JPH0461449B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for filling stranded wire, particularly stranded steel-core aluminum wire, with an anticorrosion compound.

Conventionally, steel-core aluminum stranded wires (hereinafter simply referred to as ACSR), which are commonly used for high-voltage power transmission lines, etc., have been given corrosion protection to prevent corrosion caused by rainwater, etc. of the steel core used to reinforce the aluminum wires. An anticorrosion compound (hereinafter simply referred to as compound) such as grease is filled in the gaps between the strands. ACSR filled with this compound also usually has light corrosion protection.
It is classified into ACSR, medium corrosion protection ACSR, and heavy corrosion protection ACSR.

As shown in the cross-sectional view in Figure 6, light anti-corrosion ACSR is one in which compound c is filled only in the steel wire b that reinforces the aluminum wire (not shown), and medium anti-corrosion
As shown in the cross-sectional view in Figure 7, ACSR is a type in which the inner layer of aluminum wire _A1 and steel wire B, excluding the outermost layer of aluminum wire (not shown), is filled with compound c, and heavy corrosion protection ACSR. (not shown) is one in which the entire stranded wire including the outermost layer of aluminum wire is filled with a compound. However, light corrosion protection and medium corrosion protection
For ACSR, if the compound protrudes from the outer periphery of the ACSR, it will become sticky and interfere with the execution work, so the filling range of the compound is specified to be within the range that does not protrude to the outer periphery of the ACSR.

[Conventional technology]

Conventionally, as an apparatus for twisting electric wires and filling the spaces between the twisted wires with a compound, an apparatus as shown in a vertical cross-sectional view in FIG. 5 has been used.

That is, the conventional device A' is constructed by connecting the wire supply side of the twisting die 1' with a wrapper port 2' that communicates with the compound supply passage 3', and the element introduced into the wrapper port 2' is connected to the wire supply side of the twisting die 1'. The wire S ₀ is sent to the twisting die 1' together with the center wire or the stranded wire S ₁ twisted in the previous process, and the compound c supplied from the compound supply device 4' via the supply passage 3' is fed to the twisting die 1'. It is filled into the gaps between the stranded wires and taken out as a compound-filled stranded wire S.

Such electric wire twisting and compound filling equipment A' is installed every time the steel wire or aluminum wire is twisted in the production of light corrosion protection ACSR and medium corrosion protection ACSR.
For example, when conventional equipment A' is used to fill the compound between the aluminum strands in the inner layer in the production of medium-corrosion-proof ACSR, the cross section of the compound-filled strand is 7th.
In the figure, the compound fills only the gap within the circumference corresponding to the outer diameter of the stranded wire. Then,
If a similar device A' is used in the process of forming the outermost layer of aluminum strands, it is possible to fill the compound between the outermost layer of aluminum strands, but in this case, the compound does not form the outermost layer of aluminum strands. ACSR will adhere to the surroundings of the stranded wires and interfere with construction work, which will violate the aforementioned regulations.

Therefore, a medium-corrosion-proof ACSR in which aluminum strands are applied to the outermost layer without being filled with compound has been commonly used. There are many gaps d between the wire a ₂ and the inner layer aluminum stranded wire a ₁ .
occurs. Therefore, if this ACSR is installed outdoors, rainwater will accumulate in the gap d, and this rainwater will remain for a long time even after the rain has stopped, severely corroding the inner layer aluminum wire and steel wire rather than the outer layer aluminum wire. It comes to that.

[Problem that the invention seeks to solve]

The present invention is applicable to such conventional light corrosion protection ACSR and medium corrosion protection ACSR.
This was done by focusing on the problems of ACSR, and when manufacturing these ACSRs, the compound is filled without any gaps between the steel wires and the inner layer aluminum strands, and at the same time, the compound is filled between the inner layer aluminum strands and the outermost layer aluminum strands. To provide an electric wire twisting and compound filling device which uniformly fills the gaps between wires and also fills the compound between the twisted wires without protruding from the outer periphery of the outermost aluminum twisted wire.

[Means for solving problems]

The present invention will be explained below based on the attached drawings showing examples.

FIG. 1 shows a longitudinal sectional view of the apparatus of the present invention, and FIG. 2 shows a right side view of FIG. 1.

In the figure, the electric wire twisting and compound filling apparatus A of the present invention has a wrapping opening 2 connected to the wire introduction side of the twisting die 1 that communicates with the compound supply passage 3, and a twisting opening 2 communicating with the compound supply passage 3 on the wire introduction side of the twisting die 1. A compound adhesion chamber 4 and a compound adhesion die 6 which communicate with the compound supply passage 5 are provided in series, and an escape passage 7 which communicates with the wire entrance of the wrapper port 2 is provided in series with the compound application chamber 4.

In the figure, 8 is a compound supply device,
Reference numeral 9 denotes a connecting pipe leading from the supply device 8 to the compound supply passages 3 and 5, which may be separately attached to each of the supply passages 3 and 5, but may also be a branch pipe as shown. 10 is a communication passage between the twisting die 1 and the compound deposition chamber 4, and 11 and 12 are blind pipes leading from the escape passage 7 to the outside of the apparatus A.

In the above configuration, the diameter of the twisting die 1 is formed to the same size according to the outer diameter of the twisted wire,
The diameter of the compound adhesion die (hereinafter simply referred to as adhesion die) 6 is larger than the outer diameter of the stranded wire to be formed, and is adjusted to a diameter corresponding to the outer diameter of the stranded wire including the compound layer formed around the stranded wire. Ru.

In addition, the twisting die 1 and the adhesion die 6 are arranged concentrically, and it is desirable that they be arranged as close as possible in order to make the compound layer formed around the twisted wire uniform, for example, 10. number
There is no problem even if the spacing is as short as mm.

Compound adhesion room (hereinafter simply referred to as the adhesion room)
Reference numeral 4 denotes a chamber in which the compound c is applied around the stranded wires, and the adhesion chamber 4 is always filled with the compound c. Since the amount of compound consumed in the deposition chamber 4 is smaller than the consumption amount at the wrapping opening 2, the compound supply passage 5 to the deposition chamber 4 is formed narrower than the supply passage 3 to the wrapping opening 2. The escape passage 7 is designed to be narrower than the compound supply passage 5 to prevent variations in the thickness of the compound deposited on the outer periphery of the stranded wires when the compound pressure in the deposition chamber 4 increases. It is connected between the lower part of the deposition chamber 4 on the opposite side to the compound supply passage 5 and the wire entrance of the wrapper opening 2.

Furthermore, in order to facilitate maintenance management during the production of stranded wires, the apparatus A of the present invention can be manufactured so that it can be divided into upper and lower parts along the plane B-B' shown in FIG.
The twisting die 1 and the attachment die 6 can also be formed so as to be able to be divided into two parts.

[Effect]

Next, the operation of the device A of the present invention will be explained.

First, the compound c supplied from the supply device 8 is introduced into the wrapping port 2 and the deposition chamber 4 via the branch connecting pipe 9 and the supply passages 3 and 5, respectively.

The center strand or the stranded wire S ₁ twisted at the twisting port in the previous step and filled with the compound, and the stranded wire S ₀ twisted by the device of the present invention are introduced into the twisting opening 2 and collected in the twisting die 1. The wires are twisted to form a twisted wire S. In this case, since the inside of the wrapping opening 2 is filled with the compound c through the supply passage 3, the compound c fills the voids created in the twisted wires during twisting. Immediately after passing through the twisting die 1, the stranded wire is filled with the compound as shown in FIG. 7, and the voids within the outer periphery of the stranded wire S are filled with the compound c.

Next, this stranded wire S enters the deposition chamber 4, a compound is adhered to the outer periphery of the stranded wire S, and the excess compound is further squeezed out by the deposition die 6 to form a compound layer _c1 of an appropriate thickness. ₁
is extracted as In this case, the compound pressure in the adhesion chamber 4 does not become high due to the action of the escape passage 7 that opens at the wire inlet of the wrapper opening 2, that is, the low pressure side of the compound, and the compound c overflows from the adhesion die 6 to the outside. This prevents the strands from sticking or unevenly adhering to the strands.

A cross-sectional view of the stranded wire Sc ₁ passing through the attachment die 6 is shown in FIG.

Compound c has a butter-like appearance and adheres well to the steel wires (or galvanized steel wires) and aluminum wires that make up the ACSR, so unless external force is applied, compound layer c ₁ will not change its shape, and the following It can proceed to the twisting process.

Figure 4 is a cross-sectional view of the case where the outermost layer of aluminum stranded wire a ₂ is formed using a twisting die without filling the outer periphery of the compound layer-adhered stranded wire Sc ₁ with compound in the state shown in Figure 3. , the compound layer c ₁ changes to a state c ₂ in which only the gap between the inner layer aluminum strands a ₁ and the outermost layer aluminum strands a ₂ is uniformly filled in the process of forming the aluminum strands a ₂ on the outermost layer. However, the compound c does not overflow to the outside of the outermost layer of aluminum stranded wire _a2 . In other words, the compound is sufficiently filled in the gap between the inner layer aluminum stranded wire _A1 and the outermost layer aluminum stranded wire _A2 , but does not protrude to the outside of the outermost layer aluminum stranded wire _A2 . The thickness of the compound layer _c1 is set by adjusting the diameter of the adhesion die 6.

[Example] Next, as an example of the apparatus of the present invention, a case where a medium corrosion-resistant ACSR is manufactured will be described. In this case, the wire composition of medium anti-corrosion ACSR is 7 steel wires/2.6mmφ,
30 aluminum wires/2.6mmφ twisted.

First, the apparatus shown in FIG. 9 was used as the overall manufacturing apparatus.

