Protective structure for water wall tube of CFB (circulating fluid bed) boiler

Abstract

The utility model discloses a CFB boiler water-cooled wall tube protection structure which comprises a plurality of protection tiles arranged on the peripheral side face of a water-cooled wall tube in an array mode, the protection tiles are connected with the water-cooled wall tube through tightening assemblies, clamping protrusions are arranged at one ends of the protection tiles, clamping grooves are formed in the other ends of the protection tiles, the clamping grooves are matched with the clamping protrusions, and inserting holes are formed in the middle portions of the protection tiles. The tightening assembly comprises a fixing steel sheet arranged on the inner side of the protective tile, a connecting bolt is integrally arranged on the side face of the periphery of the fixing steel sheet, the connecting bolt is matched with the inserting hole, and the two ends of the fixing steel sheet are connected through a buckle assembly. Firstly, the fixing steel sheets are connected with the protective tiles, then the two ends of the fixing steel sheets are in butt joint through the buckle assemblies, the protective tiles are fixed to the outer side of the water-cooled wall tube, and the multiple protective tiles completely cover and are fixed to the outer side of the water-cooled wall tube in the axis direction of the water-cooled wall tube. The use number of the protective tiles can be selected according to the length of the water-cooled wall tube, the fixing steel sheets are directly buckled on the outer side of the water-cooled wall tube through the buckle assemblies, installation, disassembly and replacement are very convenient, and practicability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler equipment, in particular to a CFB boiler water-cooled wall tube protection structure. Background Art

[0002] The water-cooled wall tubes in the boiler are mainly heated by water circulation to form hot steam for the turbine to generate electricity. The hot steam is also used for heating. In the process of water heating, a large amount of coal is needed in the boiler for combustion circulation so that the water temperature in the water-cooled wall tubes can be continuously heated and heated. At the same time, a large amount of combustible coal circulates in the furnace, and the coal ash mixed with other materials circulates and burns in the furnace continuously, causing wear on the water-cooled wall tubes. The patent number is "CN214745654U", and the patent name is "A kind of protective tile and boiler system". It is a utility model patent. The protective tile is arranged around the water-cooled wall tube. The protective tile is made of heat-resistant steel. The model of the heat-resistant steel is X2CrNiMo25-22-2. The cross-section of the protective tile is an arc shape, and the inner wall of the protective tile abuts against the outer wall of the water-cooled wall tube.

[0003] However, the above protection structure still has certain disadvantages in certain usage situations: on the one hand, the above protection structure is connected to the outside of the water-cooled wall tube as a whole, needs to be customized according to the length of the water-cooled wall tube, and cannot be adjusted according to the length of the water-cooled wall tube. The installation length of the above protection structure is not convenient during installation. Therefore, a CFB boiler water-cooled wall tube protection structure is proposed to solve the above defects. Summary of the invention

[0004] The utility model overcomes the shortcomings of the prior art and provides a CFB boiler water-cooled wall tube protection structure.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a CFB boiler water-cooled wall tube protection structure, comprising: a plurality of protective tiles arranged in an array on the outer peripheral side of the water-cooled wall tube, the protective tiles are connected to the water-cooled wall tube through a clamping assembly, a clamping protrusion is provided at one end of the protective tile, a clamping groove is provided at the other end of the protective tile, the clamping groove and the clamping protrusion cooperate with each other, and a socket is provided in the middle part of the protective tile; the clamping assembly comprises: a fixed steel sheet arranged on the inner side of the protective tile, a connecting bolt is integrally provided on the outer peripheral side of the fixed steel sheet, the connecting bolt cooperates with the socket, and the two ends of the fixed steel sheet are connected to each other through a buckle assembly.

[0006] In a preferred embodiment of the utility model, a mounting groove is provided in the middle portion of the protective tile, and the mounting groove cooperates with the fixing steel sheet.

[0007] In a preferred embodiment of the utility model, two groups of limiting protrusions are symmetrically arranged at both ends of the assembly groove, and the limiting protrusions are integrally arranged with the protective tile.

[0008] In a preferred embodiment of the utility model, two positioning grooves are symmetrically arranged on the inner side surface of the protective tile, and two positioning protrusions are symmetrically arranged on the outer side surface of the fixing steel sheet, and the positioning grooves and the positioning protrusions cooperate with each other.

[0009] In a preferred embodiment of the utility model, the width of the fixed steel sheet gradually increases from the connecting bolts toward both sides.

[0010] In a preferred embodiment of the utility model, a limiting block is integrally arranged on the side of the clamping groove, a limiting groove is arranged on one side of the clamping protrusion, and the limiting block and the limiting groove are butted against each other.

