CN101710201A - Optical fiber airtightly leading out method for GIS cavity - Google Patents
Optical fiber airtightly leading out method for GIS cavity Download PDFInfo
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- CN101710201A CN101710201A CN200910237042A CN200910237042A CN101710201A CN 101710201 A CN101710201 A CN 101710201A CN 200910237042 A CN200910237042 A CN 200910237042A CN 200910237042 A CN200910237042 A CN 200910237042A CN 101710201 A CN101710201 A CN 101710201A
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Abstract
The invention discloses an optical fiber airtightly leading out method for a GIS cavity, and provides a scheme for leading out a tail fiber of an optical element in GIS application. In the scheme, the tail fiber of the optical element in the GIS cavity is subjected to metal packaging, and a metal packaging structure comprises a metal optical fiber, a metal pipe and the like; the metal pipe passes through optical fiber through holes on a mounting flange and an optical fiber leading out flange positioned on the GIS cavity in turn, and the optical fiber through holes are sealed and cured by epoxy resin glue; and the tail fiber leading out parts of the metal optical fiber and the metal pipe are provided with protective devices additionally. In the method, the metal optical fiber packaging technology is applied to the optical element in the GIS cavity of a power system for the first time, the airtightness problem generated when the optical fiber of the GIS cavity is led out is effectively solved, stress applied to the optical fiber is reduced, the balance of the stress of the optical fiber is ensured, the pressive strength and the insulating property of the GIS system are ensured, and the reliability of the GIS system is improved.
Description
Technical field
The present invention relates to a kind ofly adopt follow-on metallization packaged technology that the optical fiber of GIS cavity is carried out airtight method of drawing.
Background technology
In recent years, in electric system GIS uses, optical element since himself good insulating property by enterprise, colleges and universities etc. extensively adopt both at home and abroad.In order to ensure the reliability of generalized information system, generally adopt the higher sulfur hexafluoride (SF of arc extinguishing ability and dielectric strength
6) gas fills.General, SF
6The specified operating pressure of gas is 0.11～0.70MPa, and year leak rate will produce the airtight problem of the optical fiber of optical element at GIS cavity exit less than 1% thereupon.Present Sealing Technology is directly to adopt glue that the optical fiber exit is cured basically, although this method has guaranteed the impermeability of GIS cavity, has SF
6Air pressure and glue are too big to the stress of optical fiber effect, cause fibercuts and damage easily, reduce problems such as generalized information system reliability.Therefore how to guarantee that the impermeability of GIS cavity is the key point of whole generalized information system reliability service.
At present, optical fiber metallization packaged technology generally is used for many application such as optical fiber level Hermetic Package box, and in these application modes, there is not inside and outside pressure differential in the level Hermetic Package place, the compressive strength of metallization optical fiber is required very low, thereby less demanding to the optical fiber metallization packaged.As number of patent application is 200420057817.4, name is called a kind of metallization packaged structure of the patent disclosure of " optical fiber sensitive element metallization packaged structure ", this structure only metallizes to the optical fiber sensitive element and has carried out simple narration, does not consider airtight environment, air pressure conditions in the real world applications.But in generalized information system, because SF
6Air pressure is higher than ambient air pressure, adopts this kind optical fiber metallization packaged technology can not meet the demands fully.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide that a kind of impermeability is good, optic fibre force is balanced, can guarantee the optical fiber airtightly leading out method of the compressive strength and the insulating property of GIS cavity.
Technical solution of the present invention is: a kind of optical fiber airtightly leading out method of the GIS of being used for cavity, and step is as follows:
(1) go up installation optical fiber at the mounting flange (4) of GIS cavity (1) and draw flange (2), optical fiber is drawn and is undertaken airtight by O-ring seal (5) between flange (2) and the mounting flange (4);
(2) draw the fine reach through hole (7) of center polishing of flange (2) at optical fiber, described optical fiber reach through hole (7) pass mounting flange (4) and with the internal communication of GIS cavity (1);
(3) tail optical fiber with optical element in the GIS cavity (1) carries out metallization packaged formation metallization optical fiber (3), goes up socket metal tube (6) at metallization optical fiber (3) then, welds together by brazing metal between metallization optical fiber (3) and the metal tube (6);
(4) metal tube (6) is passed optical fiber reach through hole (7), and adopt bicomponent epoxy resin glue that optical fiber reach through hole (7) is carried out embedding to solidify, make the space of bicomponent epoxy resin glue complete filling optical fiber reach through hole (7);
(5) structure that step (4) is obtained is heat-treated, and makes bicomponent epoxy resin glue reach steady state (SS);
(6) to metallization optical fiber (3) and metal tube (6) additional protection means after solidifying.
