Pipeline system monitoring device and pipeline system

Abstract

The utility model relates to a pipeline system monitoring device and a pipeline system. The device comprises a first fiber grating sensor module installed on a pipeline; the second fiber grating sensor module is mounted on the pipeline support hanger; the signal processing circuit is respectively connected with the first fiber bragg grating sensor module and the second fiber bragg grating sensor module; and the upper computer is connected with the signal processing circuit. By adopting the device, the monitoring efficiency of the pipeline system can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline monitoring, and in particular to a pipeline system monitoring device and a pipeline system. Background Art

[0002] The pipeline system includes pipelines and pipeline supports and hangers that bear the pipeline load. During operation, the pipeline system in a thermal power plant is in a state of high temperature and high pressure for a long time. The state of the pipeline and pipeline supports and hangers is very easy to change, so safety monitoring of the pipeline system is essential.

[0003] At present, the monitoring of pipeline systems mainly uses portable instruments to conduct manual inspections of pipeline systems before the start-up or overhaul of thermal power units, which has the problem of low monitoring efficiency of pipeline systems. Utility Model Content

[0004] Based on this, it is necessary to provide a pipeline system monitoring device and a pipeline system that can improve monitoring efficiency in response to the above technical problems.

[0005] In a first aspect, the present application provides a pipeline system monitoring device, which includes: a first fiber optic Bragg grating sensor module installed on a pipeline; a second fiber optic Bragg grating sensor module installed on a pipeline support bracket; a signal processing circuit, the signal processing circuit is respectively connected to the first fiber optic Bragg grating sensor module and the second fiber optic Bragg grating sensor module; and a host computer, the host computer is connected to the signal processing circuit.

[0006] In one embodiment, the first fiber grating sensor module includes: at least one first fiber grating temperature sensor for monitoring pipeline temperature and at least one fiber grating humidity sensor for monitoring pipeline humidity; or, at least one fiber grating temperature and humidity sensor for monitoring pipeline temperature and humidity.

[0007] In one embodiment, the second fiber Bragg grating sensor module includes: at least one second fiber Bragg grating temperature sensor for monitoring the temperature of the pipeline support and hanger; and at least one fiber Bragg grating vibration sensor for monitoring the vibration of the pipeline.

[0008] In one embodiment, the second fiber Bragg grating sensor module further includes: at least one fiber Bragg grating displacement sensor for monitoring pipeline displacement; and at least one fiber Bragg grating pressure sensor for monitoring pipeline thrust.

[0009] In one of the embodiments, when the first fiber grating sensor module includes multiple first fiber grating temperature sensors and multiple fiber grating humidity sensors, multiple first fiber grating temperature sensors and multiple fiber grating humidity sensors are equidistantly arranged on the outer wall of the pipe; when the first fiber grating sensor module includes multiple fiber grating temperature and humidity sensors, multiple fiber grating temperature and humidity sensors are equidistantly arranged on the outer wall of the pipe.

[0010] In one embodiment, each second fiber Bragg grating temperature sensor, each fiber Bragg grating vibration sensor, each fiber Bragg grating displacement sensor and each fiber Bragg grating pressure sensor are all arranged in the supporting point of the pipeline support bracket.

[0011] In one embodiment, the device also includes a first fiber optic cable module and a second fiber optic cable module; the first end of the first fiber optic cable module is connected to the first fiber optic Bragg grating sensor module, and the second end of the first fiber optic cable module is connected to the signal processing circuit; the first end of the second fiber optic cable module is connected to the second fiber optic Bragg grating sensor module, and the second end of the second fiber optic cable module is connected to the signal processing circuit.

[0012] In one embodiment, the signal processing circuit includes a fiber Bragg grating interrogator.

[0013] In one of the embodiments, the host computer is provided with data processing software for calculating the life value of the pipeline and the pipeline support and hanger.

[0014] In a second aspect, the present application further provides a pipeline system, including a pipeline, a pipeline support and hanger, and a pipeline system monitoring device as described in any one of the above-mentioned first aspects.

[0015] The above-mentioned pipeline system monitoring device includes a first fiber optic Bragg grating sensor module installed on the pipeline, a second fiber optic Bragg grating sensor module installed on the pipeline support bracket, a signal processing circuit and a host computer, wherein the signal processing circuit is connected to the first fiber optic Bragg grating sensor module and the second fiber optic Bragg grating sensor module respectively, and the host computer is connected to the signal processing circuit. In this way, the pipeline and the pipeline support bracket are monitored in real time through the first fiber optic Bragg grating sensor module and the second fiber optic Bragg grating sensor module, which not only has high monitoring accuracy but also saves time and labor, thereby improving the monitoring efficiency of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a pipeline system monitoring device in one embodiment;

[0018] Figure 2 A schematic diagram of the structure of a first fiber grating sensor module in an embodiment;

[0019] Figure 3 is a schematic structural diagram of a second fiber grating sensor module in an embodiment;

[0020] Figure 4 is a schematic structural diagram of another pipeline system monitoring device in one embodiment;

[0021] Figure 5 The present invention is a flow chart of a method for preparing a pipeline system monitoring device in an embodiment.

[0022] Reference numerals:

[0023] 100-first fiber Bragg grating sensor module, 101-first fiber Bragg grating temperature sensor, 102-fiber Bragg grating humidity sensor, 103-fiber Bragg grating temperature and humidity sensor;

[0024] 200 - second fiber Bragg grating sensor module, 201 - second fiber Bragg grating temperature sensor, 202 - fiber Bragg grating vibration sensor, 203 - fiber Bragg grating displacement sensor, 204 - fiber Bragg grating pressure sensor;

[0025] 300 - signal processing circuit, 400 - host computer, 500 - first optical fiber cable module, 600 - second optical fiber cable module. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0030] In the description of the present application, it should be understood that "electrical connection" in the present application can be understood as physical contact and electrical conduction between components; it can also be understood as a form in which different components in a circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals.

[0031] The steam-water pipelines in thermal power plants, especially the main steam pipelines, reheat steam pipelines and high-pressure feed water pipelines, are in a state of high temperature and high pressure for a long time during operation, and are very prone to deformation, cracks and leakage. Therefore, safety monitoring of the steam-water pipelines (such as pipeline thermal displacement, pipeline thrust, pipeline vibration and leakage, etc.) is essential.

[0032] At present, the monitoring of pipeline systems mainly involves using portable instruments to measure the stress and displacement of each pipeline support and hanger before the start-up or overhaul of thermal power units, and then adjusting the pipelines and pipeline supports and hangers based on the measured data. This method of using manual inspections to detect pipeline systems has problems such as large workload, long time consumption, high cost, and inability to perform continuous online inspections of pipelines and pipeline supports and hangers when the units are operating normally. Therefore, the current pipeline system monitoring efficiency is low.

[0033] In addition, based on the above problems, related technologies were searched and the following problems were found:

[0034] Some technical solutions only consider the continuous monitoring of temperature and pressure of steam-water pipelines. However, the displacement, thrust, vibration and leakage of pipelines are still temporarily detected by patrol personnel using portable instruments according to operational needs. Therefore, this type of technical solution still has the problem of low efficiency in pipeline system monitoring.

[0035] There are also some technical solutions, such as 201920053830.9 - An online detection system for steam-water pipe supports and hangers in large power plants. Various sensors, such as force sensors and displacement sensors, are installed on the online detection system of steam-water pipe supports and hangers to detect the stress and displacement of pipe supports and hangers in real time and send them to the data processing module to realize online real-time monitoring of the pipe support system. However, this type of technical solution only detects the stress and displacement of pipe supports and hangers, lacks monitoring of the entire pipeline system, and both force sensors and displacement sensors use traditional sensors, which have the problems of single function and susceptibility to interference.

[0036] Some other technical solutions, such as 201710136942.6 - An online monitoring device and method for pipeline leakage and corrosion based on fiber grating sensing, install fiber grating sensors on the online detection system of steam and water pipeline supports and hangers to measure the changes in pipeline annular strain in real time to determine whether the long straight pipeline is leaking, find the leakage location, and obtain uniform corrosion conditions. However, this type of technical solution only detects pipeline leakage and lacks monitoring of the entire pipeline system.

