CN115166918A - Sealing device for tail end of optical cable in sleeve and mounting method - Google Patents
Sealing device for tail end of optical cable in sleeve and mounting method Download PDFInfo
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- CN115166918A CN115166918A CN202210825424.6A CN202210825424A CN115166918A CN 115166918 A CN115166918 A CN 115166918A CN 202210825424 A CN202210825424 A CN 202210825424A CN 115166918 A CN115166918 A CN 115166918A
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- sealing
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- sealed
- sleeve
- hole
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- 238000007789 sealing Methods 0.000 title claims abstract description 273
- 230000003287 optical effect Effects 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000004519 grease Substances 0.000 claims description 29
- 229920001296 polysiloxane Polymers 0.000 claims description 29
- 238000001125 extrusion Methods 0.000 claims description 25
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 20
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 20
- 241001330002 Bambuseae Species 0.000 claims description 20
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 20
- 239000011425 bamboo Substances 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 28
- 238000009434 installation Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4442—Cap coupling boxes
- G02B6/4444—Seals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a tail end sealing device of an optical cable in a sleeve and an installation method thereof, and in a first aspect, the tail end sealing device of the optical cable in the sleeve comprises a steel core welded in the tail end of the optical cable and a sealing rubber sleeve wrapped outside the tail end of the optical cable, wherein a sealing connection assembly is arranged outside the sealing rubber sleeve, a connecting cylinder for fixing the optical cable is arranged on the sealing connection assembly in the direction opposite to the tail end of the optical cable, a sealing cylinder is arranged on the sealing connection assembly in the direction opposite to the connecting cylinder, both ends in the connecting cylinder and the sealing connection assembly in the length direction are provided with optical cable channels for the optical cable to pass through, one end of the sealing cylinder facing the connecting shaft is opened, and the other end of the sealing cylinder far away from the connecting shaft is closed. The invention can combine the tail end of the optical cable in different modes to form multiple reliable seals with good sealing effect.
Description
Technical Field
The invention relates to the technical field of optical cable packaging, in particular to a sealing device for the tail end of an optical cable in a sleeve and an installation method.
Background
In the process of oil logging, people need to know various data of downhole fluid to perform accurate measurement. At present, people often place an optical cable in a sleeve to go deep into a well, and the tail end of the optical cable is difficult to be effectively sealed in the high-temperature, high-pressure and high-corrosion environment of the well.
The conventional optical cable sealing adopts a conventional welding sealing mode, so that reliable sealing is difficult to achieve, and the phenomenon of tail end water inflow frequently occurs in actual engineering operation. After the tail end optical cable is watered, the internal performance of the optical cable is changed greatly, and finally the optical cable is scrapped. In engineering operation, after the tail end optical cable is filled with water, pressure can enter the ground through the channel of the optical cable, and serious safety accidents are caused.
Disclosure of Invention
The invention aims to provide a sealing device and an installation method for the tail end of an optical cable in a sleeve, which can combine the tail end of the optical cable in different modes to form multiple reliable seals and have good sealing effect.
In order to solve the technical problem, the invention adopts the following scheme:
first aspect, an intraductal optical cable tail end sealing device of cover, a be used for from outer armour of being equipped with the optical cable inwards in proper order, armour in the optical cable, the protection tube, optical fiber core's optical cable, including being used for the steel core of welding in the optical cable tail end and being used for the sealed gum cover of parcel outside the optical cable tail end, sealed gum cover is equipped with sealed coupling assembling outward, sealed coupling assembling is equipped with the connecting cylinder that is used for fixed optical cable on the optical cable tail end direction dorsad, sealed coupling assembling is equipped with the sealed cylinder that is used for placing the sealed coupling assembling who places sealed gum cover in the cavity in the direction of connecting cylinder dorsad, all run through along length direction both ends in connecting cylinder and the sealed coupling assembling and be equipped with the optical cable passageway that is used for making the optical cable pass through, sealed cylinder is towards the one end opening of connecting axle, the one end that the connecting axle was kept away from to sealed cylinder is sealed. The both ends outwards are equipped with the chamfer when sealed section of thick bamboo and connecting cylinder are connected on coupling assembling, and the chamfer plays the effect that leads and reduce to rub and hinder. The steel core is arranged in the protective tube of the optical cable and is in cold welding sealing with the protective tube. When the sealing rubber sleeve is arranged outside the tail end of the optical cable, a gap exists between the sealing rubber sleeve and the tail end of the optical cable, the tail end of the optical cable can be arranged in the sealing rubber sleeve after glue is injected into the sealing rubber sleeve, and the glue is injected into the gap between the sealing rubber sleeve and the tail end of the optical cable. The optical cable port protection device has the advantages that the steel core and the tail end of the optical cable are sealed in a cold welding mode, and the optical cable port can be protected fundamentally; through the arrangement of the sealing rubber sleeve, when the outside of the sealing rubber sleeve is in a pressure environment, the external pressure of the sealing rubber sleeve is far greater than the inside of the sealing rubber sleeve, a pressure difference is formed, the external pressure can press the sealing rubber sleeve more and more tightly through a gap in the sealing rubber sleeve, and the sealing effect is achieved; the optical cable is fixedly connected to the connecting cylinder through the arrangement of the connecting cylinder, and the optical cable between the inside of the connecting cylinder and the sealing connecting assembly can be sealed; through the setting of a sealed section of thick bamboo, can carry out further sealing to the optical cable tail end on the basis through sealed gum cover and sealing connection subassembly.
Further, sealing connection subassembly is equipped with the mounting hole including sealed axle, sealed axle towards sealed cylinder one end, and threaded connection has the threaded sleeve who is used for placing sealed gum cover in the mounting hole, and threaded sleeve is equipped with the cavity that is used for placing sealed gum cover and optical cable along the axial, and threaded sleeve is towards the one end opening of connecting cylinder, and threaded sleeve seals to connecting cylinder one end dorsad. The outer diameters of the sealing barrel and the connecting barrel are the same, when the sealing barrel and the connecting barrel are connected to the two sides of the sealing shaft, the middle part of the sealing shaft is provided with a disc body with the outer diameter being the same as that of the sealing barrel and the connecting barrel, and the two ends of the disc body are respectively contacted with the sealing shaft and the connecting barrel. The optical cable sealing device has the advantages that the optical cable with the sealing rubber sleeve can be sealed in the threaded sleeve and the sealing shaft through the arrangement of the threaded sleeve.
Furthermore, a threaded hole is formed in one end, facing the connecting cylinder, of the sealing shaft, a pressing bolt is connected with the inner thread of the threaded hole and provided with a cavity which penetrates through the two ends of the sealing shaft along the axial direction, an optical cable through hole is formed between the threaded hole and the mounting hole, the inner diameter of the optical cable through hole is matched with the outer diameter of a protection tube in an optical cable protection armor formed by an optical cable outer armor and an optical cable inner armor, sealing holes are formed between the optical cable through hole and the threaded hole and between the optical cable through hole and the mounting hole, the inner diameter of each sealing hole is larger than that of each optical cable through hole, an extrusion sealing assembly used for being sleeved outside the optical cable is arranged in each sealing hole, and the outer diameters of all the parts in the extrusion sealing assembly are larger than that of each optical cable through hole. The compression bolt sealing device has the advantages that the compression bolt and the threaded sleeve are arranged, and the compression bolt end face and the sealing hole end face or the threaded sleeve end face and the sealing hole end face which are fixedly arranged in the sealing hole in a compression mode can be pressed by the compression sealing assembly.
Further, extrusion seal assembly includes elastic shaft sleeve and rigidity clamping ring, the both ends of elastic shaft sleeve and rigidity clamping ring all are equipped with the chamfer of mutual matching, the chamfer of elastic shaft sleeve and the chamfer phase-match of rigidity clamping ring promptly, elastic shaft sleeve and rigidity clamping ring interval set up in proper order, extrusion seal assembly is still including compressing tightly the pad, compress tightly the one side external diameter that the pad closes on screw hole or mounting hole and be greater than the internal diameter in sealed hole, compress tightly one side external diameter that the pad closes on the optical cable through-hole and the internal diameter phase-match in sealed hole, compress tightly the pad and contact with the rigidity clamping ring, be equipped with the chamfer assorted chamfer with the rigidity clamping ring in compressing tightly the cavity of pad, the terminal surface external diameter of rigidity clamping ring is less than the middle part external diameter, the internal diameter of cavity in terminal surface department is greater than the internal diameter at the middle part in the elastic shaft sleeve. The elastic shaft sleeve adopts a sealing rubber ring, and the rigid compression ring adopts a metal compression ring. The sealing device has the advantages that through the arrangement of the elastic shaft sleeve, contact pressure can be caused on a contact surface to achieve a sealing effect; the sealing effect of the elastic shaft sleeve can be further improved by arranging the elastic shaft sleeve and the chamfer of the rigid compression ring; through the setting of rigidity clamping ring, when playing the sealed effect of certain degree, can also play the effect of support.
Further, be equipped with the threaded sleeve screw thread section that is used for being connected with the mounting hole on the lateral wall that the threaded sleeve is close to the open end, close on screw thread section department on the lateral wall of threaded sleeve and be equipped with the ring channel, be equipped with O type circle in the ring channel, be equipped with on the section inwards of mounting hole with threaded sleeve screw thread section assorted mounting hole screw thread section, be equipped with the mounting hole O type circle seal segment that is used for placing O type circle on the section outwards of mounting hole, the internal diameter of the sealed section of mounting hole O type circle is greater than the internal diameter of mounting hole screw thread section. The middle part closes on ring channel department and is equipped with the nut that the external diameter is greater than the mounting hole internal diameter on the threaded sleeve for in the mounting hole is installed into with the threaded sleeve to the convenience, simultaneously under the terminal surface contact's of nut and sealed axle the state, can play certain sealed effect to the environment in the mounting hole. The O-shaped ring is arranged, belongs to self-tightening extrusion type sealing and mainly achieves the sealing effect by causing contact pressure on a contact surface in an elastic deformation mode of the O-shaped ring; the inner diameter of the O-shaped ring sealing section of the mounting hole is larger than that of the threaded section of the mounting hole, so that the O-shaped ring sealing section of the mounting hole is not damaged during processing; the mounting hole thread section is arranged in the mounting hole in the inward direction of the O-shaped ring sealing section of the mounting hole, so that the threads can be prevented from being interfered in the practical application process.
Furthermore, a taper sleeve assembly used for fixing the optical cable in the connecting cylinder is arranged in the connecting cylinder, and a fixing bolt penetrating through the side wall of the connecting cylinder is in threaded connection with the outer side wall of the taper sleeve assembly. The taper sleeve component comprises a taper sleeve shell, a middle taper sleeve and a small taper sleeve which are sequentially sleeved from outside to inside, a gap between the taper sleeve shell and the middle taper sleeve is used for clamping an outer armor of an optical cable, a gap between the middle taper sleeve and the small taper sleeve is used for clamping an inner armor of the optical cable arranged in the outer armor of the optical cable, a cylindrical cavity used for enabling a protection tube in the inner armor of the optical cable to pass is formed in the small taper sleeve, the outer armor of the optical cable and the inner armor of the optical cable are sequentially stripped during installation, and the exposed protection tube passes through the cavity in the small taper sleeve and then is respectively installed in the taper sleeve component, so that the optical cable fixing effect is achieved. The taper sleeve connecting device has the advantages that the taper sleeve shell can be fixed in the connecting cylinder through the arrangement of the fixing bolt, and the taper sleeve shell is prevented from moving along the optical cable extending mode or rotating around the axis of the taper sleeve shell.
Furthermore, the connecting cylinder is under the state that is connected with sealing connection subassembly, and cavity in the connecting cylinder is equipped with the silicone grease chamber on the district section between taper sleeve subassembly and coupling subassembly, is equipped with the silicone grease passageway that is linked together with the silicone grease chamber on the lateral wall of connecting cylinder. The effect of the taper sleeve sealing structure is that silicone grease is injected into the silicone grease cavity through the silicone grease channel, and the sealing effect can be further improved between the sealing connection assembly and the taper sleeve assembly.
Further, sealed axle passes through threaded connection in the cavity of a sealed section of thick bamboo, and sealed axle passes through threaded connection in the cavity of a connecting cylinder, and sealed section of thick bamboo is equipped with the sealed section of thick bamboo thread section that is used for being connected with sealed axle on the lateral wall that sealed section of thick bamboo closes on the open end, and sealed section of thick bamboo thread section department is equipped with the ring channel on closing on sealed side of the axle lateral wall, is equipped with O type circle in the ring channel, and sealed section of thick bamboo closes on being equipped with sealed section of thick bamboo O type circle seal segment on the cavity open-ended inside wall, and the internal diameter of sealed section of thick bamboo O type circle seal segment is greater than the internal diameter of sealed section of thick bamboo thread section. The O-shaped ring is arranged, belongs to self-tightening extrusion type sealing, and mainly achieves the sealing effect by generating contact pressure on a contact surface in an elastic deformation mode of the O-shaped ring; the inner diameter of the sealing section of the O-shaped ring of the sealing cylinder is larger than that of the thread section of the sealing cylinder, so that the sealing section of the O-shaped ring of the sealing cylinder is not damaged during processing; the sealing barrel thread section is arranged in the mounting hole in the inward direction of the sealing section of the O-shaped ring of the sealing barrel, so that the threads are not interfered in the practical application process.
In a second aspect, a method for installing a sealing device for a tail end of an optical cable in a sleeve includes the following steps:
step S1: passing the fiber optic cable through the interior cavity of the connector barrel and securing the fiber optic cable within the connector barrel;
step S2: connecting the connecting cylinder with the sealing connecting assembly after the optical cable passes through the sealing connecting assembly;
and step S3: welding the steel core in the tail end of the optical cable and then wrapping the sealing rubber sleeve outside the tail end of the optical cable;
and step S4: sealing the sealing rubber sleeve in the sealing connecting assembly;
step S5: and the sealing barrel is connected with the sealing connecting assembly in a sealing way.
Further, the method also comprises the following steps:
step S1a: in the step S1, the optical cable is fixed in the connecting cylinder through the taper sleeve component;
step S2a: in the step S2, the extrusion sealing components are sequentially arranged in the sealing holes, then the compression bolts are connected with the sealing shafts, then the optical cables sequentially pass through the compression bolts, the extrusion sealing components and the optical cable through holes, and finally the sealing shafts are connected with the connecting cylinders through threads;
step S3a: before the step S3, sequentially sleeving an extrusion sealing assembly from the tail end of the optical cable, and then welding the steel core in the tail end of the optical cable;
step S4a: in the step S4, firstly, the sealing rubber sleeve is placed into the cavity of the threaded sleeve, and then the threaded sleeve with the O-shaped ring on the outer side wall is connected with the sealing shaft;
step S5a: in the step S5, a sealing shaft with an O-shaped ring on the outer side wall is connected with a sealing sleeve through threads;
step S5b: after step S5, silicone grease is injected into the silicone grease cavity through the silicone grease channel.
