CN216450447U - Insulating aerial [ insulated ] cable - Google Patents

Abstract

The utility model relates to the technical field of cable processing, specifically disclose an insulating aerial [ insulated ] cable, including the steel core supporting body, the outer peripheral face of steel core supporting body is provided with a plurality of cable aluminium cores, be provided with the packing supporter between two adjacent cable aluminium cores respectively, the outside cladding in proper order of a plurality of cable aluminium cores has first around the covering, the waterproof layer, first buffer layer, the steel band twists the layer, the second buffer layer, there is not steamed low cigarette fire-retardant layer, resistant insulating layer, the packing supporter is including supporting the body, set firmly the first body of touching near steel core supporting body one end at the support body, set firmly the second body of touching near first covering one end at the support body, the both sides of supporting the body set firmly respectively with the third body of touching inconsistent with two adjacent cable aluminium cores. The aerial cable has good insulativity, compressive strength and tensile strength, and improves the stability and safety of the aerial cable.

Description

Insulating aerial [ insulated ] cable

Technical Field

The application relates to the technical field of cable processing, in particular to an insulated overhead cable.

Background

The overhead cable is an overhead conductor with an insulating layer and a protective sheath, is a special cable manufactured by adopting a production process similar to a crosslinked cable, is a new power transmission mode between the overhead conductor and an underground cable, and has the advantages of high power supply reliability, good power supply safety, convenience in erection and maintenance, reasonable economy and the like.

The aerial [ insulated ] cable of prior art generally includes the carrier wire, and the even cladding of the outer peripheral face of carrier wire has a plurality of aluminium cores, and the outer peripheral face of a plurality of aluminium cores has around covering, shielding layer, insulating layer in proper order, and aerial [ insulated ] cable has good insulating nature, temperature toleration. However, in practical applications, the applicant finds that the overhead cable is easy to bend and deform under pressure, and therefore, the research on an insulated overhead cable with higher compressive strength is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to increase aerial [ insulated ] cable's compressive strength, improve the stability that aerial [ insulated ] cable used, this application provides an insulating aerial [ insulated ] cable, adopts following technical scheme:

an insulated overhead cable comprises a steel core supporting body, wherein a plurality of cable aluminum cores with round cross sections are uniformly arranged on the outer peripheral surface of the steel core supporting body along the circumferential direction of the steel core supporting body, a filling supporting body is respectively arranged between every two adjacent cable aluminum cores, the outer sides of the plurality of cable aluminum cores are sequentially coated with a first wrapping layer, a waterproof layer, a first buffer layer, a steel strip twisting layer, a second buffer layer, a halogen-free low-smoke flame-retardant layer and a weather-resistant insulating layer, the first wrapping layer surrounds a plurality of cable aluminum cores and enables the cable aluminum cores, the filling supporting body and the steel core supporting body to be tightly abutted together, the filling support body comprises a support body positioned between the steel core bearing body and the first wrapping layer, a first contact body fixedly arranged at one end of the support body close to the steel core bearing body, and a second contact body fixedly arranged at one end of the support body close to the first wrapping layer, and third abutting bodies which are abutted against the adjacent two cable aluminum cores are fixedly arranged on two sides of the supporting body respectively.

Through adopting above-mentioned technical scheme, the overhead cable of this application sets up the steel band stranding layer between first buffer layer and second buffer layer, has increased overhead cable's compressive strength. And set up the packing supporter between first around covering and steel core supporting body, first touch body and steel core supporting body are inconsistent, and the second touch body is inconsistent with first around the covering, and first touch body and second touch body play the supporting role to first around the covering, and then play the effect of support to waterproof layer, first buffer layer, steel band stranding layer, increase aerial cable's compressive strength, improve the stability and the security that aerial cable used. Simultaneously, still be provided with the third body that supports on the support body, third body and the cable aluminium core of supporting are inconsistent, realize the joint of cable aluminium core, reduce the condition that the removal appears in cable aluminium core between steel core supporting body, first winding covering, also can improve the stability that aerial [ insulated ] cable used.

Optionally, a filling cylinder is disposed between the second contact body and the third contact body.

Through adopting above-mentioned technical scheme, fill the cylinder and be located first around between covering and the steel core supporting body, increased aerial [ insulated ] cable's closely knit nature, improve the stability that aerial [ insulated ] cable used.

Optionally, a plurality of circular holes are evenly formed in the first buffer layer along the circumferential direction of the first buffer layer, and reinforcing steel cores matched with the circular holes are respectively arranged in the circular holes.

Through adopting above-mentioned technical scheme, first buffer layer plays the effect of buffering to cable aluminium core, strengthens the steel core and has improved the mechanical strength of first buffer layer, through first buffer layer and the cooperation each other of strengthening between the steel core, has not only played the effect of buffering, increases aerial cable's tensile strength moreover, has improved stability and the security that aerial cable used.

Optionally, the second buffer layer is provided with a circle of S-shaped holes which are sequentially communicated end to end along the circumferential direction of the second buffer layer, and reinforcing steel plates matched with the S-shaped holes are arranged in the S-shaped holes.

Through adopting above-mentioned technical scheme, the second buffer layer plays the effect of buffering to cable aluminium core, and the reinforcing steel plate has improved the mechanical strength of second buffer layer, through mutually supporting between second buffer layer and the reinforcing steel plate, increases aerial [ insulated ] cable's tensile strength, has further improved stability and the security that aerial [ insulated ] cable used.

Optionally, the steel band stranding layer comprises a plurality of steel band inserting layers which are inserted together, the steel band inserting layers are uniformly arranged along the circumferential direction of the first buffer layer, each steel band inserting layer comprises a steel band body with a sector ring-shaped cross section and a steel band inserting body which is fixedly arranged in the circumferential direction of the steel band body and is in a sector ring shape, and an inserting groove matched with the steel band inserting body is formed in one end, far away from the steel band inserting body, of the steel band body.

Through adopting above-mentioned technical scheme, peg graft between two adjacent steel band grafting layers, increased the area of contact on two adjacent steel band grafting layers, reduced the condition that breaks away from, the delaminating appears between steel band grafting layer and the first buffer layer, improved the stability that aerial [ insulated ] cable used.

Optionally, the steel strip stranding layer is at least two layers.

Through adopting above-mentioned technical scheme, improve aerial cable's mechanical strength.

Optionally, the steel belt splicing layers of the two adjacent steel belt stranding layers are arranged in a staggered manner.

Through adopting above-mentioned technical scheme, stability and security that improve aerial [ insulated ] cable used.

Optionally, the steel core carrier includes a steel core, and an outer circumferential surface of the steel core is sequentially coated with a first insulating layer and a first shielding layer.

Through adopting above-mentioned technical scheme, the steel core has improved aerial [ insulated ] cable's mechanical strength, and first insulating layer plays insulating effect, and first shielding layer plays shielded effect, through mutually supporting between each layer, has improved stability and the security that the steel core supporting body used.

Optionally, the cable aluminum core includes an aluminum core base body, and the outer peripheral surface of the aluminum core base body is sequentially wrapped with a second wrapping layer, a second insulating layer, a second shielding layer and a glass fiber reinforcing layer.

Through adopting above-mentioned technical scheme, the second insulating layer plays insulating effect, and the second shielding layer plays shielded effect, and the glass fiber reinforcement layer has increased the mechanical strength of cable aluminium core, through mutually supporting between each layer, has improved the insulating nature of cable aluminium core, corrosion resistance, mechanical strength.

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

1. the utility model provides an aerial cable, set up the steel band stranding layer between first buffer layer and second buffer layer, aerial cable's compressive strength has been increased, and set up the packing supporter around firstly between covering and the steel core supporting body, first body and the steel core supporting body are inconsistent to the touch, the second body and first the covering are inconsistent around, the third body and the aluminium core of cable are inconsistent to the touch, first body and the second body of touching play the supporting role to first around the covering, and then to the waterproof layer, first buffer layer, the effect that the steel band stranding layer played the support, further increase aerial cable's compressive strength, the stability that improves aerial cable and use.

2. Through the first buffer layer with strengthen mutually supporting between the steel core, through mutually supporting between second buffer layer and the reinforcing steel plate, increase the mechanical strength of first buffer layer, second buffer layer, increase aerial [ insulated ] cable's tensile strength moreover, further improved stability and the security that aerial [ insulated ] cable used.

3. The steel core supporting body comprises a steel core, a first insulating layer and a first shielding layer, and the stability and the safety of the use of the steel core supporting body are improved through the mutual matching of all the layers. The cable aluminum core comprises an aluminum core base body, a second wrapping layer, a second insulating layer, a second shielding layer and a glass fiber reinforcing layer, and through mutual matching of the layers, the insulating property, the corrosion resistance and the mechanical strength of the cable aluminum core are improved.

Drawings

Fig. 1 is a schematic diagram of an embodiment.

Fig. 2 is a schematic view for illustrating an aluminum core of the cable.

Description of reference numerals: 1. a steel core carrier; 11. a steel core; 12. a first insulating layer; 13. a first shielding layer; 2. an aluminum core of the cable; 21. an aluminum core substrate; 22. a second lapping layer; 23. a second insulating layer; 24. a second shielding layer; 25. a glass fiber reinforced layer; 31. filling a support body; 311. a support body; 312. a first contact body; 313. a second contact body; 314. a third contact body; 32. filling the cylinder; 4. a first lapping layer; 5. a waterproof layer; 6. a first buffer layer; 61. reinforcing the steel core; 7. stranding a steel strip into a layer; 71. a steel strip splicing layer; 711. a steel strip body; 712. a steel band insert; 8. a second buffer layer; 81. reinforcing a steel plate; 91. a halogen-free low-smoke flame-retardant layer; 92. and a weather-resistant insulating layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses insulating aerial [ insulated ] cable. Referring to fig. 1 and 2, including a steel core supporting body 1, a plurality of cable aluminum cores 2 are uniformly arranged on the outer circumferential surface of the steel core supporting body 1 along the circumferential direction thereof, the number of the cable aluminum cores 2 in this embodiment is five, the cross section of each cable aluminum core 2 is circular, and a filling support body 31 is respectively arranged between two adjacent cable aluminum cores 2, that is, the number of the filling support bodies 31 in this embodiment is five, five cable aluminum cores 2 and five filling support bodies 31 form a circle around the steel core supporting body 1, the outer sides of five cable aluminum cores 2 are wrapped with a first wrapping layer 4, that is, five cable aluminum cores 2 are located in the first wrapping layer 4, and the first wrapping layer 4 surrounds the five cable aluminum cores 2 and enables the five cable aluminum cores 2, the five filling support bodies 31 and the steel core supporting body 1 to be tightly abutted together. The first outer peripheral face of wrapping 4 has waterproof layer 5, first buffer layer 6, steel band hank system layer 7, second buffer layer 8, does not have steamed low cigarette flame retardant coating 91, resistant insulating layer 92 of waiting in proper order.

Referring to fig. 1 and 2, the steel core carrier 1 includes a steel core 11, and the steel core 11 improves the strength of the overhead cable, thereby improving the practicality and the life thereof. The outer peripheral surface of the steel core 11 is coated with the first insulating layer 12, the first insulating layer 12 is made of polyethylene through crosslinking, the strength and the heat aging resistance of the first insulating layer 12 are improved, and meanwhile, the steel core has the advantages of high temperature resistance, light weight and convenience in use, so that the use stability and the service life of the overhead cable are improved. The outer peripheral surface of the first insulating layer 12 is coated with a first shield layer 13. The first shielding layer 13 is made of polyolefin and carbon black in a mixed mode, the adding amount of the carbon black is 3% of that of the polyolefin, the first shielding layer 13 plays a role in insulation shielding, and the using stability and safety of the steel core bearing body 1 are improved.

Referring to fig. 1 and 2, the cable aluminum core 2 comprises an aluminum core base 21, the aluminum core base 21 is formed by cabling a plurality of aluminum wires, and the aluminum wires are adopted to reduce the weight of the overhead cable and improve the use stability of the overhead cable. The outer peripheral surface of aluminium core base member 21 is wrapped in proper order has second around covering 22, second insulating layer 23, second shielding layer 24, glass fiber reinforcement layer 25.

Referring to fig. 1 and 2, the second wrapping layer 22 is made of ceramic silicon rubber, and the second wrapping layer 22 improves the stability of the overhead cable. The second insulating layer 23 is made of cross-linked polyethylene. The second shielding layer 24 is made of polyolefin and carbon black in a mixed mode, the adding amount of the carbon black is 3% of that of the polyolefin, and the second insulating layer 23 is made of the same material as the first insulating layer 12, the second shielding layer 24 and the first shielding layer 13, so that the processing and the production are more convenient. The glass fiber reinforced layer 25 is made of glass fiber, and the glass fiber is an inorganic non-metallic material and has the advantages of good insulation, good corrosion resistance and high mechanical strength, so that the strength of the cable aluminum core 2 is improved, and the waterproofness and the corrosion resistance of the cable aluminum core 2 are improved.

Referring to fig. 1 and 2, the packing support 31 is machined from a steel plate. The filling support 31 comprises a support body 311 located between two adjacent cable aluminium cores 2. One end of the support body 311 close to the steel core carrier 1 is fixedly provided with a first contact body 312 which is in contact with the steel core carrier 1, and the first contact body 312 is in an arc shape which is matched with the steel core carrier 1. One end of the supporting body 311, which is far away from the steel core bearing body 1, is fixedly provided with a second contact body 313 which is in contact with the first wrapping layer 4, and the second contact body 313 is in an arc shape which is matched with the first wrapping layer 4. The two sides of the supporting body 311 are respectively and fixedly provided with a third contact body 314 which is contacted with the two adjacent cable aluminum cores 2, and the end surface of the third contact body 314 far away from the supporting body 311 is in an arc shape matched with the cable aluminum cores 2. First contact body 311 and second contact body 313 play the effect of support to first around covering 4, and then play the supporting role to waterproof layer 5, first buffer layer 6, steel band stranding layer 7, increase aerial [ insulated ] cable's compressive strength, improve the stability that aerial [ insulated ] cable used. A filling cylinder 32 for enhancing the stability of the second contact body 313 and the third contact body 314 is arranged between the second contact body and the third contact body 314, the cross section of the filling cylinder 32 is circular, the diameter of the filling cylinder 32 is smaller than that of the cable aluminum core 2, and the filling cylinder 32 is made of polyethylene through crosslinking.

Referring to fig. 1 and 2, the first wrapping layer 4 is made of ceramic silicon rubber, and the materials of the first wrapping layer 4 and the second wrapping layer 22 are the same, so that the processing and the production are more convenient. The waterproof layer 5 is made of the combination of the ternary propylene rubber and the polyethylene rubber, and the waterproof effect of the overhead cable is improved. First buffer layer 6 is made by epoxy, first buffer layer 6's transversal ring shape of personally submitting, and a plurality of circular ports have evenly been seted up along its circumferential direction to first buffer layer 6, and all be provided with rather than the enhancement steel core 61 of looks adaptation in a plurality of circular ports, first buffer layer 6 plays the effect of buffering to cable aluminium core 2, it has improved first buffer layer 6's mechanical strength to strengthen steel core 61, through the first buffer layer 6 and the mutually supporting of strengthening between the steel core 61, the effect of buffering has not only been played, and the stability and the security that aerial [ insulated ] cable used have been improved.

Referring to fig. 1 and 2, the steel tape twisted layer 7 is at least two layers, and the steel tape twisted layer 7 is two layers in this embodiment. The cross section of the steel belt stranding layer 7 is circular ring-shaped. The steel strip twisting layer 7 comprises a plurality of steel strip inserting layers 71 which are inserted together, and the plurality of steel strip inserting layers 71 are uniformly arranged along the circumferential direction of the first buffer layer 6. The steel strip inserting layer 71 comprises a steel strip body 711, the cross section of the steel strip body 711 is in a sector ring shape, a steel strip inserting body 712 is fixedly arranged at one end of the steel strip body 711 in the circumferential direction, the cross section of the steel strip inserting body 712 is in a sector ring shape, the end face, far away from the steel strip body 711, of the steel strip inserting body 712 is arranged to be an arc face, and the bending direction of the arc face faces the steel strip body 711. One end of the steel band body 711 far away from the steel band insertion body 712 is provided with an insertion groove matched with the steel band insertion body 712. The steel belt splicing layers 71 of the two adjacent steel belt stranding layers 7 are arranged in a staggered mode. The steel strip stranded layer 7 further improves the compressive strength of the overhead cable, improves the stability and safety of the overhead cable and prolongs the service life of the overhead cable.

Referring to fig. 1 and 2, second buffer layer 8 is made by epoxy, the ring shape is personally submitted to second buffer layer 8' S transversal, and second buffer layer 8 sets up the S-shaped hole that the round end to end communicates in order along its circumferential direction, and the S-shaped downthehole reinforcing steel plate 81 that is provided with rather than the looks adaptation, second buffer layer 8 plays the effect of buffering to cable aluminium core 2, reinforcing steel plate 81 has improved the mechanical strength of second buffer layer 8, through the mutually supporting between second buffer layer 8 and the reinforcing steel plate 81, the stability and the security of overhead cable use have further been improved.

Referring to fig. 1 and 2, the halogen-free low-smoke flame retardant layer 91 is made of a combination of a halogen-free low-smoke flame retardant and polyvinyl chloride, and the addition amount of the halogen-free low-smoke flame retardant is 11% of that of the polyvinyl chloride, so that a good flame retardant effect is achieved, and the practicability of the flame retardant is improved. The weather-resistant insulating layer 92 is made of black weather-resistant overhead crosslinked polyethylene, so that the heat insulation effect is good, and the waterproof performance is good, so that the use stability of the overhead cable is improved.

The utility model provides an insulating aerial [ insulated ] cable through mutually supporting between each layer, has good insulating nature, corrosion resistance, fire resistance, compressive strength, tensile strength, improves stability and the security that aerial [ insulated ] cable used.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. An insulated overhead cable, characterized in that: including steel core supporting body (1), the outer peripheral face of steel core supporting body (1) evenly is provided with a plurality of transversal circular-form cable aluminium cores (2) of personally submitting along its circumference, adjacent two be provided with packing supporter (31) between cable aluminium core (2) respectively, it is a plurality of the outside of cable aluminium core (2) has wrapped in proper order and has first around covering (4), waterproof layer (5), first buffer layer (6), steel band stranding layer (7), second buffer layer (8), there is not steamed low cigarette flame retardant coating (91), resistant insulating layer (92), first around covering (4) around a plurality of cable aluminium cores (2) and make cable aluminium core (2), packing supporter (31), steel core supporting body (1) closely contradict together, packing supporter (31) are including being located support body (311) between steel core (1) and first around covering (4), support body (311) are in the same place, The cable comprises a first abutting body (312) fixedly arranged at one end, close to the steel core bearing body (1), of a support body (311), and a second abutting body (313) fixedly arranged at one end, close to the first wrapping layer (4), of the support body (311), wherein third abutting bodies (314) which are abutted against two adjacent cable aluminum cores (2) are fixedly arranged on two sides of the support body (311) respectively.

2. An insulated overhead cable as claimed in claim 1, wherein: a filling cylinder (32) is arranged between the second contact body (313) and the third contact body (314).

3. An insulated overhead cable as claimed in claim 1, wherein: a plurality of circular holes are uniformly formed in the first buffer layer (6) along the circumferential direction of the first buffer layer, and reinforcing steel cores (61) matched with the circular holes are respectively arranged in the circular holes.

4. An insulated overhead cable as claimed in claim 1, wherein: and a circle of S-shaped holes which are sequentially communicated end to end are formed in the second buffer layer (8) along the circumferential direction of the second buffer layer, and reinforcing steel plates (81) matched with the S-shaped holes are arranged in the S-shaped holes.

5. An insulated overhead cable as claimed in claim 1, wherein: steel band stranding layer (7) are including a plurality of steel band grafting layer (71) of pegging graft together, and are a plurality of steel band grafting layer (71) evenly sets up along first buffer layer (6) circumferential direction, steel band grafting layer (71) are including transversal personally submitting an annular steel band body (711), set firmly at steel band body (711) circumferential direction and be the steel band grafting body (712) of fan ring, steel band body (711) keep away from the one end of steel band grafting body (712) and offer the grafting recess with steel band grafting body (712) looks adaptation.

6. An insulated overhead cable as claimed in claim 5, wherein: the steel belt stranding layer (7) is at least two layers.

7. An insulated overhead cable as claimed in claim 6, wherein: the steel belt splicing layers (71) of the two adjacent steel belt stranding layers (7) are arranged in a staggered mode.

8. An insulated overhead cable as claimed in claim 1, wherein: the steel core supporting body (1) comprises a steel core (11), and the peripheral surface of the steel core (11) is sequentially coated with a first insulating layer (12) and a first shielding layer (13).

9. An insulated overhead cable as claimed in claim 1, wherein: cable aluminium core (2) are including aluminium core base member (21), the outer peripheral face of aluminium core base member (21) is wrapped in proper order the cladding has the second around covering (22), second insulating layer (23), second shielding layer (24), glass fiber enhancement layer (25).

Images