Condensing Type Steam Turbine Unit

• Customization: Available
• After-sales Service: Cheaper Spare Parts & Service
• Warranty: One Year
• Model NO.: N
• Generator Type: Synchronous Generator
• Output Type: AC Three Phase
• Standard: Standard
• Transport Package: Steal Pallet
• Specification: As specifications
• Trademark: Huayang
• Origin: Zibo
• HS Code: 8406820000
• Production Capacity: 60 to 100 Set Per Year

Product Description

RODUCT DESCRIPTION

Steam turbine is a kind of power equipment that converts steam heat energy into rotary mechanical energy. It is most commonly used to drive generators to generate electricity and can also replace electric motors to directly drive pumps, fans, compressors and other shaft rotating equipment.

According to the thermodynamic system, steam turbines are mainly divided into backpressure type, condensing type, extraction condensing type, extraction backpressure type, etc.
According to the rating of inlet steam parameter, the steam turbine also canbe divided into hi-temperature & hi-pressure or hi-temperature & ultra-high pressure type, medium temperature & medium-pressure type, low parameter inlet steam type.
The condensing type steam turbine has a relatively complex thermodynamic system, there is a phase change by steam condensing to water, and then constitute a complete Rankine cycle with boiler system.
The condensing type steam turbine is widely use in industries included cement mills, steel mills, printing and dyeing mills, chemical industry, petrochemical industry, refuse incinerating power plant, waste heat power plant, power plant, etc. that need large amount electricity consumption or output and without heat energy consumption.

OUR TECHNICAL ADVANTAGE

High Efficiency Ratio - The steam turbine mostly designed to multi-stage small enthalpy drop impulse type, generally have 2 to 4 stages more than traditional design models: this design arranged more stage and reduced the distance between each flow stage by adjusting the distribution of enthalpy drop, by decreased impeller diameter and increased blade height in each stage of steam turbine to reduce the interstage losses; also optimized the design of the blades, nozzles, and diaphragm nozzles profile, effectively reducing the frictional heat loss of the steam turbine, thereby improving the thermal-mechanical conversion efficiency (internal efficiency) of the steam turbine. The actual operating steam consumption rate is relatively lower, and the internal efficiency is at least 5-10% higher than traditional design models.

Wide Governing Range - The governing stage of steam turbine adopted a step-by-step regulation method to make the inlet regulation range of steam turbine more widely, and more suitable for variable operating conditions and overload operation of steam turbine.

Lower Vibration Value and Noise Level - The final rotor assembly of the steam turbine is a rigid solidly forged with CNC precision machining rotor. Compared with traditional flexible assembly rotors, the operating vibration value & failure rate of our products are significantly lower than other manufacturers' traditional models. The vibration value of the bearing pads of our units that have been put into operation are all within 0.02mm, and noise under 80dB by 1 meter distance away from the unit.

Less Steam Leakage- The steam chest & casings of the steam turbine are integrally cast and formed, the structure optimized design as horizontal split overall spherical structure is more reasonable and compact, with uniform thermal expansion and less deformation that cannot cause steam leakage on the horizontal split of the casings; The shaft gland seal system adopts axial flow labyrinth type with expansion compensation device, combined with the patented design of a reverse pressure steam seal compensation device, which has advantage of low friction on the main shaft, and steam leakage during operation have reducted more than 50% compared to traditional models, it greatly improving the safety and economy of unit operation.

More Safety & Sensitive For Governing System - Digital Electro-hydraulic Control governing (DEH) and emergency trip system (ETS) adopted separate high-pressure wear-resistant (flame resistant) oil supply system (EH), it has the characteristics of sensitive response, good stability, and low failure rate. Compared to regulation and crisis security system with low-pressure lube-oil supply, the actuator has high pulling force with high adjustment accuracy and is not easy to jamming, ETS has fast emergency trip response speed, this application eliminates the hidden failures of control hydraulic oil system caused by water emulsification and deterioration in the shared lubricating oil system.

Quickly Start-up - The high-temperature high-pressure and high-temperature ultra-high-pressure units adopt casing sleeve design of high-pressure inner casing and outer casing, this application can adapt thermal expansion of casing under startup, shutdown, and variable operating conditions, so the warm-up speed of the unit is fast, and the startup time can be reduced by more than one-third compared to traditional single casing models, greatly reducing the steam consumption during the startup of the steam turbine, thus reducing the operating cost of the unit.

