Anti-washing mechanism for heat exchanger

Abstract

The invention discloses an anti-washing mechanism for a heat exchanger. The heat exchanger comprises a first barrel, a heat exchange tube, a feeding opening and a feeding tube; the heat exchange tube is arranged in the first barrel; the feeding opening is formed in a side wall of the first barrel and is used for feeding a heat exchange medium into the heat exchanger; and the feeding tube communicates with the feeding opening. The anti-washing mechanism comprises a second barrel and an anti-washing plate, wherein the second barrel penetrates in the feeding tube; one end of the second barrel is positioned in the first barrel; the anti-washing plate is arranged on the second barrel and is close to one end of the heat exchange tube; the anti-washing plate is recessed in the direction away from the shaft axis of the first barrel to form a concave-surface plate; and the heat exchange tube is positioned on a concave-surface side of the concave-surface plate. The anti-washing plate is the concave-surface plate, the stress surface of the concave-surface plate is redistributed along a concave surface, a direct acting force of fluid to the anti-washing plate is reduced, and a welded joint of the anti-washing plate is prevented from dropping; and by a plurality of first through holes and a plurality of second through holes, air flow uniformly enters the heat exchanger, the impact force to the anti-washing plate is reduced, erosion of large air flow to the heat exchange tube is avoided, the heat exchange tube is protected, and the heat exchange efficiency is improved.

Description

technical field [0001] The invention relates to an anti-shock mechanism for a heat exchanger. Background technique [0002] Heat exchangers are widely used in various fields of industry and agriculture. In oil refining and chemical plants, heat exchangers account for about 40% of the total equipment cost. At the fluid inlet of the shell side of the heat exchanger, in order to reduce the vibration and abrasion caused by the direct flushing of the heat exchange tube by the fluid, an anti-scouring plate is generally installed at the inlet of the shell side. The existing anti-shock plate generally adopts a flat structure, and is installed on the shell or on the tube bundle. [0003] The anti-shock plate adopts a flat structure. During operation, due to the high flow rate at the inlet, the stress is concentrated on the anti-shock plate. The effect of the heat pipe will seriously damage the heat exchange tube due to falling off and impact, causing the heat exchange tube to ruptu...

AI Technical Summary

Problems solved by technology

Under the same heat exchange area, a larger shell diameter is required, which increases the cost and heat exchanger layout space, and the fixedly installed anti-shock plate is not conducive to cleaning and maintenance, and it is not convenient to repair and replace after damage

Images