Oil-resistant cable

Abstract

The utility model belongs to the technical field of cables, and discloses an oil-resistant cable, which comprises a sheath, three main line bodies are annularly arranged in the sheath at equal intervals, a compression-resistant assembly is arranged between the sheath and the three main line bodies, the compression-resistant assembly comprises an inner compression-resistant strip sleeved at the center of the interior of the sheath, and an outer compression-resistant strip sleeved at the center of the interior of the sheath. The three main line bodies are sleeved with an inner filling layer, an outer filling layer is arranged between the sheath and the inner filling layer, and two sets of outer compression-resistant strips are annularly arranged in the outer filling layer in a sleeving mode at equal intervals. According to the utility model, through the arrangement of the compression-resistant assembly and the arrangement of the inner compression-resistant strip, the inner filling layer, the outer filling layer and the two groups of outer compression-resistant strips between the sheath and the three main line bodies, when the cable is extruded by an external force, the external pressure of the three main line bodies can be greatly reduced, and the compression resistance of the cable is effectively improved; and the service life and the safety of the cable are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable wires, and particularly relates to an oil-resistant cable. Background Art

[0002] An oil-resistant cable is a specially designed cable, mainly used in occasions that need to resist the erosion of oily media such as grease, lubricating oil, and hydraulic oil. This type of cable usually has excellent oil resistance and can maintain stable electrical and mechanical properties in harsh industrial environments.

[0003] The Chinese patent discloses a cable (authorized announcement number CN204614531U), which includes a plurality of cable cores, a PP rope filling layer, a polyester filament braided layer, and an outer sheath. The cable core sequentially includes a plurality of conductors, color tapes, and a polyolefin inner sheath from inside to outside. A metal braided layer made of copper-plastic composite tape is provided between the conductors and color tapes in the cable core and between the polyester filament braided layer and the outer sheath;

[0004] Although it increases the anti-external interference performance of the cable by setting a metal braided layer in the cable core, it still has problems such as poor compressive resistance, easy damage, and lack of safety guarantee. Therefore, an oil-resistant cable is proposed. Content of the Utility Model

[0005] To solve the problems raised in the above background art, the utility model provides an oil-resistant cable.

[0006] To achieve the above object, the utility model provides the following technical solution: an oil-resistant cable, including a sheath, three main line bodies are annularly and equidistantly installed inside the sheath, and a compressive component is arranged between the sheath and the three main line bodies;

[0007] The compressive component includes an inner compressive strip sleeved at the center inside the sheath, and the inner compressive strip is in contact with the three main line bodies. An inner filling layer is sleeved outside the three main line bodies, an outer filling layer is arranged between the sheath and the inner filling layer, and two groups of outer compressive strips are annularly and equidistantly sleeved inside the outer filling layer.

[0008] Preferably, the main line body mainly consists of a metal shielding layer, an insulating layer, a main line shielding layer, and a conductor, and the insulating layer is sleeved inside the metal shielding layer.

[0009] Preferably, the main line shielding layer is sleeved inside the insulating layer, and the conductor is sleeved inside the main line shielding layer.

[0010] Preferably, a first steel wire armor layer is sleeved inside the sheath, and the outer filling layer is sleeved inside the first steel wire armor layer.

[0011] Preferably, a second steel wire armor layer is sleeved inside the outer filling layer, and the inner filling layer is sleeved inside the second steel wire armor layer.

[0012] Preferably, three auxiliary wire bodies are annularly and equidistantly sleeved inside the inner filling layer. The auxiliary wire body includes a ground wire shielding layer and a ground wire main body, and the ground wire main body is sleeved inside the ground wire shielding layer.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the setting of the compression resistance component of the present utility model, by arranging an inner compression resistance strip, an inner filling layer, an outer filling layer and two groups of outer compression resistance strips between the sheath and the three main wire bodies, when the cable is extruded by external force, the external pressure on the three main wire bodies can be greatly reduced, effectively improving the compression resistance of the cable and ensuring the service life and safety of the cable.

[0015] 2. By filling the first steel wire armor layer and the second steel wire armor layer inside the sheath of the present utility model, the cable can have the excellent characteristics of high tensile strength and continuous wire without breaking during swinging, thereby extending the service life of the cable and avoiding the occurrence of safety accidents caused by conductor fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is of the present utility model Figure 1 the enlarged structural schematic diagram at A in;

[0018] Figure 3 is a side view of the present utility model;

[0019] Figure 4 is a sectional view of the main wire body of the present utility model.

[0020] In the figure: 1. Sheath; 2. Main wire body; 201. Metal shielding layer; 202. Insulating layer; 203. Main wire shielding layer; 204. Conductor; 3. Inner compression resistance strip; 4. Auxiliary wire body; 401. Ground wire shielding layer; 402. Ground wire main body; 5. First steel wire armor layer; 6. Second steel wire armor layer; 7. Inner filling layer; 8. Outer filling layer; 9. Outer compression resistance strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] As Figures 1 to 4 shown, the present utility model provides an oil-resistant cable, which includes a sheath 1. The sheath 1 is made of a polymer material with a special formula and can effectively resist the penetration and corrosion of various oils and extend the service life of the cable. Three main line bodies 2 are installed annularly and equidistantly inside the sheath 1. The main line body 2 is mainly composed of a metal shielding layer 201, an insulating layer 202, a main line shielding layer 203, and a conductor 204. The metal shielding layer 201 can shield electromagnetic fields, provide grounding protection, limit the electric field distribution, prevent axial surface discharge, and serve as a current channel when a grounding or short-circuit fault occurs in the system, ensuring the safe and stable operation of the cable system and reducing the influence of external interference on its performance. The insulating layer 202 is sleeved inside the metal shielding layer 201. The insulating layer 202 is made of rubber material, which not only increases the wear resistance of the outer surface of the conductor 204 but also ensures the insulation performance of the conductor 204 during use. The main line shielding layer 203 is sleeved inside the insulating layer 202. The main line shielding layer 203 can shield, reduce signal leakage, improve the durability of the cable, and play a role in grounding protection. The conductor 204 is sleeved inside the main line shielding layer 203.

[0023] A compressive component is provided between the sheath 1 and the three main line bodies 2. The compressive component includes an inner compressive strip 3 sleeved at the center inside the sheath 1. The inner compressive strip 3 is a cylindrical long strip made of elastic rubber material, and it is in contact with the three main line bodies 2. An inner filling layer 7 is sleeved outside the three main line bodies 2. An outer filling layer 8 is provided between the sheath 1 and the inner filling layer 7. Both the inner filling layer 7 and the outer filling layer 8 are made of polytetrafluoroethylene material. Two groups of outer compressive strips 9 are sleeved annularly and equidistantly inside the outer filling layer 8. The outer compressive strips 9 are made of the same material as the inner compressive strip 3. By using the inner compressive strip 3, the inner filling layer 7, the outer filling layer 8, and the two groups of outer compressive strips 9, when the cable is extruded by external forces, the external pressure on the three main line bodies 2 can be greatly reduced, thereby ensuring the service life and safety of the cable.

[0024] The inner side of the sheath 1 is sleeved with a first steel wire armor layer 5. The outer filling layer 8 is sleeved on the inner side of the first steel wire armor layer 5. The inner side of the outer filling layer 8 is sleeved with a second steel wire armor layer 6. The inner filling layer 7 is sleeved inside the second steel wire armor layer 6. The first steel wire armor layer 5 and the second steel wire armor layer 6 endow the cable with high tensile strength and the excellent property of not breaking when swaying, thereby extending the service life of the cable and avoiding safety accidents caused by the fracture of the conductor 204.

[0025] Inside the inner filling layer 7, three auxiliary wire bodies 4 are annularly and equidistantly sleeved. The auxiliary wire body 4 includes a ground wire shielding layer 401 and a ground wire main body 402. The ground wire shielding layer 401 has the same material and function as the main wire shielding layer 203. The ground wire main body 402 is sleeved inside the ground wire shielding layer 401.

[0026] The working principle and process of the present utility model

[0027] Between the sheath 1 and the three main wire bodies 2, there are an inner compression bar 3, an inner filling layer 7, an outer filling layer 8 and two groups of outer compression bars 9. When the cable is extruded by external force, it can greatly reduce the external pressure on the three main wire bodies 2, thereby ensuring the service life and safety of the cable. At the same time, the sheath 1 is also filled with a first steel wire armor layer 5 and a second steel wire armor layer 6, which endow the cable with high tensile strength and the excellent property of not breaking when swaying, thereby extending the service life of the cable and avoiding safety accidents caused by the fracture of the conductor 204.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An oil-resistant cable, characterized in that: It includes a sheath (1), and three main line bodies (2) are installed annularly and equidistantly inside the sheath (1). A compression-resistant component is provided between the sheath (1) and the three main line bodies (2). The compression-resistant component includes an inner compression-resistant strip (3) sleeved at the center inside the sheath (1), and the inner compression-resistant strip (3) is in contact with the three main line bodies (2). An inner filling layer (7) is sleeved outside the three main line bodies (2). An outer filling layer (8) is provided between the sheath (1) and the inner filling layer (7). Two groups of outer compression-resistant strips (9) are sleeved annularly and equidistantly inside the outer filling layer (8).

2. The oil-resistant cable according to claim 1, characterized in that: The main line body (2) is mainly composed of a metal shielding layer (201), an insulating layer (202), a main line shielding layer (203), and a conductor (204). The insulating layer (202) is sleeved inside the metal shielding layer (201).

3. The oil-resistant cable according to claim 2, wherein: The main line shielding layer (203) is sleeved inside the insulating layer (202), and the conductor (204) is sleeved inside the main line shielding layer (203).

4. The oil-resistant cable according to claim 1, wherein: A first steel armor layer (5) is sleeved inside the sheath (1), and the outer filling layer (8) is sleeved inside the first steel armor layer (5).

5. The oil-resistant cable according to claim 1, wherein: A second steel armor layer (6) is sleeved inside the outer filling layer (8), and the inner filling layer (7) is sleeved inside the second steel armor layer (6).

6. The oil-resistant cable according to claim 1, characterized in that: Three auxiliary line bodies (4) are sleeved annularly and equidistantly inside the inner filling layer (7). The auxiliary line body (4) includes a ground wire shielding layer (401) and a ground wire main body (402). The ground wire main body (402) is sleeved inside the ground wire shielding layer (401).

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