Medium Temperature & Medium-Pressure Back-Pressure Type Steam Turbine Unit

• Customization: Available
• After-sales Service: Cheaper Spare Parts & Service
• Warranty: One Year
• Model NO.: B-M
• 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.

The backpressure/extraction backpressure type steam turbine has the relatively simple thermodynamic system, there is no phase change of steam turbine exhaust steam in the system and will trans to the next heat exchange process directly by pipeline, it is the core equipment in high-efficiency cogeneration projects. In other words, these two kinds of steam turbine generator unit are the device that uses the pressure difference between the boiler and the heat supply to do power generation. It has met the heat supply demand as the primary function, and power generation exists as an auxiliary energy-saving function.
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 type.

These two types of steam turbine are widely use in industries included paper mills, sugar mills, printing and dyeing mills, chemical industry, petrochemical industry, food stuff industry, etc. that need a lot of 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

Capacity: 1.5MW to 30MW

Inlet steam pressure: 2.35MPa-a to 4.9 MPa-a; Inlet steam temperature: 390 to 435Deg.C;

Back pressure: 0.294MPa-a to 1.57MPa-a 

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 ; 6500 or 5600/1500rpm (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: 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)
B1.5-2.35/0.49	1.5	20	2.35	390	0.49		13.33	6500/1500	Single
B1.5-3.43/0.981	1.5	21.3	3.43	435	0.981		14.2	6500/1500	Single
B1.5-4.9/0.981	1.5	17.85	4.9	470	0.981		11.9	6500/1500	Single
B3-2.35/0.294	3	30	2.35	390	0.294		10	3000	Double
B3-2.35/0.49	3	38.4	2.35	390	0.49		12.8	3000	Double
B3-3.43/0.49	3	29.4	3.43	435	0.49		9.8	6500/3000	Double
B3-3.43/0.981	3	41.7	3.43	435	0.981		13.9	6500/3000	Double
B6-3.43/0.49	6	57	3.43	435	0.49		9.5	3000	Double
B6-3.43/0.785	6	72.9	3.43	435	0.785		12.15	3000	Double
B6-3.43/0.981	6	82.6	3.43	435	0.981		13.77	3000	Double
B6-3.43/1.27	5.2	90	3.43	435	1.27	316.2	17.168	3000	Double
B6-3.43/1.57	6	126	3.43	435	1.57		21	3000	Double
B6-4.9/0.49	6	51.8	4.9	470	0.49		8.63	3000	Double
B6-4.9/0.981	6	66.66	4.9	475	0.981	289	11.11	3000	Double
B7.5-3.43/0.49	7.5	72	3.43	435	0.49		9.6	3000	Double
B7.5-3.43/0.785	7.5	90	3.43	435	0.785		12	3000	Double
B7.5-3.43/0.981	7.5	102	3.43	435	0.981		13.67	3000	Double
B7.5-4.9/0.49	7.6	60	4.9	470	0.49	206.1	7.819	6500/3000	Double
B7.5-4.9/0.785	7.5	77.25	4.9	435	0.785	227.7	9.9	3000	Double
B7.5-4.9/0.981	7.5	81.6	4.9	470	0.981		10.87	3000	Double
B9-4.9/0.49	9	71.1	4.9	470	0.49	223	7.9	3000	Double
B9-4.9/0.981	9	94.3	4.9	470	0.981	279	10.48	3000	Double
B10-3.43/0.294	10	75	3.43	435	0.294	166.8	7.433	3000	Double
B10-4.9/0.981	10	104.7	4.9	470	0.981	279	10.47	3000	Double
B12-3.43/0.981	12	161.6	3.43	435	0.981		13.47	3000	Double
B12-4.9/0.49	12	97.7	4.9	470	0.49		8.14	3000	Double
B12-4.9/0.785	12	117.4	4.9	470	0.785		9.78	3000	Double
B12-4.9/0.981	12	126	4.9	470	0.981	277	10.49	3000	Double
B12-4.9/1.27	12	145	4.9	470	1.27		12.08	3000	Double
B15-4.9/0.49	15	114	4.9	435	0.49	176.18	7.58	5300/3000	Double
B15-4.9/0.685	15	132	4.9	470	0.685		8.8	3000	Double
B15-4.9/0.785	15	141.15	4.9	470	0.785	253	9.41	3000	Double
B15-4.9/0.981	15	154.5	4.9	470	0.981	276	10.3	3000	Double
B18-4.9/0.981	18	183.6	4.9	470	0.981	274.1	10.2	3000	Double
B22-4.9/0.685	22		4.9		0.685			3000	Double
B25-4.9/0.686	25	221	4.9	435	0.686	207.6	8.838	3000	Double
B25-4.9/0.8	25		4.9		0.8			3000	Double
B25-4.9/0.98	25	256.3	4.9	470	0.98		10.25	3000	Double
B30-4.9/0.685	30		4.9	470	0.685			3000	Double
B30-4.9/0.98	30	305.4	4.9	470	0.98		10.18	3000	Double

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.