7.5MW High Temperature High Backpressure Steam Turbine B7.5-8.83/6.5//535

• Customization: Available
• After-sales Service: Supported
• Warranty: 12 Months After Supply
• Model NO.: B7.5-8.83/6.5//535
• Power: 10MW
• Generator Type: Synchronous Generator
• Certification: CCC, ISO, TLC
• Standard: Nonstandard
• Type: Medium Steam Turbine
• Energy-Saving Ratio: at Least 20%
• Form: Impulsive
• Material: Comply with Standards
• Adjustment Method: Electro-Hydraulic Regulation
• Steam Inlet Pressure: 13.1MPa
• Steam Inlet Temperature: 535ºC
• Steam Consumption: 24.57kg/Kw.H
• Steam Intake: 240ton/H
• Speed: 3000r/Min
• OEM, ODM: Available
• Transport Package: Seaworthy Package
• Specification: Custom
• Trademark: YTS
• Origin: China
• HS Code: 840682
• Production Capacity: 50unit/Year
• Package Size: 500.00cm * 180.00cm * 305.00cm
• Package Gross Weight: 1500.000kg

Product Description

Product Parameters

Type of Steam Turbine	High Temperature & Ultra-High Pressure High Backpressure Steam Turbine
Model No. of Steam Turbine	B7.5-8.83/6.5//535
Rated Power	MW	7.5
Max Power	MW	10.8
Rated Speed	r/min	3000
Rated Steam Inlet Pressure	Mpa(a)	8.83
Rated Steam Inlet Temperature	ºC	535
Rated Steam Inlet Flow	t/h	380
Max Steam Inlet Flow	t/h	422
Rated Exhaust Steam Pressure	Mpa(a)	6.5
Rated Exhaust Steam Temperature	ºC	494
Min Exhaust Steam Flow	t/h	67
Exhaust Temperature at Min Exhaust Steam Flow	ºC	473
Max Exhaust Steam Temperature During No-load Operation	ºC	490
Relative Internal Efficiency Under Rated Conditions	%	78
Max Component Weight	t	14
Dimension	m	4.78*1.68*2.93
OEM service is available. According to customers's operation requirement, we can customized R&D, produce and supply steam turbines.

 

Model	Power (MW)	Steam Inlet Parameter		Steam Consumption (kg/kwh)	Exhaust Steam Pressure (Mpa)	Steam Intake (T/H)	Speed (r/min)
		Pressure (Mpa)	Temperature (ºC)
B3-8.83/6.2/535	3	8.83	535	50	6.2	170	3000
B7.7-8.83/6.5/535	7.5	8.83	535	52.8	6.5	380	3000
B7.5-9.2/6.7//535	7.5	9.2	535	50.5	6.7	360	3000
B10-13.1/6.9//535	10	13.1	535	24.5	6.9	240	3000

DYNAMO					EXCITER
Model	Capacity	Voltage	Power Factor	Efficiency	Power	Voltage
	KVA	V		%	kW	V
QFK-3-2	3750	6300	0.8	95.3	30	100
		3150
QF-3-2	3750	10500	0.8	95.3	30	100
		6300
QF-6-2	7500	10500	0.8	96.4	45	150
		6300
QF-7-2	8750	10500	0.8	97	45	150
		6300
QF-12-2	15000	10500	0.8	97	65	230
		6300
QF-15-2	18750	10500	0.8	97	65	230
		6300
QF-25-2	31250	10500	0.8	97.4	105	230
		6300
QF-30-2	37500	10500	0.8	97.6	105	230
		6300

 

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.

1. Industrial CHP Systems

• Used in factories, refineries, and paper mills to generate electricity while providing steam for processes like distillation, evaporation, or heating.
• Example: A sugar mill uses backpressure turbines to generate power and supply steam for sugar refining.

2. District Heating
• Supplies high-temperature steam or hot water for residential/commercial heating in cities (e.g., Copenhagen's CHP network).
3. Mechanical Drive
• Directly powers pumps, compressors, or fans in industrial settings (e.g., in oil and gas plants)
 

• Steam Inlet: High-pressure steam from a boiler enters the turbine and expands through a series of nozzles and blades, converting thermal energy into mechanical shaft power (used for generating electricity or driving machinery).

• Exhaust Steam: Instead of releasing low-pressure steam into a condenser, the turbine exhausts steam at a controlled higher pressure (e.g., 0.5-5 bar, depending on the application).

• Heat Utilization: The high-temperature exhaust steam is directed to industrial processes (e.g., heating, drying, or powering other equipment) or residential/commercial heating systems, maximizing energy efficiency by eliminating "cold source losses" (common in condensing turbines).
 

• High Energy Efficiency: No heat loss to a condenser; exhaust steam energy is fully utilized.
• Lower Capital Cost: Simpler design (no condenser, cooling towers, or related systems).
• Compact Size: Ideal for space-constrained industrial sites.
• Reliable for Stable Heat Loads: Performs efficiently when heat demand is consistent (e.g., continuous industrial processes).
• Backpressure steam turbine is a cornerstone of sustainable energy systems, optimizing both power and heat production.

YTS's Technical Advantages

 

Self-Developed High-Efficiency Steam Turbine Unit

By adopting 2-4 additional pressure stages and advanced blade,nozzle,and baffle nozzle profile designs, our turbine delivers:

• Reduced stage flow distance and lower enthalpy drop per  
  stage, significantly decreasing steam leakage.

• Enhanced its load flexibility and overload performance.

Advanced Design of Rotor & Blades
(1) Rotor

Significantly lower vibration and failure rates  compared to
other manufacturers
The rotor is numerically controlled and finely processed to completely eliminate residual stress.

(2) Blades

Ensures reliable operation under transient conditions
• Adopts variable root diameter design, allowing steam to expand smoothly along the flow-path.
• The moving blades at all stages are straight blades,together with a T-type designed impeller.

Eliminates resonant frequencies
The top of each blade is fully equipped with a band for enhanced strength.
Minimized steam leakage for enhanced internal efficiency

The blade tip features a 2-4 labyrinth seal, effectively reducing steam leakage losses.

Advanced Design of Steam Chamber & Cylinder
(3) Steam Chamber

Uniform thermal expasion of cylinder prevents front deformation and steam leakage
• Turbine steam chamber adopts an integrated design with an optimized spherical structure, delivering enhanced rationality and compactness. 
• The high-pressure steam inlet chamber uses graphite ring sealing for enhanced safety and reliability.

(4) Cylinder

Fast start-up with rapid warm-up
• 30% quicker start-up than conventional designs and reducing steam loss.
• Maintain free thermal expansion during startup,shutdown and load variations.
• Integrally-cast cylinder features compact dimensions,simplified structure, and minimized leakage points.

Patented Design & Easier Maintenance
(5) Steam Seal

Patented Steam Sealing Design
• Reverse-pressure air purge system ensures zero steam leakage during operation.
• Advanced labyrinth seal configuration cuts leakage > 50% while minimizing frictional damage.
(6) Maintenance/Servicing
• Simplified maintenance operation and minimized downtime ensure extended annual working hours.
• The forged integral rotor and full-circumference steam admission design ensure reliable operation under all specified load conditions.

 

Company Profile

 

Anhui Yuteshuang Energy Conservation Technology Co.,Ltd.(YTS) specilized in producing energy-saving steam turbines and optimizing thermal systems for high-consumption industries: Steel, Coking, Congeneration(CHP), Papermaking, Printing & Dyeing, Sugar, Metallurgy and Building materials, including but not limited to these indutries.

Our main business focuses on producing and optimizing the following equipment:
• R&D and manufacturing of high-efficiency and energy saving steam tubines
• Improving turbine flow-path structures to enhance power generation efficiency
• Utilizing waste heat & pressure for power generation, replacing pressure-reducing equipment
• Second-hand turbine generator sets

With a full-service team covering R&D, design,manufacturing, installation and commissioning, and after-sales maintenance,we hold 67 utility patents and 23 invention patents. Our turbines outperform other suppliers by 7%-40% in efficiency. Our core technologies and cases are featured in China's MIIT Industrial Energy-saving Technology Catalog and Guidelines, and we are a company designated by the state to provide energy-saving diagnosis services.
 

Certificates And Patents

FAQ

 

1. Q: How to determine the parameters of the steam turbine and get custom service?
 A: Our technical team will help to find a suitable steam turbine solution according to your current technical requirements and energy-saving target. Customized equipment will be manufactured and tested in our factory before shipment.

2. Q: Will installation services be provided?
A: Yes. We will dispatch our technical team to your site for installation and debugging upon equipment arrival.

3. Q: Can I expect to easily access after-sales support when needed?
A: Rest assured. Our technical team provides dual-channel support(online/onsite) to resolve all potential issues. When necessary, we will promptly dispatch engineers to your site for installation and maintenance.

4. Q: Does your company welcome on-site visits?
A: Yes. We warmly welcome scheduled facility visits and will arrange every details for our meeting.

5. Q: Do you offer second-hand equipment?
A: Yes. You may browse our second-hand equipment category in the product section. Inquiries for technical details are welcome.

6. Q: Packaging Specifications
A: Seaworthy package. Standard packaging uses stretch film. Also provide custom wooden cases for specialized equipment or upon request.