CN101958167A - Method for exhausting water inflow of insulated conductor/cable - Google Patents
Method for exhausting water inflow of insulated conductor/cable Download PDFInfo
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- CN101958167A CN101958167A CN 201010504400 CN201010504400A CN101958167A CN 101958167 A CN101958167 A CN 101958167A CN 201010504400 CN201010504400 CN 201010504400 CN 201010504400 A CN201010504400 A CN 201010504400A CN 101958167 A CN101958167 A CN 101958167A
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- cable
- negative pressure
- insulated wire
- wire cores
- water inlet
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Abstract
The invention relates to a method for exhausting the water inflow of an insulated conductor/cable. In the method, moisture is exhausted in the way that a negative pressure air source is connected with the insulated conductor/cable at a water inlet end in a sealing way and the other end of the cable is open so that the negative pressure air flow continuously passes through the insulated conductor/cable and goes outside together with water. The invention is economical, safe and reliable, is suitable for any cable (thickness and length of cables, insulation and thickness of sheath), ensures that the water is pumped directly at the water inlet end, can increase the negative pressure and shorten the water exhaust time. Proven by a test, the exhaust time is only 1/6 to 1/8 of the nitrogen-pressing way in comparison with the cable with the same specification; and the exhaust device has simple structure by only using an ordinary vacuum pump and can be reused.
Description
Technical field
The present invention is the improvement to insulated wire cores/cable water inlet back method for removing, and it is simple, economical to relate in particular to a kind of method, can not produce tympanites, the insulated wire cores that fail safe is good/cable water inlet back method for removing.
Background technology
Insulated wire cores/cable insulation and sheath extrude production and generally adopt continuous vulcanization, continuous vulcanization is to make insulated wire cores or the cable (following general designation cable) that just extrudes rubber-covered or sheath (also can be crosslinked polyethylene), by continuous pressure (for example more than the vapour pressure 0.7-1.0Mpa) steam pipe, vulcanize in high temperature (for example 170-200 ℃) steam, the curing tube rear end passes to a large amount of high pressure (for example 0.7-2.0Mpa) water cooling again.Objectively because of between stranded conductor, between each core of stranding, all have the gap between cable core and sheath, add sulfuration steam pressure height, very easily cause cable in sulfidation, steam immerses and longitudinal extension from port, cause cable water inlet, its length to reach about 100 meters (length and sulfuration, cooling water pipe length suitable substantially) usually.The cable water inlet has a strong impact on quality, for example causes the copper conductor oxidation, seriously will draw security incident.Prior art more all adopts and cuts off this section cable, causes the cable waste like this, and is serious especially for big specification cable waste especially.
Chinese patent CN2354217 cable dryer is put into drying baker by the cable of will intaking and is charged into the dry heat air-flow, gets rid of moist moisture content in the cable external.This method can only be used for short length insulated wire cores/cable at most, and for length, big specification, then because one-tenth dish specification is bigger, thereby has increased drying baker volume and heating energy source, and economy is not as good as cutting off the infiltration cut cable; Secondly, actual production shows that oven dry is difficult to all discharge steam, if the too high infringement that also can cause insulation, sheath of temperature.
Chinese patent CN101394069 incoming water of crosslinked polyethylene insulation power cable method for removing is by (1～2.5MPa) is blown into nitrogen takes wherein steam out of to cable pressure.This method not only cost is bigger, for the length cable, need to feed more nitrogen, and because of core or cable extruded insulation or sheath are tighter, adds the length relatively difficulty of blowing, cause consuming time longer, φ 15mm cable for example, 0.3Mpa air pressure needs about 24 hours; Cause very easily that again insulated wire cores or cable tympanites break until insulation, sheath if strengthen blow gas pressure, thus blow gas pressure be limited can not be too high, φ 15mm cable for example, blow gas pressure should not surpass 0.3Mpa.Blow gas pressure is low, and to cause discharging the steam time long, usually at 24-30 hour; Secondly, this method is difficult to use owing to the slit is minimum for minor diameter, length, compact conductor cable; In addition, for thin insulating, thin jacket insulation core/cable, because of cause tympanites easily, this method of breaking can not adopt.Besides, the band water of blowing requires very dry with nitrogen, otherwise influence band gas effect uses the drying nitrogen cost higher.Therefore in the actual industrial production, though this method has some shortcomings, still not having other better methods at present, still is the draining way of steam of the more employing of cable enterprise, and has failed other better modes all the time and broken through report.Above-mentioned deficiency still has is worth improved place.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of simple and reliable, and economy, fail safe are good, to the insulated wire cores/cable water inlet back method for removing of insulated wire cores/cable without any damage.
