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CN-115602347-B - Nuclear power plant fault self-diagnosis alarm device

CN115602347BCN 115602347 BCN115602347 BCN 115602347BCN-115602347-B

Abstract

The application provides a nuclear power plant fault self-diagnosis alarm device which comprises an analog input module, a switching value input module, a first switching value output module, a main control module and a fault reset switch. The fault reset switch is connected with the switching value input module, and the switching value input module, the analog value input module and the first switching value output module are all connected with the main control module. The analog input fault algorithm unit, the switching value output fault algorithm unit and the main control fault algorithm unit in the main control module are respectively connected with the first RS trigger, the second RS trigger, the third RS trigger and the fourth RS trigger, and the output end of each RS trigger is connected with the first switching value output module. According to the self-diagnosis alarm device for the faults of the nuclear power plant, which is provided by the application, the algorithm units of different modules are arranged in the main control module, so that the faults of different modules are automatically detected, and the faults are conveniently positioned and maintained.

Inventors

  • ZHENG WEIZHI
  • LIU CHUNMING
  • MAO XINMIN
  • YANG SHUANG
  • ZHAN XIANGGUO
  • WEI ZHICHAO
  • MENG QINGJUN
  • SUN HONGTAO

Assignees

  • 北京广利核系统工程有限公司

Dates

Publication Date
20260505
Application Date
20210708

Claims (8)

  1. 1. The self-diagnosis alarm device for the faults of the nuclear power plant is characterized by comprising an analog quantity input module (100), a switching value input module (200), a first switching value output module (300), a main control module (400) and a fault reset switch (500), The fault reset switch (500) is connected with the switching value input module (200); the switching value input module (200), the analog value input module (100) and the first switching value output module (300) are connected with the main control module (400); The main control module (400) comprises an analog input fault algorithm unit (410), a switching value input fault algorithm unit (420), a switching value output fault algorithm unit (430), a main control fault algorithm unit (440), a first RS trigger (450), a second RS trigger (460), a third RS trigger (470) and a fourth RS trigger (480), The analog input fault algorithm unit (410) is connected with the input end of the first RS trigger (450), and the output end of the first RS trigger (450) is connected with the first switching value output module (300); The switching value input fault algorithm unit (420) is connected with the input end of the second RS trigger (460), and the output end of the second RS trigger (460) is connected with the first switching value output module (300); The switching value output fault algorithm unit (430) is connected with the input end of the third RS trigger (470), and the output end of the third RS trigger (470) is connected with the first switching value output module (300); The main control fault algorithm unit (440) is connected with the input end of the fourth RS trigger (480), and the output end of the fourth RS trigger (480) is connected with the first switching value output module (300); the device further comprises a second switching value output module (600), wherein the second switching value output module (600) is connected with the main control module (400); The master control module (400) further comprises an OR gate (490), wherein the output end of the first RS trigger (450), the output end of the second RS trigger (460), the output end of the third RS trigger (470) and the output end of the fourth RS trigger (480) are connected with the input end of the OR gate (490), and the output end of the OR gate (490) is connected with the second switching value output module (600).
  2. 2. The nuclear power plant fault self-diagnosis alarm device according to claim 1, wherein the switching value input module (200), the analog value input module (100) and the first switching value output module (300) are all connected with the main control module (400) through an IO bus.
  3. 3. The nuclear power plant fault self-diagnosis alarm apparatus according to claim 1, wherein the first switching value output module (300) includes an analog input fault indication lamp (310), a switching value input fault indication lamp (320), and a main control fault indication lamp (330), The analog input fault indicator lamp (310) is connected with the output end of the first RS trigger (450), the switching value input fault indicator lamp (320) is connected with the output end of the second RS trigger (460), and the main control fault indicator lamp (330) is connected with the output end of the fourth RS trigger (480).
  4. 4. The nuclear power plant fault self-diagnosis alarm device according to claim 1, wherein the second switching value output module (600) is connected with the main control module (400) through an IO bus.
  5. 5. The nuclear power plant fault self-diagnosis alarm device according to claim 1, wherein the second switching value output module (600) is provided in a main control room.
  6. 6. The nuclear power plant fault self-diagnosis alarm apparatus according to claim 1, wherein the second switching value output module (600) includes a first switching value output fault indication lamp (610).
  7. 7. A nuclear power plant fault self-diagnostic alarm apparatus as claimed in claim 3, wherein said first switching value output module (300) further comprises a second switching value output fault indicator lamp (340).
  8. 8. The nuclear power plant fault self-diagnosis alarm apparatus according to claim 7, wherein the second switching value output fault indication lamp (340) is connected to an output terminal of the third RS flip-flop (470).

