Energy-Saving 4MW Condensing Steam Turbine Generator for Power Supply N4-0.88

• Customization: Available
• After-sales Service: Supported
• Warranty: 12 Months After Supply
• Model NO.: N4-0.88
• Power: 4MW
• Generator Type: Synchronous Generator
• Certification: CCC, ISO, TLC, CE
• Standard: Nonstandard
• Form: Impulsive
• Material: Comply with Standards
• Medium: Steam
• Adjustment Method: Electro-Hydraulic Regulation
• Steam Inlet Press: 0.88MPa
• Steam Inlet Temp: 280ºC
• Steam Consumpt: 6.5kg/Kw.H
• Steam Intake: 26ton/H
• Transport Package: Seaworthy Package
• Specification: Custom
• Trademark: YTS
• Origin: China
• HS Code: 840682
• Production Capacity: 50unit/Year
• Package Size: 450.00cm * 360.00cm * 270.00cm
• Package Gross Weight: 15000.000kg

Product Description

Product Parameters

 

Type of steam turbine	4MW high-efficiency Condensing Steam Turbine generator
Model No. of steam turbine	N4-0.88
Rated power	MW	4
Rated speed	r/min	3000
Rated steam inlet pressure	Mpa	0.88
Rated steam inlet temperature	ºC	280
Rated steam inlet flow	t/h	26
Rated exhaust steam pressure	Mpa	0.008
Rated steam consumption	kg/kw.h	6.5
Max component weight	ton	~9
Dimension	meter	4.5*3.6*2.7
OEM service is available. According to customers's parameter requirement, we can customized R&D,produce and supply steam turbines

Other models of condensing steam turbines

model	Power(MW)	Steam inlet parameters		Steam consumption(kg/kw.h)	Steam intake(t/h)	Speed(r/min)	exhaust pressure (Mpa)
		Pressure(Mpa)	Temperature(ºC)
N1.2-0.155	1.2	0.155	195	9.76	11.71	3000	0.007
N4-0.88	4	0.88	280	6.5	26	3000	0.008
N6-3.43	6	3.43	435	4.6	27.6	3000	0.0076
N15-4.9	15	4.9	470	3.95	59.25	3000	0.007
N25-8.83	25	8.83	535	3.58	89.5	6500/3000	0.006
N15-3.43	15	4.9	470	4.1	61.5	3000	0.007

 

dynamo					Exciter
model	capacity	Voltage	Power Factor	efficiency	power	Voltage
	KVA	V		%	KW	V
QFK-3-2	3750	6300 3150	0.8	95.3	30	100
QF-3-2	3750	10500 6300	0.8	95.3	30	100
QF-6-2	7500	10500 6300	0.8	96.4	45	150
QF-7-2	8750	10500 6300	0.8	97	45	150
QF-12-2	15000	10500 6300	0.8	97	65	230
QF-15-2	18750	10500 6300	0.8	97	65	230
QF-25-2	31250	10500 6300	0.8	97.4	105	230
QF-30-2	37500	10500 6300	0.8	97.6	105	230

 

Product Description

Condensing steam turbines are common thermal power
generation equipment primarily used to convert the thermal
energy of steam into mechanical energy,which in turn drives
generators to produce electricity.


A condensing steam turbine is the core power equipment in
thermal cycles such as coal-fired power plants and nuclear
power stations.

 1. Thermal power plant
 •  In large thermal power plants, condensing steam turbines are the main power generation equipment. They form a thermal     power system together with boilers and generators.
2. Industrial waste heat recovery power generation
 • Cement Industry: During the cement production process (such as at the kiln head and tail), a large amount of waste heat is     generated.
 • Metallurgical industry: High-temperature flue gas and waste heat steam generated during the smelting process of steel and   non-ferrous metals.
 •  Chemical Industry: Exothermic reactions in chemical production, waste heat from process steam.

• Flow passage: Multi-stage reaction or impulse blades, the design has 2-4 more pressure stages.
• Condensing system: Surface condenser (copper or titanium tubes), ejector (maintaining vacuum), circulating water pump.
• Seal system: Prevents air leakage or steam escape, using labyrinth seal or carbon ring seal.
• Recuperative extraction: Extracting steam from different stages of the cylinder to heat the feedwater, thereby increasing the cycle efficiency.

· product life: All components of the steam turbine adopt high-specification configurations to ensure safe operation of the unit. The designed service life of major components is not less than 30 years.
·Excellent hardware processing support and testing capabilities: With modern production workshops, and a complete range of testing equipment, we can guarantee the processing accuracy of various components.
·High operational flexibility: Through sliding pressure operation, it can be reduced to 20% of the rated load, adapting to the peak shaving demand of new energy power grids.

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.
 

Power generation equipment; turbine power generator 

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.