CN105788687B - Reactor protection system two from three meets maintenance bypass system - Google Patents
Reactor protection system two from three meets maintenance bypass system Download PDFInfo
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- CN105788687B CN105788687B CN201610328638.7A CN201610328638A CN105788687B CN 105788687 B CN105788687 B CN 105788687B CN 201610328638 A CN201610328638 A CN 201610328638A CN 105788687 B CN105788687 B CN 105788687B
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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
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention discloses reactor protection system two from three and meets maintenance bypass system, including reactor protection system, meet logic bypass block including 2/3, 2/3, which meets logic bypass block, includes the rotary switch S with four gear contacts, 2/3, which meets logic bypass block, also includes 12 relays, 12 relays are normally opened relay, every 4 are one group in 12 relays, the input of the input circuit of first group of 4 relays is all connected to 1 gear contact, the input of the input circuit of second group of 4 relays is all connected to 2 gear contacts, the input of the input circuit of 3rd group of 4 relays is all connected to 3 gear contacts, the present invention is by the way that the by-pass collar is arranged between safety monitoring assembly and safe logic assembly, add the function of protection system maintenance bypass.On-line maintenance and the experiment of equipment are realized, reduction unplanned shutdown probability caused by equipment fault improves the performability of reactor, ensured productivity effect.
Description
Technical field
The present invention relates to reactor protection system safety control technology, and in particular to has arrived reactor protection system two from three
Meet maintenance bypass system.
Background technology
Reactor protection system emergency shut-down unit totally upper 2/3（Two from three）Combination of channels, each security logic leads to
Using local 2/3 structure type met in road combination, safe logic assembly and the scram breaker composition of triple channel are more
The structure that passage overall 2/3 meets.
The signal of safety monitoring assembly monitoring is by core measurement parameter, process measurement parameter, protection system equipment status and is
Four kinds of power supply state, 24 kinds of signal type protection input signal of uniting is constituted.Send into safe logic assembly 24 kinds of protection signals by
" 2/3 logic meets " and " 1/2 logic meets " two kinds of parts meet mode and constituted.
Safe logic assembly receives the contact signal of safety monitoring assembly output, under the operation of reactor normal power, contact
Closure conducting state is completely in, the signal of transmission is logical one signal.
As shown in figure 1, the structure of reactor protection system is logical including the safety monitoring assembly A in A channel, positioned at B
Safety monitoring assembly B in road, the safety monitoring assembly C in C-channel, in addition to the security logic dress in A channel
A, the safe logic assembly B in channel B, the safe logic assembly C in C-channel are put, safety monitoring assembly A outputs have
Protection signal A1, protection signal A2, protection signal A3, safety monitoring assembly B outputs have protection signal B1, protection signal B2, protected
Signal B3 is protected, safety monitoring assembly C outputs have protection signal C1, protection signal C2, protection signal C3, and safe logic assembly A connects
Protection signal A1, protection signal B1, protection signal C1 are received, safe logic assembly B receives protection signal A2, protection signal B2, protected
Signal C2 is protected, safe logic assembly C receives protection signal A3, protection signal B3, protection signal C3.
During reactor operation, because unplanned shutdown reduces reactor caused by safety monitoring assembly equipment fault
Performability, in order to realize under Power operation operating mode to the replacing of safety monitoring assembly faulty equipment, maintenance, verification or school
Standard is, it is necessary to artificially cancel the behavior and measure of one or more functions of the equipments in protection system, i.e. maintenance bypass, in existing skill
In art, related data is not found.
The content of the invention
Object of the present invention is to provide a kind of reactor protection system that by-pass collar is provided to reactor protection system
System two from three meets maintenance bypass system, and the system meets mode for the two from three of protection input signal, devises bypass side
Formula, by the way that the by-pass collar is arranged between safety monitoring assembly and safe logic assembly, is added by protection system maintenance
Logical function, realizes on-line maintenance and the experiment of equipment, and reduction unplanned shutdown probability caused by equipment fault had both ensured anti-
The operation safety of heap is answered, ensures the continuity of operation test again, improves the performability of reactor.
To solve disadvantages mentioned above, technical scheme is as follows：
Reactor protection system two from three meets maintenance bypass system,
Including reactor protection system, reactor protection system is including the safety monitoring assembly A in A channel, positioned at B
Safety monitoring assembly B in passage, the safety monitoring assembly C in C-channel, in addition to the security logic in A channel
Device A, the safe logic assembly B in channel B, the safe logic assembly C in C-channel, safety monitoring assembly A outputs
Have protection signal A1, protection signal A2, a protection signal A3, safety monitoring assembly B outputs have protection signal B1, protection signal B2,
Protection signal B3, safety monitoring assembly C output have protection signal C1, protection signal C2, protection signal C3, safe logic assembly A
Receive protection signal A1, protection signal B1, protection signal C1, safe logic assembly B receive protection signal A2, protection signal B2,
Protection signal C2, safe logic assembly C receive protection signal A3, protection signal B3, protection signal C3；
Meet logic bypass block including 2/3,2/3, which meets logic bypass block, includes the rotation with four gear contacts
S is switched, rotary switch S has 0 gear contact, 1 gear contact, 2 gear contacts, 3 gear contacts, and rotary switch S action cutter-contact point series connection is thrown
Enter button SP and be connected to power supply, rotary switch S 0 gear contact is hanging；
2/3, which meets logic bypass block, also includes 12 relays, and 12 relays are normally opened relay, 12 relays
The input of every 4 input circuits for one group, first group of 4 relays is all connected to 1 gear contact, the 4 of first group in device
The output end of the input circuit of individual relay is all grounded, and the input of the input circuit of second group of 4 relays is all connected to 2
Contact is kept off, the output end of the input circuit of second group of 4 relays is all grounded, the input circuit of the 3rd group of 4 relays
Input be all connected to 3 gear contacts, the output end of the input circuit of the 3rd group of 4 relays is all grounded；
First group of 4 relays are A channel relay group, and second group of 4 relays are channel B relay group, the
Three groups of 4 relays are C-channel relay group；
The output end of the output loop of each relay in A channel relay group all possesses 2 signalling contacts, and its is defeated
Go out the input end grounding in loop, A channel relay group possesses 8 signalling contacts altogether, touched in 8 signals of A channel relay group
In point, there are 2 signalling contacts to collect composition bypass signal contact A passage BP1, separately there are 2 signalling contacts to collect composition bypass letter
Number contact A passage BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact A passage BP3, separately have 2 signalling contacts remittances
Collection goes to light warning signal system, and bypass signal contact A passage BP1 connects with protection signal A1, bypass signal contact A passage
BP2 connects with protection signal A2, and bypass signal contact A passage BP3 connects with protection signal A3；
The output end of the output loop of each relay in channel B relay group all possesses 2 signalling contacts, and its is defeated
Go out the input end grounding in loop, channel B relay group possesses 8 signalling contacts altogether, touched in 8 signals of channel B relay group
In point, there are 2 signalling contacts to collect composition bypass signal contact channel B BP1, separately there are 2 signalling contacts to collect composition bypass letter
Number contact channel B BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact channel B BP3, separately have 2 signalling contacts remittances
Collection goes to light warning signal system, and bypass signal contact channel B BP1 connects with protection signal B1, bypass signal contact channel B
BP2 connects with protection signal B2, and bypass signal contact channel B BP3 connects with protection signal B3；
The output end of the output loop of each relay in C-channel relay group all possesses 2 signalling contacts, and its is defeated
Go out the input end grounding in loop, C-channel relay group possesses 8 signalling contacts altogether, touched in 8 signals of C-channel relay group
In point, there are 2 signalling contacts to collect composition bypass signal contact C-channel BP1, separately there are 2 signalling contacts to collect composition bypass letter
Number contact C-channel BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact C-channel BP3, separately have 2 signalling contacts remittances
Collection goes to light warning signal system, and bypass signal contact C-channel BP1 connects with protection signal C1, bypass signal contact C-channel
BP2 connects with protection signal C2, and bypass signal contact C-channel BP3 connects with protection signal C3.
The design principle of said system is：When rotary switch S action cutter-contact point is placed in 0 gear contact, expression is not put into
By-pass collar, when rotary switch S action cutter-contact point is placed in 1 gear contact, represents that the bypass signal is put into A logical channels
Bypass, when rotary switch S action cutter-contact point is placed in 2 gear contact, represents that the bypass signal enters B logic passage and puts into side
It is logical, when rotary switch S action cutter-contact point is placed in 3 gear contacts, represent that the bypass signal enters B logic passage and puts into bypass；Throw
Enter button SP to be pressed, during if desired for a certain signalling channel that 2/3 logic meets being bypassed, by corresponding rotary switch S
On rotation to the gear contact of respective channel, and input button SP is pressed, now the road signal is bypassed.For example, when in A channel
Safety monitoring assembly A break down or other situations, it is necessary to safety monitoring assembly A carry out bypass processing, then now, we
Rotary switch S action cutter-contact point is placed in 1 gear contact, and presses input button SP, now safety monitoring assembly A is bypassed,
Meanwhile, the input circuit of all relays in A channel relay group is switched on, and the relay in A channel relay group starts
Work, the output loop of all relays in A channel relay group is connected, i.e., 8 signals in A channel relay group are touched
Point is grounded, therefore, bypass signal contact A passage BP1, bypass signal contact A passage BP2, bypass signal contact A passage
BP3 is grounded, due to bypass signal contact A passage BP1, bypass signal contact A passage BP2, bypass signal contact A passage BP3
Correspond and connect with the protection signal A1 from safety monitoring assembly A, protection signal A2, protection signal A3, form "AND" and patrol
The relation of collecting, therefore, protection signal A1, protection signal A2, protection signal A3 are pulled low, and safety monitoring assembly A now is considered as
Low level is exported, the purpose for being bypassed safety monitoring assembly A is reached, now the Protection parameters meet relation from 2/3 and are changed into
1/2 meets relation, and whether reactor protection system makes the factor of protection act by safety monitoring assembly B and safety monitoring assembly
C protection signal is determined.