The invention has the following beneficial effects:
1. the steel core and the tail end of the optical cable are sealed by cold welding, so that the port of the optical cable can be fundamentally protected;
2. through the arrangement of the sealing rubber sleeve, when the outside of the sealing rubber sleeve is in a pressure environment, the external pressure of the sealing rubber sleeve is far greater than the inside of the sealing rubber sleeve, a pressure difference is formed, and the external pressure can press the sealing rubber sleeve more and more tightly through a gap in the sealing rubber sleeve, so that the sealing effect is achieved;
3. the optical cable is fixedly connected to the connecting cylinder through the arrangement of the connecting cylinder, and the optical cable between the inside of the connecting cylinder and the sealing connecting assembly can be sealed;
4. through the setting of a sealed section of thick bamboo, can carry out further sealing to the optical cable tail end on the basis through sealed gum cover and sealing connection subassembly.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of the seal connection assembly;
FIG. 3 is a cross-sectional structural view of the seal shaft;
fig. 4 is an enlarged schematic view of a portion a in fig. 1.
The reference numerals are explained below: 1. a steel core; 2. sealing the rubber sleeve; 3. sealing the connecting assembly; 4. a connecting cylinder; 5. a sealing cylinder; 6. a seal shaft; 7. a threaded hole; 8. a hold-down bolt; 9. mounting holes; 10. a threaded sleeve; 11. an optical cable through hole; 12. sealing the hole; 13. extruding the seal assembly; 14. an elastic shaft sleeve; 15. a rigid compression ring; 16. a compression pad; 17. a threaded sleeve thread segment; 18. an O-shaped ring; 19. installing a hole thread section; 20. installing a hole O-shaped ring sealing section; 21. a taper sleeve assembly; 22. a silicone grease cavity; 23. a silicone grease channel; 24. sealing the cylinder thread section; 25. and the sealing section of the O-shaped ring of the sealing cylinder.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or that are conventionally placed when the product of the present invention is used, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "installed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Example 1
On the first hand, as shown in fig. 1, an intraductal optical cable tail end sealing device of cover, a be used for from outer armor of optical cable inwards in proper order, armor in the optical cable, the protection tube, the optical cable of optic fibre core, including being used for welding steel core 1 in the optical cable tail end and being used for wrapping up sealing rubber sleeve 2 outside the optical cable tail end, sealing rubber sleeve 2 is equipped with sealing connection assembly 3 outward, sealing connection assembly 3 is equipped with the connecting cylinder 4 that is used for fixed optical cable on the optical cable tail end direction dorsad, be equipped with the sealing cylinder 5 that is used for placing sealing connection assembly 3 who places sealing rubber sleeve 2 in the cavity on the direction of sealing connection assembly 3 dorsad connecting cylinder 4, all run through along the length direction both ends in connecting cylinder 4 and the sealing connection assembly 3 and be equipped with the optical cable passageway that is used for making the optical cable pass through, sealing cylinder 5 is towards the one end opening of connecting axle, the one end that connecting axle was kept away from to sealing cylinder 5 is sealed. The two ends of the sealing cylinder 5 and the connecting cylinder 4 which face outwards when connected on the connecting component are provided with chamfer angles which play a role in guiding and reducing friction resistance. The steel core 1 is arranged in the protective tube of the optical cable and is sealed with the protective tube in a cold welding way. When the sealing rubber sleeve 2 is arranged outside the tail end of the optical cable, a gap exists between the sealing rubber sleeve 2 and the tail end of the optical cable, the tail end of the optical cable can be arranged in the sealing rubber sleeve 2 after glue is injected into the sealing rubber sleeve 2, and the glue is injected into the gap between the sealing rubber sleeve 2 and the tail end of the optical cable. The steel core 1 and the tail end of the optical cable are sealed in a cold welding mode, and the port of the optical cable can be protected fundamentally; through the arrangement of the sealing rubber sleeve 2, when the outside of the sealing rubber sleeve 2 is in a pressure environment, the external pressure of the sealing rubber sleeve 2 is far greater than the inside of the sealing rubber sleeve, a pressure difference is formed, and the external pressure can press the sealing rubber sleeve 2 more and more tightly through a gap in the sealing rubber sleeve 2, so that the sealing effect is achieved; the optical cable is fixedly connected to the connecting cylinder 4 through the arrangement of the connecting cylinder 4, and the optical cable between the inside of the connecting cylinder 4 and the sealing connecting assembly 3 can be sealed; through the setting of sealing barrel 5, can carry out further sealed to the optical cable tail end on the basis of through sealed gum cover 2 and sealed coupling assembling 3.
Specifically, as shown in fig. 2, the sealing connection assembly 3 includes a sealing shaft 6, the sealing shaft 6 is provided with a mounting hole 9 towards one end of the sealing barrel 5, the mounting hole 9 is internally threaded with a threaded sleeve 10 for placing the sealing rubber sleeve 2, the threaded sleeve 10 is provided with a cavity for placing the sealing rubber sleeve 2 and the optical cable along the axial direction, the threaded sleeve 10 is open towards one end of the connecting barrel 4, and the threaded sleeve 10 is closed towards one end of the connecting barrel 4. The optical cable with the sealing rubber sleeve 2 can be sealed in the threaded sleeve 10 and the sealing shaft 6 through the arrangement of the threaded sleeve 10.
Specifically, as shown in fig. 3, a threaded hole 7 is formed in one end, facing the connecting cylinder 4, of the sealing shaft 6, a pressing bolt 8 is connected to the threaded hole 7 in a threaded manner, the pressing bolt 8 is provided with a cavity which penetrates through the two ends of the sealing shaft in the axial direction, an optical cable through hole 11 is formed in the threaded hole 7 and the mounting hole 9, the inner diameter of the optical cable is matched with the outer diameter of a protection tube in an optical cable protection armor formed by an optical cable outer armor and an optical cable inner armor, sealing holes 12 are formed between the optical cable through hole 11 and the threaded hole 7 and between the optical cable through hole 11 and the mounting hole 9, the inner diameter of each sealing hole 12 is larger than the inner diameter of the corresponding optical cable through hole 11, an extrusion sealing assembly 13 used for being arranged outside the optical cable in a sleeved mode is arranged in each sealing hole 12, and the outer diameters of all parts in the extrusion sealing assembly 13 are larger than the inner diameters of the optical cable through holes 11. The effect of the sealing device is that the pressing sealing assembly 13 can be pressed and fixed between the end face of the pressing bolt 8 in the sealing hole 12 and the end face of the sealing hole 12 or between the end face of the threaded sleeve 10 and the end face of the sealing hole 12 through the arrangement of the pressing bolt 8 and the threaded sleeve 10.
Specifically, as shown in fig. 4, extrusion seal assembly 13 includes elastic shaft sleeve 14 and rigid compression ring 15, the both ends of elastic shaft sleeve 14 and rigid compression ring 15 all are equipped with the chamfer of mutual matching, the chamfer of elastic shaft sleeve 14 matches with the chamfer of rigid compression ring 15 promptly, elastic shaft sleeve 14 and rigid compression ring 15 set up at interval in proper order, extrusion seal assembly 13 is still including compressing tightly the pad 16, compress tightly the one side external diameter that pad 16 closes on screw hole 7 or mounting hole 9 and be greater than the internal diameter of sealed hole 12, compress tightly one side external diameter that pad 16 closes on optical cable through-hole 11 and the internal diameter phase-match of sealed hole 12, compress tightly pad 16 and contact with rigid compression ring 15, be equipped with the chamfer assorted chamfer with rigid compression ring 15 in compressing tightly the cavity of pad 16, the terminal surface external diameter of rigid compression ring 15 is less than the middle part external diameter, the internal diameter of cavity in elastic shaft sleeve 14 at the terminal surface department is greater than the internal diameter at the middle part. The elastic shaft sleeve 14 adopts a sealing rubber ring, and the rigid pressing ring 15 adopts a metal pressing ring. The function of the sealing device is that through the arrangement of the elastic shaft sleeve 14, contact pressure can be caused on a contact surface to achieve a sealing effect; the sealing effect of the elastic shaft sleeve 14 can be further improved by arranging the chamfers of the elastic shaft sleeve 14 and the rigid pressing ring 15; through the setting of rigidity clamping ring 15, when playing the sealed effect of certain degree, can also play the effect of support.
Specifically, as shown in fig. 2, a threaded sleeve thread section 17 used for being connected with the mounting hole 9 is arranged on the side wall of the threaded sleeve 10 close to the opening end, an annular groove is arranged on the side wall of the threaded sleeve 10 close to the thread section, an O-ring 18 is arranged in the annular groove, a mounting hole thread section 19 matched with the threaded sleeve thread section 17 is arranged on the inward section of the mounting hole 9, a mounting hole O-ring sealing section 20 used for placing the O-ring 18 is arranged on the outward section of the mounting hole 9, and the inner diameter of the mounting hole O-ring sealing section 20 is larger than the inner diameter of the mounting hole thread section 19. The O-shaped ring 18 is arranged, the O-shaped ring 18 belongs to self-tightening extrusion type sealing, and the sealing effect is achieved by mainly depending on the elastic deformation mode of the O-shaped ring 18 to cause contact pressure on a contact surface; the inner diameter of the O-shaped ring sealing section 20 of the mounting hole is larger than that of the threaded section 19 of the mounting hole, so that the O-shaped ring sealing section 20 of the mounting hole is not damaged during processing; the mounting hole thread section 19 is arranged in the mounting hole 9 in the inward direction of the mounting hole O-shaped ring sealing section 20, so that the threads are not interfered in the practical application process.
Specifically, as shown in fig. 1, a taper sleeve assembly 21 for fixing the optical cable in the connecting cylinder 4 is arranged in the connecting cylinder 4, and a fixing bolt penetrating through the side wall of the connecting cylinder 4 is connected to the outer side wall of the taper sleeve assembly 21 in a threaded manner. The taper sleeve component 21 comprises a taper sleeve shell, a middle taper sleeve and a small taper sleeve which are sequentially sleeved from outside to inside, a gap between the taper sleeve shell and the middle taper sleeve is used for clamping an outer armor of an optical cable, a gap between the middle taper sleeve and the small taper sleeve is used for clamping an inner armor of the optical cable arranged in the outer armor of the optical cable, a cylindrical cavity for enabling a protection tube in the inner armor of the optical cable to penetrate is formed in the small taper sleeve, the outer armor of the optical cable and the inner armor of the optical cable are sequentially stripped during installation, and the inner armor of the optical cable and the outer armor of the optical cable are respectively installed in the taper sleeve component 21 after the exposed protection tube penetrates through the cavity in the small taper sleeve, so that the optical cable fixing effect is achieved. The taper sleeve shell fixing device has the advantages that the taper sleeve shell can be fixed in the connecting cylinder 4 through the arrangement of the fixing bolt, and the taper sleeve shell is prevented from moving along an optical cable extending mode or rotating around the axis of the taper sleeve shell.
Specifically, as shown in fig. 1, when the connecting cylinder 4 is connected to the sealing connection assembly 3, a silicone grease cavity 22 is formed in a section of the cavity in the connecting cylinder 4 between the taper sleeve assembly 21 and the connection assembly, and a silicone grease channel 23 communicated with the silicone grease cavity 22 is formed in a side wall of the connecting cylinder 4. Its effect does, injects the silicone grease into silicone grease chamber 22 through silicone grease passageway 23, can further promote sealed effect between sealing connection subassembly 3 and taper sleeve subassembly 21.
Specifically, as shown in fig. 1 and 4, the sealing shaft 6 is connected in the cavity of the sealing barrel 5 through threads, the sealing shaft 6 is connected in the cavity of the connecting barrel 4 through threads, a sealing barrel thread section 24 used for being connected with the sealing shaft 6 is arranged on the side wall of the sealing barrel 5 close to the opening end, an annular groove is arranged at the position close to the sealing shaft 6 thread section on the side wall of the sealing shaft 6, an O-shaped ring 18 is arranged in the annular groove, a sealing barrel O-shaped ring sealing section 25 is arranged on the inner side wall of the sealing barrel 5 close to the opening of the cavity, and the inner diameter of the sealing barrel O-shaped ring sealing section 25 is larger than that of the sealing barrel thread section 24. The O-shaped ring 18 is arranged, the O-shaped ring 18 belongs to self-tightening extrusion type sealing, and the sealing effect is achieved by mainly depending on the elastic deformation mode of the O-shaped ring 18 to cause contact pressure on a contact surface; the inner diameter of the sealing section 25 of the O-shaped ring of the sealing cylinder is larger than that of the threaded section 24 of the sealing cylinder, so that the sealing section 25 of the O-shaped ring of the sealing cylinder is not damaged during processing; the sealing cylinder thread section 24 is arranged in the mounting hole 9 in the inward direction of the sealing cylinder O-shaped ring sealing section 25, so that the threads are not interfered in the practical application process.
In a second aspect, a method for installing a sealing device for a tail end of an optical cable in a sleeve includes the following steps:
step S1: passing the cable through the internal cavity of the connector barrel 4 and securing the cable within the connector barrel 4;
step S2: after the optical cable penetrates through the sealing connection assembly 3, the connecting cylinder 4 is connected with the sealing connection assembly 3;
and step S3: welding the steel core 1 in the tail end of the optical cable, and then wrapping the sealing rubber sleeve 2 outside the tail end of the optical cable;
and step S4: sealing the sealing rubber sleeve 2 in the sealing connecting component 3;
step S5: the sealing cylinder 5 is connected with the sealing connection assembly 3 in a sealing mode.
Further comprising the steps of:
step S1a: in step S1, the optical cable is fixed in the connector 4 by the taper sleeve component 21;
step S2a: in the step S2, the extrusion seal assembly 13 is firstly installed in the seal hole 12 in sequence, then the compression bolt 8 is connected with the seal shaft 6, then the optical cable sequentially passes through the compression bolt 8, the extrusion seal assembly 13 and the optical cable through hole 11, and finally the seal shaft 6 is connected with the connecting cylinder 4 through threads;
step S3a: before the step S3, the extrusion sealing assembly 13 is sleeved in the tail end of the optical cable in sequence, and then the steel core 1 is welded in the tail end of the optical cable;
step S4a: in step S4, the sealing rubber sleeve 2 is first placed into the cavity of the threaded sleeve 10, and then the threaded sleeve 10 with the O-ring 18 on the outer side wall is connected with the sealing shaft 6;
step S5a: in the step S5, the sealing shaft 6 with the O-shaped ring 18 on the outer side wall is connected with the sealing sleeve through threads;
step S5b: after step S5, silicone grease is injected into the silicone grease chamber 22 through the silicone grease channel 23.
