Control cable for compressed air energy storage power generation

Abstract

The utility model belongs to control cable technical field, concretely is a kind of control cable for gas compression energy storage power generation, including conductor and the insulating layer shaped in the outside of conductor, the conductor is equipped with several roots, the insulating layer is XLPE shaped component, the outside of adjacent insulating layer is equipped with support strip, the support strip inside is embedded with reinforcing rib, the insulating layer and support strip outside are pasted with inner shield layer along the axial direction, outer shield layer is woven in the outside of inner shield layer;It can be understood that the utility model replaces traditional PVC with XLPE insulating layer, solves the insulation failure problem of gas compression energy storage system high-temperature area, ensures cable to keep high insulation resistance under harsh environment and prolongs life, guarantees signal stable transmission;Its double-layer shielding structure effectively improves shielding effect, and inner shield layer lap joint design simplifies process while ensuring effect;In addition, the design of support strip and internal reinforcing rib enhances cable toughness and tensile resistance, and its connecting place also has buffering energy-absorbing effect.

Description

Technical Field

[0001] This utility model belongs to the field of control cable technology, and in particular relates to a control cable for compressed air energy storage power generation. Background Technology

[0002] In hydraulic gas energy storage and power generation systems, control cables bear the heavy responsibility of transmitting critical sensor signals (such as pressure, temperature, and position) and actuator commands (such as valve opening and closing, and pump start and stop). Their performance directly affects the stability, efficiency, and safety of the system. However, the performance of existing conventional cables is significantly insufficient under such harsh conditions. 1. High-temperature failure: Traditional PVC insulation layers soften easily above 80℃, leading to a decrease in insulation resistance; 2. Electromagnetic interference: The shielding efficiency of a single shielding structure decreases significantly under high-frequency interference from the frequency converter; 3. Insufficient toughness and strength: In complex wiring layouts, traditional cables have insufficient tensile strength and may bend due to their lack of toughness. To address the aforementioned issues, this application proposes a control cable for compressed air energy storage power generation. Utility Model Content

[0003] The purpose of this invention is to provide a control cable for compressed air energy storage and power generation, which solves the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a control cable for compressed air energy storage and power generation, comprising a conductor and an insulation layer formed on the outside of the conductor. The conductor has several strands, and the insulation layer is an XLPE molded component. A support strip is provided on the outer side of the adjacent insulation layer, and a reinforcing rib is embedded inside the support strip. An inner shielding layer is axially attached to the outside of the insulation layer and the support strip. An outer shielding layer is woven outside the inner shielding layer. A flame-retardant layer is extruded and covered outside the outer shielding layer, and an outer sheath is extruded and covered outside the flame-retardant layer.

[0005] Furthermore, the support bar has an energy-absorbing groove formed inside, and the inner wall of the energy-absorbing groove has circumferentially distributed support ribs that support the reinforcing ribs. An interlocking groove is also provided on the outer side of the energy-absorbing groove.

[0006] Furthermore, the inner side of the support bar has two arc-shaped grooves that fit with the outer side of the insulation layer, and the outer side of the support bar has an arc-shaped surface that matches the inner side of the inner shielding layer.

[0007] Furthermore, the inner shielding layer is composed of several copper sheets distributed circumferentially, with adjacent copper sheets overlapping each other, and the overlap rate is 15% to 20%.

[0008] Furthermore, the outer shielding layer is woven from tin-plated copper wire and the inner shielding layer is tightly attached to the outside of the insulating layer and the support strip.

[0009] Furthermore, the support strips and reinforcing ribs are continuously arranged along the axial direction, and are multiple sets evenly distributed circumferentially in the cable.

[0010] This utility model has the following beneficial effects: This invention replaces traditional PVC material with XLPE insulation layer to solve the problem of insulation failure in high-temperature areas of compressed air energy storage system, so that the cable can maintain high insulation resistance in harsh environments, and its lifespan is improved compared with traditional cables, ensuring stable transmission of control signals in hot areas. The double-layer shielding structure adopted in this utility model effectively improves the shielding effect, and the overlapping setting of the inner shielding layer simplifies the process while ensuring the shielding effect. This invention enhances the cable's toughness and tensile strength by incorporating support bars and internal reinforcing ribs, while the connection between the support bars and reinforcing ribs also provides a buffering and energy-absorbing effect.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a partially disassembled structure; Figure 2 This is a schematic diagram of the cable cross-section; Figure 3 This is an enlarged structural diagram of the support bar; Figure 4 This is a schematic diagram of the copper strip overlap structure in the inner shield; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Conductor; 2. Insulation layer; 3. Support bar; 31. Arc groove; 32. Energy absorption groove; 33. Support rib; 34. Fitting groove; 4. Reinforcing rib; 5. Inner shielding layer; 6. Outer shielding layer; 7. Flame retardant layer; 8. Outer sheath. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] Please see Figures 1-4 As shown, this utility model is a control cable for compressed air energy storage and power generation, including a conductor 1 and an insulation layer 2 formed on the outside of the conductor 1. The conductor 1 has several strands and is evenly distributed around the circumference. Adjacent conductors 1 are connected to each other through the insulation layer 2 at the center of the cable. The insulation layer 2 is an XLPE molded component. XLPE material is heat resistant to 125℃, while existing PVC material softens above 80℃, reducing insulation performance. XLPE material ensures the heat resistance reliability of the cable in high-temperature environments.

