CN113436763A - Testing device and method for function verification of high-temperature gas cooled reactor emergency shutdown system - Google Patents
Testing device and method for function verification of high-temperature gas cooled reactor emergency shutdown system Download PDFInfo
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- CN113436763A CN113436763A CN202110722454.XA CN202110722454A CN113436763A CN 113436763 A CN113436763 A CN 113436763A CN 202110722454 A CN202110722454 A CN 202110722454A CN 113436763 A CN113436763 A CN 113436763A
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- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A test device and a method for function verification of a high-temperature gas cooled reactor emergency shutdown system comprise a reactor, wherein a control rod is arranged in the reactor and is communicated with a stepping motor; the primary side of the steam generator is communicated with an electric valve at the inlet of the main helium fan, the electric valve at the inlet of the main helium fan is communicated with the main helium fan, and the electric valve at the outlet of the main helium fan is communicated with the main helium fan. The water supply pump is communicated with the main water supply isolation valve, and the main water supply isolation valve is divided into two paths: one path is communicated with the secondary side of the steam generator, the other path is communicated with a discharge valve, and the discharge valve is communicated with a discharge tank. The secondary side of the steam generator is communicated with a main steam isolation valve, and the main steam isolation valve is communicated with a main steam discharge system. And the in-reactor shutdown monitoring device and each valve of the emergency shutdown system are respectively connected with the simulation modeling server through a DCS cabinet of the emergency shutdown system and a PXI data acquisition cabinet. The invention can realize the advanced verification of the actual function of the scram system and improve the testing efficiency.
Description
Technical Field
The invention belongs to the technical field of high-temperature gas-cooled reactor shutdown and start systems, and particularly relates to a testing device and method for function verification of a high-temperature gas-cooled reactor emergency shutdown system.
Background
The emergency shutdown system is an important component of a pebble-bed modular high-temperature gas cooled reactor nuclear power station, is used for safely shutting down a reactor in the emergency shutdown process of a unit, and simultaneously takes away heat generated by the reactor and ensures the cooling requirements of a steam generator and the reactor.
The high temperature gas cooled reactor emergency shutdown system consists of a control rod, a reactor, a helium circulator, a steam generator, a feed pump, a pipeline and a valve. In order to ensure the safe and stable operation of the high-temperature gas cooled reactor, the method is of great importance for the functional verification of the control logic of the scram system. Because the system only acts under the unit scram working condition, the test is carried out in a mode of simulating the operation working condition during the debugging of the single system so as to ensure the availability and the functional integrity of equipment.
In a traditional test process, a tester usually performs logic modification on a Digital Control System (DCS) of a nuclear power station, and tests a system control cabinet in a mode of manually wiring and manually forcing signals to manually read a DCS display state. This test method has at least the following problems: under the conditions that the operation condition of the reactor starting and stopping system is complex and the number of measured values is large, the manual testing mode has the defects of reading errors and more errors of the testing result, and the testing efficiency is low; meanwhile, DCS logic needs to be modified in the testing process to simulate various operation states of the system, the start-stop system relates to the whole process operation condition of the unit start, stop and power operation stages, the related DCS logic range is wide, the direct modification of the DCS logic in the testing process brings hidden dangers to the subsequent stable operation of the unit, and the applicability of the testing mode is poor.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a testing device and a method for function verification of a high-temperature gas-cooled reactor emergency shutdown system, wherein the testing device can realize the advanced verification of the actual function of the reactor starting and stopping system and improve the testing efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a testing device for functional verification of a high-temperature gas cooled reactor emergency shutdown system comprises a reactor 1 and a steam generator 4; a control rod 2 is arranged in the reactor 1, the control rod 2 is communicated with a stepping motor 3, and the stepping motor 3 is used for driving the control rod 2 to be downwards inserted to a shutdown depth;
the primary side of the steam generator 4 is communicated with the inlet of an electric valve 5 at the inlet of the main helium fan, the outlet of the electric valve 5 at the inlet of the main helium fan is communicated with the inlet of a main helium fan 6, the outlet of the main helium fan 6 is communicated with the inlet of an electric valve 7 at the outlet of the main helium fan, and the electric valve 5 at the inlet of the main helium fan and the electric valve 7 at the outlet of the main helium fan are used for controlling the opening and closing of the inlet and outlet pipelines of the main helium fan 6;
