CN102073107B - Underground optical cable connecting device - Google Patents
Underground optical cable connecting device Download PDFInfo
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- CN102073107B CN102073107B CN2011100428519A CN201110042851A CN102073107B CN 102073107 B CN102073107 B CN 102073107B CN 2011100428519 A CN2011100428519 A CN 2011100428519A CN 201110042851 A CN201110042851 A CN 201110042851A CN 102073107 B CN102073107 B CN 102073107B
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- optical cable
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- pressing cap
- hole
- metal pipe
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Abstract
The invention relates to an underground optical cable connecting device which is characterized by comprising a metal protecting tube, wherein two ends of the metal protecting tube are respectively provided with sealed fastening devices which are used for connecting the optical cables; each of the sealed fastening devices comprises a front clamping nut which is sleeved on the end part of the metal protecting tube; a front sealing sleeve and a front clamping sleeve are arranged in an annular space between the front clamping nut and the metal protecting tube; the front clamping nut is connected with a connecting sleeve via a thread; the other end of the connecting sleeve is connected with a back clamping nut via the thread; the optical cable is connected in the end part of the metal protecting tube after passing through the back clamping nut and the connecting sleeve; a back clamping sleeve and a back sealing sleeve are arranged in the annular space between the back clamping nut and the optical cable; and the welding point of the optical fiber in the optical cable is arranged at the central part of the metal protecting tube. The underground optical cable connecting device simple in structure design, small in volume and convenient in assembly; the underground optical cable connecting device is cable of protecting the optical fiber from directly exposing in rigorous underground environment, reducing or avoiding the influence caused by the severe conditions to the optical fiber performance; therefore, the underground optical cable connecting device can be widely used for underground cable connection.
Description
Technical field
The present invention relates to a kind of coupling arrangement that is used for oil gas well optical cable, particularly about a kind of down-hole optical cable coupling arrangement that is used to protect the optical cable solder joint.
Background technology
In recent years, optical fiber technology is widely used in various fields, and this is that optical fiber has very big raising on information transmission, the quality of reception and transmission speed because of the operating position with respect to former electronic conductor.Along with the development of oilfield exploitation technology, the application of optical fiber technology in the recover petroleum rock gas is by extensively approval, and its utilization in oil field will become a kind of trend.
But because the condition of down-hole is very harsh, for example HTHP, vibration, corrosive fluid etc., these conditions separately or under the acting in conjunction, it is impaired that optical fiber is easy to, cause the inefficacy in advance of using at other field with respect to optical fiber.After acting on the optical fiber, hydrogen ion in the fiber work environment can cause the increase of fiber transmission attenuation; The outer hydrogen ion of optical cable also can penetrate into optical cable and make optical fiber produce hydrogen loss in addition; And optical cable itself also maybe since in the material effects such as the degraded, electrochemical metal corrosion of polymkeric substance separately or the common hydrogen that optical fiber is caused damage that produces, so need minimizing or avoid contacting of optical fiber and hydrogen environment.According to optical fiber and Fibre Optical Sensor be connected and the welding between the optical fiber will inevitably take place in the needs such as prolongation of optical cable; Optical fiber solder joint place, welding back takes place more to be prone to impaired than no solder joint place; Therefore, need the strict influence of avoiding the down-hole rugged surroundings that optical fiber solder joint place is produced.Because the down-hole optical cable is in the narrow and small pit shaft, the physical dimension of this kind protector needs enough little, so that assembly and adjustment, when optical fiber is isolated from the outside, the inconvenience that also need reduce as far as possible or avoid this kind protector that underground work is brought.
Summary of the invention
To the problems referred to above, it is little, easy to assembly to the purpose of this invention is to provide a kind of volume, can protect optical fiber not to be directly exposed in the rigorous environment of down-hole, the down-hole optical cable coupling arrangement that reduces or avoid mal-condition that optical fiber property is impacted.
For realizing above-mentioned purpose, the present invention takes following technical scheme: a kind of down-hole optical cable coupling arrangement, and it is characterized in that: it comprises a protection metal pipe, said protection metal pipe two ends are respectively arranged with one and are used to connect the sealing optical fiber cables fastener; Each said sealing fastening device include one be set in said metal coating tube end front pressing cap, sealing shroud and preceding cutting ferrule before the annular space between said front pressing cap and the said protection metal pipe is provided with; Said front pressing cap is through the adapter sleeve that is threaded; The other end of said adapter sleeve is through the rear pressing cap that is threaded; Said optical cable passes said rear pressing cap and adapter sleeve is connected in the end of said protection metal pipe; Annular space between said rear pressing cap and the said optical cable is provided with back cutting ferrule and back sealing shroud, and the solder joint place of said optical cable inner fiber is arranged on the middle part of said protection metal pipe.
Be provided with in the said adapter sleeve and be used for the through hole that said optical cable passes, the two ends of said adapter sleeve are provided with external thread, and the porch, two ends is taper shape, circumferentially are provided with the convexity of holding clamp outside the middle part of said adapter sleeve.
Said front pressing cap and rear pressing cap all have the inner chamber of two sections different-diameters, and two sections inner chamber junctions are provided with an inclined-plane, and wherein, the major diameter inner chamber is provided with the screw thread that is connected with said adapter sleeve.
Sealing shroud is the flange becket with the back sealing shroud before said.
The outside of cutting ferrule and back cutting ferrule is conical before said, and set inside has cylindrical hole.
Said protection metal pipe is one deck at least, adopts a kind of material in stainless steel and the high-carbon steel to process.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention is because the sealing fastening device that is provided with through the protection metal pipe both ends connects optical cable; Make the pad of the optical fiber that passes through in the optical cable be arranged on the middle part of protection metal pipe, therefore, not only easy to assembly; And can limited optical fiber and extraneous rugged surroundings be isolated, guarantee the operate as normal at optical fiber solder joint place.2, the present invention seals the junction owing to adopting sealing fastening device to connect protection metal pipe and optical cable simultaneously through the metallic seal mode, and assembling, debugging are convenient in high, the difficult inefficacy under mal-condition of metallic seal mode pressure-bearing grade.3, the present invention is arranged on middle part in the protection metal pipe with the optical fiber pad, and the external diameter of protection metal pipe is little, therefore, can not take very big space, down-hole, and very light in weight, can not produce very big influence to function pipeline in the down-hole.Structural design of the present invention is simple, and volume is little, and is easy to assembly, can protect optical fiber not to be directly exposed in the rigorous environment of down-hole, reduces or avoids mal-condition that optical fiber property is impacted, during the optical cable that therefore can be widely used in the down-hole connects.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the local enlarged diagram of Fig. 1 midship section part
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
As shown in Figure 1, the present invention includes a protection metal pipe 1, protection metal pipe 1 two ends are respectively arranged with a sealing fastening device 2.Protection metal pipe 1 connects optical cable 3 through the sealing fastening device 2 of its end.
As shown in Figure 2, each sealing fastening device 2 include one be set in protection metal pipe 1 end front pressing cap 4, sealing shroud 5 and preceding cutting ferrule 6 before the annular space between front pressing cap 4 and the protection metal pipe 1 is provided with; Front pressing cap 4 is through the adapter sleeve 7 that is threaded, and the other end of adapter sleeve 7 is through the rear pressing cap 8 that is threaded, and optical cable 3 passes rear pressing cap 8 and adapter sleeve 7, is connected in the end of protection metal pipe 1.Annular space between rear pressing cap 8 and the optical cable 3 is provided with back cutting ferrule 9 and back sealing shroud 10.The solder joint place of optical cable 3 inner fibers 11 is arranged on the middle part of protection metal pipe 1.
