Steam discharge pipe blowback protection system
AssigneeGeneral Electric Company
InventorsDimitrios V. Doupis, Denis Bruno, Steven Kurdziel, Stewart Wyatt, Carmen Joseph Marrone, Hugo Enrique Soto Barragan
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Abstract
The present application provides a steam discharge pipe blowback protection system for use with a steam discharge pipe and a flow of steam therethrough. The steam discharge pipe blowback protection system may include a vent stack pipe and a drip pan with an exit end of the steam discharge pipe extending through the drip pan and into the vent stack pipe. The drip pan includes a slide plate positioned around the steam discharge pipe such that a blowback in the flow of steam causes the slide plate to seal the drip pan.
Claims17
A steam discharge pipe blowback protection system for use with a steam discharge pipe and a flow of steam therethrough, comprising:
- a vent stack pipe;
- wherein the vent stack pipe comprises a plurality of apertures positioned in a lower end thereof;
- and
- a drip pan;
- wherein an exit end of the steam discharge pipe extends through the drip pan and into the vent stack pipe;
- wherein the drip pan comprises a slide plate positioned around the steam discharge pipe;
- and
- wherein a blowback in the flow of steam causes the slide plate to seal the drip pan.
A method of flowing steam from a steam discharge pipe through a drip pan and into a vent stack pipe, comprising:
- initiating a flow of steam through the steam discharge pipe;
- receiving a blowback of steam from the steam discharge pipe into the drip pan, wherein the blowback of steam creates a positive pressure inside the drip pan and forces a slide plate to seal the drip pan;
- flowing an additional flow of steam into the vent stack pipe to achieve a steady state, wherein the additional flow of steam creates a negative pressure inside the drip pan and forces the slide plate to open the drip pan;
- and
- flowing ambient air into the flow of steam in the vent stack pipe.
A heat recovery steam generator with a flow of steam therethrough, comprising:
- a steam discharge pipe to vent the flow of steam;
- a vent stack pipe to receive the flow of steam from the steam discharge pipe;
- wherein the vent stack pipe comprises a plurality of apertures positioned in a lower end thereof within the drip pan;
- and
- a drip pan surrounding the steam discharge pipe and the vent stack pipe;
- wherein the drip pan comprises a slide plate positioned around the steam discharge pipe;
- and
- wherein a blowback in the flow of steam causes the slide plate to seal the drip pan.
Dependencies are inferred from the claim text.