CN117970583B - Self-heat-tracing petroleum exploration optical cable and manufacturing method - Google Patents
Self-heat-tracing petroleum exploration optical cable and manufacturing method Download PDFInfo
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- CN117970583B CN117970583B CN202410162977.7A CN202410162977A CN117970583B CN 117970583 B CN117970583 B CN 117970583B CN 202410162977 A CN202410162977 A CN 202410162977A CN 117970583 B CN117970583 B CN 117970583B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000003208 petroleum Substances 0.000 title abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims description 38
- 238000001125 extrusion Methods 0.000 claims description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- 239000011810 insulating material Substances 0.000 claims description 16
- 239000013307 optical fiber Substances 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 13
- 229920003023 plastic Polymers 0.000 claims description 13
- 229920002313 fluoropolymer Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000004642 Polyimide Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 229920001721 polyimide Polymers 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229920001940 conductive polymer Polymers 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000008397 galvanized steel Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000704 physical effect Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
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- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 poly (perfluoroethylene propylene) Polymers 0.000 description 1
- XIUFWXXRTPHHDQ-UHFFFAOYSA-N prop-1-ene;1,1,2,2-tetrafluoroethene Chemical group CC=C.FC(F)=C(F)F XIUFWXXRTPHHDQ-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
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- 239000003351 stiffener Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating cables
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a self-heat tracing petroleum exploration optical cable and a manufacturing method thereof, wherein the self-heat tracing petroleum exploration optical cable comprises two arc-shaped photoelectric units, a conducting strip, an insulating layer, a reinforcing piece and a sheath, wherein the arc-shaped photoelectric units are tightly attached to two sides of the conducting strip, and the insulating layer and the reinforcing piece are sequentially wrapped on the peripheries of the arc-shaped photoelectric units and the conducting strip from inside to outside; a positioning gap is reserved between the two ends of the conducting strip and the arc-shaped photoelectric units, and the insulating layer stretches into the positioning gap. The optical unit is positioned in the middle of the arc-shaped photoelectric unit, the arc-shaped photoelectric unit is in planar contact with the conducting strip, the PTC characteristic of the optical cable is fully exerted, the insulating layer is used for wrapping the arc-shaped photoelectric unit and the conducting strip, and the two ends of the conducting strip are embedded into the insulating layer, so that the optical cable is stable in structure, and reliable in heat tracing, electric and mechanical physical properties.
Description
Technical Field
The invention belongs to the technical field of optical cables and cables, and relates to a self-heat tracing oil exploration optical cable and a manufacturing method thereof.
Background
The "PTC" characteristic, that is, the positive temperature coefficient effect, is a characteristic in which the material resistivity increases with an increase in temperature, and the resistance increases sharply in a certain temperature interval. When the conductive polymer composite material has Positive Temperature Coefficient (PTC) characteristic, the conductive polymer composite material is mutually connected in parallel, and can automatically adjust output power along with the temperature change of a heated system and automatically limit heating temperature.
The electric tracing band is generally used for various environments requiring self-temperature control or self-temperature limitation. In the heat tracing band, when current passes through the conductive material having PTC characteristics between two wires, electric energy between the wires changes with the influence of temperature, and when the temperature is low, the current passes to generate heat, the electric energy heats up the conductive material, and as the temperature increases, the resistance of the conductive material increases, and after the temperature reaches a certain value, the resistance of the conductive material increases sharply to the extent that the current is almost blocked, and the temperature no longer increases. Conversely, as the temperature decreases, the electric energy between the wires increases, and the generated heat synchronously increases, so that the self-heating, also called self-temperature control or self-temperature limiting, is realized, and the local high-temperature hot spots and the burning possibility are avoided.
In petroleum exploration, a common detection cable or optical cable has no heat tracing function, is difficult to retract and retract when the downhole temperature is low, the viscosity of an oil product is high or even is solidified, and is damaged due to overlarge cable load caused by overlarge viscosity of the oil product or even solidification when the oil product is severe, and the exploration is invalid when the oil product is severe.
Therefore, a photoelectric composite cable with self heat tracing or self temperature limiting is developed, a new manufacturing method is adopted, the self temperature control of different well depth sections under different environmental temperatures can be solved, and the distribution condition of the temperature of each well depth section and the cable bearing stress can be measured by utilizing optical fibers, so that the photoelectric composite cable becomes a leading edge technical problem to be solved in the current industry.
Disclosure of Invention
The invention aims to provide a self-heat-tracing oil exploration optical cable and a manufacturing method thereof, which can solve the problems, are convenient and reliable to use, have low comprehensive cost and are suitable for industrial popularization and application.
According to the technical scheme provided by the invention: the self-heat tracing oil exploration optical cable comprises two arc-shaped photoelectric units, a conducting strip, an insulating layer, a reinforcing piece and a sheath, wherein the arc-shaped photoelectric units are tightly attached to two sides of the conducting strip, and the insulating layer and the reinforcing piece are sequentially wrapped on the peripheries of the arc-shaped photoelectric units and the conducting strip from inside to outside; a positioning gap is reserved between the two ends of the conducting strip and the arc-shaped photoelectric units, and the insulating layer stretches into the positioning gap.
As a further improvement of the invention, the arc photoelectric unit consists of an arc soft copper tube containing a light unit and a plurality of soft round copper wires; the optical unit is a stainless steel tube which contains a plurality of high-temperature resistant optical fibers and hydrogen absorption fiber paste; the conductive sheet is I-shaped and is made of conductive plastic; the insulating layer is made of fluoroplastic F or perfluoroethylene propylene F or fluorocarbon polymer (ETFE) or crosslinked polyolefin insulating material; the reinforcing piece adopts tightly arranged aramid fibers, and the periphery of the reinforcing piece is sleeved with a sheath; the sheath is made of fluorocarbon polymer (ETFE) or polyurethane or polyolefin sheath material.
As a further improvement of the present invention, the high temperature resistant optical fiber is a Polyimide (PI) coated optical fiber; the conductive plastic adopted by the conductive sheet is a conductive polymer composite material with PTC characteristics.
As a further improvement of the invention, the reinforcement is made of galvanized steel wire.
A manufacturing method of a self-heat tracing oil exploration optical cable is used for manufacturing the self-heat tracing oil exploration optical cable, and comprises the following steps:
Step one, manufacturing a light unit; a high-temperature resistant optical fiber and hydrogen absorption fiber paste are arranged in the circular stainless steel tube;
Step two, manufacturing a conductive sheet; extruding conductive plastic particles at high temperature by adopting an extruding machine, and cooling to prepare an I-shaped conductive sheet;
Step three, manufacturing an arc-shaped photoelectric unit; adopting a photoelectric unit forming module, wherein the photoelectric unit forming module comprises a cambered forming die, a pair of rolling half-cambered wheels and a cambered drawing die which are sequentially arranged; one end of the arc forming die is a half-enclosed die inlet, the other end is a full-enclosed die outlet, and smooth transition is adopted between the inlet and the outlet; the periphery of the rolling half arc wheel is provided with a half forming groove, and a gap positioning interval is formed between the rolling half arc wheels; the arc drawing die is provided with a final forming groove, and the following steps are carried out:
Firstly, manufacturing a rudiment arc-shaped photoelectric unit; a soft copper belt is used for wrapping a light unit and a plurality of soft round copper wires, then the soft copper wires are fed into an arc forming die from a die inlet, the arc soft copper wires coming out of a die outlet pass through a gap positioning interval between a pair of rolling half-arc wheels to perform gap positioning, and a welding machine is used for aligning gaps for continuous welding, so that a rudiment arc photoelectric unit is obtained;
secondly, the rudiment arc photoelectric unit passes through a final forming groove in an arc drawing die to be drawn and shaped, and the gap is compressed to manufacture the arc photoelectric unit with the required shape and size;
Step four, guiding the arc photoelectric unit and the conducting strip before extrusion molding; the guide assembly and the plastic extruding machine are adopted for operation, and the guide assembly comprises a guide front end assembly, a guide middle end assembly and a guide rear end assembly; the guiding front end component is positioned behind the arc drawing die, and the guiding rear end component is positioned in front of a wire inlet of the extrusion molding machine head; the guide front-end assembly comprises a conductive sheet pressing roller guide wheel set, arc-shaped photoelectric unit preliminary guide groups are arranged on two sides of the conductive sheet pressing roller guide wheel set, the conductive sheet pressing roller guide wheel set consists of a pair of conductive sheet pressing roller guide wheels, conductive sheet guide grooves are formed in the periphery of the conductive sheet pressing roller guide wheels, and a conductive sheet front-end guide section is arranged between the conductive sheet pressing roller guide wheels; the arc photoelectric unit preliminary guide group comprises a semicircular rolling guide wheel and a cylindrical rolling guide wheel, the periphery of the semicircular rolling guide wheel is provided with a photoelectric unit guide groove, and a photoelectric unit front end guide interval is arranged between the semicircular rolling guide wheel and the cylindrical rolling guide wheel; the guiding middle end assembly is provided with two semicircular pressing and rolling guide wheels, and a middle end guiding section is arranged between the semicircular pressing and rolling guide wheels; the guide rear end assembly is provided with a wire inlet positioning die, a guide piece rear end positioning groove is formed in the middle of the wire inlet positioning die, and photoelectric unit rear end positioning grooves are formed in two sides of the guide piece rear end positioning groove;
