CN109390093B - Tensile photovoltaic cable capable of adapting to severe environment - Google Patents
Tensile photovoltaic cable capable of adapting to severe environment Download PDFInfo
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- CN109390093B CN109390093B CN201811105511.4A CN201811105511A CN109390093B CN 109390093 B CN109390093 B CN 109390093B CN 201811105511 A CN201811105511 A CN 201811105511A CN 109390093 B CN109390093 B CN 109390093B
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- rope
- circular ring
- cylindrical
- pulling force
- cylindrical part
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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
- H01B7/1875—Multi-layer sheaths
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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
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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
- H01B7/24—Devices affording localised protection against mechanical force or pressure
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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Abstract
The invention discloses a tensile photovoltaic cable capable of adapting to severe environment, which comprises a cable body, an air bag unit and a protective sleeve, wherein a first fixing block and a second fixing block are fixed on the cable body, the air bag unit comprises a first circular ring part, a second circular ring part and a circular cylindrical part when being filled with air, the first fixing block is connected with a first rope part, the second fixing block is connected with a second rope part, the first rope part is connected with a first cylindrical part, the second rope part is connected with a second cylindrical part, a third rope part is connected between the open end of the first cylindrical part and the open end of the second cylindrical part, the closed end of the second cylindrical part is connected with one end of a spring, the other end of the spring is connected with a sliding block positioned in the first cylindrical part, and a plurality of spine parts are arranged at the sliding block. The cable provided by the invention has good insulation and flame retardant properties, and when the cable is pulled strongly, the third rope part can be broken, the air bag can be broken, and the spirally wound cable body can provide extra elongation, so that the cable body is not easy to tear.
Description
Technical Field
The invention relates to the field of cables, in particular to a tensile photovoltaic cable capable of adapting to severe environments.
Background
Solar technology will become one of the green energy technologies in the future, solar energy or Photovoltaic (PV) is increasingly widely used in china, and besides the rapid development of government-supported photovoltaic power plants, private investors are actively building factories and planning to put in production of solar modules for global sale. Photovoltaic cable is in the use, and solar cell panel all sets up on open field or the surface of water, consequently probably meets with bad weather such as strong wind, draws the cable bad easily when bad weather pulls, influences life.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides a tensile photovoltaic cable capable of adapting to severe environments.
The technical scheme is as follows: a photovoltaic cable comprises a cable body, an air bag unit and a protective sleeve, wherein a first fixed block and a second fixed block are fixed on the cable body, the air bag unit comprises a first circular ring part, a second circular ring part and a circular ring cylindrical part positioned between the first circular ring part and the second circular ring part when being full of air, the inner part of the circular ring cylindrical part is communicated with the inner parts of the first circular ring part and the second circular ring part, the first circular ring part is provided with a first central hole and a first through hole for the cable body to pass through, the second circular ring part is provided with a second central hole and a second through hole for the cable body to pass through, and the part of the cable body positioned between the first circular ring part and the second circular ring part is spirally wound outside the circular ring cylindrical part; the first fixing block is connected with a first rope part, the second fixing block is connected with a second rope part, the first rope part is connected with a first cylindrical part with one open end, the second rope part is connected with a second cylindrical part with one open end, a third rope part is connected between the open end of the first cylindrical part and the open end of the second cylindrical part, the closed end of the second cylindrical part is connected with one end of a spring, the other end of the spring is connected with a sliding block positioned in the first cylindrical part, and the sliding block is provided with a plurality of spine parts; the protective sleeve comprises a sleeve with openings at two ends, a first circular annular plate and a second circular annular plate are fixed in the sleeve, and the air bag is positioned between the first circular annular plate and the second circular annular plate; when the third rope part bears the pulling force of the first pulling force, the third rope part can be broken; when the first rope part bears the pulling force of the second pulling force, the first rope part cannot be broken, and when the second rope part bears the pulling force of the second pulling force, the second rope part cannot be broken; the second pulling force is 1.5 times greater than the first pulling force.
Furthermore, the air bag is abutted against the first circular plate and the second circular plate.
Furthermore, 4 third rope parts are connected between the first and second cylindrical parts, 1 first rope part is connected between the first fixing block and the first cylindrical part, and 1 second rope part is connected between the second fixing block and the second cylindrical part; the second pulling force is greater than 6 times the first pulling force.
Further, the air bag is made of rubber.
Further, the spring is in a compressed state, and at least one needle portion of the slider abuts against the closed end of the first cylindrical portion.
Further, the first and second cylindrical portions have the same length, and the third string portion has a length less than one fifth of the length of the first cylindrical portion.
Further, the cable body comprises an outer sheath, an armor layer and a first flame-retardant layer from outside to inside in sequence, a tensile rope and a plurality of core wires are arranged in the flame-retardant layer, and the core wires comprise a conductor, an insulating layer and a second flame-retardant layer from inside to outside in sequence.
Further, the outer sheath is made of polyvinyl chloride; the first flame-retardant layer and the second flame-retardant layer are halogen-free flame-retardant layers; the insulating layers are all polyethylene insulating layers.
Furthermore, the first fixing block and the second fixing block are fixedly bonded with the outer sheath.
Further, when the air bag is filled with air, the inner diameters of the first circular part and the second circular part are equal to the inner diameter of the circular cylindrical part.
Further, the first and second cylindrical portions are each cylindrical in shape.
Furthermore, the first rope part and the second rope part are both elastic pull ropes. When the third rope part is broken, the first cylindrical part and the second cylindrical part are far away from each other, so that the sliding block can slide out of the first cylindrical part conveniently.
Further, the first and second cylindrical portions are both located within the annular cylindrical portion.
Further, the first rope portion passes through the first circular portion, and the second rope portion passes through the second circular portion.
Further, the air bag unit is positioned between the first fixing block and the second fixing block.
Has the advantages that: the cable provided by the invention has good insulation and flame retardant properties, and when the cable is pulled strongly, the third rope part can be broken, the air bag can be broken, and the spirally wound cable body can provide extra elongation, so that the cable body is not easy to tear.
Drawings
FIG. 1 is a schematic diagram of a cable;
FIG. 2 is an enlarged view of area A;
FIG. 3 is a schematic view of a cable body;
FIG. 4 is a schematic view showing the distribution of the central hole and the first through holes of the first circular ring part.
Detailed Description
Reference numerals: 1, sleeving a sleeve; 1.1 a first annular plate; 1.2 a second annular plate; 2.1 a first circular part; 2.1.1 first central hole; 2.1.2 first vias; 2.2 second circular part; 2.3 a circular cylindrical portion; 3.1 a first fixed block; 3.2 a second fixed block; 4.1 a first rope portion; 4.2 a second rope portion; 5.1 first cylindrical part; 5.2 second cylindrical part; 5.3 a third rope portion; 5.4 a spring; 5.5 a slide block; 5.6 needling part; 10 a cable body; 11 an outer sheath; 12 an armor layer; 13 a first flame retardant layer; 14 a second flame retardant layer; 15 an insulating layer; 16 conductors; 17 tensile cords.
A photovoltaic cable comprises a cable body 10, an air bag unit and a protective sleeve, wherein a first fixing block 3.1 and a second fixing block 3.2 are fixed on the cable body, the air bag unit comprises a first circular ring part 2.1, a second circular ring part 2.2 and a circular ring cylindrical part 2.3 positioned between the first circular ring part and the second circular ring part when being full of air, the inner parts of the circular ring cylindrical part and the first circular ring part are communicated, the first circular ring part is provided with a first central hole and a first through hole for a cable body to pass through, the second circular ring part is provided with a second central hole and a second through hole for the cable body to pass through, and the part of the cable body positioned between the first circular ring part and the second circular ring part is spirally wound outside the circular ring cylindrical part; the first fixing block is connected with a first rope part 4.1, the second fixing block is connected with a second rope part 4.2, the first rope part is connected with a first cylindrical part 5.1 with an opening at one end, the second rope part is connected with a second cylindrical part 5.2 with an opening at one end, a third rope part 5.3 is connected between the opening end of the first cylindrical part and the opening end of the second cylindrical part, the closed end of the second cylindrical part is connected with one end of a spring 5.4, the other end of the spring is connected with a sliding block 5.5 positioned in the first cylindrical part, and the sliding block is provided with a plurality of spine parts 5.6; the protective sleeve comprises a sleeve with openings at two ends, a first circular annular plate and a second circular annular plate are fixed in the sleeve, and the air bag is positioned between the first circular annular plate and the second circular annular plate; when the third rope part bears the pulling force of the first pulling force, the third rope part can be broken; when the first rope part bears the pulling force of the second pulling force, the first rope part cannot be broken, and when the second rope part bears the pulling force of the second pulling force, the second rope part cannot be broken; the second pulling force is 1.5 times greater than the first pulling force.
The air bag is connected with the first and the second circular ring plates in an abutting mode. 4 third rope parts are connected between the first cylindrical part and the second cylindrical part, 1 first rope part is connected between the first fixing block and the first cylindrical part, and 1 second rope part is connected between the second fixing block and the second cylindrical part; the second pulling force is greater than 6 times the first pulling force. The air bag is made of rubber. The spring is in a compressed state, and at least one needle-punched portion of the slider abuts against the closed end of the first cylindrical portion. The first and second cylindrical portions are equal in length, and the third string portion is shorter than one fifth of the first cylindrical portion. The cable body comprises an outer sheath, an armor layer and a first flame-retardant layer from outside to inside in sequence, a tensile rope and a plurality of core wires are arranged in the flame-retardant layer, and the core wires comprise a conductor, an insulating layer and a second flame-retardant layer from inside to outside in sequence. The outer sheath is made of polyvinyl chloride; the first flame-retardant layer and the second flame-retardant layer are halogen-free flame-retardant layers; the insulating layers are all polyethylene insulating layers. The first fixing block and the second fixing block are fixedly bonded with the outer sheath.
As shown in the figure, when in normal use, the first rope part, the first cylindrical part, the third rope part, the second cylindrical part and the second rope part are connected between the first fixing block and the second fixing block, the cable body at the section is protected, the first rope part, the second fixing block and the third rope part bear tensile force, when the cable body is pulled to reach a certain limit, the third rope part is broken, so that the sliding block slides out of the first cylindrical part, the needling part pierces the air bag, the air bag is rapidly shrunk, and the spirally wound cable body is released, thereby providing extra tensile force. The cable body is prevented from being pulled and broken. In addition, the protective sleeve protects the air bag and avoids the air bag from being damaged by friction in normal use.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
Claims (9)
1. The tensile photovoltaic cable capable of adapting to severe environment is characterized by comprising a cable body, an air bag unit and a protective sleeve, wherein a first fixed block and a second fixed block are fixed on the cable body, the air bag unit comprises a first circular ring part, a second circular ring part and a circular ring cylindrical part positioned between the first circular ring part and the second circular ring part when being full of air, the inner part of the circular ring cylindrical part is communicated with the inner parts of the first circular ring part and the second circular ring part, the first circular ring part is provided with a first central hole and a first through hole for the cable body to pass through, the second circular ring part is provided with a second central hole and a second through hole for the cable body to pass through, and the part of the cable body positioned between the first circular ring part and the second circular ring part is spirally wound outside the circular ring cylindrical part; the first fixing block is connected with a first rope part, the second fixing block is connected with a second rope part, the first rope part is connected with a first cylindrical part with one open end, the second rope part is connected with a second cylindrical part with one open end, a third rope part is connected between the open end of the first cylindrical part and the open end of the second cylindrical part, the closed end of the second cylindrical part is connected with one end of a spring, the other end of the spring is connected with a sliding block positioned in the first cylindrical part, and the sliding block is provided with a plurality of spine parts; the protective sleeve comprises a sleeve with openings at two ends, a first circular annular plate and a second circular annular plate are fixed in the sleeve, and the air bag unit is positioned between the first circular annular plate and the second circular annular plate; when the third rope part bears the pulling force of the first pulling force, the third rope part can be broken; when the first rope part bears the pulling force of the second pulling force, the first rope part cannot be broken, and when the second rope part bears the pulling force of the second pulling force, the second rope part cannot be broken; the second pulling force is 1.5 times greater than the first pulling force.
2. The tension-resistant photovoltaic cable capable of adapting to severe environment according to claim 1, wherein the air bag unit abuts against both the first and second circular ring-shaped plates.
3. The tension-resistant photovoltaic cable capable of adapting to severe environments as claimed in claim 1, wherein 4 third rope portions are connected between the first and second cylindrical portions, 1 first rope portion is connected between the first fixing block and the first cylindrical portion, and 1 second rope portion is connected between the second fixing block and the second cylindrical portion; the second pulling force is greater than 6 times the first pulling force.
4. The rugged environment-adaptable tension-resistant photovoltaic cable of claim 1, wherein the air cell unit is made of rubber.
5. The rugged environment resistant tensile photovoltaic cable of claim 1, wherein the spring is in compression and the at least one needled portion of the slider block abuts the closed end of the first cylindrical portion.
6. The rugged environment-adaptable tension-resistant photovoltaic cable of claim 1, wherein the first and second cylindrical portions are equal in length, and the third cord portion is less than one fifth the length of the first cylindrical portion.
7. The tension-resistant photovoltaic cable capable of adapting to severe environment according to claim 1, wherein the cable body comprises an outer sheath, an armor layer and a first flame-retardant layer from outside to inside in sequence, the first flame-retardant layer is internally provided with a tension-resistant rope and a plurality of core wires, and the core wires comprise a conductor, an insulating layer and a second flame-retardant layer from inside to outside in sequence.
8. The rugged environment-adaptable tensile photovoltaic cable of claim 7, wherein said outer jacket is made of polyvinyl chloride; the first flame-retardant layer and the second flame-retardant layer are halogen-free flame-retardant layers; the insulating layer is a polyethylene insulating layer.
9. The tension-resistant photovoltaic cable capable of adapting to severe environments as claimed in claim 7, wherein the first and second fixing blocks are fixed to the outer sheath in an adhesive manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105511.4A CN109390093B (en) | 2018-09-21 | 2018-09-21 | Tensile photovoltaic cable capable of adapting to severe environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811105511.4A CN109390093B (en) | 2018-09-21 | 2018-09-21 | Tensile photovoltaic cable capable of adapting to severe environment |
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| Publication Number | Publication Date |
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| CN109390093A CN109390093A (en) | 2019-02-26 |
| CN109390093B true CN109390093B (en) | 2020-02-21 |
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| CN111403090B (en) * | 2020-03-11 | 2021-04-09 | 扬州曙光电缆股份有限公司 | Special cable for harsh environment of third-generation nuclear power station |
| CN114121364B (en) * | 2021-12-30 | 2024-01-30 | 张家港南源光电科技有限公司 | Tensile photovoltaic cable capable of adapting to severe environment |
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| JP2005137082A (en) * | 2003-10-29 | 2005-05-26 | Yazaki Corp | Regular feeder system |
| CN106078801B (en) * | 2016-07-08 | 2018-04-10 | 北京空间飞行器总体设计部 | A kind of uiform section space manipulator armed lever telescoping mechanism |
| CN207234104U (en) * | 2017-08-02 | 2018-04-13 | 张乐泷 | The anti-data cable that fractures of one kind |
| CN108010630A (en) * | 2017-11-24 | 2018-05-08 | 安徽内售网络科技有限公司 | A kind of scalable construction of cable of anti-pull |
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