阅读说明：本技术 一种除尘管道用新型抗磨损弯头结构 (Novel wear-resistant elbow structure for dust removal pipeline ) 是由 孟令国 吴立奇 陈云 刘晓超 朱俊 张静 肖红飞 吴红芳 于 2021-08-09 设计创作，主要内容包括：本发明公开了一种除尘管道用新型抗磨损弯头结构,涉及管道系统技术领域。该除尘管道用新型抗磨损弯头结构,包括90°弯头,所述90°弯头一端开口朝左,另一端开口朝上,所述90°弯头弯曲部位内腔的顶部和底部均设置有内堆焊耐磨合金。该除尘管道用新型抗磨损弯头结构,对环保设施的除尘管道外部增加弯头背包,弯头背包进行堆焊耐磨合金和填充耐磨浇注料,除尘管道内部设置耐磨导流板,弯头内部及耐磨导流板迎风面进行堆焊耐磨合金等方式,有效减少局部涡流、增强除尘管道弯头耐磨强度、提高弯头使用效果及导流冷却风风向均匀分布,延长了除尘管道弯头出现磨损漏风的使用周期。(The invention discloses a novel anti-abrasion elbow structure for a dust removal pipeline, and relates to the technical field of pipeline systems. This dust removal pipeline is with novel elbow structure of nai wear, including 90 elbows, 90 elbows one end openings face a left side, and other end opening faces up, the top and the bottom of the crooked position inner chamber of 90 elbows all are provided with interior build-up welding abrasion-resistant alloy. This dust removal pipeline is with novel elbow structure that resistance to wears, to the outside elbow knapsack that increases of dust removal pipeline of environmental protection facility, the elbow knapsack carries out build-up welding abrasive alloy and fills wear-resisting castable, the inside wear-resisting guide plate that sets up of dust removal pipeline, modes such as the inside and wear-resisting guide plate windward side of elbow carries out build-up welding abrasive alloy, effectively reduce local vortex, reinforcing dust removal pipeline elbow abrasion strength, improve elbow result of use and water conservancy diversion cooling air direction evenly distributed, the life cycle that the wearing and tearing leaked has appeared in the dust removal pipeline elbow has been prolonged.)

1. The utility model provides a dust removal pipeline is with novel elbow structure of resistance to wears, includes 90 elbow (1), 90 elbow (1) one end opening is towards a left side, and other end opening is up, its characterized in that: the top and the bottom of 90 elbow (1) bending position inner chamber all are provided with interior build-up welding abrasion-resistant alloy (3), and interior build-up welding abrasion-resistant alloy (3) that is located the below relatively just is located the inner chamber slope of 90 elbow (1) and is provided with wear-resistant guide plate (5), wear-resistant guide plate (5) are 15 to 25 for the inclination of 90 elbow (1) inner wall, wear-resistant guide plate (5) length is 100mm, and the width is 50mm, thickness is 10mm, interior build-up welding abrasion-resistant alloy (3) thickness more than or equal to 6mm for strengthen the abrasion resistance and the life of 90 elbow (1), wear-resistant guide plate (5) are close to 90 elbow (1) left end open-ended one side and are provided with build-up welding wearing layer (6), the thickness more than or equal to 3mm of build-up welding abrasion-resistant layer (6), 90 elbow (1) bending part's the outside is provided with castable wear-resistant (4), one side that 90 elbows (1) were kept away from in wear-resistant castable (4) is provided with outer build-up welding abrasion-resistant alloy (8), one side rigidity full weld that 90 elbows (1) were kept away from in outer build-up welding abrasion-resistant alloy (8) is provided with steel elbow knapsack (2).

2. The novel abrasion-resistant elbow structure for the dust removal pipeline as claimed in claim 1, wherein: when the 90-degree elbow (1) is used, the port relatively positioned at the lower left position is an air inlet end, the port relatively positioned at the upper right position is an air outlet end, and the direction of air flow in the 90-degree elbow (1) flows from the air inlet end to the air outlet end.

3. The novel abrasion-resistant elbow structure for the dust removal pipeline as claimed in claim 1, wherein: the 90-degree elbow (1) is a steel 90-degree elbow.

4. The novel abrasion-resistant elbow structure for the dust removal pipeline as claimed in claim 1, wherein: the thickness of the outer surfacing wear-resistant alloy (8) is more than or equal to 4mm, and the outer surfacing wear-resistant alloy is used for enhancing the wear-resistant strength of the steel elbow backpack (2).

5. The novel abrasion-resistant elbow structure for the dust removal pipeline as claimed in claim 1, wherein: during operation, after the steel elbow backpack (2) and the inner surfacing wear-resistant alloy (3) are welded, the wear-resistant castable (4) is poured in the gap of the steel elbow backpack (2), the castable with high temperature resistance and high density is selected as the wear-resistant castable (4), and the dedusting exhaust gas temperature of the local pelletizing shaft furnace reaches 120 ℃.

Technical Field

The invention relates to the technical field of pipeline systems, in particular to a novel anti-abrasion elbow structure for a dust removal pipeline.

Background

At present, as the requirement of desulfurization and denitration environmental protection equipment facilities on the technical indexes of dust removal waste gas of a pellet shaft furnace production line gradually rises, the abrasion of the production waste gas with large particles, high temperature and high flow rate to the dust removal facility pipeline is increasingly aggravated, the dust removal pipeline, particularly an elbow, is rapidly abraded, the pipeline strength and rigidity are reduced, the service life of the pipeline equipment facilities is seriously influenced, the environmental protection facilities on the production site do not reach the standard and pollute the environment, the physical health of workers on the production site is seriously influenced, the cleaning labor intensity is increased, and certain potential safety hazards also exist.

The mode that welding steel pipe elbow adds the knapsack filler is mostly adopted to current dust removal pipeline elbow, and the filler forms local filling in the pipeline knapsack not real, is in the outside of pipeline elbow, can't accomplish the wearing and tearing of protection elbow body, can't satisfy life cycle requirement.

The service life of the dust removal equipment becomes an important factor influencing the overhaul period and the overhaul duration of the pellet shaft furnace, and also becomes a key factor of the yield, the quality, the equipment operation rate and the environmental-protection standard reaching rate of pellet ores of the shaft furnace.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a novel anti-wear elbow structure for a dust removal pipeline, which solves the problems that the existing dust removal pipeline elbow mostly adopts a mode of adding a packsack filler to a welded steel pipe elbow, the filler is partially and incompletely filled in a packsack of the pipeline, the filler is positioned outside the pipeline elbow, the abrasion of an elbow body cannot be protected, and the requirement on the service life cannot be met.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a novel anti-wear elbow structure for a dust removal pipeline comprises a 90-degree elbow, wherein one end opening of the 90-degree elbow faces to the left, the other end opening faces to the up, the top and the bottom of an inner cavity of a bending part of the 90-degree elbow are both provided with inner surfacing wear-resistant alloy, a wear-resistant guide plate is arranged on the inner surfacing wear-resistant alloy which is relatively positioned below and is obliquely positioned in the inner cavity of the 90-degree elbow, the inclination angle of the wear-resistant guide plate relative to the inner wall of the 90-degree elbow is 15-25 degrees, the length of the wear-resistant guide plate is 100mm, the width of the wear-resistant guide plate is 50mm and the thickness of the wear-resistant alloy are 10mm, the thickness of the inner surfacing wear-resistant alloy is more than or equal to 6mm, the wear-resistant strength and the service life of the 90-degree elbow are enhanced, a surfacing wear-resistant layer is arranged on one side of the wear-resistant guide plate close to the left end opening of the 90-degree elbow, the thickness of the surfacing wear-resistant layer is more than or equal to 3mm, and a wear-resistant castable is arranged on the outer side of the bending part of the 90-resistant elbow, one side that 90 elbows were kept away from to the castable that wear resistant is provided with outer build-up welding antifriction alloy, one side rigidity full weld that 90 elbows were kept away from to outer build-up welding antifriction alloy is provided with steel elbow knapsack.

Preferably, when the 90-degree elbow is used, the port located at the lower left position is an air inlet end, the port located at the upper right position is an air outlet end, and the direction of air flow in the 90-degree elbow flows from the air inlet end to the air outlet end.

Preferably, the 90-degree elbow is a steel 90-degree elbow.

Preferably, the thickness of the outer surfacing wear-resistant alloy is more than or equal to 4mm, and the outer surfacing wear-resistant alloy is used for enhancing the wear-resistant strength of the steel elbow backpack.

Preferably, during operation, after the welding treatment of the steel elbow backpack and the inner surfacing wear-resistant alloy structure is completed, the wear-resistant castable is poured in the gap of the steel elbow backpack, the castable with high temperature resistance and high density is selected as the wear-resistant castable, and the dust removal waste gas temperature of the local pelletizing shaft furnace reaches 120 ℃.

(III) advantageous effects

The invention provides a novel anti-wear elbow structure for a dust removal pipeline. The method has the following beneficial effects:

this dust removal pipeline is with novel elbow structure that resistance to wears, the outside elbow knapsack that increases of dust removal pipeline to environmental protection facility, the elbow knapsack carries out build-up welding abrasive alloy and fills wear-resisting castable, the inside wear-resisting guide plate that sets up of dust removal pipeline, modes such as build-up welding abrasive alloy are carried out to the inside and wear-resisting guide plate windward side of elbow, local vortex is effectively reduced, reinforcing dust removal pipeline elbow abrasive resistance, improve elbow result of use and water conservancy diversion cooling air direction evenly distributed, the life cycle that wear and tear air leakage appears in the dust removal pipeline elbow has been prolonged, can prolong the life of leading the pipeline greatly, improve equipment operation rate, pellet output and quality, alleviate and overhaul intensity of labour and reduce spare part cost consumption.

Drawings

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

fig. 2 is a side cross-sectional view of the inventive structure.

In the figure: 1. a 90-degree elbow; 2. a steel elbow backpack; 3. internally surfacing wear-resistant alloy; 4. wear-resistant castable; 5. a wear resistant deflector; 6. surfacing a wear-resistant layer; 7. the direction of the air flow; 8. and (5) surfacing wear-resistant alloy.