[0017] Specifically, a support strip 3 is provided on the outer side of the adjacent insulating layer 2, a reinforcing rib 4 is embedded inside the support strip 3, an energy-absorbing groove 32 is formed inside the support strip 3, and a circumferentially distributed support rib 33 is formed on the inner wall of the energy-absorbing groove 32 to support the reinforcing rib 4. An interlocking groove 34 is also provided on the outer side of the energy-absorbing groove 32.

[0018] Furthermore, the inner side of the support strip 3 has two arc-shaped grooves 31 that fit into the outer side of the insulating layer 2, and the outer side of the support strip 3 has an arc-shaped surface that matches the inner side of the inner shielding layer 5.

[0019] Specifically, an inner shielding layer 5 is axially bonded to the outside of the insulating layer 2 and the support strip 3, an outer shielding layer 6 is woven outside the inner shielding layer 5, a flame-retardant layer 7 is extruded and wrapped around the outside of the outer shielding layer 6, and an outer sheath 8 is extruded and wrapped around the outside of the flame-retardant layer 7.

[0020] Furthermore, the inner shielding layer 5 is composed of several copper sheets distributed in a circle, with adjacent copper sheets overlapping each other, and the overlap rate is 15% to 20%. The overlapping arrangement not only facilitates the laying of copper sheets, but also ensures the shielding effect.

[0021] Furthermore, the outer shielding layer 6 is woven from tin-plated copper wire and the inner shielding layer 5 is tightly attached to the outside of the insulation layer 2 and the support strip 3. The braiding density of the outer shielding layer 6 is ≥85%, which strengthens the cable while providing shielding.

[0022] Specifically, the support strip 3 and the reinforcing rib 4 are continuously arranged along the axial direction and are multiple sets evenly distributed around the circumference in the cable. The support strip 3 improves the cable's toughness, and the reinforcing rib 4 strengthens the cable's strength. The two interact to ensure the cable's structural strength and flexibility.

[0023] Understandably, this utility model uses XLPE insulation layer to replace traditional PVC, which solves the problem of insulation failure in high-temperature areas of compressed air energy storage systems, ensuring that the cable maintains high insulation resistance and extends its lifespan in harsh environments, and ensuring stable signal transmission. Its double-layer shielding structure effectively improves the shielding effect, and the overlapping design of the inner shielding layer simplifies the process while ensuring the effect. In addition, the design of support bars and internal reinforcing ribs enhances the cable's toughness and tensile strength, and its connection points also have a buffering and energy absorption effect.

[0024] One specific application of this embodiment is as follows: the conductor 1 is externally covered with an insulation layer 2 of cross-linked polyethylene material. After multiple conductors 1 are joined together, a support strip 3 is added to the outside of the joint of two adjacent conductors 1. The reinforcing rib 4 is inserted into the energy absorption groove 32 through the interlocking groove 34 and is located in the middle of the circumferentially distributed support rib 33. The copper strip on the inner shielding layer 5 forms a wrap around the conductor 1 and the support strip 3 with an overlap rate of 15% to 20%. The outer shielding layer 6 is woven from tin-plated copper wire. The flame retardant layer 7 is extruded and covered on the outside of the inner shielding layer 5. The outer sheath 8 is made of polyurethane material and is extruded and covered on the outside of the flame retardant layer 7.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A control cable for compressed air energy storage and power generation, comprising a conductor (1) and an insulation layer (2) formed on the outside of the conductor (1), wherein the conductor (1) is provided with a plurality of strands, characterized in that: The insulating layer (2) is an XLPE molded component. A support strip (3) is provided on the outer side of the adjacent insulating layer (2). A reinforcing rib (4) is embedded inside the support strip (3). An inner shielding layer (5) is attached to the outer side of the insulating layer (2) and the support strip (3) along the axial direction. An outer shielding layer (6) is woven on the outer side of the inner shielding layer (5). A flame-retardant layer (7) is extruded and covered on the outer side of the outer shielding layer (6). An outer sheath (8) is extruded and covered on the outer side of the flame-retardant layer (7).

2. The control cable for compressed air energy storage and power generation according to claim 1, characterized in that: The support bar (3) has an energy-absorbing groove (32) inside. The inner wall of the energy-absorbing groove (32) has circumferentially distributed support ribs (33) that support the reinforcing ribs (4). The outer side of the energy-absorbing groove (32) also has an interlocking groove (34).

3. The control cable for compressed air energy storage and power generation according to claim 1, characterized in that: The inner side of the support bar (3) has two arc-shaped grooves (31) that fit with the outside of the insulating layer (2), and the outer side of the support bar (3) has an arc-shaped surface that matches the inner side of the inner shielding layer (5).

4. The control cable for compressed air energy storage and power generation according to claim 1, characterized in that: The inner shielding layer (5) is composed of several copper sheets distributed in a circle, with adjacent copper sheets overlapping each other, and the overlap rate is 15% to 20%.

5. The control cable for compressed air energy storage and power generation according to claim 1, characterized in that: The outer shielding layer (6) is woven from tin-plated copper wire and the inner shielding layer (5) is tightly attached to the outside of the insulating layer (2) and the support strip (3).

6. The control cable for compressed air energy storage and power generation according to claim 1, characterized in that: The support bar (3) and the reinforcing rib (4) are both continuously arranged along the axial direction, and are multiple sets evenly distributed around the circumference in the cable.

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