CN112530612A - Hydraulic simulator of control rod guide cylinder assembly - Google Patents
Hydraulic simulator of control rod guide cylinder assembly Download PDFInfo
- Publication number
- CN112530612A CN112530612A CN202011363527.2A CN202011363527A CN112530612A CN 112530612 A CN112530612 A CN 112530612A CN 202011363527 A CN202011363527 A CN 202011363527A CN 112530612 A CN112530612 A CN 112530612A
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- Prior art keywords
- control rod
- guide cylinder
- rod guide
- cylinder assembly
- prototype
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
-
- 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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- 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 control rod guide cylinder assembly hydraulics simulator, which comprises: the lower pipe is used for simulating a lower guide cylinder assembly in a control rod guide cylinder prototype; the upper circular tube is connected to the lower tube in a group and used for simulating an upper guide cylinder assembly in a control rod guide cylinder prototype; and the center rod extends in the upper round tube and the lower round tube and is used for simulating a control rod driving rod and a thermal sleeve in a control rod guide cylinder prototype. Compared with the prior art, the hydraulic simulation body of the control rod guide cylinder assembly not only simulates the external geometric structure of the control rod guide cylinder assembly, but also simulates the design of the interior of the guide cylinder assembly, the structural form of adding the resistance adjusting sheet on the center rod can simulate the guide partition plate of a prototype, and the axial resistance distribution can be adjusted by replacing the resistance adjusting sheet, so that the flow resistance distribution of the simulation body and the prototype of the control rod guide cylinder assembly along the axial direction is correspondingly consistent, and the hydraulic power is similar.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to a hydraulic simulator of a control rod guide cylinder assembly.
Background
In the field of nuclear power technology, before a new reactor is designed and operated, in order to obtain safety analysis data of the new reactor, a scaled-down overall mechanical experiment is generally required to be carried out so as to study the flow distribution characteristics among fuel assemblies at the inlet of a reactor core, the pressure drop characteristics of the reactor, and the mixing characteristics of partial chambers.
In the reactor overall hydraulics proportion simulation experiment in the prior art, the experiment comprises a flow distribution experiment, a mixing experiment, a flow field distribution experiment and a hydraulic load experiment, and a method that the external geometry of a guide cylinder assembly is similar and the internal water passing area ratio of the guide cylinder assembly is the same as that of a prototype is generally adopted for the simulation of a control rod guide cylinder assembly. The simulation experiment only simulates the lower guide cylinder assembly in the upper cavity, and the upper guide cylinder assembly in the upper end socket is simplified and omitted. The guide cylinder simulation bodies are all in a hollow form, and cannot reflect the hydraulic characteristics in the guide cylinder prototype, so that the difference between the distribution of flow parameters such as flow speed and pressure in the guide cylinder simulation bodies and the prototype is large.
In view of the above, it is necessary to provide a hydraulic simulator of a control rod guide cylinder assembly to truly embody the hydraulic characteristics of the control rod guide cylinder assembly, and facilitate the development of a reactor upper head and an upper chamber hydraulic simulation experiment.
Disclosure of Invention
The invention aims to: the hydraulic simulation body overcomes the defects of the prior art, and provides the hydraulic simulation body for the control rod guide cylinder assembly so as to truly embody the hydraulic characteristics of the control rod guide cylinder assembly and facilitate the development of a reactor upper head and an upper chamber hydraulic simulation experiment.
In order to achieve the above object, the present invention provides a control rod guide cylinder assembly hydraulics simulator, comprising:
the lower pipe is used for simulating a lower guide cylinder assembly in a control rod guide cylinder prototype;
the upper circular tube is connected to the lower tube in a group and used for simulating an upper guide cylinder assembly in a control rod guide cylinder prototype; and
and the center rod extends in the upper round tube and the lower round tube and is used for simulating a control rod driving rod and a heat sleeve in a control rod guide cylinder prototype.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, the bottom of the lower pipe is axially provided with a continuous guide structure for simulating the continuous guide assembly in a control rod guide cylinder prototype.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, the continuous guide structure is fixed at the bottom of the lower pipe through welding.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, the outlet of the upper round tube is provided with a conical structure for simulating a horn cover in a control rod guide cylinder prototype.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, a throat structure is arranged above the upper round tube and used for simulating a round hole at the top end of the upper guide cylinder in a control rod guide cylinder prototype, and the throat structure is welded and fixed with the conical structure through a rib plate.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, the throat structure is fixed at the top of the upper round pipe through a radial screw.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly of the invention, the center rod is provided with a replaceable resistance adjusting sheet for simulating a guide clapboard in a control rod guide cylinder prototype so as to adjust the axial resistance.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, the resistance adjusting sheet is fixed on the center rod in the lower tube and the upper tube through radial screws.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, the center rod is provided with a star-shaped support structure for radially supporting the center rod.
