CN112310906A - Heat-resistant insulating MPP power cable pipe and preparation method thereof - Google Patents
Heat-resistant insulating MPP power cable pipe and preparation method thereof Download PDFInfo
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- CN112310906A CN112310906A CN202011185582.7A CN202011185582A CN112310906A CN 112310906 A CN112310906 A CN 112310906A CN 202011185582 A CN202011185582 A CN 202011185582A CN 112310906 A CN112310906 A CN 112310906A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
- H02G3/0412—Heat or fire protective means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a heat-resistant insulating MPP power cable pipe and a preparation method thereof, and relates to the technical field of cable pipe processing, the heat-resistant insulating MPP power cable pipe comprises an inner pipeline, wherein an insulating net is sleeved on the outer surface of the inner pipeline, a lubricating layer is coated on the inner wall of the inner pipeline, a containing groove is formed in one side of the insulating net, a wire is fixedly connected to one end of the insulating net, an MPP outer pipeline is sleeved on the outer sides of the inner pipeline and the containing groove, and the MPP outer pipeline comprises the following raw materials in parts by weight: 60-80 parts of isotactic polypropylene resin, 5-10 parts of block copolymerization polypropylene, 3-5 parts of olefin block copolymerization elastomer OBC, 0.5-2 parts of heat-resistant insulating orange master batch and 10-20 parts of ultrahigh molecular weight polyethylene resin. The MPP outer pipeline on the outermost side has stronger heat resistance and external pressure resistance, the inner pipeline on the innermost side has stronger high temperature resistance, and the MPP outer pipeline has good flame-proof capability and can avoid fire spreading when a fire is started.
Description
Technical Field
The invention relates to the technical field of cable pipe processing, in particular to a heat-resistant insulating MPP power cable pipe and a preparation method thereof.
Background
MPP pipe also is called MPP power cable protection pipe, divide into excavation type and non-excavation type, MPP non-excavation pipe is called MPP push pipe or dragging pipe again, MPP pipe adopts modified polypropylene to be main raw and other materials, has high temperature resistant, the characteristics of external pressure resistant, be applicable to the well low voltage transmission line cable calandria tubular product below 10KV, compare with traditional "grooving buried pipe method", non-excavation power pipe engineering more adapts to current environmental protection requirement, the length of MPP pipe is mostly 6m-14 m.
Chinese patent discloses a rose crystal form nano calcium carbonate multidimensional reinforced MPP cable protection tube material and a preparation method thereof (publication number: CN107446244B), wherein the patent material comprises the following components in parts by weight: PP resin: 30-100 parts; rose crystal form nano calcium carbonate: 10-70 parts; coupling agent: 1-5 parts; a toughening agent: 5-15 parts; a compatilizer: 3-10 parts; lubricant: 1-5 parts; dispersing agent: 2-5 parts; 0.5-2 parts of antioxidant.
Current MPP cable protection pipe is the individual layer material mostly, leads to each item performance of tubular product all to receive restriction such as thickness and material, and simultaneously when using, cable protection pipe is buried underground mostly, catches fire at the cable after, and is inconvenient to put out a fire, so heat-resistant and fire-proof ability to tubular product have certain demand, simultaneously when using, need prevent to pile up a large amount of static in the pipeline is inside, lead to pipeline or cable damage, the problem of conflagration even takes place.
Disclosure of Invention
In order to overcome the technical problems that most of the existing MPP cable protection pipes are made of single-layer materials, so that all performances of pipes are limited by thickness, materials and the like, and meanwhile, most of the existing MPP cable protection pipes are buried underground when the existing MPP cable protection pipes are used, and the pipes are inconvenient to extinguish a fire after a cable catches fire, so that the pipes have certain requirements on heat resistance and flame resistance, and meanwhile, a large amount of static electricity accumulated in the pipes needs to be prevented from causing damage to the pipes or the cables and even causing fire, the invention aims to provide the heat-resistant insulating MPP power cable pipe and the preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a heat-resistant insulating MPP power cable pipe comprises an inner pipeline, wherein an insulating net is sleeved on the outer surface of the inner pipeline, a lubricating layer is coated on the inner wall of the inner pipeline, an accommodating groove is formed in one side of the insulating net, a lead is fixedly connected to one end of the insulating net, an MPP outer pipeline is sleeved on the outer sides of the inner pipeline and the accommodating groove, connecting holes are formed in two ends of the MPP outer pipeline, and the lead penetrates out of the connecting holes;
the MPP outer pipeline comprises the following raw materials in parts by weight: 60-80 parts of isotactic polypropylene resin, 5-10 parts of block copolymerization polypropylene, 3-5 parts of olefin block copolymerization elastomer OBC, 0.5-2 parts of heat-resistant insulating orange master batch and 10-20 parts of ultrahigh molecular weight polyethylene resin;
the inner pipeline comprises the following raw materials in parts by weight: 50-65 parts of modified polypropylene, 3-4 parts of compatilizer, 2-3 parts of stabilizer and 1.5-3 parts of flame retardant.
As a further scheme of the invention: the compatilizer is grafted by maleic anhydride.
