CN214891307U - Vacuum gas boiler flue gas waste heat recovery device - Google Patents

Abstract

The utility model relates to a flue gas waste heat recovery technical field, in particular to vacuum gas boiler flue gas waste heat recovery device. The device comprises a recovery device shell, an air inlet pipe, an air outlet pipe and a pipeline assembly, wherein the air inlet pipe is arranged on one side of the lower end of the shell and is communicated with a gas-fired boiler; a plurality of groups of blocking assemblies are arranged in the pipeline assembly at intervals, each group of blocking assemblies consists of two blocking pieces which are arranged oppositely, an inclination angle is formed between each two blocking pieces and the inner wall of the pipeline assembly, the inclination direction of each blocking piece is consistent with the flow direction of flue gas, and a narrow passage for the flue gas to pass through is formed between the two blocking pieces; and a spiral heat absorbing sheet is arranged on the periphery of the pipeline assembly. The utility model discloses simple structure can carry out recycle with the heat in vacuum gas boiler's the flue gas, and thermal recovery efficiency is high.

Description

Vacuum gas boiler flue gas waste heat recovery device

Technical Field

The utility model relates to a flue gas waste heat recovery technical field, in particular to vacuum gas boiler flue gas waste heat recovery device.

Background

The vacuum boiler forms a negative pressure vacuum environment in a closed furnace body, and heat medium water is filled in the vacuum environment. The heat medium water is heated by combustion or other methods, then is evaporated and condensed to the heat exchanger, and then the heat exchanger is used for heating the water to be heated.

When burning heating medium water, the partial heat that produces behind the gas combustion can be discharged along with the flue gas after the burning, causes partial thermal waste, though have the device to flue gas waste heat recovery at present, nevertheless the flue gas exhaust velocity can not be solved to most device, and then makes the heat recovery rate of flue gas reduce, though the device heat recovery rate who has is higher, but the structure is complicated, and the cost of manufacture is higher.

Therefore, there is a need for a flue gas waste heat recovery device of a vacuum gas boiler, which has a simple structure and can improve the flue gas recovery rate.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to solve the technical problem that a vacuum gas boiler flue gas waste heat recovery device is provided to solve the problem that exists in the background art.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the vacuum gas boiler flue gas waste heat recovery device comprises a recovery device shell, an air inlet pipe, an air outlet pipe and a pipeline assembly, wherein the air inlet pipe is arranged on one side of the lower end of the shell and is communicated with a gas boiler;

a plurality of groups of blocking assemblies are arranged in the pipeline assembly at intervals, each group of blocking assemblies consists of two blocking pieces which are arranged oppositely, an inclination angle is formed between each two blocking pieces and the inner wall of the pipeline assembly, the inclination direction of each blocking piece is consistent with the flow direction of flue gas, and a narrow passage for the flue gas to pass through is formed between the two blocking pieces;

and a spiral heat absorbing sheet is arranged on the periphery of the pipeline assembly.

Further, the pipe assembly comprises a plurality of horizontal pipes which are horizontally arranged and communicated with the air inlet pipe, each horizontal pipe is provided with a bent pipe which extends upwards, and all the bent pipes are communicated with the exhaust pipe.

Further, the inside water capacity chamber that is of casing, the water capacity intracavity is located to the pipeline subassembly, the lower extreme one side of casing is equipped with the inlet tube with water-soluble chamber intercommunication, upper end one side of casing is equipped with the outlet pipe with water-soluble chamber intercommunication.

Furthermore, the air inlet pipe and the exhaust pipe are both provided with a smoke filter.

Further, the baffle plate and the spiral heat absorbing plate are both made of copper.

Furthermore, a heat insulation layer is arranged on the outer side of the shell.

The utility model discloses vacuum gas boiler flue gas waste heat recovery device's beneficial effect is:

the narrow passage that blocks the subassembly and form can make the flow velocity of flue gas slow down, increases the heat exchange time of flue gas, and spiral heat absorption piece multiplicable heat exchange efficiency makes more heats be left, and the inlet tube setting is in the casing below, and the outlet pipe setting is in the casing top, and upper portion flows after being heated because of water, and cold water subsides in the lower floor, therefore hot water after the heat exchange flows out from the upper portion, and the cold water that is not exchanged is deposited inside the casing, increases heat exchange efficiency.

The utility model discloses simple structure can carry out recycle with the heat in vacuum gas boiler's the flue gas, and thermal recovery efficiency is high.

Drawings

FIG. 1 is a schematic view of a longitudinal side-sectional structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a lateral cross-sectional structure of an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the part A according to the embodiment of the present invention;

the components in the drawings are numbered as follows:

casing 1, intake pipe 2, blast pipe 3, gas filter 4, heat preservation 5, separation blade 6, narrow passageway 7, spiral heat absorbing sheet 8, horizontal pipeline 9, bending type pipeline 10, water holding cavity 11, inlet tube 12, outlet pipe 13.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments;

example (b):

as shown in fig. 1-3, the flue gas waste heat recovery device of the vacuum gas-fired boiler comprises a recovery device shell 1, an air inlet pipe 2 arranged on one side of the lower end of the shell 1 and communicated with the gas-fired boiler, an air outlet pipe 3 arranged on the upper end of the shell 1, and a pipeline assembly arranged in the shell 1 and connected with the air inlet pipe 2 and the air outlet pipe 3; and the air inlet pipe 2 and the air outlet pipe 3 are both provided with a flue gas filter 4. The flue gas filter 4 can filter the particulate matter in the flue gas, prevents that the flue gas from blocking the pipeline, the casing 1 outside is equipped with heat preservation 5, and the heat exchange between the reducible air of heat preservation 5 and the recovery unit reduces calorific loss.

A plurality of groups of blocking assemblies are arranged in the pipeline assembly at intervals, each group of blocking assemblies consists of two blocking sheets 6 which are oppositely arranged, an inclination angle is formed between each two blocking sheets 6 and the inner wall of the pipeline assembly, the inclination direction of each blocking sheet 6 is consistent with the flow direction of flue gas, and a narrow passage 7 for the flue gas to pass through is formed between each two blocking sheets 6; the narrow channel 7 formed by the blocking component can slow down the flowing speed of the flue gas and increase the heat exchange time of the flue gas, and the periphery of the pipeline component is provided with a spiral heat absorbing sheet 8. The baffle plate 6 and the spiral heat absorbing plate 8 are both made of copper. The spiral heat sink 8 increases the heat exchange efficiency, allowing more heat to be left,

the pipeline assembly comprises a plurality of horizontal pipelines 9 which are horizontally arranged and communicated with the air inlet pipe 2, each horizontal pipeline 9 is provided with a bent pipeline 10 which extends upwards, and all the bent pipelines 10 are communicated with the exhaust pipe 3.

The shell body 1 is internally provided with a water containing cavity 11, the pipeline assembly is arranged in the water containing cavity 11, and the transverse pipelines 9 and the bent pipelines 10 which are uniformly distributed are distributed in the water containing cavity 11 to increase heat exchange. The water-saving water purifier is characterized in that a water inlet pipe 12 communicated with the water-soluble cavity 11 is arranged on one side of the lower end of the shell 1, and a water outlet pipe 13 communicated with the water-soluble cavity 11 is arranged on one side of the upper end of the shell 1. The inlet pipe 12 is arranged below the shell 1, the outlet pipe 13 is arranged above the shell 1, and the cold water is settled at the lower layer because the water flows to the upper part after being heated, so the hot water after heat exchange flows out from the upper part, and the cold water which is not heat exchanged is stored in the shell 1, thereby increasing the heat exchange efficiency.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (6)

1. Vacuum gas boiler flue gas waste heat recovery device, its characterized in that: the device comprises a recovery device shell, an air inlet pipe, an air outlet pipe and a pipeline assembly, wherein the air inlet pipe is arranged on one side of the lower end of the shell and is communicated with a gas-fired boiler;

a plurality of groups of blocking assemblies are arranged in the pipeline assembly at intervals, each group of blocking assemblies consists of two blocking pieces which are arranged oppositely, an inclination angle is formed between each two blocking pieces and the inner wall of the pipeline assembly, the inclination direction of each blocking piece is consistent with the flow direction of flue gas, and a narrow passage for the flue gas to pass through is formed between the two blocking pieces;

and a spiral heat absorbing sheet is arranged on the periphery of the pipeline assembly.

2. The vacuum gas boiler flue gas waste heat recovery device of claim 1, wherein: the pipeline assembly comprises a plurality of horizontal pipelines which are horizontally arranged and communicated with the air inlet pipe, each horizontal pipeline is provided with a bent pipeline which extends upwards, and all the bent pipelines are communicated with the exhaust pipe.

3. The vacuum gas boiler flue gas waste heat recovery device of claim 1, wherein: the inside water capacity chamber that is of casing, the water capacity intracavity is located to the pipeline subassembly, the lower extreme one side of casing is equipped with the inlet tube that communicates with water capacity chamber, upper end one side of casing is equipped with the outlet pipe that communicates with water capacity chamber.

4. The vacuum gas boiler flue gas waste heat recovery device of claim 1, wherein: and the air inlet pipe and the exhaust pipe are both provided with a smoke filter.

5. The vacuum gas boiler flue gas waste heat recovery device of claim 1, wherein: the baffle plate and the spiral heat absorbing plate are both made of copper.

6. The vacuum gas boiler flue gas waste heat recovery device of claim 1, wherein: and a heat insulation layer is arranged on the outer side of the shell.

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