CN104201622B - A kind of prefabricated class intermediate joint of electric cable erecting device and method - Google Patents
A kind of prefabricated class intermediate joint of electric cable erecting device and method Download PDFInfo
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- CN104201622B CN104201622B CN201410461780.XA CN201410461780A CN104201622B CN 104201622 B CN104201622 B CN 104201622B CN 201410461780 A CN201410461780 A CN 201410461780A CN 104201622 B CN104201622 B CN 104201622B
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- inflatable
- pipe
- inflatable dilatation
- dilatation pipe
- cable
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Abstract
The invention discloses a kind of prefabricated class intermediate joint of electric cable erecting device, including：Inflatable dilatation pipe, quick source of the gas and pull-out band, expansion pipe upper end are provided with inflatable interface, are connected with quick source of the gas, and inner side is provided with pull-out band.Also disclose a kind of prefabricated class intermediate joint of electric cable installation method：Inflatable dilatation pipe surface is smeared into lubricant, transition joint endoporus smears lubricant, expansion pipe is loaded into transition joint endoporus；Transition joint is inflated predilation with inflatable dilatation pipe, then set is attached on a cable；Inflatable dilatation pipe and quick source of the gas are connected, to inflatable dilatation pipe inner inflatable；The blowing pressure is adjusted, pipe inflation is expanded, transition joint is deformed endoporus support and is completely nested on cable greatly；By two cable connections, by expansion pipe and transition joint running fix；Pipe will be expanded in inner side to be pulled out by pulling out band, completes suit.The problem of present invention solves influence joint installation quality big due to frictional force, equipment is simply light, easy for installation.
Description
Technical field
The present invention relates to cable connecting arrangement in power industry, particularly a kind of prefabricated class intermediate joint of electric cable is installed
Device and method.
Background technology
In power circuit, the proportion shared by cable just gradually increases.Lead line in Urban Underground power network, power station,
The in-line power of industrial and mining enterprises and the submarine transmission of crossing river and sea etc. have a wide range of applications.Cable accessory is used as power cable
Line technology bottleneck portion, by manufacturing and mounting process is influenceed, fault rate is accounted on the 90% of cable run.
Silicon rubber or ethylene propylene diene rubber used for prefabricated type cable accessory are injected into different components, and a sulfidization molding is only protected
Contact interface is stayed, the annex for inserting cable when constructing at the scene and being made.The construction technology by environment it is immesurable it is unfavorable because
Element is reduced to minimum level, therefore the annex has huge potential use value, is the developing direction of cable accessory,
Prefabricated class electric cable fitting and the cable insulation magnitude of interference are excessive, and cable accessory installs extremely difficult (technological requirement
It is high).The outstanding problem especially in transition joint, installs both inconvenient, and usually turn into trouble point.
Prefabricated class transition joint, which is installed, at present mainly two methods：1st, live predilation.2nd, pulled in by force with thruster.
There are many hidden danger in both approaches：
1st, predilation mode, because profitization is bad, can pull rubber parts endoporus, form cut, have a strong impact on product matter
Amount and longtime running.
2nd, expansion difficulty in scene is big, and equipment is complicated heavy.
3rd, during predilation often due to site environment is poor, interface cleanness degree is made not reach requirement.
4th, pulled in by force using thruster, installation is wasted time and energy, and the life-span of annex is caused to have a strong impact on.
The content of the invention
In order to solve the above technical problems, the specific technical scheme of the present invention is as follows：
A kind of prefabricated class intermediate joint of electric cable erecting device, including：Inflatable dilatation pipe, aerating device and it is located at inflation
Expand the n bars on the inside of pipe and pull out band, n >=1；One end of the inflatable dilatation pipe is provided with inflatable interface, and the other end is pulled out with described
One end connection of band, the aerating device is connected by inflatable interface with the inflatable dilatation pipe.
Further, the inflatable dilatation pipe is pipe wall hollow structure, surfaces externally and internally spraying coating.
Further, the inflatable dilatation pipe is constituted using double layer fibre fabric.
Further, the band that pulls out is six, is distributed on the inside of the inflatable dilatation pipe, is drawn on the inside of the expansion pipe
Go out.
Further, the pull-out band is when pulling out, and inflatable dilatation tube end bears pressure, slides in and out inflatable dilatation pipe
Pull out.
Further, there are controlled valve and pressure-speed regulating device on the inflatable interface
A kind of prefabricated class intermediate joint of electric cable installation method, above-mentioned prefabricated class intermediate joint of electric cable installs dress
Put, comprise the following steps：
Step 1：Inflatable dilatation pipe is inflated in advance, certain rigidity is made it have；
Step 2：Inflatable dilatation pipe is put into transition joint endoporus；
Step 3：The blowing pressure is adjusted, makes expansion pipe inflation, inflatable dilatation pipe and transition joint is completely nested
On a piece cable；
Step 4：By two cable core conductor crimpings；
Step 5：Inflatable dilatation pipe and transition joint are moved to two cable crimping centers；
Step 6：Inflatable dilatation pipe is pulled out by pull-out band, transition joint is coated on cable.
