A low temperature resistant cable

Abstract

The utility model discloses a low temperature resistant cable, belonging to the technical field of cables, comprising a plurality of circumferentially distributed main cores, an inner lining layer is arranged on the outer side of the main core, a filling layer is arranged between the inner lining layer and the main core; an armor layer is arranged on the outer layer of the inner lining layer, a ceramic powder layer is arranged on the outer layer of the armor layer, an insulation layer is arranged on the outer layer of the ceramic powder layer, and an outer sheath is arranged on the outer layer of the insulation layer. The utility model achieves the effect of low temperature resistance by adding a ceramic powder layer and utilizing ceramic, which is one of the most low temperature resistant materials; at the same time, the structure of the armor layer avoids damage under cold shrinkage, and effectively improves the low temperature resistance strength of the cable.

Description

Technical Field

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

[0002] Cables are wire products that transmit electrical energy, electrical signals, and realize electromagnetic energy conversion. During the use of existing cables, due to the use location and seasonal environment, once the ambient temperature is too low, the cables are prone to freezing, thereby reducing the transmission efficiency, and the cable skin is easily damaged by freezing, causing leakage and causing danger. Based on this, the utility model proposes a low-temperature resistant cable. Utility Model Content

[0003] The purpose of the utility model is to provide a low temperature resistant cable to solve the above mentioned problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a low-temperature resistant cable, comprising a plurality of circumferentially distributed main cores, wherein an inner lining layer is arranged on the outer side of the main core, and a filling layer is arranged between the inner lining layer and the main core; an armor layer is arranged on the outer layer of the inner lining layer, a ceramic powder layer is arranged on the outer layer of the armor layer, a heat preservation layer is arranged on the outer layer of the ceramic powder layer, and an outer sheath is arranged on the outer layer of the heat preservation layer.

[0006] Furthermore, the lining layer includes a lining and a steel wire mesh arranged on an inner side wall of the lining.

[0007] Furthermore, the armor layer includes support columns 1 and 2 that are staggered, and a plurality of support columns 1 / support columns 2 form a cylindrical structure, and insert strips are provided at the staggered gaps between the support columns 1 and 2.

[0008] Furthermore, a plurality of the support columns 1 / support columns 2 form a cylindrical structure, an inner protective layer is provided on the inner wall, and an outer protective layer is provided on the outer wall.

[0009] Furthermore, the main line core includes a conductor layer at a central position, and the outer side of the conductor layer is coated with an insulating layer.

[0010] Compared with the prior art, the beneficial technical effects of the utility model are:

[0011] The utility model low-temperature resistant cable achieves low-temperature resistance by adding a ceramic powder layer, using ceramic, which is one of the most low-temperature resistant materials; at the same time, the structure of the armor layer avoids damage in the case of cold shrinkage, effectively improving the low-temperature resistance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 This is a cross-sectional view of the low-temperature resistant cable of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the insulating layer and the conductor layer;

[0015] Figure 3 It is a partial enlarged view of the armor layer section;

[0016] Figure 4 This is a partial enlarged view of the armor layer;

[0017] Figure 5 is a schematic diagram of the lining structure;

[0018] Description of reference numerals: 1. outer sheath; 2. thermal insulation layer; 3. ceramic powder layer; 4. armor layer; 5. lining layer; 6. filling layer; 7. insulation layer; 8. conductor layer;

[0019] 401. Support column one; 402. Support column two; 403. Insert; 404. Outer protective layer; 405. Inner protective layer; 501. Inner lining; 502. Wire mesh. DETAILED DESCRIPTION

[0020] like Figure 1-5 As shown, a low temperature resistant cable comprises a plurality of main cores distributed circumferentially, wherein the main core comprises a conductor layer 8 at the center, and the outer side of the conductor layer 8 is coated with an insulating layer 7. The main cores are arranged as shown in FIG. Figure 1 As shown, it is a plum blossom structure, and the specific arrangement can be determined according to actual needs.

[0021] An inner lining layer 5 is arranged on the outer side of the main line core. The inner lining layer 5 includes an inner lining 501 and a steel mesh 502 arranged on the inner side wall of the inner lining 501 . The steel mesh 502 plays a certain strong supporting role, thereby improving the compressive strength of the inner lining layer 5 .

[0022] A filling layer 6 is provided between the inner lining layer 5 and the main line core, and different filling materials can be selected for the filling layer according to actual needs.

[0023] The outer layer of the inner lining layer 5 is provided with an armor layer 4, and the armor layer 4 includes a support column 1 401 and a support column 2 402 that are staggered. A plurality of the support columns 1 401 / support column 2 402 form a cylindrical structure, and a plug 403 is provided at the staggered gap between the support columns 1 401 and the support column 2 402. A plurality of the support columns 1 401 / support column 2 402 form a cylindrical structure, and an inner protective layer 405 is provided on the inner wall, and an outer protective layer 404 is provided on the outer wall. Since the support columns 1 401, the support columns 2 402 and the plug 403 are in a live connection, they will not be damaged under the influence of the low temperature environment once shrinkage or expansion occurs, thereby reducing the risk of leakage.

[0024] The outer layer of the armor layer 4 is provided with a ceramic powder layer 3. The ceramic material is one of the most low-temperature resistant materials. In an extreme low-temperature environment, the ceramic material can maintain high mechanical strength and stability. In addition, the ceramic material also has good chemical corrosion resistance.

[0025] The outer layer of the ceramic powder layer 3 is provided with a heat-insulating layer 2 , and the outer layer of the heat-insulating layer 2 is provided with an outer sheath 1 .

[0026] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A low temperature resistant cable, characterized in that: The invention comprises a plurality of circumferentially distributed main line cores, wherein an inner lining layer (5) is arranged on the outer side of the main line core, and a filling layer (6) is arranged between the inner lining layer (5) and the main line core; an armor layer (4) is arranged on the outer layer of the inner lining layer (5), a ceramic powder layer (3) is arranged on the outer layer of the armor layer (4), a thermal insulation layer (2) is arranged on the outer layer of the ceramic powder layer (3), and an outer sheath (1) is arranged on the outer layer of the thermal insulation layer (2).

2. The low temperature resistant cable according to claim 1, characterized in that: The lining layer (5) comprises an inner lining (501) and a steel wire mesh (502) arranged on the inner side wall of the inner lining (501).

3. The low temperature resistant cable according to claim 1, characterized in that: The armor layer (4) comprises support columns 1 (401) and support columns 2 (402) which are staggered, a plurality of support columns 1 (401) / support columns 2 (402) form a cylindrical structure, and insertion strips (403) are arranged at the staggered gaps between the support columns 1 (401) and the support columns 2 (402).

4. The low temperature resistant cable according to claim 3, characterized in that: A plurality of the support columns 1 (401) / support columns 2 (402) form a cylindrical structure, the inner wall of which is provided with an inner protective layer (405), and the outer wall of which is provided with an outer protective layer (404).

5. The low temperature resistant cable according to claim 1, characterized in that: The main line core comprises a conductor layer (8) at a central position, and the outer side of the conductor layer (8) is covered with an insulating layer (7).

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