Combustor head castable protection device

Abstract

The utility model discloses a burner head castable protection device, and relates to the field of burner head aggregate cleaning for rotary kilns, the burner head castable protection device comprises a protection sleeve, the protection sleeve comprises a shell used for sealing and covering burner head castable, the shell is in a hollow cylindrical shape, one end of the shell is open, and the other end of the shell is provided with a through hole matched with the burner head; the shell is welded to the head of the combustor through an anchoring part of the combustor and / or a supporting part arranged on the inner wall of the protective sleeve, and a gap used for pouring the pouring materials is formed between the shell and the head of the combustor in a spaced mode, so that the poured pouring materials are wrapped by the protective sleeve to be protected. According to the burner, the protective sleeve is arranged at the head position of the burner and used for wrapping and protecting the poured castable, so that the castable can fall onto the protective sleeve, the castable is prevented from being damaged when coke is cleaned, the coke can be cleaned in all directions, meanwhile, the outer surface of the protective sleeve is smooth and easy to clean, and practicability is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of burner head material collection cleaning for rotary kiln, especially to the castable protection device of burner head. BACKGROUND

[0002] The use of the kiln head pulverized coal burner currently used in the cement industry rotary kiln plays a vital role in calcining quality. In the rotary kiln operation process, the clinker in the rotary kiln is taken up by the rotating rotary kiln from the kiln tail to the kiln port, when the clinker is transported to the kiln port position, the high temperature sticky clinker (about 1300℃) is separated when the rotary kiln rotates to the highest point, which is easy to fall on the head of the pulverized coal burner, as the temperature drops, the clinker particles are bonded into solid coking, which blocks the burner air duct, affects the flame shape and affects the working condition of the burner.

[0003] Therefore, the burner head material needs to be cleaned from time to time, but in the cleaning process, the castable of the burner head (the castable of the rotary kiln burner head is mainly used to protect the burner from high temperature, chemical corrosion and mechanical wear, and ensure the stable operation of the equipment) is easy to be damaged.

[0004] In the prior art, such as Chinese practical patent authorized publication No. CN204730629U, it discloses a device for preventing the accumulation of materials on the head of a burner for a rotary kiln, which is characterized by including a burner, a triangular shape cast on the head of the burner 0.8-2 meters above, a pipe is arranged inside the cast of the burner, the pipe passes through the head of the burner, and compressed air is supplied to the pipe to blow off the accumulated materials on the head of the burner.

[0005] In the prior art, such as Chinese practical patent authorized publication No. CN 205228126 U, it discloses a device for quickly cleaning the accumulated materials on the head of a pulverized coal burner for a rotary kiln, which includes a refractory cast layer wrapped around the outer periphery of the pulverized coal burner, and a refractory cast layer of heat-resistant steel pipe with a bent pipe at both ends is embedded in the refractory cast layer, one end of the heat-resistant steel pipe is connected with an air cannon, and the air cannon is connected in communication with the clinker column near the end of the head of the pulverized coal burner through the heat-resistant steel pipe.

[0006] The existing technology generally uses compressed gas blowing to remove the clinker column, because the burner is a cylindrical structure, the coking accumulated on the head will be dispersed along the burner (as shown in Figure 4 The area of compressed gas blowing is limited, and only the coking outside the tuyere can be removed, and when blowing, the coking adheres to the castable, which may still cause damage to the castable, and the practicability is poor. UTILITY MODEL CONTENTS

[0007] In order to overcome the above-mentioned defects of the prior art, the utility model provides a burner head castable protection device to solve the problems of effective coking cleaning effect in the above background art, and the castable may still be damaged during cleaning.

[0008] The utility model provides the following technical scheme: a burner head castable protection device, including a protective sleeve, the protective sleeve includes a shell for covering the burner head, the shell is hollow cylindrical, and one end is open, the other end is provided with a through hole matched with the burner head;

[0009] The shell is welded on the head of the burner through the anchor of the burner and / or the support arranged on the inner wall of the protective sleeve, and has a gap for pouring castables between the shell and the burner head, so that the protective sleeve wraps the poured castables to protect them.

[0010] Beneficial effect: a protective sleeve is arranged at the head position of the burner, which wraps the poured castables to protect them, so that the material falls into the protective sleeve, avoids the damage of the castables during coking cleaning, and can clean the coking in all directions, and the smooth outer surface of the protective sleeve is easy to clean, greatly improving the practicability.

[0011] Preferably, the protective sleeve is coaxially arranged with the head of the burner, so that the gap formed is an annular shape.

[0012] Through the above technical means, the poured castables have an annular structure, and the thickness of each part is the same, improving the protection of the burner.

[0013] Preferably, the number of supports is multiple, and the multiple supports are uniformly arranged along the circumferential direction of the shell.

[0014] Through the above technical means, according to the diameter of the protective sleeve, a corresponding number of supports are selected to improve the stability of the protective sleeve installation.

[0015] Preferably, the support is a rectangular plate structure, and the two adjacent surfaces are in close contact with the inner wall of the protective sleeve for supporting the protective sleeve.

[0016] Through the above technical means, the strength of the shell is improved to prevent deformation.

[0017] Preferably, the support is a cylindrical structure.

[0018] Preferably, the protective sleeve is made of NG material.

[0019] Preferably, the outer surface of the protective sleeve is smooth.

[0020] Through the above technical means, the coking on the protective sleeve is easy to clean.

[0021] Preferably, the protective sleeve has a length of 150-300mm and a wall thickness of 5-15mm. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The figure is a structural schematic diagram of the burner of the present application.

[0023] Figure 2 The figure is a main view schematic diagram of the coking distribution of the present application.

[0024] Figure 3 The figure is a side view schematic diagram of the coking distribution of the present application.

[0025] Figure 4 The figure is a three-dimensional structural schematic diagram of the protective sleeve of the embodiment 1 of the present application.

[0026] Figure 5 The figure is a schematic diagram of the installation structure of the protective sleeve of the present application.

[0027] Figure 6 The figure is a schematic diagram of the coking structure of the protective sleeve of the present application.

[0028] Figure 7 The figure is a schematic diagram of the cross-sectional structure of the protective sleeve of the present application.

[0029] Figure 8 The figure is a three-dimensional structural schematic diagram of the protective sleeve of the embodiment 2 of the present application.

[0030] The figures are marked as:

[0031] 100, protective sleeve; 101, shell; 102, support; 103, through hole;

[0032] 200, burner; 201, anchor; 202, castable;

[0033] 300, void;

[0034] 400, coking. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined.

[0036] Embodiment 1

[0037] The burner head castable protection device, such as Figure 1As shown, the burner 200 is a cylindrical structure, and the outer tube surface of the burner 200 is welded with a plurality of anchor pieces 201, and the outer tube of the burner 200 is further cast with a layer of castable 202. The anchor pieces 201 are used to reinforce the cast castable 202, and the castable 202 is mainly used to protect the burner from high temperature, chemical corrosion and mechanical wear, and to ensure stable operation of the equipment.

[0038] As shown in the drawings, Figures 2-3 The material brought by the rotary kiln is easy to fall on the head of the burner 200, which is easy to cause coking 400 under the action of high temperature, and the castable 202 is easy to be damaged when cleaning the coking 400.

[0039] Therefore, a protective sleeve 100 is arranged at the head position of the burner 200, as shown in the drawings, Figure 4 For protecting the castable 202 at the head of the burner 200. Specifically, the protective sleeve 100 includes a shell 101 for covering the head of the burner 200, the shell 101 is in a hollow cylindrical shape, and one end is open, and the other end is provided with a through hole 103 matched with the head of the burner 200.

[0040] As shown in the drawings, Figure 5 The shell 101 can be welded on the head of the burner 200 through the anchor pieces 201 of the burner 200 when assembled. It can also be welded on the outer tube of the head of the burner 200 through the support pieces 102 arranged on the inner wall of the protective sleeve 100, or simultaneously welded on the head of the burner 200 through the anchor pieces 201 and the support pieces 102. At the same time, the shell 101 and the burner 200 can be increased by the anchor pieces 201 and the support pieces 102, so as to improve the stability of the shell 101.

[0041] As shown in the drawings, Figure 5 The shell 101 and the head of the burner 200 are spaced apart after assembly, and the gap 300 is used for casting the castable 202.

[0042] As shown in the drawings, Figure 6 After assembly, the castable 202 is casted, so that the castable 202 after casting is wrapped by the protective sleeve 100 for protection. In this way, the material will fall into the protective sleeve 100, avoiding direct contact of the material with the castable 202, and the castable 202 is not easy to be damaged when cleaning the coking material 400 at the head of the burner 200, so as to achieve the purpose of protection, and the outer surface of the protective sleeve 100 is smooth and easy to clean the coking 400.

[0043] Further, the protective sleeve 100 and the head of the burner 200 are coaxially arranged, so that the gap 300 formed is an annular shape, and by this way of design, the castable 202 is in an annular structure, and the thickness of each part is the same, which improves the protection of the burner 200.

[0044] As Figure 4 , Figure 7 shown in the embodiment, the support 102 is a rectangular plate structure, and the number is three, which can be adjusted according to the diameter of the protective sleeve 100. The three supports 102 are uniformly arranged along the circumferential direction of the shell 101. Specifically, the two surfaces of a single support 102 are in close contact with the inner wall of the protective sleeve 100 for supporting the protective sleeve 100, improving the strength of the shell 101, and preventing deformation. During welding, the three supports 102 are welded with the outer pipe of the burner 100, and the three supports 102 jointly support and connect the shell 101, improving the stability of the shell 101 installation.

[0045] In the embodiment, the protective sleeve 100 is made of NG material, and the NG material is an engineering plastic alloy. Specifically, one of NGA, NGB, NGC, NGD, NGE, etc. can be selected.

[0046] In the embodiment, the outer surface of the protective sleeve 100 is smooth, which is convenient for cleaning the coking 400 on the protective sleeve 100.

[0047] In the embodiment, the length of the protective sleeve 100 is 200mm, and the wall thickness is 10mm.

[0048] Use process: The protective sleeve 100 is sleeved on the head of the burner 200, and the protective sleeve 100 and the head of the burner 200 are kept coaxial, then the shell is welded on the burner 200 by using the anchor 201 or the support 102, and finally the castable 202 is poured, so that the protective sleeve 100 wraps the castable 202 on the burner head, so that the material falls into the protective sleeve 100, avoiding the castable 202 being damaged during cleaning coking 400, and the smooth outer surface of the protective sleeve 100 is easy to clean the coking 400.

[0049] Embodiment 2

[0050] The main difference from embodiment 1 is that the support 102 is a cylindrical structure, one end surface of which is used for welding the protective sleeve 100, and the other end surface is used for welding on the outer pipe of the burner 200. The number of supports 102 is three, which can be adjusted according to the diameter of the protective sleeve 100.

[0051] In the embodiment, the length of the protective sleeve 100 is 150mm, and the wall thickness is 5mm.

[0052] Embodiment 3

[0053] The main difference from embodiment 1 is that the length of the protective sleeve 100 is 300mm, and the wall thickness is 15mm.

[0054] It should be noted that: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0055] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments, but any equivalent modifications or changes made by those skilled in the art according to the disclosed content of the present application shall be included in the protection scope recorded in the claims.

Claims

1. A burner head cast protection device comprising a protective sleeve (100), characterized in that: The protective sleeve (100) comprises a shell (101) for covering the head of the burner (200), the shell (101) is hollow cylindrical, one end is open, and the other end is provided with a through hole (103) matched with the head of the burner (200); The shell (101) is welded on the head of the burner (200) through the anchor (201) of the burner (200) and / or the support (102) arranged on the inner wall of the protective sleeve (100), and is spaced from the head of the burner (200) to form a gap (300) for pouring the castable (202), so that the protective sleeve (100) protects the poured castable (202).

2. The burner head castable protection apparatus of claim 1, wherein: The protective sleeve (100) is coaxially arranged with the head of the burner (200), so that the gap (300) formed is annular.

3. The burner head castable protection apparatus of claim 1, wherein: The number of the support (102) is multiple, and the multiple supports (102) are uniformly arranged along the circumferential direction of the shell (101).

4. The burner head castable protection apparatus of claim 3, wherein: The support (102) is rectangular plate structure, and two adjacent surfaces are in close contact with the inner wall of the protective sleeve (100) for supporting the protective sleeve (100).

5. The burner head castable protection apparatus of claim 3, wherein: The support (102) is cylindrical structure.

6. A burner head cast protection device according to any one of claims 1-5, characterized in that: The protective sleeve (100) is made of NG material.

7. The burner head castable protection apparatus of claim 6, wherein: The outer surface of the protective sleeve (100) is smooth.

8. The burner head castable protection apparatus of claim 6, wherein: The length of the protective sleeve (100) is 150-300mm, and the wall thickness is 5-15mm.

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