CN216047797U

CN216047797U - Flue gas waste heat recovery device for thermal power plant

Info

Publication number: CN216047797U
Application number: CN202122113402.0U
Authority: CN
Inventors: 周国营; 闫国凯
Original assignee: Henan China Power Investment Huaxin Power Engineering Co ltd
Current assignee: Huaxin Holdings Henan Co Ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-03-15
Anticipated expiration: 2031-09-03

Abstract

The utility model provides a flue gas waste heat recovery device based on a thermal power plant, which belongs to the technical field of thermal power generation and comprises an air inlet pipe, wherein one end of the air inlet pipe is fixedly connected with a box body, one side of the box body is communicated with a filter through the air inlet pipe, one side of the filter is fixedly connected with a furnace body, the inside of the furnace body is fixedly connected with a communicating pipe, one end of the communicating pipe penetrates through the furnace body and is fixedly connected with an air outlet pipe, a filter screen is fixedly connected inside the box body, sliding grooves are formed in two sides inside the box body, sliding blocks are movably connected inside the sliding grooves, scraping plates are fixedly connected between the sliding blocks, and a fixing frame is fixedly connected to the tops of the sliding blocks. This based on flue gas waste heat recovery device for thermal power plant through setting up the clear filter screen structure of being convenient for, after the filter screen blocks up, need not dismantle the filter screen alright clean it, easy operation, labour saving and time saving has improved the clean efficiency of filter screen.

Description

Flue gas waste heat recovery device for thermal power plant

Technical Field

The utility model belongs to the technical field of thermal power generation, and particularly relates to a flue gas waste heat recovery device for a thermal power plant.

Background

Thermal power generation is a main power generation mode in China, and a power station boiler is used as one of three main devices of a thermal power station and is developed along with the development of the thermal power industry in China. When environmental protection and energy conservation become important directions for structure adjustment of the Chinese power industry, the thermal power industry actively promotes the optimization and upgrade of the industrial structure under the guidance of the policy of 'high pressure and low pressure', closes a large number of small thermal power generating units with low energy efficiency and heavy pollution, and accelerates the update of the domestic thermal power equipment to a great extent. In the thermal power generation process, the flue gas discharged by combustion has larger heat energy, and needs to be recycled so as to achieve the maximum economic benefit.

The inside that the pipe directly let in the furnace body will discharge fume usually to current waste heat recovery device, utilizes the heat of flue gas to heat the inside water of furnace body, and the flue gas can filter before letting in the furnace body, because the flue gas is inside to contain more dust, blocks up the filter screen easily, very big influence the throughput of flue gas, the filter screen blocks up the back and is not convenient for clean, the operation is wasted time and energy, is unfavorable for using widely.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flue gas waste heat recovery device for a thermal power plant, and aims to solve the problem that a filter screen of the flue gas waste heat recovery device for the thermal power plant is blocked and is inconvenient to clean in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a flue gas waste heat recovery device for thermal power plant, includes the intake pipe, the one end fixedly connected with box of intake pipe, there is the filter one side of box through the intake pipe intercommunication, one side fixedly connected with furnace body of filter, the inside fixedly connected with communicating pipe of furnace body, the one end of communicating pipe runs through furnace body and fixedly connected with outlet duct, the inside fixedly connected with filter screen of box, the spout has all been seted up to the inside both sides of box, the inside swing joint of spout has the slider, fixedly connected with scraper blade between the slider, the top fixedly connected with mount of slider, top one side of box is rotated and is connected with the apron, the one end of apron is equipped with the snap close piece.

Preferably, the bottom of one side of the interior of the box body, which is close to the scraper, is an inclined plane, and a sealing plate is arranged on one side of the box body.

In a preferred aspect of the present invention, the communication pipe has a spiral shape.

Preferably, the air outlet pipe is internally provided with a temperature sensor, and the top of the temperature sensor is fixedly connected with a controller.

Preferably, the bottom of one end of the air outlet pipe is communicated with a branching pipe, and the top of the branching pipe is provided with an electromagnetic valve.

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

1. this based on flue gas waste heat recovery device for thermal power plant through setting up the clear filter screen structure of being convenient for, after the filter screen blocks up, need not dismantle the filter screen alright clean it, easy operation, labour saving and time saving has improved the clean efficiency of filter screen.

2. This based on flue gas waste heat recovery device for thermal power plant, through the cooperation between temperature sensor, controller, shunt pipe, controller and the solenoid valve, can carry out real-time detection to outlet duct exhaust gas's temperature, when outlet duct exhaust temperature is higher, the solenoid valve at shunt pipe top can be opened to the controller, makes gas enter into another furnace body, makes the waste heat of flue gas fully retrieved, improves the utilization ratio of the waste heat of flue gas, is favorable to using widely.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the internal structure of the furnace body according to the present invention;

FIG. 3 is a schematic view of the structure of the case of the present invention;

fig. 4 is an enlarged view of the structure at a in fig. 3 according to the present invention.

In the figure: 1. an air inlet pipe; 2. a furnace body; 3. an air outlet pipe; 4. a box body; 5. a fastener; 6. a cover plate; 7. a sealing plate; 8. a filter; 9. a shunt pipe; 10. an electromagnetic valve; 11. a temperature sensor; 12. a controller; 13. a communicating pipe; 14. a fixed mount; 15. a chute; 16. filtering with a screen; 17. a squeegee; 18. a slide block.

