Fixing support for air pre-heater sealing structure

Abstract

The utility model provides a fixing support for an air pre-heater sealing structure, and relates to the field of air pre-heaters, the fixing support comprises a placing portion used for placing a sealing element, two pressing assemblies used for extruding one side of the sealing element are arranged in the placing portion, the top end of the sealing element is pressed, so that the sealing element pushes a driving block to move downwards, and the sealing element is fixed through the pressing assemblies. The inclined surface on one side of the driving block extrudes one end of the transverse moving block, so that the transverse moving block moves, the inclined surface at one end of the transverse moving block extrudes the bottom end of the vertical moving block, the vertical moving block moves, and the inclined surface at the top end of the vertical moving block extrudes one end of the extrusion block, so that the extrusion block moves; and one end, far away from the vertical moving block, of the extrusion block extrudes one side of the sealing piece, the friction force between the surface of the sealing piece and the extrusion block is increased, and the fixing effect on the sealing piece can be improved to a certain degree through the structure.

Description

Technical Field

[0001] The utility model relates to the field of air preheaters, in particular to a fixing bracket used for an air preheater sealing structure. Background Art

[0002] When the air preheater is in hot operation, all parts of the air preheater will expand due to the heat, the rotor will become mushroom-shaped, and the gaps between the rotor and the fan plate and arc plate will change. Most of the gaps will become smaller. In the hot operation state, if the gap is too large, the air preheater will have a large air leakage rate. If it is too small, it may cause the air preheater to get stuck. In order to reduce the coal consumption of coal-fired power units, the air preheater sealing structure is usually used to seal the device space, thereby improving the operating efficiency of the boiler and reducing coal consumption. A fixed bracket is required to fix the sealing structure to the air preheater drum.

[0003] There is a fixing bracket for an air preheater sealing structure, comprising a fixing installation part connected to the air preheater drum and a placing part for placing a seal, the cross section of the placing part is L-shaped, one side of the placing part is fixedly connected to one side of the fixing installation part, a fixing groove is formed by the placing part and the fixing installation part, the bottom end of the seal is placed in the fixing groove, so as to fix the seal, a sliding groove is provided on one side of the inner wall of the fixing groove, a spring and an extrusion block are provided in the sliding groove, the elasticity of the spring is used to squeeze one side of the seal to fix the seal, but the extrusion block is squeezed on one side of the seal by the elastic force of the spring, the extrusion effect is weak, and the extrusion force is limited, therefore, this fixing bracket has a low fixing effect on the seal.

[0004] Therefore, it is necessary to provide a new fixing bracket for the air preheater sealing structure to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a fixing bracket for an air preheater sealing structure.

[0006] The fixed bracket for the air preheater sealing structure provided by the utility model comprises a placement part for placing the sealing member, and two pressing assemblies for pressing one side of the sealing member are arranged inside the placement part;

[0007] The clamping assembly includes a transverse moving block, a vertical moving block, an extrusion block and a driving block, wherein the placing portion is provided with a through slot at the bottom, a first slide slot is provided on one side of an inner wall of the through slot, a second slide slot is provided on one side of the placing portion, the second slide slot is located above the first slide slot, a third slide slot is provided inside the placing portion, the first slide slot and the second slide slot are horizontally arranged, the third slide slot is vertically arranged, two ends of the third slide slot are respectively connected with the first slide slot and the second slide slot, the driving block is located in the through slot, the driving block can slide in the through slot, the side of the driving block close to the first slide slot is inclined, the transverse moving block is located in the first slide slot, and the transverse The lateral moving block can slide in the first slide groove, and one end of the lateral moving block is in contact with a side of the driving block that is inclined. The end of the lateral moving block away from the driving block is inclined. The vertical moving block is located in the third slide groove, and the vertical moving block can slide in the third slide groove. The bottom end of the vertical moving block is in contact with the inclined surface of one end of the lateral moving block. The top of the vertical moving block is inclined. The extrusion block is located in the second slide groove, and the extrusion block can slide in the second slide groove. One end of the extrusion block is in contact with the inclined surface of the top end of the vertical moving block. The end of the extrusion block away from the vertical moving block is provided with a plurality of protrusions for increasing friction.

[0008] Preferably, mounting grooves are provided on both sides of the inner walls of the first slide groove, the second slide groove and the third slide groove, and elastic parts are provided in the plurality of mounting grooves, one end of the plurality of elastic parts are respectively fixedly connected to one side of the inner walls of the plurality of mounting grooves, and one side of the plurality of elastic parts are respectively fixedly connected to both sides of the lateral moving block, the vertical moving block and the extrusion block.

[0009] Preferably, the multiple elastic members all include a movable plate and a spring, one end of the multiple springs are respectively fixedly connected to one side of the inner wall of the multiple installation grooves, one end of the multiple springs away from the inner wall of the installation grooves are respectively fixedly connected to one end of the multiple movable plates, and one side of the multiple movable plates are respectively fixedly connected to both sides of the lateral movable block, the vertical movable block and the extrusion block.

[0010] Preferably, the placement portion is arranged in an "L" shape, a mounting portion is provided on one side of the placement portion, and a fixing groove is formed in an area between the placement portion and the mounting portion.

[0011] Preferably, the bottom end of the sealing member is located in the fixing groove, and the bottom end of the sealing member is in contact with the top of the driving block.

[0012] Preferably, one side of the fixed mounting portion is connected to the air preheater drum via a plurality of bolts.

[0013] Compared with the related art, the fixing bracket for the air preheater sealing structure provided by the utility model has the following beneficial effects:

[0014] When the cam is in the first position, the cam is pressed against the top of the seal member, so that the seal member pushes the driving block to move downward. When the driving block moves downward, the inclined surface on one side of the driving block will squeeze one end of the lateral moving block, so that the lateral moving block moves in the first slide groove in the direction of the vertical moving block. When the lateral moving block moves, the inclined surface on one end of the lateral moving block will squeeze the bottom end of the vertical moving block, so that the vertical moving block moves in the third slide groove in the direction of the extrusion block. When the vertical moving block moves, the inclined surface on the top of the vertical moving block will squeeze one end of the extrusion block, so that the extrusion block moves in the second slide groove, so that the extrusion block is away from the end of the vertical moving block to squeeze one side of the seal. The extrusion block squeezes one side of the seal to fix the seal. At the same time, the multiple protrusions on the surface of the extrusion block can also increase the friction force. The deeper the bottom end of the seal makes the driving block descend, the greater the extrusion force of the extrusion block on one side of the seal, and the stronger the fixing effect. The above structure can improve the fixing effect of the seal to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the internal structure of a fixing bracket for an air preheater sealing structure provided by the utility model;

[0016] Figure 2 for Figure 1 The exploded structural diagram of the fixing bracket for the air preheater sealing structure is shown;

[0017] Figure 3 for Figure 2 An exploded structural diagram of the clamping assembly shown;

[0018] Figure 4 The overall structure of the fixed bracket for the air preheater sealing structure provided by the utility model is schematically shown. Figure 1 ;

[0019] Figure 5 The overall structure of the fixed bracket for the air preheater sealing structure provided by the utility model is schematically shown. Figure 2 .

[0020] Numbers in the figure: 1. placement part; 2. horizontal moving block; 3. vertical moving block; 4. extrusion block; 5. driving block; 6. first slide groove; 7. second slide groove; 8. third slide groove; 9. moving plate; 10. installation part; 11. sealing member; 12. bolt; 13. spring. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1-Figure 5 ,in, Figure 1 A schematic diagram of the internal structure of a fixing bracket for an air preheater sealing structure provided by the utility model; Figure 2 for Figure 1 The exploded structural diagram of the fixing bracket for the air preheater sealing structure is shown; Figure 3 for Figure 2 An exploded structural diagram of the clamping assembly shown; Figure 4 The overall structure of the fixed bracket for the air preheater sealing structure provided by the utility model is schematically shown. Figure 1 ; Figure 5 A schematic diagram of the internal structure of a fixing bracket for an air preheater sealing structure provided by the utility model.

