CN103606404A - Irrigation cable - Google Patents
Irrigation cable Download PDFInfo
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- CN103606404A CN103606404A CN201310584901.5A CN201310584901A CN103606404A CN 103606404 A CN103606404 A CN 103606404A CN 201310584901 A CN201310584901 A CN 201310584901A CN 103606404 A CN103606404 A CN 103606404A
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- cable
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- polyvinyl chloride
- irrigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses an irrigation cable. The irrigation cable comprises a center cable core and an outer sheath layer at an outer layer, wherein the cable core comprises multiple stranded insulation wire cores, the outer sheath layer is prepared by employing polyurethane elastomer, an inner polyvinyl chloride lining layer and a composite plastic-aluminum belt longitudinal covering shielding layer are sequentially extruded between the cable core and the polyurethane elastomer outer sheath layer from inside to outside, each insulation wire core comprises a conductor and an insulation layer extruded outside the conductor, the insulation layer comprises an inner polyvinyl chloride insulation layer and an outer nylon insulation layer extruded at an outer surface of the inner polyvinyl chloride insulation layer, polypropylene netted torn fiber which is taken as a filler is arranged between adjacent insulation wire cores and between the adjacent insulation wire cores and the inner polyvinyl chloride lining layer, the cable core and the filler are lapped by a lapping layer, and melting temperature of the filler and the wrapping layer is greater than the highest rated operation temperature of the cable. The irrigation cable has properties of waterproof performance, weather-aging-proof performance, excellent mechanical performance and good supporting effect, roundness of the cable is guaranteed, and the irrigation cable is suitable for a high temperature and poor heat radiation environment.
Description
Technical field
The present invention relates to cable technology field, relate in particular to a kind of cable for irrigation.
Background technology
Water-saving irrigation is the Agriculture strategy measure of taking according to national conditions, the water-saving irrigation device that agricultural irrigation needs, such as sprinkling irrigation equipment, micro-irrigation equipment, low pressure water conveyance pipeline equipment etc. mostly need fixed power source as power, the large region of irrigated area particularly, for power consumption equipments such as motor, need to be connected with fixed power source, therefore need long cable as transmission line, because cable transmission line is operated in the place that ground is coarse and moist, have water, easily wearing and tearing cause the damage from skin to internal layer, and cable is easy to cause personal safety accident after damaging.The structure that the cable for irrigation of prior art adopts is the multi-core cable wire with filler, the shortcoming of its existence is, filler mechanical strength is low, easily distortion, high-frequency insulation performance and puncture voltage do not meet the reliability requirement of use, also the own moisture absorption of material that has is poor, corrosion-resistant, after using, easily shrink and corrosion, particularly in humidity, immersion and corrosive occasion, cable is easily out of shape, can not guarantee Stability Analysis of Structures and the profile rounding of cable, affect dependability and the useful life of cable.The also feature such as, moistureproof and waterproof wear-resisting with meeting, good mechanical property of the selection of cable material, meets the requirement of the environment for use of cable in addition.
Summary of the invention
Object of the present invention is exactly the problems referred to above that exist for solving prior art, and a kind of cable for irrigation is provided; Compact conformation, good stability, the mechanical performance of waterproof, weather-resistant and excellence is good, and support effect is good, the rounding of assurance cable, is applicable to compared with high ambient temperature and the bad operational environment that dispels the heat.
The technical scheme of technical solution problem of the present invention is:
A kind of cable for irrigation, comprise the cable core at center, outer field external sheath layer, described cable core is by some insulated wire cores stranded compositions, external sheath layer adopts polyurethane elastomer to make, between described cable core and polyurethane elastomer external sheath layer, be extruded with successively from inside to outside polyvinyl chloride inner covering, aluminum plastic composite belt longitudinal bag screen, the insulating barrier that described insulated wire cores comprises conductor and is extruded in conductor outer surface, the nylon external insulation layer that described insulating barrier comprises polyvinyl chloride inner insulating layer and is extruded in polyvinyl chloride inner insulating layer outer surface; Between adjacent some insulated wire cores and between adjacent insulated wire cores and polyvinyl chloride inner covering, be provided with polypropylene mesh split fibre as filler, described cable core and filler adopt lapping layer wrapped, and the melt temperature of described filler and lapping layer is determined working temperature higher than cable maximum amount.
Described conductor is naked copper or zinc-plated stranded conductor, according to pliability, adjust stranded filament diameter and radical.
Described polyvinyl chloride inner covering adopts 90 ℃ of pvc materials to make.
Described insulating barrier adopts polyvinyl chloride inner insulating layer and nylon external insulation layer double-layer coextrusion method to make, and polyvinyl chloride inner insulating layer adopts 90 ℃ of polyvinyl chloride insulation materials, and outer insulating material adopts nylon sheath wire material.
