Non-Metallic Expansion Joint

신제품Non-Metallic Expansion Joint
제품코드	G025619
판매가격	가격협의
제품분류	동력전달기계/부품 > 카플링/조인트
제품사양	하단표기
모델명	INFORMATION ABOUT NON-METALLIC EXPANSION JOINT
제조사	에이치케이알
판매지역	전국
거래방식	직거래
제조년도	2013 년
A/S여부	가능
설치 및 시운전	가능
세금계산서	가능
제조국가	-

제품 QR코드

등록자정보

회사명	(주)에이치케이알	담당자	에이치케이알
전화번호	031-665-2111	휴대전화	***
이메일	webmaster@uet-hkr.co.kr	홈페이지	http://www.hkr.co.kr/
주소	경기도 평택시 모곡동 447-2	제품홍보관	http://blog.yeogie.com/hkr2111

제품상세정보

INFORMATION ABOUT NON-METALLIC EXPANSION JOINT

1) Definition of Product

The non-metallic expansion joint are flexible connectors designed to eliminate the thermal stress created by absorption of displacement from thermal changes in ducting systems. It also absorbs vibrations and compensates for minor installation errors in its ducting or equipment. They are fabricated from a wide variety of non-metallic materials, including synthetic elastomers, fabrics, insulation materials and fluoroplastics, depending on the designs.

2) Major Applications

The range of use for non-metallic expansion joints has widened since its introduction in the early sixties. The stricter environmental regulations have resulted in the development of more sophisticated duct systems, requiring non-metallic expansion joints to solve those problems caused by the thermal and mechanical stresses generated in these complex systems. Although the major user of the non-metallic joint continues to the power generation industry, the use of this product has expanded into virtually energy industry, which conveys gases. A partial list of those industries is as follows:

① Power generation   - Fossil Fired Plants   - Gas Turbine Plants   - Cogeneration Plants   - Nuclear Power Plants ② Pulp and Paper Plants ③ Refineries   - Petroleum industry.   - Chemical equipment

④ Steel Mills ⑤ Smelters ⑥ Cement Plant ⑦ Refuse Incineration ⑧ Marine ⑨ Food Processing ⑩ HVAC-Heating     Ventilating and Air Conditioning

APPLICATION FOR NON-METALLIC EXPANSION JOINT

1. Applications     Economizer to Air Heater Gas Recirculation to Boiler Air Heater to Precipitator    Recovery Boiler to Precipitator Turbo-Expander to CO Boiler CO Boiler to Precipitator.

Temperature : 700℉~900℉ for continuous operation, excursion to 1200℉ Media : Low pH Flue gas from the combustion of coal, oil or caustic black liquor.; Flue gas from regeneration process. Particulate : Transferred with heavy fly ash from coal combustion, salt cake from black liquid fuel or catalyst carryover from the FCCU unit at a Refinery. Insulation / Lagging : Do not lag over the expansion joint. Also, remove lagging back away from the flanges to allow radiant cooling. Pressure : Slightly negative for balance draft boilers, otherwise positive pressure as much as 40-50 inches water gage. Low pressure off the Turbo-Expander. Operating Conditions : Systems usually on line for 12 to 18 months. Refineries have longer durations between major outages. Only Power ‘peaking; plants will cycle more frequently. Movements : Ductwork/boilers generally have large expansions and require joint system with large lateral and compression capabilities.

2. Applications     Air Heater to Fossil Fried Boiler, Air Heater to Coal Mills

Temperature : 600℉ ~750℉ for continuous operation. Media : Clean ambient air pushed from the FD Fan and from the Primary Air Fan thru the Air-heater to the Boiler both directly and thru the mills Particulate : Clean Air Insulation / Lagging : Do not lag over the expansion joint. Also, remove lagging back away from the flanges to allow radiant cooling Pressure : Positive 5” water to as high 80” of water for positive pressure boilers. Operation : After start up movement is normal. Severe high pressure operating conditions may be experienced in the Primary Air Ducts of Positive Pressure Boilers. Movements : Moderate high temperatures will generate moderate compressive and movements when the unit is on line. Each change in direction in the ductwork will generate a resultant lateral offset.