[0023] In the specific implementation process, Figure 1-Figure 5 As shown, the fixing bracket for the air preheater sealing structure includes a placement portion 1 for placing a seal 11, and two pressing assemblies for pressing one side of the seal 11 are arranged inside the placement portion 1;

[0024] The clamping assembly includes a transverse moving block 2, a vertical moving block 3, an extrusion block 4 and a driving block 5. A through groove is provided at the bottom of the placement portion 1, a first slide groove 6 is provided on one side of the inner wall of the through groove, a second slide groove 7 is provided on one side of the placement portion 1, and the second slide groove 7 is located above the first slide groove 6. A third slide groove 8 is provided inside the placement portion 1, the first slide groove 6 and the second slide groove 7 are horizontally arranged, the third slide groove 8 is vertically arranged, and the two ends of the third slide groove 8 are respectively connected to the first slide groove 6 and the second slide groove 7, the driving block 5 is located in the through groove, the driving block 5 can slide in the through groove, and the side of the driving block 5 close to the first slide groove 6 is inclined, the transverse moving block 2 is located in the first slide groove 6, the transverse moving block 2 can slide in the first slide groove 6, one end of the transverse moving block 2 is in contact with the side of the driving block 5 that is inclined, and the transverse moving block 2 is away from the driving One end of the moving block 5 is inclined, the vertical moving block 3 is located in the third slide groove 8, the vertical moving block 3 can slide in the third slide groove 8, the bottom end of the vertical moving block 3 is fitted with the inclined surface of one end of the lateral moving block 2, the top of the vertical moving block 3 is inclined, the extrusion block 4 is located in the second slide groove 7, the extrusion block 4 can slide in the second slide groove 7, one end of the extrusion block 4 is fitted with the inclined surface of the top of the vertical moving block 3, and the end of the extrusion block 4 away from the vertical moving block 3 is provided with a plurality of protrusions for increasing friction, the end of the lateral moving block 2 close to the driving block 5 is also inclined and the inclination degree is the same as the inclined surface on one side of the driving block 5, the inclination degree of the bottom end of the vertical moving block 3 is the same as the inclined surface of the lateral moving block 2 away from the driving block 5, and the inclination degree of one end of the extrusion block 4 is the same as the inclined surface of the top of the vertical moving block 3;

[0025] Both sides of the inner walls of the first slide groove 6, the second slide groove 7 and the third slide groove 8 are provided with mounting grooves, and movable plates 9 and springs 13 are provided in the plurality of mounting grooves, one end of the plurality of springs 13 is respectively fixedly connected to one side of the inner walls of the plurality of mounting grooves, one end of the plurality of springs 13 away from the inner walls of the mounting grooves is respectively fixedly connected to one end of the plurality of movable plates 9, one side of the plurality of movable plates 9 is respectively fixedly connected to both sides of the transverse moving block 2, the vertical moving block 3 and the extrusion block 4, so that the driving block 5 moves upward, and the transverse moving block 2, the vertical moving block 3 and the extrusion block 4 can be reset by the rebound effect of the movable plate 9 and the spring 13;

[0026] The placement portion 1 is arranged in an "L" shape, and a mounting portion 10 is provided on one side of the placement portion 1. A fixed groove is formed in the area between the placement portion 1 and the mounting portion 10. The bottom end of the seal 11 is located in the fixed groove, and the bottom end of the seal 11 is fitted with the top of the driving block 5. One side of the fixed mounting portion 10 is connected to the air preheater drum through a plurality of bolts 12. The deeper the bottom end of the seal 11 enters the fixed groove, the greater the extrusion force of the extrusion block 4 on one side of the seal 11, and the greater the friction between the surface of the seal 11 and the inner wall of the fixed groove.

[0027] The working principle provided by the utility model is as follows: the mounting portion 10 is fixed to the drum in the air preheater by a plurality of bolts 12, and then the bottom end of the sealing member 11 is installed in the fixing groove, and the top end of the sealing member 11 is pressed to move the sealing member 11 downward, and the downward movement of the sealing member 11 will push the driving block 5 to move downward, and when the driving block 5 moves downward, the inclined surface on one side of the driving block 5 will squeeze one end of the lateral moving block 2, so that the lateral moving block 2 moves in the first slide groove 6 toward the direction of the vertical moving block 3, and when the lateral moving block 2 moves, the inclined surface at one end of the lateral moving block 2 will squeeze the bottom end of the vertical moving block 3, so that the vertical moving block 3 moves in the third slide groove 8 toward the direction of the extrusion block 4, and when the vertical moving block 3 moves, the top end of the vertical moving block 3 The inclined surface will squeeze one end of the extrusion block 4, causing the extrusion block 4 to move in the second slide groove 7, so that the extrusion block 4 is away from the end of the vertical moving block 3 to squeeze one side of the seal 11. The extrusion block 4 squeezes one side of the seal 11 to increase the friction between the surface of the seal 11 and the inner wall of the fixed groove. At the same time, the multiple protrusions on the surface of the extrusion block 4 can also increase the friction. The deeper the bottom end of the seal 11 enters the fixed groove, the greater the extrusion force of the extrusion block 4 on one side of the seal 11, and the greater the friction between the surface of the seal 11 and the inner wall of the fixed groove. In addition, by hitting the bottom of the driving block 5 to move the driving block 5 upward, the horizontal moving block 2, the vertical moving block 3 and the extrusion block 4 can be reset through the rebound effect of the moving plate 9 and the spring 13, thereby facilitating the removal of the seal 11.