Description

Nuclear power plant fault self-diagnosis alarm device Technical Field The application relates to the field of nuclear power plant fault overhaul, in particular to a self-diagnosis alarm device for a nuclear power plant fault. Background The control device applied to the nuclear power plant at present adopts an analog technology control device or a digital control device, wherein the analog technology control device has no self-diagnosis function and can only detect through a periodic test, the digital control device has the self-diagnosis function, but needs to be connected to a server through network communication to record and alarm, the fault rate of the server is very high, and the network safety cannot be ensured by applying the network communication. Patent CN112489389a discloses a nuclear power station alarm system, which comprises a diversified driving system control station, a digital protection system control station and a security level monitoring device, wherein the digital protection system control station and the security level monitoring device are respectively connected with the diversified driving system control station, and the diversified driving system control station is used for judging that the protection function of the digital protection system control station fails and/or sending out an alarm signal when receiving a fault signal sent by the security level monitoring device. The safety monitoring device comprises a self-diagnosis unit which is used for monitoring self faults and sending out fault signals. Although patent CN112489389a discloses an alarm system including a self-diagnostic unit, the alarm system cannot locate the location of the fault. Patent CN103700414a discloses a diversity driving system and method for a nuclear power plant, the diversity driving system for a nuclear power plant comprises a diversity driving cabinet, and the diversity driving cabinet comprises a judging module and an interface module. The interface module comprises an RPN interface, an RPC interface and the like, the judging module judges whether a first automatic driving signal is generated according to the neutron fluence rate signal, the first state signal and the second state signal, and when the first automatic driving signal is generated, the first automatic driving signal is transmitted to the shutdown coil through the first hard-wired interface to control the automatic shutdown of the reactor of the nuclear power station, and the judging module judges whether a second automatic driving signal is generated according to the neutron fluence rate signal, the first state signal and the third state signal, and when the second automatic driving signal is generated, the second automatic driving signal drives the steam turbine to trip through the second hard-wired interface. Patent CN103700414a discloses a nuclear power plant fault detection system, wherein a judging module decides whether to generate a driving signal according to a plurality of signals, and does not involve self-diagnosis of signals of different modules, and thus cannot judge a fault source. Disclosure of Invention The object of the present application is to solve at least to some extent one of the above-mentioned technical problems. Therefore, a first object of the present application is to provide a self-diagnosis alarm device for faults in a nuclear power plant, which is convenient for locating and maintaining faults, avoids transmission of alarm signals by adopting a network communication mode, and ensures network security. In order to achieve the above object, an embodiment of a first aspect of the present application provides a fault self-diagnosis alarm device for a nuclear power plant, which includes an analog input module, a switching value input module, a first switching value output module, a main control module and a fault reset switch, The fault reset switch is connected with the switching value input module; the switching value input module, the analog value input module and the first switching value output module are all connected with the main control module; The main control module comprises an analog input fault algorithm unit, a switching value output fault algorithm unit, a main control fault algorithm unit, a first RS trigger, a second RS trigger, a third RS trigger and a fourth RS trigger, The analog input fault algorithm unit is connected with the input end of the first RS trigger, and the output end of the first RS trigger is connected with the first switching value output module; the switching value input fault algorithm unit is connected with the input end of the second RS trigger, and the output end of the second RS trigger is connected with the first switching value output module; The switching value output fault algorithm unit is connected with the input end of the third RS trigger, and the output end of the third RS trigger is connected with the first switching value output module; The master control fa