The first step, a conducting strip passes through a conducting strip front end guiding section, and an arc-shaped photoelectric unit passes through a photoelectric unit front end guiding section;
Secondly, the conducting strip and the arc-shaped photoelectric units on two sides penetrate through the middle end guide section, and the two arc-shaped photoelectric units are close to the conducting strip;
thirdly, the conducting strip penetrates through the locating groove at the rear end of the guide strip, and the arc-shaped photoelectric units at two sides penetrate through the locating groove at the rear end of the photoelectric unit;
Extruding an insulating layer; adopting an extrusion molding die, wherein the extrusion molding die comprises a die core and a die sleeve, the die sleeve is sleeved on the periphery of the die core, a material channel is reserved between the die core and the die sleeve, a die core hole is formed in the die core, the front end of the die core hole comprises a conducting strip wire inlet hole, photoelectric unit wire inlet holes are formed in two sides of the conducting strip wire inlet hole, the rear end of the die core hole is gradually contracted in the horizontal direction, an outlet is a circular hole, a trough and a feed hole which are communicated are formed in the die core, the trough is arranged on the periphery of the die core, and the feed hole is communicated with the extrusion molding hole and the trough; the number of the feeding holes is two, the feeding holes are symmetrically arranged, and the inner ends of the feeding holes are close to the positioning gaps between the two ends of the conducting strip and the arc-shaped photoelectric units;
firstly, respectively penetrating two arc-shaped photoelectric units and a conducting strip through a photoelectric unit wire inlet hole and a conducting strip wire inlet hole in a mold core of an extrusion molding mold;
Secondly, two arc-shaped photoelectric units and a conducting strip enter the rear end of a die core hole, the arc-shaped photoelectric units in the horizontal direction gradually approach and cling to the conducting strip, the extruder continuously pushes molten insulating materials to a material channel between the die core and a die sleeve of an extrusion die, and part of molten insulating materials are extruded to a positioning gap between the two ends of the conducting strip and the two arc-shaped photoelectric units through a material groove and two feeding holes; extruding another part of melted insulating material from a material channel between the mold core and the mold sleeve to form a continuous circular hot material pipe;
Thirdly, after leaving the outlet of the extrusion molding die, the round material heat pipe is stretched, reduced in diameter and thickness in a horn shape, wrapped on the peripheries of the two arc-shaped photoelectric units and the conducting strip, and is bonded with the two ends of the conducting strip and the insulating materials fused in the positioning gaps of the two arc-shaped photoelectric units into an insulating layer;
Step six, cooling and shaping the insulating layer through a water tank;
seventhly, the reinforcing pieces are closely arranged in a concentric circle mode and are wrapped on the periphery of the insulating layer;
And step eight, extruding the sheath, and tightly extruding the sheath on the periphery of the reinforcing piece.
As a further improvement of the invention, the ratio of the total sectional area of the rudiment arc-shaped photoelectric unit to the total sectional area of the arc-shaped photoelectric unit is controlled to be in the range of 1.02-1.2.
As a further improvement of the invention, the ratio of the cross section area of the material channel outlet between the mold core and the mold sleeve to the cross section area of the insulating layer 3 is controlled to be 1.2-10.
The application has the positive progress effects that:
The self-heat tracing oil exploration optical cable is a composite cable integrating self-heat tracing, optical fiber measurement and optical fiber communication functions, has the self-heat tracing function, and can meet the use environment requirements of oil exploration and underground operation.
The optical unit is positioned in the middle of the arc-shaped photoelectric unit 1, the arc-shaped photoelectric unit is in plane contact with the conducting strip 2, the PTC characteristic of the optical cable is fully exerted, the insulating layer 3 wraps the arc-shaped photoelectric unit and the conducting strip 2, and the two ends of the conducting strip 2 are embedded into the insulating layer 3, so that the optical cable has stable structure and reliable electrical, mechanical and physical properties.
The arc-shaped soft copper pipe is internally wrapped with the light units and the arc-shaped photoelectric units of a plurality of soft round copper wires, and the arc-shaped photoelectric units are properly drawn and compressed, so that on one hand, the arc-shaped photoelectric units are tightly contacted with the plane of the conducting strip, thereby obtaining excellent electrical performance and heat conduction performance, and enhancing heat tracing effect; on the other hand, the structure of a plurality of soft round copper wires is wrapped by the arc soft copper pipe adopted by the arc photoelectric unit, and the optical cable has better bending performance and ensures the reliability of the cable in the use process because the soft copper pipe is smaller in thickness and the soft round copper wire is smaller in diameter and further has overall flexibility.
