High-strength temperature measurement optical fiber composite cable

Abstract

The utility model discloses a high-strength temperature-measuring optical fiber composite cable, which comprises an outer sheath, a stainless steel hinge layer is fixedly arranged on the inner side of the outer sheath, a stainless steel braid layer is fixedly arranged on the inner side of the stainless steel hinge layer, and anti-corrosion flame-retardant ointment is filled between the stainless steel hinge layer and the stainless steel braid layer. According to the high-strength temperature measurement optical fiber composite cable, the temperature measurement assembly is additionally arranged in the armor layer, the temperature change of each position of the cable can be accurately sensed by using the optical fiber Raman scattering and optical time domain reflection principles of the temperature measurement optical fiber unit, and the abnormity of the temperature around a heat distribution pipeline can be timely found, so that maintenance personnel can timely maintain and repair the cable, and the maintenance efficiency is improved. The stainless steel hinge layer and the stainless steel braid layer are arranged outside the cable, and the corrosion-resistant flame-retardant ointment is filled, so that the tensile and pressure-resistant capabilities of the cable can be remarkably improved, the problem of deformation and damage is not easy to occur, and the cable has the characteristics of water resistance, flame retardance, corrosion resistance and high temperature resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature-measuring composite cables, in particular to a high-strength temperature-measuring optical fiber composite cable. Background Art

[0002] Thermal pipelines are heating pipelines that start from boiler rooms, direct-fired engine rooms, heating centers, etc., and run from heat sources to the thermal entrances of buildings. They are basic heating facilities. Distributed pipeline integrated online monitoring systems are facilities used to monitor the operation of heat pipelines and improve operational safety. They usually use conventional optical fibers for communication. Optical fibers are mainly composed of an insulating outer sheath and an internal optical fiber line. The above commonly used types of composite optical fiber cables have the following deficiencies in actual applications:

[0003] Since composite optical fiber cables are mainly used for monitoring thermal pipelines, the operating environment is relatively harsh and they are often easily deformed and damaged by factors such as pipeline extrusion. Their overall tensile and compressive resistance is poor, and they are unable to monitor abnormal temperatures around thermal pipelines. Utility Model Content

[0004] The utility model aims to provide a high-strength temperature-measuring optical fiber composite cable to solve the problems of poor tensile and compressive resistance of the existing optical fiber composite cables and the inability to monitor abnormal temperatures around thermal pipelines proposed in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a high-strength temperature-measuring optical fiber composite cable, comprising an outer sheath, a stainless steel hinged layer is fixedly arranged on the inner side of the outer sheath, a stainless steel braided layer is fixedly arranged on the inner side of the stainless steel hinged layer, anti-corrosion and flame-retardant oil gel is filled between the stainless steel hinged layer and the stainless steel braided layer, a water-blocking yarn is fixedly arranged on the inner side of the stainless steel braided layer, a spiral armored tube is fixedly arranged on the inner side of the water-blocking yarn, a temperature-measuring component is fixedly arranged on the inner side of the spiral armored tube, an inner sheath is fixedly arranged on the inner side of the temperature-measuring component, a filling layer is fixedly arranged on the inner side of the inner sheath, and four communication optical fiber cores are fixedly arranged in the middle of the filling layer.

[0006] Preferably, the temperature measuring component includes a temperature measuring layer and a heat insulating layer fixedly arranged on the inner side of the temperature measuring layer, and three evenly distributed temperature measuring optical fiber units are fixedly arranged inside the temperature measuring layer; the temperature changes at various positions of the cable can be accurately sensed, and abnormal temperatures around the thermal pipeline can be discovered in time.

[0007] Preferably, the temperature measuring layer is made of cross-linked polyethylene material, and the heat insulation layer is made of ceramic silicone rubber material, which can protect the internal optical fiber from damage and the communication temperature.

[0008] Preferably, the stainless steel hinge layer is made of 12 stainless steel wires, the hinge direction of the stainless steel wires is rightward, and the diameter of the stainless steel wires is 1.30 mm; the overall structural strength of the cable can be increased.

[0009] Preferably, the stainless steel braided layer is made of 12 thin steel wires, and the diameter of the thin steel wires is 0.75 mm; this can increase the tensile and compressive resistance, anti-fracture and anti-scratch properties of the cable.

[0010] Preferably, the outer sheath is made of medium-density polyethylene material, and the inner sheath is made of thermoplastic material; it is waterproof, flame-retardant, and high-temperature resistant.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The optical fiber composite cable is equipped with a temperature measuring component in the armor layer. The temperature measuring optical fiber unit uses the optical fiber Raman scattering and optical time domain reflection principle to accurately sense the temperature changes at various locations of the cable, and can promptly detect abnormal temperatures around the thermal pipeline, so that maintenance personnel can perform maintenance and repairs in a timely manner to reduce the failure rate.

[0013] A stainless steel hinge layer and a stainless steel braided layer are set on the outside of the cable and filled with anti-corrosion and flame-retardant jelly, which can significantly improve the cable's tensile and compressive resistance, making it less prone to deformation and damage. It has the characteristics of being waterproof, flame-retardant, corrosion-resistant and high-temperature resistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional view of the temperature measuring optical fiber composite cable of the utility model;

[0015] Figure 2 It is a front cross-sectional view of the cable core of the utility model;

[0016] Figure 3 It is a schematic diagram of the partial structure of the temperature measuring optical fiber composite cable of the utility model.

