CN214850248U

CN214850248U - High-strength cable protection pipe

Info

Publication number: CN214850248U
Application number: CN202121422051.5U
Authority: CN
Inventors: 陈小红; 刘瑶; 朱进
Original assignee: Jiangsu Mayuan Electric Power Technology Co ltd
Current assignee: Jiangsu Mayuan Electric Power Technology Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-11-23
Anticipated expiration: 2031-06-24

Abstract

The utility model relates to a cable corollary equipment's field discloses a high strength cable protection pipe, and it includes a plurality of interior bodys that outer body, head and the tail arranged in proper order and locates the elasticity packing ring between two adjacent interior bodys, outer body overlaps simultaneously and establishes in a plurality of interior bodys outsides, and with interior body cooperation of sliding, interior body cover is established in the cable outside, the elasticity packing ring passes through connecting piece and two adjacent interior body couplings. The elastic gasket limits deformation of the inner pipe body, and reduces the possibility of breakage of the inner pipe body due to excessive thermal expansion.

Description

High-strength cable protection pipe

Technical Field

The application relates to the field of cable corollary equipment, in particular to a high-strength cable protection pipe.

Background

The power grid is one of important infrastructure, in the process of building the power grid, a large number of cables need to be laid, and the cables in the market generally have the defect of easy breakage, so that a cable protection pipe needs to be arranged on the outer side of each cable.

Chinese patent with publication number CN211655629U discloses a high-strength cable protection tube, including the perfluororubber layer, a plurality of draw-in grooves have been seted up to the internal surface equidistance on perfluororubber layer, and the internal surface joint of draw-in groove has the ball, and there is the rock wool layer in the outside on perfluororubber layer through PP glue connection, and the inner chamber on rock wool layer is provided with the metal mesh layer, and the outside on rock wool layer is scribbled and is equipped with chlorosulfonated polyethylene coating, and the outside of chlorosulfonated polyethylene coating is scribbled and is equipped with the alumina coating. When the cable is installed, rolling friction is generated between the ball and the cable so as to reduce the abrasion of the cable; in addition, the fire resistance of the cable is increased by the rock wool layer, the cable is not easy to catch fire, the corrosion resistance of the cable is increased by the chlorosulfonated polyethylene coating, the wear resistance of the cable is increased by the aluminum oxide coating, and the strength of the cable is increased by the metal net layer.

In view of the above-mentioned related art, the inventor believes that heat is generated when the cable is operated, and the materials of the layers on the outer side of the cable expand after absorbing the heat, and when the expansion degree is too large, the materials of the layers on the outer side of the cable are easily broken.

SUMMERY OF THE UTILITY MODEL

In the related art, after absorbing the heat emitted by the cable, each layer of material on the outer side of the cable is easy to break due to expansion, and in order to overcome the defect, the application provides a high-strength cable protection pipe.

The application provides a high strength cable protection pipe adopts following technical scheme to obtain:

the utility model provides a high strength cable protection pipe, includes a plurality of interior bodys that outer body, head and the tail arranged in proper order and locates the elastic gasket between two adjacent interior bodys, outer body cover is established in a plurality of interior bodys outsides simultaneously, and with interior body cooperation of sliding, interior body is used for the cover to establish in the cable outside, elastic gasket passes through connecting piece and two adjacent interior body coupling.

Through the technical scheme, when the cable generates heat, the inner pipe body absorbs the heat and generates the expansion trend, at the moment, the outer pipe body restrains the inner pipe body and limits the deformation trend of the inner pipe body along the radial direction. After the tendency of deformation along the radial direction is limited, the deformation tendency of the inner pipe body is concentrated on the axial direction, and at the moment, because the expansion degrees of the inner pipe body and the outer pipe body are inconsistent, relative sliding between the inner pipe body and the outer pipe body occurs until the inner pipe body collides with the elastic gasket. After that, the elastic gasket limits the deformation of the inner pipe body along the axial direction by means of the elasticity of the elastic gasket, so that the inner pipe body is difficult to expand further, and the possibility of fracture of the inner pipe body caused by over expansion is reduced.

Preferably: the connecting piece comprises a connecting ring and a steel strand, the connecting ring is fixedly connected to the end face of the elastic washer, one end of the steel strand is connected with the connecting ring, and the other end of the steel strand is connected with the inner pipe body.

Through the technical scheme, when the temperature difference between day and night is large, the inner pipe body shrinks due to temperature reduction at night, the inner pipe body exerts pulling force on the inner pipe body through the steel strand and the connecting ring, and the elastic gasket pulls the inner pipe body through the elastic force of the elastic gasket, so that the shrinkage of the inner pipe body is limited, and the possibility of damage of the inner pipe body due to the overlarge shrinkage degree is reduced. When the inner pipe body is pulled, the connecting ring disperses the tensile force of the steel strand to the end face of the elastic washer, so that the stress uniformity of the elastic washer is improved.

Preferably: an annular cavity is formed in the inner tube body, a metal net is fixedly arranged in the annular cavity, and reinforcing microbeads are fixedly connected to the nodes of the metal net.

Through the technical scheme, when the cable is subjected to external tensile force, the metal mesh and the cable bear the tensile force together, and meanwhile, the reinforcing microspheres reinforce the joints of the metal mesh, so that the tensile strength of the metal mesh is improved, and the possibility of damage of the cable after being pulled is reduced.

Preferably: the connecting piece still includes the reinforcement piece, the reinforcement piece is buried underground in the inner tube body, the inner tube body is worn to establish by the one end of steel strand wires away from the go-between, steel strand wires and reinforcement piece fixed connection.

Through above-mentioned technical scheme, when the body when the elastic washer passes through steel strand wires and pulls interior body, the reinforcement piece carries out the anchor to the steel strand wires to reduce the possibility that the steel strand wires slipped from interior body, improved the stability of steel strand wires.

Preferably: the fire retardant pipe comprises an outer pipe body and is characterized in that a cavity for storing a fire retardant is formed in the outer pipe body, a through hole is formed in the wall of the cavity, facing one side of the inner pipe body, of the cavity, and glass beads for plugging the through hole are arranged at the through hole.

Through above-mentioned technical scheme, when the cable is on fire, the glass pearl is heated expansion and cracked, and the fire retardant of storing in the cavity leaves the cavity through the through-hole to the department of putting out a fire of cable, thereby reduced the risk that the cable scope of putting on fire enlarges.

Preferably: and an air chamber for storing air is formed in the glass bead.

Through above-mentioned technical scheme, when the glass pearl was heated, the gas in the gas chamber takes place the inflation, makes the atmospheric pressure increase in the gas chamber to the cracked effect of glass pearl has been played with higher speed. Further, by the provision of the air chamber, the occupied space of the glass bead fragments is reduced, thereby reducing the possibility that the through-holes are clogged with the glass bead fragments.

Preferably: still include radiator unit, radiator unit includes heat conduction post and radiating ring, the ring channel has been seted up along the periphery on the lateral wall of outer body, the radiating ring is located in the ring channel, the one end of heat conduction post and the inside wall fixed connection of radiating ring, the other end is worn to establish the cell wall of ring channel, and with outer body fixed connection.

Through above-mentioned technical scheme, when the cable generates heat, the heat conduction post absorbs the heat of cable through interior body, and rethread radiating ring is with heat transfer to external environment to realized the cooling to cable and interior body, reduced interior body and heated the fracture after the inflation possibility that takes place.

Preferably: the heat dissipation assembly further comprises a plurality of annular cooling fins, and the annular cooling fins are fixedly connected with the outer side wall of the heat dissipation ring.

Through the technical scheme, the area of the air in the external environment for absorbing heat is increased by the annular radiating fins, so that the radiating efficiency of the radiating ring is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the cable generates heat, the inner pipe body absorbs the heat of the cable, the outer pipe body limits the radial deformation of the inner pipe body at the moment, and the rubber gasket limits the axial deformation of the inner pipe body, so that the inner pipe body is not easy to expand, and the possibility of breakage of the inner pipe body is reduced;

2. when the cable is on fire, the glass beads are broken, the flame retardant stored in the cavity leaves the cavity through the through hole, and the cable is extinguished, so that the possibility of expanding the combustion range of the cable is reduced.

Drawings

Fig. 1 is a schematic view of an overall structure of a high-strength cable protection pipe according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram for showing an inner tube body according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram for showing a connecting piece according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram for showing a cavity according to an embodiment of the present application.

Fig. 5 is an enlarged view of a portion a in fig. 4.

FIG. 6 is a schematic structural diagram for showing a gas chamber according to an embodiment of the present application.

Description of reference numerals:

1. an outer tubular body; 2. an inner tube body; 3. an elastic washer; 4. a heat dissipating component; 41. a heat-conducting column; 42. a heat dissipation ring; 43. an annular heat sink; 5. a connecting member; 51. a connecting ring; 52. steel strand wires; 53. a reinforcing sheet; 6. a metal mesh; 7. reinforcing micro-beads; 8. a cavity; 9. a through hole; 10. glass beads; 11. an air chamber; 12. an annular cavity; 13. an annular groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses high strength cable protection pipe. Referring to fig. 1 and 2, the high-strength cable protection tube includes an outer tube 1, an inner tube 2, an elastic washer 3 and a heat dissipation assembly 4, the number of the inner tubes 2 is three, the three inner tubes 2 are all sleeved on the outer side of the cable, and the three inner tubes 2 are arranged at equal intervals. The outer pipe body 1 is simultaneously sleeved on the outer sides of the three inner pipe bodies 2, the inner side wall of the outer pipe body 1 is attached to the outer side wall of the inner pipe bodies 2, and the outer pipe body 1 is simultaneously matched with the inner pipe bodies 2 in a sliding mode. The elastic gaskets 3 are arranged in a plurality of numbers, one elastic gasket 3 is arranged between every two adjacent inner pipes 2, and the elastic gaskets 3 are connected with the adjacent inner pipes 2 through connecting pieces 5.

Referring to fig. 1 and 2, when the cable generates heat, the inner tube 2 first absorbs the heat of the cable and tends to expand, then the outer tube 1 limits the radial deformation of the inner tube 2, the rubber gasket limits the axial deformation of the outer tube 1, and the heat dissipation assembly 4 dissipates heat from the cable and the inner tube 2, thereby reducing the possibility of the inner tube 2 breaking due to thermal expansion.

Referring to fig. 2 and 3, the connecting member 5 includes a connecting ring 51, a plurality of steel strands 52 and a plurality of reinforcing plates 53, the connecting ring 51, the plurality of steel strands 52 and the plurality of reinforcing plates 53 are all provided, two end surfaces of the elastic washer 3 are fixedly connected with one connecting ring 51, and the connecting ring 51, the inner tube 2 and the elastic washer 3 are coaxially arranged; one end of each steel strand 52 is fixedly connected with the connecting ring 51, the other end of each steel strand penetrates through the inner tube body 2 and is fixedly connected with the inner tube body 2, the reinforcing sheet 53 is embedded in the inner tube body 2, one end, far away from the elastic gasket 3, of each steel strand 52 penetrates through the inner tube body 2, and one steel strand 52 is fixedly connected with the three reinforcing sheets 53. An annular cavity 12 is formed in the inner pipe body 2, a metal net 6 is arranged in the annular cavity 12, the metal net 6 is fixedly connected with the cavity wall of the annular cavity 12, and reinforcing microbeads 7 are welded at the joint of the metal net 6. When the cable is pulled, the reinforcing beads 7 reinforce the joints of the metal mesh 6, and the metal mesh 6, the steel strands 52 and the cable bear the pulling force together, so that the tensile property of the cable is improved.

Referring to fig. 1 and 3, when the cable is heated, the inner tube 2 absorbs heat and tends to expand, while the outer tube 1 limits the radial deformation of the inner tube 2; when the inner pipe body 2 deforms along the axial direction, the inner pipe body 2 and the outer pipe body 1 slide relatively until the inner pipe bodies 2 on two sides of the elastic gasket 3 are all abutted to the elastic gasket 3 through the connecting ring 51, then the elastic gasket 3 exerts a reaction force on the inner pipe body 2 by virtue of the elasticity of the elastic gasket 3, and limits the deformation of the inner pipe body 2 along the axial direction, so that the possibility that the inner pipe body 2 is broken due to excessive thermal expansion is reduced. When the diurnal temperature difference is large, the inner tube body 2 loses more heat than absorbs at night and tends to shrink. When the inner pipe body 2 contracts, the steel strand 52 is driven to move until the steel strand 52 is straightened. At this time, the elastic washer 3 pulls the inner tube body 2 through the connection ring 51 and the steel strands 52, and the reinforcing pieces 53 anchor the steel strands 52, thereby restricting the contraction of the inner tube body 2.

Referring to fig. 1 and 4, the heat dissipating assembly 4 includes a plurality of heat conducting pillars 41, a plurality of heat dissipating rings 42, and a plurality of annular heat dissipating fins 43, where the heat conducting pillars 41 and the heat dissipating rings 42 are provided. Four annular grooves 13 are formed in the outer side wall of the outer pipe body 1 along the periphery, the annular grooves 13 are arranged at equal intervals along the axial direction of the outer pipe body 1, and the heat dissipation rings 42 correspond to the annular grooves 13 one to one and are arranged in the annular grooves 13. The annular cooling fins 43 are fixedly connected to the outer side wall of the cooling ring 42, and one cooling ring 42 corresponds to four annular cooling fins 43; the heat dissipation ring 42 increases the heat dissipation area and improves the heat dissipation efficiency. One end of each heat-conducting column 41 is fixedly connected with the inner side wall of the heat-radiating ring 42, the other end of each heat-conducting column penetrates through the side wall of the outer pipe body 1 and is attached to the outer side wall of the inner pipe body 2, one heat-radiating ring 42 corresponds to the four heat-conducting columns 41, and the heat-conducting columns 41 are fixedly connected with the outer pipe body 1.

