Sensing optical cable for drag chain

Abstract

The utility model relates to the technical field of sensing optical cables, and discloses a sensing optical cable for a drag chain, the structure of the sensing optical cable is flat, the sensing optical cable comprises a drag stress cable core and a signal transmission fiber core, the exterior of the drag stress cable core and the exterior of the signal transmission fiber core are respectively provided with a tightly-wrapped protective sleeve, and the exterior of the tightly-wrapped protective sleeve is provided with a reinforced anti-extrusion mechanism. According to the sensing optical cable for the drag chain, the drag stress cable core, the signal transmission fiber core and the tight wrapping protective sleeve are arranged, and the optical cable which is reasonable in design and mature in process is utilized, so that the sensing optical cable has the advantages of good bendability, tensile strength, high strength, good wear resistance, environmental friendliness, no corrosion caused by a sensor, and long service life. Personal safety is guaranteed, pollution to the water environment is avoided, the use requirement of a dragging test can be met, the first friction plug-in ball head and the second friction plug-in ball head are inserted into the second outer frame, the second outer frames are connected, and the anti-extrusion strength of the optical cable can be enhanced by means of the arranged memory alloy supporting rod.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber sensing technology, specifically to an optical fiber sensing cable for a drag chain. Background Technology

[0002] With societal development, the demand for optical cables in the sensor field is gradually increasing. In the underwater towed chain testing industry, optical cables are required to be tangle-free and easy to deploy and retract. Currently, the optical cables used in drag chains are generally cylindrical in structure, with conventional cylindrical drums as the rollers. The disadvantages of this structure are that during long-term operation, the fiber core is compressed and deformed, the protective layer is damaged, and the service life is short. This results in problems such as difficulty in deploying and retracting the sensor chain, weak measurement signals, and data loss. Utility Model Content

[0003] The purpose of this invention is to provide a sensing optical cable for a drag chain to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sensing optical cable for a drag chain, which has a flat structure and includes a drag-load cable core and a signal transmission fiber core. Both the drag-load cable core and the signal transmission fiber core are provided with a tight-wrap protective sleeve, and the tight-wrap protective sleeve is provided with a reinforced anti-pinch mechanism.

[0005] Preferably, the signal transmission fiber cores are provided with sixteen fibers, and the sixteen signal transmission fiber cores are arranged in parallel. The sixteen signal transmission fiber cores are provided in two groups, and each group of the signal transmission fiber cores is provided with eight fibers.

[0006] The drag-load cable core is provided with three cores, and the three drag-load cable cores are distributed on both sides and in the middle. The tight-pack protective sleeve is wrapped around the drag-load cable core and the signal transmission fiber core.

[0007] Preferably, the tight-fitting material of the sixteen signal transmission fiber cores can be environmentally friendly flame-retardant polyvinyl chloride, environmentally friendly low-smoke halogen-free flame-retardant polyolefin, or environmentally friendly polyurethane. The fiber core material is quartz glass, which can enhance the bending resistance of the fiber core.

[0008] Preferably, the materials of the three drag-bearing cable cores can be stainless steel wire or glass fiber reinforced plastic, and the materials of the tight-fitting protective sleeve can be polyurethane or thermoplastic polyurethane elastic rubber. This can enhance the tensile strength of the drag-bearing cable cores, be used for long-term dragging tests, and enhance the waterproof, wear-resistant, and pressure-resistant properties of the optical cable. It is also suitable for frequent and repeated deployment and retraction of the drag chain, and is not limited to the above materials.

[0009] Preferably, the sensors are spaced 5m apart, the sensor chain is 600m long, the sixteen signal transmission fiber cores are 0.6mm in size, the three drag force cable cores are 1.2mm in size, the tight-fitting protective sleeve is 19mm wide and 4mm thick, and its size is not limited to the above-mentioned sizes.

[0010] Preferably, the reinforced anti-extrusion mechanism includes an outer frame one, which is disposed outside the tight-fitting protective sleeve. A friction plug ball head one is fixedly installed on the top of the outer frame one. An outer frame two is disposed outside the friction plug ball head one. A friction plug ball head two is disposed inside the outer frame two. A shape memory alloy support rod is fixedly installed on the inner side of the friction plug ball head two, so as to enhance the anti-extrusion deformation resistance of the optical cable through the reinforced anti-extrusion mechanism.

