Flue cooling device for thermal power generation boiler

Abstract

The invention discloses a flue cooling device for a thermal power generation boiler, and belongs to the technical field of boiler flue cooling. By arranging a mounting frame, a fixing frame, a connecting frame, a fixing spring and a connecting convex block, fixing blocks on the two sides of the connecting frame are pushed to get close to the connecting frame, so that a moving plate slides in the connecting frame, and meanwhile, the fixing blocks extrude the fixing spring to deform; until two groups of connecting bumps on the same side of the two groups of fixing blocks correspond to the position of an L-shaped clamping groove I or an L-shaped clamping groove II on one side of the mounting frame or the fixing frame, after the connecting bumps are clamped into the corresponding L-shaped clamping groove I or the L-shaped clamping groove II, the fixing blocks are loosened, and the fixing blocks are jacked up towards the two sides of the connecting frame under the springback action of fixing springs; and the connecting convex block is driven to slide in the L-shaped clamping groove I or the L-shaped clamping groove II until the connecting convex block is clamped and fixed in the L-shaped clamping groove I or the L-shaped clamping groove II, so that the mounting frame or the fixing frame can be conveniently combined and connected.

Description

Technical Field

[0001] The invention belongs to the technical field of boiler flue cooling, and in particular relates to a flue cooling device for a thermal power generation boiler. Background Art

[0002] As the core equipment in a thermal power plant, a thermal power boiler generates steam by heating water or other working fluids. The steam is then transported to the steam turbine to drive the turbine to rotate, thereby driving the generator to generate electricity. When the boiler is burning and heating, a large amount of high-temperature flue gas is generated, and the flue gas is discharged from the flue. In order to improve thermal efficiency and reduce environmental pollution, a flue cooling device is often installed in the flue to reduce the temperature of the flue gas.

[0003] The existing flue cooling device for thermal power generation boilers has specific specifications. When encountering flues of different specifications and lengths, it is difficult to arbitrarily adjust the number of cooling tubes according to the flue cooling needs, which affects the efficiency of the cooling device in cooling the flue. Therefore, improvement is needed. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a flue cooling device for a thermal power generation boiler, which solves the problem that the existing flue cooling device for a thermal power generation boiler has specific specifications. When encountering flues of different specifications and lengths, it is difficult to arbitrarily adjust the number of cooling tubes according to the flue cooling needs, thereby affecting the efficiency of the cooling device in cooling the flue.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flue cooling device for a thermal power generation boiler, comprising a base plate, a mounting frame is fixedly installed on one side of the top of the base plate, a plurality of fixing frames are arranged on the top of the base plate, and the plurality of fixing frames are placed closely relative to each other on the top of the base plate, two sets of fixing clips are arranged on one side of the fixing frame, cooling pipes are arranged in an S shape between four sets of fixing clips between two sets of opposite fixing frames, circulation mechanisms are arranged at both ends of the cooling pipes located on the outside of the fixing frames, concave clips are symmetrically arranged on both sides of the two sets of fixing frames, positioning clips are respectively arranged at the four corners between the two sets of opposite fixing frames, and two sets of connecting frames are symmetrically arranged on one side of the mounting frame or the fixing frame.

[0006] As a further solution of the present invention: universal wheels are fixedly installed at the four corners of the bottom of the base plate, multiple sets of elastic pads 1 are fixedly installed at the central position of the top of the base plate, and multiple sets of elastic pads 2 are fixedly installed at positions corresponding to the elastic pads 1 on both sides of the top of the base plate.

[0007] As a further solution of the present invention: an X-shaped frame is fixedly installed on one side of the inner wall of the mounting frame, a fan is fixedly installed at the central position of one side of the X-shaped frame, a protective strip is fixedly installed inside the side of the mounting frame away from the X-shaped frame, and L-shaped slots are symmetrically provided on the surface of the mounting frame on both sides of the X-shaped frame.

[0008] As a further solution of the present invention: two groups of L-shaped card slots 2 are symmetrically fixedly installed on one side of the fixing frame, and the position of the L-shaped card slot 2 corresponds to that of the L-shaped card slot 1, T-shaped card slots are symmetrically provided on both sides of the inner wall of the fixing frame, installation grooves are symmetrically provided on both sides of the surface of the fixing frame, two groups of fixing protrusions are fixedly installed on one side of the installation groove, and positioning holes are respectively provided at the four corners of one side of the fixing frame.

[0009] As a further solution of the present invention: a plurality of fixed card slots are equidistantly arranged on one side of the fixed card strip, and T-shaped card blocks are symmetrically fixedly installed at both ends of the fixed card slots, and the T-shaped card blocks correspond to the T-shaped card slots in position and have the same shape.

[0010] As a further solution of the present invention: the circulation mechanism includes a water tank, the bottom of the surface of the water tank is connected to a water valve, the bottom of the water tank is connected to a water pump, and both ends of the cooling pipe are connected to the water tank and the water pump respectively.

[0011] As a further solution of the present invention: four groups of fixing holes are provided on the surface of the concave card plate, and the fixing holes correspond to the positions of the fixing protrusions, and fixing bolts are symmetrically provided on both sides of the concave card plate, and the fixing bolts pass through the concave card plate and are connected to the fixing frame.

[0012] As a further solution of the present invention: positioning posts are symmetrically fixedly installed on both sides of the positioning card plate, and the positioning posts have the same shape as the positioning holes, and two groups of fixing rings are fixedly installed on the surface of the positioning posts.

[0013] As a further solution of the present invention: limiting slide grooves are symmetrically provided on both sides of the connecting frame, and movable plates are symmetrically slidably installed on both sides of the connecting frame. Limiting protrusions are symmetrically fixedly installed at both ends of the movable plate, and the limiting protrusions correspond to the positions of the limiting slide grooves. Two groups of top rods are fixedly installed on one side of the movable plate, and the ends of the two groups of top rods away from the movable plate pass through the connecting frame and are fixedly installed with fixed blocks. Fixed springs are provided on the surfaces of the top rods located between the connecting frame and the fixed block. Connecting protrusions are symmetrically fixedly installed at both ends of the fixed block, and the connecting protrusions correspond to the positions of the L-shaped slot one or the L-shaped slot two.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, by providing a mounting frame, a fixing frame, a connecting frame, a fixing spring and a connecting protrusion, the fixing blocks on both sides of the connecting frame are pushed close to the connecting frame, so that the movable plate slides inside the connecting frame, and at the same time, the fixing blocks squeeze the fixing springs to deform until the two groups of connecting protrusions located on the same side of the two groups of fixing blocks correspond to the positions of the L-shaped slot 1 or the L-shaped slot 2 on one side of the mounting frame or the fixing frame, and after the connecting protrusions are inserted into the corresponding L-shaped slot 1 or the L-shaped slot 2, the fixing blocks are released and the fixing blocks are lifted toward the two sides of the connecting frame under the rebound action of the fixing springs, driving the connecting protrusions to slide inside the L-shaped slot 1 or the L-shaped slot 2 until the connecting protrusions are clamped and fixed inside the L-shaped slot 1 or the L-shaped slot 2, thereby facilitating the combined connection of the mounting frame or the fixing frame, and the number of cooling pipes can be adjusted at will according to the specifications of the flue.

[0016] 2. In the present invention, by providing a fixing frame, a fixing protrusion, a fixing clip, a cooling pipe and a concave clip plate, the fixing clip strips are inserted into the corresponding fixing frames in pairs, and the T-shaped clip blocks at both ends of the fixing clip strips are inserted into the corresponding T-shaped clip grooves on the inner wall of the fixing frame. After the cooling pipe is inserted into the fixing clip grooves on the surfaces of the two groups of fixing clip strips inside one group of fixing frames in an S shape, another group of fixing frames is covered on the surface of the cooling pipe, so that the two groups of fixing clip strips opposite to each other between the two groups of fixing frames are correspondingly inserted on the surface of the cooling pipe, the concave clip plate is inserted into the corresponding mounting grooves on both sides of the two groups of fixing frames, the positioning jack is inserted into the corresponding surface of the connecting protrusion, the fixing bolts are tightened to connect and fix the concave clip plate to the fixing frame, thereby the two groups of fixing frames are combined and connected, so that the fixing clip strip can clamp and fix the cooling pipe, which is convenient for disassembly or installation of the cooling pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the bottom plate and the universal wheel of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the mounting frame and the fan of the present invention;

[0020] Figure 4 It is a cross-sectional expansion structure schematic diagram of the fixing frame, the fixing clip and the cooling pipe of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the fixing frame of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the positioning clamping plate and the positioning clamping column of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the fixing clip of the present invention;