The working principle of the embodiment is explained as follows: the steel core 1 and the tail end of the optical cable are sealed in a cold welding mode, so that the tail end of the optical cable is sealed in a foundation mode; the sealing rubber sleeve 2 is used for wrapping the outside of the tail end of the optical cable, so that further defensive sealing is realized; by arranging the extrusion sealing assembly 13, the sealing between the outer side of the optical fiber and the inner side of the sealing shaft 6 is realized; by means of the arrangement of the O-rings 18, a seal is achieved for the rigid cartridge parts, i.e. between the seal shaft 6 and the threaded sleeve 10, and between the seal shaft 6 and the seal cartridge 5. When the invention is immersed in liquid, due to the arrangement of the O-shaped ring 18, the liquid can only enter a cavity in the connecting cylinder 4 through a gap between the sealing shaft 6 and the connecting cylinder 4 or an opening on the end surface of the connecting cylinder 4, namely a silicone grease cavity 22, and the silicone grease in the silicone grease cavity 22 can play a primary sealing role; if part of liquid enters the sealing hole 12 through the gap, the sealing component 13 is squeezed to achieve a secondary sealing effect; if part of liquid enters the threaded sleeve 10 through the gap, the sealing rubber sleeve 2 plays a role in sealing for three times; if a trace amount of liquid enters the sealing rubber sleeve 2, the sealing effect is performed for four times through the steel core 1. The invention realizes multiple reliable sealing of the tail end of the optical cable and has strong sealing capability.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a intraductal optical cable tail end sealing device of cover which characterized in that: including being used for welding steel core (1) in the optical cable tail end and being used for wrapping up in optical cable tail end outside sealed gum cover (2), sealed gum cover (2) are equipped with sealing connection subassembly (3) outward, be equipped with connecting cylinder (4) that are used for fixed optical cable on sealed connection subassembly (3) the optical cable tail end orientation dorsad, be equipped with sealing cylinder (5) in the orientation of sealing connection subassembly (3) dorsad connecting cylinder (4), all run through along length direction both ends in connecting cylinder (4) and sealed connection subassembly (3) and be equipped with the optical cable passageway that is used for making the optical cable pass through, sealing cylinder (5) are towards the one end opening of connecting axle, the one end that the connecting axle was kept away from in sealing cylinder (5) is sealed.
2. The apparatus of claim 1, wherein: sealing connection subassembly (3) are equipped with mounting hole (9) including sealed axle (6), sealed axle (6) towards sealed section of thick bamboo (5) one end, and mounting hole (9) female connection has threaded sleeve (10) that is used for placing sealed gum cover (2), and threaded sleeve (10) are equipped with the cavity that is used for placing sealed gum cover (2) and optical cable along the axial, and threaded sleeve (10) are towards the one end opening of connecting cylinder (4), and threaded sleeve (10) are connecting cylinder (4) one end closure dorsad.
3. An optical cable end sealing device in a casing according to claim 2, wherein: sealed axle (6) are equipped with screw hole (7) towards connecting cylinder (4) one end, screw hole (7) female connection has and is equipped with along axial clamp bolt (8) of running through the cavity at both ends, be equipped with internal diameter and optical cable's protection tube external diameter assorted optical cable through-hole (11) between screw hole (7) and mounting hole (9), be equipped with sealed hole (12) between optical cable through-hole (11) and screw hole (7) and between optical cable through-hole (11) and mounting hole (9), the internal diameter of sealed hole (12) is greater than the internal diameter of optical cable through-hole (11), be equipped with in sealed hole (12) and be used for the cover to establish extrusion seal assembly (13) outside the optical cable.
4. A device for sealing the end of an optical cable inside a casing according to claim 3, wherein: extrusion seal assembly (13) include elastic shaft sleeve (14) and rigid clamping ring (15), the both ends of elastic shaft sleeve (14) and rigid clamping ring (15) all are equipped with the chamfer of mutual matching, elastic shaft sleeve (14) and rigid clamping ring (15) interval in proper order set up, extrusion seal assembly (13) still including compressing tightly pad (16), compress tightly one side external diameter that pad (16) close on screw hole (7) or mounting hole (9) and be greater than the internal diameter of sealed hole (12), compress tightly one side external diameter that pad (16) close on optical cable through-hole (11) and the internal diameter phase-match of sealed hole (12).
5. A device for sealing the end of an optical cable in a casing according to claim 3, wherein: be equipped with on the lateral wall that threaded sleeve (10) are close to the open end and be used for threaded sleeve screw thread section (17) that are connected with mounting hole (9), it is equipped with the ring channel to close on screw thread section department on the lateral wall of threaded sleeve (10), be equipped with O type circle (18) in the ring channel, be equipped with on the section inwards of mounting hole (9) with threaded sleeve screw thread section (17) assorted mounting hole screw thread section (19), be equipped with mounting hole O type circle sealing segment (20) that are used for placing O type circle (18) on the section outwards of mounting hole (9), the internal diameter of mounting hole O type circle sealing segment (20) is greater than the internal diameter of mounting hole screw thread section (19).
6. The apparatus of claim 1, wherein: a taper sleeve assembly (21) used for fixing the optical cable in the connecting cylinder (4) is arranged in the connecting cylinder (4), and a fixing bolt penetrating through the side wall of the connecting cylinder (4) is in threaded connection with the outer side wall of the taper sleeve assembly (21).
7. The apparatus of claim 6, wherein: under the state that connecting cylinder (4) is being connected with sealing connection subassembly (3), cavity in connecting cylinder (4) is equipped with silicone grease chamber (22) on the district's section between taper sleeve subassembly (21) and coupling assembling, is equipped with silicone grease passageway (23) that are linked together with silicone grease chamber (22) on the lateral wall of connecting cylinder (4).
8. An optical cable end sealing device in a casing according to claim 2, wherein: sealing shaft (6) are through threaded connection in the cavity of a sealed section of thick bamboo (5), sealing shaft (6) are through threaded connection in the cavity of connecting cylinder (4), be equipped with on the lateral wall that sealed section of thick bamboo (5) are close to the open end and be used for sealing a section of thick bamboo screw thread (24) that are connected with sealed shaft (6), it is equipped with the ring channel to close on sealed shaft (6) screw thread section on sealed shaft (6) lateral wall, be equipped with O type circle (18) in the ring channel, sealed section of thick bamboo (5) are close to and are equipped with sealed section of thick bamboo O type circle seal (25) on the open-ended inside wall of cavity, the internal diameter of sealed section of thick bamboo O type circle seal (25) is greater than the internal diameter of sealed section of thick bamboo screw thread (24).
9. A method for installing a sealing device at the tail end of an optical cable in a sleeve is characterized by comprising the following steps: the method comprises the following steps:
step S1: passing the cable through the internal cavity of the connector barrel (4) and securing the cable within the connector barrel (4);
step S2: the optical cable penetrates through the sealing connection assembly (3) and then the connecting cylinder (4) is connected with the sealing connection assembly (3);
and step S3: welding the steel core (1) in the tail end of the optical cable, and then wrapping the sealing rubber sleeve (2) outside the tail end of the optical cable;
and step S4: sealing the sealing rubber sleeve (2) in the sealing connecting component (3);
step S5: and the sealing cylinder (5) is connected with the sealing connecting component (3) in a sealing way.
10. A method of installing a sealing device for the rear end of an optical cable inside a casing according to claim 9, wherein: further comprising the steps of:
step S1a: in step S1, the optical cable is fixed in the connecting cylinder (4) through a taper sleeve component (21);
step S2a: in the step S2, the extrusion sealing assembly (13) is firstly installed in the sealing hole (12) in sequence, then the compression bolt (8) is connected with the sealing shaft (6), then the optical cable sequentially penetrates through the compression bolt (8), the extrusion sealing assembly (13) and the optical cable through hole (11), and finally the sealing shaft (6) is connected with the connecting cylinder (4) through threads;
step S3a: before the step S3, the extrusion sealing assembly (13) is sleeved in the tail end of the optical cable in sequence, and then the steel core (1) is welded in the tail end of the optical cable;
step S4a: in the step S4, the sealing rubber sleeve (2) is firstly placed into the cavity of the threaded sleeve (10), and then the threaded sleeve (10) with the O-shaped ring (18) arranged on the outer side wall is connected with the sealing shaft (6);
step S5a: in the step S5, a sealing shaft (6) with an O-shaped ring (18) arranged on the outer side wall is connected with a sealing sleeve through threads;
step S5b: after step S5, silicone grease is injected into the silicone grease cavity (22) through the silicone grease channel (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210825424.6A CN115166918A (en) | 2022-07-14 | 2022-07-14 | Sealing device for tail end of optical cable in sleeve and mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210825424.6A CN115166918A (en) | 2022-07-14 | 2022-07-14 | Sealing device for tail end of optical cable in sleeve and mounting method |
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| CN115166918A true CN115166918A (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210825424.6A Pending CN115166918A (en) | 2022-07-14 | 2022-07-14 | Sealing device for tail end of optical cable in sleeve and mounting method |
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| CN102073107A (en) * | 2011-02-22 | 2011-05-25 | 中国海洋石油总公司 | Underground optical cable connecting device |
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| CN211826643U (en) * | 2020-05-09 | 2020-10-30 | 国兴汇金(深圳)科技有限公司 | Rope cap sealing device for optical cable logging |
| US20210080667A1 (en) * | 2018-05-30 | 2021-03-18 | Corning Research & Development Corporation | Cable sealing device |
| CN214375434U (en) * | 2020-12-25 | 2021-10-08 | 中法渤海地质服务有限公司 | Novel optical fiber steel wire rope cap |
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2022
- 2022-07-14 CN CN202210825424.6A patent/CN115166918A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102073107A (en) * | 2011-02-22 | 2011-05-25 | 中国海洋石油总公司 | Underground optical cable connecting device |
| CN206696483U (en) * | 2017-03-27 | 2017-12-01 | 东营市世创石油技术有限公司 | thermal recovery steam injection well distributed temperature measuring optical cable |
| US20210080667A1 (en) * | 2018-05-30 | 2021-03-18 | Corning Research & Development Corporation | Cable sealing device |
| CN108847304A (en) * | 2018-06-29 | 2018-11-20 | 中国科学院声学研究所 | A kind of attachment device pulling cable for multilayer wire armoring |
| CN211826643U (en) * | 2020-05-09 | 2020-10-30 | 国兴汇金(深圳)科技有限公司 | Rope cap sealing device for optical cable logging |
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Application publication date: 20221011 |