Post on 17-Mar-2020
smart solutions for combustion and environment
Compressed Air230/115 VAC
Ex-p Control Unit
Control Room
Ex-Zone
Sensor
Furnace
Cooling Air
System PC withThermography Monitor
and Live Video Image
VideoMonitor(Option)
Cooling Water
Fiber Optic Cable
Video-based Thermography for Combustion Processes
The Thermography Analysis System
The system comprises the components of the video system plus the system computer with software modules. It operates as a spatial optical pyrometer on the basis of image data processing and offers, in ad-dition to the video system:
●● Temperature determination of each visible image point of the video sensor
●● Thermal analysis of the local temperature distribution
●● Temperature definition within freely definable measuring window and lines (ROI = Region of Interest / LOI = Line Of Interest).
●● Analysis of thermal samples to identify anom-alies in the combustion process
All data of the thermography system can be transmitted to the process control system via a standardized data interface.
Video Monitoring ThermographyThe Field Components
●● Ex-Sensor with adjustable support, flange, and gas-tight sealing
●● Ex-p control unit●● Connection to Control Room: Fibre Optic
Cable.
The Control Room Equipment
●● Linux based system computer for tempera-ture calculation, thermography presentation
●● Video monitor for online colour display
The Video System
The basic system comprises the above-men-tioned system components, without system computer. It enables visual monitoring through real-time colour video display.
The Video-based D-VTA 200 EX Thermography System
is a modular system for monitoring industrial high temperature processes. Intelligent sensors allow contactless, optical and thermal online ana-lysis of processes in the combustion chamber.Applications include:
●● Petrochemical Industry and Refineries:Thermal Crackers and HeatersSteam ReformersVisualisation of FlamesDetection of Hot Spots and local overheating
●● Steel Industry:Blast Furnace Top ControlCombustion Visualisation and Control in hazardous area.
The Sensors
have been specially developed for the harsh working conditions in hazardous areas (ATEX Zone 1). The sensor housing contains an indu-strial CCD camera. The slim water cooled sensor shaft (043mm) minimises the mechanical stress (abrasive dust) and the thermal influence on the sensor parts in the combustion chamber.The optical system is protected against mecha-nical and thermal damage by sapphire glass at the sensor tip, in addition to air purging. As no moving parts (no mirrors, prisms or motors) are located in the process-oriented area, the sensor achieves a high availability with minimum service requirement.
D-VTA 200 Ex System in a Cracker
Refinery Cracker Chemical Industry
Ex-pControl
Control RoomFurnace
Sensor
Video Monitor(Option)
Thermography-Monitor
Digital Video- and Data Link(Fiber Optic Cable)
System PC
Compressed Airfor Pressurized Enclosure
Cooling Water
230/115 VAC
Ex-Zone
CoolingAir
Ex-Approval, ATEX Zone 1
Approval no. ZELM 09 ATEX 5407 X, II 2 G Ex epx II T4
Video system PAL picture elements: 752(H) X 582(V), fixed focus
Thermography from total radiation
Temperature range 1000°C–2000°C
Optical alignment Sensor 0°; axially-parallel to sensor axis
Optical field of view
Sensor 0°; horizontal 72°; vertical 54°
Data interfaces on the system PC (Thermography System)
RS232, RS422, RS485: ASCII, MODBUS, Siemens RK512; Ethernet: TCP/IP: FTP, MODBUS
Auxillary energy PC: 115 V...230V / 50 Hz or 60 Hz, < 1.000 VA; Field components: 115 V / 60 Hz or 230 V / 50 Hz, < 200 VA
Max. temperature at sensor tip
1.400°C (Water-cooled sensor)
Ambient temperature
Sensor: -10°C…60°C; Ex-p cabinet: -20°c…40°C (optional +55°C)
Material Sensor: stainless steel 1.4571 / 1.4841; Ex-p cabinet: glass fibre reinforced polyester
Dimensions Diameter of sensor tip: 43 mm
Immersion depth in combustion chamber
max. 600 mm from welding plate
Space requirement for sensor
1000 X 500 X 800 mm (LxWxH)
Ex-p cabinet 250 x 400 x 120 mm (LxWxH)
System PC 19" industrial housing, 4HE, depth 450 mm
Weights Sensor: 20 kg; Ex-p cabinet 15 kg
Cooling water volume
350 l/h, 1,5…8 barg
Cooling water temperature
Inlet:< 35°C, Outlet: Temperature increase <10°C
Cooling water quality
Clean, chemically neutral, non-corrosive, Hardness: <5°dH / <28 mMol/l
Compressed air volume
≥30 Nm³/h
Inertgas volume 42 l/min (first purge) none (continuous operation)"
Technical DataAnalysis System
D-VTA 200 Ex Sensor
Steel Industry Blast Furnace Steam Reformer
Thermography scree
smart solutions for combustion and environment
DURAG India
DURAG Japan
DURAG Brazil
DURAG GROUP GermanyDURAG Italy
DURAG Korea
DURAG USA
DURAG UKSMITSVONK Netherlands
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G
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Hegwein GmbHAm Boschwerk 770469 Stuttgart, GermanyTel. +49 711 135 788-0Fax +49 711 135 788-5E-Mail: info@hegwein.de
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