CN108242291A - Drawing uninterrupted type mooring optical cable - Google Patents
Drawing uninterrupted type mooring optical cable Download PDFInfo
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- 230000003287 optical effect Effects 0.000 title abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920000728 polyester Polymers 0.000 claims abstract description 18
- 229910001152 Bi alloy Inorganic materials 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 15
- 229910021392 nanocarbon Inorganic materials 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004760 aramid Substances 0.000 claims abstract description 10
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- 229920001684 low density polyethylene Polymers 0.000 claims description 10
- 239000004702 low-density polyethylene Substances 0.000 claims description 10
- 239000012212 insulator Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims 2
- 239000010949 copper Substances 0.000 claims 2
- 239000002105 nanoparticle Substances 0.000 claims 2
- 239000002131 composite material Substances 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
-
- 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
- H01B7/06—Extensible conductors or cables, e.g. self-coiling cords
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- Spectroscopy & Molecular Physics (AREA)
Abstract
Description
技术领域technical field
本发明涉及一种光电复合缆，具体是涉及拉延不断电型系留光缆。The invention relates to a photoelectric composite cable, in particular to a drawn uninterruptible mooring optical cable.
背景技术Background technique
目前，国内的光电复合缆主要有两大类：一类是以室外光缆结构为骨架，在松套管成缆时添加挤制绝缘层的电单元，再添加光缆常用的内护套、铠装层，挤制外护套，它的缺点是供应的电能受限制，电单元截面积较小；另一种是以低压电力电缆为骨架，在绝缘线芯成缆时添加光单元结构，再加上电力电缆常用的内护套、铠装层，挤制外护套，它的缺点是复合缆外径较大，这两类的光电复合缆敷设方式是架空、穿管、地埋等固定场所，是常用的光电缆敷设安装方式，在可移动使用的装置和装备中，这两类的光电复合缆受外径、柔软度和重量限制无法使用，特别是航空浮空器对产品的重量和柔软度要求更高，只能专门设计结构，以满足装置和装备的需求，为此，我们提出拉延不断电型系留光缆，同时需要让系留光缆在径向拉伸的情况下仍然能够确保供电。At present, there are two main types of photoelectric composite cables in China: one is based on the outdoor optical cable structure as the skeleton, and the electrical unit of the extruded insulating layer is added when the loose tube is cabled, and the inner sheath and armor commonly used in optical cables are added. layer, extruded outer sheath, its disadvantage is that the supply of electric energy is limited, and the cross-sectional area of the electric unit is small; The inner sheath, armor layer, and extruded outer sheath commonly used in power cables have the disadvantage that the outer diameter of the composite cable is larger. The laying methods of these two types of photoelectric composite cables are fixed places such as overhead, through pipes, and buried. , is a commonly used optical cable laying and installation method. In mobile devices and equipment, these two types of photoelectric composite cables cannot be used due to outer diameter, softness and weight restrictions, especially the weight and weight of the product for aviation aerostats. The softness requirements are higher, and the structure can only be specially designed to meet the needs of devices and equipment. For this reason, we propose to draw and uninterrupted power-type tethered optical cables, and at the same time, it is necessary to allow the tethered optical cables to be able to withstand radial stretching. Make sure it is powered.
发明内容Contents of the invention
本发明要解决的技术问题是克服现有技术的缺陷，提供拉延不断电型系留光缆，是采用合理的设计结构，将传输光信号的紧包光纤、传输电流的电源线、传输控制电信号的信号线与抗拉加强原件结合在一起的产品，解决了以往使用的光电复合缆在使用中存在的一些问题。The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to provide a drawing and uninterruptible mooring optical cable, which adopts a reasonable design structure, and integrates the tight-packed optical fiber for transmitting optical signals, the power line for transmitting current, and the transmission control circuit. The product that combines the signal line of the signal with the tensile strengthening element solves some problems in the use of the photoelectric composite cable used in the past.
