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# 1. Structural Features
This device consists of a pressure reduction system, a desuperheating system, a safety protection device, and an automatic control device.

The pressure reduction system is implemented by high-temperature and high-pressure pressure reducing valves and orifice plates, driven by actuators.
The desuperheating system adopts an in-line water spray desuperheating method. The flow area of desuperheating water through the nozzles is adjusted by the reaction force of desuperheating water on the spray nozzles and the spring force. The steam temperature is regulated by adjusting the opening of the feedwater control valve, which is controlled by an actuator.

The safety protection device directly adopts an impulse safety device (composed of a main safety valve and an impulse safety valve) or a spring-loaded safety valve. When the secondary pressure exceeds the specified value, the excess steam is discharged to the atmosphere, keeping the secondary pressure within the allowable range.

# 2. Main Performance Indicators
1. Inlet steam pressure: P1 ≤ 10 MPa, temperature: T1 < 540 °C;
2. Outlet flow rate Q: The outlet flow of the desuperheating and pressure reducing device can be ideally adjusted within the range of 10%~100%.
3. Variation range of outlet steam pressure P2:
– When P2 < 0.98 MPa: P2 ± 0.04 MPa
– When 0.98 MPa < P2 ≤ 3.82 MPa: P2 ± 0.06 MPa
– When P2 > 3.82 MPa: P2 + 0.15 MPa
4. Adjustment range of outlet steam temperature T2: T2 ± 4 °C.
5. During normal operation, the noise level measured 1 meter downstream of the desuperheating and pressure reducing valve and 1 meter away from the pipe wall shall not exceed 85 dB(A).

Please contact us for detailed parameters and dimensions.