CN2442370Y - Precross link three layer coextruded machine head - Google Patents
Precross link three layer coextruded machine head Download PDFInfo
- Publication number
- CN2442370Y CN2442370Y CN 00247733 CN00247733U CN2442370Y CN 2442370 Y CN2442370 Y CN 2442370Y CN 00247733 CN00247733 CN 00247733 CN 00247733 U CN00247733 U CN 00247733U CN 2442370 Y CN2442370 Y CN 2442370Y
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- power cable
- glue
- feeder
- cables
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Abstract
The utility model relates to a trilaminar coextrusion machine head for advance crosslinking, which belongs to the technical field of machine manufacture. A glue feeding annular flow channel in equal depth is composed of a flow splitting body, a glue feeding opening, a mould core, etc.; the flow channel has three layers; the lengths of an external mould sleeve and a mould opening are lengthened, so that the process of advance crosslinking of the insulating layers of power cables can be performed; the temperature of the mould opening can be improved by using a heating tile simultaneously, so that the degree of advance crosslinking of the insulating layers of the cables can be improved, and the problem of pyriform eccentricity of the power cables can be prevented; the mould opening is provided with an oil injecting hole, and high-pressure silicon oil is injected into micro-holes of the insulating layers and are spread on the surfaces of the cables, so that water can be prevented from penetrating into the cables when the cables enter the water on a cooling section, and not water tree can be generated to improve the quality of the cables.
Description
A kind of precrosslink three-layer co-extruding machine head belongs to machinery manufacturing technology field, is a kind of three-layer co-extruding machine head of producing power cable.
The interior semi-conductive layer of cable and the contact-making surface of insulating barrier are the highest places of cable field intensity; the all the easiest high concentration that causes electric field strength of any defective on this face; for preventing the damage on internal semi-conductive layer surface; prevent sizing material overstand and produce early stage crosslinked situation in annular channel; form particle or uneven phenomenon when making sizing material coat cable core; I once applied in December, 1997 that a patent No. was 97251065.6 at this problem; name is called the Patent equipment of " extruding the cross-linked power cable three-layer co-extruding machine head "; and in August, 1999 power of patenting; this head has avoided sizing material to take place crosslinked in the torus knot runner and problem that bring for production and cable quality effectively; but; the sizing material that dissolves is in producing high pressure and ultra-high voltage cross-linking power cable; produce the phenomenon of cable insulation pyriform off-centre; at present; at this problem; the most reliable process program is to produce on vertical cross-linking production line; but the investment of equipment and factory building is very high; therefore; the process program of high pressure and ultra-high voltage cross-linking cable has appearred again producing on catenary crosslinking production line; at present; the rubbing device of domestic useful Nokia Telecommunications commonly used patented technology equipment and with the catenary crosslinking production line of the rotary tractor up and down of German Qiao Site house journal technical equipment; its technology purpose makes the crosslinked limit rotation of cable limit in crosslinked pipeline exactly; make it in crosslinked change procedure; the Changing Pattern that it is eccentric and the speed of rotation are complementary, thereby solve the insulating barrier eccentricity issues.Propose one again in Nokia Telecommunications in the International Power plant equipment fair in 1998 and hanging the new measure that solves insulating barrier off-centre on the production line, before six joint heating tubes, add a joint cooling water pipe exactly, insulating barrier cools off after head comes out, improve the hardness of insulating barrier, prevent the generation of insulating barrier off-centre, even when entering six joint heating tubes of back, also no longer produce eccentric phenomena.Use this process program need increase by six meters long cooling water pipes of a joint, a nitrogen circulation blower fan, the stainless steel air pipeline of a cover nitrogen heat exchanger and a cover latus rectum Φ 100mm, six meters in the factory building of also will extending increases production cost.
