CN1131750A - Method of anchoring self-support optical cable - Google Patents
Method of anchoring self-support optical cable Download PDFInfo
- Publication number
- CN1131750A CN1131750A CN 95116190 CN95116190A CN1131750A CN 1131750 A CN1131750 A CN 1131750A CN 95116190 CN95116190 CN 95116190 CN 95116190 A CN95116190 A CN 95116190A CN 1131750 A CN1131750 A CN 1131750A
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- China
- Prior art keywords
- insulator
- self
- sea water
- water resistance
- air
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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
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/48—Overhead installation
- G02B6/483—Installation of aerial type
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulators (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention relates to a seawater-proof-air insulation for anchoring a self-supporting optical cable hanging under a transfer line and basically paralleling the transfer line to an overhead tower; the arrangement of the seawater-proof-air insulation leads the axes of the optical cable to be basically stay in vertical direction. The insulation consists of a fixed rod and an insulation body which is arranged around the fixed rod and forms a deep fold with a downward opening. Two positions along the axial direction of the self-supporting optical cable are buttoned up by a pair of wire clips connected by a connecting piece. The two axial positions of the connecting piece are fixed to lead each axial line of a pair of insulations to be basically stayed in the vertical direction while the top ends of the insulations hang on the overhead tower.
Description
The present invention relates to a kind of grappling is suspended on below the power transmission line and the method for parallel with it self-support cable basically.
As shown in Figure 1, power transmission line is suspended between the built on stilts tower 2.Sometimes, it is following and parallel with it basically that self-support cable 3 is suspended on power transmission line 1.
Self-support cable 3 is anchored on the built on stilts tower 2 by metal wire clamp 4.
Be suspended on below the power transmission line and parallel with it basically self-support cable is in the powerful electromagnetic field in top mode.Be arranged in the self-support cable of so powerful electromagnetic field, the final carbonization in its surface, the result produces the electric leakage problem.
Promptly, when the self-support cable that is arranged in powerful electromagnetic field owing to the atmosphere pollution that particularly contains salt, rainwater or moisture etc. when month after month deposition becomes conduction all the year round, can between power transmission line and self-support cable, form static and combine, thereby make terrestrial current flow to the surface of self-support cable.If the heat of electric current generation makes the dry tack free of self-support cable thus, then current channel is interrupted, thereby forms arid region electric arc in this section., the high heat of this electric arc generation, the surface of self-support cable forms electric leakage (tracking) because finally being carbonized.
This carbonization of self-support cable reduces the insulating property of self-support cable, in some cases, also can cause the phenomenon of self-support cable burning.
As the method that prevents that this electric leakage from forming, considered with the method for the better material of its anti-electric creepage performance, promptly between the metal wire clamp of fixing self-support cable and built on stilts tower, put into the method for anti-anti-insulator with the current channel that interrupts flowing to the self-support cable surface etc. as the self-support cable insulating material.
Yet, problem be with anti-electric creepage performance relatively excellent material as the insulating material expense of self-support cable than higher, and promptly use this material can not prevent the generation of leaking electricity fully.
In addition, can expect between the metal wire clamp of fixing self-support cable and built on stilts tower, to put into the method for strain insulator with the current channel on the surface of interrupting flowing to self-support cable, at effective interruptive current of all time, but, problem is when the strain insulator knot is dirty or moist, electric current can flow to insulator surface, thereby the surface that makes effective prevention terrestrial current flow to self-support cable becomes impossible.
Above-mentioned reason it is believed that can set up is because strain insulator is horizontally disposed with basically, and its dirty and easy humidity of whole surface meeting is so terrestrial current finally flows upward to the surface of insulator.
The present invention under the circumstances, and the purpose of a kind of method of anchoring self-support optical cable as it is provided, this method makes the dirt of strain insulator resistive connection, thus terrestrial current is difficult to flow to the surface of insulator.
To achieve these goals, the method of anchoring self-support optical cable of the present invention is made of following content: being suspended on below the power transmission line and parallel with it basically self-support cable is anchored to built on stilts tower, and the insulator of sea water resistance-air is arranged to their axis with the insulator of sea water resistance-air on the direction of approximate vertical.
Preferably, with the insulator of dark pleat formula sea water resistance-air insulator as this sea water resistance-air, this sea water resistance-air insulator is made up of a fixed bar and an insulator body, and this insulator body is arranged to around the side face of this fixed bar and is formed with downward opening dark pleat.
Preferablely be, axial two positions of self-support cable are fastened by a pair of wire clamp, these wire clamps are connected by a web member, axial two stationkeeping of this web member must make this to each axis of sea water resistance-air insulator basically in vertical direction, and the top of each hangs down from built on stilts tower.
Insulator with sea water resistance-air is anchored to built on stilts tower to self-support cable, simultaneously the insulator of sea water resistance-air is arranged on the direction of a perpendicular, just can prevent insulator all surface knot dirt of sea water resistance-air or the like.That is, because sea water resistance-air insulator is formed with dark pleat as everyone knows like that, in addition, and further, because sea water resistance-air insulator is arranged on vertical haply direction, so the insulator all surface of sea water resistance-air can not tied dirt.Even knot is dirty, pollutant also easily falls in vertical direction.Therefore, the insulation resistance of the insulator of sea water resistance-air can descend hardly, and terrestrial current can not flow to the surface of sea water resistance-air insulator, therefore, finally can avoid electric current flowing to the surface of self-support cable.So, just can effectively prevent electric leakage.
Note, when the insulator of sea water resistance-air is arranged on that the direction of level is come anchoring self-support optical cable haply, the dark pleat inboard of sea water resistance-air insulator becomes and is easy to tie dirty and easily gathering filth, thus insulation resistance decline, and electric current easily flows to the surface of self-support cable.
By below in conjunction with the description of accompanying drawing to preferred embodiment, these and other purposes of the present invention and characteristics will become more clear, wherein:
Fig. 1 is the synoptic diagram of self-support cable suspension status;
Fig. 2 is the synoptic diagram of a method key component of anchoring self-support optical cable according to an embodiment of the invention;
Fig. 3 one is used in the half-sectional view of the sea water resistance-air insulator among Fig. 2;
Fig. 4 is the cross-sectional view of self-support cable example among Fig. 2;
Fig. 5 is the key component synoptic diagram of anchoring self-support optical cable one method of another embodiment of the present invention;
Fig. 6 is the key component synoptic diagram of anchoring self-support optical cable one method of another embodiment of the present invention; And
Fig. 7 is the chart of an expression sea water resistance-air insulator effect.
Below in conjunction with the description of drawings embodiments of the invention.
Embodiment shown in Figure 2 illustrates the applicable cases of the present invention to Nai Lata.
As shown in Figure 2, form the anchor site (two axial positions) that metal wire clamp 4,4 is connected in self-support cable 3 by for example aluminium alloy.The distance L that 3 two of self-support cables are anchored between the position is not subjected to special restriction, but such as 200 to 600 meters.
Self-support cable 3 is not subjected to special restriction, but such as the optical cable of available cross-sectional structure shown in Figure 4.Self-support cable 3 have four its be built-in with the separator tube 22 of multifiber dimension 20.Be covered with an interpolymer foreskin (inner poly-mer sheath) 24 around these separator tubes 22.Be enclosed in the outer circumference surface of interpolymer foreskin 24 such as an aromatic poly amide line reinforcement 26.The outer circumference surface of reinforcement is covered by a cable foreskin 28 again.
As shown in Figure 2, fixedly insulator 6,6 and the T shape part 7 of the metal wire clamp 4,4 of the three-dimensional optical cable of self-bearing type by jointing 5,5, sea water resistance-air is anchored to built on stilts tower 2.The total of built on stilts tower 2 similar to shown in Fig. 1.
In this embodiment, as shown in Figure 3, sea water resistance-air insulator 6 is a kind of dark pleat formula sea water resistance-air insulator 6, and it is connected in the insulator body 12 that fixed bar 10 and at the web member shown in Fig. 28 is formed with downward opening dark pleat by its lower end and forms.Be made up of malleable cast iron such as fixed bar 10,12 of the bodies of anti-the insulator are made up of pottery.Filling material 16 lumps together the top junction of insulator 12 and fixed bar 10.Make erection joint 14 be connected in insulator body 12 tops with filling material 16.Filling material 16 is not subjected to special restriction, but such as using cement.Erection joint 14 is made up of the material similar to fixed bar 10, and is connected in T shape part 7 shown in Figure 2.
This method according to grappling, the axis of insulator 6,6 is haply in vertical direction, so, the inboard resistive connection dirt of the dark pleat of sea water resistance-air insulator, insulating property can not reduce, and terrestrial current will can not pass sea water resistance-air insulation surface and flow to built on stilts tower.Therefore, owing to can prevent that electric current from flowing to the surface of self-support cable, just can effectively prevent the generation of leaking electricity.
Fig. 5 is the front view of another embodiment of anchoring self-support optical cable one method of the present invention.
The difference of this embodiment and the foregoing description is that sea water resistance- air insulator 6,6 hangs over two positions of built on stilts tower 2, and is provided with to such an extent that make the axis of insulator form a v-shaped structure.For insulator 6,6 is set by this way, their top is connected with built on stilts tower 2 by erection joint 7a, 7a.
Note Fig. 5, the part identical with Fig. 2 no longer illustrates at this with identical numbering.
Even sea water resistance- air insulator 6,6 of being arranged to v-shaped structure is hung over two positions of built on stilts tower 2, their all surface can not tied dirt yet, so, terrestrial current will can not pass to sea water resistance-air insulation surface and flow to built on stilts tower, just can avoid electric current to flow to the surface of self-support cable, thereby can effectively prevent the generation of leaking electricity.
Fig. 6 illustrates another embodiment of the present invention.Embodiment shown in Figure 6 has single insulator 6 and web member 8 that is fixed on insulator 6 lower ends that down is hung on built on stilts tower 2 by an erection joint 7b.In addition, with mode anchoring self-support optical cable same as the previously described embodiments.
Equally in this embodiment, present effect similar to the aforementioned embodiment, but from the stability of anchor site, above-mentioned two embodiment are better.
Notice the foregoing description, the applicable cases of the present invention to Nai Lata has been described, but the present invention can also be applied to terminal tower by the same manner.
In addition, sea water resistance-air insulator is not subjected to special restriction with respect to the angle that is provided with of approximate vertical direction.It can be-the individual rain etc. that prevents enters the angle of the dark pleat of sea water resistance-air insulator inboard, especially, if the axis of insulator 6 and the angle between the vertical direction are in approximately ± 45 °, insulator is gone up substantially in vertical direction, thereby reaches initial purpose of the present invention.
As mentioned above, the method for anchoring self-support optical cable of the present invention comprises: with sea water resistance-air insulator self-support cable is anchored to built on stilts tower; Simultaneously sea water resistance-air insulator is arranged on vertical substantially direction.Therefore, can avoid all surface knot of sea water resistance-air insulator dirty, not have electric current to flow to its surface, final, can avoid electric current to flow to the surface of self-support cable, so can effectively prevent the generation of leaking electricity.
Next will the present invention be described according to more specific example, where face all is not limited to these examples but the present invention is in office.
Example 1
As shown in Figure 7, using an external diameter is 375 millimeters sea water resistance-air insulator of being made by KAWASO TEXCEL company limited, its axis is arranged on vertical direction, and from bottom to top sprays insulator with a dirty solution (salt percentage by weight be 3% and to polish the powder percentage by weight be 4% aqueous solution) with the speed of miter angle, 1 millimeter/square centimeter per minute in a test jet chamber.One used 6600V (ground 4000V) line voltage applies 3 minutes, measures electric leakage, measurement insulation resistance then, and it the results are shown in Fig. 7.
Insulation resistance does not almost descend when as shown in Figure 7, having confirmed with sea water resistance-air insulator.
Comparative example 1
Except using structure shown in Figure 7, external diameter is 235 millimeters the common insulator of being made by KAWASOTEXCEL company limited, adopts the step identical with example 1, to investigate the decline of insulation resistance.As shown in Figure 7, confirmed the superiority of the sea water resistance-air insulator of example 1.
Comparative example 2
Except using structure shown in Figure 7, external diameter is 135 millimeters the common insulator of being made by KAWASOTEXCEL company limited, adopts the step identical with example 1, to investigate the decline of insulation resistance.As shown in Figure 7, confirmed the superiority of the sea water resistance-air insulator of example 1.
Experiment
The insulation resistance of two kinds of situations relatively after 1 hour: the sea water resistance-air insulator that is used in example 1 is arranged on horizontal direction and from the situation of the dirty solution of horizontal direction injection; The situation that sea water resistance-air insulator is arranged on vertical direction and sprays dirty solution from horizontal direction.After 1 hour, the sea water resistance of vertical direction setting-air insulator insulation resistance is 900M Ω, and sea water resistance-air insulator insulation resistance that horizontal direction is provided with then is 35M Ω.The decline that has confirmed vertically disposed insulator insulation resistance is quite little.That is, confirmed superiority of the present invention.
Claims (3)
1. the method for an anchoring self-support optical cable, comprise: being suspended on below the power transmission line and parallel with it basically self-support cable is anchored to built on stilts tower with sea water resistance-air insulator, described sea water resistance-air insulator be provided with make it axis basically in vertical direction.
2. the method for anchoring self-support optical cable as claimed in claim 1 is characterized in that,
As described sea water resistance-air insulator, and described sea water resistance-air insulator is provided with and the insulator body that is formed with downward opening dark pleat is formed around fixed bar periphery by a fixed bar and with dark pleat formula sea water resistance-air insulator.
3. the method for anchoring self-support optical cable as claimed in claim 1 or 2 is characterized in that,
Axial two positions of described self-support cable are fastened by a pair of wire clamp; These wire clamps are connected by a connection piece; Two positions that fixed connecting piece is axial, each the axis that makes a pair of sea water resistance-air insulator is basically in vertical direction; And the top of described each sea water resistance-air insulator is hung on built on stilts tower.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP280007/94 | 1994-10-19 | ||
| JP280007/1994 | 1994-10-19 | ||
| JP28000794A JP2907379B2 (en) | 1994-10-19 | 1994-10-19 | Termination method of self-supporting optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1131750A true CN1131750A (en) | 1996-09-25 |
| CN1102749C CN1102749C (en) | 2003-03-05 |
Family
ID=17619011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95116190 Expired - Fee Related CN1102749C (en) | 1994-10-19 | 1995-10-19 | Method of anchoring self-support optical cable |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2907379B2 (en) |
| CN (1) | CN1102749C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318873C (en) * | 2004-09-08 | 2007-05-30 | 黄正欧 | Protection ring of aerial self-supporting optical cable |
| CN102540376A (en) * | 2010-12-10 | 2012-07-04 | 淮南矿业(集团)有限责任公司 | Connecting system of all-dielectric self-support (ADSS) optical cable and electric power pole |
-
1994
- 1994-10-19 JP JP28000794A patent/JP2907379B2/en not_active Expired - Lifetime
-
1995
- 1995-10-19 CN CN 95116190 patent/CN1102749C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318873C (en) * | 2004-09-08 | 2007-05-30 | 黄正欧 | Protection ring of aerial self-supporting optical cable |
| CN102540376A (en) * | 2010-12-10 | 2012-07-04 | 淮南矿业(集团)有限责任公司 | Connecting system of all-dielectric self-support (ADSS) optical cable and electric power pole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1102749C (en) | 2003-03-05 |
| JPH08126140A (en) | 1996-05-17 |
| JP2907379B2 (en) | 1999-06-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |