CN103400663B - Aluminum cable sheath preheating device and method for coating outer cable sheath under assistance of aluminum cable sheath preheating device - Google Patents
Aluminum cable sheath preheating device and method for coating outer cable sheath under assistance of aluminum cable sheath preheating device Download PDFInfo
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- CN103400663B CN103400663B CN201310285420.4A CN201310285420A CN103400663B CN 103400663 B CN103400663 B CN 103400663B CN 201310285420 A CN201310285420 A CN 201310285420A CN 103400663 B CN103400663 B CN 103400663B
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Abstract
The invention discloses an aluminum cable sheath preheating device and a method for coating an outer cable sheath under the assistance of the aluminum cable sheath preheating device, and belongs to the field of production of high-voltage cables. The problem of high agglomeration rate of asphalt during the coating of an outer asphalt cable sheath is solved. The aluminum cable sheath preheating device comprises a base, a bracket and at least one thermoplastic blower gun, wherein the bracket is arranged on the base; and the thermoplastic blower gun is arranged on the bracket. The invention also discloses the method for coating the outer cable sheath under the assistance of the aluminum cable sheath preheating device. The method comprises the following steps of paying off a cable from a pay-off rack; preheating an aluminum cable sheath by using the aluminum cable sheath preheating device; impregnating the cable into high-temperature asphalt; after the high-temperature asphalt is coated on the outer surface of the aluminum cable sheath, causing the cable to enter an extruder, and wrapping an asphalt layer with the outer sheath by using the extruder; impregnating the cable into cooling water to cool and reinforce the asphalt layer and the outer sheath; coiling the cable into a take-up spool. According to the aluminum cable sheath preheating device and the method for coating the outer cable sheath under the assistance of the aluminum cable sheath preheating device, the aluminum cable sheath is preheated, so that the phenomena of asphalt agglomeration, asphalt coating omission and the like caused by the low temperature of the aluminum cable sheath are effectively avoided.
Description
Technical field
The present invention relates to high-tension cable production field, particularly a kind of cable aluminium cover preheating device and the method with this device assisted coating cable jacket.
Background technology
Generally can apply one deck bitumen layer again outside the aluminium cover of high-tension cable when producing high-tension cable, waiting effect to reach anticorrosion.In prior art, the aluminium cover outer coating pitch oversheath of high-tension cable method generally: use argon arc welding or extrude after technique makes aluminium cover on the cable core of high-tension cable, the high-tension cable semi-finished product of metallized aluminum sheath are by being drawn through hard pitch cylinder, hard pitch is wrapped up in and is attached to aluminium cover surface, then extrude rapidly oversheath by plastic extruding machine and enter tank cooling again, after hard pitch cooling, condensation forms anticorrosive coat, finally the finished product high-tension cable of coated pitch and oversheath around upper take-up reel.
The above-mentioned this conventional method of coating pitch oversheath outside cable aluminium cover has defect: when the temperature of the surroundings is low, it is lower that the aluminium of semi-finished product high-tension cable overlaps often temperature, after the high-tension cable of metallized aluminum sheath immerses hard pitch, because aluminium sleeving temperature is lower, a part pitch can catch a cold condense in aluminium cover surface become caking, this causes pitch evenly to apply, and even may luming comes off causes the phenomenon of pitch holiday.These situations all can make the antiseptic effect of bitumen layer decline.For this reason, this area needs to research and develop method that is a kind of not only reliable but also cable aluminium cover outer coating pitch oversheath easily conscientiously.
Summary of the invention
The object that the present invention will reach is to provide a kind of cable aluminium cover preheating device, for pre-electric heating cable aluminium cover before cable aluminium cover outer coating asphalt corrosion resistant layer, the aluminium sleeving temperature because of high-tension cable can be avoided too low and the phenomenon such as pitch caking, pitch holiday that causes.
In order to achieve the above object, the present invention adopts following technical scheme: cable aluminium cover preheating device, comprise base, support and at least one thermoplastic air pressure gun, Bracket setting is on base, and thermoplastic air pressure gun is arranged on support.
Further, comprise four described thermoplastic air pressure guns, each hot blast that the air outlet of thermoplastic air pressure gun is gone out all blows to cable aluminium cover surface.The point that high-tension cable converges through hot blast, four thermoplastic air pressure gun simultaneously with the aluminium cover of hot-air pre-heating high-tension cable, prevent the hot blast of a thermoplastic air pressure gun from aluminium cannot be made to overlap full and uniform preheating.
Further, described support is circular, four described thermoplastic air pressure gun along support spaced set on support, the hot blast that each thermoplastic air pressure gun goes out blow to through the circle ring rack center of circle cable aluminium cover surface.Circular support can bear larger external force and indeformable, ensures the work quality of preheating device.
Further, described support is square, and four are arranged at the mid point of support four edges respectively described thermoplastic air pressure gun, and the air-out direction of each thermoplastic air pressure gun is perpendicular to the limit of thermoplastic air pressure gun place support, and the hot blast of each thermoplastic air pressure gun all blows to cable aluminium cover surface.The support of square can ensure to be heated evenly through the aluminium cover of high-tension cable wherein equally, and the support processing of square is simple simultaneously, and production cost is low.
Further, described base comprises expansion link, and described Bracket setting is on the expansion link of base, and expansion link regulates the height of support.The height of adjustable frames, thus the position changing hot blast convergent point, thus adapt to the needs of different production environment.
Technique scheme tool has the following advantages:
By the preheating of this device before the aluminium cover coating pitch oversheath of high-tension cable, aluminium cover is heated evenly, proper temperature, effectively avoids pitch in advance in the surface condensation of aluminium cover.
The present invention discloses the method for a kind of cable aluminium cover preheating device assisted coating cable jacket, comprise the steps, the cable with aluminium cover is released from pay off rack; Use cable aluminium cover preheating device with the aluminium cover of hot-air pre-heating cable; Cable after preheating is immersed the pitch cylinder that hard pitch is housed by front haulage machine travel; After hard pitch in pitch cylinder is coated on the aluminium cover outer surface of cable, cable enters extruder, and extruder is at bitumen layer outer wrapping oversheath, and the bitumen layer that the aluminium of extruded cable puts eliminates the bubble in bitumen layer, makes bitumen layer surfacing; Cable from extruder pass rear immersion be equipped with cooling water tank cooling, the bitumen layer that the aluminium of cable is put and oversheath solid; Until bitumen layer and oversheath solid after, cable passes and is involved in take-up reel by rear haulage machine travel from tank.
Further, when using cable aluminium to overlap the aluminium cover of the pre-electric heating cable of preheating device, the hot blast that the cable that band aluminium overlaps overlaps the thermoplastic air pressure gun of preheating device air outlet through cable aluminium goes out.Cable heats by the hot blast of the thermoplastic air pressure gun air outlet of multiple different azimuth simultaneously, ensures that cable aluminium cover is heated evenly.
Further, the hot-air pre-heating cable aluminium cover of 70 DEG C-90 DEG C is used.Draw through experiment, the pre-heat effect that the hot blast of 70 DEG C-90 DEG C can make aluminium overlap is best, and the temperature that aluminium namely can not be made to overlap still does not reach requirement and causes pitch to condense, and the temperature that also aluminium can not be made to overlap is too high to waste energy and likely causes other problems.This device blows the hot blast of 70 DEG C-90 DEG C to guarantee to provide preheating aluminium to overlap temperature required hot blast.
Technique scheme tool has the following advantages:
After preheating step, the temperature of aluminium cover reaches requirement, can not Yin Wendu is too low causes the pitch when coated with high temperature bitumen layer to overlap the problem of surface condensation, holiday at aluminium.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is the schematic diagram of an embodiment of the present invention;
Fig. 2 is using state figure embodiment illustrated in fig. 1.
Embodiment
Embodiment one
See Fig. 1, preheating device comprises base 1, support 2 and four thermoplastic air pressure gun 3, and support 2 is arranged on base 1, and four are arranged on thermoplastic air pressure gun 3 on support 2 respectively, and four thermoplastic air pressure gun 3 present position by support 2 quartering.The center of circle of the equal subtend support 2 of each air outlet thermoplastic air pressure gun 3, thus four converge to a place the hot blast that thermoplastic air pressure gun 3 goes out.Cable 4 passes the center of circle of support 2 under the traction of outside hauling machine (not shown), i.e. the position of hot blast convergence, thus makes the aluminium cover of cable 4 be subject to Hot-blast Heating from four direction, is heated evenly.
See Fig. 2, cable 4 is by after preheating device preheating, and immersion is equipped with in the pitch cylinder 5 of hard pitch and is applied bitumen layer, and because aluminium cover is preheating to preference temperature, pitch can not overlap surface at aluminium and condense in advance.
Base 1 comprises expansion link 6, and support 2 is arranged on expansion link 6, and the length of adjustable telescopic rod 6 can change the height of support 2, thus adapts to the needs of different production environment.
Circular support 2 can bear larger external force and indeformable, ensures the work quality of preheating device.
Embodiment two
With embodiment one unlike, the support of preheating device is square, four thermoplastic air pressure guns are arranged at the mid point of support four edges respectively, and the air-out direction of each thermoplastic air pressure gun is perpendicular to the limit of the support at thermoplastic air pressure gun place, thus the hot blast that four thermoplastic air pressure guns are gone out converges to a bit equally.The support processing of square is simple, and production cost is low.
