High-temperature anti-abrasion type waste heat power generation flue structure

Abstract

The utility model discloses a high temperature anti-abrasion type waste heat power generation flue structure, including straight pipe section and elbow section, the inside symmetrical flow line type guide plate of elbow section is arranged, and flow line type guide plate is along the arrangement of flue gas flow direction, and flow line type guide plate one end installs the adjusting type assembly structure, and the one end of flow line type guide plate is through adjusting type assembly structure and is assembled in the inner wall of elbow section and realizes fastening connection. This scheme is through setting up anti-abrasion layer, heat preservation layer and flow line type guide plate, and is adjusted with assembly structure, has realized that flue wear -resisting washout, heat loss reduction and guide plate quick dismounting maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of ferroalloy smelting technology, and in particular relates to a high-temperature wear-resistant waste heat power generation flue structure. Background Technology

[0002] In the ferroalloy smelting process, the high-temperature flue gas generated by the submerged arc furnace needs to be transported to the waste heat power generation system through flue ducts for energy recovery. The existing flue duct structure has two major problems: First, the dust particles carried by the high-temperature flue gas cause severe erosion in local areas such as bends and diameter changes, resulting in rapid equipment wear and frequent replacement; second, the pipe insulation effect is poor, with a heat loss rate of over 20%, which seriously affects the efficiency of waste heat utilization.

[0003] Traditional flues often employ a single wear-resistant material or a simple insulation layer design, failing to achieve a synergistic optimization of wear resistance and insulation. For example, simply increasing the wall thickness leads to increased thermal resistance but also excessive weight, while ordinary coatings are prone to peeling off at high temperatures, making them unsuitable for the complex operating conditions of metallurgical flues. Utility Model Content

[0004] The purpose of this utility model is to provide a high-temperature wear-resistant waste heat power generation flue structure to solve the problems of severe high-temperature flue gas erosion and high heat loss rate mentioned in the background art, which in turn easily leads to frequent equipment replacement and low waste heat utilization efficiency.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A high-temperature wear-resistant waste heat power generation flue structure includes a straight pipe section and a bent pipe section. Streamlined guide plates are symmetrically arranged inside the bent pipe section, and the streamlined guide plates are arranged along the flue gas flow direction. At the same time, an adjustable assembly structure is installed at one end of the streamlined guide plate, and the other end of the streamlined guide plate is movably assembled to the inner wall of the bent pipe section through the adjustable assembly structure to achieve a tight connection.

[0006] Preferably, the straight pipe section includes a base layer, the inner surface of which is wrapped with an insulation layer, and the inner wall of the base layer is coated with an anti-wear layer.

[0007] Preferably, the thickness of the insulation layer gradually increases from the straight pipe section to the bend pipe section, and the insulation layer is made of high-temperature resistant insulation cotton material.

[0008] Preferably, the inner wall of the bent pipe section is provided with a guide groove.

[0009] Meanwhile, a guide column is connected to the surface of the streamlined guide plate at the opposite end of the bend section, and the guide column extends into the inner cavity of the guide groove.

[0010] Preferably, the adjustable assembly structure is an elastic snap-fit ​​assembly, which includes a snap-fit ​​ring sleeve installed at one end of the streamlined guide plate and snap-fit ​​grooves opened at both ends of the inner wall of the bend section.

[0011] Preferably, the inner surface of the snap ring sleeve is provided with an annular groove, and a spring is provided in the annular groove, wherein the spring is annular in shape.

[0012] Preferably, one end of the spring is connected to a post, and the post is T-shaped, wherein the other end of the post is inserted into the inner cavity of the annular groove.

[0013] Preferably, the adjustable assembly structure is a fixed plug-in structure, which includes annular grooves at both ends of the bend and annular inserts inserted into the inner cavity of the annular grooves.

[0014] Preferably, one end of the annular insert is connected to an annular plate, and a bolt is installed through the surface of the annular insert.