Likewise, when the safety monitoring assembly B failures in channel B or other situations are, it is necessary to safety monitoring assembly B
Bypass processing is carried out, then now, rotary switch S action cutter-contact point is placed in 2 gear contacts by us, and presses input button SP,
Now safety monitoring assembly B is bypassed, meanwhile, the input circuit of all relays in channel B relay group is switched on, and B leads to
Relay in road relay group is started working, and the output loop of all relays in channel B relay group is connected, i.e. B
8 signalling contacts in passage relay group are grounded, therefore, and bypass signal contact channel B BP1, bypass signal contact B lead to
Road BP2, bypass signal contact channel B BP3 are grounded, 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
Series connection is corresponded, "AND" logical relation is formed, therefore, protection signal B1, protection signal B2, protection signal B3 are pulled low,
Safety monitoring assembly B now is considered as output low level, reaches the purpose for being bypassed safety monitoring assembly B, now the guarantor
Protect parameter and from 2/3 meet relation and be changed into 1/2 and meet relation, whether reactor protection system makes the factor of protection act by safety
Monitoring device A and safety monitoring assembly C protection signal are determined.
Likewise, when the safety monitoring assembly C failures in C-channel or other situations are, it is necessary to safety monitoring assembly B
Bypass processing is carried out, then now, rotary switch S action cutter-contact point is placed in 3 gear contacts by us, and presses input button SP,
Now safety monitoring assembly C is bypassed, meanwhile, the input circuit of all relays in C-channel relay group is switched on, and C leads to
Relay in road relay group is started working, and the output loop of all relays in C-channel relay group is connected, i.e. C
8 signalling contacts in passage relay group are grounded, therefore, and bypass signal contact C-channel BP1, bypass signal contact C lead to
Road BP2, bypass signal contact C-channel BP3 are grounded, 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
Series connection is corresponded, "AND" logical relation is formed, therefore, protection signal C1, protection signal C2, protection signal C3 are pulled low,
Safety monitoring assembly C now is considered as output low level, reaches the purpose for being bypassed safety monitoring assembly C, now the guarantor
Protect parameter and from 2/3 meet relation and be changed into 1/2 and meet relation, whether reactor protection system makes the factor of protection act by safety
Monitoring device A and safety monitoring assembly B protection signal are determined.
It is preferred that, because in said system, the selection of bypass signal contact uses random selection mode, therefore, its
There is formation bypass signal after 2 signalling contacts on the output loop for choosing same relay collect in embodiment to touch
Point, it is therefore assumed that the relay breaks down, then can not close the output loop for changing relay, therefore above-mentioned 2 signalling contacts
It will not be grounded, therefore bypass processing can not be carried out, bypass system at this moment is insecure.Therefore, the present invention is in order to avoid upper
The appearance of situation is stated, using the following line plan of establishment, i.e., a signal is chosen using the output loop of any one relay
Contact, then a contact is chosen on the output loop of another relay, this 2 signalling contacts are collected to form bypass letter
Number contact, after so setting, can reach the purpose of increase bypass signal stability, though a relay failure, but due to
The bypass signal contact constituted in the presence of the signalling contact of 2 different relays, its bypass signal contact, which remains unchanged, is in what is be pulled down
State, the state that its level is zero.
Based on above-mentioned preferred design principle, it is preferred that 4 relays of A channel relay group are respectively：Relay
K1, relay K2, relay K3, relay K4, the output end of relay K1 output loop possess signalling contact K1-1 and letter
Number contact K1-2, the output end of relay K2 output loop possesses signalling contact K2-1 and signalling contact K2-2, relay K3
The output end of output loop possess signalling contact K3-1 and signalling contact K3-2, the output end tool of relay K4 output loop
Standby signalling contact K4-1 and signalling contact K4-2, relay K4 output loop is connected on light warning signal system；Signal is touched
Point K1-1 and signalling contact K2-1 collect composition bypass signal contact A passage BP1, signalling contact K3-1 and signalling contact K2-2 and converged
Collection composition bypass signal contact A passage BP2, signalling contact K3-2 and signalling contact K1-2 collect composition bypass signal contact A and led to
Road BP3.
Based on above-mentioned preferred design principle, it is preferred that 4 relays of channel B relay group are respectively：Relay
K5, relay K6, relay K7, relay K8, the output end of relay K5 output loop possess signalling contact K5-1 and letter
Number contact K5-2, the output end of relay K6 output loop possesses signalling contact K6-1 and signalling contact K6-2, relay K7
The output end of output loop possess signalling contact K7-1 and signalling contact K7-2, the output end tool of relay K8 output loop
Standby signalling contact K8-1 and signalling contact K8-2, relay K8 output loop is connected on light warning signal system；Signal is touched
Point K5-1 and signalling contact K6-1 collect composition bypass signal contact channel B BP1, signalling contact K7-1 and signalling contact K6-2 and converged
Collection composition bypass signal contact channel B BP2, signalling contact K7-2 and signalling contact K5-2 collect composition bypass signal contact B and led to
Road BP3.
