Vertical steam boiler

Abstract

An upright steam boiler comprises a screw heat exchanger, a boiler frame, a container in the frame, and a gas space between the frame and the container, wherein the top of the container is communicated with the inlet of screw smoke channel. The invention uses a secondary water heating system, while the water tank is at the bottom of the gas space and they are communicated. The ascending tube of the water tank via the container is communicated with the gas space, a steam outlet is above the gas space, and the water tank is disposed with a secondary water inlet. The invention can use secondary water heating system to increase water temperature quickly, while in operation, low-temperature soft water first enters into the screw heat exchanger, and the generated first heating water via a water tube, the water tank and the ascending tube enters into the gas space, and hot water circulates from the low temperature area to the high-temperature area.

Description

technical field [0001] The invention relates to a vertical boiler, in particular to a vertical boiler with a spiral heat exchanger, and belongs to the technical field of boilers. Background technique [0002] In the existing vertical boiler with spiral heat exchanger, the upper part is a spiral heat exchanger, the outer periphery of the lower part is the pot shell, the inside of the shell is the furnace and the preheating chamber surrounding the furnace, and the high-temperature flue gas flows from the inside to the outside along the spiral flue. , the hot water preheated by the preheating chamber flows from the outside to the inside along the spiral and the water channel, and the two flow in reverse. Compared with the traditional hot water boiler, the heat energy absorption and utilization rate is high and the floor space is small, but the boiler with this structure still has the following defects : First, there is only one heat exchange system in the composition, that is, ...

AI Technical Summary

Problems solved by technology

[0002] In the existing vertical boiler with spiral heat exchanger, the upper part is a spiral heat exchanger, the outer periphery of the lower part is the pot shell, the inside of the shell is the furnace and the preheating chamber surrounding the furnace, and the high-temperature flue gas flows from the inside to the outside along the spiral flue. , the hot water preheated by the preheating chamber flows from the outside to the inside along the spiral and the water channel, and the two flow in reverse. Compared with the traditional hot water boiler, the heat energy absorption and utilization rate is high and the floor space is small, but the boiler with this structure still has the following defects : First, there is only one heat exchange system in the composition, that is, a spiral heat exchanger, and its structure limits its use as an atmospheric hot water boiler; second, low-temperature water first enters the water chamber surrounding the high-temperature furnace, and then enters the relatively low temperature In the spiral heat exchanger, the heat exchange cycle process of water is not reasonable enough; the third is that the semicircular end plate of the spiral water channel in the center of the spiral body is directly facing the top of the furnace chamber, and the bottom surface of the semicircular end plate is directly heated by the flame. Low, reduced safety and service life

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