Low cost of construction and operation - Due to compact structure, modular design, and small volume weight, the unit also has advantage of convenient installation and maintenance with low cost on construction & operation.
 

TECHNICAL FEATURES

Hi-temperature & Hi-pressure/ Hi-temperature & Ultra-high Pressure Type
Capacity: 7.5MW to 50MW

Inlet steam pressure: 8.83MPa-a to 13.24MPa-a; Inlet steam temperature: 510 to 535Deg.C; 

Pressure of Condenser: .0075MPa-a to 0.005MPa-a (Water cooling); 0.02MPa-a to 0.01MPa-a (Air cooling) 

Supporting Steam Boiler Parameters: 9.8MPa-a to 13.7MPa-a; 510 to 540Deg.C
Double Sleeve Cylinder Design: High-pressure inner cylinder mounted in outer cylinder

Construction: Single flow, multi-stage solid rotor, horizontal spindle, two bearings

Rated Rotating Speed: 3000rpm direct coupling to generator ; 6500 or 6000/3000rpm (Special specifications)

Vibration VALUE: rated speed≤0.03mm ; critical speed≤0.15mm

Governing System (DEH+EH): Speed swing value: ≤15rpm; Speed governing droop: 4.5±0.5%; Speed regulation delay rate: ≤0.5%; Droop of exhaust pressure: 10%; Exhaust pressure delay rate: ≤2%

Emergency Trip (ETS): Overspeed: Overspeed:

Overspeed: 110% ~112% of rated speed@mechanical, 105% ~106% of rated speed@electrical; Axial displacement: alarm@±0.8mm,trip@±1.0mm; Low pressure of lube-oil: [email protected], AC oil pump start@ 0.05Mpa-g, DC oil pump [email protected], [email protected], Electric turning gear [email protected]; High-temperature of bearing: metal: alarm@90°C, trip@105°C/return oil: alarm@65°C, trip@75°C; Cylinder expansion diff.: alarm@-1mm & 3.5mm; [email protected] & 4.0mm

TYPICAL TECHNICAL PARAMETER FOR REFERENCE
MODEL	CAPACITY (MW)	INLET STEAM PARAMETERS			EXHAUST STEAM PARAMETERS		STEAM  RATE (kg/kW·h)	SPEED (rpm)	LAYOUT	REMARKS
		FLOW (t/h)	PRESS. (Mpa)	TEMP. (ºC)	PRESS. (Mpa)	TEMP. (ºC)
N7.5-6.4	7.5	30.5	6.4	480	0.01	45.8	4.06	6000/3000	Double	Temp. of boiler feed  water 104ºC
N15-8.83	15	52	8.83	535	0.0075	41	3.63	6000/3000	Double	Fixed Extraction Steam  0.785Mpa;5t/h
N25-8.83	25	89.5	8.83	535	0.006	36.16	3.58	6500/3000	Double	Temp. of boiler feed  water 210ºC
N30-8.83	30	113	8.83	535	0.0055	34.6	3.7667	3000	Double	Temp. of boiler feed  water 215ºC
N40-8.83	40	150.5	8.83	535	0.0055	34.6	3.76	3000	Double	Temp. of boiler feed  water 215ºC
N50-8.83	50	187.6	8.83	535	0.0055	34.6	3.752	3000	Double	Temp. of boiler feed  water 215ºC

Medium Temperature & Medium Pressure Type
Capacity: 3MW to 20MW  
Inlet steam pressure:2.35MPa-a to 4.9 MPa-a; Inlet steam temperature: 390 to 435Deg.C    
Pressure of Condenser: 0.008MPa-a to 0.0068MPa-a (Water cooling); 0.012MPa-a to 0.02MPa-a (Air cooling)    
Supporting Steam Boiler Parameters:  2.5MPa-a to 5.4MPa-a; 400 to 450Deg.C    
Construction: Single flow, multi-stage solid rotor, horizontal spindle, two bearings  
Rated Rotating Speed: 3000rpm direct coupling to generator ; 5600/3000rpm (Special specifications)  
Vibration Value: rated speed≤0.03mm ; critical speed≤0.15mm  
Governing System (DEH+EH): Speed swing value: ≤15rpm; Speed governing droop: 4.5±0.5%; Speed regulation delay rate: ≤0.5%; Droop of exhaust pressure: 10%; Exhaust pressure delay rate: ≤2%  
Emergency Trip (ETS):  Overspeed: 110% ~112% of rated speed@mechanical, 105% ~106% of rated speed@electrical; Axial displacement trip@±0.7mm; Low pressure of lube-oil: [email protected], Oil pump start@ 0.04Mpa-g, [email protected], Electric turning gear [email protected]; High-temperature of bearing: metal: alarm@85°C, trip@100°C/ return oil: alarm@65°C, trip@70°C

TYPICAL TECHNICAL PARAMETER FOR REFERENCE
MODEL	CAPACITY (MW)	INLET STEAM PARAMETERS			EXHAUST STEAM PARAMETERS		STEAM  RATE (kg/kW·h)	SPEED (rpm)	LAYOUT	REMARKS
		FLOW (t/h)	PRESS. (Mpa)	TEMP. (ºC)	PRESS. (Mpa)	TEMP. (ºC)
N4-4.3	4	20	4.3	410	0.008	41.53	5	5600/3000	Single
N4.5-3.43	4.5	20.5	3.43	435	0.0068	39	4.56	3000	Double	Temp. of boiler feed water 104ºC
N6-2.35	5.6	30	2.35	305	0.008	41.53	5.36	3000	Double
N6-3.43	6	27.6	3.43	435	0.0076	40.56	4.6	3000	Double	Temp. of boiler feed water 150ºC
N9-2.35	9	39.15	2.35	435	0.005	32.88	4.35	3000	Double
N10-2.4	10	56	2.4	310	0.02	60.1	5.544	3000	Double	Air cooling condenser
N12-3.43	11.6	50	3.43	435	0.015	54	4.295	3000	Double	Air cooling condenser
N15-3.43	15	61.5	3.43	435	0.005	32.88	4.1	5500	Double
N15-4.9	15	59.25	4.9	470	0.0068	39	3.95	3000	Double	Temp. of boiler feed water 150ºC
N20-3.43	15		3.43	435	0.013	51		3000	Double	Air cooling condenser

LOW PARAMETER INLET STEAM TYPE

TYPICAL TECHNICAL PARAMETER FOR REFERENCE - Condensing Type
MODEL	CAPACITY (MW)	INLET STEAM PARAMETERS			EXHAUST STEAM PARAMETERS		STEAM RATE (kg/kW·h)	SPEED (rpm)	LAYOUT	REMARKS
		FLOW (t/h)	PRESS. (Mpa)	TEMP. (ºC)	PRESS. (Mpa)	TEMP. (ºC)
N1.2-0.155	1.2	11.71	0.155	195	0.007	39	9.76	3000	Single	Axial exhaust
N3-0.6	2.75	25	0.6	158.8	0.007	39	8.83	3000	Double	Saturated steam
N3.3-0.12	3.3	40.22	0.12	104.8	0.007	39	12.18	3000	Double
N4-0.88	4	26	0.88	280	0.008	41.5	5.6	3000	Double
N4.5-0.981	4.5	25.4	0.981	300	0.007	39	6.5	3000	Double
N5-0.15	5	58.88	0.15	111	0.008	41.5	11.776	3000	Single	Axial exhaust
N7.5-0.98	7.5	43.2	0.98	280	0.006	36.16	5.75	3000	Double
N18-1.1	18	125	1.1	200	0.0078	41.05	6.94	3000	Double
N18-1.1	18	115	1.1	320	0.015	54	6.38	3000	Double	Air cooling condenser

FACTORY ABILITY

WORKSHOP

MECHINING EQUIPMENT

ASSEMBLY AREA

HEAT TREATMENT PROCESS

ANALYSIS LABROTRY

ROTOR DYNAMIC BALANCE

FAQ
1. The he Model Select of steam turbine should according to the requirement of actual process and working condition, overload operating and low parameter running will affect the efficiency of steam turbine greatly;
2. Our port of loading is Qingdao seaport, P.R.China;

3. Our delivery time is from 5 to 7 months after we get the 30% deposit payment;

4. Our product warranty time is one year from delivery time;

5. Our common payment term is 30% of contract amount by T/T advanced as deposit, balance 70% before shipment by T/T or L/C at sight;

6. If your need the certificate that issue by a third party, please let us know;
7. We can provide field guide service during installation and debugging, but the user should pay the cost against international practice.