Kaidexing

Tel：400-110-9708

Fax：86(010)-82719489-806

Mail：kdx@cnkdx.com , cnkdx@126.com

Web：http://www.cnkdx.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing

Solutions | 2020-08-19 16:30

Feature Description:

Distributed optical fiber pipeline leakage monitoring system real-time leakage monitoring of natural gas, petroleum and petrochemical water supply, heating and other real-time leakage monitoring has high accuracy and stable performance,,,.

Parameter index: the following parameters are standard parameters, which can be customized according to the specific needs of customers

Principle of distributed optical fiber temperature measurement

The distributed optical fiber temperature measurement system (DTS) uses the principle of Raman scattering of optical fiber. When the temperature changes in a certain place of optical fiber, the scattered light is modulated and changed. Through high-speed signal acquisition and data processing technology, it can accurately locate the position of disturbance and give real-time temperature alarm information.Distributed optical fiber temperature monitoring system uses laser pulse to enter from one end of the fiber. In the process of forward propagation, the fiber molecules interact and produce various types of scattering. Due to the thermal vibration of the fiber molecules, a light with a longer wavelength than the light source and a light with a shorter wavelength than the light source are generated. The light intensity with shorter wavelength is more sensitive to the influence of temperatureThe temperature information of any point can be obtained from the ratio of the intensity of two short wave and short wave light signals at any point.The optical time domain reflection (OTDR) principle is used to locate these hot spots through the transmission speed of light wave in the fiber and the time of back light echo.The distributed measurement of temperature field along the optical fiber can be realized by using the above technical principles.

Principle of distributed optical fiber pipeline leakage monitoring

Oil and gas pipeline leakage will cause temperature changes around the leakage point, and the leakage point can be accurately located by distributed optical fiber temperature sensing system.In the case of natural gas pipeline medium leakage and pressure, the low temperature of the leakage point caused by gaseous substances is determined by the physical properties of the material, process conditions and the surrounding environment.The temperature anomalies of these points can be obtained by distributed temperature measurement with good accuracy of temperature, distance and reaction time.In case of pipeline leakage accident, the leaked natural gas will emit jet gas around the pipeline due to the existence of pressure.On the basis of the existing pressure and flow detection technology, if the whole natural gas pipeline can be connected to the distributed optical fiber temperature sensing host by using the communication optical cable laid along the pipeline, the leakage point can be detected in real time, and the leakage point positioning and alarm display can be carried out.

System composition:

Characteristics of system equipment

The safety monitoring system of natural gas pipeline leakage adopts the current advanced pipeline temperature system monitoring technology.Only one optical fiber of the communication optical cable in the natural gas pipeline can realize the leakage location alarm of tens of kilometers of natural gas pipeline.Through the distributed optical fiber temperature measurement technology based on communication optical cable, on-line temperature distribution monitoring of natural gas pipeline can accurately find the leakage point of pipeline through the detection of abnormal point of pipeline temperature, and timely alarm and positioning.If the natural gas pipeline leaks, the volume expansion of high-pressure gas will cause the temperature drop near the leakage point. The distributed optical fiber temperature measurement system can also detect and locate the leakage point of the natural gas pipeline through the detection of abnormal temperature points.The temperature information can be uploaded to the central network system to monitor the temperature of the pipeline.In the early stage of pipeline leakage and accident in the whole natural gas pipeline, the specific location, temperature change, temperature decline trend and other information data of the early warning point can be found and reported in the first time, which provides reliable and solid information acquisition means for the natural gas pipeline management department and other relevant departments to locate and analyze the possible pipeline leakage accidents in timeThe safe operation of the system provides efficient security guarantee.The system has the advantages of explosion-proof, strong electromagnetic interference resistance, good electrical insulation, lightning protection, high precision, light weight, small size and so on. It is suitable for application in high-risk environment such as flammable and explosive.After the equipment is connected to the network, the location map of the optical cable is displayed by loading Baidu map, and the central point is set, and the local location is selected. The optical cable trend map can be marked on the map according to the pipeline direction. When an alarm occurs, a pop-up window will appear on the interface to display the alarm location, alarm time, etc.

We conduct quality inspections on raw materials to ensure the reliability and stability of the mechanical product manufacturing process.

High-strength, high-precision "wire cutting machine" creates the perfect workpiece shape!

The best choice for automated production, "Robot Machining Center" helps you realize intelligent manufacturing!

Beijing KDX Electronic Information Technology Co., Ltd., is located in Beijing's Haidian High-tech Development Zone, Company comprehensive modern new energy technology and optical fiber communication technology, is committed to in optical transmission system and image coding device and an operation and maintenance system technology and equipment research and production...

Tel：400-110-9708

Fax：86(010)-82719489-806

Website：http://www.cnkdx.com

Mail：kdx@cnkdx.com , cnkdx@126.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing