High heat flow resistant cable

Abstract

The utility model discloses a kind of high heat flow cable, comprising: multiple groups of core wire pair-twisted groups, cable protection and outer covering, each group of core wire pair-twisted group includes inner shielding layer and two pair-twisted core wires, inner shielding layer is covered in the outside of two pair-twisted core wires, wherein, each core wire includes core wire conductor and core wire insulating layer covered in the surface of core wire conductor;Cable protection is covered outside multiple groups of core wire pair-twisted group;Outer covering is covered outside cable protection;Core wire insulating layer is ETFE insulating layer;Outer covering is black crosslinking polyethylene outer covering.Cable protection is covered outside multiple groups of core wire pair-twisted group;Outer covering is covered outside cable protection;Core wire insulating layer is ETFE insulating layer;Outer covering is black crosslinking polyethylene outer covering.By the pair-twisted structure cooperation of core wire pair-twisted group and inner shielding layer, so as to be able to insulate external electromagnetic interference, ensure the stability when signal transmission;While core wire insulating layer uses ETFE insulating layer, ensure that the insulation performance of cable is stable under high temperature environment, not easy to soften or break, cooperate black crosslinking polyethylene outer covering, so as to not only ensure that cable can withstand high heat flow, can also provide more comprehensive protection for cable.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a high heat flux resistant cable. Background Technology

[0002] Cables are the core carriers of signal and electrical energy transmission, playing a crucial role in the performance of corresponding equipment. This is especially true for high-requirement devices such as medical equipment, where cable performance directly impacts the equipment's performance and lifespan. Take X-ray computed tomography (CT) machines as an example. CT machines occupy a vital position in modern medical diagnosis. Their working principle involves scanning specific layers of the human body with X-rays. A detector receives the X-rays passing through the body and converts them into electrical signals. These signals are then converted into digital data by a data acquisition system, and finally, a computer reconstructs images of the internal structures of the human body. In this process, the data acquisition system requires stable and reliable cables to transmit signals and electrical energy.

[0003] However, traditional cables used in CT scan data acquisition systems have many problems. On the one hand, during operation, the X-ray tube of a CT scanner generates a large amount of heat, especially under high-power operation or prolonged continuous operation. The ambient temperature rises sharply, and the insulation performance of ordinary cables deteriorates significantly under high temperatures, easily leading to safety hazards such as leakage and short circuits. This seriously affects the normal operation of the CT scanner and may even damage the equipment. On the other hand, data acquisition systems have high requirements for the accuracy and stability of signal transmission. Ordinary cables, under high temperatures, will affect the signal transmission quality, causing signal distortion and interference, resulting in a decrease in the quality of the reconstructed images.

[0004] In view of the above, a high heat flux resistant cable suitable for CT machine data acquisition system is proposed, which not only enables the cable to withstand high heat flux, but also ensures stable signal transmission. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-heat-current resistant cable suitable for CT machine data acquisition systems, thereby enabling the cable to withstand high heat current and ensuring stable signal transmission.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A high heat flux resistant cable includes: multiple sets of twisted pair cores, a cabling protection component, and an outer sheath. Each set of twisted pair cores includes an inner shielding layer and two twisted cores. The inner shielding layer covers the two twisted cores. Each core includes a conductor and an insulation layer covering the surface of the conductor. The cabling protection component covers the multiple sets of twisted pair cores. The outer sheath covers the cabling protection component. The insulation layer is ETFE insulation. The outer sheath is a black cross-linked polyethylene outer sheath.

[0008] In one embodiment, the core conductor comprises seven annealed tin-plated soft copper wires, which are stranded together to form a stranded structure.

[0009] In one embodiment, the diameter of the annealed tin-plated soft copper wire is 0.2 mm.

[0010] In one embodiment, the stranding pitch of the stranded structure is 25 times the conductor diameter.

[0011] In one embodiment, the ETFE insulating layer is a cross-linked ETFE insulating layer that has undergone a high-energy ray irradiation cross-linking process.

[0012] In one embodiment, the cabling protection component includes a first ground wire, an inner insulating tape, a second ground wire, an outer insulating tape, and an outer shielding layer. The first ground wire is untwisted and cabled with multiple sets of core wire twisted pairs. The inner insulating tape covers the outside of the first ground wire and the multiple sets of core wire twisted pairs in the cabling. The outer insulating tape covers the outside of the inner insulating tape. The outer shielding layer covers the side of the outer insulating tape away from the inner insulating tape, and the second ground wire is located between the outer insulating tape and the outer shielding layer.

[0013] In one embodiment, both the inner insulating tape and the outer insulating tape are polyester tapes.

[0014] In one embodiment, the outer shielding layer is Mylar aluminum foil.

[0015] In one embodiment, the inner shielding layer is Mylar aluminum foil.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] 1. This utility model's high heat flux resistant cable utilizes multiple sets of twisted-pair core wires, specifically by twisting two core wires together to form a twisted-pair structure. Combined with an inner shielding layer, this effectively isolates external electromagnetic interference, ensuring signal transmission stability and achieving high-precision signal transmission. Simultaneously, the core wire insulation layer uses ETFE insulation, which possesses extremely high mechanical strength and hardness, as well as excellent high-temperature resistance, ensuring stable insulation performance of the cable in high-temperature environments, preventing softening or damage. Furthermore, it is combined with a black cross-linked polyethylene outer sheath that is flame-retardant, oil-resistant, acid-resistant, abrasion-resistant, and light-resistant. This not only ensures the cable can withstand high heat flux but also provides more comprehensive protection, extending its service life. Thus, the twisted-pair core wire structure, combined with the ETFE insulation layer and the black cross-linked polyethylene outer sheath, ensures the cable's reliability in the high heat flux environment of a CT scanner.

[0018] 2. The high heat flux resistant cable of this utility model improves the flexibility and bending life of the cable by using multiple fine strands twisted together as conductors.

[0019] 3. The high heat flux resistant cable of this utility model adopts an inner shielding layer wrapped separately for each pair of core wires and adds an outer shielding layer after cabling, thus forming a double shielding protection. At the same time, in conjunction with the twisted pair structure of the core wires, it can effectively suppress internal crosstalk and external electromagnetic interference, and improve the stability and accuracy of signal transmission. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0021] Figure 1 This is a schematic diagram of the high heat flux resistant cable in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the core wire twisted pair assembly in a high heat flux resistant cable;

[0023] Figure 3 for Figure 1 A schematic diagram of the cable protection component for high heat flux resistant cables; Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0025] Please see Figure 1 Figure 2 and Figure 3As shown, a high heat flux resistant cable 10 includes: multiple sets of twisted pair cores 100, a cabling protection component 200, and an outer sheath 300. Each set of twisted pair cores 100 includes an inner shielding layer 110 and two twisted cores 120. The inner shielding layer 110 covers the two twisted cores 120. Each core includes a core conductor 121 and a core insulation layer 122 covering the surface of the core conductor 121. The cabling protection component 200 covers the multiple sets of twisted pair cores 100. The outer sheath 300 covers the cabling protection component 200. The core insulation layer 122 is an ETFE insulation layer. The outer sheath 300 is a black cross-linked polyethylene outer sheath 300.

[0026] It should be noted that the twisted pair assembly 100 utilizes the twisted structure to suppress common-mode interference and, combined with the inner shielding layer 110, achieves primary electromagnetic shielding, ensuring the stability of signal transmission. Simultaneously, the core wire insulation layer 122 uses ETFE (ethylene-tetrafluoroethylene copolymer) insulation, leveraging its inherent high heat resistance and excellent mechanical strength to ensure stable electrical and mechanical properties of the cable at high temperatures, as well as stable insulation performance under high-temperature environments, preventing softening or damage. Combined with a black cross-linked polyethylene outer sheath 300 that is flame-retardant, oil-resistant, acid-resistant, abrasion-resistant, and light-resistant, this not only ensures the cable can withstand high heat flux but also provides more comprehensive protection, extending its service life. Thus, the twisted structure formed by the core wire twisted pair assembly 100, combined with the inner shielding layer 110, the high-temperature resistant ETFE insulation layer, and the black cross-linked polyethylene outer sheath 300, solves the problems of signal distortion, insulation aging, and physical damage that traditional cables are prone to in the high heat flux and high interference environments of CT scanners. It should also be noted that the black cross-linked polyethylene outer sheath 300 is irradiated and cross-linked, which significantly improves the various mechanical properties of the cable and provides comprehensive external protection, ensuring normal operation even in harsh environments. In this embodiment, the inner shielding layer 110 is Mylar aluminum foil, that is, every two core conductors 121 are twisted together using a 600 twisted pair and wrapped with Mylar aluminum foil, thereby increasing the stability of signal transmission and shielding against external interference. Alternatively, the inner shielding layer 110 can also be made of copper foil or tin-plated copper foil.

[0027] Furthermore, the ETFE insulation layer is a cross-linked ETFE insulation layer treated with high-energy ray irradiation cross-linking technology. Irradiation cross-linking is a polymer modification technology that uses high-energy rays to cross-link the molecular chains of ETFE, forming a three-dimensional network structure. This significantly improves the heat resistance and mechanical strength of the ETFE insulation layer, thereby enhancing the cable's ability to withstand high heat flux and ensuring the stability of cable signal transmission.

[0028] In one embodiment, the core conductor 121 comprises seven annealed tin-plated soft copper wires, which are stranded together to form a stranded structure. This multi-wire stranded structure aims to increase the conductor's flexibility and resistance to bending fatigue. Annealed tin-plated soft copper wires are used because annealing reduces the hardness of the copper wire. Furthermore, the tin plating layer on the tin-plated soft copper wire improves the conductor's oxidation resistance. In this embodiment, the diameter of the annealed tin-plated soft copper wire is preferably 0.2 mm. However, processing deviations are permissible during actual manufacturing. This diameter specification is a preferred embodiment for a specific conductor specification (such as 24AWG; AWG is an internationally widely used conductor specification standard system, and 24AWG is a standardized designation indicating the conductor's diameter or cross-sectional area. 24AWG is preferred based on the electrical requirements and operating current of a CT scanner data acquisition system, and 24AWG conductors can maintain cable flexibility and compactness while ensuring sufficient current transmission capacity and low signal attenuation). A diameter of 0.2 mm ensures that the conductor has sufficient current-carrying capacity and mechanical strength while achieving optimal stranding effect and cable flexibility. Furthermore, in this embodiment, the stranding pitch of the stranding structure is 25 times the conductor diameter. This optimizes the stranding pitch, reduces internal stress in the conductor, improves the cable's stability in high-temperature environments, reduces the risk of wire breakage, and enhances the anti-interference capability of the core wires to the strand group 100, reducing interference during signal transmission.

[0029] In one embodiment, the cabling protection component 200 includes a first ground wire 210, an inner insulating tape 220, a second ground wire 230, an outer insulating tape 240, and an outer shielding layer 250. The first ground wire 210 is untwisted and cabled with multiple sets of core wire twisted pairs 100. The inner insulating tape 220 covers the outside of the first ground wire 210 and the multiple sets of core wire twisted pairs 100. The outer insulating tape 240 covers the outside of the inner insulating tape 220. The outer shielding layer 250 covers the side of the outer insulating tape 240 away from the inner insulating tape 220. The second ground wire 230 is located between the outer insulating tape 240 and the outer shielding layer 250.

[0030] It should be noted that the first ground wire 210 and the core wire twisted pair 100 are untwisted together to form a cable, forming a preliminary grounding circuit. In this embodiment, the core wire twisted pair 100 is provided in three sets. The three sets of core wire twisted pair 100 plus the first ground wire 210 can be untwisted into a cable using a 630 single twister, and then wrapped with insulating tape. The inner insulating tape 220, the second ground wire 230, the outer insulating tape 240 and the outer shielding layer 250 are wrapped together, which can make the semi-finished product more round. The inner insulating tape 220 covers the cable structure, fixes the position of the core wire and provides insulation isolation. The second ground wire 230 is located between the outer insulating tape 240 and the outer shielding layer 250, which can effectively conduct away the electromagnetic interference signals captured by the outer shielding layer 250. The double grounding formed by the first ground wire and the second ground wire can improve the anti-interference capability. The outer insulating tape 240 further fixes the structure and enhances the protection. Thus, the double ground wire enhances the cable's anti-interference capability and ensures the stability of signal transmission. Simultaneously, the double-layer insulation tape structure improves the structural stability of the cable after cabling, enhancing not only its insulation performance but also the reliability of mechanical protection. In this embodiment, both the inner insulation tape 220 and the outer insulation tape 240 are polyester tapes. Polyester tapes possess high-temperature resistance, excellent insulation performance, and mechanical strength, maintaining structural stability under high heat flux environments and preventing insulation tape aging and failure. In another embodiment, the inner insulation tape 220 and the outer insulation tape 240 can also be made of polytetrafluoroethylene (PTFE) tape or polyimide tape, etc. Furthermore, the double-layer insulation tape can tightly wrap the cabling structure, making the cable more compact and resulting in a smaller wire diameter. Furthermore, the outer shielding layer 250 and the inner shielding layer 110 form a double shielding effect, which can significantly improve the anti-interference performance of the cable, effectively isolate internal and external electromagnetic interference, and ensure high-precision signal transmission. Further, preferably, the outer shielding layer 250 is Mylar aluminum foil. The high conductivity of Mylar aluminum foil ensures that the outer shielding layer 250 has excellent shielding performance and effectively blocks external electromagnetic interference. At the same time, the high temperature resistance of the Mylar substrate (usually polyester film) can ensure that the shielding layer remains stable in a high heat flux environment. In addition, the thin structure design does not significantly increase the cable diameter, and can maintain the compactness and flexibility of the cable. In this way, while meeting the wire thickness requirements, the weight of the wire can be reduced, the overall wire diameter is small, and it is convenient to process extremely small terminals. In another embodiment, the outer shielding layer 250 can also be copper foil or tin-plated copper foil, etc.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high heat flux resistant cable, characterized in that, include: Multiple sets of core wire twisted pairs, each set of core wire twisted pairs includes an inner shielding layer and two twisted core wires, the inner shielding layer covers the two twisted core wires, wherein each core wire includes a core wire conductor and a core wire insulation layer covering the surface of the core wire conductor; Cable protection component, the cable protection component covering the multiple sets of core wire twisted pairs; and An outer sheath layer, which covers the cable protection component; The insulation layer of the core wire is an ETFE insulation layer; The outer sheath is a black cross-linked polyethylene outer sheath.

2. The high heat flux resistant cable according to claim 1, characterized in that, The core conductor comprises seven annealed tin-plated soft copper wires, which are twisted together to form a stranded structure.

3. The high heat flux resistant cable according to claim 2, characterized in that, The diameter of the annealed tin-plated soft copper wire is 0.2 mm.

4. The high heat flux resistant cable according to claim 3, characterized in that, The stranding pitch of the stranded structure is 25 times the conductor diameter.

5. The high heat flux resistant cable according to claim 1, characterized in that, The ETFE insulation layer is a cross-linked ETFE insulation layer that has undergone a high-energy ray irradiation cross-linking process.

6. The high heat flux resistant cable according to claim 1, characterized in that, The cabling protection component includes a first ground wire, an inner insulating tape, a second ground wire, an outer insulating tape, and an outer shielding layer. The first ground wire is untwisted and cabled with multiple sets of core wire twisted pairs. The inner insulating tape covers the outside of the first ground wire and the multiple sets of core wire twisted pairs in the cabling. The outer insulating tape covers the outside of the inner insulating tape. The outer shielding layer covers the side of the outer insulating tape away from the inner insulating tape, and the second ground wire is located between the outer insulating tape and the outer shielding layer.

7. The high heat flux resistant cable according to claim 6, characterized in that, Both the inner insulating tape and the outer insulating tape are polyester tapes.

8. The high heat flux resistant cable according to claim 7, characterized in that, The outer shielding layer is Mylar aluminum foil.

9. The high heat flux resistant cable according to any one of claims 1-8, characterized in that, The inner shielding layer is Mylar aluminum foil.

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