[0028] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fixing bracket for an air preheater sealing structure, characterized in that: It comprises a placement portion (1) for placing a sealing member (11), wherein two pressing assemblies for pressing one side of the sealing member (11) are arranged inside the placement portion (1); The clamping assembly comprises a transverse moving block (2), a vertical moving block (3), an extrusion block (4) and a driving block (5); a through groove is provided at the bottom end of the placement portion (1); a first slide groove (6) is provided on one side of the inner wall of the through groove; a second slide groove (7) is provided on one side of the placement portion (1); the second slide groove (7) is located above the first slide groove (6); a third slide groove (8) is provided inside the placement portion (1); the first slide groove (6) and the second slide groove (7) are horizontally arranged; the third slide groove (8) is vertically arranged; two ends of the third slide groove (8) are respectively connected to the first slide groove (6) and the second slide groove (7); the driving block (5) is located in the through groove; the driving block (5) can slide in the through groove; the side of the driving block (5) close to the first slide groove (6) is inclined; the transverse moving block (2) is located in the first slide groove (6) The lateral moving block (2) can slide in the first sliding groove (6), one end of the lateral moving block (2) is in contact with a side of the driving block (5) which is inclined, and the end of the lateral moving block (2) away from the driving block (5) is inclined. The vertical moving block (3) is located in the third sliding groove (8), and the vertical moving block (3) can slide in the third sliding groove (8). The bottom end of the vertical moving block (3) is in contact with the inclined surface of one end of the lateral moving block (2), and the top end of the vertical moving block (3) is inclined. The extrusion block (4) is located in the second sliding groove (7), and the extrusion block (4) can slide in the second sliding groove (7). One end of the extrusion block (4) is in contact with the inclined surface of the top end of the vertical moving block (3), and the end of the extrusion block (4) away from the vertical moving block (3) is provided with a plurality of protrusions for increasing friction.

2. The fixing bracket for the air preheater sealing structure according to claim 1, characterized in that: Both sides of the inner walls of the first slide groove (6), the second slide groove (7) and the third slide groove (8) are provided with mounting grooves, and elastic members are provided in the plurality of mounting grooves, one end of the plurality of elastic members is respectively fixedly connected to one side of the inner walls of the plurality of mounting grooves, and one side of the plurality of elastic members is respectively fixedly connected to both sides of the lateral moving block (2), the vertical moving block (3) and the extrusion block (4).

3. The fixing bracket for the air preheater sealing structure according to claim 2, characterized in that: The plurality of elastic members each comprise a movable plate (9) and a spring (13); one end of the plurality of springs (13) is respectively fixedly connected to one side of the inner wall of the plurality of mounting grooves; one end of the plurality of springs (13) away from the inner wall of the mounting groove is respectively fixedly connected to one end of the plurality of movable plates (9); one side of the plurality of movable plates (9) is respectively fixedly connected to both sides of the lateral movable block (2), the vertical movable block (3) and the extrusion block (4).

4. The fixing bracket for the air preheater sealing structure according to claim 3 is characterized in that: The placement portion (1) is arranged in an "L" shape, a mounting portion (10) is provided on one side of the placement portion (1), and a fixing groove is formed in the area between the placement portion (1) and the mounting portion (10).

5. The fixing bracket for the air preheater sealing structure according to claim 4, characterized in that: The bottom end of the sealing member (11) is located in the fixing groove, and the bottom end of the sealing member (11) is in contact with the top of the driving block (5).

6. The fixing bracket for the air preheater sealing structure according to claim 5, characterized in that: One side of the fixed installation portion (10) is connected to the air preheater drum via a plurality of bolts (12).

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