The purpose of this utility model provides a kind of precrosslink three-layer co-extruding machine head, prolong insulating barrier and extrude the sizing area length of die sleeve and the length of outer semiconducting layer extrusion mould-outlet, make insulating barrier, outer semiconducting layer sizing material finish precrosslink at this, solve the pyriform eccentricity issues, and injection silicone oil, the insulation quality of raising high pressure, extra-high-tension cable.
The technical solution of the utility model is: form the sizing material distribution system by core pipe, branch fluid, glue-feeder, core rod, interior die sleeve etc., sizing material enters from glue-feeder, flow out along annular channel, be coated on the power cable core, constitute the interior semi-conductive layer extruding part of power cable, the ground floor of finishing cable extrudes; Constitute dark annular such as by a minute fluid, interior die sleeve, glue-feeder, handpiece body, external mold block set, outer die casing and enter the solation road, heating watt is installed on the external mold block set, constitutes the insulating barrier extruding part of power cable, and the second layer of finishing power cable extrudes; Outer die casing, external mold block set, die orifice, glue-feeder, branch fluid constitute dark annular such as and enter the solation road, and heating watt is installed on the die orifice, constitutes the outer semiconducting layer extruding part of power cable; On die orifice, have oil filler point.
The outer die casing lengthening of the insulating barrier extruding part of described power cable, the sizing area length that makes insulating barrier is more than 100mm.The die orifice of the outer semiconducting layer extruding part of lengthening power cable makes outer semiconducting layer extrusion mould-outlet length more than 100mm.
The utility model has the advantages that: the length of lengthening outer die casing, die orifice, make insulating barrier, the outer semiconducting layer of power cable carry out precrosslink at this, simultaneously by heating a watt temperature that improves die orifice, increase the precrosslink degree of cable insulation, outer semiconducting layer, prevent the pyriform eccentricity issues of power cable; By the oil filler point that has at the die orifice place micropore of cable insulation is injected high pressure silicone oil, high pressure silicone oil charges into micropore and is applied to cable surface, and anti-sealing infiltrates insulating barrier when making cable in entering the water of cooling section, can not produce the water tree, improves cable quality.The appropriate design of this device and structure have avoided above-mentioned at present by the method for lengthening factory building, interpolation auxiliary equipment, reduce to produce and drop into the saving fund.
Accompanying drawing is a structure chart of the present utility model.
Below in conjunction with accompanying drawing the utility model is described in detail:
Constitute dark annular such as by 65 fens fluids 2 of core pipe 1, Φ, glue-feeder 3, core rod 8, core rod seat 5 and Φ 150 minutes fluids 4, interior die sleeves 9 and enter solation road 21, sizing material enters from glue-feeder 3, flow out along annular channel 21, be coated on the power cable core, constitute the interior semi-conductive layer extruding part of power cable, the ground floor of finishing cable extrudes; Constitute dark annular such as by 150 fens fluids 4 of Φ, interior die sleeve 9, glue-feeder 6 and handpiece body 7, external mold block set 10, outer die casing 12 and enter solation road 20, sizing material enters from glue-feeder 6, flow out along annular channel 20, be coated on the interior semi-conductive layer of power cable, constitute the insulating barrier extruding part of power cable, the second layer of finishing power cable extrudes; Heating watts 11 is installed on the external mold block set 10, with the temperature of PID temp controlled meter control heating watts 11, guarantees that insulating barrier finishes precrosslink in this district; Outer die casing 12, external mold block set 10, glue-feeder 15 and die orifice 13, divide colloid 16 to constitute dark annular such as to enter solation road 18, sizing material enters from glue-feeder 15, flow out along annular channel 18, be coated on the power cable insulation layer, constitute the outer semiconducting layer extruding part of power cable; Heating watts 14 is installed on the die orifice 13, with the temperature of PID temp controlled meter control heating watts 14, to the heating of die orifice district, guarantees that outer semiconducting layer finishes precrosslink at this, prevents eccentricity issues; In addition, volume becomes big in the precrosslink process of insulating barrier in die orifice, and the die orifice limitation ot it makes the micro-pore diameter of insulating barrier very little, have oil filler point 17 on the die orifice 13 again, high pressure silicone oil charges in the micropore of insulating barrier by oil filler point 17, can prevent to produce the water tree when making cable in post-order process, enter in the water of cooling section, improve the insulation quality of cable.
Outer die casing 12 lengthenings of the insulating barrier extruding part of described power cable, the sizing area length that makes insulating barrier is more than 100mm; The die orifice 13 of the outer semiconducting layer extruding part of lengthening power cable makes outer semiconducting layer extrusion mould-outlet length more than 100mm.Prolong the length of above-mentioned outer die casing 12, die orifice 13, purpose is that the assurance cable is fully finished precrosslink in this zone, makes it that eccentricity issues no longer take place in post-order process.
Claims (2)
1. precrosslink three-layer co-extruding machine head, by core pipe (1), divide fluid (2), glue-feeder (3), core rod (8), core rod seat (5) and divide fluid (4), interior die sleeve (9) to constitute dark annular such as and enter solation road (21), sizing material enters from glue-feeder (3), flow out along annular channel (21), be coated on the power cable core, constitute the interior semi-conductive layer extruding part of power cable, the ground floor of finishing cable extrudes; Constitute dark annular such as by a minute fluid (4), interior die sleeve (9), glue-feeder (6) and handpiece body (7), external mold block set (10), outer die casing (12) and enter solation road (20), sizing material enters from glue-feeder (6), flow out along annular channel (20), be coated on the interior semi-conductive layer of power cable, constitute the insulating barrier extruding part of power cable, the second layer of finishing power cable extrudes; Outer die casing (12), external mold block set (10), glue-feeder (15) and die orifice (13), divide colloid (16) to constitute dark annular such as to enter solation road (18), sizing material enters from glue-feeder (15), flow out along annular channel (18), be coated on the power cable insulation layer, constitute the outer semiconducting layer extruding part of power cable; It is characterized in that: heating watt (11) is installed on the external mold block set (10); Heating watt (14) is installed on the die orifice (13); Have oil filler point (17) on the die orifice (13).
2. a kind of precrosslink three-layer co-extruding machine head as claimed in claim 1 is characterized in that: outer die casing (12) lengthening, and length remains on more than the 100mm; The length of lengthening die orifice (13), the length that makes die orifice (13) is more than 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00247733 CN2442370Y (en) | 2000-08-25 | 2000-08-25 | Precross link three layer coextruded machine head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00247733 CN2442370Y (en) | 2000-08-25 | 2000-08-25 | Precross link three layer coextruded machine head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2442370Y true CN2442370Y (en) | 2001-08-08 |
Family
ID=33606601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00247733 Expired - Fee Related CN2442370Y (en) | 2000-08-25 | 2000-08-25 | Precross link three layer coextruded machine head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2442370Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572137B (en) * | 2009-06-05 | 2011-01-05 | 江苏中超电缆股份有限公司 | Coilout lubricating system of cable three-layer co-extruded cross-linking assembly line |
| CN101494106B (en) * | 2009-02-20 | 2011-08-10 | 江苏中超电缆股份有限公司 | Die-changing apparatus without shutdown for middle/high voltage crosslinking cable production line |
| CN103065728A (en) * | 2012-12-29 | 2013-04-24 | 安徽省康利亚实业有限公司 | Downtime post-processing craft of extruder |
-
2000
- 2000-08-25 CN CN 00247733 patent/CN2442370Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101494106B (en) * | 2009-02-20 | 2011-08-10 | 江苏中超电缆股份有限公司 | Die-changing apparatus without shutdown for middle/high voltage crosslinking cable production line |
| CN101572137B (en) * | 2009-06-05 | 2011-01-05 | 江苏中超电缆股份有限公司 | Coilout lubricating system of cable three-layer co-extruded cross-linking assembly line |
| CN103065728A (en) * | 2012-12-29 | 2013-04-24 | 安徽省康利亚实业有限公司 | Downtime post-processing craft of extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |