CN110767330A - Double-layer vacuum-sealed thermocouple cable penetrating piece - Google Patents
Double-layer vacuum-sealed thermocouple cable penetrating piece Download PDFInfo
- Publication number
- CN110767330A CN110767330A CN201810839412.2A CN201810839412A CN110767330A CN 110767330 A CN110767330 A CN 110767330A CN 201810839412 A CN201810839412 A CN 201810839412A CN 110767330 A CN110767330 A CN 110767330A
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- interlayer
- vacuum
- thermocouple
- double
- shell
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 15
- 239000011229 interlayer Substances 0.000 claims abstract description 65
- 239000010410 layer Substances 0.000 claims abstract description 64
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 25
- 239000010935 stainless steel Substances 0.000 claims abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 10
- 230000035515 penetration Effects 0.000 claims description 20
- 238000005086 pumping Methods 0.000 claims description 7
- 230000004927 fusion Effects 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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
- G21C13/0285—Seals, e.g. for pressure vessels or containment vessels for container apertures
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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
-
- 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
- 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
- G21C17/112—Measuring temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a double-layer vacuum sealed thermocouple cable penetrating piece which comprises a thermocouple core wire ceramic vacuum penetrating piece, an interlayer vacuumizing pipeline, an interlayer outer shell, an interlayer inner shell, a stainless steel armored cable welding ring, a double-layer vacuum metal sealing ring and a stainless steel armored thermocouple, wherein the thermocouple core wire ceramic vacuum penetrating piece is connected with the interlayer outer shell to form outer layer vacuum sealing, the interlayer vacuumizing pipeline is connected with the interlayer outer shell, the stainless steel armored thermocouple is connected with the interlayer inner shell through the welding ring to form inner layer vacuum sealing, and the interlayer outer shell and the interlayer inner shell are connected. The advantages are that: can work under the high vacuum condition, and transmits the signal of the thermocouple out of the vacuum chamber. The double-layer vacuum structure and the double-layer vacuum metal sealing ring are favorable for guaranteeing the internal high-vacuum environment and meet the requirements on the reliability and the safety of the nuclear fusion reactor. The inner shell of the interlayer adopts an S-shaped groove structure, so that the welding seams in the interlayer and between the outer shells can be conveniently subjected to ray nondestructive detection, and the reliability and the safety of the device are improved.
Description
Technical Field
The invention belongs to a penetration piece, and particularly relates to a double-layer vacuum-sealed thermocouple cable penetration piece which is applied to a temperature monitoring system of a neutron flux monitor of an international thermonuclear fusion experimental reactor (ITER) device.
Background
The neutron flux monitor is one of the important measuring devices in the international thermonuclear fusion experimental reactor (ITER) and is mainly used for measuring the yield of the total neutron source, the fusion power and the neutron flux of the first wall. According to the measurement requirements, the neutron detector needs to be installed in a high vacuum chamber of the fusion reactor, and meanwhile, the temperature of the neutron detector is monitored. Due to the harsh high vacuum conditions during operation of the fusion reactor, there are very high sealing and reliability requirements for the cable penetration that crosses the high vacuum sealed boundary.
Disclosure of Invention
The invention aims to provide a double-layer vacuum sealed thermocouple cable penetrating piece which can meet the temperature monitoring requirement in a fusion reactor neutron flux monitor system and simultaneously meet the high reliability and safety requirements of a fusion reactor.
The technical scheme of the invention is as follows: the utility model provides a double-deck vacuum seal's thermocouple cable penetration piece, it includes that thermocouple heart yearn pottery vacuum pierces through, intermediate layer evacuation pipeline, the intermediate layer shell body, the interior casing of intermediate layer, stainless steel armour cable welding ring, stainless steel armour thermocouple, wherein, thermocouple heart yearn pottery vacuum pierces through and forms outer vacuum seal with the outer body coupling of intermediate layer, intermediate layer evacuation pipeline and intermediate layer shell body coupling, stainless steel armour thermocouple passes through the welding ring and forms inlayer vacuum seal with the interior body coupling of intermediate layer, the intermediate layer shell body, link to each other between the interior casing of intermediate layer.
