Diagonal flow plate type direct air-cooling condensation water energy dissipation device

Abstract

The invention discloses an oblique-flow plate type direct air-cooling condensate water energy dissipating device. The oblique-flow plate type direct air-cooling condensate water energy dissipating device comprises an energy dissipating cylinder, an upper opening of the cylinder is communicated with an original upper stream pipeline of condensate water, a lower opening of the cylinder is communicated with an original downstream pipeline of the condensate water, a plurality of obliquely arranged flow guiding plates capable of lowering a flow speed of a steam-water mixture are arranged on the inner wall of the cylinder in a staggered manner from top to bottom, a plurality of holes are formed in the flow guiding plates, gas exchange passages are internally arranged on two sides of the cylinder, and a condensate water flow equalizing plate is arranged at an outlet of the cylinder. By means of flow guiding, throttling principles of the oblique-flow multi-hole plates and adopting the plates in multiple stages, potential energy generated in the process that the condensate water falls can be gradually dissipated, and air guiding holes are formed, so that isolated air can flow upwards to be exchanged and prevented from forming air lock when the steam-water mixture falls down. By using the oblique-flow plate type direct air-cooling condensate water energy dissipating device, the problem that pipeline vibration and fracture are caused by normal operation of large-fall steam-water mixture is solved, and equipment or a system is operated reliably.

Description

Technical field [0001] The invention relates to an oblique flow plate type direct air condensing water energy dissipation device, which is used to eliminate the fluid potential energy of a direct air cooling unit condensate drop pipeline or other large drop steam-water mixing pipelines. Background technique [0002] The direct air-cooled unit is the main unit newly added in water-deficient areas in northern my country in recent years. Because it uses air-cooled fans to directly cool the steam turbine exhaust, the air cooling system of the unit is arranged at an elevation of 40m-50m. After cooling the steam turbine exhaust steam, condensed water is formed, and the downcomer is reused The vertical distance of the descending pipeline of the generator set above 300MW is generally not less than 35m. This situation makes the condensate drop potential energy not negligible. According to the 30m height difference, the speed of the condensate due to gravity is as high as 25m / s during the d...

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Problems solved by technology

This situation makes the potential energy of condensed water drop not negligible. Calculated according to the height difference of 30m, the speed of condensed water falling due to the action of gravity is as high as 25m / s, and the condensed water reaches the elbow position to form a huge momentum, which makes the pipeline continuously vibrate at low frequency. Frequent low-frequency vibration will cause damage to the pipe support system

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