A cavitation-resistant steam blocking plate for the steam inlet of a high-pressure heater

Abstract

The invention discloses a cavitation-resistant vapor blocking plate for a vapor inlet of a high-pressure heater. The vapor blocking plate comprises a vapor blocking plate body, wherein first vapor through holes are formed in the middle of the vapor blocking plate body and are evenly distributed to form a circular shape; second vapor through holes are formed in the peripheral side of the circular shape; and the vapor blocking plate body is an arc-shaped surface. With the vapor blocking plate, shielding areas of upper and lower parts of the front side position are increased by the aid of a vapor inlet baffle, the probability of cavitation of a steel pipe due to the fact that high-pressure vapor directly blows the steel pipe of the high-pressure heater is reduced, and the steel pipe of the high-pressure heater is well protected; and meanwhile, gradually varied vapor inlet holes are distributed in the circumference of the vapor inlet baffle, the further the holes are away from the vapor inlet, the larger hole diameters are, the probability of cavitation of the steel pipe due to the fact that the high-pressure vapor directly blows the steel pipe of the high-pressure heater is reduced, normal heat exchange of the high-pressure heater is guaranteed, and the running safety and economy of the high-pressure heater are improved.

Description

technical field [0001] The invention belongs to the technical field of high-pressure heaters, and in particular relates to a cavitation-resistant steam blocking plate of a steam inlet of a high-pressure heater. Background technique [0002] The device of the high-pressure heater is composed of two parts: the shell and the piping system. The steam condensing section is set in the upper part of the inner cavity of the shell, and the drain cooling section is set in the lower part. The water inlet and outlet are set at the top of the water inlet and outlet pipes. When the superheated steam enters the casing from the inlet, it can heat the feed water in the upper main coil, and after the steam condenses into water, the condensed hot water can heat part of the feed water in the lower cooling coil, and the condensed water after being used is passed through The hydrophobic outlet flows out of the body. It has the obvious advantages of low energy consumption, compact structure, smal...

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Problems solved by technology

[0005] The object of the present invention is to provide a cavitation-resistant steam blocking plate for the steam inlet of a high-pressure heater. The shielding area is increased through the steam inlet baffle, and at the same time, gradually changing steam inlet holes are arranged around the steam inlet baffle to guide After the steam is diverted, it smoothly enters the interior of the high-pressure heater and contacts the steel pipe of the high-pressure heater for heat exchange, which solves the problem of large erosion and cavitation of the steel pipe at the inlet due to the relatively fast flow rate during the heating process of the existing high-pressure heater inlet steam question

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