تشخیص نشت خط لوله فیبر نوری توزیع شده – سنسور دمای فیبر نوری رامان, تامین کننده, سازنده, کارخانه

پایش خط لوله یک مورد کاربردی خاص از کاربرد اندازه گیری دمای فیبر نوری توزیع شده است. FJINNO راه حل ها و محصولات فناوری اندازه گیری دمای فیبر نوری را ارائه می دهد.

حمل و نقل یک فناوری حمل و نقل است که از خطوط لوله برای انتقال سیالاتی مانند گازها و مایعات استفاده می کند. در سالهای اخیر, این فناوری به سرعت توسعه یافته و به طور گسترده در زمینه هایی مانند انرژی مورد استفاده قرار گرفته است, ساخت و ساز شهرداری, و آبیاری صرفه جویی در آب به دلیل مزایای آن در حجم حمل و نقل زیاد, اشغال زمین کوچک, چرخه ساخت کوتاه حمل و نقل خط لوله, و کم هزینه. این به روش اصلی حمل و نقل برای آب های زمینی تبدیل شده است, روغن, و گاز, و یکی از پنج روش اصلی حمل و نقل در جهان امروز است, همراه با راه آهن, highways, حمل و نقل آب, و حمل و نقل هوایی. It plays a crucial role in national economic and social development.

The method of real-time pipeline monitoring system

In practical engineering applications, pipelines are often buried underground and have long distances. Pipelines buried underground for a long time are susceptible to external forces such as corrosion from the surrounding environment, geological subsidence, ground vehicle pressure, and human damage, leading to leakage accidents. Ensuring the safety of pipeline transportation is a fundamental requirement for maintaining the normal operation of pipelines. بنابراین, real-time monitoring of the health status of transportation pipelines is necessary to ensure the safe operation of the pipelines. Traditional pipeline leak detection methods include manual inspection, balance method, negative pressure wave method, and stress wave method, و غیره. These methods are all used to detect leaks in pipelines or after they occur, which have disadvantages such as difficult positioning, short distance, هزینه بالا, and no warning function. در سالهای اخیر, new sensing technologies using optical fibers as sensing elements and transmission media have overcome the shortcomings of traditional technologies and provided a new approach for pipeline leakage detection. Based on the advantages of corrosion resistance, وزن سبک, اندازه کوچک, no need for electricity at each sensing point, مصونیت در برابر تداخل الکترومغناطیسی, حساسیت بالا, and the ability to achieve distribution, فیبر نوری توزیع شده sensing systems have become the most widely used and promising technological means in the field of pipeline detection in China.

In practical engineering, transportation pipelines generally pass through complex and diverse terrains, passing through mountains, valleys, راه آهن, highways, و غیره. را distributed fiber optic sensing system laid along the pipeline can provide continuous temperature monitoring for the entire line, achieve ultra long distance sensing monitoring, achieve all-round monitoring of transportation pipelines, and ensure the safe operation of the pipeline.

را distributed fiber optic sensing system can be divided into three types based on different fiber optic temperature measurement principles:

1. Distributed Rayleigh سنسور دمای فیبر نوری
2. Distributed Raman fiber optic temperature sensor
3. Distributed Brillouin fiber optic temperature sensor

Since the successful development of a distributed Raman fiber temperature sensor experimental device using a semiconductor laser as the light source, the distributed Raman fiber temperature sensing technology has continuously developed and is in a mature stage in engineering. A large amount of saline water is generated during the construction of an underground gas storage in a certain area, and the saline water needs to be transported to a designated location for treatment. This project uses a pipeline leakage system to detect the saline water transportation pipeline. The optical fiber is buried in sand 10 cm below the pipeline, and temperature data is collected using two collection devices in series. هر 30 دقیقه, the collection devices transmit the data to the central control computer for data analysis and generate an alarm when a leak is detected. The system can automatically send an alarm, generate a report, regularly reset and restart the measurement, and requires almost no maintenance.

Using fiber optic sensing technology for oil simulation leakage testing, detecting changes in soil temperature around the pipeline based on Raman scattering and Brillouin scattering principles, in order to determine the location of the leakage point. Using temperature sensors and fiber arrays to collect changes in soil temperature, leakage testing was conducted on high-pressure natural gas in underground pipelines. The variation law of soil temperature around the leakage hole was studied, and combined with numerical calculations, the most realistic leakage model was established to provide guidance for fiber temperature detection of gas pipeline leaks.

The application of اندازه گیری دمای فیبر نوری توزیع شده technology in various fluid transportation pipeline leak detection fields has enormous potential. This paper discusses and analyzes the application of distributed fiber optic temperature measurement system in pipeline leakage detection from the aspects of its characteristics, working principle, fiber optic laying method, and practical application case analysis. The working principle of distributed Raman fiber optic temperature measurement system combines Raman scattering and time-domain reflection technology of light in the fiber optic,

سنسور دمای فیبر نوری, سیستم مانیتورینگ هوشمند, تولید کننده فیبر نوری توزیع شده در چین