 41 is respectively with two inputs of door AND2.Or two of door OR1 inputs are respectively the output with the output of door AND1 and threshold triggers unit XU5.Or two of door OR2 inputs are respectively the output with the output of door AND2 and threshold triggers unit XU3.DCS system also comprises 3 digital signal output interface DO1 ~ DO3.The output signal of processor 21 is sent to topworks 3 respectively by these three digital signal output interfaces.
In this application, cut/excision unit 41 is for incision or excise pressure gauge T1.Certainly, according to actual needs incision/excision unit 41 can also be connected to other places, to realize cutting/excise operation to other pressure gauges.
The principle of work of the Logical Configuration in processor 21 is as follows:
If object reference pressure (setting on PG1) is less than or equal to the force value in primary Ioops, the force value namely on T3 is more than or equal to 0bar.g, and so threshold triggers unit XU3 is triggered, and sound and light alarm equipment 32 alarm operating personnel pay close attention to;
If primary Ioops force value is greater than first threshold Y1, the force value namely on T1 is greater than Y1, and so XU2 is triggered, and sound and light alarm equipment 32 alarm operating personnel pay close attention to;
If primary Ioops force value is Second Threshold Y2 higher than the value of object reference pressure, the force value namely on T3 is more than or equal to Y2, and so threshold triggers unit XU4 is triggered, and hydraulic testpump 33 is stopped transport;
If the pressure of primary Ioops is greater than the 3rd threshold value Y3, the force value namely on T1 is greater than Y3, and so threshold triggers module XU1 is triggered, and blowdown valve 31 is unlocked;
If primary Ioops pressure is greater than the 4th threshold value Y4, the force value namely on T2 is greater than Y4, and so threshold triggers module XU5 is triggered, and blowdown valve 31 is unlocked.
As shown in Figure 3, because KIC system is the upper system based on processor 21, so KIC system 4 directly can obtain all detection signal S-T1, S-T2, S-T3 and S-T4 that pressure unit 1 is sent to processor 21.
DCS system shown in Fig. 3 also comprises two 5 analog signal output interface AO1 ~ AO5.Wherein analog signal output interface AO1 and AO2 is respectively used to the detection signal S-T1 of pressure gauge T1 and the detection signal S-T3 of pressure gauge T3 to be sent to KCP system.Analog signal output interface AO3 ~ AO5 is respectively used to that pressure gauge T4, T2 and T3 detection signal S-T4, S-T2 and S-T3 are separately sent to registering instrument 6 and shows.Registering instrument 6 is positioned at Safety Injection pump house, for showing hydraulic pressure detected value.
Preferably, as shown in Figure 3, topworks 3 comprise be arranged in primary Ioops blowdown valve 31, be positioned at the sound and light alarm equipment 32 of master-control room and be positioned at the hydraulic testpump 33 of safety injection system pump house.Correspondingly, or the output of door OR1 is connected to blowdown valve 31 by digital signal output interface DO1, or the output of door OR2 by digital signal output interface DO2 be connected to sound and light alarm at one's side 32, threshold triggers unit XU4 output be sent to hydraulic testpump 33 by digital signal output interface DO3.
Should be understood that 4 analog input interfaces specifically provided in Fig. 3,4 pressure gauges, 5 threshold triggers modules, 2 with door, 2 or, 3 digital signal output interfaces and 5 analog signal output interfaces are just in order to realize a certain predetermined overpressure protection function.If overpressure protection function there occurs change, those skilled in the art are according to instruction of the present invention, and can adjust quantity and their annexation of above-mentioned all parts easily, this does not need to pay creative work.
In existing nuclear power station, DCS system comprises a lot of control stations, and each control station is an independently DCS subsystem.In the present invention, a control station in DCS system is preferably used to form overpressure protection system with pressure unit 1 and topworks 3.Realized counting less of monitoring function by the control station selected and affect little on the process system of cold conditions function test.