[0037] Based on this, it is necessary to propose effective technical means to solve the above problems. The technical solution of the present application and how the technical solution of the present application solves the above technical problems are described in detail with specific embodiments below. In addition, the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0038] In one embodiment, Figure 1 As shown, a schematic diagram of the structure of a pipeline system monitoring device is provided, the device comprising: a first fiber optic Bragg grating sensor module 100 installed on the pipeline; a second fiber optic Bragg grating sensor module 200 installed on the pipeline support bracket; a signal processing circuit 300, the signal processing circuit 300 is respectively connected to the first fiber optic Bragg grating sensor module 100 and the second fiber optic Bragg grating sensor module 200; and a host computer 400, the host computer 400 is connected to the signal processing circuit 300.

[0039] Optional, such as Figure 2 As shown, a structural schematic diagram of a first fiber grating sensor module is provided, and the first fiber grating sensor module 100 includes: at least one first fiber grating temperature sensor 101 for monitoring pipeline temperature and at least one fiber grating humidity sensor 102 for monitoring pipeline humidity; or, at least one fiber grating temperature and humidity sensor 103 for monitoring pipeline temperature and humidity.

[0040] like Figure 3As shown, a structural schematic diagram of a second fiber grating sensor module is provided, and the second fiber grating sensor module 200 includes: at least one second fiber grating temperature sensor 201 for monitoring the temperature of the pipeline support bracket; and at least one fiber grating vibration sensor 202 for monitoring the vibration of the pipeline.

[0041] The second fiber Bragg grating sensor module 200 further includes: at least one fiber Bragg grating displacement sensor 203 for monitoring pipeline displacement; and at least one fiber Bragg grating pressure sensor 204 for monitoring pipeline thrust.

[0042] Among them, the first fiber grating temperature sensor 101 can monitor the temperature of the pipeline in real time, send a first temperature signal to the signal processing circuit 300, the signal processing circuit 300 can demodulate the first temperature signal, and output a first digital signal. The host computer 400 can determine whether the pipeline is over-temperature according to the first digital signal. If it is over-temperature, it outputs a first alarm information so that the operation and maintenance personnel can handle it in time according to the first alarm information to avoid deformation of the pipeline. The first alarm information includes the identification of the first fiber grating temperature sensor 101, pipeline temperature parameters and other pipeline over-temperature information.

[0043] The fiber Bragg grating humidity sensor 102 can monitor the humidity of the pipeline in real time and send a humidity signal to the signal processing circuit 300. The signal processing circuit 300 can demodulate the humidity signal and output a second digital signal. The host computer 400 can determine whether the pipeline is leaking according to the second digital signal. If it is leaking, the second alarm information is output so that the operation and maintenance personnel can handle it in time according to the second alarm information to avoid a larger leakage of the pipeline. The second alarm information includes the identification of the fiber Bragg grating humidity sensor 102, pipeline humidity parameters and other pipeline leakage information.

[0044] The fiber Bragg grating temperature and humidity sensor 103 can monitor the humidity and moisture of the pipeline in real time, and send a first temperature signal and a humidity signal to the signal processing circuit 300. The signal processing circuit 300 can demodulate the first temperature signal and the humidity signal, and output a first digital signal and a second digital signal. The host computer 400 can judge whether the pipeline is over-temperature and leaking according to the first digital signal and the second digital signal. If it is over-temperature and / or leaking, the third alarm information is output, so that the operation and maintenance personnel can handle it in time according to the third alarm information to avoid deformation of the pipeline and / or greater leakage of the pipeline. The third alarm information includes pipeline information such as the identification of the fiber Bragg grating temperature and humidity sensor 103, pipeline temperature parameters and / or pipeline humidity parameters.

[0045] The second fiber grating temperature sensor 201 can monitor the temperature of the pipe support and hanger in real time, and send a second temperature signal to the signal processing circuit 300. The signal processing circuit 300 can demodulate the second temperature signal and output a third digital signal. The host computer 400 can determine whether the pipe support and hanger is over-temperature according to the third digital signal. If it is over-temperature, the fourth alarm information is output, so that the operation and maintenance personnel can handle it in time according to the fourth alarm information to avoid deformation of the pipe support and hanger. The fourth alarm information includes the identification of the second fiber grating temperature sensor 201, the temperature parameters of the pipe support and hanger, and other pipe support and hanger temperature information.

[0046] The fiber Bragg grating vibration sensor 202 can monitor the vibration of the pipeline in real time, and send a vibration signal to the signal processing circuit 300. The signal processing circuit 300 can demodulate the vibration signal and output a fourth digital signal. The host computer 400 can determine whether the pipeline is vibrating according to the fourth digital signal. If it is vibrating, or the vibration amplitude is greater than the amplitude threshold, the fifth alarm information is output, so that the operation and maintenance personnel can handle it in time according to the fifth alarm information to avoid the risk of the pipeline falling off due to instability. The fifth alarm information includes pipeline vibration information such as the identification of the fiber Bragg grating vibration sensor 202 and pipeline vibration parameters.

[0047] The fiber Bragg grating displacement sensor 203 can monitor the displacement of the pipeline in real time, and send a displacement signal to the signal processing circuit 300. The signal processing circuit 300 can demodulate the displacement signal and output a fifth digital signal. The host computer 400 can determine whether the pipeline moves according to the fifth digital signal. If it moves, or the displacement is greater than the displacement threshold, the sixth alarm information is output, so that the operation and maintenance personnel can handle it in time according to the sixth alarm information to avoid the risk of the pipeline falling off due to instability. The sixth alarm information includes the identification of the fiber Bragg grating displacement sensor 203, pipeline displacement parameters and other pipeline displacement information.

[0048] The fiber Bragg grating pressure sensor 204 can monitor the pressure of the pipeline on the pipeline support and hanger in real time, that is, the thrust of the pipeline support and hanger on the pipeline, and send a pressure signal to the signal processing circuit 300. The signal processing circuit 300 can demodulate the pressure signal and output a sixth digital signal. The host computer 400 can determine whether the pressure of the pipeline on the pipeline support and hanger is overpressure based on the sixth digital signal. If it is overpressure, the seventh alarm information is output so that the operation and maintenance personnel can handle it in time according to the seventh alarm information to avoid deformation of the pipeline support and hanger. The seventh alarm information includes the identification of the fiber Bragg grating pressure sensor 204, pipeline pressure parameters and other information about the pressure of the pipeline on the pipeline support and hanger.

[0049] The above-mentioned pipeline system monitoring device includes a first fiber grating sensor module 100 installed on the pipeline, a second fiber grating sensor module 200 installed on the pipeline support bracket, a signal processing circuit 300 and a host computer 400, wherein the signal processing circuit 300 is connected to the first fiber grating sensor module 100 and the second fiber grating sensor module 200 respectively, and the host computer 400 is connected to the signal processing circuit 300. In this way, the pipeline and the pipeline support bracket are monitored in real time through the first fiber grating sensor module 100 and the second fiber grating sensor module 200, which not only has high monitoring accuracy, but also saves time and labor, thereby improving the monitoring efficiency of the pipeline system. In addition, the first fiber grating sensor module 100 and the second fiber grating sensor module 200 realize the monitoring of the temperature and humidity of the pipeline, the pressure, vibration and displacement of the pipeline hanger, and the temperature of the pipeline support bracket, thereby realizing the monitoring of the complete pipeline system. Moreover, the grating sensor uses optical path for signal transmission, which will not be affected by electromagnetic interference from many large live equipment in the power plant. It has high monitoring accuracy and fast signal transmission speed. Therefore, the use of grating sensors can further improve the monitoring efficiency of the pipeline system.

[0050] In one of the embodiments, when the first fiber grating sensor module 100 includes a plurality of first fiber grating temperature sensors 101 and a plurality of fiber grating humidity sensors 102, the plurality of first fiber grating temperature sensors 101 and the plurality of fiber grating humidity sensors 102 are equidistantly arranged on the outer wall of the pipe; when the first fiber grating sensor module 100 includes a plurality of fiber grating temperature and humidity sensors 103, the plurality of fiber grating temperature and humidity sensors 103 are equidistantly arranged on the outer wall of the pipe.

[0051] When the first fiber grating sensor module 100 includes a first fiber grating temperature sensor 101 and a fiber grating humidity sensor 102, the first fiber grating temperature sensor 101 and the fiber grating humidity sensor 102 are arranged at the center position on the outer wall of the pipe; when the first fiber grating sensor module 100 includes a fiber grating temperature and humidity sensor 103, the fiber grating temperature and humidity sensor 103 is arranged at the center position on the outer wall of the pipe.

[0052] The first fiber grating temperature sensor 101, the fiber grating humidity sensor 102 and the fiber grating temperature and humidity sensor 103 are all wall-attached fiber grating sensors, so they can be directly attached to the outer wall of the pipeline.

[0053] The first fiber Bragg grating temperature sensor may specifically be a temperature-compensated fiber Fizeau cavity sensor of a multi-mode fiber Bragg grating.

[0054] In one embodiment, each second fiber Bragg grating temperature sensor 201, each fiber Bragg grating vibration sensor 202, each fiber Bragg grating displacement sensor 203 and each fiber Bragg grating pressure sensor 204 are all arranged at a supporting point of the pipeline support bracket.

[0055] Among them, the second fiber grating temperature sensor 201, the fiber grating vibration sensor 202, the fiber grating displacement sensor 203 and the fiber grating pressure sensor 204 are all wall-mounted fiber grating sensors, so they can be directly attached to the pipeline support bracket.

[0056] The second fiber Bragg grating temperature sensor 201 may specifically be a temperature-compensated fiber Fizeau cavity sensor of a multi-mode fiber Bragg grating.

[0057] In one embodiment, if Figure 4 As shown, another pipeline system monitoring device is provided, which also includes a first optical fiber cable module 500 and a second optical fiber cable module 600; the first end of the first optical fiber cable module 500 is connected to the first optical fiber grating sensor module 100, and the second end of the first optical fiber cable module 500 is connected to the signal processing circuit 300; the first end of the second optical fiber cable module 600 is connected to the second optical fiber grating sensor module 200, and the second end of the second optical fiber cable module 600 is connected to the signal processing circuit 300.

[0058] The number of optical fiber cables in the first optical fiber cable module 500 is the same as the total number of the first optical fiber Bragg grating temperature sensor 101 and the optical fiber Bragg grating humidity sensor 102 in the first optical fiber Bragg grating sensor module 100. The number of optical fiber cables in the second optical fiber cable module 600 is the same as the total number of the second optical fiber Bragg grating temperature sensor 201, the optical fiber Bragg grating vibration sensor 202, the optical fiber Bragg grating displacement sensor 203 and the optical fiber Bragg grating pressure sensor 204 in the second optical fiber Bragg grating sensor module 200.

[0059] The first optical fiber cable module 500 is used to transmit signals between the first optical fiber grating sensor module 100 and the signal processing circuit 300 .

[0060] The second optical fiber cable module 600 is used to transmit signals between the second optical fiber grating sensor module 200 and the signal processing circuit 300 .

[0061] In one embodiment, the signal processing circuit 300 includes a fiber Bragg grating interrogator.

[0062] Among them, the above-mentioned first temperature signal, humidity signal, second temperature signal, vibration signal, displacement signal, and pressure signal are all analog signals. The fiber grating demodulator can demodulate these analog signals to obtain the above-mentioned first digital signal, second digital signal, third digital signal, fourth digital signal, fifth digital signal, and sixth digital signal, so that the host computer can process and analyze these digital signals.

[0063] In addition, it can be understood that the signal processing circuit 300 can also store and analyze the above analog signals and digital signals.

[0064] In one of the embodiments, the host computer is provided with data processing software for calculating the life value of the pipeline and the pipeline support and hanger.

[0065] Among them, the data processing software can output the working status parameter trend chart of the pipeline and the pipeline support and hanger, as well as the life value of the pipeline and the pipeline support and hanger based on historical data, pre-input pipeline inner wall thickness, pipeline material, current expansion coefficient, pipeline inner diameter and the received first digital signal, second digital signal, third digital signal, fourth digital signal, fifth digital signal and sixth digital signal.

[0066] The data processing software can also automatically plan the configuration of the entire pipeline and pipeline supports and hangers based on the pre-configured model of the pipeline and pipeline supports and hangers, and output a configuration report of the pipeline and pipeline supports and hangers for reference by operation and maintenance personnel to adjust the configuration of the pipeline and pipeline supports and hangers.

[0067] In this embodiment, the data processing software can further ensure the safe and reliable operation of the unit, and can also predict the equipment replacement period for the power plant in advance, reduce safety hazards and unnecessary downtime accidents, and escort the safe operation of the power plant. In addition, the working status parameter trend chart is convenient for operation and maintenance personnel to observe and adjust in time to ensure the safety of the unit.

[0068] In one embodiment, the present application further provides a pipeline system, including a pipeline, a pipeline support and hanger, and the pipeline system monitoring device in the above embodiment.

[0069] The connection relationship between the pipeline, the pipeline support and hanger, and the pipeline system monitoring device has been explained in detail in the above embodiments and will not be repeated here.

[0070] In one embodiment, Figure 5 As shown, the present application also provides a flow chart of a preparation method of a pipeline system monitoring device, the preparation method comprising:

[0071] Step 501, installing the first fiber grating sensor module on the pipeline, and installing the second fiber grating sensor module on the pipeline support bracket.

[0072] Step 502: Connect the signal processing circuit to the first fiber grating sensor module and the second fiber grating sensor module respectively.

[0073] Step 503, connecting the host computer to the signal processing circuit.

[0074] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A pipeline system monitoring device, characterized in that: The device comprises: A first fiber grating sensor module installed on the pipeline; A second fiber grating sensor module installed on the pipeline support bracket; A signal processing circuit, wherein the signal processing circuit is connected to the first fiber grating sensor module and the second fiber grating sensor module respectively; A host computer is connected to the signal processing circuit.

2. The device according to claim 1, characterized in that The first fiber grating sensor module comprises: at least one first fiber Bragg grating temperature sensor for monitoring the temperature of the pipeline and at least one fiber Bragg grating humidity sensor for monitoring the humidity of the pipeline; or, At least one fiber grating temperature and humidity sensor for monitoring the temperature and humidity of the pipeline.

3. The device according to claim 1, characterized in that The second fiber grating sensor module comprises: At least one second fiber grating temperature sensor for monitoring the temperature of the pipeline support and hanger; At least one fiber grating vibration sensor for monitoring vibration of the pipeline.

4. The device according to claim 3, characterized in that The second fiber grating sensor module also includes: at least one fiber Bragg grating displacement sensor for monitoring displacement of the pipeline; At least one fiber grating pressure sensor for monitoring the thrust of the pipeline.

5. The device according to claim 2, characterized in that When the first fiber Bragg grating sensor module includes a plurality of the first fiber Bragg grating temperature sensors and a plurality of the fiber Bragg grating humidity sensors, a plurality of the first fiber Bragg grating temperature sensors and a plurality of the fiber Bragg grating humidity sensors are equidistantly arranged on the outer wall of the pipeline; When the first fiber grating sensor module includes a plurality of fiber grating temperature and humidity sensors, the plurality of fiber grating temperature and humidity sensors are arranged at equal intervals on the outer wall of the pipeline.

6. The device according to claim 4, characterized in that Each of the second fiber Bragg grating temperature sensors, each of the fiber Bragg grating vibration sensors, each of the fiber Bragg grating displacement sensors and each of the fiber Bragg grating pressure sensors are arranged at a supporting point of the pipeline support bracket.

7. The device according to claim 1, characterized in that The device also includes a first fiber optic cable module and a second fiber optic cable module; The first end of the first optical fiber cable module is connected to the first optical fiber grating sensor module, and the second end of the first optical fiber cable module is connected to the signal processing circuit; The first end of the second optical fiber cable module is connected to the second optical fiber grating sensor module, and the second end of the second optical fiber cable module is connected to the signal processing circuit.

8. The device according to claim 1, characterized in that The signal processing circuit includes a fiber grating demodulator.

9. The device according to claim 1, characterized in that The host computer is provided with data processing software for calculating the life value of the pipeline and the pipeline support and hanger.

10. A pipeline system, characterized in that: The invention comprises a pipeline, a pipeline support and hanger, and a pipeline system monitoring device as claimed in any one of claims 1 to 9.

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