Based on above-mentioned preferred design principle, it is preferred that 4 relays of C-channel relay group are respectively：Relay
K9, relay K10, relay K11, relay K12, the output end of relay K9 output loop possess signalling contact K9-1 and
Signalling contact K9-2, the output end of relay K10 output loop possesses signalling contact K10-1 and signalling contact K10-2, relay
The output end of device K11 output loop possesses signalling contact K11-1 and signalling contact K11-2, relay K12 output loop
Output end possesses signalling contact K12-1 and signalling contact K12-2, and relay K12 output loop is connected on light warning signal
System；Signalling contact K9-1 and signalling contact K10-1 collect 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.
It is preferred that, the safe logic assembly A, safe logic assembly B, safe logic assembly C meet logic including 2/3
Unit.
It is preferred that, the input circuit of each relay is parallel with diode, the input circuit and diode of relay
Control module is formed after parallel connection, the input of the control module and corresponding gear contact portion, the output end of the control module
Ground connection.
It is preferred that, 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
Diode VD15, diode VD13, diode VD14, diode VD15 are in series with while after series resistor R, light emitting diode H
Ground connection.
Effect of the invention is that：The present invention by the by-pass collar by being arranged on safety monitoring assembly and security logic dress
Between putting, the function of protection system maintenance bypass is added.After this maintenance bypass device, ensureing protection systemic-function just
On the premise of often playing, on-line maintenance and the experiment of equipment are realized, reduction unplanned shutdown probability caused by equipment fault is carried
The high performability of reactor, has ensured productivity effect.
Brief description of the drawings
Fig. 1 is the structural representation of reactor protection system.
Fig. 2 is 2/3 circuit diagram for meeting logic bypass block.
Fig. 3 is 2/3 logic connectivity diagram for meeting logic bypass block output bypass signal and reactor protection system.
Fig. 4 is the logic connectivity diagram that safe logic assembly A accesses bypass signal contact and protection signal contact.
Fig. 5 is that the signalling contact composition bypass signal of 2/3 output loop for meeting logic bypass block each relay is touched
The structural representation of point.
Embodiment
With reference to embodiment and its accompanying drawing, the present invention is described in further detail, but embodiments of the present invention
Not limited to this.
Embodiment 1
As shown in Figures 1 to 5.
Reactor protection system two from three meets maintenance bypass system,
Including reactor protection system, reactor protection system is including the safety monitoring assembly A in A channel, positioned at B
Safety monitoring assembly B in passage, the safety monitoring assembly C in C-channel, in addition to the security logic in A channel
Device A, the safe logic assembly B in channel B, the safe logic assembly C in C-channel, safety monitoring assembly A outputs
Have protection signal A1, protection signal A2, a protection signal A3, safety monitoring assembly B outputs have protection signal B1, protection signal B2,
Protection signal B3, safety monitoring assembly C output have protection signal C1, protection signal C2, protection signal C3, safe logic assembly A
Receive protection signal A1, protection signal B1, protection signal C1, safe logic assembly B receive protection signal A2, protection signal B2,
Protection signal C2, safe logic assembly C receive protection signal A3, protection signal B3, protection signal C3；
Meet logic bypass block including 2/3,2/3, which meets logic bypass block, includes the rotation with four gear contacts
S is switched, rotary switch S has 0 gear contact, 1 gear contact, 2 gear contacts, 3 gear contacts, and rotary switch S action cutter-contact point series connection is thrown
Enter button SP and be connected to power supply, rotary switch S 0 gear contact is hanging；
2/3, which meets logic bypass block, also includes 12 relays, and 12 relays are normally opened relay, 12 relays
The input of every 4 input circuits for one group, first group of 4 relays is all connected to 1 gear contact, the 4 of first group in device
The output end of the input circuit of individual relay is all grounded, and the input of the input circuit of second group of 4 relays is all connected to 2
Contact is kept off, the output end of the input circuit of second group of 4 relays is all grounded, the input circuit of the 3rd group of 4 relays
Input be all connected to 3 gear contacts, the output end of the input circuit of the 3rd group of 4 relays is all grounded；
First group of 4 relays are A channel relay group, and second group of 4 relays are channel B relay group, the
Three groups of 4 relays are C-channel relay group；
The output end of the output loop of each relay in A channel relay group all possesses 2 signalling contacts, and its is defeated
Go out the input end grounding in loop, A channel relay group possesses 8 signalling contacts altogether, touched in 8 signals of A channel relay group
In point, there are 2 signalling contacts to collect composition bypass signal contact A passage BP1, separately there are 2 signalling contacts to collect composition bypass letter
Number contact A passage BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact A passage BP3, separately have 2 signalling contacts remittances
Collection goes to light warning signal system, and bypass signal contact A passage BP1 connects with protection signal A1, bypass signal contact A passage
