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Large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue

A technology for threaded smoke pipes and hot water boilers, applied in water heaters, fluid heaters, lighting and heating equipment, etc. The effect of reducing smoke temperature, large water capacity, and improving thermal efficiency

Active Publication Date: 2011-08-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a large-scale water-fire tube hot water boiler with double drum horizontally placed vertical threaded smoke tubes to solve the problem that the threaded smoke tubes of the existing water-fire tube hot water boilers are arranged horizontally. When operating under load, there are problems such as dust accumulation in the threaded smoke pipe, difficulty in cleaning the dust, a large reduction in the heat transfer area, a significant increase in the exhaust gas temperature, and a significant drop in the thermal efficiency of the boiler

Method used

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  • Large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue
  • Large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue
  • Large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine Figure 1 ~ Figure 4 Describe this embodiment. The boiler in this embodiment includes a furnace body 30, a coal hopper 1, a combustion device 2, a lower header 4 on the front wall water cooling wall, a front wall water cooling wall 5, an upper drum 6, and a left wall water cooling wall. Upper header 8, upper header 31 of the right wall water cooling wall, left wall water cooling wall 9, right wall water cooling wall 32, left wall water cooling wall lower header 10, right wall water cooling wall lower header 33, lower Drum 12, lower header 13 of rear wall water-cooled wall, rear wall water-cooled wall 14, outlet pipe 25, first outlet pipe 24 and second outlet pipe 34; the front end in the furnace body 30 is the furnace 3, and the furnace 3 is provided with a slagging outlet 54 at the rear end of the lower part, the coal feeding hopper 1 is arranged in front of the furnace body 30 and directly above the input end of the combustion...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the vertical threaded smoke pipe economizer 16 in this embodiment is composed of a housing 50 and a plurality of threaded smoke pipes 51; the multiple threaded smoke pipes 51 are vertically placed in the housing 50, and The two ends of each vertically placed threaded smoke pipe 51 are respectively inserted into the corresponding threaded smoke pipe mounting holes on the upper cover plate 49 and the lower bottom plate 48 of the housing 50, and the other end of the second connecting pipe 21 passes through The lower bottom plate 48 of the housing 50 or the bottom side wall 55 of the housing 50 communicates with the inner cavity of the vertical threaded flue pipe economizer 16 . Such an arrangement not only has a simple structure, but also prevents dust from accumulating in the threaded smoke pipe 51 . Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0009] Specific implementation mode three: combination figure 1 Describe this embodiment, the combustion equipment 2 described in this embodiment is a chain grate 52, and the chain grate 52 is the prior art. Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

A large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue relates to a water-fire tube hot water boiler. The aim of the invention is to settle the problemsof ash accumulation, hard ash elimination, and reduced thermal efficiency of boiler in the prior water-fire tube hot water boiler. A burnout chamber, a convection calandria and a vertical threaded flue coal economizer are provided in the boiler body. The convection calandria is communicated with the upper barrel and the lower barrel. A warm water area and a hot warm water area are installed in the upper barrel. A first connecting pipe is communicated with a lower box of water cooled wall of back wall and the lower drum. A second connecting pipe is communicated with a lower drum and a verticalthreaded flue coal economizer. A third connecting pipe is communicated with a hot water area and the vertical threaded flue coal economizer. The down pipe of water cooled wall of front wall is communicated with a lower collection box of water cooled wall of front wall and the cold water area. The down pipe of left wall is communicated with a lower collection box of water cooled wall of left wall.The down pipe of right wall is communicated with a lower collection box of water cooled box of water cooled wall of right wall. The large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue according to the invention adopts the vertical threaded flue coal economizer and has the advantages of no ash accumulation in the threaded flue, easy ash eliminationand high thermal efficiency of boiler.

Description

technical field [0001] The invention relates to a water-fire tube hot water boiler. Background technique [0002] In order to meet the heating needs in winter, there are a large number of water-fire tube hot water boilers in operation in my country. The current water-fire tube boilers have the problem of ash accumulation in the threaded smoke tube under low load, making it difficult to clean the ash. When the exhaust gas temperature rises above 200°C, the boiler efficiency will drop significantly. The reason for the above-mentioned problems is that the main components of the current water-fire tube boilers, that is, the threaded smoke tubes, are arranged horizontally. When the load is lower than 50% of the rated load, the velocity of the flue gas in the threaded smoke tubes drops significantly, and the large volume of the flue gas cannot be taken away. Particle smoke and dust lead to dust accumulation in the threaded smoke pipe, greatly reducing the heat transfer area, so t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/44F24H9/00F24H9/18
Inventor 别如山王庆功
Owner HARBIN INST OF TECH
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