CN202221488U - Optical fiber feedthrough assembly for connecting a nuclear reactor safety shell optical path - Google Patents
Optical fiber feedthrough assembly for connecting a nuclear reactor safety shell optical path Download PDFInfo
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- CN202221488U CN202221488U CN2011202987344U CN201120298734U CN202221488U CN 202221488 U CN202221488 U CN 202221488U CN 2011202987344 U CN2011202987344 U CN 2011202987344U CN 201120298734 U CN201120298734 U CN 201120298734U CN 202221488 U CN202221488 U CN 202221488U
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- optical fiber
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- metal capillary
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Abstract
The utility model belonging to the technical field of the optical fiber electric feedthrough piece, concretely relates to an optical fiber feedthrough assembly for connecting a nuclear reactor safety shell optical path, wherein an optical fiber feedthrough line is composed of a quartz optical fiber, an optical fiber coating layer, an optical fiber buffer layer and an optical fiber jacket layer which are arranged from the inside to outside in turn; a metal capillary tube is sleeved with the optical fiber feedthrough line, a metal capillary tube leak detection hole is opened on the metal capillary tube, two thermal shrinkage tubes B respectively thermally shrink on the connection point of each optical fiber feedthrough line and two ends of the capillary tube, a nuclear level hot-melt adhesive is filled into the thermal shrinkage tubes B; two ends of at least one optical fiber feedthrough line sleeved with the metal capillary tube respectively pass through a plurality of sealing modules, thus a stainless steel protection sleeve is sleeved with the outside of the formed whole body and a stainless steel protection sleeve leak detection hole is opened on the stainless steel protection sleeve; two ends of a plurality of optical fiber feedthrough lines with the metal capillary tubes, the optical fiber feedthrough lines thermally shrink into one beam respectively by one thermal shrinking pipe A on each thermal shrinking pipe B, thus an elastic metal hose is sleeved with the outer whole body of the beam of the lines.
Description
Technical field
The utility model belongs to optical fiber electrical penetration technical field, is specifically related to a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for.
Background technology
The optical fiber feed-through assembly is as signal transmission medium with optical fiber; The light path that is used for the inside and outside optical cable of nuclear reactor safety shell connects; Can be installed in together in the assembly type electrical penetration cylindrical shell with the on all four low-voltage electrical penetration piece of structure feedthrough assembly, and can realize the replacing in the phase in work longevity.
At present, the manufacture craft of assembly type electrical penetration feedthrough conductor assembly comprises that machinery is swaged or spinning process and continuous balanced extrusion forming process both at home and abroad.All adopted machinery to swage or the spinning process method such as the CONAX of the U.S., AUXITROL, Russian ELOX, the complete institute of Chinese Shanghai of France; This method can realize feedthrough assembly self better seal; But this process is bigger to the mechanical impact force of moulding conductor assembly; Only be fit to make the metal electric conductor assembly of tape insulation layer, be not suitable for making the optical fiber feed-through assembly.The metal electric conductor feedthrough assembly that Chinese Nuclear Power Design Academy adopts continuous balanced extrusion forming process to make has been realized the positiver sealing and the good electrical performance requirement of electrical penetration feedthrough assembly self, and its feedthrough assembly is successfully applied in the existing homemade electrical penetration product.Simultaneously, this technology is leaned on continuously the feedthrough conductor assembly is carried out the effect that balanced undergauge reaches sealing, and therefore this technology is less to the mechanical impact force of conductor, is particularly suitable for making the optical fiber feed-through assembly.
" PENETRATION ASSEMBLY FOR BRINGING AN OPTICAL CABLE THROUGH A VESSEL WALL " that United States Patent (USP) 4553812 is announced is to be specifically designed to the specialized equipment that optical cable runs through the nuclear reactor safety shell; Though its optical fiber feed-through line does not bear the mechanical stress effect; But what it adopted is the monolithic construction form; The glass web member of its optical fiber feed-through line adopts the glass metal sintering process with being connected of metal connecting piece, and its technology difficulty is big, cost is high; Simultaneously, the optical fiber feed-through line adopts on-dismountable the connection with the dividing plate oversleeve, and its installation, to change difficulty big, and optical fiber feed-through line quantity is not extendible.
" a kind of optical fiber feed-through line that is used for the connection of pressurized-water reactor nuclear power plant containment light path " that Chinese patent CN201489167U announces is the modular structure form that adopts; Numerous advantages with modular structure; Can be installed to together in the cylindrical shell of assembly type electrical penetration with the on all four low-voltage electrical penetration piece of version feedthrough line, realize the connection of the inside and outside optical cable of nuclear reactor safety shell.But above-mentioned patent exists following shortcoming to cause its use in nuclear reactor to be restricted.
