CN213713051U

CN213713051U - Low-nitrogen energy-saving five-duct pulverized coal burner

Info

Publication number: CN213713051U
Application number: CN202022565021.1U
Authority: CN
Inventors: 周竹锦; 周凤鸣
Original assignee: Nanjing Jian'an Machinery Manufacturing Co ltd
Current assignee: Nanjing Jian'an Machinery Manufacturing Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-07-16
Anticipated expiration: 2030-11-09

Abstract

The utility model relates to a pulverized coal burner technical field just discloses low-nitrogen energy-saving five-duct pulverized coal burner, including balanced tuber pipe nozzle, balanced tuber pipe nozzle's inside fixed mounting has outer tuber pipe nozzle. The low-nitrogen energy-saving five-air-channel pulverized coal burner is characterized in that a central air, a rotational flow air, a coal air and an axial flow air which are formed by channels are in a graded air distribution mode, continuous wind power and oxygen can be provided for the combustion of pulverized coal, the graded channel structure is designed, a nozzle is not easy to deform, the air quantity and the air speed are adjustable, the pulverized coal mixing can be accelerated, the thickness and the combustion condition of flame are changed, different working conditions are met, a larger combustion driving force can be obtained by optimizing the primary air ejection speed and the primary air pressure, the better combustion effect of the pulverized coal is achieved, the purpose of combusting low volatile coal and low calorific value coal is achieved, the pulverized coal burnout rate is improved, the thermal technology is stabilized, the purposes of high quality, high yield, energy conservation and consumption reduction are achieved, and the economic benefit is improved.

Description

Low-nitrogen energy-saving five-duct pulverized coal burner

Technical Field

The utility model relates to a pulverized coal burner technical field specifically is a low-nitrogen energy-saving five-duct pulverized coal burner.

Background

A pulverized coal burner refers to a device which can make pulverized coal fully burn in a short time and generate high-temperature eddy current, and the pulverized coal burner is divided into the following parts according to purposes: 1. a special coal powder burner for the rotary kiln; 2. a pulverized coal burner for a boiler; 3, special pulverized coal burner for asphalt mixing station.

The pulverized coal burner has a multi-stage multi-nozzle air supply guide structure with special design, can generate high-temperature vortex for pulverized coal in a short time, has the advantages of complete combustion, high heat utilization rate, smoke prevention and dust removal, high efficiency, energy conservation, improvement of working conditions, reduction of labor intensity and the like, and the conventional pulverized coal burner is insufficient in pulverized coal combustion, so that pulverized coal waste is caused, resources are consumed, the economic benefit is reduced, and the social requirement is difficult to meet, so that the low-nitrogen energy-saving five-air-channel pulverized coal burner is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a five wind channels pulverized coal burner of low-nitrogen energy-saving possesses energy-conservation, the burning fully and improves economic benefits's advantage, has solved current pulverized coal burner and has used because the burning buggy is not abundant, and then leads to the waste of buggy, has caused the consumption of resource, has reduced economic benefits's problem.

(II) technical scheme

For realizing above-mentioned energy-conservation, the burning is abundant and improve economic benefits purpose, the utility model provides a following technical scheme: low nitrogen energy-saving five wind channels pulverized coal burner, including balanced tuber pipe nozzle, the inside fixed mounting of balanced tuber pipe nozzle has outer tuber pipe nozzle, the inside fixed mounting of outer tuber pipe nozzle has coal tuber pipe nozzle, the inside fixed mounting of coal tuber pipe nozzle has interior tuber pipe nozzle, the inside fixed mounting of interior tuber pipe nozzle has the swirler, the inside fixed mounting of interior tuber pipe nozzle has the central tuber pipe nozzle that is located the left center of swirler, the inside fixed mounting of center tuber pipe nozzle has ignition oil gun nozzle, the inside fixed mounting of center tuber pipe nozzle has the pipe for the igniter of ignition oil gun nozzle rear side, the inside fixed mounting of center tuber pipe nozzle has the pipe for the flame monitoring that is located ignition oil gun nozzle bottom.

Preferably, the balance air pipe nozzle is sleeved outside the outer air pipe nozzle, a first connecting sleeve is arranged outside the outer air pipe nozzle, and a connecting groove corresponding to the connecting sleeve is formed in the balance air pipe nozzle.

Preferably, the outer air pipe nozzle is sleeved outside the coal air pipe nozzle, a first limiting ring is arranged inside the outer air pipe nozzle, and a second limiting ring positioned on the left side of the first limiting ring is arranged outside the coal air pipe nozzle.

Preferably, the coal air pipe nozzle is sleeved outside the inner air pipe nozzle, and a second connecting sleeve connected with the coal air pipe nozzle is arranged outside the inner air pipe nozzle.

Preferably, the inner air duct nozzle is sleeved outside the cyclone, and a protective sleeve positioned inside the inner air duct nozzle is arranged outside the cyclone.

Preferably, the swirler is inserted in the center air pipe nozzle, the center air pipe nozzle is sleeved outside the flame monitoring pipe, the igniter pipe and the ignition oil gun nozzle, and the left side of the center air pipe nozzle is provided with two fixing bolts extending to the inside of the protective sleeve.

(III) advantageous effects

Compared with the prior art, the utility model provides a low-nitrogen energy-saving five-duct pulverized coal burner possesses following beneficial effect:

the low-nitrogen energy-saving five-air-channel pulverized coal burner is characterized in that a central air pipe nozzle is arranged in the burner and used for protecting an ignition oil gun nozzle, the central air pipe nozzle is outwards provided with a swirler, an inner air pipe nozzle, a coal air pipe nozzle and an outer air pipe nozzle in sequence, so that a central air channel, a cyclone air channel, a coal air channel and an axial flow air mixing channel are formed from inside to outside respectively, and a graded air distribution mode of central air, cyclone air, coal air and axial flow air formed by the channels is formed in sequence, so that continuous wind power and oxygen can be provided for the combustion of pulverized coal, the graded channel is structurally designed, a nozzle is not easy to deform, the air quantity and the air speed are adjustable, pulverized coal mixing can be accelerated, the thickness and the combustion condition of flame are changed to meet different working conditions, and a larger combustion driving force can be obtained by optimizing the primary air ejection speed and primary air pressure, thereby achieving better combustion effect of the pulverized coal, realizing the purpose of combusting low volatile coal and low calorific value coal, improving the burnout rate of the pulverized coal, stabilizing the thermal technology, and achieving the purposes of high quality, high yield, energy conservation, consumption reduction and economic benefit improvement.

Drawings

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

fig. 2 is a schematic structural diagram of the present invention.

In the figure: 1 balance air pipe nozzle, 2 outer air pipe nozzle, 3 coal air pipe nozzle, 4 inner air pipe nozzle, 5 swirler, 6 center air pipe nozzle, 7 ignition oil gun nozzle, 8 igniter pipe, and 9 flame monitoring pipe.

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, the low-nitrogen energy-saving five-duct pulverized coal burner comprises a balance air duct nozzle 1, an outer air duct nozzle 2 is fixedly installed inside the balance air duct nozzle 1, the balance air duct nozzle 1 is sleeved outside the outer air duct nozzle 2, a first connecting sleeve is arranged outside the outer air duct nozzle 2, a connecting groove corresponding to the connecting sleeve is formed inside the balance air duct nozzle 1, a coal air duct nozzle 3 is fixedly installed inside the outer air duct nozzle 2, the outer air duct nozzle 2 is sleeved outside the coal air duct nozzle 3, a first limiting ring is arranged inside the outer air duct nozzle 2, a second limiting ring positioned on the left side of the first limiting ring is arranged outside the coal air duct nozzle 3, an inner air duct nozzle 4 is fixedly installed inside the coal air duct nozzle 3, the coal air duct nozzle 3 is sleeved outside the inner air duct nozzle 4, a second connecting sleeve connected with the coal air duct nozzle 3 is arranged outside the inner air duct nozzle 4, a swirler 5 is fixedly installed inside the inner air pipe nozzle 4, the inner air pipe nozzle 4 is sleeved outside the swirler 5, a third connecting sleeve connected with the inner air pipe nozzle 4 is arranged outside the swirler 5, a central air pipe nozzle 6 positioned on the left side of the swirler 5 is fixedly installed inside the inner air pipe nozzle 4, the swirler 5 is inserted inside the central air pipe nozzle 6, two fixing bolts which are arranged on the left side of the central air pipe nozzle 6 and extend into the third connecting sleeve, an ignition oil gun nozzle 7 is fixedly installed inside the central air pipe nozzle 6, an igniter tube 8 behind the ignition oil gun nozzle 7 is fixedly installed inside the central air pipe nozzle 6, a flame monitoring tube 9 positioned at the bottom of the ignition oil gun nozzle 7 is fixedly installed inside the central air pipe nozzle 6, the central air pipe nozzle 6 is sleeved on the flame monitoring tube 9, an igniter tube 8 and an igniter oil gun nozzle 7.

