CN114141395B - Seal shell device and control rod driving mechanism - Google Patents
Seal shell device and control rod driving mechanism Download PDFInfo
- Publication number
- CN114141395B CN114141395B CN202111437574.1A CN202111437574A CN114141395B CN 114141395 B CN114141395 B CN 114141395B CN 202111437574 A CN202111437574 A CN 202111437574A CN 114141395 B CN114141395 B CN 114141395B
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- shell
- magnetism isolating
- coil
- groove
- housing
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/12—Means for moving control elements to desired position
- G21C7/14—Mechanical drive arrangements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/028—Seals, e.g. for pressure vessels or containment vessels
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/08—Vessels characterised by the material; Selection of materials for pressure vessels
- G21C13/087—Metallic vessels
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of 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
Abstract
The application discloses seal shell device and control rod drive mechanism relates to the relevant technical field of nuclear power station for solve current control rod drive mechanism's bulky and problem with high costs. The sealing shell device comprises a sealing shell body and a magnetic isolating ring assembly, wherein the sealing shell body comprises a shell made of martensitic stainless steel materials, and an austenitic stainless steel section and a 690 alloy section which are respectively welded at two ends of the shell, a through hole penetrating through the shell is formed in the sealing shell body, and the through hole is used for mounting a claw part; the coil is sleeved outside the shell, and the magnetic force generated when the coil is electrified can drive the claw part to move; the magnetic isolation ring component is sleeved outside the shell and positioned between the coil and the shell.
Description
Technical Field
The application relates to the technical field related to nuclear power stations, in particular to a seal shell device and a control rod driving mechanism.
Background
A Control Rod Drive Mechanism (CRDM) is a vertically stepped magnetic lifting device mounted on the top head of a reactor pressure vessel. The CRDM basically includes a housing-like sealed housing arrangement, a finger member, a coil member and a drive rod member. The sealing shell device is arranged on a top cover tube seat of the pressure vessel and is a vital component of the CRDM, the inside of the sealing shell device provides an installation and action space for a claw component and a driving rod component, and the outside of the sealing shell device provides support for a coil component.
The containment vessel serves as a primary pressure boundary and must be maintained for integrity and to ensure that there is no leakage of coolant. The coil component is a power source of the CRDM, the hook component is an action executing mechanism of the CRDM, and through the conduction and discharge of the coil component, the corresponding magnetic pole armature in the hook component is magnetized/demagnetized, so that the attraction/opening of the magnetic pole armature is realized, and the action of the CRDM is realized.
However, in the prior art, the capsule device is made of austenitic stainless steel, because the austenitic stainless steel is not magnetic conductive, the magnetic resistance between the claw member and the coil member installed inside and outside the capsule device is large, when the coil member is energized, the current value in the coil member is large, so the heat generation of the coil member is large, for the coil member to be safe and reliable in the use process, a coil with a large diameter needs to be selected, the diameter of the coil is large, and further the volume and the cost of the control rod driving mechanism are increased.
Disclosure of Invention
The application provides a seal shell device and control rod drive mechanism to solve current control rod drive mechanism's bulky and problem with high costs.
In order to achieve the above object, in one aspect, the present application provides a capsule device including a capsule body and a magnetic isolating ring assembly, the capsule body includes a shell made of martensitic stainless steel material, a through hole penetrating through the shell is formed in the capsule body, the through hole is used for installing a claw member, a coil is installed outside the shell, and a magnetic force generated when the coil is energized can drive the claw member to move; the magnetic isolation ring component is sleeved outside the shell and positioned between the coil and the shell.
In some embodiments of the present application, the capsule body further comprises a first connection end connected with one end of the housing and a second connection end for connecting the housing and the stroke sleeve; the second connecting end is connected with the other end of the shell, and the second connecting end is used for connecting the shell and the top cover.
In some embodiments of the present application, the first connection end portion is made of an austenitic stainless steel material, the second connection end portion is made of an alloy 690 material, the first connection end portion is welded to one end of the housing, and the second connection end portion is welded to the other end of the housing.
In some embodiments of the present application, one end of the through hole extends into the first connection end portion, and the other end of the through hole extends into the second connection end portion.
In some embodiments of the present application, an annular receiving groove is formed in the housing, and the magnetism isolating ring assembly is installed in the annular receiving groove.
In some embodiments of the present application, a length of the coil in the axial direction is greater than a length of the annular accommodating groove in the axial direction, and both ends of the coil are located at an axially outer side of the annular accommodating groove.
In some embodiments of the present application, the diameter D1 of the through hole and the outer diameter D2 of the annular receiving groove satisfy: D2-D1 is more than or equal to 12mm.
In some embodiments of the present application, the magnetism isolating ring assembly includes three magnetism isolating rings sequentially sleeved along an axial direction of the housing, each magnetism isolating ring includes a first magnetism isolating part and a second magnetism isolating part, which are semi-annular and are disposed around the housing, and the first magnetism isolating part and the second magnetism isolating part are fixedly connected.
In some embodiments of the present application, the first and second flux barriers are each made of an austenitic stainless steel material.
In some embodiments of the present application, a first fixing portion is disposed on the first magnetism isolating portion, a second fixing portion is disposed on the second magnetism isolating portion, and the first magnetism isolating portion and the second magnetism isolating portion are connected through the first fixing portion and the second fixing portion.
In some embodiments of the present application, the first fixing portion is a semi-ring-shaped first groove, the semi-ring-shaped second fixing portion is a second groove, and the first groove and the second groove are spliced to form an annular groove.
In some embodiments of the present application, the sealing case device further includes a connecting member, and the connecting member passes through the first fixing portion and the second fixing portion to fixedly connect the first magnetic isolating portion and the second magnetic isolating portion.
In another aspect, the present application further provides a control rod drive mechanism including the above seal housing arrangement.
Compared with the prior art, the sealing shell body in the sealing shell device comprises the shell made of the martensitic stainless steel material, the martensitic stainless steel can conduct magnetism, and the magnetic force generated by the coil sleeved outside the shell is directly transmitted to the claw part installed in the through hole through the shell made of the magnetic conducting material, so that the power of the coil is reduced, the size of the coil is reduced, the weight and the cost of the coil are reduced, and the size, the weight and the cost of the sealing shell body are reduced.
In addition, the seal shell device in the control rod drive mechanism provided by the application and the seal shell device adopt the same structure, so that the control rod drive mechanism in the application can solve the technical problems which are solved by the seal shell device, and can achieve the same technical effects as the seal shell device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the construction of a containment body in the practice of the present application;
FIG. 2 is a schematic structural view of a magnetic isolation ring assembly sleeved on a housing in the embodiment of the present application;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic structural diagram of a coil sleeved on a housing in the application.
The main reference numbers in the drawings accompanying the present specification are as follows:
1-sealing the shell body; 11-a housing; 111-a via; 112-a ring-shaped accommodating groove; 1121-a first annular receiving groove; 1122-a second annular receiving groove; 1123-a third annular receiving groove; 12-a first connecting end; 13-a second connection end; 2-a coil; 21-lifting the coil; 22-moving coil; 23-a stationary coil; 3-a magnetic isolating ring component; 31-a first magnetism isolating ring; 32-a second magnetism isolating ring; 33-a third magnetism isolating ring; 4-a first dissimilar metal weld; 5-a second dissimilar metal weld; 200-hook member.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.
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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
The present application provides a seal housing apparatus and a control rod drive mechanism, which will be described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described in detail in a certain embodiment.
Referring to fig. 1 to 4, the sealing case device provided by the present application includes a sealing case body 1, a coil 2 and a magnetism isolating ring assembly 3, where the sealing case body 1 includes a case 11 made of martensitic stainless steel material, a through hole 111 penetrating through the case 11 is formed in the sealing case body 1, the through hole 111 is used for mounting a claw member 200, the coil 2 is mounted outside the case 11, and magnetic force generated when the coil 2 is energized can drive the claw member 200 to move; the magnetism isolating ring component 3 is sleeved outside the shell 11 and is positioned between the coil 2 and the shell 11.
Compared with the prior art, the seal housing body 1 in the seal housing device in the application includes the housing 11 made of martensitic stainless steel material, since the martensitic stainless steel itself can conduct magnetism, the magnetic force generated by the coil 2 sleeved outside the housing 11 is directly transmitted to the claw member 200 installed in the through hole 111 via the housing 11 made of magnetic conducting material, so that the power reduction of the coil 2 will be reduced, the size of the coil 2 is favorably reduced, and the weight and cost of the coil 2 are reduced, thereby reducing the volume, weight and cost of the seal housing body 1.
In some embodiments of the present application, the capsule body 1 further comprises a first connection end portion 12 and a second connection end portion 13, the first connection end portion 12 is connected with one end of the shell 11, and the first connection end portion 12 is used for connecting the shell 11 and the stroke sleeve; the second connecting end 13 is connected to the other end of the housing 11, and the second connecting end 13 is used for connecting the housing 11 and the top cover.
It can be understood that the present application divides the seal housing body 1 into three sections in the axial direction, namely, the housing 11, the first connection end 12 and the second connection end 13, wherein the housing 11 can transmit the magnetic force generated by the coil 2 to the claw member 200 to drive the claw member 200 to move.
Generally, the conventional stroke sleeve is made of an austenitic stainless steel material, and the welding seam at the joint of the stroke sleeve and the seal housing body 1 is an "Ω" welding seam, which has a high requirement on the welding level of a welder in order to ensure the sealing performance of the weld, and the welding process is complicated, and meanwhile, the "Ω" welding seam of a dissimilar metal between the housing 11 made of the martensitic stainless steel material and the stroke sleeve made of the austenitic stainless steel material makes the original complicated process more difficult, so in the present application, the first connecting end portion 12 is made of the austenitic stainless steel material, and the first connecting end portion 12 is welded to the stroke sleeve, so that the same metal welding seam between the housing 11 and the stroke sleeve is ensured.
In order to ensure all aspects of welding, stress corrosion and the like between the second connecting end portion 13 and the top cover, the second connecting end portion 13 is made of an alloy 690 material, and the second connecting end portion 13 and the top cover are welded.
Like this, the welding department of seal shell body 1 and stroke sleeve pipe adopts the same material to make to guarantee the leakproofness and the reliability of connecting between seal shell body 1 and the stroke sleeve pipe. The second connecting end 13 connecting the capsule body 1 and the top cover is made of an alloy 690 material. A first dissimilar metal weld 4 is formed between the first connection end 12 and the housing 11, and a second dissimilar metal weld 5 is formed between the housing 11 and the second connection end 13.
If the first dissimilar metal welding line 4 and the second dissimilar metal welding line 5 are located on the sealed case body 1, the sealing inspection and the nondestructive inspection of the welded lines after welding are simpler and more convenient than those located at the end portions of the sealed case device (i.e., one end portion connected to the stroke sleeve and the other end portion connected to the top cover).
Based on the above embodiment, one end of the through hole 111 extends into the first connection end portion 12, and the other end of the through hole 111 extends into the second connection end portion 13, so that a portion of the claw member 200 can be located in the first connection end portion 12 and/or the second connection end portion 13, and the length of the seal housing body 1 does not need to be designed to be long, which is beneficial to reducing the length dimension of the seal housing body 1.
In some embodiments of the present application, an annular receiving groove 112 is formed in the housing 11, and the magnetism isolating ring assembly 3 is installed in the annular receiving groove 112, on one hand, the annular receiving groove 112 can accommodate the magnetism isolating ring assembly 3, so as to prevent the magnetism isolating ring assembly 3 from moving on the shaft of the housing 11; on the other hand, the structural strength of the housing 11 can be improved by providing the magnetism isolating ring assembly 3.
In some embodiments of the present application, the length of the coil 2 in the axial direction is greater than the length of the annular receiving groove 112 in the axial direction, and both ends of the coil 2 are located at the axial outer side of the annular receiving groove 112.
For example, the coil 2 includes a lifting coil 21, a moving coil 22 and a fixed coil 23, the annular receiving groove 112 includes a first annular receiving groove 1121, a second annular receiving groove 1122 and a third annular receiving groove 1123, the magnetism isolating ring assembly 3 includes three magnetism isolating rings (i.e., a first magnetism isolating ring 31, a second magnetism isolating ring 32 and a third magnetism isolating ring 33), illustratively, the length of the lifting coil 21 in the axial direction is greater than the length of the first annular receiving groove 1121, and both ends of the lifting coil 21 are located at the axial outer side of the first annular receiving groove 1121; the length of the moving coil 22 in the axial direction is greater than the length of the second annular accommodation groove 1122 in the axial direction, and both ends of the moving coil 22 are located at the axial outer sides of the second annular accommodation groove 1122; the length of the fixed coil 23 in the axial direction is greater than the length of the third annular accommodation groove 1123 in the axial direction, and both ends of the fixed coil 23 are located axially outside the third annular accommodation groove 1123.
In this way, the movement of the two hook members of the hook member 200 corresponding thereto can be realized by one coil 2, thereby reducing the number of coils 2 while being easier to control.
With continued reference to fig. 1, the diameter D1 of the through hole 111 and the outer diameter D2 of the annular receiving groove 112 satisfy: D2-D1 is more than or equal to 12mm, so that the annular accommodating groove 112 can be ensured to play a certain limiting role on the three magnetism isolating rings in the magnetism isolating ring assembly 3 on the basis of ensuring that the shell 11 has enough strength. Meanwhile, the three magnetism isolating rings in the magnetism isolating ring component 3 can also provide a supporting effect for the coil 2.
Similarly, the outer diameter D3 of the housing 11 at the position where the annular receiving groove 112 is not provided and the diameter D1 of the through hole 111 satisfy: D3-D1 is more than or equal to 30mm.
In order to facilitate the sleeving of the magnetism isolating ring assembly 3 outside the casing 11, the magnetism isolating ring assembly 3 in the present application includes three magnetism isolating rings (i.e., a first magnetism isolating ring 31, a second magnetism isolating ring 32, and a third magnetism isolating ring 33) sequentially sleeved along the axial direction of the casing 11, each of the magnetism isolating rings includes a first magnetism isolating portion and a second magnetism isolating portion surrounding the casing 11, and the first magnetism isolating portion is fixedly connected with the second magnetism isolating portion.
It should be noted that the annular receiving groove 112 includes a first annular receiving groove 1121, a second annular receiving groove 1122 and a third annular receiving groove 1123, the first magnetism isolating ring 31 is disposed in the first annular receiving groove 1121, the second magnetism isolating ring 32 is disposed in the second annular receiving groove 1122, and the third magnetism isolating ring 33 is disposed in the third annular receiving groove 1123.
The first magnetism isolating part and the second magnetism isolating part are surrounded to form a magnetism isolating ring, and the axial length of each magnetism isolating ring component 3 and the axial length of each annular accommodating groove 112 can be adjusted adaptively according to the corresponding claw part 200.
In some embodiments of the present application, the first magnetism isolating part and the second magnetism isolating part are both made of austenitic stainless steel materials, which are conveniently purchased in the market, and the magnetism isolating effect of the austenitic stainless steel materials is better.
Or the first magnetic isolating part and the second magnetic isolating part are made of non-magnetic alloy and non-magnetic metal ceramic materials.
In some embodiments of the present application, a first fixing portion is disposed on the first magnetism isolating portion, a second fixing portion is disposed on the second magnetism isolating portion, and the first magnetism isolating portion and the second magnetism isolating portion are connected through the first fixing portion and the second fixing portion, so that the first magnetism isolating portion and the second magnetism isolating portion are connected.
In some embodiments of the present application, the first fixing portion is a semi-circular first groove, the second fixing portion is a semi-circular second groove, and the first groove and the second groove are spliced to form an annular groove, so that the first fixing portion and the second fixing portion have a simpler structure.
In some embodiments of the present application, the seal housing body 1 further includes a connecting member 6, and the connecting member 6 is configured to fixedly connect the first magnetic-isolating portion and the second magnetic-isolating portion through the first fixing portion and the second fixing portion, for example, the connecting member 6 may be a metal rolled strip or a steel wire. The connection of first magnetism portion and second magnetism portion that separates is guaranteed to above-mentioned setting of this application is more simple and convenient.
In another aspect, the present application further provides a control rod drive mechanism including the above seal housing arrangement.
In addition, the sealed shell device in the control rod driving mechanism provided by the application and the sealed shell device adopt the same structure, so the control rod driving mechanism in the application can solve the technical problems which are required to be solved by the sealed shell device, and can achieve the same technical effects as the sealed shell device.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. In addition, the principle and the implementation manner of the present application are explained by applying specific examples in the specification, the above description of the embodiments is only for helping understanding the method and the core idea of the present application, and the content of the present application should not be construed as limiting the present application.
Claims (11)
1. A capsule device, comprising:
the sealing shell comprises a sealing shell body, wherein the sealing shell body comprises a shell made of martensitic stainless steel materials, a through hole penetrating through the shell is formed in the sealing shell body, the through hole is used for installing a claw component, a coil is installed outside the shell, and magnetic force generated when the coil is electrified can drive the claw component to move;
the magnetic isolation ring assembly is sleeved outside the shell and positioned between the coil and the shell; wherein the content of the first and second substances,
the martensite stainless steel material has magnetic conductivity, an annular accommodating groove is formed in the seal shell body, the magnetism isolating ring assembly is installed in the annular accommodating groove, the axial length of the coil is larger than that of the annular accommodating groove, and two ends of the coil are located on the axial outer side of the annular accommodating groove.
2. The capsule device according to claim 1, wherein the capsule body further comprises:
the first connecting end is connected with one end of the shell and is used for connecting the shell and the stroke sleeve;
and the second connecting end part is connected with the other end of the shell and is used for connecting the shell and the top cover.
3. The capsule arrangement according to claim 2, characterized in that the first connecting end is made of an austenitic stainless steel material and the second connecting end is made of an alloy 690 material, the first connecting end being welded to one end of the housing and the second connecting end being welded to the other end of the housing.
4. The capsule device according to claim 2 or 3, characterized in that one end of the through-hole extends into the first connection end portion and the other end of the through-hole extends into the second connection end portion.
5. The capsule device according to claim 1, characterized in that the diameter D1 of the through hole and the outer diameter D2 of the annular receiving groove satisfy: D2-D1 is more than or equal to 12mm.
6. The capsule device according to claim 1, wherein the magnetism isolating ring assembly comprises three magnetism isolating rings sequentially sleeved along the axial direction of the housing, each magnetism isolating ring comprises a semi-annular first magnetism isolating portion and a semi-annular second magnetism isolating portion, the first magnetism isolating portion and the second magnetism isolating portion are fixedly connected, and the first magnetism isolating portion and the second magnetism isolating portion are arranged around the housing.
7. The capsule device according to claim 6, wherein the first and second flux barriers are each made of an austenitic stainless steel material.
8. The capsule device according to claim 6, wherein the first magnetic shielding portion is provided with a first fixing portion, the second magnetic shielding portion is provided with a second fixing portion, and the first magnetic shielding portion and the second magnetic shielding portion are connected by the first fixing portion and the second fixing portion.
9. The capsule device according to claim 8, characterized in that the first fixing portion is a semi-circular first groove and the second fixing portion is a semi-circular second groove, the first groove and the second groove being joined to form an annular groove.
10. The capsule device according to claim 8 or 9, further comprising:
the connecting piece, the connecting piece passes through first fixed part with the second fixed part is with first magnetism portion with second magnetism portion fixed connection that separates.
11. A control rod drive mechanism comprising the seal housing apparatus as set forth in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437574.1A CN114141395B (en) | 2021-11-30 | 2021-11-30 | Seal shell device and control rod driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437574.1A CN114141395B (en) | 2021-11-30 | 2021-11-30 | Seal shell device and control rod driving mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114141395A CN114141395A (en) | 2022-03-04 |
| CN114141395B true CN114141395B (en) | 2023-04-14 |
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| CN202111437574.1A Active CN114141395B (en) | 2021-11-30 | 2021-11-30 | Seal shell device and control rod driving mechanism |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003270375A (en) * | 2002-03-13 | 2003-09-25 | Japan Atom Energy Res Inst | Passive reactor shutdown mechanism |
| CN102192252B (en) * | 2011-05-19 | 2013-04-17 | 中国原子能科学研究院 | Electromagnetic clutch |
| CN208400514U (en) * | 2018-06-27 | 2019-01-18 | 中广核工程有限公司 | Nuclear power station reactor control stick driving mechanism and its field structure |
| CN108899103B (en) * | 2018-07-06 | 2021-01-05 | 中国核动力研究设计院 | Electromagnetic structure simulation unit of magnetic lifting type control rod driving mechanism and application |
| CN209526649U (en) * | 2019-03-26 | 2019-10-22 | 四川华都核设备制造有限公司 | Safe rod drive mechanism transmission device |
| CN112562963A (en) * | 2020-12-11 | 2021-03-26 | 中广核研究院有限公司 | Control rod drive mechanism and coil assembly thereof |
| CN113659796A (en) * | 2021-09-10 | 2021-11-16 | 重庆大学 | Hybrid excitation permanent magnet type reluctance linear motor type control rod driving mechanism |
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