[0024] Figure 8 It is a schematic cross-sectional structural diagram of the connecting frame and the connecting protrusion of the present invention;

[0025] In the figure: 1, bottom plate; 101, universal wheel; 102, elastic pad 1; 103, elastic pad 2; 2, mounting frame; 201, X-shaped frame; 202, fan; 203, protection strip; 204, L-shaped slot 1; 3, fixing frame; 301, L-shaped slot 2; 302, T-shaped slot; 303, mounting slot; 304, fixing protrusion; 305, positioning socket; 4, fixing strip; 401, fixing slot; 402, T-shaped block ; 5. Cooling pipe; 6. Circulation mechanism; 601. Water tank; 602. Water valve; 603. Water pump; 7. Concave clamping plate; 701. Fixing clamping hole; 702. Fixing bolt; 8. Positioning clamping plate; 801. Positioning clamping column; 802. Fixing clamping ring; 9. Connecting frame; 901. Limiting slide groove; 902. Moving plate; 903. Limiting protrusion; 904. Push rod; 905. Fixing block; 906. Fixing spring; 907. Connecting protrusion. DETAILED DESCRIPTION

[0026] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0027] like Figure 1-8 As shown, the present invention provides a technical solution: a flue cooling device for a thermal power generation boiler, comprising a bottom plate 1, and universal wheels 101 are fixedly installed at the four corners of the bottom of the bottom plate 1. By providing the universal wheels 101, the bottom plate 1 is pushed to control the universal wheels 101 to rotate on the ground, so as to facilitate the bottom plate 1 to move in the flue;

[0028] A plurality of sets of elastic pads 102 are fixedly installed at the central position of the top of the base plate 1, and a plurality of sets of elastic pads 103 are fixedly installed at the positions corresponding to the elastic pads 102 on both sides of the top of the base plate 1. Because the elastic pads 102 and the elastic pads 103 are provided, when the fixing frame 3 is combined and clamped between the relative elastic pads 102 and the elastic pads 103, the elastic pads 102 and the elastic pads 103 squeeze and support the fixing frame 3, and at the same time, the distance between the two adjacent cooling pipes 5 is limited while the fixing frame 3 is clamped and fixed.

[0029] A mounting frame 2 is fixedly installed on one side of the top of the bottom plate 1, an X-shaped frame 201 is fixedly installed on one side of the inner wall of the mounting frame 2, a fan 202 is fixedly installed at the central position of one side of the X-shaped frame 201, a protective strip 203 is fixedly installed inside the side of the mounting frame 2 away from the X-shaped frame 201, and L-shaped slots 204 are symmetrically provided on the surface of the mounting frame 2 located on both sides of the X-shaped frame 201. The fan 202 is provided, and the fan blades are controlled to rotate by starting the fan 202, thereby driving the air inside the flue to flow, so that the high-temperature air inside the flue can flow on the surface of the cooling pipe 5.

[0030] A plurality of fixing frames 3 are provided on the top of the base plate 1, and the plurality of fixing frames 3 are placed closely relative to each other on the top of the base plate 1, and two groups of L-shaped card slots 2 301 are symmetrically fixedly installed on one side of the fixing frame 3, and the position of the L-shaped card slot 2 301 corresponds to the position of the L-shaped card slot 1 204. Because the fixing frame 3 is provided, the two groups of fixing clips 4 are clamped and fixed on one side of the fixing frame 3, thereby ensuring that when the two groups of fixing clips 4 clamp and fix the cooling pipe 5, the fixing clips 4 will not be misaligned or offset.

[0031] T-shaped card slots 302 are symmetrically provided on both sides of the inner wall of the fixing frame 3, two groups of fixing card strips 4 are provided on one side of the fixing frame 3, and multiple groups of fixing card slots 401 are equidistantly provided on one side of the fixing card strip 4. T-shaped card blocks 402 are symmetrically fixedly installed at both ends of the fixing card slots 401. The positions of the T-shaped card blocks 402 and the T-shaped card blocks 402 correspond to those of the T-shaped card slots 302 and have the same shape. By providing the T-shaped card slots 302 and the T-shaped card blocks 402, after the T-shaped card blocks 402 at both ends of the fixing card strip 4 are inserted into the corresponding T-shaped card slots 302, it is ensured that the fixing card strip 4 will not shake at will when it is fixed to the surface of the fixing frame 3.

[0032] The cooling pipe 5 is arranged in an S shape between the four groups of fixed clips 4 between the two groups of opposite fixed frames 3. Since the cooling pipe 5 is arranged, the cooling pipe 5 arranged in an S shape is fixed between the two groups of fixed clips 4, thereby increasing the contact area between the cooling pipe 5 and the high-temperature air inside the flue, thereby improving the cooling efficiency of the high-temperature flue gas inside the flue;

[0033] The cooling pipe 5 is located at both ends of the outer side of the fixing frame 3 and is provided with a circulation mechanism 6, the circulation mechanism 6 includes a water tank 601, the bottom of the surface of the water tank 601 is connected to a water valve 602, the bottom of the water tank 601 is connected to a water pump 603, and the two ends of the cooling pipe 5 are respectively connected to the water tank 601 and the water pump 603. Since the water tank 601 and the water pump 603 are provided, the water pump 603 is started to input the liquid inside the water tank 601 into the cooling pipe 5. As the cooling pipe 5 absorbs a large amount of heat inside the flue, the temperature of the liquid inside the cooling pipe 5 rises, and as the water pump 603 is pressurized, the liquid inside the cooling pipe 5 is discharged into the water tank 601, thereby realizing the circulation of the coolant inside the water tank 601.

[0034] The fixing bracket 3 has two fixing holes 301 on one side and two fixing protrusions 304 on the other side. The fixing bracket 3 has two fixing holes 301 on the other side. The fixing holes 701 are aligned with the fixing protrusions 304. The fixing bolts 702 are symmetrically arranged on the two sides of the fixing bracket 3. The fixing bolts 702 pass through the fixing bracket 7 and are connected to the fixing bracket 3. After the two fixing brackets 3 are relatively combined and tightly attached together, the fixing bracket 7 is clamped in the corresponding mounting grooves 303 on the surfaces of the two fixing brackets 3, so that the fixing holes 701 on the surface of the fixing bracket 7 are clamped in the corresponding surfaces of the fixing protrusions 304 inside the mounting grooves 303. The fixing bolts 702 are tightened to connect and fix the concave clamp 7 to the fixing bracket 3, so that the concave clamp 7 can connect and fix the two fixing brackets 3.

[0035] Positioning holes 305 are respectively provided at the four corners of one side of the fixing frame 3, and positioning clamps 8 are respectively provided at the four corners between the two groups of opposite fixing frames 3. Positioning clamps 801 are symmetrically fixedly installed on both sides of the positioning clamps 8, and the positioning clamps 801 have the same shape as the positioning holes 305. Two groups of fixing clamp rings 802 are fixedly installed on the surface of the positioning clamps 801. Because of the positioning clamps 801, after the positioning clamps 801 on one side of the four groups of positioning clamps 8 are inserted into the corresponding positioning holes 305 at the four corners of one side of the fixing frame 3, the other group of fixing frames 3 are correspondingly covered on the top of the fixing frames 3 to ensure that the positioning clamps 801 can be inserted into the corresponding positioning holes 305, thereby ensuring that the two groups of fixing frames 3 will not be misaligned when they are combined and connected.

[0036] Two groups of connecting frames 9 are symmetrically arranged on one side of the mounting frame 2 or the fixing frame 3. The connecting frames 9 are symmetrically provided with limiting slide grooves 901 on both sides, and the movable plates 902 are symmetrically slidably installed on both sides of the connecting frames 9. The limiting protrusions 903 are symmetrically fixedly installed at both ends of the movable plates 902, and the limiting protrusions 903 correspond to the positions of the limiting slide grooves 901. By providing the limiting slide grooves 901 and the limiting protrusions 903, when the fixed block 905 is pushed to drive the movable plates 902 to slide inside the connecting frames 9, the movable plates 902 drive the limiting protrusions 903 to slide inside the corresponding limiting slide grooves 901, ensuring that the movable plates 902 will not tilt or deflect when sliding inside the connecting frames 9;

[0037] Two sets of push rods 904 are fixedly installed on one side of the moving plate 902, and the ends of the two sets of push rods 904 away from the moving plate 902 pass through the connecting frame 9 and are fixedly installed with fixed blocks 905. The surfaces of the push rods 904 located between the connecting frame 9 and the fixed blocks 905 are provided with fixed springs 906. Due to the provision of the fixed springs 906, the fixed blocks 905 are pushed toward the side away from the connecting frame 9 under the rebound action of the fixed springs 906, thereby driving the connecting protrusions 907 at both ends of the fixed blocks 905 to slide inside the corresponding L-shaped card slot 1 204 or L-shaped card slot 2 301;

[0038] Connecting protrusions 907 are symmetrically fixedly installed at both ends of the fixing block 905, and the connecting protrusions 907 correspond to the positions of the L-shaped slot 1 204 or the L-shaped slot 2 301. Because the connecting protrusions 907 are provided, after the connecting protrusions 907 are inserted into the corresponding L-shaped slot 1 204 or the L-shaped slot 2 301, the connecting frame 9 is combined and connected with the mounting frame 2 or the fixing frame 3.

[0039] The working principle of the present invention is:

[0040] Insert the fixed clip strip 4 into the fixed frame 3, so that the T-shaped clip blocks 402 at both ends of the fixed clip strip 4 are inserted into the T-shaped clip grooves 302 corresponding to the inner wall of the fixed frame 3, and then clamp the cooling pipe 5 in an S shape on the surface of the fixed clip strip 4, so that the water storage tanks 601 and the water pump 603 at both ends of the cooling pipe 5 are tightly attached to the surface of the fixed frame 3, and after the corresponding positioning clip columns 801 are inserted into the four corners of the fixed frame 3, move another set of fixed frames 3 equipped with the fixed clip strip 4 to cover the surface of the cooling pipe 5, so that the two sets of fixed frames 3 are correspondingly attached to each other, and the concave clip plate 7 is clamped into the corresponding installation grooves 303 on both sides of the two sets of fixed frames 3, so that the fixed clip holes 701 on the surface of the concave clip plate 7 are clamped on the corresponding surfaces of the fixed protrusions 304, and the fixing bolts 702 are tightened to fix the concave clip plate 7 inside the installation grooves 303, so that the two sets of fixed frames 3 are combined, connected and fixed;

[0041] Place multiple groups of combined and connected fixing frames 3 on the top of the bottom plate 1 and clamp them between the corresponding elastic pads 102, so that the position between the L-shaped slot 1 204 and the L-shaped slot 2 301 corresponds to each other, push and squeeze the fixing blocks 905 on both sides of the connecting frame 9 to approach each other, so that the fixing spring 906 is squeezed and deformed on the surface of the top rod 904, until the connecting protrusions 907 on both sides of the two groups of fixing blocks 905 correspond to the positions of the L-shaped slot 1 204 and the L-shaped slot 2 301, and push the connecting protrusions 907 on both sides of the two groups of fixing blocks 905 to move to the connecting protrusions 907 on the top of the bottom plate 1. After being inserted into the corresponding L-shaped card slot 1 204 and L-shaped card slot 2 301, the fixing block 905 is released and the fixing block 905 is lifted toward the two sides of the connecting frame 9 under the rebound effect of the fixing spring 906, so that the connecting protrusion 907 slides inside the corresponding L-shaped card slot 1 204 and L-shaped card slot 2 301 until the connecting protrusion 907 is clamped and fixed inside the L-shaped card slot 1 204 and L-shaped card slot 2 301, thereby combining and connecting the mounting frame 2 and the plurality of combined fixing frames 3;

[0042] Start the fan 202 to drive the air inside the flue to start flowing, so that the high-temperature flue gas inside the flue flows on the surface of the cooling pipe 5. At the same time, start the water pump 603 to input the coolant stored in the water tank 601 into the cooling pipe 5, so that the coolant inside the cooling pipe 5 can circulate. When the coolant flows inside the cooling pipe 5, it absorbs the heat absorbed by the cooling pipe 5 due to the flow of the high-temperature flue gas, thereby cooling the flue gas inside the flue.

[0043] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

Claims

1. A flue cooling device for a thermal power generation boiler, comprising a bottom plate (1), characterized in that: A mounting frame (2) is fixedly mounted on one side of the top of the base plate (1); a plurality of sets of fixing frames (3) are arranged on the top of the base plate (1); and the plurality of fixing frames (3) are placed closely on the top of the base plate (1) in pairs; two sets of fixing clips (4) are arranged on one side of the fixing frames (3); cooling pipes (5) are arranged in an S shape between four sets of fixing clips (4) between two sets of opposite fixing frames (3); circulation mechanisms (6) are arranged at both ends of the cooling pipes (5) located on the outside of the fixing frames (3); concave clips (7) are symmetrically arranged on both sides of the two sets of fixing frames (3); positioning clips (8) are arranged at four corners between the two sets of opposite fixing frames (3); and two sets of connecting frames (9) are symmetrically arranged on one side of the mounting frame (2) or the fixing frame (3).

