شیر پروانهای دو محوره
قطر اسمی：2"-200"(DN50-DN5000)
فشار اسمیکلاس ۱۵۰-کلاس ۲۵۰۰ (۱.۰ مگاپاسکال-۲۵۰ مگاپاسکال)
حداکثر دمای عملیاتی۴۲۵ درجه سانتیگراد
جنس پوسته： دبلیو سی بی，شورای جهانی کشتی (WCC)，A105，F304，اف۳۱۶，F316L，N06625，CF8، CF3، CF3M، CW6MC، CY40، M35-1اینکونل ۷۱۸，N10276，سیاف۸ام，مونل K500
استانداردهای طراحی:API 609، AWWA V504، GB/T 12238، EN 593، DIN 3354، JIS B2034
اتصال：بست، فلنج، جوشکاری
حالت رانندگی： دستی، برقی، پنوماتیک، هیدرولیک
شیر پروانهای دو محوره
تعریف محصول و ماموریت ایمنی:
JH double eccentric butterfly valve adopts a unique double eccentric structure design, through the double eccentric technology of the center bias of the valve shaft and the sealing surface and the center of the valve shaft and pipeline, to achieve the rapid detachment and fitting of the sealing surface during the opening and closing process. This double eccentric butterfly valve is specially developed for medium and high pressure working conditions, perfectly balancing performance and economic benefits, and is widely used in water, HVAC, chemical and other fields, to solve the problems of high wear and easy leakage of traditional midline butterfly valves.
JH Double Eccentric Butterfly Technology Core
- Optimized double eccentric structure: 90% reduction in opening friction (API 609 standard)
- Multifunctional sealing system: supports soft and metal seals (ISO 5208)
- Full coverage of pressure grades: Class150~Class600 (ASME B16.34)
- Variety of drive modes: manual/pneumatic/electric integrated design (ISO 5211)
- تحلیل تکنیکال محصول
- نوع آب بندی
- Flow Channel Design
عملکرد برترِ JH Double Eccentric Butterfly Valve stems from its innovative double eccentric technology: Optimized eccentricity design, through precisely calculated eccentricity, ensures rapid disengagement of the sealing surface during opening and closing, reducing friction by 90%; the bidirectional sealing structure employs a symmetrical seat design, achieving ANSI Class VI zero-leakage sealing in both inlet and outlet directions; the modular sealing system supports rapid replacement of various sealing materials, with maintenance time ≤30 minutes; and the streamlined valve plate, optimized through computational fluid dynamics, significantly improves the flow coefficient. This comprehensive technological system enables the double eccentric butterfly valve to exhibit outstanding performance and reliability in various operating conditions.
Meets the requirements of different media and temperature conditions, ensuring sealing under all operating conditions, with a dual-eccentric diversified sealing solution.
فرآیندهای اصلی:
▌ Soft Sealing Series → EPDM/NBR/PTFE Materials | Applicable Temperature -40℃~200℃
▌Metal hard seal → Stainless steel hard seal | Temperature resistance up to 650℃
▌Fireproof Safety Sealing → API 607 Certification | Fire Safety Assurance
▌Special media sealing → Special rubber materials | Corrosion and wear resistant
Specialized optimization for fluid performance, ensuring high efficiency and energy saving, double eccentric flow resistance optimization solution.
فرآیندهای اصلی:
▌ Streamlined valve plate → CFD optimized design | Flow coefficient improved by 30%
▌ Full Bore Series → Equal Bore Flow Channel Design | Pressure Loss Reduced by 40%
▌ Energy-saving design → Low flow resistance structure | System energy consumption reduced by 25%
▌ Anti-cavitation design → Multi-stage pressure reduction structure | Effectively prevents cavitation cavitation
طراحی هسته و مزایا
- Low-friction, long-life seal: This Double Eccentric Butterfly Valve features an optimized eccentricity design → reducing friction by 90% | Service life ≥ 50,000 cycles
- عملکرد آب بندی دو طرفه: This double eccentric butterfly valve is equipped with a symmetrical seat structure → two-way zero-leakage seal | ISO 5208 certified.
- Multiple Sealing Options: The JHDouble Eccentric Butterfly Valve supports a variety of sealing materials → Operating temperature -40℃ to 650℃ | Meeting the needs of different operating conditions.
- Versatile Drive Options: This double eccentric butterfly valve can be equipped with various drive devices → Output torque 50~5000 N·m | Adapting to different control needs
- Flow Resistance Optimization Design: This Double Eccentric Butterfly Valve features a streamlined valve plate → 30% increase in flow coefficient | Significantly reduced system energy consumption.
- تعمیر و نگهداری آسان: This double eccentric butterfly valve adopts a modular design → seal replacement ≤30 minutes | significantly reducing maintenance costs.
سایر محصولات
سوالات متداول-شیر پروانهای دو محوره
Double Eccentric Butterfly Valves are particularly suitable for applications requiring frequent operation and long service life. They are commonly used in water supply systems, wastewater treatment, power plant circulating water, and petrochemical industries where higher sealing performance and longer service life are required in medium-high pressure applications.
Double Eccentric Butterfly Valves offer the following significant advantages:
Reduced Friction: Disc quickly disengages from seat during opening, minimizing wear
Longer Life: Significantly reduced seal surface wear extends service life
Lower Torque: Operating torque reduced by approximately 30% compared to centerline valves
آببندی بهتر: Achieves tight sealing with low leakage rates when closed
Higher Pressure Resistance: Suitable for higher working pressure ratings
پارامترهای کلیدی زیر نیاز به تأیید در طول انتخاب دارند:
دمای فشار: محدوده فشار طراحی و دمای عملیاتی
ویژگیهای متوسط: Medium corrosiveness, particulate content, viscosity
نوع اتصال: Wafer type, lug type or flanged type
جنس بدنه: Carbon steel, stainless steel, duplex steel, etc.
مواد آب بندی: Stainless steel seat with soft seal or metal hard seal
توجه ویژه در هنگام نصب شامل موارد زیر است:
علامت گذاری جهت جریان: Install strictly according to medium flow direction indicated on valve body
Eccentric Direction: Ensure correct valve installation orientation
فضای عملیاتی: فضای کافی برای کارکرد و نگهداری شیرآلات در نظر بگیرید
محافظت در برابر تمیز کردن: Remove pipeline impurities before installation
دقت ترازبندی: از تراز دقیق بین فلنجهای خط لوله و شیر اطمینان حاصل کنید
ما عملکرد آببندی را از طریق اقدامات متعدد تضمین میکنیم:
Precision Eccentric Design: Precisely calculated eccentricity ensures optimal sealing effect
Quality Sealing Materials: Select most suitable sealing materials based on working conditions
ماشینکاری دقیق: CNC machining of disc and seat ensures accuracy
آزمایش دقیق: Each valve undergoes rigorous performance testing
Our Double Eccentric Butterfly Valves support a complete certification system including CE, ISO 9001, API 609, ABS (American Bureau of Shipping), BV (Bureau Veritas), CCS (China Classification Society), and fire safety certifications.
دلایل احتمالی عبارتند از:
Medium Crystallization: Medium crystallizing or solidifying around valve stem area
Bearing Damage: Wear or damage to valve stem support bearings
آب بندی کاملاً محکم: Excessive tightness between seat and disc
External Factors: Actuator malfunction or pipeline stress
We provide comprehensive customization services and can customize special materials, special sealing structures, sour service versions, cryogenic versions, and various special driving devices according to customer requirements, meeting personalized needs for different working conditions.