API607 שסתום כדורי אקסצנטרי גיר תולעת, שסתום כדורי אקסצנטרי עליון
Worm Gear Eccentric Ball Valve; Top-Entry Eccentric Ball Valve Design Standards:
Design and manufacturing standards conform to: GB12237—1989, ASME B16.34, API 6D General Purpose Valve Flanges and Butt-Welded Steel Ball Valves
Structural length conforms to: GB12221, ASME B16.10;
Connection end dimensions conform to: JB/T79, GB9113, HG20592; ASME.B-16.5A, ASME B16.25;
Inspection and testing conform to: JB/T 9092, GB/T13927-1992, ממשק API 598; General Purpose Valve Pressure Test
Fire protection design conforms to: ממשק API 607;
API607 שסתום כדורי אקסצנטרי גיר תולעת, שסתום כדורי אקסצנטרי עליון
Worm gear eccentric ball valves are categorized by application into six major series: general-purpose valves, pipeline valves, slurry-specific valves, gas-specific valves, petrochemical-specific valves, and pulverized coal injection-specific valves. They are available in manual, פּנֵאוֹמָטִי, and electric operation, with eight pressure ratings (PN0.25～10.0Mpa) and hundreds of specifications (40～1000). These valves are a replacement for gate valves, שסתומי גלובוס, Y-type valves, and ball valves in the petroleum, כִּימִי, metallurgical, כּוֹחַ, and gas industries. Currently, they are widely used in pulverized coal injection in the steel industry, slurry, mother liquor, and alumina powder conveying in the alumina industry, hydraulic (or dry) ash removal in the power industry, and in the petrochemical and gas industries.
Worm Gear Eccentric Hemispherical Valve Applications of Top-Mounted Eccentric Hemispherical Valve
General Purpose Valve: מעוצב באופן סביר ומבנה קומפקטי, הוא כולל התנגדות זרימה נמוכה, ביצועי איטום טובים, ותפעול קל וגמיש. It is particularly suitable for low-pressure pipelines carrying media such as water, שְׁפָכִים, קִיטוֹר, ועיסה. זה יכול להיות מצויד במכשירים חשמליים או פנאומטיים לפעולה אוטומטית מרחוק. (עבור חומרים לא קורוזיביים כגון מים, קִיטוֹר, שְׁפָכִים, מוֹך, וסלרי)
Pulverized Coal Injection Valve: מכשיר אידיאלי לבקרת שינוע מוצק של גזים עמוסי אבק ונוזלים חלקיקים, כגון הזרקת פחם טחון. It is widely used in various pipeline controls in blast furnace pulverized coal injection, מערכות פירוק, ומערכות להסרת אבק במטלורגיות, עיבוד מינרלים, ותהליכי ייצור חשמל. הוא מאמץ מבנה ישר, הבטחת זרימה חלקה ומניעת הצטברות וחסימה של אפר. צמד האיטום עשוי מחומר סגסוגת Co-Cr-W ועובר טיפול חום מיוחד, מה שהופך את השסתום לעמיד בפני שחיקה ובלאי. למשטח הכדורי האקסצנטרי של השסתום יש ביצועי פיצוי אוטומטיים; על ידי התאמת הברגים בגלגל התולעת, זוג האיטום עדיין יכול להשיג אפקט איטום מחדש גם תחת רמה מסוימת של בלאי. (עבור גזים עמוסי אבק ונוזלים חלקיקים)
Worm Gear Eccentric Ball Valve, Top-Entry Eccentric Ball Valve Applications:
Petrochemical Industry Special: Designed for high-pressure, high-temperature media in the petrochemical industry, filled with flammable, explosive, and easily corrosive media such as weak acids and alkalis. Features include excellent sealing, corrosion resistance, easy opening and closing, and automatic removal of scale from the valve surface. Suitable for transporting crude oil, heavy oil, and other media, as well as in petroleum cracking, food processing, and other processes. (Petroleum, גז טבעי, גז פחם, מַיִם, וכו')
Blast Furnace Gas and Gas Special: The sealing pair is made of Cr-Mn-Si hard alloy, which is fire-resistant, explosion-proof, and anti-static. The sealing pair can withstand high temperatures up to 560℃. Its corrosion resistance and anti-galling ability are more than 6 times that of stainless steel sealing pairs. It is particularly suitable for use in pipeline transportation and pressurization stations for coal gas, coke oven gas, water gas, גז נוזלי, and natural gas. (Blast furnace gas, גז טבעי, dust-laden gas, וכו') For slurry mixed fluids: The ideal process valve for conveying two-phase mixed fluid media such as easily precipitated, scaled, or crystallized slurries, slurry ash, וכו. It can overcome scale obstacles to achieve smooth closure. It features a novel structure and unique design, offering advantages such as high efficiency and energy saving, good wear resistance, איטום אמין, easy operation, rapid opening and closing, and long service life. (Conveying process slurries, slurry ash, וכו. containing particulate matter) For pipelines: A straight-through hemispherical valve with no reduction in diameter. The valve body channel connects to the pipeline in a straight line with the same cross-sectional area, resulting in less resistance than a reduced diameter valve. Full opening and full closing can be achieved with just a 90-degree rotation, facilitating long-distance pipeline transportation control. (Pulverized coal injection and gas transportation)
The worm gear eccentric hemispherical valve, specifically the top-mounted eccentric hemispherical valve, offers the following advantages:
1. Compact side-mounted structure and lightweight, suitable for applications requiring limited installation space.
2. Low fluid resistance; its resistance coefficient is equal to that of a pipe section of the same length.
3. Simple structure, small size, and light weight.
4. Cutting function; it can cut off impurities (twigs, textile bags, וכו') in the medium when closed.
5. Tight and reliable; the sealing surface material of the ball valve widely uses plastics, providing excellent sealing performance, and it is also widely used in vacuum systems.
6. Convenient operation; rapid opening and closing; only a 90° rotation is needed from fully open to fully closed, facilitating remote control.
7. Easy maintenance; the ball valve has a simple structure, and the sealing rings are generally movable, making disassembly and replacement convenient.
8. When fully open or fully closed, משטחי האיטום של הכדור והמושב מבודדים מהמדיום, preventing erosion of the valve sealing surfaces during medium flow.
9. It has a wide range of applications, with pipe diameters ranging from a few millimeters to several meters, and can be used in applications ranging from high vacuum to high pressure. When the sphere rotates 90 מעלות, the entire inlet and outlet should present a spherical surface, thereby cutting off the flow.