The object of the invention realizes, the main improvement is to adopt to take the steam mode out of in the suction of water inlet end negative pressure and get rid of the cable water inlet, reaches both easy economy, the draining way of steam that fail safe is good again, thus overcome the deficiencies in the prior art, realize the object of the invention.Specifically, insulated wire cores of the present invention/cable water inlet back method for removing, comprise by passing insulated wire cores/cable gas and take steam out of, it is characterized in that passing gas is negative pressure air, its method is that negative pressure source is connected with water inlet end insulated wire cores/cable seal, insulated wire cores/cable the other end keeps opening, makes to continue to pass through insulated wire cores/cable by negative pressure air stream and carry steam secretly and discharge.
Insulated wire cores of the present invention/cable water inlet back method for removing, with respect to prior art, owing to adopt negative pressure suction mode, directly adopting air will enter cable steam obtains discharging, not only economical, only need to adopt the vacuum pump continuous air extraction get final product, the gas of band steam is the air of not spending, and does not need to adopt separately price height and can not reusable drying nitrogen; And this method is safe and reliable, can not play bulge as blowing, and more can not cause any damage to cable insulation and/or sheath, thereby go for any cable (cable thickness, length, insulation and sheath thickness all can be suitable for).And be directly to aspirate at water inlet end, and the suction negative pressure can strengthen, can regulate arbitrarily according to discharging the steam situation, for example initial stage steam is many can adopt low relatively vacuum degree suction, later stage steam reduces, then can adopt the high relatively suction of vacuum degree, or intermittence becomes the negative pressure suction, save draining vapour energy consumption thereby reach, and can shorten the draining vapour time, through test contrast same specification cable, negative pressure suction draining vapour time weak point only needs 6-8 hour, be shorter than the nitrogen insufflation greatly, test the average draining vapour time only for to be pressed into about the 1/6-1/8 of nitrogen mode.Besides, draining vapour equipment is simple, and is different with length according to cross-section of cable size as long as adopt the conventional vacuum pump, selects different vacuum degrees and speed of exhaust vacuum pump, and equipment can be reused, and only needs aspiration end to connect sealing in the use and get final product.The inventive method economy, reliable, safety, time weak point are its maximum feature places.
Below in conjunction with an exemplary embodiment; essence of the present invention is further understood in exemplary illustration and help; but the embodiment detail only is for the present invention is described; do not represent the present invention to conceive whole technical schemes down; therefore should not be construed as the total technical scheme of the present invention is limited; some are In the view of the technical staff; the unsubstantiality that does not depart from the present invention's design increases and/or change; for example simple the change or replacement of technical characterictic to have same or similar technique effect all belongs to protection range of the present invention.
Embodiment
Embodiment: getting conductor diameter is 11.7mm, and the insulation external diameter is 800 meters of the water inlet cores of 14.5mm, carries out positiver sealing with 1.2kw vacuum pump and cable water inlet end and is connected, core other end maintenance opening.Open vacuum pump, revolution speed reaches 200～250r/min and bleeds, and speed of exhaust 1.5L/S sees that just air carrying secretly outside the steam excavationg pump, discharges until no steam to stop negative pressure and aspirate, and whole process is about 6 hours, power consumption 7.2kwh.And adopt pressure nitrogen gas band steam, then need be with 3 bottled drying nitrogens of industrial oxygen bottle, about 2 days draining vapour time.
After the multicore cable water inlet, can adopt said method to discharge equally and enter steam.
The suction of employing variable Rate can also be shortened the draining vapour time.
To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the equivalence of feature changes or modification; mutual various combination between feature; for example the speed of exhaust changes, the change of the negative pressure source mode of bleeding, or the like unsubstantiality change; can be employed equally; can both realize this patent representation function and effect, launch for example no longer one by one to describe in detail, all belong to this patent protection range.
The said core of the present invention is meant the insulated wire cores of extruded insulation; Said cable is meant the multicore cable after two or above insulated wire cores stranding extrude sheath.
Claims (2)
1. method for removing after insulated wire cores/cable is intake, comprise by passing insulated wire cores/cable gas and take steam out of, it is characterized in that passing gas is negative pressure air, its method is that negative pressure source is connected with water inlet end insulated wire cores/cable seal, insulated wire cores/cable the other end keeps opening, makes to continue to pass through insulated wire cores/cable by negative pressure air stream and carry steam secretly and discharge.
2. according to the described insulated wire cores of claim/cable water inlet back method for removing, it is characterized in that the negative pressure suction is the variable Rate suction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010504400 CN101958167A (en) | 2010-10-09 | 2010-10-09 | Method for exhausting water inflow of insulated conductor/cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010504400 CN101958167A (en) | 2010-10-09 | 2010-10-09 | Method for exhausting water inflow of insulated conductor/cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101958167A true CN101958167A (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010504400 Pending CN101958167A (en) | 2010-10-09 | 2010-10-09 | Method for exhausting water inflow of insulated conductor/cable |
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| CN (1) | CN101958167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930940A (en) * | 2012-11-13 | 2013-02-13 | 江苏亨通线缆科技有限公司 | Cable drying device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1574108A (en) * | 2003-05-27 | 2005-02-02 | 株式会社自动车电网络技术研究所 | Earthing electric wire and water-stopping method therefor |
| JP2006221880A (en) * | 2005-02-08 | 2006-08-24 | Auto Network Gijutsu Kenkyusho:Kk | Suction tool for water cut-off treatment, and water cut-off treatment method of vehicle-mounted electric wire using the same |
| CN101290823A (en) * | 2008-05-26 | 2008-10-22 | 常熟市中联光电新材料有限责任公司 | Annealing and cooling device for conductive wire |
| CN101394069A (en) * | 2008-11-04 | 2009-03-25 | 江苏圣安电缆有限公司 | Removing method for incoming water of crosslinked polyethylene insulation power cable |
| CN201562502U (en) * | 2009-09-03 | 2010-08-25 | 杭州临安通达电缆有限公司 | Water removing apparatus of cable production line |
-
2010
- 2010-10-09 CN CN 201010504400 patent/CN101958167A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1574108A (en) * | 2003-05-27 | 2005-02-02 | 株式会社自动车电网络技术研究所 | Earthing electric wire and water-stopping method therefor |
| JP2006221880A (en) * | 2005-02-08 | 2006-08-24 | Auto Network Gijutsu Kenkyusho:Kk | Suction tool for water cut-off treatment, and water cut-off treatment method of vehicle-mounted electric wire using the same |
| CN101290823A (en) * | 2008-05-26 | 2008-10-22 | 常熟市中联光电新材料有限责任公司 | Annealing and cooling device for conductive wire |
| CN101394069A (en) * | 2008-11-04 | 2009-03-25 | 江苏圣安电缆有限公司 | Removing method for incoming water of crosslinked polyethylene insulation power cable |
| CN201562502U (en) * | 2009-09-03 | 2010-08-25 | 杭州临安通达电缆有限公司 | Water removing apparatus of cable production line |
Non-Patent Citations (1)
| Title |
|---|
| 《山西焦煤科技》 20060430 郭记平 交联聚乙烯电缆除水干燥处理技术 , 第04期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930940A (en) * | 2012-11-13 | 2013-02-13 | 江苏亨通线缆科技有限公司 | Cable drying device |
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Application publication date: 20110126 |