Fixing device for laying optical cable in S shape by using cable bridge

Abstract

The utility model belongs to the technical field of optical fiber sensing, and particularly discloses a fixing device for laying an optical cable in an S shape by using a cable bridge. Through the splicing design of the middle horizontal rectangular plate, the upper inverted U-shaped groove and the lower S-shaped clamping belt, the fixing positions of peaks and valleys of the S-shaped optical cable to be laid in the horizontal and vertical directions can be adjusted, the laying length of the optical cable can be reduced under the condition that the detection precision is ensured, and the laying economy of the S-shaped optical cable is improved. The fixing device is easy to disassemble and assemble, cable line maintenance and transformation are facilitated, compared with a disposable bandage, the disassembled fixing clamp can be repeatedly used, the installation cost is saved, and the fixing device is suitable for being applied to a long-distance cable temperature monitoring scene.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber sensing and specifically discloses a fixing device for laying optical cables in an S-shape by using a cable bridge. Background Art

[0002] Large-capacity grating array technology is a new type of fiber optic sensing technology that has emerged in recent years. At present, due to its good stability, good durability, and high measurement point density, large-capacity grating array technology can meet the needs of full-time, full-domain, all-weather, and intelligent monitoring of the monitored system, and has been widely used in temperature monitoring of various lines and pipelines. Large-capacity grating array technology can reach a temperature sensing length of 10cm, which meets the requirements of the national standard GB50116 to use one temperature-sensitive optical cable to protect multiple power cables. Compared with other cable temperature monitoring technologies, it greatly reduces the monitoring cost and engineering volume, and has great promotion value. However, at present, most projects use the method of directly fixing the temperature-sensitive optical cable on the cable tray with a cable tie. If the cable laid under it needs to be repaired or adjusted, the temperature-sensitive optical cable needs to be disassembled and reinstalled, which increases the manpower demand of the project. In addition, during the installation process, there will be a certain distance between the optical cable fixing point on the side of the cable tray and the laid cable. This distance, which is inconvenient to adjust by fixing with a cable tie, often makes the laid temperature-sensitive optical cable lose its economic efficiency while ensuring the detection accuracy. Therefore, how to design an adjustable fixing device for the array grating on the cable tray to simplify the installation and disassembly process of the temperature-sensitive optical cable, reduce the use length of the temperature-sensitive optical cable, and improve the detection accuracy for cables of different sizes of cable trays is an issue that technical personnel in this field need to consider. Utility Model Content

[0003] In order to solve the technical problems listed in the background technology, the utility model provides a fixing device for laying optical cables in an S-shaped manner using a cable tray. The specific technical solution is as follows:

[0004] A fixing device for laying optical cables in an S-shape using a cable tray, which is a bent hard belt-like object whose main body is placed in a cable tray box, including a horizontal rectangular plate in the middle, an inverted U-shaped groove in the upper part and an S-shaped clip in the lower part. The inverted U-shaped groove clamps the upper edge of the side wall of the cable tray box, and the bottom of the box inner part is connected to a side edge of the horizontal rectangular plate, and the opposite side of the side edge is buckled with the upper edge of the S-shaped clip.

[0005] The downward bend of the S-shaped cassette is used to carry the peak and valley fixing points of the S-shaped laid optical cable. This design can change the distance between the optical cable fixing point and the side wall of the cable tray by adjusting the spacing between the two opposite sides of the horizontal rectangular plate used for connection, thereby adjusting the distance between the peak and valley fixing points of the S-shaped laid optical cable, and indirectly adjusting the total length of the optical cable that needs to be laid, so the laying length of the optical cable can be reduced while ensuring the detection accuracy.

[0006] Preferably, the S-shaped cassette is formed by upper and lower sections of horizontally placed U-shaped grooves connected by buckles.

[0007] This makes it possible to adjust the fixed positions of the peaks and valleys of the S-shaped optical cable to be laid in the horizontal and vertical directions by flexibly selecting the upper horizontal U-shaped grooves with different groove widths and groove depths, and further reduce the laying length of the optical cable while ensuring the detection accuracy.

[0008] Preferably, the fixing device is made of plastic, and the horizontal rectangular plate and the upper inverted U-shaped groove are integrally formed by injection molding.

[0009] When the depth of the upper horizontal U-shaped groove is adjustable, the horizontal rectangular plate and the upper inverted U-shaped groove are injection molded parts and can be integrally formed, thus saving manufacturing and installation processes.

[0010] Preferably, the horizontal rectangular plate is snap-connected to the upper inverted U-shaped groove.

