Introduction To Industry Scenarios
The core of the power generation industry consists of five major sections: boiler turbine thermal pipeline network water treatment ash transportation and desulfurization. The entire process involves high temperature, high pressure, high vibration, strong electromagnetic interference, and complex media (water, steam, oil, mortar, acid and alkali), which require extremely high requirements for safety interlocking, precise measurement, signal isolation, long-distance stable transmission, explosion prevention/corrosion prevention/high temperature resistance.
Typical Measuring Points:
Boiler drum water level, deaerator/condenser/high and low pressure level, oil tank/water tank level/main steam/feedwater/oil/wind and smoke pressure, furnace negative pressure, pressure before and after safety valve/high-temperature steam, feedwater, flue gas temperature/desulfurization/denitrification/wastewater treatment acid-base tank, neutralization tank level and pressure/ash silo pump, ash silo material level, pneumatic conveying pressure
Adapt to Core Products
QDY30A/QDY60 series immersion/static pressure liquid level transmitter (including high temperature/anti-corrosion/explosion-proof types)
QDW90A-3051 single flange liquid level transmitter (for high temperature, viscous, and easily crystallizable media)
QDKG intelligent pressure switch/pressure transmitter (including explosion-proof/intrinsic safety, high temperature, negative pressure type)
GLG series signal isolator/RS485 isolation converter (4-20mA/0-10V/PT100/switch isolation)
S803/SS803 intelligent digital display instrument (local/remote display, alarm, interlock, accumulation, communication)
Product Function
High safety risk: Full/insufficient water in the steam drum can easily cause dry boiling, pipe bursting, and steam turbine water shock; Overpressure can easily cause pipeline rupture and explosion; Sparks in explosion-proof areas can easily cause fires and explosions.
Inaccurate measurement and large drift: High temperature/vibration/corrosion cause zero drift, decreased accuracy, and short lifespan of ordinary instruments; Electromagnetic interference causes signal jumping and DCS misjudgment.
Unstable signal transmission: Long distance cables are susceptible to interference, signal attenuation, packet loss, and asynchrony, which affects the quality of regulation and the reliability of interlocking.
High maintenance costs and significant downtime losses: frequent instrument failures require downtime for maintenance, manual calibration, and frequent replacement; Unplanned downtime results in losses of millions per day.
High energy consumption and low efficiency: Inaccurate liquid level/pressure control leads to low boiler thermal efficiency, high coal consumption, high exhaust gas temperature, and environmental protection exceeding standards.
Addressing Industry Issues
High safety risk: Full/insufficient water in the steam drum can easily cause dry boiling, pipe bursting, and steam turbine water shock; Overpressure can easily cause pipeline rupture and explosion; Sparks in explosion-proof areas can easily cause fires and explosions.
Inaccurate measurement and large drift: High temperature/vibration/corrosion cause zero drift, decreased accuracy, and short lifespan of ordinary instruments; Electromagnetic interference causes signal jumping and DCS misjudgment.
Unstable signal transmission: Long distance cables are susceptible to interference, signal attenuation, packet loss, and asynchrony, which affects the quality of regulation and the reliability of interlocking.
High maintenance costs and significant downtime losses: frequent instrument failures require downtime for maintenance, manual calibration, and frequent replacement; Unplanned downtime results in losses of millions per day.
High energy consumption and low efficiency: Inaccurate liquid level/pressure control leads to low boiler thermal efficiency, high coal consumption, high exhaust gas temperature, and environmental protection exceeding standards.
Direct Customer Benefits
Safety benefits (core)
Eliminate accidents of full/insufficient water in the steam drum, avoid pipe bursting and steam turbine water impact, and reduce unplanned shutdowns by ≥ 90%.
Explosion proof instruments and isolators eliminate the risk of sparks in explosion-proof areas, meeting the GB 50160/GB 3836 explosion-proof specifications.
Pressure overpressure/underpressure interlock prevents pipeline rupture and safety valve misoperation, reducing the safety accident rate by ≥ 80%.
Precision and stability benefits
High precision of 0.2-0.075 level, liquid level/pressure measurement error ≤ ± 0.1% FS, improved regulation quality, and increased boiler thermal efficiency by 1% -3%.
Isolators suppress interference, signal drift is ≤ ± 0.05% FS, jump elimination, and DCS misoperation reduction is ≥ 95%.
High temperature/anti-corrosion/explosion-proof design extends instrument life by 2-3 times and reduces failure rate by ≥ 70%.
Cost benefit (quantitative)
Coal consumption reduction: thermal efficiency increased by 1%, 300MW unit saves about 12000 tons of coal per year, saving costs of ≥ 8 million yuan per year.
Maintenance cost reduction: extended lifespan+reduced failure rate, reduced annual maintenance costs by ≥ 60%, reduced labor/spare parts expenses by ≥ 500000 yuan/year.
Reduced downtime losses: Unplanned downtime is reduced by 90%, avoiding single downtime losses of ≥ 2 million yuan.
Management and compliance benefits
Accurate and traceable data, meeting the DL/T standards and environmental ultra-low emission requirements of the power industry, and avoiding fines.
On site+remote display, inspection efficiency is improved by ≥ 50%, and labor costs are reduced.
Intelligent interlocking+alarm, response time ≤ 1 second, accident handling efficiency improved by ≥ 80%.
