CN213630503U

CN213630503U - Boiler overgrate air preheater

Info

Publication number: CN213630503U
Application number: CN202022145049.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Renhua Huayue Coal Gangue Power Co ltd
Current assignee: Renhua Huayue Coal Gangue Power Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-07-06
Anticipated expiration: 2030-09-27

Abstract

The utility model relates to an air heater technical field just discloses a boiler overgrate air heater, including the boiler body, the top fixed mounting of boiler body has the extension pipe. This boiler overgrate air preheater, through setting up the primary pipe, intermediate level pipe and end level pipe, start behind the feeding fan, gaseous inflow primary pipe, in intermediate level pipe and the end level pipe, because of primary pipe and intermediate level pipe are the wave, the end level pipe is the spiral, can increase gaseous at the primary pipe, the dwell time in intermediate level pipe and the end level pipe, thereby fully preheated, make preheating effect better, after the delivery tube, spark shower nozzle can fully be burnt to preheating even gaseous, the utilization ratio of burning has been improved, heated once more through three over heater, thereby make the gaseous of flowing into in the connecting pipe can fully with the primary pipe, the gaseous of intermediate level pipe and end level pipe preheats, it is poor to have solved preheating effect, gaseous can not fully by the problem of burning.

Description

Boiler overgrate air preheater

Technical Field

The utility model relates to an air heater technical field specifically is a boiler overgrate air heater.

Background

The air preheater is a heating surface for preheating the air before entering the boiler to a certain temperature by the smoke in the flue at the tail part of the boiler through the internal radiating fins, and is a device for improving the heat exchange performance of the boiler and reducing the energy consumption.

To the boiler overgrate air heater who uses at present, current boiler overgrate air heater preheats inhomogeneous, can not fully preheat to lead to the gas that enters into in the boiler can not fully by the burning, it is very inconvenient to use, so proposed a boiler overgrate air heater and solved the problem that above-mentioned provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a boiler overgrate air heater possesses preheating effectually, gaseous advantage that can fully be burnt, has solved preheating that the effect is poor, gaseous can not fully be burnt problem.

(II) technical scheme

In order to realize the above-mentioned purpose that preheats effectually, gas can fully be burnt, the utility model provides a following technical scheme: a boiler overgrate air preheater comprises a boiler body, wherein an extension pipe is fixedly arranged at the top of the boiler body, a connecting pipe is fixedly arranged at the bottom of the extension pipe, an outlet pipe is fixedly arranged at the left side of the connecting pipe, a feeding fan is fixedly arranged at the right side of the outlet pipe, a burner is fixedly arranged at the right side of the boiler body, a holding net is fixedly arranged at the front side of the inner wall of the boiler body, an overheater is fixedly arranged at the inner wall of the extension pipe, a supporting column is fixedly arranged at the left side of the inner wall of the connecting pipe, a final pipe is fixedly arranged at the right side of the supporting column, a middle pipe is fixedly arranged at the left side of the inner wall of the connecting pipe and positioned at the top of the final pipe, a primary pipe is fixedly arranged at the left side of the inner wall of the connecting pipe and positioned at the top of the middle pipe, the, and an input pipe is fixedly arranged on the left side of the final-stage pipe.

Preferably, the right side fixed mounting of secondary pipe has the output tube, the equal fixed mounting in left side of secondary pipe and primary pipe has the pipe, and two pipes all pass through intercommunication case fixed connection with output tube and input tube, the intercommunication case passes through cushion and connecting pipe fixed connection, and the left intercommunication case of two pipes passes through standpipe fixed connection.

Preferably, the outer surfaces of the vertical pipe and the input pipe are both fixedly provided with a closing valve, and the shapes of the intermediate pipe and the primary pipe are both wave-shaped.

Preferably, the last-stage pipe is spiral, the last-stage pipe is made of a corrosion-resistant steel pipe, and the delivery pipe is fixedly connected with the connecting pipe.

Preferably, the number of the superheaters is three, limestone is fixedly mounted on the outer surface of the containing net, an ash bucket is fixedly mounted at the bottom of the boiler body, and a switch valve is fixedly mounted on the outer surface of the ash bucket.

Preferably, a spark nozzle is fixedly installed on the right side of the inner wall of the boiler body, and the spark nozzle is electrically connected with the burner.

(III) advantageous effects

Compared with the prior art, the utility model provides a boiler overgrate air heater possesses following beneficial effect:

this boiler overgrate air preheater, through setting up the primary pipe, intermediate level pipe and end level pipe, start behind the feeding fan, gaseous inflow primary pipe, in intermediate level pipe and the end level pipe, because of primary pipe and intermediate level pipe are the wave, the end level pipe is the spiral, can increase gaseous at the primary pipe, the dwell time in intermediate level pipe and the end level pipe, thereby fully preheated, make preheating effect better, after the delivery tube, spark shower nozzle can fully be burnt to preheating even gaseous, the utilization ratio of burning has been improved, heated once more through three over heater, thereby make the gaseous of flowing into in the connecting pipe can fully with the primary pipe, the gaseous of intermediate level pipe and end level pipe preheats, it is poor to have solved preheating effect, gaseous can not fully by the problem of burning.

Drawings

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

fig. 2 is a schematic view of the front side of the structure of the present invention.

In the figure: 1 boiler body, 2 delivery pipes, 3 feeding fans, 4 inlet pipes, 5 outlet pipes, 6 struts, 7 final-stage pipes, 8 input pipes, 9 intermediate-stage pipes, 10 primary-stage pipes, 11 connecting pipes, 12 extension pipes, 13 superheaters, 14 holding nets and 15 burners.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a boiler secondary air preheater comprises a boiler body 1, a spark nozzle is fixedly installed on the right side of the inner wall of the boiler body 1 and electrically connected with a burner 15, an extension pipe 12 is fixedly installed on the top of the boiler body 1, a connecting pipe 11 is fixedly installed on the bottom of the extension pipe 12, an air outlet pipe 5 is fixedly installed on the left side of the connecting pipe 11, a feeding fan 3 is fixedly installed on the right side of the air outlet pipe 5, a burner 15 is fixedly installed on the right side of the boiler body 1, a containing net 14 is fixedly installed on the front side of the inner wall of the boiler body 1, superheaters 13 are fixedly installed on the inner wall of the extension pipe 12, three superheaters 13 are provided, limestone is fixedly installed on the outer surface of the containing net 14, an ash bucket is fixedly installed on the bottom of the boiler body 1, a switch valve is fixedly installed on, the right side of the pillar 6 is fixedly provided with a final-stage pipe 7, the final-stage pipe 7 is spiral, the material of the final-stage pipe 7 is a corrosion-resistant steel pipe, the delivery pipe 2 is fixedly connected with a connecting pipe 11, the inner wall left side of the connecting pipe 11 is fixedly provided with a middle-stage pipe 9 positioned at the top of the final-stage pipe 7, the right side of the middle-stage pipe 9 is fixedly provided with an output pipe, the left sides of the middle-stage pipe 9 and the primary-stage pipe 10 are fixedly provided with guide pipes, the two guide pipes are fixedly connected with the output pipe and the input pipe 8 through communicating boxes, the communicating boxes are fixedly connected with the connecting pipe 11 through cushion blocks, the communicating boxes at the left sides of the two guide pipes are fixedly connected through vertical pipes, the outer surfaces of the vertical pipes and the input pipe 8 are fixedly provided with isolating valves, the shapes of the middle-stage pipe 9 and the primary-stage pipe 10 are both wave-shaped, the primary-stage pipe 10 is, the feeding fan 3 is fixedly connected with the last-stage pipe 7 through the leading-in pipe 4, and the input pipe 8 is fixedly arranged on the left side of the last-stage pipe 7.

To sum up, this boiler overgrate air preheater, through setting up primary pipe 10, medium level pipe 9 and final stage pipe 7, start feeding fan 3 back, gaseous inflow is in primary pipe 10, in medium level pipe 9 and the final stage pipe 7, because of primary pipe 10 and medium level pipe 9 are the wave, final stage pipe 7 is the spiral, can increase gaseous dwell time in primary pipe 10, in medium level pipe 9 and final stage pipe 7, thereby fully preheated, make preheating effect better, after eduction tube 2, the spark shower nozzle can be fully burnt to preheating even gas, the utilization ratio of burning has been improved, be heated once more through three over heater 13, thereby make the gas that flows into in connecting pipe 11 can fully preheat the gas in primary pipe 10, medium level pipe 9 and final stage pipe 7, the problem that preheating effect is poor, gas can not fully burnt has been solved.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a boiler overgrate air heater, includes boiler body (1), its characterized in that: the boiler comprises a boiler body (1), an extension pipe (12) is fixedly mounted at the top of the boiler body (1), a connecting pipe (11) is fixedly mounted at the bottom of the extension pipe (12), an outlet pipe (5) is fixedly mounted at the left side of the connecting pipe (11), a feeding fan (3) is fixedly mounted at the right side of the outlet pipe (5), a burner (15) is fixedly mounted at the right side of the boiler body (1), a holding net (14) is fixedly mounted at the front side of the inner wall of the boiler body (1), a superheater (13) is fixedly mounted at the inner wall of the extension pipe (12), a strut (6) is fixedly mounted at the left side of the inner wall of the connecting pipe (11), a final pipe (7) is fixedly mounted at the left side of the inner wall of the strut (6), a middle pipe (9) is fixedly mounted at the top of the final pipe (7), a primary pipe (10) is fixedly mounted at the left side of the inner wall of the connecting, primary pipe (10) are through eduction tube (2) and boiler body (1) fixed connection, inlet fan (3) are through leading-in pipe (4) and last level pipe (7) fixed connection, the left side fixed mounting of last level pipe (7) has input tube (8).

2. A boiler overfire air preheater as set forth in claim 1, wherein: the right side fixed mounting of secondary pipe (9) has the output tube, the equal fixed mounting in left side of secondary pipe (9) and primary pipe (10) has the pipe, and two pipes all pass through intercommunication case fixed connection with output tube and input tube (8), the intercommunication case passes through cushion and connecting pipe (11) fixed connection, and the left intercommunication case of two pipes passes through standpipe fixed connection.

3. A boiler overfire air preheater as set forth in claim 2, wherein: the outer surfaces of the vertical pipe and the input pipe (8) are fixedly provided with isolating valves, and the shapes of the intermediate pipe (9) and the primary pipe (10) are both wave-shaped.

4. A boiler overfire air preheater as set forth in claim 1, wherein: the shape of end level pipe (7) is the spiral, and the material of end level pipe (7) is corrosion-resistant steel pipe, delivery pipe (2) and connecting pipe (11) fixed connection.

5. A boiler overfire air preheater as set forth in claim 1, wherein: the boiler is characterized in that the number of the superheaters (13) is three, limestone is fixedly arranged on the outer surface of the containing net (14), an ash bucket is fixedly arranged at the bottom of the boiler body (1), and a switch valve is fixedly arranged on the outer surface of the ash bucket.

6. A boiler overfire air preheater as set forth in claim 1, wherein: the boiler is characterized in that a spark nozzle is fixedly arranged on the right side of the inner wall of the boiler body (1) and is electrically connected with the combustor (15).