Low-temperature protection cable for data transmission

Abstract

The utility model relates to a low-temperature protection cable for data transmission, which comprises a plurality of leads, an insulating layer, a shielding layer, an inner protection layer, a heat preservation layer and an outer protection layer, the insulating layer is wrapped outside the leads, all the leads are wrapped in the shielding layer, the inner protection layer, the heat preservation layer and the outer protection layer are sequentially arranged outside the shielding layer, and the heat preservation layer is wrapped in the outer protection layer. A cavity is formed between the inner protection layer and the heat preservation layer, a plurality of supporting rings are evenly and perpendicularly arranged on the inner side of the cavity in the axial direction of the wire, a plurality of positioning holes are formed in the supporting rings in the radial direction and penetrate through the front surface and the rear surface, and heating wires penetrate through the inner sides of the positioning holes and are parallel to the wire. According to the utility model, the thermal insulation layer, the thermal insulation layer and the cavity between the inner protective layer and the thermal insulation layer are additionally arranged in the cable structure, so that the thermal insulation effect of the cable in a low-temperature environment is remarkably improved, the internal wires are effectively prevented from being damaged or broken due to low temperature, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a low-temperature protection cable for data transmission. Background Art

[0002] With the rapid development of optical communication technology, optical cables have been widely used in the backbone network and inter-office relay lines of my country's wired communication network, and the entry of optical fiber into the access network has become an inevitable trend. However, the cost of laying optical cables is too high, and the cost of joints and terminal optical-electrical conversion is expensive. Therefore, for a long time before the popularization of optical fiber, the user lines of the access network will still be dominated by metal cables. Metal cables mainly include all-plastic cables, coaxial cables and data cables. Among them, data cables are currently the most ideal transmission media for broadband access networks. They have the advantages of low manufacturing cost, simple structure, good scalability, and easy network upgrade. They are mainly used for building integrated wiring, community computer integrated wiring, etc.

[0003] When existing data transmission cables work in a low-temperature environment, their internal protective structures do not have a good thermal insulation effect, which can easily cause internal wires or metal materials to break, thereby affecting the service life of the cables. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a low-temperature protection cable for data transmission in view of the above shortcomings.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A low-temperature protection cable for data transmission, comprising a plurality of conductors, an insulating layer, a shielding layer, an inner protective layer, a thermal insulation layer and an outer protective layer, wherein the outer sides of the plurality of conductors are coated with an insulating layer, and all the conductors are coated in the shielding layer; the outer sides of the shielding layer are sequentially provided with an inner protective layer, a thermal insulation layer and an outer protective layer; a cavity is formed between the inner protective layer and the thermal insulation layer; a plurality of support rings are uniformly and vertically arranged along the axial direction of the conductor on the inner side of the cavity; a plurality of positioning holes are arranged radially through the front and rear surfaces of the support rings; a heating wire is penetrated through the inner side of the positioning hole, and the heating wire is parallel to the conductor.

[0007] Furthermore, the distance between two adjacent support rings is 1.5 or 2 times the bending radius of the cable, the cross section of the support ring is I-shaped, and the support ring is made of aluminum alloy.

[0008] Furthermore, the number of the heating wires is 3-5, and the material of the heating wires is copper-nickel alloy wire.

[0009] Furthermore, the shielding layer is made of galvanized braided copper tape.

[0010] Furthermore, the inner protective layer is made of polypropylene.

[0011] Furthermore, the material of the heat insulation layer is polyurethane rubber.

[0012] Furthermore, the material of the outer protective layer is cross-linked polyethylene.

[0013] After the utility model adopts the above technical solutions, compared with the prior art, it has the following advantages:

[0014] By adding a heat insulation layer, a heat preservation layer and a cavity between the inner protective layer and the heat preservation layer in the cable structure, the utility model significantly improves the heat preservation effect of the cable in a low-temperature environment, effectively prevents the internal wires from being damaged or broken due to low temperature, and prolongs the service life of the cable; the multiple support rings and the heating wires thereon arranged in the cavity can keep the internal temperature of the cable within a certain range under low-temperature conditions, further enhancing the low-temperature adaptability of the cable. This intelligent temperature control mechanism ensures the stability and reliability of data transmission; by adjusting the position and quantity of the positioning holes, the position and distribution of the heating wires can be flexibly adjusted to adapt to cables of different lengths and different low-temperature environment requirements.

[0015] The following combines the drawings and embodiments to elaborate on the utility model in detail. Description of the Drawings

[0016] Figure 1 It is a cross-sectional structure diagram of the utility model when the number of heating wires is three;

[0017] Figure 2 It is a partial internal structure sectional view of the utility model;

[0018] Figure 3 It is a cross-sectional structure diagram of the utility model when the number of heating wires is four;

[0019] Figure 4 It is a cross-sectional structure diagram of the utility model when the number of heating wires is five;

[0020] Figure 5 It is a schematic diagram of the positions of the support ring and the positioning holes.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Conducting wire; 2. Insulating layer; 3. Shielding layer; 4. Inner protective layer; 5. Heat preservation layer; 6. Outer protective layer; 7. Cavity; 8. Support ring; 9. Heating wire; 10. Main positioning hole; 11. Subordinate positioning hole. Specific Embodiments

[0023] The following describes the principle and features of the utility model with reference to the drawings. The examples given are only used to explain the utility model and are not intended to limit the scope of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] like Figures 1-5 As shown, a low-temperature protection cable for data transmission includes multiple conductors 1, an insulating layer 2, a shielding layer 3, an inner protective layer 4, a thermal insulation layer 5 and an outer protective layer 6, the multiple conductors 1 are coated with an insulating layer 2 on the outside, all the conductors 1 are coated in the shielding layer 3, the inner protective layer 4, the thermal insulation layer 5 and the outer protective layer 6 are sequentially arranged on the outside of the shielding layer 3, a cavity 7 is formed between the inner protective layer 4 and the thermal insulation layer 5, a plurality of support rings 8 are uniformly and vertically arranged on the inner side of the cavity 7 along the axial direction of the conductor 1, a plurality of positioning holes are arranged on the support ring 8 along the radial direction through the front and rear surfaces, a heating wire 9 is penetrated inside the positioning hole, and the heating wire 9 is parallel to the conductor 1.

[0026] As an implementation manner, the distance between two adjacent support rings 8 is 1.5 or 2 times of the bending radius of the cable, the cross section of the support ring 8 is I-shaped, and the support ring 8 is made of aluminum alloy.

[0027] As an implementation manner, the number of the heating wires 9 is 3-5, and the material of the heating wires 9 is copper-nickel alloy wire.

[0028] As an implementation manner, the shielding layer 3 is made of galvanized braided copper tape.

[0029] As an implementation mode, the inner protective layer 4 is made of polypropylene.

[0030] As an implementation manner, the material of the thermal insulation layer 5 is polyurethane rubber.

[0031] As an implementation mode, the outer protective layer 6 is made of cross-linked polyethylene.

[0032] After the two ends of the utility model are encapsulated, each end forms a data transmission end and a heating wire 9 power-on end respectively. The two ends of the data transmission end where the conductor 1 is located are electrically connected to the input end and the output end of the external data end respectively, and the two ends of the heating wire 9 power-on end where the heating wire 9 is located are electrically connected to the external temperature control device respectively.

[0033] The working process of the present utility model: Select the cables of an appropriate number of heating wires 9 according to the temperature of the external environment, set the heating temperature of the heating wire 9 according to the external environmental temperature. When the cable is powered on, then the heating wire 9 heats the air inside the cavity 7, so that a constant temperature area is formed on the inner side of the cavity 7, isolating the external low temperature and protecting the internal materials of the cable.

[0034] The above is an example of the best implementation mode of the present utility model, and the parts not described in detail are all common general knowledge of those skilled in the art. The protection scope of the present utility model shall be subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present utility model is also within the protection scope of the present utility model.

Claims

1. A low temperature protection cable for data transmission, characterized in that: The invention comprises a plurality of conductors (1), an insulating layer (2), a shielding layer (3), an inner protective layer (4), a thermal insulation layer (5) and an outer protective layer (6); the outer sides of the plurality of conductors (1) are coated with an insulating layer (2); all the conductors (1) are coated in the shielding layer (3); the outer sides of the shielding layer (3) are provided with an inner protective layer (4), a thermal insulation layer (5) and an outer protective layer (6) in sequence; a cavity (7) is formed between the inner protective layer (4) and the thermal insulation layer (5); a plurality of support rings (8) are uniformly and vertically arranged inside the cavity (7) along the axial direction of the conductor (1); a plurality of positioning holes are arranged on the support ring (8) through the front and rear surfaces in a radial direction; a heating wire (9) is passed through the inner sides of the positioning holes; the heating wire (9) is parallel to the conductor (1).

2. A low temperature protection cable for data transmission according to claim 1, characterized in that: The distance between two adjacent support rings (8) is 1.5 or 2 times the bending radius of the cable; the cross section of the support ring (8) is I-shaped; and the support ring (8) is made of aluminum alloy.

3. A low temperature protection cable for data transmission according to claim 1, characterized in that: The number of the heating wires (9) is 3-5, and the material of the heating wires (9) is copper-nickel alloy wire.

4. A low temperature protection cable for data transmission according to claim 1, characterized in that: The shielding layer (3) is made of galvanized braided copper tape.

5. A low temperature protection cable for data transmission according to claim 1, characterized in that: The material of the inner protective layer (4) is polypropylene.

6. A low temperature protection cable for data transmission according to claim 1, characterized in that: The material of the thermal insulation layer (5) is polyurethane rubber.

7. A low temperature protection cable for data transmission according to claim 1, characterized in that: The material of the outer protective layer (6) is cross-linked polyethylene.

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