سنسورهای دمای فیبر نوری INNO ,سیستم های نظارت بر دما.
Functional Characteristics of Distributed Fiber Optic Heat Network Leakage Monitoring System
1. اندازه گیری مستمر توزیع شده:
Distributed fiber optic sensors are truly distributed measurements that can continuously obtain measurement information along the detection fiber optic cable for tens of kilometers, تا حد زیادی نرخ هشدار نادرست و هشدار اشتباه را کاهش می دهد, و دستیابی به نظارت در زمان واقعی.
2. ضد تداخل الکترومغناطیسی, دستیابی به عدم تشخیص برق در محل:
The optical fiber itself is composed of quartz material and is completely electrically insulated; در عین حال, سیگنال سنسورهای فیبر نوری توسط سیگنال های نوری منتقل می شود, که ذاتاً ایمن هستند و تحت تأثیر هیچ گونه تداخل محیط الکترومغناطیسی خارجی قرار نمی گیرند. It can enter without being charged, بنابراین خطر احتمالی جرقه های الکتریکی در مناطق حاوی گازهای مخلوط قابل احتراق از بین می رود, and achieving on-site non electric detection, که ذاتا امن است.
3. حفاظت ذاتی در برابر صاعقه:
رعد و برق اغلب به تعداد زیادی از سنسورهای الکتریکی آسیب می رساند. سنسورهای فیبر نوری, به دلیل عایق الکتریکی کامل آنها, می تواند تاثیر ولتاژ بالا و جریان بالا را تحمل کند.
4. فاصله اندازه گیری طولانی, مناسب برای نظارت از راه دور:
دو مزیت برجسته فیبر نوری حجم بالای انتقال داده و تلفات کم است. این می تواند به نظارت از راه دور برای ده ها کیلومتر بدون نیاز به رله دست یابد.
5. حساسیت و دقت اندازه گیری بالا:
در تئوری, the sensitivity and measurement accuracy of most fiber optic sensors are superior to general sensors, و این توسط محصولات بالغ در عمل ثابت شده است.
6. طول عمر طولانی, کم هزینه, و سیستم ساده:
The normal working life of the fiber optic leakage monitoring device exceeds 20 سال. After the completion of a construction project, maintenance free automated operation can be basically achieved, which can greatly reduce the annual operating and maintenance costs of the entire heating project, and achieve the state based maintenance and repair of the heating pipeline.
Distributed optical fibers can be applied in different scenarios, such as pipeline and tunnel leakage monitoring.
The necessity of distributed fiber optic heating network monitoring
In order to ensure the safe and reliable operation of the heating network and to keep track of its operation at all times, it is necessary to set up a monitoring system in the heating network. For directly buried heating networks, some countries have promoted the use of heating network leakage monitoring systems. The leakage of heating pipelines can easily lead to the loss of a large amount of water and heat energy, reducing the transportation efficiency of the heating system. در عین حال, there are safety hazards in thermal pipelines: due to aging of pipelines, gas and water leaks occur, or due to accumulated water or a large amount of sewage gathering around the thermal pipeline after rain, continuous gasification forms a large amount of steam accumulation, which is difficult to evacuate. There have been varying degrees of thermal pipeline explosions both domestically and internationally.
During the use of thermal pipelines, they will be subjected to high temperatures, پوشیدن, physical and chemical effects, as well as disturbances from surrounding underground engineering construction and ground traffic dynamic loads. در نتیجه, thermal pipelines will gradually develop defects such as cracks, تغییر شکل, and joint damage, leading to accidents such as fractures and leaks. به علاوه, the low welding quality between pipe sections, the pressure inside the pipeline exceeding its bearing range, and the corrosion damage of the steel pipe caused by water ingress into the insulation layer also seriously affect the safe operation of the thermal pipeline. Due to the high temperature of the heating medium, emergency rescue is often difficult, and the harm of hot water to other underground public facilities is also significant, making the losses difficult to estimate. Due to the lack of stable and reliable thermal pipeline state detection technology, the existing management mode lacks foresight, and many accidents are only discovered after pipeline damage. بنابراین, it is extremely important for the safe operation of thermal pipelines to take preventive measures and timely grasp the status information of the pipeline.
اندازه گیری دمای فیبر نوری توزیع شده technology can continuously and accurately sense the spatial temperature field distribution along the sensing fiber optic, and the sensing fiber used has the advantages of small volume, وزن سبک, ساختار ساده, استفاده راحت, high pressure and high temperature resistance, و مقاومت در برابر تداخل الکترومغناطیسی. It provides a new technical means for online temperature and leakage detection of thermal pipelines.
این سیستم اندازه گیری دمای فیبر نوری توزیع شده not only has the advantages of ordinary سنسورهای فیبر نوری, but also has the ability to distribute temperature sensing at various points along the fiber optic line. The fiber optic is not only a conductor for transmitting information, but also a sensor for distributed measurement. It can continuously measure the temperature along the fiber optic cable, with a maximum measurement distance of over 20 کیلومتر. Each continuous temperature sensing segment and spatial positioning accuracy reach a high resolution of 0.4 متر, making it particularly suitable for applications that require large-scale and continuous temperature measurement.
سنسور دمای فیبر نوری, سیستم مانیتورینگ هوشمند, تولید کننده فیبر نوری توزیع شده در چین
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