CN107393615B - Auxiliary device for sealing and welding pressure-resistant shell of nuclear reactor control rod driving mechanism - Google Patents
Auxiliary device for sealing and welding pressure-resistant shell of nuclear reactor control rod driving mechanism Download PDFInfo
- Publication number
- CN107393615B CN107393615B CN201710643700.6A CN201710643700A CN107393615B CN 107393615 B CN107393615 B CN 107393615B CN 201710643700 A CN201710643700 A CN 201710643700A CN 107393615 B CN107393615 B CN 107393615B
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- CN
- China
- Prior art keywords
- ring
- pressure
- outer ring
- resistant shell
- control rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C21/00—Apparatus or processes specially adapted to the manufacture of reactors or parts thereof
- G21C21/18—Manufacture of control elements covered by group G21C7/00
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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 invention relates to a sealing welding auxiliary device of a pressure-resistant shell of a nuclear reactor control rod driving mechanism, which comprises a base ring, an inner ring, an outer ring, the pressure-resistant shell and a tube seat, and is characterized in that more than two inner rings are axially arranged on the inner ring surface of the base ring, more than one outer ring is axially arranged on the outer ring surface of the base ring, the inner ring and the outer ring are coaxially arranged, the inner ring surface of the inner ring is matched with the outer edge of an outer annular welding lug on the pressure-resistant shell, and the outer ring surface of the outer ring is matched with the inner edge of an inner annular welding lug on the tube seat. The invention adopts a multi-layer structure, when the welding and cutting of the first layer reaches 5 times, the first layer is removed, the second layer is started to be used, and the like, so that at least 30 times of welding and cutting can be realized. The invention has simple structure, safety and reliability.
Description
Technical Field
The invention relates to a welding auxiliary device, in particular to a sealing welding auxiliary device for a pressure-resistant shell of a nuclear reactor control rod driving mechanism.
Background
In the control rod driver mechanism of the nuclear power station, a pressure-resistant shell and a CRDM tube seat of a pressure container are connected by screw threads and welded in a sealing way to form a closed loop pressure boundary. In the whole operation life cycle of the nuclear power station, the pressure-resistant shell is required to be disassembled due to reasons such as material changing, process transportation and the like, the process is cutting, disassembling, material changing (transportation), assembling and welding, the existing device is not easy to meet the requirement of disassembling and assembling the control rod driving mechanism for more than ten times, and the tube seat is possibly damaged. Therefore, it is necessary to design a pressure-resistant shell sealing welding auxiliary device of a nuclear reactor control rod driving mechanism, which has a simple structure, is safe and reliable, and can meet the requirement of more than 30 times of disassembly and assembly of the control rod driving mechanism.
Disclosure of Invention
The invention aims to provide a pressure-resistant shell sealing and welding auxiliary device for a control rod driving mechanism of a nuclear reactor, which has a simple structure, is safe and reliable and can meet the requirement of more than 30 times of disassembly and assembly of the control rod driving mechanism.
In order to achieve the above purpose, the invention adopts the following technical scheme: the auxiliary sealing and welding device for the pressure-resistant shell of the nuclear reactor control rod driving mechanism comprises a base ring, an inner ring, an outer ring, the pressure-resistant shell and a tube seat, and is characterized in that more than two inner rings are axially arranged on the inner ring surface of the base ring, more than one outer ring is axially arranged on the outer ring surface of the base ring, the inner ring and the outer ring are coaxially arranged, the inner ring surface of the inner ring is matched with the outer edge of an outer ring-shaped welding lug on the pressure-resistant shell, and the outer ring surface of the outer ring is matched with the inner edge of an inner ring-shaped welding lug on the tube seat.
Further, three inner rings are axially arranged on the inner ring surface of the base ring, and three outer rings are axially arranged on the outer ring surface of the base ring.
The invention adopts a multi-layer structure, when the welding and cutting of the first layer reaches 5 times, the first layer is removed, the second layer is started to be used, and the like, so that at least 30 times of welding and cutting can be realized. The invention has simple structure, safety and reliability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the base ring, inner ring and outer ring structures of the present invention.
In the figure: 1-base ring; 2-an inner ring; 3-an outer ring; 4-a pressure housing; 4.1-outer annular lug; 5-tube seat; 5.1-inner annular lug.
Detailed Description
The invention is further described below with reference to the drawings and examples, which should not be construed as limiting the invention.
The auxiliary device for sealing and welding the pressure-resistant shell of the nuclear reactor control rod driving mechanism comprises a base ring 1, an inner ring 2, an outer ring 3, a pressure-resistant shell 4 and a tube seat 5, wherein more than two inner rings 2 are axially arranged on the inner ring surface of the base ring 1, more than one outer ring 3 is axially arranged on the outer ring surface of the base ring 1, the inner ring 2 and the outer ring 3 are coaxially arranged, the inner ring surface of the inner ring 2 is matched with the outer edge of an outer annular welding lug 4.1 on the pressure-resistant shell 4, and the outer ring surface of the outer ring 3 is matched with the inner edge of an inner annular welding lug 5.1 on the tube seat 5.
Preferred embodiments are: in the above scheme, the inner ring surface of the base ring 1 is axially provided with three inner rings 2, and the outer ring surface of the base ring 1 is axially provided with three outer rings 3.
What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (2)
1. The utility model provides a nuclear reactor control rod actuating mechanism pressure-resistant housing seal welding auxiliary device, includes base ring (1), inner ring (2), outer loop (3), pressure-resistant housing (4) and tube socket (5), its characterized in that: more than two inner rings (2) are axially arranged on the inner ring surface of the base ring (1), more than one outer ring (3) are axially arranged on the outer ring surface of the base ring (1), the inner rings (2) and the outer rings (3) are coaxially arranged, the inner ring surface of the inner rings (2) is matched with the outer edges of the outer ring-shaped welding lugs (4.1) on the pressure-resistant shell (4), and the outer ring surface of the outer rings (3) is matched with the inner edges of the inner ring-shaped welding lugs (5.1) on the tube seat (5).
2. The nuclear reactor control rod drive mechanism pressure housing seal welding assist apparatus of claim 1, wherein: three inner rings (2) are axially arranged on the inner ring surface of the base ring (1), and three outer rings (3) are arranged on the outer ring surface of the base ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710643700.6A CN107393615B (en) | 2017-07-31 | 2017-07-31 | Auxiliary device for sealing and welding pressure-resistant shell of nuclear reactor control rod driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710643700.6A CN107393615B (en) | 2017-07-31 | 2017-07-31 | Auxiliary device for sealing and welding pressure-resistant shell of nuclear reactor control rod driving mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107393615A CN107393615A (en) | 2017-11-24 |
| CN107393615B true CN107393615B (en) | 2023-04-25 |
Family
ID=60343527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710643700.6A Active CN107393615B (en) | 2017-07-31 | 2017-07-31 | Auxiliary device for sealing and welding pressure-resistant shell of nuclear reactor control rod driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107393615B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263871A (en) * | 1986-05-09 | 1987-11-16 | Babcock Hitachi Kk | Pipe fitting structure in container mirror part |
| US5271048A (en) * | 1992-12-21 | 1993-12-14 | B&W Nuclear Service Company | Replacement nozzle and method for replacing a nozzle in a pressure vessel |
| JPH06307548A (en) * | 1993-04-22 | 1994-11-01 | Mitsubishi Heavy Ind Ltd | Protecting device for seal weld |
| JP2000304886A (en) * | 1999-04-23 | 2000-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Control rod drive mechanism housing support device for nuclear reactor pressure vessel |
| US6152183A (en) * | 1998-03-13 | 2000-11-28 | Ce Nuclear Power Llc | Nozzle cap for sealing a nozzle by welding with a flexible element and method therefor |
| JP2007232457A (en) * | 2006-02-28 | 2007-09-13 | Mitsubishi Heavy Ind Ltd | Repairing method of penetration nozzle, and plug for nozzle port |
| CN101676632A (en) * | 2008-09-16 | 2010-03-24 | 通用电气公司 | Reusable weld joint for syngas fuel nozzles |
| CN104308399A (en) * | 2014-08-27 | 2015-01-28 | 中广核工程有限公司 | Tool and method for repairing omega seal weld defects of CRDM (control rod drive mechanism) pressure-resistant housing of nuclear power plant |
| CN207282161U (en) * | 2017-07-31 | 2018-04-27 | 中国船舶重工集团公司第七一九研究所 | Command bundle rods for nuclear reactors driving mechanism pressure hull sealing welding auxiliary device |
-
2017
- 2017-07-31 CN CN201710643700.6A patent/CN107393615B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263871A (en) * | 1986-05-09 | 1987-11-16 | Babcock Hitachi Kk | Pipe fitting structure in container mirror part |
| US5271048A (en) * | 1992-12-21 | 1993-12-14 | B&W Nuclear Service Company | Replacement nozzle and method for replacing a nozzle in a pressure vessel |
| JPH06307548A (en) * | 1993-04-22 | 1994-11-01 | Mitsubishi Heavy Ind Ltd | Protecting device for seal weld |
| US6152183A (en) * | 1998-03-13 | 2000-11-28 | Ce Nuclear Power Llc | Nozzle cap for sealing a nozzle by welding with a flexible element and method therefor |
| JP2000304886A (en) * | 1999-04-23 | 2000-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Control rod drive mechanism housing support device for nuclear reactor pressure vessel |
| JP2007232457A (en) * | 2006-02-28 | 2007-09-13 | Mitsubishi Heavy Ind Ltd | Repairing method of penetration nozzle, and plug for nozzle port |
| CN101676632A (en) * | 2008-09-16 | 2010-03-24 | 通用电气公司 | Reusable weld joint for syngas fuel nozzles |
| CN104308399A (en) * | 2014-08-27 | 2015-01-28 | 中广核工程有限公司 | Tool and method for repairing omega seal weld defects of CRDM (control rod drive mechanism) pressure-resistant housing of nuclear power plant |
| CN207282161U (en) * | 2017-07-31 | 2018-04-27 | 中国船舶重工集团公司第七一九研究所 | Command bundle rods for nuclear reactors driving mechanism pressure hull sealing welding auxiliary device |
Non-Patent Citations (1)
| Title |
|---|
| 李云.控制棒驱动机构密封泄露应对策略分析.《中国核电》.2016,第第9卷卷(第第9卷期),第67-70页. * |
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| Publication number | Publication date |
|---|---|
| CN107393615A (en) | 2017-11-24 |
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