CN112201374B - Eccentric reactor reloading device - Google Patents
Eccentric reactor reloading device Download PDFInfo
- Publication number
- CN112201374B CN112201374B CN202011079947.8A CN202011079947A CN112201374B CN 112201374 B CN112201374 B CN 112201374B CN 202011079947 A CN202011079947 A CN 202011079947A CN 112201374 B CN112201374 B CN 112201374B
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- plug body
- channel
- reactor
- axis
- eccentric
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- 239000008358 core component Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000003758 nuclear fuel Substances 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 239000000306 component Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
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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
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
-
- 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)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses an eccentric reactor material changing device, relates to the technical field of reactor material changing devices, and particularly relates to an eccentric reactor material changing device for online reactor material changing. The main body of the invention is a plug body which is arranged at the upper part of a reactor container through a bearing; the method is characterized in that: n channel groups with the same layout are uniformly arranged on the plug body in the circumferential direction in the central area; the channel group comprises a plurality of independent channels; the arrangement axis of the channel group and the axis of the plug body are eccentrically arranged; the central area of the plug body is provided with a positioning channel, and the axis of the positioning channel coincides with the arrangement axis of the channel group. The N channel groups are uniformly arranged along the circumferential direction of the plug body, so that the positions of the channels after the plug body rotates correspond to the positions of the corresponding reactor core components, and the rotation angle of the plug body is an integer multiple of 360 degrees/N. The technical scheme of the invention solves the problems of high manufacturing and assembling difficulty, high workload of field installation, easiness in causing operation faults of the reactor and the like of the refueling device in the prior art.
Description
Technical Field
The invention discloses an eccentric reactor material changing device, relates to the technical field of reactor material changing devices, and particularly relates to an eccentric reactor material changing device for online reactor material changing.
Background
The reactor refueling device is equipment for monitoring the operation and the state of parts in the reactor, and the central area of the reactor refueling device is uniformly distributed with channel groups in the circumferential direction, wherein the channel groups comprise a plurality of independent channels, and the positions of the channels correspond to the positions of corresponding reactor core components in the reactor.
The coaxial arrangement of the axis of passage lease and the axis of the on-line refueling reactor refueling device creates the following 3 problems:
Firstly, an on-line refueling reactor refueling device consists of two or more plug bodies, each plug body consists of thousands of parts, and the plug bodies are influenced by eccentric center of gravity and assembly deviation, so that the channel position on the refueling device is deviated from the position of a corresponding reactor core assembly after assembly, and the difficulty of equipment manufacture and assembly is increased for reducing the deviation;
Secondly, if the position deviation of the lower end of the channel on the material changing device is too large during installation, the material changing device does not have the channel position adjusting capability, the position of the assembly needs to be integrally adjusted, and the workload of field device installation is increased;
Thirdly, the deformation after heating in the reactor is difficult to accurately predict, and after the reactor operates, if the channel position on the refueling device and the position of the corresponding reactor core assembly deviate too much, the channel on the refueling device and the corresponding reactor core assembly cannot be in butt joint, and the refueling device is not provided with channel position adjusting capability, so that the reactor operation fault is caused.
In the process of operating the reactor core assembly, the channels play a role in guiding and positioning, and as the plug body channels are arranged fully, the distance between adjacent channels is relatively short, and the purpose of increasing the maximum allowable offset of the channels cannot be realized by increasing the diameter of the channels.
In order to solve the problems in the prior art, it is necessary to design a novel eccentric reactor refueling device so as to overcome the problems in the prior art.
Disclosure of Invention
According to the technical problems that the manufacturing and assembling difficulties of the refueling device are high, the workload of field installation is high, the operation faults of the reactor are easy to cause and the like, the eccentric reactor refueling device is provided. The invention mainly adopts N channel groups with the same layout which are uniformly distributed in the circumferential direction in the central area of the plug body, wherein the channel groups comprise a plurality of independent channels, and the arrangement axes of the channel groups and the axes of the plug body are eccentrically arranged. The position of the arrangement axis of the channel group can be adjusted by rotating the plug body, so that the capacity of compensating the position deviation of the channel is achieved, the risk that the on-line refueling reactor cannot be operated in the reactor due to overlarge channel position deviation is reduced, and meanwhile, the requirements on equipment manufacturing and assembly precision are reduced.
The invention adopts the following technical means:
An eccentric reactor material-changing device, the main body of which is a plug body, the plug body is arranged on the upper part of a reactor container through a bearing; the method is characterized in that:
Further, N channel groups with the same layout are uniformly arranged on the plug body in the circumferential direction in the central area;
Further, the channel group comprises a plurality of independent channels;
further, the arrangement axis of the channel group and the axis of the plug body are eccentrically arranged;
Further, a locating channel is arranged in the central area of the plug body, and the axis of the locating channel coincides with the arrangement axis of the channel group.