the inlet of the reactor 1 is connected with the outlet end of a steam generator 4, and the inlet end of the steam generator 4 is connected with the outlet end of a main water supply isolation valve 9;
the inlet of the main water supply isolation valve 9 is communicated with the outlet of the water supply pump 8, the water supply pump 8 is used for controlling the water supply pressure of the system, and the main water supply isolation valve 9 is used for controlling the opening and closing of a pipeline between the water supply pump 8 and the steam generator 4; the outlet of the main water supply isolation valve 9 is divided into two paths: one path is communicated with the inlet of the secondary side of the steam generator 4, the other path is communicated with the inlet of a discharge valve 10, the outlet of the discharge valve 10 is communicated with a discharge tank 11, the outlet of the secondary side of the steam generator 4 is communicated with the inlet of a main steam isolation valve 12, the outlet of the main steam isolation valve 12 is communicated with the inlet of a main steam discharge system 13, and the main steam isolation valve 12 is used for controlling the opening and closing of a main steam discharge pipeline;
the system comprises a stepping motor 3, a main helium fan inlet electric valve 5, a main helium fan outlet electric valve 7, a main water supply isolation valve 9, a main steam isolation valve 12, a discharge valve 10 and a shutdown monitoring device 14, wherein the main helium fan outlet electric valve 7, the main water supply isolation valve 9, the main steam isolation valve 12, the discharge valve 10 and the shutdown monitoring device 14 are respectively connected with a simulation modeling server 17 through a PXI data acquisition cabinet 15 through a DCS cabinet of an emergency shutdown system, the shutdown monitoring device 14 is used for monitoring operation information of each part and transmitting the information to the simulation modeling server 17, the simulation modeling server 17 transmits the information to the DCS cabinet of the emergency shutdown system 15 through the PXI data acquisition cabinet 16, and the DCS cabinet of the emergency shutdown system 15 is used for controlling starting and stopping of each part.
The reactor 1 is internally provided with a reactor shutdown monitoring device 14, and the reactor shutdown monitoring device 14 is used for monitoring an emergency shutdown signal and transmitting the emergency shutdown signal to the simulation modeling server 17 to simulate the emergency shutdown of the reactor.
The DCS cabinet 15 of the emergency shutdown system comprises a DCS cabinet body, and a stepping motor driving clamping piece 15-1, a main helium fan inlet electric valve driving clamping piece 15-2, a main helium fan driving clamping piece 15-3, a main helium fan outlet electric valve driving clamping piece 15-4, a main steam isolating valve driving clamping piece 15-5, a main water supply isolating valve driving clamping piece 15-6, a main water supply pump driving clamping piece 15-7, a discharge valve driving clamping piece 15-8 and a shutdown monitoring device measuring clamping piece 15-9 which are arranged in the DCS cabinet body;
the device comprises a stepping motor driving clamping piece 15-1, a main helium fan inlet electric valve driving clamping piece 15-2, a main helium fan inlet electric valve 5, a main helium fan driving clamping piece 15-3, a main helium fan 6, a main helium fan outlet electric valve driving clamping piece 15-4, a main helium fan outlet electric valve 7, a main steam isolation valve driving clamping piece 15-5, a main water supply isolation valve driving clamping piece 15-6, a main water supply isolation valve 9, a water supply pump driving clamping piece 15-7, a water supply pump 8, a discharge valve driving clamping piece 15-8, a discharge valve 10 and a shutdown monitoring device measuring clamping piece 15-9, wherein the stepping motor driving clamping piece 15-1 is connected with the stepping motor 3, the main helium fan outlet electric valve driving clamping piece 15-2 is connected with the main helium fan outlet electric valve 7, the main steam isolation valve driving clamping piece 15-5 is connected with the main steam isolation valve 12, the main water supply isolation valve driving clamping piece 15-6 is connected with the main water supply isolation valve 9, the water supply pump driving clamping piece 15-7 is connected with the shutdown monitoring device 14.
The PXI data acquisition cabinet 16 comprises a data acquisition cabinet body and a stepping motor driving A/D conversion clamping piece 16-1, a main helium fan inlet electric valve A/D conversion clamping piece 16-2, a main helium fan A/D conversion clamping piece 16-3, a main helium fan outlet electric valve A/D conversion clamping piece 16-4, a main steam isolating valve A/D conversion clamping piece 16-5, a main water supply isolating valve A/D conversion clamping piece 16-6, a water feeding pump A/D conversion clamping piece 16-7, a discharge valve A/D conversion clamping piece 16-8 and a shutdown monitoring device measurement A/D conversion clamping piece 16-9 which are arranged in the data acquisition cabinet body.