(1) adopts the technology of swaging to realize sealing, cause optical fiber to receive bigger mechanical impact force effect, the optical fiber micro-crack speed of growth is accelerated, have a strong impact on the serviceable life of optical fiber;
(2) adopt the sealed with brazing flange to realize the sealing of metal coated fiber and metal coating sleeve pipe, this technology difficulty is bigger, and cost is high, is not suitable for mass production;
(3) outside protective case of optical fiber feed-through assembly is designed with helium inspection pore, can detect the leak case of elaxtic seal and outside protective case, but can't the detection fiber conductor and the leak case of metal thin tube; Therefore, the leakage of whole conductor assembly can't realize effectively detecting.
Summary of the invention
The purpose of the utility model is to provide a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for, to overcome the above-mentioned deficiency that the existing fiber feedthrough device exists.
For achieving the above object; The technical scheme that the utility model is taked is: a kind of optical fiber feed-through assembly that is used for the connection of nuclear reactor safety shell light path, and this assembly comprises optical fiber feed-through line, metal capillary, stainless steel protection sleeve pipe, seal modules, heat-shrink tube A and heat-shrink tube B; Wherein the optical fiber feed-through line comprises silica fibre, optical fiber coating, fibre buffer and fiber jacket, and silica fibre is outside equipped with optical fiber coating, and optical fiber coating is outside equipped with fibre buffer, and fibre buffer is outside equipped with fiber jacket; The optical fiber feed-through line is with metal capillary outward, and the pyrocondensation of two heat-shrink tube B difference is in the junction at every optical fiber feed-through line and metal capillary two ends; The several sealed module is passed at least one two ends that are with the optical fiber feed-through line of metal capillary respectively, and formed integral sleeve has the stainless steel protection sleeve pipe; The some two ends that have the optical fiber feed-through line of metal capillary, and through a heat-shrink tube A all optical fiber feed-through line pyrocondensations are become a branch of respectively at each heat-shrink tube B place, its outer integral body is with the elastic metallic flexible pipe.
Be filled with nuclear level hot melt adhesive in the described heat-shrink tube B.
Have the metal capillary leak hunting aperture on the middle part tube wall of said metal capillary.
Said metal capillary leak hunting aperture communicates with the inner chamber of stainless steel protection sleeve pipe.
Have stainless steel protection sleeve pipe leak hunting aperture on the middle part tube wall of said stainless steel protection sleeve pipe.
Said stainless steel protection sleeve pipe leak hunting aperture communicates with the inner chamber of stainless steel protection sleeve pipe.
The thickness of said fibre buffer is more than or equal to 0.3 millimeter.
The quantity of said heat-shrink tube B is two times of quantity of optical fiber feed-through line.
Said heat-shrink tube A and heat-shrink tube B are nuclear level heat-shrink tube.
The beneficial effect that the utility model is obtained is:
This optical fiber feed-through assembly can realize that optical cable runs through the function of containment, has both satisfied optical transmission performance requirement preferably, satisfies higher sealing property again and requires:
(1) adopts the modular structure design, make this optical fiber feed-through assembly highly versatile, one-piece construction is simple, moulding process is ripe, low cost of manufacture, is fit to mass production;
(2) adopt metal capillary that the optical fiber feed-through line is carried out the overcoat protection, avoid the optical fiber feed-through line in forming process, to be damaged;
(3) the overcoat metal capillary of the stainless steel protection sleeve pipe of optical fiber feed-through assembly and optical fiber feed-through line all is designed with leak hunting aperture, is used for the sealing property of detection fiber feedthrough assembly jointly, has guaranteed the validity that optical fiber feed-through assembly sealing property detects;
(4) with the multifiber feedthrough line pyrocondensation of optical fiber feed-through assembly together through heat-shrink tube A; Form a branch of; Integral sleeve elastic metallic flexible pipe again causes the optical fiber feed-through line and the external fiber position easily of continuing, be convenient to optical fiber continue and to the protection of optical fiber feed-through line;
(5) conductor in the optical fiber feed-through assembly does not have any optics and continues, and has guaranteed the reliability of optical transmission performance;
(6) the heat-shrink tube B pyrocondensation protection that is filled with nuclear level hot melt adhesive is adopted in the junction at optical fiber feed-through line and metal capillary two ends; Guaranteed the mechanical protection of optical fiber feed-through line, improved the sealing reliability between optical fiber feed-through line and the metal capillary simultaneously in the metal capillary junction.