In Figure 9, 13 is a supply stand;
4 is a fryer with 6 bobbins wound with steel wire, 15 is a fryer with 12 bobbins wound with aluminum wire, 16 is a fryer with 18 bobbins wound with aluminum wire, and 17 is a fryer with 18 bobbins wound with aluminum wire. The conventional twisting and compound filling device shown in FIG. 5 is for twisting 6 layers of steel wire and filling compound at the same time, and 18 is the twisting and compound filling device of the present invention for twisting 12 layers of aluminum wire and filling compound at the same time. At the same time as twisting, a layer of compound is formed around the outer periphery of the twisted wires. 19 is a twisting port for twisting 18 layers of aluminum wire, and is not equipped with compound filling equipment. 2
0 is a take-up capstan, and 21 is a take-up stand.

In the above apparatus, the steel wire is supplied from the supply stand 13. The six steel wires fed from the fryer 14 are then twisted around the center strand in a conventional twisting and compound filling device 17 to form a compound filled steel strand as shown in FIG. Next, 12 aluminum wires supplied from the fryer 15 were twisted around this steel stranded wire in the twisting and compound filling device 18 of the present invention, and a compound as shown in FIG. 3 was formed on the outer periphery. A twisted wire Sc ₁ is formed. Next, around this twisted wire Sc ₁ is supplied from the flyer 16
Eighteen aluminum wires are twisted with the strand 19 not filled with compound to form a compound filled strand Sc ₂ as shown in FIG. in this case,
The amount of compound layer _c1 formed on the outer periphery of the twisted wire by the device of the present invention depends on the ACSR wire configuration, twisting speed,
Since it varies depending on the consistency of the compound, etc., it is adjusted by the diameter of the adhesion die 6, but in the wire configuration of this example, the twisting speed is 20 mm/min, and the consistency of the compound
210, the diameter of the adhesion die 6 is 13.3mm
φ was optimal.

Next, the ACSR twisted at the twisting port 19 passes through a winding capstan 20 and is wound up at a winding stand 21.

ACSR is formed by twisting 18 aluminum wires around the outer periphery of the stranded wire Sc ₁ on which the compound layer c ₁ is formed by the above manufacturing method. Although it was filled without any gaps, it did not protrude outside the outermost layer of aluminum strands, and did not interfere with the next process of winding or product construction.

〔Effect of the invention〕

As explained in detail above, when manufacturing light corrosion protection ACSR or medium corrosion protection ACSR using the apparatus of the present invention, the inner twisted wire layer and the outermost layer twist that occur when manufacturing using conventional equipment The compound fills the gaps between the wire layers, completely preventing rainwater from accumulating and providing excellent corrosion protection.

In addition, if the device of the present invention is used, light and medium corrosion protection can be achieved.
Since the compound does not protrude outside the specified range of ACSR, it does not interfere with the wire construction work and can be done reliably and easily.

Furthermore, since the device of the present invention is only partially modified in the twisting port of the conventional device, it has the advantage that it can be used without changing or increasing the layout or work process of the wire twisting machine. By using it in combination with conventional twisting and compound filling equipment, it is possible to efficiently produce light and medium corrosion-resistant ACSR.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical sectional view of the device of the present invention, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a sectional view of an example of a stranded wire formed by the device of the present invention, and FIG. A cross-sectional view of an example of a medium-corrosion-proof ACSR manufactured using the equipment, Fig. 5 is a schematic vertical cross-sectional view of a conventional twisting and anti-corrosion compound filling equipment, and Fig. 6 is a diagram of twisted steel filled with an anti-corrosion compound formed by the conventional equipment. cross section of the line,
Fig. 7 is a cross-sectional view of the stranded wire in which aluminum stranded wire is applied around the steel stranded wire filled with anticorrosive compound in the conventional device, and the stranded wire immediately after the exit of the twisting die in the device of the present invention;
The figure shows a medium corrosion-resistant ACSR manufactured using conventional equipment.
FIG. 9 is a cross-sectional view of one example, and FIG. 9 is a schematic front view of a manufacturing apparatus for a medium corrosion-resistant ACSR incorporating the apparatus of the present invention. 1...Twist die, 2...Ratsupa mouth, 3,5
...Anti-corrosion compound supply passage, 4...Anti-corrosion compound adhesion chamber, 6...Anti-corrosion compound adhesion die, 7...Escape passage, 8...Anti-corrosion compound supply device, 13...Supply stand, 14,1
5, 16... Fryer, 17... Conventional twisting and compound filling device, 18... Twisting and compound filling device of the present invention, 19... Twisting opening, 2
1... Winding stand, a ₁ , a ₂ ... Aluminum stranded wire, b
...steel stranded wire, c, c ₁ , c ₂ ... anticorrosion compound.

Claims (1)

[Claims] 1. An anti-corrosion compound adhesion chamber and an anti-corrosion compound adhesion die, in which the wire introduction side of the twisting die is provided with a lapping port that communicates with the anti-corrosion compound supply passage, and the twisted wire outlet side of the twist-end die is connected to the anti-corrosion compound supply passage. An apparatus for twisting electric wires and filling an electric wire with an anticorrosion compound, characterized in that the anticorrosion compound adhesion chamber is provided with an escape passage communicating with the electric wire inlet of the wrapping opening.