An explosion-proof fluoroplastic temperature-resistant instrument cable

Abstract

This utility model discloses an explosion-proof fluoroplastic high-temperature resistant instrument cable, including an outer protective layer for the instrument wire. One end of the outer protective layer is fixedly connected to a female connector for instrument wiring, and the other end is fixedly connected to a male connector for instrument wiring. The outer protective layer includes a wear-resistant layer, a high-temperature resistant layer inside the wear-resistant layer, a first shielding layer inside the high-temperature resistant layer, a second shielding layer inside the first shielding layer, and multiple heat insulation layers inside the second shielding layer. The heat insulation layers are filled with a heat-conducting fluid. This utility model, by filling the heat insulation layers with a heat-conducting fluid (such as methyl benzoate), allows the heat-conducting fluid in the first heat insulation layer to absorb some of the heat generated by the conductors during use, thereby cooling the entire cable.

Description

Technical Field

[0001] This utility model relates to the field of instrument cable technology, specifically to an explosion-proof fluoroplastic temperature-resistant instrument cable. Background Technology

[0002] Instrument cables are cables used for signal transmission and control circuits in instruments and other electrical equipment. Flame-retardant cables, in particular, have the characteristics of high anti-interference performance and stable electrical performance. They can reliably transmit digital and analog signals and are suitable for fixed installation in indoor, tunnel, pipeline or outdoor bracket environments.

[0003] However, with prolonged use and continuous current flow, eddy currents may occur in the internal cable conductors of existing instrument cables, leading to heat accumulation and localized temperature increases, which could even cause spontaneous combustion. To address this issue, we propose an explosion-proof fluoroplastic high-temperature resistant instrument cable. Utility Model Content

[0004] The purpose of this utility model is to provide an explosion-proof fluoroplastic temperature-resistant instrument cable to solve the problem mentioned in the background art that when the internal cable conductors of the instrument cable are used for a long time and the current flows for a long time, eddy currents may occur, causing some heat to accumulate and the local temperature of the cable to rise, which may even lead to spontaneous combustion of the cable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof fluoroplastic high-temperature resistant instrument cable, comprising an outer protective layer for the instrument wire, one end of which is fixedly connected to a female connector for instrument wiring, and the other end of which is fixedly connected to a male connector for instrument wiring. The outer protective layer includes a wear-resistant layer, a high-temperature resistant layer inside the wear-resistant layer, a first shielding layer inside the high-temperature resistant layer, a second shielding layer inside the first shielding layer, and multiple heat insulation layers inside the second shielding layer. The heat insulation layers are filled with a heat-conducting liquid, and an isolation layer is provided inside the heat insulation layers. A conductor is provided inside the isolation layer.

[0006] Preferably, the insulation layer includes a first insulation body, the cross-section of which is a flattened round structure, one end face of the first insulation body is tightly attached to the inner side of the second shielding layer, and the other end face of the first insulation body is tightly attached to the outer side of the insulation layer.

[0007] Preferably, the insulation layer further includes a second insulation body, the inner side of which is connected to a through pipe, and the inner side of the through pipe is connected to a heat conductor.

[0008] Preferably, the through pipe extends through the insulation layer to the inner side of the insulation layer, and the inner cavity of the through pipe is connected to the second insulation body.

[0009] Preferably, one end face of the heat conductor is an arc-shaped structure and is tightly fitted to the inner wall of the isolation layer, and the other end of the heat conductor is a semi-annular structure and is tightly fitted to the surface of the isolation layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model fills the interior of the insulation layer with a heat-conducting liquid, which can be methyl benzoate. During the use of the instrument cable, the conductor will generate some heat. The heat-conducting liquid in the first insulation body can absorb some of the heat, thereby cooling the entire cable. 2. This utility model improves the contact area between the heat conductor and the wire by setting a semi-annular structure on one end face of the heat conductor so that it can directly adhere to the surface of the wire. This increases the heat absorption efficiency of the overall insulation layer on the wire, thereby improving the heat dissipation performance of the wire and preventing heat accumulation on the wire. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a three-dimensional structural diagram of the internal structure of this utility model; Figure 3 This utility model Figure 2 Overall frontal sectional view; Figure 4 This is a front sectional view of another embodiment of the present invention; Figure 5 This utility model Figure 4 Enlarged cross-sectional view at point A in the middle.

[0012] In the diagram: 1. Female connector for instrument wiring; 2. External protective layer for instrument wires; 201. Wear-resistant layer; 202. High-temperature resistant layer; 203. First shielding layer; 204. Second shielding layer; 3. Male connector for instrument wiring; 4. Thermal insulation layer; 401. First thermal insulation body; 402. Second thermal insulation body; 403. Through pipe; 404. Heat conductor; 5. Insulation layer; 6. Wire. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] This utility model provides two embodiments, please refer to Figures 1 to 3This utility model provides an embodiment of an explosion-proof fluoroplastic temperature-resistant instrument cable, comprising an outer protective layer 2 for the instrument wire, one end of the outer protective layer 2 being fixedly connected to a female connector 1 for instrument wiring, and the other end of the outer protective layer 2 being fixedly connected to a male connector 3 for instrument wiring. The outer protective layer 2 includes a wear-resistant layer 201, a high-temperature resistant layer 202 on the inner side of the wear-resistant layer 201, a first shielding layer 203 on the inner side of the high-temperature resistant layer 202, and a second shielding layer 204 on the inner side of the first shielding layer 203. The wear-resistant layer 201 is made of wear-resistant fluoroplastic, the high-temperature resistant layer 202 is made of high-temperature resistant polymer material, and both the first shielding layer 203 and the second shielding layer 204 are made of metal material. The outer protective layer 2 and the male connector 3 for instrument wiring are both made of alloy material, thus giving the entire instrument cable explosion-proof performance. The second shielding layer 204 has multiple heat insulation layers 4 inside, and an isolation layer 5 inside the heat insulation layer 4. A wire 6 is located inside the isolation layer 5. The heat insulation layer 4 is filled with a heat-conducting liquid, which can be methyl benzoate. During the use of the instrument cable, the wire 6 will generate some heat. The heat-conducting liquid in the first heat insulation body 401 can absorb some of the heat, thereby cooling the entire cable.

[0015] Furthermore, the insulation layer 4 includes a first insulation body 401, the cross-section of the first insulation body 401 is set as a flat round structure, one end face of the first insulation body 401 is tightly attached to the inner side of the second shielding layer 204, and the other end face of the first insulation body 401 is tightly attached to the outer side of the isolation layer 5.

[0016] Please see Figures 4 to 5 In another embodiment of the present invention, the insulation layer 4 further includes a second insulation body 402. A through pipe 403 is connected to the inner side of the second insulation body 402, and a heat conductor 404 is connected to the inner side of the through pipe 403. The through pipe 403 extends through the insulation layer 5 to the inner side of the insulation layer 5. The inner cavity of the through pipe 403 and the second insulation body 402 are connected in a through manner. This arrangement allows the entire second insulation body 402 to fit against the outer side of the insulation layer 5, thereby allowing the heat-conducting liquid inside the second insulation body 402 to absorb the heat emitted by the wires 6 inside the insulation layer 5.

[0017] One end face of the heat conductor 404 is designed with an arc surface and is tightly fitted to the inner wall of the insulation layer 5. The other end of the heat conductor 404 is designed with a semi-annular surface and is tightly fitted to the surface of the insulation layer 5. This design allows the surface of the wire 6 to be in contact with the outer surface of the wire 6. At the same time, the second insulation body 402 and the heat conductor 404 are connected by a through pipe 403. This design allows the liquid inside the second insulation body 402 to enter the heat conductor 404 through the through pipe 403. The heat-conducting liquid inside the heat conductor 404 can directly absorb the heat emitted by the wire 6. Since the semi-annular surface of one end face of the heat conductor 404 can be directly fitted to the surface of the wire 6, the contact area between the heat conductor 404 and the wire 6 is increased. This increases the heat absorption efficiency of the overall insulation layer 4 on the wire 6, thereby improving the heat dissipation performance of the wire 6 and preventing heat accumulation on the wire 6.

[0018] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An explosion-proof fluoroplastic temperature-resistant instrument cable comprising an outer protective layer (2) of the instrument wire, characterized in that: One end of the outer protective layer (2) of the instrument wire is fixedly connected to the female connector (1) for instrument wiring, and the other end of the outer protective layer (2) of the instrument wire is fixedly connected to the male connector (3) for instrument wiring. The outer protective layer (2) of the instrument wire includes a wear-resistant layer (201). The inner side of the wear-resistant layer (201) is provided with a high-temperature resistant layer (202). The inner side of the high-temperature resistant layer (202) is provided with a first shielding layer (203). The inner side of the first shielding layer (203) is provided with a second shielding layer (204). The inner side of the second shielding layer (204) is provided with multiple heat insulation layers (4). The interior of the heat insulation layer (4) is filled with heat-conducting liquid. The inner side of the heat insulation layer (4) is provided with an isolation layer (5). The inner side of the isolation layer (5) is provided with a wire (6).

2. The explosion-proof fluoroplastic temperature-resistant instrument cable according to claim 1, characterized in that: The insulation layer (4) includes a first insulation body (401), the cross-section of the first insulation body (401) is set as a flat round structure, one side end face of the first insulation body (401) is closely attached to the inner side of the second shielding layer (204), and the other side end face of the first insulation body (401) is closely attached to the outer side of the isolation layer (5).

3. The explosion-proof fluoroplastic temperature-resistant instrument cable according to claim 1, characterized in that: The insulation layer (4) further includes a second insulation body (402), the inner side of which is connected to a through pipe (403), and the inner side of the through pipe (403) is connected to a heat conductor (404).

4. The explosion-proof fluoroplastic temperature-resistant instrument cable according to claim 3, characterized in that: The through pipe (403) extends through the isolation layer (5) to the inside of the isolation layer (5), and the inner cavity of the through pipe (403) is connected to the second insulation body (402).

5. The explosion-proof fluoroplastic temperature-resistant instrument cable according to claim 4, characterized in that: One end face of the heat conductor (404) is set as an arc surface structure and is closely attached to the inner wall of the isolation layer (5), and the other end of the heat conductor (404) is set as a semi-annular surface structure and is closely attached to the surface of the isolation layer (5).

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