BMH-FC digital high temperature furnace industrial monitoring is a special closed-circuit television equipment used in high temperature environment. It can be widely used in heating furnaces, steam boilers, glass melting tanks, sintering furnaces and other industrial high-temperature furnaces in metallurgy, power, building materials, light industry, chemical machinery and other industries. The equipment is cooled by air cooling and water cooling. The equipment can directly extend the camera lens into the furnace to observe the operation of workpieces, materials and flame shapes in the furnace, which not only ensures production safety, improves product quality, improves the working environment, reduces labor intensity, and facilitates centralized scheduling and automation of production process.
principle
This equipment consists of an automatic exit device, a control system, a color monitor, etc. In the automatic exit device, the probe cover is equipped with a digital color camera and a sapphire high-temperature resistant pinhole lens. The camera and lens are continuously purged with compressed air or nitrogen in the probe cover, and heat is brought into the furnace through the air outlet at the front end to prevent coal ash or dust in the furnace from entering the light inlet of the dirty lens and affecting the image quality
Image section
The image part includes color camera, high-temperature pinhole lens and color monitor. The color camera and high-temperature pinhole lens are installed in the probe cover and the probe extends into the furnace. The camera captures the image in the furnace through the pinhole lens to form a full TV signal, which is transferred by the control system and sent to the color monitor to display the image.
Air circuit system
The clean and dry compressed air is input from the air compression station, which is divided into two paths after G1 ″ to G1/2 ″ three-way connection. One is sent to the furnace door, where an air curtain is formed to prevent the flame from blowing out and effectively reduce the thermal radiation; The other path is sent to the control system through filtering and clear box, and then through precision filtering. After decompression, it is sent to the inner chamber of the probe cover and the probe cover compartment to cool the camera and high-temperature pinhole lens in the probe.
When the pressure of compressed air sent from the air compression station is lower than the specified value of 0.3Mpa, the pressure switch on the air path in the control system will reflect the information of insufficient pressure to the programmable controller (PLC), and the programmable controller will output the exit signal again, the motor in the control device will start, and the probe will exit the furnace.
Power Supply
This equipment uses AC 220V power supply. The controller device outputs AC 220V to provide the motor on the automatic exit device to achieve probe extension and exit, and the output AC 24V or DC 12V to provide CP624 color camera for work.
When the equipment is powered by UPS, the function of power-off exit can be realized. At this time, the equipment is powered by UPS. The mains power only reflects whether the power is cut. See the wiring diagram for the specific connection of the power supply.
performance parameter
Performance index of image system
Scanning mode: PAL system 625 lines/50 fields 2:1 interlaced
Video output: 1Vp-p synchronous negative polarity 75 Ω
Signal to noise ratio: no less than 42db
Brightness identification level ≥ 8
Horizontal resolution of color CCD: 2 million pixels
Visual angle: 81 degrees (diagonal)
Aperture: electric
Power consumption: 120W
Stroke: 760mm
Camera (see camera manual for details)
Camera model: BMH-FC-910FWD
Min-imum illumin-ation: 0.1LUX, F0.75
Definition: 200W
Signal to noise ratio: 50db
Focus adjustment: manual
Ambient temperature - 10 ℃~+50 ℃
Protection grade IP65
Standard PAL
Shell material: stainless steel
Pinhole lens
Focus: 3.5-8mm manual adjustment
Relative aperture: 1:3.5
Aperture control range: F3.5-F360
Turning angle: 90 °
Field angle: f=3.5 mm
Diagonal direction: 81 °
Horizontal direction: 69 °
Vertical direction: 54 °
Connection mode: CS seat
Overall dimensions: φ 25X787mm
Auto exit function
It is required to have the automatic exit function in one of the following three cases
When the temperature in the probe cover cavity exceeds the set value (≥ 55 ℃)
When the compressed air pressure is lower than the specified value (≤ 0.3Mpa)
In case of power failure (USP power supply is required)
Manual control function
Press the extension button S101 and exit button S102 to realize the probe extension and exit functions (the equipment is in normal working state)
The probe cover can be pushed and pulled manually to reach the extension and exit functions (the equipment is in normal working state)
Remote control function
The extension and withdrawal of the probe cover can be remotely controlled in the central control room by using the operating keyboard.
Overall dimensions
Automatic exit device (L × W × H)mm 1320 × two hundred and twenty-five × three hundred and eighty
Control system (L × W × H)mm 470 × three hundred × one thousand and two hundred
Environmental conditions
(A) Compressed air inlet
Inlet pipe diameter: G1 ″
Inlet pressure: 0.4~0.6Mpa
Flow: 0.3~0.4M3/min
Inlet temperature: ≤ 35 ℃
(B) Working environment temperature: automatic exit device – 5 ℃~90 ℃ (excluding probe cover)
Control system - 5 ℃~70 ℃
(C) Furnace temperature ＜ 2000 ℃
