CN204316000U - A kind of preformed repair rods - Google Patents
A kind of preformed repair rods Download PDFInfo
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- CN204316000U CN204316000U CN201420678152.2U CN201420678152U CN204316000U CN 204316000 U CN204316000 U CN 204316000U CN 201420678152 U CN201420678152 U CN 201420678152U CN 204316000 U CN204316000 U CN 204316000U
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- opgw
- hank knotting
- repair
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- stock
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- 230000008439 repair process Effects 0.000 title claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 8
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- 238000012360 testing method Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 206010039509 Scab Diseases 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 208000025962 Crush injury Diseases 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
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- Processing Of Terminals (AREA)
Abstract
The utility model discloses a kind of preformed repair rods, it comprises the many metal monofilament twisted together, the many metal monofilament twisted together form hank knotting, hank knotting spiral is stranded, hank knotting termination is processed into chamfering type, hank knotting internal spray has conduction layer, is covered with armour outside described hank knotting, is provided with one deck anticorrosion silastic-layer outside described armour.The utility model can repair situation for the OPGW stock that breaks, have developed the series engineering application OPGW meeting technical requirement break stock repair splicing fitting, repair under disconnected stock degree of impairment is occurred to the OPGW of different cross section, different tensile strength, unlike material, OPGW mechanical performance, electric property and optical transmission performance engineering demands after repairing, thus eliminate potential safety hazard, ensure the reliable and stable operation of electrical network.
Description
Technical field
The utility model relates to a kind of preformed repair rods.
Background technology
Optical Fiber composite overhead Ground Wire (OPGW), belongs to the extraordinary aerial fiber cable of power communication, with transmission pressure wiring on the same tower, be in the top of overhead transmission line, both had the function of communications optical cable, use as overhead ground wire again, be realize the intelligentized key of electrical network simultaneously.The applied environment of the OPGW of China is much more complicated than the situation of other country, as there is area in high thunderstorm day, heavy ice-covering area etc., simultaneously, in recent years, the electric pressure of China's transmission line is more and more higher, and transmission line capability increases gradually, and erection shaft tower is more and more higher, between shaft tower, span (as large cross line) is more and more longer, requires also more and more higher to the security of operation of OPGW.Along with the generally application of OPGW optical cable in communication of power system, all kinds of operation troubles constantly occurs, and most importantly the outer strand of OPGW breaks stock.Since 2005, successively there is the disconnected stock phenomenon of OPGW skin in circuit in all parts of the country.Through statistics and analysis, the outer single line of the OPGW stock that breaks has many reasons.
(1) reason of raw material or workmanship aspect.There is impurity as raw material or tensile property is not good, during manufacture there is joint in outer monofilament, and during twisted wire, monofilament tension force is uneven etc.;
(2) OPGW of high thunderstorm belt, meets with strands break;
(3) what the uneven icing in heavy ice-covering area caused crosses load, or does not deice the same period to cause and jump or wave, and produces larger impulsive force and unbalanced tensile force, causes outer single line to break stock;
(4) some unpredictable external force, as blown out in quarry, hunter's gunslinging, the disconnected stock that the foeign elements such as violent typhoon cause.
OPGW breaks after stock, although communication performance is uninfluenced sometimes, the mechanical strength of OPGW decreases, and permanent operation goes down not only to have influence on the safe operation of transmission line, and can threaten the reliability of communication of power system, protection.How to repair the OPGW optical cable after disconnected stock, fix a breakdown with the investment economized most, the shortest time, the most reliable scheme, become the problem that everybody pays close attention to jointly.Therefore, need to provide a kind of new technical scheme to solve the problems referred to above.
Utility model content
Break need the problem of the reparation gold utensil be equipped with in stock reparation to solve OPGW, the utility model provides a kind of preformed repair rods.
For solving the problems of the technologies described above, a kind of preformed repair rods of the present utility model, it comprises the many metal monofilament twisted together, the many metal monofilament twisted together form hank knotting, described hank knotting spiral is stranded, and described hank knotting termination is processed into chamfering type, and described hank knotting internal spray has conduction layer, be covered with armour outside described hank knotting, outside described armour, be provided with one deck anticorrosion silastic-layer.
Described metal monofilament is aluminum cald steel wire.
The diameter of described aluminum cald steel wire is 3.5mm, 4.0 mm or 4.6 mm.
Described armour is copper strips or nickel strap.
The beneficial effects of the utility model: the utility model resolves a strand repairing test to multiple typical OPGW conventional in current engineering, preformed repair rods is adopted to repair, optimum repairing effect can be reached, the production technology of preformed repair rods, sophisticated technologies, the repairing bar prepared, ensure that the security reliability of the OPGW after reparation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is preformed armor rods schematic cross-section of the present utility model.
Wherein: 1, aluminum cald steel wire, 2, conduction layer, 3, hank knotting termination, 4, colour code, 5, armour, 6, anticorrosion silastic-layer.
Embodiment
In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment, only for explaining the utility model, does not form the restriction to protection range of the present utility model.
As illustrated in fig. 1 and 2, a kind of preformed repair rods of the present utility model, it comprises the many metal monofilament twisted together, metal monofilament is aluminum cald steel wire 1, the many aluminum cald steel wires twisted together 1 form hank knotting, hank knotting spiral is stranded, hank knotting termination 3 is processed into chamfering type, hank knotting internal spray has conduction layer 2, energy antistatic, armour 5 is covered with outside hank knotting, armour 5 is copper strips or nickel strap, available protecting aluminum cald steel wire, strengthen tensile strength, pressure resistance, one deck anticorrosion silastic-layer 6 is provided with outside armour 5, preformed armor rods is outside exposed, corrosion impact can be subject to a certain extent, in the past for a long time, the performance of the built on stilts electrical lead of impact, silicon rubber anti-corrosion capability is strong.
Diameter for aluminum cald steel wire 1 can elect 3.5mm, 4.0 mm or 4.6 mm as.
The production technology of above-mentioned preformed repair rods, comprise successively unwrapping wire, hank knotting shaping, clean, cut off, bistrique and packaging step, concrete steps are as follows:
(1), by wire rod be placed on pay off rack, cover unwrapping wire cover plate, tie down one section of aluminum cald steel wire of inner side, the aluminum cald steel wire of outer end is drawn in the machine straightening device of forming machine;
(2), suitable contact roller is chosen according to filament diameter, and be put into machine straightening device front end, monofilament end flat file is accomplished arc-shaped, easily enters mould, then compress pinch roller, be adjusted to mould angle, repetitive measurement forming height, when height to be formed reaches requirement, aims at the import of mould by grease fitting, start oil pump, and main frame speed of production is transferred to 800-1200 rev/min;
(3), by cleaning case fill clear water, wherein, pour appropriate washing agent and defoamer in a water tank, wrap hank knotting with flannelette and be crowded together tightly mutually with gathering sill briquetting, start water pump and mix up the water level of the amount of making;
(4), the process of cutting off comprises fixed length and cuts off;
(5), according to hank knotting filament diameter, abrasive machine is slowly inserted in the one end of reserving long preformed armor rods, ensure that the broken end after bistrique is without wedge angle, impulse-free robustness;
(6), by preformed armor rods by automatic glue-spraying scab machine, carry out glue spraying and scab, bondline thickness controls at 0.10-0.15mm, and glue amount is 200-300g/m
2, after oven dry, the outer stranded armour having copper strips or nickel strap of preformed armor rods, at armour outer cladding one deck silicon rubber, then color spray mark, finally pack.
In above-mentioned repairing bar production technology, hank knotting is cut off and is adopted oil pressure to cut off, and adjusts corresponding length, first cut off one according to technological requirement, and whether the length measuring it meets tolerance within+5mm, after meeting the requirements, then enters normal production.
In above-mentioned repairing bar production technology, hank knotting is cut off and is adopted automatic shearing off line to cut off, and set cutting machine controller according to technological requirement, regulate by 1:25, tolerance is within+5mm.
Existing OPGW typical structure comprises following several:
(1) central tubular;
(2) all aluminum clad steel layer-twisted type OPGW;
(3) aluminium Baogang+aluminium alloy layer-twisted type OPGW(skin is aluminium alloy single line).
The recoverable basic demand of OPGW is as follows:
(1) OPGW its residue calculating strength after stock of breaking is not less than 50%RTS;
(2) outerly 50% of total number of share of stock is no more than for the aluminium alloy wire stock that breaks;
(3) prove that optical fiber is without strain by suitable method (as with B-OTDR);
(4) OPGW after repairing reaches the RTS repairing front 100%;
(5) rotation direction of preformed repair rods is identical with the outer rotation direction of OPGW;
(6) material of preformed repair rods is consistent with OPGW cladding material;
(7) preformed repair rods inside spray conduction sand.
The utility model has been selected different structure OPGW to carry out designing respectively and has been tested.
Scheme one
Preformed repair rods process parameters design
(1) selection of material
In order to ensure to have good compatibility and corrosion resistance between preformed repair rods and OPGW, preformed repair rods material used should be identical with the outer twisted wire material of OPGW.This structural outside layers is aluminium Baogang, so repair strip material aluminium Baogang material.
(2) the choosing of filament diameter
Filament diameter is selected to be Φ 3.5mm as calculated.
(3) determination of rotation direction
For protection optical cable, prevent crush injury in loading process, affect the transmission of communicate optical signal, the rotation direction of repairing bar is left-handed.
Preformed repair rods process design parameter is as follows:
Table 1 scheme one repairs bar process parameter table
Data show by experiment, and OPGW-100 sample is only when disconnected 2 bursts, and repairing bar can repair.OPGW-100 when disconnected 4 strands and above, after repairing bar and repairing, pull-off force can not meet 95%RTS.
Analyze data and phenomenon, repair the frictional force of bar and the outer hank knotting of OPGW, do not reach the force value needing to repair.By changing a parameter of repairing bar, thus reach the effect of increasing friction force.
Scheme two
The test data of association schemes one gained, the length that bar is repaired in amendment draws following preformed repair rods process design parameter:
Table 2 scheme two repairs bar process parameter table
Found by twice test data contrast, the length only changing hank knotting is little to the influential effect repaired, in loading process, find that repairing bar does not occur sliding phenomenon, namely the frictional force of repairing between bar and outer hank knotting can not increase along with the increase of two ends pulling force, not disconnected position, thigh is only had to continue stressed, until disrumpent feelings.
Scheme three
Analyze above-mentioned test situation, find only to change the rotation direction of preformed repair rods, could increase frictional force and the grip of repairing bar and outer reeled silk while the increase of two ends pulling force.But also consider after changing rotation direction, repairing bar may damage fiber unit.So research determines, after change rotation direction, if mechanical performance meets the demands, then to carry out the handgrip exercise under flash ranging, check by experiment and whether have damage to optical cable internal optical fiber unit.
On the basis of scheme one, only change the rotation direction of repairing bar, technological parameter is as shown in the table:
Table 3 scheme three repairs bar process parameter table
Can be found by experimental phenomena, when breaking 2 strands, 4 strands and 6 strands, disrumpent feelings being in is repaired outside bar, namely be interrupted stock place in repair strip not rupture, this phenomenon can illustrate that preformed repair rods can reach the reparation of one of percentage hundred when breaking 2 strands, 4 strands and 6 strands, when disconnected 8 bursts, the 95%RTS of OPGW optical cable can be reached.
Scheme four
Change the rotation direction of preformed armor rods, the effect that it is repaired can be affected, in addition consider whether other parameter can have a strong impact on the effect of repairing, so on the basis of scheme three, change the material of preformed armor rods, use aluminium alloy monofilament, draw following preformed repair rods process design parameter:
Table 4 scheme four repairs bar process parameter table
Carry out contrast to scheme three and scheme four to find, be the OPGW of aluminum-cladding stranded wire for skin, when aluminium Baogang intensity reaches disconnected stock Repair strength, the repairing effect of aluminium alloy does not have the good of aluminium Baogang.But between repair data be more or less the same, this shows, repair the rotation direction of bar, play conclusive effect.
In conjunction with the data that above test is collected, carry out analyzing and show that the break series engineering application of stock reparation of typical OPGW continues and repairs gold utensil type selecting table:
The table 5 OPGW stock that breaks is repaired series and is repaired the type selecting table of gold utensil
Proved by test, use when optical fiber does not have impaired preformed armor rods to repair bar and repair OPGW line-broken malfunction, its mechanical strength index can be recovered completely.After adopting special repairing bar, can ensure that optical cable returns to the specified mechanical strength of optical cable of 100%, and its using method is comparatively simple, repairing bar is installed on the disconnected stock place of OPGW optical cable skin.
Repair bar installation and application as follows:
A, before repairing, check that optical cable breaks stock place, whether fiber unit has damage;
B, guarantee fiber unit without damage after, according to OPGW breakage, if outermost layer monofilament has ruptured and the whereabouts that relaxes, lax strand will be screwed to original position as far as possible before installation, and temporary transient adhesive tape has been fixed;
C, the OPGW outer surface polishing clean (adhesive plaster place is without the need to process) of bar installation region (breaking point both sides) will be repaired with sand paper, and remove oxide layer, and at uniform application conductive paste above, treated length should be not less than the length of installing pre-twisted wire repairing strip;
D, installation preformed repair rods, first install one group and repair bar, central marker is alignd with disconnected stock place, is installed by centre to both sides;
E, according to the method for first group, remaining all preformed repair rods are installed, ensure preformed repair rods should with OPGW close contact, it is centrally located at damage and the most seriously locates.
The utility model resolves a strand repairing test to multiple typical OPGW conventional in current engineering, proposes practicable recovery scenario, have developed series engineering application OPGW and to break stock reparation gold utensil.For different OPGW in scheme, adopt different reparation gold utensils, optimum repairing effect can be reached.The topmost advantage of this device is exactly the investment economized most, the shortest time, the most reliable method are fixed a breakdown, eliminate and run hidden danger, and make the OPGW after reparation still can meet mechanical performance, electric property and optical transmission performance, ensure that the security reliability of the OPGW after reparation.
Claims (4)
1. a preformed repair rods, it is characterized in that, it comprises the many metal monofilament twisted together, the many metal monofilament twisted together form hank knotting, described hank knotting spiral is stranded, and described hank knotting termination is processed into chamfering type, and described hank knotting internal spray has conduction layer, be covered with armour outside described hank knotting, outside described armour, be provided with one deck anticorrosion silastic-layer.
2. a kind of preformed repair rods according to claim 1, is characterized in that: described metal monofilament is aluminum cald steel wire.
3. a kind of preformed repair rods according to claim 2, is characterized in that: the diameter of described aluminum cald steel wire is 3.5mm, 4.0 mm or 4.6 mm.
4. a kind of preformed repair rods according to claim 1, is characterized in that: described armour is copper strips or nickel strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678152.2U CN204316000U (en) | 2014-11-14 | 2014-11-14 | A kind of preformed repair rods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678152.2U CN204316000U (en) | 2014-11-14 | 2014-11-14 | A kind of preformed repair rods |
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| Publication Number | Publication Date |
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| CN204316000U true CN204316000U (en) | 2015-05-06 |
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| CN201420678152.2U Expired - Fee Related CN204316000U (en) | 2014-11-14 | 2014-11-14 | A kind of preformed repair rods |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466792A (en) * | 2014-11-14 | 2015-03-25 | 国家电网公司 | Pre-twisted wire repair strip and production process thereof |
| CN105720514A (en) * | 2014-12-05 | 2016-06-29 | 国家电网公司 | Permanent restoration method for broken strand of optical fiber composite overhead ground wire |
-
2014
- 2014-11-14 CN CN201420678152.2U patent/CN204316000U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466792A (en) * | 2014-11-14 | 2015-03-25 | 国家电网公司 | Pre-twisted wire repair strip and production process thereof |
| CN105720514A (en) * | 2014-12-05 | 2016-06-29 | 国家电网公司 | Permanent restoration method for broken strand of optical fiber composite overhead ground wire |
| CN105720514B (en) * | 2014-12-05 | 2018-09-14 | 国家电网公司 | A kind of stranded permanent restorative procedure of optical fiber composite overhead ground wire |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20191114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |