High-power cooling cable

Abstract

The invention specifically discloses a high-power cooling cable, and relates to the technical field of wires and cables, the high-power cooling cable comprises a wire core, a plurality of cooling pipes, a filling layer, a braiding layer and a sheath, and the plurality of cooling pipes are arranged around the peripheral side of the wire core; the filling layer is arranged on the peripheral side of the wire core and wraps and fixes the plurality of cooling pipes; the braid layer is arranged on the peripheral side of the filling layer; according to the high-power cooling cable disclosed by the embodiment of the invention, the plurality of cooling pipes are arranged on the peripheral side of the wire core in a surrounding manner, and the filling layer is arranged on the peripheral side of the wire core and wraps and fixes the plurality of cooling pipes, so that when the cable works and emits heat, the cooling pipes can exchange heat with the wire core, and the wire core is cooled; therefore, the whole cable is cooled, and the safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wires and cables, and in particular to a high-power cooling cable. Background Art

[0002] AC cables have a large capacitive current, so their transmission distance is limited. High-power DC cables have no capacitive current, so their transmission distance is not limited by capacitive current, and are widely used in power systems. However, current high-power DC cables generate severe heat during operation and have poor safety. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a high-power cooling cable, which can cool down automatically when generating heat during operation, thereby improving safety.

[0004] According to an embodiment of the present invention, a high-power cooling cable includes a wire core, a cooling tube, a filling layer, a braided layer and a sheath. The cooling tube is provided in plurality, and the plurality of cooling tubes are arranged around the outer peripheral side of the wire core; the filling layer is arranged on the outer peripheral side of the wire core, and wraps and fixes the plurality of cooling tubes; the braided layer is arranged on the outer peripheral side of the filling layer; and the sheath is arranged on the outer peripheral side of the braided layer.

[0005] The high-power cooling cable according to the embodiment of the present invention has at least the following beneficial effects: since a plurality of cooling tubes are arranged around the outer circumference of the core, and the filling layer is arranged on the outer circumference of the core and wraps and fixes the plurality of cooling tubes, when the cable is working and generating heat, the cooling tube can exchange heat with the core, thereby cooling the core and further cooling the entire cable, thereby improving safety.

[0006] According to an embodiment of the present invention, the cooling pipe is cooled by water circulation or coolant circulation in the pipe.

[0007] According to an embodiment of the present invention, a plurality of cooling tubes are evenly spaced apart along the circumference of the wire core.

[0008] According to one embodiment of the present invention, the wire core includes a conductor, a first fire-resistant wrapping tape, a second fire-resistant wrapping tape and an insulating layer, the first fire-resistant wrapping tape and the second fire-resistant wrapping tape are sequentially wrapped around the outer circumference of the conductor, and the insulating layer is arranged on the outer circumference of the second fire-resistant wrapping tape.

[0009] According to an embodiment of the present invention, the first fire-resistant wrapping tape is made of phlogopite material, and the second fire-resistant wrapping tape is a glass fiber tape.

[0010] According to an embodiment of the present invention, the insulating layer is formed by extruding a 150° C. cross-linked polyolefin insulating material.

[0011] According to one embodiment of the present invention, it also includes a third fire-resistant wrapping tape and a fourth fire-resistant wrapping tape, wherein the third fire-resistant wrapping tape and the fourth fire-resistant wrapping tape are located between the outer peripheral side of the filling layer and the inner peripheral side of the braided layer, and are sequentially wrapped around the outer peripheral side of the filling layer.

[0012] According to an embodiment of the present invention, the third refractory wrapping tape is made of phlogopite material, and the fourth refractory wrapping tape is a glass fiber tape.

[0013] According to an embodiment of the present invention, the braided layer is woven from copper wires.

[0014] According to an embodiment of the present invention, the sheath is formed by extruding a 150° C. cross-linked polyolefin sheath material.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic cross-sectional view of a high-power cooling cable according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] High power cooling cable 1000;

[0020] Wire core 100; conductor 110; first fire-resistant wrapping tape 120; second fire-resistant wrapping tape 130; insulating layer 140;

[0021] Cooling pipe 200;

[0022] Filling layer 300;

[0023] Braid 400;

[0024] Sheath 500;

[0025] The third fire-resistant wrapping tape 600;

[0026] Fourth fire-resistant wrapping tape 700 . DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it is necessary to understand that descriptions involving orientations, such as up, down, inside, outside, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] AC cables have a large capacitive current, so their transmission distance is limited. High-power DC cables have no capacitive current, so their transmission distance is not limited by capacitive current, and are widely used in power systems. However, current high-power DC cables generate severe heat during operation and have poor safety.

[0032] To this end, the present invention proposes a high-power cooling cable 1000, specifically referring to the accompanying drawings of the specification Figure 1 shown.

[0033] Reference Figure 1 As shown, a high-power cooling cable 1000 according to an embodiment of the present invention includes a core 100, a cooling tube 200, a filling layer 300, a braided layer 400 and a sheath 500. Among them, there are multiple cooling tubes 200, and the multiple cooling tubes 200 are arranged around the outer peripheral side of the core 100. In other words, each cooling tube 200 is arranged on the outer peripheral side of the core 100 and surrounds the core 100 along the circumference of the core 100. For details, refer to Figure 1 As shown, in one embodiment, there are 10 cooling tubes 200, and the 10 cooling tubes 200 are arranged around the outer peripheral side of the wire core 100. It should be noted that the number of cooling tubes 200 can also be 9, 11, 12, etc., which is not specifically limited here. It can be understood that when the cable is working and heating, the cooling tube 200 can exchange heat with the wire core 100, so as to cool the wire core 100, thereby achieving cooling of the entire cable and improving safety.

[0034] It should be noted that the cooling tube 200 realizes cooling through water circulation or coolant circulation in the tube. That is to say, in one embodiment, the cooling tube 200 realizes cooling through water circulation in the tube. When the core 100 is heated during operation, the water circulation in the cooling tube 200 is started, and the core 100 temperature is reduced through continuous heat exchange and water circulation processes, thereby ensuring that the high-power cooling cable 1000 can work safely.

[0035] In another embodiment, the cooling tube 200 realizes cooling by circulating the coolant in the tube. When the core 100 is heated during operation, the coolant circulation in the cooling tube 200 is started. Through continuous heat exchange and coolant circulation, the core 100 temperature is reduced to ensure that the high-power cooling cable 1000 can work safely. In one embodiment, the coolant is ethylene glycol. It is understandable that ethylene glycol is a commonly used liquid cooling medium with good thermal conductivity and can effectively take away the heat generated by the cable.

[0036] Reference Figure 1 As shown, in one embodiment, a plurality of cooling tubes 200 are evenly spaced along the circumference of the core 100. It should be noted that, in this embodiment, on the cross section of the high-power cooling cable 1000, the length of the center line of each two adjacent cross sections of the cooling tubes 200 is equal. It can be understood that, through the above arrangement, the position distribution of the plurality of cooling tubes 200 can be made more balanced, and the core 100 can be cooled more evenly.

[0037] Specific reference Figure 1 As shown, in one embodiment, 10 cooling tubes 200 are evenly spaced along the circumference of the wire core 100, so as to evenly cool the wire core 100. It should be noted that the number of cooling tubes 200 can also be 9, 11, 12, etc., which is not specifically limited here.

[0038] Reference Figure 1 As shown, in addition, the filling layer 300 is arranged on the outer peripheral side of the core 100, and the filling layer 300 wraps and fixes a plurality of cooling tubes 200. That is, the filling layer 300 plays a role in fixing the cooling tubes 200, so that the cooling tubes 200 are stably positioned in the high-power cooling cable 1000 and stably play a cooling and cooling role.

[0039] In one embodiment, the filling layer 300 is made of high-polymerization polyvinyl chloride resin. It should be noted that high-polymerization polyvinyl chloride resin refers to polyvinyl chloride resin with an average polymerization degree of more than 1700, which has the advantages of high strength, good weather resistance, aging resistance, fatigue resistance and wear resistance, and can also play a role in fixing and supporting the cooling pipe 200, and is an ideal material for the filling layer 300.

[0040] In another embodiment, the filling layer 300 is composed of a plurality of polypropylene ropes. It should be noted that the polypropylene rope is a commonly used filling material, which has the characteristics of being non-absorbent, corrosion-resistant, mildew-resistant, abrasion-resistant, and having a long service life, and can also play a role in fixing and supporting the cooling pipe 200, and is an ideal material for the filling layer 300.

[0041] In another embodiment, the filling layer 300 is composed of a plurality of glass fiber ropes. It should be noted that the glass fiber rope is a rope made of glass fiber, which has the properties of high temperature resistance, high strength, good insulation, etc., and can also play a role in fixing and supporting the cooling pipe 200, and is an ideal material for the filling layer 300.

[0042] Reference Figure 1 As shown, a high-power cooling cable 1000 according to an embodiment of the present invention, the core 100 includes a conductor 110, a first fire-resistant wrapping tape 120, a second fire-resistant wrapping tape 130 and an insulating layer 140. Among them, the first fire-resistant wrapping tape 120 and the second fire-resistant wrapping tape 130 are wrapped around the outer peripheral side of the conductor 110 in sequence. That is to say, the first fire-resistant wrapping tape 120 is wrapped around the outer peripheral side of the conductor 110, and the second fire-resistant wrapping tape 130 is wrapped around the outer peripheral side of the first fire-resistant wrapping tape 120. In addition, the insulating layer 140 is arranged on the outer peripheral side of the second fire-resistant wrapping tape 130. It can be understood that through the above-mentioned arrangement, the first fire-resistant wrapping tape 120 and the second fire-resistant wrapping tape 130 enhance the fire resistance of the core 100, thereby enhancing the fire resistance of the high-power cooling cable 1000. In addition, it can be understood that the insulating layer 140 plays an insulating role on the core 100.

[0043] In one embodiment, the first fire-resistant wrapping tape 120 is made of phlogopite material, and the second fire-resistant wrapping tape 130 is a glass fiber tape. It should be noted that the phlogopite material has excellent electrical insulation and high temperature resistance, and can effectively improve the fire resistance of the wire core 100. It should also be noted that the glass fiber tape is a strip material made of glass fiber, which has good insulation, mechanical strength and flame retardancy, and can effectively improve the fire resistance of the wire core 100.

[0044] In one embodiment, the insulating layer 140 is formed by extruding a 150°C cross-linked polyolefin insulating material. It should be noted that the 150°C cross-linked polyolefin insulating material is a special polyolefin material prepared by radiation cross-linking technology, which has excellent high temperature resistance and flame retardant properties, and also has environmental protection, halogen-free and low smoke characteristics. At the same time, the material can work for a long time at a temperature of up to 150°C, meeting the application requirements in various high temperature environments. It is an ideal material for the insulating layer 140 and can improve the fire resistance of the high-power cooling cable 1000.

[0045] Reference Figure 1As shown, in a high-power cooling cable 1000 according to an embodiment of the present invention, a braided layer 400 is arranged on the outer peripheral side of the filling layer 300. It should be noted that the braided layer 400 plays a protective role for the internal structure. In one embodiment, the braided layer 400 is woven from copper wires. It is understandable that the braided layer 400 woven from copper wires can not only play a protective role for the internal structure, but also improve the anti-interference ability of the high-power cooling cable 1000.

[0046] Reference Figure 1 As shown, in a high-power cooling cable 1000 according to an embodiment of the present invention, the sheath 500 is arranged on the outer peripheral side of the braided layer 400. It should be noted that the sheath 500 plays a protective role for the internal structure. In one embodiment, the sheath 500 is extruded from a 150°C cross-linked polyolefin sheath material. It should be noted that the 150°C cross-linked polyolefin sheath material is a special polyolefin material prepared by radiation cross-linking technology, which has excellent high temperature resistance and flame retardant properties, and also has environmental protection, halogen-free and low smoke characteristics. At the same time, the material can work for a long time at a temperature as high as 150°C, meeting the application requirements in various high temperature environments. It is an ideal material for the sheath 500 and can improve the fire resistance of the high-power cooling cable 1000.

[0047] Reference Figure 1 As shown, a high-power cooling cable 1000 according to an embodiment of the present invention further includes a third fire-resistant wrapping tape 600 and a fourth fire-resistant wrapping tape 700. The third fire-resistant wrapping tape 600 and the fourth fire-resistant wrapping tape 700 are located between the outer peripheral side of the filling layer 300 and the inner peripheral side of the braided layer 400, and are wrapped around the outer peripheral side of the filling layer 300 in sequence. That is to say, the third fire-resistant wrapping tape 600 is located between the outer peripheral side of the filling layer 300 and the inner peripheral side of the braided layer 400, the fourth fire-resistant wrapping tape 700 is located between the outer peripheral side of the filling layer 300 and the inner peripheral side of the braided layer 400, the third fire-resistant wrapping tape 600 is wrapped around the outer peripheral side of the filling layer 300, and the fourth fire-resistant wrapping tape 700 is wrapped around the outer peripheral side of the third fire-resistant wrapping tape 600. It can be understood that, through the above-mentioned configuration, the third fire-resistant wrapping tape 600 and the fourth fire-resistant wrapping tape 700 effectively improve the fire resistance of the high-power cooling cable 1000.

[0048] In one embodiment, the third fire-resistant wrapping tape 600 is made of phlogopite material, and the fourth fire-resistant wrapping tape 700 is a glass fiber tape. It should be noted that the phlogopite material has excellent electrical insulation performance and high temperature resistance, and can effectively improve the fire resistance of the high-power cooling cable 1000. It should also be noted that the glass fiber tape is a strip material made of glass fiber, which has good insulation, mechanical strength and flame retardancy, and can effectively improve the fire resistance of the high-power cooling cable 1000.

[0049] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. High-power cooling cable, characterized in that: include: Wire core; A plurality of cooling tubes are provided, and the plurality of cooling tubes are arranged around the outer peripheral side of the wire core; A filling layer is provided on the outer peripheral side of the wire core and wraps and fixes the plurality of cooling tubes; A braided layer, arranged on the outer peripheral side of the filling layer; The sheath is arranged on the outer peripheral side of the braided layer.

2. The high-power cooling cable according to claim 1, characterized in that: The cooling pipe is cooled by circulating water or coolant in the pipe.

3. The high-power cooling cable according to claim 1, characterized in that: The plurality of cooling tubes are evenly spaced apart along the circumference of the wire core.

4. The high-power cooling cable according to claim 1, characterized in that: The wire core includes a conductor, a first fire-resistant wrapping tape, a second fire-resistant wrapping tape and an insulating layer. The first fire-resistant wrapping tape and the second fire-resistant wrapping tape are sequentially wrapped around the outer circumference of the conductor, and the insulating layer is arranged on the outer circumference of the second fire-resistant wrapping tape.

5. The high-power cooling cable according to claim 4, characterized in that: The first fire-resistant wrapping tape is made of phlogopite material, and the second fire-resistant wrapping tape is a glass fiber tape.

6. The high-power cooling cable according to claim 4, characterized in that: The insulating layer is formed by extruding 150° C. cross-linked polyolefin insulating material.

7. The high-power cooling cable according to claim 1, characterized in that: It also includes a third fire-resistant wrapping tape and a fourth fire-resistant wrapping tape, which are located between the outer peripheral side of the filling layer and the inner peripheral side of the braided layer, and are sequentially wrapped around the outer peripheral side of the filling layer.

8. The high-power cooling cable according to claim 7, characterized in that: The third refractory wrapping tape is made of phlogopite material, and the fourth refractory wrapping tape is a glass fiber tape.

9. The high-power cooling cable according to claim 1, characterized in that: The braided layer is braided from copper wires.

10. The high-power cooling cable according to claim 1, characterized in that: The sheath is formed by extruding a 150°C cross-linked polyolefin sheath material.

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