The simulation modeling server 17 comprises a stepping motor simulation module 17-1, a main helium fan inlet electric valve simulation module 17-2, a main helium fan simulation module 17-3, a main helium fan outlet electric valve simulation module 17-4, a main steam isolation valve simulation module 17-5, a main water supply isolation valve simulation module 17-6, a water supply pump simulation module 17-7, a discharge valve simulation module 17-8 and a shutdown monitoring device measurement simulation module 17-9;
wherein, the step motor simulation module 17-1 is connected with the step motor driving card 15-1 through the step motor driving A/D conversion card 16-1; the simulation module 17-2 of the electric valve at the inlet of the main helium fan is connected with the driving clamping piece 15-2 of the electric valve at the inlet of the main helium fan through the A/D conversion clamping piece 16-2 of the electric valve at the inlet of the main helium fan; the main helium fan simulation module 17-3 is connected with a main helium fan driving clamping piece 15-3 through a main helium fan A/D conversion clamping piece 16-3; the simulation module 17-4 of the electric valve at the outlet of the main helium fan is connected with the driving clamping piece 15-4 of the electric valve at the outlet of the main helium fan through the A/D conversion clamping piece 16-34 of the electric valve at the outlet of the main helium fan; the main steam isolation valve simulation module 17-5 is connected with a main steam isolation valve driving clamp 15-5 through a main steam isolation valve A/D conversion clamp 16-5; the main water supply isolation valve simulation module 17-6 is connected with a main water supply isolation valve driving clamping piece 15-6 through a main water supply isolation valve A/D conversion clamping piece 16-6; the feed pump simulation module 17-7 is connected with a feed pump driving clamping piece 15-7 through a feed pump A/D conversion clamping piece 16-7; the discharge valve simulation module 17-8 is connected with a discharge valve driving clamping piece 15-8 through a discharge valve A/D conversion clamping piece 16-8; the pile-stopping monitoring device measurement simulation module 17-9 is connected with the pile-stopping monitoring device measurement clamping piece 15-9 through the pile-stopping monitoring device measurement A/D conversion clamping piece 16-9.
A use method of a testing device for functional verification of a high-temperature gas cooled reactor emergency shutdown system comprises the following steps: (1) triggering and verifying emergency shutdown; (2) and (4) verifying the safety function under the reactor accident condition.
In the test process, the controller parameters in the simulation modeling server 17 are adjusted repeatedly until the response time of the electric valve 5 at the inlet of the main helium fan, the electric valve 7 at the outlet of the main helium fan, the main water supply isolation valve 9 and the main steam isolation valve 12 meets the design function, the full opening time of the discharge valve 10 meets the design function, and the running characteristics of the stepping motor 3, the main helium fan 6 and the water supply pump 8 meet the design function.
The specific operation steps of the emergency shutdown trigger verification are as follows:
the shutdown monitoring device 14 monitors a scram signal and transmits the scram signal to the simulation modeling server 17 to simulate the reactor scram:
the step motor simulation module 17-1 transmits the signals to the step motor driving card 15-1 through the step motor A/D conversion card 16-1 and drives the step motor 3 to act, and the start time of the step motor 3 is tested; the stepping motor 3 drives the control rod 2 to be rapidly inserted downwards to the shutdown depth, and the control rod action response time and the measuring stroke in the emergency shutdown process are tested.