Adopt bicomponent epoxy resin glue that optical fiber reach through hole (7) is carried out needing bicomponent epoxy resin glue is carried out pre-service before embedding is solidified in the described step (4), method is: at first mix nickel powder in bicomponent epoxy resin glue, the weight ratio of nickel powder and bicomponent epoxy resin glue is 1: 2, by hydro-extractor the bicomponent epoxy resin glue that mixes behind the nickel powder is carried out centrifugal coming unstuck then, centrifuge speed is 1800 commentaries on classics/min～2100 commentaries on classics/min, and the duration is 4～10min.
Described metal tube (6) is the nickel pipe.
The method of heat-treating in the described step (5) is: the structure that step (4) is obtained is put into the heating in vacuum case and was kept 0.5～1 hour, and the vacuum tightness in the heating in vacuum case is 0.2 * 10
5～0.8 * 10
5Pa, heating-up temperature is 60～90 ℃, after 0.5～1 hour, is adjusted to 100～130 ℃ on the temperature with the heating in vacuum case, and the duration is 20～40 minutes, and the vacuum tightness in the heating in vacuum case remains unchanged; To store 12～36 hours down at 65～85 ℃ through the structure after the vacuum heating treatment subsequently, at last, temperature rate with 10 ℃/min carries out circular treatment to the structure after storing 12～36 hours in-55 ℃～85 ℃ temperature range, circulate altogether 8～12 times.
The trade mark of described bicomponent epoxy resin glue is 353ND.
The present invention's advantage compared with prior art is:
(1) the inventive method has adopted optical fiber metallization packaged technology and has been applied to the optical element of GIS cavity, this method has solved the problem of GIS cavity optical element impermeability difficulty, optic fibre force inequality effectively, make optical element and metallization optical fiber integration simultaneously, reduce welded joint, helped the reliable and stable of generalized information system;
(2) pre-service carried out before curing of the inventive method has been avoided leaking because of the optical fiber exit gas that draught head caused that GIS cavity and external environment exist, and has guaranteed the compressive strength and the insulating property of generalized information system;
(3) the inventive method is that the bicomponent epoxy resin glue of 353ND is heat-treated to the trade mark that is adopted, and has greatly reduced glue to the metallization stress that optical fiber produced, and has avoided metallization fibercuts and damage phenomenon, has improved the reliability of metallization optical fiber.
Description of drawings
Fig. 1 carries out airtight structural representation of drawing for adopting the inventive method to the optical fiber of GIS cavity;
Fig. 2 is the vertical view of structure shown in Figure 1;
Fig. 3 draws the cut-open view of flange inner structure for optical fiber among the present invention.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the synoptic diagram when adopting the inventive method that the optical fiber of GIS cavity is carried out airtight drawing.
At first need an optical fiber to draw flange 2, optical fiber is drawn and is left the threaded hole that solidifies with mounting flange 4 on the flange 2, and is undertaken airtight by O-ring seal 5 and mounting flange 4.The center that optical fiber is drawn the mounting flange 4 of flange 2 and GIS cavity 1 has the optical fiber reach through hole 7 of connection.
Secondly, the tail optical fiber of optical element in the GIS cavity 1 is directly carried out metallization packaged, make its inner optical element integrated with metallization optical fiber 3, the metallization packaged structure comprises metallization optical fiber 3 and metal tube 6, metal tube 6 adopts the nickel pipe, and with between brazing metal complete filling metallization optical fiber 3 and the metal tube 6.Adopt this kind method for packing can solve the impermeability of GIS cavity 1 optical element tail optical fiber extension, very big a part of stress can act on the metal tube 6 simultaneously, has reduced the stress that metallization optical fiber 3 bears.
