Fixing device for accompanying optical cable under protection of silicon tube

Abstract

The utility model discloses a fixing device for an accompanying optical cable under the protection of a silicon tube. The fixing device comprises a fixing sleeve, a plurality of fixing assemblies, a plurality of pressure sensors and a plurality of pressure displays electrically connected with the pressure sensors. The fixing assembly comprises a retractable optical cable clamp and a screw, the retractable optical cable clamp is located in the fixing sleeve, and one end of the screw penetrates through the fixing sleeve to be connected with the retractable optical cable clamp so as to drive the retractable optical cable clamp to be close to or away from an optical cable located in the fixing sleeve; the pressure sensor is arranged on one side, close to the optical cable, of the retractable optical cable clamp and / or one side, where the optical cable is placed, of the fixed sleeve; and the pressure display is arranged outside the fixed sleeve. The accompanying optical cable is fixed in the fixing sleeve through the fixing assembly, namely the accompanying optical cable is fixed in the silicon pipe, the silicon pipe and the accompanying optical cable are promoted to cooperatively deform all the time, and then the safety state of the pipeline is accurately evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cable monitoring, in particular to a fixing device for accompanying optical cables under silicon tube protection. Background Art

[0002] The monitoring of pipeline accompanying optical cables based on optical fiber sensing technology is currently a hot topic. The accompanying optical cables are laid in the same trench as long-distance buried pipelines and are used as monitoring sensors. When the pipeline leaks, is damaged by invasion or suffers geological disasters, the optical characteristics of the light waves in the accompanying optical cables will be affected. By processing the changes in optical signals, disasters that endanger the safety of the pipeline along the pipeline can be identified.

[0003] According to the "Design and Construction Specifications for Optical Cables (Silicon Tubes) Laid in the Same Trench for Oil and Gas Pipelines" (SY / T4108-2019), the optical cable construction requires the installation of an external protective casing, which is a high-density polyethylene (HDPE) silicon tube with high strength and flexibility; under the influence of the silicon tube, the optical cable can move freely inside the silicon tube. Especially when the pipeline suffers from geological disasters such as landslides, ground collapse, and uneven soil settlement, the creep deformation of the soil causes the soil pressure to act directly on the silicon tube. Since the accompanying optical cable has a small constraint force in the silicon tube, the strain transfer efficiency is greatly reduced, resulting in a slow strain transfer response and a strain difference, which makes the pipeline safety monitoring lag.

[0004] In addition, the accompanying optical cable (silicon tube) is laid in parallel with the pipeline according to the design, and the horizontal static distance between the silicon tube and the outer wall of the pipeline is generally controlled at 300mm. However, due to factors such as geological activities and soil deformation, the position of the accompanying optical cable (silicon tube) is often greatly offset, affecting pipeline early warning monitoring.

[0005] Therefore, designing a fixing device for accompanying optical cables under silicon tube protection is beneficial to improving the accuracy of oil and gas pipeline monitoring and early warning, and providing a certain scientific basis for pipeline safety status evaluation. Utility Model Content

[0006] The purpose of the utility model is to propose a fixing device for accompanying optical cables under the protection of silicon tubes in view of the above-mentioned deficiencies in the prior art, which can realize the fixing of accompanying optical cables laid in the same trench of long-distance oil and gas pipelines under the protection of silicon tubes and determine the positional relationship among silicon tubes, optical cables and pipelines.

[0007] The utility model discloses a fixing device for accompanying optical cables under silicon tube protection, comprising a fixing sleeve, a plurality of fixing components, a plurality of pressure sensors and a plurality of pressure displays electrically connected to the pressure sensors;

[0008] The fixing assembly includes a retractable optical cable clamp and a screw, wherein the retractable optical cable clamp is located in the fixing sleeve, and one end of the screw passes through the fixing sleeve and is connected to the retractable optical cable clamp to drive the retractable optical cable clamp to approach or move away from the optical cable located in the fixing sleeve;

[0009] The pressure sensor is arranged on a side of the retractable optical cable clamp close to the optical cable and / or on a side of the fixed sleeve where the optical cable is placed, and the pressure display is arranged outside the fixed sleeve.

[0010] Furthermore, the retractable optical cable clamp includes an arc sleeve and two retractable arc blocks arranged at both ends of the arc sleeve, the arc sleeve is connected and fixed with the screws, and the pressure sensor is arranged on the inner arc side of the arc sleeve.

[0011] Furthermore, a plastic layer is provided on the inner wall of the fixed sleeve, and a plastic layer is laid on the inner arc side of the arc-shaped sleeve.

