A kind of plastic insulated control cable resistant to freezing and cracking

Abstract

The utility model relates to the technical field of cables, and in particular to a plastic insulated control cable that is resistant to freezing and cracking. It is mainly aimed at the problem that cables may freeze and crack in cold environments, resulting in equipment shutdown, production interruption or data loss, causing economic losses and production delays, and proposes the following technical solutions: including a control core for transmitting data signals; a power core for transmitting electric energy distributed on the outside of the control core in an annular array; a sheath wrapped around the control core and the outside of the power core, an outer filling layer is filled in the gap between the control core and the power core located on the inner side of the sheath, an outer shielding layer is arranged on the outside of the sheath, a partition layer is arranged around the outer periphery of the outer shielding layer, and an armor layer is arranged on the outside of the partition layer. The utility model can be used normally in a low temperature environment, and its surface will not crack, thereby ensuring the normal operation of the equipment and preventing problems such as production interruption or data loss.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a frost-cracking-resistant plastic insulation control cable. Background Art

[0002] Control cables are cables used to transmit electrical energy, signals or data, and are used to connect various control devices, sensors, actuators, monitors and other equipment. They are commonly used in automation systems, industrial control systems, mechanical equipment, electrical equipment and various other applications. In cold environments, cables may freeze and crack, resulting in cracks or damage to the insulation layer, which in turn leads to electrical failures or short circuits. This may cause problems such as equipment downtime, production interruptions or data loss, resulting in economic losses and production delays. In view of this, the utility model proposes a plastic insulated control cable that is resistant to freezing and cracking. Utility Model Content

[0003] The utility model aims to propose a frost-proof plastic insulated control cable in view of the problem in the background technology that cables may freeze and crack in a cold environment, resulting in equipment shutdown, production interruption or data loss, bringing economic losses and production delays.

[0004] The technical solution of the utility model is as follows: a frost-cracking-resistant plastic insulated control cable, comprising a control core for transmitting data signals; a power core for transmitting electric energy distributed in a ring array on the outside of the control core; a sheath wrapped around the outside of the control core and the power core, an outer filling layer filled in the gap between the control core and the power core located on the inner side of the sheath, an outer shielding layer is arranged on the outside of the sheath, a separation layer is wound around the outer periphery of the outer shielding layer, an armor layer is arranged on the outside of the separation layer, and an outer insulating layer is arranged on the outside of the armor layer; the outer filling layer is made of a polyethylene material containing fine quartz powder or aluminum hydroxide as a filling material, and the outer insulating layer is made of a cross-linked polyethylene material.

[0005] Optionally, the control line core includes a control conductor, a control insulation layer, a control shielding layer, an inner insulation layer, a reinforced core wire, and an inner filling layer. Multiple groups of the control conductors are distributed in a ring array, and a control insulation layer is provided on the outside of each group of the control conductors. The control insulation layer is sleeved on the outside of the control shielding layer, and the inner insulation layer is sleeved on the outside of multiple groups of control shielding layers. The reinforced core wire is arranged at the center position of the multiple groups of control conductors, and the gap between the control shielding layer and the reinforced core wire located on the inner side of the inner insulation layer is filled with the inner filling layer.

[0006] Optionally, the power line core includes a first power conductor, a second power conductor, a first power insulation layer, a first power shielding layer, a second power insulation layer, and a second power shielding layer. The number of the first power conductors and the second power conductors is the same. The outer ring of the first power conductor is provided with a first power insulation layer, and the outer side of the first power insulation layer is provided with a first power shielding layer. The outer ring of the second power conductor is provided with a second power insulation layer, and the outer side of the second power insulation layer is provided with a second power shielding layer.

[0007] Optionally, the armor layer is woven from multiple strands of steel wires.

[0008] Optionally, the control insulation layer and the inner insulation layer are both made of fluororubber material.

[0009] Optionally, the inner filling layer is made of mineral wool material.

[0010] Optionally, the first power insulation layer and the second power insulation layer are both made of polytetrafluoroethylene material.

[0011] Optionally, the first power conductor and the second power conductor are both made of copper with a purity of more than 99.9%.

[0012] Optionally, the outer shielding layer, the control shielding layer, the first power shielding layer and the second power shielding layer are all woven from copper wires or aluminum wires.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] The utility model uses the materials of the outer filling layer and the inner insulating layer to prevent the heat from affecting the control conductor after the first power conductor and the second power conductor are energized, thereby the heat is diffused outward, the overall temperature of the cable is increased, and the cable is prevented from freezing and cracking in a low temperature environment;

[0015] Furthermore, through the setting of the outer insulation layer, the cross-linked polyethylene material used has excellent cold resistance and can maintain flexibility at lower temperatures. It is not easy to freeze and crack in cables used in cold areas or in low temperature environments.

[0016] In summary, the utility model can be used normally in a low temperature environment without cracking on the surface, thereby ensuring the normal operation of the equipment and preventing problems such as production interruption or data loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a plastic insulated control cable that is resistant to freezing and cracking;

[0018] Figure 2 yes Figure 1Schematic diagram of the cross-sectional structure.

[0019] Reference numerals:

[0020] 1. Control core; 2. Power core; 3. Coating layer; 4. Outer filling layer; 5. Outer shielding layer; 6. Separation layer; 7. Armor layer; 8. Outer insulation layer;

[0021] 11. Control conductor; 12. Control insulation layer; 13. Control shielding layer; 14. Inner insulation layer; 15. Reinforced core wire; 16. Inner filling layer;

[0022] 21. First power conductor; 22. Second power conductor; 23. First power insulation layer; 24. First power shielding layer; 25. Second power insulation layer; 26. Second power shielding layer. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0025] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example

[0029] like Figure 1 and Figure 2 As shown, the utility model proposes a kind of anti-freeze cracking plastic insulated control cable, comprising a control core 1 for transmitting data signals, the control core 1 comprising a control conductor 11, a control insulation layer 12, a control shielding layer 13, an inner insulation layer 14, a reinforcing core wire 15, and an inner filling layer 16, and multiple groups of control conductors 11 are distributed in a ring array for transmitting control signals. A control insulation layer 12 is arranged on the outside of each group of control conductors 11 for insulation to prevent multiple groups of control conductors 11 from contacting each other and short-circuiting. A control shielding layer 13 is sleeved on the outside of the control insulation layer 12 to prevent the control conductor 11 from being disturbed by an external magnetic field and ensure the stable transmission of the control signal in the control conductor 11. The inner insulation layer 14 is sleeved on the outside of multiple groups of control shielding layers 13 to prevent external heat from entering the control core 1 and ensure that the control conductor 11 works at a suitable temperature. The control insulation layer 12 and the inner insulation layer 14 are both made of fluororubber material, which has good thermal insulation performance and can effectively isolate heat conduction. In a high temperature environment, fluororubber can provide reliable thermal insulation protection and help prevent the influence of heat on the control conductor 11. The reinforcing core wire 15 is arranged at the center of the multiple control conductors 11 to strengthen the structure and improve the tensile strength of the cable. The gap between the control shielding layer 13 and the reinforcing core wire 15 located inside the inner insulating layer 14 is filled with an inner filling layer 16. The inner filling layer 16 is made of mineral wool material and has excellent thermal insulation performance. It can effectively isolate heat and slow down heat propagation. It provides additional thermal insulation protection while filling the gap to prevent the control conductor 11 from being affected by the heat generated when the first power conductor 21 and the second power conductor 22 are energized.

[0030] Furthermore, the cable comprises a power core 2 for transmitting electric energy in a circular array distributed outside the control core 1, and the power core 2 comprises a first power conductor 21, a second power conductor 22, a first power insulation layer 23, a first power shielding layer 24, a second power insulation layer 25, and a second power shielding layer 26. The number of the first power conductors 21 and the second power conductors 22 is the same, and the first power conductors 21 and the second power conductors 22 are both made of copper with a purity of more than 99.9%. Such high-purity copper is usually called electrolytic copper, which has an extremely low impurity content and can provide excellent conductivity and stability. The outer ring of the first power conductor 21 is provided with a first power insulation layer 23, and the outer side of the first power insulation layer 23 is provided with a first power shielding layer 24, and the outer ring of the second power conductor 22 is provided with a second power insulation layer 25, and the outer side of the second power insulation layer 25 is provided with a second power shielding layer 26. The first power insulation layer 23 and the second power insulation layer 25 are both made of polytetrafluoroethylene material, which has excellent thermal conductivity and excellent high temperature resistance. Its thermal conductivity is low, but it still maintains stable performance at high temperatures, so that the heat generated by the first power conductor 21 and the second power conductor 22 when energized is dissipated outward, and its shape will not change due to the increase in temperature. The first power shielding layer 24 and the second power shielding layer 26 are set to different colors to facilitate wiring operations.

[0031] Furthermore, the above-mentioned cable also includes a coating layer 3 wrapped around the outside of the control core 1 and the power core 2, and the coating layer 3 plays a role in fixing the position of the control core 1 and the power core 2. The gap between the control core 1 and the power core 2 located inside the coating layer 3 is filled with an outer filling layer 4, and the outer filling layer 4 is made of polyethylene material containing fine quartz powder or aluminum hydroxide as a filling material, and has excellent flame retardant and thermal diffusion properties. It is used to diffuse the heat generated by the first power conductor 21 and the second power conductor 22 when energized to the outside, increase the overall temperature of the cable, and prevent the surface from freezing and cracking. An outer shielding layer 5 is provided on the outside of the coating layer 3, and a separation layer 6 is provided around the outer periphery of the outer shielding layer 5 to separate the outer shielding layer 5 from the armor layer 7 to prevent mutual wear. An armor layer 7 is provided on the outside of the separation layer 6. The armor layer 7 is woven with multiple strands of steel wire, has good flexibility and tensile resistance, and can effectively protect the cable from external damage and tensile force. The outer side of the armor layer 7 is provided with an outer insulating layer 8, which is made of cross-linked polyethylene material, has excellent cold resistance, can maintain flexibility at lower temperatures, and is not prone to freezing and cracking in cables used in cold areas or in low-temperature environments. The outer shielding layer 5, the control shielding layer 13, the first power shielding layer 24, and the second power shielding layer 26 in the above-mentioned cable are all woven with copper wire or aluminum wire, have good flexibility and conductivity, and can provide an effective electromagnetic shielding effect to prevent electromagnetic interference from affecting the operation of the cable.

[0032] In this embodiment, when in use, multiple groups of control conductors 11 distributed in an annular array transmit control signals, and the first power conductor 21 and the second power conductor 22 have extremely low impurity content, which can provide excellent conductivity and stability for transmitting electric energy. The control insulation layer 12 and the inner insulation layer 14 have good thermal insulation performance, which can effectively isolate heat conduction, provide reliable thermal insulation protection in a high temperature environment, and help prevent the influence of heat on the control conductor 11. The reinforcing core wire 15 strengthens the structure and improves the tensile strength of the cable. The inner filling layer 16 has excellent thermal insulation performance, which can effectively isolate heat and slow down the spread of heat. While filling the gap, it provides additional thermal insulation protection to prevent the control conductor 11 from being affected by the heat generated when the first power conductor 21 and the second power conductor 22 are energized. The first power insulation layer 23 and the second power insulation layer 25 have excellent thermal conductivity and excellent high temperature resistance. Its thermal conductivity is low, but it still maintains stable performance at high temperatures, so that the heat generated when the first power conductor 21 and the second power conductor 22 are energized can be dissipated outward, and its shape will not change due to the increase in temperature. The outer filling layer 4 has excellent flame retardant and thermal diffusion properties, and is used to diffuse the heat generated by the first power conductor 21 and the second power conductor 22 when energized, thereby increasing the overall temperature of the cable and preventing the surface from freezing and cracking. The separation layer 6 separates the outer shielding layer 5 and the armor layer 7 to prevent mutual wear. The armor layer 7 has good flexibility and tensile strength, and can effectively protect the cable from external damage and tensile force. The outer insulating layer 8 has excellent cold resistance and can maintain flexibility at lower temperatures. It is not easy to freeze and crack in cables used in cold areas or in low-temperature environments. The outer shielding layer 5, the control shielding layer 13, the first power shielding layer 24 and the second power shielding layer 26 all have good flexibility and conductivity, and can provide an effective electromagnetic shielding effect to prevent electromagnetic interference from affecting the operation of the cable.

[0033] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A frost-proof plastic insulated control cable, characterized in that: include: A control line core (1) for transmitting data signals; A power line core (2) for transmitting electric energy and distributed in an annular array outside the control line core (1); A coating layer (3) wrapped around the outside of the control core (1) and the power core (2); an outer filling layer (4) is filled in the gap between the control core (1) and the power core (2) located inside the coating layer (3); an outer shielding layer (5) is arranged on the outside of the coating layer (3); a separation layer (6) is arranged around the outer periphery of the outer shielding layer (5); an armor layer (7) is arranged on the outside of the separation layer (6); and an outer insulating layer (8) is arranged on the outside of the armor layer (7); The outer filling layer (4) is made of a polyethylene material containing fine quartz powder or aluminum hydroxide as a filling material, and the outer insulating layer (8) is made of a cross-linked polyethylene material.

2. A frost crack resistant plastic insulated control cable according to claim 1, characterized in that: The control line core (1) comprises a control conductor (11), a control insulation layer (12), a control shielding layer (13), an inner insulation layer (14), a reinforcing core wire (15), and an inner filling layer (16); a plurality of groups of the control conductors (11) are distributed in a ring array; a control insulation layer (12) is arranged on the outside of each group of the control conductors (11); a control shielding layer (13) is sleeved on the outside of the control insulation layer (12); the inner insulation layer (14) is sleeved on the outside of the plurality of groups of the control shielding layers (13); the reinforcing core wire (15) is arranged at the center of the plurality of groups of the control conductors (11); and the gap between the control shielding layer (13) and the reinforcing core wire (15) located on the inner side of the inner insulation layer (14) is filled with the inner filling layer (16).

3. A frost-cracking resistant plastic insulated control cable according to claim 2, characterized in that: The power line core (2) comprises a first power conductor (21), a second power conductor (22), a first power insulation layer (23), a first power shielding layer (24), a second power insulation layer (25), and a second power shielding layer (26); the number of the first power conductors (21) and the number of the second power conductors (22) are the same; the outer ring of the first power conductor (21) is provided with the first power insulation layer (23); the outer side of the first power insulation layer (23) is provided with the first power shielding layer (24); the outer ring of the second power conductor (22) is provided with the second power insulation layer (25); the outer side of the second power insulation layer (25) is provided with the second power shielding layer (26).

4. The anti-freeze cracking plastic insulated control cable according to claim 1, characterized in that: The armor layer (7) is braided from multiple strands of steel wires.

5. The anti-freeze cracking plastic insulated control cable according to claim 2, characterized in that: The control insulation layer (12) and the inner insulation layer (14) are both made of fluororubber material.

6. A frost-cracking resistant plastic insulated control cable according to claim 2, characterized in that: The inner filling layer (16) is made of mineral wool material.

7. The anti-freeze cracking plastic insulated control cable according to claim 3, characterized in that: The first power insulation layer (23) and the second power insulation layer (25) are both made of polytetrafluoroethylene material.

8. The anti-freeze cracking plastic insulated control cable according to claim 3, characterized in that: The first power conductor (21) and the second power conductor (22) are both made of copper with a purity of more than 99.9%.

9. The anti-freeze cracking plastic insulated control cable according to claim 3, characterized in that: The outer shielding layer (5), the control shielding layer (13), the first power shielding layer (24) and the second power shielding layer (26) are all woven from copper wires or aluminum wires.

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