为了解决上述技术问题，本发明提供了如下的技术方案：设计拉延不断电型系留光缆，包括外护套和聚酯带，聚酯带外挤包一层外护套，聚酯带内设有电信号线两根、芳纶纱四根、光单元两根和电源线两根，两根电信号线、四根芳纶纱、两根光单元和两根电源线以一定的绞合方向成缆，并且外部绕包聚酯带，电信号线设有线芯，线芯外部挤包有绝缘层，电源线设有导体，导体外部挤包有绝缘体，绝缘体材料为低密度聚乙烯，并且厚度为0.07mm，线芯采用的材料为韧铜线，绝缘层采用的材料为可溶性聚四氟乙烯（PFA），并且挤制而成，标称厚度为0.07mm，外护套材料为低密度聚乙烯，并且厚度为0.1mm，外护套外径小于2.3mm，电源线的导体采用纳米流体，的纳米流体的组份为：纳米碳粉30-60重量份、纳米铜粉40-60重量份、片状石墨粉60-80重量份、纳米铋合金10-30重量份。In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: design and draw the uninterruptible power type tethered optical cable, including an outer sheath and a polyester tape, and a layer of outer sheath is extruded outside the polyester tape, and the inner layer of the polyester tape is There are two electrical signal lines, four aramid yarns, two optical units and two power lines, two electrical signal lines, four aramid yarns, two optical units and two power lines are twisted in a certain way Cabled in the same direction and wrapped with polyester tape on the outside, the electrical signal line is provided with a core, the core is extruded with an insulating layer, the power line is provided with a conductor, the conductor is extruded with an insulator, and the insulator material is low-density polyethylene, and The thickness is 0.07mm, the wire core is made of tough copper wire, the insulation layer is made of soluble polytetrafluoroethylene (PFA), and it is extruded, the nominal thickness is 0.07mm, and the outer sheath material is low density Polyethylene, and the thickness is 0.1mm, the outer diameter of the outer sheath is less than 2.3mm, the conductor of the power line is made of nanofluid, and the components of the nanofluid are: 30-60 parts by weight of nano-carbon powder, 40-60 parts by weight of nano-copper powder parts, 60-80 parts by weight of flake graphite powder, and 10-30 parts by weight of nano-bismuth alloy.
进一步的，上述纳米碳粉的粉末颗粒尺寸为120纳米到300纳米。Further, the powder particle size of the above-mentioned nano-carbon powder is 120 nm to 300 nm.
进一步的，上述纳米铜粉的粉末颗粒尺寸为20纳米到100纳米。Further, the particle size of the above-mentioned nano-copper powder is 20 nm to 100 nm.
进一步的，上述片状石墨粉的粉末颗粒尺寸为10微米到100微米。Further, the powder particle size of the flake graphite powder is 10 microns to 100 microns.
进一步的，上述纳米铋合金的粉末颗粒尺寸为100纳米到300纳米。Further, the particle size of the nano-bismuth alloy powder is 100 nm to 300 nm.
本发明所达到的有益效果是：拉延不断电型系留光缆，采用纳米流体作为导体，可以在线缆出现径向拉伸的情况下，通过流体的变形，依然保持导体的供电，确保低空滞留的飞行器不至于坠毁，同时，在供电电阻增大的时候，控制系统可以通过增大电压的方式，让其中的纳米铋合金发生熔化，实现供电连接；在成份上，纳米碳粉提供良好的流动性和导电性，纳米铜粉提供良好的导电性，片状石墨粉通过相互重叠导电，增加材料的导电性；采用合理的设计结构，是将传输光信号的紧包光纤、传输电流的电源线、传输控制电信号的信号线与抗拉加强原件结合在一起的产品，在满足产品电气性能的前提下，选用密度较小的材料，对产品结构进行优化设计，合理选用各单元的集成方式，来实现产品的各种功能满足，外径小，重量轻，抗拉强度大，产品柔软能反复收放使用，其他电性能和光传输性能满足国家相关标准。The beneficial effects achieved by the present invention are: drawing and drawing the tethered optical cable with uninterruptible power, using nano-fluid as the conductor, can still maintain the power supply of the conductor through the deformation of the fluid when the cable is radially stretched, ensuring low-altitude The stranded aircraft will not crash. At the same time, when the power supply resistance increases, the control system can melt the nano-bismuth alloy in it by increasing the voltage to realize the power supply connection; in terms of composition, nano-carbon powder provides a good Fluidity and conductivity, nano-copper powder provides good conductivity, and flake graphite powder conducts electricity by overlapping each other to increase the conductivity of the material; with a reasonable design structure, it is the tight-packed optical fiber that transmits optical signals and the power supply that transmits current Lines, signal lines for transmitting control electrical signals and tensile strengthening components are combined together. Under the premise of satisfying the electrical performance of the product, materials with low density are selected, the product structure is optimized, and the integration method of each unit is reasonably selected. , to achieve various functions of the product, small outer diameter, light weight, high tensile strength, soft product can be used repeatedly, other electrical properties and optical transmission performance meet the relevant national standards.
