CN106297963A - The improvement of damping type wire of a kind of concentric stranding and improvement of damping method - Google Patents
The improvement of damping type wire of a kind of concentric stranding and improvement of damping method Download PDFInfo
- Publication number
- CN106297963A CN106297963A CN201610657884.7A CN201610657884A CN106297963A CN 106297963 A CN106297963 A CN 106297963A CN 201610657884 A CN201610657884 A CN 201610657884A CN 106297963 A CN106297963 A CN 106297963A
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- Prior art keywords
- line
- steel core
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- layer
- stranded
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/08—Several wires or the like stranded in the form of a rope
- H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
- H01B5/102—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core
- H01B5/104—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core composed of metallic wires, e.g. steel wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
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Abstract
The invention provides a kind of improvement of damping type wire and the improvement of damping method of concentric stranding, utilize special aluminium alloy layer structure, construct the interlayer spacings between wire steel core and aluminium alloy layer and adjacent aluminium alloy layer, add the damping characteristic of wire, decrease the harmful effect that the life-span of wire is caused by actually used middle aeolian vibration.The improvement of damping type wire of described concentric stranding, including: steel core and the multilayer aluminum alloy-layer the most stranded with steel core, the innermost layer of described aluminium alloy layer is formed by the molded line of two kinds of thickness is stranded, its medium-thick type line quantity is N root, and angle is 360 °/N between adjacent two thicker lines, the minor face of the trapezoid cross section of its medium-thick type line contacts with steel core, includes many slim lines of coaxial stranded connection between adjacent two thicker lines so that form gap between minor face and the steel core of the trapezoid cross section of slim line.
Description
Technical field
The present invention relates to overhead power transmission wire field, and more particularly, to the improvement of damping of a kind of concentric stranding
Type wire and improvement of damping method.
Background technology
Aerial condutor can vibrate under wind action, common vibration mode have aeolian vibration, subspan oscillation and
Waving three kinds, wherein aeolian vibration is a kind of vibration mode that occurrence scope is the widest, the persistent period is the longest.Aeolian vibration is easily drawn
Play the tired disconnected stock of wire, be must issues that need special attention in circuit design and operation.
Large crossing projects has special significance in power transmission sequence, and owing to stringing is high, air-flow is more uniform than lower, the most easily
In producing aeolian vibration, large-span conductors intensity is high, runs stress big, and self-damping is little, absorbs wind power big, and aeolian vibration is strong
Strong.The fundamental vibration frequency of wiring system is the lowest, and the frequency facing first order mode is sufficiently close to, and is chronically at resonance state, vibrationproof difficulty
Greatly.Large crossing projects wire generally uses the gapless steel core aluminum alloy stranded wire of closing lay, and its self-damping is relatively small, averagely
Run stress and be typically not greater than 22% σb, wherein σbFor wire breaking stress, otherwise aeolian vibration can exceed standard.The average fortune of wire
Row stress is primarily limited to the self-damping performance of wire, if the self-damping performance of wire can be improved, then can use higher flat
All running tensions, the sag of wire can reduce accordingly, and tower height lowers accordingly, and construction investment reduces therewith.
Summary of the invention
In order to solve the problems referred to above, the present invention proposes improvement of damping type wire and the improvement of damping side of a kind of concentric stranding
Method.
According to an aspect of the present invention, the improvement of damping type wire of a kind of concentric stranding is proposed, including: steel core and with
The multilayer aluminum alloy-layer that steel core is the most stranded, it is characterised in that: the innermost layer of described aluminium alloy layer is twisted by the molded line of two kinds of thickness
Conjunction forms, and its medium-thick type line quantity is N root, and between adjacent two thicker lines, angle is 360 °/N, its medium-thick type line trapezoidal
The minor face in cross section contacts with steel core, includes many slim lines of coaxial stranded connection so that slim between adjacent two thicker lines
Gap, and the ladder of the long limit of the trapezoid cross section of every slim line and thicker line is formed between minor face and the steel core of the trapezoid cross section of line
The radius on the long limit of tee section is identical.
Preferably, quantity N of described thicker line is 2,3 or 4.
Preferably, described steel core is galvanized strand wires.
Preferably, the radical of described galvanized strand wires can be 7,19 and 37.
Preferably, the ring width of described thicker line is more than the ring width of slim line.
Preferably, bulge clearance mode is used to carry out stranded between the adjacent two layers of described multilayer aluminum alloy-layer, to be formed
Interlayer spacings structure.
Preferably, the gap location between the innermost layer of described steel core and multilayer aluminum alloy-layer fills anticorrosion oils and fats.
According to another aspect of the invention, it is proposed that a kind of improvement of damping method of wire, including: around wire steel core together
Axle stranded multilayer aluminum alloy-layer, it is characterised in that: the innermost layer of described aluminium alloy layer is formed by the molded line of two kinds of thickness is stranded, its
Medium-thick type line quantity is N root, and between adjacent two thicker lines, angle is 360 °/N, the minor face of the trapezoid cross section of its medium-thick type line
Contact with steel core, include many slim lines of coaxial stranded connection between adjacent two thicker lines so that trapezoidal section of slim line
Gap, and the length of the trapezoid cross section of the long limit of the trapezoid cross section of every slim line and thicker line is formed between minor face and the steel core in face
The radius on limit is identical.
Preferably, quantity N of described thicker line is 2,3 or 4.
Preferably, described steel core is galvanized strand wires.
Preferably, the radical of described galvanized strand wires is 7,19 or 37.
Preferably, the ring width of described thicker line is more than the ring width of slim line.
Preferably, bulge clearance mode is used to carry out stranded between the adjacent two layers of described multilayer aluminum alloy-layer, to be formed
Interlayer spacings structure.
Preferably, between the innermost layer of described steel core and multilayer aluminum alloy-layer, gap location fills anticorrosion oils and fats.
The present invention utilizes special aluminium alloy layer structure, construct between wire steel core and aluminium alloy layer, adjacent aluminum close
Interlayer spacings between layer gold so that wire is in use because the existence in gap, by can be because of phase between wire during aeolian vibration
Collide mutually and consume substantial amounts of energy, reach to reduce the dysgenic purpose that aeolian vibration brings.
Accompanying drawing explanation
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by:
Fig. 1 is the cross section structure signal of the monolayer gap improvement of damping type wire 100 according to the preferred embodiment for the present invention
Figure；
Fig. 2 is the cross section structure signal of the Double-layer gap improvement of damping type wire 200 according to the preferred embodiment for the present invention
Figure.
With the lead wire damping Enhancement Method flow chart of invention preferred embodiment according to Fig. 3.
Detailed description of the invention
With reference now to accompanying drawing, introduce the illustrative embodiments of the present invention, but, the present invention can be by many different shapes
Formula is implemented, and is not limited to embodiment described herein, it is provided that these embodiments are at large and fully disclose
The present invention, and the scope of the present invention is fully passed on to person of ordinary skill in the field.For representing showing in the accompanying drawings
Term in example embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements uses identical attached
Figure labelling.
Except as otherwise noted, person of ordinary skill in the field is had by term used herein (including scientific and technical terminology)
Common understand implication.Further it will be understood that the term limited with normally used dictionary, it should it is understood to and it
The linguistic context of association area has consistent implication, and is not construed as Utopian or the most formal meaning.
Fig. 1 is the cross section structure signal of the monolayer gap improvement of damping type wire 100 according to the preferred embodiment for the present invention
Figure.If as it is shown in figure 1, the monolayer gap improvement of damping type wire 100 of concentric stranding is concentric by steel core 101 and dried layer aluminium alloy layer
Stranded forming, wherein innermost layer aluminium alloy layer is all formed by the molded line of some different-thickness is stranded.
Preferably, the innermost layer of described aluminium alloy layer is formed by the molded line of two kinds of thickness is stranded, the number of its medium-thick type line 102
Amount is three, and the angle between any two thicker lines 102 is 120 °, meanwhile, and the trapezoid cross section of every thicker line 102
Minor face all contact with steel core 101, and between adjacent two thicker lines 102, include many slim lines of coaxial stranded connection
103 so that between minor face and the steel core 101 of the trapezoid cross section of slim line 103, form gap, the simultaneously ladder of every slim line 103
The long limit of tee section is identical with the radius on the long limit of the trapezoid cross section of thicker line 102.
Preferably, described steel core 101 is galvanized strand wires, and the quantity of galvanized strand wires can be 7,19 or 37
Root.
Preferably, the ring width of thicker line 102 is more than the ring width of slim line 103.
Preferably, the gap location between the innermost layer of steel core 101 and multilayer aluminum alloy-layer fills anticorrosion oils and fats, to reduce
The abrasion of interlayer strands, the service life of extension lead.
The embodiment employing different size molded line of Fig. 1 is with the version of layer stranded formation interlayer, due to thicker line 102
The domes that supporting role and trapezoidal cross-section are formed, both can guarantee that the interlayer spacings between aluminium alloy layer and steel core 101, simultaneously
Ensure fix with the stranded rear position of molded line of the different-thickness in layer, stranded closely.It will be appreciated that the wire shown in Fig. 1
Required strand technique is identical with common molded line, it is not necessary to improves and twists technique processed.
Fig. 2 is the cross section structure signal of the Double-layer gap improvement of damping type wire 200 according to the preferred embodiment for the present invention
Figure.The conductor structure of Double-layer gap improvement of damping type wire 200 and monolayer gap improvement of damping type wire 100 in Fig. 1 in Fig. 2
Structure is substantially the same, and is mainly formed by steel core 201 and multilayer aluminum alloy-layer concentric stranding, and innermost layer aluminium alloy layer is by three thickness
Molded line 202 and some slim lines 203 are the most stranded.Angle between the most any two thicker lines 202 is 120 °, and every thickness
The minor face of the trapezoid cross section of molded line 202 all contacts with steel core 201, includes coaxial stranded company between adjacent two thicker lines 202
The many slim lines 203 connect so that formation gap between minor face and the steel core 201 of the trapezoid cross section of slim line 203, every simultaneously
The long limit of the trapezoid cross section of slim line 203 is identical with the radius on the long limit of the trapezoid cross section of thicker line 202.
Preferably, projection interval mode is used to carry out stranded between the adjacent two layers of described multilayer aluminum alloy-layer, to be formed
Interlayer spacings structure.Such as, second layer aluminium alloy layer is equally by three thicker lines 202 and some slim line 203 concentric strandings
Become.Angle between the most any two thicker lines 202 is 120 °, and the minor face of the trapezoid cross section of every thicker line 202 all with
The contact outside of innermost layer aluminium alloy layer, includes that between two adjacent thicker lines 202 many of coaxial stranded connection are slim
Line 203 so that between being formed between minor face and the innermost layer aluminium alloy layer of the trapezoid cross section of the slim line 203 of second layer aluminium alloy layer
Gap, the simultaneously long limit of the trapezoid cross section of every of second layer aluminium alloy layer slim line 203 and the thicker line of second layer aluminium alloy layer
The radius on the long limit of the trapezoid cross section of 202 is identical.
With the lead wire damping Enhancement Method flow chart of invention preferred embodiment according to Fig. 3.As it is shown on figure 3, this method is divided
It is two steps, first galvanized strand wires is twisted into steel core, then at the outer concentric stranding multilayer aluminum alloy-layer of steel core.
Preferably, in step 301, the galvanized strand wires of many same diameter is twisted into the steel core of wire.Preferably,
The quantity of galvanized strand wires can be 7,19 or 37.
