api機(jī)械密封沖洗方案-展示頁(yè)
2025-08-03 17:35本頁(yè)面
【正文】 as the barrier fluid temperature is less than 120176。169。 2022 John Crane EAA 1 API Piping Plans API 沖洗方案 November 2022 JC Tianjin Training Module Seal Environment 密封環(huán)境 API Piping Plans API 沖洗方案 Integral (internal) recirculation from pump discharge to seal Advantage No external piping Limitations Changing flow rate required dismantling of pump For clean pumpages only API Piping Plans API 沖洗方案 Points to Note for API Plan 02: The injection tapping is used for venting prior to start–up. API plan 02 is often used together with plan 62, especially on high temperature bellows seals. API Piping Plans API 沖洗方案 No flushing to the mechanical seal (?deadended?) Points to Note for API Plan 11: Use an orifice to restrict the flow rate if the discharge pressure is 3 bar higher than seal chamber pressure. Use on clean and low abrasives duties API Piping Plans API 沖洗方案 Seal Flushing ByPass from Discharge 單密封通過(guò)出口進(jìn)行沖洗 Recirculation from seal chamber through a flow control orifice and back to pump suction Points to Note for API Plan 13: Use an orifice to restrict the flow rate if the seal chamber pressure is 3 bar higher than suction pressure. handle abrasives duty better than API plan 11 higher seal chamber pressure to suppress vaporisation API Piping Plans API 沖洗方案 + = Points to Note for API Plan 14: Flow back to suction side will evacuate vapours that may collect in seal chamber. Remended for light hydrocarbon service. API Piping Plans API 沖洗方案 Recirculation from pump discharge through a flow control orifice and cooler to seal Open Loop Cooling Circuit Cooling Water Outlet Cooling Water Inlet API Piping Plans API 沖洗方案 Recirculation from a pumping ring in the seal chamber through cooler and back to seal Closed Loop Cooling Circuit Throat bushing Suction Discharge 18 24 Vent at highest point of the piping Cooling Water Outlet Cooling Water Inlet mechanical seal with pumping ring Heat exchanger API Piping Plans API 沖洗方案 Points to note for API Plan 23: ? Thermosyphon design * heat exchanger ? 18 to 24 above pump centre line. * Prevent overheating in standby and start–up. ? Install close fitting neck bushing at the bott
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