CN111724923A - Support system, support device and reactor refueling method - Google Patents
Support system, support device and reactor refueling method Download PDFInfo
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- CN111724923A CN111724923A CN202010577549.2A CN202010577549A CN111724923A CN 111724923 A CN111724923 A CN 111724923A CN 202010577549 A CN202010577549 A CN 202010577549A CN 111724923 A CN111724923 A CN 111724923A
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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
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
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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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Abstract
A support system comprising a plurality of support groups, each support group comprising a plurality of support devices, wherein the support devices comprise: the supporting arm, the connecting piece and the fixing piece are arranged on the wall body; the first end of the support arm is rotatably connected to the mount by the connector, such that the support arm has: a first position with a second end adjacent the reactor body and a second position with a second end adjacent the wall, the support arm being movable between the first and second positions and being retainable in either the first or second positions. The support system provided by the embodiment of the invention can disconnect the support of the reactor body under the condition of not completely disassembling the support device, and provides an operation space for reactor refueling and the like.
Description
Technical Field
The invention belongs to the technical field of nuclear reactors, and particularly relates to a support system and a support device for a nuclear reactor and a refueling method for the reactor.
Background
In order to guarantee the reliability and safety during the operation of the reactor, it is necessary to provide the body of the reactor, for example: the containment, the containment top cover, the core barrel and the like are used for seismic support, and particularly for a reactor which is a pool reactor and has a large length-diameter ratio and is located in deep water, not only support in all circumferential directions but also support in all axial heights are provided, which means that a support system needs to comprise more support devices.
The strutting arrangement of prior art needs the manual work to dismantle usually and installs again, leads to when the reactor carries out the operation that needs remove the reactor body such as reloading or maintenance, need just can go on after dismantling strutting arrangement earlier, and the operation is very inconvenient, especially to the pond formula reactor, still need just can carry out strutting arrangement's dismantlement after emptying pond water earlier.
Disclosure of Invention
In view of the above, the present invention has been made to provide a support system and a support device for a reactor that overcome or at least partially solve the above problems.
According to an aspect of the present invention, there is provided a support system provided between a reactor body and a wall built along a circumferential direction of the reactor body, for supporting the reactor body, including a plurality of support groups provided at the wall along the circumferential direction of the reactor body, each support group including a plurality of support devices provided along an axial direction of the reactor body, wherein each support device includes: the supporting arm, the connecting piece and the fixing piece are arranged on the wall body; the first end of the support arm is rotatably connected to the mount by the connector, such that the support arm has: a first position with a second end adjacent the reactor body and a second position with a second end adjacent the wall, the support arm being movable between the first and second positions and being retainable in either the first or second positions.
Optionally, the second end of the support arm is arranged to be attachable to the reactor body when the support arm is in the first position and to cooperate with a stop formation formed on the reactor body to limit movement of the support arm in at least part of the direction
Optionally, the fixing member is configured to include: the embedded part is arranged in the wall body; and the first end of the fixed arm is connected to the embedded part, the second end of the fixed arm is connected to the connecting piece, and the fixed arm is arranged to be perpendicular to the plane where the embedded part is located.
Optionally, the support arm is substantially in line with the stationary arm when in the first position.
Optionally, the connector is arranged to enable the support arm to move in a vertical plane.
Optionally, the support system further comprises a drive means for moving the support arm of the support means and capable of holding the support arm in the second position.
Optionally, a plurality of support means in each support group are arranged to share the drive means.
Optionally, the drive device comprises: a plurality of pull cords respectively connected to the second ends of the support arms; a winding mechanism configured to wind or unwind the pull line to move the support arm and to secure the pull line to maintain the support arm in the second position.
Optionally, the hoisting mechanism is disposed on the wall body and at the uppermost position in the axial direction of the support group on which the hoisting mechanism is disposed.
Optionally, the driving device further comprises: the first limiting piece prevents the traction rope from falling off; at least one second stop prevents the pull cord from tangling.
According to another aspect of the present invention, there is also provided a reactor refueling method, comprising: the support arm is disconnected with the reactor body, and the support arm is moved to a second position and is kept; dismantling the reactor body; changing materials; assembling the reactor body; moving the support arm to a first position and restoring the connection of the support arm to the reactor body.
Optionally, when the support arm is moved to the second position, the support arm located relatively above the reactor body in the axial direction is moved first; when the supporting arm is moved to the first position, the supporting arm which is positioned at the lower part of the reactor body in the axial direction relatively is moved.
According to another aspect of the present invention, there is also provided a support device provided between a reactor body and a wall built along a circumferential direction of the reactor body, the support device including: a support arm, a connector and a mount, wherein the support arm is configured to support the reactor body; the connector rotatably connects the support arm to the mount such that the reactor body can be disconnected from the support of the support arm; the fixture is configured as described above, and the support arm is substantially aligned with the stationary arm when supporting the reactor body.
Optionally, the support arm is connectable to the reactor body and cooperates with a stop formation formed on the reactor body to limit movement of the support arm in at least part of the direction.
Optionally, the connector is arranged to enable movement of the support arm in a vertical plane.
According to the support system and the support device provided by the embodiment of the invention, the support for the reactor body can be disconnected under the condition that the support device is not completely detached, and an operation space is provided for reactor refueling and the like, so that the operation of refueling and the like of the reactor is more convenient, and when the support system and the support device are applied to a pool type reactor, the support for the reactor body can be directly disconnected under water, and the operation of emptying pool water is avoided. According to the material changing method provided by the embodiment of the invention, the steps of disassembling and re-assembling the supporting system are omitted, and the method is simpler and more convenient.
Drawings
FIG. 1 is a schematic view of a support system with a support arm in a first position according to an embodiment of the present invention;
FIG. 2 is a schematic view of a support system with a support arm in a second position according to an embodiment of the present invention;
FIG. 3 is a schematic view of a connection location of a support arm and a reactor body according to an embodiment of the invention;
FIG. 4 is a schematic view of a support device with a support arm in a first position according to an embodiment of the invention;
fig. 5 is a schematic view of the support device with the support arm in the second position according to the embodiment of the invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details.
First, according to an embodiment of the present invention, there is provided a support system, referring to fig. 1 and 2, provided in a reactor body 100 and a wall 200 built around the reactor body 100, for supporting the reactor body 100 to prevent the reactor body 100 from shaking in the event of an earthquake or the like. The reactor may be, for example, a pool reactor, a large reactor for a nuclear power plant, etc., and correspondingly, the wall 200 may be a pool wall or a concrete reactor cavity, etc. The support system is arranged to include a plurality of support groups 300 arranged along the circumference of the reactor body 100, each support group 300 further includes a plurality of support devices 10 arranged on the wall 200 along the axial direction of the reactor body 100, so that the support system provides multi-directional support for the reactor body 100, and particularly for a pool reactor with a reactor axial length much greater than a radial length, the plurality of support devices 10 distributed along the axial direction provide better anti-seismic support for the pool reactor.
The supporting device 10 is configured to include a supporting arm 11, a connecting member 12, and a fixing member 13, the fixing member 13 is disposed on the wall 200, and a first end of the supporting arm 11 is rotatably connected to the fixing member 13 through the connecting member 12 so that the supporting arm 11 can move. Further, the support arm 11 has a first position as shown in fig. 1, and when the support arm 11 is in the first position, and a second end thereof adjacent the reactor body 100 to provide support for the reactor body 100, the support arm 11 also having a second position as shown in figure 2, when the support arm 11 is in the second position, the second end of which is close to the wall 200, so that the support device 10 no longer supports the reactor body 100 and the space around the reactor body 100 is made available, so that operations such as a reactor dismantling device, a refueling device, etc. can be performed, so that the support device 10 does not need to be removed during the disassembly and refueling of the reactor body 100, and further, when the embodiment of the present invention is applied to a pool reactor, can directly remove the support arm 11 to the second position without emptying pond water, then carry out operations such as reactor reloading for it is more convenient to operate. It will be understood by those skilled in the art that the second position of the support arm 11 is not limited to the embodiment shown in fig. 2, for example, the support arm 11 can move obliquely upward, in a horizontal plane, or even downward, so long as a space for performing corresponding operations is available, the corresponding functions can be achieved, and further, the skilled in the art can use various ways to perform the movement of the support arm 11.
