The temperature and pressure reducing device is the core pressure/temperature regulating equipment for steam energy transmission and power supply systems, integrating pressure reduction, temperature reduction, pressure stabilization, and temperature regulation. It adjusts high-pressure, high-temperature steam to low-pressure, low-temperature steam that meets process, heating, and heat exchange requirements, and is widely used in thermal power, chemical, papermaking, textile, and centralized heating for industrial parks.

I. Core Features

Pressure Regulation: Throttle high-pressure steam / multi-stage reduce pressure to the set outlet pressure

Temperature Regulation:降温通过雾化喷水，精确控制出口蒸汽温度

Voltage and Temperature Stabilization: Automatically closed-loop regulation, overcoming fluctuation of inlet pressure, ensuring stable outlet parameters.

Safety Protection: Overpressure/over-temperature interlock action, equipped with safety valves and shut-off valves to ensure system safety.

Distributed Adaptation: Satisfying the differentiated steam parameter requirements for various process branches

II. Working Principle

Utilize a coupled control of pressure reduction and temperature reduction:

Pressure-reducing section: High-pressure steam is reduced to the target pressure via a pressure-reducing valve group/multi-stage throttle basket.

Cooling section: The cooling water is sprayed into the steam flow through an efficient atomizing nozzle, instantly vaporizing to absorb heat and cool down.

Mixed section: The soda is thoroughly mixed to ensure the outgoing steam is slightly superheated/saturated steam, free of water hammer.

Self-regulating System: Pressure/temperature sensor feedback signals, PID control of valve opening, for automatic control

III. Core Components

Pressure Reducing Components: Pressure Reducing Valves, Multi-Stage Throttle Cores, Actuators (Electric / Pneumatic)

Cooling Component: Atomizing Nozzle, Water Flow Control Valve, Check Valve

Measurement Instruments: Pressure Transmitters, Temperature Sensors, Flow Nozzles

Control Unit: PLC / Local Control Cabinet, PID Control Module

Safety Attachments: Safety Valve, Drain Valve, Steam Trap, Pressure Gauge

IV. Key Selection Parameters

Inlet Steam: Pressure, Temperature, Flow Rate

Export Steam: Target Pressure, Temperature, Flow Range

Cooling water: Water quality, pressure, temperature, water source

Adjustment Precision: Pressure ±0.05 MPa, Temperature ±5℃ (Standard)

Execution Method: Electric / Pneumatic Adjustment, Manual Backup

Material: Valve body carbon steel / chrome molybdenum steel / stainless steel, compatible with temperature and pressure ratings

Five: Maintenance and Care Points

Routine inspections

Monitor import/export pressure, temperature, and flow of reducing water

Inspect valve actuator operation, for leaks, unusual sounds, or vibrations

Verify that the nozzle is free of blockages, drainage is unobstructed, and there are no water hammer risks.

Regular maintenance services

Clean and de-temper atomizing nozzles, remove limescale/impurities

Inspect the seat and core of the pressure relief valve for erosion and wear; grind and replace if necessary.

Calibration instruments, actuator stroke, and PID control parameters

Replace seal washers; check for leaks in pipeline flanges and valve stems.

Shutdown Maintenance

Blowdown steam and reducing water, winter frost prevention

Nozzles and valve chamber blow cleaning, ensure anti-corrosion protection

Actuator power off, transmission area lubrication and maintenance