A process for the production of power cables

Abstract

The application discloses a kind of electric power cable production processes, belong to cable technical field, the scheme is buried in the bottom of cable in seabed, the contact area with sea is increased using turnover capture ring, reduce the displacement of cable in laying process, improve the protection effect to cable, using degradation cover decomposes so that seawater enters fragile glass tube and reacts with quicklime to generate a large amount of heat, and then the fragile glass tube is promptly broken, the repulsive force between magnetic blocks is used to cooperate with the restoring force of elastic reset net, so that the elastic reset net can be turned outward and fixed inside the limiting groove, the elastic reset net is wrapped around a large amount of silt and attached to the surface of the cable to protect the cable, reduce the damage of marine organisms to the cable, effectively isolate the attachment of marine parasites, protect the safety of the cable, and improve the buffering performance, reduce the damage of geological disasters to the cable, effectively improve the service life of the cable.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and more specifically, to a power cable manufacturing process. Background Technology

[0002] Power cables are cables used for transmitting and distributing electrical energy. They are commonly used in urban underground power grids, power plant lead-out lines, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas. The proportion of cables in power lines is gradually increasing. Power cables are cable products used in the main lines of power systems to transmit and distribute high-power electrical energy, including power cables of various voltage levels from 1-500KV and above, and various types of insulation.

[0003] With the acceleration of globalization, exchanges between countries have become increasingly close. To facilitate communication, a large number of submarine cables have been laid on the ocean floor to meet the needs of data transmission. Since submarine cables are buried in the harsh environment of the ocean floor, the damage caused by marine organisms to the cables cannot be ignored. For example, barnacles attach to the surface of the cables and cause corrosion, leading to cable damage and communication interruption, which seriously affects people's daily use.

[0004] Therefore, we propose a power cable manufacturing process to effectively solve some of the problems existing in the current technology. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the present invention aims to provide a power cable manufacturing process. By burying the cable at the bottom of the seabed, a flipping grasping ring is used to increase the contact area with the seabed, reducing cable displacement during laying and improving cable protection. The decomposition of the degradation sleeve allows seawater to enter the brittle glass tube and react with quicklime, generating a large amount of heat, which causes the brittle glass tube to shatter promptly. The repulsive force between magnetic blocks, combined with the restoring force of the elastic reset net, allows the elastic reset net to flip outward and be fixed inside the limiting groove. The elastic reset net, enveloping a large amount of silt, adheres to the cable surface, protecting the cable and reducing damage from marine organisms. It effectively isolates the attachment of marine parasites, protecting cable safety, improving buffering performance, reducing damage from geological disasters, and effectively extending the cable's service life.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A power cable manufacturing process includes a dielectric-grabbing protective sleeve. The protective sleeve has a pre-drilled groove on its exterior, and a flip-grabbing ring inside the groove. The flip-grabbing ring includes an outer degradation sleeve. Magnetic blocks are connected to the upper and lower inner walls of the degradation sleeve via elastic reset mesh. The magnetic blocks are connected by a brittle glass tube, with opposite sides of the magnetic blocks repelling each other. The brittle glass tube is filled with quicklime particles, and its outer wall has tiny water inlet holes. The elastic reset mesh is made of folded elastic memory material. The outer wall of the dielectric-grabbing protective sleeve has a limiting groove corresponding to the position of the magnetic blocks, and a magnetic ring attracted to the magnetic blocks is located inside the limiting groove.

[0010] Furthermore, the inner wall of the limiting groove is polished to obtain a rough surface, and the inside of the limiting groove is coated with an anti-corrosion coating.

[0011] Furthermore, the outer wall of the brittle glass tube is etched to obtain a fragile surface, and the thickness of the brittle glass tube is uneven.

[0012] Furthermore, the media-grabbing protective sleeve is equipped with a self-repairing main line inside. The self-repairing main line includes a main line core, a honeycomb self-repairing sleeve outside the main line core, multiple main line auxiliary cores inside the honeycomb self-repairing sleeve, an armor sleeve outside the honeycomb self-repairing sleeve, a force-bearing stranded wire wound around the outside of the armor sleeve, and a first isolation sleeve outside the force-bearing stranded wire.

[0013] Furthermore, the honeycomb self-repairing sleeve includes an internally opened liquid reservoir, which is filled with repair gel, and the repair gel contains a large number of repair particles.

[0014] Furthermore, the honeycomb self-repair sleeve has a contact liner on the side near the main wire core. The contact liner is made of a flexible thermally conductive material, and the gap between the contact liner and the main wire core is filled with a filler core.

