LED industry overall warming small interval outbreak pregnancy machine

Since 2015, the overall growth rate of the LED industry has slowed down. In 2015, China's total LED output value was 396.7 billion yuan, a year-on-year growth rate of 15.15%, and the growth rate was only about half of the 30.59% in 2014. Since entering the second quarter of 2016, the LED industry has shown signs of recovery. The price reduction of LED bulb terminals has slowed down and prices have bottomed out. Since 2015, the overall growth rate of the LED industry has slowed down. In 2015, China's total LED output value was 396.7 billion yuan, a year-on-year growth rate of 15.15%, and the growth rate was only about half of the 30.59% in 2014. Since entering the second quarter of 2016, the LED industry has shown signs of recovery. The price reduction of LED bulb terminals has slowed down and prices have bottomed out. In 2013-2015, the average price of LED bulbs replacing 60W was 30.74%, 23.36%, and 11.59%, respectively. The average price of LED bulbs replacing 40W decreased by 19.25%, 17.88% and 14.52%. From the overall price trend, LED prices are gradually decreasing. At the bottom, the price decline has obviously tended to be flat. In June, the average retail price of LED bulbs replacing 40W incandescent lamps in the world fell by 0.2% to $9.5. The replacement of 60W incandescent LED bulbs, the average retail price dropped by 0.1% to $12.9. Affected by market demand, prices in the upstream chip and midstream packaging sectors have stopped falling, and the price of terminal lighting products has remained stable. When the conventional LED display is fiercely competitive, the appearance of small-pitch LEDs with huge lamp consumption increases the demand for LED lamp beads, which alleviates the supply and demand relationship of LEDs to some extent, and is expected to become the future industry development. The direction. Compared with the traditional large-screen display technology DLP splicing wall and LCD splicing wall, the small-pitch LED screen has advantages in seaming, brightness and resolution. In 2015, the market size of small-pitch LED display screens in China was 1.55 billion yuan, and the market penetration rate was 21.7%. By 2020, the market size of small-pitch LEDs is expected to reach 4.65 billion yuan, which is 2 times higher than that in 2015, and the penetration rate will reach 36.1. %. The trend of industry mergers and acquisitions will continue to increase with the downward pressure on the macro economy. Traditional electronic manufacturing enterprises are facing increasing and increasing transformation pressure. According to the data, the electronics industry ranks in the industry by industry. Second, the market is showing a booming frequency of mergers and acquisitions, high capital intensity, and full coverage of the field. The current LED industry boom and the overcapacity of the industry, the industry competition is increasingly fierce, from the initial barbaric growth of incremental competition to the stock competition, LED shows that the company's living space is threatened, in a tough industry Under the pressure of competition, the advantages of mergers and acquisitions began to become more prominent. Enterprises tried to increase the market share of products through mergers and acquisitions, or seek new profit growth points through industrial integration, and continuously improve the level of research and development to enter new applications and open new blue oceans. market. In 2016, the acquisition, merger and integration of the LED industry will intensify.

Service Scope: Steam Turbine spare parts supply; steam turbine installation, inspection & overhaul, technological upgrading, turbine technology training, turbine low oil pressure renovation, turbine rotor shaft bend restoration, lower turbine`s vibration and noise, remove speed governing system abnormal volatility or load swing, solve turbine insufficient output, discontent load or other common/exceptional faults.


  Contract to overhaul and all kinds of turbine`s remould, turbine dynamic balance and so on, for satisfying practical operation requirements.


   Provide technical support and service for operation, inspection, maintenance, accident treatment and so on.


1. Steam Turbine Maintenance/Overhaul Service

 

   Steam turbine normal overhaul, failure treatment; main body components repair, heat exchange tubes of cooler replacement and so on.


2. Technical guidance


   Generating or Industrial driving turbine inspection, overhaul, upgrading and other items technical guidance.


3. Thermodynamic System Optimizing Services


   For operating or planning projects or equipment, according to end users` actual CHP(or heat-work cooling) requirements, make cycle efficiency analysis, provide system optimizing service.


4. Speed Governing System Remould

 

   Upgrade old hydraulic governing system to digital electro-hydraulic governing system, satisfy flexi-ble configuration all kinds of control strategy requirement.

5. Flow Passage Optimization and Modification


Total modification for steam turbine shall increase old turbine`s economic efficiency with advanced technology, service life also shall be extension.


6. Turbine Parameters Remold and Modification


Apply to processing or procedure transformation (or project site change) cause turbine operation parameters` change.


7. Uncontrolled extraction steam reconstruction


Consideration of turbine security and economic, open a hole for extraction steam normally in order to heat supply reformation.


8. Steam Turbine Engineering Service


Provide small & middle size Steam Turbine Generator or industrial steam turbine complete set engineering, project design and project installation service.


9. Vibration Analysis and Rotor Dynamic Balance

24Hours Service for emergency vibration analysis and wide range rotor dynamic balance service at project site or back to factory.


10. Condensing (extraction condensing) type remodel to back pressure type


Condensing (extraction condensing) steam turbine remodel to Back Pressure Steam Turbine


11. Steam Turbine Vacuum System Upgrade


Condenser three-dimension design and upgrade, reduce heat-transfer temperature difference, increase steam exhaust vacuum degree, improve turbine economic efficiency. Water cooling remodel to air cooling.


12. Steam Turbine Enlargement Capacity Reconstruction


Reconstruct the turbine`s capacity which are caused by system or equipment changing.


13. Motor Speed Governing Variable-frequency Remould

 

 Variable-frequency drive remould for pump systems of all kinds of industrial and mining enterprises.


14. Domestic Equipment Reconstruction


Domestic equipment reconstruction for imported turbine


15. Circulating Cooling Water System Optimization and Modification


Optimization and modification of operating circulating cooling water system, reduce operation energy consumption rate.


16. Waste Heat Steam Turbine Gland Seal System Upgrade


After upgrade, steam leakage ( effect gear box oil quality) shall be improved by the reason of waste heat parameters are not stable.


17. Spare Parts Marketing


Normal easily damaged parts warehouse, shorten delivery time.

Case 1


   A fertilizer company has 2 sets of steam turbine, model are: CB6-3.43/1.27/0.294 and CB6-3.43/1.17/0.294. Because end user`s power load and steam consumption are changed, the turbines must be reconstructed according to steam parameters, flow change and guarantee high efficiency.


   Remould Parameters: turbine max. inlet steam is 100t/h, when inlet steam is 97t/h and inlet pressure is 3.15MPa(g), its extraction steam is 62t/h extraction pressure is 1.51MPa(g), exhaust pressure is 0.21MPa(g), guarantee output is 5800KW (deviation±5% ).


   Main job of remould and overhaul:


   1. Casing was sent back to manufacture`s factory for rebuilding 2 valve seat hole, expand nozzle block steam passage.


   2. Change nozzle block, take out guide blade carrier.


   3. The original double row governing stage impeller and blade was changed to single row governing stage impeller and blade, add governing stage sheath, parts of rotor sleeve need to be changed and adjusted.


   4. LP stage 3rd diaphragm steam passage inspection optimization.


   5. Casing and rotor dismounting and assembling in factory with comprehensive inspection.


   6. Rotor low speed dynamic balance test.


   7. Governor static test in factory, overspeed test.


   8. Dismount & assembly, overhaul at project site.


   9. Clear incrustation for steam governing valve, nozzle and blade.


   10. Gland seal inspection and replacement, gland sealing clearance adjustment, change the seal block which was severe wear, spring leaf which are damaged should be changed.


   11. Every bearing repair and adjust.


   12. HP & LP governing steam valve grinding, stroke adjustment.


   13. Front bearing pedestal dismounting and inspection, patch oil leaking points.


   14. Inspection and patching steam leaking of HP steam governing valve link rod.


   15. Turbine mainbody troubleshooting.

   After remolding is complete, the 2 turbine sets are running very well.

Case 2

There is a paper mill which has a set of steam turbine: B6-3.43/0.981. Due to processing consumption in workshop and load were changed, the end user request reset new back pressure and achieve the best efficiency within the shortest time.


   Parameters reform to: when rated inlet flow: 55t/h, inlet pressure: 3.43±0.2MPa(a), exhaust pressure: 0.59MPa(a), steam rate guarantee value must be 11.65kg/(kw·h), output power must be 4700KW under rated working condition. The reconstruction project is a turnkey project, from preparing components to dismount heat material, equipment dismounting and installation, till to equipment commissioning successfully.


   For reducing the work amount, keep casing and pipelines still, main jobs are following:


   1. Change front & rear gland seal and diaphragm seal.


   2. Change main shaft assembling (keep mail oil pump and coupling still).


   3. Change HP nozzle block, HP guide blade carrier and original 2 stage diaphragm, add 3 stage diaphragm, 5 stage diaphragm adopts special design for satisfy the requirement.


   4. Change the original 3 stage impeller and add another 3 stage impeller.


   5. Steam governing valve link rod adjust inlet steam, check all butterfly valves matching conditions, improper ones should be changed.


   6. Original rotor`s coupling, MOP shall be mounted in new rotor.


   7. Rotor balance.


   8. Change sylphon of governing system.


   9. Change pressure transducer sleeve, adjust hydraulic servo-motor stroke.


   10. Governor static test in factory.


   11. Clear oil system.


  The reconstructed steam turbine is B4.7-3.43/0.59, end user evaluates steam rate, vibration, exhaust temperature very strictly, but the reconstructed steam turbine is running very well and fully meet the design performance.

Steam Turbine Care

Steam Turbine Care,Steam Turbine Services

Shandong Qingneng Power Co., Ltd. , https://www.qnpturbines.com

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