Hybrid heating method adopting skirt membrane type spray pipe

Abstract

The invention discloses a hybrid heating method adopting a skirt membrane type spray pipe. A part for implementing the method comprises a porous pipe body, main spatial pores and auxiliary spatial pores, wherein the main spatial pores arranged at the upper part of a pipe body of the porous pipe body according to the spiral rotation direction form a main spatial pore group; the auxiliary spatial pores formed in the symmetrical positions at the lower part of the pipe body of the porous pipe body form an auxiliary spatial pore group; the opening orientation of each main spatial pore forming the main spatial pore group is spatial orientation. Steps for implementing the method are as follows: steam enters the porous pipe body from the outside and then is sprayed under the action of steam pressure through joint of the main spatial pore group in spiral arrangement and the auxiliary spatial pore group in symmetrical arrangement, so that a skirt membrane type steam curtain is formed in a space outside the porous pipe body; the skirt membrane type steam curtain is quickly subjected to phase change in the low temperature environments all around, and heat is quickly transferred out to drive hot water formed all around to flow in a vortex manner. The skirt membrane type spray pipe has the characteristics of reasonable structure, quickness and convenience in installation, easiness in processing, quickness in heat exchange between steam and water, good work environment, safety and reliability.

Description

technical field [0001] The invention relates to a mixed heating method of a skirt film nozzle, in particular suitable for direct mixed heating of steam and water in a water heating device for flushing water tanks of main and auxiliary equipment in a thermal power plant. Background technique [0002] In order to meet the requirement that the cleaning water temperature is between 70°C and 80°C and the noise is less than 85 decibels, the air preheater flushing water tanks used in most occasions are heated by steam, and the heating method is a mixed type. way to heat up. That is, the main pipe cooperates with the branch pipe steam to directly spray into the cold water for mixed heating. This method often results in uneven heating, high noise during the heating process of steam-water mixing, long heating process, and large heat loss. The above-mentioned defects greatly affect the cleaning effect and efficiency and cause energy waste. Contents of the invention [0003] The pre...

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Problems solved by technology

This method often results in uneven heating, high noise during the heating process, long heating process, and large heat loss. These defects greatly affect the cleaning effect and efficiency and cause energy waste.

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