BP2 connects with protection signal A2, and bypass signal contact A passage BP3 connects with protection signal A3；
The output end of the output loop of each relay in channel B relay group all possesses 2 signalling contacts, and its is defeated
Go out the input end grounding in loop, channel B relay group possesses 8 signalling contacts altogether, touched in 8 signals of channel B relay group
In point, there are 2 signalling contacts to collect composition bypass signal contact channel B BP1, separately there are 2 signalling contacts to collect composition bypass letter
Number contact channel B BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact channel B BP3, separately have 2 signalling contacts remittances
Collection goes to light warning signal system, and bypass signal contact channel B BP1 connects with protection signal B1, bypass signal contact channel B
BP2 connects with protection signal B2, and bypass signal contact channel B BP3 connects with protection signal B3；
The output end of the output loop of each relay in C-channel relay group all possesses 2 signalling contacts, and its is defeated
Go out the input end grounding in loop, C-channel relay group possesses 8 signalling contacts altogether, touched in 8 signals of C-channel relay group
In point, there are 2 signalling contacts to collect composition bypass signal contact C-channel BP1, separately there are 2 signalling contacts to collect composition bypass letter
Number contact C-channel BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact C-channel BP3, separately have 2 signalling contacts remittances
Collection goes to light warning signal system, and bypass signal contact C-channel BP1 connects with protection signal C1, bypass signal contact C-channel
BP2 connects with protection signal C2, and bypass signal contact C-channel BP3 connects with protection signal C3.
The design principle of said system is：When rotary switch S action cutter-contact point is placed in 0 gear contact, expression is not put into
By-pass collar, when rotary switch S action cutter-contact point is placed in 1 gear contact, represents that the bypass signal is put into A logical channels
Bypass, when rotary switch S action cutter-contact point is placed in 2 gear contact, represents that the bypass signal enters B logic passage and puts into side
It is logical, when rotary switch S action cutter-contact point is placed in 3 gear contacts, represent that the bypass signal enters B logic passage and puts into bypass；Throw
Enter button SP to be pressed, during if desired for a certain signalling channel that 2/3 logic meets being bypassed, by corresponding rotary switch S
On rotation to the gear contact of respective channel, and input button SP is pressed, now the road signal is bypassed.For example, when in A channel
Safety monitoring assembly A break down or other situations, it is necessary to safety monitoring assembly A carry out bypass processing, then now, we
Rotary switch S action cutter-contact point is placed in 1 gear contact, and presses input button SP, now safety monitoring assembly A is bypassed,
Meanwhile, the input circuit of all relays in A channel relay group is switched on, and the relay in A channel relay group starts
Work, the output loop of all relays in A channel relay group is connected, i.e., 8 signals in A channel relay group are touched
Point is grounded, therefore, bypass signal contact A passage BP1, bypass signal contact A passage BP2, bypass signal contact A passage
BP3 is grounded, due to bypass signal contact A passage BP1, bypass signal contact A passage BP2, bypass signal contact A passage BP3
Correspond and connect with the protection signal A1 from safety monitoring assembly A, protection signal A2, protection signal A3, form "AND" and patrol
The relation of collecting, therefore, protection signal A1, protection signal A2, protection signal A3 are pulled low, and safety monitoring assembly A now is considered as
Low level is exported, the purpose for being bypassed safety monitoring assembly A is reached, now the Protection parameters meet relation from 2/3 and are changed into
1/2 meets relation, and whether reactor protection system makes the factor of protection act by safety monitoring assembly B and safety monitoring assembly
C protection signal is determined.
Likewise, when the safety monitoring assembly B failures in channel B or other situations are, it is necessary to safety monitoring assembly B
Bypass processing is carried out, then now, rotary switch S action cutter-contact point is placed in 2 gear contacts by us, and presses input button SP,
Now safety monitoring assembly B is bypassed, meanwhile, the input circuit of all relays in channel B relay group is switched on, and B leads to
Relay in road relay group is started working, and the output loop of all relays in channel B relay group is connected, i.e. B
8 signalling contacts in passage relay group are grounded, therefore, and bypass signal contact channel B BP1, bypass signal contact B lead to
Road BP2, bypass signal contact channel B BP3 are grounded, 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
Series connection is corresponded, "AND" logical relation is formed, therefore, protection signal B1, protection signal B2, protection signal B3 are pulled low,
Safety monitoring assembly B now is considered as output low level, reaches the purpose for being bypassed safety monitoring assembly B, now the guarantor
Protect parameter and from 2/3 meet relation and be changed into 1/2 and meet relation, whether reactor protection system makes the factor of protection act by safety
Monitoring device A and safety monitoring assembly C protection signal are determined.
Likewise, when the safety monitoring assembly C failures in C-channel or other situations are, it is necessary to safety monitoring assembly B
Bypass processing is carried out, then now, rotary switch S action cutter-contact point is placed in 3 gear contacts by us, and presses input button SP,
Now safety monitoring assembly C is bypassed, meanwhile, the input circuit of all relays in C-channel relay group is switched on, and C leads to
Relay in road relay group is started working, and the output loop of all relays in C-channel relay group is connected, i.e. C
8 signalling contacts in passage relay group are grounded, therefore, and bypass signal contact C-channel BP1, bypass signal contact C lead to
Road BP2, bypass signal contact C-channel BP3 are grounded, 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
Series connection is corresponded, "AND" logical relation is formed, therefore, protection signal C1, protection signal C2, protection signal C3 are pulled low,
Safety monitoring assembly C now is considered as output low level, reaches the purpose for being bypassed safety monitoring assembly C, now the guarantor
Protect parameter and from 2/3 meet relation and be changed into 1/2 and meet relation, whether reactor protection system makes the factor of protection act by safety
Monitoring device A and safety monitoring assembly B protection signal are determined.
As shown in Fig. 2 in the circuit diagram, there are 12 relays, relay K1, relay K2, relay K3, relay
Device K4 constitutes A channel relay group, and relay K5, relay K6, relay K7, relay K8 constitute channel B relay group, after
Electrical equipment K9, relay K10, relay K11, relay K12 composition C-channel relay group, rotary switch S at 1 gear contact,
The whole energization work of relay K1, relay K2, relay K3, relay K4, remaining relay whole no power does not work, and
Rotary switch S is at 2 gear contact, the whole energization work of relay K5, relay K6, relay K7, relay K8, remaining after
Electrical equipment whole no powers do not work, and rotary switch S is at 3 gear contact, relay K9, relay K10, relay K11, after
Electrical equipment K12 whole energization work, remaining relay whole no power does not work, and Fig. 2 is only a kind of electricity for realizing above-mentioned functions
Road, can also be realized using other equivalent circuits.
As shown in figure 4, when rotary switch S is in 1 gear contact, bypass signal contact A passage PB1 is arrived in closed communicating
In low level, now it is pulled down with the bypass signal contact A passage BP1 protection signal contact As 1 connected, corresponding safety monitoring
Device A is bypassed, and bypass signal contact channel B BP1 and bypass signal contact C-channel BP1 are off, protection signal
Contact B1 and protection signal contact C1 are efficiently entering in safe logic assembly A.Similarly, when rotary switch S is in 2 gear contact,
Bypass signal contact channel B PB1 is in closed communicating to low level, now, is connected with bypass signal contact channel B BP1
Protection signal contact B1 is pulled down, and corresponding safety monitoring assembly B is bypassed, and bypass signal contact A passage BP1 and bypass are believed
Number contact C-channel BP1 is off, and protection signal contact A 1 and protection signal contact C1 are efficiently entering safe logic assembly
In A.Similarly, when rotary switch S is in 3 gear contact, bypass signal contact C-channel PB1 is in closed communicating to low level,
Now, the protection signal contact C1 connected with bypass signal contact C-channel BP1 is pulled down, and corresponding safety monitoring assembly C is other
It is logical, and bypass signal contact A passage BP1 and bypass signal contact channel B BP1 are off, the He of protection signal contact A 1
Protection signal contact B1 is efficiently entering in safe logic assembly A.
Embodiment 2
As shown in Figure 5.
On the basis of embodiment 1, it is preferred that because in said system, the selection of bypass signal contact is using random
Selection mode, 2 signalling contacts therefore, in embodiments thereof existed on the output loop for choosing same relay collect
Bypass signal contact is formed afterwards, it is therefore assumed that the relay breaks down, then can not close the output loop for changing relay, therefore
Above-mentioned 2 signalling contacts will not be grounded, therefore can not carry out bypass processing, and bypass system at this moment is insecure.Therefore, originally
Invention using the following line plan of establishment, i.e., is returned in order to avoid the appearance of above-mentioned situation using the output of any one relay
A signalling contact is chosen on road, then chooses a contact on the output loop of another relay, by this 2 signalling contacts
Collect to form bypass signal contact, after so setting, the purpose of increase bypass signal stability can be reached, even if a relay
Device failure, but due to there is the bypass signal contact that the signalling contact of 2 different relays is constituted, its bypass signal contact remains unchanged
In the state being pulled down, the state that its level is zero.
Based on above-mentioned preferred design principle, it is preferred that 4 relays of A channel relay group are respectively：Relay
K1, relay K2, relay K3, relay K4, the output end of relay K1 output loop possess signalling contact K1-1 and letter
Number contact K1-2, the output end of relay K2 output loop possesses signalling contact K2-1 and signalling contact K2-2, relay K3
The output end of output loop possess signalling contact K3-1 and signalling contact K3-2, the output end tool of relay K4 output loop
Standby signalling contact K4-1 and signalling contact K4-2, relay K4 output loop is connected on light warning signal system；Signal is touched
Point K1-1 and signalling contact K2-1 collect composition bypass signal contact A passage BP1, signalling contact K3-1 and signalling contact K2-2 and converged
Collection composition bypass signal contact A passage BP2, signalling contact K3-2 and signalling contact K1-2 collect composition bypass signal contact A and led to
Road BP3.
Based on above-mentioned preferred design principle, it is preferred that 4 relays of channel B relay group are respectively：Relay
K5, relay K6, relay K7, relay K8, the output end of relay K5 output loop possess signalling contact K5-1 and letter
Output end signal contact K6-1 and signalling contact K6-2 that number contact K5-2, relay K6 output loop possess, relay K7
The output end of output loop possess signalling contact K7-1 and signalling contact K7-2, the output end tool of relay K8 output loop
Standby signalling contact K8-1 and signalling contact K8-2, relay K8 output loop is connected on light warning signal system；Signal is touched
Point K5-1 and signalling contact K6-1 collect composition bypass signal contact channel B BP1, signalling contact K7-1 and signalling contact K6-2 and converged
Collection composition bypass signal contact channel B BP2, signalling contact K7-2 and signalling contact K5-2 collect composition bypass signal contact B and led to
Road BP3.
Based on above-mentioned preferred design principle, it is preferred that 4 relays of C-channel relay group are respectively：Relay
K9, relay K10, relay K11, relay K12, the output end of relay K9 output loop possess signalling contact K9-1 and
Signalling contact K9-2, relay K10 the output end road exported back possess signalling contact K10-1 and signalling contact K10-2, relay
The output end of device K11 output loop possesses signalling contact K11-1 and signalling contact K11-2, relay K12 output loop
Output end possesses signalling contact K12-1 and signalling contact K12-2, and relay K12 output loop is connected on light warning signal
System；Signalling contact K9-1 and signalling contact K10-1 collect 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.
It is preferred that, the safe logic assembly A, safe logic assembly B, safe logic assembly C meet logic including 2/3
Unit.
It is preferred that, the input circuit of each relay is parallel with diode, the input circuit and diode of relay
Control module is formed after parallel connection, the input of the control module and corresponding gear contact portion, the output end of the control module
Ground connection.
It is preferred that, 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
Diode VD15 is in series with, diode VD13, diode VD14, diode VD15 are simultaneously after series resistor R, light emitting diode H
Ground connection.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as using
The design principle of the present invention, and the change for carrying out non-creativeness work on this basis and making, all should belong to the present invention's
Within protection domain.
Claims (5)
1. reactor protection system two from three meets maintenance bypass system, it is characterised in that：
Including reactor protection system, reactor protection system is including the safety monitoring assembly A in A channel, positioned at channel B
Interior safety monitoring assembly B, the safety monitoring assembly C in C-channel, in addition to the safe logic assembly in A channel
A, the safe logic assembly B in channel B, the safe logic assembly C in C-channel, safety monitoring assembly A outputs have guarantor
Signal A1, protection signal A2, protection signal A3 are protected, safety monitoring assembly B outputs have protection signal B1, protection signal B2, protection
Signal B3, safety monitoring assembly C output have protection signal C1, protection signal C2, protection signal C3, and safe logic assembly A is received
Protection signal A1, protection signal B1, protection signal C1, safe logic assembly B receive protection signal A2, protection signal B2, protection
Signal C2, safe logic assembly C receive protection signal A3, protection signal B3, protection signal C3；
Meet logic bypass block including 2/3,2/3, which meets logic bypass block, includes the rotary switch with four gear contacts
S, rotary switch S have 0 grade of contact, 1 grade of contact, 2 grades of contacts, 3 grades of contacts, and rotary switch S action cutter-contact point series connection input is pressed
Button SP is connected to power supply, and rotary switch S 0 grade of contact is hanging；
2/3, which meets logic bypass block, also includes 12 relays, during 12 relays are normally opened relay, 12 relays
Every 4 inputs for the input circuit of one group, first group of 4 relays are all connected to 1 grade of contact, 4 of first group after
The output end of the input circuit of electrical equipment is all grounded, and the input of the input circuit of second group of 4 relays is all connected to 2 grades and touched
Point, the output end of the input circuit of second group of 4 relays is all grounded, the input circuit of the 3rd group of 4 relays it is defeated
Enter end and be all connected to 3 grades of contacts, the output end of the input circuit of the 3rd group of 4 relays is all grounded；
First group of 4 relays are A channel relay group, and second group of 4 relays are channel B relay group, the 3rd group
4 relays be C-channel relay group；
The output end of the output loop of each relay in A channel relay group all possesses 2 signalling contacts, and it is exported back
The input end grounding on road, A channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of A channel relay group,
There are 2 signalling contacts to collect composition bypass signal contact A passage BP1, separately there are 2 signalling contacts to collect composition bypass signal contact
A channel BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact A passage BP3, separately there are 2 signalling contacts to collect and go to
Light warning signal system, bypass signal contact A passage BP1 connects with protection signal A1, bypass signal contact A passage BP2 with
Protection signal A2 connects, and bypass signal contact A passage BP3 connects with protection signal A3；
The output end of the output loop of each relay in channel B relay group all possesses 2 signalling contacts, and it is exported back
The input end grounding on road, channel B relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of channel B relay group,
There are 2 signalling contacts to collect composition bypass signal contact channel B BP1, separately there are 2 signalling contacts to collect composition bypass signal contact
Channel B BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact channel B BP3, separately there are 2 signalling contacts to collect and go to
Light warning signal system, bypass signal contact channel B BP1 connects with protection signal B1, bypass signal contact channel B BP2 with
Protection signal B2 connects, and bypass signal contact channel B BP3 connects with protection signal B3；
The output end of the output loop of each relay in C-channel relay group all possesses 2 signalling contacts, and it is exported back
The input end grounding on road, C-channel relay group possesses 8 signalling contacts altogether, in 8 signalling contacts of C-channel relay group,
There are 2 signalling contacts to collect composition bypass signal contact C-channel BP1, separately there are 2 signalling contacts to collect composition bypass signal contact
C-channel BP2, it is another there are 2 signalling contacts to collect composition bypass signal contact C-channel BP3, separately there are 2 signalling contacts to collect and go to
Light warning signal system, bypass signal contact C-channel BP1 connects with protection signal C1, bypass signal contact C-channel BP2 with
Protection signal C2 connects, and bypass signal contact C-channel BP3 connects with protection signal C3；
4 relays of A channel relay group are respectively：Relay K1, relay K2, relay K3, relay K4, relay
The output end of K1 output loop possesses signalling contact K1-1 and signalling contact K1-2, the output end of relay K2 output loop
Possess signalling contact K2-1 and signalling contact K2-2, the output end of relay K3 output loop possesses signalling contact K3-1 and letter
Number contact K3-2, the output end of relay K4 output loop possesses signalling contact K4-1 and signalling contact K4-2, relay K4
Output loop be connected on light warning signal system；Signalling contact K1-1 and signalling contact K2-1 collect composition bypass signal and touched
Point A channel BP1, signalling contact K3-1 and signalling contact K2-2 collect composition bypass signal contact A passage BP2, signalling contact K3-
2 and signalling contact K1-2 collects composition bypass signal contact A passage BP3；
4 relays of channel B relay group are respectively：Relay K5, relay K6, relay K7, relay K8, relay
The output end of K5 output loop possesses signalling contact K5-1 and signalling contact K5-2, the output end of relay K6 output loop
Possess signalling contact K6-1 and signalling contact K6-2, the output end of relay K7 output loop possesses signalling contact K7-1 and letter
Number contact K7-2, the output end of relay K8 output loop possesses signalling contact K8-1 and signalling contact K8-2, relay K8
Output loop be connected on light warning signal system；Signalling contact K5-1 and signalling contact K6-1 collect composition bypass signal and touched
Point channel B BP1, signalling contact K7-1 and signalling contact K6-2 collect composition bypass signal contact channel B BP2, signalling contact K7-
2 and signalling contact K5-2 collects composition bypass signal contact channel B BP3.
2. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterised in that：C leads to
4 relays of road relay group are respectively：Relay K9, relay K10, relay K11, relay K12, relay K9's
The output end of output loop possesses signalling contact K9-1 and signalling contact K9-2, the output end tool of relay K10 output loop
Standby signalling contact K10-1 and signalling contact K10-2, the output end of relay K11 output loop possess signalling contact K11-1 and
Signalling contact K11-2, the output end of relay K12 output loop possesses signalling contact K12-1 and signalling contact K12-2, after
Electrical equipment K12 output loop is connected on light warning signal system；It is other that signalling contact K9-1 and signalling contact K10-1 collect composition
Messenger contact C-channel BP1, signalling contact K11-1 and signalling contact K10-2 collect composition bypass signal contact C-channel BP2,
Signalling contact K11-2 and signalling contact K9-2 collect composition bypass signal contact C-channel BP3.
3. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterised in that：It is described
Safe logic assembly A, safe logic assembly B, safe logic assembly C meet logic unit including 2/3.
4. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterised in that：It is each
The input circuit of individual relay forms control module after being all parallel with diode, the input circuit and diodes in parallel of relay,
The input of the control module and corresponding gear contact portion, the output head grounding of the control module.
5. reactor protection system two from three according to claim 1 meets maintenance bypass system, it is characterised in that：1 grade
Contact is also in series with diode VD13, and 2 grades of contacts are also in series with diode VD14, and 3 grades of contacts are also in series with diode VD15, two
Pole pipe VD13, diode VD14, diode VD15 after series resistor R, light emitting diode H while be grounded.
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| 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 |
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| CN102157208B (en) * | 2010-11-12 | 2013-03-27 | 中广核工程有限公司 | Nuclear power plant reactor protection system |
| CN104348133B (en) * | 2013-08-09 | 2017-07-18 | 中核核电运行管理有限公司 | Reactor protection system internal electric source interlocking controller |
| CN104361915B (en) * | 2014-09-24 | 2017-01-18 | 中国核动力研究设计院 | Constant value test system of reactor key process measurement parameters and test method |
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