The Polyimide (PI) coated optical fiber, conductive plastic, insulating material, hydrogen-absorbing fiber paste, aramid fiber and other materials with good high temperature resistance are adopted, so that the long-term use temperature of the optical cable is greatly improved.
The manufacturing method adopts the process device and the die, and realizes the tight contact and stable structure of the photoelectric unit, the conductive sheet 2 and the insulating layer 3.
The invention has the advantages of stable structure, heat tracing, reliable electrical and mechanical physical properties, small diameter, light weight, high strength and the like, is convenient and reliable to use, has low comprehensive cost, is suitable for industrialized popularization and application, and has high industrial utilization value.
Drawings
Fig. 1 is a schematic view of the structure of the optical cable of the present invention.
Fig. 2 is a schematic structural view of a conductive sheet according to the present invention.
FIG. 3 is a schematic diagram of a photovoltaic cell forming module according to the present invention.
Fig. 4 is a schematic structural view of a conductive sheet pressing and rolling guide wheel according to the present invention.
Fig. 5 is a schematic structural view of a semicircular press roll guide wheel and a cylindrical press roll guide wheel according to the present invention.
Fig. 6 is a schematic structural view of the wire-feeding positioning die of the present invention.
FIG. 7 is a schematic view of the structure of an extrusion die of the present invention.
FIG. 8 is a schematic a section of an extrusion die.
FIG. 9 is a schematic view of section B-B of an extrusion die.
In fig. 1 to 9, the device comprises a light unit 11, a soft round copper wire 12, an arc soft copper tube 13, an arc forming die 61, a rolling half arc wheel 62, an arc drawing die 63, a conducting strip rolling guide wheel 71, a half round rolling guide wheel 72, a cylindrical rolling guide wheel 73, a wire inlet positioning die 74, a die core 81, a material groove 811, a feeding hole 812, a die sleeve 82, a material channel 83 and the like.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the invention herein. Furthermore, the terms "include" and "have," and the like, mean that other content not already listed may be "included" and "provided" in addition to those already listed in "include" and "provided; for example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements not expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Due to the drawing angle problem, some parts may not be drawn, but the positions and connection relations of the parts may be understood according to the text expression part.
As shown in fig. 1, the invention relates to a self-heat-tracing oil exploration optical cable, which comprises two arc-shaped photoelectric units 1, a conductive sheet 2, an insulating layer 3, a reinforcing piece 4 and a sheath 5, wherein the arc-shaped photoelectric units 1 are tightly attached to two sides of the conductive sheet 2, and the insulating layer 3 and the reinforcing piece 4 are sequentially wrapped on the peripheries of the arc-shaped photoelectric units 1 and the conductive sheet 2 from inside to outside.
A positioning gap is reserved between the two ends of the conducting strip 2 and the arc-shaped photoelectric units 1, and the insulating layer 3 stretches into the positioning gap, so that the structure of the conducting strip 2 and the insulating layer 3 is more stable, the conducting strip 2 and the arc-shaped photoelectric units 1 are prevented from rotating in the insulating layer 3, and the whole optical cable is stable in structure, heat-tracing and reliable in electric and mechanical physical properties.
The arc photoelectric unit 1 is composed of an arc soft copper pipe 13, a light unit 11 and a plurality of soft copper wires 12.
The light unit 11 is a stainless steel tube containing a plurality of high temperature resistant optical fibers and hydrogen absorption fiber paste. In this embodiment, the high temperature resistant optical fiber is a Polyimide (PI) coated optical fiber.
As shown in fig. 2, the conductive sheet 2 is I-shaped and made of conductive plastic. Specifically, in the present embodiment, the conductive plastic used for the conductive sheet 2 is a conductive polymer composite material having PTC characteristics.
The insulating layer 3 is made of fluoroplastic (F4) or poly (perfluoroethylene propylene) (F46) or fluorocarbon polymer (ETFE) or cross-linked polyolefin insulating material.
The reinforcing piece 4 adopts aramid 1414 or a plurality of galvanized steel wires which are closely arranged.
When the reinforcing member 4 is made of aramid 1414 closely arranged, the outer circumference of the reinforcing member 4 is sleeved with a sheath 5 to strengthen the overall strength, and the sheath 5 is made of fluorocarbon polymer (ETFE) or polyurethane or polyolefin sheath material.
The sheath 5 may be dispensed with if the stiffener 4 is made of galvanized steel wire.
A manufacturing method of a self-heat tracing oil exploration optical cable is used for manufacturing the self-heat tracing oil exploration optical cable, and comprises the following steps:
Step one, a light unit 11 is manufactured. A high-temperature resistant optical fiber and hydrogen absorption fiber paste are arranged in the circular stainless steel tube;
Step two, the conductive sheet 2 is manufactured. The conductive plastic particles are extruded at high temperature by an extruder and cooled to form the conductive sheet 2 having an I-shape.
Step three, manufacturing the arc-shaped photoelectric unit 1. The photoelectric unit forming module is adopted, as shown in fig. 3, and comprises a arc forming die 61, a pair of rolling half-arc wheels 62 and an arc drawing die 63 which are sequentially arranged; one end of the arc forming die 61 is a half-surrounded die inlet, the other end is a full-surrounded die outlet, and smooth transition is adopted between the inlet and the outlet; as shown in fig. 3, a half forming groove is formed on the periphery of the rolling half arc wheel 62, and a gap positioning interval is formed between the rolling half arc wheels 62; as shown in fig. 3, the arc drawing die 63 is provided with a final forming groove, and the following steps are performed:
First, the rudiment arc-shaped photoelectric unit 1 is manufactured. A soft copper belt is used for wrapping one optical unit 11 and a plurality of soft round copper wires 12, then the soft copper wires are sent into an arc forming die 61 from a die inlet, the arc soft copper wires from a die outlet pass through a gap positioning interval between a pair of rolling half-arc wheels 62 to perform gap positioning, and a welding machine is used for aligning and continuously welding gaps to obtain a rudiment arc photoelectric unit 1;
Secondly, drawing and shaping the rudiment arc-shaped photoelectric unit 1 through a final forming groove in an arc drawing die 63, pressing a gap and manufacturing the arc-shaped photoelectric unit 1 with a required shape and size;
Further, the ratio of the total cross-sectional areas of the rudiment arc-shaped photoelectric unit 1 and the arc-shaped photoelectric unit 1 is controlled to be in the range of 1.02-1.2.
And step four, guiding the arc-shaped photoelectric unit 1 and the conducting strip 2 before extrusion molding. The guide assembly and the plastic extruding machine are adopted for operation, and the guide assembly comprises a guide front end assembly, a guide middle end assembly and a guide rear end assembly; the guiding front end component is positioned behind the arc drawing die 63, and the guiding rear end component is positioned in front of a wire inlet of the extruder head; the guiding front-end assembly comprises a conducting strip pressing roller guiding wheel set, arc-shaped photoelectric unit preliminary guiding groups are arranged on two sides of the conducting strip pressing roller guiding wheel set, as shown in fig. 4, the conducting strip pressing roller guiding wheel set consists of a pair of conducting strip pressing roller guiding wheels 71, conducting strip guiding grooves are formed in the periphery of the conducting strip pressing roller guiding wheels 71, and conducting strip front-end guiding sections are arranged between the conducting strip pressing roller guiding wheels 71; the arc photoelectric unit preliminary guide group comprises a semicircular rolling guide wheel 72 and a cylindrical rolling guide wheel 73, as shown in fig. 5, photoelectric unit guide grooves are formed in the periphery of the semicircular rolling guide wheel 72, and a photoelectric unit front end guide interval is formed between the semicircular rolling guide wheel 72 and the cylindrical rolling guide wheel 73; the guiding middle end assembly is provided with two semicircular pressing and rolling guide wheels 72, and a middle end guiding section is arranged between the semicircular pressing and rolling guide wheels 72; the guiding rear end assembly is provided with a wire inlet positioning die 74, as shown in fig. 6, a guiding sheet rear end positioning groove is arranged in the middle of the wire inlet positioning die 74, and photoelectric unit rear end positioning grooves are arranged on two sides of the guiding sheet rear end positioning groove.
In the first step, the conductive sheet 2 passes through the guiding section of the front end of the conductive sheet, and the arc-shaped photoelectric unit 1 passes through the guiding section of the front end of the photoelectric unit.
And secondly, the conducting strip 2 and the arc-shaped photoelectric units 1 on two sides penetrate through the middle end guide section, and the two arc-shaped photoelectric units 1 are close to the conducting strip 2.
And thirdly, the conducting strip 2 passes through the locating groove at the rear end of the conducting strip, and the arc-shaped photoelectric units 1 at two sides pass through the locating groove at the rear end of the photoelectric unit.
And fifthly, extruding the insulating layer 3. Adopting extrusion molding mould, as shown in fig. 7, extrusion molding mould includes mold core 81 and die sleeve 82, die sleeve 82 cover is established in mold core 81 periphery, mold core 81 and die sleeve 82 leave material way 83, be equipped with the mold core hole in the mold core 81, as shown in fig. 8, mold core hole front end includes the conducting strip inlet wire hole, conducting strip inlet wire hole both sides are equipped with photoelectric unit inlet wire hole, as shown in fig. 9, mold core hole rear end is the horizontal direction shrink gradually, the export is circular hole, be equipped with the silo 811 and the feed hole 812 that are linked together on the mold core 81, the silo 811 is located the mold core 81 periphery, feed hole 812 intercommunication extrusion molding hole and silo 811. In this embodiment, the number of the feeding holes 812 is two, and the feeding holes 812 are symmetrically arranged, and the inner ends of the feeding holes 812 are close to the positioning gaps between the two ends of the conductive sheet 2 and the arc-shaped photoelectric units 1.
In the first step, two arc-shaped photoelectric units 1 and a conductive sheet 2 are respectively passed through a photoelectric unit wire inlet hole and a conductive sheet wire inlet hole in a mold core 81 of an extrusion mold.
Secondly, two arc-shaped photoelectric units 1 and a conducting strip 2 enter the rear end of a mould core hole, the arc-shaped photoelectric units 1 in the horizontal direction gradually approach and cling to the conducting strip 2, the extruder continuously pushes molten insulating materials to a material channel 83 between a mould core 81 and a mould sleeve 82 of an extrusion mould, and part of molten insulating materials is extruded to a positioning gap between two ends of the conducting strip 2 and the two arc-shaped photoelectric units 1 through a material groove 811 and two feeding holes 812; another portion of the melted insulating material is extruded from a channel 83 between the mold core 81 and the mold sleeve 82 as a continuous circular hot tube.
And thirdly, after leaving the outlet of the extrusion molding die, the round material heat pipe is stretched, reduced in diameter and thickness in a horn shape, wrapped on the peripheries of the two arc-shaped photoelectric units 1 and the conducting strip 2, and is adhered with the two ends of the conducting strip 2 and the insulating materials fused in the positioning gaps of the two arc-shaped photoelectric units 1 into an integral insulating layer 3.
Further, the ratio of the cross-sectional area of the outlet of the material passage 83 between the mold core 81 and the mold sleeve 82 to the cross-sectional area of the insulating layer 3 is controlled to be 1.2-10.
And step six, cooling and shaping the insulating layer 3 through a water tank.
Seventh, the reinforcing members 4 are closely arranged in concentric circles and wrapped around the outer circumference of the insulating layer 3.
And step eight, extruding the sheath 5, and tightly extruding the sheath on the periphery of the reinforcing piece 4.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (3)
1. The manufacturing method of the self-heat tracing oil exploration optical cable is characterized by comprising two arc-shaped photoelectric units (1), a conducting strip (2), an insulating layer (3), a reinforcing piece (4) and a sheath (5), wherein the arc-shaped photoelectric units (1) are tightly attached to two sides of the conducting strip (2), and the insulating layer (3) and the reinforcing piece (4) are sequentially wrapped on the peripheries of the arc-shaped photoelectric units (1) and the conducting strip (2) from inside to outside; a positioning gap is reserved between the two ends of the conducting strip (2) and the arc-shaped photoelectric units (1), the insulating layer (3) stretches into the positioning gap, and the arc-shaped photoelectric units (1) are composed of an arc-shaped soft copper pipe (13) internally provided with a light unit (11) and a plurality of soft copper wires (12); the optical unit (11) is a stainless steel tube which contains a plurality of high-temperature resistant optical fibers and hydrogen absorption fiber paste; the conductive sheet (2) is I-shaped and is made of conductive plastic; the insulating layer (3) adopts fluoroplastic F4 or perfluoroethylene propylene F46 or fluorocarbon polymer ETFE or crosslinked polyolefin insulating material; the reinforcing piece (4) adopts tightly arranged aramid fiber 1414, and the periphery of the reinforcing piece (4) is sleeved with a sheath (5); the sheath 5 adopts fluorocarbon polymer ETFE or polyurethane or polyolefin sheath material; the high temperature resistant optical fiber is a Polyimide (PI) coated optical fiber; the conductive plastic adopted by the conductive sheet (2) is a conductive polymer composite material with PTC characteristics; the reinforcement (4) is made of galvanized steel wires; the manufacturing method comprises the following steps:
step one, manufacturing a light unit (11); a high-temperature resistant optical fiber and hydrogen absorption fiber paste are arranged in the circular stainless steel tube;
Step two, manufacturing a conductive sheet (2); extruding conductive plastic particles at high temperature by adopting an extruding machine, and cooling to prepare an I-shaped conductive sheet (2);
Step three, manufacturing an arc-shaped photoelectric unit (1); the method comprises the steps of adopting a photoelectric unit forming module, wherein the photoelectric unit forming module comprises a cambered forming die (61), a pair of rolling half-cambered wheels (62) and a cambered drawing die (63) which are sequentially arranged; one end of the arc forming die (61) is a half-surrounded die inlet, the other end is a full-surrounded die outlet, and smooth transition is adopted between the inlet and the outlet; the periphery of the rolling half arc wheel (62) is provided with a half forming groove, and a gap positioning interval is formed between the rolling half arc wheels (62); the arc drawing die (63) is provided with a final forming groove, and the following steps are carried out:
firstly, manufacturing a rudiment arc-shaped photoelectric unit (1); a light unit (11) and a plurality of soft round copper wires (12) are wrapped by soft copper belts, then are sent into an arc forming die (61) from a die inlet, arc soft copper wires from a die outlet pass through a gap positioning interval between a pair of rolling half-arc wheels (62) to be positioned in a gap, and a welding machine is adopted to continuously weld aligned gaps to obtain a rudiment arc photoelectric unit (1);
Secondly, the rudiment arc-shaped photoelectric unit (1) passes through a final forming groove in an arc drawing die (63) for drawing and shaping, and the gap is compressed to manufacture the arc-shaped photoelectric unit (1) with the required shape and size;
Step four, guiding the arc photoelectric unit (1) and the conducting strip (2) before extrusion molding; the guide assembly and the plastic extruding machine are adopted for operation, and the guide assembly comprises a guide front end assembly, a guide middle end assembly and a guide rear end assembly; the guiding front end component is positioned behind the arc drawing die (63), and the guiding rear end component is positioned in front of a wire inlet of the extrusion machine head; the guiding front end assembly comprises a conducting strip pressing roller guide wheel set, arc-shaped photoelectric unit preliminary guide groups are arranged on two sides of the conducting strip pressing roller guide wheel set, the conducting strip pressing roller guide wheel set consists of a pair of conducting strip pressing roller guide wheels (71), conducting strip guide grooves are formed in the periphery of the conducting strip pressing roller guide wheels (71), and conducting strip front end guide sections are arranged between the conducting strip pressing roller guide wheels (71); the arc-shaped photoelectric unit preliminary guide group comprises a semicircular rolling guide wheel (72) and a cylindrical rolling guide wheel (73), a photoelectric unit guide groove is formed in the periphery of the semicircular rolling guide wheel (72), and a photoelectric unit front end guide section is arranged between the semicircular rolling guide wheel (72) and the cylindrical rolling guide wheel (73); the guiding middle end assembly is provided with two semicircular rolling guide wheels (72), and a middle end guiding section is arranged between the semicircular rolling guide wheels (72); the guide rear end assembly is provided with a wire inlet positioning die (74), a guide piece rear end positioning groove is formed in the middle of the wire inlet positioning die (74), and photoelectric unit rear end positioning grooves are formed in two sides of the guide piece rear end positioning groove;
firstly, a conducting strip (2) passes through a conducting strip front end guiding section, and an arc-shaped photoelectric unit (1) passes through a photoelectric unit front end guiding section;
secondly, the conducting strip (2) and the arc-shaped photoelectric units (1) on two sides penetrate through the middle end guide section, and the two arc-shaped photoelectric units (1) are close to the conducting strip (2);
Thirdly, the conducting strip (2) passes through a locating groove at the rear end of the conducting strip, and the arc-shaped photoelectric units (1) at two sides pass through a locating groove at the rear end of the photoelectric unit;
Extruding the insulating layer (3); adopting extrusion molding mould, extrusion molding mould includes mold core (81) and die sleeve (82), die sleeve (82) cover is established in mold core (81) periphery, mold core (81) and die sleeve (82) leave material way (83), be equipped with the mold core hole in mold core (81), the mold core hole front end includes the conducting strip entrance hole, conducting strip entrance hole both sides are equipped with photoelectric unit entrance hole, mold core hole rear end is the horizontal direction and contracts gradually, the export is circular hole, be equipped with silo (811) and feed hole (812) that are linked together on mold core (81), silo (811) are located mold core (81) periphery, feed hole (812) intercommunication extrusion molding hole and silo (811); the number of the feeding holes (812) is two, the feeding holes are symmetrically arranged, and the inner ends of the feeding holes (812) are close to the positioning gaps between the two ends of the conducting strip (2) and the arc-shaped photoelectric units (1);
Firstly, respectively penetrating two arc-shaped photoelectric units (1) and a conducting strip (2) through a photoelectric unit wire inlet hole and a conducting strip wire inlet hole in a mold core (81) of an extrusion molding mold;
Secondly, two arc-shaped photoelectric units (1) and a conducting strip (2) enter the rear end of a mould core hole, the arc-shaped photoelectric units (1) in the horizontal direction are gradually closed to the conducting strip (2) and are clung to each other, a molten insulating material is continuously pushed to a material channel (83) between a mould core (81) and a mould sleeve (82) of an extrusion mould by an extruder, and a part of molten insulating material is extruded to a positioning gap between two ends of the conducting strip (2) and the two arc-shaped photoelectric units (1) through a material groove (811) and two feeding holes (812); extruding a continuous circular hot pipe from a material channel (83) between the mold core (81) and the mold sleeve (82) by another part of molten insulating material;
Thirdly, after leaving the outlet of the extrusion molding die, the round material heat pipe is stretched, reduced in diameter and thickness in a horn shape, wrapped on the peripheries of the two arc-shaped photoelectric units (1) and the conducting plate (2), and is bonded with the two ends of the conducting plate (2) and the insulating materials fused in the positioning gaps of the two arc-shaped photoelectric units (1) into an integral insulating layer (3);
step six, the insulating layer (3) is cooled and shaped through a water tank;
seventhly, the reinforcing pieces (4) are closely arranged in a concentric circle mode and are wrapped on the periphery of the insulating layer (3);
And eighth, extruding the sheath (5) to tightly extrude the sheath on the periphery of the reinforcement (4).
2. The method for manufacturing a self-heat tracing oil exploration optical cable according to claim 1, wherein the ratio of the total cross-sectional areas of the rudiment-shaped arc-shaped photoelectric unit (1) and the arc-shaped photoelectric unit (1) is controlled to be in the range of 1.02-1.2.
3. The method for manufacturing a self-heating oil exploration optical cable according to claim 1, wherein the ratio of the outlet cross-sectional area of the material channel (83) between the mold core (81) and the mold sleeve (82) to the cross-sectional area of the insulating layer (3) is controlled to be 1.2-10.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19631820C1 (en) * | 1996-08-07 | 1997-07-24 | Felten & Guilleaume Energie | Electrical multi-wire cable |
| CN204331105U (en) * | 2014-12-11 | 2015-05-13 | 安徽电信器材贸易工业有限责任公司 | A kind of elasticity optical cable with companion's heat structure |
| CN116107050A (en) * | 2023-02-22 | 2023-05-12 | 江苏巨量光电科技有限公司 | Special-shaped multitube optical fiber composite overhead ground wire and manufacturing method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69915181T2 (en) * | 1998-07-15 | 2004-07-29 | Kitagawa Industries Co., Ltd., Nagoya | Quartz glass, optical element and fiber optic device resistant to ultraviolet and radioactive radiation, and manufacturing method therefor |
| CN201181607Y (en) * | 2008-03-03 | 2009-01-14 | 昆山火凤凰线缆有限公司 | Aerial snow-melting and deicing optical/electrical cable |
| CN201247607Y (en) * | 2008-07-10 | 2009-05-27 | 远东电缆有限公司 | PTC heat-accompanying cable |
| CN103065721B (en) * | 2013-01-14 | 2015-03-25 | 中利科技集团股份有限公司 | Photoelectricity composite cable with flexible metallic sheath |
| CN106128629B (en) * | 2016-08-04 | 2018-01-09 | 四川九洲线缆有限责任公司 | A kind of photoelectric hybrid transmission thermal balance cable |
| CN206323586U (en) * | 2016-12-15 | 2017-07-11 | 安邦电气股份有限公司 | A kind of clean cut system automatic temperature-controlled heat tracing cable |
| CN107464608A (en) * | 2017-09-18 | 2017-12-12 | 浙江华普电缆有限公司 | A kind of special-shaped photoelectric compound cable |
| CN109065282A (en) * | 2018-08-10 | 2018-12-21 | 芜湖市旭辉电工新材料有限责任公司 | A kind of heat conductive insulating accompanying-heat cable processing method |
| CN109102932A (en) * | 2018-08-27 | 2018-12-28 | 长光通信科技江苏有限公司 | A kind of multiple field interior insulation fiber optic cable |
-
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- 2024-02-05 CN CN202410162977.7A patent/CN117970583B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19631820C1 (en) * | 1996-08-07 | 1997-07-24 | Felten & Guilleaume Energie | Electrical multi-wire cable |
| CN204331105U (en) * | 2014-12-11 | 2015-05-13 | 安徽电信器材贸易工业有限责任公司 | A kind of elasticity optical cable with companion's heat structure |
| CN116107050A (en) * | 2023-02-22 | 2023-05-12 | 江苏巨量光电科技有限公司 | Special-shaped multitube optical fiber composite overhead ground wire and manufacturing method |
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