The thermocouple core wire ceramic is penetrated through a welding flange carried by the thermocouple core wire ceramic in vacuum and is welded with the interlayer shell body to form outer layer vacuum sealing.
The interlayer vacuum pumping pipeline is connected with the interlayer shell in a welding mode.
The interlayer shell is provided with a double-layer vacuum metal sealing ring.
The stainless steel armored thermocouple is welded with the interlayer inner shell through the welding ring to form inner layer vacuum seal.
The tail end of the stainless steel armored thermocouple cable is provided with a ceramic package in the interlayer space, and a thermocouple core wire penetrating through the ceramic package is connected with a core wire penetrating through ceramic vacuum in a pressing mode through a screw.
The interlayer outer shell and the interlayer inner shell are connected through butt welding.
The interlayer inner shell adopts an S-shaped groove structure.
The invention has the beneficial effects that: can work under the high vacuum condition, and transmits the signal of the thermocouple out of the vacuum chamber. The double-layer vacuum structure is beneficial to guaranteeing the internal high-vacuum environment and meets the requirements of the nuclear fusion reactor on reliability and safety. The inner shell of the interlayer adopts an S-shaped groove structure, so that the welding seams in the interlayer and between the outer shells can be conveniently subjected to ray nondestructive detection, and the reliability and the safety of the device are improved. The double-layer vacuum-sealed thermocouple cable penetrating piece is simple in structure and good in machinability; after the integrated structure is assembled in a manufacturing plant, the on-site installation and debugging are facilitated.
Drawings
FIG. 1 is a schematic view of an overall structure of a double-layer vacuum-sealed thermocouple cable penetration assembly according to the present invention;
FIG. 2 is a detailed cross-sectional view of a double layer vacuum sealed thermocouple cable penetration provided in accordance with the present invention;
FIG. 3 is a schematic front view of a sandwiched outer shell of a double-layer vacuum-sealed thermocouple cable penetration provided by the present invention.
In the figure: 1 thermocouple core wire ceramic vacuum pierces through, 2 thermocouple core wires, 3 intermediate layer evacuation pipelines, 4 intermediate layer shells, 5 intermediate layer shells, 6 stainless steel armour cable welded ring, 7 double-deck vacuum metal seal circle, 8 stainless steel armour thermocouples.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
The utility model provides a double-deck vacuum seal's thermocouple cable penetration piece, includes that thermocouple heart yearn pottery vacuum pierces through 1, thermocouple heart yearn 2, intermediate layer evacuation pipeline 3, intermediate layer shell body 4, intermediate layer interior casing 5, stainless steel armour cable welding ring 6, double-deck vacuum metal seal circle 7, stainless steel armour thermocouple 8. Wherein the content of the first and second substances,
the thermocouple core wire ceramic vacuum penetration 1 is welded with the interlayer shell body 4 through a welding flange carried by the thermocouple core wire ceramic vacuum penetration 1 to form outer layer vacuum seal, and the interlayer vacuum pumping pipeline 3 is welded with the interlayer shell body 4. The interlayer outer shell 4 is provided with a double-layer vacuum metal sealing ring 7. The stainless steel armored thermocouple 8 is welded with the interlayer inner shell 5 through the welding ring 6 to form inner layer vacuum seal, the tail end of the thermocouple cable is provided with ceramic package in the interlayer space, and a core wire penetrating through the ceramic package is connected with a core wire penetrating through ceramic vacuum in a pressing mode through a screw. The interlayer outer shell 4 and the interlayer inner shell 5 are connected through butt welding.
The whole device can be arranged on a high vacuum cavity through a double-layer vacuum metal sealing ring 7. The stainless steel armored thermocouple and the welding ring thereof are welded with the interlayer inner shell to form inner layer vacuum seal; the stainless steel flange penetrated by the ceramic vacuum is welded with the interlayer shell to form outer layer vacuum seal; the inner shell and the outer shell of the interlayer are butt-welded to form inner vacuum seal; the three vacuum seals form independent interlayer spaces. The interlayer vacuum pumping pipeline is connected with the interlayer space, the auxiliary vacuum system is connected with the interlayer vacuum pumping pipeline, the interlayer space can be vacuumized, the vacuum degree in the interlayer space can be monitored, and the influence of any failure of the inner layer vacuum seal and the outer layer vacuum seal on the high vacuum environment in the high vacuum cavity can be avoided. The requirements of high vacuum sealing and high reliability of the fusion reactor are met.