Described external sheath layer adopts polyurethane elastomer material, and it is peripheral that described external sheath layer utilizes extruder to be extruded in aluminium-plastic tape screen by extrusion process, and the screw slenderness ratio of described extruder is 25:1～30:1, and compression ratio is 3:1.
Described polypropylene mesh split fibre is realized by following steps:
1) utilize extrusion molding that pp material is obtained to polypropylene film through extrusion molding;
2) polypropylene film is stretched large molecule is orientated along draw direction through single pull, make draw direction intensity increase,, stretched vertically direction strength decreased;
3) polypropylene film is opened fibre by broken fine devices such as porcupine roller or discaling rolls;
4) through physics, chemistry or mechanism, make out slim film further be separated into fiber mesh material or continuous strand or long filament.The polypropylene mesh split fibre filler that the method is produced is compared with common polypropylene rope filler, has that high, the resistance to moisture absorption of hot strength is strong, light weight is soft and the characteristic such as high resilience.
Beneficial effect of the present invention:
1. compact conformation of the present invention, good stability, cable jacket adopts polyurethane elastomer material, the mechanical performance of waterproof, weather-resistant and excellence is good, adopt polypropylene mesh split fibre as filler, cable core and filler adopt lapping layer wrapped, and the melt temperature of filler and lapping layer is determined working temperature higher than cable maximum amount, and whole cable intensity is good, cable roundness is good, is applicable to compared with high ambient temperature and the bad operational environment that dispels the heat.
2. described in, cable shield adopts the aluminium-plastic tape of vertical packet form, and shield effectiveness is high, and vertical bag shielding construction can be brought into play the maximum work use of aluminium-plastic tape simultaneously, makes cable shield performance better.
3. polyvinyl chloride inner insulating layer is high temperature resistant and aging, and protection core is injury-free, extend cable useful life, and the nylon sheath wire material of nylon external insulation layer guarantees the self-lubricating property between cable core, improves the maximum operating temperature of conductor.
4. polypropylene mesh split fibre is after method of the present invention is manufactured, and high, the resistance to moisture absorption of hot strength is strong, light weight is soft, good springiness.
5. pair insulated wire cores is through double-layer coextrusion processes, and efficiency is high, energy consumption is low, avoided aliquation between restrictive coating and insulating barrier, wrinkling, come unstuck and core and the not tight defect of insulated combination.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein, 1, conductor, 2, filler, 3, polyvinyl chloride inner insulating layer, 4, nylon external insulation layer, 5, polyvinyl chloride inner covering, 6, screen, 7, external sheath layer, 8, lapping layer.
Embodiment
In order to understand better the present invention, below in conjunction with accompanying drawing, explain in detail embodiments of the present invention.
As shown in Figure 1, a kind of cable for irrigation, the cable core that comprises center, outer field external sheath layer 7, described cable core is by some insulated wire cores stranded compositions, external sheath layer 7 adopts polyurethane elastomer to make, between described cable core and outer field polyurethane elastomer external sheath layer 7, be extruded with successively from inside to outside polyvinyl chloride inner covering 5, aluminum plastic composite belt longitudinal bag screen 6, described insulated wire cores comprises conductor 1, and the insulating barrier that is extruded in conductor 1 outer surface, described insulating barrier comprises polyvinyl chloride inner insulating layer 3, and the nylon external insulation layer 4 that is extruded in polyvinyl chloride inner insulating layer 3 outer surfaces, between adjacent insulated wire cores, and the non-absorbent material polypropylene mesh split fibre that is provided with adhesion insulated wire cores between adjacent insulated wire cores and polyvinyl chloride inner covering 5 is as filler, described cable core and filler adopt lapping layer 8 wrapped, and the melt temperature of filler and lapping layer is determined working temperature higher than cable maximum amount.Described filler and lapping layer 8 are determined not melting under working temperature in cable maximum amount, by the supporting role of filler 2, the rounding of assurance cable.
The manufacture method of described polypropylene mesh split fibre, comprises the following steps:
1) utilize extrusion molding that pp material is obtained to polypropylene film through extrusion molding;
2) polypropylene film is stretched large molecule is orientated along draw direction through single pull, make draw direction intensity increase,, stretched vertically direction strength decreased;
3) polypropylene film is opened fibre by broken fine devices such as porcupine roller or discaling rolls;
4) through physics, chemistry or mechanism, make out slim film further be separated into fiber mesh material or continuous strand or long filament.The polypropylene mesh split fibre filler that the method is produced is compared with common polypropylene rope filler, has that high, the resistance to moisture absorption of hot strength is strong, light weight is soft and the characteristic such as high resilience.
