Power cable with large-section special-shaped conductor structure

Abstract

The utility model provides a power cable with a large-section special-shaped conductor structure, which comprises an outer sheath, an electric leakage monitoring mechanism is arranged on the outer sheath, a spongy strip buffer layer is fixedly connected onto the inner wall of the outer sheath, a galvanized steel wire armor layer is fixedly connected onto the inner wall of the spongy strip buffer layer, and the galvanized steel wire armor layer is fixedly connected onto the inner wall of the outer sheath. The inner wall of the galvanized steel wire armor layer is fixedly connected with the inner sheath, the filling layer is arranged in the inner cavity of the inner sheath, and the first insulation protection layer is arranged in the filling layer. Through cooperation of the galvanized steel wire armor layer and the aluminum foil shielding layer, external electromagnetic waves can be reflected and absorbed, and the anti-electromagnetic interference function is achieved; through the design of the aluminum foil shielding layer, interference between the special-shaped conductors can be shielded at the same time, the problem that normal transmission work of the special-shaped conductors is affected is avoided, and through the design of the filling layer, the problem that the service life of the structure is affected due to mutual friction between the first insulation protection layers is avoided.

Description

Technical Field

[0001] The utility model relates to a power cable with a large cross-section special-shaped conductor structure, belonging to the technical field of cable structures. Background Art

[0002] A cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is a wire for transmitting electric power or information from one place to another. With the continuous expansion of the scale of industries such as the power industry, data communication industry, urban rail transit industry, automotive industry, and shipbuilding, the demand for wire and cable will also increase rapidly, and the requirements for wire and cable are constantly improving. According to the geographical location and use of the cable, the laying methods of the cable mainly include laying along the air, laying in pipes, laying in ditches, direct burial underground, etc.

[0003] A Chinese patent discloses a power cable with the publication number CN217690564U. The technical solution disclosed in this patent document is as follows: It includes an inner core for transmitting electric power signals, and an insulating sheath is arranged outside the inner core; a protective structure is arranged outside the insulating sheath, and the protective structure includes a rubber sheath sleeved outside the insulating sheath. A limiting strip is arranged on the outer side wall of the insulating sheath facing the rubber sheath, and the limiting strip extends along the length direction of the insulating sheath; a limiting groove is arranged on the side wall of the rubber sheath facing the limiting strip.

[0004] In order to solve the problem that traditional cables generally have relatively weak structural strength, the prior art is to adopt a method of combining structures such as a mica high-temperature resistant layer, an aramid fiber braided layer, and a Teflon protective layer for treatment. However, there will still be a situation where electromagnetic interference cannot be shielded, and electromagnetic interference will affect the transmission effect of the cable, thereby causing problems that the normal operation of the cable will be affected in some environments. Summary of the Utility Model

[0005] Based on the above background, the purpose of the present utility model is to provide a power cable with a large cross-section special-shaped conductor structure to solve the problems described in the background art.

[0006] In order to achieve the above utility model purpose, the present utility model provides the following technical solutions:

[0007] A power cable with a large cross-section special-shaped conductor structure includes an outer sheath, on which a leakage monitoring mechanism is arranged. A sponge-like strip buffer layer is fixedly connected to the inner wall of the outer sheath. A galvanized steel wire armor layer is fixedly connected to the inner wall of the sponge-like strip buffer layer. An inner sheath is fixedly connected to the inner wall of the galvanized steel wire armor layer. A filling layer is arranged in the inner cavity of the inner sheath. An insulating protection layer I is arranged inside the filling layer. An aluminum foil shielding layer is fixedly connected to the inner wall of the insulating protection layer I. An insulating protection layer II is fixedly connected to the inner wall of the aluminum foil shielding layer. A special-shaped conductor is fixedly connected to the inner wall of the insulating protection layer II.

[0008] Preferably, the thickness value of the galvanized steel wire armor layer is set to 1 mm, and the thickness value of the aluminum foil shielding layer is set to 0.5 mm.

[0009] Preferably, the filling layer is set as a mixture of talcum powder and a polypropylene mesh belt, and the material of the sponge-like strip buffer layer is set as a sponge-like strip.

[0010] Preferably, the leakage monitoring mechanism includes a splicing sleeve I and a splicing sleeve II. The splicing sleeve II is detachably connected to the top of the splicing sleeve I. Splicing rubber rings are fixedly connected to the inner walls of the splicing sleeve I and the splicing sleeve II. The inner wall of the splicing rubber ring is movably connected to the outer wall of the outer sheath.

[0011] Preferably, a metal block is fixedly installed on the inner wall of the splicing sleeve II. A metal insertion pin is fixedly connected to the bottom of the metal block. The bottom end of the metal insertion pin extends into the inside of the galvanized steel wire armor layer.

[0012] Preferably, a protection housing is fixedly installed on the top of the splicing sleeve II. A leakage current sensor located in the inner cavity of the protection housing is fixedly installed on the top of the splicing sleeve II. The detection end of the leakage current sensor is electrically connected to the top of the metal block. A movable cover is movably inserted into the top of the protection housing.

[0013] Preferably, an inner support plate is fixedly installed on the right side of the inner wall of the protection housing. A flashing surface light source is fixedly installed on the top of the inner support plate. The leakage current sensor is electrically connected to the flashing surface light source through an external controller.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] Through the cooperation of the galvanized steel wire armor layer and the aluminum foil shielding layer, it can reflect and absorb external electromagnetic waves, realize the function of anti-electromagnetic interference, and ensure the transmission effect of the special-shaped conductor. Through the design of the aluminum foil shielding layer, the interference between special-shaped conductors can be shielded at the same time, avoiding the problem that the normal transmission work of the special-shaped conductor will be affected. Through the design of the filling layer, the problem that the insulation protection layers rub against each other and affect the service life of this structure is avoided. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0017] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0018] Figure 2 Schematic end structure diagram of the outer sheath of the present invention;

[0019] Figure 3 is Figure 2 enlarged view of structure A in

[0020] Figure 4 Schematic separation structure diagram of the first splicing sleeve and the second splicing sleeve of the present invention;

[0021] Figure 5 Schematic internal structure diagram of the protective housing of the present invention.

[0022] In the figure: 1. Outer sheath; 11. Buffer layer; 12. Galvanized steel wire armor layer; 13. Inner sheath; 14. First insulation protection layer; 15. Aluminum foil shielding layer; 16. Second insulation protection layer; 17. Special-shaped conductor; 2. Leakage monitoring mechanism; 21. First splicing sleeve; 22. Second splicing sleeve; 23. Splicing rubber ring; 24. Metal block; 25. Metal insertion pin; 26. Protective housing; 261. Movable cover; 262. Leakage current sensor; 263. Inner support plate; 264. Flashing surface light source. Detailed Embodiment

[0023] The following will further specifically illustrate the technical solutions of the present invention through specific embodiments in combination with the drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the protection scope of the present invention.

[0024] In the present utility model, unless otherwise specified, all parts and percentages are in weight units, and the equipment and raw materials used can be obtained from the market or are commonly used in the art. The methods in the following embodiments are conventional methods in the art unless otherwise specified. The components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0025] The following will make a detailed description of the embodiments of the present utility model with reference to the accompanying drawings. In the following detailed description, for the convenience of explanation, many specific details are elaborated to provide a comprehensive understanding of the embodiments of the present utility model. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.