[0011] Preferably, holes are provided at corresponding positions of the outer frame two and the friction plug ball head one and the friction plug ball head two, and the friction plug ball head one and the friction plug ball head two are inserted into the holes provided inside the outer frame two, so as to facilitate the insertion and installation of the reinforcing anti-pinch mechanism through the friction plug ball head one and the friction plug ball head two.

[0012] Compared with the prior art, this utility model provides a sensing optical cable for tow chains, which has the following advantages:

[0013] 1. The optical fiber cable for this towing chain, through the setting of the towing force cable core, signal transmission fiber core and tight-packed protective sleeve, is a reasonably designed and technologically mature combination of optical fiber cable. It has good flexibility, tensile strength, high strength and good wear resistance. The optical fiber cable is environmentally friendly, will not cause corrosion to the sensor, ensure personal safety and will not pollute the water environment, and can meet the usage requirements of towing test.

[0014] 2. The optical fiber cable for this towing chain, through the setting of the reinforced anti-extrusion mechanism, can install the outer frame one and the outer frame two by inserting the friction plug ball one and the friction plug ball two into the inside of the outer frame two during use, and at the same time connect the outer frames two. The setting of the shape memory alloy support rod can enhance the compressive strength of the optical fiber cable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention from the front view;

[0018] Figure 3 This is a schematic diagram of the external structure of the reinforced anti-crushing mechanism of this utility model;

[0019] Figure 4 This is an exploded view of the external structure of the reinforced anti-crushing mechanism of this utility model.

[0020] In the diagram: 1. Drag-loaded cable core; 2. Signal transmission fiber core; 3. Tight-packed protective sleeve; 4. Reinforced anti-crushing mechanism; 41. Outer frame one; 42. Friction plug ball head one; 43. Outer frame two; 44. Friction plug ball head two; 45. Shape memory alloy strut. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example 1:

[0024] Please see Figure 1-2 This utility model provides a technical solution: a sensing optical cable for a drag chain, which has a flat structure and includes a drag-load cable core 1 and a signal transmission fiber core 2. Both the drag-load cable core 1 and the signal transmission fiber core 2 are provided with a tight-wrap protective sleeve 3, and the tight-wrap protective sleeve 3 is provided with a reinforcing anti-pinch mechanism 4.

[0025] Furthermore, the signal transmission fiber core 2 is provided with sixteen fibers, and the sixteen signal transmission fiber cores 2 are arranged in parallel. The sixteen signal transmission fiber cores 2 are provided in two groups, and each group of signal transmission fiber cores 2 is provided with eight fibers.

[0026] The drag-load cable core 1 is provided with three strands, which are distributed on both sides and in the middle. The protective sleeve 3 is wrapped around the drag-load cable core 1 and the signal transmission fiber core 2.

[0027] Furthermore, the tight-fitting material for the sixteen signal transmission fiber cores 2 can be environmentally friendly flame-retardant polyvinyl chloride, environmentally friendly low-smoke halogen-free flame-retardant polyolefin, or environmentally friendly polyurethane. The fiber core material is quartz glass, which can enhance the fiber core's resistance to bending.

[0028] Furthermore, the materials for the three drag-bearing cable cores 1 can be stainless steel wire or glass fiber reinforced plastic, and the materials for the tight-fitting protective sleeve 3 can be polyurethane or thermoplastic polyurethane elastic rubber. This can enhance the tensile strength of the drag-bearing cable cores, be used for long-term dragging tests, and enhance the waterproof, wear-resistant, and pressure-resistant properties of the optical cable. It is also suitable for the frequent and repeated deployment and retraction of the drag chain, and is not limited to the above materials.

[0029] Furthermore, the sensors are spaced 5m apart, the sensor chain is 600m long, the sixteen signal transmission fiber cores 2 are 0.6mm in size, the three drag force cable cores 1 are 1.2mm in size, the tight protective sleeve 3 is 19mm wide and 4mm thick, and its size is not limited to the above-mentioned dimensions.

[0030] Example 2:

[0031] Please see Figure 3-4 Furthermore, in conjunction with Embodiment 1, it is further obtained that the reinforced anti-extrusion mechanism 4 includes an outer frame 41, which is disposed outside the tight-fitting protective sleeve 3. A friction plug ball head 42 is fixedly installed on the top of the outer frame 41. An outer frame 43 is disposed outside the friction plug ball head 42. A friction plug ball head 44 is disposed inside the outer frame 43. A shape memory alloy support rod 45 is fixedly installed on the inner side of the friction plug ball head 44, so as to strengthen the anti-extrusion deformation resistance of the optical cable through the reinforced anti-extrusion mechanism 4.

