CN211180318U

CN211180318U - Magnetized load-bearing detection optical cable

Info

Publication number: CN211180318U
Application number: CN201921731622.6U
Authority: CN
Inventors: 陶明; 乔文玮; 杨恒勇; 吴开明; 方峰; 袁清; 张国宏; 钟力生; 王强; 祁耀斌
Original assignee: Jiangsu Huaneng Cable Co ltd
Current assignee: Jiangsu Huaneng Cable Co ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-08-04
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a magnetization holds lotus exploration cable includes nonrust steel pipe, interior sheath, armor and outer jacket from inside to outside in proper order, the optic fibre has in the stainless steel pipe, interior sheath department is fixed with a plurality of permanent magnets. The utility model discloses an optical cable is applicable to optical cable for sensing systems such as VSP in the pit, visual formation of image logging, distributed temperature measurement, distributed vibration.

Description

Magnetized load-bearing detection optical cable

Technical Field

The utility model relates to a cable field, concretely relates to magnetization holds lotus exploration optical cable.

Background

The optical cable is a cable containing optical fibers, but the optical fibers are not fragile, so that the optical fibers need to be protected by parts such as stainless steel tubes and the like, the load-bearing detection cable is suitable for oil mine detection cables which bear mechanical load and carry out electrical measurement, and the cable is used for the well logging, perforation, coring and other operations of various oil wells and gas wells; it can also be used in oceanographic investigation, river, estuary, water conservancy, hydrological measurement, coal field geological exploration, geothermal logging, etc. The cable is used as a connecting wire for measuring a hanging weight instrument. The optical cable for load bearing detection has higher protection requirements on optical fibers, and the magnetized load bearing detection optical cable contains a permanent magnet, so that the fixation and installation of the permanent magnet are also one of the problems to be solved.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at overcoming the defects of the prior art and providing a magnetized load-bearing detection optical cable.

The technical scheme is as follows: the utility model provides a magnetization holds load detection optical cable, includes stainless steel pipe, interior sheath, armor and outer jacket from inside to outside in proper order, the optical fiber has in the stainless steel pipe, interior sheath department is fixed with a plurality of permanent magnets.

Further, the stainless steel pipe is filled with optical fiber ointment.

Furthermore, the inner protective layer is a modified polypropylene inner protective layer and is extruded outside the stainless steel pipe.

Further, the armor layer is made of inner and outer two-layer high-strength galvanized steel wires.

Further, the outer sheath comprises a first outer sheath and a second outer sheath, and the first outer sheath is located between the armor layer and the second outer sheath.

Further, the stainless steel tube is internally provided with 2 single-mode optical fibers and 2 multimode optical fibers.

Furthermore, the permanent magnets are arranged at the inner protective layer at intervals, and are fixed at the inner protective layer by bonding tapes.

Further, the permanent magnet is magnetic steel.

Further, the set distance is 1 meter.

Furthermore, a fixing support is fixed at the position of the permanent magnet, the fixing support and the permanent magnet are fixed through adhesive glue, the fixing support is provided with a positioning column, a positioning hole is formed in the outer side of the inner protection layer, and the positioning column is matched with the positioning hole.

Has the advantages that: the optical cable is mainly suitable for optical cables for sensing systems such as underground VSP, visual imaging logging, distributed temperature measurement and distributed vibration. The optical cable of the application has a good protection effect on optical fibers and a good magnetization effect.

Drawings

FIG. 1 is a schematic view of a fiber optic cable;

fig. 2 is a partially enlarged view of the area a of fig. 1.

Detailed Description

Reference numerals: 1, an optical fiber; 2, stainless steel pipes; 3, inner protecting layer; 4, permanent magnets; 4.1 fixing support; 5, an armor layer; 6 a first outer jacket; 7 a second outer protective layer.

The utility model provides a magnetization holds load detection optical cable, includes stainless steel pipe 2, interior sheath 3, armor 5 and outer jacket from inside to outside in proper order, the intraductal optic fibre 1 that has of stainless steel, 3 departments of interior sheath are fixed with a plurality of permanent magnets 4. And the stainless steel pipe 2 is filled with optical fiber ointment. The inner protective layer is a modified polypropylene inner protective layer and is extruded outside the stainless steel pipe. The armor layer is made of an inner layer and an outer layer of high-strength galvanized steel wires. The outer protective layer comprises a first outer protective layer 6 and a second outer protective layer 7, and the first outer protective layer is positioned between the armor layer and the second outer protective layer. The stainless steel tube is internally provided with 2 single-mode optical fibers and 2 multi-mode optical fibers. The permanent magnets are arranged at the inner protective layer at intervals of a certain distance and are fixedly bonded at the inner protective layer by bonding belts. The permanent magnet is magnetic steel. The set distance is 1 meter.

The utility model discloses a magnetization bears load and surveys optic cable with 2 single mode +2 multimode high temperature resistant optic fibre, single mode fiber and multimode fiber place in 2.2 mm's stainless steel pipe, and the optical fiber extra length is about 4 permillage, and single mode fiber attenuation index 1310nm is less than or equal to 0.40dB/km, and 1550nm is less than or equal to 0.25dB/km, and multimode fiber attenuation index 850nm is less than or equal to 3.5dB/km, and 1300nm is less than or equal to 1.0 dB/km; high-temperature resistant optical fiber factice is filled in the stainless steel pipe to protect the optical fiber; a section of 48SH magnetic steel is placed on the inner protection layer every 1 m and is wrapped by a high-temperature resistant adhesive tape; two layers of high-strength galvanized steel wires in opposite directions are adopted outside the magnetized optical fiber inner core as armor layers, and the armor layers are used as protective armor of the optical fiber inner core and can bear mechanical load; the tensile strength of the monofilament is greater than 2160MPa, and the integral breaking tension of the cable is greater than 95 KN. The optical cable is mainly suitable for optical cables for sensing systems such as underground VSP, visual imaging logging, distributed temperature measurement and distributed vibration.

Although the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

Claims

1. The magnetization load-bearing detection optical cable is characterized by sequentially comprising a stainless steel pipe, an inner protection layer, an armor layer and an outer protection layer from inside to outside, wherein an optical fiber is arranged in the stainless steel pipe, and a plurality of permanent magnets are fixed at the inner protection layer.

2. The magnetization load-bearing detection optical cable according to claim 1, wherein the stainless steel tube is filled with optical fiber ointment.

3. The magnetization load-bearing detection optical cable according to claim 1, wherein the inner sheath is a modified polypropylene inner sheath, and the inner sheath is extruded outside the stainless steel tube.

4. The magnetization load-bearing detection optical cable according to claim 1, wherein the armor layer is made of two layers of high-strength galvanized steel wires, an inner layer and an outer layer.

5. The magnetization load-bearing detection cable according to claim 1, wherein the outer sheath comprises a first outer sheath and a second outer sheath, and the first outer sheath is located between the armor layer and the second outer sheath.

6. The magnetization load-bearing detection cable according to claim 1, wherein the stainless steel tube has 2 single-mode and 2 multi-mode optical fibers therein.

7. The magnetization load-bearing detection optical cable according to claim 1, wherein the permanent magnets are arranged at intervals of a certain distance at the inner sheath layer, and the permanent magnets are adhesively fixed at the inner sheath layer by an adhesive tape.

8. The magnetization load-bearing detection optical cable according to claim 7, wherein the permanent magnet is magnetic steel.

9. The magnetization load-bearing detection cable according to claim 7, wherein the set distance is 1 meter.

10. The magnetization load-bearing detection optical cable according to claim 1, wherein a fixing bracket is fixed at the permanent magnet, the fixing bracket and the permanent magnet are fixed through adhesive glue, the fixing bracket has a positioning post, a positioning hole is formed on the outer side of the inner protection layer, and the positioning post is matched with the positioning hole.