CN221324523U

CN221324523U - Boiler recirculation air duct structure

Info

Publication number: CN221324523U
Application number: CN202323254711.5U
Authority: CN
Inventors: 李森林; 林涛; 唐建亮; 盛卫兵; 李惠君; 方日明; 黄佳; 陆方芳; 柯沈峰
Original assignee: Shanghai Jinlian Thermoelectricity Co ltd
Current assignee: Shanghai Jinlian Thermoelectricity Co ltd
Priority date: 2023-11-30
Filing date: 2023-11-30
Publication date: 2024-07-12
Anticipated expiration: 2033-11-30

Abstract

The application relates to the technical field of boilers and discloses a boiler recycling air duct structure which comprises a boiler body, a pressurizer and a radiation heater, wherein the pressurizer and the radiation heater are arranged in the boiler body; the circulating pipeline consists of a smoke inlet pipe, two connecting pipes and a filter pipe, wherein the number of the smoke inlet pipe and the number of the connecting pipes are two, connecting discs are welded at the opposite ends of the two connecting pipes and the two ends of the filter pipe, and the two adjacent connecting discs are fixed through bolts; the filter pipe is provided with a filter structure for filtering the flue gas. This boiler recirculation wind channel structure through filtration's installation, can shift out the filter screen in the filter tube, reaches the advantage of the filter screen of being convenient for overhaul.

Description

Boiler recirculation air duct structure

Technical Field

The application relates to the technical field of boilers, in particular to a boiler recirculation air duct structure.

Background

The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, and the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy. The boiler is a water container heated on fire, the boiler is a place where fuel is burned, and the boiler comprises two parts of a boiler and a boiler. The hot water or steam generated in the boiler can directly provide heat energy required by industrial production and people living, and can also be converted into mechanical energy through a steam power device or converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, and is mainly used for life and has a small amount of application in industrial production. Steam generating boilers are called steam boilers, often referred to simply as boilers, and are used in many thermal power stations, ships, locomotives and industrial and mining enterprises.

Traditional boiler does not set up flue gas recirculation system, leads to the heating to need a large amount of fuels, has wasted the too much energy, and through retrieving, chinese patent CN207298910U discloses a biomass boiler flue gas recirculation overgrate air device, including boiler body, logical flue pipe way, touch-control screen assembly, first combustion chamber and second combustion chamber, first feed inlet and second feed inlet have been seted up at the top of boiler body. The two combustion chambers are used, so that the fuel is fully combusted, and the utilization rate of the fuel is improved.

In the process of realizing the application, the inventor finds that at least the following problems exist in the prior art, the existing biomass boiler flue gas recirculation overgrate air device filters flue gas through a filter screen, the quantity of the boiler flue gas is large when in circulation, the filter screen is easy to be blocked after a long time, but the filter screen is fixedly arranged in a pipeline, and the pipeline is lack of an overhaul port of the filter screen, so that staff is inconvenient to overhaul, and therefore, the boiler recirculation air channel structure is provided to solve the problems.

Disclosure of utility model

Aiming at the defects of the prior art, the application provides a boiler recirculation air duct structure which has the advantages of convenient maintenance of a filter screen and the like, and solves the problems that the filter screen is easy to be blocked after long time and is fixedly arranged in a pipeline, so that staff is inconvenient to maintain.

In summary, the present application provides the following technical solutions: the utility model provides a boiler recirculation wind channel structure, includes the boiler body, sets up in the inside pressurizer and the radiant heater of boiler body, the inside of boiler body is provided with first combustion chamber and second combustion chamber, the inside baffle that separates first combustion chamber and second combustion chamber of installing of boiler body, be provided with the circulation pipeline that is linked together on first combustion chamber and the second combustion chamber;

The circulating pipeline consists of a smoke inlet pipe, two connecting pipes and a filter pipe, wherein the number of the smoke inlet pipe and the number of the connecting pipes are two, connecting discs are welded at the opposite ends of the two connecting pipes and the two ends of the filter pipe, and the two adjacent connecting discs are fixed through bolts;

Be provided with on the filter tube and be used for carrying out filterable filtration to the flue gas, filtration is including demountable installation in the inside mounting bracket of filter tube, the inside fixed mounting of mounting bracket has the filter screen, the slider is all installed to the both sides that the mounting bracket is close to the filter tube inner wall, the spout with slider looks adaptation has been seted up to the inside of filter tube, and slider and spout sliding connection.