As an improvement of the hydraulic simulator of the control rod guide cylinder assembly, the star-shaped support structure is fixed on the center rod in the lower tube and the upper tube through radial screws.
Compared with the prior art, the hydraulic simulator of the control rod guide cylinder assembly has the following advantages:
firstly, the hydraulic simulator of the control rod guide cylinder assembly not only simulates the external geometric structure of the control rod guide cylinder assembly, but also simulates the design of the interior of the guide cylinder assembly, the structural form of adding a resistance adjusting sheet on a center rod can simulate a guide clapboard of a control rod guide cylinder assembly prototype, and the axial resistance distribution can be adjusted by replacing the resistance adjusting sheet, so that the hydraulic simulator of the control rod guide cylinder assembly and the control rod guide cylinder assembly prototype are correspondingly consistent in flow resistance distribution along the axial direction, and the hydraulic power is similar;
secondly, through the change of resistance adjustment piece, can make the analogue body adapt to the guide cylinder subassembly simulation of different internal structure forms or different parameters, its use has the commonality. Through the special design of the resistance adjusting sheet structure, the pressure drop in the guide cylinder can be free from the influence of the change of the flowing direction of the fluid, so that the experimental result has better repeatability.
Finally, the pressure taking hole is designed in the hydraulic simulator of the control rod guide cylinder assembly, so that the problem of accurate measurement of the pressure point and the pressure field of the control rod guide cylinder assembly in the upper seal head and the upper cavity can be solved, the lower guide cylinder assembly and the upper guide cylinder assembly are accurately simulated, the hydraulic simulator can be used for experiments related to the whole hydraulics of the reactor, and the accuracy of experimental results can be improved.
Drawings
The hydraulic simulator of the control rod guide cylinder assembly and the technical effects thereof according to the present invention will be described in detail with reference to the accompanying drawings and the detailed description, wherein:
FIG. 1 is a schematic structural view of a hydraulic simulator of a control rod guide cylinder assembly according to the present invention.
FIG. 2 is a schematic cross-sectional view of a control rod guide cylinder assembly hydraulics simulator of the present invention.
Reference numerals
Lower tube-10; resistance adjusting sheet-100;
an upper round tube-20; cone structure-200; rib plate-202; throat structure-204; a star-shaped support structure-206; a flange-208;
a central rod-30;
continuous guide structure-40.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the present invention provides a hydraulic simulator of a control rod guide cylinder assembly, which includes:
a lower pipe 10 for simulating a lower guide cylinder assembly in a control rod guide cylinder prototype;
an upper circular tube 20 assembled to the lower tube 10 (for example, the lower tube 10 and the upper circular tube 20 are connected and fixed by respective flanges) for simulating an upper guide cylinder assembly in a control rod guide cylinder prototype; and
a center rod 30, extending within the lower tube 10 and the upper tube 20, is used to simulate the control rod drive rod and the thermal sleeve in a control rod guide cylinder prototype.
In the illustrated embodiment, the bottom of the lower tube 10 is provided with a continuous guide structure 40 in the axial direction for simulating a continuous guide assembly in a control rod guide cylinder prototype, and the continuous guide structure 40 is fixed to the bottom of the lower tube 10 by welding. The outlet of the upper barrel 20 is provided with a cone structure 200 for simulating the horn cover in a control rod guide cylinder prototype. Therefore, the geometric structure similarity between the control rod guide cylinder assembly hydraulics simulator and the simulation control rod guide cylinder prototype is ensured, and the hydraulic simulation device is simple in structure and convenient to operate. A throat structure 204 is arranged above the upper circular tube 20 and used for simulating a top round hole of an upper guide cylinder in a control rod guide cylinder prototype, in the illustrated embodiment, the throat structure 204 is welded and fixed with the conical structure 200 through a rib plate (not illustrated), and the throat structure 204 is fixed at the top of the upper circular tube 20 through radial screws. The central rod 30 is connected with the top of the upper round tube 20 through a ribbed plate to form an integrated structure, which is convenient for dismounting the central rod 30 and replacing the resistance adjusting sheet 100.
The hydraulic simulator of the control rod guide cylinder assembly not only simulates the external geometric structure of the control rod guide cylinder assembly, but also simulates the design of the interior of the guide cylinder assembly: the central rod 30 is provided with replaceable resistance adjusting blades 100 for simulating a guide diaphragm in a control rod guide cylinder prototype to adjust axial resistance, the number and positions of the resistance adjusting blades 100 correspond to the prototype guide diaphragm structure one by one, and in application, the number and positions of the resistance adjusting blades 100 can be adjusted and optimized according to actual needs. The axial resistance distribution is adjusted by replacing the resistance adjusting sheet 100, so that the hydraulic simulation body of the control rod guide cylinder assembly and the prototype of the control rod guide cylinder assembly are correspondingly consistent in flow resistance distribution along the axial direction, and the hydraulic power is similar. According to one embodiment of the present invention, the resistance adjustment blade 100 is fixed to the center rod 40 inside the lower tube 10 and the upper tube 20 by means of radial screws. Through the special design of the structure of the resistance adjusting sheet 100, the pressure drop in the guide cylinder can not be influenced by the change of the flowing direction of the fluid, so that the experimental result has better repeatability.
The central rod 30 is provided with a star-shaped support structure 206 for radially supporting the central rod against tilting and radial movement. The star-shaped support structure 206 is fixed to the central rod 30 inside the lower tube 10 and the upper tube 20 by means of radial screws.
In combination with the above detailed description of the embodiments of the present invention, it can be seen that the hydraulic simulator of the control rod guide cylinder assembly of the present invention has the following advantages over the prior art:
firstly, the hydraulic simulator of the control rod guide cylinder assembly not only simulates the external geometric structure of the control rod guide cylinder assembly, but also simulates the design of the interior of the guide cylinder assembly. The structural form of the resistance adjusting sheet 100 added on the center rod 30 can simulate the guide clapboard of the control rod guide cylinder assembly prototype, the axial resistance distribution can be adjusted by replacing the resistance adjusting sheet 100, so that the hydraulic simulation body of the control rod guide cylinder assembly and the flow resistance distribution of the control rod guide cylinder assembly prototype along the axial direction are correspondingly consistent, the hydraulic characteristics of the control rod guide cylinder assembly can be truly embodied, the hydraulic simulation experiment of the upper reactor head and the upper chamber is developed, and the hydraulic power similarity is realized;
secondly, through the replacement of the resistance adjusting sheet 100, the simulator can adapt to the simulation of the guide cylinder assembly with different internal structural forms or different parameters, and the use of the simulator has universality. Through the special design of the structure of the resistance adjusting sheet 100, the pressure drop in the guide cylinder can not be influenced by the change of the flowing direction of the fluid, so that the experimental result has better repeatability.
Finally, the pressure taking hole is designed in the hydraulic simulator of the control rod guide cylinder assembly, so that the problem of accurate measurement of the pressure point and the pressure field of the control rod guide cylinder assembly in the upper seal head and the upper cavity can be solved, the lower guide cylinder assembly and the upper guide cylinder assembly are accurately simulated, the hydraulic simulator can be used for experiments related to the whole hydraulics of the reactor, and the accuracy of experimental results can be improved.
The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A control rod guide cylinder assembly hydraulics simulator, comprising:
the lower pipe is used for simulating a lower guide cylinder assembly in a control rod guide cylinder prototype;
the upper circular tube is connected to the lower tube in a group and used for simulating an upper guide cylinder assembly in a control rod guide cylinder prototype; and
and the center rod extends in the upper round tube and the lower round tube and is used for simulating a control rod driving rod and a heat sleeve in a control rod guide cylinder prototype.
2. The control rod guide barrel assembly hydraulics simulator of claim 1 wherein the bottom of the lower tube is axially provided with a continuous guidance structure for simulating a continuous guidance assembly in a control rod guide barrel prototype.
3. The control rod guide barrel assembly hydraulics simulator of claim 2, wherein the continuous guide structure is secured to the bottom of the lower tube by welding.
4. The control rod guide barrel assembly hydraulics simulator of claim 1 wherein the exit of the upper round tube is provided with a tapered configuration for simulating a horn cover in a control rod guide barrel prototype.
5. The control rod guide cylinder assembly hydraulics simulator of claim 4, wherein a throat structure is arranged above the upper circular tube and used for simulating a top round hole of an upper guide cylinder in a control rod guide cylinder prototype, and the throat structure is welded and fixed with the conical structure through a rib plate.
6. The control rod guide barrel assembly hydraulics simulator of claim 5, wherein the throat structure is secured to the top of the upper tube by a radial screw.
7. The control rod guide barrel assembly hydraulics simulator of claim 1 wherein the center rod is provided with replaceable resistance tuning tabs for simulating a guide spacer in a control rod guide barrel prototype to adjust axial resistance.
8. The control rod guide barrel assembly hydraulics simulator of claim 7, wherein the resistance adjustment tab is secured to the center rod within the lower and upper tubes by radial screws.
9. The control rod guide barrel assembly hydraulics simulator of claim 1, wherein the center rod is provided with a star shaped support structure for radially supporting the center rod.
10. The control rod guide barrel assembly hydraulics simulator of claim 9, wherein the star support is secured to the center rod within the lower and upper tubes by radial screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363527.2A CN112530612A (en) | 2020-11-27 | 2020-11-27 | Hydraulic simulator of control rod guide cylinder assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363527.2A CN112530612A (en) | 2020-11-27 | 2020-11-27 | Hydraulic simulator of control rod guide cylinder assembly |
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| Publication Number | Publication Date |
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| CN112530612A true CN112530612A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011363527.2A Pending CN112530612A (en) | 2020-11-27 | 2020-11-27 | Hydraulic simulator of control rod guide cylinder assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093537A (en) * | 2021-10-29 | 2022-02-25 | 中广核研究院有限公司 | nuclear reactor model |
| CN114550955A (en) * | 2022-02-16 | 2022-05-27 | 中国核动力研究设计院 | Nuclear power reactor core thermal simulation device |
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| CN107221363A (en) * | 2017-05-25 | 2017-09-29 | 中国核动力研究设计院 | Detect the system and its experimental rig of pressurized water reactor CRDM performance |
| CN111028640A (en) * | 2019-11-11 | 2020-04-17 | 中广核研究院有限公司 | Thermal state test device for control rod drive wire and centering method thereof |
| CN211207982U (en) * | 2019-10-30 | 2020-08-07 | 上海雷奎流体科技有限公司 | Fuel assembly hydraulics simulation piece test device with pressure drop adjusting function |
| CN111780960A (en) * | 2020-07-24 | 2020-10-16 | 国核示范电站有限责任公司 | Control rod drive mechanism testing arrangement |
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2020
- 2020-11-27 CN CN202011363527.2A patent/CN112530612A/en active Pending
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| JPH0474995A (en) * | 1990-07-17 | 1992-03-10 | Hitachi Ltd | Control rod drive mechanism |
| KR20140087876A (en) * | 2012-12-31 | 2014-07-09 | 두산중공업 주식회사 | Wear resistance testing apparatus for latch guide tube of control element drive mechanism latch assembly and wear resistance testing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093537A (en) * | 2021-10-29 | 2022-02-25 | 中广核研究院有限公司 | nuclear reactor model |
| CN114093537B (en) * | 2021-10-29 | 2024-11-08 | 中广核研究院有限公司 | Nuclear reactor model |
| CN114550955A (en) * | 2022-02-16 | 2022-05-27 | 中国核动力研究设计院 | Nuclear power reactor core thermal simulation device |
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