In some embodiments, the support arm 11 may be configured as an "i" beam having sufficient strength and rigidity to improve the stability of the support.
Further, in some embodiments, the support arm 11 can be coupled to the reactor body 100 when in the first position and cooperate with a limiting structure formed on the reactor body 100 to limit movement of the support arm 11 in at least a portion of the direction, thereby increasing the stability of the support device 10 to the reactor body 100. Specifically, as shown in fig. 3, the limiting structure may be a flange on the reactor body 100, and the supporting arm 11 may be configured to be connected to the flange on the reactor body 100 by a plug-type snap fit, so that the supporting arm 11 may not shake randomly when supporting the reactor body 100 at the first position, and when moving the supporting arm 11 to the second position, the supporting arm 11 may be disconnected from the reactor body 100 by applying a force to a predetermined direction. In some embodiments, the radial contact surface between the support arm 11 and the flange on the reactor body 100 may be designed as a sloped slope, which prevents the support device 10 from being detached from the reactor body due to vibration, further increasing the stability of the support. It will be appreciated that the engagement of the support arm 11 with the stop formation is not limited to the above-described manner and that other similar structures, such as a snap-lock arrangement, may be used by those skilled in the art to achieve the same function.
In some embodiments, as shown in fig. 4-5, the fixing member 13 is configured to include an embedment 131 and a fixing arm 132. The embedded part 131 is disposed in the wall 200, so that the fixing part 13 can be more stably fixed to the wall 200. The first end of the fixed arm 132 is connected to the embedded part 131, the second end is connected to the connecting piece 12, and the fixed arm 132 is arranged perpendicular to the plane of the fixed arm 131, so that more stable support can be provided. It is understood that the fixed arm 132 can be coupled to the embedment 131 by various means such as bolting, welding, and the like. Further, in some embodiments, the supporting arm 11 is substantially aligned with the fixed arm 132 when located at the first position, and since the fixed arm 132 is perpendicular to the plane of the embedded part 131, that is, when the supporting device 10 is shaken, the supporting force provided by the whole supporting device 10 will not be substantially dispersed to other directions, thereby increasing the stability of the supporting. In some embodiments, the fixed arm 132 is bolted to the embedment 131. In some embodiments, in order to better fix the embedded parts 131 to the wall 200, a steel lining may be added to the wall 200. In some embodiments, the securing arm 132 may also be provided as an "i" beam having sufficient strength and rigidity.
Further, in some embodiments, the connecting member 12 is configured to enable the supporting arm 11 to move in a vertical plane, for example, the connecting member 12 is configured as a pin structure as shown in fig. 4 and 5, so that the structure of the supporting device 10 is simplified, and the supporting arm 11 moves in the vertical plane, so that a larger operation space can be provided for material changing, repairing and the like.
In some embodiments, to facilitate the movement of the support arm 11, the support system further comprises a driving device 400, wherein the driving device 400 can drive the support arm 11 to move and can maintain the support arm 11 at the second position. To simplify the structure of the support system, in some embodiments, a plurality of support devices 10 in the same support group 300 are arranged to share a single drive mechanism.
