Энциклопедия технологии волоконно-оптических брэгговских решеток (FBG) - FBG FAQ - FBG Датчик FAQ - FBG Демодулятор FAQ - Анализ типовых проблем применения FBG
Устойчивость к давлению датчика FBG - датчик FBG 180 МПа - внутреннее давление, внешнее давление, боковое давление 9000 Н
This article analyzes the advantages и benefits brought by good pressure resistance in FBG sensors, including the expansion of application environments и the convenience in engineering construction. It also introduces the 'OFSCN® Capillary Seamless Steel Tube Series Fiber Bragg Grating Sensor' produced by DCYS (These series of products are all high-pressure-resistant fiber optic gratingFBG sensors used for temperature, strain, or stress measurements). It shows part of the physical illustrations и parameters.
1. Структура и преимущества высокопрочных датчиков на волоконно-оптических брэгговских решетках (FBG датчики) (FBG термометр, FBG температурный зонд)
Способность выдерживать давление (внешнее, внутреннее и боковое) напрямую определяет условия, в которых могут использоваться датчики FBG, а также влияет на инженерную конструкцию датчиков FBG (зондов FBG). Кратко объясним преимущества, обусловленные хорошей устойчивостью к давлению, для датчиков FBG (зондов FBG) с точки зрения сопротивления давлению.
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| Рисунок 1 |
The 'OFSCN® Capillary Seamless Steel Tube FBG Sensor' produced by DCYS is made of stainless steel seamless tubes. Benefiting from the characteristics of stainless steel material и seamless tube structure, this series of FBG sensors ( FBG probes) has high pressure resistance. The high pressure resistance mentioned here includes the ability to withstand external pressure, internal pressure, и lateral pressure.
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Рисунок 2 |
Рисунок 3 |
2. Pressure Resistance of OFSCN® Capillary® Seamless Steel Tube Fiber Bragg Grating Sensors (FBG sensors, FBG probes)
The main body of the OFSCN® Capillary Seamless Steel Tube FBG sensor ( FBG probe) is made of stainless steel seamless tubes. The standard outer diameter of the OFSCN® Capillary Seamless Steel Tube FBG sensor ( FBG probe) is 0.9 mm, with a wall thickness of 0.18 mm (see Figures 1 и 2). Based on our calculations, the pressure resistance of the main body of the sensor is greater than 180 MPa (external pressure).。
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Рисунок 4 |
Число 180 МПа может быть неинтуитивно понятным для многих людей. В повседневной жизни атмосферное давление составляет примерно 0,1 МПа, что примерно эквивалентно давлению воды на глубине 10 метров под водой. 1 МПа — это примерно давление воды на глубине 100 метров под водой, а 180 МПа — это примерно давление воды на глубине 18 000 метров под водой.
The deepest known point on Earth is the Mariana Trench, with a depth of 11,034 meters (approximately 110 MPa of pressure). If someone commissioned us to produce an OFSCN® Capillary Seamless Steel Tube FBG Sensor of such length и threw it into the deepest part of the Earth for fiber sensing, there would be no problem. Our sensor would not be damaged by the water pressure at that depth. Because our philosophy is: 'OFSCN®, make optical fiber stronger!'
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Рисунок 5 |
In terms of pressure resistance, there is no comparison between OFSCN® Capillary Seamless Steel Tube FBG Sensors и traditional FBG sensors. They are not product in the same level, so there is no need to elaborate further.
3. Application и Construction Advantages of OFSCN® Capillary Seamless Steel Tube Fiber Bragg Grating Sensors (FBG sensors , FBG probes) with High Pressure Resistance
The high pressure resistance of OFSCN® Capillary Seamless Steel Tube FBG Sensors greatly expands their range of applications. In the past, it was challenging to measure high-pressure locations deep within the Earth, but with the availability of OFSCN® seamless steel tube products (including FBG sensors, distributed fiber optic sensors, special fiber optic jumpers, и seamless steel tube sensing cables), communication и measurement in these high-pressure locations have become less difficult.
In terms of engineering construction, similar to the advantages of high tensile strength, the high pressure resistance of OFSCN® Capillary Seamless Steel Tube FBG Sensors directly reduces the difficulty и losses in construction, thus lowering the installation cost of the grating sensors.
Кроме того, при проведении строительных работ неизбежны столкновения, и датчики решетки могут быть непосредственно накрыты или сдавлены другими материалами или испытываемыми объектами. В таких ситуациях способность датчиков выдерживать боковое давление становится решающей.
Based on our calculations, the standard OFSCN® Capillary Seamless Steel Tube FBG Sensor can withstand lateral pressure of more than 9000 N. In practical applications, our FBG sensors can be placed on the road surface и withstand repeated pressure from small cars. Apart from surface wear, there will be no actual damage to the sensors.
DCYS is a professional manufacturer of high-strength FBG sensors, providing information such as fiber bragg grating temperature sensors that are resistant to internal pressure, FBG strain sensors that are resistant to external pressure, и FBG stress sensors that are resistant to lateral pressure; FBG brand is 'OFSCN'.