[0015] The high-temperature wear-resistant waste heat power generation flue structure of this utility model has the following advantages: This high-temperature wear-resistant waste heat power generation flue structure achieves dual optimization of wear resistance and heat insulation through the coordinated design of straight and curved pipe sections. The wear-resistant layer sprayed on the inner wall of the base layer, combined with the insulation layer, reduces heat loss and resists dust erosion. Streamlined guide plates are installed on the inner wall of the curved pipe section; their streamlined structure, arranged along the flue gas flow direction, guides the airflow smoothly, reducing local turbulence and particle erosion wear. The streamlined guide plates are radially positioned by sliding assembly with guide grooves on the inner wall of the curved pipe section via guide pins, ensuring structural stability. The adjustable assembly structure uses elastic snap-fit ​​components or fixed plug-in structures to achieve rapid installation, stable fixation, and convenient disassembly and maintenance of the streamlined guide plates within the curved pipe section. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a partial cross-sectional view of the straight pipe section structure of this utility model; Figure 4 This is a schematic diagram of the first embodiment of the adjustable assembly structure of this utility model; Figure 5 This is a cross-sectional view of the bent pipe section structure in the first embodiment of this utility model; Figure 6 This is a schematic diagram of the streamlined guide plate structure in the first embodiment of this utility model; Figure 7 This is a cross-sectional view of the elastic snap-fit ​​assembly structure of this utility model; Figure 8 This is a schematic diagram of the second embodiment of the adjustable assembly structure of this utility model; Figure 9 This is a cross-sectional view of the bent pipe section structure in the second embodiment of this utility model; Figure 10 This is a schematic diagram of the streamlined guide plate structure in the second embodiment of this utility model; Figure 11 This is an exploded view of the ring plate and bolt structure of this utility model.

[0018] The markings in the diagram are as follows: 100, straight pipe section; 110, base layer; 120, insulation layer; 130, wear-resistant layer; 200, bend in the pipe section; 201, guide groove; 300, sealing flange; 400, streamlined guide plate; 410, guide slide column; 500, elastic snap-fit ​​assembly; 510, snap-fit ​​ring sleeve; 511, ring groove; 520, spring; 521, insert post; 530, slot; 600, fixed plug-in structure; 610, annular insert; 611, ring plate; 620, bolt; 630, ring groove. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0024] To better understand the purpose, structure, and function of this utility model, the high-temperature wear-resistant waste heat power generation flue structure of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] like Figures 1-11 As shown, this utility model discloses a high-temperature wear-resistant waste heat power generation flue structure, including a straight pipe section 100 and a bent pipe section 200. Sealing flanges 300 are fitted at the ends of both the straight pipe section 100 and the bent pipe section 200. The bent pipe section 200 and the straight pipe section 100 are tightly connected by two connected sealing flanges 300 and fastening bolts. Streamlined guide plates 400 are symmetrically arranged inside the bent pipe section 200, arranged along the flue gas flow direction. The streamlined guide plates 400 are made of high-temperature resistant alloy material. An adjustable assembly structure is installed at one end of the streamlined guide plate 400, and this adjustable assembly structure allows the other end of the streamlined guide plate 400 to be movably and securely connected to the inner wall of the bent pipe section 200.

[0026] The straight pipe section 100 and the bend section 200 are made of the same material. The straight pipe section 100 includes a base layer 110, and the inner surface of the base layer 110 is wrapped with an insulation layer 120. The inner wall of the base layer 110 is coated with an anti-wear layer 130. The anti-wear layer 130 is applied to the inner wall of the base layer 110 of the bend section by spraying. Specifically, the wear-resistant layer 130 uses a composite wear-resistant coating material. This composite wear-resistant coating material is made of silicon carbide and ceramic composite materials.

[0027] The thickness of the insulation layer 120 gradually increases from the straight pipe section 100 to the bend section 200. The insulation layer 120 of the straight pipe section 100 has a thickness of 50-80mm, and the insulation layer of the bend section 200 has a thickness of 80-120mm. The insulation layer 120 is made of high-temperature resistant insulation cotton material.

[0028] The inner wall of the bend section 200 is provided with a guide groove 201, which extends through the inner wall of the inlet end of the bend section 200 to the inner wall of the outlet end.