Subsequently metal tube 6 is passed successively the optical fiber reach through hole 7 that the mounting flange 4 that is positioned on the GIS cavity 1 and optical fiber are drawn flange 2.Be that the bicomponent epoxy resin glue of 353ND carries out embedding to optical fiber reach through hole 7 and solidifies with the trade mark again: before the curing, for under the situation of the temperature that does not change bicomponent epoxy resin glue, viscosity characteristics, make the linear expansion coefficient of bicomponent epoxy resin glue and the linear expansion coefficient of nickel pipe reach coupling, earlier mix nickel powder in bicomponent epoxy resin glue, the weight ratio of nickel powder and bicomponent epoxy resin glue is 1: 2; By hydro-extractor bicomponent epoxy resin glue is carried out centrifugal coming unstuck again, eliminate the air bubble in the bicomponent epoxy resin glue, wherein, centrifuge speed is 1800 commentaries on classics/min～2100 commentaries on classics/min, duration is 4～10min, and centrifuge speed is 2000 commentaries on classics/min in the test, and the duration is 5 minutes, centrifuge speed, the time can not be too high, the too high two component layerings that make easily in the glue.Certainly, except 353ND glue, that can also select other for use has bonding and solidifies the bicomponent epoxy resin glue of function herein.
During curing, with the space of bicomponent epoxy resin glue complete filling optical fiber reach through hole 7.After mixing nickel powder, the flowability of glue reduces, and in order to eliminate the bubble between bicomponent epoxy resin glue and optical fiber reach through hole 7, metal tube 6 spaces, the structure that above-mentioned steps is obtained is put into the heating in vacuum case and kept 0.5～1h, usually get 1h, the vacuum tightness in the heating in vacuum case is 0.2 * 10
5～0.8 * 10
5Pa is 0.5 * 10 in the test
5Pa, the too high meeting of vacuum tightness makes the effective constituent volatilization in the bicomponent epoxy resin glue, and heating-up temperature is 60～90 ℃, needs slowly to heat up owing to solidify, and in order to reduce the stress that bicomponent epoxy resin glue is introduced, gets 80 ℃ in the test simultaneously; 0.5 behind～the 1h, usually get 1h, be adjusted to 100～130 ℃ on the temperature with the heating in vacuum case, duration is 20～40min, vacuum tightness in the heating in vacuum case remains unchanged, and in fact the temperature of heating in vacuum case is adjusted to 120 ℃ in the test, and the duration is half an hour, bicomponent epoxy resin glue can full solidification like this, the stress minimum of generation.
After the adhesive curing, in order to remove the unrelieved stress of bicomponent epoxy resin glue, make glue finally reach reliable and stable state, the bicomponent epoxy resin glue in the structure that above step is obtained carries out burin-in process, store 12～36h down at 65～85 ℃ earlier, get 80 ℃ of storage 24h down usually; At last, in-55 ℃～85 ℃ temperature range the structure behind the storage 24h is carried out circular treatment with the temperature rate of 10 ℃/min, circulate altogether 8～12 times,, optimized performance minimum for the crash rate that makes bicomponent epoxy resin glue are got in the test 10 times.
At last optical fiber is drawn flange 2 and be solidificated on the mounting flange 4, install the metal tube 6 that solidifies the tail optical fiber extension additional, draw by the corrugated tube optical fiber 3 that will metallize again with tin hat by screw.
Among Fig. 1, the agent structure of GIS cavity 1 is a column type, and mounting flange 4 and optical fiber are drawn the upper surface that flange 2 is positioned at GIS cavity 1 successively, and for application flexibility, mounting flange 4 and optical fiber are drawn the side that flange 2 also can be positioned at GIS cavity 1 successively.
Among Fig. 2,3, in order to reduce the stress that glue produces metallization optical fiber 3, must select for use linear expansion coefficient and optical fiber to draw the close and Heat stability is good of the linear expansion coefficient of the linear expansion coefficient of flange 2, metal tube 6, the wide material of temperature range, such as the bicomponent epoxy resin glue of 353ND.
The content that is not described in detail in the instructions of the present invention belongs to those skilled in the art's known technology.
Claims (5)
1. optical fiber airtightly leading out method that is used for the GIS cavity is characterized in that step is as follows:
(1) go up installation optical fiber at the mounting flange (4) of GIS cavity (1) and draw flange (2), optical fiber is drawn and is undertaken airtight by O-ring seal (5) between flange (2) and the mounting flange (4);
(2) draw the fine reach through hole (7) of center polishing of flange (2) at optical fiber, described optical fiber reach through hole (7) pass mounting flange (4) and with the internal communication of GIS cavity (1);
(3) tail optical fiber with optical element in the GIS cavity (1) carries out metallization packaged formation metallization optical fiber (3), goes up socket metal tube (6) at metallization optical fiber (3) then, welds together by brazing metal between metallization optical fiber (3) and the metal tube (6);
(4) metal tube (6) is passed optical fiber reach through hole (7), and adopt bicomponent epoxy resin glue that optical fiber reach through hole (7) is carried out embedding to solidify, make the space of bicomponent epoxy resin glue complete filling optical fiber reach through hole (7);
(5) structure that step (4) is obtained is heat-treated, and makes bicomponent epoxy resin glue reach steady state (SS);
(6) to metallization optical fiber (3) and metal tube (6) additional protection means after solidifying.
