Pump casing is the main structural housing that contains and directs fluid flow in centrifugal and positive displacement pumps.
The pump casing, also known as pump housing, is the primary pressure-containing component in feed pumps that encloses the impeller, volute, and internal flow passages. It serves to convert kinetic energy into pressure energy, maintain structural integrity under operational stresses, and provide mounting interfaces for other pump components. In industrial feed pump applications, casings are engineered to withstand corrosive fluids, high pressures, and thermal cycling while maintaining precise dimensional stability.
诱因 → 失效模式 → 工程缓解
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Common failures include corrosion erosion, cracking from thermal stress, mechanical fatigue at mounting points, and wear from cavitation or abrasive particles in the fluid.
Material selection depends on fluid chemistry (pH, chlorides), temperature, pressure requirements, and compatibility with system materials. Stainless steel offers corrosion resistance, cast iron provides cost-effectiveness for non-corrosive applications, and special alloys handle extreme conditions.
Regular inspection for cracks, corrosion monitoring, pressure testing, cleaning of internal surfaces, and checking gasket surfaces for flatness. Ultrasonic thickness testing is recommended for corrosion monitoring.
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