The safety function verification under the reactor accident condition comprises the following specific operation steps:
initial state: the main helium fan 6 normally operates, the electric valve 5 at the inlet of the main helium fan and the electric valve 7 at the outlet of the main helium fan are opened, the water supply pump 8 normally operates, and the main water supply isolation valve 9 and the main steam isolation valve 12 are opened;
1) when a shutdown monitoring device 14 monitors that a pipe breakage accident occurs in a steam generator 4, an accident shutdown signal is triggered and transmitted to a simulation modeling server 17, a primary helium fan simulation module 17-3 receives the accident shutdown signal, the accident shutdown signal is transmitted to a primary helium fan driving clamping piece 15-3 through a primary helium fan A/D conversion clamping piece 16-3 and drives a primary helium fan 6 to stop running, and a shutdown characteristic curve of the primary helium fan 6 is monitored; the A/D conversion clamping piece 16-2 of the electric valve at the inlet of the main helium fan is transmitted to the driving clamping piece 15-2 of the electric valve at the inlet of the main helium fan and drives the electric valve 5 at the inlet of the main helium fan to be closed, and the closing time of the electric valve 5 at the inlet of the main helium fan is tested; the A/D conversion clamping piece 16-4 of the electric valve at the outlet of the main helium fan is transmitted to the driving clamping piece 15-4 of the electric valve at the outlet of the main helium fan and drives the electric valve 7 at the outlet of the main helium fan to be closed, and the closing time of the electric valve 7 at the outlet of the main helium fan is tested;
2) the water feeding pump A/D conversion card 16-7 is transmitted to a water feeding pump driving card 15-7 and drives a water feeding pump 8 to stop running, and a stop characteristic curve of the water feeding pump 8 is monitored; the A/D conversion clamping piece 16-6 of the main water supply isolation valve is transmitted to a driving clamping piece 15-6 of the main water supply isolation valve and drives the main water supply isolation valve 9 to be quickly closed, and the closing time of the main water supply isolation valve 9 is verified to meet the design specification; the A/D conversion clamping piece 16-5 of the main steam isolation valve is transmitted to a main steam isolation valve driving clamping piece 15-5 and drives the main steam isolation valve 12 to be quickly opened, steam in the steam generator 4 is quickly discharged to a main steam discharge system 13, and the opening time of the main steam isolation valve 12 is verified to meet the design specification;
3) the discharge valve simulation module 17-8 receives an accident shutdown signal, transmits the accident shutdown signal to the discharge valve driving clamping piece 15-8 by the discharge valve A/D conversion clamping piece 16-8 and drives the discharge valve 10 to be rapidly opened, rapidly discharges the feed water in the steam generator 4 to the discharge tank 11, and verifies that the opening time of the discharge valve 10 meets the design specification;
4) after the main feed water isolation valve 9 is fully closed and the drain valve 10 is fully opened, the main steam isolation valve 12 is closed with a delay of 10 s.
The invention has the beneficial effects that:
the testing device and the method realize logic rehearsal and dynamic testing of the scram system, expose and correct the problems of the logic configuration of the scram system in advance, and greatly improve the safety and reliability of the scram system during the scram of the unit. In actual operation, the control idea of the high-temperature gas cooled reactor emergency shutdown system can be configured, debugged, tested, verified and optimized, real-time communication can be carried out with the DCS, the verified mature control configuration is synchronized into the DCS, and the problem that the design function of the DCS is not verified by repeatedly modifying the configuration logic is solved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein 1 is a reactor, 2 is a control rod, 3 is a stepping motor, 4 is a steam generator, 5 is a main helium fan inlet electric valve, 6 is a main helium fan, 7 is a main helium fan outlet electric valve, 8 is a water feeding pump, 9 is a main water feeding isolation valve, 10 is a discharge valve, 11 is a discharge tank, 12 is a main steam isolation valve, 13 is a main steam discharge system, 14 is a shutdown monitoring device, 15 is an emergency shutdown system DCS cabinet, 15-1 is a stepping motor driving clamping piece, 15-2 is a main helium fan inlet electric valve driving clamping piece, 15-3 is a main helium fan driving clamping piece, 15-4 is a main helium fan outlet driving clamping piece, 15-5 is a main steam isolation valve driving clamping piece, 15-6 is a main water feeding isolation valve driving clamping piece, 15-7 is a water feeding pump driving clamping piece, 15-8 is a discharge valve driving clamping piece, a control valve is arranged on the reactor, 2 is a control rod, 3 is a stepping motor, 4 is a steam generator, 5 is a main helium fan inlet electric valve, 10 is a discharge valve, 14 is a discharge tank, 12 is a main steam isolation valve, a main helium separator is a helium tank, a helium tank is arranged on the helium tank, a helium tank is arranged in the helium tank, a helium tank, 15-9 are measuring clamping pieces of the shutdown monitoring device. 16 is a PXI data acquisition cabinet, 16-1 is a stepping motor driving A/D conversion clamping piece, 16-2 is a main helium fan inlet electric valve A/D conversion clamping piece, 16-3 is a main helium fan A/D conversion clamping piece, 16-4 is a main helium fan outlet electric valve A/D conversion clamping piece, 16-5 is a main steam isolating valve A/D conversion clamping piece, 16-6 is a main water supply isolating valve A/D conversion clamping piece, 16-7 is a water supply pump A/D conversion clamping piece, 16-8 is a discharge valve A/D conversion clamping piece, and 16-9 is a shutdown monitoring device measurement A/D conversion clamping piece. 17 is a simulation modeling server, 17-1 is a stepping motor simulation module, 17-2 is a helium circulator inlet electric valve simulation module, 17-3 is a helium circulator simulation module, 17-4 is a helium circulator outlet electric valve simulation module, 17-5 is a main steam isolation valve simulation module, 17-6 is a main water supply isolation valve simulation module, 17-7 is a water supply pump simulation module, 17-8 is a discharge valve simulation module, and 17-9 is a shutdown monitoring device measurement simulation module.
