High-voltage cross-linked polyethylene insulated power cable and processing system and method thereof

Abstract

The invention relates to the field of cables, in particular to a high-voltage cross-linked polyethylene insulated power cable and a processing system and method thereof. The method comprises the following steps: step 1, processing a cable core I, an armor I, a cable core II and a protective layer; 2, placing a plurality of cable cores II in the protective layer; 3, two coupled armors I are installed on the outer wall of the cable core I, and a protective layer I is wrapped on the outer wall of the cable core I; 4, placing the protective layer I in the middle of the protective layer, and then filling the filling layer; and 5, forming a protective layer II and an insulating layer on the outer wall of the protective layer in batches to complete the processing of the cable. A protection layer for fixing a plurality of cable cores distributed circumferentially can be processed, and the convenience of cable processing is improved.

Description

Technical Field

[0001] The invention relates to the field of cables, and more particularly to a high-voltage cross-linked polyethylene insulated power cable and a processing system and method thereof. Background Art

[0002] Power cables are cables used to transmit and distribute electrical energy. Power cables are commonly used in urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are used for transmission and distribution in the trunk lines of power systems. With the development of society, the demand for power cables is increasing. During the processing of power cables, they are gradually processed from the middle to the outside. During the processing, it is inconvenient to fix the positions of multiple cable cores distributed on a certain circumference, which will lead to slow processing of power cables. When preparing power cables now, it is not possible to process a protective layer that fixes multiple cable cores distributed on a certain circumference to increase the convenience of cable processing. Summary of the invention

[0003] In order to improve the deficiencies of the prior art, the present invention provides a high-voltage cross-linked polyethylene insulated power cable and a processing system and method thereof, which can process a protective layer of a cable core with multiple circumferential distributions fixed thereon, thereby increasing the convenience of cable processing.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A high-voltage cross-linked polyethylene insulated power cable comprises a cable core I and two armors I coupled to each other and coated on the outer wall of the cable core I, a protective layer I is arranged on the outer wall of the two armors I, a filling layer is arranged on the outer wall of the protective layer I, the outer wall of the filling layer is coated with a protective layer, a plurality of cable cores II are arranged between the filling layer and the protective layer, the outer wall of the protective layer is coated with a protective layer II, the outer wall of the protective layer II is coated with an insulating layer, and the protective layer is provided with a placement cavity for placing the plurality of cable cores II.

[0006] Furthermore, a processing system for processing the above-mentioned high-voltage cross-linked polyethylene insulated power cable includes a molding outer frame, and an upper end frame fixedly connected to the upper end of the molding outer frame, a molding inner frame fixedly connected to the middle of the upper end frame, a molding cavity for molding a protective layer is provided at the lower parts of the molding outer frame and the molding inner frame, and a slope is provided at the upper part of the molding inner frame for guiding the raw material to the molding cavity.

[0007] Furthermore, filter plates are fixedly connected to the molded outer frame and the molded inner frame.

[0008] Furthermore, a rotating frame is rotatably connected to the upper end frame, and a plurality of spiral plates are fixedly connected to the lower part of the rotating frame.

[0009] Further, according to the above-mentioned method for processing a cable using a high-voltage cross-linked polyethylene insulated power cable processing system, the method comprises the following steps:

[0010] Step 1: Processing cable core I, armor I, cable core II and protective layer;

[0011] Step 2: Place multiple cable cores II into the protective layer;

[0012] Step 3: Install two coupled armors I on the outer wall of the cable core I and cover it with a protective layer I;

[0013] Step 4: Place the protective layer I in the middle of the protective layer and then fill the filling layer;

[0014] Step 5: Form protective layer II and insulating layer on the outer wall of the protective layer in batches to complete the cable processing.

[0015] The beneficial effects of the high-voltage cross-linked polyethylene insulated power cable and the processing system and method thereof of the present invention are: a protective layer of a cable core with multiple circumferential distributions is processed to increase the convenience during cable processing; and the particles in the molding material can be filtered out while reducing the flow rate of the material to ensure the stable molding of the cable part structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 is a schematic diagram of the cable structure;

[0018] Figure 2 Schematic diagram of the front view of the cable structure;

[0019] Figure 3 It is a structural schematic diagram of a power cable processing system;

[0020] Figure 4 It is a schematic diagram of the structure of the molded protective layer;

[0021] Figure 5 for Figure 4 a cross-sectional view of the structure shown;

[0022] Figure 6 for Figure 4 a top view of the structure shown;

[0023] Figure 7 A structural diagram to promote material extrusion molding;

[0024] Figure 8 A schematic diagram of the structure for driving the spiral plate to rotate;

[0025] Fig. 9Schematic diagram of the structure for adjusting the material temperature.

[0026] In the figure: cable core Ⅰ01; armor Ⅰ02; protective layer Ⅰ03; filling layer 04; cable core Ⅱ05; protective layer 06; protective layer Ⅱ07; insulating layer 08; forming outer frame 11; forming inner frame 12; upper end frame 13; adding frame 14; rotating frame 21; gear ring 22; spiral plate 23; filter plate 24; side wheel 25; heating frame Ⅰ31; heating frame Ⅱ32; connecting pipe 33; cooling frame 41; circulation pipe 42. DETAILED DESCRIPTION

[0027] refer to Figure 1 and 2 , detailed description of the embodiment of high voltage cross-linked polyethylene insulated power cable:

[0028] A high-voltage cross-linked polyethylene insulated power cable, comprising a cable core Ⅰ01 and two armors Ⅰ02 coated on the outer wall of the cable core Ⅰ01 and coupled to each other, the armor Ⅰ02 plays a role in supporting and protecting the cable core Ⅰ01, the outer walls of the two armors Ⅰ02 are coated with a protective layer Ⅰ03, which plays a role of protection, flame retardancy and insulation, the outer wall of the protective layer Ⅰ03 is provided with a filling layer 04, which plays a role of filling, supporting and isolating, the outer wall of the filling layer 04 is coated with a protective layer 06, the protective layer 06 is provided with a placement cavity for placing multiple cable cores Ⅱ05, and multiple cable cores Ⅱ05 are arranged between the filling layer 04 and the protective layer 06. 5. The protective layer 06 plays the role of limiting, protecting and flame retardant for multiple cable cores Ⅱ05, and can limit the position of multiple cable cores Ⅱ05. During production, multiple cable cores Ⅱ05 can be placed on the protective layer 06 first, and in conjunction with the processing of cable core Ⅰ01, armor Ⅰ02 and protective layer Ⅰ03, the protective layer Ⅰ03 is placed in the middle of the protective layer 06, and then the filling layer 04 is filled. The outer wall of the protective layer 06 is covered with a protective layer Ⅱ07, and the outer wall of the protective layer Ⅱ07 is covered with an insulating layer 08. The protective layer Ⅱ07 and the insulating layer 08 play a role of protection, insulation, flame retardancy and anti-oxidation for the middle structure.

[0029] refer to Figure 3 , 4 , 5 and 6, detailed description of the embodiment of producing protective layer 06:

[0030] The processing system for processing the above-mentioned high-voltage cross-linked polyethylene insulated power cable includes a molding outer frame 11, and an upper end frame 13 fixedly connected to the upper end of the molding outer frame 11, and a molding inner frame 12 is fixedly connected to the middle of the upper end frame 13. The molding outer frame 11 and the molding inner frame 12 correspond to each other inside and outside, and are used to extrude the added material from the middle of the molding outer frame 11 and the molding inner frame 12 to form the protective layer 06. The lower part of the molding outer frame 11 and the molding inner frame 12 is provided with a molding cavity for molding the protective layer 06. Under the gravity of the material of the molding protective layer 06 itself and the pressure that pushes the material to be extruded, the material is fully dispersed to carry out the molding process of the protective layer 06. The upper part of the molding inner frame 12 is provided with a slope surface for guiding the raw material to the molding cavity, thereby ensuring that the material added from the top can be gathered, molded and extruded in the molding cavity of the molding protective layer 06 to carry out the molding process of the protective layer 06.