[0026] As Figures 1-5 shown, a power cable with a large cross-section special-shaped conductor structure includes an outer sheath 1, a leakage monitoring mechanism 2 is arranged on the outer sheath 1, a sponge-like strip buffer layer 11 is fixedly connected to the inner wall of the outer sheath 1, a galvanized steel wire armor layer 12 is fixedly connected to the inner wall of the sponge-like strip buffer layer 11, an inner sheath 13 is fixedly connected to the inner wall of the galvanized steel wire armor layer 12, a filling layer is arranged in the inner cavity of the inner sheath 13, an insulating protection layer I 14 is arranged inside the filling layer, an aluminum foil shielding layer 15 is fixedly connected to the inner wall of the insulating protection layer I 14, an insulating protection layer II 16 is fixedly connected to the inner wall of the aluminum foil shielding layer 15, a special-shaped conductor 17 is fixedly connected to the inner wall of the insulating protection layer II 16. The thickness value of the galvanized steel wire armor layer 12 is set to 1 mm, the thickness value of the aluminum foil shielding layer 15 is set to 0.5 mm, the filling layer is set as a mixture of talcum powder and a polypropylene mesh belt, the material of the sponge-like strip buffer layer 11 is set as a sponge-like strip. The galvanized steel wire armor layer 12 and the aluminum foil shielding layer 15 can reflect and absorb external electromagnetic waves to achieve the function of anti-electromagnetic interference and ensure the transmission effect of the special-shaped conductor 17. The aluminum foil shielding layer 15 can simultaneously shield the interference between the special-shaped conductors 17 to avoid the problem that the normal transmission work of the special-shaped conductors 17 is affected. Through the design of the filling layer, the problem that the insulating protection layer I 14 rubs against each other and affects the service life of this structure is avoided. Through the design of the sponge-like strip buffer layer 11, the force on this structure can be buffered, and the compressive capacity of this structure can be improved.

[0027] In this embodiment, the leakage monitoring mechanism 2 includes a splicing sleeve 1 21 and a splicing sleeve 22. The splicing sleeve 22 is detachably connected to the top of the splicing sleeve 1 21. The inner walls of the splicing sleeve 1 21 and the splicing sleeve 22 are fixedly connected with a splicing rubber ring 23. The inner wall of the splicing rubber ring 23 is movably connected to the outer wall of the outer sheath 1. A metal block 24 is fixedly installed on the inner wall of the splicing sleeve 22. A metal plug pin 25 is fixedly connected to the bottom of the metal block 24. The bottom end of the metal plug pin 25 extends to the inside of the galvanized steel wire armor layer 12, and the splicing sleeve 1 is fixedly connected to the inner wall of the splicing sleeve 21. 21 and the splicing sleeve 22 are connected by bolts and installed on the outer wall of the outer sheath 1, and at the same time, the metal plug pin 25 is plugged into the inside of the galvanized steel wire armor layer 12. If leakage current occurs in this structure, current will be generated on the galvanized steel wire armor layer 12, and the current can be guided to the metal block 24 through the metal plug pin 25. Then, through the design of the leakage current sensor 262, this signal can be monitored, and then the flashing surface light source 264 is controlled by an external controller to work, prompting nearby personnel, so that the operator can take corresponding active measures in time.

[0028] In this embodiment, a protective shell 26 is fixedly installed on the top of the splicing sleeve 22, a leakage current sensor 262 located in the inner cavity of the protective shell 26 is fixedly installed on the top of the splicing sleeve 22, the detection end of the leakage current sensor 262 is electrically connected to the top of the metal block 24, a movable cover 261 is movably plugged into the top of the protective shell 26, an inner support plate 263 is fixedly installed on the right side of the inner wall of the protective shell 26, a flashing surface light source 264 is fixedly installed on the top of the inner support plate 263, and the leakage current sensor 262 is connected to the flashing surface light source 264 through an external controller. The electrical signal is connected between them. The material of the protective shell 26 is transparent plastic, which is convenient for the passage of light from the flashing surface light source 264. The connection relationship design between the protective shell 26 and the movable cover 261 is convenient for the operator to disassemble and assemble the movable cover 261 to maintain the leakage current sensor 262 and the flashing surface light source 264. The leakage current sensor 262 is an existing structural model and can be set to WBL412F21, etc. Through the design of the splicing rubber ring 23, the connection between the splicing sleeve 1 21, the splicing sleeve 22 and the outer wall of the outer sheath 1 can be sealed.

[0029] The working principle of the power cable with a large-section special-shaped conductor structure of the utility model is as follows: the galvanized steel wire armor layer 12 and the aluminum foil shielding layer 15 can reflect and absorb external electromagnetic waves to achieve the function of anti-electromagnetic interference. When in use, the splicing sleeve 1 21 and the splicing sleeve 2 22 can be connected by bolts and installed on the outer wall of the outer sheath 1, and at the same time, the metal plug pin 25 is plugged into the inside of the galvanized steel wire armor layer 12. If leakage current occurs in this structure, the leakage current sensor 262 can monitor this signal, and then control the flashing surface light source 264 to work to prompt nearby personnel.

[0030] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A power cable with a large cross-section special-shaped conductor structure, comprising an outer sheath (1), characterized in that: The outer sheath (1) is provided with a leakage monitoring mechanism (2); a sponge-like strip buffer layer (11) is fixedly connected to the inner wall of the outer sheath (1); a galvanized steel wire armor layer (12) is fixedly connected to the inner wall of the sponge-like strip buffer layer (11); an inner sheath (13) is fixedly connected to the inner wall of the galvanized steel wire armor layer (12); a filling layer is provided in the inner cavity of the inner sheath (13); an insulating protective layer 1 (14) is provided inside the filling layer; an aluminum foil shielding layer (15) is fixedly connected to the inner wall of the insulating protective layer 1 (14); an insulating protective layer 2 (16) is fixedly connected to the inner wall of the aluminum foil shielding layer (15); and a special-shaped conductor (17) is fixedly connected to the inner wall of the insulating protective layer 2 (16).

2. The power cable with a large cross-section special-shaped conductor structure according to claim 1, characterized in that: The thickness of the galvanized steel wire armor layer (12) is set to 1 mm, and the thickness of the aluminum foil shielding layer (15) is set to 0.5 mm.

3. The power cable with a large cross-section special-shaped conductor structure according to claim 1, characterized in that: The filling layer is configured as a mixture of talcum powder and polypropylene mesh tape, and the material of the sponge-like tape buffer layer (11) is configured as a sponge-like tape.

4. The power cable with a large cross-section special-shaped conductor structure according to claim 1, characterized in that: The leakage monitoring mechanism (2) comprises a first splicing sleeve (21) and a second splicing sleeve (22); the second splicing sleeve (22) is detachably connected to the top of the first splicing sleeve (21); the inner walls of the first splicing sleeve (21) and the second splicing sleeve (22) are fixedly connected with a splicing rubber ring (23); the inner wall of the splicing rubber ring (23) is movably connected to the outer wall of the outer protective sleeve (1).

5. The power cable with a large cross-section special-shaped conductor structure according to claim 4, characterized in that: A metal block (24) is fixedly mounted on the inner wall of the second splicing sleeve (22), a metal plug pin (25) is fixedly connected to the bottom of the metal block (24), and the bottom end of the metal plug pin (25) extends to the inside of the galvanized steel wire armor layer (12).

6. The power cable with a large cross-section special-shaped conductor structure according to claim 5, characterized in that: A protective shell (26) is fixedly mounted on the top of the second splicing sleeve (22), a leakage current sensor (262) located in the inner cavity of the protective shell (26) is fixedly mounted on the top of the second splicing sleeve (22), a detection end of the leakage current sensor (262) is electrically connected to the top of the metal block (24), and a movable cover (261) is movably plugged into the top of the protective shell (26).

7. The power cable with a large cross-section special-shaped conductor structure according to claim 6, characterized in that: An inner support plate (263) is fixedly mounted on the right side of the inner wall of the protective shell (26), a flashing surface light source (264) is fixedly mounted on the top of the inner support plate (263), and the leakage current sensor (262) is connected to the flashing surface light source (264) via an electrical signal between an external controller and the external controller.

Images