The invention also discloses a preparation method of the heat-resistant insulating MPP power cable pipe, which comprises the following steps:
the method comprises the following steps: physically blending and modifying isotactic polypropylene resin, block copolymerization polypropylene, olefin block copolymerization elastomer OBC, heat-resistant insulating orange master batches and ultrahigh molecular weight polyethylene resin, heating, mixing and stirring to obtain a raw material A; heating and mixing the modified polypropylene, the compatilizer, the stabilizer and the flame retardant, and stirring to obtain a raw material B; heating and stirring water-soluble polyalkylene glycol to obtain a raw material C;
step two: pouring the raw material A into an extruder, heating the raw material by the extruder, extruding the heated raw material into a mold, cooling and molding to obtain an MPP outer pipeline, forming connecting holes at two ends of the MPP outer pipeline, pouring the raw material B into the extruder, heating the raw material by the extruder, extruding the heated raw material into the mold, cooling and molding to obtain an inner pipeline;
step three: uniformly spraying the raw material C into the inner wall of the inner pipeline, cooling and forming to obtain a lubricating layer, uniformly spraying the raw material C into the inner wall of the inner pipeline, cooling and forming to obtain the lubricating layer, coating waterproof adhesive on the outer side of the inner pipeline to adhere an insulating net, then cutting a containing groove at one end of the insulating net, and containing a lead in the containing groove;
step four: placing the MPP outer pipeline on one side of the assembling machine, smearing the adhesive on the inner wall of the MPP outer pipeline, then placing the inner pipeline on the other side of the assembling machine, and then starting the assembling machine to embed the inner pipeline into the MPP outer pipeline;
step five: and (3) picking out the lead from the connecting hole, removing the adhesive on the edge of the connecting part of the inner pipeline and the MPP outer pipeline, filling the connecting hole by using the leftover material of the raw material A, and obtaining a product after the adhesive and the raw material A are solidified.
As a further scheme of the invention: the assembling machine comprises a base plate, wherein a driving frame is screwed on the upper side of the base plate, one end of the upper surface of the driving frame is fixedly connected with a first driving motor, the lower surface of the driving frame is connected with a driving plate in a sliding manner, one side of the driving plate is fixedly connected with a second driving motor, the other side of the driving plate is rotatably connected with a three-jaw chuck, and the output end of the second driving motor is fixedly connected with the three-jaw chuck;
one side of the upper surface of the base plate is connected with a first sliding plate in a sliding mode, the other side of the upper surface of the base plate is connected with a second sliding plate in a sliding mode, the upper surface of the base plate is positioned between the first sliding plate and the second sliding plate in a sliding mode and is connected with a heating ring in a sliding mode, one sides of the lower surfaces of the first sliding plate and the second sliding plate are fixedly connected with first pulleys, the upper surface of the first sliding plate is connected with a pipeline sliding device in a threaded mode, the upper surface of the second sliding plate is connected with a first pipeline fixing device in a threaded mode, and the upper side, close to the first pipeline fixing device, of;
a feeding box is arranged on one side of the base plate, and a coating arm is fixedly connected to the top end of the interior of the feeding box.
As a further scheme of the invention: the lower side of the base plate, which is close to the first sliding plate and the second sliding plate, is rotatably connected with a first screw rod, one side of the base plate, which is close to the first screw rod, is fixedly connected with a sliding rod, one side of the base plate, which is close to the first screw rod, is fixedly connected with a third driving motor, the output end of the third driving motor is fixedly connected with one end of the first screw rod, one end of the lower surfaces of the first sliding plate and the second sliding plate, which is far away from the first pulley, is fixedly connected with threaded plates, one side of the lower surfaces of the first sliding plate and the second sliding plate, which is close to the threaded plates, is fixedly connected with a sleeve, the threaded plates are respectively in threaded connection with the two groups of first screw rods, and the sleeves are respectively sleeved on.
As a further scheme of the invention: the pipeline slider is provided with three groups, and the pipeline slider all includes the third hydraulic stem, the frame is accomodate to the top fixedly connected with of third hydraulic stem, the inside of accomodating the frame is rotated and is connected with the commentaries on classics roller, first pipeline fixer and second pipeline fixer are provided with three groups and two sets of respectively, and first pipeline fixer and second pipeline fixer staggered arrangement, first pipeline fixer and second pipeline fixer all include the fourth hydraulic stem, and the equal fixedly connected with of output of fourth hydraulic stem is convex fixed to be detained.
As a further scheme of the invention: the inside of driving rack is rotated and is connected with the second spiral plate, be connected through synchronous belt drive between first driving motor's the output and the second spiral plate, the inside downside fixedly connected with cylinder that is close to the heating ring of base plate, the outside cover of cylinder is equipped with the mount, the inner wall spiro union of mount and base plate, the lower fixed surface of heating ring is connected with the second pulley, the output and the heating ring spiro union of cylinder, and the upper surface of base plate offers and is used for the gliding spout of cylinder output.
As a further scheme of the invention: the interior of the feeding box is provided with a storage bin, the exterior of the interior of the feeding box, which is close to the storage bin, is fixedly connected with an electric heater, the lower side of the interior of the feeding box, which is close to the storage bin, is fixedly connected with a fourth driving motor, the bottom end of the interior of the storage bin is rotatably connected with a stirring rod, the output end of the fourth driving motor is fixedly connected with the stirring rod, the coating arm comprises a first connecting block in threaded connection with the feeding box, the interior of the first connecting block is rotatably connected with a first hydraulic rod, one side of the first connecting block is fixedly connected with a first rotating motor, the output end of the first hydraulic rod is fixedly connected with a second connecting block, the interior of the second connecting block is rotatably connected with a second hydraulic rod, one side of the second connecting block is fixedly connected with a second rotating motor, the output end of the first rotating motor is fixedly connected with the first hydraulic rod, and the output end of, the output end of the second hydraulic rod is fixedly connected with a fixing ring, the side face of the fixing ring is fixedly connected with a plurality of electric telescopic rods, the output ends of the electric telescopic rods all penetrate through the fixing ring, and the output ends of the electric telescopic rods are fixedly connected with a material brush.
As a further scheme of the invention: the working steps of the assembling machine are as follows:
starting two groups of third driving motors, wherein the two groups of third driving motors respectively drive two groups of first screw rods to rotate so as to respectively drive a first sliding plate and a second sliding plate to slide out to the outer sides of the base plate and the driving frame along the sliding rods through a first pulley, then placing an MPP outer pipeline in a first pipeline fixer on the second sliding plate, placing an inner pipeline in a pipeline slider on the first sliding plate, then starting the third driving motors again, moving the first sliding plate and the second sliding plate to the inner sides of the base plate and the driving frame, then starting the first driving motors, driving the second screw plates to rotate through synchronous belts by the first driving motors so as to drive the driving plate to move, and starting the three-jaw chuck to fix the inner pipeline after the driving plate drives the three-jaw chuck to move to the outer side of one end of the inner pipeline;
pouring an adhesive into a storage bin, starting an electric heater to heat the adhesive, starting a fourth driving motor to drive a stirring rod to stir the adhesive, then starting an electric telescopic rod to take a material brush out of a fixing ring, changing the angles of a first hydraulic rod and a second hydraulic rod by starting a first rotating motor and a second rotating motor, changing the position of the fixing ring by starting the first hydraulic rod and the second hydraulic rod, adjusting the fixing ring to the inside of the storage bin, adhering the material brush with the adhesive, then starting a coating arm again to take the material brush to the outer side of an inner pipeline, then starting the first driving motor again, driving the inner pipeline to be embedded into the MPP outer pipeline through a driving plate and a three-jaw chuck, starting the coating arm to coat the adhesive on the outer side of the inner pipeline when the inner pipeline moves, starting the second driving motor to drive the inner pipeline to rotate in the MPP outer pipeline after assembly is completed, the bonding agent is evenly distributed among the inner pipeline, the insulating net and the MPP outer pipeline, then the conducting wire is picked out from a connecting hole of the MPP outer pipeline, and then the connecting hole is sealed by using raw materials.
The invention has the beneficial effects that:
1. the MPP cable pipes are arranged in a layered mode, the outer MPP pipeline on the outermost side is higher in heat resistance and external pressure resistance, the inner pipeline on the innermost side is higher in high temperature resistance and has good flame-retardant capability, fire expansion can be avoided when a fire breaks out, meanwhile, the inner pipeline is coated with the lubricating layer, friction force between the inner pipeline and a cable can be reduced when the cable is installed, meanwhile, the insulating net is arranged in the middle of the pipeline, static electricity in the pipeline can be led out, and static electricity is prevented from being accumulated in the pipeline.
2. When the MPP pipe is prepared, an outer MPP pipeline and an inner MPP pipeline need to be assembled, when the MPP pipe is assembled, two groups of pipelines need to be coated with an adhesive, so that the integrity and firmness of a product can be improved, and when the MPP pipe is assembled, all parts in the pipelines can be synchronously processed, so that the production efficiency can be improved, and after the MPP pipe is assembled, a lead can be picked out from the inside of the pipeline, and the connecting holes can be filled, so that the pipelines can be integrated, and the problem of corrosion in the pipeline is avoided.
3. The assembling machine is simple in structure and convenient to operate and control, the inner pipeline can be driven to move and rotate through the three-jaw chuck and the second driving motor, the rotating roller is arranged inside the pipeline slider, friction force generated when the inner pipeline moves can be reduced, damage to the surface of the inner pipeline is prevented, meanwhile, the problem of premature solidification of an adhesive during assembling can be prevented through the heating ring, and on the other hand, the adhesive can be smeared on the surface of the inner pipeline when the inner pipeline is moved through the feeding box and the coating arm, so that the inner pipeline, the insulating net and the MPP outer pipeline can be conveniently bonded and connected.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a partial exploded view of a cable duct according to the present invention;
FIG. 2 is a front view of the assembling machine of the present invention;
FIG. 3 is a partial top cross-sectional view of a substrate in accordance with the present invention;
FIG. 4 is a side cross-sectional view of the duct slider and the first slider plate of the present invention;
FIG. 5 is a view showing the movement of the three-jaw chuck according to the present invention;
FIG. 6 is a view showing the movement of a heating ring according to the present invention;
FIG. 7 is a side cross-sectional view of the upper box of the present invention;
fig. 8 is a front view of a paint arm of the present invention.
In the figure: 1. an inner conduit; 2. an insulating mesh; 3. a receiving groove; 4. a lubricating layer; 5. an MPP outer pipeline; 6. connecting holes; 7. a wire; 8. a substrate; 9. a driving frame; 10. a first drive motor; 11. a drive plate; 12. a second drive motor; 13. a three-jaw chuck; 14. a first sliding plate; 15. a second sliding plate; 16. a first pulley; 17. a duct slider; 18. a first pipe holder; 19. a second pipe holder; 20. a heating ring; 21. feeding a material box; 22. a coating arm; 23. a third drive motor; 24. a first screw rod; 25. a slide bar; 26. a sleeve; 27. a thread plate; 28. a second spiral plate; 29. a synchronous belt; 30. a fixed mount; 31. an electric heater; 32. a storage bin; 33. a fourth drive motor; 34. a stirring rod; 35. a cylinder; 221. a first connection block; 222. a first rotating electrical machine; 223. a first hydraulic lever; 224. a second connecting block; 225. a second rotating electrical machine; 226. a second hydraulic rod; 227. a fixing ring; 228. an electric telescopic rod; 229. material brushing; 171. a third hydraulic lever; 172. a storage rack; 173. and (5) rotating the roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a heat-resistant insulating MPP power cable pipe includes an inner pipe 1, an insulating mesh 2 is sleeved on an outer surface of the inner pipe 1, a lubricating layer 4 is coated on an inner wall of the inner pipe 1, an accommodating groove 3 is formed in one side of the insulating mesh 2, a lead 7 is fixedly connected to one end of the insulating mesh 2, an MPP outer pipe 5 is sleeved on outer sides of the inner pipe 1 and the accommodating groove 3, connecting holes 6 are formed in two ends of the MPP outer pipe 5, and the lead 7 penetrates out of the connecting holes 6;
the MPP outer pipeline 5 comprises the following raw materials in parts by weight: 70 parts of isotactic polypropylene resin, 7 parts of block copolymerization polypropylene, 4 parts of olefin block copolymerization elastomer OBC, 1.5 parts of heat-resistant insulating orange master batch and 14 parts of ultrahigh molecular weight polyethylene resin;
the inner pipeline 1 comprises the following raw materials in parts by weight: 60 parts of modified polypropylene, 3.5 parts of compatilizer, 2 parts of stabilizer and 2.5 parts of flame retardant.
The inner pipeline 1 is stronger in high temperature resistance and has good flame retardant capability, the lubricating layer 4 can reduce friction force between the lubricating layer and a cable when the cable is assembled, and the insulating net 2 can enable static electricity inside the pipeline to be transmitted out of the pipeline through the conducting wire 7.
The preparation method comprises the following steps:
the method comprises the following steps: taking 70 parts of isotactic polypropylene resin, 7 parts of block copolymerization polypropylene, 4 parts of olefin block copolymerization elastomer OBC, 1.5 parts of heat-resistant insulating orange master batch and 14 parts of ultrahigh molecular weight polyethylene resin for physical blending modification, then heating, mixing and stirring to obtain a raw material A; heating and mixing 60 parts of modified polypropylene, 3.5 parts of compatilizer, 2 parts of stabilizer and 2.5 parts of flame retardant, and stirring to obtain a raw material B; heating and stirring water-soluble polyalkylene glycol to obtain a raw material C;
step two: pouring the raw material A into an extruder, heating the raw material by the extruder, extruding the heated raw material into a mold, cooling and molding to obtain an MPP outer pipeline 5, wherein the conventional performance of the MPP outer pipeline 5 meets the requirement of DLT802.7-2010, the Vicat softening point reaches 153-157 ℃, connecting holes 6 are formed in two ends of the MPP outer pipeline 5, pouring the raw material B into the extruder, heating the raw material by the extruder, extruding the heated raw material into the mold, and cooling and molding to obtain an inner pipeline 1;
step three: uniformly spraying a raw material C into the inner wall of the inner pipeline 1 to obtain a lubricating layer 4 after cooling forming, uniformly spraying the raw material C into the inner wall of the inner pipeline 1 to obtain the lubricating layer 4 after cooling forming, coating a waterproof adhesive on the outer side of the inner pipeline to adhere an insulating net 2, then cutting a containing groove 3 at one end of the insulating net 2, and containing a lead 7 in the containing groove 3;
step four: placing the MPP outer pipeline 5 at one side of an assembling machine, smearing an adhesive on the inner wall of the MPP outer pipeline 5, then placing the inner pipeline 1 at the other side of the assembling machine, and then starting the assembling machine to embed the inner pipeline 1 into the MPP outer pipeline 5;
step five: and (3) picking out the lead 7 from the connecting hole 6, removing the adhesive on the edge of the connecting part of the inner pipeline 1 and the MPP outer pipeline 5, filling the connecting hole 6 with leftover materials of the raw material A, and obtaining a product after the adhesive and the raw material A are solidified.