[0012] Furthermore, the fixing device also includes a plurality of ground-breaking fixing piles, and the fixing sleeve is fixed on the top of the ground-breaking fixing piles.

[0013] Furthermore, the ground-breaking fixing pile includes a main pile and a plurality of cylindrical barbs arranged on the main pile.

[0014] Furthermore, both ends of the fixing sleeve are provided with connectors connected to the silicon tube.

[0015] Furthermore, the connecting piece is cylindrical and is threadably connected to the fixing sleeve.

[0016] Furthermore, both ends of the fixing sleeve are provided with internal threads, the connecting piece is cylindrical, and one end of the connecting piece is provided with external threads.

[0017] Furthermore, the connecting piece is fixed to the fixing sleeve by welding.

[0018] Furthermore, an elastic layer is laid on the inner wall of the other end of the connecting piece, and the silicon tube is inserted into the other end of the connecting piece.

[0019] Beneficial effects:

[0020] The utility model can be used for the fixed constraint of the pipeline accompanying optical cable under the protection of the silicon tube, and solves the problem of delayed early warning monitoring caused by the non-cooperative deformation of the silicon tube and the accompanying optical cable in the early stage during the soil creep process of disasters such as landslides, ground collapse, and uneven soil settlement when the pipeline accompanying optical cable based on optical fiber sensing technology monitors long-distance oil and gas pipelines. The accompanying optical cable can be fixed in the fixed sleeve through a fixing component, that is, the accompanying optical cable is fixed in the silicon tube, so that the silicon tube and the accompanying optical cable are always deformed in coordination, thereby accurately evaluating the safety status of the pipeline.

[0021] The design of the device of the utility model takes into account the fixing of the accompanying optical cable at a certain distance, and combined with the labeling of the device, the disaster location can be located when a disaster occurs. The refinement of the interval distance can also realize the estimation of the length of the pipeline affected by the disaster.

[0022] The ground-breaking fixing piles at the bottom of the device of the utility model can determine the position relationship of the silicon tube, the optical cable and the pipeline, thereby avoiding the huge displacement of the position of the accompanying optical cable (silicon tube) due to geological activities, soil deformation and other factors, thereby affecting the pipeline early warning monitoring and the subsequent operation and maintenance of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a fixing device for accompanying optical cables protected by a silicon tube according to the utility model;

[0024] Figure 2 It is a schematic diagram of the fixed component workflow;

[0025] Figure 3 It is a top view of a fixing device for accompanying optical cables protected by a silicon tube according to the utility model;

[0026] Figure 4 It is a schematic diagram of the structure of the fixed component;

[0027] Figure 5 This is a schematic diagram of the structure of the ground-breaking fixed piles.

[0028] 1. Fixing sleeve; 2. Fixing assembly; 21. Retractable optical cable clamp; 211. Arc sleeve; 212. Arc block; 22. Screw; 3. Pressure sensor; 4. Pressure display; 5. Ground-breaking fixing pile; 51. Main pile; 52. Cylindrical barb; 6. Connector; 7. Silicon tube; 8. Sensor wire hole; 9. Optical cable. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] Example 1

[0031] like Figure 1 As shown, the utility model is a fixing device for accompanying optical cables under silicon tube protection, comprising a fixing sleeve 1, a plurality of fixing components 2, a plurality of pressure sensors 3 and a plurality of pressure displays 4 electrically connected to the pressure sensors 3;

[0032] The fixing assembly 2 includes a retractable optical cable clamp 21 and a screw 22 (which may be a hexagonal screw). The retractable optical cable clamp 21 is located in the fixing sleeve 1. One end of the screw 22 passes through the fixing sleeve 1 and is connected to the retractable optical cable clamp 21 to drive the retractable optical cable clamp 21 to approach or move away from the optical cable 9 located in the fixing sleeve 1.

[0033] The pressure sensor 3 is arranged on a side of the retractable optical cable clamp 21 close to the optical cable and / or on a side of the fixed sleeve 1 where the optical cable is placed, and the pressure display 4 is arranged outside the fixed sleeve 1.

[0034] The pressure sensor 3 is arranged in an arc shape on the inner wall of the retractable optical cable clamp 21 and / or the inner wall of the fixing sleeve 1, and can monitor the pressure of the retractable optical cable clamp 21 on the optical cable in real time when it is working, to prevent excessive pressure on the optical cable 9 during the process of fixing the optical cable, thereby blocking the transmission of the optical cable signal.

[0035] The fixing sleeve 1 is made of metal material, and its function is to protect the optical cable 9 similar to the silicon tube 7, and to form support at the bottom when the retractable optical cable clamp 21 is working. The inner wall of the fixing sleeve 1 is provided with a plastic layer to enhance the fixing effect, and the pressure sensor 3 is arranged in an arc shape on the plastic layer.

[0036] Two pressure displays 4 are arranged on the upper part of the fixed sleeve 1, and a sensor wire hole is arranged on the side to facilitate the connection of the sensor connection wire of the lower pressure sensor 3 with the pressure display 4, so as to monitor the dynamic process of pressure increase in real time. At the same time, after the sensor wire hole 8 is connected, the gap in the hole should be filled with a cementing material to ensure that the solid device is in a sealed state, thereby protecting the optical cable. The pressure display sets the pressure warning value of the corresponding model of the optical cable 9 in advance, which is conducive to the control of the pressure of the optical cable during the fixing process.

[0037] The fixing principle of the optical cable 9 is that by tightening the screw 22 downward, the retractable optical cable clamp 21 shrinks on both sides due to the constraint of the inner wall of the fixing sleeve 1 until it is in tight contact with the optical cable 9 and reaches the pressure warning value, and then the optical cable 9 is fixed to the lower side of the inner wall of the fixing sleeve 1.

[0038] The accompanying optical cable 9 is fixed in the fixing sleeve 1 through the fixing assembly 2, that is, the accompanying optical cable 9 is fixed in the silicon tube 7, so that the silicon tube 7 and the accompanying optical cable 9 are always deformed in coordination, thereby accurately evaluating the safety status of the pipeline.

[0039] Example 2

[0040] like Figure 1-4 As shown, the retractable optical cable clamp 21 includes an arc sleeve 211 and two retractable arc blocks 212 arranged at both ends of the arc sleeve 211 . The arc sleeve 211 is connected and fixed with the screws 22 . The pressure sensor 3 is arranged on the inner arc side of the arc sleeve 211 .

[0041] By tightening the screw 22 downward, the retractable cable clamp 21 is constrained by the inner wall of the fixed sleeve 1, causing the two arc blocks 212 to retract into the arc sleeve 211 until they are in tight contact with the optical cable 9 and reach the pressure warning value, thereby fixing the optical cable 9 to the lower side of the inner wall of the fixed sleeve 1.

[0042] The telescopic and retractable optical cable clamp 21 can be made of metal material, and a plastic layer is laid on the inner arc side of the arc sleeve 211, that is, the inner wall surface contacting the optical cable 9 is covered with a layer of plastic material with a high friction coefficient. The retractable optical cable clamp 21 is an arc-shaped long column structure, and its cross-section is semicircular, and the outer diameter is consistent with the inner diameter of the fixed sleeve 1. The retractable length is designed according to the model of the optical cable 9, which satisfies that there is still a certain retracted length after the telescopic and retractable optical cable clamp 21 contacts the outer wall of the optical cable 9, and it can stop only when the optical cable 9 fixing pressure warning value is reached to ensure the fixing effect of the optical cable.

[0043] Example 3

[0044] like Figure 5 As shown, the fixing device may also include a plurality of ground-breaking fixing piles 5, and the fixing sleeve 1 is fixedly mounted on the top of the ground-breaking fixing pile 5. The ground-breaking fixing pile 5 includes a main pile 51 and a plurality of cylindrical barbs 52 arranged on the main pile 51. The cylindrical barbs 52 are spirally distributed on the outside of the main pile 51, which can strengthen the contact between the main pile 51 and the lower soil, prevent the movement of the fixing device and even the entire system, and realize the determination of the positional relationship between the silicon tube 7, the optical cable 9, and the pipeline.

[0045] Example 4

[0046] like Figure 1 As shown, both ends of the fixing sleeve 1 may be provided with connecting pieces 6 connected to the silicon tube 7 .

[0047] There are many structures of the connecting member 6, which are not limited here. In this embodiment, the connecting member 6 can be cylindrical, and the connecting member 6 is threadedly connected to the fixed sleeve 1. Both ends of the fixed sleeve 1 can be provided with internal threads. The connecting member 6 is cylindrical, and one end of the connecting member 6 is provided with external threads. The connecting member 6 can also be fixed to the fixed sleeve 1 by welding.

[0048] The inner diameter of the connecting piece 6 is slightly larger than the outer diameter of the silicon tube 7. The specific size is adjusted according to the specifications of the silicon tube 7. It is installed on both sides of the fixed sleeve. The inner wall of the other end of the connecting piece 6 is paved with an elastic layer. The silicon tube 7 is inserted at the other end of the connecting piece 6 to achieve the connection and fixation between the connecting piece 6 and the silicon tube 7, which is conducive to the close connection between the silicon tube 7 and the overall fixing device.

[0049] A working method of a fixing device for accompanying optical cables under silicon tube protection in the embodiment is as follows:

[0050] S1. When laying the optical cable 9 in the same trench as the oil and gas pipeline under construction, the silicon tube 7 is cut at a certain distance after the silicon tube 7 is laid, and the silicon tube 7 is connected again by a connector to achieve a close connection between the fixing device and the silicon tube 7.

[0051] S2, use manual traction method or air blowing method to insert the optical cable 9 into the silicon tube 7, and then determine the position of the optical cable 9. Then use external force to drive the ground-breaking fixing pile 5 of the device into the soil to achieve the fixation of the position.

[0052] S3. Select the corresponding pressure warning value according to the construction optical cable model and set it in the pressure display 4 so that the workers can control the fixing degree during the later fixing process.

[0053] S4. Tighten the screw 22 downward using a wrench or other tool, and stop when the pressure reaches the warning value.

[0054] S5. Apply external force to the silicon tube 7 to determine the deformation. If the optical cable cannot move freely in the silicon tube 7 and the silicon tube 7 and the optical cable 9 are deformed cooperatively from the beginning to the end, the fixing effect is good.

[0055] S6. Use an optical fiber demodulator to connect an optical signal to the optical cable 9 to check the signal transmission of the optical cable 9. If the signal transmission is good, the installation is complete.

[0056] For matters not mentioned above, the prior art applies.

[0057] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the utility model. Those skilled in the art of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the utility model or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. made to the above implementation methods based on the technical essence of the utility model should be included in the protection scope of the utility model.

Claims

1. A fixing device for accompanying optical cables protected by silicon tubes, characterized in that: It includes a fixed sleeve, a plurality of fixed components, a plurality of pressure sensors and a plurality of pressure displays electrically connected to the pressure sensors; The fixing assembly includes a retractable optical cable clamp and a screw, wherein the retractable optical cable clamp is located in the fixing sleeve, and one end of the screw passes through the fixing sleeve and is connected to the retractable optical cable clamp to drive the retractable optical cable clamp to approach or move away from the optical cable located in the fixing sleeve; The pressure sensor is arranged on a side of the retractable optical cable clamp close to the optical cable and / or on a side of the fixed sleeve where the optical cable is placed, and the pressure display is arranged outside the fixed sleeve.

2. A fixing device for accompanying optical cables protected by a silicon tube as claimed in claim 1, characterized in that: The retractable optical cable clamp comprises an arc sleeve and two retractable arc blocks arranged at two ends of the arc sleeve, the arc sleeve is connected and fixed with the screws, and the pressure sensor is arranged on one side of the inner arc of the arc sleeve.

3. A fixing device for accompanying optical cables protected by a silicon tube as claimed in claim 2, characterized in that: The inner wall of the fixed sleeve is provided with a plastic layer, and the inner arc side of the arc sleeve is paved with a plastic layer.

4. A fixing device for accompanying optical cables protected by a silicon tube as claimed in any one of claims 1 to 3, characterized in that: The fixing device also includes a plurality of ground-breaking fixing piles, and the fixing sleeve is fixed on the top of the ground-breaking fixing piles.

5. A fixing device for accompanying optical cables protected by a silicon tube as claimed in claim 4, characterized in that: The ground-breaking fixing pile comprises a main pile and a plurality of cylindrical barbs arranged on the main pile.

6. A fixing device for accompanying optical cables protected by a silicon tube as claimed in any one of claims 1 to 3, characterized in that: Both ends of the fixed sleeve are provided with connecting pieces connected to the silicon tube.

7. A fixing device for accompanying optical cables protected by a silicon tube as claimed in claim 6, characterized in that: The connecting piece is cylindrical and is threadedly connected to the fixing sleeve.

8. A fixing device for accompanying optical cables protected by a silicon tube as claimed in claim 7, characterized in that: Both ends of the fixing sleeve are provided with internal threads, the connecting piece is cylindrical, and one end of the connecting piece is provided with external threads.

9. A fixing device for accompanying optical cables protected by a silicon tube as claimed in claim 6, characterized in that: The connecting piece is fixed to the fixing sleeve by welding.

10. A fixing device for accompanying optical cables protected by a silicon tube as claimed in claim 6, characterized in that: An elastic layer is laid on the inner wall of the other end of the connecting piece, and the silicon tube is inserted into the other end of the connecting piece.

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