Description of drawings
Fig. 1 is used for the optical fiber feed-through assembly assumption diagram that nuclear reactor safety shell light path connects for the utility model is said;
Fig. 2 is used for the optical fiber feed-through toe-in composition of the optical fiber feed-through assembly overcoat metal capillary of nuclear reactor safety shell light path connection for the utility model is said;
Among the figure: 1, metal capillary leak hunting aperture; 2, silica fibre; 3, optical fiber coating; 4, fibre buffer; 5, fiber jacket; 6, metal capillary; 7, stainless steel protection sleeve pipe; 8, stainless steel protection sleeve pipe leak hunting aperture; 9, seal modules; 10, optical fiber feed-through line; 11, heat-shrink tube A; 12, heat-shrink tube B.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
As shown in Figure 1, the said a kind of optical fiber feed-through assembly that is used for the connection of nuclear reactor safety shell light path of the utility model comprises optical fiber feed-through line 10, metal capillary 6, stainless steel protection sleeve pipe 7, seal modules 9, heat-shrink tube A11 and heat-shrink tube B12; As shown in Figure 2; Optical fiber feed-through line 10 comprises silica fibre 2, optical fiber coating 3, fibre buffer 4 and fiber jacket 5; Silica fibre 2 is outside equipped with optical fiber coating 3, and optical fiber coating 3 is outside equipped with fibre buffer 4, and fibre buffer 4 is outside equipped with fiber jacket 5; Be with metal capillary 6 outside the optical fiber feed-through line 10, have metal capillary leak hunting aperture 1 on the middle part tube wall of metal capillary 6; As shown in Figure 1, pyrocondensation is in the junction of every optical fiber feed-through line 10 with metal capillary 6 two ends respectively for two heat-shrink tube B12, and promptly the quantity of heat-shrink tube B12 is two times of quantity of optical fiber feed-through line 10, is filled with a nuclear level hot melt adhesive in the every heat-shrink tube B12; Several sealed module 9 is passed at least one two ends that are with the optical fiber feed-through line 10 of metal capillary 6 respectively; Formed integral sleeve has stainless steel protection sleeve pipe 7; Have stainless steel protection sleeve pipe leak hunting aperture 8 on the middle part tube wall of stainless steel protection sleeve pipe 7, metal capillary leak hunting aperture 1 all communicates with the inner chamber of stainless steel protection sleeve pipe 7 with stainless steel protection sleeve pipe leak hunting aperture 8; The some two ends that have the optical fiber feed-through line 10 of metal capillary 6, and through a heat-shrink tube A11 all optical fiber feed-through line 10 pyrocondensations are become a branch of respectively at each heat-shrink tube B12 place, its outer integral body is with the elastic metallic flexible pipe.
Wherein silica fibre 2 is formed through mixing by fiber core layer and fibre cladding, makes it not only satisfy certain index distribution requirement but also satisfy certain dimensional requirement; Optical fiber coating 3 had not only played protective action to fibre cladding but also can weaken the influence of the shear stress that brings out little change; The thickness of fibre buffer 4 is more than or equal to 0.3 millimeter, and it has weakened the optical fiber feed-through assembly mechanical stress that optical fiber receives in forming process, has delayed the speed of growth of optical fiber micro-crack, has guaranteed that optical fiber has the long phase in use longevity; Fiber jacket 5 has improved fibre tensile strength, flexural strength, has guaranteed the optical fiber feed-through line 10 due physical strength that is in operation; 6 pairs of optical fiber of metal capillary have played mechanical protection effect preferably; Optical fiber feed-through assembly mechanical impact force that optical fiber receives in forming process and mechanical stress have also been weakened simultaneously; Delayed the speed of growth of optical fiber micro-crack, guaranteed that further optical fiber has the long phase in use longevity; Seal modules 9 is by polysulfones or polyetheretherketone or polyethersulfone or polyimide or other special engineering plastics add through machine or the mold pressing injection mo(u)lding obtains; Gap between the optical fiber feed-through line 10 of seal modules 9 and metal coating sleeve pipe 7, overcoat metal capillary 6 adopts continuous balanced extrusion process to eliminate, and realizes the sealing between the three to reach certain elasticity crimp; Used heat-shrink tube A11 and heat-shrink tube B12 are nuclear level heat-shrink tube.
Claims (9)
1. one kind is used for the optical fiber feed-through assembly that nuclear reactor safety shell light path connects, and it is characterized in that: this assembly comprises optical fiber feed-through line (10), metal capillary (6), stainless steel protection sleeve pipe (7), seal modules (9), heat-shrink tube A (11) and heat-shrink tube B (12); Wherein optical fiber feed-through line (10) comprises silica fibre (2), optical fiber coating (3), fibre buffer (4) and fiber jacket (5); Silica fibre (2) is outside equipped with optical fiber coating (3); Optical fiber coating (3) is outside equipped with fibre buffer (4), and fibre buffer (4) is outside equipped with fiber jacket (5); The outer metal capillary (6) that is with of optical fiber feed-through line (10), the pyrocondensation of two heat-shrink tube B (12) difference is in the junction of every optical fiber feed-through line (10) with metal capillary (6) two ends; Several sealed module (9) is passed at least one two ends that are with the optical fiber feed-through line (10) of metal capillary (6) respectively, and formed integral sleeve has stainless steel protection sleeve pipe (7); The some two ends that have the optical fiber feed-through line (10) of metal capillary (6), and locate through a heat-shrink tube A (11) all optical fiber feed-through line (10) pyrocondensations to be become a branch of respectively at each heat-shrink tube B (12), its outer integral body is with the elastic metallic flexible pipe.
2. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 1 is characterized in that: be filled with nuclear level hot melt adhesive in the described heat-shrink tube B (12).
3. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 1 is characterized in that: have metal capillary leak hunting aperture (1) on the middle part tube wall of said metal capillary (6).
4. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 3, it is characterized in that: said metal capillary leak hunting aperture (1) communicates with the inner chamber of stainless steel protection sleeve pipe (7).
5. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 1 is characterized in that: have stainless steel protection sleeve pipe leak hunting aperture (8) on the middle part tube wall of said stainless steel protection sleeve pipe (7).
6. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 5, it is characterized in that: said stainless steel protection sleeve pipe leak hunting aperture (8) communicates with the inner chamber of stainless steel protection sleeve pipe (7).
7. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 1, it is characterized in that: the thickness of said fibre buffer (4) is more than or equal to 0.3 millimeter.
8. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 1 is characterized in that: the quantity of said heat-shrink tube B (12) is two times of quantity of optical fiber feed-through line (10).
9. a kind of optical fiber feed-through assembly that nuclear reactor safety shell light path connects that is used for according to claim 1 is characterized in that: said heat-shrink tube A (11) and heat-shrink tube B (12) are nuclear level heat-shrink tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202987344U CN202221488U (en) | 2011-08-17 | 2011-08-17 | Optical fiber feedthrough assembly for connecting a nuclear reactor safety shell optical path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202987344U CN202221488U (en) | 2011-08-17 | 2011-08-17 | Optical fiber feedthrough assembly for connecting a nuclear reactor safety shell optical path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202221488U true CN202221488U (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202987344U Expired - Lifetime CN202221488U (en) | 2011-08-17 | 2011-08-17 | Optical fiber feedthrough assembly for connecting a nuclear reactor safety shell optical path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202221488U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257421A (en) * | 2013-05-20 | 2013-08-21 | 江苏南方通信科技有限公司 | Novel tightly-packed fiber and manufacturing method thereof |
| CN106662719A (en) * | 2014-08-08 | 2017-05-10 | 东方智慧株式会社 | Optical fiber penetration |
| WO2019242263A1 (en) * | 2018-06-22 | 2019-12-26 | 清华大学 | Electrical penetration member, manufacturing method therefor, and electrical penetration device |
| CN114509846A (en) * | 2017-11-21 | 2022-05-17 | 朗美通经营有限责任公司 | High density optical fiber feedthrough |
| US11978566B2 (en) | 2018-12-29 | 2024-05-07 | Chinergy Co., Ltd. | Unloading device |
-
2011
- 2011-08-17 CN CN2011202987344U patent/CN202221488U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257421A (en) * | 2013-05-20 | 2013-08-21 | 江苏南方通信科技有限公司 | Novel tightly-packed fiber and manufacturing method thereof |
| CN106662719A (en) * | 2014-08-08 | 2017-05-10 | 东方智慧株式会社 | Optical fiber penetration |
| CN106662719B (en) * | 2014-08-08 | 2019-10-29 | 东方智慧株式会社 | Optical fiber runs through device |
| CN114509846A (en) * | 2017-11-21 | 2022-05-17 | 朗美通经营有限责任公司 | High density optical fiber feedthrough |
| WO2019242263A1 (en) * | 2018-06-22 | 2019-12-26 | 清华大学 | Electrical penetration member, manufacturing method therefor, and electrical penetration device |
| US11488734B2 (en) | 2018-06-22 | 2022-11-01 | Tsinghua University | Electrical penetration assembly, manufacturing method thereof, and electrical penetration device |
| US11978566B2 (en) | 2018-12-29 | 2024-05-07 | Chinergy Co., Ltd. | Unloading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120516 |
|
| CX01 | Expiry of patent term |