Described cable core and filler adopt non-absorbent material film strip lapping layer 8 wrapped, and mylar tape lapping layer performance stable for extended periods of time, effectively guarantees product insulation resistance.Polyester film lapping layer 8 energy barrier metal ions are to external migration, and this is conducive to push away the Heat Ageing of slow sheath material.It is many that the thermal lifetime of this mylar band is also grown than crosslinked polyethylene.
Insulating barrier adopts polyvinyl chloride inner insulating layer 3 and nylon external insulation layer 4 double-layer coextrusion methods to make, and inner insulating layer 3 adopts 90 ℃ of polyvinyl chloride insulation materials, and outer insulating material 4 adopts nylon sheath wire material.By time processing, realize double-layer coextrusion, do not need repeatedly to regulate aborning the link of core core shift, guaranteed the accurate of insulation thickness, simultaneously extrusion way just can be avoided owing to extruding while separately carrying out that primary insulation surface is polluted for twice and the problem such as damage, make to insulate and combine closely between face mutually two-layer, guarantee double-insulated concentricity, improve the quality of products.Reduced processing intensity, guaranteed the compactness between double-decker, made the electric property of cable have more advantage.
Conductor 1 is naked copper or zinc-plated stranded conductor, according to pliability needs, adjust stranded filament diameter and radical, guarantees the Stability Analysis of Structures of conductor 1.
Described polyvinyl chloride inner covering 5 adopts 90 ℃ of pvc materials to make.Possess excellent weatherability, mechanical performance.Prevent that insulating barrier is by subsequent handling scratch.
Screen 6 adopts aluminium-plastic tape, and shield effectiveness is high, and vertical bag shielding construction can be brought into play the maximum work use of aluminium-plastic tape simultaneously, makes cable shield performance better.
Oversheath 7 adopts polyurethane elastomer material, utilizes extruder to be extruded in aluminium-plastic tape screen 6 peripheries by squash type technique, and the screw slenderness ratio of described extruder is controlled at 25:1～30:1, and compression ratio is 3:1.Melt temperature narrow range due to polyurethane elastomer, the minor variations of temperature all can cause the sharply variation of viscosity, in extrusion process, expressing technique is not easy to control, and polyurethane elastomer has high elastic modulus and tensile strength, be only suitable for extruding of thin-walled sheath, be generally merely able to realize extruding of small dimension.And adopt the screw rod of this specification of the present invention, and can carry out large specification to extrude, improved production efficiency.
Cable shield of the present invention adopts the aluminium-plastic tape of vertical packet form, and shield effectiveness is high, and vertical bag shielding construction can be brought into play the maximum work use of aluminium-plastic tape simultaneously, makes cable shield performance better.Cable jacket adopts polyurethane elastomer material, has waterproof, weather-resistant and excellent mechanical property.Polyvinyl chloride inner insulating layer 3 materials are 90 ℃ of polyvinyl chloride insulation materials, high temperature resistant and aging, and protection core is injury-free, extend cable useful life.The nylon sheath wire material of nylon external insulation layer 4 guarantees the self-lubricating property between cable core, also can improve the maximum operating temperature of conductor simultaneously.Filler polypropylene mesh split fibre, has not only guaranteed the appearance requirement of cable rounding, and material itself has the feature of excellent waterproof and dampproof, good mechanical property.Each of above-mentioned material layer structure organically combines and makes the characteristics such as whole cable for irrigation possesses shock-resistant cracking, UV resistant, resistance to high/low temperature, wear-resisting, stability is high.
Although above-mentioned, by reference to the accompanying drawings the embodiment of invention is described; but be not limiting the scope of the invention; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (6)
1. a cable for irrigation, the cable core that comprises center, outer field external sheath layer, it is characterized in that, described cable core is by some insulated wire cores stranded compositions, external sheath layer adopts polyurethane elastomer to make, between described cable core and polyurethane elastomer external sheath layer, be extruded with successively from inside to outside polyvinyl chloride inner covering, aluminum plastic composite belt longitudinal bag screen, described insulated wire cores comprises conductor, and the insulating barrier that is extruded in conductor outer surface, described insulating barrier comprises polyvinyl chloride inner insulating layer, and the nylon external insulation layer that is extruded in polyvinyl chloride inner insulating layer outer surface, between adjacent some insulated wire cores and between adjacent insulated wire cores and polyvinyl chloride inner covering, be provided with polypropylene mesh split fibre as filler, described cable core and filler adopt lapping layer wrapped, and the melt temperature of described filler and lapping layer is determined working temperature higher than cable maximum amount.
2. cable for irrigation as claimed in claim 1, is characterized in that, described conductor is naked copper or zinc-plated stranded conductor, according to pliability, adjust stranded filament diameter and radical.
3. cable for irrigation as claimed in claim 1, is characterized in that, described polyvinyl chloride inner covering adopts 90 ℃ of pvc materials to make.
4. cable for irrigation as claimed in claim 1, it is characterized in that, described insulating barrier adopts polyvinyl chloride inner insulating layer and nylon external insulation layer double-layer coextrusion method to make, and polyvinyl chloride inner insulating layer adopts 90 ℃ of polyvinyl chloride insulation materials, and outer insulating material adopts nylon sheath wire material.
5. cable for irrigation as claimed in claim 1, it is characterized in that, described external sheath layer 7 adopts polyurethane elastomer material, described external sheath layer utilizes extruder to be extruded in aluminium-plastic tape screen 6 peripheries by extrusion process, the screw slenderness ratio of described extruder is 25:1～30:1, and compression ratio is 3:1.
6. cable for irrigation as claimed in claim 1, is characterized in that, described polypropylene mesh split fibre is realized by following steps:
1) utilize extrusion molding that pp material is obtained to polypropylene film through extrusion molding;
2) polypropylene film is stretched large molecule is orientated along draw direction through single pull, draw direction intensity is increased, stretched vertically direction strength decreased;
3) polypropylene film is opened fibre by porcupine roller or the broken fine device of discaling roll;
4) through physics, chemistry or mechanism, make out slim film further be separated into fiber mesh material or continuous strand or long filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310584901.5A CN103606404A (en) | 2013-11-20 | 2013-11-20 | Irrigation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310584901.5A CN103606404A (en) | 2013-11-20 | 2013-11-20 | Irrigation cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103606404A true CN103606404A (en) | 2014-02-26 |
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ID=50124621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310584901.5A Pending CN103606404A (en) | 2013-11-20 | 2013-11-20 | Irrigation cable |
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| Country | Link |
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| CN (1) | CN103606404A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282366A (en) * | 2014-10-21 | 2015-01-14 | 常熟市鑫华电子科技有限公司 | High-flexibility cable for junction box |
| CN104392779A (en) * | 2014-11-21 | 2015-03-04 | 安徽顺驰电缆有限公司 | Wearable, high-temperature-resistant, tension-resistant and environmentally-friendly cable of railway locomotive |
| CN104835586A (en) * | 2015-03-28 | 2015-08-12 | 安徽中天电缆有限公司 | Low temperature resistant tensile power cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1153945A (en) * | 1997-08-06 | 1999-02-26 | Furukawa Electric Co Ltd:The | Cable |
| CN101140815A (en) * | 2007-10-26 | 2008-03-12 | 沈阳屏蔽特缆有限公司 | Electric wire and cable for flexible composite drag links and manufacturing process thereof |
| CN201927379U (en) * | 2011-03-07 | 2011-08-10 | 山东华凌电缆有限公司 | Cable for irrigation |
| CN102347112A (en) * | 2011-06-28 | 2012-02-08 | 江苏远洋东泽电缆股份有限公司 | Cable manufacturing method for ensuring roundness of marine cable and easy peeling of sheath |
-
2013
- 2013-11-20 CN CN201310584901.5A patent/CN103606404A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1153945A (en) * | 1997-08-06 | 1999-02-26 | Furukawa Electric Co Ltd:The | Cable |
| CN101140815A (en) * | 2007-10-26 | 2008-03-12 | 沈阳屏蔽特缆有限公司 | Electric wire and cable for flexible composite drag links and manufacturing process thereof |
| CN201927379U (en) * | 2011-03-07 | 2011-08-10 | 山东华凌电缆有限公司 | Cable for irrigation |
| CN102347112A (en) * | 2011-06-28 | 2012-02-08 | 江苏远洋东泽电缆股份有限公司 | Cable manufacturing method for ensuring roundness of marine cable and easy peeling of sheath |
Non-Patent Citations (1)
| Title |
|---|
| 师昌绪: "《材料科学与工程手册（上卷）第2篇 制备和加工篇》", 31 December 2004 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282366A (en) * | 2014-10-21 | 2015-01-14 | 常熟市鑫华电子科技有限公司 | High-flexibility cable for junction box |
| CN104392779A (en) * | 2014-11-21 | 2015-03-04 | 安徽顺驰电缆有限公司 | Wearable, high-temperature-resistant, tension-resistant and environmentally-friendly cable of railway locomotive |
| CN104835586A (en) * | 2015-03-28 | 2015-08-12 | 安徽中天电缆有限公司 | Low temperature resistant tensile power cable |
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Application publication date: 20140226 |