[0011] In some cases, it is not convenient to make a horizontal U-shaped groove with different depths, so the horizontal rectangular plate can be made detachable, and the fixed position of the peak and valley of the S-shaped optical cable to be laid on the horizontal plane can be adjusted by selecting different horizontal rectangular plates.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The utility model provides a fixing device for laying optical cables in an S-shape using a cable tray, which is designed by splicing a horizontal rectangular plate in the middle, an inverted U-shaped groove in the upper part, and an S-shaped tape in the lower part. The fixing positions of the peaks and valleys of the S-shaped optical cable to be laid in the horizontal and vertical directions can be adjusted, and the laying length of the optical cable can be reduced while ensuring the detection accuracy, thereby improving the economy of laying the S-shaped optical cable.

[0014] The fixing device is easy to disassemble and assemble, and is convenient for cable line maintenance and modification. Compared with disposable binding tapes, the removed fixing card can be reused, saving installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the optical cable fixing card in the embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of assembling a horizontal rectangular plate and a U-shaped groove placed horizontally on the upper section in an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of a plurality of optical cable fixing cards fixing an S-shaped temperature-sensitive optical cable in an embodiment of the utility model;

[0018] Figure 4This is a schematic diagram of an optical cable fixing card installed on a side wall of a cable tray box in an embodiment of the utility model;

[0019] Among them, 1. The outer side of the upper inverted U-shaped groove; 2. The top of the upper inverted U-shaped groove; 3. The horizontal rectangular plate; 4. The upper section of the U-shaped groove placed horizontally; 5. The lower section of the U-shaped groove placed horizontally; 6. The temperature-sensitive optical cable. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on this embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 As shown, an embodiment of the utility model provides an optical cable fixing card for laying a temperature-sensitive optical cable 6 in an S-shaped cable tray. The overall body is a bent hard belt-like object whose main body is placed in a cable tray box, including a horizontal rectangular plate 3 in the middle, an inverted U-shaped groove in the upper part and an S-shaped tape in the lower part. The outer side edge 1 of the upper inverted U-shaped groove clamps the outer side of the side wall of the cable tray box, and the upper inverted U-shaped groove top 2 is buckled on the top edge of the side wall.

[0022] The bottom of the upper inverted U-shaped groove box is connected to one side of the horizontal rectangular plate 3, and the opposite side of the side is buckled with the upper edge of the S-shaped cassette, and the S-shaped cassette is formed by upper and lower sections of horizontally placed U-shaped grooves connected by buckles; wherein, the upper edge of the upper horizontally placed U-shaped groove 4 is buckled with the horizontal rectangular plate 3, and the lower horizontally placed U-shaped groove 5 is for the temperature-sensitive optical cable 6 to pass through. The upper horizontally placed U-shaped groove 4 has a variety of configurations with different depths and / or groove widths for selection to adapt to different models of cables and bridge boxes.

[0023] like Figure 3 , Figure 4 As shown in the figure, when the temperature-sensitive optical cable is arranged in an "S" shape along the bridge, according to the specification requirements of Article 6.2.16 of the national standard GB50116, the period of the S-shaped arrangement must be 1.8m. In the actual installation process, the installation distance of the optical cable fixing card is 1.8 meters, and an optical cable fixing card is installed at the crest and trough of the "S" shape of the temperature-sensitive optical cable 6. Figure 3 When the cables in the cable tray box need to be repaired or supplemented, the temperature-sensitive optical cable 6 only needs to be taken out from the optical cable fixing card, and the optical cable fixing card and the tray do not need to be disassembled. After the cable is repaired, the temperature-sensitive optical cable 6 can be restored to the optical cable fixing card.

[0024] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing device for laying optical cables in an S-shaped manner using a cable tray, which is a bent hard belt-shaped object whose main body is placed in a cable tray box, characterized in that: It includes a horizontal rectangular plate in the middle, an inverted U-shaped groove in the upper part and an S-shaped clip in the lower part. The inverted U-shaped groove clamps the upper edge of the side wall of the cable tray box. The bottom of the inner part of the box is connected to a side edge of the horizontal rectangular plate, and the opposite side of the side edge is buckled with the upper edge of the S-shaped clip.

2. A fixing device for laying optical cables in an S-shape using a cable tray according to claim 1, characterized in that: The S-shaped cassette is formed by connecting upper and lower sections of horizontally placed U-shaped grooves through buckles.

3. A fixing device for laying optical cables in an S-shape using a cable tray according to claim 2, characterized in that: The fixing device is made of plastic, and the horizontal rectangular plate and the upper inverted U-shaped groove are integrally formed by injection molding.

4. A fixing device for laying optical cables in an S-shape using a cable tray according to claim 2, characterized in that: The horizontal rectangular plate is snap-connected to the upper inverted U-shaped groove.

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