CN105788687A - Reactor protection system two-out-of-three conforming maintenance bypass system - Google Patents
Reactor protection system two-out-of-three conforming maintenance bypass system Download PDFInfo
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- CN105788687A CN105788687A CN201610328638.7A CN201610328638A CN105788687A CN 105788687 A CN105788687 A CN 105788687A CN 201610328638 A CN201610328638 A CN 201610328638A CN 105788687 A CN105788687 A CN 105788687A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The invention discloses a reactor protection system two-out-of-three conforming maintenance bypass system, comprising a reactor protection system and a 2/3 conforming logic bypass unit, wherein the 2/3 conforming logic bypass unit comprises a rotary switch S which is provided with four gear contactors and also comprises twelve relays which are all normally open relays. Every four relays of the twelve relays are seen as one group; input ends of input circuits of the four relays of the first group are all connected to first gear contactors, input ends of input circuits of the four relays of the second group are all connected to second gear contactors, and input ends of input circuits of the four relays of the third group are all connected to third gear contactors. According to the system, a bypass device is arranged between a safety monitoring device and a safety logic device so that the protection system maintenance bypass function is added. Device on-line maintenance and test can be achieved; non-planned reactor shutdown probability due to device fault is reduced; the performability of reactors is increased; and production efficiency is guaranteed.
Description
Technical field
The present invention relates to reactor protection system safety control technology, particularly relate to reactor protection system two from three and meet maintenance bypass system.
Background technology
The overall upper 2/3(two from three of reactor protection system emergency shut-down unit) combination of channels; each security logic combination of channels adopts the structure that the version that local 2/3 meets, three-channel safe logic assembly and scram breaker composition multichannel overall 2/3 meet.
The signal of safety monitoring assembly monitoring is measured parameter, process measurement parameter, protection system equipment status and four kinds of signal types of system power supply state 24 kinds protection input signal by core and is formed.24 kinds of protection signals of feeding safe logic assembly are met mode by " 2/3 logic meets " and " 1/2 logic meets " two kinds of local and form.
Safe logic assembly accepts the contact signal of safety monitoring assembly output, and under reactor normal power runs, contact is completely in Guan Bi conducting state, and the signal of transmission is logical one signal.
nullAs shown in Figure 1，The structure of reactor protection system includes the safety monitoring assembly A being positioned at A channel、It is positioned at the safety monitoring assembly B of channel B、It is positioned at the safety monitoring assembly C of C-channel，Also include the safe logic assembly A being positioned at A channel、It is positioned at the safe logic assembly B of channel B、It is positioned at the safe logic assembly C of C-channel，Safety monitoring assembly A output has protection signal A1、Protection signal A2、Protection signal A3，Safety monitoring assembly B output has protection signal B1、Protection signal B2、Protection signal B3，Safety monitoring assembly C output has protection signal C1、Protection signal C2、Protection signal C3，Safe logic assembly A receives protection signal A1、Protection signal B1、Protection signal C1，Safe logic assembly B receives protection signal A2、Protection signal B2、Protection signal C2，Safe logic assembly C receives protection signal A3、Protection signal B3、Protection signal C3.
In reactor operation process; the unplanned shutdown caused due to safety monitoring assembly equipment fault reduces the performability of reactor; in order to realize under Power operation operating mode the replacing of safety monitoring assembly faulty equipment, maintenance, verification or calibration; need to cancel artificially behavior and the measure of one or more functions of the equipments in protection system; i.e. maintenance bypass; in the prior art, related data is not found.
Summary of the invention
It is an object of the invention to provide a kind of reactor protection system two from three to reactor protection system offer by-pass collar and meet maintenance bypass system, this system meets mode for the two from three of protection input signal, devise bypass mode, by this by-pass collar is arranged between safety monitoring assembly and safe logic assembly, add the function of protection system maintenance bypass, realize on-line maintenance and the test of equipment, reduce the unplanned shutdown probability because equipment fault causes, both the operation safety of reactor had been ensured, ensure again the seriality of operation test, improve the performability of reactor.
For solving disadvantages mentioned above, technical scheme is as follows:
Reactor protection system two from three meets maintenance bypass system,
nullIncluding reactor protection system，Reactor protection system includes the safety monitoring assembly A being positioned at A channel、It is positioned at the safety monitoring assembly B of channel B、It is positioned at the safety monitoring assembly C of C-channel，Also include the safe logic assembly A being positioned at A channel、It is positioned at the safe logic assembly B of channel B、It is positioned at the safe logic assembly C of C-channel，Safety monitoring assembly A output has protection signal A1、Protection signal A2、Protection signal A3，Safety monitoring assembly B output has protection signal B1、Protection signal B2、Protection signal B3，Safety monitoring assembly C output has protection signal C1、Protection signal C2、Protection signal C3，Safe logic assembly A receives protection signal A1、Protection signal B1、Protection signal C1，Safe logic assembly B receives protection signal A2、Protection signal B2、Protection signal C2，Safe logic assembly C receives protection signal A3、Protection signal B3、Protection signal C3；
Logic bypass block is met including 2/3,2/3 meets the rotary switch S that logic bypass block includes having four gear contacts, rotary switch S has 0 gear contact, 1 gear contact, 2 gear contacts, 3 gear contacts, the action cutter-contact point series connection of rotary switch S puts into button SP and is connected to power supply, and the 0 gear contact of rotary switch S is unsettled；
2/3 meets logic bypass block also includes 12 relays, 12 relays are normally opened relay, in 12 relays, every 4 is one group, the input of the input circuit of 4 relays of first group is all connected to 1 gear contact, outfan all ground connection of the input circuit of 4 relays of first group, the input of the input circuit of 4 relays of second group is all connected to 2 gear contacts, outfan all ground connection of the input circuit of 4 relays of second group, the input of the input circuit of 4 relays of the 3rd group is all connected to 3 gear contacts, outfan all ground connection of the input circuit of 4 relays of the 3rd group；
4 relays of first group are A channel relay group, and 4 relays of second group are channel B relay group, and 4 relays of the 3rd group are C-channel relay group；
The outfan of the output loop of each relay in A channel relay group all possesses 2 signalling contacts, the input end grounding of its output loop, A channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of A channel relay group, 2 signalling contacts are had to collect composition bypass signal contact A passage BP1, 2 signalling contacts are separately had to collect composition bypass signal contact A passage BP2, 2 signalling contacts are separately had to collect composition bypass signal contact A passage BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact A passage BP1 connects with protection signal A1, bypass signal contact A passage BP2 connects with protection signal A2, bypass signal contact A passage BP3 connects with protection signal A3；
The outfan of the output loop of each relay in channel B relay group all possesses 2 signalling contacts, the input end grounding of its output loop, channel B relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of channel B relay group, 2 signalling contacts are had to collect composition bypass signal contact channel B BP1, 2 signalling contacts are separately had to collect composition bypass signal contact channel B BP2, 2 signalling contacts are separately had to collect composition bypass signal contact channel B BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact channel B BP1 connects with protection signal B1, bypass signal contact channel B BP2 connects with protection signal B2, bypass signal contact channel B BP3 connects with protection signal B3；
The outfan of the output loop of each relay in C-channel relay group all possesses 2 signalling contacts, the input end grounding of its output loop, C-channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of C-channel relay group, 2 signalling contacts are had to collect composition bypass signal contact C-channel BP1, 2 signalling contacts are separately had to collect composition bypass signal contact C-channel BP2, 2 signalling contacts are separately had to collect composition bypass signal contact C-channel BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact C-channel BP1 connects with protection signal C1, bypass signal contact C-channel BP2 connects with protection signal C2, bypass signal contact C-channel BP3 connects with protection signal C3.
The design principle of said system is: when the action cutter-contact point of rotary switch S is placed in 0 gear contact, represent and do not put into by-pass collar, when the action cutter-contact point of rotary switch S is placed in 1 gear contact, represent that this bypass signal enters A logical channel and puts into bypass, when the action cutter-contact point of rotary switch S is placed in 2 gear contact, represent that this bypass signal enters B logic passage and puts into bypass, when the action cutter-contact point of rotary switch S is placed in 3 gear contacts, represent that this bypass signal enters B logic passage and puts into bypass；Putting into button SP to be pressed, when bypassing if desired for a certain signalling channel 2/3 logic met, rotated to the gear contact of respective channel by corresponding rotary switch S, and press input button SP, now this road signal is bypassed.nullSuch as，When the safety monitoring assembly A in A channel breaks down or other situations，Need safety monitoring assembly A is carried out bypass process，Then now，The action cutter-contact point of rotary switch S is placed in 1 gear contact by us，And press input button SP，Now safety monitoring assembly A is bypassed，Simultaneously，The input circuit of all relays in A channel relay group is switched on，Relay in A channel relay group is started working，The output loop of all relays in A channel relay group is connected，Namely 8 signalling contacts in A channel relay group are all grounded，Therefore，Bypass signal contact A passage BP1、Bypass signal contact A passage BP2、The bypass signal contact A equal ground connection of passage BP3，Due to bypass signal contact A passage BP1、Bypass signal contact A passage BP2、Bypass signal contact A passage BP3 and the protection signal A1 from safety monitoring assembly A、Protection signal A2、Protection signal A3 one_to_one corresponding series connection，Form "AND" logical relation，Therefore，Protection signal A1、Protection signal A2、Protection signal A3 is all pulled low，Safety monitoring assembly A now is considered as output low level，Reach the purpose that safety monitoring assembly A is carried out to be bypassed，Now this Protection parameters is met relation from 2/3 and becomes 1/2 and meet relation，Whether reactor protection system makes the factor protection signal deciding by safety monitoring assembly B and safety monitoring assembly C of protection act.
nullSame，When the safety monitoring assembly B in channel B breaks down or other situations，Need safety monitoring assembly B is carried out bypass process，Then now，The action cutter-contact point of rotary switch S is placed in 2 gear contacts by us，And press input button SP，Now safety monitoring assembly B is bypassed，Simultaneously，The input circuit of all relays in channel B relay group is switched on，Relay in channel B relay group is started working，The output loop of all relays in channel B relay group is connected，Namely 8 signalling contacts in channel B relay group are all grounded，Therefore，Bypass signal contact channel B BP1、Bypass signal contact channel B BP2、The bypass signal contact equal ground connection of channel B BP3，Due to bypass signal contact channel B BP1、Bypass signal contact channel B BP2、Bypass signal contact channel B BP3 and the protection signal B1 from safety monitoring assembly B、Protection signal B2、Protection signal B3 one_to_one corresponding series connection，Form "AND" logical relation，Therefore，Protection signal B1、Protection signal B2、Protection signal B3 is all pulled low，Safety monitoring assembly B now is considered as output low level，Reach the purpose that safety monitoring assembly B is carried out to be bypassed，Now this Protection parameters is met relation from 2/3 and becomes 1/2 and meet relation，Whether reactor protection system makes the factor protection signal deciding by safety monitoring assembly A and safety monitoring assembly C of protection act.
nullSame，When the safety monitoring assembly C in C-channel breaks down or other situations，Need safety monitoring assembly B is carried out bypass process，Then now，The action cutter-contact point of rotary switch S is placed in 3 gear contacts by us，And press input button SP，Now safety monitoring assembly C is bypassed，Simultaneously，The input circuit of all relays in C-channel relay group is switched on，Relay in C-channel relay group is started working，The output loop of all relays in C-channel relay group is connected，Namely 8 signalling contacts in C-channel relay group are all grounded，Therefore，Bypass signal contact C-channel BP1、Bypass signal contact C-channel BP2、The bypass signal contact equal ground connection of C-channel BP3，Due to bypass signal contact C-channel BP1、Bypass signal contact C-channel BP2、Bypass signal contact C-channel BP3 and the protection signal C1 from safety monitoring assembly C、Protection signal C2、Protection signal C3 one_to_one corresponding series connection，Form "AND" logical relation，Therefore，Protection signal C1、Protection signal C2、Protection signal C3 is all pulled low，Safety monitoring assembly C now is considered as output low level，Reach the purpose that safety monitoring assembly C is carried out to be bypassed，Now this Protection parameters is met relation from 2/3 and becomes 1/2 and meet relation，Whether reactor protection system makes the factor protection signal deciding by safety monitoring assembly A and safety monitoring assembly B of protection act.
Preferably, due in said system, the choosing of bypass signal contact adopts random chooses mode, therefore, its embodiment exists after 2 signalling contacts chosen on the output loop of same relay collect and form bypass signal contact, it is therefore assumed that this relay breaks down, then can not close the output loop changing relay, therefore above-mentioned 2 signalling contacts will not ground connection, therefore cannot be carried out bypass process, bypass system at this moment is insecure.Therefore, the present invention is in order to avoid the appearance of above-mentioned situation, adopt the following line plan of establishment, namely the output loop adopting any one relay chooses a signalling contact, a contact is chosen again on the output loop of another one relay, these 2 signalling contacts are collected formation bypass signal contact, after so arranging, can reach to increase the purpose of bypass signal stability, even if a relay fault, but the bypass signal contact that the signalling contact owing to there are 2 different relays is constituted, its bypass signal contact is still in the state being pulled down, its level is the state of zero.
Based on above-mentioned preferred design principle, preferably, 4 relays of A channel relay group are respectively as follows: relay K 1, relay K 2, relay K 3, relay K 4, the outfan of the output loop of relay K 1 possesses signalling contact K1-1 and signalling contact K1-2, the outfan of the output loop of relay K 2 possesses signalling contact K2-1 and signalling contact K2-2, the outfan of the output loop of relay K 3 possesses signalling contact K3-1 and signalling contact K3-2, the outfan of the output loop of relay K 4 possesses signalling contact K4-1 and signalling contact K4-2, the output loop of relay K 4 is connected on light warning signaling system；Signalling contact K1-1 and signalling contact K2-1 collects composition bypass signal contact A passage BP1, signalling contact K3-1 and signalling contact K2-2 collects composition bypass signal contact A passage BP2, signalling contact K3-2 and signalling contact K1-2 and collects composition bypass signal contact A passage BP3.
Based on above-mentioned preferred design principle, preferably, 4 relays of channel B relay group are respectively as follows: relay K 5, relay K 6, relay K 7, relay K 8, the outfan of the output loop of relay K 5 possesses signalling contact K5-1 and signalling contact K5-2, the outfan of the output loop of relay K 6 possesses signalling contact K6-1 and signalling contact K6-2, the outfan of the output loop of relay K 7 possesses signalling contact K7-1 and signalling contact K7-2, the outfan of the output loop of relay K 8 possesses signalling contact K8-1 and signalling contact K8-2, the output loop of relay K 8 is connected on light warning signaling system；Signalling contact K5-1 and signalling contact K6-1 collects composition bypass signal contact channel B BP1, signalling contact K7-1 and signalling contact K6-2 collects composition bypass signal contact channel B BP2, signalling contact K7-2 and signalling contact K5-2 and collects composition bypass signal contact channel B BP3.
Based on above-mentioned preferred design principle, preferably, 4 relays of C-channel relay group are respectively as follows: relay K 9, relay K 10, relay K 11, relay K 12, the outfan of the output loop of relay K 9 possesses signalling contact K9-1 and signalling contact K9-2, the outfan of the output loop of relay K 10 possesses signalling contact K10-1 and signalling contact K10-2, the outfan of the output loop of relay K 11 possesses signalling contact K11-1 and signalling contact K11-2, the outfan of the output loop of relay K 12 possesses signalling contact K12-1 and signalling contact K12-2, the output loop of relay K 12 is connected on light warning signaling system；Signalling contact K9-1 and signalling contact K10-1 collects composition bypass signal contact C-channel BP1, signalling contact K11-1 and signalling contact K10-2 collects composition bypass signal contact C-channel BP2, signalling contact K11-2 and signalling contact K9-2 and collects composition bypass signal contact C-channel BP3.
Preferably, described safe logic assembly A, safe logic assembly B, safe logic assembly C include 2/3 and meet logical block.
Preferably, the input circuit of each relay is parallel with diode, forms control module, the input of this control module and the connection of corresponding gear contact, the output head grounding of this control module after the input circuit of relay and diodes in parallel.
Preferably, 1 gear contact is also in series with diode VD13, and 2 gear contacts are also in series with diode VD14, and 3 gear contacts are also in series with ground connection after diode VD15, diode VD13, diode VD14, diode VD15 simultaneously series resistor R, light emitting diode H.
Effect of the invention is that: the present invention, by being arranged between safety monitoring assembly and safe logic assembly by this by-pass collar, adds the function of protection system maintenance bypass.After applying this maintenance bypass device, under ensureing the premise that protection systemic-function normally plays, it is achieved the on-line maintenance of equipment and test, reduce the unplanned shutdown probability because equipment fault causes, improve the performability of reactor, ensured productivity effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of reactor protection system.
Fig. 2 is 2/3 circuit diagram meeting logic bypass block.
Fig. 3 is 2/3 logic connectivity diagram meeting logic bypass block output bypass signal and reactor protection system.
Fig. 4 is that safe logic assembly A accesses bypass signal contact and the logic connectivity diagram of protection signalling contact.
Fig. 5 is the structural representation of the signalling contact composition bypass signal contact of 2/3 output loop meeting logic each relay of bypass block.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
As shown in Figures 1 to 5.
Reactor protection system two from three meets maintenance bypass system,
nullIncluding reactor protection system，Reactor protection system includes the safety monitoring assembly A being positioned at A channel、It is positioned at the safety monitoring assembly B of channel B、It is positioned at the safety monitoring assembly C of C-channel，Also include the safe logic assembly A being positioned at A channel、It is positioned at the safe logic assembly B of channel B、It is positioned at the safe logic assembly C of C-channel，Safety monitoring assembly A output has protection signal A1、Protection signal A2、Protection signal A3，Safety monitoring assembly B output has protection signal B1、Protection signal B2、Protection signal B3，Safety monitoring assembly C output has protection signal C1、Protection signal C2、Protection signal C3，Safe logic assembly A receives protection signal A1、Protection signal B1、Protection signal C1，Safe logic assembly B receives protection signal A2、Protection signal B2、Protection signal C2，Safe logic assembly C receives protection signal A3、Protection signal B3、Protection signal C3；
Logic bypass block is met including 2/3,2/3 meets the rotary switch S that logic bypass block includes having four gear contacts, rotary switch S has 0 gear contact, 1 gear contact, 2 gear contacts, 3 gear contacts, the action cutter-contact point series connection of rotary switch S puts into button SP and is connected to power supply, and the 0 gear contact of rotary switch S is unsettled；
2/3 meets logic bypass block also includes 12 relays, 12 relays are normally opened relay, in 12 relays, every 4 is one group, the input of the input circuit of 4 relays of first group is all connected to 1 gear contact, outfan all ground connection of the input circuit of 4 relays of first group, the input of the input circuit of 4 relays of second group is all connected to 2 gear contacts, outfan all ground connection of the input circuit of 4 relays of second group, the input of the input circuit of 4 relays of the 3rd group is all connected to 3 gear contacts, outfan all ground connection of the input circuit of 4 relays of the 3rd group；
4 relays of first group are A channel relay group, and 4 relays of second group are channel B relay group, and 4 relays of the 3rd group are C-channel relay group；
The outfan of the output loop of each relay in A channel relay group all possesses 2 signalling contacts, the input end grounding of its output loop, A channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of A channel relay group, 2 signalling contacts are had to collect composition bypass signal contact A passage BP1, 2 signalling contacts are separately had to collect composition bypass signal contact A passage BP2, 2 signalling contacts are separately had to collect composition bypass signal contact A passage BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact A passage BP1 connects with protection signal A1, bypass signal contact A passage BP2 connects with protection signal A2, bypass signal contact A passage BP3 connects with protection signal A3；
The outfan of the output loop of each relay in channel B relay group all possesses 2 signalling contacts, the input end grounding of its output loop, channel B relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of channel B relay group, 2 signalling contacts are had to collect composition bypass signal contact channel B BP1, 2 signalling contacts are separately had to collect composition bypass signal contact channel B BP2, 2 signalling contacts are separately had to collect composition bypass signal contact channel B BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact channel B BP1 connects with protection signal B1, bypass signal contact channel B BP2 connects with protection signal B2, bypass signal contact channel B BP3 connects with protection signal B3；
The outfan of the output loop of each relay in C-channel relay group all possesses 2 signalling contacts, the input end grounding of its output loop, C-channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of C-channel relay group, 2 signalling contacts are had to collect composition bypass signal contact C-channel BP1, 2 signalling contacts are separately had to collect composition bypass signal contact C-channel BP2, 2 signalling contacts are separately had to collect composition bypass signal contact C-channel BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact C-channel BP1 connects with protection signal C1, bypass signal contact C-channel BP2 connects with protection signal C2, bypass signal contact C-channel BP3 connects with protection signal C3.
The design principle of said system is: when the action cutter-contact point of rotary switch S is placed in 0 gear contact, represent and do not put into by-pass collar, when the action cutter-contact point of rotary switch S is placed in 1 gear contact, represent that this bypass signal enters A logical channel and puts into bypass, when the action cutter-contact point of rotary switch S is placed in 2 gear contact, represent that this bypass signal enters B logic passage and puts into bypass, when the action cutter-contact point of rotary switch S is placed in 3 gear contacts, represent that this bypass signal enters B logic passage and puts into bypass；Putting into button SP to be pressed, when bypassing if desired for a certain signalling channel 2/3 logic met, rotated to the gear contact of respective channel by corresponding rotary switch S, and press input button SP, now this road signal is bypassed.nullSuch as，When the safety monitoring assembly A in A channel breaks down or other situations，Need safety monitoring assembly A is carried out bypass process，Then now，The action cutter-contact point of rotary switch S is placed in 1 gear contact by us，And press input button SP，Now safety monitoring assembly A is bypassed，Simultaneously，The input circuit of all relays in A channel relay group is switched on，Relay in A channel relay group is started working，The output loop of all relays in A channel relay group is connected，Namely 8 signalling contacts in A channel relay group are all grounded，Therefore，Bypass signal contact A passage BP1、Bypass signal contact A passage BP2、The bypass signal contact A equal ground connection of passage BP3，Due to bypass signal contact A passage BP1、Bypass signal contact A passage BP2、Bypass signal contact A passage BP3 and the protection signal A1 from safety monitoring assembly A、Protection signal A2、Protection signal A3 one_to_one corresponding series connection，Form "AND" logical relation，Therefore，Protection signal A1、Protection signal A2、Protection signal A3 is all pulled low，Safety monitoring assembly A now is considered as output low level，Reach the purpose that safety monitoring assembly A is carried out to be bypassed，Now this Protection parameters is met relation from 2/3 and becomes 1/2 and meet relation，Whether reactor protection system makes the factor protection signal deciding by safety monitoring assembly B and safety monitoring assembly C of protection act.
nullSame，When the safety monitoring assembly B in channel B breaks down or other situations，Need safety monitoring assembly B is carried out bypass process，Then now，The action cutter-contact point of rotary switch S is placed in 2 gear contacts by us，And press input button SP，Now safety monitoring assembly B is bypassed，Simultaneously，The input circuit of all relays in channel B relay group is switched on，Relay in channel B relay group is started working，The output loop of all relays in channel B relay group is connected，Namely 8 signalling contacts in channel B relay group are all grounded，Therefore，Bypass signal contact channel B BP1、Bypass signal contact channel B BP2、The bypass signal contact equal ground connection of channel B BP3，Due to bypass signal contact channel B BP1、Bypass signal contact channel B BP2、Bypass signal contact channel B BP3 and the protection signal B1 from safety monitoring assembly B、Protection signal B2、Protection signal B3 one_to_one corresponding series connection，Form "AND" logical relation，Therefore，Protection signal B1、Protection signal B2、Protection signal B3 is all pulled low，Safety monitoring assembly B now is considered as output low level，Reach the purpose that safety monitoring assembly B is carried out to be bypassed，Now this Protection parameters is met relation from 2/3 and becomes 1/2 and meet relation，Whether reactor protection system makes the factor protection signal deciding by safety monitoring assembly A and safety monitoring assembly C of protection act.
nullSame，When the safety monitoring assembly C in C-channel breaks down or other situations，Need safety monitoring assembly B is carried out bypass process，Then now，The action cutter-contact point of rotary switch S is placed in 3 gear contacts by us，And press input button SP，Now safety monitoring assembly C is bypassed，Simultaneously，The input circuit of all relays in C-channel relay group is switched on，Relay in C-channel relay group is started working，The output loop of all relays in C-channel relay group is connected，Namely 8 signalling contacts in C-channel relay group are all grounded，Therefore，Bypass signal contact C-channel BP1、Bypass signal contact C-channel BP2、The bypass signal contact equal ground connection of C-channel BP3，Due to bypass signal contact C-channel BP1、Bypass signal contact C-channel BP2、Bypass signal contact C-channel BP3 and the protection signal C1 from safety monitoring assembly C、Protection signal C2、Protection signal C3 one_to_one corresponding series connection，Form "AND" logical relation，Therefore，Protection signal C1、Protection signal C2、Protection signal C3 is all pulled low，Safety monitoring assembly C now is considered as output low level，Reach the purpose that safety monitoring assembly C is carried out to be bypassed，Now this Protection parameters is met relation from 2/3 and becomes 1/2 and meet relation，Whether reactor protection system makes the factor protection signal deciding by safety monitoring assembly A and safety monitoring assembly B of protection act.
nullAs shown in Figure 2，In this circuit diagram，There are 12 relays，Relay K 1、Relay K 2、Relay K 3、Relay K 4 forms A channel relay group，Relay K 5、Relay K 6、Relay K 7、Relay K 8 forms channel B relay group，Relay K 9、Relay K 10、Relay K 11、Relay K 12 forms C-channel relay group，Rotary switch S is when 1 gear contact，Relay K 1、Relay K 2、Relay K 3、Relay K 4 is all energized work，The whole no power of all the other relays does not work，And rotary switch S is when 2 gear contact，Relay K 5、Relay K 6、Relay K 7、Relay K 8 is all energized work，The whole no power of all the other relays does not work，And rotary switch S is when 3 gear contact，Relay K 9、Relay K 10、Relay K 11、Relay K 12 is all energized work，The whole no power of all the other relays does not work，Fig. 2 is only a kind of circuit realizing above-mentioned functions，Other equivalent circuits can also be adopted to realize.
As shown in Figure 4; when rotary switch S is when 1 gear contact; bypass signal contact A passage PB1 is in closed communicating to low level; now it is pulled down with the bypass signal contact A passage BP1 protection signalling contact A1 connected; corresponding safety monitoring assembly A is bypassed; and bypass signal contact channel B BP1 and bypass signal contact C-channel BP1 is off, protection signalling contact B1 and protection signalling contact C1 is efficiently entering in safe logic assembly A.In like manner; when rotary switch S is when 2 gear contact; bypass signal contact channel B PB1 is in closed communicating to low level; now; the protection signalling contact B1 connected with bypass signal contact channel B BP1 is pulled down; corresponding safety monitoring assembly B is bypassed, and bypass signal contact A passage BP1 and bypass signal contact C-channel BP1 is off, and protection signalling contact A1 and protection signalling contact C1 is efficiently entering in safe logic assembly A.In like manner; when rotary switch S is when 3 gear contact; bypass signal contact C-channel PB1 is in closed communicating to low level; now; the protection signalling contact C1 connected with bypass signal contact C-channel BP1 is pulled down; corresponding safety monitoring assembly C is bypassed, and bypass signal contact A passage BP1 and bypass signal contact channel B BP1 is off, and protection signalling contact A1 and protection signalling contact B1 is efficiently entering in safe logic assembly A.
Embodiment 2
As shown in Figure 5.
On the basis of embodiment 1, preferably, due in said system, the choosing of bypass signal contact adopts random chooses mode, therefore, its embodiment exists after 2 signalling contacts chosen on the output loop of same relay collect and form bypass signal contact, it is therefore assumed that this relay breaks down, then can not closing the output loop changing relay, therefore above-mentioned 2 signalling contacts will not ground connection, therefore cannot be carried out bypass to process, bypass system at this moment is insecure.Therefore, the present invention is in order to avoid the appearance of above-mentioned situation, adopt the following line plan of establishment, namely the output loop adopting any one relay chooses a signalling contact, a contact is chosen again on the output loop of another one relay, these 2 signalling contacts are collected formation bypass signal contact, after so arranging, can reach to increase the purpose of bypass signal stability, even if a relay fault, but the bypass signal contact that the signalling contact owing to there are 2 different relays is constituted, its bypass signal contact is still in the state being pulled down, its level is the state of zero.
Based on above-mentioned preferred design principle, preferably, 4 relays of A channel relay group are respectively as follows: relay K 1, relay K 2, relay K 3, relay K 4, the outfan of the output loop of relay K 1 possesses signalling contact K1-1 and signalling contact K1-2, the outfan of the output loop of relay K 2 possesses signalling contact K2-1 and signalling contact K2-2, the outfan of the output loop of relay K 3 possesses signalling contact K3-1 and signalling contact K3-2, the outfan of the output loop of relay K 4 possesses signalling contact K4-1 and signalling contact K4-2, the output loop of relay K 4 is connected on light warning signaling system；Signalling contact K1-1 and signalling contact K2-1 collects composition bypass signal contact A passage BP1, signalling contact K3-1 and signalling contact K2-2 collects composition bypass signal contact A passage BP2, signalling contact K3-2 and signalling contact K1-2 and collects composition bypass signal contact A passage BP3.
Based on above-mentioned preferred design principle, preferably, 4 relays of channel B relay group are respectively as follows: relay K 5, relay K 6, relay K 7, relay K 8, the outfan of the output loop of relay K 5 possesses signalling contact K5-1 and signalling contact K5-2, output end signal contact K6-1 that the output loop of relay K 6 possesses and signalling contact K6-2, the outfan of the output loop of relay K 7 possesses signalling contact K7-1 and signalling contact K7-2, the outfan of the output loop of relay K 8 possesses signalling contact K8-1 and signalling contact K8-2, the output loop of relay K 8 is connected on light warning signaling system；Signalling contact K5-1 and signalling contact K6-1 collects composition bypass signal contact channel B BP1, signalling contact K7-1 and signalling contact K6-2 collects composition bypass signal contact channel B BP2, signalling contact K7-2 and signalling contact K5-2 and collects composition bypass signal contact channel B BP3.
Based on above-mentioned preferred design principle, preferably, 4 relays of C-channel relay group are respectively as follows: relay K 9, relay K 10, relay K 11, relay K 12, the outfan of the output loop of relay K 9 possesses signalling contact K9-1 and signalling contact K9-2, the outfan road exported back of relay K 10 possesses signalling contact K10-1 and signalling contact K10-2, the outfan of the output loop of relay K 11 possesses signalling contact K11-1 and signalling contact K11-2, the outfan of the output loop of relay K 12 possesses signalling contact K12-1 and signalling contact K12-2, the output loop of relay K 12 is connected on light warning signaling system；Signalling contact K9-1 and signalling contact K10-1 collects composition bypass signal contact C-channel BP1, signalling contact K11-1 and signalling contact K10-2 collects composition bypass signal contact C-channel BP2, signalling contact K11-2 and signalling contact K9-2 and collects composition bypass signal contact C-channel BP3.
Preferably, described safe logic assembly A, safe logic assembly B, safe logic assembly C include 2/3 and meet logical block.
Preferably, the input circuit of each relay is parallel with diode, forms control module, the input of this control module and the connection of corresponding gear contact, the output head grounding of this control module after the input circuit of relay and diodes in parallel.
Preferably, 1 gear contact is also in series with diode VD13, and 2 gear contacts are also in series with diode VD14, and 3 gear contacts are also in series with ground connection after diode VD15, diode VD13, diode VD14, diode VD15 simultaneously series resistor R, light emitting diode H.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as adopting the design principle of the present invention, and the change carrying out non-creativeness work on this basis and making, all should belong within protection scope of the present invention.
Claims (7)
1. reactor protection system two from three meets maintenance bypass system, it is characterised in that:
nullIncluding reactor protection system，Reactor protection system includes the safety monitoring assembly A being positioned at A channel、It is positioned at the safety monitoring assembly B of channel B、It is positioned at the safety monitoring assembly C of C-channel，Also include the safe logic assembly A being positioned at A channel、It is positioned at the safe logic assembly B of channel B、It is positioned at the safe logic assembly C of C-channel，Safety monitoring assembly A output has protection signal A1、Protection signal A2、Protection signal A3，Safety monitoring assembly B output has protection signal B1、Protection signal B2、Protection signal B3，Safety monitoring assembly C output has protection signal C1、Protection signal C2、Protection signal C3，Safe logic assembly A receives protection signal A1、Protection signal B1、Protection signal C1，Safe logic assembly B receives protection signal A2、Protection signal B2、Protection signal C2，Safe logic assembly C receives protection signal A3、Protection signal B3、Protection signal C3；
Logic bypass block is met including 2/3,2/3 meets the rotary switch S that logic bypass block includes having four gear contacts, rotary switch S has 0 gear contact, 1 gear contact, 2 gear contacts, 3 gear contacts, the action cutter-contact point series connection of rotary switch S puts into button SP and is connected to power supply, and the 0 gear contact of rotary switch S is unsettled；
2/3 meets logic bypass block also includes 12 relays, 12 relays are normally opened relay, in 12 relays, every 4 is one group, the input of the input circuit of 4 relays of first group is all connected to 1 gear contact, outfan all ground connection of the input circuit of 4 relays of first group, the input of the input circuit of 4 relays of second group is all connected to 2 gear contacts, outfan all ground connection of the input circuit of 4 relays of second group, the input of the input circuit of 4 relays of the 3rd group is all connected to 3 gear contacts, outfan all ground connection of the input circuit of 4 relays of the 3rd group；
4 relays of first group are A channel relay group, and 4 relays of second group are channel B relay group, and 4 relays of the 3rd group are C-channel relay group；
The outfan of the output loop of each relay in A channel relay group all possesses 2 signalling contacts, the input end grounding of its output loop, A channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of A channel relay group, 2 signalling contacts are had to collect composition bypass signal contact A passage BP1, 2 signalling contacts are separately had to collect composition bypass signal contact A passage BP2, 2 signalling contacts are separately had to collect composition bypass signal contact A passage BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact A passage BP1 connects with protection signal A1, bypass signal contact A passage BP2 connects with protection signal A2, bypass signal contact A passage BP3 connects with protection signal A3；
The outfan of the output loop of each relay in channel B relay group all possesses 2 signalling contacts, the input end grounding of its output loop, channel B relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of channel B relay group, 2 signalling contacts are had to collect composition bypass signal contact channel B BP1, 2 signalling contacts are separately had to collect composition bypass signal contact channel B BP2, 2 signalling contacts are separately had to collect composition bypass signal contact channel B BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact channel B BP1 connects with protection signal B1, bypass signal contact channel B BP2 connects with protection signal B2, bypass signal contact channel B BP3 connects with protection signal B3；
The outfan of the output loop of each relay in C-channel relay group all possesses 2 signalling contacts, the input end grounding of its output loop, C-channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of C-channel relay group, 2 signalling contacts are had to collect composition bypass signal contact C-channel BP1, 2 signalling contacts are separately had to collect composition bypass signal contact C-channel BP2, 2 signalling contacts are separately had to collect composition bypass signal contact C-channel BP3, separately there are 2 signalling contacts to collect and go to light warning signaling system, bypass signal contact C-channel BP1 connects with protection signal C1, bypass signal contact C-channel BP2 connects with protection signal C2, bypass signal contact C-channel BP3 connects with protection signal C3.
2. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterized in that: 4 relays of A channel relay group are respectively as follows: relay K 1, relay K 2, relay K 3, relay K 4, the outfan of the output loop of relay K 1 possesses signalling contact K1-1 and signalling contact K1-2, the outfan of the output loop of relay K 2 possesses signalling contact K2-1 and signalling contact K2-2, the outfan of the output loop of relay K 3 possesses signalling contact K3-1 and signalling contact K3-2, the outfan of the output loop of relay K 4 possesses signalling contact K4-1 and signalling contact K4-2, the output loop of relay K 4 is connected on light warning signaling system；Signalling contact K1-1 and signalling contact K2-1 collects composition bypass signal contact A passage BP1, signalling contact K3-1 and signalling contact K2-2 collects composition bypass signal contact A passage BP2, signalling contact K3-2 and signalling contact K1-2 and collects composition bypass signal contact A passage BP3.
3. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterized in that: 4 relays of channel B relay group are respectively as follows: relay K 5, relay K 6, relay K 7, relay K 8, the outfan of the output loop of relay K 5 possesses signalling contact K5-1 and signalling contact K5-2, the outfan of the output loop of relay K 6 possesses signalling contact K6-1 and signalling contact K6-2, the outfan of the output loop of relay K 7 possesses signalling contact K7-1 and signalling contact K7-2, the outfan of the output loop of relay K 8 possesses signalling contact K8-1 and signalling contact K8-2, the output loop of relay K 8 is connected on light warning signaling system；Signalling contact K5-1 and signalling contact K6-1 collects composition bypass signal contact channel B BP1, signalling contact K7-1 and signalling contact K6-2 collects composition bypass signal contact channel B BP2, signalling contact K7-2 and signalling contact K5-2 and collects composition bypass signal contact channel B BP3.
4. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterized in that: 4 relays of C-channel relay group are respectively as follows: relay K 9, relay K 10, relay K 11, relay K 12, the outfan of the output loop of relay K 9 possesses signalling contact K9-1 and signalling contact K9-2, the outfan of the output loop of relay K 10 possesses signalling contact K10-1 and signalling contact K10-2, the outfan of the output loop of relay K 11 possesses signalling contact K11-1 and signalling contact K11-2, the outfan of the output loop of relay K 12 possesses signalling contact K12-1 and signalling contact K12-2, the output loop of relay K 12 is connected on light warning signaling system；Signalling contact K9-1 and signalling contact K10-1 collects composition bypass signal contact C-channel BP1, signalling contact K11-1 and signalling contact K10-2 collects composition bypass signal contact C-channel BP2, signalling contact K11-2 and signalling contact K9-2 and collects composition bypass signal contact C-channel BP3.
5. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterised in that: described safe logic assembly A, safe logic assembly B, safe logic assembly C include 2/3 and meet logical block.
6. reactor protection system two from three according to claim 1 meets maintenance bypass system; it is characterized in that: the input circuit of each relay is parallel with diode; control module is formed after the input circuit of relay and diodes in parallel; the input of this control module connects with corresponding gear contact, the output head grounding of this control module.
7. reactor protection system two from three according to claim 1 meets maintenance bypass system; it is characterized in that: 1 gear contact is also in series with diode VD13; 2 gear contacts are also in series with diode VD14; 3 gear contacts are also in series with ground connection after diode VD15, diode VD13, diode VD14, diode VD15 simultaneously series resistor R, light emitting diode H.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782702A (en) * | 2016-12-28 | 2017-05-31 | 中核核电运行管理有限公司 | A kind of reactor protection system external output signal test loop method for designing |
| CN108735309A (en) * | 2018-02-07 | 2018-11-02 | 中国原子能科学研究院 | The in-service verifying attachment of reactor protection system |
| CN109904034A (en) * | 2019-04-09 | 2019-06-18 | 中国核动力研究设计院 | Time-delay mechanism is controlled under a kind of hot environment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783268A (en) * | 1970-07-30 | 1974-01-01 | Siemens Ag | Device for measuring activity concentration in primary circulation systems of nuclear reactors |
| JPH08317546A (en) * | 1995-05-22 | 1996-11-29 | Chiyuuritsu Denki Kk | Harmonic detecting method and harmonic monitor |
| CN102157208A (en) * | 2010-11-12 | 2011-08-17 | 中广核工程有限公司 | Nuclear power plant reactor protection system |
| CN204145015U (en) * | 2014-10-16 | 2015-02-04 | 国家电网公司 | Electrical test special mobile power supply |
| CN104348133A (en) * | 2013-08-09 | 2015-02-11 | 中核核电运行管理有限公司 | Internal power supply interlocking controller of reactor protection system |
| CN104361915A (en) * | 2014-09-24 | 2015-02-18 | 中国核动力研究设计院 | Constant value test system of reactor key process measurement parameters and test method |
| CN105575448A (en) * | 2015-12-15 | 2016-05-11 | 中广核工程有限公司 | Nuclear power station reactor protection system and safety control method therein |
-
2016
- 2016-05-18 CN CN201610328638.7A patent/CN105788687B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783268A (en) * | 1970-07-30 | 1974-01-01 | Siemens Ag | Device for measuring activity concentration in primary circulation systems of nuclear reactors |
| JPH08317546A (en) * | 1995-05-22 | 1996-11-29 | Chiyuuritsu Denki Kk | Harmonic detecting method and harmonic monitor |
| CN102157208A (en) * | 2010-11-12 | 2011-08-17 | 中广核工程有限公司 | Nuclear power plant reactor protection system |
| CN104348133A (en) * | 2013-08-09 | 2015-02-11 | 中核核电运行管理有限公司 | Internal power supply interlocking controller of reactor protection system |
| CN104361915A (en) * | 2014-09-24 | 2015-02-18 | 中国核动力研究设计院 | Constant value test system of reactor key process measurement parameters and test method |
| CN204145015U (en) * | 2014-10-16 | 2015-02-04 | 国家电网公司 | Electrical test special mobile power supply |
| CN105575448A (en) * | 2015-12-15 | 2016-05-11 | 中广核工程有限公司 | Nuclear power station reactor protection system and safety control method therein |
Non-Patent Citations (2)
| Title |
|---|
| 姚芝强: "核电站数字化反应堆保护系统旁通设计研究", 《自动化博览》 * |
| 葛源 等: "HFETR过程安全参数测量装置设计与应用", 《核动力工程》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782702A (en) * | 2016-12-28 | 2017-05-31 | 中核核电运行管理有限公司 | A kind of reactor protection system external output signal test loop method for designing |
| CN106782702B (en) * | 2016-12-28 | 2018-07-06 | 中核核电运行管理有限公司 | A kind of reactor protection system external output signal test loop design method |
| CN108735309A (en) * | 2018-02-07 | 2018-11-02 | 中国原子能科学研究院 | The in-service verifying attachment of reactor protection system |
| CN108735309B (en) * | 2018-02-07 | 2020-10-09 | 中国原子能科学研究院 | In-service inspection device for reactor protection system |
| CN109904034A (en) * | 2019-04-09 | 2019-06-18 | 中国核动力研究设计院 | Time-delay mechanism is controlled under a kind of hot environment |
| CN109904034B (en) * | 2019-04-09 | 2020-02-07 | 中国核动力研究设计院 | Control delay device under high temperature environment |
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