Steam temperature and pressure reducers are widely used in various boiler systems, steam power generation devices, and are key equipment for purchasing steam from external sources, directly affecting energy efficiency, system operation, and downstream equipment safety.

A thermal power plant in Jiangsu provides thermal and electric services to about 100 enterprises in the high-tech zone where it is located. The original temperature and pressure reducer of the factory was designed and manufactured by a domestic manufacturer, and the important equipment in the device, pressure reducing valve, temperature reducer, and temperature reducing water regulating valve, all came from domestic manufacturers. After the device was put into use, various problems emerged one after another:

1. Steam leakage inside the pressure reducing valve;
2. The linear difference in regulating the pressure reducing valve leads to unstable downstream pressure; Steam overpressure causes frequent tripping of the safety valve, resulting in leakage of the safety valve;
3. The cooling effect of the water spray from the thermostat cannot meet the demand etc, resulting in energy waste, unstable operation of power plants, and significant safety hazards.

The parameters for steam temperature and pressure reduction belong to severe conditions, with characteristics such as high pressure difference and two-phase flow, which have extremely high requirements for design, manufacturing, and installation. Star Controls has a professional technical team, reliable products, and nearly 30 years of industry experience, which can provide comprehensive services such as device design, product procurement, installation of the skid and complete equipment, and after-sales service.

Based on the actual parameters on site and the existing problems of the device, through precise calculation and design, SC has made an overall renovation plan for the user's temperature and pressure reduction device. Using Emerson's professional selection software, select and calculate the models of pressure reducing valves, temperature reducers, and cooling water regulating valves, as well as the installation distance of straight pipe sections and temperature sensors, to ensure the downstream cooling effect.

• Select Emerson Fisher's HP series regulating valve, which has the characteristics of stable structure, good regulating performance, and good shut-off sealing effect, effectively reducing valve leakage;
• Fisher Whisper III noise reducing and Cavitrol III anti cavitation valve cages are selected for valve internals, and two-stage pressure reducing orifice plates are added to effectively reduce valve vibration and noise;
• Considering the poor atomization effect of the actual temperature reducer, combined with on-site parameters, installation location, and economic factors, it is recommended to use Fisher spring mechanical atomization and adjust the ratio of Fisher DMA/AF-HTC temperature reducer to effectively improve the cooling effect and avoid energy waste;
• Two stage design of safety valve: Based on the conventional steam flow rate, a two-stage safety valve protection system is adopted to reduce investment and improve safety;

By optimizing and updating a series of components and systems, the safety and stability of the entire equipment will be greatly improved. SC can complete device design, product procurement, as well as the assembly and installation of the entire equipment in one stop, reducing the complexity of customer procurement and improving efficiency. After the equipment is put into use, we will provide comprehensive after-sales service to eliminate customers' worries, ensure safer and more stable operation of the temperature and pressure reduction system, and bring higher economic benefits.