[0015] Furthermore, cotton thread is wound around the outer wall of the tension strand, and the tension strand is made of steel wire with a high elastic modulus.

[0016] Furthermore, the self-repairing main line has secondary lines arranged in a ring at equal intervals on its outer wall. Each secondary line includes a secondary line main core and multiple secondary line auxiliary cores arranged in a ring at equal intervals on the outer wall of the secondary line main core. Each secondary line auxiliary core is covered with a sheath.

[0017] Furthermore, multiple reinforcing cables are wound around the outside of the self-repairing main line. The reinforcing cables are made of multiple insulating fibers hinged together. A second isolation sleeve is provided on the inner wall of the medium-grabbing protective sleeve. The inside of the second isolation sleeve is coated with insulating heat-conducting oil.

[0018] Furthermore, this includes the following steps:

[0019] S1: Wire drawing: Using a wire drawing device to draw copper wire to a suitable size, and then coiling the drawn copper wire for later use;

[0020] S2: Threading: Use a threading device to thread the main core and the auxiliary core of the main line through the honeycomb self-repair sleeve, then wrap the armor sleeve around the honeycomb self-repair sleeve and squeeze it appropriately to keep its shape consistent.

[0021] S3: Stranding: The holding strand is stranded to the outer wall of the armor using a stranding device, and the outer wall of the holding strand is wrapped again. Then the prepared sub-wire is fixed to the outer wall of the self-repairing main wire through the second isolation sleeve. Finally, a medium-grabbing protective sleeve is wrapped around the outside of the second isolation sleeve.

[0022] S4: Additional: Grooving is performed on the outer wall of the protective sleeve for grabbing the medium, and the flip grabbing ring is embedded in the reserved groove.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the advantages of this invention are:

[0025] (1) This scheme buries the cable at the bottom of the seabed and uses the flipping grab ring to increase the contact area with the seabed, reducing the displacement of the cable during the laying process and improving the protection of the cable. After the degradation sleeve decomposes, seawater enters the brittle glass tube and reacts with quicklime to generate a large amount of heat, which causes the brittle glass tube to break in time. The repulsive force between the magnetic blocks, combined with the restoring force of the elastic reset net, allows the elastic reset net to flip outward and be fixed inside the limiting groove. The elastic reset net wraps a large amount of silt and attaches to the cable surface to protect the cable, reduce the damage of marine organisms to the cable, effectively isolate the attachment of marine parasites, protect the safety of the cable, improve the buffer performance, reduce the damage of geological disasters to the cable, and effectively improve the service life of the cable.

[0026] (2) The inner wall of the limiting groove in this scheme is roughened by grinding, and the inside of the limiting groove is coated with anti-corrosion coating. The outer wall of the brittle glass tube is etched to obtain a fragile surface. The brittle glass tube is uneven in thickness. By etching the outer wall of the brittle glass tube, it can be quickly broken when the quicklime is heated, thereby separating the magnetic blocks. The uneven thickness of the outer wall can further increase the breaking rate.

[0027] (3) The medium-grabbing protective sleeve in this scheme is equipped with a self-repairing main line inside. The self-repairing main line includes a main line core, a honeycomb self-repairing sleeve outside the main line core, multiple main line auxiliary cores inside the honeycomb self-repairing sleeve, an armor sleeve outside the honeycomb self-repairing sleeve, a force-bearing stranded wire wrapped around the armor sleeve, and a first isolation sleeve outside the force-bearing stranded wire. The honeycomb self-repairing sleeve separates the multiple main line auxiliary cores, thereby reducing the mutual influence between the main line auxiliary cores and ensuring that the cable can still maintain some communication functions when it is severely damaged, thus improving the practicality of the cable.

[0028] (4) The honeycomb self-repair sleeve in this solution includes an internal liquid storage chamber filled with repair gel. The repair gel contains a large number of repair particles. When the cable is subjected to a violent impact that causes the honeycomb self-repair sleeve and other parts to break, the repair gel and repair particles will be released to repair the damaged area and reduce the serious consequences caused by further seawater leakage.

[0029] (5) The honeycomb self-repair sleeve in this scheme is provided with a contact liner on the side near the main wire core. The contact liner is made of flexible thermal conductive material. The gap between the contact liner and the main wire core is filled with a filler core. The contact liner can dissipate the heat generated by the main wire core in time, reducing the cable damage caused by heat accumulation. The filler core can effectively absorb the vibration of the cable and improve the service life of the cable.

[0030] (6) The outer wall of the holding strand in this scheme is wrapped with cotton thread. The holding strand is made of steel wire with a high elastic coefficient. Wrapping the holding strand with cotton thread can effectively reduce the wear of the holding strand on the armor and improve the service life of the cable.

[0031] (7) In this scheme, the self-repairing main line is surrounded by multiple reinforcing cables. The reinforcing cables are made of multiple insulating fibers hinged together. The inner wall of the medium-grabbing protective sleeve is provided with a second isolation sleeve. The inside of the second isolation sleeve is coated with insulating heat-conducting oil. The strength of the cable is improved by using the reinforcing cables. At the same time, the thermal conductivity and safety of the cable are further improved by using the second isolation sleeve in conjunction with the insulating heat-conducting oil. Attached Figure Description

[0032] Figure 1 This is a comparison diagram showing the main structure of the present invention in its state below the seabed;

[0033] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure at the junction of the gripping medium protective sleeve and the flip-gripping ring of the present invention;

[0035] Figure 4 This is a cross-sectional view of the junction of the gripping medium protective sleeve and the flip-gripping ring of the present invention;

[0036] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0037] Figure 6 This is an exploded view of the self-healing mainline of the present invention;

[0038] Figure 7 This is a cross-sectional view of the honeycomb self-repairing sleeve of the present invention;

[0039] Figure 8This is a schematic diagram of the sub-line structure of the present invention;

[0040] Figure 9 This is a schematic diagram of the main structure of the present invention at the bottom of the seabed;

[0041] Figure 10 This is a comparative image showing the invention exposed on the seabed surface.

[0042] Explanation of the labels in the diagram:

[0043] 1. Medium-grabbing protective sleeve; 11. Reserved groove; 12. Limiting groove; 121. Magnetic ring; 2. Flipping grabbing ring; 21. Degradable sleeve; 22. Magnetic block; 23. Brittle glass tube; 24. Elastic reset mesh; 3. Self-repairing main line; 31. First isolation sleeve; 32. Strength-bearing stranded wire; 33. Armor sheath; 34. Honeycomb self-repairing sleeve; 341. Liquid storage chamber; 342. Contact liner; 343. Filler core; 35. Main line core; 36. Main line auxiliary core; 4. Sub-line; 41. Wrapping sleeve; 42. Sub-line main core; 43. Sub-line auxiliary core; 5. Second isolation sleeve; 6. Reinforcing cable. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within a compatible component. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] Example 1:

[0048] Please see Figure 1-5 A power cable manufacturing process includes a dielectric-grabbing protective sleeve 1. The dielectric-grabbing protective sleeve 1 has a reserved groove 11 on its outside. The reserved groove 11 has a flip-grabbing ring 2 inside. The flip-grabbing ring 2 includes an outer degradable sleeve 21. The upper and lower inner walls of the degradable sleeve 21 are connected to magnetic blocks 22 by elastic reset mesh 24. The magnetic blocks 22 are connected by brittle glass tubes 23. The magnetic blocks 22 repel each other on opposite sides. The brittle glass tubes 23 are filled with quicklime particles. The outer wall of the brittle glass tubes 23 has tiny water inlet holes. The elastic reset mesh 24 is made of elastic memory material folded together. The outer wall of the dielectric-grabbing protective sleeve 1 has a limiting groove 12 corresponding to the position of the magnetic blocks 22. The limiting groove 12 has a magnetic ring 121 that is magnetically attracted to the magnetic blocks 22 inside.

[0049] The inner wall of the limiting groove 12 is polished to obtain a rough surface. The inside of the limiting groove 12 is coated with anti-corrosion paint. The outer wall of the brittle glass tube 23 is etched to obtain a fragile surface. The brittle glass tube 23 has uneven thickness. By etching the outer wall of the brittle glass tube 23, it can be quickly broken when the quicklime is heated, thereby separating the magnetic block 22. The uneven thickness of the outer wall can further increase the breaking rate.

[0050] Please see Figure 6 The dielectric protection sleeve 1 has a self-repairing main line 3 inside, which includes a main line core 35. The main line core 35 is surrounded by a honeycomb self-repairing sleeve 34. The honeycomb self-repairing sleeve 34 has multiple main line auxiliary cores 36 inside, and an armor sleeve 33 is provided outside the honeycomb self-repairing sleeve 34. A force-bearing stranded wire 32 is wound around the armor sleeve 33, and a first isolation sleeve 31 is provided outside the force-bearing stranded wire 32. The honeycomb self-repairing sleeve 34 separates the multiple main line auxiliary cores 36, thereby reducing the mutual influence between the main line auxiliary cores 36 and ensuring that the cable can still maintain some communication functions when it is severely damaged, thus improving the practicality of the cable.

