Special drum for cable steam crosslinking
By designing cable steam crosslinking discs with cylinder, disk and support rod structures, the problem that steam can hardly evenly contact the inner insulated wire core is solved, and the uniform heating and crosslinking time of the insulated wire core are achieved.
Patent Information
- Application Number
- CN202422150188.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing crosslinking discs have fewer through-holes, which makes it difficult for steam to evenly contact the inner insulated wire core, resulting in long crosslinking time and poor effect.
A disk tool including a cylinder, a disk body and a support rod is designed. The cylinder body is equipped with a through hole and a through groove, the support rod is detachable, and a positioning hole is provided on the disk body. These structures separate the insulated wire cores, increase the steam contact area, and ensure uniform heating.
The uniform heating of the insulated wire core is achieved, the cross-linking time is shortened, and the cross-linking effect is improved.
Smart Images
Figure CN223078904U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cable production, and particularly relates to a special coil for steam cross-linking of cables. Background Art
[0002] The insulating cores of medium and low voltage cables need to be cross-linked to transform the polymer insulating material from a linear molecular structure into a three-dimensional network structure, from a thermoplastic material into a thermosetting insulating material, so as to improve the aging resistance, mechanical properties and environmental resistance of the insulating material. The current cross-linking methods are mainly warm water cross-linking and steam cross-linking.
[0003] Among them, steam cross-linking needs to be carried out in a steam cross-linking chamber. The traditional method is: first wind the insulating core onto the cross-linking coil, and then push it into the steam cross-linking chamber for cross-linking. However, most of the existing cross-linking coils use ordinary cable coils, and there are few through holes on the cable coils. The insulating cores are stacked layer by layer, and most of the steam can only contact the outer insulating cores and is difficult to penetrate inward. Therefore, the inner insulating cores can only contact a small part of the steam, and it is difficult to achieve uniform heating only by heat transfer, resulting in a long cross-linking time and poor cross-linking effect.
[0004] Therefore, there is an urgent need for a special coil for steam cross-linking of cables to solve the above problems. Summary of the Utility Model
[0005] In view of the above-mentioned defects existing in the prior art, the utility model provides a special coil for steam cross-linking of cables, which includes a cylinder body, two disk bodies and a plurality of support rods. A coaxial central shaft cylinder is arranged inside the cylinder body. The left and right ends of the central shaft cylinder are respectively fixedly connected with the inner wall of the cylinder body through a cross-shaped frame body. The two disk bodies are respectively fixedly installed outside the left and right ends of the cylinder body, and the two disk bodies face each other left and right. Six convex ribs are evenly distributed on the outer disk surface of the disk body, and the six convex ribs on the two disk bodies also face each other left and right. Four circular positioning holes are formed on each convex rib, and the four positioning holes are arranged at equal intervals. In addition, the four positioning holes on each convex rib of the two disk bodies also correspond to each other one by one left and right. A plurality of support rods are detachably arranged between the two disk bodies.
[0006] Optionally, a plurality of rectangular first through holes are formed on the outer wall of the cylinder body, and a plurality of fan-shaped second through holes are formed on the disk surface of the disk body.
[0007] Specifically, the first through holes facilitate the steam to dissipate outward from the cylinder body, so that the steam can contact the insulating core wound on the surface of the cylinder body, enabling this part of the insulating core to be heated evenly and improving the cross-linking effect; the second through holes facilitate the steam to contact the insulating core from the side, increasing the contact area between the steam and the insulating core, accelerating the cross-linking efficiency and shortening the cross-linking time.
[0008] Optionally, threads are provided at both the left and right ends of the support rod, and fixing nuts are threadedly connected to both ends of the support rod. The outer diameter of the fixing nut is larger than the diameter of the positioning hole.
[0009] Specifically, when installing the support rod, one end of the support rod can be first inserted into the positioning hole on one side. After the other end is inserted into the corresponding positioning hole on the other side, the outer end of the support rod is fixed with a fixing nut. In this way, the disassembly is convenient and the use is flexible.
[0010] Optionally, the coil for special steam cross-linking of cables is further provided with a wedge block. A limiting groove is provided on the top surface of the end with a lower position of the wedge block, and the width of the limiting groove matches the width of the outer edge surface of the coil body.
[0011] Specifically, the wedge block is used to fix the coil body to prevent the coil body from rolling, and the limiting groove further improves the limiting effect on the coil body.
[0012] The present utility model further includes other components that can enable a coil for special steam cross-linking of cables to be used normally, which are all conventional technical means in the art. In addition, the devices or components not defined in the present utility model all adopt the conventional technical means in the art.
[0013] The working principle of the present utility model is as follows: First, all the support rods are removed, and then a part of the insulated wire cores (from left to right) are wound around the outer wall of the cylinder as the innermost layer of insulated wire cores; then the outermost circle of support rods closest to the cylinder is installed, that is, the support rods are fixed by selecting the positioning holes closest to the position of the cylinder. The number of support rods installed can be three (the three points are connected to form an equilateral triangle), four (the four points are connected to form a square), or six (the six points are connected to form a regular hexagon), and try to ensure that the support rods are evenly symmetric to facilitate winding. Then, another layer of insulated wire cores (from right to left) is wound around this circle of support rods as the middle layer of insulated wire cores; then, another circle of support rods is installed at a position slightly farther away from the cylinder, and the last part of the insulated wire cores (from left to right) is wound around this circle of support rods as the outermost layer of insulated wire cores, so that the three layers of insulated wire cores can be separated; finally, the coil is pushed into the steam cross-linking chamber for cross-linking. The steam can not only contact the outermost layer of insulated wire cores, but also easily contact the other two layers of insulated wire cores through the first through holes and the second through holes, increasing the contact area, ensuring uniform heating, shortening the cross-linking time, and improving the cross-linking effect.
[0014] The beneficial effects of the present utility model are as follows: The structure is simple and the use is convenient. Compared with the traditional cross-linking coil, this coil uses the cylinder, the support rod and the coil body to separate each layer of insulated wire cores. At the same time, in combination with the first through holes and the second through holes, the steam can quickly contact each layer of insulated wire cores, not only increasing the contact area, but also ensuring uniform heating, thereby shortening the cross-linking time and improving the cross-linking effect. Description of the Drawings
[0015] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model.
[0017] Figure 2 It is a schematic diagram of the structure of the wedge block of the present utility model.
[0018] Figure 3 It is a schematic diagram of a spool dedicated to steam cross-linking of cables provided by the embodiment during actual use.
[0019] In the figure: 1. Cylinder body, 2. Disk body, 3. Support rod, 4. Central shaft cylinder, 5. Frame body, 6. Convex rib, 7. Positioning hole, 8. First through hole, 9. Second through hole, 10. Wedge block, 11. Limiting groove, 12. Innermost insulating wire core, 13. Intermediate insulating wire core, 14. Outermost insulating wire core. Specific embodiments
[0020] The present utility model will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present utility model and specific embodiments. The description here is only used to explain the present utility model, but not to limit the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present utility model.
[0021] Embodiment
[0022] As Figures 1 - 3As shown in the figure, an embodiment of the present utility model provides a spool specifically for steam cross-linking of cables, which includes a cylinder body 1, two spool bodies 2, and a plurality of support rods 3. A coaxial central shaft cylinder 4 is arranged inside the cylinder body 1, and the left and right ends of the central shaft cylinder 4 are respectively fixedly connected to the inner wall of the cylinder body 1 through a cross-shaped frame body 5; the two spool bodies 2 are respectively fixedly installed outside the left and right ends of the cylinder body 1, and the two spool bodies 2 face each other left and right. Six convex ridges 6 are evenly distributed on the outer disk surface of the spool body 2, and the six convex ridges 6 on the two spool bodies 2 also face each other left and right. Four circular positioning holes 7 are formed on each convex ridge 6, and the four positioning holes 7 are arranged at equal intervals. Similarly, the four positioning holes 7 on each convex ridge 6 of the two spool bodies 2 also correspond to each other left and right one by one; a plurality of support rods 3 are detachably arranged between the two spool bodies 2. Threads are provided at both the left and right ends of the support rod 3, and fixing nuts are threadedly connected to both ends of the support rod 3. The outer diameter of the fixing nut is larger than the diameter of the positioning hole 7. When installing the support rod 3, one end of the support rod 3 can be first inserted into the positioning hole 7 on one side, and after the other end is inserted into the corresponding positioning hole 7 on the other side, the outer end of the support rod 3 is fixed with a fixing nut. In this way, the disassembly is convenient and the use is flexible.
[0023] In addition, a plurality of rectangular first through holes 8 are formed on the outer wall of the cylinder body 1, and a plurality of fan-shaped second through holes 9 are formed on the disk surface of the spool body 2. The first through holes 8 facilitate the steam to dissipate out of the cylinder body 1, so that the steam can contact the insulating wire core wound on the surface of the cylinder body 1, enabling this part of the insulating wire core to be heated evenly and improving the cross-linking effect; the second through holes 9 facilitate the steam to contact the insulating wire core from the side, increasing the contact area between the steam and the insulating wire core, accelerating the cross-linking efficiency, and shortening the cross-linking time.
[0024] In addition, a wedge block 10 is also provided on the spool specifically for steam cross-linking of cables. A limiting groove 11 is arranged on the top surface of the end with a lower position of the wedge block 10, and the width of the limiting groove 11 matches the width of the outer edge surface of the spool body 2. The wedge block 10 is used to fix the spool body 2 to prevent the spool body 2 from rolling, and the limiting groove 11 further improves the limiting effect on the spool body 2.
[0025] The working principle of the present utility model is as follows: first, remove all the support rods 3, and then wind a part of the insulating wire cores (from left to right) around the outer wall of the cylinder body 1 as the innermost insulating wire cores 12; then install the first circle of support rods 3 closest to the cylinder body 1, that is, select the positioning holes 7 closest to the position of the cylinder body 1 to fix the support rods 3. The number of installed support rods 3 can be three (the three-point connection forms an equilateral triangle), four (the four-point connection forms a square), or six (the six-point connection forms a regular hexagon), and try to ensure that the support rods 3 are evenly symmetric to facilitate winding. Then wind another layer of insulating wire cores (from right to left) around this circle of support rods 3 as the middle insulating wire cores 13; then install another circle of support rods 3 at a position slightly farther away from the cylinder body 1, and wind the last part of the insulating wire cores (from left to right) around this circle of support rods 3 as the outermost insulating wire cores 14, so that the three layers of insulating wire cores can be separated; finally, push the coil into the steam cross-linking chamber for cross-linking. The steam can not only contact the outermost insulating wire cores 14, but also easily contact the other two layers of insulating wire cores through the first through holes 8 and the second through holes 9, increasing the contact area, ensuring uniform heating, shortening the cross-linking time, and improving the cross-linking effect.
[0026] The embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments.
Claims
1. A coil for special use in steam cross-linking of cables, comprising a cylinder body, two coil bodies and a plurality of support rods, characterized in that: A coaxial central shaft cylinder is arranged inside the cylinder body. The left and right ends of the central shaft cylinder are respectively fixedly connected to the inner wall of the cylinder body through cross-shaped frames. Two disc bodies are respectively fixedly installed outside the left and right ends of the cylinder body, and the two disc bodies face each other left and right. Six convex ribs are evenly distributed on the outer disc surface of the disc body. A number of circular positioning holes are opened on each convex rib, and the number of positioning holes are arranged at equal intervals. A number of support rods are detachably arranged between the two disc bodies.
2. The coil for special use in steam crosslinking of cables according to claim 1, wherein: A number of first through holes are opened on the outer wall of the cylinder body, and a number of second through holes are opened on the disc surface of the disc body.
3. The spool specifically for steam cross-linking of cables according to claim 2, wherein: Threads are provided at both the left and right ends of the support rod, and fixing nuts are threadedly connected to both ends of the support rod. The outer diameter of the fixing nut is larger than the diameter of the positioning hole.
4. The spool specifically for steam cross-linking of cables according to claim 3, characterized in that: A wedge block is also provided. A limiting groove is provided on the top surface of the lower end of the wedge block, and the width of the limiting groove matches the width of the outer edge surface of the disc body.