Further, the N channel groups are uniformly arranged along the circumferential direction of the plug body, so that the positions of the channels after the plug body rotates correspond to the positions of the corresponding reactor core components, and the rotation angle of the plug body is an integer multiple of 360 degrees/N.
Further, the arrangement axes of the channel groups are arranged in an allowable range, the maximum allowable offset of the positions of the channels and the corresponding reactor core components is e max, and after the plug body rotates by 360 degrees/N integer times for meeting the design position, the channels can be butted with the reactor core components, and the offset needs to meet
Further, the eccentric amount of the arrangement axis of the channel group and the axis of the plug body is e, and the movement track of the lower end point of the arrangement axis of the channel group is a circle taking the center of the plug body as the center of a circle and e is a radius by rotating the plug body; the minimum adjustment of the position of the channel along the eccentric opposite direction isThe amount of offset allowed by the channel is increased.
The arrangement axis of the channel group and the axis of the plug body are eccentrically arranged, the plug body is rotated, and the projection of the motion trail of the lower end point of the arrangement axis of the channel group on the horizontal plane takes the center of the plug body as the center of a circle, and the eccentric value e is a circle with a radius. By rotating the plug body, the position of each channel can be adjusted. Because the N channel groups are uniformly arranged along the circumferential direction, in order to ensure that the positions of the channels after the plug body rotates correspond to the positions of the corresponding reactor core components, the rotation angle of the plug body should be an integer multiple of (360 degrees/N).
N groups of channels are uniformly distributed in the circumferential direction in the central area of the refueling device, when the position offset of the channels relative to the position of the reactor core assembly exceeds the allowable range, the positions of the channels can be adjusted after the plug body rotates by 360 degrees/N integral multiples, and the compensation capability is provided for the position offset of the channels. Because the N groups of channels are uniformly arranged on the material changing device along the circumferential direction, after the plug body rotates by 360 degrees/N integral multiple, the position change of each channel is equal to the position change of the channel arrangement axis, and the on-line adjustment of the channel position is realized.
Compared with the prior art, the invention has the following advantages:
1. According to the eccentric reactor refueling device provided by the invention, the arrangement axis of the channel group is set to be eccentric with the axis of the plug body, so that the function of adjusting the channel position after the reactor runs is realized, the channel position deviation is compensated, and the risk that the on-line refueling reactor cannot be operated in the reactor due to overlarge channel position deviation is reduced;
2. According to the eccentric reactor refueling device provided by the invention, the arrangement axis of the channel lease is set to be eccentric with the axis of the plug body, so that the precision requirements of equipment manufacturing and assembly are reduced.
In conclusion, the technical scheme of the invention solves the problems of high manufacturing and assembling difficulty, high workload of field installation, easiness in causing reactor operation faults and the like of the refueling device in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the corresponding locations of the channel and core assembly of the present invention;
FIG. 2 is a schematic diagram of the corresponding positions of the channel and core assembly of the present invention after the offset of the lower end of the channel exceeds the allowable value;
FIG. 3 is a schematic view of the channel and core assembly position after channel position adjustment of the present invention after the channel lower end offset exceeds the allowable value.
In the figure: 1. a plug body 2, a channel 3 and a reactor core assembly;
A. the axis B of the plug body and the arrangement axis of the channel lease.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in the figure, the invention provides an eccentric reactor refueling device, the main body of which is a plug body 1, and the plug body 1 is arranged at the upper part of a reactor container through a bearing; the method is characterized in that:
n channel groups 2 with the same layout are uniformly arranged on the plug body 1 in the circumferential direction in the central area;
the channel group 2 comprises a plurality of individual channels 21;
The arrangement axis of the channel group 2 is eccentrically arranged with the axis of the plug body 1;
The central area of the plug body 1 is provided with a positioning channel 22, and the axis of the positioning channel 22 coincides with the arrangement axis of the channel group 2.
The N channel groups 2 are uniformly arranged along the circumferential direction of the plug body 1, so as to ensure that the positions of the channels 21 after the rotation of the plug body 1 correspond to the positions of the corresponding core assemblies 3, and the rotation angle of the plug body 1 is an integer multiple of 360 °/N.
