CN218272860U - Connecting device for connecting photoelectric composite cable and tractor and geological information acquisition equipment - Google Patents

Abstract

The application provides a connecting device and geological information acquisition equipment of connecting photoelectric composite cable and tractor. The opening at the both ends of connecting device's body edge first direction is first opening and second opening respectively, and photoelectric composite cable is worn to first opening, and the tractor is connected to the second opening, and seal assembly sets up in the body, and seal assembly includes: the sealing pipe extends along a first direction, the sealing cap is in threaded connection with one end, close to the first opening, of the sealing pipe, an extrusion cavity is formed after the sealing cap is in threaded connection with the sealing pipe, an extrusion structure is arranged in the extrusion cavity, the sealing cap and the extrusion structure are respectively provided with a first through hole and a second through hole, and the sealing plug is in threaded connection with one end, close to the second opening, of the sealing pipe and seals the opening, close to the second opening, of the sealing pipe; the photoelectric composite cable penetrating from the first opening is split into a cable part and an optical fiber part, the cable part is connected with the tractor at the second opening, and the optical fiber part extends into the sealing tube and deforms to close the second through hole.

Description

Connecting device for connecting photoelectric composite cable and tractor and geological information acquisition equipment

Technical Field

The application relates to the technical field of oil exploitation, in particular to a connecting device for connecting a photoelectric composite cable and a tractor and geological information acquisition equipment.

Background

Before oil exploitation, geological information (such as porosity, permeability and oil saturation) of an exploitation place needs to be acquired so as to determine stratum characteristics of the exploitation place, and therefore, workers can determine exploitation modes, exploitation duration, exploitation cautions and other information according to specific stratum characteristics.

The cable is connected with the tractor and the logging instrument through the connecting device respectively, the cable provides electric energy for the tractor and the logging instrument, the tractor can drive the cable, the connecting device and the logging instrument to move forwards in the shaft to a preset collecting position, and after the tractor drives the logging instrument to reach the preset collecting position, the logging instrument can collect and transmit geological information.

The photoelectric composite cable is a novel structure and integrates power transmission copper and optical fibers, wherein the power transmission copper enables the photoelectric composite cable to have the power transmission performance of the cable, and the optical fibers enable the photoelectric composite cable to have the acquisition and transmission functions of a logging instrument.

From this, can replace cable and logging instrument through the compound cable of photoelectricity to carry out geological information's collection through the combination of compound cable of photoelectricity, connecting device and tractor, but after the replacement, current connecting device can't match and connect compound cable of photoelectricity and tractor, provides a connecting device who connects compound cable of photoelectricity and tractor for this application.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a connecting device for connecting an optical-electrical composite cable and a tractor and geological information acquisition equipment, so that the connecting device for connecting the optical-electrical composite cable and the tractor is suitable for connecting the optical-electrical composite cable and the tractor.

In a first aspect, the present application provides a connecting device for connecting an optical composite cable and a retractor, the connecting device for connecting the optical composite cable and the retractor including: the optical-electrical composite cable retractor comprises a tube body and a sealing assembly, wherein the tube body extends along a first direction, openings at two ends of the tube body along the first direction are respectively a first opening and a second opening, the first opening is used for penetrating the optical-electrical composite cable, the second opening is used for connecting the retractor, the sealing assembly is arranged in the tube body, and the sealing assembly comprises: the sealing pipe extends along the first direction, the sealing cap is in threaded connection with one end, close to the first opening, of the sealing pipe, the sealing cap is in threaded connection with the sealing pipe, the sealing cap is matched with the sealing pipe in a threaded connection mode to form an extrusion cavity, an extrusion structure is arranged in the extrusion cavity, the extrusion structure is abutted to the inner wall of the sealing cap and the sealing pipe respectively, at least part of the extrusion structure is elastic, a first through hole and a second through hole communicated with the inside of the sealing pipe are formed in the sealing cap and the extrusion structure respectively, and the sealing plug is in threaded connection with one end, close to the second opening, of the sealing pipe and seals the opening, close to the second opening, of the sealing pipe; the photoelectric composite cable penetrating from the first opening is split into a cable part and an optical fiber part, the cable part is connected with a tractor at the second opening, the optical fiber part penetrates through the first through hole and the second through hole and extends into the sealing tube, and the optical fiber parts corresponding to two sides of the second through hole deform to close the second through hole in the process that the sealing cap is in threaded connection with the sealing tube and/or the sealing plug is in threaded connection with the sealing tube.

In some embodiments, the extrusion structure comprises: the elastic sleeve and the snap ring are distributed in the first through hole along the first direction, the elastic sleeve and the snap ring are respectively provided with a third through hole and a fourth through hole, the third through hole and the fourth through hole correspond to each other to form the second through hole in a matched mode, the elastic sleeve is an elastic structural member, and the elasticity of the snap ring is smaller than that of the elastic sleeve; wherein, sealed cap with sealed end cap spiro union respectively in behind the sealed tube, the elastic sleeve takes place deformation in order to radially extrude the optic fibre part, just the elastic sleeve with the both sides that the snap ring carried on the back each other do not the butt sealed cap with the sealed tube.

In some embodiments, the inner diameter of the first through hole increases in the first direction; the elastic sleeve is abutted against the inner wall of the first through hole, and the inner diameter of the elastic sleeve is increased along the first direction; the outer diameter of the clamping ring is along the first direction is unchanged, the clamping ring is close to the outer surface protrusion of one end of the sealing pipe is provided with a circle of outer edge, the clamping ring is close to one end of the elastic sleeve extends into the elastic sleeve, and the circle of outer edge abuts against the two sides of the first direction respectively to form the elastic sleeve and the sealing pipe.

In some embodiments, the connection device for connecting the optical composite cable and the retractor may further include: a securing assembly disposed within the tube body and between the first opening and the sealing assembly, the securing assembly comprising: the fixed plug is abutted to the inner wall of one circle of the pipe body, a fifth through hole is formed in the fixed plug, the radial size of the fifth through hole is smaller than or equal to the diameter of the photoelectric composite cable, and the abutting column penetrates through the pipe body and abuts against the fixed plug; the photoelectric composite cable penetrating from the first opening penetrates through the fifth through hole, and a steel wire outer armor on the outer surface of the photoelectric composite cable penetrating through the fifth through hole is bent in the direction opposite to the first direction and then abuts against the inner wall of the pipe body.