附图说明Description of drawings
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:
图1是本发明拉延不断电型系留光缆的结构示意图。Fig. 1 is a schematic diagram of the structure of the drawn and uninterrupted power type tethered optical cable of the present invention.
图中：1-外护套、2-聚酯带、3-电信号线、301-绝缘层、302-线芯、4-芳纶纱、5-光单元、6-电源线、601-绝缘体、602-导体。In the figure: 1-Outer sheath, 2-Polyester tape, 3-Electrical signal line, 301-Insulation layer, 302-Core, 4-Aramid yarn, 5-Optical unit, 6-Power line, 601-Insulator , 602-conductor.
具体实施方式Detailed ways
以下结合附图对本发明的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明。The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
如图1所示，拉延不断电型系留光缆，包括外护套1和聚酯带2，聚酯带2外挤包一层外护套1，聚酯带2内设有电信号线3两根、芳纶纱4四根、光单元5两根和电源线6两根，两根电信号线3、四根芳纶纱4、两根光单元5和两根电源线6以一定的绞合方向成缆，并且外部绕包聚酯带2。As shown in Figure 1, the drawn uninterruptible power type tethered optical cable includes an outer sheath 1 and a polyester tape 2, the polyester tape 2 is extruded with a layer of outer sheath 1, and the polyester tape 2 is provided with an electrical signal line 3 two, 4 aramid yarns 4, two light units 5 and two power cords 6, two electrical signal lines 3, four aramid yarns 4, two light units 5 and two power cords 6 The stranding direction is cabled, and the polyester tape 2 is wrapped around the outside.
电信号线3设有线芯302，线芯302外部挤包有绝缘层301，电源线6设有导体602，导体602外部挤包有绝缘体601，绝缘体601材料为低密度聚乙烯，并且厚度为0.07mm，其绝缘性能和抗拉强度高，耐环境适应性强，线芯302采用的材料为韧铜线，绝缘层301采用的材料为可溶性聚四氟乙烯（PFA），并且挤制而成，标称厚度为0.07mm，外护套1材料为低密度聚乙烯，并且厚度为0.1mm，外护套1外径小于2.3mm，外护套1外径小，重量轻。The electric signal line 3 is provided with a wire core 302, and an insulating layer 301 is extruded on the outside of the wire core 302. The power line 6 is provided with a conductor 602, and an insulator 601 is extruded on the outside of the conductor 602. The material of the insulator 601 is low-density polyethylene, and the thickness is 0.07 mm, its insulation performance and tensile strength are high, and it has strong environmental adaptability. The material used for the core 302 is tough copper wire, and the material used for the insulating layer 301 is soluble polytetrafluoroethylene (PFA), and it is extruded. The nominal thickness is 0.07mm, the material of the outer sheath 1 is low-density polyethylene, and the thickness is 0.1mm, the outer diameter of the outer sheath 1 is less than 2.3mm, and the outer sheath 1 has a small outer diameter and light weight.
