Flue elbow flow guide device

Abstract

The utility model discloses a flue elbow flow guide device which comprises an elbow smoke pipe, a plurality of flow guide plates are sequentially arranged at the elbow position of the elbow smoke pipe from inside to outside at intervals, and one end of each flow guide plate is detachably connected with the elbow smoke pipe. The other end of the guide plate abuts against the inner side wall of the elbow smoke pipe, and a plurality of limiting assemblies used for limiting non-axial displacement of the guide plate are installed on the inner side wall of the elbow smoke pipe. A fluid director is further installed in a pipeline in the air outlet end of the elbow smoke pipe, and the small-caliber section of the fluid director faces the air outlet end of the elbow smoke pipe. The multiple guide plates arranged at intervals can remarkably improve the airflow flowing state at the elbow of the elbow flue, turbulent flow and airflow resistance are reduced, and therefore energy loss is reduced. Meanwhile, the fluid director can effectively enable air flow to be in smooth transition in the air outlet end of the elbow smoke pipe, it is guaranteed that gas can be discharged smoothly, and the overall discharging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a flow guiding device for a flue elbow, belonging to the technical field of flue flow guiding. Background Art

[0002] The industrial large-size flue elbow flow guiding device, also known as a flow guiding cover, is a device used to prevent the reverse flow of flue gas in the industrial flue system. It is usually installed at the outlet of the flue elbow. At present, industrial flues are widely used in power plants, boilers and other large industrial facilities. With the requirements of industrial processes, the design of elbows in the flue becomes more and more frequent. However, the existing structure of the elbow part usually easily causes air flow disorder and increased resistance, which in turn leads to higher energy loss and insufficient emissions. Therefore, it is necessary to provide a device that can reduce the air flow resistance at the flue elbow part and effectively guide the flow. Content of the Utility Model

[0003] The purpose of the utility model is to provide a flow guiding device for a flue elbow to solve the problems in the prior art that the structure of the elbow part usually easily causes air flow disorder and increased resistance, which in turn leads to higher energy loss and insufficient emissions.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A flow guiding device for a flue elbow includes an elbow flue pipe. A plurality of flow guiding plates are sequentially arranged at intervals from inside to outside at the bent part of the elbow flue pipe. One end of the flow guiding plate is detachably connected to the elbow flue pipe; the other end abuts against the inner wall of the elbow flue pipe, and a plurality of groups of limiting components for restricting the non-axial displacement of the flow guiding plate are installed on the inner wall of the elbow flue pipe;

[0006] A flow guide is also installed in the pipe at the air outlet end of the elbow flue pipe, and the small-diameter section of the flow guide faces the air outlet end of the elbow flue pipe.

[0007] Preferably, the flow guiding plate is of a folded plate shape or an arc-shaped structure.

[0008] Preferably, from inside to outside, the surface area of the flow guiding plate facing the inner side of the bent part of the elbow flue pipe increases in sequence.

[0009] Preferably, an installation folded plate is arranged at the end of the flow guiding plate detachably connected to the elbow flue pipe. The flow guiding plate is inserted into the elbow flue pipe, and the installation folded plate and the elbow flue pipe are fixed by a bolt assembly.

[0010] Preferably, each group of limiting components includes two U-shaped plates correspondingly arranged above and below the end of the flow guiding plate abutting against the inner wall of the elbow flue pipe and fixedly connected to the inner wall of the elbow flue pipe, and the end of the flow guiding plate is embedded in the notch of the corresponding U-shaped plate.

[0011] Preferably, the distance between two adjacent flow deflectors is 8 - 20 cm.

[0012] Preferably, the height of the flow deflector is 20 - 40 cm.

[0013] Preferably, the flow deflector is made of stainless steel.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Multiple flow deflectors arranged at intervals can significantly improve the air flow state at the elbow of the elbow flue, reduce turbulence and air flow resistance, thereby reducing energy loss. At the same time, the flow deflector can effectively make the air flow smoothly transition at the outlet end of the elbow flue pipe, ensure that the gas can be discharged smoothly, and improve the overall emission efficiency; secondly, the flow deflector and the elbow flue pipe are detachably connected, which can facilitate the removal and replacement of a single flow deflector, so as to achieve the effect of facilitating the replacement of the damaged flow deflector. Description of the Drawings

[0016] Figure 1 It is a three-dimensional view of the overall structure of the flue elbow flow guiding device;

[0017] Figure 2 For the flue elbow flow guiding device Figure 1 The enlarged three-dimensional view of the structure in Area A;

[0018] Figure 3 It is a plan view of the overall structure of the flue elbow flow guiding device;

[0019] Figure 4 For the flue elbow flow guiding device Figure 3 The three-dimensional view of the structure in Area B.

[0020] Legend: 1. Elbow flue pipe; 2. Flow deflector; 3. U-shaped plate; 4. Installation folding plate; 5. Installation hole; 6. Flow deflector. Detailed Embodiments

[0021] The following specifically introduces the present utility model in conjunction with the drawings and embodiments.

