A return device with a detachable hood

Abstract

The utility model provides a kind of return material device of quick dismounting air cap, it is related to circulating fluidized bed boiler instrument technical field.A kind of return material device of quick dismounting air cap, including return material device main body and air cap, sleeve pipe is equipped between return material device main body and air cap, fixed layer is equipped between sleeve pipe and return material device main body, above-mentioned air cap is worn in above-mentioned sleeve pipe, and it is spot welding connection between sleeve pipe.The embodiment of the utility model provides a kind of return material device of quick dismounting air cap, relative to prior art, the installation and disassembly of its air cap are faster, can reduce overhaul operation time and labor intensity.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler return feeders, and more specifically, to a return feeder with a quick-release wind cap. Background Technology

[0002] my country has various forms of power generation, among which thermal power is an important source of electricity. Boilers are a crucial component of thermal power plants. In existing circulating fluidized bed boilers, the return feeder plays a vital role as a material circulation device. However, the air cap of the return feeder is a vulnerable component, often requiring large-scale replacement during boiler shutdowns for maintenance. Currently, the bottom of the air cap of the boiler return feeder is usually fixed with castable refractory. Each time the air cap is replaced during maintenance, the bottom castable refractory needs to be removed, wasting manpower and resources, resulting in a long construction period. Furthermore, the removal of the castable refractory generates dust, which greatly harms the health of construction workers. Utility Model Content

[0003] How to quickly replace the return feeder is a problem that needs to be solved in order to put the boiler into operation on schedule.

[0004] The embodiments of this utility model are implemented as follows:

[0005] A return material device with a quick-release and detachable air cap includes a return material device body and an air cap. A sleeve is provided between the return material device body and the air cap. A fixing layer is provided between the sleeve and the return material device body. The air cap is inserted through the sleeve and is spot-welded to the sleeve.

[0006] In this design, the vent cap is installed on the sleeve. When replacing the vent cap, it can be directly removed from inside the sleeve by tapping, eliminating the need to remove the original bottom grout as in the current installation. This also eliminates the dust generated during the removal of grout, protecting the health of construction workers to a certain extent, enabling quick disassembly and assembly, reducing maintenance time and labor intensity, and saving maintenance costs.

[0007] In some technical solutions of this utility model, the aforementioned fixing layer is a castable refractory layer.

[0008] The casing and the main body of the return feeder are fixed together by a layer of castable refractory. The main components of the boiler castable refractory include aggregates and powders made of high-temperature resistant or high-temperature wear-resistant products such as refractory clay, kaolin, dolomite, expanded perlite, and silicates. The castable refractory has high temperature resistance, corrosion resistance, good strength and toughness, and is easy to construct.

[0009] In some technical solutions of this utility model, the aforementioned wind caps are spaced through the aforementioned sleeves.

[0010] The spacing setting prevents the wind cap from getting stuck when it deforms due to heat, making subsequent wind cap assembly and disassembly more efficient and easier to maintain.

[0011] In some technical solutions of this utility model, the distance between the outer side of the wind cap and the inner wall of the sleeve is less than or equal to 0.5 mm.

[0012] A gap of 0.5mm or less ensures that the vent cap will not get stuck with the sleeve when it is deformed by heat, and also prevents the gap from being too large, which would affect the fit between the vent cap and the sleeve.

[0013] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0014] The return feeder is equipped with a sleeve, which is connected to the main body of the return feeder using a fixing layer. Then, the air cap is connected to the sleeve by electric welding. Disassembly only requires breaking the weld. Compared with the existing technology, the air cap is installed and disassembled faster, which can reduce maintenance time and labor intensity. Attached Figure Description

[0015] 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 on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of a return feeder with a quick-release vent cap according to an embodiment of the present utility model;

[0017] Figure 2 This is a partial structural diagram of a return feeder with a quick-release vent cap, according to an embodiment of this utility model.

[0018] Icons: 1-Returner body, 2-Wind cap, 3-Sleeve, 4-Fixing layer. Detailed Implementation

[0019] Example

[0020] Please refer to Figures 1-2 A return material device with a quick-release and detachable hood includes a return material device body 1 and a hood 2. A sleeve 3 is provided between the return material device body 1 and the hood 2. A fixing layer 4 is provided between the sleeve 3 and the return material device body 1. The hood 2 passes through the sleeve 3 and is spot-welded to the sleeve 3.

[0021] The principle of this return feeder is as follows: The core tube and the sleeve 3 are spot-welded together. Then, the sleeve 3 is installed into the position of the air cap 2 in the main body 1 of the return feeder using the fixing layer 4, so that the sleeve 3 is stably installed in the main body 1 of the return feeder, and the installation of the air cap 2 is completed. When it is necessary to replace the air cap 2 in the main body 1 of the return feeder, it is not necessary to remove the bottom refractory of the air cap 2 as in the existing technology. Simply tap the air cap 2 lightly to dislodge the weld between the air cap 2 and the sleeve 3. If the air cap 2 and the weld are not separated after tapping, the weld can be cut with a tool to remove the damaged air cap 2 from the sleeve 3, achieving convenient and quick disassembly. Then, the new air cap 2 is placed in the sleeve 3 and installed on the sleeve 3 using electric welding, and the replacement is completed.

[0022] In this design, the vent cap 2 is installed on the sleeve 3. When replacing the vent cap 2, it can be directly removed from the sleeve 3 by tapping, without having to remove the original bottom grout as in the current installation. This also eliminates the dust generated when removing the grout, which to some extent protects the health of construction workers, enables quick disassembly and installation, reduces maintenance time and labor intensity, and saves maintenance costs.

[0023] In a preferred embodiment, the aforementioned fixing layer 4 is a castable refractory layer.

[0024] In the above embodiment, the sleeve 3 is installed in the position of the wind cap 2 of the return feeder body 1, and then the castable is injected into the gap between the sleeve 3 and the return feeder to form a castable layer; the sleeve 3 and the return feeder body 1 are fixed by the castable layer. The main components of the boiler castable include refractory clay, kaolin, dolomite, expanded perlite, silicate and other high temperature resistant or high temperature wear resistant products made of aggregates and powders; the castable has high temperature resistance, corrosion resistance and good strength and toughness, and is easy to construct.

[0025] In a preferred embodiment, the wind cap 2 is spaced through the sleeve 3.

[0026] In the above embodiments, the interval setting can prevent the wind cap 2 from getting stuck when it is deformed by heat, making the subsequent disassembly and assembly of the wind cap 2 more efficient and easier to maintain.

[0027] In a preferred embodiment, the distance between the outer side of the wind cap 2 and the inner wall of the sleeve 3 is less than or equal to 0.5 mm.

[0028] In the above embodiments, a gap distance of less than or equal to 0.5 mm ensures that the hood 2 will not get stuck with the sleeve 3 when it is deformed by heat, and also prevents the gap from being too large, which would affect the fit between the hood 2 and the sleeve 3.

[0029] In summary, the embodiments of this utility model provide a return material device for quick disassembly and assembly of the air cap. The air cap 2 is installed on the sleeve 3. When replacing the air cap 2, the air cap 2 can be directly taken out and replaced inside the sleeve 3 without removing the original bottom casting material, thus achieving quick disassembly and assembly, reducing maintenance time and labor intensity, and saving maintenance costs.

[0030] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A material returning device with a detachable hood, comprising a material returning device body (1) and a hood (2), a sleeve (3) being arranged between the material returning device body (1) and the hood (2), and a fixing layer (4) being arranged between the sleeve (3) and the material returning device body (1), characterized in that, The wind cap (2) is inserted through the sleeve (3) and is spot-welded to the sleeve (3).

2. The fast-disassembly hooded returner (2) according to claim 1, characterized in that, The fixing layer (4) is a casting material layer.

3. A returner with a quick detachable hood (2) according to claim 1, characterized in that, The wind cap (2) is spaced through the sleeve (3).

4. A returner with a quick detachable hood (2) according to claim 3, characterized in that, The distance between the outer side of the wind cap (2) and the inner wall of the sleeve (3) is less than or equal to 0.5 mm.

Images