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.

Referring to fig. 1-2, the present invention provides a technical solution: a novel wear-resistant elbow structure for a dust removal pipeline comprises a 90-degree elbow 1, wherein one end opening of the 90-degree elbow 1 faces to the left, the other end opening faces to the up, inner surfacing wear-resistant alloy 3 is arranged at the top and the bottom of an inner cavity of a bending part of the 90-degree elbow 1, a wear-resistant guide plate 5 is obliquely arranged on the inner surfacing wear-resistant alloy 3 which is relatively positioned below and is positioned in the inner cavity of the 90-degree elbow 1, the inclination angle of the wear-resistant guide plate 5 relative to the inner wall of the 90-degree elbow 1 is 15-25 degrees, the length of the wear-resistant guide plate 5 is 100mm, the width is 50mm, the thickness is 10mm, the thickness of the inner surfacing wear-resistant alloy 3 is more than or equal to 6mm and is used for enhancing the wear resistance and the service life of the 90-degree elbow 1, a surfacing wear-resistant layer 6 is arranged on one side of the wear-resistant guide plate 5 close to the left end opening of the 90-degree elbow 1, the thickness of the surfacing wear-resistant layer 6 is more than or equal to 3mm, a wear-resistant castable 4 is arranged on the outer side of the bending part of the 90-degree elbow 1, one side of the wear-resistant castable 4, which is far away from the 90-degree elbow 1, is provided with an outer surfacing wear-resistant alloy 8, and one side of the outer surfacing wear-resistant alloy 8, which is far away from the 90-degree elbow 1, is provided with a steel elbow backpack 2 in a rigid full-welding manner.

When the 90-degree elbow 1 is used, the port relatively positioned at the lower left position is an air inlet end, the port relatively positioned at the upper right position is an air outlet end, and the direction of air flow in the 90-degree elbow 1 flows from the air inlet end to the air outlet end.

The 90-degree elbow 1 is a steel 90-degree elbow.

The thickness of the outer surfacing wear-resistant alloy 8 is more than or equal to 4mm, and the outer surfacing wear-resistant alloy is used for enhancing the wear-resistant strength of the steel elbow backpack 2.

During operation, after the steel elbow backpack 2 and the inner surfacing wear-resistant alloy 3 are welded, the wear-resistant castable 4 is poured into the gap of the steel elbow backpack 2, the castable with high temperature resistance and high density is selected as the wear-resistant castable 4, and the dedusting exhaust gas temperature of the local pelletizing shaft furnace reaches 120 ℃.

When the device works, waste gas flows into a steel 90-degree elbow of a dust removal pipeline along the direction of the guide gas flow, and the waste gas flow sequentially adopts the principle of surfacing wear-resistant layer of the deflector → the wear-resistant deflector → surfacing wear-resistant alloy welded on the inner wall of the steel 90-degree elbow → the wear-resistant pouring material → surfacing wear-resistant alloy welded on the inner wall of the steel elbow backpack → the steel elbow backpack.

The exhaust gas follows the guide airflow direction and enters the steel 90-degree elbow of the dust removal pipeline, the exhaust gas airflow follows the steel 90-degree elbow and is subjected to erosion and abrasion by each protective layer from inside to outside, each protective measure is sequentially abraded, the structure of the whole steel 90-degree elbow is effectively protected, and the service life of the steel 90-degree elbow is greatly prolonged.

To sum up, this dust removal pipeline is with novel elbow structure of resistance to wears, to the outside elbow knapsack that increases of dust removal pipeline of environmental protection facility, the elbow knapsack carries out build-up welding abrasive alloy and fills wear-resisting castable, the inside wear-resisting guide plate that sets up of dust removal pipeline, modes such as wear-resisting alloy of build-up welding are carried out to the inside and wear-resisting guide plate windward side of elbow, effectively reduce local vortex, reinforcing dust removal pipeline elbow abrasive resistance, improve elbow result of use and water conservancy diversion cooling wind direction evenly distributed, the life cycle that wearing and tearing leaked has appeared in the dust removal pipeline elbow has been prolonged, can prolong the life of leading pipe greatly, improve equipment operation rate, pellet output and quality, alleviate maintenance intensity of labour and reduce spare parts cost consumption.

This patent a pellet shaft furnace dust removal pipeline elbow structure sets up steel elbow knapsack, build-up welding abrasion-resistant alloy and wear-resistant guide plate in the inside and outside 90 elbows of steel, the effectual wearing and tearing speed that reduces 90 elbows of steel, has improved the intensity and the life of pipeline elbow.

According to the dust removal pipeline elbow structure of the pellet shaft furnace, the service life of an original common wear-resistant pipeline elbow is about 3-4 months, the service life of the improved pipeline elbow is prolonged to 11-12 months on the premise that the original service performance and the original use cost are guaranteed, and the use cost performance of the pipeline elbow is greatly improved.

This patent a pellet shaft furnace dust removal pipeline elbow structure, structural style is reasonable safe and stable reliable more, extensively is applicable to the pipeline facilities such as large granule, high temperature, for example material conveying pipeline such as dust removal pipeline and gas, dust etc..

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.

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.