Referring to fig. 1 and 4, when the cable generates heat, the heat-conducting columns 41 absorb heat at the gap between two adjacent inner tubes 2, and then transfer the heat to the heat-dissipating ring 42, and the heat-dissipating ring 42 and the annular heat-dissipating fins 43 together transfer the heat to the outside air, so that the temperature of the cable and the inner tubes 2 is reduced, and the possibility of damage to the inner tubes 2 due to excessive thermal expansion is reduced.

Referring to fig. 4 and 5, a cavity 8 is formed in the outer tube 1 between two adjacent heat dissipation rings 42, and a fire retardant, which may be a liquid fire retardant, is filled in the cavity 8. A through hole 9 is formed in the cavity wall of one side, facing the inner tube body 2, of the cavity 8, a glass bead 10 is fixedly connected to the hole wall of the through hole 9, and the through hole 9 is blocked by the glass bead 10.

Referring to fig. 5 and 6, an air chamber 11 is formed in the glass bead 10, and air is stored in the air chamber 11. When the cable fires, the air in the air chamber 11 and the glass beads 10 expand simultaneously until the glass beads 10 are broken and the through holes 9 are not blocked, then the fire retardant flows out of the cavity 8 through the through holes 9 and extinguishes the fire-firing part of the cable, and therefore the possibility of expanding the combustion area of the cable is reduced.

The implementation principle of the high-strength cable protection pipe in the embodiment of the application is as follows: when the cable generates heat, outer body 1 limits the radial deformation of inner body 2, and elastic gasket 3 limits the axial deformation of inner body 2, and radiator unit 4 cools down cable and inner body 2 simultaneously to the cracked possibility of inner body 2 because of being heated the excessive expansion has been reduced. When the cable burns, the fire retardant stored in the cavity 8 extinguishes the burning part of the cable, so that the possibility that the burning range of the cable is continuously expanded is reduced.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. A high strength cable protection tube which characterized in that: including a plurality of interior body (2) that outer body (1), head and the tail arranged in proper order and locate elastic gasket (3) between two adjacent interior body (2), outer body (1) cover is established in a plurality of interior body (2) outsides simultaneously, and with interior body (2) cooperation of sliding, interior body (2) are used for the cover to establish in the cable outside, elastic gasket (3) are connected with two adjacent interior body (2) through connecting piece (5).

2. The high-strength cable protection tube according to claim 1, wherein: the connecting piece (5) comprises a connecting ring (51) and a steel strand (52), the connecting ring (51) is fixedly connected to the end face of the elastic gasket (3), one end of the steel strand (52) is connected with the connecting ring (51), and the other end of the steel strand is connected with the inner pipe body (2).

3. The high-strength cable protection tube according to claim 2, wherein: an annular cavity (12) is formed in the inner tube body (2), a metal net (6) is fixedly arranged in the annular cavity (12), and reinforcing microbeads (7) are fixedly connected to the nodes of the metal net (6).

4. The high-strength cable protection tube according to claim 2, wherein: the connecting piece (5) further comprises a reinforcing sheet (53), the reinforcing sheet (53) is embedded in the inner pipe body (2), one end, far away from the connecting ring (51), of the steel strand (52) penetrates through the inner pipe body (2), and the steel strand (52) is fixedly connected with the reinforcing sheet (53).

5. The high-strength cable protection tube according to claim 1, wherein: a cavity (8) for storing a flame retardant is formed in the outer tube body (1), a through hole (9) is formed in the cavity wall, facing one side of the inner tube body (2), of the cavity (8), and glass beads (10) for plugging the through hole (9) are arranged at the through hole (9).

6. The high-strength cable protection tube according to claim 5, wherein: an air chamber (11) for storing air is arranged in the glass bead (10).

7. The high-strength cable protection tube according to claim 1, wherein: still include radiator unit (4), radiator unit (4) are including heat conduction post (41) and radiating ring (42), ring channel (13) have been seted up along the periphery on the lateral wall of outer body (1), in ring channel (13) were located in radiating ring (42), the one end of heat conduction post (41) and the inside wall fixed connection of radiating ring (42), the other end is worn to establish the cell wall of ring channel (13), and with outer body (1) fixed connection.

8. The high-strength cable protection tube according to claim 7, wherein: the heat dissipation assembly (4) further comprises a plurality of annular cooling fins (43), and the annular cooling fins (43) are fixedly connected with the outer side wall of the heat dissipation ring (42).