CN202352365U - High Conductivity Cable with Improved Conductor Structure - Google Patents

Abstract

The utility model discloses an improve conductor structure's high-conductivity cable belongs to the cable field. The utility model is made by twisting a plurality of conductors on the periphery of the core wire of the concentric circle or the non-concentric circle, and the twisted conductor is embedded in the groove of the conductor fixing frame with a hollow circular hole and a plurality of grooves; or the flat conductor fixing frame embedded with the stranded conductor is surrounded on the periphery of the round hollow spiral body and then wrapped by a PE tape or a PE wire Mylar; or, a plurality of flat conductor fixing frames embedded with stranded conductors are overlapped to form a multi-core high-conductivity cable core wire, the outer edge of the multi-core high-conductivity cable core wire is wrapped by a porous insulating tape, and the multi-core high-conductivity cable core wire and the special-shaped hollow spiral body are uniformly arranged at intervals and surround the peripheral edge of the circular hollow spiral body. The utility model minimizes the conductor area, maximizes the skin effect, improves the current-carrying capacity of the conductor area, and saves copper material by about 70%; meanwhile, the perforated conductor fixing frame is adopted, ventilation is facilitated, temperature rise is reduced, and the effect of improving current-carrying capacity is achieved.

Description

High Conductivity Cable with Improved Conductor Structure

technical field

The utility model relates to the field of cables, in particular to a high-conductivity cable with an improved conductor structure. The improved conductor structure can save nearly 70% of copper materials.

Background technique

Today's climate change is unpredictable, sometimes there are flash floods, storms, tsunamis, and earthquakes, and Changming's technology is also difficult to cope with. Superconducting cables have entered the experimental period, which is a great boon for energy conservation. Due to the cumbersome production process and high cost, it will take at least 20 to 30 years to replace underground high-voltage cables. The ampacity of high conductivity cables is 1 to 2 times that of traditional cables, but it is still not ideal.

Existing wires and cables except for a single conductor, most of the wires and cables composed of multiple conductors have to be twisted once or more times. As far as the skin effect is concerned, when the charge is transmitted in the conductor, its current density is different. Evenly distributed, most of the current is distributed in the outer layer of the conductor, the closer to the periphery of the conductor, the greater the current density, and vice versa, the smaller the copper wire in the center of the conductor does not fully play the role of the conductor carrying capacity. For example: for a single-core wire with a diameter of 1.13mm, the cross-sectional area of the wire is 1mm ² , and its safe current is 18A, that is, the average current per square millimeter is only 18A; when the cross-sectional area of the wire is 185mm ² , its safe The current is 505A, that is, the average current per square millimeter is only 2.73A. Taking 70°C PVC insulated wire as an example, its safe current is shown in Table 1 (Table 6-25 of "600 Questions for Field Electricians").

Table 1 Safe current capacity of 70℃ PVC insulated single-core wire (excerpt)

It is known from Table 1 that the safe current of 1.0mm ² is 18A, which is also the critical current density. If the safe current is increased by increasing the cross-sectional area of the single-core wire, the copper in the center of the conductor is not fully utilized, which will cause copper, The waste of aluminum resources, not to mention the smelting and rolling of copper and aluminum wire rods consume a lot of energy, manpower and material resources, and the emission of carbon dioxide has increased environmental pollution. Therefore, it is necessary to improve the simplification of the production process of the high-conductivity cable, the improvement of the conductor structure, the saving of raw materials, and the improvement of the carrying capacity.

Contents of the invention

1. The technical problems to be solved by the utility model

The utility model aims at the fact that the copper material in the existing high-conductivity cable does not fully play the role of diversion, resulting in the waste of a large amount of copper material. The utility model provides a high-conductivity cable with an improved conductor structure. The improved conductor structure of the utility model is adopted. High-conductivity cables can save about 70% of copper material by taking advantage of the carrying capacity of cable conductors close to the critical current density.

2. Technical solution

In order to achieve the above object, the technical solution provided by the utility model is:

A high-conductivity cable with improved conductor structure. Multiple conductors are twisted on the periphery of concentric or non-concentric circular core wires to form a stranded conductor, and the outer edge of the stranded conductor is wrapped with an insulating tape with holes.

A high-conductivity cable with an improved conductor structure. Multiple conductors are twisted on the periphery of concentric or non-concentric circular core wires to form a stranded conductor. The stranded conductor is embedded in a multi-groove conductor with holes and fixed. In the groove of the frame, the conductor fixing frame is a flat or hollow circular body.

Preferably, the conductor of the high-conductivity cable is bare copper wire, copper-clad aluminum wire or aluminum wire, and the core wires of concentric circles or non-concentric circles are non-conductors; The 5 wires form a cluster, and are respectively embedded in the V-shaped groove of the hollow copper cylinder. There is a V-shaped groove ring in the middle of both ends of the hollow copper cylinder. .

A high-conductivity cable with an improved conductor structure, a plurality of flat conductor holders embedded with stranded conductors are wrapped around the circumference of a circular hollow spiral body, and then wrapped with PE tape or PE wire Mylar.

Preferably, the conductor of the high-conductivity cable is bare copper wire, copper-clad aluminum wire or aluminum wire, and the core wires of concentric circles or non-concentric circles are non-conductors; The 5 wires form a cluster, and are respectively embedded in the V-shaped groove of the hollow copper cylinder. There is a V-shaped groove ring in the middle of both ends of the hollow copper cylinder. .

A high-conductivity cable with an improved conductor structure. A plurality of flat conductor holders embedded with stranded conductors are overlapped to form a multi-core high-conductivity cable core wire. The outer edge of the multi-core high-conductivity cable core wire is insulated with holes. With wrapping, special-shaped hollow spirals are arranged between each multi-core high-conductivity cable core wire, and the multi-core high-conductivity cable core wires and special-shaped hollow spirals are evenly spaced around each other around the periphery of the circular hollow spiral body.

Preferably, the conductor of the high-conductivity cable is bare copper wire, copper-clad aluminum wire or aluminum wire, and the core wires of concentric circles or non-concentric circles are non-conductors; The 5 wires form a cluster, and are respectively embedded in the V-shaped groove of the hollow copper cylinder. There is a V-shaped groove ring in the middle of both ends of the hollow copper cylinder. .

Principle of the utility model:

(1) Temperature rise determines safe current capacity

According to the Electrician's Rules: Under a certain ambient temperature (25°C), the transmission current that does not exceed the maximum allowable temperature is called the carrying capacity, also known as "safety current". However, the safe current capacity of cables of various specifications depends on the temperature rise of the corresponding conductors. Taking 70°C PVC insulated wires as an example, the safe current is shown in Table 1 (see the background technology section) and Table 2 (electrical specification table 16-3).

Table 2 Safety current capacity table of 70℃ PVC insulated wire duct (excerpt)

It can be seen from Table 1 and Table 2 that the critical current density is 18A/mm ² ~ 18.75Amm ² ; the temperature rise of multiple wires in the same conduit is greater than the temperature rise of a small number of wires in the same conduit, so the safe current capacity of the wires depends on the temperature. It varies by liter. Therefore, in the high-conductivity cable with improved conductor structure of the present invention:

1) Use flat PE/PVC insulating tape with holes to wrap around the stranded conductor, and leave a suitable gap, which not only saves insulating materials, but also has space for ventilation and cooling, which reduces the temperature rise and improves the temperature. The original extrusion covering method;

2) The conductor fixing frame made of PE/PVC by extrusion has punching holes on the conductor fixing frame, which not only saves plastic but also has the function of ventilation and cooling to increase the carrying capacity;

3) There is a special-shaped hollow spiral between each conductor (two-core/three-core/multi-core) of the multi-core cable, so that there is a gap between the two conductors, which can be ventilated and cooled, and the carrying capacity can be increased;

4) The circular hollow spiral body made of fireproof engineering plastics is placed in the center of each conductor holder embedded with conductors, which is conducive to ventilation, reduces the temperature rise, and thus increases the carrying capacity.

(2) The conductor of the critical current density is used as the conductor of the high-conductivity cable

It is known from Table 1 that the safe current of 1.0mm ² is 18A, which is also the critical current density. The utility model aims to improve the current carrying capacity of the conductor so as to save copper resources and achieve the purpose of energy saving and carbon reduction. Therefore, the conductor of the high-conductivity cable should use a conductor with a critical current density. The effect of high conduction current.

(3) Expand the function of skin effect

As we all know, when charges are transported in a conductor, the current density is unevenly distributed, and the closer to the periphery of the conductor, the greater the current density, and vice versa. Ohm's law, Faraday's law, or skin effect are different, but if you understand them well, you may have new discoveries: the temperature rise determines the current carrying capacity, and the allowable temperature rise is proportional to the current carrying capacity; the circumference of the conductor The length is proportional to the carrying capacity. If the area remains the same, the carrying capacity will increase due to the increase in the circumference of the conductor. On the contrary, if the circumference remains the same and the area decreases, the carrying capacity will remain unchanged.

导体的周长是3.545mm，今将1.0mm²之导线分割为7等份，每根导线的直径是

再将7根

的导体绞合成一股；或6根

的导体绞合成一股，其中心的一根是同芯圆的抗拉塑料线取代导体。两者周长同样是4.024mm(dπn/2)；但就导体面积言，前者是1.0mm²而后者是0.86mm²。将上述之1.0mm²和0.86mm²的样品，各取一段分别做温升测试(设定温升65℃)，在4小时后，当温度稳定在65℃±1℃时，两者之载流量均是20A。所以，由上述案例中可知：For example, take the critical current density of 1.0mm ² /18A as an example: known

The circumference of the conductor is 3.545mm. Now divide the 1.0mm ² wire into 7 equal parts. The diameter of each wire is

7 more

The conductors are twisted into one strand; or 6

The conductors are twisted into one strand, and the central one is a tensile plastic wire with the same core circle instead of the conductor. The circumference of both is 4.024mm (dπn/2); but in terms of conductor area, the former is 1.0mm ² and the latter is 0.86mm ² . Take the above-mentioned 1.0mm ² and 0.86mm ² samples, each take a section for temperature rise test (set temperature rise 65°C), after 4 hours, when the temperature is stable at 65°C ± 1°C, the load of the two The flow rate is 20A. Therefore, it can be seen from the above cases that:

1) When the temperature rise is the same for 1.0mm ² or 0.86mm ² , the current carrying capacity is 20A, but the area of 0.86mm ² is smaller than that of 1.0mm ² , so it proves that "the circumference is constant, and the carrying capacity is constant when the area is reduced. of";

导体的周长是3.545mm，但7根

绞合，其中心的一根为非导体，该绞合导体的周长是4.024mm，比1.0mm²的周长增加了0.474mm，因此载流量也增加了2A，故此可证明“若导体面积不变，所增加载流量因导体周长增加而增加”。2) Known single root

The circumference of the conductor is 3.545mm, but 7

Stranded, the center of which is a non-conductor, the circumference of the stranded conductor is 4.024mm, an increase of 0.474mm compared to the circumference of 1.0mm ² , so the carrying capacity is also increased by 2A, so it can be proved that "if the conductor area unchanged, the increased ampacity increases due to the increased conductor circumference".

铜线构成，其周长是14.08mm(dπn/2)，比传统电线导体周长大。Another example: take the traditional wire 6mm ² and the high conductivity cable 3mm ² as examples: at the same temperature rise, their carrying capacity is 50A. The traditional wire of 6mm ² is usually in a single The copper wire is the conductor, and the circumference is 8.67mm (dπ); the high-conductivity cable is made of

Composed of copper wire, its circumference is 14.08mm (dπn/2), which is larger than the circumference of traditional wire conductors.

Therefore, it can be seen from the above cases that:

1) Since the traditional electric wire fails to fully utilize the function of the critical current density and is constrained by the skin effect, it cannot fully utilize the current carrying capacity of the conductor area;

2) Therefore, it can be proved that the application of the critical current density can expand the skin effect, and at the same time increase the current carrying capacity, and relatively save copper.

Therefore, the utility model uses multiple conductors stranded on the periphery of concentric circles or non-concentric circular core wires to make stranded conductors as conductors of high-conductivity cables, thereby increasing the circumference of conductors with the same cross-sectional area. The current-carrying capacity per unit area is increased, and the copper material can fully play the role of diversion, saving copper material, which is beneficial to energy saving and environmental protection.

3. Beneficial effect

Adopting the technical scheme provided by the utility model, compared with the prior known technology, has the following remarkable effects:

(1) The utility model adopts a plurality of conductors twisted on the periphery of concentric circles or non-concentric circular core wires to make stranded conductors, so that the conductor area is minimized, the skin effect is maximized, and the load capacity of the conductor area is improved. Flow, can save about 70% of copper;

(2) Wrap the stranded conductor with a flat perforated PE/PVC insulating tape, and leave a suitable gap, which not only saves insulating materials but also has space for ventilation and cooling, and improves the original extrusion coating method;

(3) Conductor holder made of PE/PVC by extruding, with multiple grooves for embedding stranded conductors, punching holes on the plane of the conductor holder, with appropriate spacing, which not only saves plastic but also improves ventilation and cooling to increase current carrying capacity function;

(4) The hollow spiral core material made of fire-resistant engineering plastics is placed in the center of each conductor holder embedded with conductors, which is conducive to ventilation and bending, and at the same time reduces the temperature rise and has the effect of increasing the carrying capacity;

(5) The core wires of multi-core traditional electric wires are generally round (except for special cables). In the gap between two cores/three cores/multi-cores, the space is usually filled in a filling or filling manner (such as As shown in Figure 30), it not only wastes materials but also increases the circular area of the electric wire. The high-conductivity cable of the utility model can be made into semicircular, fan-shaped or special-shaped arbitrarily, so there is no need for fillers, which not only saves raw materials but also reduces the circular area of the cable At the same time, there is a special-shaped hollow spiral core material between the conductors of the multi-core cable (two-core/three-core/multi-core), so that there is a gap between the two conductors, which is conducive to ventilation and cooling, and increases the carrying capacity;

(6) The core wires of multi-core cables are overlapped with multiple layers of fixed frames with conductors embedded in them. After the mold is integrated, a layer of flat insulating tape with holes is wrapped to facilitate ventilation and reduce temperature rise;

(7) The periphery of the hollow copper cylinder of the utility model is provided with grooves, and a groove ring is provided at the central part of both ends, which is conducive to the insertion of the conductor into the groove, and then the conductor is pressed in the groove ring by terminal crimping. The part is curved, so it is firm and not easy to fall off.

Description of drawings

Fig. 1 is the concentric circular core wire stranded conductor of the present utility model, wherein the diameter of core wire and conductor is equal;

Fig. 2 is the non-concentric circular core wire stranded conductor of the present invention, wherein the diameters of the core wire and the conductor are unequal;

Fig. 3 is a hollow helix of the present utility model, wherein figure (a) is a circular hollow helix, and figure (b) is a special-shaped hollow helix;

Fig. 4 is the insulation tape that the utility model has holes;

Figure 5 is a stranded conductor wound with a perforated insulating tape;

Fig. 6 is that embodiment 1 is covered with PE band (or PE line) Mylar's high conductivity cable core wire;

Fig. 7 is the finished product of the single-core high-conductivity cable coated with PE/PVC through extrusion in Example 1;

Figure (a) among Fig. 8-Fig. 11 is the conductor holder of two grooves, three grooves, four grooves, five grooves of the present utility model respectively, and Fig. 8-Fig. 11 (b) is respectively Schematic diagram of the structure of the two-groove, three-groove, four-groove, five-groove conductor fixing frame embedded in the stranded conductor of the utility model;

Fig. 12 is the schematic diagram of the cable after primary twisting in embodiment 2;

Fig. 13 is the schematic diagram of the cable after secondary twisting in embodiment 2;

Fig. 14 is the core wire of the high conductivity cable covered with PE band (or PE line) Mylar in embodiment 2;

Fig. 15 is the finished product of high conductivity cable extruded and covered by PE/PVC in embodiment 2;

Figure (a) in Figure 16 is the high-conductivity cable core wire in embodiment 3, and figure (b) is the high-conductivity cable core wire wound with perforated insulating tape;

Figure (a) in Figure 17 is the three-core high-conductivity cable of embodiment 3, and figure (b) is the three-core high-conductivity cable core wire covered with PE tape (or PE line) Mylar;

Fig. 18 is the finished product of the three-core high-conductivity cable covered by PE/PVC in embodiment 3;

Fig. 19 is a hollow copper cylinder of the present invention;

Figures 20-22 are schematic diagrams of the installation of a hollow copper cylinder and a copper terminal for a single-core high-conductivity cable in Embodiment 2;

Fig. 23-Fig. 25 are the schematic diagrams of the assembly of the hollow copper cylinder and the copper terminal of the three-core high-conductivity cable in embodiment 3;

Fig. 26 is a schematic cross-sectional view of the finished single-core high-conductivity cable of Embodiment 2;

Figure 27 is a schematic cross-sectional view of a three-core high-conductivity cable in Example 3;

Fig. 28 is a structural schematic diagram of a high-conductivity cable in which a stranded conductor is embedded in a cylindrical conductor holder with holes;

Figure 29 is a schematic cross-sectional view of a single-core traditional cable;

Figure 30 is a schematic cross-sectional view of a three-core traditional cable;

Among them: 1-core wire; 2-conductor; 3-insulating tape; 41-circular hollow spiral body; 42-shaped hollow spiral body; 5-conductor fixing frame; 6-stranded conductor; 7-hollow copper cylinder; 8- terminals.

Detailed ways

In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

Below in conjunction with embodiment the utility model is further described.

Example 1

In this embodiment, the 3mm ² high-conductivity cable is three-core/1.0mm ² , which consists of The bare copper wire conductor 2 is stranded on the periphery of the non-concentric tensile PE plastic core wire 1 to make a stranded conductor 6, wherein "non-concentric circle" refers to the diameter of the tensile PE plastic core wire 1 and The diameters of the bare copper wire conductors 2 are not equal, and the outer edge of the stranded conductor ⁶ is wrapped with a PE/PVC insulating tape 3 with holes. , Extruded and covered. The steps of its specific manufacturing method are as follows:

导体2环绕在同芯圆抗拉PE塑料芯线1周沿，绞合成1.0mm²的绞合导体6(图2)备用；(1) Use 7 sticks

The conductor 2 is wrapped around the circumference of the concentric tensile PE plastic core wire 1, and twisted into a stranded conductor 6 of 1.0 mm ² (Fig. 2) for use;

(2) Take a flat PE/PVC insulating tape with holes (Figure 4) and wrap it around the periphery of the stranded conductor 6 and leave a gap for future use (Figure 5);

(3) Take the above-mentioned product (Figure 5) and three strands of ^1.0mm2 stranded conductor 6 are stranded, and then use PE Mylar to make a core wire of a ^3mm2 high-conductivity cable for use (Figure 6).

(4) Extrude and cover the high-conductivity cable core wire (Figure 6) with PE/PVC to form a 3mm ² high-conductivity cable (Figure 7).

The 3mm ² high-conductivity cable of this embodiment has been tested and its carrying capacity is 50A, which is equivalent to the carrying capacity of a traditional electric wire of 6mm ² .

Example 2

In this embodiment, the single-core 40mm ² high-conductivity cable is 35 cores/1.145mm ² , by The bare copper wire conductor 2 is stranded on the periphery of the non-concentric tensile PE plastic core wire 1 to make a stranded conductor 6, wherein "non-concentric circle" refers to the diameter of the tensile PE plastic core wire 1 and The diameters of the bare copper wire conductors 2 are not equal. The conductor holder 5 of the present embodiment is flat, including two types of two grooves and three grooves, and the first layer around the circumference of the circular hollow spiral body 41 is seven strands of two grooves embedded with twisted conductors 6 Conductor holder 5, the second layer is a three-groove conductor holder 5 with 7 strands embedded with stranded conductors 6, and the ^40mm high-conductivity cable of this embodiment adds PE Mylar to the above-mentioned two-layer conductor, and is coated by extrusion. The stranded conductor 6 with the insulation layer stripped is made of 5 stranded conductors, which are respectively embedded in the 7 V-shaped grooves of the hollow copper cylinder 7. There is a middle part of the two ends of the hollow copper cylinder 7. V-shaped groove ring, stranded conductor 6 is crimped into parallel connection through terminal 8. The steps of its specific manufacturing method are as follows:

导体2环绕在非同心圆抗拉PE芯线1周沿，绞合成一股，制成1.145mm²的绞合导体6(图2)备用；(1) Use 8 sticks

The conductor 2 is wrapped around the periphery of the non-concentric tensile PE core wire 1, twisted into one strand, and made into a stranded conductor 6 (Fig. 2) of 1.145mm ² for use;

(2) make circular hollow spiral body 41 (Fig. 3 (a)) with fireproof engineering plastics for standby;

(3) Make conductor holder 5 with two grooves and three grooves with PE/PVC through extruder, and punch as (Fig. 8(a), Fig. 9(a)) standby;

(4) After positioning the conductor holders 5 with two grooves and three grooves (Fig. 8(a), Fig. 9(a)) through the mould, take the stranded conductor 6 (Fig. 2) and pass it through the mold hole to lead out , the stranded conductor 6 is embedded in the groove of the conductor holder 5 and drawn out (Fig. 8(b), Fig. 9(b)), collected on the take-up spool for subsequent use;

(5) Get the circular hollow spiral body 41 (Fig. 3 (a)) and place it on the wire supply frame of the stranding machine, then import the hollow main shaft of the stranding machine and lead out;

(6) Take the products of step (4) (Fig. 8(b), Fig. 9(b)) each with 7 shafts, place them on the stranding racks of the first section and the second section respectively, and then adjust the tension to insert the The products of the two grooved conductor holders 5 (Fig. 8 (b)) of the stranded conductor 6 are brought together one by one, so that the circular hollow spiral body 41 is placed on the two grooved conductor holders 5 embedded with the stranded conductor 6. (Fig. 8(b)) in the center, drawn out from the integration of the mould, the first left-hand twisting is made into a core wire product (Fig. 12);