In conclusion, the low-nitrogen energy-saving five-air-channel pulverized coal burner is characterized in that a central air pipe nozzle 6 is arranged in the burner, the central air pipe nozzle 6 is used for protecting an ignition oil gun nozzle 7, the central air pipe nozzle 6 is outwards provided with a swirler 5, an inner air pipe nozzle 4, a coal air pipe nozzle 3 and an outer air pipe nozzle 2 in sequence, so that a central air channel, a cyclone air channel, a coal air channel and an axial flow air mixing channel are formed respectively from inside to outside, and the central air, the cyclone air, the coal air and the axial flow air formed by the channels are distributed in a grading manner in sequence, so that continuous wind power and oxygen can be provided for the combustion of pulverized coal, the coal powder combustion method has the advantages that the coal powder combustion method can obtain a large combustion driving force, so that a better combustion effect of the coal powder is achieved, the purpose of combusting low volatile coal and low calorific value coal is achieved, the coal powder burn-off rate is improved, the thermal technology is stabilized, and the purposes of high quality, high yield, energy conservation, consumption reduction and economic benefit improvement are achieved.

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. Low nitrogen energy-saving five wind channels pulverized coal burner, including balanced tuber pipe nozzle (1), its characterized in that: an outer air pipe nozzle (2) is fixedly arranged inside the balance air pipe nozzle (1), the inner part of the outer air pipe nozzle (2) is fixedly provided with a coal air pipe nozzle (3), an inner air pipe nozzle (4) is fixedly arranged inside the coal air pipe nozzle (3), a swirler (5) is fixedly arranged inside the inner air pipe nozzle (4), a central air pipe nozzle (6) positioned at the left side of the swirler (5) is fixedly arranged inside the inner air pipe nozzle (4), an ignition oil gun nozzle (7) is fixedly arranged in the central air pipe nozzle (6), an igniter tube (8) at the rear side of the ignition oil gun nozzle (7) is fixedly arranged in the central air pipe nozzle (6), and a flame monitoring pipe (9) positioned at the bottom of the ignition oil gun nozzle (7) is fixedly arranged in the central air pipe nozzle (6).

2. The low-nitrogen energy-saving five-duct pulverized coal burner of claim 1, characterized in that: the outside at outer tuber pipe nozzle (2) is cup jointed to what balanced tuber pipe nozzle (1), the outside of outer tuber pipe nozzle (2) is provided with first adapter sleeve, and the inside of balanced tuber pipe nozzle (1) is seted up with the connecting groove that the adapter sleeve corresponds.

3. The low-nitrogen energy-saving five-duct pulverized coal burner of claim 1, characterized in that: the outer air pipe nozzle (2) is sleeved outside the coal air pipe nozzle (3), a first limiting ring is arranged inside the outer air pipe nozzle (2), and a second limiting ring located on the left side of the first limiting ring is arranged outside the coal air pipe nozzle (3).

4. The low-nitrogen energy-saving five-duct pulverized coal burner of claim 1, characterized in that: the coal air pipe nozzle (3) is sleeved outside the inner air pipe nozzle (4), and a second connecting sleeve connected with the coal air pipe nozzle (3) is arranged outside the inner air pipe nozzle (4).

5. The low-nitrogen energy-saving five-duct pulverized coal burner of claim 1, characterized in that: the inner air pipe nozzle (4) is sleeved outside the swirler (5), and a protective sleeve positioned inside the inner air pipe nozzle (4) is arranged outside the swirler (5).

6. The low-nitrogen energy-saving five-duct pulverized coal burner of claim 5, characterized in that: swirler (5) are pegged graft in the inside of central tuber pipe nozzle (6), central tuber pipe nozzle (6) cup joint the outside of using pipe (9), pipe (8) for the igniter and ignition oil gun nozzle (7) at flame monitoring, the left side of central tuber pipe nozzle (6) is provided with quantity and just extends to the inside fixing bolt of protective sheath for two.