Product Parameters
| Type of steam turbine |
Back-Pressure Steam Turbine Generator |
| Model No. of steam turbine |
B15-6.5/0.7 |
| Rated power |
MW |
15 |
| Rated speed |
r/min |
3000 |
| Rated steam inlet pressure &variation range |
Mpa(a) |
6.5 |
| Rated steam inlet temperature &variation range |
ºC |
470 |
| Rated steam inlet flow |
t/h |
120 |
| Rated exhaust steam pressure &variation range |
Mpa(a) |
0.7 |
| Steam consumption under rated conditions |
kg/kw.h |
8 |
| Max component weight |
t |
~12 |
| Dimension |
m |
3.84*2.2*2.01 |
| OEM service is available. According to customers's parameter requirement, we can customized R&D, produce and supply steam turbines. |
Parameters of other Back-Pressure Steam Turbine Generator
Generator parameters
Product Description
Backpressure steam turbine
is a type of steam turbine where the exhaust steam pressure is intentionally maintained above atmospheric pressure. Unlike condensing turbines (which exhaust steam at low pressure into a condenser), backpressure turbines discharge steam at a higher pressure, allowing the exhaust steam to be reused for process heating or district heating purposes. This design makes them highly efficient in combined heat and power (CHP) systems.
Working Principle
Steam with a certain pressure and temperature enters the various stages of working blades of a back - pressure steam turbine through the main steam valve. The steam undergoes an expansion process in the impeller, increasing in volume and decreasing in pressure. In this way, the thermal energy of the steam is converted into kinetic energy, driving the rotation of the turbine rotor, which in turn drives the generator or other equipment to operate. The steam after doing work is discharged from the steam turbine at a certain back - pressure. This back - pressure is usually used in the process or heating system. The discharged steam can then enter the condenser for condensation or be directly used in the process. The back - pressure can be adjusted by regulating the steam intake and exhaust volume of the steam turbine, or by directly adjusting the pressure of the discharged steam through the back - pressure regulating mechanism.
Applications
- Power industry: It is commonly used in power plants, cogeneration plants, and district heating systems. For example, in some small - scale power stations, the back - pressure steam turbine converts the energy of steam into mechanical energy and then into electrical energy to supply power to the grid. In district heating systems, the heat of the exhaust steam is used to meet the heating needs of residents or industries.
- Chemical industry: It can be used to drive various chemical equipment, such as compressors, pumps, and fans. Meanwhile, the waste heat generated by the back - pressure steam turbine can be used for process heating or cooling. For instance, in the production process of ammonia synthesis and other chemical processes, it provides power for related equipment and utilizes waste heat to assist the process.
- Metallurgical industry: It is used to drive blast furnace blowers, steel - making converters, and other equipment. These equipment require a large amount of mechanical energy to operate, and the back - pressure steam turbine can meet their power requirements.
- Light industries such as papermaking and food processing: In a paper mill, the back - pressure steam turbine provides power, and the exhausted steam can be used in the paper - drying process. In a food processing factory, it can be used to drive equipment and provide heat energy for heating, cooking, and other processes in food processing.
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Advantages
- High energy utilization efficiency: Generally, higher steam pressure and temperature are adopted, enabling more efficient utilization of the thermal energy of steam. Moreover, the exhaust steam of the back - pressure steam turbine can be directly used in industrial production processes such as heating, or in district heating, realizing the cascaded utilization of energy and reducing energy waste.
- Strong adaptability: It can adjust the power output according to actual needs. By changing the steam intake and exhaust volume, it can adapt to different process flows and load changes. At the same time, it can meet different thermal energy requirements by adjusting the back - pressure, adapting to a variety of process conditions.
- Flexible operation: It can accurately adjust the output power according to production needs, achieving precise control of the process, which is convenient for enterprises to flexibly arrange equipment operation according to production plans.
- Cost - saving: Compared with some systems that require additional heat - exchange equipment to utilize steam waste heat, the back - pressure steam turbine does not require additional heat - exchange equipment, reducing investment costs to a certain extent. And due to its high energy utilization efficiency, it can also reduce operating costs in the long run.
YTS's Technical Advantages
1. The multi-stage impulse steam turbine has 2 to 4 more pressure stages than that of other manufacturers. The stage distance is reduced to allocate more stages in the flow part, the enthalpy drop of each stage is reduced. The diameter of flow structure is reduced, thus the blade height loss is significantly reduced. This technology was selected and listed in 2019 National Recommended Catalogue, Guideline and Cases of Industrial Energy-Saving Technologies and Equipments, released by Chinese Ministry of Industry and Information Technology.
2. Monolithic forged rotor assembly adopts whole forging method and it's a rigid rotor. The integration of the impeller and the shaft increases the safety and stability of operation. The blade profile is optimized and the partition is synchronously matched.
3. Reduce the rotor diameter and increase the blade length, compress various contact gaps to reduce steam leakage and make the steam act to the maximum extent, thereby to achieve high efficiency and more electricity generation under the same working conditions.
4. Add a sleeve cylinder, usually in casting or forging type, reinforced with a partition sleeve, and works with the newly added pressure stage and partition to increase the working air tightness of the new pressure stage, reduce air leakage and enhance operation safety, thus improve the working capacity of the unit;
5. Increase the length and quantity of comb-teeth steam seal from original 36 teeth to 45 teeth, and the tooth height is also increased, which effectively reduces steam leakage;
6. Comparing with similar steam extraction back pressure units from domestic market, it can improve efficiency by 10% to 30%, reduce the unit dimension and occupy less space at the same time. The optimization of the flow structure enables the unit to produce more power under the same working conditions, thus generate energy-saving economic benefits.
Detailed Photos
FAQ
1. Question: How to determine product parameters?
Reply: Design steam turbine units with different working conditions according to the customer's current production technical parameters to meet production needs.
2. Question: How to determine product quality?
Reply: You can do it through on-site field visits and provide relevant inspection and testing reports and other materials.
3. Question: How to ensure after-sales service?
Reply: The company's technical staff solves difficult problems online and offline.
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