[0017] In the figure: 1. outer sheath; 2. anti-corrosion and flame-retardant gel; 3. stainless steel hinge layer; 4. stainless steel braided layer; 5. water-blocking yarn; 6. temperature measuring layer; 7. temperature measuring optical fiber unit; 8. thermal insulation layer; 9. inner sheath; 10. communication optical fiber core; 11. filling layer; 12. spiral armored tube. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1-3The utility model provides a high-strength temperature-measuring optical fiber composite cable, comprising an outer sheath 1, a stainless steel hinged layer 3 is fixedly arranged on the inner side of the outer sheath 1, a stainless steel braided layer 4 is fixedly arranged on the inner side of the stainless steel hinged layer 3, an anti-corrosion and flame-retardant oil gel 2 is filled between the stainless steel hinged layer 3 and the stainless steel braided layer 4, a water-blocking yarn 5 is fixedly arranged on the inner side of the stainless steel braided layer 4, a spiral armored tube 12 is fixedly arranged on the inner side of the water-blocking yarn 5, a temperature-measuring component is fixedly arranged on the inner side of the spiral armored tube 12, an inner sheath 9 is fixedly arranged on the inner side of the temperature-measuring component, a filling layer 11 is fixedly arranged on the inner side of the inner sheath 9, and four communication optical fiber cores 10 are fixedly arranged in the middle of the filling layer 11.

[0020] See also Figure 1 and Figure 2 Further, the temperature measuring component includes a temperature measuring layer 6 and a heat insulating layer 8 fixedly arranged inside the temperature measuring layer 6, three evenly distributed temperature measuring optical fiber units 7 are fixedly arranged inside the temperature measuring layer 6, the temperature measuring layer 6 is made of a cross-linked polyethylene material, and the heat insulating layer 8 is made of a ceramic silicone rubber material;

[0021] When in use, the temperature measuring optical fiber unit 7 uses the optical fiber Raman scattering and optical time domain reflection principles to accurately sense the temperature changes at various locations of the cable, and can promptly detect abnormal temperatures around the thermal pipeline. The thermal insulation layer 8 uses ceramic silicone rubber material with significant thermal insulation properties, which prevents external high temperatures from being transmitted to the communication optical fiber core 10, thereby improving the stability of optical fiber communication.

[0022] See also Figure 1 , Figure 2 and Figure 3 , further, the stainless steel hinge layer 3 is made of 12 stainless steel wires, the hinge direction of the stainless steel wires is rightward, the diameter of the stainless steel wires is 1.30 mm, the stainless steel braided layer 4 is made of 12 fine steel wires, the diameter of the fine steel wires is 0.75 mm, the outer sheath 1 is made of medium-density polyethylene material, and the inner sheath 9 is made of thermoplastic material;

[0023] When in use, by compounding the stainless steel hinge layer 3 and the stainless steel braided layer 4 on the outside of the cable, the tensile and compressive properties of the cable can be increased. It can withstand a tensile force of 7000N for a long time and 14000N for a short time. The designed flattening force is 5000N / 10cm for a long time and 10000N / 10cm for a short time.

[0024] When the embodiment of the present application is in use: the net weight of the optical fiber composite cable is 210kg / 1000m, the long-term applicable temperature is -40°C to +120°C, it has strong weather resistance, is suitable for a variety of harsh environments, has high overall strength, and has a long service life.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-strength temperature-measuring optical fiber composite cable, comprising an outer sheath (1), characterized in that: A stainless steel hinged layer (3) is fixedly arranged on the inner side of the outer sheath (1), a stainless steel braided layer (4) is fixedly arranged on the inner side of the stainless steel hinged layer (3), an anti-corrosion and flame-retardant gel (2) is filled between the stainless steel hinged layer (3) and the stainless steel braided layer (4), a water-blocking yarn (5) is fixedly arranged on the inner side of the stainless steel braided layer (4), a spiral armored tube (12) is fixedly arranged on the inner side of the water-blocking yarn (5), a temperature measuring component is fixedly arranged on the inner side of the spiral armored tube (12), an inner sheath (9) is fixedly arranged on the inner side of the temperature measuring component, a filling layer (11) is fixedly arranged on the inner side of the inner sheath (9), and four communication optical fiber cores (10) are fixedly arranged in the middle of the filling layer (11).

2. A high-strength temperature-measuring optical fiber composite cable according to claim 1, characterized in that: The temperature measurement component comprises a temperature measurement layer (6) and a heat insulation layer (8) fixedly arranged inside the temperature measurement layer (6), and three evenly distributed temperature measurement optical fiber units (7) are fixedly arranged inside the temperature measurement layer (6).

3. A high-strength temperature-measuring optical fiber composite cable according to claim 2, characterized in that: The temperature measuring layer (6) is made of a cross-linked polyethylene material, and the heat insulating layer (8) is made of a ceramic silicone rubber material.

4. The high-strength temperature-measuring optical fiber composite cable according to claim 1, characterized in that: The stainless steel hinge layer (3) is made of 12 stainless steel wires, the hinge direction of the stainless steel wires is rightward, and the diameter of the stainless steel wires is 1.30 mm.

5. The high-strength temperature-measuring optical fiber composite cable according to claim 1, characterized in that: The stainless steel braided layer (4) is made of 12 thin steel wires, and the diameter of the thin steel wires is 0.75 mm.

6. The high-strength temperature-measuring optical fiber composite cable according to claim 1, characterized in that: The outer sheath (1) is made of medium-density polyethylene material, and the inner sheath (9) is made of thermoplastic material.

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