Vihisi joto vya INNO fiber optic ,mifumo ya ufuatiliaji wa joto.
There are some minor defects in the production process of natural gas transmission pipelines. Under long-term transmission loads and the high temperature and corrosive environment of the transmission medium, pipeline corrosion will accelerate and worsen, ultimately leading to pipeline damage and leakage accidents, causing huge direct economic losses, and triggering a series of secondary disasters, such as fires and environmental pollution, posing a threat to people’s life safety. Kwa hiyo, safety issues during natural gas pipeline transportation, especially online real-time leak detection of natural gas pipelines, have always been a top priority that needs to be considered in safety production.
Kwa sasa, there are many leakage monitoring methods for gas pipelines, which can be divided into mass/volume balance method, applied statistical method, negative pressure wave method, transient model method, fiber optic iliyosambazwa mbinu, nk. based on the different gas flow parameters monitored inside the pipeline. The gas pipeline leakage detection method based on fiber optic iliyosambazwa sensing has been widely studied and applied due to its advantages of good sensitivity, usahihi wa nafasi ya juu, short detection time, strong adaptability, and long system life. When a gas pipeline ruptures at a certain point and leaks, it will disrupt the normal pressure balance in the pipeline, release the elastic energy of the fluid in the pipeline system, and cause instantaneous oscillation to produce sound waves. The leakage sound wave is generated by the excited energy of gas leakage, and is a continuously emitted signal with a frequency of several hundred kHz, mainly propagating along the pipe wall. By using optical fibers installed along the pipeline, this acoustic signal can be monitored and collected. By extracting and identifying the characteristics of the acoustic signal, it can be determined whether there is a leak in the pipeline.
Faida za fiber optic iliyosambazwa natural gas transmission pipeline security vibration monitoring technology:
1. Upimaji unaoendelea kusambazwa wa halijoto na mtetemo bila vipofu vya kipimo
2. Ugunduzi wa wakati mmoja na ujanibishaji sahihi wa matukio mengi
3. Fiber optic ni sensor ambayo inachanganya maambukizi na kuhisi
4. 40 kilomita za umbali mrefu zaidi wa kipimo, habari nyingi za kipimo
5. Kasi ya majibu ya haraka, kengele ndani 1 pili
6. Usambazaji wa ishara ya macho, maboksi ya umeme kabisa, sugu kwa kuingiliwa kwa sumakuumeme
7. Usalama wa ndani, yanafaa kwa operesheni ya muda mrefu katika mazingira yanayoweza kuwaka na ya kulipuka
8. Kipimo thabiti na cha kuaminika chenye kiwango cha chini cha kengele ya uwongo
9. Maisha ya huduma ya muda mrefu ya nyuzi za macho, hadi 30 matengenezo ya miaka bila malipo
Performance characteristics of mfumo wa ufuatiliaji wa mtetemo wa fiber optic uliosambazwa:
Umbali mrefu wa joto: 40km
Muda wa majibu ya haraka: kawaida 1 pili
Usahihi wa nafasi ya juu: 2-50m
Unyeti wa juu: inaweza kutambua mitetemo ndani ya mita 40 karibu na kebo ya macho
Ufuatiliaji wa wakati huo huo wa vibration na joto
Kazi ya ufuatiliaji wa mtandaoni kwa makosa ya fiber optic
Friendly user software that provides a visual interface
Performance indicators of mfumo wa ufuatiliaji wa mtetemo wa fiber optic uliosambazwa:
Technical performance
Fiber type single-mode fiber
Measurement distance of 40km
Positioning accuracy of 1m~50m
Sampling interval of 0.5m
Measurement time typical 1 pili
Measurement channels 1, 2, 4, 8
Vibration signal bandwidth ≤ 5KHz
Vibration measurement sensitivity ≤ 40m
Kiwango cha kipimo cha joto -100 ℃~200 ℃
Sensor ya joto ya fiber optic, Mfumo wa ufuatiliaji wa akili, Kusambazwa fiber optic mtengenezaji nchini China
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