Chimney with high-temperature-resistant and corrosion-resistant functions

Abstract

The chimney with the high-temperature-resistant and corrosion-resistant functions comprises a first barrel body, a second barrel body, a third barrel body and a chimney base, the third barrel body is fixedly connected with the chimney base through a flange structure, the lower end of the second barrel body is fixedly connected with the third barrel body, and the lower end of the second barrel body is fixedly connected with the chimney base. The upper end of the second barrel body is fixedly connected with the first barrel body, a flue is arranged on the side face, close to the chimney base, of the third barrel body, and an ash removal opening is formed in the position, opposite to the flue, of the third barrel body. Aluminum silicate refractory fiber blankets are arranged at the joint of the first barrel body and the second barrel body as well as the joint of the second barrel body and the third barrel body, and linings are arranged on the inner walls of the first barrel body, the second barrel body and the third barrel body; the manufacturing cost is low; the processing difficulty is low; the service life is long, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of chimney structures, and particularly relates to a chimney with high temperature resistance and corrosion resistance functions. Background Technique

[0002] The development process of chimneys with high temperature resistance and corrosion prevention functions has experienced from the early simple painting method to modern advanced technologies such as fiberglass lining and titanium alloy lining.

[0003] The early chimney anti-corrosion process mainly adopted a simple painting method. This method had many problems, such as it was difficult to guarantee the painting quality, and phenomena such as uneven coating and cracking were likely to occur. Moreover, pollution was easily generated during the painting process, which had an impact on the environment. With the development of technology, modern chimney anti-corrosion processes have adopted more advanced technologies, including fiberglass lining, titanium alloy lining, etc. These technologies have the characteristics of corrosion resistance, wear resistance, high temperature resistance, etc., can effectively prevent the corrosion of flue gas on the inner wall of the chimney, improve the service life of the chimney at the same time, reduce maintenance costs, and reduce environmental pollution.

[0004] However, the high temperature resistance performance of fiberglass chimneys has certain defects. Fiberglass chimneys are prone to losing strength and rigidity under high temperature conditions. In high temperature process fields such as thermal power generation, fiberglass chimneys need to withstand extreme environments such as high temperature, high pressure and dust, and are prone to problems such as cracks and deformation, seriously affecting their durability and stability. In addition, the long-term high temperature resistance of fiberglass chimneys is poor. The strength of general polyester FRP decreases significantly above 50°C and is generally only used below 100°C; the strength of general epoxy FRP decreases significantly above 60°C. Although high temperature resistant resins can be selected to make it possible to have a long-term working temperature of 200 - 300°C, this still limits its application in higher temperature environments.

[0005] Therefore, when using fiberglass chimneys, attention needs to be paid to the limitations of their high temperature resistance performance, especially in extreme high temperature conditions such as fires, deformation, cracking or failure may occur. In addition, the service life of fiberglass chimneys is relatively short, generally about 10 years, mainly because the resin in the structure will gradually age during long-term use, thus reducing the durability, strength and stability of the chimney.

[0006] Titanium alloy chimneys mainly have the disadvantages of high price, difficult processing, requiring professional technical support, and performance degradation at high temperatures.

[0007] Therefore, providing a chimney with high temperature resistance and corrosion resistance functions can solve the above problems. Content of the Utility Model

[0008] The technical problem to be solved by the present utility model is that the existing glass chimneys have poor long-term high-temperature resistance and short service life, while titanium alloy chimneys are expensive and difficult to process. Therefore, a chimney with high-temperature resistance and corrosion resistance is provided. The chimney with high-temperature resistance and corrosion resistance includes:

[0009] A first cylinder body, a second cylinder body, a third cylinder body and a chimney base. The third cylinder body is fixedly connected to the chimney base through a flange structure. The lower end of the second cylinder body is fixedly connected to the third cylinder body, and the upper end of the second cylinder body is fixedly connected to the first cylinder body. A flue is provided on the side of the third cylinder body close to the chimney base, and a soot cleaning port is provided on the third cylinder body opposite to the flue. A refractory fiber blanket of aluminum silicate is provided at the connection between the first cylinder body and the second cylinder body and at the connection between the second cylinder body and the third cylinder body. Linings are provided on the inner walls of the first cylinder body, the second cylinder body and the third cylinder body, and a cylinder head is fixedly provided at the top end of the first cylinder body.

[0010] Further, the chimney base includes anchor bolts. The anchor bolts pass through the flange structure on the third cylinder body, and nuts are provided on the anchor bolts for fixing the flange structure on the third cylinder body to the anchor bolts.

[0011] Further, a plurality of lining anchor members are fixedly provided on the inner walls of the first cylinder body, the second cylinder body and the third cylinder body, and the lining anchor members are arranged in a matrix.

[0012] Further, the lining is a YT-2 type lightweight heat-insulating acid-resistant castable, and the lining is fixedly formed by casting the YT-2 type lightweight heat-insulating acid-resistant castable on the lining anchor members.

[0013] Further, the flue is provided at a position 1.5 m above the ground on the third cylinder body.

[0014] Further, the soot cleaning port is provided at a position 2 m above the ground on the third cylinder body. The width of the soot cleaning port is 1 m, and the height of the soot cleaning port is 0.5 m.

[0015] Further, the heights of the first cylinder body, the second cylinder body and the third cylinder body are all 8 - 10 m.

[0016] Further, the thickness of the refractory fiber blanket of aluminum silicate is 15 mm.

[0017] Further, a circumferential reinforcing rib is provided at the upper end of the first cylinder body.

[0018] Further, the chimney head is made of 00Cr17Ni14Mo2 ultra-low carbon steel, the first chimney body and the second chimney body are made of Q235NH weathering steel, and the third chimney body is made of Q355NH weathering steel.

[0019] Implementing the present utility model has the following beneficial effects:

[0020] 1. In this application, the chimney body of the chimney adopts weathering steel and 00Cr17Ni14Mo2 ultra-low carbon steel, which has good heat resistance and corrosion resistance. The inner lining adopts YT-2 type lightweight heat-insulating acid-resistant castable, which has a low thermal conductivity, good heat insulation and the function of protecting the chimney body. A layer of aluminum silicate refractory fiber blanket is provided at the connection of the chimney bodies and is compacted and formed during hoisting, avoiding secondary repair of the connection after each section of the chimney is hoisted. It has low cost, low processing difficulty and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is a top view of the upper end of the first chimney body of the present utility model;

[0023] Figure 3 is a cross-sectional view of the upper end of the first chimney body of the present utility model;

[0024] Figure 4 is a cross-sectional view of the connection between the second chimney body and the third chimney body of the present utility model;

[0025] Figure 5 is a longitudinal sectional view of the connection between the second chimney body and the third chimney body of the present utility model;

[0026] Figure 6 is a cross-sectional view of the connection between the third chimney body and the chimney base of the present utility model;

[0027] Figure 7 is a longitudinal sectional view of the connection between the third chimney body and the chimney base of the present utility model;

[0028] Figure 8 is a schematic layout view of the inner lining anchor of the present utility model;

[0029] Figure 9 is a schematic structural view of the inner lining anchor of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment

[0032] Please refer to the attached drawings of the specification Figures 1-9 , this embodiment provides a chimney with high-temperature resistance and corrosion resistance functions. The chimney with high-temperature resistance and corrosion resistance functions includes:

[0033] A first cylinder body 1, a second cylinder body 2, a third cylinder body 3, and a chimney base 4. The third cylinder body 3 is fixedly connected to the chimney base 4 through a flange structure. The lower end of the second cylinder body 2 is fixedly connected to the third cylinder body 3, and the upper end of the second cylinder body 2 is fixedly connected to the first cylinder body 1. A flue 302 is provided on the side of the third cylinder body 3 close to the chimney base, and a soot cleaning port 301 is provided on the third cylinder body opposite to the flue 302. Silicate aluminum refractory fiber blankets 6 are provided at the joints between the first cylinder body 1 and the second cylinder body 2 and between the second cylinder body 2 and the third cylinder body 3. Linings 5 are provided on the inner walls of the first cylinder body 1, the second cylinder body 2, and the third cylinder body 3. A cylinder head 102 is further provided at the top of the first cylinder body 1;

[0034] The cylinder head 102 is made of 00Cr17Ni14Mo2 ultra-low carbon steel, the first cylinder body 1 and the second cylinder body 2 are made of Q235NH weathering steel, and the third cylinder body 3 is made of Q355NH weathering steel.

[0035] The chimney base 4 includes anchor bolts 401. The anchor bolts 401 pass through the flange structure on the third cylinder body 3, and nuts are provided on the anchor bolts 401 for fixing the flange structure on the third cylinder body 3 to the anchor bolts 401.

[0036] A plurality of lining anchor bolts 7 are fixedly provided on the inner walls of the first cylinder body 1, the second cylinder body 2, and the third cylinder body 3, and the lining anchor bolts 7 are arranged in a matrix.

[0037] The lining 5 is YT-2 type lightweight heat-insulating acid-resistant castable. The lining 5 is fixedly formed by pouring YT-2 type lightweight heat-insulating acid-resistant castable on the lining anchor bolts 7. The YT-2 type lightweight heat-insulating acid-resistant castable is entirely composed of acid-resistant and heat-resistant coarse and fine aggregates, powder, curing agent, and binder. The main technical indicators are: bulk density 1000~1200 kg / m3, at normal temperature, compressive strength >9 MPa, flexural strength >4 MPa, and thermal conductivity at normal temperature <0.25 W / (m·K). Anchor bolts are provided on the inner wall of the cylinder body to fix the castable and prevent it from collapsing or forming large and concentrated cracks.

[0038] The flue 302 is arranged at a position 1.5 m above the ground on the third cylinder body.

[0039] The ash cleaning port 301 is arranged at a position 2 m above the ground on the third cylinder body. The width of the ash cleaning port 301 is 1 m, and the height of the ash cleaning port is 0.5 m.

[0040] The heights of the first cylinder body 1, the second cylinder body 2, and the third cylinder body 3 are all 8 - 10 m.

[0041] The thickness of the aluminosilicate refractory fiber blanket 5 is 15 mm. When hoisting, by using the gravity of the chimney, the thickness of the aluminosilicate refractory fiber blanket 5 is pressed from 15 mm to 8 mm and compacted firmly. This setting can avoid secondary repair of the connection part after each section of the chimney is hoisted.

[0042] A circumferential reinforcing rib 101 is arranged at the upper end of the first cylinder body 1. The circumferential reinforcing rib 101 is used to connect the cylinder head 102 and the first cylinder body 1.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chimney with high temperature resistance and corrosion resistance functions, characterized in that, It includes a first barrel body, a second barrel body, a third barrel body and a chimney base. The third barrel body is fixedly connected to the chimney base through a flange structure. The lower end of the second barrel body is fixedly connected to the third barrel body, and the upper end of the second barrel body is fixedly connected to the first barrel body. A flue is provided on the side of the third barrel body close to the chimney base, and a soot cleaning port is provided on the third barrel body opposite to the flue. A silica-aluminum refractory fiber blanket is provided at the connection between the first barrel body and the second barrel body and at the connection between the second barrel body and the third barrel body. Linings are provided on the inner walls of the first barrel body, the second barrel body and the third barrel body, and a barrel head is provided at the top of the first barrel body. The lining is made of YT-2 type lightweight heat-insulating acid-resistant castable, and the lining is fixedly formed by casting the YT-2 type lightweight heat-insulating acid-resistant castable on lining anchor parts. The barrel head is made of 00Cr17Ni14Mo2 super-low carbon steel, the first barrel body and the second barrel body are made of Q235NH weathering steel, and the third barrel body is made of Q355NH weathering steel.

2. The chimney with high temperature resistance and corrosion resistance functions according to claim 1, characterized in that, The chimney base includes anchor bolts. The anchor bolts pass through the flange structure on the third barrel body, and nuts are provided on the anchor bolts. The nuts are used to fix the flange structure on the third barrel body to the anchor bolts.

3. The chimney with high temperature resistance and corrosion resistance functions according to claim 2, characterized in that, A plurality of lining anchor parts are fixedly provided on the inner walls of the first barrel body, the second barrel body and the third barrel body, and the lining anchor parts are arranged in a matrix.

4. The chimney with high temperature resistance and corrosion resistance functions according to claim 3, characterized in that, The flue is provided at a position 1.5 m above the ground on the third barrel body.

5. The chimney with high temperature resistance and corrosion resistance functions according to claim 4, characterized in that, The soot cleaning port is provided at a position 2 m above the ground on the third barrel body. The width of the soot cleaning port is 1 m, and the height of the soot cleaning port is 0.5 m.

6. The chimney with high temperature resistance and corrosion resistance functions according to claim 5, characterized in that, The heights of the first barrel body, the second barrel body and the third barrel body are all 8 - 10 m.

7. The chimney with high temperature resistance and corrosion resistance functions according to claim 6, characterized in that, The thickness of the silica-aluminum refractory fiber blanket is 15 mm.

8. The chimney with high temperature resistance and corrosion resistance functions according to claim 7, characterized in that, Circumferential reinforcing ribs are provided at the upper end of the first barrel body, and the circumferential reinforcing ribs are used to fixedly connect the first barrel body and the barrel head.

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