CN110474282B

CN110474282B - Cable sealing device

Info

Publication number: CN110474282B
Application number: CN201910688692.6A
Authority: CN
Inventors: 李海; 席志成; 程浩宇; 曾庆威; 马平安; 李相远
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-12-08
Anticipated expiration: 2039-07-29
Also published as: CN110474282A

Abstract

The invention discloses a cable sealing device, and belongs to the field of cable installation. The cable sealing device includes: the cable connector comprises an expandable inner ring mechanism, an expandable outer ring mechanism and a connecting ring, wherein the expandable inner ring mechanism, the expandable outer ring mechanism and the connecting ring are concentric, the outer peripheral wall of the expandable inner ring mechanism is in sealing connection with the inner peripheral wall of the connecting ring, the inner peripheral wall of the expandable outer ring mechanism is in sealing connection with the outer peripheral wall of the connecting ring, the expandable inner ring mechanism is used for being tightly hooped on a cable, and the expandable outer ring mechanism is used for being tightly propped against the inner peripheral wall of a cable through hole. The cable sealing device provided by the embodiment of the invention can adapt to the sealing of gaps between cables with different sizes and cable through holes with different sizes, and is simple and convenient to construct.

Description

Cable sealing device

Technical Field

The invention relates to the field of cable installation, in particular to a cable sealing device.

Background

At present, in the cable wall-penetrating construction, a stuffing box or a fire clay sealing mode is generally adopted to seal a gap between a cable and a through hole so as to realize the gap protection after the cable penetrates through the wall.

In the process of implementing the invention, the inventor finds that the prior art has at least the following problems: the adoption of the stuffing boxes leads to that the cables with different external diameter specifications need to adopt the stuffing boxes with different specifications, and the standardized construction is difficult to realize; the gaps between the cables and the through holes are plugged by the fireproof mud, so that the problems that the construction amount of the fireproof mud plugging work is large and the hardening time of the fireproof mud is long are solved.

Disclosure of Invention

The embodiment of the invention provides a cable sealing device which can adapt to the sealing of gaps between cables with different sizes and cable through holes with different sizes and is simple and convenient to construct. The technical scheme is as follows:

the invention provides a cable sealing device which comprises an expandable inner ring mechanism, an expandable outer ring mechanism and a connecting ring, wherein the expandable inner ring mechanism, the expandable outer ring mechanism and the connecting ring are concentric, the outer peripheral wall of the expandable inner ring mechanism is connected with the inner peripheral wall of the connecting ring in a sealing mode, the inner peripheral wall of the expandable outer ring mechanism is connected with the outer peripheral wall of the connecting ring in a sealing mode, the expandable inner ring mechanism is used for being tightly hooped on a cable, and the expandable outer ring mechanism is used for being tightly abutted to the inner peripheral wall of a cable through hole.

Optionally, the expandable inner ring mechanism comprises a first air bag and a telescopic inner shell, the first air bag is provided with at least one first air nozzle, the telescopic inner shell covers the inner wall of the first air bag and is used for contacting with the outer peripheral wall of the cable,

the outer ring mechanism of inflatable includes second gasbag and scalable shell, be equipped with at least one second air cock on the second gasbag, scalable shell cover in the outer wall of second gasbag, and be used for with the fenestrate interior perisporium contact of cable.

Optionally, when a plurality of first air nozzles are arranged on the first air bag, the plurality of first air nozzles are uniformly spaced on a first surface and a second surface of the first air bag, the first surface and the second surface are parallel, and the first surface and the second surface are respectively perpendicular to the length direction of the cable,

when be equipped with a plurality ofly on the second gasbag during the second air cock, it is a plurality of the even interval arrangement of second air cock is in the third surface and the fourth surface of second gasbag, the third surface with the fourth surface is parallel, just the third surface with the fourth surface respectively with the length direction of cable is perpendicular.

Optionally, the inner collapsible shell includes a protective inner ring and an overlapping section, the protective inner ring is a split ring, a first open end of the protective inner ring is fixed with a first end of the overlapping section, a second end of the overlapping section covers the opening of the protective inner ring and is located on the outer circumferential wall of the protective inner ring, and the overlapping section is configured to slide along the outer circumferential wall of the protective inner ring when the first balloon expands and contracts the opening of the protective inner ring.

Optionally, the retractable housing includes a protection outer ring and an extension section, the protection outer ring is an unclosed ring, a first unclosed end of the protection outer ring is fixed to a first end of the second extension section, a second end of the second extension section extends along the outer peripheral wall of the protection outer ring, and the extension section is used for covering the second airbag located between the first unclosed end and the second unclosed end of the protection outer ring when the second airbag expands and struts the protection outer ring.

Optionally, the cable sealing device further comprises a cable clamp, the cable clamp is hinged to the connecting ring through a connecting rod, and the cable clamp is used for clamping the cable.

Optionally, the cable clamp includes a first member and a second member, the middle portion of the first member and the middle portion of the second member are hinged, the first member and the second member are X-shaped, the first end of the first member and the first end of the second member are both semi-annular, the first end of the first member and the first end of the second member enclose a clamping portion for clamping the cable, and the second end of the first member and the second end of the second member together form a hand holding portion for clamping the cable.

Optionally, the second end of the first member and the second end of the second member are connected by a spring.

Optionally, the first end of the first member and the second end of the second member are respectively provided with a plurality of rollers for sliding along the cable under the action of the force applied by the hand grip portion to change the position of the cable sealing device on the cable.

Optionally, the connecting ring is made of plastic.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: the expandable inner ring mechanism and the expandable outer ring mechanism are connected through the connecting ring and are concentrically arranged, and the expandable inner ring mechanism is used for being tightly hooped on cables and can adapt to cables with different diameters; the expandable outer ring mechanism is tightly propped against the inner peripheral wall of the cable through hole and can adapt to different holes; like this, no matter cable external diameter size, wall hole diameter size all can use the cable sealing device of same specification, through the inflation of adjustment expandable inner ring mechanism, expandable outer loop mechanism, realize effectively sealing to the clearance between cable and the wall hole, the construction is comparatively simple and the engineering time is shorter, the effectual work efficiency that has improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a cable sealing device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a retractable inner shell provided in an embodiment of the present invention in a normal state;

FIG. 4 is a schematic structural view of the inner retractable shell in a retracted state according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a retractable housing provided in an embodiment of the present invention in a normal state;

fig. 6 is a schematic structural diagram of the retractable housing provided in the embodiment of the present invention in the extended state;

fig. 7 is a schematic structural view of a cable sealing device provided by an embodiment of the present invention;

fig. 8 is a schematic structural view of a cable clamp according to an embodiment of the present invention;

FIG. 9 is a schematic view of the cable sealing device and the hole before inflation according to an embodiment of the present invention;

FIG. 10 is a schematic view of the cable sealing device and the hole after inflation according to an embodiment of the present invention.

In the drawings, 1 an inflatable inner ring mechanism, 2 an inflatable outer ring mechanism, 3 a connecting ring, 11 a first air bag, 12a telescopic inner shell, 13 a first air nozzle, 21 a second air bag, 22a telescopic outer shell, 23 a second air nozzle, 12a protective inner ring, 12b overlapping section, 22a protective outer ring, 22b extending section, 4 cable clamps, 5 connecting rods, 41 a first part, 42 a second part, 43 clamping parts, 44 hand holding parts, 45 springs and 46 rollers.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a cable sealing device according to an embodiment of the present invention. Fig. 2 is a sectional view a-a of fig. 1. Referring to fig. 1 and 2, the cable sealing apparatus includes: an expandable inner ring mechanism 1, an expandable outer ring mechanism 2 and a connecting ring 3. The expandable inner ring mechanism 1, the expandable outer ring mechanism 2 and the connecting ring 3 are concentric, the outer peripheral wall of the expandable inner ring mechanism 1 is connected with the inner peripheral wall of the connecting ring 3 in a sealing mode, and the inner peripheral wall of the expandable outer ring mechanism 2 is connected with the outer peripheral wall of the connecting ring 3 in a sealing mode. The expandable inner ring means 1 is adapted to grip the cable and the expandable outer ring means 2 is adapted to grip the inner circumferential wall of the cable bore.

In the embodiment of the invention, an expandable inner ring mechanism 1 and an expandable outer ring mechanism 2 are connected through a connecting ring 3 and are concentrically arranged, and the expandable inner ring mechanism 1 is used for being tightly hooped on cables and can adapt to cables with different diameters; the expandable outer ring mechanism 2 is tightly propped against the inner peripheral wall of the cable through hole and can adapt to different holes; like this, no matter cable external diameter size, wall hole diameter size all can use the cable sealing device of same specification, through the inflation of adjustment expandable inner ring mechanism 1, expandable outer loop mechanism 2, realize the effective sealing to the clearance between cable and the wall hole, the construction is comparatively simple and construction time is shorter, the effectual work efficiency that has improved.

The material of the connection ring 3 is, for example, a non-metallic solid material, such as plastic. Preferably, the connection ring 3 is a ring plate made of phenolic resin.

Illustratively, referring to fig. 1 and 2, the expandable inner ring mechanism 1 includes a first balloon 11 and a retractable inner shell 12, the first balloon 11 is provided with at least one first air nozzle 13, and the retractable inner shell 12 covers the inner wall of the first balloon 11 and is used for contacting with the outer peripheral wall of the cable. The expandable outer ring mechanism 2 comprises a second air bag 21 and a telescopic shell 22, wherein at least one second air nozzle 23 is arranged on the second air bag 21, and the telescopic shell 22 covers the outer wall of the second air bag 21 and is used for contacting with the inner peripheral wall of the cable through hole.

The first air nozzle 13 is used for inflating the first airbag 11 and releasing the air of the first airbag 11, and the second air nozzle 23 is used for inflating the second airbag 21 and releasing the air of the second airbag 21. The first airbag 11 and the second airbag 21 are inflated.

Illustratively, referring to fig. 1 and 2, when the first airbag 11 is provided with a plurality of first air nozzles 13, the plurality of first air nozzles 13 are uniformly spaced on a first surface and a second surface of the first airbag 11, the first surface and the second surface are parallel, and the first surface and the second surface are respectively perpendicular to the length direction of the cable. When the second air bag 21 is provided with the plurality of second air nozzles 23, the plurality of second air nozzles 23 are uniformly arranged on the third surface and the fourth surface of the second air bag 21 at intervals, the third surface and the fourth surface are parallel, and the third surface and the fourth surface are respectively perpendicular to the length direction of the cable.

In the present embodiment, "a plurality" means 2 or more than 2. Preferably, the first and second surfaces of the first airbag 11 are provided with 4 first air nozzles 13, respectively, and the third and fourth surfaces of the second airbag 21 are provided with 4 second air nozzles 23, respectively.

A plurality of first air nozzles 13 are arranged on the first surface and the second surface of the first air bag 11, and a plurality of second air nozzles 23 are arranged on the third surface and the fourth surface of the second air bag 21 respectively, so that the position convenient for construction can be selected at will for inflation operation.

Illustratively, the material of the first air bag 11 and the second air bag 21 may be rubber. The first and

second air bags

11 and 21 are bonded to the connection ring 3, respectively.

Wherein, when the first air bag 11 is not inflated, i.e. not expanded, the telescopic inner shell 12 is in a normal state; when the first bladder 11 is inflated, i.e., expanded, the inner collapsible shell 12 is in a deflated state. When the second air bag 21 is not inflated, i.e. not expanded, the retractable housing 22 is in a normal state; when the second airbag 21 inflates, i.e., expands, the stretchable case 22 is in an expanded state.

Exemplarily, fig. 3 is a schematic structural diagram of the inner retractable shell 12 provided in the embodiment of the present invention in a normal state, and fig. 4 is a schematic structural diagram of the inner retractable shell 12 provided in the embodiment of the present invention in a contracted state. Referring to fig. 3 and 4, the inner telescoping shell 12 includes a protective inner ring 12a and an overlapping segment 12 b. The protective inner ring 12a is an open ring, a first open end of the protective inner ring 12a is fixed with a first end of the overlapping section 12b, a second end of the overlapping section 12b covers the opening of the protective inner ring 12a and is located on the outer circumferential wall of the protective inner ring 12a, and the overlapping section 12b is used for sliding along the outer circumferential wall of the protective inner ring 12a when the first airbag 11 expands and contracts the opening of the protective inner ring 12 a.

Fig. 5 is a schematic structural diagram of the retractable housing 22 in a normal state according to the embodiment of the present invention, and fig. 6 is a schematic structural diagram of the retractable housing 22 in an expanded state according to the embodiment of the present invention. Referring to fig. 5 and 6, the retractable housing 22 includes a protective outer ring 22a and an extension 22 b. The protective outer ring 22a is an unclosed ring, a first unclosed end of the protective outer ring 22a is fixed with a first end of a second extension 22b, a second end of the second extension 22b extends along the outer circumferential wall of the protective outer ring 22a, and the extension 22b is used for covering the second airbag 21 between the first unclosed end and the second unclosed end of the protective outer ring 22a when the second airbag 21 is inflated and expands the protective outer ring 22 a.

Illustratively, both the inner telescoping shell 12 and the outer telescoping shell 22 may be formed of a wear resistant material, such as plastic. Preferably, nylon is used for both inner and

outer telescoping shells

12, 22. The inner flexible shell 12 is adhesively secured to the first bladder 11 by a glue joint which may be located at the protective inner ring 12a opposite the overlapping section 12 b. Similarly, the retractable cover 22 and the second airbag 21 are adhesively secured by an adhesive point, which may be located on the protective outer ring 22a and opposite the extension 22 b.

The inner and outer side protective rings and the leather bag are bonded and fixed by a bonding point.

The diameter of the telescopic inner shell 12 can be reduced along with the inflation and expansion of the first air bag 11, so that the wall of the first air bag 11 is protected from being abraded or punctured by armor of copper wires or steel wires on the surface of the cable; the wall of the second air bag 21 is protected from being frayed or punctured by the expandable shell 22 which becomes larger in diameter as the second air bag 21 inflates.

Exemplarily, fig. 7 is a schematic structural diagram of a cable sealing device according to an embodiment of the present invention. Referring to fig. 7, the cable sealing device further includes a cable clamp 4, the cable clamp 4 is hinged to the connection ring 3 by a connection rod 5, and the cable clamp 4 is used for clamping the cable.

The cable sealing device is clamped on the cable through the cable clamp 4, and an installer can conveniently move the sealing device along the cable by holding the cable clamp 4 with hands, and can perform construction positioning. When the cable sealing device needs to be removed, the cable sealing device can be conveniently moved out of the cable through the cable clamp 4.

Exemplarily, fig. 8 is a schematic structural diagram of the cable clamp 4 according to an embodiment of the present invention. Referring to fig. 8, the cable clamp 4 includes a first member 41 and a second member 42, a middle portion of the first member 41 and a middle portion of the second member 42 are hinged, the first member 41 and the second member 42 are X-shaped, a first end of the first member 41 and a first end of the second member 42 are semi-annular, the first end of the first member 41 and the first end of the second member 42 enclose a clamping portion 43 for clamping the cable, and a second end of the first member 41 and a second end of the second member 42 together form a hand-holding portion 44 for clamping the cable.

The cable clamp 4 is simple in structure and convenient to operate.

Illustratively, referring to fig. 8, the second end of the first member 41 and the second end of the second member 42 are connected by a spring 45. This cable clamp 4 adopts spring 45 centre gripping mode, convenient operation.

Illustratively, referring to fig. 8, the first end of the first member 41 and the second end of the second member 42 are each provided with a plurality of rollers 46, the rollers 46 being adapted to slide along the cable under the force applied by the hand gripping portion 44 to change the position of the cable sealing device on the cable.

Illustratively, the total number of rollers 46 may be 6, with the rollers 46 being evenly arranged on the first end of the first member 41 and the second end of the second member 42. By providing the roller 46, the sealing device can be easily clamped on the cable and then quickly moved along the cable.

The installation process of the cable sealing device will be described with reference to fig. 9 and 10.

First, the cable is passed through the cable clamp 4 and the center of the first bladder 11 at a place where it is convenient to work, and the grip 44 is gripped to effect clamping of the sealing device on the cable. Since the cable clamp 4 is provided with rollers 46, the sealing device is manually pushed along the cable to the hole location on the wall. Fig. 9 is a schematic view of the cable sealing device and the hole before inflation according to the embodiment of the present invention. Before inflation, there is a large gap between the sealing device and the cable and the hole, respectively.