[0029] Meanwhile, a guide column 410 is connected to the surface of the streamlined guide plate 400 and the opposite end of the bend section 200. The guide column 410 and the streamlined guide plate 400 are integrally formed, and the guide column 410 extends into the inner cavity of the guide groove 201, which slides the streamlined guide plate 400 onto the inner wall of the bend section 200 to provide radial positioning.

[0030] according to Figures 4 to 11 As shown, the adjustable assembly structure has two implementation methods: a flexible snap-fit ​​component 500 and a fixed plug-in structure 600. Firstly, an elastic snap-fit ​​assembly 500 is used; the snap-fit ​​ring sleeve 510 at the end of the streamlined guide plate 400 has a built-in annular spring 520 and a "T"-shaped insert 521. During assembly, pressing the two ends of the snap-fit ​​ring sleeve 510 compresses the spring 520, causing the snap-fit ​​ring sleeve 510 to retract inward. After shrinking, the snap-fit ​​ring sleeve 510 inserts into the snap groove 530 on the inner wall of the bent pipe section 200. After the spring 520 returns to its original position, it elastically opens, and the snap-fit ​​521 and the snap groove 530 achieve limiting and fixing.

[0031] Secondly, a fixed plug-in structure 600 is adopted. One end of the annular insert 610 is connected to the annular plate 611 of the streamlined guide plate 400, and the other end is inserted into the annular groove 630 at the end of the bend section 200. A bolt 620 is used to pass through the annular insert 610 and screw into a pre-drilled threaded hole in the bend section 200 to complete the fastening. Both structures support quick assembly and disassembly of the streamlined guide plate 400, facilitating maintenance and replacement.

[0032] The following describes the specific structure of the adjustable assembly structure.

[0033] like Figures 4-7 As shown, this is the first embodiment of the adjustable assembly structure. The adjustable assembly structure is an elastic snap-fit ​​assembly 500. The elastic snap-fit ​​assembly 500 includes a snap-fit ​​ring sleeve 510 installed at one end of the streamlined guide plate 400 and a snap-fit ​​groove 530 opened at both ends of the inner wall of the bend section 200. The snap-fit ​​ring sleeve 510 is disposed in the inner cavity of the snap-fit ​​groove 530 to limit the streamlined guide plate 400.

[0034] Specifically, the surface of the snap ring sleeve 510 is connected to the surface of the guide slide post 410, and both ends of the snap ring sleeve 510 are elastic.

[0035] The inner surface of the snap ring sleeve 510 is provided with an annular groove 511, and a spring 520 is provided in the annular groove 511, wherein the spring 520 is annular in shape.

[0036] Meanwhile, one end of the spring 520 is connected to a post 521, which is T-shaped. The other end of the post 521 is inserted into the inner cavity of the annular groove 511, and the size of the snap ring 510 is larger than the inner cavity of the bent pipe section 200. During assembly, the two ends of the snap ring 510 are squeezed relative to each other, and the insert 521 is inserted into the ring groove 511 to compress the spring 520, thereby reducing the size of the snap ring 510 and inserting it into the bend section 200 until it enters the slot 530. After the snap ring 510 is installed in the slot 530, the spring 520 automatically resets and opens outward to press against the slot 530 without external force restraint, thus completing the limiting of the streamlined guide plate 400.

[0037] like Figures 8-11 As shown, this is the first embodiment of the adjustable assembly structure. The adjustable assembly structure is a fixed plug-in structure 600. The fixed plug-in structure 600 includes annular grooves 630 opened at both ends of the bend section 200, and annular inserts 610 inserted into the inner cavity of the annular grooves 630.

[0038] One end of the annular insert 610 is connected to an annular plate 611, and the streamlined guide plate 400 is fixedly connected to the side opposite to the annular plate 611. A bolt 620 is installed through the surface of the annular insert 610. The surface of the bent pipe section 200 and the inner cavity of the annular groove 630 are provided with threaded holes for use with the bolts 620. The annular insert 610 is inserted into the annular groove 630, and then the bolts 620 are screwed into the threaded holes through the annular insert 610 to fix the annular insert 610 at the end of the bent pipe section 200, thereby fixing the streamlined guide plate 400 placed in the bent pipe section 200.