Preferably, in step 302, at the outer concentric stranding multilayer aluminum alloy-layer of steel core, synchronize time stranded to fill out at gap location
Fill anticorrosion oils and fats.Preferably, the innermost layer of described multilayer aluminum alloy-layer is formed by the molded line of two kinds of thickness is stranded, its medium-thick type line
Quantity be N root, and the angle between adjacent two thicker lines is 360 °/N degree, the minor face of the trapezoid cross section of its medium-thick type line with
Steel core contacts, and includes many slim lines of coaxial stranded connection so that the trapezoid cross section of slim line between adjacent two thicker lines
Minor face and steel core between form gap, and the long limit of the trapezoid cross section of the long limit of the trapezoid cross section of every slim line and thicker line
Radius identical.Preferably, the radical N of thicker line can be 2,3 or 4.
Preferably, for being twisted into the ring width ring width more than slim line of the thicker line of aluminium alloy layer in step 2.
Preferably, the examination of projection interval side is used to twist between the two-layer that the outer stranded multilayer aluminum alloy-layer of steel core is adjacent
Close, to form the interstitial structure between aluminium alloy layer, further enhance the damping characteristic of wire.Carry out in addition to innermost layer its
During his aluminium alloy layer, it is possible to use the structure identical with innermost layer aluminium alloy layer, utilize N root thicker line and the same layer of the slim line of Duo Gen
Stranded.Preferably, the angle between adjacent two thicker lines is 360 °/N degree, and the minor face of the trapezoid cross section of every thicker line is equal
Contact with adjacent inner side aluminium alloy layer, between two adjacent thicker lines, include that many of coaxial stranded connection are slim
Line, makes the long limit of the trapezoid cross section of the long limit of the trapezoid cross section of the slim line of this layer every and the thicker line of second layer aluminium alloy layer
Radius is identical, and then makes to constitute gap knot between minor face and the adjacent inner side aluminium alloy layer of the trapezoid cross section of this layer of slim line
Structure, strengthens the damping characteristic of wire.
Preferably, the gap location between the innermost layer of steel core 201 and multilayer aluminum alloy-layer fills anticorrosion oils and fats, to reduce
The abrasion of interlayer strands, the service life of extension lead.
Present invention design achieves between the interlayer of the gap between steel core and aluminium alloy layer and adjacent two layers aluminium alloy layer
Gap so that due to the existence in gap during conductor vibration, interlayer strands can occur mutually to collide, and then consumes substantial amounts of energy,
Under identical wind energy effect, its oscillation intensity is substantially reduced, it is achieved the purpose of suppression wire aeolian vibration.And then at actual track
In using, because the damping characteristic of wire improves, therefore can use higher average running tension, when wire hangs, sag can be corresponding
Reducing, tower height lowers accordingly, and construction investment reduces therewith.
By describing the present invention with reference to a small amount of embodiment.But, known in those skilled in the art, as
Subsidiary Patent right requirement is limited, except the present invention other embodiment disclosed above falls equally the present invention's
In the range of.
Normally, all terms used in the claims are all solved in the usual implication of technical field according to them
Release, unless additionally defined clearly wherein.All of reference " one/described/be somebody's turn to do [device, assembly etc.] " is all opened ground
It is construed at least one example in described device, assembly etc., unless otherwise expressly specified.Any method disclosed herein
Step all need not be run, unless explicitly stated otherwise with disclosed order accurately.
Claims (14)
1. an improvement of damping type wire for concentric stranding, including: steel core and the multilayer aluminum alloy-layer the most stranded with steel core,
It is characterized in that: the innermost layer of described aluminium alloy layer is formed by the molded line of two kinds of thickness is stranded, its medium-thick type line quantity is N root,
And angle is 360 °/N between adjacent two thicker lines, the minor face of the trapezoid cross section of its medium-thick type line contacts with steel core, adjacent two
Many slim lines of coaxial stranded connection are included so that between minor face and the steel core of the trapezoid cross section of slim line between root thicker line
Form gap, and the long limit of the trapezoid cross section of every slim line is identical with the radius on the long limit of the trapezoid cross section of thicker line.
Wire the most according to claim 1, it is characterised in that: quantity N of described thicker line is 2,3 or 4.
Wire the most according to claim 1, it is characterised in that: described steel core is galvanized strand wires.
Wire the most according to claim 1, it is characterised in that: the radical of described galvanized strand wires can be 7,19 and
37.
Wire the most according to claim 1, it is characterised in that: the ring width of described thicker line is more than the ring width of slim line.
Wire the most according to claim 1, it is characterised in that: use convex between the adjacent two layers of described multilayer aluminum alloy-layer
Play interval mode and carry out stranded, to form interlayer interstitial structure.
Wire the most according to claim 1, it is characterised in that: gap between the innermost layer of described steel core and multilayer aluminum alloy-layer
Anticorrosion oils and fats is filled at place.
8. an improvement of damping method for wire, including: at wire steel core the most stranded multilayer aluminum alloy-layer, its feature exists
In: the innermost layer of described aluminium alloy layer is formed by the molded line of two kinds of thickness is stranded, and its medium-thick type line quantity is N root, and adjacent two
Between root thicker line, angle is 360 °/N, and the minor face of the trapezoid cross section of its medium-thick type line contacts with steel core, adjacent two thicker lines
Between include many slim lines of coaxial stranded connection so that between being formed between minor face and the steel core of the trapezoid cross section of slim line
Gap, and the long limit of the trapezoid cross section of every slim line is identical with the radius on the long limit of the trapezoid cross section of thicker line.
Method the most according to claim 8, it is characterised in that: quantity N of described thicker line is 2,3 or 4.
Method the most according to claim 8, it is characterised in that: described steel core is galvanized strand wires.
11. methods according to claim 10, it is characterised in that: the radical of described galvanized strand wires is 7,19 or 37
Root.
12. methods according to claim 8, it is characterised in that: the ring width of described thicker line is more than the ring width of slim line.
13. methods according to claim 8, it is characterised in that: use between the adjacent two layers of described multilayer aluminum alloy-layer
Bulge clearance mode carries out stranded, to form interlayer interstitial structure.
14. wires according to claim 8, it is characterised in that: between the innermost layer of described steel core and multilayer aluminum alloy-layer
Anticorrosion oils and fats is filled at gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610657884.7A CN106297963A (en) | 2016-08-11 | 2016-08-11 | The improvement of damping type wire of a kind of concentric stranding and improvement of damping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610657884.7A CN106297963A (en) | 2016-08-11 | 2016-08-11 | The improvement of damping type wire of a kind of concentric stranding and improvement of damping method |
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| Publication Number | Publication Date |
|---|---|
| CN106297963A true CN106297963A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610657884.7A Pending CN106297963A (en) | 2016-08-11 | 2016-08-11 | The improvement of damping type wire of a kind of concentric stranding and improvement of damping method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2678067Y (en) * | 2003-07-10 | 2005-02-09 | 特变电工股份有限公司 | Self-vibration absorbing insulation aerial cable |
| CN102903424A (en) * | 2012-09-28 | 2013-01-30 | 中国电力科学研究院 | Sparsely twisted type expanded lead |
| CN203799738U (en) * | 2014-04-24 | 2014-08-27 | 无锡华能电缆有限公司 | Low wind pressure and low noise lead wire |
-
2016
- 2016-08-11 CN CN201610657884.7A patent/CN106297963A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2678067Y (en) * | 2003-07-10 | 2005-02-09 | 特变电工股份有限公司 | Self-vibration absorbing insulation aerial cable |
| CN102903424A (en) * | 2012-09-28 | 2013-01-30 | 中国电力科学研究院 | Sparsely twisted type expanded lead |
| CN203799738U (en) * | 2014-04-24 | 2014-08-27 | 无锡华能电缆有限公司 | Low wind pressure and low noise lead wire |
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Application publication date: 20170104 |