CN115620929B - A comprehensive test device for control rod drive system with multi-stress coupling - Google Patents
A comprehensive test device for control rod drive system with multi-stress coupling Download PDFInfo
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- CN115620929B CN115620929B CN202211293546.1A CN202211293546A CN115620929B CN 115620929 B CN115620929 B CN 115620929B CN 202211293546 A CN202211293546 A CN 202211293546A CN 115620929 B CN115620929 B CN 115620929B
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- 238000012360 testing method Methods 0.000 title claims abstract description 183
- 230000008878 coupling Effects 0.000 title claims abstract description 12
- 238000010168 coupling process Methods 0.000 title claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000007613 environmental effect Effects 0.000 claims abstract description 16
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 238000011156 evaluation Methods 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 20
- 238000004088 simulation Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/112—Measuring temperature
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a comprehensive test device for a multi-stress coupling control rod driving system, which comprises a control rod driving mechanism, a test body, a high-temperature high-pressure water movement test pipeline, a rod control rod position system test piece, an environment box, a rod position detector, a control rod driving mechanism stator, a rod control rod position control host and a control chamber, wherein the control rod driving mechanism is positioned in the test body, the test body is connected with the high-temperature high-pressure water movement test pipeline through a pipeline, the rod control rod position system test piece is positioned in the environment box, the rod position detector and the control rod driving mechanism stator are arranged on the test body, the rod control rod position control host is positioned in the control chamber, and the test body, the control chamber and the environment box are connected through an electric connecting piece. The device can develop the environmental test of the rod control rod position system while developing the thermal state life test of the drive line, and can obtain the comprehensive reliability evaluation of the control rod drive system in a shorter time by a stress acceleration method.
Description
Technical Field
The invention relates to the technical field of nuclear reactor control, in particular to a comprehensive test device for a multi-stress coupling control rod driving system.
Background
The reactor control rod driving system mainly comprises a control rod driving line and rod control rod position system equipment. The rod control rod position system equipment is used for sending driving currents with certain frequency, phase sequence and current to a stator of the control rod driving mechanism according to an external control instruction, so that the control rod driving mechanism can operate according to requirements, and meanwhile, the operation position of the control rod is measured, and the normal operation of the control rod driving system is ensured.
The reactor control rod driving system is a key system for the safety of a nuclear reactor core, and the long-term stable and reliable operation of the system is an important foundation for the safe operation of the nuclear reactor. Through the reliability design of key parts and systems, the structure and control are optimized from theory, and the optimized design is verified, improved and re-verified in a test development mode, so that the method is an effective way for improving the reliability level of equipment and systems. In order to verify whether the system can stably operate in a reactor for a long time, and whether parameters such as stable operation time, travel life, rod falling times, rod falling time and the like can meet engineering use requirements, a system test needs to be carried out. In the past, a long-life assessment test for a driving line and a driving mechanism is developed more, namely, the running environment of the driving line or the driving mechanism in a reactor is simulated, whether the service life of the driving mechanism meets the stroke index requirement is judged by developing continuous running of a certain stroke, observing running waveforms and finishing appointed actions smoothly, and when the driving mechanism runs, appointed rod dropping times are finished, rod dropping time is obtained, and whether related structures affecting the rod dropping time are reasonable and reliable in function is judged by the stability of the rod dropping time. And aiming at the rod control rod position system, the simulation load is adopted to carry out related design function test, and related verification test is completed through the driving mechanism or the driving wire test. The simulation load is mainly based on working condition parameters of each electromagnetic coil of a reactor control rod driving mechanism of the actually operated nuclear power station, and comprises electromagnetic performance, inductance, impedance characteristic, current conduction capacity and the like of the coils so as to truly reflect and simulate the characteristics of the actual load. However, the simulation load does not consider the high-temperature and high-pressure operation environment of the driving mechanism and the stress condition in the medium, and the actual stack environment has actual influence on the stress state of the driving mechanism and the electrical performance of the rod control rod position system.
With the demand for improving the reliability of nuclear power equipment, how to evaluate or verify the overall reliability and stability of a control rod driving system, which is a key system affecting the safety of a reactor core, is a focus of nuclear reactor design.
In view of this, the present application has been made.
Disclosure of Invention
The invention aims to solve the technical problems that the high-temperature high-pressure operation environment of a driving mechanism and the stress condition of the driving mechanism in a medium are not considered when the reliability and the stability of the rod position system are verified in a load simulation mode at present, so that the verification result of the rod position system is influenced. The comprehensive test device for the multi-stress coupling control rod driving system can be used for carrying out an environmental test of a rod control rod position system while carrying out a driving line thermal state life test, and obtaining a reliability verification result of the control rod driving system in a short time by a stress acceleration method.
The invention is realized by the following technical scheme:
The comprehensive test device for the multi-stress coupling control rod driving system comprises a control rod driving mechanism, a test body, a high-temperature high-pressure water movement test pipeline, a rod control rod position system test piece, an environment box, a rod position detector, a control rod driving mechanism stator, a rod control rod position control host and a control chamber, wherein the control rod driving mechanism is located in the test body, the test body is connected with the high-temperature high-pressure water movement test pipeline through a pipeline, the rod control rod position system test piece is located in the environment box, the rod position detector and the control rod driving mechanism stator are arranged on the test body, the rod control rod position control host is located in the control chamber, and the test body, the control chamber and the environment box are connected through an electric connection piece.
Further, when no moving water flushing is required, an electric heating element is further arranged in the test body.
Further, the high-temperature high-pressure dynamic water test pipeline comprises a test branch and a main pump, one end of the test branch is connected with the inlet of the test body, the other end of the test branch is connected with the outlet of the test body, and the main pump is arranged on the test branch and is positioned between the inlet and the outlet of the test body.
Further, the high-temperature high-pressure running water test pipeline further comprises a bypass branch, one end of the bypass branch is connected between the inlet of the test body and the main pump, and the other end of the bypass branch is connected between the outlet of the test body and the main pump.
Further, the high-temperature high-pressure dynamic water test pipeline further comprises an auxiliary system, and the auxiliary system is connected with two ends of the main pump in a bridging mode.
Further, the control rod driving mechanism is used for thermal state life test and providing real load for the rod control rod position system.
Further, the environmental chamber is proximate to the test body.
Furthermore, the environment box is used for providing a simulation environment for the rod control rod position test piece, and the temperature and the humidity in the environment box are adjustable.
Furthermore, the environment box is also used for providing acceleration stress for the rod control rod position test piece, and the acceleration stress comprises constant single stress, stepping single stress and temperature and humidity double stress.
Furthermore, the environment box comprises a computing unit loaded with an Arrhenius model, and the computing unit is used for converting the running time of the rod control rod position system under the test working condition to obtain the equivalent time under the normal working condition.
Compared with the prior art, the invention has the advantages that on one hand, the control rod driving wire/driving mechanism is arranged in the test body, the test body is connected into the high-temperature high-pressure water-driving test pipeline through the pipeline to provide an environment simulating the operation working condition of the reactor for the driving wire/driving mechanism, on the other hand, the key components of the rod position control system are arranged in the environment box, different temperatures, humidity and change curves of the key components can be set in the environment box, an adjustable and controllable simulation environment is provided for the environment test of the key components of the rod position control system, on the other hand, the rod position detector and the driving mechanism stator are arranged on the test body, the key components of the rod position control system are arranged in the environment box, the rod position control computer is arranged in the test control system, and the transmission of power control signals, rod position measurement and feedback signals is completed among the three components through the electric connection pieces. Through the arrangement of the three aspects, the reliability related test of the rod control rod position can be completed while the thermal state service life test of the driving line/driving mechanism is carried out, the environment box can provide required acceleration stress for a rod control rod position system test piece, and the effect of completing the reliability test of the rod control rod position sample machine in a shorter time is realized. In addition, in the device, the rod control rod position control program is positioned outside the environment box, and can control and monitor the driving mechanism and the rod control rod position signal at any time. The driving line/driving mechanism and the rod control rod position system can simultaneously carry out joint debugging and testing, and can timely suspend testing according to fault conditions in the testing process, and the follow-up testing can be carried out after optimizing and improving the test piece. In addition, during the test, the performance of the driving mechanism can be checked and tested through the rod control rod position test control cabinet, if the rod control rod position test piece fails, the working condition of the environment box can be suspended in time to process the test piece, and the test in the environment box can be continuously carried out immediately after the processing is finished, so that the operation is convenient. The temperature measuring points can be set for the local area of the rod control rod position test piece and led out from the environment box to the loop device measuring and controlling system, so that the abnormal phenomenon of the test piece can be conveniently and timely monitored and found. The life test of the driving mechanism and the environmental test of the rod control rod position test piece can be performed simultaneously, so that the test cost and time are saved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a thermal life test flow of a control rod drive wire/drive mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a connection relationship between a control rod driving system and an environmental box according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of a rod control rod position system test composition according to an embodiment of the present invention.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Examples
With the demand for improving the reliability of nuclear power equipment, how to evaluate or verify the overall reliability and stability of a control rod driving system, which is a key system affecting the safety of a reactor core, is a focus of nuclear reactor design. However, at present, a rod control rod position system mostly adopts a simulated load to develop related design function tests, and related verification tests are completed through a driving mechanism or a driving wire test. The simulation load is mainly based on working condition parameters of each electromagnetic coil of a reactor control rod driving mechanism of the actually operated nuclear power station, and comprises electromagnetic performance, inductance, impedance characteristic, current conduction capacity and the like of the coils so as to truly reflect and simulate the characteristics of the actual load. However, the simulation load does not consider the high-temperature and high-pressure operation environment of the driving mechanism and the stress condition in the medium, and the actual stack environment has actual influence on the stress state of the driving mechanism and the electrical performance of the rod control rod position system.
Aiming at the technical problems, the embodiment provides a comprehensive test device of a control rod driving system with multi-stress coupling, which is used for a comprehensive test of a reactor control rod driving system, can simultaneously develop a driving mechanism/driving wire thermal state life test and a rod control rod position reliability growth test, can meet the high-temperature, high-pressure and flow working conditions of the driving mechanism/driving wire thermal state life test, provides actual running electric load and temperature load for a rod control rod position system, and can provide temperature and humidity stress for a rod control rod position test piece through an environment box, thereby realizing the comprehensive test device with multi-stress coupling. By introducing the method for accelerating the environmental stress, the environmental test is carried out on the rod position control system, and the reliability evaluation of the rod position control system can be obtained in a shorter time.
The device can be used for checking and testing the performance of the driving mechanism in a life test by arranging measurement and control signals of a rod position system of the rod control, and obtaining characteristic parameters such as action current, running waveform and the like on a rod position test control cabinet, so that the performance of the driving mechanism is evaluated. The temperature measuring point can be set for the concerned area of the rod control rod position test piece, and the abnormal phenomenon of the test piece can be timely monitored and found. The device can truly simulate the actual operation condition of a reactor driving system, and meanwhile, the method for coupling acceleration stress can find out the defects of the rod control rod position test piece in a short time, so that the device has strong support for improving and evaluating the reliability of equipment.
The comprehensive test device for the multi-stress coupled control rod driving system comprises a control rod driving mechanism, a test body, a high-temperature high-pressure water movement test pipeline, a rod control rod position system test piece, an environment box, a rod position detector, a control rod driving mechanism stator, a rod control rod position control host and a control chamber, wherein the control rod driving mechanism is located in the test body, the test body is connected with the high-temperature high-pressure water movement test pipeline through a pipeline, the rod control rod position system test piece is located in the environment box, the rod position detector and the control rod driving mechanism stator are arranged on the test body, the rod control rod position control host is located in the control chamber, and the test body, the control chamber and the environment box are connected through an electric connection piece.
As shown in FIG. 1, a driving mechanism or a driving wire is arranged in the test body, and when the test does not have the requirement of flowing water flushing, an electric heating element can be arranged in the test body to meet the requirement of a thermal state working condition. When the dynamic water flushing requirement exists, the test body can be connected into the test branch through the inlet and outlet connecting pipes, and the requirements of thermal state and flow working conditions are met through the main pump, the auxiliary system and the like. The high-temperature high-pressure dynamic water test pipeline shown in the figure 1 comprises a test branch and a main pump, wherein one end of the test branch is connected with an inlet of the test body, the other end of the test branch is connected with an outlet of the test body, and the main pump is arranged on the test branch and is positioned between the inlet and the outlet of the test body. The high-temperature high-pressure dynamic water test pipeline further comprises a bypass branch and an auxiliary system, one end of the bypass branch is connected between the inlet of the test body and the main pump, and the other end of the bypass branch is connected between the outlet of the test body and the main pump. The auxiliary system is connected across the two ends of the main pump. It should be noted that the driving mechanism/driving line in the test body is a test piece for thermal life test, and also provides a real load for the rod position control system.
As shown in fig. 2, during testing, the driving mechanism/driving wire is installed in the thermal state test body, the rod position test cabinet is placed in the control room, the rod position test piece is placed in the environment box, and the signal wire between the rod position test piece and the driving mechanism cannot be transmitted remotely, so that the environment box for placing the rod position test piece is generally close to the driving mechanism of the test body as much as possible, and the rod position test cabinet can be controlled remotely and display the rod position by virtue of the operating system, and can be practically placed in the control duty room in combination with the site. It should be noted that, the environment box can provide the required acceleration stress for the rod position system test piece, and an Arrhenius model can be selected as an acceleration model for conversion, so that the running time of the rod position system under the test working condition is converted to obtain the equivalent time under the normal working condition, and the effect of completing the reliability test of the rod position sample machine in a shorter time is achieved. Regarding the selection of the acceleration stress of the rod control rod position system, corresponding test schemes such as constant single stress, stepping single stress, temperature and humidity double stress and the like can be formulated according to the running time of the driving line/driving mechanism, and finally the time required by the two tests is matched as much as possible.
As shown in FIG. 3, in the aspect of signal connection relation of the rod position control system, the measurement and control system taking the rod position control system as a driving mechanism can normally output control signals and receive induction signals, and meanwhile, key components are used as test pieces to carry out environmental tests in an environmental box.
In summary, the comprehensive test device for the multi-stress coupled control rod driving system provided by the embodiment can develop an environmental test of the rod control rod position system while developing a thermal state life test of a driving line, and can obtain comprehensive reliability evaluation of the control rod driving system in a shorter time by a stress acceleration method. The control rod driving wire/driving mechanism is arranged in the test body, and the test body can be connected into a high-temperature high-pressure dynamic water test pipeline through a pipeline so as to provide an environment for simulating the operation working condition of the reactor, such as temperature, pressure, flow and the like for the driving wire/driving mechanism. And secondly, the key components of the rod position control rod system are placed in an environment box, and the environment box can be provided with different temperatures, humidity and change curves thereof, so that an adjustable and controllable simulation environment is provided for the environment test of the rod position control rod key components. And thirdly, the rod position detector and the driving mechanism stator are arranged on the test body, the rod position key component is placed in the environment box, the rod position control computer is placed in the test control, and the transmission of the power control signal, the rod position measurement and the feedback signal is completed through the electric connecting piece.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211293546.1A CN115620929B (en) | 2022-10-21 | 2022-10-21 | A comprehensive test device for control rod drive system with multi-stress coupling |
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| CN202211293546.1A CN115620929B (en) | 2022-10-21 | 2022-10-21 | A comprehensive test device for control rod drive system with multi-stress coupling |
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| CN115620929B true CN115620929B (en) | 2025-01-21 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854708A (en) * | 2012-11-29 | 2014-06-11 | 中广核工程有限公司 | Nuclear power station rod-control and rod-position system for driving test |
| CN104751905A (en) * | 2015-04-22 | 2015-07-01 | 中国工程物理研究院总体工程研究所 | Impact force sensor for control rod |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5408508B1 (en) * | 1993-12-22 | 1997-03-25 | Westinghouse Electric Corp | System and method for simultaneously testing a plurality of control rods |
| JPH10160889A (en) * | 1996-11-29 | 1998-06-19 | Toshiba Corp | Friction testing device for control rod driving mechanism |
| KR100643787B1 (en) * | 2004-07-29 | 2006-11-10 | 한국전력공사 | Abrasion Tester for Steam / Water Mixing Environmental Materials |
| CN103500524B (en) * | 2013-09-29 | 2016-01-06 | 中广核工程有限公司 | Nuclear power plant's Control rod drive line line cold test device and test method |
| JP2015219033A (en) * | 2014-05-14 | 2015-12-07 | 株式会社日立製作所 | Control rod operation monitoring system, control rod individual control part, and testing method for control rod operation monitoring system |
| CN105702304A (en) * | 2016-01-08 | 2016-06-22 | 上海核工程研究设计院 | Reactor control rod drive line comprehensive performance testing and verifying device |
| CN107221363B (en) * | 2017-05-25 | 2019-03-12 | 中国核动力研究设计院 | Detect the system and its experimental rig of pressurized water reactor control rod drive mechanism performance |
| CN107481774B (en) * | 2017-07-18 | 2019-04-16 | 西安交通大学 | A kind of pilot system and its test method of the passive shutdown unit of nuclear reactor |
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- 2022-10-21 CN CN202211293546.1A patent/CN115620929B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854708A (en) * | 2012-11-29 | 2014-06-11 | 中广核工程有限公司 | Nuclear power station rod-control and rod-position system for driving test |
| CN104751905A (en) * | 2015-04-22 | 2015-07-01 | 中国工程物理研究院总体工程研究所 | Impact force sensor for control rod |
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