Weather-resistant and extrusion-resistant crosslinked polyvinyl chloride insulated electric wire
By introducing anti-extrusion components into cross-linked polyethylene insulated wires and using components such as arc-shaped springs and rubber buffer sleeves to buffer the extrusion pressure in layers, the problem of internal structural displacement of the wire during extrusion is solved, achieving accurate wire repositioning and improving the resilience of the protective layer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XINCHANG YUANHUA WIRE HARNESS CO LTD
- Filing Date
- 2026-04-23
- Publication Date
- 2026-06-09
AI Technical Summary
When existing cross-linked polyethylene insulated wires are compressed, their internal structure is prone to displacement, leading to a decrease in insulation performance and affecting the quality of power transmission.
It adopts an anti-compression component design, including components such as arc-shaped springs, clips, elastic sheets and rubber buffer sleeves. Through layered buffering and elastic reset, it improves the wire's resistance to compression and reset effect.
It effectively buffers the compressive force, ensuring that the wire core and protective layer can accurately return to their original position after compression, avoiding structural damage and improving power transmission and protection.
Smart Images
Figure CN122177566A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cross-linked polyvinyl chloride (CPVC) insulated wire technology, and particularly to a weather-resistant and compression-resistant CPVC insulated wire. Background Technology
[0002] Cross-linked polyethylene (XLPE) insulated wires are a type of power wire that uses XLPE as its insulation material. They have advantages such as high temperature resistance, high current carrying capacity, high mechanical strength, and resistance to chemical corrosion. They are widely used in power transmission systems in urban power grids, industrial equipment, mines, and construction. This type of wire transforms the linear polyethylene molecular structure into a three-dimensional network structure through physical or chemical methods, changing it from thermoplastic to thermosetting. As a result, it does not melt at high temperatures, and its long-term operating temperature can reach 90℃. It can withstand short-term overloads of up to 250℃.
[0003] Electrical wires are susceptible to deformation due to external compression during use. While the protective layer of existing wires can provide some resistance to compression, the internal structure of the wire will shift when it is compressed and deformed. After the compression is released, the internal structure is prone to deviation during its reset, which can damage the internal structure of the wire, affect the insulation performance of the insulation layer, and affect the power transmission quality of the wire core. To address these issues, designing a weather-resistant and compression-resistant cross-linked polyvinyl chloride insulated wire has become a problem that we need to solve. Summary of the Invention
[0004] To address the existing technical problems, this invention provides a weather-resistant and compression-resistant cross-linked polyvinyl chloride insulated wire.
[0005] The technical solutions provided by the embodiments of the present invention are as follows: This invention provides a weather-resistant and compression-resistant cross-linked polyvinyl chloride insulated wire, comprising: a protective sheath, a core, and a compression-resistant component; The number of cores is set to multiple, and the multiple cores are distributed in a circumferentially equidistant array inside the protective sleeve. The anti-compression component is set between the multiple cores and inside the protective sleeve. The protective case includes an outer sheath, armor, inner sheath, and padding.
[0006] Optionally, the armor is set on the inner wall of the outer sheath, the inner sheath is set on the inner wall of the armor, and the number of fillers is set to multiple, with the multiple fillers distributed in a circumferentially equidistant array on the inner wall of the inner sheath, and every two adjacent fillers are set on the outer wall of a core.
[0007] Optionally, the core includes an insulating shielding layer, an insulating layer, a wire shielding layer, and a wire. The wire shielding layer covers the outer wall of the wire, the insulating layer covers the outer wall of the wire shielding layer, and the insulating shielding layer covers the outer wall of the insulating layer. The core contacts the filler of the protective sleeve through the insulating shielding layer.
[0008] Optionally, the anti-compression component includes an arc-shaped spring, and the number of arc-shaped springs is set to multiple. The multiple arc-shaped springs are respectively sleeved on the outer wall of the insulating shielding layer of the core. Two clips are fixedly installed on the side of each arc-shaped spring near the insulating shielding layer of the core.
[0009] Optionally, two clips abut against the outer wall of the corresponding core insulating shielding layer, and a deformation cavity is formed between the arc-shaped spring and the clips, which provides space for the deformation of the clips.
[0010] Optionally, two weakening grooves are provided on the side of the multiple arc-shaped springs away from the card, and a first weakening section is fixedly connected to the ends of every two adjacent arc-shaped springs.
[0011] Optionally, an elastic sheet is fixedly connected between every two adjacent arc-shaped elastic sheets, and a second weakening section is provided on the outer wall of the elastic sheet.
[0012] Optionally, the anti-compression component also includes a reinforcing core, the outer wall of which is fitted with a rubber buffer sleeve, and both the reinforcing core and the rubber buffer sleeve are inserted between multiple arc-shaped spring pieces.
[0013] Optionally, multiple rubber buffer rings are fixedly installed on the outer wall of the rubber buffer sleeve, and the multiple rubber buffer rings are set at equal intervals.
[0014] Optionally, the rubber buffer ring is inserted between multiple arc-shaped spring sheets, and the rubber buffer ring abuts against the side of the elastic sheet and the second weakened section near the reinforcing core.
[0015] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this invention, the deformation guide of the anti-extrusion component is used to buffer the extrusion force in layers and by force distribution, and to improve the elastic recovery force of the wire. This replaces the method of using a structurally rigid anti-extrusion buffer in the prior art, thereby improving the anti-extrusion effect and the recovery effect after extrusion. It avoids the wire from deforming after being extruded, and the wire core and protective layer cannot be restored, which would affect the power transmission effect of the wire and the protective effect of the protective layer. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a weather-resistant and compression-resistant cross-linked polyvinyl chloride insulated wire provided in an embodiment of the present invention.
[0018] Figure 2 This is a schematic diagram of the structure of a weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire from another perspective, as provided in an embodiment of the present invention.
[0019] Figure 3 This is a schematic diagram of the anti-extrusion component structure of a weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire provided in an embodiment of the present invention.
[0020] Figure 4 This is a cross-sectional view of the extrusion-resistant component structure of a weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire provided in an embodiment of the present invention.
[0021] Figure 5 This invention provides a weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire. Figure 4 Enlarged view of the structure of part A.
[0022] Reference numerals: 1. Outer sheath; 2. Armor; 3. Inner sheath; 4. Filler; 5. Insulating shielding layer; 6. Insulating layer; 7. Wire shielding layer; 8. Wire; 9. Arc-shaped spring; 10. Clip; 11. Deformation cavity; 12. Weakening groove; 13. First weakening section; 14. Elastic piece; 15. Second weakening section; 16. Reinforcing core; 17. Rubber buffer sleeve; 18. Rubber buffer ring.
[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation
[0024] The technical solutions of the present invention will now be described with reference to the accompanying drawings. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.
[0025] like Figures 1 to 5 As shown, an embodiment of the present invention provides a weather-resistant and compression-resistant cross-linked polyvinyl chloride insulated wire, comprising: a protective sheath, a core, and a compression-resistant component; The number of cores is set to multiple, and the multiple cores are distributed in a circumferentially equidistant array inside the protective sleeve. The anti-compression component is disposed between the multiple cores and inside the protective sleeve. In one possible implementation, the protective sleeve includes an outer sheath 1, an armor 2, an inner sheath 3, and fillers 4. The armor 2 is disposed on the inner wall of the outer sheath 1, the inner sheath 3 is disposed on the inner wall of the armor 2, and the number of fillers 4 is set to multiple. The multiple fillers 4 are distributed in a circumferentially equidistant array on the inner wall of the inner sheath 3, and every two adjacent fillers 4 are disposed on the outer wall of a core. It should be noted that the protective sleeve is used to protect the core and the anti-compression component, preventing external factors from affecting the service life of the core and the anti-compression component; Among them, the outer sheath 1 is a polyethylene protective layer, which has functions such as waterproof, moisture-proof, UV-resistant and corrosion-resistant, improving the weather resistance of the wire and making the wire suitable for outdoor or special environment laying. Among them, armor 2 is metal armor, which has the effect of resisting external forces such as squeezing, impact, stretching and crushing, and prevents the wire from being squeezed and deformed during laying and use.
[0026] In one possible implementation, the core includes an insulating shielding layer 5, an insulating layer 6, a wire shielding layer 7, and a wire 8. The wire shielding layer 7 covers the outer wall of the wire 8, the insulating layer 6 covers the outer wall of the wire shielding layer 7, and the insulating shielding layer 5 covers the outer wall of the insulating layer 6. The core contacts the filler 4 of the protective sleeve through the insulating shielding layer 5. It should be noted that the core is a power transmission component used to transmit power; Among them, the insulating shielding layer 5 is used to shield the insulating layer 6, and the conductor shielding layer 7 is used to shield the conductor 8, so as to achieve uniform electric field distribution and reduce partial discharge and electromagnetic interference.
[0027] In one possible implementation, the anti-compression component includes multiple arc-shaped spring pieces 9. These multiple arc-shaped spring pieces 9 are respectively sleeved on the outer wall of the insulating shielding layer 5 of the core. Two clips 10 are fixedly installed on the side of each arc-shaped spring piece 9 closest to the insulating shielding layer 5 of the core. The two clips 10 abut against the corresponding outer wall of the insulating shielding layer 5 of the core. A deformation cavity 11 is formed between the arc-shaped spring piece 9 and the clips 10, providing space for the deformation of the clips 10. Two weakening grooves 12 are formed on the side of each of the multiple arc-shaped spring pieces 9 away from the clips 10. A first [missing information - likely a type of groove] is fixedly connected to the ends of every two adjacent arc-shaped spring pieces 9. A weakening section 13 is provided, and an elastic sheet 14 is fixedly connected between every two adjacent arc-shaped elastic sheets 9. The outer wall of the elastic sheet 14 is provided with a second weakening section 15. The anti-compression component also includes a reinforcing core 16. A rubber buffer sleeve 17 is sleeved on the outer wall of the reinforcing core 16. The reinforcing core 16 and the rubber buffer sleeve 17 are both inserted between multiple arc-shaped elastic sheets 9. Multiple rubber buffer rings 18 are fixedly installed on the outer wall of the rubber buffer sleeve 17. The multiple rubber buffer rings 18 are arranged at equal intervals. The rubber buffer rings 18 are inserted between multiple arc-shaped elastic sheets 9, and the rubber buffer rings 18 abut against the side of the elastic sheet 14 and the second weakening section 15 near the reinforcing core 16. It should be noted that the anti-compression component is used to buffer and eliminate the compression on the wire, and after the compression is removed, it drives the core inside the wire to reset, so as to avoid errors in the core when the core is reset due to compression, which could damage the core structure and affect the transmission of electricity. In addition, the core can be clamped on the anti-compression component during the production and processing of the wire, so as to prevent the core from shifting when the filler 4 is filled into the wire, which would affect the quality of the wire after processing and forming. The arc-shaped spring 9 and the clip 10 can limit and fix the core, ensuring that the core will not be displaced during the filling of the wire with the filler 4. After the wire is squeezed, the arc-shaped spring 9 and the clip 10 can drive the core that is limited and fixed to reset, avoiding errors in reset, damage to the core structure, and affecting power transmission. The deformation cavity 11, the weakening groove 12, and the second weakening section 15 can be configured to determine the position and direction of the deformation of the anti-extrusion component when it deforms against the extrusion pressure buffer. Specifically, after the wire is squeezed, the squeezing force can be transmitted to the anti-squeezing component through the protective sleeve. The anti-squeezing component can initially buffer the squeezing force through deformation. After the anti-squeezing component is squeezed and deformed, the squeezing force is directed to different directions through the elastic sheet 14, the second weakening section 15 and the rubber buffer ring 18. The other parts and directions of the anti-squeezing component that are not squeezed buffer the squeezing force. The anti-squeezing component as a whole buffers and eliminates the squeezing force, reducing the local squeezing force intensity and thus reducing the damage caused by the squeezing force. Furthermore, after the anti-compression component is no longer compressed, the arc-shaped spring sheet 9, weakening groove 12, first weakening section 13, elastic sheet 14 and second weakening section 15 of the anti-compression component all begin to elastically reset, so that the anti-compression component continuously applies reset pressure to the core and protective layer, driving the core to reset, driving the protective layer to recover, improving the resilience of the protective layer, and avoiding local depression of the protective layer, which would affect the protective effect on the core.
[0028] In summary, the weather-resistant and compression-resistant cross-linked polyvinyl chloride insulated wire designed in this invention can buffer and eliminate the compression force on the wire in batches and in parts, thereby improving the wire's compression resistance. Furthermore, after the compression force disappears, the core can be reset through elastic reset, avoiding errors in core reset that could affect power transmission. The elastic reset also restores the protective layer, improving its resilience and preventing localized depressions in the protective layer that could affect the protection of the core.
[0029] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this invention, the deformation guide of the anti-extrusion component is used to buffer the extrusion force in layers and by force distribution, and to improve the elastic recovery force of the wire. This replaces the method of using a structurally rigid anti-extrusion buffer in the prior art, thereby improving the anti-extrusion effect and the recovery effect after extrusion. It avoids the wire from deforming after being extruded, and the wire core and protective layer cannot be restored, which would affect the power transmission effect of the wire and the protective effect of the protective layer.
[0030] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A weather-resistant, crush-resistant, crosslinked polyvinyl chloride insulated electric wire, characterized by, include: Protective sleeve, core, and anti-crush components; The number of cores is set to multiple, and the multiple cores are distributed in a circumferentially equidistant array inside the protective sleeve. The anti-compression component is disposed between the multiple cores and inside the protective sleeve. The protective sleeve includes an outer sheath, armor, an inner sheath, and filler.
2. The weather-resistant, crush-resistant, crosslinked polyvinyl chloride insulated electric wire according to claim 1, wherein, The armor is disposed on the inner wall of the outer sheath, and the inner sheath is disposed on the inner wall of the armor. The number of fillers is set to multiple, and the multiple fillers are distributed in a circumferentially equidistant array on the inner wall of the inner sheath. Every two adjacent fillers are disposed on the outer wall of a core.
3. The weatherable, crush-resistant, crosslinked polyvinyl chloride insulated electrical wire of claim 1, wherein, The core includes an insulating shielding layer, an insulating layer, a wire shielding layer, and a wire. The wire shielding layer covers the outer wall of the wire, the insulating layer covers the outer wall of the wire shielding layer, and the insulating shielding layer covers the outer wall of the insulating layer. The core is in contact with the filler of the protective sleeve through the insulating shielding layer.
4. The weatherable, crush-resistant, crosslinked polyvinyl chloride insulated electrical wire of claim 3, wherein, The anti-compression component includes an arc-shaped spring piece, and the number of the arc-shaped spring pieces is set to multiple. The multiple arc-shaped spring pieces are respectively sleeved on the outer wall of the insulating shielding layer of the core. Two clips are fixedly installed on the side of each arc-shaped spring piece near the insulating shielding layer of the core.
5. The weatherable, crush-resistant, crosslinked polyvinyl chloride insulated electrical wire of claim 4, wherein, The two clips abut against the outer wall of the corresponding core insulating shielding layer, and a deformation cavity is formed between the arc-shaped spring and the clips, which provides space for the deformation of the clips.
6. The weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire according to claim 4, characterized in that, Two weakening grooves are provided on the side of the multiple arc-shaped spring pieces away from the card, and a first weakening section is fixedly connected to the ends of every two adjacent arc-shaped spring pieces.
7. The weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire according to claim 4, characterized in that, An elastic sheet is fixedly connected between every two adjacent arc-shaped elastic sheets, and a second weakening section is provided on the outer wall of the elastic sheet.
8. The weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire according to claim 7, characterized in that, The anti-compression component also includes a reinforcing core, the outer wall of which is fitted with a rubber buffer sleeve, and both the reinforcing core and the rubber buffer sleeve are inserted between multiple arc-shaped spring pieces.
9. A weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire according to claim 8, characterized in that, Multiple rubber buffer rings are fixedly installed on the outer wall of the rubber buffer sleeve, and the multiple rubber buffer rings are arranged at equal intervals.
10. A weather-resistant and extrusion-resistant cross-linked polyvinyl chloride insulated wire according to claim 9, characterized in that, The rubber buffer ring is inserted between multiple arc-shaped spring pieces, and the rubber buffer ring abuts against the side of the elastic piece and the second weakened section near the reinforcing core.