By adopting the technical scheme, the filter screen can be moved out of the filter pipe through the installation of the filter structure, so that the filter screen is convenient to overhaul by an overhaul worker, the advantage of convenient overhaul of the filter screen is achieved, and the problems that the filter screen is easy to block after a long time and is fixedly installed in a pipeline, and the overhaul worker is inconvenient to overhaul are solved.

Further, the bottom ends of the two smoke inlet pipes extend to the first combustion chamber and the second combustion chamber respectively, and one ends of the two connecting pipes, which are separated from each other, are fixedly communicated with the two smoke inlet pipes respectively.

The beneficial effects of adopting the further scheme are as follows: through the installation of two smoke inlet pipes, the flue gas is convenient for circulate to the inside of second combustion chamber from first combustion chamber.

Further, both ends of the filter pipe are communicated with the sliding groove, the number of the installation racks and the filter screens in the filter structure is two, and the mesh sizes of the two filter screens are different.

The beneficial effects of adopting the further scheme are as follows: through two filter screens that the mesh is different, improve the filtration to the flue gas, realize the advantage that the filter effect is good.

Further, the handles are fixedly installed on the upper surfaces of the two mounting frames, and sealing gaskets which are abutted to the sliding grooves are installed on the outer surfaces of the top ends of the mounting frames.

The beneficial effects of adopting the further scheme are as follows: through the installation of handle, can shift out the filter screen in the filter tube, the maintainer of being convenient for overhauls the filter screen.

Further, the number of the pressurizer and the radiant heater is two, and the two pressurizers and the two radiant heaters are respectively arranged in the first combustion chamber and the second combustion chamber.

The beneficial effects of adopting the further scheme are as follows: by means of the two pressurizers and the two radiant heaters, fuel can be combusted, and a flue gas recirculation system is achieved.

Further, the baffle is crisscross form and distributes, the rack is installed to radiant heater's below, the fixed intercommunication in left side of boiler body has the air-supply line, and the fixed intercommunication in right side of boiler body has out the tobacco pipe, muffler and first control valve are all installed to the inside of air-supply line and play tobacco pipe.

The beneficial effects of adopting the further scheme are as follows: through the installation of muffler and first control valve, not only can noise abatement, improve operational environment quality, can also carry out the hole to smoke volume and new trend.

Further, two feed inlets are installed at the top of the boiler body, and second control valves are installed in the two feed inlets.

The beneficial effects of adopting the further scheme are as follows: by installing the second control valve, the fuel can be controlled, and excessive fuel addition can be prevented.

Further, a wind speed tester is installed on the right inner wall of the second combustion chamber, the output end of the wind speed tester is fixedly communicated with the smoke outlet pipe, a temperature sensor is installed on the top inner walls of the first combustion chamber and the second combustion chamber, and a controller is fixedly installed on the outer surface of the boiler body.

The beneficial effects of adopting the further scheme are as follows: through temperature sensor's installation, can transmit temperature data in real time, the staff of being convenient for observes.

Compared with the prior art, the application provides a boiler recirculation air duct structure, which has the following beneficial effects:

1. This boiler recirculation wind channel structure, through the installation of handle, can shift out the filter screen in the filter tube, the maintainer of being convenient for overhauls the filter screen, reaches the advantage of being convenient for overhaul the filter screen, and the volume is great when having solved boiler flue gas circulation, and after a long time, the filter screen appears blocking up very easily, but filter screen fixed mounting leads to the inconvenient problem of overhauling of staff in the pipeline.

2. This boiler recirculation wind channel structure adds right amount biomass fuel through the feed inlet, opens the radiant heater in the first combustion chamber, and fuel begins burning, opens the pressurizer after a period, and the flue gas that produces gets into the tobacco pipe of intaking, and in the filter tube input was given vent to anger in the second combustion chamber, the wind speed tester can automatic test wind speed, only need at this moment in the second combustion chamber burn less partial fuel can reach the temperature requirement of heating, temperature sensor can be in real time with temperature data transmission to the controller, finally discharges the flue gas into circulation system through going out the tobacco pipe.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present application;

FIG. 2 is a perspective view of the structure of the filter tube and filter screen of the present application;

Fig. 3 is an enlarged schematic view of the structure of fig. 2 a according to the present application.

Reference numerals illustrate:

1. A boiler body; 2. a first combustion chamber; 3. a second combustion chamber; 4. a pressurizer; 5. a radiant heater; 6. a partition plate; 7. a placing rack; 8. an air inlet pipe; 9. a smoke outlet pipe; 10. a muffler; 11. a first control valve; 12. a feed inlet; 13. a second control valve; 14. a smoke inlet pipe; 15. a connecting pipe; 16. a filter tube; 17. a connecting disc; 18. a mounting frame; 19. a filter screen; 20. a slide block; 21. a chute; 22. a wind speed tester; 23. a temperature sensor; 24. a handle.

Detailed Description

Referring to fig. 1, a boiler recirculation air duct structure includes a boiler body 1, a pressurizer 4 and a radiant heater 5 disposed in the boiler body 1, a first combustion chamber 2 and a second combustion chamber 3 disposed in the boiler body 1, a partition plate 6 for partitioning the first combustion chamber 2 and the second combustion chamber 3 disposed in the boiler body 1, wherein the partition plate 6 is distributed in a cross shape, and a placement frame 7 is disposed below the radiant heater 5 for placement and installation of the radiant heater 5. The left side of the boiler body 1 is fixedly communicated with an air inlet pipe 8, the right side of the boiler body 1 is fixedly communicated with a smoke outlet pipe 9, and the inside of the air inlet pipe 8 and the inside of the smoke outlet pipe 9 are respectively provided with a silencer 10 and a first control valve 11. Through the installation of muffler 10 and first control valve 11, not only noise reduction, improvement operational environment quality can also carry out the hole to smoke volume and new trend.

Wherein, two feed inlets 12 are installed at the top of the boiler body 1, and a second control valve 13 is installed inside each of the two feed inlets 12. The number of the pressurizer 4 and the radiant heater 5 is two, and the two pressurizers 4 and the two radiant heaters 5 are installed inside the first combustion chamber 2 and the second combustion chamber 3, respectively.

And, install wind speed tester 22 on the right side inner wall of second combustion chamber 3, and wind speed tester 22's output and play tobacco pipe 9 fixed intercommunication, wind speed tester 22 can automatic test wind speed, reduces the burning of second combustion chamber 3. The inner walls of the top surfaces of the first combustion chamber 2 and the second combustion chamber 3 are provided with temperature sensors 23, and the outer surface of the boiler body 1 is fixedly provided with a controller. By means of the two pressurizers 4 and the two radiant heaters 5, fuel can be burned, realizing a flue gas recirculation system. When the air is discharged, the air speed tester 22 can automatically test the air speed, at the moment, only a small part of fuel is needed to be burnt in the second combustion chamber 3, the heating temperature requirement can be met, and the temperature sensor 23 can transmit temperature data into the controller in real time.

It should be noted that, the pressurizer 4, the radiation heater 5, the wind speed tester 22 and the temperature sensor 23 all belong to a conventional technology known to the public in the prior art, so that the specific structural composition and working principle thereof will not be repeated herein. The wind speed tester 22 is electrically connected with the controller.

Referring to fig. 1, in the present embodiment, a first combustion chamber 2 and a second combustion chamber 3 are provided with a circulation pipe which is communicated with each other; the circulation pipeline comprises a smoke inlet pipe 14, a connecting pipe 15 and a filter pipe 16, the number of the smoke inlet pipe 14 and the number of the connecting pipes 15 are two, connecting discs 17 are welded at the opposite ends of the two connecting pipes 15 and the two ends of the filter pipe 16, and the two adjacent connecting discs 17 are fixed through bolts.

Wherein, the bottom ends of two smoke inlet pipes 14 extend to the inside of the first combustion chamber 2 and the second combustion chamber 3 respectively, and the separated ends of two connecting pipes 15 are fixedly communicated with the two smoke inlet pipes 14 respectively. The connecting pipe 15 can be provided with a flow valve which is matched with the first control valve 11 to facilitate the discharge of the smoke generated in the second combustion chamber 3.

Referring to fig. 1-3, in this embodiment, a filtering structure for filtering flue gas is disposed on a filtering tube 16, the filtering structure includes a mounting frame 18 detachably mounted inside the filtering tube 16, a filter screen 19 is fixedly mounted inside the mounting frame 18, sliding blocks 20 are mounted on two sides of the mounting frame 18, which are close to the inner wall of the filtering tube 16, a sliding groove 21 adapted to the sliding blocks 20 is formed inside the filtering tube 16, and the sliding blocks 20 are slidably connected with the sliding groove 21. Both ends of the filter pipe 16 are communicated with the sliding grooves 21, the number of the installation frames 18 and the filter screens 19 in the filter structure is two, and the mesh sizes of the two filter screens 19 are different. Handles 24 are fixedly mounted on the upper surfaces of both mounting brackets 18.