In some embodiments, the inner diameter of the first section of the pipe body corresponding to one end of the first opening is increased along the first direction; the fixed plug is abutted against the inner wall of the circle of the first section of the pipe body, a plurality of sixth through holes are formed in the fixed plug around the fifth through holes, and the outer armor of the steel wire is bent and then divided into a plurality of bundles which respectively penetrate through the sixth through holes to abut against the inner wall of the first section of the pipe body.

In some embodiments, the connection device for connecting the optical composite cable and the retractor may further include: the branching assembly is arranged in the pipe body and located between the fixing assembly and the sealing assembly, the branching assembly is provided with an inlet, a first outlet and a second outlet which are communicated in pairs, the inlet is close to the fifth through hole, the inlet is used for penetrating the photoelectric composite cable, the first outlet is used for penetrating out of the cable part, and the second outlet is used for penetrating out of the optical fiber part.

In some embodiments, the breakout assembly comprises: the first branch piece and the second branch piece are butted to form a branch cavity, one butted ends of the first branch piece and the second branch piece are matched to form the inlet, one butted sides of the first branch piece and the second branch piece are matched to form the first outlet, the other butted ends of the first branch piece and the second branch piece are matched to form the second outlet, and the fastener is detachably connected with the first branch piece and the second branch piece.

In some embodiments, the first opening has a caliber that is less than or equal to a diameter of the composite optical cable, the composite optical cable being interference fit to the first opening when the caliber of the first opening is less than the diameter of the composite optical cable; the retractor is connected with the second opening and then closes the second opening.

In a second aspect, the present application provides a geological information collection apparatus comprising: a photoelectric composite cable, a tractor and a connecting device for connecting the photoelectric composite cable and the tractor, wherein the connecting device is provided with a connecting hole; wherein, the optical-electrical composite cable includes: the optical fiber composite cable comprises a fiber core, a steel pipe layer, a first insulating layer, a cable layer, a second insulating layer and a steel wire outer armor, wherein the steel pipe layer, the first insulating layer, the cable layer, the second insulating layer and the steel wire outer armor are sequentially wrapped on the fiber core, the steel pipe layer and the first insulating layer form an optical fiber part of the photoelectric composite cable, and the cable layer and the second insulating layer which are detached from the outer side of the first insulating layer form a cable part of the photoelectric composite cable.

In some embodiments, the geological information collection device may further comprise: a clamping device, the clamping device comprising: a first clamping member and a second clamping member, which are butted against each other to clamp the optical composite cable outside the connecting device connecting the optical composite cable and the tractor between the first clamping member and the second clamping member.

The application provides a connecting device and geological information collection equipment who connects compound cable of photoelectricity and tractor, can connect compound cable of photoelectricity and tractor respectively through the connecting device who connects compound cable of photoelectricity and tractor, in order to form geological information collection equipment, and simultaneously, seal assembly's setting can seal the tip of optical fiber part, in order to prevent the unexpected tip that gets into the liquid contact optical fiber part in the body, and so as to reduce the probability that liquid contact optical fiber part damages in order to cause the fibre core of optical fiber part.

The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 schematically illustrates a perspective view of a coupling device connecting an opto-electric composite cable and a retractor;

FIG. 2 schematically illustrates a cross-sectional exploded view of the seal assembly;

FIG. 3 schematically illustrates a schematic view of the seal assembly proximate the first open side;

FIG. 4 schematically illustrates a sealing plug adjacent the first open side;

FIG. 5 schematically illustrates a cross-sectional view of a wire branching assembly;

FIG. 6 schematically illustrates a perspective view of a geological information acquisition device;

fig. 7 schematically illustrates a cross-sectional view of an optical-electrical composite cable.

The reference numbers illustrate:

10-connecting device for connecting photoelectric composite cable and retractor, 11-tube body, 111-first connecting structure, 12-sealing component, 121-sealing cap, 1211-first through hole, 122-sealing tube, 123-sealing plug, 124-extrusion structure, 1241-elastic sleeve, 1242-snap ring, 13-fixing component, 131-fixing plug, 1311-fifth through hole, 1312-sixth through hole, 132-butting column, 14-branching component, 141-inlet, 142-first outlet, 143-second outlet, 144-first branching component, 1441-fastening hole;

100-geological information acquisition equipment, 20-photoelectric composite cable, 21-cable part, 22-optical fiber part, 201-fiber core, 202-steel tube layer, 203-first insulating layer, 204-cable layer, 205-second insulating layer, 206-steel wire outer armor and 30-clamping device.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be noted that, unless otherwise specified, technical terms or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

First aspect

The present embodiment provides a connecting device 10 for connecting an optical composite cable and a retractor, referring to fig. 1 to 7, the connecting device 10 for connecting an optical composite cable and a retractor includes: body 11 and seal assembly 12, body 11 extend along first direction, and the opening at the both ends of body 11 along first direction is first opening and second opening respectively, and first opening is used for wearing the compound cable 20 of photoelectricity, and the second opening is used for connecting the tractor, and seal assembly 12 sets up in body 11, and seal assembly 12 includes: the sealing structure comprises a sealing cap 121, a sealing tube 122 and a sealing plug 123, wherein the sealing tube 122 extends along a first direction, the sealing cap 121 is in threaded connection with one end of the sealing tube 122 close to a first opening, the sealing cap 121 and the sealing tube 122 are in threaded connection and then are matched to form a squeezing cavity, a squeezing structure 124 is arranged in the squeezing cavity, the squeezing structure 124 is respectively abutted against the inner wall of the sealing cap 121 and the sealing tube 122, at least part of the squeezing structure 124 has elasticity, the sealing cap 121 and the squeezing structure 124 are respectively provided with a first through hole 1211 and a second through hole which are communicated with the inside of the sealing tube 122, and the sealing plug 123 is in threaded connection with one end of the sealing tube 122 close to a second opening and seals the opening of the sealing tube 122 close to the second opening; the photoelectric composite cable 20 penetrating through the first opening is split into a cable part 21 and an optical fiber part 22, the cable part 21 is connected with a retractor at the second opening, the optical fiber part 22 penetrates through the first through hole 1211 and the second through hole and extends into the sealing tube 122, and the optical fiber part 22 corresponding to two sides of the second through hole deforms to close the second through hole in the process that the sealing cap 121 is screwed with the sealing tube 122 and/or the sealing plug 123 is screwed with the sealing tube 122.