In some embodiments, as shown in fig. 1 and 2, the driving device 400 includes a plurality of pulling ropes 410, each pulling rope 410 is connected to one of the support arms 11 of the support device 10, and can be connected to the pulling rope 410 by providing a hanging hole or the like on the support arm 11, and in order to move the support arm 11 more conveniently, the pulling rope 410 is arranged to be connected to an end of the support arm 11 close to the reactor body, i.e., an end far from the connecting member 12. The driving device 400 further includes a winding mechanism 420, and the winding mechanism 420 can wind or unwind the traction rope 410 and can fix the traction rope, thereby moving and position-maintaining the support arm 11 by controlling the length of the unwinding of the traction rope 410. The winding mechanism 420 can control a plurality of pulling ropes 410, so that the movement of the supporting arm 11 can be completed only by arranging one winding mechanism 420 in one supporting group 300, and the structure of the supporting system is simplified. Further, in order to facilitate the control of the winding mechanism 420, the winding mechanism 420 is disposed on the wall 200 and at the top of the corresponding support group 300.
In some embodiments, as shown in fig. 1 and fig. 2, the driving device 400 further includes at least one first limiting member 430 and at least one second limiting member 440, and the first limiting member 430 may be configured to be an anti-unhooking structure, for example, to prevent the pulling rope 410 from being accidentally dropped due to misoperation or the like. The second limiting member 440 may be configured as a fixed pulley or the like to prevent the traction ropes 410 from being entangled with each other, and further, in some embodiments, a plurality of second limiting members 440 may be provided, which are respectively disposed above the corresponding supporting devices 10, as shown in fig. 1, so that the traction rope 410 corresponding to the lowermost supporting device 10 will pass through all the second limiting members 440 above the lowermost supporting device, which provides a better entanglement preventing effect.
The embodiment of the invention also provides a reactor refueling method based on the support system, which specifically comprises the following steps:
s1, contacting the connection of the support arm 11 to the reactor body 100, moving the support arm 11 to the second position and holding it.
S2, the reactor body 100 is dismantled.
And S3, changing materials.
S4, assembling the reactor body 100.
S5, moving the support arm 11 to the first position and restoring the connection of the support arm 11 to the reactor body.
The reactor refueling method only needs to move the supporting arm 11, so that compared with the prior art, the process of dismantling and reinstalling the supporting device is saved, and the reactor refueling method is simpler and more convenient.
Further, in some embodiments, when moving the support arm 11 to the second position, the support arm 11 located axially above the reactor body 100 is moved first, and when moving the support arm 11 to the first position, the support arm 11 located axially below the reactor body 100 is moved first, thereby further preventing the pull cords 420 of the plurality of support arms 11 from being entangled with each other.
There is also provided according to an embodiment of the present invention a support device 10, as described in any one of the above, the support device 10 being disposed between a reactor body 100 and a wall 200 built along a circumferential direction of the reactor body 100, the support device 10 including: a support arm 11, a connecting member 12 and a fixing member 13, wherein the support arm 11 is provided to support the reactor body 100; the connecting piece 12 rotatably connects the support arm 11 to the fixing piece 13 so that the reactor body 100 can be separated from the support of the support arm 11; the fixing member 13 includes the embedment member 131 and the fixing arm 132 as described above, and the support arm 11 is substantially in line with the fixing arm 132 when supporting the reactor body 100.
In some embodiments, as mentioned above, the support arm 11 can be connected to the reactor body 100 and cooperate with a stop structure formed on the reactor body 100 to limit movement of the support arm 11 in at least a portion of the direction.
In some embodiments, the connection 12 is configured to enable the support arm 11 to move in a vertical plane, such as a pivot pin or the like.
In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.
Claims (15)
1. A support system provided between a reactor body (100) and a wall (200) built along a circumferential direction of the reactor body (100) for supporting the reactor body (100), comprising a plurality of support groups (300) provided at the wall (200) along the circumferential direction of the reactor body (100), each support group (300) comprising a plurality of support devices (10) provided along an axial direction of the reactor body (100), wherein each support device (10) comprises:
a supporting arm (11), a connecting piece (12) and a fixing piece (13),
the fixing piece (13) is arranged on the wall body (200);
the first end of the support arm (11) is rotatably connected to the mount (13) by means of the connection (12), so that the support arm (11) has:
a second end near a first position of the reactor body (100), an
A second end proximate to a second location of the wall (200),
the support arm (11) is movable between the first position and the second position and can be held in either the first position or the second position.
