CN213900273U

CN213900273U - Steel wear-resistant elbow with built-in multilayer guide plates for dust removal pipeline

Info

Publication number: CN213900273U
Application number: CN202022895317.XU
Authority: CN
Inventors: 孙立君; 万海波; 宋永军; 宋文利; 董颖
Original assignee: Beijing Znxy Energy Saving And Environment Technology Co ltd
Current assignee: Beijing Znxy Energy Saving And Environment Technology Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-06
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a dust removal pipeline of built-in multilayer guide plate uses wear-resisting elbow of steel, including the steel elbow with the steel guide plate that sets up in the elbow, the extension is provided with the straight tube section with the pipe connection respectively for steel elbow both ends mouth, the bend internal diameter of steel elbow is greater than the straight tube section diameter 1.1 times at least, and the straight tube section links up domaticly with linking up of bend, is provided with the wearing layer at the incident end face build-up welding of steel guide plate. The utility model discloses compare wear-resisting elbows such as pottery, cast stone, installation, transportation convenience, service temperature is unrestricted, through set up multilayer guide plate, increase elbow section diameter inside the elbow, reduced the dust granule in the flue gas and produced the effect such as grinding and peeling, erosion to the pipeline, the quick-witted guide plate inside the elbow that shifts to the elbow of the vulnerable position of elbow by the elbow extrados, changed the inside flue gas stream distribution condition that reaches the elbow export of elbow, it is with low costs. The service life of the pipeline and the elbow and the replacement period of the elbow are prolonged.

Description

Steel wear-resistant elbow with built-in multilayer guide plates for dust removal pipeline

Technical Field

The utility model relates to a dust removal pipeline of built-in multilayer guide plate uses wear-resisting elbow of steel.

Background

The abrasion of the dust removal pipeline is a common phenomenon and mainly occurs at the positions of elbows, tee joints and the like of the pipeline where the airflow changes. In dedusting systems, the dusty flue gas typically runs inside the duct at a velocity of 20 m/s. When the flue gas flow direction changes, due to the inertia effect, dust particles in the flue gas have the effects of grinding, peeling, erosion and the like on the pipeline, and meanwhile, a relatively complex turbulent flow phenomenon can occur inside the elbow. The outer cambered surface of elbow can take place wearing and tearing attenuation even wearing and tearing under the long-term effect of dusty flue gas, directly influences the safe operation of piping, and the system that wearing and tearing caused leaks out simultaneously also can influence on-the-spot dust collection effect, when causing environmental pollution, also is the waste of a resource. The abrasion of the elbow is delayed, the process conditions are improved, the external structure is changed, a novel wear-resistant material is adopted, and the like, but the popularization and the use are limited due to the influence of the factors such as the process conditions, the price and the like.

Disclosure of Invention

The utility model provides a wear-resisting elbow of steel system for dust removal pipeline of built-in multilayer guide plate through set up the multilayer guide plate in that the elbow is inside to and increase elbow section diameter, changed the inside flue gas stream distribution condition that reaches the elbow export of elbow, prolonged the life of pipeline and elbow.

In order to achieve the above object, the present invention provides a technical solution:

the utility model provides a dust removal pipeline of built-in multilayer guide plate uses steel wear-resisting elbow, includes the steel elbow and the steel guide plate that sets up in the elbow, wherein, the extension respectively of steel elbow both ends port is provided with the straight tube section with the pipe connection, the bend pipe section internal diameter of steel elbow is greater than the straight tube section diameter and is 1.1 times at least, and the straight tube section links up domaticly with linking up of bend pipe section, and the face build-up welding that flows to at the steel guide plate is provided with the wearing layer.

The scheme is further as follows: the cross section of the steel guide plate and the radius cambered surface of the elbow bend are concentrically arranged in the steel elbow.

The scheme is further as follows: the inner cambered surface on the upstream side of the steel guide plate is provided with character-shaped wear-resistant strips at intervals.

The scheme is further as follows: the guide plates are three layers, and the three layers of guide plates are uniformly distributed at intervals along the diameter direction of the bent pipe of the steel elbow.

The scheme is further as follows: the wear resistant layer has a thickness of 3mm to 5 mm.

The scheme is further as follows: the steel guide plate is divided into a plurality of sections which are evenly arranged at intervals.

The scheme is further as follows: the steel guide plate is divided into three sections, and the three sections of steel guide plates are arranged at equal intervals in front of and behind the bent pipe section.

The scheme is further as follows: and a wear-resistant layer is respectively arranged on the incident flow end face of each section of the steel guide plate in a surfacing mode, and the thickness of the wear-resistant layer is 3mm to 5 mm.

The utility model discloses an useful part is: compared with wear-resistant elbows such as ceramics and cast stones, the installation and transportation are convenient, the service temperature is not limited, through arranging a plurality of layers of guide plates inside the elbow, the diameter of the elbow section is increased, the effects of grinding and stripping, erosion and the like of dust particles in smoke on the pipeline are reduced, the easily damaged part of the elbow is transferred to the guide plate inside the elbow from the outer arc surface of the elbow, the smoke flow distribution condition inside the elbow and at the outlet of the elbow is changed, the wear-resistant layer can be repaired and welded after the wear-resistant layer of the guide plate is worn, the manufacture is simple, a special process is not needed, special materials are not needed, and the cost is low. The service life of the pipeline and the elbow and the replacement period of the elbow are prolonged.

Drawings

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

fig. 2 is a schematic view of the structure of the cross section of the elbow with three segments of the flow guide plate of the present invention.

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. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.