[0031] refer to Figure 7 , detailed description of an embodiment of filtering the material used to form the protective layer 06 and slowing down the material flow rate:

[0032] The molding outer frame 11 and the molding inner frame 12 are fixedly connected with a filter plate 24, and a plurality of filter holes are arranged on the filter plate 24. The molded material is filtered through the filter plate 24, and the filtered material flows into the molding cavity between the lower molding outer frame 11 and the molding inner frame 12 to form the protective layer 06. At the same time, the filter plate 24 can block the molded material, slow down the downstream speed of the material, and prevent the material from not being accumulated and failing to form a good quality protective layer 06.

[0033] refer to Figure 7 , detailed description of the embodiment of promoting material feeding and forming:

[0034] The upper end frame 13 is rotatably connected to a rotating frame 21, and a plurality of spiral plates 23 are fixedly connected to the lower part of the rotating frame 21. A gear ring 22 is fixedly connected to the rotating frame 21, and a side wheel 25 driving the gear ring 22 to rotate is rotatably connected to the upper end frame 13. The side wheel 25 is fixedly connected to the output shaft of the reduction motor I, and the reduction motor I is fixedly connected to the upper end frame 13. The reduction motor I is started, and the reduction motor I drives the side wheel 25 to rotate, and the side wheel 25 engages and drives the gear ring 22 to rotate, and the gear ring 22 drives the rotating frame 21 to rotate, and the rotating frame 21 drives the plurality of spiral plates 23 to rotate, thereby realizing the pushing of the material, and the upper end surface of the filter plate 24 coincides with the lower end surface of the plurality of spiral plates 23. Therefore, the rotating plurality of spiral plates 23 can push the filtered material on the filter plate 24 to move, prevent the filtered material from accumulating on the filter plate 24, and affect the filtering effect of the filter plate 24, and at the same time ensure that the material can be pushed to form the protective layer 06.

[0035] refer to Figure 3 and 8 , detailed description of the embodiment of adding materials:

[0036] The upper end frame 13 is fixedly connected with an adding frame 14 , so that materials can be added into the forming outer frame 11 and the forming inner frame 12 by adding materials into the adding frame 14 .

[0037] refer to Figure 3 and 9 , detailed description of the embodiments for ensuring the flow of added materials and preventing the materials from solidifying:

[0038] A heating frame I31 is fixedly connected to the upper part of the molding outer frame 11, and two connecting pipes 33 are fixedly connected to the outer wall of the heating frame I31. A heating frame II32 connected to the heating frame I31 is fixedly connected to the molding inner frame 12. The two connecting pipes 33 are connected to an externally arranged heating furnace, so that high-temperature steam is connected to the two connecting pipes 33 through the externally arranged heating furnace. The two connecting pipes 33 ensure that the high-temperature steam in the externally arranged heating furnace can flow into the heating frame I31 and the heating frame II32 for circulation of high-temperature steam. The high-temperature steam in the heating frame I31 and the heating frame II32 heats the material in the upper part of the molding outer frame 11 and the molding inner frame 12 to ensure the fluidity of the material, and heats from both the inside and the outside to prevent the material from having a heating dead corner, causing the material to solidify and affecting the extrusion molding of the material.

[0039] refer to Figure 3 and 9 , detailed description of the embodiment of cooling and shaping the formed material:

[0040] A cooling frame 41 is fixedly connected to the lower portion of the molding outer frame 11, and two circulation pipes 42 are fixedly connected to the cooling frame 41. Both circulation pipes 42 are connected to an external cooling device. The cooling frame 41 is connected to an external cooling device through the two circulation pipes 42 and circulates the coolant, so that the molded protective layer 06 is cooled by the coolant in the cooling frame 41, thereby achieving shaping of the protective layer 06.

[0041] refer to Figure 2 and 3 , an embodiment of the method for processing high voltage cross-linked polyethylene insulated power cable is described in detail:

[0042] According to the above-mentioned method for processing cables by a high-voltage cross-linked polyethylene insulated power cable processing system, the method comprises the following steps:

[0043] Step 1: Process the cable core Ⅰ01, armor Ⅰ02, cable core Ⅱ05 and protective layer 06 to perform preliminary processing of the power cable;

[0044] Step 2: Place multiple cable cores II 05 into the protective layer 06, and perform positioning and installation of multiple cable cores II 05;

[0045] Step 3: Install two coupled armors Ⅰ02 on the outer wall of the cable core Ⅰ01 and cover the protective layer Ⅰ03 to achieve the installation of the cable core Ⅰ01, the two armors Ⅰ02 and the protective layer Ⅰ03;

[0046] Step 4: After placing the protective layer I 03 in the middle of the protective layer 06, the filling layer 04 is filled, and the installation and processing of the cable core I 01 and multiple cable cores II 05 are completed;

[0047] Step 5: Forming the protective layer II 07 and the insulating layer 08 on the outer wall of the protective layer 06 in batches to complete the processing of the cable.

Claims

1. A high voltage cross-linked polyethylene insulated power cable, characterized in that: The invention comprises a cable core I (01) and two armors I (02) coated on the outer wall of the cable core I (01) and coupled to each other, a protective layer I (03) is arranged on the outer wall of the two armors I (02), a filling layer (04) is arranged on the outer wall of the protective layer I (03), a protective layer (06) is coated on the outer wall of the filling layer (04), a plurality of cable cores II (05) are arranged between the filling layer (04) and the protective layer (06), a protective layer II (07) is coated on the outer wall of the protective layer (06), an insulating layer (08) is coated on the outer wall of the protective layer II (07), and the protective layer (06) is provided with a placement cavity for placing the plurality of cable cores II (05).

2. A processing system for processing the high voltage cross-linked polyethylene insulated power cable according to claim 1, characterized in that: The invention comprises a molding outer frame (11), and an upper end frame (13) fixedly connected to the upper end of the molding outer frame (11); a molding inner frame (12) is fixedly connected to the middle of the upper end frame (13); a molding cavity for molding a protective layer (06) is arranged at the lower parts of the molding outer frame (11) and the molding inner frame (12); and a slope for guiding raw materials to the molding cavity is arranged at the upper part of the molding inner frame (12).

3. A high voltage cross-linked polyethylene insulated power cable processing system according to claim 2, characterized in that: A filter plate (24) is fixedly connected to the molded outer frame (11) and the molded inner frame (12).

4. A high voltage cross-linked polyethylene insulated power cable processing system according to claim 3, characterized in that: The upper end frame (13) is rotatably connected to a rotating frame (21), and a plurality of spiral plates (23) are fixedly connected to the lower part of the rotating frame (21).

5. A high voltage cross-linked polyethylene insulated power cable processing system according to claim 4, characterized in that: A gear ring (22) is fixedly connected to the rotating frame (21), and a side wheel (25) for driving the gear ring (22) to rotate is rotatably connected to the upper end frame (13).

6. A high voltage cross-linked polyethylene insulated power cable processing system according to claim 4, characterized in that: An adding frame (14) is fixedly connected to the upper end frame (13).

7. A high voltage cross-linked polyethylene insulated power cable processing system according to claim 4, characterized in that: A heating frame I (31) is fixedly connected to the upper part of the molding outer frame (11), two connecting pipes (33) are fixedly connected to the outer wall of the heating frame I (31), and a heating frame II (32) connected to the heating frame I (31) is fixedly connected to the molding inner frame (12).

8. A high voltage cross-linked polyethylene insulated power cable processing system according to claim 4, characterized in that: A cooling frame (41) is fixedly connected to the lower part of the molding outer frame (11), and two circulation pipes (42) are fixedly connected to the cooling frame (41).

9. A high voltage cross-linked polyethylene insulated power cable processing system according to claim 4, characterized in that: The upper end surface of the filter plate (24) overlaps with the lower end surfaces of the plurality of spiral plates (23).

10. A method for processing cables using a high voltage cross-linked polyethylene insulated power cable processing system according to any one of claims 2 to 9, characterized in that: The method comprises the following steps: Step 1: Processing cable core I (01), armor I (02), cable core II (05) and protective layer (06); Step 2: placing multiple cable cores II (05) into the protective layer (06); Step 3: Install two coupled armors I (02) on the outer wall of the cable core I (01) and cover it with a protective layer I (03); Step 4: Place the protective layer I (03) in the middle of the protective layer (06) and then fill the filling layer (04); Step 5: forming a protective layer II (07) and an insulating layer (08) on the outer wall of the protective layer (06) in stages to complete the processing of the cable.

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