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

• Customization: Available
• After-sales Service: Global Service
• 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 Pressure: 0.88MPa
• Steam Inlet Temperature: 280ºC
• Steam Consumption: 6.5kg/Kw.H
• Steam Intake: 26ton/H
• Speed: 3000r/Min
• OEM, ODM: Available
• Transport Package: Sea and Land Transport
• Specification: Different specifications
• Trademark: Anhuizhengyufeng
• Origin: Anhuiwuhu
• Production Capacity: 100

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 parameter		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

Generator parameters

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 Turbine

A condensing steam turbine refers to a turbine where steam, after expanding and doing work inside the turbine, fully enters the condenser to condense into water, except for a small amount of shaft seal leakage.

Working Principle

After steam expands and performs work in the turbine, almost all of it (except for a small amount of shaft seal leakage) enters the condenser to condense into water. The exhaust steam of the turbine is cooled in the condenser, causing its volume to sharply shrink and form a vacuum. This reduces the exhaust pressure of the turbine, increases the ideal enthalpy drop of the steam, and thus improves the thermal efficiency of the power plant system.

Main Application Fields

Condensing steam turbines are the most common type used in power plants and marine systems:

 

• Thermal Power Plants: Typically integrated with boilers and generators to form power generation units, converting the chemical energy of fuel into electrical energy.
• Marine Applications: Used as propulsion power plants to provide thrust for ships.

 

Detailed Photos

 

Our Advantages

Our company custom-designs and independently develops high-efficiency condensing steam turbine units, which are multi-stage small enthalpy drop impulse steam turbines. Different from the condensing steam turbine rotors of other manufacturers, the design has 2-4 more pressure stages; the design reduces the distance between flow stages, allowing more stages to be arranged in the flow part. The enthalpy drop of each stage is reduced, the flow diameter is decreased, and the blade height loss is significantly reduced. The flow part of the condensing steam turbine also optimizes the profile design of blades, nozzles, and diaphragm nozzles, effectively reducing all losses in the flow part of the condensing steam turbine, thereby improving the mechanical conversion efficiency of the condensing steam turbine and having a wide load adaptation capacity and overload capacity. This technology was selected into the 2019 China Industrial Energy Conservation Technology and Equipment Recommendation Catalog and Cases issued by the Ministry of Industry and Information Technology of China.

Our company's main technical configuration is to optimize the blade profile of conventional units. Through thermal calculation and following the law of "conservation of energy", the design condition parameters of the original unit are matched and optimized with the actual operating conditions. Meanwhile, new partitions are matched. The purpose is to revise the flow area and improve the flow structure, so that the unit can do work effectively and smoothly, thereby achieving the goal of energy saving and efficiency improvement.

The high-efficiency labyrinth teeth steam seals independently designed by our company have the following characteristics:

1. The labyrinth teeth are lengthened and densified. Based on the original 36 teeth, the density is increased to 45 teeth, and the tooth height is also increased.
2. It has better sealing performance. Tests show that under the same steam seal clearance and pressure difference, the densified labyrinth seal reduces leakage losses by approximately 30%-50% compared to conventional labyrinth seals.
3. It improves the moisture removal capacity in the blade passages of the wet steam region, reducing water erosion on the last few stages of moving blades.
4. It enhances the vibration damping of the shaft, weakens shaft vibrations, and inhibits the formation of steam-induced vibrations.
5. It effectively reduces steam leakage, allowing steam to perform work more efficiently, thereby improving the operational efficiency and safety index of the unit.

Product Service Life
All components of the condensing 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, dozens of sets of advanced hardware processing equipment, and a complete range of testing equipment, we can guarantee the processing accuracy of various components. All products undergo strict testing and inspection before leaving the factory, and corresponding reports are issued.

FAQ

1. Q: How to determine the parameters of steam turbine?
    R: Design steam turbine units with different working conditions according to the customer's current production technical parameters to meet production needs.
2. Q: How to determine the quality of steam turbine?
    R: You can do it through on-site field visits and provide relevant inspection and testing reports and other materials.
3. Q:How to install the steam turbine?
    R: After the steam turbine arrive at your site, we will dispatch relevant technical personnel to your country for on-site installation and debugging.
4. Q: How to ensure after-sales service?
    R: The company's technical staff solves difficult problems online and offline. If needed, our company can our company can dispatch relevant technical personnels to your country for on-site installation and maintenance.