CN212132482U

CN212132482U - Boiler flue device

Info

Publication number: CN212132482U
Application number: CN202020618149.7U
Authority: CN
Inventors: 贾瑞龙; 马鹏飞; 王立新; 张选; 王广慧
Original assignee: Shenhua Zhungeer Energy Co Ltd
Current assignee: Shenhua Zhungeer Energy Co Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-12-11
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a boiler flue device, including air heater, dust remover, flue subassembly, first expansion joint and second expansion joint, the flue subassembly is including slope flue and straight section flue, air heater passes through first expansion joint with the one end intercommunication of slope flue, the other end of slope flue with the one end intercommunication of straight section flue, the other end of straight section flue passes through the second expansion joint with the dust remover intercommunication. Implement the utility model discloses, through setting up slope flue and straight section flue, make air heater pass through slope flue and straight section flue and dust remover intercommunication, reduce the flue bend, reduce the flue resistance, reduce the energy consumption.

Description

Boiler flue device

Technical Field

The utility model relates to a power boiler technical field especially relates to a boiler flue device.

Background

During the power generation process of a coal-fired power generating unit in a thermal power plant, a large amount of flue gas can be generated due to the combustion of fuel. Flue gas generated by unit combustion can sequentially pass through flue gas treatment equipment such as desulfurization, dust removal and desulfurization under the drive of equipment such as a draught fan and a blower, and is discharged to the atmosphere through a chimney after meeting the requirements of the atmospheric pollutant emission standard of a thermal power plant formulated by the international environmental protection department.

The flue gas duct of the thermal power plant is used for conveying media such as flue gas, cold air and the like, and the design optimization level of the flue gas duct not only influences the resistance of a flue system of the thermal power plant, but also influences the running state of each device directly connected with the flue system. At present, the flue of the existing flue system is compact in arrangement, has many sharp bends, has too many supports inside the flue, and has too many gas flowing vortexes in the flue, so that the resistance of the flue system is larger, the flue gas at the inlet of the bag-type dust collector has an unbalanced phenomenon, and the production energy consumption index is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art's flue system resistance is big, the energy consumption is high, provide a boiler flue device.

The technical scheme of the utility model a boiler flue device is provided, including air heater, dust remover, flue subassembly, first expansion joint and second expansion joint, the flue subassembly is including slope flue and straight section flue, air heater passes through first expansion joint with the one end intercommunication of slope flue, the other end of slope flue with the one end intercommunication of straight section flue, the other end of straight section flue passes through the second expansion joint with the dust remover intercommunication.

Further, the flue subassembly still includes the climbing flue, the one end of climbing flue with the slope flue intercommunication, the other end of climbing flue with the one end intercommunication of straight section flue.

Further, still include the pre-heater connecting pipe, air heater is including relative first side pre-heater and the second side pre-heater that sets up, first side pre-heater with the second side pre-heater is close to first expansion joint department passes through the pre-heater connecting pipe intercommunication, first side pre-heater loops through first expansion joint the flue subassembly with the second expansion joint with the dust remover intercommunication, second side pre-heater loops through first expansion joint the flue subassembly with the second expansion joint with the dust remover intercommunication.

Further, a first ash hopper is arranged at the bottom of the first side preheater.

Further, a second ash hopper is arranged at the bottom of the second side preheater.

Furthermore, the cross-sectional areas of the inclined flue, the climbing flue and the straight section flue are equal.

Furthermore, the inclination angle of the inclined flue is 30-60 degrees.

Furthermore, the climbing angle of the climbing flue is 10-30 degrees.

Furthermore, the material of the inclined flue is steel.

Furthermore, the material of the climbing flue is steel.

After adopting above-mentioned technical scheme, have following beneficial effect: through setting up slope flue and straight section flue, make air heater pass through slope flue and straight section flue and dust remover intercommunication, reduce the flue bend, reduce the flue resistance, reduce the energy consumption.

Drawings

The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:

fig. 1 is a schematic structural diagram of a boiler flue device according to an embodiment of the present invention;

fig. 2 is a top view of fig. 1.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

As shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a boiler flue device provided by an embodiment of the present invention, fig. 2 is a top view of fig. 1, the boiler flue device includes an air preheater 11, a dust remover 12, a flue assembly 13, a first expansion joint 14 and a second expansion joint 15, the flue assembly 13 includes an inclined flue 131 and a straight flue 132, the air preheater 11 is communicated with one end of the inclined flue 131 through the first expansion joint 14, the other end of the inclined flue 131 is communicated with one end of the straight flue 132, and the other end of the straight flue 132 is communicated with the dust remover 12 through the second expansion joint 15.

The utility model discloses a boiler flue device mainly comprises air heater 11, dust remover 12, flue subassembly 13, first expansion joint 14 and second expansion joint 15.

The air preheater 11 is used for preheating the gas, and has substantially the same structure and function as the conventional air preheater, and thus, will not be described in detail herein.

The dust collector 12 is a bag-type dust collector, and the structure and function thereof are the same as those of the existing dust collector, and therefore, the detailed description thereof is omitted.

One end of the first expansion joint 14 is communicated with the air preheater 11, and the other end of the second expansion joint 14 is communicated with the inclined flue 131, so that the expansion amount after the flue is heated is met.

One end of the second expansion joint 15 is communicated with the straight section flue 132, and the other end of the second expansion joint 15 is communicated with the dust remover, so that the expansion amount after the flue is heated is met.

The flue gas in the boiler sequentially passes through the air preheater 11, the first expansion joint 14, the inclined flue 131, the straight section flue 132 and the second expansion joint 15 and enters the dust remover 12, and the flow process of the flue gas in the flue device is completed. It should be noted that the order of the inclined flue 131 and the straight flue 132 may be changed, that is, the air preheater 11 is communicated with one end of the straight flue 132 through the first expansion joint 14, the other end of the straight flue 132 is communicated with one end of the inclined flue 131, and the other end of the inclined flue 131 is communicated with the dust collector 12 through the second expansion joint 15, which can achieve the same effect.

Preferably, in order to reduce the internal swirl and further reduce the resistance, the inner walls of the inclined flues 131 and the straight flues 132 are smooth structures.

The utility model provides a boiler flue device through setting up slope flue and straight section flue, makes air heater pass through slope flue and straight section flue and dust remover intercommunication, reduces the flue bend, reduces the flue resistance, reduces the energy consumption.

Optionally, the flue assembly 13 further includes a climbing flue 133, one end of the climbing flue 133 is communicated with the inclined flue 131, and the other end of the climbing flue 133 is communicated with one end of the straight flue 132, so as to adapt to an environment requiring more bends, further reduce flue bends, reduce flue resistance, and reduce energy consumption.

Optionally, as shown in fig. 2, a preheater connecting pipe 16 is further included, the air preheater 11 includes a first side preheater 111 and a second side preheater 112 which are oppositely arranged, the first side preheater 111 and the second side preheater 112 are communicated through the preheater connecting pipe 16 near the first expansion joint 14, the first side preheater 111 is communicated with the dust remover 12 through the first expansion joint 14, the flue assembly 13 and the second expansion joint 15 in sequence, and the second side preheater 112 is communicated with the dust remover 12 through the first expansion joint 14, the flue assembly 13 and the second expansion joint 15 in sequence.

Flue is connected 16 and is used for communicating first side preheater 111 and second side preheater 112, makes the flue gas in first side preheater 111 and the second side preheater 112 circulate each other, and flue gas flow is different in first side preheater 111 and the second side preheater 112, makes the flue gas flow of first side preheater 111 and second side preheater 112 balanced, and the flow is steady, avoids assaulting flue subassembly 13, improves life.

Optionally, the bottom of the first side preheater 111 is provided with a first ash hopper (not shown).

The first ash bucket is used for discharging the accumulated ash at the bottom of the first side preheater 111, so that the weight of the first side preheater 111 is reduced, and the service life is prolonged.

Optionally, the bottom of the second side preheater 112 is provided with a second hopper 17.

The second hopper 17 is used for discharging the accumulated dust at the bottom of the second side preheater 112, reducing the weight of the second side preheater 112 and prolonging the service life.

Optionally, the cross-sectional areas of the inclined flue 131, the climbing flue 133 and the straight section flue 132 are equal, so that the flow rates of the flue gas in the inclined flue 131, the climbing flue 133 and the straight section flue 132 are kept consistent, the phenomena of flue impact and dust deposition are reduced, and the service life is prolonged.

Optionally, to further reduce drag and reduce energy consumption, the inclined flue 131 is inclined at an angle of 30-60 degrees.

Optionally, in order to further reduce the resistance and reduce the energy consumption, the climbing angle of the climbing flue 133 is 10 degrees to 30 degrees.

Optionally, the inclined flue 131 is made of steel, and the thickness of the inclined flue 131 is about 5 mm, so that the structural strength is enhanced, and the connection stability is improved.

Optionally, the material of the climbing flue 133 is steel, and the thickness of the climbing flue 133 is about 5 mm, so that the structural strength is enhanced, and the connection stability is improved.

To sum up, the utility model provides a boiler flue device through setting up slope flue and straight section flue, makes air heater pass through slope flue and straight section flue and dust remover intercommunication, reduces the flue bend, reduces the flue resistance, reduces the energy consumption.

What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims

1. The utility model provides a boiler flue device, its characterized in that includes air heater, dust remover, flue subassembly, first expansion joint and second expansion joint, the flue subassembly includes slope flue and straight section flue, air heater passes through first expansion joint with the one end intercommunication of slope flue, the other end of slope flue with the one end intercommunication of straight section flue, the other end of straight section flue passes through the second expansion joint with the dust remover intercommunication.

2. A boiler flue apparatus as claimed in claim 1, wherein said flue assembly further comprises a climbing flue, one end of said climbing flue being in communication with said inclined flue, the other end of said climbing flue being in communication with one end of said straight section flue.

3. The boiler flue device according to claim 2, further comprising a preheater connecting pipe, wherein the air preheater comprises a first side preheater and a second side preheater which are oppositely arranged, the first side preheater and the second side preheater are communicated through the preheater connecting pipe at positions close to the first expansion joint, the first side preheater is communicated with the dust remover sequentially through the first expansion joint, the flue assembly and the second expansion joint, and the second side preheater is communicated with the dust remover sequentially through the first expansion joint, the flue assembly and the second expansion joint.

4. A boiler flue arrangement according to claim 3, characterized in that the bottom of the first side preheater is provided with a first ash hopper.

5. A boiler flue arrangement according to claim 3 or 4, characterized in that the bottom of the second side preheater is provided with a second ash hopper.

6. A boiler flue arrangement according to claim 2, characterized in that the cross-sectional areas of the inclined flue, the climbing flue and the straight section flue are equal.

7. A boiler flue arrangement according to claim 2, characterized in that the angle of inclination of the inclined flue is 30-60 degrees.

8. A boiler flue device according to claim 2, characterized in that the climbing flue has a climbing angle of 10-30 degrees.

9. The boiler flue device according to claim 7, wherein the inclined flue is made of steel.

10. A boiler flue system according to claim 9, wherein the ramp flue is made of steel.