When the equipment, the adhesive all need be paintd to two sets of pipelines to can improve the wholeness and the fastness of product, and when the equipment, each part in the pipeline can be processed in step, thereby can improve production efficiency, and after the equipment, wire 7 can follow the inside processing of choosing of pipeline, and connecting hole 6 can be filled the processing, thereby can be with the pipeline integration, avoid the inside problem of corroding that appears of pipeline.
Referring to fig. 2, the assembling machine includes a substrate 8, a driving frame 9 is screwed on the upper side of the substrate 8, one end of the upper surface of the driving frame 9 is fixedly connected with a first driving motor 10, the lower surface of the driving frame 9 is connected with a driving plate 11 in a sliding manner, one side of the driving plate 11 is fixedly connected with a second driving motor 12, the other side of the driving plate 11 is rotatably connected with a three-jaw chuck 13, and the output end of the second driving motor 12 is fixedly connected with the three-jaw chuck 13;
a first sliding plate 14 is connected to one side of the upper surface of the base plate 8 in a sliding manner, a second sliding plate 15 is connected to the other side of the upper surface of the base plate 8 in a sliding manner, a heating ring 20 is connected between the first sliding plate 14 and the second sliding plate 15 in a sliding manner, first pulleys 16 are fixedly connected to one sides of the lower surfaces of the first sliding plate 14 and the second sliding plate 15, a pipeline slider 17 is screwed on the upper surface of the first sliding plate 14, a first pipeline fixer 18 is screwed on the upper surface of the second sliding plate 15, and a second pipeline fixer 19 is screwed on the upper side, close to the first pipeline fixer 18, of the lower surface of the driving frame 9;
a feeding box 21 is arranged on one side of the base plate 8, and a coating arm 22 is fixedly connected to the top end inside the feeding box 21.
The positions of the various components of the assembly machine can be detected by infrared position sensors, and those not described in detail in this specification are well within the skill of those in the art, and those not described in this specification are well within the skill of those in the art.
Referring to fig. 3-4, a first screw rod 24 is rotatably connected to the lower side of the base plate 8 close to the first sliding plate 14 and the second sliding plate 15, a sliding rod 25 is fixedly connected to one side of the base plate 8 close to the first screw rod 24, a third driving motor 23 is fixedly connected to one side of the base plate 8 close to the first screw rod 24, an output end of the third driving motor 23 is fixedly connected to one end of the first screw rod 24, threaded plates 27 are fixedly connected to one ends of the lower surfaces of the first sliding plate 14 and the second sliding plate 15 far from the first pulley 16, sleeves 26 are fixedly connected to one sides of the lower surfaces of the first sliding plate 14 and the second sliding plate 15 close to the threaded plates 27, two sets of threaded plates 27 are respectively in threaded connection with two sets of first screw rods 24, two sets of sleeves 26 are respectively sleeved on the outer sides of two sets of sliding rods 25, three sets of pipeline sliders 17 are provided, and pipeline slider 17 all includes third hydraulic stem 171, the top fixedly connected with of third hydraulic stem 171 accomodates frame 172, the inside of accomodating frame 172 is rotated and is connected with and changes roller 173, first pipeline fixer 18 and second pipeline fixer 19 are provided with three groups and two sets ofly respectively, and first pipeline fixer 18 and second pipeline fixer 19 staggered arrangement, first pipeline fixer 18 and second pipeline fixer 19 all include the fourth hydraulic stem, the equal fixedly connected with convex fixed knot of output of fourth hydraulic stem.
Referring to fig. 5-6, the driving rack 9 is rotatably connected to the second spiral plate 28, the output end of the first driving motor 10 is in transmission connection with the second spiral plate 28 through a synchronous belt 29, the lower side of the substrate 8 close to the heating ring 20 is fixedly connected with a cylinder 35, the outer side of the cylinder 35 is sleeved with a fixing rack 30, the fixing rack 30 is in threaded connection with the inner wall of the substrate 8, the lower surface of the heating ring 20 is fixedly connected with a second pulley, the output end of the cylinder 35 is in threaded connection with the heating ring 20, and the upper surface of the substrate 8 is provided with a sliding groove for the output end of the cylinder 35 to slide.
Referring to fig. 7-8, a bin 32 is disposed inside the upper box 21, an electric heater 31 is fixedly connected to the outside of the interior of the upper box 21 close to the bin 32, a fourth driving motor 33 is fixedly connected to the lower side of the interior of the upper box 21 close to the bin 32, a stirring rod 34 is rotatably connected to the bottom end of the interior of the bin 32, the output end of the fourth driving motor 33 is fixedly connected to the stirring rod 34, the coating arm 22 includes a first connecting block 221 screwed to the upper box 21, a first hydraulic rod 223 is rotatably connected to the interior of the first connecting block 221, a first rotating motor 222 is fixedly connected to one side of the first connecting block 221, a second connecting block 224 is fixedly connected to the output end of the first hydraulic rod 223, a second hydraulic rod 226 is rotatably connected to the interior of the second connecting block 224, a second rotating motor 225 is fixedly connected to one side of the second connecting block 224, the output end of the first rotating motor 222 is fixedly connected to the first hydraulic rod, the output of second rotating electrical machines 225 and second hydraulic stem 226 fixed connection, the solid fixed ring 227 of output fixedly connected with of second hydraulic stem 226, a plurality of electric telescopic handle 228 of the side fixedly connected with of solid fixed ring 227, electric telescopic handle 228 is the XTL100 type, and electric telescopic handle 228's output all runs through solid fixed ring 227, and electric telescopic handle 228's the equal fixedly connected with of output material brush 229.
In the device, each rotating motor can adopt a 70BL-A type, and each driving motor can adopt a 40W-90 type.
The working principle of the assembling machine is as follows: starting two sets of third driving motors 23, the two sets of third driving motors 23 respectively drive two sets of first screws 24 to rotate, thereby respectively driving the first sliding plate 14 and the second sliding plate 15 to slide out to the outer sides of the base plate 8 and the driving frame 9 along the sliding rods 25 through the first pulleys 16, then placing the MPP outer pipe 5 inside the first pipe fixer 18 on the second sliding plate 15, placing the inner pipe 1 inside the pipe slider 17 on the first sliding plate 14, starting the third hydraulic rod 171 and the fourth hydraulic rod, adjusting the heights of the inner pipe 1 and the MPP outer pipe 5, then starting the third driving motor 23 again, moving the first sliding plate 14 and the second sliding plate 15 inside the base plate 8 and the driving frame 9, starting the second pipe fixer 19, fixing the MPP outer pipe 5 inside the first pipe fixer 18, preventing the MPP outer pipe 5 from shaking during assembly, then, starting the first driving motor 10, wherein the first driving motor 10 drives the second spiral plate 28 to rotate through the synchronous belt 29, so as to drive the driving plate 11 to move, after the driving plate 11 drives the three-jaw chuck 13 to move to the outer side of one end of the inner pipeline 1, starting the three-jaw chuck 13 to fix the inner pipeline 1, and then starting the air cylinder 35 to drive the heating ring 20 to slide on the base plate 8 through the second pulley, so as to adjust the heating ring to a position which is parallel to the two groups of pipelines;
pouring an adhesive into a bin 32, starting an electric heater 31 to heat the adhesive, starting a fourth driving motor 33 to drive a stirring rod 34 to stir the adhesive, preventing the adhesive from being solidified, then starting an electric telescopic rod 228 to take a material brush 229 out of a fixed ring 227, changing the angles of a first hydraulic rod 223 and a second hydraulic rod 226 by starting a first rotating motor 222 and a second rotating motor 225, changing the position of the fixed ring 227 by starting the first hydraulic rod 223 and the second hydraulic rod 226 to adjust the fixed ring 227 to the inside of the bin 32, adhering the material brush 229 to the adhesive, then starting the coating arm 22 again to take the material brush 229 to the outside of the inner pipe 1, then starting the first driving motor 10 again to drive the inner pipe 1 to be embedded into the inside of the MPP outer pipe 5 by driving a plate 11 and a three-jaw chuck 13, and reducing the friction force during sliding by a rotating roller 173 when the inner pipe 1 slides, after sliding a distance, the third hydraulic rod 171 at the most lateral side can be started, the containing frame 172 and the rotating roller 173 are taken away from the inner pipeline 1, the driving plate 11 and the three-jaw chuck 13 can pass through conveniently, when the inner pipeline 1 moves, the coating arm 22 is started, the adhesive is coated on the outer side of the inner pipeline 1, the heating ring 20 is started to heat the outer side of the inner pipeline 1, the adhesive is prevented from being solidified, after the assembly is completed, the second driving motor 12 is started to drive the inner pipeline 1 to rotate inside the MPP outer pipeline 5, the adhesive is uniformly distributed between the inner pipeline 1, the insulating net 2 and the MPP outer pipeline 5, the wire 7 is then picked out from the connecting hole 6 of the MPP outer pipeline 5, and then the connecting hole 6 is sealed by using the raw material A.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (9)
1. The heat-resistant insulating MPP power cable pipe is characterized by comprising an inner pipeline (1), wherein an insulating net (2) is sleeved on the outer surface of the inner pipeline (1), a lubricating layer (4) is coated on the inner wall of the inner pipeline (1), a containing groove (3) is formed in one side of the insulating net (2), a wire (7) is fixedly connected to one end of the insulating net (2), an MPP outer pipeline (5) is sleeved on the outer sides of the inner pipeline (1) and the containing groove (3), connecting holes (6) are formed in two ends of the MPP outer pipeline (5), and the wire (7) penetrates out of the connecting holes (6);
the MPP outer pipeline (5) comprises the following raw materials in parts by weight: 60-80 parts of isotactic polypropylene resin, 5-10 parts of block copolymerization polypropylene, 3-5 parts of olefin block copolymerization elastomer OBC, 0.5-2 parts of heat-resistant insulating orange master batch and 10-20 parts of ultrahigh molecular weight polyethylene resin;
the inner pipeline (1) comprises the following raw materials in parts by weight: 50-65 parts of modified polypropylene, 3-4 parts of compatilizer, 2-3 parts of stabilizer and 1.5-3 parts of flame retardant.
