Reactor protection system two-out-of-three conforming maintenance bypass system
A reactor protection and maintenance bypass technology, which is applied in the fields of reactors, nuclear reactor monitoring, nuclear power generation, etc., can solve problems such as reducing the operability of the reactor
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Embodiment 1
[0035] Such as Figure 1 to Figure 5 shown.
[0036] Two of the three reactor protection systems are in line with the maintenance bypass system,
[0037] Including the reactor protection system, the reactor protection system includes a safety monitoring device A located in channel A, a safety monitoring device B located in channel B, a safety monitoring device C located in channel C, and a safety logic device A located in channel A , Safety logic device B located in channel B, safety logic device C located in channel C, safety monitoring device A outputs protection signal A1, protection signal A2, protection signal A3, safety monitoring device B outputs protection signal B1, protection Signal B2, protection signal B3, safety monitoring device C outputs protection signal C1, protection signal C2, protection signal C3, safety logic device A receives protection signal A1, protection signal B1, protection signal C1, safety logic device B receives protection signal A2 , protectio...
Embodiment 2
[0050] Such as Figure 5 shown.
[0051] On the basis of Embodiment 1, preferably, since the selection of the bypass signal contact in the above system is random, there are two signal contacts on the output circuit of the same relay selected in the implementation. After the points are gathered, the bypass signal contact is formed. Therefore, if the relay fails, the output circuit of the relay cannot be closed, so the above two signal contacts will not be grounded, so bypass processing cannot be performed. At this time, the bypass system is unreliable. Therefore, in order to avoid the occurrence of the above-mentioned situation, the present invention adopts the following circuit setting scheme, that is, select a signal contact in the output circuit of any relay, and then select a contact in the output circuit of another relay, and connect the two signals The contacts are collected to form a bypass signal contact. After this setting, the purpose of increasing the stability of ...
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