When the filter screen 19 is used, the filter screen 19 can be moved out of the filter tube through the installation of the handle 24, so that the filter screen can be overhauled by overhaulers conveniently.

The outer surface of the top end of the mounting frame 18 is provided with a sealing gasket which is abutted against the sliding groove 21. By installing the gasket, the chute 21 can be sealed, and the smoke is prevented from leaking therefrom.

The working principle of the embodiment is as follows:

The flue gas is conveyed through the flue gas inlet pipe 14, the connecting pipe 15 and the filter pipe 16, the flue gas is filtered by the filter screen 19 at the moment, the filtered flue gas enters the second combustion chamber 3, the wind speed tester 22 automatically tests the wind speed when the flue gas is discharged, at the moment, the temperature requirement of heating can be met by combusting a small amount of fuel in the second combustion chamber 3, and when the filter screen 19 needs to be overhauled, the filter screen 19 can be moved out of the filter pipe through the installation of the handle 24, so that overhauling of the filter screen by overhauling staff is facilitated.

Claims

1. The utility model provides a boiler recirculation wind channel structure, includes boiler body (1), sets up in inside presser (4) and radiation heater (5) of boiler body (1), its characterized in that: the boiler comprises a boiler body (1), wherein a first combustion chamber (2) and a second combustion chamber (3) are arranged in the boiler body (1), a partition plate (6) for separating the first combustion chamber (2) from the second combustion chamber (3) is arranged in the boiler body (1), and circulating pipelines which are communicated are arranged on the first combustion chamber (2) and the second combustion chamber (3);

the circulating pipeline consists of a smoke inlet pipe (14), connecting pipes (15) and a filter pipe (16), wherein the number of the smoke inlet pipe (14) and the number of the connecting pipes (15) are two, connecting discs (17) are welded at the opposite ends of the two connecting pipes (15) and the two ends of the filter pipe (16), and the two adjacent connecting discs (17) are fixed through bolts;

Be provided with on filter tube (16) and be used for carrying out filterable filtration to flue gas, filtration is including detachably mounting in inside mounting bracket (18) of filter tube (16), the inside fixed mounting of mounting bracket (18) has filter screen (19), slider (20) are all installed to the both sides that mounting bracket (18) are close to filter tube (16) inner wall, spout (21) with slider (20) looks adaptation have been seted up to the inside of filter tube (16), and slider (20) and spout (21) sliding connection.

2. A boiler recirculation air duct structure according to claim 1, characterized in that: the bottom ends of the two smoke inlet pipes (14) extend to the interiors of the first combustion chamber (2) and the second combustion chamber (3) respectively, and the separated ends of the two connecting pipes (15) are fixedly communicated with the two smoke inlet pipes (14) respectively.

3. A boiler recirculation air duct structure according to claim 1, characterized in that: both ends of the filter pipe (16) are communicated with the sliding groove (21), the number of the installation racks (18) and the filter screens (19) in the filter structure is two, and the mesh sizes of the two filter screens (19) are different.

4. A boiler recirculation air duct structure according to claim 1, characterized in that: handles (24) are fixedly arranged on the upper surfaces of the two mounting frames (18), and sealing gaskets which are abutted to the sliding grooves (21) are arranged on the outer surfaces of the top ends of the mounting frames (18).

5. A boiler recirculation air duct structure according to claim 1, characterized in that: the number of the pressurizers (4) and the radiant heaters (5) is two, and the two pressurizers (4) and the two radiant heaters (5) are respectively arranged in the first combustion chamber (2) and the second combustion chamber (3).

6. A boiler recirculation air duct structure according to claim 1, characterized in that: the baffle (6) are crisscross distribution, rack (7) are installed to the below of radiant heater (5), the fixed intercommunication in left side of boiler body (1) has air-supply line (8), and the fixed intercommunication in right side of boiler body (1) has out tobacco pipe (9), muffler (10) and first control valve (11) are all installed to the inside of air-supply line (8) and play tobacco pipe (9).

7. A boiler recirculation air duct structure according to claim 1, characterized in that: two feed inlets (12) are arranged at the top of the boiler body (1), and a second control valve (13) is arranged in each of the two feed inlets (12).

8. A boiler recirculation air duct structure according to claim 6, characterized in that: the air speed tester (22) is mounted on the right inner wall of the second combustion chamber (3), the output end of the air speed tester (22) is fixedly communicated with the smoke outlet pipe, the temperature sensor (23) is mounted on the inner walls of the top surfaces of the first combustion chamber (2) and the second combustion chamber (3), and the controller is fixedly mounted on the outer surface of the boiler body (1).