CN202003056U - Connecting device of underground optical fiber cables - Google Patents
Connecting device of underground optical fiber cables Download PDFInfo
- Publication number
- CN202003056U CN202003056U CN2011200439862U CN201120043986U CN202003056U CN 202003056 U CN202003056 U CN 202003056U CN 2011200439862 U CN2011200439862 U CN 2011200439862U CN 201120043986 U CN201120043986 U CN 201120043986U CN 202003056 U CN202003056 U CN 202003056U
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- Prior art keywords
- optical cable
- hole
- optical fiber
- pressing cap
- metal pipe
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Abstract
The utility model relates to a connecting device of underground optical fiber cables, characterized by comprising a metal protection tube. The two ends of the metal protection tube are equipped with sealing and fastening devices used for connecting the optical fiber cables respectively, each sealing and fastening device has a set of front pressure caps arranged at the end of the metal protection tube, and an annulus between the front pressure caps and the metal protection tube is equipped with a front sealing sleeve and a front fastening sleeve; the front pressure caps are connected with a connecting sleeve via screw threads, the other end of the connecting sleeve is connected with a back pressure cap via screw threads, and the optical fiber cables pass through the back pressure cap and the connecting sleeve to be connected in the end of the metal protection tube; the annulus between the back pressure cap and the optical fiber cables is equipped with a back fastening sleeve and a back sealing sleeve, and the solder joints of the optical fibers in the optical fiber cables are arranged in the middle of the metal protection tube. The connecting device of underground optical fiber cables of the utility model is simple in structure design, small in volume, and convenient in assembling, can prevent the optical fibers from being exposed directly in the harsh underground environment, and reduce or avoid the effects of the harsh condition on the optical fiber performance, so that the connecting device of underground optical fiber cables can be widely used in the connections of underground optical fiber cables.
Description
Technical field
The utility model 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 approved that extensively its utilization in oil field will become a kind of trend.
But because the condition of down-hole is very harsh, for example High Temperature High Pressure, 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 may 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 welding between the optical fiber will inevitably take place in the needs such as prolongation of optical cable, it is easier to be more impaired than no solder joint place that optical fiber solder joint place, welding back takes 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, also needs the inconvenience that reduces or avoid this kind protector that underground work is brought as far as possible.
Summary of the invention
At the problems referred to above, it is little, easy to assembly that the purpose of this utility model provides 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 achieving the above object, the utility model is taked following technical scheme: a kind of down-hole optical cable coupling arrangement, and it is characterized in that: it comprises a protection metal pipe, described protection metal pipe two ends are respectively arranged with one and are used to connect the sealing optical fiber cables fastener; Each described sealing fastening device includes a front pressing cap that is set in described metal coating tube end, sealing shroud and preceding cutting ferrule before the annular space between described front pressing cap and the described protection metal pipe is provided with; Described front pressing cap is by the adapter sleeve that is threaded; the other end of described adapter sleeve is by the rear pressing cap that is threaded; described optical cable passes described rear pressing cap and adapter sleeve is connected in the end of described protection metal pipe; annular space between described rear pressing cap and the described optical cable is provided with back cutting ferrule and back sealing shroud, and the solder joint place of described optical cable inner fiber is arranged on the middle part of described protection metal pipe.
Be provided with in the described adapter sleeve and be used for the through hole that described optical cable passes, the two ends of described adapter sleeve are provided with external thread, and the porch, two ends is taper shape, circumferentially are provided with the projection of holding clamp outside the middle part of described adapter sleeve.
Described 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 described adapter sleeve.
Sealing shroud and back sealing shroud are the flange becket before described.
The outside of cutting ferrule and back cutting ferrule is conical before described, and inside is provided with cylindrical hole.
Described protection metal pipe is one deck at least, adopts a kind of material in stainless steel and the high-carbon steel to make.
The utility model is owing to take above technical scheme; it has the following advantages: 1, the utility model is because the sealing fastening device that is provided with by 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 utility model seals the junction simultaneously owing to adopt sealing fastening device to connect protection metal pipe and optical cable by the metallic seal mode, and assembling, debugging are convenient in metallic seal mode pressure-bearing grade height, difficult inefficacy under mal-condition.3, the utility model 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 a very large impact function pipeline in the down-hole.The utility model structural design 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 the utility model structural representation
Fig. 2 is the local enlarged diagram of Fig. 1 midship section part
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1, the utility model comprises a protection metal pipe 1, and protection metal pipe 1 two ends are respectively arranged with a sealing fastening device 2.Protection metal pipe 1 connects optical cable 3 by the sealing fastening device 2 of its end.
As shown in Figure 2, each sealing fastening device 2 includes a front pressing cap 4 that is set in protection metal pipe 1 end, 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 by the adapter sleeve 7 that is threaded, and the other end of adapter sleeve 7 is by 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 projection of holding clamp outside adapter sleeve 7 middle parts.
In the foregoing description, front pressing cap 4 all has two sections inner chambers that diameter is different 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 and back sealing shroud 5 are the flange becket, and the outside of preceding cutting ferrule 7 and back cutting ferrule 9 is conical, and inside is provided with cylindrical hole.
In the foregoing description; protection metal pipe 1 can be the single or multiple lift metal; in upwards sealing fully of week; the metal that protection metal pipe 1 can adopt high strength anticorrosive wear-resistants such as stainless steel, high-carbon steel to decrease is made; 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 and rear pressing cap 8 all are fastened on the adapter sleeve 7 with thread connecting mode; before sealing shroud 5 and preceding cutting ferrule 6 be subjected to 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 be subjected to rear pressing cap 8 support the end pressure distortion after, between optical cable 3 and adapter sleeve 7, form metallic seal.
The various embodiments described above only are used to illustrate the utility model; the structure of each parts, size, the position is set and shape all can change to some extent; on the basis of technical solutions of the utility model; all improvement and equivalents of individual component being carried out according to the utility model principle all should not got rid of outside protection domain of the present utility model.
Claims (10)
1. down-hole optical cable coupling arrangement, it is characterized in that: it comprises a protection metal pipe, described protection metal pipe two ends are respectively arranged with one and are used to connect the sealing optical fiber cables fastener;
Each described sealing fastening device includes a front pressing cap that is set in described metal coating tube end, sealing shroud and preceding cutting ferrule before the annular space between described front pressing cap and the described protection metal pipe is provided with; Described front pressing cap is by the adapter sleeve that is threaded; the other end of described adapter sleeve is by the rear pressing cap that is threaded; described optical cable passes described rear pressing cap and adapter sleeve is connected in the end of described protection metal pipe; annular space between described rear pressing cap and the described optical cable is provided with back cutting ferrule and back sealing shroud, and the solder joint place of described optical cable inner fiber is arranged on the middle part of described protection metal pipe.
2. down-hole as claimed in claim 1 optical cable coupling arrangement, it is characterized in that: be provided with in the described adapter sleeve and be used for the through hole that described optical cable passes, the two ends of described adapter sleeve are provided with external thread, and the porch, two ends is taper shape, circumferentially is provided with the projection of holding clamp outside the middle part of described adapter sleeve.
3. down-hole as claimed in claim 1 optical cable coupling arrangement, it is characterized in that: described front pressing cap and rear pressing cap all have the inner chamber of two sections different-diameters, 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 described adapter sleeve.
4. down-hole as claimed in claim 2 optical cable coupling arrangement, it is characterized in that: described front pressing cap and rear pressing cap all have the inner chamber of two sections different-diameters, 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 described adapter sleeve.
5. as claim 1 or 2 or 3 or 4 described down-hole optical cable coupling arrangements, it is characterized in that: sealing shroud and back sealing shroud are the flange becket before described.
6. as claim 1 or 2 or 3 or 4 described down-hole optical cable coupling arrangements, it is characterized in that: the outside of cutting ferrule and back cutting ferrule is conical before described, and inside is provided with cylindrical hole.
7. down-hole as claimed in claim 5 optical cable coupling arrangement is characterized in that: the outside of cutting ferrule and back cutting ferrule is conical before described, and inside is provided with cylindrical hole.
8. as claim 1 or 2 or 3 or 4 or 7 described down-hole optical cable coupling arrangements, it is characterized in that: described protection metal pipe is one deck at least, adopts a kind of material in stainless steel and the high-carbon steel to make.
9. down-hole as claimed in claim 5 optical cable coupling arrangement, it is characterized in that: described protection metal pipe is one deck at least, adopts a kind of material in stainless steel and the high-carbon steel to make.
10. down-hole as claimed in claim 6 optical cable coupling arrangement, it is characterized in that: described protection metal pipe is one deck at least, adopts a kind of material in stainless steel and the high-carbon steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200439862U CN202003056U (en) | 2011-02-22 | 2011-02-22 | Connecting device of underground optical fiber cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200439862U CN202003056U (en) | 2011-02-22 | 2011-02-22 | Connecting device of underground optical fiber cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003056U true CN202003056U (en) | 2011-10-05 |
Family
ID=44705792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200439862U Expired - Lifetime CN202003056U (en) | 2011-02-22 | 2011-02-22 | Connecting device of underground optical fiber cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003056U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676054A (en) * | 2013-12-13 | 2014-03-26 | 山东省科学院激光研究所 | Optical cable connecting device special for oil field |
| CN103823283A (en) * | 2013-12-11 | 2014-05-28 | 北京康华盛鸿能源科技发展有限公司 | Method and device for underground multicore optical cable fast connection |
| CN105143942A (en) * | 2013-03-13 | 2015-12-09 | 3M创新有限公司 | Sealing tube for cable entry port |
| CN109578583A (en) * | 2019-01-25 | 2019-04-05 | 北京瑞莱博石油技术有限公司 | A kind of high-temperature and high-presure resistent hole multi-measuring point sealing structure |
-
2011
- 2011-02-22 CN CN2011200439862U patent/CN202003056U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105143942A (en) * | 2013-03-13 | 2015-12-09 | 3M创新有限公司 | Sealing tube for cable entry port |
| CN103823283A (en) * | 2013-12-11 | 2014-05-28 | 北京康华盛鸿能源科技发展有限公司 | Method and device for underground multicore optical cable fast connection |
| CN103823283B (en) * | 2013-12-11 | 2016-04-06 | 北京康华盛鸿能源科技发展有限公司 | A kind of method and apparatus connected fast for down-hole multifiber cable |
| CN103676054A (en) * | 2013-12-13 | 2014-03-26 | 山东省科学院激光研究所 | Optical cable connecting device special for oil field |
| 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 |
| CN109578583A (en) * | 2019-01-25 | 2019-04-05 | 北京瑞莱博石油技术有限公司 | A kind of high-temperature and high-presure resistent hole multi-measuring point sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| 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. |
|
| 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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |