CN109994269B - Direct-buried semi-armored cable - Google Patents
Direct-buried semi-armored cable Download PDFInfo
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- CN109994269B CN109994269B CN201910308258.0A CN201910308258A CN109994269B CN 109994269 B CN109994269 B CN 109994269B CN 201910308258 A CN201910308258 A CN 201910308258A CN 109994269 B CN109994269 B CN 109994269B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1845—Sheaths comprising perforations
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a direct-buried semi-armored cable which comprises a cable outer covering layer and an inner core wire arranged in the cable outer covering layer, wherein an installation cavity is formed in the cable outer covering layer, the inner core wire is arranged in the installation cavity, an expansion layer wraps the outer portion of the inner core wire, more than one section of support section extending inwards is formed by bending the cable outer covering layer, each support section is arranged in a circle around the cable outer covering layer, the inner side end of each support section is in contact with the outer wall of the expansion layer for supporting, more than one section of support section forms a clamping opening, and more than one positioning through hole is formed in two sides of the inner wall of the clamping opening at equal intervals around the cable outer covering layer. The cable provided by the invention adopts a semi-armored mode, saves a large amount of metal materials, can achieve very good protection performance, can expand the whole cable after resisting enough pressure, further protects the inner core wire by utilizing the expansion layer, and is particularly suitable for the field of direct-buried installation.
Description
Technical Field
The invention relates to a cable, in particular to a direct-buried semi-armored cable.
Background
The armored cable is generally selected for the direct-buried cable, the external armored layer is used for protecting the internal core wire, but the structural strength of the armored layer is high, a large amount of metal materials must be filled in the armored layer, so that the strength can be ensured to meet the direct-buried installation environment, and the price is more expensive than that of the common cable. The buried cable is easily sheared and extruded from the outside under the ground, so that the cable is damaged, and serious economic loss is caused. But although setting up the armor, its anti-shear capacity still is not enough, to external force shearing, external force direct action is on the armor, and the internal core line of armor inside also can directly receive the shearing, owing to do not have a buffer capacity, so the protective capacities still is relatively poor.
Disclosure of Invention
The invention aims to solve the technical problem that a direct-buried semi-armored cable can achieve good anti-shearing capability by adopting a very small amount of metal materials, has good buffering capability when being sheared, has enough supporting capability and has a secondary protection function, an outer covering layer of the cable is thickened in a bending manner, the buffering capability is increased in a bending manner, and various defects in the prior art can be effectively overcome.
The invention is realized by the following technical scheme: a direct-buried half armored cable comprises a cable outer layer and an inner core wire arranged in the cable outer layer, wherein an installation cavity is formed in the cable outer layer, the inner core wire is arranged in the installation cavity, an expansion layer wraps the outer portion of the inner core wire, more than one section of supporting section extending inwards is formed in the cable outer layer in a bending mode, each supporting section surrounds the cable outer layer in a circle and supports the inner side end of the supporting section and the outer wall of the expansion layer in a contact mode, a clamping opening is formed between the more than one section of supporting section, more than one positioning through holes are formed in the two sides of the inner wall of the clamping opening in an equidistant mode around the cable outer layer, a sealing connection section is inserted between the adjacent positioning through holes in the two side faces of the clamping opening in a sealing mode, and the two sides of the sealing connection section are respectively inserted into the positioning through holes.
According to the preferable technical scheme, the sealing connection section is made of rubber materials, the two sides of the sealing connection section are respectively provided with a clamping ring with the outer diameter larger than that of the sealing connection section, the sealing connection section is cylindrical, the outer diameter of the sealing connection section is equal to the inner diameter of the positioning through hole, the clamping ring penetrates through the positioning through hole and extends into the installation cavity in the outer tegument of the cable, and the clamping ring limits the clamping opening formed by bending and keeps the clamping opening in a fixed included angle.
As a preferred technical scheme, more than one circle of annular grooves are respectively formed in two sides of the sealing connection section, sealing rings are respectively installed in the annular grooves, and the sealing rings are arranged at the positions of the positioning through holes.
According to a preferable technical scheme, the expansion layer comprises an elastic outer covering layer, an expansion cavity is formed in the middle of the elastic outer covering layer, memory sponge is filled in the expansion cavity, more than one air suction small hole is formed in the elastic outer covering layer, each air suction small hole is sealed through a positioning convex part arranged on the supporting section, and the positioning convex parts are inserted into the air suction small holes in a positioning mode to seal the air suction small holes.
Preferably, the cable outer layer is made of a rubber material with deformation recovery capability.
As an optimized technical scheme, more than one clamping groove is formed in the outer portion of the cable exterior layer in a surrounding mode, the clamping grooves are formed in the outer side face of the cable exterior layer between every two adjacent clamping openings, and each clamping groove is filled with a metal wire and is fixedly bonded with the clamping groove through glue.
The invention has the beneficial effects that: the cable outer layer is made of rubber with a deformation recovery material, so that the cable outer layer has very good flexibility, is lower in cost compared with a metal material, and can achieve very good strength only by adopting less metal;
the cable outer tegument layer is bent to form a plurality of supporting sections, the thickness of the cable outer tegument layer is thickened by the bent supporting sections, so that the cable outer tegument layer has better supporting capability when being sheared, and the bent supporting sections can be used as buffering pieces, so that the cable outer tegument layer has supporting capability and buffering capability;
the supporting section and the sealing connection section can be separated after being sheared, the positioning through hole is conducted, the outer tegument of the whole cable can restore deformation at the moment, the whole size is enlarged after the deformation is restored, the appearance is clearer, the continuous operation shearing of an operator can be effectively prevented, the limit of an expansion layer is relieved, the expansion part can suck gas to restore the deformation, namely, the expansion layer which restores the deformation is utilized to protect the inner core wire, and the secondary protection function is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the intumescent layer of the invention;
FIG. 3 is a schematic view of the assembly structure between the sealing joint section and the cable jacket of the present invention;
FIG. 4 is a schematic structural diagram of the present invention after deformation is restored.
Detailed Description
As shown in fig. 1, the directly buried half armored cable comprises a cable outer layer 1 and an inner core wire 2 arranged in the cable outer layer 1, wherein an installation cavity 3 is arranged in the cable outer layer 1, the inner core wire 2 is arranged in the installation cavity 3, an expansion layer 5 wraps the outer portion of the inner core wire 2, more than one section of support section 22 extending inwards is formed by bending the cable outer layer 1, each support section 22 surrounds the cable outer layer 1 for a circle and the inner side end of each support section 22 is in contact with the outer wall of the expansion layer 5 for supporting, more than one section of support section 22 forms a clamping opening 21, more than one positioning through hole (not shown) is formed in two sides of the inner wall of the clamping opening in an equidistant mode around the cable outer layer, a sealing connection section 4 is inserted between adjacent positioning through holes in two side faces of the clamping opening in a sealing mode, and two sides of the sealing connection section 4 are respectively inserted into the positioning through holes in the two side.
In this embodiment, the sealing connection section 4 has a micro-deformation capability, and needs to have the same radian as a circular cable outer layer after assembly, so as shown in fig. 3, the sealing connection section 4 is made of rubber material, two sides of the sealing connection section are respectively provided with a snap ring 32 having an outer diameter larger than that of the sealing connection section, the sealing connection section is cylindrical, the outer diameter of the sealing connection section is equal to the inner diameter of the positioning through hole, the snap ring penetrates through the positioning through hole and extends into an installation cavity inside the cable outer layer, and the snap ring limits a clamp opening formed by bending and keeps the clamp opening in a fixed included angle. Under the condition that the sealing connecting section is installed, the shape of the whole cable outer tegument is as shown in figure 1, therefore, as long as the sealing connecting section is not dismounted, the whole cable outer tegument cannot recover deformation, more than one circle of annular grooves 31 are respectively arranged on two sides of the sealing connecting section, a sealing ring is respectively arranged in each annular groove, the sealing rings are arranged at the positions of the positioning through holes, and the sealing capacity is improved through the sealing rings.
The snap ring of 4 both sides of sealing connection section blocks the positioning hole that every presss from both sides a mouthful inner wall and offers, make to form the support section more than one section and form and press from both sides the mouth under the effect of snap ring, therefore, when the outside receives external force extrusion, press from both sides a mouthful grow, the snap ring can be followed and extracted in the positioning hole this moment, along with the little increase of pressure, finally make a large amount of sealing connection sections extract from positioning hole, the cable outer tegument can be corresponding at this moment and resume deformation according to the extraction quantity of sealing connection section, as shown in figure 4, whole cable outer tegument volume grow this moment, the appearance is more obvious, force application personnel also can see clearly, and then stop the operation. When the cable is sheared, all the support sections are used as compression-resistant supports, and even if only a small amount of metal materials are used for the outer layer of the whole cable, the very shear-resistant performance can be achieved.
In this embodiment, as shown in fig. 2, the expansion layer 5 includes an elastic outer layer 21 having elasticity, an expansion cavity is provided in the middle of the elastic outer layer 21, the expansion cavity is filled with a memory sponge 22, more than one small air suction holes (not shown) are provided on the elastic outer layer 21, each small air suction hole is sealed by a positioning convex part (not shown) provided on the support section 22, the positioning convex part is positioned and inserted in the small air suction hole to seal the small air suction hole, after the support section recovers its deformation, the space limitation on the expansion layer is removed, at this time, the small air suction holes on the expansion layer suck air to recover its deformation, and after the deformation is recovered, the thickened memory sponge is used to protect the whole inner core wire, so that the protection capability is very.
In this embodiment, the cable jacket layer 1 is made of a rubber material having a deformation recovery capability, and is not too flexible, otherwise, the support capability is poor.
Wherein, the outside of cable ectonexine has seted up more than one draw-in groove around the cable ectonexine, the draw-in groove is seted up on the cable ectonexine lateral surface between two adjacent double-layered mouths, all fill a wire 6 in every draw-in groove and through glue and draw-in groove bonding fixed, above-mentioned structure can only adopt a small amount of metal material can accept external force and cut, when receiving external force promptly, only can contact earlier with the wire of outside, consequently a large amount of metal material can be saved to such structure, practice thrift the cost.
The invention has the beneficial effects that: the cable outer layer is made of rubber with a deformation recovery material, so that the cable outer layer has very good flexibility, is lower in cost compared with a metal material, and can achieve very good strength only by adopting less metal;
the cable outer tegument layer is bent to form a plurality of supporting sections, the thickness of the cable outer tegument layer is thickened by the bent supporting sections, so that the cable outer tegument layer has better supporting capability when being sheared, and the bent supporting sections can be used as buffering pieces, so that the cable outer tegument layer has supporting capability and buffering capability;
the supporting section and the sealing connection section can be separated after being sheared, the positioning through hole is conducted, the outer tegument of the whole cable can restore deformation at the moment, the whole size is enlarged after the deformation is restored, the appearance is clearer, the continuous operation shearing of an operator can be effectively prevented, the limit of an expansion layer is relieved, the expansion part can suck gas to restore the deformation, namely, the expansion layer which restores the deformation is utilized to protect the inner core wire, and the secondary protection function is achieved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. The utility model provides a half armoured cable of formula of directly burying which characterized in that: including the cable ectonexine and set up in the intraformational heart yearn of cable ectonexine, the cable ectonexine has an installation cavity, and the heart yearn sets up in the installation cavity, the outside parcel one deck inflation layer of heart yearn, bend on the cable ectonexine and form the support section of more than one section inside extension, each support section encircles the setting of cable ectonexine round and supports the medial extremity of section and the outer wall contact support of inflation layer, all forms one between the support section more than one and presss from both sides the mouth, encircles the cable ectonexine and set up more than one positioning hole in pressing from both sides mouthful inner wall both sides equidistance, presss from both sides and inserts a sealing connection section between the adjacent positioning hole of mouthful both sides face, and the both sides of sealing connection section insert respectively in the positioning hole on pressing from both sides.
2. A buried semi-armored cable according to claim 1, wherein: the sealing connection section is made of rubber materials, snap rings with outer diameters larger than that of the sealing connection section are arranged on two sides of the sealing connection section respectively, the sealing connection section is cylindrical, the outer diameter of the sealing connection section is equal to the inner diameter of the positioning through hole, the snap rings penetrate through the positioning through hole and extend into the installation cavity in the outer tegument of the cable, and the snap rings limit and bend the formed clamping openings and keep the clamping openings in a fixed included angle.
3. A buried semi-armored cable according to claim 2, wherein: more than one circle of annular grooves are formed in the two sides of the sealing connection section respectively, sealing rings are installed in the annular grooves, and the sealing rings are arranged at the positions of the positioning through holes.
4. A buried semi-armored cable according to claim 1, wherein: the expansion layer comprises an elastic outer tegument, an expansion cavity is arranged in the middle of the elastic outer tegument, memory sponge is filled in the expansion cavity, more than one air suction small hole is formed in the elastic outer tegument, each air suction small hole is sealed through a positioning convex part arranged on the supporting section, and the positioning convex parts are inserted into the air suction small holes in a positioning mode to seal the air suction small holes.
5. A buried semi-armored cable according to claim 1, wherein: the cable outer layer is made of rubber materials with deformation recovery capability.
6. A buried semi-armored cable according to claim 1, wherein: the outer portion of the cable exterior layer surrounds the cable exterior layer and is provided with more than one clamping groove, the clamping grooves are formed in the outer side face of the cable exterior layer between every two adjacent clamping openings, and each clamping groove is filled with a metal wire and is fixedly bonded with the clamping groove through glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308258.0A CN109994269B (en) | 2019-04-17 | 2019-04-17 | Direct-buried semi-armored cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308258.0A CN109994269B (en) | 2019-04-17 | 2019-04-17 | Direct-buried semi-armored cable |
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| Publication Number | Publication Date |
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| CN109994269A CN109994269A (en) | 2019-07-09 |
| CN109994269B true CN109994269B (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910308258.0A Active CN109994269B (en) | 2019-04-17 | 2019-04-17 | Direct-buried semi-armored cable |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534247B (en) * | 2019-09-04 | 2020-11-27 | 义乌市丹航科技有限公司 | Composite cable |
| CN110993203B (en) * | 2019-12-24 | 2021-05-11 | 浙江正泰电缆有限公司 | Preparation method of aluminum alloy cable |
| CN111473169A (en) * | 2020-04-14 | 2020-07-31 | 吴航君 | Breathing type telescopic pipeline |
| CN111540520B (en) * | 2020-05-08 | 2021-08-31 | 中电线缆有限公司 | Composite cable |
| CN113903516B (en) * | 2021-09-24 | 2023-12-01 | 浙江亘古电缆股份有限公司 | High-protection-performance direct-buried semi-armored cable |
| CN114496362B (en) * | 2021-12-29 | 2023-09-19 | 杭州惠尔线缆有限公司 | Security cable |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63313415A (en) * | 1987-06-15 | 1988-12-21 | Sumitomo Electric Ind Ltd | Power cable |
| CN106848992B (en) * | 2017-04-17 | 2018-06-15 | 苏州鼎鑫冷热缩材料有限公司 | A kind of silicon rubber cold shrinking power cable adjunct |
| CN206921543U (en) * | 2017-05-23 | 2018-01-23 | 国网山西省电力公司 | A kind of tensile wear-resistant composite cable |
| CN108492924B (en) * | 2017-12-25 | 2020-08-04 | 飞洲集团有限公司 | Expansion flame-retardant power cable |
| CN108806868B (en) * | 2018-06-15 | 2020-02-07 | 上海沪达高温线缆有限公司 | Composite cable |
| CN108899123B (en) * | 2018-07-05 | 2019-10-22 | 东阳市阳涛电子科技有限公司 | A kind of cable |
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Effective date of registration: 20200426 Address after: 317099 No. 167 Shen Nan Road, Dayang street, Taizhou, Zhejiang Applicant after: ZHEJIANG GENGU CABLE Co.,Ltd. Address before: 322105 1-495, Dali Village, Ge Shan town, Dongyang, Jinhua, Zhejiang Applicant before: Jiang Rongxin |
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