The utility system is composed of a pressure reducing system, a temperature reducing system, a safety protection device and an automatic control device. Pressure relief system - by the pressure reducing valve and orifice plate, through the automatic control system sampling, calculation, output control actuator to adjust the valve opening to achieve the regulation of steam pressure. Temperature reduction temperature reduction system by water mixing pipes, to adjust the nozzle temperature reducing water flow through the area and water supply mechanism with execution control valve opening size to achieve control steam temperature based on the water spray head force and spring force. Safety protection device, is the direct use of impulse safety device (consisting of the main safety valve and impulse safety valve) or spring safety valve to achieve the two time, when the pressure exceeds the set value, the pressure more than part of the steam discharged into atmosphere, so that the two pressure is kept within the permitted value. Automatic control device with RKG - sign type steam pressure and temperature control device, the new steam through the device; can make two steam parameters maintained at a desired stable value.
1 imported P1 steam pressure is less than or equal to 10MPa, the temperature is not higher than 540 DEG t1;
2 outlet flow Q: temperature and pressure reducing device outlet flow Q change range 100% ~ 10%, in this range can realize the ideal adjustment.
The change range of 3 outlet steam pressure for P2: P2 = 0.98MPa, the variation range of P2 is P2 + 0.4MPa; P2 > 0.98 3.82MPa, range of P2 is P2 + 0.06MPa; P2 > 3.82MPa, the variation range of P2 is P2 + 0.15MPa.
4 the regulating range of the outlet steam temperature T2 is T2 + 4.
5 device normal operation, in the lower temperature and pressure relief valve downstream one meter, while the pipe wall one meter measurement of its noise, noise level is not more than 85 db.
A. The temperature and pressure reducing device can be divided into:
1 medium temperature and medium pressure reducing temperature and pressure relief device:
Primary steam parameters (inlet steam parameters): pressure P1= 3.9mpa; Temperature t1=450℃ pressure;
Secondary steam parameters (outlet steam parameters): pressure P2 shall be determined at the user's request; Temperature t2= saturation temperature;
Flow rate: Q=2~360t/h(t/h)
2 high pressure temperature reduction and pressure relief devices:
Primary steam parameters (inlet steam parameters): pressure P1= 5.4mpa; Temperature t1=485℃ pressure;
Secondary steam parameters (outlet steam parameters): pressure P2 shall be determined at the user's request; Temperature t2= saturation temperature;
Flow rate: Q=20~200t/h(t/h)
3 high-temperature and high-pressure temperature and pressure reducing device:
Primary steam parameters (inlet steam parameters): pressure P1=10MPa; Temperature t1=540℃ pressure;
Secondary steam parameters (outlet steam parameters): pressure P2 shall be determined at the user's request; Temperature t2= saturation temperature;
Flow rate: Q=30~240t/h(t/h)
B. Main technical indexes of temperature and pressure reducing device
1 outlet flow of temperature and pressure reducing device
The steam flow at the outlet of the temperature and pressure reducing device varies from 30%Q to 100%Q.
2 the rated outlet steam pressure of the temperature and pressure reducing device is P2
The deviation range of the rated outlet steam pressure of the temperature and pressure reducing device is:
When the rated outlet steam pressure is less than 0.98mpa, it is P2± 0.04mpa
When the rated outlet steam pressure is no more than 3.82mpa, it is P2± 0.06mpa
When the rated outlet steam pressure is greater than 3.82mpa, it is P2± 0.15mpa
Rated outlet steam temperature t2
Rated outlet steam temperature above saturation temperature (including saturation temperature)
The deviation range of rated outlet steam temperature is smaller than that of rated outlet steam temperature t2±5℃
4 noise from temperature and pressure reducing device
When the temperature and pressure reducing device is in normal operation, the noise is measured at 1m downstream of the center line of the outlet of the temperature reducing valve (pressure reducing valve) at the same horizontal level. The overall noise level shall not be greater than 85dB(A). If the user has any special request, it can be settled by the parties through negotiation.
It can reduce the voltage without loss of energy, and the steam supply can be increased through the device. Simple structure, no rotating parts, reliable operation. Easy operation, easy maintenance, automatic adjustment. The energy saving effect is remarkable.
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