Real-time monitoring system for heating pipes

Abstract

The utility model discloses a kind of real-time monitoring system for heating pipeline, the real-time monitoring system includes temperature measurement optical cable, optical cable fixing, reflecting device, signal output device, data acquisition device, data analysis device, data display device, temperature measurement optical cable is laid along the below of the heating pipeline to be measured;The front end of each temperature measurement optical cable is connected with signal output device and rear end is connected with reflecting device;The signal output device transmits laser signal to temperature measurement optical cable;The data acquisition device is connected between temperature measurement optical cable and signal output device;The data acquisition device transmits laser return signal to the data analysis device;The data analysis device transmits analysis data signal to the data display device.The utility model can carry out real-time monitoring to heating pipeline, and can quickly obtain pipeline leakage position, using the sensitivity of optical cable to temperature, the laying mode of the present application to optical cable can improve the accuracy of monitoring.

Description

Technical Field

[0001] This utility model relates to a real-time monitoring system for heating pipelines. Background Technology

[0002] Heating pipelines are vital infrastructure; damage to them can severely impact heating and heat production, resulting in direct economic losses and adverse social consequences. Timely detection of pipeline leaks, especially minor ones, provides crucial predictive information for timely repair and maintenance, preventing major leaks. Therefore, research on pipeline leak detection is of paramount practical importance. When a heating pipeline leaks, a temperature difference exists between the leaking hot water and the surrounding environment. Distributed fiber optic temperature sensors at key points can detect these temperature changes, thus determining the occurrence of a leak. This research offers a novel method for leak detection in heating and other pipeline systems.

[0003] DTS (Distributed Fiber Optic Temperature Measurement System) is an intelligent device that uses optical fiber as a sensing medium and achieves temperature monitoring through the principles of backscattering Raman scattering and optical time-domain reflectometry.

[0004] Existing distributed fiber optic temperature measurement systems suffer from poor monitoring accuracy. Utility Model Content

[0005] The technical problem this utility model aims to solve is to overcome the shortcomings of poor monitoring accuracy in existing distributed fiber optic temperature measurement systems. It provides a real-time monitoring system for heating pipelines that can monitor heating pipelines in real time and quickly locate pipeline leaks. This application utilizes the temperature sensitivity of optical cables and improves monitoring accuracy through the method of laying the optical cables.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution: A real-time monitoring system for heating pipelines, characterized in that the real-time monitoring system includes a temperature-measuring optical cable, an optical cable fixing component, a reflector, a signal output device, a data acquisition device, a data analysis device, and a data display device. The temperature measuring optical cable is laid below the heating pipe to be measured and fixed to the outside of the heating pipe insulation layer using optical cable fasteners. The front end of each temperature-measuring optical cable is connected to the signal output device, and the rear end is connected to the reflector. The signal output device transmits laser signals to the temperature-measuring optical cable; The data acquisition device is connected between the temperature measuring optical cable and the signal output device; The data acquisition device transmits a laser return signal to the data analysis device; The data analysis device transmits analysis data signals to the data display device.

[0007] Preferably, the optical cable fixing component includes a binding strap and a binding strap accessory. The binding strap accessory includes a base and fixing protrusions on both sides of the base. Each fixing protrusion has a through hole. After the binding strap passes through the through hole, it fixes the temperature measuring optical cable to the bottom of the heating pipe to be tested. The temperature measuring optical cable is located between the binding strap and the base.

[0008] Preferably, the bottom of the insulation layer is provided with a protruding ridge, and the binding strap passes through the through hole to fix the binding strap accessory to the top of the protruding ridge.

[0009] Preferably, the cross-section of the protruding ridge in the axial direction of the insulation layer is an isosceles triangle, and the included angle formed by the two fixing protrusions of the binding strap accessory matches the vertex angle of the isosceles triangle.

[0010] Preferably, the temperature measuring optical cable is laid below the transverse heating pipe to be tested and spirally wound around the outside of the insulation layer of the longitudinal heating pipe to be tested.

[0011] Preferably, the signal output device includes a laser, a chopper, a dual-pulse generator, a signal generator, and a filter. The laser is connected to the chopper, the chopper is connected to the dual-pulse generator, and the signal generator is connected to both the chopper and the dual-pulse generator. The dual-pulse generator is connected to the first port of the circulator via a filter, the second port of the circulator is connected to the optical cable under test, and the third port of the circulator is connected to the data acquisition device via a photodetector.

[0012] Preferably, the signal generator sends a phase synchronization signal to the data acquisition device.

[0013] Preferably, the dual-pulse generator is connected to the filter via an erbium-doped fiber amplifier.

[0014] Preferably, the temperature measuring optical cable, optical cable fixing component, and reflector are all installed on one side of the heating pipeline, with the reflector installed at the end of the pipeline, and the signal output device, data acquisition device, data analysis device, and data display device are all located in the station control room.

[0015] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0016] The positive and progressive effects of this utility model are as follows: This invention enables real-time monitoring of heating pipelines and rapid location of leaks. Utilizing the temperature sensitivity of optical fibers, this application improves monitoring accuracy through specific fiber optic cable laying methods. This invention further enhances the practicality of DTS (Digital Transmission System) and provides an effective implementation plan for its widespread application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the real-time monitoring system of Embodiment 1 of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the heating pipeline to be tested in Embodiment 1 of this utility model.

[0019] Figure 3 This is a partial structural schematic diagram of the heating pipeline to be tested in Embodiment 1 of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the real-time monitoring system of Embodiment 1 of this utility model. Detailed Implementation

[0021] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein. Example

[0022] In this embodiment, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] See Figures 1 to 4 This embodiment provides a real-time monitoring system for heating pipelines.

[0024] The real-time monitoring system includes a temperature-measuring optical cable 11, an optical cable fixing component 12, a reflector 14, a signal output device 15, a data acquisition device 16, a data analysis device 17, and a data display device 18.

[0025] The temperature measuring optical cable 11, optical cable fixing component 12, and reflector 14 are all located at the monitoring site, that is, installed on one side of the heating pipeline. The reflector 14 can be a Faraday rotator installed at the end of the pipeline (such as the inlet end). The signal output device, data acquisition device, data analysis device, and data display device are all located at the station control point to facilitate data acquisition.

[0026] The temperature measuring optical cable is laid below the heating pipe 19 to be measured and fixed to the outside of the heating pipe insulation layer 22 using optical cable fasteners. The front end (the end closer to the station control point) of each temperature measuring optical cable is connected to the signal output device, and the rear end (the end closer to the inlet end) is connected to the reflector 14. The signal output device transmits laser signals to the temperature-measuring optical cable; The data acquisition device is connected between the temperature measuring optical cable and the signal output device; The data acquisition device transmits a laser return signal to the data analysis device; The data analysis device transmits analysis data signals to the data display device.

[0027] The optical cable fixing component 12 includes a binding strap 121 and a binding strap accessory 122. The binding strap accessory 122 includes a base and fixing protrusions 123 on both sides of the base. Each fixing protrusion has a through hole. After the binding strap passes through the through hole, it fixes the temperature measuring optical cable 11 to the bottom of the heating pipe to be tested. The temperature measuring optical cable is located between the binding strap and the base.

[0028] Cable ties can effectively adjust the position of the temperature-sensing optical cable, reduce the pressure on the cable ties, and extend the service life of the temperature-sensing optical cable.

[0029] The bottom of the insulation layer 22 is provided with a protruding ridge 221, and the binding strap passes through the through hole to fix the binding strap accessory to the top of the protruding ridge.

[0030] The protruding ridges can better guide the leaking liquid through the temperature measuring optical cable, and can detect liquids with small leaks more accurately.

[0031] The cross-section of the protruding ridge along the axial direction of the insulation layer is an isosceles triangle, and the included angle formed by the two fixing protrusions of the binding strap accessory matches the vertex angle of the isosceles triangle.

[0032] Increase the probability that leaked liquid will flow through the temperature-sensing optical cable.

[0033] The temperature measuring optical cable is laid below the horizontal heating pipe to be tested and spirally wound around the outside of the insulation layer of the vertical heating pipe to be tested.

[0034] The signal output device 15 includes a laser 151, a chopper 152, a dual pulse generator 153, a signal generator 154, and a filter 155.

[0035] The laser is connected to the chopper, the chopper is connected to the dual-pulse generator, and the signal generator is connected to both the chopper and the dual-pulse generator. The dual-pulse generator is connected to the first port of the circulator 20 via a filter, the second port of the circulator is connected to the optical cable under test, and the third port of the circulator is connected to the data acquisition device via a photodetector 157.

[0036] The signal generator sends a phase synchronization signal to the data acquisition device.

[0037] The dual-pulse generator is connected to the filter via an erbium-doped fiber amplifier 156.

[0038] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A real-time monitoring system for heating pipelines, characterized in that, The real-time monitoring system includes a temperature-measuring optical cable, optical cable fasteners, a reflector, a signal output device, a data acquisition device, a data analysis device, and a data display device. The temperature measuring optical cable is laid below the heating pipe to be measured and fixed to the outside of the heating pipe insulation layer using optical cable fasteners. The front end of each temperature-measuring optical cable is connected to the signal output device, and the rear end is connected to the reflector. The signal output device transmits laser signals to the temperature-measuring optical cable; The data acquisition device is connected between the temperature measuring optical cable and the signal output device; The data acquisition device transmits a laser return signal to the data analysis device; The data analysis device transmits analysis data signals to the data display device.

2. The real-time monitoring system for heating pipelines as described in claim 1, characterized in that, The optical cable fixing component includes a binding strap and binding strap accessories. The binding strap accessories include a base and fixing protrusions on both sides of the base. Each fixing protrusion has a through hole. After the binding strap passes through the through hole, it fixes the temperature measuring optical cable to the bottom of the heating pipe to be tested. The temperature measuring optical cable is located between the binding strap and the base.

3. The real-time monitoring system for heating pipelines as described in claim 2, characterized in that, The bottom of the insulation layer is provided with a protruding ridge, and the binding strap passes through the through hole to fix the binding strap accessory to the top of the protruding ridge.

4. The real-time monitoring system for heating pipelines as described in claim 3, characterized in that, The cross-section of the protruding ridge along the axial direction of the insulation layer is an isosceles triangle, and the included angle formed by the two fixing protrusions of the binding strap accessory matches the vertex angle of the isosceles triangle.

5. The real-time monitoring system for heating pipelines as described in claim 1, characterized in that, The temperature measuring optical cable is laid below the horizontal heating pipe to be tested and spirally wound around the outside of the insulation layer of the vertical heating pipe to be tested.

6. The real-time monitoring system for heating pipelines as described in claim 1, characterized in that, The signal output device includes a laser, a chopper, a dual-pulse generator, a signal generator, and a filter. The laser is connected to the chopper, the chopper is connected to the dual-pulse generator, and the signal generator is connected to both the chopper and the dual-pulse generator. The dual-pulse generator is connected to the first port of the circulator via a filter, the second port of the circulator is connected to the optical cable under test, and the third port of the circulator is connected to the data acquisition device via a photodetector.

7. The real-time monitoring system for heating pipelines as described in claim 6, characterized in that, The signal generator sends a phase synchronization signal to the data acquisition device.

8. The real-time monitoring system for heating pipelines as described in claim 6, characterized in that, The dual-pulse generator is connected to the filter via an erbium-doped fiber amplifier.

9. The real-time monitoring system for heating pipelines as described in claim 1, characterized in that, The temperature measuring optical cable, optical cable fixing component, and reflector are all installed on one side of the heating pipeline, with the reflector installed at the end of the pipeline. The signal output device, data acquisition device, data analysis device, and data display device are all located in the station control room.

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