[0051] Please see Figure 7 The honeycomb self-repair sleeve 34 includes an internal liquid storage chamber 341, which is filled with repair gel. The repair gel contains a large number of repair particles. When the cable is subjected to a severe impact that causes the honeycomb self-repair sleeve 34 and other parts to break, the repair gel and repair particles will be released to repair the damaged area and reduce the serious consequences caused by further seawater leakage.

[0052] The honeycomb self-repairing sleeve 34 has a contact liner 342 on the side near the main wire auxiliary core 36. The contact liner 342 is made of flexible thermally conductive material. The gap between the contact liner 342 and the main wire auxiliary core 36 is filled with a filler core 343. The contact liner 342 can dissipate the heat generated by the main wire auxiliary core 36 in time, reducing the cable damage caused by heat accumulation. The filler core 343 can effectively absorb the vibration of the cable, improving the service life of the cable.

[0053] The outer wall of the tension strand 32 is wrapped with cotton thread. The tension strand 32 is made of steel wire with a high elasticity coefficient. Wrapping the tension strand 32 with cotton thread can effectively reduce the wear of the tension strand 32 on the armor 33 and improve the service life of the cable.

[0054] Multiple reinforcing cables 6 are wound around the outside of the self-repairing main line 3. The reinforcing cables 6 are made of multiple insulating fibers hinged together. A second isolation sleeve 5 is provided on the inner wall of the medium-grabbing protective sleeve 1. The inside of the second isolation sleeve 5 is coated with insulating heat-conducting oil. The strength of the cable is improved by using the reinforcing cables 6. At the same time, the thermal conductivity and safety of the cable are further improved by using the second isolation sleeve 5 in conjunction with the insulating heat-conducting oil.

[0055] A power cable manufacturing process includes the following steps:

[0056] S1: Wire drawing: Using a wire drawing device to draw copper wire to a suitable size, and then coiling the drawn copper wire for later use;

[0057] S2: Threading: Using a threading device, thread the main wire core 35 and the main wire auxiliary core 36 through the honeycomb self-repairing sleeve 34, then wrap the armor sleeve 33 around the honeycomb self-repairing sleeve 34 and squeeze it appropriately to keep its shape consistent.

[0058] S3: Stranding: The holding strand 32 is stranded to the outer wall of the armor 33 using a stranding device, and the outer wall of the holding strand 32 is wrapped again. Then the prepared sub-line 4 is fixed to the outer wall of the self-repairing main line 3 through the second isolation sleeve 5. Finally, the grabbing medium protective sleeve 1 is wrapped around the outside of the second isolation sleeve 5.

[0059] S4: Additional: Grooving is performed on the outer wall of the medium-grabbing protective sleeve 1, and the flipping grabbing ring 2 is embedded in the reserved groove 11.

[0060] Please refer to the following: Figure 8 The self-repairing main line 3 has a ring of equidistant sub-lines 4 on its outer wall. The sub-lines 4 include a sub-line main core 42 and a plurality of sub-line auxiliary cores 43 arranged in a ring on the outer wall of the sub-line main core 42. The sub-line auxiliary cores 43 are covered with a sheath 41.

[0061] When using this cable, please refer to the following: Figure 9-10First, the cable needs to be buried at the bottom of the seabed. The flipping grab ring 2 is used to increase the contact area with the seabed, reduce the displacement of the cable during the laying process, and improve the protection of the cable. After the cable is buried for a period of time, the decomposition of the degradation sleeve 21 allows seawater to enter the brittle glass tube 23 and react with quicklime to generate a large amount of heat, which causes the brittle glass tube 23 to break in time. The repulsive force between the magnetic blocks 22 and the restoring force of the elastic reset net 24 allow the elastic reset net 24 to flip outward and be fixed inside the limiting groove 12. The elastic reset net 24 wraps a large amount of silt and attaches to the cable surface to protect the cable, reduce the damage of marine organisms to the cable, effectively isolate the attachment of marine parasites, protect the safety of the cable, improve the buffer performance, reduce the damage of geological disasters to the cable, and effectively improve the service life of the cable.

[0062] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A power cable manufacturing process, comprising acquiring a dielectric protective sleeve (1), characterized in that: The protective sleeve (1) for grasping medium has a reserved groove (11) on the outside. The reserved groove (11) has a flip grasping ring (2) inside. The flip grasping ring (2) includes an outer degradation sleeve (21). The inner walls of the upper and lower sides of the degradation sleeve (21) are connected to magnetic blocks (22) through an elastic reset mesh (24). The magnetic blocks (22) are connected to each other through a brittle glass tube (23). The magnetic blocks (22) are magnetically repulsive on opposite sides. The brittle glass tube (23) is filled with quicklime particles. The outer wall of the brittle glass tube (23) has a small water inlet hole. The elastic reset mesh (24) is made of folded elastic memory material. The outer wall of the protective sleeve (1) for grasping medium has a limiting groove (12) corresponding to the position of the magnetic block (22). The limiting groove (12) has a magnetic ring (121) that is magnetically attracted to the magnetic block (22).

2. The power cable manufacturing process according to claim 1, characterized in that: The inner wall of the limiting groove (12) is roughened by grinding, and the inside of the limiting groove (12) is coated with anti-corrosion paint.

3. The power cable manufacturing process according to claim 1, characterized in that: The outer wall of the brittle glass tube (23) is etched to obtain a fragile surface, and the thickness of the brittle glass tube (23) is uneven.

4. The power cable manufacturing process according to claim 1, characterized in that: The media-grabbing protective sleeve (1) is provided with a self-repairing main line (3) inside. The self-repairing main line (3) includes a main line core (35). The main line core (35) is provided with a honeycomb self-repairing sleeve (34) outside. The honeycomb self-repairing sleeve (34) is provided with multiple main line auxiliary cores (36) inside. The honeycomb self-repairing sleeve (34) is provided with an armor sleeve (33) outside. The armor sleeve (33) is wound with a force-bearing stranded wire (32) outside. The force-bearing stranded wire (32) is provided with a first isolation sleeve (31) outside.

5. The power cable manufacturing process according to claim 4, characterized in that: The honeycomb self-repairing sleeve (34) includes an internal liquid storage cavity (341), which is filled with repair gel, and the repair gel contains a large number of repair particles.

6. The power cable manufacturing process according to claim 4, characterized in that: The honeycomb self-repairing sleeve (34) has a contact liner (342) on the side near the main wire attachment core (36). The contact liner (342) is made of flexible thermally conductive material, and the gap between the contact liner (342) and the main wire attachment core (36) is filled with a filler core (343).

7. The power cable manufacturing process according to claim 4, characterized in that: The outer wall of the tension strand (32) is wrapped with cotton thread, and the tension strand (32) is made of steel wire.

8. The power cable manufacturing process according to claim 4, characterized in that: The self-repairing main line (3) has secondary lines (4) arranged in a ring at equal intervals on its outer wall. The secondary lines (4) include a secondary line main core (42). The secondary line main core (42) has a plurality of secondary line auxiliary cores (43) arranged in a ring at equal intervals on its outer wall. The secondary line auxiliary cores (43) are covered with a sheath (41).

9. The power cable manufacturing process according to claim 4, characterized in that: The self-repairing main line (3) is surrounded by multiple reinforcing cables (6), which are made of multiple insulating fibers hinged together. The inner wall of the medium-grabbing protective sleeve (1) is provided with a second isolation sleeve (5), and the inside of the second isolation sleeve (5) is coated with insulating heat-conducting oil.

10. A power cable manufacturing process according to any one of claims 1-9, characterized in that: Includes the following steps: S1: Wire drawing: The copper wire is stretched using a wire drawing device and then wound up for later use; S2: Threading: Using a threading device, thread the main core (35) and the main auxiliary core (36) through the honeycomb self-repair sleeve (34), then wrap the armor sleeve (33) around the honeycomb self-repair sleeve (34) and squeeze it appropriately to keep its shape consistent; S3: Stranding: The holding strand (32) is stranded to the outer wall of the armor (33) using a stranding device, and the outer wall of the holding strand (32) is wrapped again. Then the prepared sub-wire (4) is fixed to the outer wall of the self-repairing main wire (3) through the second isolation sleeve (5). Finally, the grabbing medium protective sleeve (1) is wrapped around the outside of the second isolation sleeve (5). S4: Additional: Grooving is performed on the outer wall of the grabbing medium protective sleeve (1), and the flip grabbing ring (2) is embedded in the reserved groove (11).

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