The arrangement axes of the channel group 2 are arranged in an allowable range, the maximum allowable offset of the positions of the channels 21 and the corresponding core assemblies 3 is e max, and after the plug body 1 rotates for 360 degrees/N integer times in order to meet the design position, the channels 21 can be butted with the core assemblies 3, and the offset is required to meet
The eccentric amount of the arrangement axis of the channel group 2 and the axis of the plug body 1 is e, and by rotating the plug body 1, the motion track of the lower end point of the arrangement axis of the channel group 2 is a circle taking the center of the plug body 1 as the center of a circle, and e is a radius; the minimum adjustment of the position of the channel 21 in the eccentric opposite direction isThe amount of offset allowed by the channel 21 is increased.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (2)
1. An eccentric reactor material-changing device, the main body of which is a plug body (1), the plug body (1) is arranged at the upper part of a reactor container through a bearing; the method is characterized in that:
N channel groups (2) with the same layout are uniformly arranged on the plug body (1) in the circumferential direction in the central area;
the channel group (2) comprises a plurality of independent channels (21);
The arrangement axis of the channel group (2) and the axis of the plug body (1) are eccentrically arranged; the N channel groups (2) are uniformly arranged along the circumferential direction of the plug body (1), so that the positions of the channels (21) after the plug body (1) rotates correspond to the positions of the corresponding reactor core components (3), and the rotation angle of the plug body (1) is an integer multiple of 360 degrees/N;
A positioning channel (22) is arranged in the central area of the plug body (1), and the axis of the positioning channel (22) coincides with the arrangement axis of the channel group (2);
The arrangement axes of the channel groups (2) are arranged in an allowable range, and the maximum allowable offset of the positions of the channels (21) and the corresponding core assemblies (3) is After the plug body (1) rotates for 360 degrees/N integer times to meet the design position, the channel (21) can be in butt joint with the reactor core assembly (3), and the offset is required to meet/>。
2. The eccentric reactor refueling device according to claim 1, wherein the eccentric amount of the arrangement axis of the channel group (2) and the axis of the plug body (1) is e, and the movement locus of the lower end point of the arrangement axis of the channel group (2) is a circle taking the center of the plug body (1) as the center and e as the radius by rotating the plug body (1); the minimum adjustment of the position of the channel (21) along the eccentric opposite direction isThe allowable offset of the channel (21) is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011079947.8A CN112201374B (en) | 2020-10-10 | 2020-10-10 | Eccentric reactor reloading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011079947.8A CN112201374B (en) | 2020-10-10 | 2020-10-10 | Eccentric reactor reloading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112201374A CN112201374A (en) | 2021-01-08 |
| CN112201374B true CN112201374B (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011079947.8A Active CN112201374B (en) | 2020-10-10 | 2020-10-10 | Eccentric reactor reloading device |
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| Country | Link |
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| CN (1) | CN112201374B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1366621A (en) * | 1972-01-20 | 1974-09-11 | Commissariat Energie Atomique | Device for permitting or facilitating the handling of the elements which form a nuclear reactor core |
| DE4226228A1 (en) * | 1991-08-07 | 1993-02-18 | Doryokuro Kakunenryo | Fuelling of nuclear esp. fast breeder reactor - allowing redn. of reactor vessel dia. as loading operation can be effected at any position within core using large and small revolving stoppers and levelling arm |
| JPH0540196A (en) * | 1991-08-07 | 1993-02-19 | Power Reactor & Nuclear Fuel Dev Corp | Refueling method for reactor |
| RU2272251C1 (en) * | 2004-07-12 | 2006-03-20 | Федеральное государственное унитарное предприятие "Опытное конструкторское бюро машиностроения имени И.И. Африкантова" (ФГУП "ОКБМ") | Method for refueling liquid-metal cooled reactor |
| CN106531257A (en) * | 2016-12-29 | 2017-03-22 | 中国科学院合肥物质科学研究院 | In-reactor material changing system of reactor |
-
2020
- 2020-10-10 CN CN202011079947.8A patent/CN112201374B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1366621A (en) * | 1972-01-20 | 1974-09-11 | Commissariat Energie Atomique | Device for permitting or facilitating the handling of the elements which form a nuclear reactor core |
| US3841964A (en) * | 1972-01-20 | 1974-10-15 | Commissariat Energie Atomique | Device for handling the elements of a nuclear reactor core |
| DE4226228A1 (en) * | 1991-08-07 | 1993-02-18 | Doryokuro Kakunenryo | Fuelling of nuclear esp. fast breeder reactor - allowing redn. of reactor vessel dia. as loading operation can be effected at any position within core using large and small revolving stoppers and levelling arm |
| JPH0540196A (en) * | 1991-08-07 | 1993-02-19 | Power Reactor & Nuclear Fuel Dev Corp | Refueling method for reactor |
| JPH0540197A (en) * | 1991-08-07 | 1993-02-19 | Power Reactor & Nuclear Fuel Dev Corp | Refueling method for reactor |
| RU2272251C1 (en) * | 2004-07-12 | 2006-03-20 | Федеральное государственное унитарное предприятие "Опытное конструкторское бюро машиностроения имени И.И. Африкантова" (ФГУП "ОКБМ") | Method for refueling liquid-metal cooled reactor |
| CN106531257A (en) * | 2016-12-29 | 2017-03-22 | 中国科学院合肥物质科学研究院 | In-reactor material changing system of reactor |
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| CN112201374A (en) | 2021-01-08 |
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