CN205583602U - Eliminate fastener that two split conductor strain clamp link fitting generate heat - Google Patents
Eliminate fastener that two split conductor strain clamp link fitting generate heat Download PDFInfo
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- CN205583602U CN205583602U CN201620293969.7U CN201620293969U CN205583602U CN 205583602 U CN205583602 U CN 205583602U CN 201620293969 U CN201620293969 U CN 201620293969U CN 205583602 U CN205583602 U CN 205583602U
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- wire clamp
- gold utensil
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- clamp
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- 239000004020 conductor Substances 0.000 title claims abstract description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 67
- 239000004411 aluminium Substances 0.000 claims abstract description 37
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 53
- 229910052737 gold Inorganic materials 0.000 claims description 53
- 239000010931 gold Substances 0.000 claims description 53
- 238000010438 heat treatment Methods 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000012211 strain insulator Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 230000005611 electricity Effects 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 206010037660 Pyrexia Diseases 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model discloses an eliminate fastener that two split conductor strain clamp link fitting generate heat mainly includes two block length aluminium rows, two short aluminum plate and a heavy gauge wire connecting wire, its characterized in that: install two short aluminum plate on two block length aluminium are arranged respectively, two short aluminum plate connect through a heavy gauge wire connecting wire, long aluminium is arranged two ends and is equipped with anchor clamps respectively. The utility model discloses an advantage does: this equipment of chooseing for use, this well -equipped electric conductivity, good mechanicalness, the cohesion is good between cladding material, chemical stability, durable, conduction effect is good, much more more side around the intercommunication strain clamp switches on the return circuit and arranges away the line characteristic according to strain insulator shaft tower wire, makes special fastener with fastener, aluminium row, the effective equipment of connecting wire, then installs on the wire, increases to switch on the return circuit, it handles to carry out professional electro -coppering with the drainage plate contact surface.
Description
Technical field
This utility model belongs to field of power, relates to a kind of wire clamp, and a kind of double bundle conductor strain wire clamp that eliminates connects the wire clamp of gold utensil heating.
Background technology
In power system, ultra-high-tension power transmission line is undoubtedly aorta and the backbone of electrical network, and therefore, the stable operation of ultra-high-tension power transmission line is particularly important.In order to improve the conveying capacity of transmission line of electricity, reduce corona loss and line reactance, in 220kV transmission line of electricity, generally use double bundle conductor.Connecting gold utensil to be primarily used to insulator is assembled bunchiness, be suspended on shaft tower, at strain section, strain clamp and the connection of insulator chain are also by together with connection fitting assembly.The heating accident of overhead transmission line focuses mostly in drain coupling parts such as strain insulator conduction wire clamp, splicing sleeve, jumper clamps, the most often has aerial earth wire to connect the report of gold utensil heating accident.Not carrying electric current owing to double bundle conductor connects gold utensil, therefore, it is inconspicuous that the heating defect of double bundle conductor connection gold utensil often shows, and rarely has document to report.But, Jiangxi Province Power Network 220kV transmission line of electricity is found that the most continuously a lot of strain insulator connects the defect of gold utensil abnormal heating, if the defect connecting gold utensil heating finds the most in time, long-term overheat, seriously infringement can connect gold utensil, cause transmission line malfunction.On the basis of typical case's double bundle conductor connects the analysis of gold utensil abnormal heating defect the most together, having shown that double bundle conductor connects gold utensil and the universal law feature of strain insulator conduction wire clamp Heating mechanism, the accurately detection for strain insulator conduction wire clamp and connection gold utensil heating provides reference frame.
Cause the rule connecting gold utensil heating in order to study strain insulator conduction wire clamp loose contact, carry out following simulation analysis.The structural representation of strain rod tower one phase two split conductor is as shown in Figure 1, the Main Function connecting gold utensil is fixing support two oidiospore wires, typically will not be through-flow, connect gold utensil and be made up of " steel anchor parallel link plate adjustment plate right angle link plate duplex plate right angle link plate adjustment plate parallel link plate steel anchor ".
According to the structural representation of phase two split conductor of strain rod tower one shown in Fig. 1, do equivalent circuit diagram as shown in Figure 2.Wherein,R lx 、 R ld Represent that small size side, large size side connect the resistance value of gold utensil respectively；Z st 、Z xt Represent upper and lower sub-conductor anchor support wire jumper section resistance value respectively,R sxj 、R xxj Represent small size upper and lower sub-conductor strain clamp drainage plate bolt junction, side contact resistance respectively；R sdj 、R xdj Represent upper and lower sub-conductor strain clamp drainage plate bolt junction, large size side contact resistance respectively；Z sx 、 Z xx Represent the resistance value of the small size side upper and lower sub-conductor of span respectively；Z sd 、 Z xd Represent the resistance value of large size side upper and lower sub-conductor span respectively；R zx 、 R zd Represent that small size side, large size side straight line pole connect the resistance value of gold utensil respectively.
Under normal circumstances,R sxj ≈R xxj 、R sdj ≈R xdj 、Z st ≈Z xt 、Z sx ≈ Z xx 、Z sd ≈Z xd , connect and at gold utensil, there is not electric potential difference, connect gold utensil the most through-flow；Might as well setR sxj =R xxj 、Z st =Z xt 、Z sx =Z xx 、Z sd =Z xd , whenR sdj R xdj Time, there is electric potential difference at connection gold utensil, connect gold utensil through-flow, strain clamp bolt junction and connection gold utensil will be caused overheated.
Simulation calculation；Connect gold utensil heating rule simulation analysis: in order to study its heating rule, do following simplification further: fault anchor support both sides are all tangent towers, and each section of span is equal, when both sides span numberNWhen=1, its equivalent model is as shown in Figure 3.
Line parameter circuit value uses typical design parameters, and wherein, wire and wire jumper model use LGJ-300/25, and wire and wire jumper resistance take 0.05 Ω/km, wire and wire jumper reactance and takes 0.4 Ω/km；Order small size side span, wire jumper segment length, large size side span are respectively 0.2km, 0.01km, 0.2km again；UnderstandZ sx =Z xx =Z sd =Z xd =0.01+0.08i
Ω,Z st =Z xt =0.0005+0.004i
Ω.Connect gold utensil resistance to takeR lx =R ld =0.01 Ω, running current takesI=500A, it is assumed thatR sxj =R xxj =R xdj =0,R sdj Span [0,0.5] Ω.Use MATALAB simulation software to carry out simulation analysis can obtain, strain clamp bolt connection position heating powerP sj , large size side connect gold utensil entirety heating powerP ld Reach the standard grade strain clamp drainage plate bolt junction contact resistance value with large size sideR sdj Between relation curve, as shown in Figure 4.
As can be seen from Figure 4, when strain clamp bolt junction contact resistance increases, strain clamp bolt connection position heating powerP sj First present the rule of constantly increase, work as contact resistance valueR sdj When reaching 0.025 Ω,P sj Occur that flex point reaches maximum, hereafter, along with the continuation of strain clamp bolt junction contact resistance increases, its heating powerP sj Present downward trend；And large size side connects gold utensil entirety heating powerP ld Then constantly increase along with the increase of strain clamp bolt junction contact resistance, finally present obvious fever phenomenon.
Conclusion: (1), by certain 220kV transmission line of electricity connects analysis and the process of gold utensil abnormal heating phenomenon reason, finds that the main cause connecting gold utensil heating is to be caused by the loose contact of strain insulator conduction wire clamp.(2) simulation result shows, when loose contact occurring at double bundle conductor sub-conductor strain insulator conduction wire clamp, heating power at this wire clamp presents the trend incrementally increased, after contact resistance increases to a certain degree, shunting action due to sub-conductor, fever phenomenon at this wire clamp can progressively be transferred to connect gold utensil, ultimately results in the appearance superheating phenomenon connecting gold utensil.(3) according to simulation result, at double bundle conductor strain conduction wire clamp, there is the size of flex point resistance value declined in heating power, relevant with the resistance value connecting gold utensil, and increases with the increase of resistance value connecting gold utensil.(4) being analyzed by above, when loose contact occurs in double bundle conductor strain conduction wire clamp, its highest temperature area is not the most at wire clip body, and can be transferred to connect gold utensil.
Summary of the invention
Analyze based on above, gold utensil Overheat Reasons is that at strain clamp drainage plate, contact resistance is big, lack conducting loop, the purpose of this utility model is to provide a kind of double bundle conductor strain wire clamp that eliminates to connect the wire clamp of gold utensil heating, the connection gold utensil that this wire clamp is parallel on ultra-high-tension power transmission line, reduces and can overcome gold utensil problems of excessive heat.
The technical solution adopted in the utility model is as follows: a kind of double bundle conductor strain wire clamp that eliminates connects the wire clamp of gold utensil heating, mainly includes two block length aluminum rows, two blocks of short aluminium sheets and a heavy gauge wire connecting line；It is characterized in that: be separately installed with two blocks of short aluminium sheets on two block length aluminum rows, two blocks of short aluminium sheets are connected by a heavy gauge wire connecting line；Long aluminum is arranged two ends and is respectively equipped with fixture.
Two block length aluminum row's shapes described in the utility model are identical with composition, and long aluminum arranges two ends and intermediate ends is respectively provided with 4 through holes；Two through holes in the through hole of intermediate ends arrange short aluminium sheet, and long aluminum row and short aluminium sheet are bolted；Can move.
Fixture described in the utility model is divided into half of stationary fixture and half of movable clamp, and half of stationary fixture is fixed by 2 bolts in the wherein two through hole in the two end through holes being separately positioned on long aluminum row；Two half of movable clamps are connected by bolt and half of stationary fixture.
Half of stationary fixture described in the utility model and half of movable clamp are both provided with through hole.
It is to use this wire clamp more flexibly that long aluminum exhausting hole described in the utility model arranges multiple reasons.
Two pieces short aluminium sheet shapes described in the utility model are identical with composition, short aluminium sheet one end is provided with two through holes, use for connecting long aluminum row, the other end arranges four through holes, and four through hole mid portions are groove structure, and its four through holes are respectively arranged with four bolts, two blocks of little aluminium sheets are had on four bolts, described heavy gauge wire connecting line is placed in the groove structure of short aluminium sheet, fixing by two pieces of little aluminium sheet compactings, tightens four bolts.
Advantage of the present utility model is: select this equipment, this well-equipped electric conductivity, good mechanicalness；Plating inter-layer bonding force is good；Stable chemical performance, durable in use, turn-on effect is good；Side before and after connection strain clamp, conducting loop is more by strain rod tower arrangements of conductors cabling feature, wire clamp, aluminum row, connecting line is effectively assembled and makes Special wire-clip, be then fitted on wire, increases conducting loop；Drainage plate contact surface carries out specialty electro-coppering process.
Accompanying drawing explanation
Fig. 1 is strain rod tower one phase two bundle conductor configuration schematic diagram in this utility model background technology.
Fig. 2 is single-phase two split conductor equivalent model schematic diagrams in this utility model background technology.
Fig. 3 be a phase two split conductor simple equivalent circuit figure in this utility model background technology (N=1)。
Fig. 4 be in this utility model background technology heating power withR sdj Graph of relation (N=1)。
Fig. 5 is structural representation one of the present utility model.
Fig. 6 is structural representation two of the present utility model.
In the drawings, long aluminum row 1, two pieces short aluminium sheets 2, heavy gauge wire connecting line 3, fixture 4, through hole 5, bolt 6, half of stationary fixture 7, half of movable clamp 8, groove structure 9, little aluminium sheet 10.
Detailed description of the invention
As seen in figs. 5-6, a kind of double bundle conductor strain wire clamp that eliminates connects the wire clamp of gold utensil heating, mainly includes two block length aluminum rows 1, two pieces short aluminium sheets 2 and a heavy gauge wire connecting line 3；It is characterized in that: be separately installed with two pieces short aluminium sheets 2 on two block length aluminum rows 1, two pieces short aluminium sheets 2 are connected by heavy gauge wire 3 connecting line；Long aluminum row's 1 two ends are respectively equipped with fixture 4；It is identical with composition that two described block length aluminum arrange 1 shape, and long aluminum row's 1 two ends and intermediate ends are respectively provided with 4 through holes 5；Two through holes in the through hole 5 of intermediate ends arrange short aluminium sheet 2, and long aluminum row 1 and short aluminium sheet 2 are connected by bolt 6；Can move；Described fixture 4 is divided into half of stationary fixture 7 and half of movable clamp 8, and half of stationary fixture is fixed by 2 bolts in the wherein two through hole 5 in the two end through holes 5 being separately positioned on long aluminum row 1；Two half of movable clamps 8 are connected by bolt 6 and half of stationary fixture 7；Described two pieces short aluminium sheet 2 shapes are identical with composition, short aluminium sheet 2 one end is provided with two through holes 5, for connecting long aluminum row 1 use, the other end arranges four through holes 5, and four through hole 5 mid portions are groove structure 9, and its four through holes 5 are respectively arranged with four bolts 6, two pieces little aluminium sheets 10 are had on four bolts 6, described heavy gauge wire connecting line 3 is placed in the groove structure 9 of short aluminium sheet 10, fixing by two pieces little aluminium sheet 10 compactings, tightens four bolts.
This utility model Special short wire clamp selects large contact surface wire clamp with connecting position of wires, and measuring its effective contact area is 4175mm, and more than the 3650mm of target call, partial objectives for realizes.At room temperature 25 DEG C, measure the conducting resistance of homemade 36 Special short wire clamps, obtain data as follows.
Special short wire clamp conducting resistance log (table 1) under room temperature
After countermeasure enforcement, the maximum of Special short wire clamp conducting resistance is 428 μ Ω, and average is 319.3 μ Ω, has reached countermeasure target.
Adding up company of 6-8 month Fuzhou City 220kV transmission line of electricity in 2015 and increase defect number of times newly, carry out classified statistic by strain rod tower gold utensil defect, and carried out effect comparison with 2014, statistical table is as follows:
6-8 month strain rod tower gold utensil defect Classification Count table (table 2) in 2015
Arrangement figure is made according to application form, and compare with gold utensil defect distribution arrangement figure before activity: contrast arrangement figure it can be seen that countermeasure implement after, in the 6-8 general defects of month strain rod tower in 2015, gold utensil is overheated is dropped to peripheral issue by subject matter, and crux problem is effectively improved.
1. economic benefit: this patent effectively improves strain rod tower gold utensil this subject matter overheated, decreases equipment deficiency number of times and defect elimination maintenance work cost, reduces acquisition cost (13-2) the * 240=2640 unit of gold utensil；Additionally, the maintenance cost that the every defect elimination of teams and groups once produces, according to 50 yuan/people/hour average human cost and 80 yuan/time vehicle use cost calculate, monthly can reduce (50 * 3+80) * (13-2)=2530 yuan cost, the most always bring benefits into (2640+2530) * 12=62040 unit.This activity improvement and installation strain clamp 36 altogether, buy fee of material, processing charges and the drainage plate copper facing expense totally 12348 yuan such as wire clamp, connecting line, aluminium sheet, averagely every 343 yuan.Economic benefit=always save expense 62040 yuan-activity input 12348 yuan=49692 yuan, decreases the electricity lost because of the line fault of gold utensil heating initiation simultaneously, and economic benefit is the most considerable.
2. social benefit: effective control of strain rod tower gold utensil fever phenomenon, the most direct practical benefit is summer peak meeting and meets the stable operation of circuit between the kurtosis teletostage, decrease the trip accident caused because gold utensil is overheated, and then decrease the labor intensity of breakdown repair personnel, also improve power supply reliability simultaneously, it is made that contribution for " structure sturdy power grid ", achieves preferable social benefit.
Claims (5)
1. eliminate double bundle conductor strain wire clamp and connect a wire clamp for gold utensil heating, mainly include two block length aluminum rows, two blocks of short aluminium sheets and a heavy gauge wire connecting line；It is characterized in that: be separately installed with two blocks of short aluminium sheets on two block length aluminum rows, two blocks of short aluminium sheets are connected by a heavy gauge wire connecting line；Long aluminum is arranged two ends and is respectively equipped with fixture.
A kind of double bundle conductor strain wire clamp that eliminates the most according to claim 1 connects the wire clamp of gold utensil heating, it is characterised in that: two described block length aluminum row's shapes are identical with composition, and long aluminum arranges two ends and intermediate ends is respectively provided with 4 through holes；Two through holes in the through hole of intermediate ends arrange short aluminium sheet, and long aluminum row and short aluminium sheet are bolted.
A kind of double bundle conductor strain wire clamp that eliminates the most according to claim 2 connects the wire clamp of gold utensil heating, it is characterized in that: described fixture is divided into half of stationary fixture and half of movable clamp, half of stationary fixture is fixed by 2 bolts in the wherein two through hole in the two end through holes being separately positioned on long aluminum row；Two half of movable clamps are connected by bolt and half of stationary fixture.
A kind of double bundle conductor strain wire clamp that eliminates the most according to claim 3 connects the wire clamp of gold utensil heating, it is characterised in that: described half of stationary fixture and half of movable clamp are both provided with through hole.
A kind of double bundle conductor strain wire clamp that eliminates the most according to claim 1 connects the wire clamp of gold utensil heating, it is characterized in that: described two pieces short aluminium sheet shapes are identical with composition, short aluminium sheet one end is provided with two through holes, use for connecting long aluminum row, the other end arranges four through holes, four through hole mid portions are groove structure, it is respectively arranged with four bolts on its four through holes, two blocks of little aluminium sheets are had on four bolts, described heavy gauge wire connecting line is placed in the groove structure of short aluminium sheet, fixing by two pieces of little aluminium sheet compactings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620293969.7U CN205583602U (en) | 2016-04-11 | 2016-04-11 | Eliminate fastener that two split conductor strain clamp link fitting generate heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620293969.7U CN205583602U (en) | 2016-04-11 | 2016-04-11 | Eliminate fastener that two split conductor strain clamp link fitting generate heat |
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| Publication Number | Publication Date |
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| CN205583602U true CN205583602U (en) | 2016-09-14 |
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|---|---|---|---|
| CN201620293969.7U Expired - Fee Related CN205583602U (en) | 2016-04-11 | 2016-04-11 | Eliminate fastener that two split conductor strain clamp link fitting generate heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425299A (en) * | 2017-03-30 | 2017-12-01 | 国网山东省电力公司青岛供电公司 | A kind of cable clamp structure and the method bridged using it to wire |
-
2016
- 2016-04-11 CN CN201620293969.7U patent/CN205583602U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425299A (en) * | 2017-03-30 | 2017-12-01 | 国网山东省电力公司青岛供电公司 | A kind of cable clamp structure and the method bridged using it to wire |
| CN107425299B (en) * | 2017-03-30 | 2020-04-10 | 国网山东省电力公司青岛供电公司 | Wire clamp structure and method for bridging wires by using same |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20170411 |