Specifically, the pipe body 11 extends in the first direction, and the inner wall/outer wall of the pipe body 11 may extend linearly in the first direction, may extend in a wave shape in the first direction, or may extend in another shape.

The first opening is used for penetrating the optical-electrical composite cable 20, the aperture of the first opening is larger than, smaller than or equal to the diameter of the optical-electrical composite cable 20, when the aperture of the first opening is larger than the diameter of the optical-electrical composite cable 20, the gap between the optical-electrical composite cable 20 and the first opening can be blocked by winding an insulating sealing material around the optical-electrical composite cable 20 to reduce the probability of liquid entering the pipe body 11 through the first opening, when the aperture of the first opening is smaller than the diameter of the optical-electrical composite cable 20, the optical-electrical composite cable 20 is in interference fit with the first opening, so that no gap exists between the optical-electrical composite cable 20 and the first opening to reduce the probability of liquid entering the pipe body 11 through the first opening, and when the aperture of the first opening is equal to the diameter of the optical-electrical composite cable 20, no gap exists between the optical-electrical composite cable 20 and the first opening to reduce the probability of liquid entering the pipe body 11 through the first opening.

The second opening is used for connecting a retractor, where the inner/outer wall of the tube 11 near the second opening may be provided with a first connecting structure 111, the retractor may be provided with a second connecting structure adapted to the first connecting structure 111, and when the second connecting structure is connected to the first connecting structure 111, the connection between the retractor and the tube 11 can be achieved, for example: referring to fig. 1, the first connection structure 111 is a ring of internal threads provided on the inner wall of the tube body 11, and the second connection structure is a ring of external threads provided on the retractor, whereby the connection of the ring of external threads and the ring of internal threads enables the connection of the retractor with the tube body 11. It should be noted that, after the retractor is connected to the tube 11, the retractor closes the second opening or a gap exists between the retractor and the second opening, and when the gap exists between the retractor and the second opening, the gap can be sealed by filling an insulating sealing material in the gap, so as to reduce the possibility of liquid entering the tube 11 from the second opening of the tube 11.

The sealing tube 122 extends along the first direction, and the inner tube wall/outer tube wall of the sealing tube 122 may extend linearly along the first direction, may extend in a wave shape along the first direction, or may extend in other shapes. The sealing cap 121 is screwed to one end of the sealing tube 122 near the first opening, and the sealing cap 121 may be screwed to a circle of inner wall of the sealing tube 122 or may be screwed to a circle of outer wall of the sealing tube 122. The sealing plug 123 is screwed to one end of the sealing tube 122 close to the second opening and closes the opening of the sealing tube 122 close to the second opening, that is, the sealing plug 123 is screwed to one inner wall or one outer wall of the sealing tube 121.

Here, the optical composite cable 20 is inserted into the tube 11 from the first opening of the tube 11, the optical composite cable 20 inserted into the tube 11 is split into a cable portion 21 and an optical fiber portion 22, the cable portion 21 is connected to a retractor connected to the second opening to supply power to the retractor, the optical fiber portion 22 is inserted into the sealing tube 122 through the first through hole 1211 and the second through hole, when the sealing cap 121 is further screwed to the sealing tube 122 after the sealing cap 123 is screwed to the sealing tube 122, the space in which the pressing structure 124 is located is gradually reduced to reduce the inner edge dimension (i.e., the diameter of the second through hole) of the pressing structure 124 and increase the outer edge dimension, and the inner edge of the pressing structure 124 presses the surface of the optical fiber portion 22 in the second through hole to prevent the optical fiber portion 22 from moving, and the end of the optical fiber portion 22 abuts against the sealing cap 123 such that the optical fiber portion 22 on the side of the second through hole close to the sealing cap 123 is axially pressed and deformed to block the second through hole, thereby sealing the end of the optical fiber portion 22 in the sealing assembly 12. Here, the optical fiber section 22 enables acquisition of geological information and transmission of data.

In this embodiment, the connecting device 10 for connecting the photoelectric composite cable and the tractor can respectively connect the photoelectric composite cable 20 and the tractor to form the geological information collection apparatus 100, and at the same time, the sealing component 12 is configured to seal the end of the optical fiber portion 22, so as to prevent the liquid accidentally entering the tube 11 from contacting the end of the optical fiber portion 22, thereby reducing the possibility that the liquid contacts the optical fiber portion 22 to damage the fiber core 201 of the optical fiber portion 22, such as: reducing the probability of hydrogen loss in the core 201.

In some embodiments, the pressing structure 124 is an elastic body, and after the sealing cap 121 and the sealing plug 123 are respectively screwed into the sealing tube 122, the elastic body is deformed to radially press the optical fiber portion 22 and limit the optical fiber portion 22 passing through the second through hole, and the limited optical fiber portion 22 is further subjected to an axial pressing force to be radially and convexly deformed, so that the end of the optical fiber portion 22 is sealed in the sealing assembly 12.

In other embodiments, referring to fig. 2, the crush feature 124 includes: the elastic sleeve 1241 and the snap ring 1242 are distributed in the first through hole 1211 along the first direction, the elastic sleeve 1241 and the snap ring 1242 are respectively provided with a third through hole and a fourth through hole, the third through hole and the fourth through hole correspond to each other to form a second through hole in a matching manner, the elastic sleeve 1241 is an elastic structural member, and the elasticity of the snap ring 1242 is smaller than that of the elastic sleeve 1241; after the sealing cap 121 and the sealing plug 123 are respectively screwed to the sealing tube 122, the elastic sleeve 1241 deforms to radially press the optical fiber portion 22, and two opposite sides of the elastic sleeve 1241 and the snap ring 1242 are respectively abutted to the sealing cap 121 and the sealing tube 122.

Specifically, the elastic sleeve 1241 and the snap ring 1242 are distributed in the first through hole 1211 along the first direction, and here, the snap ring 1242 may be disposed in the elastic sleeve 1241 or between the elastic sleeve 1241 and the sealing tube 122. The elastic sleeve 1241 is an elastic structure, and the elasticity of the snap ring 1242 is smaller than that of the elastic sleeve 1241, so that when the sealing cap 121 and the sealing tube 122 are screwed and/or the sealing plug 123 and the sealing tube 122 are/is screwed, the snap ring 1242 can support the elastic sleeve 1241, thereby reducing the probability that the elastic sleeve 1241 is squeezed into the sealing tube 122 in the screwing process.

In the embodiment, the extruding structure 124 has a simple structure, and compared with the structure in which the extruding structure 124 is an elastic body, the extruding structure 124 in the embodiment can reduce the probability of extruding the extruding structure 124 into the sealing tube 122 in the process of screwing the sealing cap 121 and the sealing tube 122 and/or the sealing plug 123 and the sealing tube 122.

In some embodiments, referring to fig. 2, the inner diameter of the first through hole 1211 increases along the first direction, the elastic sleeve 1241 abuts against the inner wall of the first through hole 1211, the inner diameter of the elastic sleeve 1241 increases along the first direction, the outer diameter of the snap ring 1242 does not change along the first direction, a circle of outer edge protrudes from the outer surface of the snap ring 1242 near one end of the sealing tube 122, one end of the snap ring 1242 near the elastic sleeve 1241 extends into the elastic sleeve 1241, and two sides of the circle of outer edge along the first direction abut against the elastic sleeve 1241 and the sealing tube 122, respectively. That is, the sealing cap 121, the elastic sleeve 1241 and the snap ring 1242 are sequentially engaged along the first direction.

In this embodiment, one end of the snap ring 1242 corresponding to the elastic sleeve 1241 abuts against a circle of inner wall of the elastic sleeve 1241, so that the portion of the elastic sleeve 1241 close to the optical fiber portion 22 can be extruded intensively in the extruding process, and the optical fiber portion 22 can be extruded quickly and radially to limit the optical fiber portion 22.

In some embodiments, referring to fig. 1 and 4, the connecting device 10 for connecting an optical composite cable to a retractor may further include: a fixing assembly 13, the fixing assembly 13 being disposed in the pipe body 11 and located between the first opening and the sealing assembly 12, the fixing assembly 13 including: the fixed plug 131 and the abutting column 132, the fixed plug 131 abuts against one circle of inner wall of the tube body 11, the fixed plug 131 is provided with a fifth through hole 1311, the radial dimension of the fifth through hole 1311 is smaller than or equal to the diameter of the photoelectric composite cable 20, and the abutting column 132 penetrates through the tube body 11 and abuts against the fixed plug 131; the optical electrical composite cable 20 penetrating through the first opening passes through the fifth through hole 1311, and the outer steel wire sheath 206 on the outer surface of the optical electrical composite cable 20 passing through the fifth through hole 1311 is bent in a direction opposite to the first direction and then abuts against the inner wall of the pipe body 11.

Specifically, the radial dimension of the fifth through hole 1311 is smaller than or equal to the diameter of the optical composite cable 20, and when the radial dimension of the fifth through hole 1311 is smaller than the diameter of the optical composite cable 20, the optical composite cable 20 is interference-fitted into the fifth through hole 1311 of the fixing plug 131. The fixing plug 131 may be a cylindrical shape extending in the first direction, and the outer surface of the cylindrical shape abuts against the inner wall of the pipe body 11, or may be a truncated cone shape increasing in the first direction as shown in fig. 1, or may have another shape.

The abutting post 132 passes through the tube 11 and abuts against the fixing plug 131 to reduce the possibility of the fixing plug 131 rotating in the tube 11, so as to reduce the possibility of the optical composite cable 20 twisting off in the tube 11 due to the rotation of the fixing plug 131. Here, the abutment post 132 may be a post having no screw thread on the surface, or a post having a screw thread on the surface, when the screw thread is provided on the surface of the abutment post 132, the hole of the pipe body 11 for penetrating the abutment post 132 is a screw hole to be screwed with the abutment post 132 in a matching manner, and the mode of screwing between the pipe body 11 and the abutment post 132 makes the displacement of the abutment post 132 after the connection of the abutment post 132 to the pipe body 11 smaller, thereby enabling better limitation of the fixing plug 131.

The optical electrical composite cable 20 penetrating through the first opening passes through the fifth through hole 1311, and the outer steel wire sheath 206 on the outer surface of the optical electrical composite cable 20 penetrating through the fifth through hole 1311 is bent in the direction opposite to the first direction and then abuts against the inner wall of the pipe body 11, where when a gap exists between the optical electrical composite cable 20 and the inner wall of the pipe body 11, the outer steel wire sheath 206 on the outer surface of the optical electrical composite cable 20 can be bent in the direction opposite to the first direction and then abuts against the inner wall of the pipe body 11 at the gap; when there is no gap between the optical composite cable 20 and the inner wall of the pipe 11, the outer steel wire sheath 206 on the outer surface of the optical composite cable 20 may be bent after passing through the fifth through hole 1311 and extending for a distance.

In this embodiment, the position of the composite optical/electrical cable 20 can be limited by the fixing component 13, so as to reduce the probability of displacement of the composite optical/electrical cable 20, and meanwhile, the bent portion of the outer steel wire sheath 206 forms a weak point of the composite optical/electrical cable 20, so that the outer steel wire sheath 206 at the fixed plug 131 can be broken when the geological information acquisition device 100 encounters a complex situation in the underground, so as to ensure that the middle of the composite optical/electrical cable 20 cannot be broken, and facilitate later fishing.

In some embodiments, referring to fig. 1, the inner diameter of the first section of the pipe 11 at the end corresponding to the first opening increases along the first direction, the fixed plug 131 abuts against a circle of the inner wall of the first section of the pipe, the fixed plug 131 opens a plurality of sixth through holes 1312 around the fifth through hole 1311, and the steel wire outer sheath 206 is bent to be divided into a plurality of bundles and passes through the plurality of sixth through holes 1312 to abut against the inner wall of the first section of the pipe.

Specifically, the radial shape of the sixth through hole 1312 may be circular, regular hexagonal, or other shapes. The outer armour 206 of steel wire in the above-mentioned is divided into the multibeam after buckling and passes a plurality of sixth through-holes 1312 respectively with the inner wall of butt first section body, here, a plurality of sixth through-holes 1312 can be along an arc line arrangement, also can be along an annular line arrangement, the outer armour 206 of steel wire is the one deck protective layer of optoelectrical composite cable 20 surface, it is annular structure, a plurality of sixth through-holes 1312 set up around fifth through-hole 1311, from this, can correspond in every sixth through-hole 1312 and wear to establish its near outer armour 206 of steel wire.

In this embodiment, the inner diameter of the first section of pipe body is increased along the first direction, so that when the optical/electrical composite cable 20 is pulled along the second direction opposite to the first direction, the first section of pipe body can block the fixing plug 131 to bear the pulling force.

In some embodiments, referring to fig. 1 and 5, the connecting device 10 for connecting an optical composite cable to a retractor may further include: the branching assembly 14 is arranged in the tube body 11 and located between the fixing assembly 13 and the sealing assembly 12, the branching assembly 14 is provided with an inlet 141, a first outlet 142 and a second outlet 143 which are communicated in pairs, the inlet 141 is close to the fifth through hole 1311, the inlet 141 is used for penetrating the photoelectric composite cable 20, the first outlet 142 is used for penetrating the cable part 21, and the second outlet 143 is used for penetrating the optical fiber part 22.

Here, the diameter of the inlet 141 is greater than, less than, or equal to the diameter of the optical composite cable 20, when the diameter of the inlet 141 is greater than the diameter of the optical composite cable 20, an insulating sealing material may be filled in a gap between the inlet 141 and the optical composite cable 20, and when the diameter of the inlet 141 is less than the diameter of the optical composite cable 20, the optical composite cable 20 is interference-fitted to the inlet 141. This reduces the possibility that liquid accidentally entering the pipe body 11 enters the distribution assembly 14 through the space between the inlet 141 and the optical/electrical composite cable 20 that is not separated.

The first outlet 142 has a diameter larger than, smaller than, or equal to the diameter of the cable part 21, and when the diameter of the first outlet 142 is larger than the diameter of the cable part 21, an insulating sealing material may be filled between the first outlet 142 and the cable part 21, and when the diameter of the first outlet 142 is smaller than the diameter of the cable part 21, the cable part 21 is interference-fitted to the first outlet 142. This reduces the possibility that liquid accidentally entering the pipe body 11 enters the distribution assembly 14 through the space between the first outlet 142 and the cable part 21.

The diameter of the second outlet 143 is greater than, less than, or equal to the diameter of the optical fiber portion 22, and when the diameter of the second outlet 143 is greater than the diameter of the optical fiber portion 22, an insulating sealing material may be filled between the second outlet 143 and the optical fiber portion 22, and when the diameter of the second outlet 143 is less than the diameter of the optical fiber portion 22, the optical fiber portion 22 is interference-fitted to the second outlet 143. This reduces the possibility that liquid accidentally entering the tube 11 will enter the distribution unit 14 through the space between the second outlet 143 and the optical fiber portion 22.

In this embodiment, the optical/electrical composite cable 20 can be separated into the cable part 21 and the optical fiber part 22 by disposing the splitter assembly 14, and the optical/electrical composite cable 20 that is not separated and the separated cable part 21 and optical fiber part 22 can be fixed, respectively.

In some embodiments, referring to fig. 1 and 5, the breakout assembly 14 includes: the first branch piece 144 and the second branch piece are butted to form a branch cavity, one end of the first branch piece 144, which is butted with the second branch piece, is matched to form an inlet 141, one side of the first branch piece 144, which is butted with the second branch piece, is matched to form a first outlet 142, the other end of the first branch piece 144, which is butted with the second branch piece, is matched to form a second outlet 143, and the fastener detachably connects the first branch piece 144 and the second branch piece.

Here, referring to fig. 5, the first wire member 144 may be provided with a fastening hole 1441 having an internal thread structure, and the second wire member is provided with a corresponding hole having an internal thread, so that a screw as a fastening member can be screwed into the fastening hole 1441 of the first wire member 144 and the hole of the second wire member, respectively.

In this embodiment, the first splitter 144 and the second splitter are detachably connected by fasteners, so that the splitting positions of the optical/electrical composite cable 20, the cable portion 21, and the optical fiber portion 22 in the splitter assembly 14 can be easily adjusted.

Illustratively, the breakout assembly 14 includes: the device comprises a first line dividing part and a second line dividing part, wherein a first strip-shaped concave part and a second strip-shaped concave part are sunken in one side of the first line dividing part, the first strip-shaped concave part extends along a first direction, two ends of the first strip-shaped concave part respectively correspond to edges of two ends of the first line dividing part along the first direction, one end of the second strip-shaped concave part is communicated with the first strip-shaped concave part, and the other end of the second strip-shaped concave part corresponds to an edge of one side of the first line dividing part along the first direction; the second branching piece is butted with one side of the first branching piece, which is provided with the first strip-shaped concave part; wherein, the two ends of the first strip-shaped concave part are matched with the second line dividing element to form an inlet 141 and a second outlet 143, and the second strip-shaped concave part is matched with the second line dividing element to form the second outlet 143. The first strip-shaped recess in this embodiment defines the non-split optical/electrical composite cable 20 and the split optical fiber section 22, and the second strip-shaped recess defines the split cable section 21.

It can be understood that, in order to make the first strip-shaped concave portion perform better limitation on the optical composite cable 20 before being split and the optical fiber portion 22 after being split, the size of the first strip-shaped concave portion corresponding to the optical composite cable 20 before being split is consistent with that of the optical composite cable 20 before being split, and the size of the corresponding optical fiber portion 22 is consistent with that of the optical fiber portion 22. In order to make the second strip-shaped concave portion perform better limit on the split cable part 21, the size of the second strip-shaped concave portion is consistent with that of the cable part 21.

In some embodiments, referring to fig. 1, the caliber of the first opening is less than or equal to the diameter of the composite optical cable 20, and the composite optical cable 20 is interference fit to the first opening when the caliber of the first opening is less than the diameter of the composite optical cable 20; the retractor is connected with the second opening and then closes the second opening. Therefore, when the optical/electrical composite cable 20 passes through the first opening to be connected with the pipe body 11, and the retractor is connected with the first connecting structure 111 to be connected with the pipe body 11, the optical/electrical composite cable 20 can seal the first opening at one end of the pipe body 11, and the retractor seals the second opening at one end of the pipe body 11. Thereby, the probability of liquid accidentally entering the tube body 11 can be reduced, and meanwhile, the openings at the two ends of the tube body 11 can be sealed without other insulating sealing materials, so that the working time required by sealing and the workload brought by the sealing can be reduced.

Second aspect of the invention

Based on the same concept, the application also provides geological information acquisition equipment 100. Referring to fig. 6, the geological information collection apparatus 100 comprises: a composite optical cable 20, a retractor and a connecting device 10 for connecting the composite optical cable and the retractor according to any one of the above; wherein, the optical-electrical composite cable 20 includes: the optical fiber composite cable comprises a fiber core 201, a steel pipe layer 202, a first insulating layer 203, a cable layer 204, a second insulating layer 205 and a steel wire outer sheath 206, wherein the steel pipe layer 202, the first insulating layer 203, the cable layer 204, the second insulating layer 205 and the steel wire outer sheath 206 are sequentially wrapped on the fiber core 201, the steel pipe layer 202 and the first insulating layer 203 form an optical fiber part 22 of the optical-electrical composite cable 20, and the cable layer 204 and the second insulating layer 205 which are separated from the outer side of the first insulating layer 203 form a cable part 21 of the optical-electrical composite cable 20.

Specifically, the number of cores 201 in the above is not limited, and for example: referring to fig. 7, the number of cores 201 is 4.

In this embodiment, the photoelectric composite cable 20 has both a power supply function and a collection transmission function, so that a logging instrument may not be separately provided, and the volume of the geological information collection device 100 may be reduced.

In some embodiments, referring to fig. 6, the geological information acquisition apparatus 100 may further comprise: a holding device 30, the holding device 30 comprising: a first clamping member and a second clamping member which are butted against each other to clamp the optical composite cable 20 outside the connecting device 10 connecting the optical composite cable and the retractor between the first clamping member and the second clamping member.

Specifically, strip-shaped concave portions corresponding to each other may be recessed between the first clamping member and the second clamping member in a direction away from each other, so that the first clamping member and the second clamping member are abutted to form a passage for the optical/electrical composite cable 20. Here, the first clamping member and the second clamping member may be butted by welding, may be butted by screwing the first clamping member and the second clamping member with screws, and may be butted by other methods.

Here, the number of the holding devices 30 in the geological information acquisition apparatus 100 may be 1, or may be plural, such as: referring to fig. 6, the number of the clamping devices 30 is 3, and the 3 clamping devices 30 are sequentially spaced apart along the extending direction of the optical/electrical composite cable 20.

In this embodiment, the photoelectric composite cable 20 outside the pipe body 11 can be clamped by the clamping device 30, and after the geological information acquisition device 100 breaks the photoelectric composite cable 20 when being clamped, the photoelectric composite cable 20 is clamped by the clamping device 30 and is not scattered, so that the probability of secondary construction accidents caused by scattering of the steel wire outer armor 206 can be reduced.

In some embodiments, referring to fig. 1 to 7, the geological information collection apparatus 100 comprises: the connecting device 10 for connecting the photoelectric composite cable and the tractor, the photoelectric composite cable 20, the tractor and 3 clamping devices 30, wherein the connecting device 10 for connecting the photoelectric composite cable and the tractor is respectively connected with one end of the photoelectric composite cable 20 and the tractor.

The optical/electrical composite cable 20 includes: the optical fiber composite cable comprises a fiber core 201, a steel pipe layer 202, a first insulating layer 203, a cable layer 204, a second insulating layer 205 and a steel wire outer sheath 206, wherein the steel pipe layer 202, the first insulating layer 203, the cable layer 204, the second insulating layer 205 and the steel wire outer sheath 206 are sequentially wrapped on the fiber core 201, the steel pipe layer 202 and the first insulating layer 203 form an optical fiber part 22 of the optical-electrical composite cable 20, and the cable layer 204 and the second insulating layer 205 which are separated from the outer side of the first insulating layer 203 form a cable part 21 of the optical-electrical composite cable 20.

The connecting device 10 for connecting an optical/electrical composite cable to a retractor includes: body 11, seal assembly 12, fixed subassembly 13 and branch line subassembly 14.

The pipe body 11 extends along a first direction, openings at two ends of the pipe body 11 along the first direction are a first opening and a second opening respectively, the caliber of the first opening is equal to the diameter of the photoelectric composite cable 20, the photoelectric composite cable 20 penetrates through the first opening and then seals the first opening, a first connecting structure 111 connected with a tractor is arranged at a position of the pipe body 11 close to the second opening, the first connecting structure 111 is a circle of threads arranged on the inner wall of the pipe body 11, and the tractor and the first connecting structure 111 are in threaded connection and then seal a first outlet 142 of the pipe body 11.

The seal assembly 12 is disposed in the pipe body 11, and the seal assembly 12 includes: sealing cap 121, sealing tube 122 and sealed end cap 123, sealing tube 122 extends along first direction, sealing cap 121 and sealing tube 122 are close to first open-ended one end spiro union, both cooperations form the extrusion chamber behind sealing cap 121 and the sealing tube 122 spiro union, be provided with extrusion structure 124 in the extrusion chamber, extrusion structure 124 abuts sealing cap 121 and sealing tube 122 respectively, at least part extrusion structure 124 has elasticity, first through-hole 1211 and the second through-hole of intercommunication sealing tube 122 inside are seted up respectively to sealing cap 121 and extrusion structure 124, sealed end cap 123 is close to the one end spiro union of second open-ended and seals sealing tube 122 and be close to the opening of second open-ended with sealing tube 122. The pressing structure 124 includes: elastic sleeve 1241 and snap ring 1242, elastic sleeve 1241 and snap ring 1242 distribute in first through-hole 1211 along the first direction, third through-hole and fourth through-hole have been seted up respectively to elastic sleeve 1241 and snap ring 1242, third through-hole and fourth through-hole correspond each other with the cooperation formation second through-hole, elastic sleeve 1241 is elastic construction spare, behind sealed cap 121 and the sealed end cap 123 spiro union in sealed tube 122 respectively, elastic sleeve 1241 takes place to deform in order to radially extrude optic fibre portion 22, and the both sides that elastic sleeve 1241 and snap ring 1242 carried on the back each other do not butt sealed cap 121 and sealed tube 122. The inner diameter of the first through hole 1211 is increasing along the first direction, the elastic sleeve 1241 abuts against the inner wall of the first through hole 1211, the inner diameter of the elastic sleeve 1241 is increasing along the first direction, the outer diameter of the snap ring 1242 is unchanged along the first direction, a circle of outer edge is arranged on the outer surface of one end, close to the sealing tube 122, of the snap ring 1242 in a protruding mode, one end, close to the elastic sleeve 1241, of the snap ring 1242 extends into the elastic sleeve 1241, and two sides of the circle of outer edge along the first direction abut against the elastic sleeve 1241 and the sealing tube 122 respectively.

The fixing member 13 is disposed in the pipe body 11 and between the first opening and the sealing member 12, and the fixing member 13 includes: fixed end cap 131 and butt post 132, fixed end cap 131 has seted up fifth through-hole 1311 and the round sixth through-hole 1312 around fifth through-hole 1311, the internal diameter of fixed end cap 131 equals the diameter of optoelectrical composite cable 20, the internal diameter of the first section body that body 11 corresponds first opening one end is the increase trend along first direction, the round inner wall of fixed end cap 131 butt first section body, the outer armour 206 of the steel wire in the optoelectrical composite cable 20 outside is divided into the multibeam and passes the inner wall of a plurality of sixth through-holes 1312 with butt first section body respectively after buckling with the opposite direction of first direction, butt post 132 passes body 11 and butt fixed end cap 131.

The branching assembly 14 is disposed in the tube 11 and located between the fixing assembly 13 and the sealing assembly 12, the branching assembly 14 is provided with an inlet 141, a first outlet 142 and a second outlet 143 which are communicated with each other two by two, the inlet 141 is close to the fifth through hole 1311, the inlet 141 is used for penetrating the optical-electrical composite cable 20 of the non-split part, the first outlet 142 is used for penetrating out the split cable part 21, and the second outlet 143 is used for penetrating out the split optical fiber part 22. The branching assembly 14 includes: the first branch piece 144 and the second branch piece are butted to form a branch cavity, one end of the first branch piece 144, which is butted with the second branch piece, is matched with one end of the second branch piece to form an inlet 141, one side of the first branch piece 144, which is butted with the second branch piece, is matched with one side of the second branch piece to form a first outlet 142, the other end of the first branch piece 144, which is butted with the second branch piece, is matched with the other end of the second branch piece to form a second outlet 143, and the fastening pieces are respectively screwed with the first branch piece 144 and the second branch piece.

Here, the optical composite cable 20 is inserted into the tube 11 through the first opening of the tube 11, the optical composite cable 20 inserted into the tube 11 is split into a cable portion 21 and an optical fiber portion 22, the cable portion 21 is connected to a retractor connected to the first connecting structure 111 to supply power to the retractor, and the optical fiber portion 22 is inserted into the sealing tube 122 through the first through hole 1211 and the second through hole to seal the end of the optical fiber portion 22 in the sealing assembly 12.

The 3 clamping devices 30 are respectively connected with the photoelectric composite cable 20 outside the connecting device 10 for connecting the photoelectric composite cable and the tractor, and the 3 clamping devices 30 are sequentially arranged along the extending direction of the photoelectric composite cable 20. The holding device 30 includes: the optical and electrical composite cable retractor comprises a first clamping piece, a second clamping piece and screws, wherein the first clamping piece and the second clamping piece are butted with each other to clamp the optical and electrical composite cable 20 outside a connecting device 10 for connecting the optical and electrical composite cable and the retractor between the first clamping piece and the second clamping piece, and the screws are respectively screwed with the first clamping piece and the second clamping piece to realize the butting of the first clamping piece and the second clamping piece.

Referring to fig. 6, one method of assembly is: a. the photoelectric composite cable 20 penetrates into the first opening and penetrates out of the second opening, then the photoelectric composite cable 20 penetrating out of the second opening penetrates through the fifth through hole 1311 of the fixing plug 131, the outer steel wire sheaths 206 on the outer side of the photoelectric composite cable 20 are split into a plurality of bundles to respectively penetrate through the sixth through holes 1312 to be bent, and the second insulating layer 205 is exposed after the photoelectric composite cable 20 bends the outer steel wire sheaths 206; b. splitting the second insulating layer 205 and the cable layer 204 outside the optical-electrical composite cable 20 of the portion of the steel-wire-free outer sheath 206 that passes out from the fifth through hole 1311 to form a cable portion 21, then respectively clamping the optical-electrical composite cable 20, the cable portion 21 and the optical fiber portion 22 of the portion of the steel-wire-free outer sheath 206 through the first wire splitting member 144 and the second wire splitting member, respectively screwing the first wire splitting member 144 and the second wire splitting member through the fasteners to realize the butt joint of the first wire splitting member 144 and the second wire splitting member, wherein the optical-electrical composite cable 20 of the portion of the steel-wire-free outer sheath 206 formed after the first wire splitting member 144 and the second wire splitting member are butted penetrates into the cable portion 21 from the inlet 141 and passes out from the first outlet 142, and the optical fiber portion 22 passes out from the second opening 143; c. the optical fiber portion 22 coming out from the second opening 143 is inserted into the sealing member 12 for sealing; d. pulling the photoelectric composite cable 20 in a direction opposite to the first direction, so that the fixing plug 131, the branching assembly 14 and the sealing assembly 12 are pulled into the tube body 11 until the fixing plug 131 and the bent steel wire outer sheath 206 are all abutted against the first section of tube body, and then the abutting column 132 penetrates through the tube body 11 and abuts against the first section of tube body; e. the optical composite cable 20 is connected to the tractor by clamping 3 clamping devices 30 on the outer surface of one end of the connecting device 10, and after the screw of each clamping device 30 is connected, pulling the optical composite cable 20 relative to each clamping device 30 to ensure that each clamping device 30 clamps the optical composite cable 20. Here, when the relative pulling causes the relative displacement between the clamping device 30 and the optical composite cable 20, the inner diameter of the clamping channel of the clamping device 30 after the replacement for clamping the optical composite cable 20 can be smaller than that of the clamping device 30 after the replacement by tightening the screw again or replacing the clamping device 30.

Here, the optical composite cable 20 located in the sealing tube 122 can be pulled out and tied before the sealing plug 123 is connected, and then pushed back into the sealing tube 122, so as to improve the sealing performance between the optical composite cable 20 and the sealing assembly 12.

It should be noted that the connection device for connecting the optical electrical composite cable and the tractor in the geological information acquisition equipment provided by the embodiment of the present application is similar to the description of the connection device for connecting the optical electrical composite cable and the tractor in the above description, and has similar beneficial effects to the connection device for connecting the optical electrical composite cable and the tractor in the above description. For technical details that are not disclosed in the embodiments of the geological information acquisition equipment of the present application, please refer to the description of the embodiments of the connection device for connecting the optical-electrical composite cable and the tractor in the present application, and detailed description thereof is omitted here.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A coupling device for coupling an opto-electric composite cable to a retractor, comprising:

the tube body extends along a first direction, openings at two ends of the tube body along the first direction are respectively a first opening and a second opening, the first opening is used for penetrating the photoelectric composite cable, and the second opening is used for connecting the tractor; and (c) and (d),

a seal assembly disposed within the tube, the seal assembly comprising: the sealing pipe extends along the first direction, the sealing cap is in threaded connection with one end, close to the first opening, of the sealing pipe, the sealing cap is in threaded connection with the sealing pipe, the sealing cap is matched with the sealing pipe in a threaded connection mode to form an extrusion cavity, an extrusion structure is arranged in the extrusion cavity, the extrusion structure is abutted to the inner wall of the sealing cap and the sealing pipe respectively, at least part of the extrusion structure is elastic, a first through hole and a second through hole communicated with the inside of the sealing pipe are formed in the sealing cap and the extrusion structure respectively, and the sealing plug is in threaded connection with one end, close to the second opening, of the sealing pipe and seals the opening, close to the second opening, of the sealing pipe;

the photoelectric composite cable penetrating from the first opening is split into a cable part and an optical fiber part, the cable part is connected with a tractor at the second opening, the optical fiber part penetrates through the first through hole and the second through hole and extends into the sealing tube, and the optical fiber parts corresponding to two sides of the second through hole deform to close the second through hole in the process that the sealing cap is in threaded connection with the sealing tube and/or the sealing plug is in threaded connection with the sealing tube.

2. The connecting device for connecting an optical composite cable and a retractor according to claim 1,

the extrusion structure includes: the elastic sleeve and the snap ring are distributed in the first through hole along the first direction, the elastic sleeve and the snap ring are respectively provided with a third through hole and a fourth through hole, the third through hole and the fourth through hole correspond to each other to form the second through hole in a matched mode, the elastic sleeve is an elastic structural member, and the elasticity of the snap ring is smaller than that of the elastic sleeve;

wherein, sealed cap with sealed end cap spiro union respectively behind the sealed tube, the elastic sleeve takes place deformation in order to radially extrude the optic fibre part, just the elastic sleeve with the both sides that the snap ring carried on the back each other do not the butt sealed cap with the sealed tube.

3. The connecting device for connecting an opto-electric composite cable and a retractor according to claim 2,

the inner diameter of the first through hole is increased along the first direction;

the elastic sleeve is abutted against the inner wall of the first through hole, and the inner diameter of the elastic sleeve is increased along the first direction;

the outer diameter of the clamping ring is along the first direction is invariable, the clamping ring is close to the outer surface bulge of one end of the sealing tube is provided with a circle of outer edge, the clamping ring is close to one end of the elastic sleeve extends into the elastic sleeve, and the circle of outer edge is along the two sides of the first direction are respectively abutted to the elastic sleeve and the sealing tube.

4. The connection device for connecting an optical composite cable and a retractor according to any one of claims 1 to 3, further comprising:

a securing assembly disposed within the tube and between the first opening and the sealing assembly, the securing assembly comprising: the fixed plug is abutted to the inner wall of one circle of the pipe body, a fifth through hole is formed in the fixed plug, the radial size of the fifth through hole is smaller than or equal to the diameter of the photoelectric composite cable, and the abutting column penetrates through the pipe body and abuts against the fixed plug;

the photoelectric composite cable penetrating from the first opening penetrates through the fifth through hole, and a steel wire outer armor on the outer surface of the photoelectric composite cable penetrating through the fifth through hole is bent in the direction opposite to the first direction and then abuts against the inner wall of the pipe body.

5. The connecting device for connecting an optical composite cable and a retractor according to claim 4,

the inner diameter of a first section of the pipe body corresponding to one end of the first opening is increased along the first direction;

the fixed plug is abutted against the inner wall of the circle of the first section of the pipe body, a plurality of sixth through holes are formed in the fixed plug around the fifth through holes, and the outer armor of the steel wire is bent and then divided into a plurality of bundles which respectively penetrate through the sixth through holes to abut against the inner wall of the first section of the pipe body.

6. The connecting device for connecting an opto-electric composite cable to a retractor according to claim 4, further comprising:

the branching assembly is arranged in the pipe body and located between the fixing assembly and the sealing assembly, the branching assembly is provided with an inlet, a first outlet and a second outlet which are communicated in pairs, the inlet is close to the fifth through hole, the inlet is used for penetrating the photoelectric composite cable, the first outlet is used for penetrating out of the cable part, and the second outlet is used for penetrating out of the optical fiber part.

7. The coupling device for connecting an opto-electric composite cable to a retractor according to claim 6,

the branching assembly includes: the first branch piece and the second branch piece are butted to form a branch cavity, one butted ends of the first branch piece and the second branch piece are matched to form the inlet, one butted sides of the first branch piece and the second branch piece are matched to form the first outlet, the other butted ends of the first branch piece and the second branch piece are matched to form the second outlet, and the fastener is detachably connected with the first branch piece and the second branch piece.

8. The connecting device for connecting an opto-electric composite cable and a retractor according to claim 1,

the caliber of the first opening is smaller than or equal to the diameter of the photoelectric composite cable, and the photoelectric composite cable is in interference fit with the first opening when the caliber of the first opening is smaller than the diameter of the photoelectric composite cable;

the retractor is connected with the second opening and then closes the second opening.

9. A geological information acquisition device, characterized by comprising:

an opto-electric composite cable, a retractor and a connection device for connecting an opto-electric composite cable and a retractor according to any one of claims 1 to 8;

wherein, the optical-electrical composite cable includes: the photoelectric composite cable comprises a fiber core, a steel pipe layer, a first insulating layer, a cable layer, a second insulating layer and a steel wire outer armor, wherein the steel pipe layer, the first insulating layer, the cable layer, the second insulating layer and the steel wire outer armor are sequentially wrapped on the fiber core, the steel pipe layer and the first insulating layer form an optical fiber part of the photoelectric composite cable, and the cable layer and the second insulating layer which are separated from the outer side of the first insulating layer form a cable part of the photoelectric composite cable.

10. The geological information collection device of claim 9, further comprising:

a clamping device, the clamping device comprising: a first clamping member and a second clamping member, which are butted against each other to clamp the optical composite cable outside the connecting device connecting the optical composite cable and the tractor between the first clamping member and the second clamping member.

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