In the foregoing description; Be provided with through hole in the adapter sleeve 7; Through hole one side diameter is greater than protection metal pipe 1 external diameter, the opposite side diameter greater than fastening optical cable 3 overall diameters, the porch, two ends of adapter sleeve 7 is taper shape; Adapter sleeve 7 two ends are provided with external thread, circumferentially are provided with the convexity of holding clamp outside adapter sleeve 7 middle parts.
In the foregoing description, front pressing cap 4 all has two sections diameter different inner cavities with rear pressing cap 8, and two sections inner chamber junctions are provided with an inclined-plane; Wherein, The major diameter inner chamber is provided with the screw thread that is connected with adapter sleeve 2, and the port of major diameter inner chamber is a link, and the port of minor diameter inner chamber is for supporting end.
In the foregoing description, preceding sealing shroud 8 is the flange becket with back sealing shroud 5, and the outside of preceding cutting ferrule 7 and back cutting ferrule 9 is conical, the set inside cylindrical hole.
In the foregoing description; Protection metal pipe 1 can be the single or multiple lift metal; In upwards sealing fully of week, protection metal pipe 1 can adopt the anti abrasive metals of high-strength corrosion-resisting such as stainless steel, high-carbon steel to process, and can resist the undesirable element in the environment; And have good tensile strength and compressive strength, can support and protect optical fiber solder joint part wherein.
The method of attachment of down-hole optical cable is:
The end of protection metal pipe 1 is passed front pressing cap 4, preceding sealing shroud 5 and preceding cutting ferrule 6 successively; Optical cable 3 passes rear pressing cap 8, back cutting ferrule 9 and back sealing shroud 10 successively; The junction of protection metal pipe 1 end and optical cable 3 is positioned at adapter sleeve 7; And protection metal pipe 1 entangles optical cable 3; Front pressing cap 4 all is fastened on the adapter sleeve 7 with thread connecting mode with rear pressing cap 8, preceding sealing shroud 5 and preceding cutting ferrule 6 receive front pressing cap 4 support the end pressure distortion after, between protection metal pipe 1 and adapter sleeve 7, form metallic seal; Back sealing shroud 10 and back cutting ferrule 9 receive rear pressing cap 8 support the end pressure distortion after, between optical cable 3 and adapter sleeve 7, form metallic seal.
Above-mentioned each embodiment only is used to explain the present invention; The structure of each parts, size, the position is set and shape all can change to some extent; On the basis of technical scheme of the present invention; All improvement and equivalents of individual component being carried out according to the principle of the invention all should not got rid of outside protection scope of the present invention.
Claims (5)
1. down-hole optical cable coupling arrangement, it is characterized in that: it comprises a protection metal pipe, said protection metal pipe two ends are respectively arranged with one and are used to connect the sealing optical fiber cables fastener;
Each said sealing fastening device include one be set in said metal coating tube end front pressing cap, sealing shroud and preceding cutting ferrule before the annular space between said front pressing cap and the said protection metal pipe is provided with; Said front pressing cap is through the adapter sleeve that is threaded, and the other end of said adapter sleeve is through the rear pressing cap that is threaded, and said metal coating tube end is positioned at said adapter sleeve; Said optical cable passes said rear pressing cap and adapter sleeve is connected in the end of said protection metal pipe; Annular space between said rear pressing cap and the said optical cable is provided with back cutting ferrule and back sealing shroud, and the solder joint place of said optical cable inner fiber is arranged on the middle part of said protection metal pipe;
Be provided with in the said adapter sleeve and be used for the through hole that said optical cable passes, the two ends of said adapter sleeve are provided with external thread, and the porch, two ends is taper shape, circumferentially are provided with the convexity of holding clamp outside the middle part of said adapter sleeve;
Said front pressing cap and rear pressing cap all have the inner chamber of two sections different-diameters, and two sections inner chamber junctions are provided with an inclined-plane, and wherein, the major diameter inner chamber is provided with the screw thread that is connected with said adapter sleeve.
2. a kind of down-hole as claimed in claim 1 optical cable coupling arrangement is characterized in that: sealing shroud is the flange becket with the back sealing shroud before said.
3. a kind of down-hole as claimed in claim 1 optical cable coupling arrangement is characterized in that: the outside of cutting ferrule and back cutting ferrule is conical before said, and set inside has cylindrical hole.
4. a kind of down-hole as claimed in claim 2 optical cable coupling arrangement is characterized in that: the outside of cutting ferrule and back cutting ferrule is conical before said, and set inside has cylindrical hole.
5. like claim 1 or 2 or 3 or 4 described a kind of down-hole optical cable coupling arrangements, it is characterized in that: said protection metal pipe is one deck at least, adopts a kind of material in stainless steel and the high-carbon steel to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100428519A CN102073107B (en) | 2011-02-22 | 2011-02-22 | Underground optical cable connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100428519A CN102073107B (en) | 2011-02-22 | 2011-02-22 | Underground optical cable connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102073107A CN102073107A (en) | 2011-05-25 |
| CN102073107B true CN102073107B (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100428519A Active CN102073107B (en) | 2011-02-22 | 2011-02-22 | Underground optical cable connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102073107B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197392B (en) * | 2013-04-02 | 2015-09-30 | 国家电网公司 | Optical cable pillar port sealing bracket |
| CN103676054B (en) * | 2013-12-13 | 2015-08-26 | 山东省科学院激光研究所 | Oil field special optical cable coupling arrangement |
| CN110301976A (en) * | 2019-06-13 | 2019-10-08 | 宋端虹 | A kind of medical endoscope laser optical fiber protecting equipment |
| CN115166918A (en) * | 2022-07-14 | 2022-10-11 | 中油奥博(成都)科技有限公司 | Sealing device for tail end of optical cable in sleeve and mounting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2178185A (en) * | 1985-07-24 | 1987-02-04 | Stc Plc | Optical fibre cable |
| CN1070268A (en) * | 1991-07-29 | 1993-03-24 | 美国电话电报公司 | The closed structure of optical fiber splicing device |
| US5288113A (en) * | 1992-12-24 | 1994-02-22 | Restek Corporation | Connector for capillary tubes having a tapered inner bore |
| CN200958391Y (en) * | 2006-10-20 | 2007-10-10 | 中国石化股份胜利油田分公司采油工艺研究院 | Underground optical-cable connector |
| US20070292082A1 (en) * | 2004-10-29 | 2007-12-20 | Michael Lagace | Optical connector assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3564702B2 (en) * | 2001-08-23 | 2004-09-15 | 住友電気工業株式会社 | Optical cable connection tube |
-
2011
- 2011-02-22 CN CN2011100428519A patent/CN102073107B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2178185A (en) * | 1985-07-24 | 1987-02-04 | Stc Plc | Optical fibre cable |
| CN1070268A (en) * | 1991-07-29 | 1993-03-24 | 美国电话电报公司 | The closed structure of optical fiber splicing device |
| US5288113A (en) * | 1992-12-24 | 1994-02-22 | Restek Corporation | Connector for capillary tubes having a tapered inner bore |
| US20070292082A1 (en) * | 2004-10-29 | 2007-12-20 | Michael Lagace | Optical connector assembly |
| CN200958391Y (en) * | 2006-10-20 | 2007-10-10 | 中国石化股份胜利油田分公司采油工艺研究院 | Underground optical-cable connector |
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| Publication number | Publication date |
|---|---|
| CN102073107A (en) | 2011-05-25 |
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| C06 | Publication | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Patentee after: Beijing Weilanshi Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center Patentee before: Beijing Weilanshi Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Beijing Weilanshi Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Beijing Weilanshi Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210805 Address after: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Address before: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: BEIJING RAYLENS TECHNOLOGY Co.,Ltd. |