2. a kind of optical fiber airtightly leading out method that is used for the GIS cavity according to claim 1, it is characterized in that: adopt bicomponent epoxy resin glue that optical fiber reach through hole (7) is carried out needing bicomponent epoxy resin glue is carried out pre-service before embedding is solidified in the described step (4), method is: at first mix nickel powder in bicomponent epoxy resin glue, the weight ratio of nickel powder and bicomponent epoxy resin glue is 1: 2, by hydro-extractor the bicomponent epoxy resin glue that mixes behind the nickel powder is carried out centrifugal coming unstuck then, centrifuge speed is 1800 commentaries on classics/min～2100 commentaries on classics/min, and the duration is 4～10min.
3. a kind of optical fiber airtightly leading out method that is used for the GIS cavity according to claim 1 and 2 is characterized in that: described metal tube (6) is the nickel pipe.
4. a kind of optical fiber airtightly leading out method that is used for the GIS cavity according to claim 1 and 2, it is characterized in that: the method for heat-treating in the described step (5) is: the structure that step (4) is obtained is put into the heating in vacuum case and was kept 0.5～1 hour, and the vacuum tightness in the heating in vacuum case is 0.2 * 10
5～0.8 * 10
5Pa, heating-up temperature is 60～90 ℃, after 0.5～1 hour, is adjusted to 100～130 ℃ on the temperature with the heating in vacuum case, and the duration is 20～40 minutes, and the vacuum tightness in the heating in vacuum case remains unchanged; To store 12～36 hours down at 65～85 ℃ through the structure after the vacuum heating treatment subsequently, at last, temperature rate with 10 ℃/min carries out circular treatment to the structure after storing 12～36 hours in-55 ℃～85 ℃ temperature range, circulate altogether 8～12 times.
5. a kind of optical fiber airtightly leading out method that is used for the GIS cavity according to claim 1 and 2 is characterized in that: the trade mark of described bicomponent epoxy resin glue is 353ND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102370426A CN101710201B (en) | 2009-11-02 | 2009-11-02 | Optical fiber airtightly leading out method for GIS cavity |
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|---|---|---|---|
| CN2009102370426A CN101710201B (en) | 2009-11-02 | 2009-11-02 | Optical fiber airtightly leading out method for GIS cavity |
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| CN101710201B CN101710201B (en) | 2011-01-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832704A (en) * | 2012-11-22 | 2014-06-04 | 福州高意通讯有限公司 | Optical fiber element packaging box |
| CN104359416A (en) * | 2014-11-13 | 2015-02-18 | 上海飞机制造有限公司 | Online detection device and method for thermal deformation of autoclave technological mould |
| CN112415690A (en) * | 2020-12-09 | 2021-02-26 | 中国科学院上海微系统与信息技术研究所 | Lossless optical fiber introduction vacuum protection device and vacuum equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802928A (en) * | 2018-05-25 | 2018-11-13 | 北京航天时代光电科技有限公司 | A kind of reusable integrated form optical fiber air seal flange |
-
2009
- 2009-11-02 CN CN2009102370426A patent/CN101710201B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832704A (en) * | 2012-11-22 | 2014-06-04 | 福州高意通讯有限公司 | Optical fiber element packaging box |
| CN103832704B (en) * | 2012-11-22 | 2016-08-03 | 福州高意通讯有限公司 | A kind of fiber optic component packing box |
| CN104359416A (en) * | 2014-11-13 | 2015-02-18 | 上海飞机制造有限公司 | Online detection device and method for thermal deformation of autoclave technological mould |
| CN112415690A (en) * | 2020-12-09 | 2021-02-26 | 中国科学院上海微系统与信息技术研究所 | Lossless optical fiber introduction vacuum protection device and vacuum equipment |
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| Publication number | Publication date |
|---|---|
| CN101710201B (en) | 2011-01-12 |
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Effective date of registration: 20180731 Address after: 211106 2 2 integrity Avenue, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu. Patentee after: NARI Technology Development Co., Ltd. Address before: 100085 room 103, 19 Middle Road, Haidian District, Beijing. Patentee before: NAE (Beijing) Electric Control Technology Ltd. |
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