Further, in the step 1, inflatable dilatation pipe surface smears lubricant, and transition joint endoporus smears lubricant.
Compared with prior art, the invention has the advantages that：
The present invention allows the slip relative with transition joint of inflatable dilatation pipe, solves well due to lubricating bad friction
Power it is big influence joint installation quality the problem of, equipment is simply light, easy for installation laborsaving time saving.
Brief description of the drawings
Fig. 1 is the embodiment of the present invention and structural representation.
Embodiment
For make present invention solves the technical problem that, technical scheme and advantage it is clearer, carried out below in conjunction with accompanying drawing detailed
Thin description.
As shown in figure 1, a kind of prefabricated class intermediate joint of electric cable erecting device, including：Inflatable dilatation pipe 3, inflation dress
Put 5 and be located at 6 pull-out bands 6 of the inner side of inflatable dilatation pipe 3；One end of inflatable dilatation pipe 3 is provided with inflatable interface 4, inflatable dilatation
The tube wall of pipe 3 is hollow structure, surfaces externally and internally spraying coating, using double layer fibre fabric.The other end of inflatable dilatation pipe 3 is with pulling out
With the connection of 6 one end, it is six to pull out band 6, is distributed on the inner side of inflatable dilatation pipe 3, is drawn on the inside of expansion pipe.Inflation dress
5 are put by inflatable interface 4 with the inflatable dilatation pipe 3 to be connected.There are controlled valve and variable voltage control dress on fast aeration interface 4
Put.
Prefabricated class intermediate joint of electric cable installation method, is installed applied to above-mentioned prefabricated class intermediate joint of electric cable
Device, comprises the following steps：
So that the full core ac cable transition joints of shrinkage three of 10kv are installed as an example.
Cable pretreatment is carried out first：Cable correction is straightened into position, determined by different use requirements by cable stripping chi
It is very little, cable jacket is peeled off, long end peels off 800 millimeters, and short end peels off 600 millimeters.
Cleaning two ends are no less than 50 millimeters of cable cover(ing) respectively, and dirt is wiped away.30 millis are left and taken outward from sheath port
Rice steel armour is bundled with iron wire and fixed, and remaining is divested.
From steel armour fracture outward, 100 millimeters are measured on sheath, remaining inner sheath is divested.Filler is cut away, core is separated
Line.
50 millimeters are left and taken on outer semiconductive layer from copper shield upper end, remaining is peeled off with PVC windings mark.From every cored wire end
Downwards, the general length of intermediate connections is gone, removes insulating barrier and exposes wire, 45 degree of grooves is cut out in insulating barrier incision position, uses sand
Paper is polished smooth.Each phase insulating barrier and copper conductor are cleaned with cable cleaning paper, stripping is completed two end cables simultaneously in the same way.
Step 1：Inflatable dilatation pipe 3 is inflated in advance from inflatable interface 4 with aerating device 5, certain rigidity is made it have, can be with
Conveniently it is put into transition joint endoporus；
Step 2：Inflatable dilatation pipe 3 is put into the endoporus of transition joint 2；
Step 3：Adjust aerating device 5 the blowing pressure, make the inflation of expansion pipe 3, by inflatable dilatation pipe 3 and in indirectly
First 2 are completely nested onto a cable；
Step 4：By anticipated two cable core conductor crimpings, connected with copper connecting tube, semiconductive set and band
It is fixed；
Step 5：Inflatable dilatation pipe 3 and transition joint are moved to the center of two cable crimping；
Step 6：Inflatable dilatation pipe 3 is deflated, is pulled out by pull-out band 6, transition joint is coated on cable.Pull out band 6
When pulling out, pressure is born in the end of inflatable dilatation pipe 3, inflatable dilatation pipe 3 is slid in and out pull-out, expansion pipe 3 and prefabricated centre
Joint 2 is relative to be slided, and pullout forces are about 1~2 ton.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as the protection domain of invention.
Claims (2)
1. a kind of prefabricated class intermediate joint of electric cable erecting device, it is characterised in that including：Inflatable dilatation pipe (3), inflation dress
The n bars put (5) and be located on the inside of inflatable dilatation pipe (3) pull out band (6), n >=1；The inflatable dilatation pipe (3) is pipe wall hollow knot
Structure, surfaces externally and internally spraying coating, the inflatable dilatation pipe (3) is constituted using double layer fibre fabric；
One end of the inflatable dilatation pipe (3) is provided with inflatable interface (4), and the other end is connected with described one end for pulling out band (6), institute
Aerating device (5) is stated by inflatable interface (4) with the inflatable dilatation pipe (3) to be connected；
The band (6) that pulls out is when pulling out, and pressure is born in inflatable dilatation pipe (3) end, inflatable dilatation pipe (3) is slid in and out drawing
Go out；
There are controlled valve and pressure-speed regulating device on the inflatable interface (4).
2. a kind of prefabricated class intermediate joint of electric cable installation method, it is characterised in that：Using prefabricated according to claim 1
Class intermediate joint of electric cable erecting device, comprises the following steps：
Step 1：Inflatable dilatation pipe surface is smeared into lubricant, transition joint endoporus smears lubricant；By inflatable dilatation pipe preliminary filling
Gas, makes it have certain rigidity；
Step 2：Inflatable dilatation pipe is put into transition joint endoporus；
Step 3：The blowing pressure is adjusted, makes inflatable dilatation pipe inflation, inflatable dilatation pipe and transition joint is completely nested
On a piece cable；
Step 4：By anticipated two cable core conductor crimpings, it is connected with copper connecting tube, semiconductive set and band；
Step 5：Inflatable dilatation pipe and transition joint are moved to two cable crimping centers；
Step 6：Inflatable dilatation pipe is deflated, inflatable dilatation pipe is pulled out by pull-out band, transition joint is coated on cable；Draw
Go out band in pull-out, inflatable dilatation tube end bears pressure, inflatable dilatation pipe is slid in and out pull-out, inflatable dilatation pipe with it is prefabricated
Transition joint is relative to be slided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410461780.XA CN104201622B (en) | 2014-09-11 | 2014-09-11 | A kind of prefabricated class intermediate joint of electric cable erecting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410461780.XA CN104201622B (en) | 2014-09-11 | 2014-09-11 | A kind of prefabricated class intermediate joint of electric cable erecting device and method |
Publications (2)
| Publication Number | Publication Date |
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| CN104201622A CN104201622A (en) | 2014-12-10 |
| CN104201622B true CN104201622B (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410461780.XA Active CN104201622B (en) | 2014-09-11 | 2014-09-11 | A kind of prefabricated class intermediate joint of electric cable erecting device and method |
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| CN107433706A (en) * | 2016-05-27 | 2017-12-05 | 浙江正泰电缆有限公司 | A kind of method of PE cables inflatable type sheathing |
| CN106015148B (en) * | 2016-08-04 | 2017-12-08 | 江苏智光创业投资有限公司 | The positive and negative hydraulic driver of shrinkage cable sealing cap installation tool |
| CN107069641B (en) * | 2017-04-17 | 2018-10-26 | 苏州鼎鑫冷热缩材料有限公司 | A kind of silicon rubber cold-shrinkable terminal |
| CN106911115B (en) * | 2017-04-17 | 2018-10-26 | 苏州鼎鑫冷热缩材料有限公司 | A kind of crosslinking with radiation thermal shrinkage type cable accessory |
| CN106848993B (en) * | 2017-04-17 | 2018-10-26 | 苏州鼎鑫冷热缩材料有限公司 | A kind of cold-contraction type outdoor terminal |
| CN107274981B (en) * | 2017-07-07 | 2023-07-11 | 长园电力技术有限公司 | Simulation cable for cable accessory test and detection method of cable accessory |
| CN107799238A (en) * | 2017-09-12 | 2018-03-13 | 中国科学院长春光学精密机械与物理研究所 | A kind of bundle conductor wears heat-shrink tube method |
| CN112186657B (en) * | 2020-10-13 | 2022-06-07 | 长缆电工科技股份有限公司 | Method for installing cable intermediate joint |
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| CN101814710A (en) * | 2009-02-19 | 2010-08-25 | 泉州七星电气有限公司 | Method for previously expanding thermal shrinkage type busbar protection sleeve by cloth bag |
| CN201466661U (en) * | 2009-07-17 | 2010-05-12 | 保定合力达电缆附件有限公司 | Cold-shrinking intermediate joint |
| US8502076B2 (en) * | 2010-01-22 | 2013-08-06 | Richards Manufacturing Company | Cold shrinkable secondary splice |
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|---|---|---|---|---|
| CN1067492A (en) * | 1991-06-04 | 1992-12-30 | 明尼苏达采矿制造公司 | Protective sleeve pipe and the method for guarded object being installed the protective sleeve pipe |
| CN2519513Y (en) * | 2001-12-10 | 2002-10-30 | 绵阳市英联高新技术有限责任公司 | Normal temperature shrinkage type power cable intermediate joint |
| CN1558427A (en) * | 2004-01-19 | 2004-12-29 | 长沙电缆附件有限公司 | Method for mounting rubber type power cable accessory and apparatus thereof |
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| Publication number | Publication date |
|---|---|
| CN104201622A (en) | 2014-12-10 |
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