Embodiment three
With aluminium cover cable release from pay off rack after, use the preheating device provided in embodiment one or embodiment two with the aluminium cover of the hot-air pre-heating cable of 80 DEG C, cable after the preheating of aluminium cover is equipped with the pitch cylinder of hard pitch by the immersion of front haulage machine travel thus overlaps outer surface hard pitch at the aluminium of cable, after hard pitch in pitch cylinder is coated on the aluminium cover outer surface of cable, cable enters extruder, extruder is at bitumen layer outer wrapping oversheath, and the bitumen layer that the aluminium of extruded cable puts eliminates the bubble in bitumen layer, makes bitumen layer surfacing; Cable from extruder pass rear immersion be equipped with cooling water tank cooling, the bitumen layer that the aluminium of cable is put and oversheath solid; Until bitumen layer and oversheath solid after, cable passes and is involved in take-up reel by rear haulage machine travel from tank.
The process of the aluminium cover of pre-electric heating cable is added in the operation of coating bitumen layer, make aluminium be enclosed within cable to immerse temperature before hard pitch and reach requirement, thus can not because of the too low problem causing when coated with high temperature bitumen layer pitch to overlap surface condensation, holiday at aluminium of aluminium sleeving temperature.
Except above preferred embodiment, the present invention also has other execution mode, and those skilled in the art can make various change and distortion according to the present invention, only otherwise depart from spirit of the present invention, all should belong to the scope that claims of the present invention define.
Claims (3)
1., by the method for cable aluminium cover preheating device assisted coating cable jacket, it is characterized in that: comprise the steps,
(A) cable with aluminium cover is released from pay off rack;
(B) use cable aluminium cover preheating device with the aluminium cover of hot-air pre-heating cable, cable aluminium cover preheating device comprises base, support and at least one thermoplastic air pressure gun, and Bracket setting is on base, and thermoplastic air pressure gun is arranged on support;
(C) cable after preheating is immersed the pitch cylinder that hard pitch is housed by front haulage machine travel;
(D) after the hard pitch in pitch cylinder is coated on the aluminium cover outer surface of cable, cable enters extruder, and extruder is at bitumen layer outer wrapping oversheath, and the bitumen layer that the aluminium of extruded cable puts eliminates the bubble in bitumen layer, makes bitumen layer surfacing;
(E) cable from extruder pass rear immersion be equipped with cooling water tank cooling, the bitumen layer that the aluminium of cable is put and oversheath solid;
(F) until bitumen layer and oversheath solid after, cable passes and is involved in take-up reel by rear haulage machine travel from tank.
2. the method for cable aluminium cover preheating device assisted coating cable jacket according to claim 1, it is characterized in that: when using cable aluminium to overlap the aluminium cover of the pre-electric heating cable of preheating device, the hot blast that the cable that band aluminium overlaps overlaps the thermoplastic air pressure gun of preheating device air outlet through cable aluminium goes out.
3. the method for cable aluminium cover preheating device assisted coating cable jacket according to claim 1 and 2, is characterized in that: the hot-air pre-heating cable aluminium cover using 70 DEG C-90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285420.4A CN103400663B (en) | 2013-07-09 | 2013-07-09 | Aluminum cable sheath preheating device and method for coating outer cable sheath under assistance of aluminum cable sheath preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285420.4A CN103400663B (en) | 2013-07-09 | 2013-07-09 | Aluminum cable sheath preheating device and method for coating outer cable sheath under assistance of aluminum cable sheath preheating device |
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| Publication Number | Publication Date |
|---|---|
| CN103400663A CN103400663A (en) | 2013-11-20 |
| CN103400663B true CN103400663B (en) | 2015-07-15 |
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| CN201310285420.4A Active CN103400663B (en) | 2013-07-09 | 2013-07-09 | Aluminum cable sheath preheating device and method for coating outer cable sheath under assistance of aluminum cable sheath preheating device |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0393115A (en) * | 1989-09-05 | 1991-04-18 | Showa Electric Wire & Cable Co Ltd | Production of cable for high voltage electric appliance |
| CN101685689B (en) * | 2008-09-23 | 2011-08-31 | 江苏亨通线缆科技有限公司 | Hot melt adhesive coating device for aluminum sheath digital signal cable |
| CN202977002U (en) * | 2012-11-20 | 2013-06-05 | 天津德芃科技集团有限公司 | Spiral shielding cable conductor core controllable heater |
| CN203366861U (en) * | 2013-07-09 | 2013-12-25 | 浙江晨光电缆股份有限公司 | Cable aluminum sleeve preheating device |
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| CN103400663A (en) | 2013-11-20 |
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Denomination of invention: Preheating device for aluminum sheath of cable and auxiliary coating method of cable outer sheath with the device Effective date of registration: 20201203 Granted publication date: 20150715 Pledgee: Dushangang sub branch of Zhejiang Pinghu Rural Commercial Bank Co., Ltd Pledgor: ZHEJIANG CHENGUANG CABLE Co.,Ltd. Registration number: Y2020330001100 |
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Date of cancellation: 20210617 Granted publication date: 20150715 Pledgee: Dushangang sub branch of Zhejiang Pinghu Rural Commercial Bank Co., Ltd Pledgor: ZHEJIANG CHENGUANG CABLE Co.,Ltd. Registration number: Y2020330001100 |