分布式温度传感器

DTSX通过充分利用光纤电缆特性的传感技术,实现了线路和表面的温度测量,并且可以通过沿测量对象的形状进行铺设,持续测量温度分布。它适用于储罐和管线中的液体/气体泄漏检测、电力电缆温度监测、异常热量检测以及生产设备和社会基础设施维护。此外,它还具有出色的防爆和感应电阻,因此可以放心使用。

  • DTSX1将热检测所需要的功能存储在一个盒子中。DTSX1通过光纤传感器电缆进行测量,并执行高温热检测,从而以高精度分析温度数据。

  • DTSX3000可以用于传统和非传统的油/气井下应用、LNG和炼油厂、管道和油罐泄漏检测以及其他需要监控温度的应用。

概述:

A belt conveyor fire detection solution employing the DTSX distributed optical fiber temperature sensor can greatly reduce crises that can threaten a company's survival.

行业:
概述:

With industrial and economic development comes increasingly large and advanced power plants and factories. Nevertheless, we find many cases where the original cables, cable tunnels, and other components of the power infrastructure have languished under continuous operation.

概述:

Reactor/Furnace Wall Healthiness Monitoring with a Fiber Optical Temperature Sensor

概述:

Risk management is crucial when expanding your business.

概述:

Temperature Monitoring Solution for 
Quick Detection of Fires in Fume Ducts

概述:

Temperature Monitoring Solution for Maximum VSD Operating Efficiency
 

概述:

"Improved Detection of Bus Bar Overheating"

 

Customer Concerns

Bus bars for high current power distribution

Bus bars are uninsulated strips of a highly conductive metal such as copper or aluminum. As they have lower electrical resistance than insulated power cables, they can carry large electrical currents and are thus suitable for use in power distributions systems in power plants, substations, factories, and data centers. Bus bars are also used in power distribution boards. Bus bars offer great flexibility as they are made of highly malleable metals that can be easily shaped to suit any number of facility layouts.

Abnormal overheating of bus bars

Bus bars are bolted, clamped, or welded to each other and to other apparatuses. If a bolt or clamp comes lose or a welded joint fails, abnormal heating may occur at that location due to an increase in the electrical resistance. The overheating further increases the electrical resistance and can lead to a burnout or even a fire.

In order to prevent overheating at any of the bus connections, the connections should be inspected on a regular basis. However, as the bus bars are often inside plastic or metal bus ducts and covers, and are often in difficult to access locations, visual inspection can be difficult.

The burning out of a power supply bus bar is a threat to plant safety and can lead to an unplanned shutdown of plant operations. To eliminate such risks and avoid the huge costs of lost production, it is vital to quickly detect and immediately respond to any indication of overheating in a power bus bar.

Abnormal overheating of bus duct

The Solutions and the Benefits

24/7/365 temperature monitoring to detect overheating

Burnouts in a power bus bar can be prevented by quickly and accurately detecting abnormal rises in temperature and locating the hot spots. As bus bars are surrounded by strong electric fields, conventional electric sensors such as thermocouple thermometers are not suitable for this purpose. Bus bars also sometimes follow complicated paths through plant structures and other types of buildings and may have a number of blind spots that cannot be readily imaged using thermal imaging cameras.

The Yokogawa DTSX is a unique and innovative temperature monitoring solution that uses an optical fiber cable as a temperature sensor. Since the sensor is not affected by electromagnetic noise, the DTSX is able to monitor distribution of temperature in units of 1 meter accuracy under a strong electric field. By quickly detecting overheating and pinpointing the location of a hotspot, the DTSX ensures that any problem can be responded to immediately, before it leads to a costly and expensive plant shutdown.
The optical fiber cable can be installed directly on a bus bar and on the surface of a bus duct or cover.

Efficient inspection inside bus ducts

Thanks to its ability to continuously detect abnormal rises in temperature and pinpoint hot spots even when a bus bar is located inside a bus duct, the DTSX is also useful in maintenance applications such as locating bolts that need to be tightened.

The benefits

  • Accurate temperature monitoring under a strong electric field
  • Flexible sensor cable for complex extended structure
  • Quick detection with abnormal location to prevent burnout
  • Condition based inspection work by temperature changes
Cable laying example for bus duct

How DTSX Works

Measuring the intensity of Raman scattered light
Using pulses of laser light beamed through an optical fiber cable, the DTSX is able to detect temperature-dependent variations in signal frequency that are the result of a phenomenon known as Raman scattering that occurs along the entire length of the optical fiber cable, and it also can determine the locations of those temperature readings using light that is bounced back (backscattering) to the source.

Example: Along a 6,000 meter optical fiber cable, nearly 6,000 measurement points
By measuring how long it takes light to make a round trip back to the source (backscattering), the DTSX is able to calculate the location for each temperature reading. Abnormalities can be located with a spatial resolution of just one meter.

​​​​​​

想要了解更多的信息,技术&解决方案?


联系我们
置顶
WeChat QR Code
横河电机(中国)有限公司
WeChat Recruiting QR Code
横河电机中国招聘