[0022] This embodiment provides a flue elbow flow guiding device. Refer to Figures 1-4As shown in the figure, it includes an elbow flue pipe 1. Inside the elbow flue pipe 1, a plurality of flow guiding plates 2 are arranged at equal intervals (8 - 20 cm, preferably 10 cm), and from the inside to the outside, the surface area of the flow guiding plates 2 facing the inner side of the bent pipe of the elbow flue pipe 1 increases in sequence. One end of each flow guiding plate 2 penetrates through one side wall of the elbow flue pipe 1 and is slidably connected thereto, and an installation folding plate 4 is fixedly connected to the outside of this end of each flow guiding plate 2. Corresponding installation holes 5 are opened at both ends of the installation folding plate 4 and on the side wall of the elbow flue pipe 1, and the installation folding plate 4 is fixed to the elbow flue pipe 1 through a bolt assembly. At the same time, a flow deflector 6 is also installed at the air outlet end of the elbow flue pipe 1, and the small-diameter section of the flow deflector 6 faces the air outlet end of the elbow flue pipe 1. Among them, the flow deflector 6 belongs to the common knowledge in the field, its working principle is already a known technology, and its model is selected according to actual use. Therefore, the control method and / or wiring layout of the flow deflector 6 will not be explained in detail.

[0023] By arranging the flow guiding plates 2 at equal intervals inside the elbow flue pipe 1, the air flow state at the elbow of the flue can be significantly improved, the turbulence and air flow resistance can be reduced, and thus the effect of reducing energy loss can be achieved. The flow guiding plates 2 are detachably connected to the elbow flue pipe 1, which can facilitate the replacement of the flow guiding plates 2. In addition, by installing the flow deflector 6 inside the elbow flue pipe 1, the air flow can be effectively and smoothly transitioned at the elbow, ensuring that the gas can be discharged smoothly and improving the overall emission efficiency.

[0024] Furthermore, in order to prevent the air flow from interfering with the stability of the flow guiding plates 2, after each flow guiding plate 2 is inserted into the elbow flue pipe 1, the other end thereof will abut against the inner side wall of the elbow flue pipe 1, and two U-shaped plates 3 for preventing the corresponding flow guiding plate 2 from axially displacing are arranged on the inner wall of the elbow flue pipe 1. The end of the flow guiding plate 2 is embedded in the slots of the corresponding two U-shaped plates 3; the length of the flow guiding plate 2 is 15 - 40 cm, preferably 20 cm; the flow deflector 6 is made of corrosion-resistant stainless steel material, and the height of the flow deflector 6 is 20 - 40 cm, preferably 30 cm.

[0025] In actual application, the elbow flue pipe 1 is installed on the main flue pipe. The flow guiding plates 2 are inserted into the elbow flue pipe 1 and the other ends are embedded into the corresponding two U-shaped plates 3. Then, screws are passed through the installation holes 5 and embedded into the surface of the elbow flue pipe 1 to fix the flow guiding plates 2 on the elbow flue pipe 1; the large-diameter end of the flow deflector 6 is fixedly connected to the inner wall of the air outlet end of the elbow flue pipe 1, and the small-diameter end faces the gas outlet of the air outlet end. After the air flow enters the elbow flue pipe 1, the air flow state at the elbow of the flue can be significantly improved under the action of a plurality of flow guiding plates 2, the turbulence and air flow resistance can be reduced, thereby reducing energy loss. At the same time, the flow deflector 6 effectively makes the air flow smoothly transition at the elbow, ensuring that the gas can be discharged smoothly and improving the overall emission efficiency.

[0026] The above are only the preferred embodiments of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the principle of the utility model patent, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model patent.

Claims

1. A flue elbow flow guide device, comprising an elbow flue pipe, characterized in that: A plurality of guide plates are arranged at intervals from the inside to the outside of the elbow of the elbow smoke pipe, one end of the guide plate is detachably connected to the elbow smoke pipe; the other end is abutted against the inner wall of the elbow smoke pipe, and a plurality of groups of limiter components for limiting the non-axial displacement of the guide plate are installed on the inner wall of the elbow smoke pipe; A flow guide is also installed in the pipe inside the gas outlet end of the elbow smoke pipe, and the small-diameter section of the flow guide is arranged toward the gas outlet end of the elbow smoke pipe.

2. The flue elbow guide device according to claim 1, characterized in that: The guide plate is a folded plate or arc-shaped structure.

3. The flue elbow guide device according to any one of claims 1 or 2, characterized in that: From inside to outside, the surface area of ​​the guide plate toward the inner side of the elbow of the elbow smoke pipe increases successively.

4. The flue elbow guide device according to claim 1, characterized in that: One end of the guide plate detachably connected to the elbow smoke pipe is provided with a mounting folding plate, the guide plate is inserted into the elbow smoke pipe, and the mounting folding plate and the elbow smoke pipe are fixed by a bolt assembly.

5. The flue elbow guide device according to claim 1, characterized in that: Each set of limiting components includes two U-shaped plates correspondingly arranged above and below the end of the guide plate abutting the inner wall of the elbow smoke pipe and fixedly connected to the inner wall of the elbow smoke pipe, and the end of the guide plate is embedded in the corresponding groove of the U-shaped plate.

6. The flue elbow flow guide device according to claim 1, characterized in that: The distance between two adjacent guide plates is 8-20cm.

7. The flue elbow flow guide device according to claim 1, characterized in that: The height of the deflector is 20-40 cm.

8. The flue elbow flow guide device according to claim 1, characterized in that: The deflector is made of stainless steel.

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