Mounting structure of strain gauge on pipeline

Abstract

The utility model discloses an installation structure of a strain gauge on a pipeline, comprising an installation area arranged on a gas pipeline, the installation area is provided with an installation support used for installing an optical fiber strain gauge, and the installation area is provided with an anti-corrosion assembly and a protection assembly which are used for protecting and installing the optical fiber strain gauge and the support. The beneficial effects of the utility model are that the structure fills the gap of the installation structure of the optical fiber strain gauge on the gas pipeline, improves the environmental adaptability, prolongs the service life of the optical fiber strain gauge, and improves the measurement precision.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber strain gauge installation, in particular to an installation structure of a strain gauge on a pipeline. Background Art

[0002] The pressure levels of urban gas pipelines are getting higher and higher, and the interaction between high-pressure gas pipelines and municipal facilities is becoming more and more complex. The task of ensuring the safe operation of gas pipelines is becoming more arduous. Advanced scientific and technological methods are urgently needed to monitor gas pipelines to ensure that the pipeline operation status is safe and controlled.

[0003] Stress change is one of the important factors affecting pipeline safety. Ensuring that pipeline stress is within a safe range under various combined conditions is an important task for pipeline engineers and safety engineers. During the operation of urban gas pipelines, the stress will change significantly due to external factors (temperature, pressure). Under the action of stress, the pipeline and the fixed support may be displaced. In places where stress is concentrated, thermal elongation of the pipeline structure may even occur, posing a safety risk.

[0004] At present, the main technologies for pipeline stress monitoring include vibrating string sensors, fiber optic sensing technology, and resistance strain gauge technology. Fiber optic sensing technology is not subject to electromagnetic interference, has high test accuracy, and does not require power supply. It is the development trend of pipeline stress monitoring technology. In fiber optic stress monitoring technology, the installation of fiber optic strain gauges on pipelines is one of the key technologies, which directly affects the measurement accuracy, pipeline anti-corrosion quality, and operating life.

[0005] Existing optical fiber strain gauges are widely used in steel structures, dams, tunnels and other fields, but there are no effective installation examples on gas pipelines.

[0006] Therefore, it is necessary to propose a strain gauge installation structure on the pipeline, which solves the installation problem on the curved surface of the pipeline and fills the gap in the industry; at the same time, the anti-corrosion method of the heterogeneous structure is adopted to improve its environmental adaptability, thereby increasing the service life and measurement accuracy of the optical fiber strain gauge. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and proposes a structure for installing a strain gauge on a pipeline. Compared with the existing optical fiber strain gauge installation structure, the structure improves the environmental adaptability thereof, thereby increasing the service life and measurement accuracy of the optical fiber strain gauge.

[0008] The purpose of the utility model is to achieve a strain gauge installation structure on a pipeline through the following technical scheme, including an installation area set on the gas pipeline, a mounting bracket for installing the optical fiber strain gauge is set on the installation area, and an anti-corrosion component and a protection component for protecting the optical fiber strain gauge and the bracket are set on the installation area.

[0009] The mounting bracket is welded and arranged on the mounting area.

[0010] The viscous anti-corrosion component comprises a viscous paste and a viscoelastic tape that wrap the mounting bracket and the optical fiber strain gauge, and the viscoelastic tape is externally mounted as a protective component.

[0011] The protection component includes a safety protection belt and a protection cover which are arranged on the outside of the anti-corrosion component. The protection cover is a protection layer arranged on the outside of the protection belt.

[0012] The protective belt is made of epoxy glass fiber reinforced plastic.

[0013] The protective cover is a clamp made of thin-skin stainless steel.

[0014] The installation area is formed by grinding the gas pipeline.

[0015] The beneficial effects of the utility model are:

[0016] (1) The installation problem of optical fiber strain gauges on the curved surface of urban gas pipelines was solved.

[0017] (2) It solves the anti-corrosion problem of optical fiber strain gauges in complex environments, prolongs the service life of optical fiber strain gauges, solves the problem of local corrosion of pipelines, and reduces the risk of pipeline operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the utility model;

[0019] Figure 2 A top view of the mounting bracket connection;

[0020] In the figure, 1-gas pipeline, 2-installation area, 3-optical fiber strain gauge, 4-installation bracket, 5-viscous paste, 6-viscoelastic tape, 7-protective tape, 8-protective cover. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] It is to be noted that the concepts of directions “left”, “right”, “up”, “down”, “front”, “back”, “inside” and “outside” in the following schemes are all relative directions and will not be listed one by one here.

[0023] A structure for installing a strain gauge on a pipeline, referring to Figure 1 and Figure 2, including an installation area 2 set on the gas pipeline 1. The installation area 2 is formed by grinding on the gas pipeline 1 by an operator. An installation bracket 4 is set on the installation area 2 by welding. An optical fiber strain gauge 3 is installed on the installation bracket 4.

[0024] The installation area 2 is also provided with a protective belt 7 covering the outside of the installation bracket 4. The protective belt 7 is made of epoxy fiberglass. The outside of the installation bracket 4 is provided with a viscous paste 5 wrapped thereon. A viscoelastic tape 6 is provided between the viscous paste 5 and the protective belt 7. The viscoelastic tape 6 is tightly wound around the viscous paste 5, and the protective belt 7 is tightly wound around the viscoelastic tape 6. A protective cover 8 is provided on the outer surface of the protective belt 7. The protective cover 8 is a clamp made of thin-skinned stainless steel.

[0025] The viscous paste 5, the viscoelastic tape 6, the protective tape 7, the protective cover 8, etc. are provided to solve the corrosion problem of the optical fiber strain gauge 3 after long-term use, optimize the installation environment of the optical fiber strain gauge 3, and extend the service life of the optical fiber strain gauge 3. In addition, the installation area 2 is formed by grinding, and the installation bracket 4 is provided by welding, so that the optical fiber strain gauge 3 can be installed on the curved surface of the gas pipeline 1.

[0026] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above description or the technology or knowledge in the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A structure for installing a strain gauge on a pipeline, characterized in that: The invention comprises an installation area (2) arranged on a gas pipeline (1), wherein an installation bracket (4) for installing an optical fiber strain gauge (3) is arranged on the installation area (2), and an anti-corrosion component and a protective component for protecting the optical fiber strain gauge (3) and the bracket (4) are arranged on the installation area (2).

2. The installation structure of a strain gauge on a pipeline according to claim 1, characterized in that: The mounting bracket (4) is welded and arranged on the mounting area (2).

3. The installation structure of a strain gauge on a pipeline according to claim 1, characterized in that: The anti-corrosion component comprises a viscous paste (5) wrapping a mounting bracket (4), an optical fiber strain gauge (3), and a viscoelastic tape (6), wherein the viscoelastic tape (6) is tightly wound around the viscous paste (5).

4. The installation structure of a strain gauge on a pipeline according to claim 1, characterized in that: The protection component comprises a safety protection belt (7) arranged outside the anti-corrosion component, and a protection cover (8) is arranged outside the protection belt (7).

5. The installation structure of a strain gauge on a pipeline according to claim 4, characterized in that: The safety protection belt (7) is made of epoxy glass fiber reinforced plastic.

6. The installation structure of a strain gauge on a pipeline according to claim 4, characterized in that: The protective cover (8) is a clamp made of thin-skinned stainless steel.

7. The installation structure of a strain gauge on a pipeline according to claim 1, characterized in that: The installation area (2) is formed by grinding the gas pipeline (1).

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