By implementing the overpressure protection system of the present embodiment, the KIC system by DCS system provides real-time overpressure protection picture to reflect the state of field apparatus, can also provide exercisable KIC monitoring image.Only need within a processor to carry out very simple Logical Configuration, all functions of overpressure protection can be completed.
As shown in Figures 4 and 5, they to be respectively in KIC system 4 overpressure protection of display can operation monitoring picture 80 and primary Ioops pressure display frame 90.As shown in Figure 4, this picture very intuitively and each equipment, module and the annexation between them that show all sidedly in overpressure protection system.The real-time pressure value that can visually see in Fig. 4 on pressure gauge T1 ~ T4, can also pass through above force value, display box shows the rank residing for current force value, pressure rank H3 as shown in Figure 4.Whether force value 12.34 top-right display box F is normal work for indicating pressure gauge, such as, can represent that this pressure gauge cannot normally work by the warning of highlighted redness.Whether cut into overpressure protection system, then represent excised as represented by dashed linely cut solid line if can also show pressure gauge RCP015MP in operation monitoring picture 80.Fig. 5 then shows to simple, intuitive the concrete force value of the primary Ioops test test of concrete certain number machine, and wherein force value is presented in the square frame before MPa.
Should understand, picture in Fig. 4 and Fig. 5 is a schematic picture, those skilled in the art can adjust the picture shown by KIC system according to actual needs, and specifically to show which content for programming personnel be very simple and existing technology, do not need to pay creative work, therefore the present invention does not specifically set forth the display how realizing these pictures.
Due to the intrinsic equipment that DCS system is nuclear power plant; therefore when adopting DCS system to build overpressure protection system; DCS system and the line of other equipment rooms in overpressure protection system adopt hard wired mode to be connected; and hardwire is based on the signal cable adopting the formal cable of nuclear power plant core for subsequent use and stop using during using cold conditions function test, is auxiliary with temporary cable.
As described in Figure 3, in the present invention, the hardwire between DCS system and other equipment comprises:
Wiring 1, i.e. wiring between pressure unit 1 and 4 analog input interface AI1 ~ AI4;
Wiring 2, i.e. 5 analog signal output interface AO1 ~ AO5 and the wiring between field recorder and KCP system; And
Wiring 3, the wiring namely between 3 digital signal output interface DO1 ~ DO3 and topworks 3.
In nuclear power station, DCS system, pressure unit 1, topworks 3 and KCP system are distributed in different positions respectively, more or less there is a part of line between them.Due to the relation in geographic position, each wiring of wiring 1,2 and 3 is coupled together by very multi-cable, the signal cable that therefore can make full use of the existing formal cable of nuclear power plant core for subsequent use when realizing wiring 1,2 and 3 or stop using during using cold conditions function test.When really having no idea, just temporary cable can be connect.And specifically which place is with formal cable core for subsequent use, which place signal cable of stopping using during using cold conditions function test and which place is with temporary cable, this is all that those skilled in the art can designed, designed according to actual conditions.
The present invention builds overpressure protection system by adopting DCS system, can make full use of formal cable, greatly reduce temporary cable quantity, decrease wiring and clearing time.
Fig. 6 is the overpressure protection method of the nuclear power plant cold-state function test that the embodiment of the present invention provides.As shown in Figure 6, this overpressure protection method comprises the following steps:
S1, DCS system receive the detection signal from pressure unit, and described detection signal reacts the force value of the primary Ioops detected by described pressure unit;
S2, DCS system produce output signal according to described detection signal;
Described output signal is sent to topworks to perform overpressure protection action by S3, DCS system, thus according to the current residing pressure platform of cold conditions function test, reduces primary Ioops force value and/or send warning.