2. The support system of claim 1, wherein the second end of the support arm (11) is arranged to be positioned
Is connectable to the reactor body (100) when the support arm (11) is in the first position and cooperates with a stop formation formed on the reactor body (100) to limit movement of the support arm (11) in at least part of the direction.
3. The support system according to claim 1, wherein the fixing member (13) is provided to comprise:
an embedded part (131) arranged in the wall body (200);
a fixed arm (132), the fixed arm (132) having a first end connected to the embedment (131) and a second end connected to the attachment member (12),
the fixed arm (132) is arranged to be perpendicular to the plane of the embedded part (131).
4. The support system of claim 3, wherein the support arm (11) is substantially in line with the fixed arm (132) when in the first position.
5. The support system according to claim 1, wherein the connection (12) is arranged to enable the support arm (11) to move in a vertical plane.
6. The support system according to claim 1, further comprising a drive device (400) for moving the support arm (11) of the support device (10), and
the support arm (11) can be held in the second position.
7. The support system according to claim 6, wherein a plurality of support devices (10) in each support group (300) are provided sharing the drive device (400).
8. The support system of claim 7, wherein the drive means (400) comprises:
a plurality of pull cords (410) respectively connected to the second ends of the support arms (11);
a winding mechanism (420) arranged to wind up or pay out the traction rope (410) to move the support arm (11), and
the pull cord (410) can be secured to maintain the support arm (11) in the second position.
9. The support system of claim 8, wherein the hoisting mechanism (410) is arranged at the wall (200) and axially uppermost of the support groups (300) in which it is arranged.
10. The support system of claim 8, wherein the drive arrangement (400) further comprises:
at least one first stopper (430) for preventing the pull rope (410) from falling off;
at least one second stop (440) to prevent the pull-cord (410) from tangling.
11. A reactor refueling method comprising:
releasing the connection between the support arm (11) and the reactor body (100), and moving the support arm (11) to the second position and keeping the second position;
dismantling the reactor body (100);
changing materials;
assembling the reactor body (100);
-moving the support arm (11) to a first position and restoring the connection of the support arm (11) to the reactor body (100).
12. The method of reloading as in claim 11,
when the supporting arm (11) is moved to the second position, the supporting arm (11) which is positioned above the reactor body (100) in the axial direction is moved;
when the supporting arm (11) is moved to the first position, the supporting arm (11) which is relatively positioned below the reactor body (100) in the axial direction is moved first.
13. A support device (10) provided between a reactor body (100) and a wall (200) built along a circumferential direction of the reactor body (100), the support device (10) comprising:
a support arm (11), a connecting piece (12) and a fixing piece (13), wherein
The support arm (11) is arranged to support the reactor body (100);
the connecting piece (12) rotatably connects the supporting arm (11) to the fixing piece (13) so that the reactor body (100) can be separated from the supporting of the supporting arm (11);
the fixing element (13) is arranged as a fixing element (13) according to claim 3, and
the support arm (11) is substantially in line with the fixed arm (132) when supporting the reactor body (100).
14. The support device (10) of claim 13, wherein the support arm (11) is connectable to the reactor body (100) and cooperates with a stop formation formed on the reactor body (100) to limit movement of the support arm (11) in at least part of the direction.
15. The support device (10) according to claim 13, wherein the connection (12) is arranged to enable movement of the support arm (11) in a vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010577549.2A CN111724923B (en) | 2020-06-23 | 2020-06-23 | Support system, support device and reactor refueling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010577549.2A CN111724923B (en) | 2020-06-23 | 2020-06-23 | Support system, support device and reactor refueling method |
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| CN111724923A true CN111724923A (en) | 2020-09-29 |
| CN111724923B CN111724923B (en) | 2022-10-28 |
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| EP0344051A1 (en) * | 1988-05-24 | 1989-11-29 | Framatome | Nuclear fuel assembly receiving and dismantling cell |
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| CN111724923B (en) | 2022-10-28 |
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