A high energy pipeline leak monitoring device

Abstract

The application provides a high-energy pipeline leakage monitoring device, relates to the technical field of pipeline detection, and comprises an industrial computer, a laser, an optical signal detector and a plurality of detection units, the detection unit comprises a temperature measuring optical fiber and a guided wave sensor, the temperature measuring optical fiber and the guided wave sensor are arranged between a pipeline outer wall and a heat insulation layer; the laser emits a detection optical signal to the temperature measuring optical fiber; the optical signal detector receives the optical signal emitted by the temperature measuring optical fiber; and the industrial computer is used for analyzing the optical signal received by the optical signal detector and the guided wave signal received by the guided wave sensor. The high-energy pipeline leakage monitoring device provided by the application simultaneously arranges the temperature measuring optical fiber and the guided wave sensor between the heat insulation layer and the pipeline outer wall, and the guided wave sensor senses and detects the axial physical defects of the pipeline. The industrial computer realizes the analysis of the optical signal received by the optical signal detector and the guided wave signal received by the guided wave sensor, and provides guidance for the multi-dimensional analysis of pipeline damage and repair schemes.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, and in particular to a high-energy pipeline leak monitoring device. Background Technology

[0002] High-energy pipelines in large power systems are used to transport high-temperature, high-pressure steam, water, and other fluids to achieve the system's functions. However, due to the thermal conductivity of the materials used in these pipelines, their walls are constantly at high temperatures. This temperature difference with the surrounding environment causes the fluid's energy to dissipate as heat, affecting system performance. Furthermore, the high temperature can cause burns to nearby workers. Therefore, special insulation layers are often used to cover them. Glass wool and its products have excellent thermal insulation and sound absorption properties and are widely used in the insulation of various high-energy pipelines. On the other hand, traditional insulation layers have a single function, only providing thermal insulation. During long-term use, high-energy pipelines may leak or rupture. In such cases, conventional insulation layers result in leaks being buried deep, making effective pipeline detection and rapid fault location difficult. Summary of the Invention

[0003] This invention provides a high-energy pipeline leakage monitoring device to solve the shortcomings of existing technologies in detecting pipeline damage, which cannot quickly locate the fault point.

[0004] According to the present invention, a high-energy pipeline leakage monitoring device is provided, comprising an industrial control computer, a laser, an optical signal detector and multiple detection units. The detection units are connected to the outer wall of the pipeline, and the multiple detection units are distributed circumferentially along the outer wall of the pipeline. Each detection unit includes a temperature-measuring optical fiber and a guided wave sensor. The temperature-measuring optical fiber extends along the axial direction of the pipeline, and the temperature-measuring optical fiber and the guided wave sensor are disposed between the outer wall of the pipeline and the insulation layer.

[0005] The lasers are connected to the ends of the temperature-sensing optical fibers respectively, and are used to emit detection light signals to the temperature-sensing optical fibers;

[0006] The optical signal detector is connected to the end of the temperature-measuring optical fiber and is used to receive the optical signal emitted by the temperature-measuring optical fiber.

[0007] The industrial control computer is communicatively connected to the optical signal detector and the guided wave sensor, respectively, and is used to analyze the optical signal received by the optical signal detector and the guided wave signal received by the guided wave sensor.

[0008] According to the high-energy pipeline leakage monitoring device provided by the present invention, each detection unit contains two temperature-measuring optical fibers, which are arranged along the pipeline axis, and the guided wave sensor is arranged between the two temperature-measuring optical fibers.

[0009] According to the present invention, a high-energy pipeline leakage monitoring device is provided, wherein the guided wave sensor includes a guided wave excitation signal generator and a guided wave receiver, and the guided wave excitation signal generator and the guided wave receiver are respectively communicatively connected to the industrial control computer.

[0010] According to the present invention, a high-energy pipeline leakage monitoring device is provided, wherein the temperature measuring optical fiber and the guided wave sensor are attached to the outer wall of the pipeline.

[0011] According to the present invention, a high-energy pipeline leakage monitoring device is provided, wherein the detection unit further includes a covering strip, the covering strip extends along the pipeline axial direction, the temperature measuring optical fiber and the guided wave sensor are connected to the side wall of the covering strip, and the covering strip is distributed along the axial direction of the detection unit on the outer wall of the pipeline to form a heat insulation layer covering the outer wall of the pipeline.

[0012] According to the present invention, a high-energy pipeline leakage monitoring device further includes a connecting key, which is located between two adjacent detection units, and a keyway for the connecting key to be embedded is provided on one side of the two adjacent covering strips facing each other.

[0013] According to the present invention, a high-energy pipeline leakage monitoring device is provided, wherein the connecting key is provided with dovetail protrusions on both sides and the keyway is provided with a dovetail groove.

[0014] According to the present invention, a high-energy pipeline leakage monitoring device further includes a locking ring, wherein the pipeline and the detection unit are disposed within the locking ring, and the locking ring presses the detection unit against the outer wall of the pipeline.

[0015] According to the present invention, a high-energy pipeline leakage monitoring device is provided, wherein the connecting key extends out of one end of the covering strip and is fixedly connected to the outer wall of the pipeline.

[0016] A high-energy pipeline leakage monitoring device is provided according to the present invention.

[0017] This invention provides a high-energy pipeline leak monitoring device. By simultaneously installing a temperature-sensing optical fiber and a guided wave sensor between the insulation layer and the outer wall of the pipeline, the guided wave sensor detects axial physical defects in the pipeline. The temperature-sensing optical fiber measures the temperature along the pipeline's axial direction. Multiple detection units are positioned axially on the outer wall of the pipeline, enabling comprehensive monitoring of the entire pipeline. Pipeline defects and leak points can be located and their corresponding temperatures measured without removing the insulation layer. An industrial control computer communicates with the temperature-sensing optical fiber and the guided wave sensor, analyzing the optical signals received by the optical signal detector and the guided wave signals received by the guided wave sensor, providing guidance for multi-dimensional analysis of pipeline damage and repair solutions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a high-energy pipeline leakage monitoring device provided by the present invention.

[0020] Figure 2 This is a schematic diagram showing the connection relationship between the temperature-measuring optical fiber and the guided wave sensor of this invention.

[0021] Figure 3 This is a schematic diagram of the connection relationship where the two sides of the connecting key of the present invention are set as dovetail protrusions.

[0022] Figure 4 This is a schematic diagram showing the connection relationship between the temperature measuring optical fiber and the guided wave sensor of the present invention and the positioning groove.

[0023] Figure label:

[0024] 1. Industrial control computer; 11. Guided wave damage assessment module; 12. Fiber optic temperature measurement analysis module software; 13. Multi-dimensional pipeline damage assessment module; 2. Laser; 3. Optical signal detector; 4. Detection unit; 41. Temperature measuring fiber; 42. Guided wave sensor; 421. Guided wave excitation signal generator; 422. Guided wave receiver; 43. Covering strip; 431. Keyway; 432. Positioning groove; 5. Connecting key; 51. Dovetail protrusion; 6. Locking ring; 7. Pipeline. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] The terms "first" and "second" in the specification and claims of this invention may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0028] The following is combined with Figures 1-4 The present invention describes a high-energy pipeline leakage monitoring device.

[0029] This invention provides a high-energy pipeline leak monitoring device, comprising an industrial control computer 1, a laser 2, an optical signal detector 3, and multiple detection units 4. The detection units 4 are connected to the outer wall of the pipeline 7, and the multiple detection units 4 are distributed circumferentially along the outer wall of the pipeline 7. Each detection unit 4 includes a temperature-sensing optical fiber 41 and a guided wave sensor 42. The temperature-sensing optical fiber 41 extends axially along the pipeline 7, and the temperature-sensing optical fiber 41 and the guided wave sensor 42 are disposed between the outer wall of the pipeline 7 and the insulation layer. The laser 2 is connected to the ends of the temperature-sensing optical fiber 41 to emit detection optical signals. The optical signal detector 3 is connected to the ends of the temperature-sensing optical fiber 41 to receive the optical signals emitted by the temperature-sensing optical fiber 41. The industrial control computer 1 is communicatively connected to the optical signal detector 3 and the guided wave sensor 42 to analyze the optical signals received by the optical signal detector 3 and the guided wave signals received by the guided wave sensor 42.

[0030] Specifically, such as Figure 1 As shown, the detection unit 4 is installed on the outer wall of the pipe 7. The temperature-sensing optical fiber 41 and the guided wave sensor 42 are attached to the pipe 7 and located between the outer wall of the pipe 7 and the insulation layer. The guided wave sensor 42 senses and detects axial physical defects in the pipe 7, and the temperature-sensing optical fiber 41 senses and measures the temperature along the axial direction of the pipe 7. Multiple detection units 4 are circumferentially distributed on the outer wall of the pipe 7, thereby realizing the monitoring and location of defects and temperature throughout the entire pipe 7. A pulse signal light source is constructed by the laser 2 for detection, and the optical signal detector 3 receives the detected optical signal. The industrial control computer 1 analyzes the optical signal received by the optical signal detector 3 and the guided wave signal received by the guided wave sensor 42. Of course, the industrial control computer 1 can also communicate with the laser 2 to control the laser 2 to emit light.

[0031] Specifically, such as Figure 2As shown, the industrial control computer 1 can be equipped with a guided wave damage assessment module 11, which is communicatively connected to the guided wave receiver 422 for analyzing guided wave signals. The industrial control computer 1 can also be equipped with a fiber optic temperature measurement and analysis module, which is communicatively connected to the optical signal detector 3 for analyzing the optical signals detected by the optical signal detector 3. The industrial control computer 1 can also be equipped with a multi-dimensional pipeline 7 damage assessment module 13, which is communicatively connected to both the fiber optic temperature measurement and analysis module and the guided wave damage assessment module 11 for comprehensive analysis of the output results of the guided wave damage assessment module 11 and the fiber optic temperature measurement and analysis module. This provides guidance for emergency repair plans for pipeline 7.

[0032] When using the high-energy pipeline 7 leak monitoring device, multiple detection units 4 are installed on the outer wall of the pipeline 7. A guided wave sensor 42 uses guided waves to perform real-time detection and location of damage to the pipeline 7. During wave propagation in the pipeline 7, when the wave velocity changes due to local defects or discontinuous gaps, it causes wave reflection and refraction, thus generating reflected echoes carrying information about structural defects and gaps. The guided wave sensor 42 receives these signals and transmits them to the industrial control computer 1 via a communication connection for analysis, thereby determining the location of defects in the pipeline 7. Simultaneously, a temperature-measuring optical fiber 41, axially positioned between the insulation layer and the pipeline 7 wall, uses a laser 2 to construct a pulse signal light source. A photodetector 3 receives the detected light signal. Based on the spontaneous scattering effect of the optical fiber, the photodetector 3 receives the detected light signal and transmits it to the industrial control computer 1 via a communication connection for analysis.

[0033] This invention provides a high-energy pipeline leak monitoring device. By simultaneously installing a temperature-sensing optical fiber 41 and a guided wave sensor 42 between the insulation layer and the outer wall of the pipeline 7, the guided wave sensor 42 senses and detects axial physical defects in the pipeline 7. The temperature-sensing optical fiber 41 senses and measures the temperature along the axial direction of the pipeline 7. Multiple detection units 4 are positioned axially on the outer wall of the pipeline 7, enabling comprehensive monitoring of the entire pipeline 7. Defects and leaks in the pipeline 7 can be located and their corresponding temperatures measured without removing the insulation layer. An industrial control computer 1 communicates with the temperature-sensing optical fiber 41 and the guided wave sensor 42, analyzing the optical signals received by the optical signal detector 3 and the guided wave signals received by the guided wave sensor 42, providing guidance for multi-dimensional analysis of pipeline 7 damage and repair plans.

[0034] Furthermore, each detection unit 4 contains two temperature-sensing optical fibers 41, which are arranged axially along the pipe 7, and a guided wave sensor 42 is positioned between the two temperature-sensing optical fibers 41. Specifically, as shown... Figure 1As shown, two temperature-sensing optical fibers 41 are set up, and a guided wave sensor 42 is placed between the two temperature-sensing optical fibers 41, which further increases the density of temperature acquisition on the outer wall of the pipe 7, thereby improving the detection accuracy.

[0035] Furthermore, the guided wave sensor 42 includes a guided wave excitation signal generator 421 and a guided wave receiver 422, which are respectively connected to the industrial control computer 1 for communication.

[0036] Specifically, such as Figure 2 As shown, the wave excitation signal generator and waveguide receiver 422 in the guided wave sensor 42 are connected to the industrial control computer 1. The industrial control computer 1 controls the guided wave excitation signal generator 421 to send an excitation signal to the pipe 7 via a communication connection, thereby forming a guided wave within the pipe wall of the pipe 7. The guided wave receiver 422 senses and receives the reflected echo signals carrying information about structural defects and gaps, and transmits this information to the industrial control computer 1 via the communication connection for analysis. This allows for the location of defects and leaks in the pipe 7.

[0037] Furthermore, the temperature-sensing optical fiber 41 and the waveguide sensor 42 are attached to the outer wall of the pipe 7. Attaching the temperature-sensing optical fiber 41 and the waveguide sensor 42 to the pipe wall improves their sensing accuracy.

[0038] Furthermore, the detection unit 4 also includes a covering strip 43, which extends along the axial direction of the pipe 7. The temperature measuring fiber 41 and the waveguide sensor 42 are connected to the side wall of the covering strip 43. The covering strip 43 is distributed along the axial direction of the detection unit 4 on the outer wall of the pipe 7 to form a heat insulation layer covering the outer wall of the pipe 7.

[0039] Specifically, such as Figure 1As shown, the covering strip 43 is designed with an arc shape and is made of flexible thermal insulation material. When the edges of two adjacent covering strips 43 are pressed against each other, a certain deformation occurs at the edges to ensure the tightness of the joint at the edge of the covering strip, thereby improving the thermal insulation effect. When installing the detection unit 4 on the pipe 7, the covering strip 43 is extended along the axial direction of the pipe 7, and the temperature measuring fiber 41 and the waveguide sensor 42 are connected to the side wall of the covering strip 43. Then, the end of the covering strip 43 with the temperature measuring fiber 41 and the waveguide sensor 42 is oriented towards the pipe 7, so that the temperature measuring fiber 41 and the waveguide sensor 42 are in contact with the outer wall of the pipe 7, thereby completing the connection of one detection unit 4 on the pipe 7. Multiple detection units 4 are connected to the outer wall of the pipe 7 in the same way, with the covering strips 43 axially distributed on the outer wall of the pipe 7, and the side walls of two adjacent covering strips 43 are in contact with each other to cover the pipe 7, thus constructing a thermal insulation layer. The temperature-measuring fiber optic cable 41 and the guided wave sensor 42 are thus encased between the insulation layer and the outer wall of the pipe 7, achieving both insulation of the pipe 7 and providing a sealed space for damage detection, reducing interference from the background environment. The insulation layer is composed of multiple covering strips 43, allowing for independent disassembly and installation of individual strips 43, facilitating subsequent maintenance. For pipes 7 of different diameters, different numbers of detection units 4 can be combined to complete the insulation layer construction. The covering layer adopts a modular design, which flexibly adapts to different pipe 7 covering requirements and handles emergency repairs in localized areas of the pipe 7, greatly improving the efficiency of the covering layer while meeting insulation requirements. By combining the insulation layer structure of the pipe 7 with the leakage monitoring device of the pipe 7, the operating status of the pipe 7 can be monitored in real time while ensuring the insulation function of the pipe 7, providing conditions for rapid mitigation of operational accidents involving the pipe 7 and related systems.

[0040] Furthermore, it also includes a connecting key 5, which is located between two adjacent detection units 4, and a keyway 431 for the connecting key 5 to be embedded is provided on one side of the two adjacent covering strips 43 facing each other.

[0041] Specifically, such as Figure 2 As shown, in an optional embodiment, adjacent wrapping strips 43 are positioned by a connecting key 5. The connecting key 5 is a flat key structure, and the wrapping strips 43 have keyways 431 on opposite sides. When the detection unit 4 is connected to the pipe 7, the keyways 431 on the adjacent wrapping strips 43 are positioned opposite each other, and the connecting key 5 is inserted into the keyway 431, thereby achieving positioning between the adjacent wrapping strips 43.

[0042] In another alternative embodiment, such as Figure 3As shown, dovetail protrusions 51 are respectively provided on both sides of the connecting key 5, and the keyway 431 is set as a dovetail groove. When the detection unit 4 is connected to the pipe 7, the keyways 431 on the two adjacent covering strips 43 are set opposite to each other. By inserting the connecting key 5 with the dovetail protrusions 51 into the dovetail groove, the connection positioning between the two adjacent covering strips 43 is realized, thereby improving the stability of the connection between the two adjacent covering strips 43.

[0043] Furthermore, such as Figure 1 As shown, it also includes a locking ring 6. The pipe 7 and the detection unit 4 are disposed inside the locking ring 6, and the locking ring 6 presses the detection unit 4 tightly against the outer wall of the pipe 7. By fitting the locking ring 6 onto the outer wall of the insulation layer, the detection unit 4 is pressed tightly against the outer wall of the pipe 7, further improving the stability of the connection between the detection unit 4 and the pipe 7. The locking ring 6 can be a clamp or a ring-shaped locking buckle.

[0044] In an optional embodiment, the connecting key 5 extends out of the covering strip 43 and is fixedly connected to the outer wall of the pipe 7. Specifically, when fixing the detection unit 4 on the pipe 7, the keyways 431 are positioned opposite each other, the connecting key 5 is inserted into the keyway 431, and the end of the connecting key 5 extends out of the keyway 431. The end of the connecting key 5 extending out of the covering strip 43 can be fixedly connected to the outer wall of the pipe 7 by adhesive bonding, thereby improving the stability of the connection of the covering strip 43.

[0045] In an alternative embodiment, such as Figure 1 As shown, the covering strip 43 is directly pressed onto the temperature measuring optical fiber 41 and the waveguide sensor 42.

[0046] In another alternative embodiment, such as Figure 4 As shown, the sidewall of the covering strip 43 is provided with positioning grooves 432 for embedding the temperature measuring fiber 41 and the waveguide sensor 42 respectively. When the temperature measuring fiber 41 and the waveguide sensor 42 are connected to the sidewall of the covering strip 43, the temperature measuring fiber 41 and the waveguide sensor 42 are embedded in the positioning grooves 432, thereby improving the stability of the setting of the temperature measuring fiber 41 and the waveguide sensor 42.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-energy pipeline leakage monitoring device, characterized in that, It includes an industrial control computer, a laser, an optical signal detector, and multiple detection units. The detection units are connected to the outer wall of the pipe and are distributed circumferentially along the outer wall of the pipe. Each detection unit includes a temperature-measuring optical fiber and a guided wave sensor. The temperature-measuring optical fiber extends along the axial direction of the pipe and the temperature-measuring optical fiber and the guided wave sensor are disposed between the outer wall of the pipe and the insulation layer. The lasers are connected to the ends of the temperature-sensing optical fibers respectively, and are used to emit detection light signals to the temperature-sensing optical fibers; The optical signal detector is connected to the end of the temperature-measuring optical fiber and is used to receive the optical signal emitted by the temperature-measuring optical fiber. The industrial control computer is communicatively connected to the optical signal detector and the guided wave sensor, respectively, and is used to analyze the optical signal received by the optical signal detector and the guided wave signal received by the guided wave sensor. The detection unit also includes a covering strip that extends along the pipe axis. The temperature measuring fiber and the waveguide sensor are connected to the side wall of the covering strip. The covering strip is distributed along the pipe axis with the detection unit to form a heat insulation layer covering the pipe outer wall. Two adjacent covering strips are detachably connected so that the edges of the two adjacent covering strips are pressed against each other.

2. The high-energy pipeline leakage monitoring device according to claim 1, characterized in that, Each detection unit contains two temperature-sensing optical fibers, which are arranged along the axial direction of the pipe, and the waveguide sensor is positioned between the two temperature-sensing optical fibers.

3. The high-energy pipeline leakage monitoring device according to claim 1, characterized in that, The guided wave sensor includes a guided wave excitation signal generator and a guided wave receiver, which are respectively connected to the industrial control computer for communication.

4. The high-energy pipeline leakage monitoring device according to claim 1, characterized in that, The temperature-measuring optical fiber and guided wave sensor are attached to the outer wall of the pipe.

5. The high-energy pipeline leakage monitoring device according to claim 1, characterized in that, It also includes a connecting key, which is located between two adjacent detection units, and a keyway for the connecting key to be embedded is provided on the opposite side of the two adjacent covering strips.

6. The high-energy pipeline leakage monitoring device according to claim 5, characterized in that, The connecting key has dovetail protrusions on both sides and the keyway has a dovetail groove.

7. The high-energy pipeline leakage monitoring device according to claim 6, characterized in that, It also includes a locking ring, in which the pipe and the detection unit are disposed, and the locking ring presses the detection unit against the outer wall of the pipe.

8. The high-energy pipeline leakage monitoring device according to claim 5, characterized in that, The connecting key extends from one end of the covering strip and is fixedly connected to the outer wall of the pipe.

9. The high-energy pipeline leakage monitoring device according to claim 5, characterized in that, The sidewall of the covering strip is provided with positioning grooves for the temperature measuring optical fiber and the waveguide sensor to be embedded respectively.

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