CN215676587U

CN215676587U - Boiler waste heat recycling device

Info

Publication number: CN215676587U
Application number: CN202122299821.8U
Authority: CN
Inventors: 李亚栋; 赵向荣; 韩保杰; 王业飞; 蔡胜军; 何超
Original assignee: Shanxi Yangmei Jiuzhou Energy Conservation And Environmental Protection Technology Co ltd
Current assignee: Shanxi Yangmei Jiuzhou Energy Conservation And Environmental Protection Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-01-28
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a boiler waste heat recycling device which comprises a flue gas calandria, wherein the lower half section of the flue gas calandria is connected with a box body, a flue gas conveying pipe is arranged in the box body and connected with the lower half section of the flue gas calandria, the other end of the flue gas conveying pipe is connected with a flue gas output pipe, the other end of the flue gas output pipe is connected with the upper half section of the flue gas calandria, a washing mechanism is arranged in the middle section of the flue gas output pipe, a temperature sensor is embedded in the side wall of an inner cavity of the box body, a drain pipe is arranged on the lower end face of the box body, a water supply pipe is connected with the outer end of the box body, and a circulating mechanism is arranged between the water supply pipe and the drain pipe in a combined splicing mode. The utility model has reasonable integral design, realizes the waste heat recovery of the flue gas, ensures the energy-saving and environment-friendly effect of the flue gas emission and has strong practicability.

Description

Boiler waste heat recycling device

Technical Field

The utility model relates to the technical field of boiler waste heat recovery devices, in particular to a boiler waste heat recovery and utilization device.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. The boiler comprises a boiler and a furnace. The hot water or steam generated in the boiler can directly provide heat energy for industrial production and people life, and can also be converted into mechanical energy through a steam power device, or the mechanical energy is converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, is mainly used for life, and has a small amount of application in industrial production. The boiler for generating steam is called as a steam boiler, often called as a boiler for short, and is widely used for thermal power stations, ships, locomotives and industrial and mining enterprises.

In the prior art, most of the used fuels of the boiler are coal, the boiler not only contains a large amount of heat in the smoke discharged during the working process, but also contains a large amount of dust and toxic substances in the discharged waste smoke, if the gas is directly discharged into the air, the air can be polluted greatly, meanwhile, the waste gas contains a large amount of heat energy, a large amount of energy can be wasted through direct discharge, the requirement of energy conservation and emission reduction development is not met, and therefore, the boiler waste heat recycling device is provided and designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a boiler waste heat recycling device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a boiler waste heat recovery utilizes device, includes the flue gas calandria, the connection of the second half section of flue gas calandria is provided with the box, in the box and with the second half section of flue gas calandria connects mutually and is provided with the flue gas conveyer pipe, the other end of flue gas conveyer pipe meets and is provided with the flue gas output tube, the other end of flue gas output tube with the first half section of flue gas calandria meets, flue gas output tube middle section is provided with washing mechanism, the inner chamber lateral wall embedding of box is provided with temperature sensor, the lower terminal surface of box is provided with the drain pipe, the outside end connection of box is provided with the flow pipe, the flow pipe with the combination of pegging graft is provided with circulation mechanism between the drain pipe.

Preferably, the upper half section of the flue gas calandria and the lower half section of the flue gas calandria are provided with closed partition plates.

Preferably, the flue gas conveying pipe is designed in a spiral mode.

Preferably, the washing mechanism comprises a washing liquid tank, an inverted U-shaped pipe is inserted into one side of the upper end face of the washing liquid tank, a circulating liquid pump is arranged at the vertical end of one side of the inverted U-shaped pipe, the vertical end of the other side of the inverted U-shaped pipe is inserted into the washing liquid tank, the two sides of the washing liquid tank are connected with the flue gas output pipe, and the output direction of the flue gas output pipe is opposite to the circulating washing direction of the inverted U-shaped pipe.

Preferably, the circulating mechanism comprises a circulating water pipe, a circulating water pump is arranged at a certain section of the circulating water pipe, one end of the circulating water pipe is connected with the water supply pipe, and the other end of the circulating water pipe is connected with the drain pipe.

Preferably, the temperature sensor is electrically connected with a controller, and the output end of the controller is electrically connected with the circulating water pump and the circulating liquid pump.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the spiral flue gas output pipe used in the box body, the water feeding pipe and the water discharging pipe which are respectively arranged outside the box body and the circulating mechanism which is combined and arranged between the water feeding pipe and the water discharging pipe are used, so that flue gas containing waste heat in the flue gas output pipe can fully exchange heat with water in the box body, meanwhile, the temperature sensor embedded in the box body can constantly detect the temperature of the water in the box body, when the temperature is lower, the circulating water pump can be started to circularly feed hot water discharged by the water discharging pipe into the box body, and the hot water is conducted and exchanged heat with the flue gas for multiple times, so that the waste heat recovery heat of the flue gas is fully utilized, and the energy-saving effect is further ensured;

2. the washing mechanism is arranged at the same time, so that under the action of the circulating liquid pump, the washing liquid in the washing liquid tank can be fully contacted with the flue gas of the flue gas output pipe through the inverted U-shaped pipe and harmful substances in the flue gas can be absorbed, the flue gas is purified, the pollution to the atmospheric environment caused by the emission of the flue gas is effectively avoided, and the development concept of environmental protection is met.

Drawings

FIG. 1 is a schematic view of the overall structure of a boiler waste heat recycling device according to the present invention;

FIG. 2 is a block diagram of an electrical connection structure of a boiler waste heat recycling device according to the present invention.

In the figure: 1. a flue gas calandria; 2. a box body; 3. a flue gas conveying pipe; 4. a flue gas output pipe; 5. a washing mechanism; 51. a washing liquid tank; 52. reversing the U-shaped pipe; 53. a circulating liquid pump; 6. a temperature sensor; 7. a drain pipe; 8. a water supply pipe; 9. a circulating mechanism; 91. a circulating water pipe; 92. a water circulating pump; 10. sealing the partition plate; 11. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a boiler waste heat recovery utilizes device, including flue gas calandria 1, the box 2 is installed in the connection of the half section down of flue gas calandria 1, in the box 2 and meet with the half section down of flue gas calandria 1 and install flue gas conveyer pipe 3, flue gas conveyer pipe 3's the other end meets and installs flue gas output tube 4, flue gas output tube 4's the other end meets with the half section first of flue gas calandria 1, washing mechanism 5 is installed in flue gas output tube 4 middle section, temperature sensor 6 is installed in the inner chamber lateral wall embedding of box 2, drain pipe 7 is installed to the lower terminal surface of box 2, the outside end connection of box 2 is installed and is sent water pipe 8, it has circulation mechanism 9 to make up grafting composite mounting between sent water pipe 8 and drain pipe 7.

The upper half section of the flue gas calandria 1 and the lower half section of the flue gas calandria 1 are provided with closed clapboards 10; the flue gas conveying pipe 3 adopts a spiral design; the washing mechanism 5 comprises a washing liquid tank 51, one side of the upper end surface of the washing liquid tank 51 is inserted with a U-reversing pipe 52, the vertical end of one side of the U-reversing pipe 52 is provided with a circulating liquid pump 53, the vertical end of the other side of the U-reversing pipe 52 is inserted into the washing liquid tank 51, two sides of the washing liquid tank 51 are connected with the flue gas output pipe 4, and the output direction of the flue gas output pipe 4 is opposite to the circulating washing direction of washing by the U-reversing pipe 52; the circulating mechanism 9 comprises a circulating water pipe 91, a section of the circulating water pipe 91 is provided with a circulating water pump 92, one end of the circulating water pipe 91 is connected with the water supply pipe 8, and the other end of the circulating water pipe 91 is connected with the drain pipe 7; the temperature sensor 6 is electrically connected with a controller 11, and the output end of the controller 11 is electrically connected with the circulating water pump 92 and the circulating liquid pump 53.

The working principle is as follows: when the utility model is used, the waste heat generated in the flue gas can be conveyed into the box body 2 through the spiral flue gas conveying pipe 3 connected with the lower half section of the flue gas calandria 1, and the cold water to be heated is conveyed through the water conveying pipe 8 arranged at the outer side end of the box body 2, wherein, the flue gas conveying pipe 3 with the spiral design can fully exchange heat with the water in the box body 2 to play a role of heating, meanwhile, the temperature sensor 6 embedded in the box body 2 can detect the temperature of the water in the box body 2, when the temperature is lower than a set limit value, the circulating water pump 92 can be started, the hot water discharged through the water discharging pipe 7 is circularly conveyed into the box body 2, the heat exchange is conducted with the flue gas waste heat for many times, the heating effect of the hot water is ensured, and when the flue gas passes through the flue gas output pipe 4, the circulating liquid pump 53 arranged at one side of the U-pouring pipe 52 in the washing mechanism 5, the washing liquid in the washing liquid tank 51 can be in full contact reaction with the flue gas in the flue gas output pipe 4, harmful substances in the flue gas can be absorbed, the flue gas is purified and finally discharged safely, and the device has the advantages of being simple in operation, convenient to use and good in using effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a boiler waste heat recovery utilizes device, includes flue gas calandria (1), its characterized in that: the lower half section of flue gas calandria (1) is connected and is provided with box (2), in box (2) and with the lower half section of flue gas calandria (1) meets and is provided with flue gas duct pipe (3), the other end of flue gas duct pipe (3) meets and is provided with flue gas output tube (4), the other end of flue gas output tube (4) with the first half section of flue gas calandria (1) meets, flue gas output tube (4) middle section is provided with washing mechanism (5), the inner chamber lateral wall embedding of box (2) is provided with temperature sensor (6), the lower terminal surface of box (2) is provided with drain pipe (7), the outside end connection of box (2) is provided with flow pipe (8), flow pipe (8) with combination grafting combination is provided with circulation mechanism (9) between drain pipe (7).

2. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: the upper half section of the flue gas calandria (1) and the lower half section of the flue gas calandria (1) are provided with closed partition plates (10).

3. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: the flue gas conveying pipe (3) adopts a spiral design.

4. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: washing mechanism (5) are including washing liquid groove (51), the up end one side grafting of washing liquid groove (51) is provided with the pipe of falling U (52), the vertical end in one side of the pipe of falling U (52) is provided with circulating liquid pump (53), the vertical end of the opposite side of the pipe of falling U (52) is pegged graft to in washing liquid groove (51), the both sides of washing liquid groove (51) with flue gas output tube (4) meet, just the output direction of flue gas output tube (4) with the circulation washing opposite direction of the washing of the pipe of falling U (52).

5. The boiler waste heat recovery and utilization device according to claim 4, characterized in that: the circulating mechanism (9) comprises a circulating water pipe (91), a circulating water pump (92) is arranged at one section of the circulating water pipe (91), one end of the circulating water pipe (91) is connected with the water feeding pipe (8), and the other end of the circulating water pipe (91) is connected with the drain pipe (7).

6. The boiler waste heat recovery and utilization device according to claim 5, characterized in that: the temperature sensor (6) is electrically connected with a controller (11), and the output end of the controller (11) is electrically connected with the circulating water pump (92) and the circulating liquid pump (53).