Wherein, pressure unit refers to export the pressure transducer into standard signal, is a kind ofly to accept the instrument that pressure variations is converted to standard output signals in proportion.The fluid pressure parameter that load cell can be experienced by it is transformed into the electric signal (as 4 ~ 20mADC etc.) of standard, processes to supply DCS system.The overpressure protection system of the application by adopting the intrinsic DCS system of nuclear power plant to build nuclear power plant cold-state function test; avoiding the emulator in order to carry out cold conditions function test and special acquisition price costliness, effectively reducing cost and having saved engineering gadget resource.Due to the formal equipment that DCS system is nuclear power plant; therefore without the need to removing overpressure protection system after cold conditions function test completes; and then rebuild overpressure protection system when avoiding next cold conditions function test, save a large amount of human and material resources, effectively shorten the cold conditions function test cycle.Finally, due in nuclear power station, DCS system is powered by the formal electricity consumption of nuclear power plant, and therefore the overpressure protection system of the application is without the need to adopting temporary source, avoids the safety problem bringing system instability because temporary source is unstable.
Particularly, in step s 2, DCS system also performs following steps:
S21, produce corresponding control signal according to described detection signal and predetermined overpressure protection flow process;
S22, field apparatus is provided in real time can operation monitoring picture;
S23, display primary Ioops pressure.
Wherein, step S22 also comprises: the input receiving user, described input comprises the input/excision of parameter adjustment and pressure unit.
Shown in composition graphs 2, DCS system 2 comprises superpressure processing module 21, supervisory work module 22 and display module 23.Above-mentioned steps S21 ~ S23 performs respectively in these three modules of DCS system 2.Superpressure processing module 21 for receiving the detection signal of described pressure unit, and produces corresponding control signal according to predetermined overpressure protection flow process and is sent to topworks.Supervisory work module 22 in real time can operation monitoring picture for what provide field apparatus.Display module 23 is for providing the display frame of primary Ioops pressure.According to the requirement of nuclear power plant's cold conditions functional realiey, the predetermined overpressure protection flow process in superpressure processing module 21 must realize following overpressure protection function:
The first, before leaving 27bar platform, residual heat removal system (RRA) is in the state of putting into operation, and now the pressure protect of primary Ioops is realized by the blowdown valve of RRA system;
The second, when primary Ioops pressure is between 27bar.g-154bar.g, overpressure protection is by opening safety injection system blowdown valve, and pressure release to middle pressure Safety Injection case pipeline realizes;
3rd, when primary Ioops pressure is between 154bar.g-228bar.g, overpressure protection is realized by stoppage in transit Primary hydraulic test pump;
4th, when primary Ioops pressure is more than 158bar.g, when primary Ioops pressure and overpressure protection loop pressure reduction are more than 0bar, master-control room produces sound and light alarm;
5th, when primary Ioops pressure is greater than 232bar.g, safety injection system blowdown valve is opened rapidly, realizes overpressure protection.
By implementing the present embodiment, providing overpressure protection picture to reflect the situation of field apparatus, exercisable monitoring image can also be provided, and then substantially increase the intellectuality of overpressure protection system and the reliability of overpressure protection, obtain better Consumer's Experience.
Due to the intrinsic equipment that DCS system is nuclear power plant; therefore when adopting DCS system to build overpressure protection system; DCS system and the line of other equipment rooms in overpressure protection system adopt hard wired mode to be connected; and hardwire is based on the signal cable adopting the formal cable of nuclear power plant core for subsequent use and stop using during using cold conditions function test, is auxiliary with temporary cable.For the hardwire mode that this is concrete, elaborate in the above embodiments, be not repeated at this.