电源线的导体采用纳米流体，纳米流体的组份为：纳米碳粉30-60重量份、纳米铜粉40-60重量份、片状石墨粉60-80重量份、纳米铋合金10-30重量份，纳米碳粉的粉末颗粒尺寸为120纳米到300纳米，纳米铜粉的粉末颗粒尺寸为20纳米到100纳米，纳米铋合金的粉末颗粒尺寸为100纳米到300纳米。The conductor of the power line adopts nanofluid, and the components of the nanofluid are: 30-60 parts by weight of nano-carbon powder, 40-60 parts by weight of nano-copper powder, 60-80 parts by weight of flake graphite powder, and 10-30 parts by weight of nano-bismuth alloy The powder particle size of nano carbon powder is 120 nm to 300 nm, the powder particle size of nano copper powder is 20 nm to 100 nm, and the powder particle size of nano bismuth alloy is 100 nm to 300 nm.
实施例一Embodiment one
纳米流体的组份为：纳米碳粉50重量份、纳米铜粉50重量份、片状石墨粉70重量份、纳米铋合金30重量份，纳米碳粉的粉末颗粒尺寸为120纳米到300纳米，纳米铜粉的粉末颗粒尺寸为20纳米到100纳米，纳米铋合金的粉末颗粒尺寸为100纳米到300纳米。The components of the nanofluid are: 50 parts by weight of nano-carbon powder, 50 parts by weight of nano-copper powder, 70 parts by weight of flake graphite powder, and 30 parts by weight of nano-bismuth alloy. The particle size of the nano-carbon powder is 120 nanometers to 300 nanometers. The powder particle size of the nano-copper powder is 20 nm to 100 nm, and the powder particle size of the nano-bismuth alloy is 100 nm to 300 nm.
实施例二Embodiment two
纳米流体的组份为：纳米碳粉30重量份、纳米铜粉60重量份、片状石墨粉60重量份、纳米铋合金30重量份，纳米碳粉的粉末颗粒尺寸为120纳米到300纳米，纳米铜粉的粉末颗粒尺寸为20纳米到100纳米，纳米铋合金的粉末颗粒尺寸为100纳米到300纳米。The components of the nanofluid are: 30 parts by weight of nano-carbon powder, 60 parts by weight of nano-copper powder, 60 parts by weight of flake graphite powder, and 30 parts by weight of nano-bismuth alloy. The particle size of the nano-carbon powder is 120 nanometers to 300 nanometers. The powder particle size of the nano-copper powder is 20 nm to 100 nm, and the powder particle size of the nano-bismuth alloy is 100 nm to 300 nm.
实施例三Embodiment Three
纳米流体的组份为：纳米碳粉30重量份、纳米铜粉60重量份、片状石墨粉60重量份、纳米铋合金10重量份，纳米碳粉的粉末颗粒尺寸为120纳米到300纳米，纳米铜粉的粉末颗粒尺寸为20纳米到100纳米，纳米铋合金的粉末颗粒尺寸为100纳米到300纳米。The components of the nanofluid are: 30 parts by weight of nano-carbon powder, 60 parts by weight of nano-copper powder, 60 parts by weight of flake graphite powder, and 10 parts by weight of nano-bismuth alloy. The particle size of the nano-carbon powder is 120 nanometers to 300 nanometers. The powder particle size of the nano-copper powder is 20 nm to 100 nm, and the powder particle size of the nano-bismuth alloy is 100 nm to 300 nm.
本发明的原理及优点：区别于以前的是，以前用的光电复合缆，供应的电能受限制，电单元截面积较小，而且外径比较大，以往光电复合缆敷设方式是架空、穿管、地埋等固定场所，是常用的光电缆敷设安装方式，在可移动使用的装置和装备中，这两类的光电复合缆受外径、柔软度和重量限制无法使用，本发明拉延不断电型系留光缆，采用合理的设计结构，是将传输光信号的光单元5、传输电流的电源线6、传输控制电信号的电信号线3与抗拉加强原件芳纶纱4结合在一起的产品，电源线6选用低密度聚乙烯材料，其绝缘性能和抗拉强度远高于普通电源线6使用的聚氯乙烯，耐环境适应性强，适合室外使用，且该绝缘层标称厚度为0.07mm，能满足电缆的工作电压要求，本发明增加了两根电信号线3，起到监控作用，该电信号线3内芯采用韧铜线，绝缘层301采用可溶性聚四氟乙烯（PFA）绝缘材料挤制，标称厚度为0.07mm，挤制时采用超薄壁绝缘挤出技术，采用两根电源线6、两根光单元5、两根电信号线3、四根芳纶纱4加强件以一定的绞合方向成缆，绕包聚酯带2，挤包一层厚度为0.1mm的低密度聚乙烯材料做外护套1，整体多功能集成化微型系留光缆外径小于2.3mm，重量每米不超过10克，产品抗拉强度大于500N，产品柔软能反复收放使用，其他电性能和光传输性能满足国家相关标准。采用纳米流体作为导体，可以在线缆出现径向拉伸的情况下，通过流体的变形，依然保持导体的供电，确保低空滞留的飞行器不至于坠毁，同时，在供电电阻增大的时候，控制系统可以通过增大电压的方式，让其中的纳米铋合金发生熔化，实现供电连接；在成份上，纳米碳粉提供良好的流动性和导电性，纳米铜粉提供良好的导电性，片状石墨粉通过相互重叠导电，增加材料的导电性。The principle and advantages of the present invention: the difference from the previous photoelectric composite cable is that the power supply is limited, the cross-sectional area of the electric unit is small, and the outer diameter is relatively large. In the past, the photoelectric composite cable was laid overhead and through pipes. , underground and other fixed places are commonly used optical cable laying and installation methods. In mobile devices and equipment, these two types of photoelectric composite cables cannot be used due to outer diameter, softness and weight restrictions. The present invention continues to draw The electrical tethered optical cable adopts a reasonable design structure, which combines the optical unit 5 for transmitting optical signals, the power line 6 for transmitting current, the electrical signal line 3 for transmitting control electrical signals, and the aramid yarn 4 for tensile strength The product, the power cord 6 is made of low-density polyethylene material, its insulation performance and tensile strength are much higher than the polyvinyl chloride used in ordinary power cord 6, and it has strong environmental adaptability and is suitable for outdoor use, and the nominal thickness of the insulating layer is It is 0.07mm, which can meet the working voltage requirements of the cable. The present invention adds two electric signal wires 3 to play a monitoring role. The inner core of the electric signal wire 3 adopts tough copper wire, and the insulating layer 301 adopts soluble polytetrafluoroethylene ( PFA) insulation material extrusion, the nominal thickness is 0.07mm, ultra-thin wall insulation extrusion technology is used for extrusion, two power lines 6, two optical units 5, two electrical signal lines 3, four aramid fiber The yarn 4 reinforcement is cabled in a certain twisting direction, wrapped with a polyester tape 2, extruded with a layer of low-density polyethylene material with a thickness of 0.1mm as the outer sheath 1, and the overall multi-functional integrated miniature tethered optical cable The diameter is less than 2.3mm, the weight does not exceed 10 grams per meter, the tensile strength of the product is greater than 500N, the product is soft and can be used repeatedly, and other electrical properties and optical transmission properties meet the relevant national standards. Using nanofluid as a conductor can still maintain the power supply of the conductor through the deformation of the fluid in the case of radial stretching of the cable, ensuring that the aircraft stranded at low altitude will not crash. At the same time, when the power supply resistance increases, control The system can melt the nano-bismuth alloy in it by increasing the voltage to realize power supply connection; in terms of composition, nano-carbon powder provides good fluidity and conductivity, nano-copper powder provides good conductivity, flake graphite The powder conducts electricity by overlapping each other, increasing the conductivity of the material.
最后应说明的是：以上仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。Finally, it should be noted that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still understand The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.
Claims (5)
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