Non-horizontal foundation three-drum boiler

Abstract

The invention discloses a non-horizontal foundation three-drum boiler which can monitor and control a water level of a boiler, ensure the water circulation safety of the boiler and generate satisfactory steam under the boiler foundation of inclination of 10 degrees in arbitrary directions and swing of 15 degrees. The non-horizontal foundation three-drum boiler comprises a boiler subassembly whichis provided with a horizontal middle drum, a horizontal lower drum, a combustion chamber and a heat transmission assembly. The non-horizontal foundation three-drum boiler is characterized in that a vertical upper drum which plays a gas-water separating function is arranged above the middle drum, the upper drum is communicated with the middle drum by an ascending pipe, the upper drum is communicated with the lower drum by a descending pipe, a water-gas separator is arranged in the upper drum, a steam guiding pipe is arranged on the top of the upper drum, and a water inlet pipe is arranged on the upper drum. The non-horizontal foundation three-drum boiler is suitable for locations such as an offshore platform, and the like.

Description

technical field [0001] The invention relates to the field of boilers, in particular to a three-drum boiler with sublevel foundations for offshore platforms. Background technique [0002] A steam boiler is a device that burns various fuels, releases the chemical energy into heat energy, and then converts it into the heat energy of the medium (water or steam) for utilization. [0003] Such as image 3 , Figure 4 As shown, the traditional oil-fired and gas-steam boilers such as the SZS type double-drum vertical water-tube boiler mainly include a horizontal upper drum 17, a horizontal lower drum 18, a combustion chamber 16 (commonly known as a furnace), a transmission Furnace assembly of heat components; heat transfer components usually include membrane water cooling wall 4 arranged around the furnace, and parts such as tight water cooling wall middle partition wall and convection tube bundle 5; membrane water cooling wall 4, tight water cooling wall middle partition The wall...

AI Technical Summary

Problems solved by technology

This makes the traditional double-drum vertical water-tube boiler unable to meet the requirements of sea use, because the length of the horizontal upper drum 17 is generally not less than the length of the combustion flame in the furnace, such as the vertical double-drum boiler with an evaporation capacity of 20t / h. Water tube boiler, its length is about 4 ~ 5m

Since the height difference formed by a 10° inclination angle is about 700-870mm, when the offshore platform tilts or sways to the above-mentioned angle, in addition to the difficulty in monitoring and controlling the water level, it is more important to use it as supplementary water on the side with a high inclination. The downpipe has been exposed outside the water surface and cannot absorb water. On the other side, the water level is high enough to be close to the inlet of the steam-water separator 10. The steam carries a large amount of water and cannot be separated, but is directly discharged, which cannot meet the needs of steam. Require

It can be seen that the structure of the traditional double-drum vertical water-tube boiler that uses the horizontal upper drum 17 as a steam drum can no longer meet the use requirements of offshore platforms and other places with sub-horizontal foundations.

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