Foregoing description relates to various module.These modules generally include the combination (such as solidification software) of hardware and/or hardware and software.These modules can also comprise the computer-readable medium (such as, non-volatile media) comprising instruction (such as, software instruction), when processor performs these instructions, just can perform various functional characteristics of the present invention.Correspondingly, unless explicitly requested, scope of the present invention is by the restriction of the specific hardware in the module clearly mentioned in embodiment and/or software feature.As non-limitative example, the present invention in an embodiment can by one or more processors (such as microprocessor, digital signal processor, baseband processor, microcontroller) executive software instruction (being such as stored in volatile memory and/or permanent memory).In addition, the present invention can also use special IC (ASIC) and/or other hardware elements to perform.It is pointed out that in the description above to various module, be divided into these modules, is for clarity.But in reality is implemented, the boundary of various module can be fuzzy.Such as, herein arbitrarily or all functions module can share various hardware and/or software element.Again such as, any and/or all functions module herein can carry out all or part of enforcement by the processor executive software instruction had.In addition, the various software submodules performed by one or more processor can be shared between various software module.Correspondingly, unless explicitly requested, scope of the present invention is not by the restriction of mandatory boundary between various hardware and/or software element.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (15)
1. an overpressure protection system for nuclear power plant cold-state function test, comprises pressure unit and topworks, it is characterized in that, also comprise DCS system;
Detection signal for detecting the force value of primary Ioops, and is sent to DCS system by described pressure unit;
Described DCS system is used for producing according to described detection signal outputing signal and being sent to topworks;
Described topworks is used for performing overpressure protection action according to described output signal, thus according to the current residing pressure platform of cold conditions function test, reduces primary Ioops force value and/or send warning.
2. the overpressure protection system of nuclear power plant cold-state function test according to claim 1, it is characterized in that, described DCS system comprises superpressure processing module, supervisory work module and display module;
Described superpressure processing module for receiving the detection signal of described pressure unit, and produces corresponding control signal according to predetermined overpressure protection flow process and is sent to topworks;
Described supervisory work module in real time can operation monitoring picture for what provide field apparatus;
Described display module is used for providing the display frame of primary Ioops pressure.
3. the overpressure protection system of nuclear power plant cold-state function test according to claim 2, it is characterized in that, described supervisory work module and display module are integrated in power station computerized information and control system; Can operation monitoring picture and the display frame of described primary Ioops pressure described in changeable display in described computerized information and control system.
4. the overpressure protection system of nuclear power plant cold-state function test according to claim 3, is characterized in that, described superpressure processing module is the processor of DCS system; Described power station computerized information and control system are the upper systems based on processor.
5. the overpressure protection system of nuclear power plant cold-state function test according to claim 3, is characterized in that, describedly operation on operation monitoring picture can comprise the input/excision of parameter adjustment and pressure unit.
6. the overpressure protection system of nuclear power plant cold-state function test according to claim 1, is characterized in that, particularly, selects a control station in DCS system and described pressure unit and topworks to form described overpressure protection system; Realized counting less of monitoring function by the control station selected and affect little on the process system of cold conditions function test.
7. the overpressure protection system of nuclear power plant cold-state function test according to claim 1; it is characterized in that; described DCS system is with hard wired mode and equipment connection; described hardwire, based on the signal cable adopting the formal cable of nuclear power plant core for subsequent use and stop using during using cold conditions function test, is auxiliary with temporary cable.
8. the overpressure protection system of nuclear power plant cold-state function test according to claim 1; it is characterized in that, the hydraulic testpump that described topworks comprises the blowdown valve being arranged in primary Ioops, the sound and light alarm equipment being positioned at master-control room and is positioned at safety injection system pump house.
9. the overpressure protection system of nuclear power plant cold-state function test according to claim 1, is characterized in that, described overpressure protection system also comprise be positioned at safety injection system pump house, for showing the registering instrument of hydraulic pressure detected value;
Described output signal comprises the digital signal being sent to described topworks and the simulating signal being sent to described registering instrument and non-security level cabinet system.
10. the overpressure protection system of nuclear power plant cold-state function test according to claim 1; it is characterized in that; the quantity of described pressure unit is multiple, at different pressure ranges for described DCS system provides described detection signal, and then trigger different described topworks actions.
The overpressure protection method of 11. 1 kinds of nuclear power plant cold-state function tests, is characterized in that, comprise the following steps:
S1, DCS system receive the detection signal from pressure unit, and described detection signal reacts the force value of the primary Ioops detected by described pressure unit;
S2, DCS system produce output signal according to described detection signal;
Described output signal is sent to topworks to perform overpressure protection action by S3, DCS system, thus according to the current residing pressure platform of cold conditions function test, reduces primary Ioops force value and/or send warning.
The overpressure protection method of 12. nuclear power plant cold-state function tests according to claim 11, is characterized in that, described step S2 comprises the following steps:
S21, produce corresponding control signal according to described detection signal and predetermined overpressure protection flow process;
S22, field apparatus is provided in real time can operation monitoring picture;
S23, display primary Ioops pressure.
The overpressure protection method of 13. nuclear power plant cold-state function tests according to claim 12, is characterized in that, described step S22 also comprises: the input receiving user, described input comprises the input/excision of parameter adjustment and pressure unit.
The overpressure protection method of 14. nuclear power plant cold-state function tests according to claim 11, is characterized in that, also comprises before described step S1:
S0, described DCS system is connected to equipment in hard wired mode, described hardwire, based on the signal cable of stopping using during adopting the formal cable of nuclear power plant core for subsequent use and using cold conditions function test, is auxiliary with temporary cable.
The overpressure protection method of 15. nuclear power plant cold-state function tests according to claim 11, is characterized in that, the overpressure protection action performed in described step S3 comprises:
S31, when the first pressure platform, open residual heat removal system blowdown valve to reduce primary Ioops force value;
S32, when the second pressure platform, open safety injection system blowdown valve to reduce primary Ioops force value;
S33, when the 3rd pressure platform, stoppage in transit primary Ioops hydraulic pressure test pump is to reduce primary Ioops force value;
S34, when the 4th pressure platform, master-control room produce sound and light alarm; And
S35, when the 5th pressure platform, open safety injection system blowdown valve to reduce primary Ioops pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690719.7A CN105355241A (en) | 2015-10-22 | 2015-10-22 | Overpressure protection system and method of cold functional test in nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690719.7A CN105355241A (en) | 2015-10-22 | 2015-10-22 | Overpressure protection system and method of cold functional test in nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105355241A true CN105355241A (en) | 2016-02-24 |
Family
ID=55331198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510690719.7A Pending CN105355241A (en) | 2015-10-22 | 2015-10-22 | Overpressure protection system and method of cold functional test in nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105355241A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927529A (en) * | 2016-06-14 | 2016-09-07 | 中广核工程有限公司 | Nuclear grade pump inlet filter screen monitoring device |
| CN106409360A (en) * | 2016-09-27 | 2017-02-15 | 中广核研究院有限公司 | Method used for achieving nuclear power plant overpressure protection functions |
| CN107887038A (en) * | 2017-11-15 | 2018-04-06 | 中广核工程有限公司 | The cold protection against overpressure method and device of nuclear power station |
| CN108461164A (en) * | 2018-01-04 | 2018-08-28 | 中广核研究院有限公司 | A kind of off-line type nuclear power plant water test unit and method |
| CN115407724A (en) * | 2021-05-28 | 2022-11-29 | 福建福清核电有限公司 | Overpressure protection method for primary loop hydrostatic test of nuclear power station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110061861A1 (en) * | 2007-10-23 | 2011-03-17 | Flanders Patrick S | Clustered wellhead trunkline protection and testing system with esp speed controller and emergency isolation valve |
| CN102568629A (en) * | 2012-02-02 | 2012-07-11 | 中广核工程有限公司 | Power supply method for nuclear power plant cold-state function test |
| CN102638095A (en) * | 2012-04-24 | 2012-08-15 | 中广核工程有限公司 | Power supply method of cold-state function test in nuclear power plant |
| CN203480850U (en) * | 2013-10-18 | 2014-03-12 | 中广核核电运营有限公司 | Device for detecting overpressure of circuit hydrostatic test of pressurized water reactor nuclear power plant |
-
2015
- 2015-10-22 CN CN201510690719.7A patent/CN105355241A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110061861A1 (en) * | 2007-10-23 | 2011-03-17 | Flanders Patrick S | Clustered wellhead trunkline protection and testing system with esp speed controller and emergency isolation valve |
| CN102568629A (en) * | 2012-02-02 | 2012-07-11 | 中广核工程有限公司 | Power supply method for nuclear power plant cold-state function test |
| CN102638095A (en) * | 2012-04-24 | 2012-08-15 | 中广核工程有限公司 | Power supply method of cold-state function test in nuclear power plant |
| CN203480850U (en) * | 2013-10-18 | 2014-03-12 | 中广核核电运营有限公司 | Device for detecting overpressure of circuit hydrostatic test of pressurized water reactor nuclear power plant |
Non-Patent Citations (2)
| Title |
|---|
| 熊武 等: "冷试超压保护系统在DCS平台的嵌套与应用", 《仪器仪表用户》 * |
| 邹彪: "CPR1000核电站冷试超压保护通过DCS实现的可行性分析", 《电子技术与软件工程》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927529A (en) * | 2016-06-14 | 2016-09-07 | 中广核工程有限公司 | Nuclear grade pump inlet filter screen monitoring device |
| CN106409360A (en) * | 2016-09-27 | 2017-02-15 | 中广核研究院有限公司 | Method used for achieving nuclear power plant overpressure protection functions |
| CN107887038A (en) * | 2017-11-15 | 2018-04-06 | 中广核工程有限公司 | The cold protection against overpressure method and device of nuclear power station |
| CN107887038B (en) * | 2017-11-15 | 2020-02-14 | 中广核工程有限公司 | Cold overpressure protection method and device for nuclear power station |
| CN108461164A (en) * | 2018-01-04 | 2018-08-28 | 中广核研究院有限公司 | A kind of off-line type nuclear power plant water test unit and method |
| CN115407724A (en) * | 2021-05-28 | 2022-11-29 | 福建福清核电有限公司 | Overpressure protection method for primary loop hydrostatic test of nuclear power station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105355241A (en) | Overpressure protection system and method of cold functional test in nuclear power plant | |
| CN107884711A (en) | Breaker method of testing and terminal | |
| KR101475632B1 (en) | Method for playing operating record data of ems | |
| KR20140073043A (en) | Application service system of smart terminal for watching power equipment | |
| KR101040406B1 (en) | Remote switchboard management system | |
| KR101919042B1 (en) | Simulator for protective relay education | |
| CN110136852B (en) | Nuclear power station primary loop hydrostatic test overpressure protection system | |
| CN102156795B (en) | Simulation information system of digital transformer station based on transformer station configuration description file | |
| CN102903291B (en) | Simulation platform of cooling system of high-voltage direct-current transmission converter valve | |
| CN201568049U (en) | Automatic pressure test device of oil-production wellhead equipment | |
| CN201392993Y (en) | DCS control module for nuclear power engineering transformer | |
| CN107437345A (en) | A kind of nuclear plant digital safety devices drive system training test platform | |
| CN112632779A (en) | Panoramic display method for running state of total station protection equipment based on primary equipment wiring diagram | |
| KR20090096101A (en) | System and method for preventing circuit breaker's wrong control using set theory | |
| CN107562011A (en) | A kind of cast tube production line security protection control system and its control method | |
| CN201365140Y (en) | Feeder line switch control module for nuclear power station electric power plant | |
| CN104820152B (en) | Portable DC switchs differential emulation test system and its implementation | |
| KR101861576B1 (en) | Field information processing panel based on IEC61850 | |
| CN203480850U (en) | Device for detecting overpressure of circuit hydrostatic test of pressurized water reactor nuclear power plant | |
| CN105447769A (en) | Power grid regulation and control integration monitoring information intelligent processing system | |
| CN104242460A (en) | System and method for analog display of internal logic contacts of protection device of intelligent substation | |
| CN207380529U (en) | A kind of cast tube production line security protection control system | |
| CN105022287A (en) | Modeling method of full-digital in-place control panel cabinet | |
| CN203826927U (en) | General type intelligent power protection controller | |
| KR102694480B1 (en) | Nuclear power plants operation assistance system and operation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |
|
| RJ01 | Rejection of invention patent application after publication |