GIS pipeline buttress settlement monitoring sensing optical cable fixing device and multi-point measurement system
By laying a spring-connected pulley supporting sensor cable on the GIS pipeline piers, combined with a multi-point measurement system, the problem of insufficient timeliness and accuracy of pipeline settlement monitoring in the prior art is solved, and high-precision and long-term sustainability are achieved Monitor the effect.
Patent Information
- Application Number
- CN202420361654.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-27
AI Technical Summary
The existing pipeline settlement monitoring methods are susceptible to external factors, and point-based data acquisition leads to insufficient timeliness and accuracy, making it difficult to reflect dynamic changes in real time.
The GIS pipeline pier settlement monitoring sensor cable fixing device is used to support the sensor cable through a spring-connected pulley to reflect the settlement deformation. Combined with a multi-point measurement system, it ensures that the sensor cable is arranged on the pulley above and below the GIS pipeline pier. Implement distributed monitoring.
It realizes high-precision, long-term and continuous pipeline settlement monitoring with simple and reliable structure, convenient detection, flexible use, and can accurately reflect the settlement deformation amount and improve the monitoring timeliness and accuracy.
Smart Images
Figure CN222166096U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of optical fiber sensing, and more specifically, to a GIS pipeline pier settlement monitoring sensor optical cable fixing device and a multi-point measurement system. Background Art
[0002] At present, the traditional methods used in pipeline settlement monitoring include point measurement methods such as GPS measurement and leveling measurement. These conventional pipeline settlement monitoring methods are mature in technology, widely used, and simple to operate, but they are also easily affected by external factors. In addition, the above monitoring methods are mostly point data collection forms, and their limited location distribution leads to limited engineering conditions that can be reflected by the data. They do not have dynamic change characteristics and have poor timeliness.
[0003] Fiber Bragg grating sensing technology is a technology that uses the wavelength drift of gratings under the influence of external factors to achieve quasi-distributed sensing and measurement. Compared with the above monitoring technologies, distributed fiber optic sensing monitoring technology has the advantages of distributed, long-distance, and high precision, and can monitor pipelines for a long time, continuously, and with high precision. However, when monitoring with traditional distributed fiber optic sensing monitoring methods, the demodulator demodulates the strain changes of the roadbed section under test sensed and transmitted by the optical fiber, that is, the micro-strain of each point in the loop where the optical fiber is located, rather than the actual required settlement deformation. Utility Model Content
[0004] The purpose of this application is to provide a GIS pipeline pier settlement monitoring sensor cable fixing device and a multi-point measurement system, which can respond to the settlement deformation through a sensor cable supported by a pulley connected by a spring, and has the advantages of simple and reliable structure, convenient detection, and flexible use.
[0005] This application is implemented as follows:
[0006] The present application provides a GIS pipeline pier settlement monitoring sensor optical cable fixing device, which includes:
[0007] Mounting base, used to connect GIS pipeline buttress;
[0008] A base, connected to the mounting base;
[0009] A pair of springs are symmetrically arranged on the upper and lower sides of the base and are respectively connected to the top and bottom of the base;
[0010] A pair of pulleys are respectively connected to one end of the two springs away from the base and are used to press the sensing optical cable.
[0011] In some optional embodiments, the mounting base is connected to the GIS pipe buttress by a plurality of bolts.
[0012] In some optional embodiments, the base is connected to the middle of the mounting base.
[0013] The present application provides a GIS pipeline pier settlement multi-point measurement system, which includes at least two of the above-mentioned GIS pipeline pier settlement monitoring sensor cable fixing devices, a sensor optical cable, a fiber input tube and a fiber output tube. One end of the sensor optical cable passes through the fiber input tube and is alternately wound around the pulleys above and below each GIS pipeline pier settlement monitoring sensor optical cable fixing device, and then is alternately wound around the pulleys above and below each GIS pipeline pier settlement monitoring sensor optical cable fixing device in the opposite direction until it passes through the fiber output tube.
[0014] In some optional embodiments, the sensing optical cables are located in the same vertical plane.
[0015] In some optional embodiments, the fiber inlet tube and the fiber outlet tube are arranged horizontally spaced apart from each other.
[0016] In some optional implementation schemes, the fiber inlet tube and the fiber outlet tube are located at the same height as the pulleys above and below the fixing devices for the settlement monitoring sensing optical cables of each GIS pipeline pier, respectively.
[0017] In some optional implementation schemes, the mounting bases of the sensor optical cable fixing devices for monitoring the settlement of each GIS pipeline pier are located at the same height.
[0018] The beneficial effects of the present application are as follows: the GIS pipeline pier settlement monitoring sensor cable fixing device provided by the present application comprises a mounting seat for connecting the GIS pipeline pier, a base connected to the mounting seat, a pair of springs symmetrically arranged on the upper and lower sides of the base and respectively connected to the top and bottom of the base, and a pair of pulleys respectively connected to the ends of the two springs away from the base, and the pulleys are respectively used to press the sensor cable. The GIS pipeline pier settlement monitoring sensor cable fixing device and multi-point measurement system provided by the present application can reflect the settlement deformation through the sensor cable supported by the pulley connected to the spring, and has the advantages of simple and reliable structure, convenient detection, and flexible use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of the structure of a GIS pipeline buttress settlement multi-point measurement system for measuring GIS pipeline buttress settlement provided in an embodiment of the present application;
[0021] Figure 2A schematic diagram of the structure of a sensor cable fixing device for monitoring settlement of a GIS pipeline pier provided in an embodiment of the present application.
[0022] In the figure: 100, mounting seat; 110, base; 120, spring; 130, pulley; 140, bolt; 200, GIS pipeline buttress; 210, pipeline support; 220, GIS pipeline; 300, sensor optical cable; 310, fiber inlet tube; 320, fiber outlet tube. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0027] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0029] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0030] The features and performances of the GIS pipeline buttress settlement monitoring sensor optical cable fixing device and multi-point measurement system of the present application are further described in detail below in conjunction with the embodiments.
[0031] like Figure 1 As shown, an embodiment of the present application provides a GIS pipeline pier settlement monitoring sensor cable fixing device, which is used to support the sensor cable 300 to measure the settlement of the GIS pipeline 220, and includes a square mounting seat 100, a base 110 connected to the middle of one side of the mounting seat 100, a pair of springs 120 and a pair of pulleys 130. The mounting seat 100 can be connected to the GIS pipeline pier 200 by four bolts 140, and the two springs 120 are symmetrically arranged on the upper and lower sides of the base 110 and the ends are respectively connected to the top and bottom of the base 110; the two pulleys 130 are respectively connected to the ends of the two springs 120 away from the base 110, and are used to press the sensor cable 300 respectively.
[0032] like Figure 2As shown, the embodiment of the present application also provides a GIS pipeline pier settlement multi-point measurement system, which includes four of the above-mentioned GIS pipeline pier settlement monitoring sensor cable fixtures, a sensor cable 300, a fiber inlet tube 310 and a fiber outlet tube 320, the fiber inlet tube 310 and the fiber outlet tube 320 are arranged horizontally at intervals from top to bottom, one end of the sensor cable 300 passes through the fiber inlet tube 310 and is alternately wound around the pulleys 130 above and below the four GIS pipeline pier settlement monitoring sensor cable fixtures, and then reversely alternately wound around the pulleys 130 above and below each GIS pipeline pier settlement monitoring sensor cable fixture until it passes through the fiber outlet tube 320, and the sensor cable 300 is located in the same vertical plane. The fiber inlet tube 310 and the fiber outlet tube 320 are respectively located at the same height as the pulleys 130 above and below each GIS pipeline pier settlement monitoring sensor cable fixture.
[0033] When the GIS pipeline buttress settlement multi-point measurement system provided in the embodiment of the present application measures the settlement of the GIS pipeline 220, firstly, the mounting seats 100 of the four GIS pipeline buttress settlement monitoring sensor cable fixing devices are respectively connected to the sides of the four GIS pipeline buttresses 200 by bolts 140, so that the mounting seats 100 of the mounting seats 100 of the GIS pipeline buttress settlement monitoring sensor cable fixing devices are located at the same height, and the top of each GIS pipeline buttress 200 is connected to a pipeline support 210 supporting the GIS pipeline 220;
[0034] Pass one end of the sensor optical cable 300 through the fiber entry tube 310 and wrap around the pulley 130 above the first GIS pipeline pier settlement monitoring sensor cable fixture, the pulley 130 below the second GIS pipeline pier settlement monitoring sensor cable fixture, the pulley 130 above the third GIS pipeline pier settlement monitoring sensor cable fixture, and the pulley 130 below the fourth GIS pipeline pier settlement monitoring sensor cable fixture. Then, reversely wrap around the pulley 130 above the fourth GIS pipeline pier settlement monitoring sensor cable fixture, the pulley 130 below the third GIS pipeline pier settlement monitoring sensor cable fixture, the pulley 130 above the second GIS pipeline pier settlement monitoring sensor cable fixture, and the pulley 130 below the first GIS pipeline pier settlement monitoring sensor cable fixture, and then pass through the fiber exit tube 320.
[0035] Adjust each pulley 130 according to the specific position of the GIS pipeline buttress 200, try to make the sensing optical cable 300 in the same plane, and make the two ends of the sensing optical cable 300 on the same horizontal line;
[0036] According to the previously calibrated data, the sensing optical cable 300 is tightened to compress the springs 120 connected to each pulley 130, so that the expansion and contraction amount of each spring 120 reaches the specified position, so that the sensing optical cable 300 is subjected to the same amount of prestress to ensure the accuracy of subsequent calculation results.
[0037] The principle of settlement monitoring of the optical sensor cable 300 is that settlement of the GIS pipeline 220 will cause the GIS pipeline buttress 200 to sink and deform. Figure 2 As shown, the fiber inlet tube 310 and the fiber outlet tube 320 are numbered a1 and a2, b, c, and d are the numbers of three GIS pipeline piers 200 arranged in sequence away from the fiber inlet tube 310 and the fiber outlet tube 320, b1 / b2, c1 / c2, and d1 / d2 are the numbers of the upper pulley 130 and the lower pulley 130 of the GIS pipeline pier settlement monitoring sensor cable fixing device corresponding to the three GIS pipeline piers 200, respectively. It is stipulated that the optical cable signal forms a loop along the transmission route of the sensor optical cable 300 through a1-b1-c2-d1...d2-c1-b2-a2, and b1-c2-d1 is the lower optical cable in the loop, d2-c1-b2 is the upper optical cable in the loop, the spacing between the two upper and lower pulleys 130 is h (i.e., the distance between c1 and c2), and the distance between two adjacent pulleys 130 is x (i.e., the distance between c1 and d1). In the initial state, the sensing optical cable 300 at any position in the loop is in a taut and non-relaxed state. In the case that no initial settlement deformation occurs, the length l of the sensing optical cable 300 between two adjacent GIS pipeline piers 200 is:
[0038]
[0039] Assuming that the GIS pipeline buttress 200c has settled, and its settlement value is Δh, the length of the sensing optical cable between two adjacent GIS pipeline buttresses 200 after settlement is:
[0040]
[0041]
[0042] In the above formula, l1 is the length of the optical cable c2-d1 after settlement; l2 is the length of the optical cable d2-c1 after settlement.
[0043] By using formula (2) and formula (3) to calculate the difference between formula (1), we can know that l1-l≥0, l2-l≤0, and the equality is established only when Δh=0. From l2≤l, we can know that the upper optical cable is in a relaxed state; from l1≥l, we can know that the lower optical cable is in a tight state.
[0044] According to formula (1), formula (2) and formula (3), the corresponding strains ε1 and ε2 of the upper optical cable and the lower optical cable can be calculated as follows:
[0045]
[0046]
[0047] From the above calculation, it can be known that ε1≥ε2. When one of the two adjacent GIS pipeline piers 200 settles, the upper optical cable within the settlement range is in a relaxed state, and the lower optical cable within the settlement range is in a tight state. That is, when settlement occurs, the strain response of the lower optical cable within the settlement range is better than that of the upper optical cable. Therefore, the settlement amount Δh at this time can be inferred as:
[0048]
[0049] The GIS pipeline buttress settlement monitoring sensor optical cable fixing device and multi-point measurement system provided in the embodiment of the present application adopts a mounting seat 100 connected to the GIS pipeline buttress 200 to fix the base 110, and the top and bottom of the base 110 are respectively connected and supported by springs 120. The pulleys 130 are used to support and guide the sensor optical cable 300 extending along the bidirectional zigzag shape. When the GIS pipeline buttress 200 settles, the change amount of the spring 120 can ensure that the sensor optical cable 300 initially fixed on the GIS pipeline buttress 200 The cables are subjected to the same amount of prestress, thereby ensuring the accuracy of measurement; the pulley 130 connected to the top of the spring 120 increases the contact area with the support of the sensor optical cable 300, reduces light loss and also helps to protect the coating of the sensor optical cable 300 from friction damage. At the same time, the pulley 130 can also guide and direct sensor optical cables 300 of different specifications to improve the scope of application. When the GIS pipeline pier 200 is not in the same straight line, the direction of the pulley 130 can be appropriately adjusted to guide the layout of the sensor optical cable 300, thereby effectively improving the flexibility of use.
[0050] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
Claims
1. A GIS pipeline pier settlement monitoring sensor cable fixing device, It is characterized in that It includes: Mounting base, used to connect GIS pipeline buttress; A base, connected to the mounting seat; A pair of springs, symmetrically arranged on the upper and lower sides of the base and respectively connected to the top and bottom of the base; A pair of pulleys are respectively connected to one end of the two springs away from the base and are used to press the sensing optical cable.
2. The GIS pipeline buttress settlement monitoring sensor optical cable fixing device according to claim 1, It is characterized in that The mounting seat is connected to the GIS pipeline buttress through a plurality of bolts.
3. The GIS pipeline buttress settlement monitoring sensor optical cable fixing device according to claim 1, It is characterized in that The base is connected to the middle of the mounting seat.
4. A GIS pipeline pier settlement multi-point measurement system, It is characterized in that It comprises at least two GIS pipeline pier settlement monitoring sensor cable fixing devices, a sensor optical cable, a fiber inlet tube and a fiber outlet tube as described in any one of claims 1 to 3. One end of the sensor optical cable passes through the fiber inlet tube and is alternately wound around the pulleys above and below each of the GIS pipeline pier settlement monitoring sensor cable fixing devices, and then is alternately wound around the pulleys above and below each of the GIS pipeline pier settlement monitoring sensor cable fixing devices in reverse until it passes through the fiber outlet tube.
5. The GIS pipeline buttress settlement multi-point measurement system according to claim 4, It is characterized in that The sensing optical cables are located in the same vertical plane.
6. The GIS pipeline buttress settlement multi-point measurement system according to claim 4, It is characterized in that The fiber inlet pipe and the fiber outlet pipe are arranged horizontally and spaced apart from each other vertically.
7. The GIS pipeline buttress settlement multi-point measurement system according to claim 4, It is characterized in that The fiber inlet tube and the fiber outlet tube are respectively located at the same height as the pulleys above and below each GIS pipeline pier settlement monitoring sensor cable fixing device.
8. The GIS pipeline buttress settlement multi-point measurement system according to claim 4, It is characterized in that The mounting seats of the respective GIS pipeline pier settlement monitoring sensor optical cable fixing devices are located at the same height.