[0011] In a preferred embodiment of the utility model, the snap-on assembly includes: a first connecting block integrally arranged at one end of the fixed steel sheet, a snap-on interface being arranged on the side of the first connecting block, a second connecting block being arranged at the other end of the fixed steel sheet, an elastic snap-on assembly being arranged on the side of the second connecting block, and the elastic snap-on assembly cooperates with the snap-on interface.

[0012] The utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0013] (1) The utility model first connects the fixed steel sheet with the protective tile, then butts the two ends of the fixed steel sheet through the buckle assembly, fixes the protective tile on the outside of the water-cooled wall tube, and then butts the protective tiles in sequence until multiple protective tiles are completely covered and fixed on the outside of the water-cooled wall tube along the axial direction of the water-cooled wall tube. The number of protective tiles to be used can be selected according to the length of the water-cooled wall tube, and the fixed steel sheet can be directly buckled on the outside of the water-cooled wall tube through the buckle assembly, which is very convenient for installation and removal and replacement, and has better practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 It is a three-dimensional structural diagram of a preferred embodiment of the utility model;

[0016] Figure 2 It is a three-dimensional structural diagram of the protective tile of the preferred embodiment of the utility model;

[0017] Figure 3 It is a three-dimensional structural diagram of the tightening hoop assembly of the preferred embodiment of the utility model;

[0018] Figure 4 It is a cross-sectional schematic diagram of a preferred embodiment of the utility model;

[0019] Figure 5 yes Figure 4 The enlarged schematic diagram of point A in the middle;

[0020] Figure 6 It is a three-dimensional structural diagram of the preferred embodiment of the utility model after the protective tile is fixed to the side of the water-cooled wall tube.

[0021] Specifically, 1. water-cooled wall tube; 2. protective tile; 3. snap-on protrusion; 4. snap-on groove; 5. fixing steel sheet; 6. connecting bolt; 7. assembly groove; 8. limiting protrusion; 9. positioning groove; 10. positioning protrusion; 11. jack; 12. snap assembly; 1201. first connecting block; 1202. snap interface; 1203. second connecting block; 1204. elastic snap; 13. limiting block; 14. limiting groove. DETAILED DESCRIPTION

[0022] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] like Figure 1 , Figure 2 and Figure 6 As shown, a CFB boiler water-cooled wall tube protection structure comprises: a plurality of protective tiles 2 arranged in an array on the outer peripheral side of the water-cooled wall tube 1, the protective tiles 2 being connected to the water-cooled wall tube 1 through a clamping assembly, a clamping protrusion 3 being provided at one end of the protective tile 2, a clamping groove 4 being provided at the other end of the protective tile 2, the clamping groove 4 and the clamping protrusion 3 cooperating with each other, and at the same time, a limiting block 13 is integrally provided on the side of the clamping groove 4, a limiting groove 14 is provided on one side of the clamping protrusion 3, the limiting block 13 and the limiting groove 14 are butted against each other, so that two protective tiles 2 can be quickly butted against each other, and installation and disassembly are more convenient.

[0024] like Figure 3 and Figure 4 As shown, the clamp assembly includes: a fixed steel sheet 5 arranged inside the protective tile 2, a connecting bolt 6 is integrally arranged on the outer peripheral side of the fixed steel sheet 5, a plug hole 11 is arranged in the middle of the protective tile 2, the connecting bolt 6 and the plug hole 11 cooperate with each other, and the two ends of the fixed steel sheet 5 are connected to each other through a buckle assembly 12. First, the fixed steel sheet 5 is connected to the protective tile 2, and then the two ends of the fixed steel sheet 5 are docked through the buckle assembly 12, the protective tile 2 is fixed to the outside of the water-cooled wall tube 1, and then the protective tiles 2 are docked in sequence until multiple protective tiles 2 are completely covered and fixed to the outside of the water-cooled wall tube 1 along the axial direction of the water-cooled wall tube 1. The number of protective tiles 2 to be used can be selected according to the length of the water-cooled wall tube 1.

[0025] like Figure 5As shown, in a preferred embodiment of the utility model, the snap-on assembly 12 includes: a first connecting block 1201 integrally arranged at one end of the fixed steel sheet 5, a snap-on interface 1202 is arranged on the side of the first connecting block 1201, a second connecting block 1203 is arranged at the other end of the fixed steel sheet 5, and an elastic snap-on assembly 1204 assembly 12 is arranged on the side of the second connecting block 1203. The elastic snap-on assembly 1204 assembly 12 cooperates with the snap-on interface 1202. The fixed steel sheet 5 can be directly snapped onto the outside of the water-cooled wall tube 1 through the snap-on assembly 12, which is very convenient for installation, disassembly and replacement, and has better practicality.

[0026] In a preferred embodiment of the utility model, an assembly groove 7 is provided in the middle part of the protective tile 2. The assembly groove 7 cooperates with the fixed steel sheet 5. The fixed steel sheet 5 can be embedded in the assembly groove 7, so that the inner side surface of the fixed steel sheet 5 is flush with the inner side surface of the protective tile 2, thereby ensuring that the protective tile 2 and the outer side surface of the water-cooled wall tube 1 fit better. In addition, two groups of limiting protrusions 8 are symmetrically provided at both ends of the assembly groove 7. The limiting protrusions 8 are integrally provided with the protective tile 2. The limiting protrusions 8 are used to limit the fixed steel sheet 5, and the connection strength between the fixed steel sheet 5 and the protective tile 2 is auxiliary strengthened. On the other hand, the width of the fixed steel sheet 5 gradually increases from the connecting bolts 6 to both sides, which can ensure that the fixed steel sheet 5 is smoothly pushed into the assembly groove 7.

[0027] In a preferred embodiment of the utility model, two positioning grooves 9 are symmetrically arranged on the inner side of the protective tile 2, and two positioning protrusions 10 are symmetrically arranged on the outer side of the fixed steel sheet 5. Under the elastic force of the fixed steel sheet 5, the positioning grooves 9 and the positioning protrusions 10 cooperate with each other, which can further strengthen the connection strength between the fixed steel sheet 5 and the protective tile 2.

[0028] The working principle of the utility model is as follows: first, the fixed steel sheet 5 is gradually inserted into the inner side of the protective tile 2 from the assembly groove 7 until the connecting bolt 6 enters the insertion hole 11, and the fixed steel sheet 5 is locked by the nut, and at the same time, the outer side of the fixed steel sheet 5 is attached to the inner side of the protective tile 2, and the limiting protrusion 8 limits and fixes the fixed steel sheet 5. Then, the two ends of the fixed steel sheet 5 are butted, the protective tile 2 is fixed to the outer side of the water-cooled wall tube 1, and locked by the buckle assembly 12, and then the protective tiles 2 are butted in sequence until multiple protective tiles 2 are completely covered and fixed to the outer side of the water-cooled wall tube 1 along the axial direction of the water-cooled wall tube 1.

[0029] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A CFB boiler water-cooled wall tube protection structure, comprising: A plurality of protective tiles (2) are arranged in an array on the outer peripheral side of a water-cooled wall tube (1), characterized in that the protective tiles (2) are connected to the water-cooled wall tube (1) through a clamping assembly, a clamping protrusion (3) is provided at one end of the protective tile (2), a clamping groove (4) is provided at the other end of the protective tile (2), the clamping groove (4) and the clamping protrusion (3) cooperate with each other, and a plug hole (11) is provided in the middle of the protective tile (2); the clamping assembly comprises: a fixed steel sheet (5) arranged on the inner side of the protective tile (2), a connecting bolt (6) is integrally provided on the outer peripheral side of the fixed steel sheet (5), the connecting bolt (6) and the plug hole (11) cooperate with each other, and the two ends of the fixed steel sheet (5) are connected to each other through a buckle assembly (12).

2. A CFB boiler water wall tube protection structure according to claim 1, characterized in that: A mounting groove (7) is provided in the middle of the protective tile (2), and the mounting groove (7) cooperates with the fixing steel sheet (5).

3. A CFB boiler water wall tube protection structure according to claim 2, characterized in that: Two groups of limiting protrusions (8) are symmetrically arranged at both ends of the assembly groove (7), and the limiting protrusions (8) are integrally arranged with the protective tile (2).

4. A CFB boiler water wall tube protection structure according to claim 1, characterized in that: Two positioning grooves (9) are symmetrically arranged on the inner side of the protective tile (2), and two positioning protrusions (10) are symmetrically arranged on the outer side of the fixing steel sheet (5), and the positioning grooves (9) and the positioning protrusions (10) cooperate with each other.

5. A CFB boiler water wall tube protection structure according to claim 1, characterized in that: The width of the fixing steel sheet (5) gradually increases from the connecting bolt (6) toward both sides.

6. A CFB boiler water wall tube protection structure according to claim 1, characterized in that: A limiting block (13) is integrally arranged on the side of the clamping groove (4), a limiting groove (14) is arranged on one side of the clamping protrusion (3), and the limiting block (13) and the limiting groove (14) are butted against each other.

7. A CFB boiler water wall tube protection structure according to claim 1, characterized in that: The buckle assembly (12) comprises: a first connection block (1201) integrally arranged at one end of the fixed steel sheet (5), a card interface (1202) being arranged on the side of the first connection block (1201), a second connection block (1203) being arranged at the other end of the fixed steel sheet (5), an elastic buckle (1204) assembly (12) being arranged on the side of the second connection block (1203), and the elastic buckle (1204) assembly (12) and the card interface (1202) being matched with each other.

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