2. The heat resistant insulated MPP power cable conduit of claim 1, wherein the compatibilizer is maleic anhydride grafted compatibilizer.
3. A method of making a heat resistant insulated MPP power cable conduit according to any of claims 1-2 comprising the steps of:
the method comprises the following steps: physically blending and modifying isotactic polypropylene resin, block copolymerization polypropylene, olefin block copolymerization elastomer OBC, heat-resistant insulating orange master batches and ultrahigh molecular weight polyethylene resin, heating, mixing and stirring to obtain a raw material A; heating and mixing the modified polypropylene, the compatilizer, the stabilizer and the flame retardant, and stirring to obtain a raw material B; heating and stirring water-soluble polyalkylene glycol to obtain a raw material C;
step two: pouring the raw material A into an extruder, heating the raw material by the extruder, extruding the heated raw material into a mold, cooling and molding to obtain an MPP outer pipeline (5), forming connecting holes (6) at two ends of the MPP outer pipeline (5), pouring the raw material B into the extruder, heating the raw material by the extruder, extruding the heated raw material into the mold, cooling and molding to obtain an inner pipeline (1);
step three: uniformly spraying a raw material C into the inner wall of an inner pipeline (1), cooling and forming to obtain a lubricating layer (4), uniformly spraying the raw material C into the inner wall of the inner pipeline (1), cooling and forming to obtain the lubricating layer (4), coating a waterproof adhesive bonding insulating net (2) on the outer side of the inner pipeline, then cutting a storage groove (3) at one end of the insulating net (2), and storing a lead (7) in the storage groove (3);
step four: placing the MPP outer pipeline (5) on one side of an assembling machine, smearing an adhesive on the inner wall of the MPP outer pipeline (5), then placing the inner pipeline (1) on the other side of the assembling machine, then starting the assembling machine, and embedding the inner pipeline (1) into the MPP outer pipeline (5);
step five: and (3) picking out the lead (7) from the connecting hole (6), removing the adhesive on the edge of the connecting part of the inner pipeline (1) and the MPP outer pipeline (5), filling the connecting hole (6) with the leftover material of the raw material A, and obtaining a product after the adhesive and the raw material A are solidified.
4. The method for preparing the heat-resistant insulating MPP power cable pipe according to claim 3, wherein the assembling machine comprises a base plate (8), a driving frame (9) is screwed on the upper side of the base plate (8), a first driving motor (10) is fixedly connected to one end of the upper surface of the driving frame (9), a driving plate (11) is connected to the lower surface of the driving frame (9) in a sliding manner, a second driving motor (12) is fixedly connected to one side of the driving plate (11), a three-jaw chuck (13) is rotatably connected to the other side of the driving plate (11), and the output end of the second driving motor (12) is fixedly connected with the three-jaw chuck (13);
one side of the upper surface of the base plate (8) is connected with a first sliding plate (14) in a sliding mode, the other side of the upper surface of the base plate (8) is connected with a second sliding plate (15) in a sliding mode, the upper surface of the base plate (8) is located between the first sliding plate (14) and the second sliding plate (15) and is connected with a heating ring (20) in a sliding mode, one sides of the lower surfaces of the first sliding plate (14) and the second sliding plate (15) are fixedly connected with a first pulley (16), the upper surface of the first sliding plate (14) is connected with a pipeline sliding device (17) in a threaded mode, the upper surface of the second sliding plate (15) is connected with a first pipeline fixer (18) in a threaded mode, and the upper side, close to the first pipeline fixer (18), of the lower surface of the driving;
a feeding box (21) is placed on one side of the base plate (8), and a coating arm (22) is fixedly connected to the top end of the interior of the feeding box (21).
5. The method for preparing the MPP power cable pipe with heat resistance and insulation according to claim 4, wherein a first screw rod (24) is rotatably connected to the inner side of the base plate (8) close to the lower sides of the first sliding plate (14) and the second sliding plate (15), a sliding rod (25) is fixedly connected to the inner side of the base plate (8) close to the first screw rod (24), a third driving motor (23) is fixedly connected to the inner side of the base plate (8) close to the first screw rod (24), the output end of the third driving motor (23) is fixedly connected to one end of the first screw rod (24), a threaded plate (27) is fixedly connected to one end of the lower surfaces of the first sliding plate (14) and the second sliding plate (15) far away from the first pulley (16), and a sleeve (26) is fixedly connected to one side of the lower surfaces of the first sliding plate (14) and the second sliding plate (15) close to the threaded plate (27), the two groups of threaded plates (27) are respectively in threaded connection with the two groups of first screw rods (24), and the two groups of sleeves (26) are respectively sleeved on the outer sides of the two groups of sliding rods (25).
6. The method for preparing the heat-resistant insulating MPP power cable pipe according to claim 4, wherein the pipeline sliders (17) are provided with three groups, the pipeline sliders (17) comprise third hydraulic rods (171), the top ends of the third hydraulic rods (171) are fixedly connected with storage frames (172), the storage frames (172) are rotatably connected with rotating rollers (173), the first pipeline retainers (18) and the second pipeline retainers (19) are respectively provided with three groups and two groups, the first pipeline retainers (18) and the second pipeline retainers (19) are staggered, the first pipeline retainers (18) and the second pipeline retainers (19) comprise fourth hydraulic rods, and the output ends of the fourth hydraulic rods are fixedly connected with arc-shaped fixing buckles.
7. The manufacturing method of the heat-resistant insulating MPP power cable tube as claimed in claim 4, wherein a second spiral plate (28) is rotatably connected to the inside of the driving frame (9), the output end of the first driving motor (10) is in transmission connection with the second spiral plate (28) through a synchronous belt (29), a cylinder (35) is fixedly connected to the lower side of the inside of the substrate (8) close to the heating ring (20), a fixing frame (30) is sleeved on the outer side of the cylinder (35), the fixing frame (30) is in threaded connection with the inner wall of the substrate (8), a second pulley is fixedly connected to the lower surface of the heating ring (20), the output end of the cylinder (35) is in threaded connection with the heating ring (20), and a sliding groove for the output end of the cylinder (35) to slide is formed in the upper surface of the substrate (8).
8. The method for preparing the heat-resistant insulating MPP power cable pipe according to claim 4, wherein a bin (32) is opened inside the upper box (21), an electric heater (31) is fixedly connected to the outside of the inside of the upper box (21) close to the bin (32), a fourth driving motor (33) is fixedly connected to the lower side of the inside of the upper box (21) close to the bin (32), a stirring rod (34) is rotatably connected to the bottom end of the inside of the bin (32), the output end of the fourth driving motor (33) is fixedly connected to the stirring rod (34), the coating arm (22) comprises a first connecting block (221) screwed with the upper box (21), a first hydraulic rod (223) is rotatably connected to the inside of the first connecting block (221), a first rotating motor (222) is fixedly connected to one side of the first connecting block (221), the utility model discloses a hydraulic drive device, including first hydraulic stem (223), first connecting block (224), the inside rotation of second connecting block (224) is connected with second hydraulic stem (226), and one side fixedly connected with second rotating electrical machines (225) of second connecting block (224), the output and first hydraulic stem (223) fixed connection of first rotating electrical machines (222), the output and second hydraulic stem (226) fixed connection of second rotating electrical machines (225), the solid fixed ring (227) of output fixedly connected with of second hydraulic stem (226), a plurality of electric telescopic handle (228) of side fixedly connected with of solid fixed ring (227), the output of electric telescopic handle (228) all runs through solid fixed ring (227), and the equal fixedly connected with material brush (229) of output of electric telescopic handle (228).
9. The method for manufacturing a heat resistant insulated MPP power cable tube according to claim 4, wherein the assembling machine comprises the following steps:
starting two groups of third driving motors (23), wherein the two groups of third driving motors (23) respectively drive two groups of first spiral rods (24) to rotate, so as to respectively drive the first sliding plate (14) and the second sliding plate (15) to slide out to the outer sides of the base plate (8) and the driving frame (9) along the sliding rods (25) through the first pulleys (16), then placing the MPP outer pipeline (5) into the first pipeline fixer (18) on the second sliding plate (15), placing the inner pipeline (1) into the pipeline slider (17) on the first sliding plate (14), then starting the third driving motors (23) again, moving the first sliding plate (14) and the second sliding plate (15) into the base plate (8) and the driving frame (9), then starting the first driving motors (10), and the first driving motors (10) drive the second spiral plates (28) to rotate through the synchronous belts (29), thereby driving the driving plate (11) to move, and after the driving plate (11) drives the three-jaw chuck (13) to move to the outer side of one end of the inner pipeline (1), starting the three-jaw chuck (13) to fix the inner pipeline (1);
pouring adhesive into a storage bin (32), starting an electric heater (31) to heat the adhesive, starting a fourth driving motor (33) to drive a stirring rod (34) to stir the adhesive, then starting an electric telescopic rod (228), taking a material brush (229) out of a fixing ring (227), changing the angles of a first hydraulic rod (223) and a second hydraulic rod (226) by starting a first rotating motor (222) and a second rotating motor (225), changing the position of the fixing ring (227) by starting the first hydraulic rod (223) and the second hydraulic rod (226), adjusting the fixing ring (227) to the inside of the storage bin (32), adhering the material brush (229) with the adhesive, then starting a coating arm (22) again to bring the material brush (229) to the outer side of an inner pipeline (1), then starting the first driving motor (10) again, driving the inner pipeline (1) to be embedded into the inner part of an MPP pipeline (5) through a chuck (11) and a three-jaw (13), when inner pipe way (1) remove, start coating arm (22), paint the outside of inner pipe way (1) with the adhesive, after the equipment is accomplished, start second driving motor (12), drive inner pipe way (1) and rotate in the inside of MPP outer pipe way (5), including pipeline (1), between insulating net (2) and MPP outer pipe way (5) with adhesive evenly distributed, pick out wire (7) in connecting hole (6) of MPP outer pipe way (5) afterwards, it can to use raw materials (A) to seal connecting hole (6) again.
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