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.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a flue gas waste heat recovery device based on thermal power plant, including intake pipe 1, the one end fixedly connected with box 4 of intake pipe 1, there is filter 8 one side of box 4 through intake pipe 1 intercommunication, one side fixedly connected with furnace body 2 of filter 8, the inside fixedly connected with communicating pipe 13 of furnace body 2, the one end of communicating pipe 13 runs through furnace body 2 and fixedly connected with outlet duct 3, the inside fixedly connected with filter screen 16 of box 4, spout 15 has all been seted up to the inside both sides of box 4, spout 15's inside swing joint has slider 18, fixedly connected with scraper blade 17 between the slider 18, slider 18's top fixedly connected with mount 14, top one side of box 4 is rotated and is connected with apron 6, the one end of apron 6 is equipped with snap close piece 5.

In the embodiment of the utility model, the flue gas enters the box body 4 through the air inlet pipe 1, large particles such as dust in the flue gas are pre-filtered by the filter screen 16, then the flue gas is further filtered by the filter 8, the filtered flue gas moves in the furnace body 2 through the communicating pipe 13, so that the temperature of water in the furnace body 2 is raised, and finally the flue gas is discharged through the air outlet pipe 3, when the filter screen 16 needs to be cleaned, the fastener 5 is opened, the cover plate 6 is rotated, the cover plate 6 is opened, the fixing frame 14 is pulled, the fixing frame 14 enables the scraper 17 to move along the surface of the filter screen 16 by driving the sliding block 18, so that the dust attached to the surface of the filter screen 16 falls off, the scraper 17 and the cover plate 6 are reset afterwards, the fastener 5 is utilized to enable the scraper 17 to be fixed with the box body 4, the filter screen 16 can continuously work, the operation is simple and convenient, and the cleaning efficiency of the filter screen 16 is improved.

Specifically, the bottom of one side of the interior of the box body 4 close to the scraper 17 is an inclined plane, and a sealing plate 7 is arranged on one side of the box body 4.

In this embodiment: in the cleaning process, the sealing plate 7 is opened, and the dust falling off from the surface of the filter screen 16 can be discharged from the box body 4 along the inclined plane at the bottom of the box body 4, so that the falling dust can be conveniently collected, and the use is more convenient.

Specifically, communication pipe 13 has a spiral shape.

In this embodiment: the communicating pipe 13 is set to rotate spirally, so that the contact time of the flue gas and the water in the furnace body 2 is prolonged, and the waste heat of the flue gas is fully recovered.

Specifically, the inside of outlet duct 3 is equipped with temperature sensor 11, and temperature sensor 11's top fixedly connected with controller 12.

In this embodiment: utilize temperature sensor 11 to carry out real-time detection to the temperature of outlet duct 3, when the temperature of the inside water of furnace body 2 is higher and can not be completely with the waste heat absorption of flue gas, temperature sensor 11 can be with information transfer to controller 12 to make the counter-measure.

Specifically, the bottom of one end of the air outlet pipe 3 is communicated with a branching pipe 9, and the top of the branching pipe 9 is provided with an electromagnetic valve 10.

In this embodiment: through opening and shutting of controller 12 control solenoid valve 10, when the surplus temperature of flue gas was too high, the one end of outlet duct 3 would seal, and solenoid valve 10 can be opened, makes the flue gas enter into branch way pipe 9, utilizes branch way pipe 9 with its leading-in inside to another water heater, is convenient for fully carry out recycle to its heat.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a based on flue gas waste heat recovery device for thermal power plant, includes intake pipe (1), its characterized in that: one end of the air inlet pipe (1) is fixedly connected with a box body (4), one side of the box body (4) is communicated with a filter (8) through the air inlet pipe (1), one side of the filter (8) is fixedly connected with a furnace body (2), the interior of the furnace body (2) is fixedly connected with a communicating pipe (13), one end of the communicating pipe (13) penetrates through the furnace body (2) and is fixedly connected with an air outlet pipe (3), a filter screen (16) is fixedly connected inside the box body (4), sliding grooves (15) are respectively arranged on two sides inside the box body (4), the inside of the sliding chute (15) is movably connected with sliding blocks (18), a scraping plate (17) is fixedly connected between the sliding blocks (18), the top fixedly connected with mount (14) of slider (18), top one side of box (4) is rotated and is connected with apron (6), the one end of apron (6) is equipped with hasp piece (5).

2. The flue gas waste heat recovery device for the thermal power plant as claimed in claim 1, wherein: the bottom of one side of the interior of the box body (4) close to the scraper (17) is an inclined plane, and a sealing plate (7) is arranged on one side of the box body (4).

3. The flue gas waste heat recovery device for the thermal power plant as claimed in claim 1, wherein: the communicating pipe (13) is spiral.

4. The flue gas waste heat recovery device for the thermal power plant as claimed in claim 1, wherein: the inside of outlet duct (3) is equipped with temperature sensor (11), the top fixedly connected with controller (12) of temperature sensor (11).

5. The flue gas waste heat recovery device for the thermal power plant according to claim 4, characterized in that: the bottom of one end of the air outlet pipe (3) is communicated with a branch pipe (9), and the top of the branch pipe (9) is provided with an electromagnetic valve (10).