Then, the first air bag 11 and the second air bag 21 are respectively inflated through the first air nozzle 13 and the second air nozzle 23, and the first air bag 11 can only expand and deform inwards due to the fact that the connecting ring 3 is made of a solid material, so that a gap between the cable and the first air bag 11 is sealed; the second bladder 21 is expanded and deformed outwardly to seal the gap between the cable and the wall of the hole. Fig. 10 is a schematic view of the cable sealing device and the hole after inflation according to the embodiment of the present invention. After inflation, the gaps between the sealing means and the cables and the holes, respectively, are filled.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A cable sealing device, characterized in that it comprises: the cable connector comprises an expandable inner ring mechanism (1), an expandable outer ring mechanism (2) and a connecting ring (3), wherein the expandable inner ring mechanism (1), the expandable outer ring mechanism (2) and the connecting ring (3) are concentric, the outer peripheral wall of the expandable inner ring mechanism (1) is in sealing connection with the inner peripheral wall of the connecting ring (3), the inner peripheral wall of the expandable outer ring mechanism (2) is in sealing connection with the outer peripheral wall of the connecting ring (3), the expandable inner ring mechanism (1) is used for being tightly hooped on a cable, and the expandable outer ring mechanism (2) is used for being tightly propped against the inner peripheral wall of a cable through hole.

2. The cable sealing device according to claim 1,

the expandable inner ring mechanism (1) comprises a first air bag (11) and a telescopic inner shell (12), at least one first air nozzle (13) is arranged on the first air bag (11), the telescopic inner shell (12) covers the inner wall of the first air bag (11) and is used for contacting with the outer peripheral wall of the cable,

expandable outer ring mechanism (2) includes second gasbag (21) and scalable shell (22), be equipped with at least one second air cock (23) on second gasbag (21), scalable shell (22) cover in the outer wall of second gasbag (21) and be used for with the fenestrate interior perisporium contact of cable.

3. The cable sealing device according to claim 2,

when the first air bag (11) is provided with a plurality of first air nozzles (13), the first air nozzles (13) are uniformly arranged on a first surface and a second surface of the first air bag (11) at intervals, the first surface and the second surface are parallel, and the first surface and the second surface are respectively vertical to the length direction of the cable,

when be equipped with on second gasbag (21) a plurality ofly when second air cock (23), it is a plurality of even interval arrangement of second air cock (23) is in the third surface and the fourth surface of second gasbag (21), the third surface with the fourth surface is parallel, just the third surface with the fourth surface respectively with the length direction of cable is perpendicular.

4. The cable sealing device according to claim 2, wherein the inner telescopic shell (12) comprises a protective inner ring (12a) and an overlapping section (12b), the protective inner ring (12a) being a split ring, a first open end of the protective inner ring (12a) being fixed to a first end of the overlapping section (12b), a second end of the overlapping section (12b) covering the opening of the protective inner ring (12a) and being located at the outer peripheral wall of the protective inner ring (12a), the overlapping section (12b) being adapted to slide along the outer peripheral wall of the protective inner ring (12a) when the first balloon (11) expands and contracts the opening of the protective inner ring (12 a).

5. The cable sealing device according to claim 2, wherein the retractable casing (22) comprises a protective outer ring (22a) and an extension section (22b), the protective outer ring (22a) being an unclosed ring, a first unclosed end of the protective outer ring (22a) being fixed with a first end of the extension section (22b), a second end of the extension section (22b) extending along the outer circumferential wall of the protective outer ring (22a), the extension section (22b) being adapted to cover the second balloon (21) between the first and second unclosed ends of the protective outer ring (22a) when the second balloon (21) is inflated and expanding the protective outer ring (22 a).

6. The cable sealing device according to claim 1, further comprising a cable clamp (4), the cable clamp (4) being hinged to the connection ring (3) by a connection rod (5), the cable clamp (4) being adapted to clamp the cable.

7. The cable sealing device according to claim 6, characterized in that the cable clamp (4) comprises a first part (41) and a second part (42), the middle of the first part (41) and the middle of the second part (42) are hinged, the first part (41) and the second part (42) are X-shaped, the first end of the first part (41) and the first end of the second part (42) are each semi-annular, the first end of the first part (41) and the first end of the second part (42) enclose a grip portion (43) for gripping the cable, and the second end of the first part (41) and the second end of the second part (42) together form a hand grip portion (44) for gripping the cable.

8. Cable sealing device according to claim 7, characterized in that the connection between the second end of the first part (41) and the second end of the second part (42) is via a spring (45).

9. The cable sealing device according to claim 7, wherein the first end of the first part (41) and the first end of the second part (42) are each provided with a plurality of rollers (46), the rollers (46) being adapted to slide along the cable under the force applied by the hand grip (44) to change the position of the cable sealing device on the cable.

10. Cable sealing device according to any one of claims 1-9, characterized in that the connecting ring (3) is made of plastic.