Multi-layer heat insulation type steel chimney

Abstract

The utility model provides a multi-layer heat insulation type steel chimney, which relates to the technical field of multi-layer steel chimneys, and comprises a fixed base, a chimney cylinder body is arranged on the fixed base, and the chimney cylinder body is composed of a plurality of steel cylinders; a mounting inner sleeve is arranged in the chimney barrel, a heat insulation layer is arranged between the chimney barrel and the mounting inner sleeve, so that the temperature gradient of the chimney wall can be effectively reduced, the thermal stress is reduced, and the problems of deformation, cracks and the like of the chimney structure are prevented; condensation is prevented from forming acid liquid to corrode the inner wall of the chimney, the structural integrity of the chimney is protected, and the problems that in the high-temperature flue gas discharging process of the chimney, the temperature of the chimney wall rises sharply, the temperature difference between the interior and exterior of the metal wall of the chimney is large, large thermal stress is generated, and the chimney is not prone to falling under the thermal stress effect for a long time are solved. And the chimney structure is easy to deform, crack and the like.

Description

Technical Field

[0001] This utility model relates to the field of multi-layer steel chimney technology, and in particular to a multi-layer heat-insulating steel chimney. Background Technology

[0002] A vertical steel chimney is a common device used to discharge flue gas and waste gas generated in industrial production or other processes. It is typically constructed of a cylindrical steel cylinder, standing upright. The steel cylinder is generally made of rolled and welded steel plates, and the thickness of the steel plates varies depending on the specific application requirements and load-bearing capacity.

[0003] When existing vertical steel chimneys are in use, the temperature of the chimney wall rises sharply during the process of emitting high-temperature flue gas. The large temperature difference between the inside and outside of the chimney metal wall generates significant thermal stress. Under such thermal stress for a long time, the chimney structure is prone to deformation and cracks. Moreover, water vapor and acidic gases in the high-temperature flue gas are prone to condense into acidic liquids when they encounter the cooler chimney wall, causing corrosion to the inner wall of the chimney. Utility Model Content

[0004] This disclosure relates to a multi-layered insulated steel chimney. Because an insulation layer is provided between the chimney body and the inner sleeve, the temperature gradient of the chimney wall can be effectively reduced, thermal stress can be reduced, and problems such as deformation and cracks in the chimney structure can be prevented. Moreover, the inner sleeve prevents water vapor and acidic gases in the high-temperature flue gas from condensing into acidic liquids when they encounter the lower-temperature chimney wall, thus avoiding corrosion of the inner wall of the chimney and protecting the integrity of the chimney structure.

[0005] In a first aspect, this disclosure provides a multi-layer insulated steel chimney, specifically comprising: a fixed base, on which a chimney body is provided, the chimney body being composed of multiple steel cylinders; an inner sleeve is provided inside the chimney body; a connecting sleeve is provided between two adjacent chimney bodies; and locking bolts are provided on the outer periphery of the connecting sleeve, the locking bolts being distributed in a ring array.

[0006] The chimney body is provided with a first fixing ring and a second fixing ring, and the first fixing ring and the second fixing ring are distributed symmetrically in an up-down manner. Both the first fixing ring and the second fixing ring are provided with mounting grooves near the outer ring.

[0007] In at least some embodiments, the fixed base is provided with support plates at both the upper and lower ends, and the two support plates are distributed symmetrically. The support plates are provided with connecting grooves near the outer ring, and the connecting grooves are distributed in a ring array.

[0008] In at least some embodiments, the mounting slots are distributed in a ring array, and the mounting slots of the first fixing ring and the second fixing ring are matched vertically and locked by locking bolts.

[0009] In at least some embodiments, the inner ring of the second fixing ring is provided with two docking sleeves, and the two docking sleeves are distributed symmetrically. Limiting holes are provided on both sides of the docking sleeves, and the two limiting holes are distributed symmetrically.

[0010] In at least some embodiments, the inner rings of the first and second fixed rings are provided with two limiting grooves, and the upper and lower limiting grooves are positioned correspondingly. A heat insulation layer is provided between the chimney body and the inner sleeve, and the heat insulation layer is located between the first and second fixed rings.

[0011] In at least some embodiments, the outer peripheral surface of the mounting inner sleeve is provided with two limiting blocks, and the two limiting blocks are distributed symmetrically. The upper part of the outer peripheral surface of the mounting inner sleeve is provided with two support plates, and the two support plates are distributed symmetrically. The mounting inner sleeve is slidably connected to the limiting grooves of the first fixing ring and the second fixing ring through the limiting blocks, and the support plate is located above the second fixing ring.

[0012] In at least some embodiments, the bottom of the support plate is provided with an elastic buckle, and the bottom of the support plate is provided with two limiting rods, which are located on both sides of the elastic buckle. A compression spring is fitted on the limiting rod. The support plate is engaged with the docking sleeve of the second fixing ring through the elastic buckle, and the limiting rod slides through the limiting hole. The compression spring is supported between the support plate and the second fixing ring.

[0013] This utility model provides a multi-layer heat-insulated steel chimney, which has the following beneficial effects:

[0014] In this invention, a heat insulation layer is provided between the chimney body and the inner sleeve, which can effectively reduce the temperature gradient of the chimney wall, reduce thermal stress, and prevent the chimney structure from deforming, cracking, or other problems. In addition, the inner sleeve prevents water vapor and acidic gases in the high-temperature flue gas from condensing into acidic liquids when they encounter the cooler chimney wall, thus avoiding corrosion of the inner wall and protecting the integrity of the chimney structure.

[0015] Furthermore, when the inner sleeve is connected to the chimney body, the support plate engages with the mating sleeve of the second fixing ring via an elastic buckle, and the limiting rod slides through the limiting hole. Additionally, a compression spring supports the inner sleeve between the support plate and the second fixing ring. Thus, the installation of the inner sleeve to the chimney body is convenient, and the elasticity of the compression spring makes the installation of the inner sleeve more stable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0018] In the attached diagram:

[0019] Figure 1 This shows a schematic diagram of the overall axial view structure of this application;

[0020] Figure 2 This paper shows a schematic diagram of the disassembled structure of the chimney body and the inner sleeve of this application.

[0021] Figure 3 A cross-sectional view of the chimney body and the inner sleeve of this application is shown in the schematic diagram.

[0022] Figure 4 This application shows Figure 2 Enlarged structural diagram of section A in the middle;

[0023] Figure 5 This application shows Figure 2 Enlarged structural diagram of section B.

[0024] List of reference numerals in the attached diagram:

[0025] 1. Fixed base; 101. Support plate; 102. Connecting groove; 2. Chimney body; 201. First fixing ring; 202. Second fixing ring; 2021. Connecting sleeve; 2022. Limiting hole; 203. Mounting groove; 204. Limiting groove; 205. Heat insulation layer; 3. Mounting inner sleeve; 301. Limiting block; 302. Support plate; 3021. Elastic buckle; 3022. Limiting rod; 3023. Compression spring; 4. Connecting sleeve; 5. Locking bolt. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1: Please refer to Figures 1 to 5 :

[0028] This utility model proposes a multi-layer heat-insulating steel chimney, including: a fixed base 1, a chimney body 2 on the fixed base 1, and the chimney body 2 is composed of multiple steel cylinders; an inner sleeve 3 is provided inside the chimney body 2; a connecting sleeve 4 is provided between two adjacent chimney bodies 2; and locking bolts 5 are provided on the outer periphery of the connecting sleeve 4, and the locking bolts 5 are distributed in a ring array.

[0029] The chimney body 2 is provided with a first fixing ring 201 and a second fixing ring 202, and the first fixing ring 201 and the second fixing ring 202 are distributed in a vertically symmetrical manner. The first fixing ring 201 and the second fixing ring 202 are both provided with mounting grooves 203 near the outer ring.

[0030] The fixed base 1 has support plates 101 at both the upper and lower ends, and the two support plates 101 are symmetrically distributed. The support plates 101 have connecting grooves 102 near the outer ring, and the connecting grooves 102 are distributed in a ring array.

[0031] The mounting slots 203 are arranged in a ring array, and the mounting slots 203 of the first fixing ring 201 and the second fixing ring 202 are matched vertically and locked by the locking bolts 5.

[0032] In this embodiment of the disclosure, such as Figure 2 and Figure 3 As shown, the inner rings of the first fixing ring 201 and the second fixing ring 202 are each provided with two limiting grooves 204, and the upper and lower limiting grooves 204 are positioned correspondingly. A heat insulation layer 205 is provided between the chimney body 2 and the mounting inner sleeve 3, and the heat insulation layer 205 is located between the first fixing ring 201 and the second fixing ring 202. In this utility model, since a heat insulation layer 205 is provided between the chimney body 2 and the mounting inner sleeve 3, the temperature gradient of the chimney wall can be effectively reduced and the thermal stress can be reduced. Moreover, the mounting inner sleeve 3 is provided so that when water vapor and acidic gases in high-temperature flue gas encounter the lower-temperature chimney wall, they are prevented from condensing into acidic liquid and causing corrosion to the inner wall of the chimney.

[0033] Example 2, based on Example 1, such as Figure 4 and Figure 5 As shown, the inner ring of the second fixing ring 202 is provided with two docking sleeves 2021, and the two docking sleeves 2021 are distributed symmetrically. The docking sleeves 2021 are provided with limiting holes 2022 on both sides, and the two limiting holes 2022 are distributed symmetrically.

[0034] The outer circumferential surface of the inner sleeve 3 is provided with two limiting blocks 301, which are symmetrically distributed. The upper part of the outer circumferential surface of the inner sleeve 3 is provided with two support plates 302, which are symmetrically distributed. The inner sleeve 3 is slidably connected to the limiting grooves 204 of the first fixing ring 201 and the second fixing ring 202 through the limiting blocks 301, and the support plates 302 are located above the second fixing ring 202.

[0035] The support plate 302 has an elastic buckle 3021 at its bottom and two limiting rods 3022 at its bottom. The limiting rods 3022 are located on both sides of the elastic buckle 3021. A compression spring 3023 is fitted on the limiting rod 3022. When the inner sleeve 3 is connected to the chimney body 2, the support plate 302 is engaged with the mating sleeve 2021 of the second fixing ring 202 through the elastic buckle 3021. The limiting rod 3022 slides through the limiting hole 2022, and the compression spring 3023 is supported between the support plate 302 and the second fixing ring 202. It can be seen that the installation of the inner sleeve 3 and the chimney body 2 is convenient, and the elasticity of the compression spring 3023 makes the installation of the inner sleeve 3 more stable.

[0036] The working principle of this embodiment is as follows: During use, the heat insulation layer 205 between the chimney body 2 and the inner sleeve 3 effectively reduces the temperature gradient of the chimney wall and lowers thermal stress. Furthermore, the inner sleeve 3 prevents water vapor and acidic gases in the high-temperature flue gas from condensing into acidic liquids that corrode the inner wall of the chimney when they encounter the cooler chimney wall. When the inner sleeve 3 is connected to the chimney body 2, the support plate 302 engages with the mating sleeve 2021 of the second fixing ring 202 via an elastic buckle 3021, and the limiting rod 3022 slides through the limiting hole 2022. A compression spring 3023 supports the inner sleeve 3 between the support plate 302 and the second fixing ring 202. Therefore, the installation of the inner sleeve 3 and the chimney body 2 is convenient, and the elasticity of the compression spring 3023 ensures a more stable installation of the inner sleeve 3.

[0037] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A multi-layer insulated steel chimney, characterized by, The utility model relates to a kind of multi-layer heat insulation type steel chimneys, including: Fixed base (1), which is provided with chimney cylinder (2) on the fixed base (1), and the chimney cylinder (2) is composed of multiple steel cylinders;The mounting inner sleeve (3) is provided in the chimney cylinder (2);The connecting sleeve (4) is provided between the adjacent two chimney cylinder (2);The connecting sleeve (4) is provided with locking bolt (5) on the outer periphery, and the locking bolt (5) is distributed in annular array mode; The chimney cylinder (2) is provided with first fixed ring (201) and second fixed ring (202), and the first fixed ring (201) and the second fixed ring (202) are distributed in upper and lower symmetry mode, and the first fixed ring (201) and the second fixed ring (202) are provided with mounting groove (203) on the outer ring side; The outer peripheral surface of the mounting inner sleeve (3) is provided with two limit blocks (301), and the two limit blocks (301) are distributed in symmetry mode, the outer peripheral surface of the mounting inner sleeve (3) is provided with two support plates (302) on the upper side, and the two support plates (302) are distributed in symmetry mode, the mounting inner sleeve (3) is connected with the limit groove (204) of the first fixed ring (201) and the second fixed ring (202) by the limit block (301), and the support plate (302) is located above the second fixed ring (202).

2. The multi-layer heat insulation type steel chimney according to claim 1, wherein The fixed base (1) is provided with support frame plates (101) on the upper and lower ends, and the two support frame plates (101) are distributed in symmetry mode, the support frame plate (101) is provided with connecting grooves (102) on the outer ring side, and the connecting grooves (102) are distributed in annular array mode.

3. The multi-layer heat insulation type steel chimney according to claim 1, wherein The mounting grooves (203) are distributed in annular array mode, and the mounting grooves (203) of the first fixed ring (201) and the second fixed ring (202) are matched in upper and lower directions and are locked and controlled by the locking bolt (5).

4. The multi-layer heat insulation type steel chimney according to claim 1, wherein The inner ring of the second fixed ring (202) is provided with two butt joint clamping sleeves (2021), and the two butt joint clamping sleeves (2021) are distributed in symmetry mode, the limit holes (2022) are provided on the two sides of the butt joint clamping sleeve (2021), and the two limit holes (2022) are distributed in symmetry mode.

5. The multi-layer heat insulation type steel chimney according to claim 1, wherein The inner ring of the first fixed ring (201) and the second fixed ring (202) is provided with two limit grooves (204), and the upper and lower limit grooves (204) are corresponding in position, the heat insulation layer (205) is provided between the chimney cylinder (2) and the mounting inner sleeve (3), and the heat insulation layer (205) is located between the first fixed ring (201) and the second fixed ring (202).

6. The multi-layer heat insulation type steel chimney according to claim 1, wherein The bottom of the support plate (302) is provided with an elastic buckle (3021), the bottom of the support plate (302) is provided with two limiting insertion rods (3022), the limiting insertion rods (3022) are located on the two sides of the elastic buckle (3021), a compression spring (3023) is sleeved on the limiting insertion rod (3022), the support plate (302) is clamped with the butt joint sleeve (2021) of the second fixing ring (202) through the elastic buckle (3021), the limiting insertion rod (3022) slides through the limiting hole (2022), and the compression spring (3023) is supported between the support plate (302) and the second fixing ring (202).

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