High-frequency power transmission cable

Abstract

The utility model belongs to the field of high-frequency induction heating, and particularly relates to a high-frequency power transmission cable, which comprises an inner pole cable, two ends of the inner pole cable are respectively and fixedly connected with inner pole cable wiring structures, an insulating inner wall pipe is coated outside the inner pole cable, and an outer pole power transmission layer is coated outside the insulating inner wall pipe. The two ends of the outer electrode power transmission layer are fixedly connected with outer electrode cable wiring structures respectively, and the outer electrode power transmission layer is wrapped with an insulating outer wall pipe. The inner pole cable wiring structure and the outer pole cable wiring structure are separated through an insulating cylinder. The inner electrode cable wiring structures at the two ends are connected with first water nozzles respectively, a gap between the inner electrode cable and the insulating inner wall pipe forms a first water path, and the first water path communicates with the first water nozzles at the two ends; the outer electrode cable wiring structures at the two ends are connected with the second water nozzles respectively, a gap between the insulating inner wall pipe and the insulating outer wall pipe forms a second water path, and the second water path communicates with the second water nozzles at the two ends.

Description

Technical Field

[0001] The utility model belongs to the field of high-frequency induction heating, and in particular relates to a high-frequency power transmission cable. Background Art

[0002] Cables used in high-frequency induction equipment have severe heat generation and require cooling water circuits, such as CN209729598U. Therefore, the overall size of the cable is large, the space occupied is large, and the use is inconvenient.

[0003] PCT / CN2021 / 086633 proposes a high-voltage, high-power liquid-cooled charging cable, which integrates the positive cable, the negative cable and the cooling water circuit into a whole cable, but in essence it is to wrap the two cables and two water pipes in a large outer skin, reducing the overall complexity of the transmission cable, but the overall volume is still large. Utility Model Content

[0004] In order to solve the problem of large volume of existing high-frequency power transmission cables, the utility model provides a high-frequency power transmission cable.

[0005] The purpose of the utility model is achieved in the following manner: a high-frequency power transmission cable, comprising an inner pole cable 11, the two ends of the inner pole cable 11 are respectively fixedly connected to the inner pole cable wiring structure, the inner pole cable 11 is externally coated with an insulating inner wall tube 9, the insulating inner wall tube 9 is externally coated with an outer pole transmission layer 12, the two ends of the outer pole transmission layer 12 are respectively fixedly connected to the outer pole cable wiring structure, and the outer pole transmission layer 12 is externally coated with an insulating outer wall tube 13; the inner pole cable wiring structure and the outer pole cable wiring structure are separated by an insulating tube 4;

[0006] The inner pole cable connection structures at both ends are respectively connected to the first water nozzles 1, and the gap between the inner pole cable 11 and the insulating inner wall tube 9 forms a first water path, and the first water path connects the first water nozzles 1 at both ends;

[0007] The outer pole cable connection structures at both ends are respectively connected to the second water nozzles 6 , and the gap between the insulating inner wall tube 9 and the insulating outer wall tube 13 forms a second water path, which connects the second water nozzles 6 at both ends.

[0008] Furthermore, the inner pole cable wiring structure includes an inner pole wiring ring 2 and an inner pole connector 5. The inner pole connector 5 is tubular, and one end of the inner pole connector 5 passes through the inner body of the insulating tube 4 and the inner pole wiring ring 2 in sequence, and is connected to the first water nozzle 1; the other end of the inner pole connector 5 is fixedly connected to the end of the inner pole cable 11, and the outer wall of the inner pole connector 5 is sleeved and interference fit with one end of the insulating inner wall tube 9, and the inner pole connector 5 located in the insulating inner wall tube 9 opens to the side to form a water inlet and outlet.

[0009] Furthermore, the outer pole cable wiring structure includes an outer pole wiring ring 7 and an outer pole connector 8. The outer pole wiring ring 7 is fixedly connected to the outside of the insulating tube 4. The end of the outer pole wiring ring 7 is sleeved on one end of the outer pole transmission layer 12. A fixing ring 10 is arranged at the sleeve joint to clamp the outer pole transmission layer 12 on the outer pole wiring ring 7; one end of the outer pole connector 8 is fixedly connected to the outer pole wiring ring 7, and a gap is formed between the other end and the outer pole wiring ring 7. One side of the outer pole connector 8 is connected to the second water nozzle 6, and the outer wall of the outer pole connector 8 is sleeved and interference fit with one end of the insulating outer wall tube 13.

[0010] Furthermore, the inner pole cable 11, the outer pole transmission layer 12, the inner pole wiring ring 2, the inner pole connector 5, the outer pole wiring ring 7, and the outer pole connector 8 are made of copper.

[0011] Furthermore, the outer pole power transmission layer 12 is a copper mesh.

[0012] Compared with the prior art, the two-stage cable of the utility model is (almost) coaxially arranged in sequence through a layered structure and separated by an insulating structure, and two layers of water paths are formed corresponding to the two-stage cable according to the layered structure. The volume size of the entire cable can be designed by designing the size of the water path cavity during design. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of a high-frequency transmission cable;

[0014] Figure 2 This is an exploded view of one end of a high-frequency transmission cable;

[0015] Figure 3 It is a cross-sectional view of one end of a high-frequency transmission cable;

[0016] Figure 4 It is a cross-sectional view of the whole high-frequency transmission cable;

[0017] Figure 5 This is the second exploded view of one end of a high-frequency transmission cable;

[0018] Figure 6 It is a schematic diagram of the structure of the high-frequency transmission cable terminal block, where Figure 6 .1 is a terminal block used to cooperate with the external terminal ring; Figure 6 .2 is a terminal socket used to cooperate with the inner pole terminal ring.

[0019] Among them, 1 is the first water faucet, 2 is the inner pole connecting ring, 3 is the fixing screw, 4 is the insulating tube, 5 is the inner pole connecting piece, 6 is the second water faucet, 7 is the outer pole connecting ring, 8 is the outer pole connecting piece, 9 is the insulating inner wall pipe, 10 is the fixing ring, 11 is the inner pole cable, 12 is the outer pole transmission layer, and 13 is the insulating outer wall pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the present utility model, unless otherwise expressly specified and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0022] As attached Figure 1-5 As shown, a high-frequency power transmission cable comprises an inner pole cable 11, both ends of the inner pole cable 11 are respectively fixedly connected to the inner pole cable wiring structure, the inner pole cable 11 is externally coated with an insulating inner wall tube 9, the insulating inner wall tube 9 is externally coated with an outer pole transmission layer 12, both ends of the outer pole transmission layer 12 are respectively fixedly connected to the outer pole cable wiring structure, the outer pole transmission layer 12 is externally coated with an insulating outer wall tube 13; the inner pole cable wiring structure and the outer pole cable wiring structure are separated by an insulating tube 4;

[0023] In detail, the inner pole cable 11, the outer pole transmission layer 12, the insulating inner wall tube 9, and the insulating outer wall tube 13 are made of soft materials to ensure that the middle part of the cable has bending properties. Preferably, the inner pole cable 11 is a copper wire (bundle), the outer pole transmission layer 12 is a copper (woven) mesh, the insulating inner wall tube 9 is a rubber tube, and the insulating outer wall tube 13 is the cable sheath of the prior art.

[0024] The inner pole cable connection structures at both ends are respectively connected to the first water nozzles 1, and the gap between the inner pole cable 11 and the insulating inner wall tube 9 forms a first water path, and the first water path connects the first water nozzles 1 at both ends;

[0025] The outer pole cable connection structures at both ends are respectively connected to the second water nozzles 6 , and the gap between the insulating inner wall tube 9 and the insulating outer wall tube 13 forms a second water path, which connects the second water nozzles 6 at both ends.

[0026] Compared with the prior art, the two-stage cable of the utility model is sequentially (almost) coaxially arranged through a layered structure and separated by an insulating structure, and two layers of waterways are formed corresponding to the two-stage cable according to the layered structure. The volume of the entire cable can be designed by designing the size of the waterway cavity during design. Other advantages are:

[0027] 1. Water and electricity are integrated into one, with simple structure; easy to install and operate.

[0028] 2. Coaxial cables of different lengths can be customized to meet different on-site usage requirements.

[0029] 3. Coaxial cable has certain flexible connection characteristics and can be used in movable working conditions.

[0030] 4. Two water paths, two electricity paths, coaxial, no surface skin effect when transmitting medium and high frequency current, less leakage inductance, small power loss, high power transmission efficiency and energy saving.

[0031] Furthermore, the inner pole cable wiring structure includes an inner pole wiring ring 2 and an inner pole connector 5, the inner pole connector 5 is tubular, one end of the inner pole connector 5 passes through the inner body of the insulating tube 4 and the inner pole wiring ring 2 in sequence, and is connected to the first water nozzle 1; in detail, one end of the inner pole connector 5 is an external thread, one end of the inner pole connector 5 cooperates with the internal thread in the inner body of the insulating tube 4 and the internal thread in the inner pole wiring ring 2 in sequence, and the end extending out of the inner pole wiring ring 2 is provided with an external thread, which cooperates with the internal thread of the first water nozzle 1; the other end of the inner pole connector 5 is fixedly connected to the end of the inner pole cable 11, and the two can be fixed by a clamping structure or by welding. The outer wall of the component 5 is sleeved and interference fit with one end of the insulating inner wall tube 9. Preferably, a pagoda pattern is provided on the outer wall of the middle part of the inner pole connecting component 5, and the insulating inner wall tube 9 is interference fit outside the pagoda pattern, which plays a fixing role on the one hand and a water leakage prevention role on the other hand. The inner pole connecting component 5 located in the insulating inner wall tube 9 opens to the side to form a water inlet and outlet; so that the inner stage forms a water path of the first water nozzle 1-inner pole connecting component 5-the gap between the insulating inner wall tube 9 and the inner pole cable 11-the other end inner pole connecting component 5-the other end first water nozzle 1; and an electrical connection structure of the inner pole wiring ring 2-inner pole connecting component 5-inner pole cable 11-the other end inner pole connecting component 5-the other end inner pole wiring ring 2.

[0032] Furthermore, the outer pole cable wiring structure includes an outer pole wiring ring 7 and an outer pole connector 8, the outer pole wiring ring 7 is fixedly connected to the outside of the insulating tube 4, preferably, the insulating tube 4 between the inner pole wiring ring 2 and the outer pole wiring ring 7 extends outwardly with a flange structure to separate the two, the outer pole wiring ring 7 is also provided with a flange, and the two flanges are fixed by fixing bolts 3, the end of the outer pole wiring ring 7 is sleeved with one end of the outer pole transmission layer 12, and a fixing ring 10 is provided at the sleeve connection to clamp the outer pole transmission layer 12 on the outer pole wiring ring 7, the fixing ring 10 is preferably made of metal, and during production, a metal strip is wrapped around the overlapping part of the outer pole wiring ring 7 and the outer pole transmission layer 12 for at least one circle and tightened inward, and a ring structure is formed by welding; the outer pole connector 8 is The end is fixedly connected to the outer pole wiring ring 7, and the inner thread of the outer pole connecting member 8 is preferably matched with the outer thread of the outer pole wiring ring 7. A waterproof belt is preferably arranged between the two threads, and a gap is formed between the other end and the outer pole wiring ring 7. One side of the outer pole connecting member 8 is connected to the second water nozzle 6, and the outer wall of the outer pole connecting member 8 is sleeved and interference fits one end of the insulating outer wall tube 13. Preferably, the outer wall of the outer pole connecting member 8 is provided with a pagoda pattern that matches the insulating outer wall tube 13, which plays a fixing role on the one hand and a water leakage prevention role on the other hand; so that the outer pole forms a water path of the second water nozzle 6-the gap between the insulating inner wall tube 9 and the insulating outer wall tube 13-the second water nozzle 6 at the other end; and the electrical connection structure of the outer pole wiring ring 7-the outer pole power transmission layer 12-the outer pole wiring ring 7 at the other end.

[0033] In detail, the inner pole connecting ring 2, the inner pole connecting piece 5, the outer pole connecting ring 7, the outer pole connecting piece 8, and the insulating tube 4 should be made of hard materials to ensure connection capability, among which the inner pole connecting ring 2, the inner pole connecting piece 5, the outer pole connecting ring 7, and the outer pole connecting piece 8 are preferably made of copper, and the insulating tube 4 is preferably made of polytetrafluoroethylene.

[0034] The inner pole connection ring 2 and the outer pole connection ring 7 are preferably cylindrical structures, and the connection seat for connection is preferably as follows Figure 6 As shown in Figure 6 .1 is a terminal block for cooperating with the outer terminal ring 7; wherein Figure 6 .2 is a terminal block for cooperating with the inner pole terminal ring 2. The terminal block is composed of two upper and lower U-shaped components, which can be fixed by bolts. At least one of the two pieces is made of conductive material, preferably copper, and is welded with a copper plate, which is connected to the power transmission end of the high-frequency induction device. Both the terminal block and the copper plate can be provided with cavities and connected to independent water channels. The difference between the two terminal blocks is only the size of the middle slot, which is used to cooperate with the outer pole terminal ring 7 and the inner pole terminal ring 2 respectively.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A high frequency power transmission cable, characterized in that: It comprises an inner pole cable (11), the two ends of the inner pole cable (11) are respectively fixedly connected to the inner pole cable wiring structure, the inner pole cable (11) is externally coated with an insulating inner wall tube (9), the insulating inner wall tube (9) is externally coated with an outer pole power transmission layer (12), the two ends of the outer pole power transmission layer (12) are respectively fixedly connected to the outer pole cable wiring structure, and the outer pole power transmission layer (12) is externally coated with an insulating outer wall tube (13); the inner pole cable wiring structure and the outer pole cable wiring structure are separated by an insulating tube (4); The inner pole cable connection structures at both ends are respectively connected to the first water nozzles (1), the gap between the inner pole cable (11) and the insulating inner wall tube (9) forms a first water path, and the first water path connects the first water nozzles (1) at both ends; The outer pole cable connection structures at both ends are respectively connected to the second water nozzles (6); the gap between the insulating inner wall tube (9) and the insulating outer wall tube (13) forms a second water path; the second water path is connected to the second water nozzles (6) at both ends; The inner pole cable connection structure comprises an inner pole connection ring (2) and an inner pole connector (5), the inner pole connector (5) being tubular, one end of the inner pole connector (5) passing through the inner body of the insulating tube (4) and the inner pole connection ring (2) in sequence, and connected to the first water nozzle (1); the other end of the inner pole connector (5) is fixedly connected to the end of the inner pole cable (11), the outer wall of the inner pole connector (5) is sleeved and interference-fitted with one end of the insulating inner wall tube (9), and the inner pole connector (5) located in the insulating inner wall tube (9) opens to the side to form a water inlet and outlet; The outer pole cable connection structure comprises an outer pole connection ring (7) and an outer pole connector (8); the outer pole connection ring (7) is fixedly connected to the outside of the insulating tube (4); the end of the outer pole connection ring (7) is sleeved with one end of the outer pole power transmission layer (12); a fixing ring (10) is provided at the sleeve connection to clamp the outer pole power transmission layer (12) onto the outer pole connection ring (7); one end of the outer pole connector (8) is fixedly connected to the outer pole connection ring (7); a gap is formed between the other end and the outer pole connection ring (7); one side of the outer pole connector (8) is connected to the second water nozzle (6); and the outer wall of the outer pole connector (8) is sleeved and interference-fitted with one end of the insulating outer wall tube (13).

2. A high-frequency power transmission cable as claimed in claim 1, characterized in that: The inner pole cable (11), the outer pole power transmission layer (12), the inner pole wiring ring (2), the inner pole connecting piece (5), the outer pole wiring ring (7), and the outer pole connecting piece (8) are made of red copper.

3. A high-frequency power transmission cable as claimed in claim 2, characterized in that: The outer pole power transmission layer (12) is a copper mesh.

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