Эксцентриковые шаровые краны большого диаметра
Large-diameter eccentric ball valves are widely used in low and medium pressure pipelines in petroleum, химический, металлургический, власть, and water supply industries, primarily as shut-off valves. This product can be further divided into top-mounted eccentric ball valves and side-mounted eccentric ball valves. According to application, this product is divided into six major series: клапаны общего назначения, трубопроводная арматура, клапаны для суспензий, газовые клапаны, клапаны для нефтехимической промышленности, и клапаны для впрыска пылевидного угля. There are three actuation methods: руководство, пневматический, and electric, с восемью классами давления (PN0.25～10.0МПа) и сотни спецификаций (40~1000) of ball valve products. In the petroleum, химический, металлургический, власть, и газовая промышленность, it is a replacement product for gate valves, шаровые клапаны, Y-образные клапаны, and ball valves. В настоящее время, it is selling well in the steel industry for pulverized coal injection, the alumina industry for conveying slurry, маточный раствор, and alumina powder, the power industry for hydraulic (или сухой) ash removal, the petrochemical industry, and the gas industry, among other applications.
Large-Diameter Eccentric Hemispherical Valve Product Features
1. Full-bore structure with a hemispherical valve core, providing a large flow area, extremely low flow resistance, and significant energy savings. Simultaneously, the sealing surface is not directly eroded, resulting in a long service life.
2. Top-entry structure allows for online maintenance. In specific working conditions, emergency repairs can be performed without disrupting the normal operation of the pipeline system, minimizing the economic losses caused by valve repairs.
3. When opening, the ball crown gradually approaches the valve body sealing surface, effectively removing scale and debris for reliable sealing.
4. Double eccentric structure eliminates wear during opening and closing. During opening, the ball crown quickly disengages from the valve body sealing surface with a short friction distance; when closing, the ball crown rapidly enters the valve body sealing surface, tightening as it closes, minimizing wear.
5. With long-term use, after wear on the sealing pair, the valve seat can be adjusted to restore a good seal.
Product Applications
Used in low and medium pressure pipelines in petroleum, химический, металлургический, власть, and water supply industries, primarily as a shut-off valve.
Технические параметры
1. Номинальный диаметр: DN200-DN2200
2. Номинальное давление: 1.0MPa-4.0MPa
3. Средняя температура: 0℃～120℃
4. Применимые носители: Clean water, raw water, seawater, сточные воды, weak acids and alkalis, суспензии, liquids containing small solid particles, и т. д..
5. Структура: Top-loading
Схема конструкции эксцентрикового полусферического клапана
Eccentric hemispherical valve structure and dimensions