[0032] Furthermore, holes are provided at corresponding positions of the outer frame 43 and the friction plug ball head 42 and the friction plug ball head 44, and the friction plug ball head 42 and the friction plug ball head 44 are inserted into the holes provided inside the outer frame 43, which facilitates the insertion and installation of the reinforcing anti-pinch mechanism 4 through the friction plug ball head 42 and the friction plug ball head 44.

[0033] In actual operation, when this device is used, the signal transmission optical fiber 2 and the towing cable core 1 are arranged alternately and aligned. They are plasticized with waterproof and wear-resistant rubber material to form a flat sensing chain. Friction plug ball head 1 42 and friction plug ball head 2 44 are inserted into the inner frame 2 43, enabling the connection between outer frame 1 41 and outer frame 2 43. The shape memory alloy support rod 45 can support the outer frame 2 43 on both sides, preventing the optical cable from being squeezed and deformed. The bottom of the sensing chain is connected to a counterweight. The entire sensing chain is coiled on a single disc and transported to the designated target sea area by a small unmanned boat. The single disc is rotated by an electric device to conduct automatic deployment and towing tests of the sensing chain. This utility model has the advantages of simple operation at sea, practical and novel method, and solves the problems of sensor chain entanglement and twisting caused by conventional cylindrical disc sensor chains, which result in difficulty in deploying and retrieving the sensor chain, weak measurement signals, and data loss. It plays an important role in improving my country's marine monitoring environment technology.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A sensing optical cable for a drag chain, comprising a drag-load-bearing cable core (1) and a signal transmission fiber core (2), characterized in that: Both the drag-load cable core (1) and the signal transmission fiber core (2) are provided with a tight-wrap protective sleeve (3), and the tight-wrap protective sleeve (3) is provided with a reinforced anti-pinch mechanism (4).

2. The sensing optical cable for a drag chain according to claim 1, characterized in that: The signal transmission fiber core (2) is provided with sixteen fibers, and the sixteen signal transmission fiber cores (2) are arranged in parallel. The sixteen signal transmission fiber cores (2) are provided in two groups, and each group of the signal transmission fiber cores (2) is provided with eight fibers. The drag-load cable core (1) is provided with three strands, and the three drag-load cable cores (1) are arranged on both sides and in the middle. The tight-fitting protective sleeve (3) is wrapped around the drag-load cable core (1) and the signal transmission fiber core (2).

3. The sensing optical cable for a drag chain according to claim 1, characterized in that: The tight-fitting material of the sixteen signal transmission fiber cores (2) can be environmentally friendly flame-retardant polyvinyl chloride, environmentally friendly low-smoke halogen-free flame-retardant polyolefin, or environmentally friendly polyurethane, and the fiber core material is quartz glass.

4. The sensing optical cable for a drag chain according to claim 1, characterized in that: The materials of the three drag-bearing cable cores (1) can be stainless steel wire or glass fiber reinforced plastic, and the materials of the tight-fitting protective sleeve (3) can be polyurethane or thermoplastic polyurethane elastic rubber.

5. The sensing optical cable for a drag chain according to claim 1, characterized in that: The sensors are spaced 5m apart, the sensor chain is 600m long, the sixteen signal transmission fiber cores (2) are 0.6mm in size, the three drag force cable cores (1) are 1.2mm in size, the tight protective sleeve (3) is 19mm wide and 4mm thick.

6. The sensing optical cable for a drag chain according to claim 1, characterized in that: The reinforced anti-extrusion mechanism (4) includes an outer frame (41), which is located outside the tight-fitting protective sleeve (3). A friction plug ball head (42) is fixedly installed on the top of the outer frame (41). An outer frame (43) is located outside the friction plug ball head (42). A friction plug ball head (44) is located inside the outer frame (43). A memory alloy support rod (45) is fixedly installed on the inner side of the friction plug ball head (44).

7. The sensing optical cable for a drag chain according to claim 6, characterized in that: Holes are provided at corresponding positions of the outer frame 2 (43) and the friction plug ball head 1 (42) and the friction plug ball head 2 (44), and the friction plug ball head 1 (42) and the friction plug ball head 2 (44) are plugged into the holes opened inside the outer frame 2 (43).

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