[0039] Working principle of a high-temperature wear-resistant waste heat power generation flue structure: This scheme achieves dual optimization of wear resistance and heat preservation through the coordinated design of straight pipe section 100 and curved pipe section 200. The inner wall of the base layer 110 is sprayed with a wear-resistant layer 130 composed of silicon carbide and ceramic composite materials, which, together with the heat preservation layer 120, reduces heat loss and resists dust erosion. A streamlined guide plate 400 is set on the inner wall of the curved pipe section 200. Its streamlined structure, arranged along the flue gas flow direction, can guide the airflow to smoothly change direction, reducing local turbulence and particle erosion wear. The streamlined guide plate 400 is slidably assembled with the guide groove 201 on the inner wall of the curved pipe section 200 through guide slide column 410 to achieve radial positioning and ensure structural stability. The adjustable assembly structure realizes the rapid installation, stable fixation, and convenient disassembly and maintenance of the streamlined guide plate 400 in the curved pipe section 200 through elastic snap-fit ​​component 500 or fixed plug-in structure 600.

[0040] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A high-temperature anti-abrasion waste heat power generation flue structure comprising a straight pipe section (100) and an elbow pipe section (200), characterized in that: The inside of the bend section (200) is symmetrically provided with streamlined guide plates (400), which are arranged along the flue gas flow direction. At the same time, an adjustable assembly structure is installed at one end of the streamlined guide plate (400), and the other end of the streamlined guide plate (400) is movably assembled to the inner wall of the bend section (200) through the adjustable assembly structure to achieve a tight connection.

2. The high temperature abrasion resistant cogeneration flue structure according to claim 1, wherein: The straight pipe section (100) includes a base layer (110), and the inner surface of the base layer (110) is wrapped with an insulation layer (120), and the inner wall of the base layer (110) is coated with an anti-wear layer (130).

3. The high temperature abrasion resistant cogeneration flue structure according to claim 2, wherein: The thickness of the insulation layer (120) gradually increases from the straight pipe section (100) to the bend pipe section (200), and the insulation layer (120) is made of high temperature resistant insulation cotton material.

4. The high temperature abrasion resistant cogeneration flue structure according to claim 3, wherein: The inner wall of the bend (200) is provided with a guide groove (201); Meanwhile, the streamlined guide plate (400) and the surface of the opposite end of the bend section (200) are connected to a guide slide (410), and the guide slide (410) extends into the inner cavity of the guide groove (201).

5. The high temperature abrasion resistant cogeneration flue structure according to claim 1, wherein: The adjustable assembly structure is an elastic snap-fit ​​assembly (500), which includes a snap-fit ​​ring sleeve (510) installed at one end of the streamlined guide plate (400) and a snap-fit ​​groove (530) opened at both ends of the inner wall of the bend section (200).

6. The high-temperature wear-resistant waste heat power generation flue structure according to claim 5, characterized in that: The inner surface of the snap ring sleeve (510) is provided with an annular groove (511), and a spring (520) is provided in the annular groove (511), wherein the spring (520) is annular in shape.

7. The high temperature abrasion resistant cogeneration flue structure according to claim 6, wherein: One end of the spring (520) is connected to a post (521), and the post (521) is "T" shaped, wherein the other end of the post (521) is inserted into the inner cavity of the annular groove (511).

8. The high temperature abrasion resistant cogeneration flue structure according to claim 1, wherein: The adjustable assembly structure is a fixed plug-in structure (600), which includes annular grooves (630) opened at both ends of the bend section (200) and annular inserts (610) inserted into the inner cavity of the annular grooves (630).

9. The high temperature abrasion resistant cogeneration flue structure according to claim 8, wherein: One end of the annular insert (610) is connected to a ring plate (611), and a bolt (620) is installed through the surface of the annular insert (610).

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