3. Applications     Primary Air Fan to Air Heater, FD Fan Air to Air Heater, Primary Air to Recovery Boiler,    Ambient Air to Turbine, FD Fan Air to Recovery Boiler

Temperature : Ambient air, -20℉~120℉ Media : Ambient air Particulate : None Heat Insulation and Insulation : Heat insulation and insulation can be used on the outside of the product in the case of low operating temperatures. Pressure : Positive pressure, 40~50 inches water gauge of higher. Turbine air inlets are slight negative pressure. Outlet at fans may produce pressure pulsations and/or extreme turbulence. Operation : Operational conditions have little effect on the airside ducts. Cyclical conditions and dew point have little effect as well Movements : Joints at boilers subject to large movements. Fan outlet joint see little movement, primarily vibration.

4. Applications     Re-Heater to Chimney, Precipitator to Induced Draft Fan, Induced Draft Fan to Chimney,    Induced Draft Fan to Scrubber, Steam Generator to Stack, Precipitator to Chimney

Temperature : Continuous operation temperature, 350℉~500℉ Media : Flue gas from precipitator drawn by Induced Draft Fan; Scrubbed Flue gas from Re-Heater going to Chimney Turbine Exhaust Gas from Heat Recovery Steam Generator to Chimney. Particulate : Minimal before scrubber systems, negligible after scrubber systems. Insulation / Lagging : Temperatures allow lagging over the expansion joints without adverse effects. Pressure : -15”wg after precipitators and +15”wg after I.D fan. The ducts of scrubbers and steam generator ends are affected by the pressure -5~+5”wg. Operation : Although movements are not severe temperatures will approach dew point present potential corrosion problems. Movements : Moderate compressive and lateral movements expected depending on ductwork configuration and length. Fan Joint usually see minimal movements.

5. Applications     Scrubber to Re-Heater, Scrubber Bypass to Scrubber, Scrubber Bypass to Re-Heater, Scrubber Outlet to Re-Heater

Temperature : Continuous operation temperature 150℉ ~350℉ Media : Dry flue gas to scrubber or bypass pushed by induced Draft Fan ; Wet flue gas at scrubber inlet: Wet, scrubbed flue gas from Scrubber (flue gas desulfurization) going to Reheater. Particulate : Minimal before scrubber systems, negligible after scrubber systems. Insulation / Lagging : Temperatures allow lagging over the expansion joint without adverse effects. Pressure : Positive after the induced Draft Fan, as much as 15" wg. Slightly negative, -5”wg. To slightly positive, +5”wg after Scrubber depending on unit load and weather conditions. Operation : Although movements are not severe temperatures will approach dew point and present potential corrosion problems. Wet Scrubber Service is potentially highly corrosive. Movements : Small movements expected.

6. Applications     Diverter Bypass to Stack, Diverter Exhaust to HRSG, Turbine Exhaust to Diverter Inlet, Turbine Outlet Stack

Temperature : Continuous operation temperature, 1000℉~1200℉, excursion to 1350℉. Media : Turbine Exhaust Gas from combustion of natural gas or fuel oil. Dry and non-corrosive. Particulate : None. Insulation / Lagging : Do not lag over the expansion joint. Also remove lagging back away from the flanges to allow radiant cooling. Pressure : Constant positive pressure generally no higher than 15 to 20 inches water guage. Operation : Systems with heat recovery are usually on line for 12 to 18 months. Power ‘peaking’ plants may cycle frequently as much as once per day Movements : Ductwork/ equipment expansions are large due to the temperature. Generally, lateral movements are small due to short, direct ductwork runs.

CONNECTION METHOD OF THE PRODUCT TO DUCT

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