Pipeline with optical fiber temperature monitoring function
By using polyethylene pipe bodies and fiber optic temperature monitoring systems on water supply pipelines, the problems of steel pipe corrosion and delays in manual inspections have been solved, enabling real-time temperature monitoring of the pipelines and precise location of leaks, thus improving emergency repair efficiency.
Patent Information
- Application Number
- CN202520429381.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing water supply pipelines mostly use steel pipes, which have problems such as corrosion and high cost. Furthermore, temperature information cannot be monitored in real time, and pipeline leaks require manual inspection, resulting in low emergency repair efficiency.
The pipe body is made of polyethylene, with a composite reinforcement layer and optical fiber wrapped around the outer wall. Combined with optical fiber, wavelength division multiplexer, laser and signal detector, it realizes temperature monitoring and real-time alarm of leakage point.
It improves the strength and flow stability of the pipeline, enables real-time monitoring of pipeline temperature and precise location of leaks, and improves emergency repair efficiency.
Smart Images
Figure CN223782411U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water pipe monitoring technical field especially a pipeline with optical fiber temperature monitoring. BACKGROUND
[0002] At present, most of the water supply pipeline adopts steel pipe laying, and there are problems of corrosion and high cost. In addition, there is no laying of any sensing medium along the pipeline, and the temperature information of the pipeline cannot be monitored in real time, and when the pipeline leaks, breaks or other conditions occur, the pipeline lacks leakage alarm, and the staff needs to manually check the specific pipeline leakage point, which has certain time delay, greatly reducing the efficiency of pipeline repair. SUMMARY
[0003] To solve the above problems, the utility model adopts the technical scheme that:
[0004] A pipeline with optical fiber temperature monitoring, comprising a pipeline body, the outer wall of the pipeline body is sleeved with a composite reinforcing layer, the outer wall of the composite reinforcing layer is spirally wound with an optical fiber, one end of the optical fiber is connected with a wavelength division multiplexer, the wavelength division multiplexer is connected in parallel with a laser and a signal detector, and the laser and the signal detector are connected in parallel and further connected in series with a processing module.
[0005] Further, the laser is provided with a driving circuit, and the driving circuit is connected with the processing module.
[0006] Further, the signal detector is a photomultiplier tube or an avalanche photodiode.
[0007] Further, the laser is a monochromatic laser pulse generator.
[0008] Further, the pipeline body is made of polyethylene.
[0009] Further, the outer wall of the composite reinforcing layer is sleeved with a protective layer, and the optical fiber is located between the composite reinforcing layer and the protective layer.
[0010] The utility model has the advantages of:
[0011] 1. The inner wall of the pipeline body made of polyethylene is smooth, does not form scale and wax, can ensure the stability of flow after long-time use, and the pipeline body with small diameter can meet or even exceed the flow of steel pipe with large diameter.
[0012] 2. The composite reinforcing layer is formed by winding and melting glass fiber reinforced polyethylene prepreg tape, which can effectively improve the overall strength of the pipeline.
[0013] 3. The temperature of the pipeline is monitored and real-time alarm of the position of the pipeline leakage point is realized through the optical fiber, the wavelength division multiplexer, the laser, the signal detector and the processing module, and the pipeline repair efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.
[0016] Figure 1 Structure diagram of the present application Figure 1 ; Structure diagram of the present application
[0017] Figure 2 Structure diagram of the present application Figure 2 ; Structure diagram of the present application
[0018] Figure 3 Connection diagram of the present application
[0019] Figure 4 Temperature monitoring diagram
[0020] In the drawings
[0021] 1, pipeline body; 2, composite reinforcing layer; 3, optical fiber; 4, wavelength division multiplexer; 5, laser; 6, signal detector; 7, protective layer. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.
[0023] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first", "second" and similar terms used in the present disclosure do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and the like mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0024] Reference Figure 1 And Figure 3 An embodiment of the present application is:
[0025] A pipeline with optical fiber temperature monitoring, comprising a pipeline body 1, the pipeline body 1 is made of polyethylene, the heat-resistant polyethylene has the advantages of smooth surface and small fluid resistance compared with traditional steel pipes, since the traditional steel pipes have problems such as scaling, waxing and corrosion after long-term use, the generated dirt can block the steel pipes and reduce the flow, the inner wall of the pipeline body 1 made of polyethylene is smooth and does not scale, and long-term use can ensure the stability of the flow, and the pipeline body 1 with a smaller diameter can meet or even exceed the flow of a steel pipe with a larger diameter.
[0026] The outer wall of the pipeline body 1 is sleeved with a composite reinforcing layer 2, the composite reinforcing layer 2 is formed by winding and melting glass fiber reinforced polyethylene prepreg tapes, and the composite reinforcing layer 2 has a low density and a significantly improved mechanical strength, and the tensile strength and bending resistance are close to those of metal materials, so that the overall strength of the pipeline can be effectively improved.
[0027] The outer wall of the composite reinforcing layer 2 is spirally wound with an optical fiber 3, the spiral winding structure can disperse external force impact, avoid damage to the optical fiber due to heavy pressure, bending or mechanical friction, and improve the service life of the optical fiber 3. In addition, the spiral winding structure can also reduce signal attenuation caused by external vibration and temperature change, and ensure the stability of signal transmission.
[0028] One end of the optical fiber 3 is connected with a wavelength division multiplexer 4, the wavelength division multiplexer 4 is connected in parallel with a laser 5 and a signal detector 6, and the laser 5 and the signal detector 6 are connected in parallel and further connected in series with a processing module.
[0029] The laser 5 uses a monochromatic laser pulse with high power, such as an argon ion laser with a laser wavelength of 514.5 nm or 488.0 nm. The laser 5 is provided with a driving circuit integrated in the laser, which is a known technology and will not be described in detail. The driving circuit is connected to the processing module and is used to control the output power, pulse frequency and stability of the laser to ensure that the laser meets the requirements of scattered signal detection.
[0030] The temperature monitoring of the pipeline and the real-time alarm of the pipeline leakage point position are realized by the optical fiber 3, the wavelength division multiplexer 4, the laser 5, the signal detector 6 and the processing module. Specifically, the driving circuit triggers the laser 5 to emit pulsed laser, which is coupled to the optical fiber 3 through the wavelength division multiplexer 4. When the pulsed laser is transmitted in the optical fiber 3, it collides with the molecules in the medium of the optical fiber 3, resulting in Raman scattering (mainly backscattering). The wavelength division multiplexer 4 separates the returned scattered light into two paths, namely Stokes scattered light and Anti-Stokes scattered light. The wavelength of the Stokes scattered light is longer than that of the incident light, corresponding to the molecular vibration energy absorption process. The wavelength of the Anti-Stokes scattered light is shorter than that of the incident light, corresponding to the molecular vibration energy release process. The intensity ratio of the two is directly related to the temperature. The specific calculation formula is:
[0031] T = C·ln(I AS / I S )
[0032] Where T is the temperature, I AS represents the intensity of the Anti-Stokes scattered light, I S represents the intensity of the Stokes scattered light, and C is the calibration coefficient.
[0033] In addition, the position of the scattering point is calculated by the time difference between the pulse emission and reception. The specific formula is:
[0034] L = c·t / (2n)
[0035] Where t is the time difference between the pulse emission and reception, n is the refractive index of the optical fiber, and c is the pulse laser speed
[0036] As shown in Figure 4 When the pipeline leaks, the temperature around the pipeline will change. Based on the significant change of the monitoring image, the leakage point can be quickly and accurately positioned, and the pipeline repair efficiency is improved.
[0037] The signal detector is a photomultiplier tube or an avalanche photodiode, which is used to convert the weak scattered light signal into an electrical signal.
[0038] The processing module is a known signal acquisition and control circuit or computer for amplifying, filtering and digitizing the electrical signal, eliminating noise interference, extracting effective spectral data, and analyzing spectral characteristics to generate visual results.
[0039] Specifically, as shown in Figure 2 The outer wall of the composite reinforcing layer 2 is sleeved with a protective layer 7, and the optical fiber 3 is located between the composite reinforcing layer 2 and the protective layer 7. The outer protective layer 1 is used to avoid damage to the optical fiber 3 caused by the external environment. The outer protective layer 1 is made of heat-resistant polyethylene and has certain flexibility, wear resistance, impact resistance and UV resistance.
[0040] The following points need to be explained:
[0041] (1) Unless otherwise defined, the same reference numbers in the embodiments of the present disclosure and the drawings represent the same meaning.
[0042] (2) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can be referred to the general design.
[0043] (3) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, components or regions are enlarged. It can be understood that when an element is referred to as being located "on" or "under" another element, the element can be "directly" located on or under another element, or there can be an intermediate element.
[0044] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.
Claims
1. A pipe with fiber optic temperature monitoring, comprising a pipe body (1), characterized in that: The outer wall of the pipe body (1) is fitted with a composite reinforcement layer (2), and the outer wall of the composite reinforcement layer (2) is spirally wound with an optical fiber (3). One end of the optical fiber (3) is connected to a wavelength division multiplexer (4). The wavelength division multiplexer (4) is connected in parallel with a laser (5) and a signal detector (6). The laser (5) and the signal detector (6) are connected in parallel and then connected in series with a processing module.
2. The pipeline with fiber optic temperature monitoring according to claim 1, characterized in that: The laser (5) is equipped with a driving circuit, which is connected to the processing module.
3. A pipeline with fiber optic temperature monitoring according to claim 2, characterized in that: The signal detector (6) is a photomultiplier tube or an avalanche photodiode.
4. A pipeline with fiber optic temperature monitoring according to claim 3, characterized in that: The laser (5) is a monochromatic laser pulser.
5. A pipeline with fiber optic temperature monitoring according to claim 1, characterized in that: The pipe body (1) is made of polyethylene.
6. A pipeline with fiber optic temperature monitoring according to claim 5, characterized in that: The outer wall of the composite reinforcement layer (2) is fitted with a protective layer (7), and the optical fiber (3) is located between the composite reinforcement layer (2) and the protective layer (7).