(7) Import the product (Fig. 12) obtained in step (6) into the hollow main shaft of the second-stage stranding machine, and adjust the tension of the products on the second-stage stranding machine (Fig. 9(b)) at the same time, and then lead them out one by one , the product (Fig. 12) obtained in step (6) is placed in the center of the 7-strand (Fig. 9(b)) product to gather together, and then introduced into the mold for integration and extraction, and the second right-hand twisting is made (Fig. 13 ) is ready for use;

(8) There is a wrapping machine in front of the second stranding machine. When the product (Fig. 13) is introduced into the duct of the wrapping machine and drawn out, the PE belt can be wrapped around the outer edge of the product (Fig. 13), and the wrapping machine can be rotated at the same time. The paper machine cooperates with the speed of the twisting machine to make the core wire product of PE Mylar (Figure 14), and collect it on the take-up shaft for standby;

(9) Take the product obtained in step (8) (Fig. 14), use PE/PVC as insulation and cover it through an extruder to make a 40mm ² high-conductivity cable (Fig. 15), and its cross-sectional view is shown in Fig. 26.

The process of installing the hollow copper cylinder and the copper terminal in this embodiment is as follows:

(1) Take the hollow copper cylinder with grooves (Figure 19) and the terminals for use, and the hollow copper cylinder is provided with 7 grooves;

(2) Strip the insulation layer of the single-core ^40mm2 high-conductivity cable to expose the stranded conductor (Figure 20);

(3) Every five stranded conductors of the single-core ^40mm2 conductors are grouped into a cluster, and embedded in the grooves of the hollow cylinder respectively (Figure 21);

(4) Position the terminal on the outer edge of the cylinder and the stranded conductor;

(5) Use a crimping tool to crimp the terminal, the hollow copper cylinder, and the stranded conductor together firmly (Figure 22);

(6) When crimping, the flange of the terminal and the groove of the cylinder force the stranded conductor into a curved shape, so that the three are tightly combined and will not fall off.

The carrying capacity of the 40mm ² high-conductivity cable in this implementation is 450A, which is equivalent to the carrying capacity of the traditional electric wire 150mm ² , and its carrying capacity is 3.75 times that of the traditional electric wire (Figure 29).

Example 3

的裸铜线导体2绞合在非同芯圆抗拉PE塑料芯线1的周沿制成绞合导体6，其中“非同芯圆”是指该抗拉PE塑料芯线1的直径与裸铜线导体2的直径不相等。本实施例的导体固定架5为扁平状，包括二沟槽、三沟槽、四沟槽和五沟槽四种类型的导体固定架5，其中每个单芯高导电缆导体由嵌有绞合导体6的二沟槽、三沟槽、四沟槽和五沟槽的导体固定架5重叠而成，本实施例的三芯16mm²高导电缆由三轴上述的高导电缆单根芯线和三根异形中空螺旋体42相互间隔均匀环绕在圆形中空螺旋体41周沿组成，再加以PE麦拉后、以PE/PVC押出被覆制成高导电缆。将绞合导体6剥去绝缘层，露出导体，以2根绞合导体6为一簇，分别一一嵌在中空铜柱体7的7条V形沟槽中，中空铜柱体7的两端中部有一V形凹槽环，绞合导体6经端子8压着成并联状。其中的异形中空螺旋体42主体为中空三角螺旋状，具体结构如图3(b)所示。其具体制造方法的步骤如下：In this embodiment, the three-core 16mm ² high-conductivity cable is 14/1.145mm ² , which consists of

The bare copper wire conductor 2 is stranded on the periphery of the non-concentric tensile PE plastic core wire 1 to make a stranded conductor 6, wherein "non-concentric circle" refers to the diameter of the tensile PE plastic core wire 1 and The diameters of the bare copper wire conductors 2 are not equal. The conductor fixing frame 5 of the present embodiment is flat, and comprises four types of conductor fixing frames 5 of two grooves, three grooves, four grooves and five grooves. The two grooves, the three grooves, the four grooves and the ^five grooves of the conductor fixing frame 5 of the combined conductor 6 are overlapped. The wire and three special-shaped hollow helixes 42 are evenly spaced around the circumference of the circular hollow helix 41. After adding PE mylar, it is extruded and covered with PE/PVC to make a high-conductivity cable. Strip off the insulation layer of the stranded conductor 6 to expose the conductor, and use 2 stranded conductors 6 as a cluster, respectively embedded in the 7 V-shaped grooves of the hollow copper cylinder 7, and the two hollow copper cylinders 7 There is a V-shaped groove ring in the middle of the end, and the stranded conductor 6 is crimped into a parallel connection through the terminal 8. The main body of the special-shaped hollow helix 42 is a hollow triangular helix, and the specific structure is shown in FIG. 3( b ). The steps of its specific manufacturing method are as follows:

(1) Get the products of (Fig. 3(a), (b)) and (Fig. 4) for subsequent use;

(2) The four kinds of products (Fig. 8(b), Fig. 9(b), Fig. 10(b), Fig. 11(b)) are superimposed in sequence so that (Fig. 16(a)) is drawn out from the mold and introduced into the package Leading out of the paper machine conduit;

(3) Take (Fig. 4) PE/PVC insulating tape 3 and place it on the wrapping machine, wrap and fix it on the periphery of the product (Fig. 16(a)), and rotate the wrapping machine synchronously with the extraction shaft to make it as (Fig. 16 The product of (b)) is ready for use.

(4) Take (Fig. 16(b)) and (Fig. 3(b)) the three axes of the products, place them on the stranding machine and draw them out at intervals, and adjust the tension at the same time, Fig. 16(b) and (Fig. 3(b) )) The products meet, and the products of the circular hollow spiral body 41 (Fig. 3 (a)) are placed in the center of (Fig. 16 (b)) and (Fig. 3 (b)), and are introduced into the mould, such as (Fig. 17 (a)) products;

(5) There is a wrapping machine at the front end of the twisting machine. When the product (Fig. 17(a)) is drawn out, it is then introduced into the duct of the wrapping machine and then wrapped around the PE Mylar (Fig. 17(a)). Peripheral fixed;

(6) Start the wrapping machine and the twisting machine synchronously to make products such as (Fig. 17 (b)), and collect it on the take-up shaft for subsequent use;

(7) Using PE/PVC as raw material, extrude and cover the product (Fig. 17(b)) to make a three-core 16mm ² high-conductivity cable such as (Fig. 18), and its cross-sectional view is shown in Fig. 27.

The process of installing the hollow copper cylinder and the copper terminal in this embodiment is basically the same as the installation process in Embodiment 3, the difference is that: three hollow copper cylinders (Figure 19) and three terminals are taken, and the hollow copper cylinder is set There are 6 grooves, and the stranded conductors 6 of the high-conductivity cable are divided into 7 clusters of 2 stranded conductors, which are respectively embedded in the grooves of the hollow cylinder (as shown in Figure 23, Figure 24 and Figure 25).

The three-core 16mm ² high conductivity cable of this embodiment has a current carrying capacity of 200A, which is equivalent to the traditional 50mm ² current carrying capacity.

Example 4

的裸铜线导体2绞合在同芯圆抗拉PE塑料芯线1的周沿制成绞合导体6(图1)。其中“同芯圆”是指该抗拉PE塑料芯线1的直径与裸铜线导体2的直径相等。The basic structure of the high-conductivity cable of this embodiment is the same as that of Embodiment 1, and the difference is that it consists of 6

The bare copper wire conductor 2 is twisted on the periphery of the concentric circle tensile PE plastic core wire 1 to make a stranded conductor 6 (Fig. 1). Wherein "concentric circle" means that the diameter of the tensile PE plastic core wire 1 is equal to the diameter of the bare copper wire conductor 2 .

Example 5

的裸铜线导体2绞合在非同芯圆抗拉PE塑料芯线1的周沿制成绞合导体6。The basic structure of the high-conductivity cable of this embodiment is the same as that of Embodiment 1, and the difference is that it consists of 8

The bare copper wire conductor 2 is stranded on the periphery of the non-concentric tensile PE plastic core wire 1 to make a stranded conductor 6.

Example 6

The high-conductivity cable of this embodiment consists of five stranded conductors 6 (Fig. 2) respectively embedded in cylindrical conductor holders 5 with five grooves (as shown in Fig. 28), wherein the cylindrical conductors are fixed The center of the frame 5 is hollow, and the cylindrical surface is provided with holes, and the three strands of the cylindrical conductor fixing frame 5 embedded with the stranded conductor 6 are twisted together to make a high-conductivity cable core wire. The method of carrying out PE mylar, extruding and covering, and installing the hollow copper cylinder and copper terminal is the same as that of embodiment 2.

Example 7

的裸铜线导体2绞合在同芯圆抗拉PE塑料芯线1的周沿制成绞合导体6(图1)，且圆形中空螺旋体41周沿进行了三次绞合，第三次绞合采用7股嵌有绞合导体6的四沟槽导体固定架5。The basic structure and manufacturing method of the high-conductivity cable of this embodiment are the same as embodiment 2, and the difference is: by 6

The bare copper wire conductor 2 is stranded on the circumference of the same core round tensile PE plastic core wire 1 to make a stranded conductor 6 (Fig. 1), and the circumference of the circular hollow spiral body 41 has been twisted three times, and the third time Stranding adopts 7 strands of four-groove conductor holders 5 embedded with twisted conductors 6 .

Example 8

The high-conductivity cable of the present embodiment is a 5-core ^16mm high-conductivity cable, and the five-core 16mm ^high- conductivity cable of the present embodiment consists of a five-axis high-conductivity cable single core and five special-shaped hollow spirals 42 that are evenly spaced around a circular hollow The helix 41 is composed of the periphery, and other structures and manufacturing methods thereof are the same as those described in Embodiment 3.

Example 9

The basic structure of this embodiment is the same as that of Embodiment 3, except that the stranded conductor 6 is twisted by seven bare copper-clad aluminum wire conductors 2 on core wires 1 of non-concentric circles, and other structures are the same as those of Embodiment 3. stated.

Example 10

The basic structure of this embodiment is the same as that of embodiment 3, except that the stranded conductor 6 is twisted by six bare aluminum wire conductors 2 on the core wire 1 of the same core circle, and other structures are the same as those described in embodiment 3.

Claims (7)

1. A highly conductive cable with improved conductor structure, characterized in that: A plurality of conductors (2) are stranded on the periphery of the concentric or non-concentric core wires (1) to make a stranded conductor (6), and the outer edge of the stranded conductor (6) is covered with an insulating tape with holes (3) WRAP. 2. A highly conductive cable with improved conductor structure, characterized in that: A plurality of conductors (2) are stranded on the periphery of concentric circles or non-concentric circular core wires (1) to make a stranded conductor (6), and the stranded conductor (6) is embedded in a multi-groove with holes In the groove of the conductor fixing frame (5), the conductor fixing frame (5) is flat or hollow circular. 3. A highly conductive cable with improved conductor structure, characterized in that: A plurality of flat conductor fixing frames (5) embedded with stranded conductors (6) are wrapped around the circumference of the circular hollow spiral body (41), and then wrapped with PE tape or PE wire Mylar. 4. A highly conductive cable with improved conductor structure, characterized in that: A plurality of flat conductor fixing frames (5) embedded with stranded conductors (6) are overlapped to form a multi-core high-conductivity cable core wire, and the outer edge of the multi-core high-conductivity cable core wire is covered with an insulating tape (3) with holes. Wrapping, there are special-shaped hollow spirals (42) arranged between each multi-core high-conductivity cable core wire, the above-mentioned special-shaped hollow spiral body (42) is a hollow triangular spiral shape, the multi-core high-conductivity cable core wire and the special-shaped hollow spiral body (42) ) are evenly spaced from each other around the circumference of the circular hollow spiral body (41). 5. The high-conductivity cable with improved conductor structure according to claim 2, characterized in that: The conductor (2) of the high-conductivity cable is bare copper wire, copper-clad aluminum wire or aluminum wire, and the core wires (1) of concentric circles or non-concentric circles are non-conductors; the stranded conductor (6) of the high-conductivity cable is 1, 2, 3 or 5 are in a cluster, respectively embedded in the V-shaped groove of the hollow copper cylinder (7), there is a V-shaped groove ring in the middle of both ends of the hollow copper cylinder (7), and the conductor core The insulation layer of the wire is stripped and crimped into a parallel connection through the terminal (8). 6. The high-conductivity cable with improved conductor structure according to claim 3, characterized in that: The conductor (2) of the high-conductivity cable is bare copper wire, copper-clad aluminum wire or aluminum wire, and the core wires (1) of concentric circles or non-concentric circles are non-conductors; the stranded conductor (6) of the high-conductivity cable is 1, 2, 3 or 5 are in a cluster, respectively embedded in the V-shaped groove of the hollow copper cylinder (7), there is a V-shaped groove ring in the middle of both ends of the hollow copper cylinder (7), and the conductor core The insulation layer of the wire is stripped and crimped into a parallel connection through the terminal (8). 7. The high-conductivity cable with improved conductor structure according to claim 4, characterized in that: The conductor (2) of the high-conductivity cable is bare copper wire, copper-clad aluminum wire or aluminum wire, and the core wires (1) of concentric circles or non-concentric circles are non-conductors; the stranded conductor (6) of the high-conductivity cable is 1, 2, 3 or 5 are in a cluster, respectively embedded in the V-shaped groove of the hollow copper cylinder (7), there is a V-shaped groove ring in the middle of both ends of the hollow copper cylinder (7), and the conductor core The insulation layer of the wire is stripped and crimped into a parallel connection through the terminal (8). the

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