The interlayer inner shell 5 adopts an S-shaped groove structure, so that the welding line between the interlayer inner shell 4 and the interlayer outer shell 5 can be conveniently subjected to ray nondestructive testing, and the safety and the reliability of the device are improved.
As shown in figure 1, the interlayer outer shell 4 and the interlayer inner shell 5 are connected by welding, and a double-layer vacuum metal sealing ring 7 is arranged on the interlayer outer shell 4 and can be arranged on a high-vacuum cavity.
As shown in FIG. 2, a flange of the thermocouple core wire ceramic vacuum penetration 1 is welded with the interlayer outer shell 4, and the interlayer vacuum pumping pipeline 3 is welded with the interlayer outer shell 4. The end of the thermocouple cable 8 has a ceramic package in the interlayer space, and the thermocouple core wire 2 penetrating through the ceramic package is connected with the ceramic vacuum-penetrated core wire by screw compression. The stainless steel armored thermocouple 8 is welded with the interlayer inner shell 5 through the welding ring 6 to form inner layer vacuum seal. The inner shell 4 of the interlayer is in an S-shaped groove structure, so that the welding seams between the inner shell and the outer shell of the interlayer can be conveniently subjected to ray nondestructive testing, and the reliability and the safety of the device are improved.
As shown in fig. 3, there are four pairs of thermocouple core wires on the interlayer outer shell 4, and the interlayer vacuum pumping pipeline 3. The interlayer vacuum line 3 may be connected to an auxiliary vacuum system to monitor and maintain the vacuum in the interlayer space. The double-layer vacuum metal sealing ring 7 is provided with two sealing surfaces, a gap in the middle can be connected with an auxiliary vacuum system, the vacuum degree of the gap is maintained and monitored, and the sealing performance and the reliability of the device are improved.
The present invention has been described in detail with reference to the drawings and the embodiments, but the present invention/invention is not limited to the above embodiments and various changes can be made without departing from the gist of the present invention/invention. The prior art can be adopted for the invention/the content which is not described in detail in the invention.
Claims (8)
1. A double-layer vacuum-sealed thermocouple cable penetrating piece is characterized in that: it includes that thermocouple heart yearn ceramic vacuum pierces through (1), intermediate layer evacuation pipeline (3), intermediate layer shell body (4), interior casing of intermediate layer (5), stainless steel armour cable welding ring (6), stainless steel armour thermocouple (8), wherein, thermocouple heart yearn ceramic vacuum pierces through (1) and is connected with intermediate layer shell body (4) and forms outer vacuum seal, intermediate layer evacuation pipeline (3) are connected with intermediate layer shell body (4), stainless steel armour thermocouple (8) are connected with interior casing of intermediate layer (5) through welding ring (6) and are formed inner layer vacuum seal, intermediate layer shell body (4), link to each other between interior casing of intermediate layer (5).
2. A double layer vacuum sealed thermocouple cable penetration assembly according to claim 1, wherein: the thermocouple core wire ceramic vacuum penetration (1) is welded with the interlayer shell body (4) through a welding flange carried by the thermocouple core wire ceramic vacuum penetration to form outer layer vacuum sealing.
3. A double layer vacuum sealed thermocouple cable penetration assembly according to claim 1, wherein: the interlayer vacuum pumping pipeline (3) is connected with the interlayer shell (4) in a welding mode.
4. A double layer vacuum sealed thermocouple cable penetration assembly according to claim 1, wherein: the interlayer shell (4) is provided with a double-layer vacuum metal sealing ring (7).
5. A double layer vacuum sealed thermocouple cable penetration assembly according to claim 1, wherein: the stainless steel armored thermocouple (8) is welded with the interlayer inner shell (5) through the welding ring (6) to form inner layer vacuum seal.
6. A double layer vacuum sealed thermocouple cable penetration assembly according to claim 1, wherein: the tail end of the stainless steel armored thermocouple (8) cable is provided with a ceramic package in the interlayer space, and a thermocouple core wire (2) penetrating through the ceramic package is connected with a core wire penetrating through the ceramic vacuum through (1) in a pressing mode through a screw.
7. A double layer vacuum sealed thermocouple cable penetration assembly according to claim 1, wherein: the interlayer outer shell (4) and the interlayer inner shell (5) are connected through butt welding.
8. A double layer vacuum sealed thermocouple cable penetration assembly according to claim 1, wherein: the interlayer inner shell (5) adopts an S-shaped groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810839412.2A CN110767330B (en) | 2018-07-27 | 2018-07-27 | Double-layer vacuum-sealed thermocouple cable penetrating piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810839412.2A CN110767330B (en) | 2018-07-27 | 2018-07-27 | Double-layer vacuum-sealed thermocouple cable penetrating piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110767330A true CN110767330A (en) | 2020-02-07 |
| CN110767330B CN110767330B (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810839412.2A Active CN110767330B (en) | 2018-07-27 | 2018-07-27 | Double-layer vacuum-sealed thermocouple cable penetrating piece |
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| Country | Link |
|---|---|
| CN (1) | CN110767330B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341468A (en) * | 2020-03-18 | 2020-06-26 | 中国核动力研究设计院 | Sealing structure and method for installing sensor through two-layer pressure boundary |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1530029A (en) * | 1976-04-26 | 1978-10-25 | Adcola Prod Ltd | Soldering instruments |
| CN1490822A (en) * | 2003-09-12 | 2004-04-21 | 清华大学 | Reactor containment thermocouple penetration piece |
| JP2007192770A (en) * | 2006-01-23 | 2007-08-02 | Sukegawa Electric Co Ltd | Vacuum feed through for thermocouple |
| CN201795874U (en) * | 2010-08-24 | 2011-04-13 | 沈阳真空技术研究所 | Thermoelectric couple for vacuum high-temperature measurement and control |
| CN202119556U (en) * | 2011-03-26 | 2012-01-18 | 宁波奥崎自动化仪表设备有限公司 | Thermocouple penetrating assembly of high-temperature high-voltage container |
| EP3300537A1 (en) * | 2016-05-16 | 2018-04-04 | Teledyne Brown Engineering, Inc. | Electrical penetrator assembly |
| CN208507206U (en) * | 2018-07-27 | 2019-02-15 | 核工业西南物理研究院 | A kind of thermocouple cable penetration piece of double-layer vacuum sealing |
-
2018
- 2018-07-27 CN CN201810839412.2A patent/CN110767330B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1530029A (en) * | 1976-04-26 | 1978-10-25 | Adcola Prod Ltd | Soldering instruments |
| CN1490822A (en) * | 2003-09-12 | 2004-04-21 | 清华大学 | Reactor containment thermocouple penetration piece |
| JP2007192770A (en) * | 2006-01-23 | 2007-08-02 | Sukegawa Electric Co Ltd | Vacuum feed through for thermocouple |
| CN201795874U (en) * | 2010-08-24 | 2011-04-13 | 沈阳真空技术研究所 | Thermoelectric couple for vacuum high-temperature measurement and control |
| CN202119556U (en) * | 2011-03-26 | 2012-01-18 | 宁波奥崎自动化仪表设备有限公司 | Thermocouple penetrating assembly of high-temperature high-voltage container |
| EP3300537A1 (en) * | 2016-05-16 | 2018-04-04 | Teledyne Brown Engineering, Inc. | Electrical penetrator assembly |
| CN208507206U (en) * | 2018-07-27 | 2019-02-15 | 核工业西南物理研究院 | A kind of thermocouple cable penetration piece of double-layer vacuum sealing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341468A (en) * | 2020-03-18 | 2020-06-26 | 中国核动力研究设计院 | Sealing structure and method for installing sensor through two-layer pressure boundary |
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| Publication number | Publication date |
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| CN110767330B (en) | 2024-06-11 |
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