Single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler

A corner-tube boiler and single-drum technology, used in steam boilers, boiler water pipes, fluid heaters, etc., can solve the problems of insufficient fuel combustion, high maintenance rate, and high nitrogen oxide emission concentration, and achieve stable support structures, The effect of long residence time and safe water circulation

Pending Publication Date: 2019-01-04
HARBIN SIFANG BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure leads to short residence time of the flue gas and needs to turn to enter the upper part of the furnace, the flame cannot stretch freely, the gas combustion is uneven, the fuel combustion is insufficient, the flue gas filling de

Method used

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  • Single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler
  • Single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler
  • Single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The invention provides a single-drum slanted injection gas-fired corner-tube boiler, such as figure 1 As shown, it includes the boiler body part and the combustion system part. The boiler body part includes a boiler body 1, and six front-side descending pipes 11, a middle descending pipe 17, a first throttling ring 4, and a rear-side descending exhaust pipe 22 are vertically arranged around the boiler body 1 and have supporting and descending functions. Two throttling coils 23, a drum 3 arranged on the upper left part of the boiler body 1, a water inlet pipe 2 connected to the drum 3, a water supply pipe 15, a down pipe 5 and an upper return pipe 16, a side wall water wall 7, and an upper part of the furnace 6 , slanted lower intake furnace lower part 9, front arch water wall 8, front and rear arch lower headers 26, side wall lower headers 14, side wall upper headers 21, front and rear arch upper headers 19, water outlet headers 18, flag Header 20 on the heating surfac...

Embodiment 2

[0031] This embodiment is a further improvement made on the basis of Embodiment 1, including all the technical features of Embodiment 1, such as figure 2 As shown, the steam outlet is added on the drum 3, the water header 18 is replaced, and the water supply pipe 15 in the body becomes a gas collector.

Embodiment 3

[0033] This embodiment is a further improvement made on the basis of Embodiment 1, including all the technical features of Embodiment 1, such as image 3 As shown, the drum 3 is on the upper right part of the boiler body 1 .

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Abstract

The invention discloses a single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler which comprises a boiler body provided with a combustion system; a support structure is arranged in the boiler body, and the support structure comprises a front side down pipe, a middle down pipe, and a rear side down and exhaust pipe; and the two ends of each of the front side down pipe, the middle down pipe and the rear side down and exhaust pipe are correspondingly connected with a side wall upper header and a side wall lower header which are horizontally arranged, a boiler drum is arranged above one side of the boiler body, a water inlet pipe is connected to the boiler drum, a down pipe connected with the middle down pipe is connected to the bottom of the boiler drum, a front and rear arch lower header is connected to the bottom of the middle down pipe, the upper part of the interior of the boiler body is provided with a front and rear arch upper header communicating with the front and rear arch lower header, and the front and rear arch upper header communicates with the boiler drum through an upper water return pipe. The single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler is long in fuel retention time, free in flame extension, full in combustion of fuel, stable in support structure and safe in water circulation.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to a single-drum oblique injection gas-fired corner-tube boiler with lower intake air. Background technique [0002] As we all know, the current gas-fired boilers generally have side air intake, the distance between the front and rear of the combustion chamber is short, the height of the combustion chamber is low, the volume of the combustion chamber is small, and the support structure and water circulation are not safe. This structure leads to short residence time of the flue gas and needs to turn to enter the upper part of the furnace, the flame cannot stretch freely, the gas combustion is uneven, the fuel combustion is insufficient, the flue gas filling degree of the combustion chamber is not high, the emission concentration of nitrogen oxides is high, and the flue gas is directly washed The rear wall of the furnace is severely worn, and the maintenance rate is high, which increa...

Claims

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Application Information

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IPC IPC(8): F22B31/00F22B37/10F24H1/44F24H9/18F24H9/00
CPCF22B31/00F22B37/10F24H1/44F24H9/0005F24H9/1836
Inventor 白晶纪美慧孙伟东
Owner HARBIN SIFANG BOILER
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