Detailed Description
The present invention will be described in further detail with reference to examples.
Referring to fig. 1:
the first embodiment is as follows:
taking a 200MW high-temperature gas cooled reactor unit as an example, a scheme that two sets of nuclear steam supply systems are connected with a steam turbine to form a set of nuclear power unit is formed. The thermal power of each nuclear steam supply system is 250MW, the total thermal power is 500MW, and the electric power is 211 MW. Helium is adopted as a coolant in the primary loop of the reactor, the operating pressure is 7MPa, and the pressure of a water supply system of the secondary loop of the reactor is 13.90MPa of a rated parameter in the whole operating process. The control rod is used as a first reactor shutdown system to complete the startup, power conversion, stable operation, power regulation, normal and accident thermal shutdown of the reactor, and the stroke of the control rod is nearly 9 m. Each control rod is provided with a set of driving mechanism, the time required by the stepping motor from a static (maintaining) state to a normal working rotating speed is not more than 200ms, and the time required by the stepping motor from the normal working rotating speed to the static (maintaining) state is not more than 100 ms.
The specific working process of the invention is as follows:
(1) triggering and verifying emergency shutdown:
the shutdown monitoring device 14 monitors an emergency shutdown signal, and transmits the emergency shutdown signal to the simulation modeling server 17 to simulate the emergency shutdown of the reactor, and the specific process is as follows:
the step motor simulation module 17-1 transmits the signals to the step motor driving card 15-1 through the step motor A/D conversion card 16-1 and drives the step motor 3 to act, and the starting time (less than or equal to 200ms) of the step motor 3 is tested; the stepping motor 3 drives the control rod 2 to be rapidly inserted downwards to the shutdown depth, the control rod action response time (approximately equal to 1m/s) in the emergency shutdown process is tested, and the stroke (approximately equal to 9m) is measured.
(2) Safety function verification under the reactor accident condition:
initial state: the main helium fan 6 operates normally, the electric valve 5 at the inlet of the main helium fan and the electric valve 7 at the outlet of the main helium fan are opened, the water supply pump 8 operates normally, and the main water supply isolation valve 9 and the main steam isolation valve 12 are opened.
1) When a shutdown monitoring device 14 monitors that a pipe breakage accident occurs in a steam generator 4, an accident shutdown signal is triggered and transmitted to a simulation modeling server 17, a primary helium fan simulation module 17-3 receives the accident shutdown signal, the accident shutdown signal is transmitted to a primary helium fan driving clamping piece 15-3 through a primary helium fan A/D conversion clamping piece 16-3 and drives a primary helium fan 6 to stop running, and a shutdown characteristic curve of the primary helium fan 6 is monitored; the A/D conversion clamping piece 16-2 of the electric valve at the inlet of the main helium fan is transmitted to the driving clamping piece 15-2 of the electric valve at the inlet of the main helium fan and drives the electric valve 5 at the inlet of the main helium fan to be closed, and the closing time of the electric valve 5 at the inlet of the main helium fan is tested; the A/D conversion clamping piece 16-4 of the electric valve at the outlet of the main helium fan is transmitted to the driving clamping piece 15-4 of the electric valve at the outlet of the main helium fan and drives the electric valve 7 at the outlet of the main helium fan to be closed, and the closing time of the electric valve 7 at the outlet of the main helium fan is tested;
2) the water feeding pump A/D conversion card 16-7 is transmitted to a water feeding pump driving card 15-7 and drives a water feeding pump 8 to stop running, and a stop characteristic curve of the water feeding pump 8 is monitored; the A/D conversion clamping piece 16-6 of the main water supply isolation valve is transmitted to a driving clamping piece 15-6 of the main water supply isolation valve and drives the main water supply isolation valve 9 to be quickly closed, and the closing time (less than or equal to 3s) of the main water supply isolation valve 9 is verified; the steam is transmitted to a main steam isolating valve driving clamping piece 15-5 by a main steam isolating valve A/D conversion clamping piece 16-5 and drives a main steam isolating valve 12 to be quickly opened, the steam in the steam generator 4 is quickly discharged to a main steam discharging system 13, and the opening time (less than or equal to 3s) of the main steam isolating valve 12 is verified;
3) the discharge valve simulation module 17-8 receives an accident shutdown signal, transmits the accident shutdown signal to the discharge valve driving clamp 15-8 by the discharge valve A/D conversion clamp 16-8 and drives the discharge valve 10 to be rapidly opened, rapidly discharges the feed water in the steam generator 4 to the discharge tank 11, and verifies the opening time (less than or equal to 3s) of the discharge valve 10;
4) after the main feed water isolation valve 9 is fully closed and the drain valve 10 is fully opened, the main steam isolation valve 12 is closed with a delay of 10 s.
In the above test process, the controller parameters in the simulation modeling server 17 are adjusted repeatedly until the response time of the electric valve 5 at the inlet of the main helium fan, the electric valve 7 at the outlet of the main helium fan, the main water supply isolation valve 9 and the main steam isolation valve 12 meets the design function, the full opening time of the discharge valve 10 meets the design function, and the running characteristics of the stepping motor 3, the main helium fan 6 and the water supply pump 8 meet the design function.
Claims (6)
1. A testing device for functional verification of a high-temperature gas cooled reactor emergency shutdown system comprises a reactor (1) and a steam generator (4), wherein a control rod (2) is arranged in the reactor (1), and a stepping motor (3) is connected with the control rod (2) to control the control rod to be inserted downwards to a shutdown depth;
the device is characterized in that the primary side of a steam generator (4) is communicated with the inlet of an electric valve (5) at the inlet of a main helium fan, the outlet of the electric valve (5) at the inlet of the main helium fan is communicated with the inlet of a main helium fan (6), the outlet of the main helium fan (6) is communicated with the inlet of an electric valve (7) at the outlet of the main helium fan, and the electric valve (5) at the inlet of the main helium fan and the electric valve (7) at the outlet of the main helium fan are used for controlling the opening and closing of the inlet and outlet pipelines of the main helium fan (6);
the inlet of the reactor (1) is connected with the outlet end of the steam generator (4), and the inlet end of the steam generator (4) is connected with the outlet end of the main water supply isolation valve (9);
the inlet of the main water supply isolation valve (9) is communicated with the outlet of the water supply pump (8), the water supply pump (8) is used for controlling the water supply pressure of the system, and the main water supply isolation valve (9) is used for controlling the opening and closing of a pipeline between the water supply pump (8) and the steam generator (4); the outlet of the main water supply isolation valve (9) is divided into two paths: one path is communicated with a secondary side inlet of the steam generator (4), the other path is communicated with an inlet of a discharge valve (10), an outlet of the discharge valve (10) is communicated with a discharge tank (11), an outlet of the secondary side of the steam generator (4) is communicated with an inlet of a main steam isolation valve (12), an outlet of the main steam isolation valve (12) is communicated with an inlet of a main steam discharge system (13), and the main steam isolation valve (12) is used for controlling the opening and closing of a main steam discharge pipeline;
the intelligent control system is characterized in that the stepping motor (3), the electric valve (5) at the inlet of the main helium fan, the electric valve (7) at the outlet of the main helium fan, the main water supply isolation valve (9), the main steam isolation valve (12), the discharge valve (10) and the shutdown monitoring device (14) are respectively connected with the simulation modeling server (17) through the DCS cabinet (15) of the emergency shutdown system through the PXI data acquisition cabinet (16), the shutdown monitoring device (14) is used for monitoring the operation information of each part and transmitting the information to the simulation modeling server (17), the simulation modeling server (17) transmits the information to the DCS cabinet (15) of the emergency shutdown system through the PXI data acquisition cabinet (16), and the DCS cabinet (15) of the emergency shutdown system is used for controlling the start and stop of each part.
2. The testing device for the functional verification of the scram system of the high temperature gas cooled reactor according to claim 1, wherein a scram monitoring device 14 is arranged inside the reactor 1, and the scram monitoring device (14) is used for monitoring a scram signal and transmitting the scram signal to the simulation modeling server (17) to simulate the scram of the reactor.
3. The testing device for the functional verification of the high-temperature gas cooled reactor emergency shutdown system according to claim 1, wherein the emergency shutdown system DCS cabinet (15) comprises a DCS cabinet body, and a stepping motor driving clamping piece (15-1), a main helium fan inlet electric valve driving clamping piece (15-2), a main helium fan driving clamping piece (15-3), a main helium fan outlet electric valve driving clamping piece (15-4), a main steam isolating valve driving clamping piece (15-5), a main water supply isolating valve driving clamping piece (15-6), a main water supply pump driving clamping piece (15-7), a discharge valve driving clamping piece (15-8) and a shutdown monitoring device measuring clamping piece (15-9) which are arranged in the DCS cabinet body;
the device comprises a stepping motor driving clamping piece (15-1), a main helium fan inlet electric valve driving clamping piece (15-2), a main helium fan inlet electric valve (5), a main helium fan driving clamping piece (15-3), a main helium fan (6), a main helium fan outlet electric valve driving clamping piece (15-4), a main helium fan outlet electric valve (7), a main steam isolating valve driving clamping piece (15-5) and a main steam isolating valve (12), a main water supply isolating valve driving clamping piece (15-6) and a main water supply isolating valve (9) are connected, a water supply pump driving clamping piece (15-7) is connected with a water supply pump (8), a discharge valve driving clamping piece (15-8) is connected with a discharge valve (10), and a reactor monitoring device measures the clamping piece (15-9) and is connected with a reactor stopping monitoring device (14).
4. The testing device for the functional verification of the high-temperature gas cooled reactor emergency shutdown system according to claim 3, wherein the PXI data acquisition cabinet (16) comprises a data acquisition cabinet body, and a stepping motor driving A/D conversion clamping piece (16-1), a main helium fan inlet electric valve A/D conversion clamping piece (16-2), a main helium fan outlet electric valve A/D conversion clamping piece (16-3), a main steam isolating valve A/D conversion clamping piece (16-4), a main water supply isolating valve A/D conversion clamping piece (16-5), a discharge valve A/D conversion clamping piece (16-6), and a shutdown monitoring device measuring A/D conversion clamping piece (16-7);
the simulation modeling server (17) comprises a stepping motor simulation module (17-1), a main helium fan inlet electric valve simulation module (17-2), a main helium fan outlet electric valve simulation module (17-3), a main steam isolation valve simulation module (17-4), a main water supply isolation valve simulation module (17-5), a discharge valve simulation module (17-6) and a shutdown monitoring device measurement simulation module (17-7);
wherein, the stepping motor simulation module (17-1) is connected with the stepping motor driving clamping piece (15-1) through the stepping motor driving A/D conversion clamping piece (16-1); the simulation module (17-2) of the electric valve at the inlet of the main helium fan is connected with the driving clamping piece (15-2) of the electric valve at the inlet of the main helium fan through an A/D (analog/digital) conversion clamping piece (16-2) of the electric valve at the inlet of the main helium fan; the simulation module (17-3) of the electric valve at the outlet of the main helium fan is connected with the driving clamping piece (15-3) of the electric valve at the outlet of the main helium fan through the A/D conversion clamping piece (16-3) of the electric valve at the outlet of the main helium fan; the main steam isolation valve simulation module (17-4) is connected with a main steam isolation valve driving clamping piece (15-4) through a main steam isolation valve A/D conversion clamping piece (16-4); the main water supply isolation valve simulation module (17-5) is connected with a main water supply isolation valve driving clamping piece (15-5) through a main water supply isolation valve A/D conversion clamping piece (16-5); the discharge valve simulation module (17-6) is connected with a discharge valve driving clamping piece (15-6) through a discharge valve A/D conversion clamping piece (16-6); the pile-stopping monitoring device measurement simulation module (17-7) is connected with the pile-stopping monitoring device measurement clamping piece (15-7) through the pile-stopping monitoring device measurement A/D conversion clamping piece (16-7).
5. The use method of the test device for the functional verification of the high temperature gas cooled reactor emergency shutdown system based on any one of claims 1 to 4 is characterized by comprising the following steps;
(1) triggering and verifying emergency shutdown:
(2) safety function verification under the reactor accident condition:
in the test process, the parameters of the controller in the simulation modeling server (17) are adjusted repeatedly until the response time of the electric valve (5) at the inlet of the main helium fan, the electric valve (7) at the outlet of the main helium fan, the main water supply isolation valve (9) and the main steam isolation valve (12) meets the design function, the full opening time of the discharge valve (10) meets the design function, and the running characteristics of the stepping motor (3), the main helium fan (6) and the water supply pump (8) meet the design function.
6. The use method of the testing device for the functional verification of the scram system of the high temperature gas cooled reactor according to claim 5,
the specific operation steps of the emergency shutdown trigger verification are as follows:
the shutdown monitoring device (14) monitors a scram signal and transmits the scram signal to the simulation modeling server (17) to simulate reactor scram:
the step motor simulation module (17-1) transmits the signals to a step motor driving clamping piece (15-1) through a step motor A/D conversion clamping piece (16-1) and drives a step motor (3) to act, and the starting time of the step motor (3) is tested; the stepping motor (3) drives the control rod (2) to be rapidly inserted downwards to the shutdown depth, and the control rod action response time and the measurement stroke in the emergency shutdown process are tested;
(2) safety function verification under the reactor accident condition:
initial state: the main helium fan (6) normally operates, an electric valve (5) at the inlet of the main helium fan and an electric valve (7) at the outlet of the main helium fan are opened, the water supply pump (8) normally operates, and a main water supply isolation valve (9) and a main steam isolation valve (12) are opened;
1) when a shutdown monitoring device (14) monitors that a pipe breakage accident occurs in a steam generator (4), an accident shutdown signal is triggered and transmitted to a simulation modeling server (17), a primary helium fan simulation module (17-3) receives the accident shutdown signal, the accident shutdown signal is transmitted to a primary helium fan driving clamping piece (15-3) by a primary helium fan A/D conversion clamping piece (16-3) and drives a primary helium fan (6) to stop running, and a shutdown characteristic curve of the primary helium fan (6) is monitored; the A/D conversion clamping piece (16-2) of the electric valve at the inlet of the main helium fan is transmitted to the driving clamping piece (15-2) of the electric valve at the inlet of the main helium fan and drives the electric valve (5) at the inlet of the main helium fan to be closed, and the closing time of the electric valve (5) at the inlet of the main helium fan is tested; the A/D conversion clamping piece (16-4) of the electric valve at the outlet of the main helium fan is transmitted to a driving clamping piece (15-4) of the electric valve at the outlet of the main helium fan and drives the electric valve (7) at the outlet of the main helium fan to be closed, and the closing time of the electric valve (7) at the outlet of the main helium fan is tested;
2) the water feeding pump A/D conversion clamping piece (16-7) is used for transmitting the water feeding pump A/D conversion clamping piece to a water feeding pump driving clamping piece (15-7) and driving a water feeding pump (8) to stop running, and a stop running characteristic curve of the water feeding pump (8) is monitored; the A/D conversion clamping piece (16-6) of the main water supply isolation valve is transmitted to a driving clamping piece (15-6) of the main water supply isolation valve and drives the main water supply isolation valve (9) to be quickly closed, and the closing time of the main water supply isolation valve (9) is verified to meet the design specification; the A/D conversion clamping piece (16-5) of the main steam isolation valve is transmitted to a driving clamping piece (15-5) of the main steam isolation valve and drives the main steam isolation valve (12) to be quickly opened, steam in the steam generator (4) is quickly discharged to a main steam discharge system (13), and the opening time of the main steam isolation valve (12) is verified to meet the design specification;
3) the discharge valve simulation module (17-8) receives an accident shutdown signal, transmits the accident shutdown signal to the discharge valve driving clamping piece (15-8) through the discharge valve A/D conversion clamping piece 16-8 and drives the discharge valve (10) to be rapidly opened, rapidly discharges the feed water in the steam generator (4) to the discharge tank (11), and verifies that the opening time of the discharge valve (10) meets the design specification;
4) after the main water supply isolation valve (9) is fully closed and the discharge valve (10) is fully opened, the main steam isolation valve (12) is closed after 10s of delay.
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