In the description of the present embodiment, it should be noted that the terms "connected" and "disposed" should be interpreted broadly, for example, the "connection" may be a wire connection or a mechanical connection; the 'placing' can be fixedly connected placing or integrally formed placing. The specific meanings of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to specific situations.

The utility model provides a dust removal pipeline of built-in multilayer guide plate uses wear-resisting elbow of steel, as shown in figure 1, including steel elbow 1 and the steel guide plate 2 that sets up in the elbow, the horizontal bending face that steel guide plate 2 is on a parallel with the steel elbow is bent and is set up in the steel elbow, also promptly: the cross section of the steel guide plate and the radius cambered surface of the elbow bend are concentrically and equally distributed in the steel elbow, the flow plate can be provided with a plurality of layers, and a plurality of sections of steel guide plates are uniformly arranged at intervals. One preferred scheme is as shown in figure 1, the guide plates are three layers, and the three layers of guide plates are uniformly distributed along the diameter direction of the elbow of the steel elbow at intervals. The steel baffles may be continuous as shown in fig. 1. The steel guide plate can be divided into a plurality of sections which are evenly arranged at intervals. As shown in fig. 2, the steel guide plate is divided into three sections, and the three sections of steel guide plates are uniformly arranged at equal intervals. Of course, the steel guide plate is also divided into two sections, and the two sections of steel guide plates are arranged in a front-back separated mode at the 45-degree angle of the bent pipe section, which depends on the size and application occasions of the elbow. A Q345B or Q235 steel plate with a thickness of 10mm is used as the large-diameter steel guide plate 2. The steel guide plate is fixed with the inner wall of the elbow in a welding mode, and horizontal linear wear-resistant strips 3 are arranged on the inner arc surface of the incident flow surface side of the steel guide plate at equal intervals for resisting dust erosion, wherein the width of the bead welding is 10-15mm, the height of the bead welding is 3-4mm, and the interval is 50-100mm (aiming at a large-caliber elbow). Steel elbow both ends port prolongs respectively and is provided with straight tube section 4 with the pipe connection, the bend section internal diameter of steel elbow is greater than the straight tube section diameter at least 1.1 times, for example, the straight tube section diameter is 200mm, the bend section diameter is that 1.1 times of straight tube section is 220mm, be greater than 20mm, in order to eliminate the influence of deflector thickness to draught area, the straight tube section is domatic linking 401 with linking of bend section, it is provided with the wearing layer to weld the build-up welding with the wear-resisting wire at the incident end face 201 of steel deflector, be used for resisting the dust with a font wear strip 3 and erode, the thickness of wearing layer is 3mm to 5 mm. And the incident flow end face of each section of steel guide plate is respectively provided with a wear-resistant layer in a surfacing mode.

Compared with wear-resistant elbows such as ceramics and cast stones, the elbow is convenient to install and transport, the service temperature is not limited, the multilayer guide plates are arranged inside the elbow, the diameter of the elbow section is increased, the effects of abrasion, erosion and the like of dust particles in flue gas on the pipeline are reduced, the easily damaged part of the elbow is transferred to the guide plate inside the elbow through the outer arc surface of the elbow, the distribution condition of flue gas flow inside the elbow and at the outlet of the elbow is changed, and the cost is low. The service life of the pipeline and the elbow and the replacement period of the elbow are prolonged.

Claims

1. The utility model provides a dust removal pipeline of built-in multilayer guide plate uses wear-resisting elbow of steel, includes the steel elbow and the steel guide plate that sets up in the elbow, its characterized in that, the extension respectively of steel elbow both ends port is provided with the straight tube section with the pipe connection, the bend internal diameter of steel elbow is greater than the straight tube section diameter 1.1 times at least, and the straight tube section links up domaticly with linking up of bend, is provided with the wearing layer at the incident flow terminal surface build-up welding of steel guide plate.

2. The steel wear-resistant elbow for the dust removal pipeline with the built-in multilayer guide plates according to claim 1, wherein the cross section of the steel guide plate and the radius cambered surface of the elbow bend are concentrically arranged in the steel elbow.

3. The steel wear-resistant elbow for the dust removal pipeline with the built-in multilayer guide plates according to claim 1 or 2, wherein the intrados on the upstream side of the steel guide plate are provided with linear wear-resistant strips at intervals.

4. The steel wear-resistant elbow with the built-in multilayer guide plates for the dust removal pipeline according to claim 1 or 2, wherein the guide plates are three layers, and the three layers of guide plates are uniformly distributed at intervals along the diameter direction of the elbow of the steel elbow.

5. The steel wear-resistant elbow for the dust removal pipeline with the built-in multilayer guide plates according to claim 1 or 2, wherein the thickness of the wear-resistant layer is 3mm to 5 mm.

6. The steel wear-resistant elbow for the dust removal pipeline with the built-in multilayer guide plates according to claim 1 or 2, wherein the steel guide plates are divided into a plurality of sections, and the plurality of sections of steel guide plates are uniformly arranged at intervals.

7. The steel wear-resistant elbow for the dust removal pipeline with the built-in multilayer guide plates according to claim 6, wherein the steel guide plates are divided into three sections, and the three sections of steel guide plates are arranged at equal intervals in front of and behind the bent pipe section.

8. The steel wear-resistant elbow for the dust removal pipeline with the built-in multilayer guide plates according to claim 6, wherein a wear-resistant layer is respectively arranged on the incident flow end surface of each section of steel guide plate in a surfacing mode, and the thickness of each wear-resistant layer is 3mm to 5 mm.