Preheater air pipe with good heat insulation effect

Abstract

The utility model provides a preheater air pipe with a good heat insulation effect, and relates to the technical field of preheater air pipes, the preheater air pipe comprises a pipe body, a heat insulation layer and a castable layer, the heat insulation layer is arranged on the inner wall of the pipe body, and the castable layer is arranged on the inner wall of the heat insulation layer; the heat insulation layer comprises a plurality of nanometer heat insulation plates; the heat insulation layer is formed by splicing a plurality of nanometer heat insulation plates, and the nanometer heat insulation plates are made of nanometer heat insulation materials and have excellent heat preservation and heat insulation performance, so that the internal temperature of the air pipe is constant, the heat dissipation loss of the air pipe can be effectively reduced, the preheating temperature of raw materials conveyed to the rotary kiln from a preheater is increased, heating is more uniform, and water evaporation is more thorough; energy consumption of the rotary kiln is reduced, and production is stable and efficient; the nanometer heat insulation plates are clamped with the pipe body, the castable layer and the adjacent nanometer heat insulation plates, so that the nanometer heat insulation plates are stable and reliable in installation and not prone to displacement and separation, and the whole air pipe of the preheater is tightly and firmly connected.

Description

Technical Field

[0001] The present application relates to the technical field of preheater air ducts, and in particular to a preheater air duct with good thermal insulation effect. Background Art

[0002] The preheater uses the flue gas in the flue at the tail end of the boiler to preheat the air before entering the boiler to a certain temperature through the internal heat sink, which is used to improve the heat exchange performance of the boiler and reduce energy consumption. The existing preheater air duct has a large heat loss, which makes the raw materials transported from the preheater to the rotary kiln have problems such as low preheating temperature, uneven heating, high moisture content, etc., which increases fuel consumption. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a preheater air duct with good thermal insulation effect, which can solve the technical problem that the heat loss in the existing preheater air duct is large, resulting in the raw materials transported from the preheater to the rotary kiln having low preheating temperature, uneven heating, high moisture content, etc., thereby increasing fuel consumption.

[0004] The embodiment of the present application provides a preheater air duct with good thermal insulation effect, comprising a pipe body, a thermal insulation layer and a castable layer, wherein the thermal insulation layer is arranged on the inner wall of the pipe body, and the castable layer is arranged on the inner wall of the thermal insulation layer;

[0005] The thermal insulation layer comprises a plurality of nano thermal insulation boards, which are spliced ​​to form the thermal insulation layer. The nano thermal insulation boards are clamped to the tube body, the nano thermal insulation boards are clamped to the casting material layer, and the nano thermal insulation boards are clamped to adjacent nano thermal insulation boards.

[0006] Wherein, the inner wall of the nano heat insulation board is provided with a first clamping block, the outer wall of the casting material layer is provided with a first clamping groove, and the first clamping block is used in conjunction with the first clamping groove.

[0007] Wherein, the outer wall of the nano heat insulation board is provided with a second clamping block, the inner wall of the tube body is provided with a second clamping groove, and the second clamping block is used in conjunction with the second clamping groove.

[0008] Wherein, a third clamping block is arranged at the right end of the nano heat insulation board, and a third clamping slot is opened at the left end of the nano heat insulation board, and the third clamping block is used in conjunction with the third clamping slot.

[0009] Wherein, a fourth clamping block is arranged at the upper end of the nano heat insulation board, and a fourth clamping groove is opened at the lower end of the nano heat insulation board, and the fourth clamping block is used in conjunction with the fourth clamping groove.

[0010] Among them, two adjacent layers of nano-insulation panels are staggered.

[0011] Wherein, the nano heat insulation board is hollow.

[0012] Wherein, reinforcing ribs are embedded on the casting material layer.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a preheater air duct with good thermal insulation effect. The thermal insulation layer is formed by splicing a plurality of nano thermal insulation boards. The nano thermal insulation board is made of nano thermal insulation material and has excellent thermal insulation performance, so that the internal temperature of the air duct is constant, and the heat dissipation loss of the air duct can be effectively reduced, so that the preheating temperature of the raw materials transported from the preheater to the rotary kiln is increased, the heating is more uniform, and the water evaporates more thoroughly, thereby reducing the energy consumption of the rotary kiln and achieving stable and efficient production; the nano thermal insulation board is clamped with the pipe body, the castable layer, and the adjacent nano thermal insulation board, so that the nano thermal insulation board can be installed stably and reliably, is not easy to shift and detach, and the overall connection of the preheater air duct is tight and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall top view cross-sectional structure in some embodiments of the present application;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0018] Figure 3 It is a schematic diagram of the front view structure of a single nano thermal insulation board in some embodiments of the present application;

[0019] Figure 4 This is a front view structural schematic diagram of the splicing state of multiple nano-insulation panels in some embodiments of the present application.

[0020] The reference numerals are:

[0021] 1. tube body; 11. second clamping groove;

[0022] 2. Insulation layer; 21. Nano insulation board; 22. First clamping block; 23. Second clamping block; 24. Third clamping block; 25. Third clamping slot; 26. Fourth clamping block; 27. Fourth clamping slot;

[0023] 3. Casting material layer; 31. First clamping groove; 32. Reinforcing rib. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] like Figures 1 to 4 As shown, the embodiment of the present application provides a preheater air duct with good thermal insulation effect, comprising a pipe body 1, a thermal insulation layer 2 and a castable layer 3, wherein the thermal insulation layer 2 is arranged on the inner wall of the pipe body 1, and the castable layer 3 is arranged on the inner wall of the thermal insulation layer 2;

[0031] The thermal insulation layer 2 includes a plurality of nano thermal insulation boards 21 , which are spliced ​​to form the thermal insulation layer 2 , the nano thermal insulation boards 21 are clamped to the tube body 1 , the nano thermal insulation boards 21 are clamped to the casting material layer 3 , and the nano thermal insulation boards 21 are clamped to adjacent nano thermal insulation boards 21 .

[0032] The heat insulation layer 2 is formed by splicing a plurality of nano heat insulation boards 21. The nano heat insulation boards 21 are made of nano heat insulation materials and have excellent thermal insulation properties, so that the internal temperature of the air duct is constant, which can effectively reduce the heat dissipation loss of the air duct, so that the preheating temperature of the raw materials transported from the preheater to the rotary kiln is increased, the heating is more uniform, and the water evaporates more thoroughly, thereby reducing the energy consumption of the rotary kiln and achieving stable and efficient production; the nano heat insulation board 21 is clamped with the pipe body 1, the castable layer 3, and the adjacent nano heat insulation board 21, so that the nano heat insulation board 21 is stably and reliably installed, not easy to shift and detach, and the overall connection of the preheater air duct is tight and firm.

[0033] like Figure 1 and 2 As shown, in this embodiment, the inner wall of the nano thermal insulation board 21 is provided with a first clamping block 22, and the outer wall of the casting material layer 3 is provided with a first clamping groove 31, and the first clamping block 22 is used in conjunction with the first clamping groove 31; the nano thermal insulation board 21 is tightly and firmly connected to the casting material layer 3.

[0034] like Figures 1 to 4 As shown, in this embodiment, the outer wall of the nano heat insulation board 21 is provided with a second clamping block 23, the inner wall of the tube body 1 is provided with a second clamping groove 11, and the second clamping block 23 is used in conjunction with the second clamping groove 11; the nano heat insulation board 21 is tightly and firmly connected to the tube body 1.

[0035] like Figures 1 to 4 As shown, in this embodiment, a third clamping block 24 is provided at the right end of the nano thermal insulation board 21, and a third clamping groove 25 is opened at the left end of the nano thermal insulation board 21, and the third clamping block 24 and the third clamping groove 25 are used in conjunction with each other; the nano thermal insulation boards 21 on the same layer are connected tightly and firmly.

[0036] like Figure 3 and 4 As shown, in this embodiment, a fourth clamping block 26 is provided at the upper end of the nano thermal insulation board 21, and a fourth clamping groove 27 is opened at the lower end of the nano thermal insulation board 21, and the fourth clamping block 26 and the fourth clamping groove 27 are used in conjunction with each other; the upper and lower nano thermal insulation boards 21 are tightly and firmly connected.

[0037] like Figure 4 As shown, in this embodiment, two adjacent layers of nano-insulation boards 21 are staggered, which further improves the connection stability of the upper and lower nano-insulation boards 21.

[0038] like Figure 1 and 2 As shown, in this embodiment, the nano heat insulation board 21 is hollow; the hollow nano heat insulation board 21 can reduce the overall weight of the preheater air duct, save materials, and save production costs.

[0039] like Figure 1 and 2 As shown, in this embodiment, reinforcing ribs 32 are embedded in the casting material layer 3; the reinforcing ribs 32 can improve the structural strength of the casting material layer 3, making the casting material layer 3 stronger and extending the service life.

[0040] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A preheater air duct with good heat insulation effect, characterized in that: It comprises a pipe body (1), a heat insulation layer (2) and a casting material layer (3), wherein the heat insulation layer (2) is arranged on the inner wall of the pipe body (1), and the casting material layer (3) is arranged on the inner wall of the heat insulation layer (2); The thermal insulation layer (2) comprises a plurality of nano thermal insulation boards (21), wherein the plurality of nano thermal insulation boards (21) are spliced ​​together to form the thermal insulation layer (2), the nano thermal insulation boards (21) are clamped to the tube body (1), the nano thermal insulation boards (21) are clamped to the casting material layer (3), and the nano thermal insulation boards (21) are clamped to adjacent nano thermal insulation boards (21).

2. The preheater air duct with good heat insulation effect according to claim 1, characterized in that: The inner wall of the nano heat insulation board (21) is provided with a first clamping block (22), the outer wall of the casting material layer (3) is provided with a first clamping groove (31), and the first clamping block (22) and the first clamping groove (31) are used in conjunction with each other.

3. The preheater air duct with good heat insulation effect according to claim 1, characterized in that: The outer wall of the nano heat insulation board (21) is provided with a second clamping block (23), the inner wall of the tube body (1) is provided with a second clamping groove (11), and the second clamping block (23) is used in conjunction with the second clamping groove (11).

4. The preheater air duct with good heat insulation effect according to claim 1, characterized in that: The right end of the nano heat insulation board (21) is provided with a third clamping block (24), and the left end of the nano heat insulation board (21) is provided with a third clamping slot (25), and the third clamping block (24) is used in conjunction with the third clamping slot (25).

5. The preheater air duct with good heat insulation effect according to claim 1, characterized in that: The upper end of the nano heat insulation board (21) is provided with a fourth clamping block (26), and the lower end of the nano heat insulation board (21) is provided with a fourth clamping groove (27), and the fourth clamping block (26) is used in conjunction with the fourth clamping groove (27).

6. The preheater air duct with good heat insulation effect according to claim 1, characterized in that: Two adjacent layers of the nano heat insulation panels (21) are arranged in a staggered manner.

7. The preheater air duct with good heat insulation effect according to claim 1, characterized in that: The nano heat insulation board (21) is hollow.

8. The preheater air duct with good heat insulation effect according to claim 1, characterized in that: Reinforcing ribs (32) are embedded in the casting material layer (3).

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