2. A flue cooling device for a thermal power generation boiler according to claim 1, characterized in that: Universal wheels (101) are fixedly mounted at the four corners of the bottom of the base plate (1), multiple sets of elastic pad blocks 1 (102) are fixedly mounted at the central position of the top of the base plate (1), and multiple sets of elastic pad blocks 2 (103) are fixedly mounted at positions corresponding to the elastic pad blocks 1 (102) on both sides of the top of the base plate (1).

3. The flue cooling device for a thermal power generation boiler according to claim 1, characterized in that: An X-shaped frame (201) is fixedly mounted on one side of the inner wall of the mounting frame (2), a fan (202) is fixedly mounted at the central position of one side of the X-shaped frame (201), a protective strip (203) is fixedly mounted inside a side of the mounting frame (2) away from the X-shaped frame (201), and L-shaped card slots (204) are symmetrically arranged on both sides of the X-shaped frame (201) on the surface of the mounting frame (2).

4. A flue cooling device for a thermal power generation boiler according to claim 3, characterized in that: Two groups of L-shaped card slots (301) are symmetrically fixedly installed on one side of the fixing frame (3), and the positions of the L-shaped card slots (301) and the L-shaped card slots (204) correspond to each other. T-shaped card slots (302) are symmetrically provided on both sides of the inner wall of the fixing frame (3). Installation grooves (303) are symmetrically provided on both sides of the surface of the fixing frame (3). Two groups of fixing protrusions (304) are fixedly installed on one side of the installation groove (303). Positioning sockets (305) are provided at the four corners of one side of the fixing frame (3).

5. A flue cooling device for a thermal power generation boiler according to claim 4, characterized in that: A plurality of fixed card slots (401) are equidistantly arranged on one side of the fixed card strip (4), and T-shaped card blocks (402) are symmetrically fixedly installed at both ends of the fixed card slots (401), and the T-shaped card blocks (402) correspond in position to the T-shaped card slots (302) and have the same shape.

6. The flue cooling device for a thermal power generation boiler according to claim 1, characterized in that: The circulation mechanism (6) comprises a water tank (601), the bottom of the surface of the water tank (601) is connected to a water valve (602), the bottom of the water tank (601) is connected to a water pump (603), and the two ends of the cooling pipe (5) are respectively connected to the water tank (601) and the water pump (603).

7. A flue cooling device for a thermal power generation boiler according to claim 4, characterized in that: The surface of the concave card plate (7) is provided with four groups of fixing holes (701), and the positions of the fixing holes (701) and the fixing protrusions (304) correspond to each other. Fixing bolts (702) are symmetrically provided on both sides of the concave card plate (7), and the fixing bolts (702) pass through the concave card plate (7) and are connected to the fixing frame (3).

8. The flue cooling device for a thermal power generation boiler according to claim 4, characterized in that: Positioning posts (801) are symmetrically fixedly mounted on both sides of the positioning card plate (8), and the positioning posts (801) have the same shape as the positioning sockets (305). Two groups of fixing rings (802) are fixedly mounted on the surfaces of the positioning posts (801).

9. The flue cooling device for a thermal power generation boiler according to claim 4, characterized in that: The connecting frame (9) is symmetrically provided with limiting sliding grooves (901) on both sides, and a movable plate (902) is symmetrically slidably installed on both sides of the connecting frame (9). The two ends of the movable plate (902) are symmetrically fixedly installed with limiting protrusions (903), and the limiting protrusions (903) correspond to the positions of the limiting sliding grooves (901). Two groups of push rods (904) are fixedly installed on one side of the movable plate (902), and the ends of the two groups of push rods (904) away from the movable plate (902) pass through the connecting frame (9) and are fixedly installed with fixed blocks (905). The surfaces of the push rods (904) located between the connecting frame (9) and the fixed blocks (905) are provided with fixing springs (906). The two ends of the fixed blocks (905) are symmetrically fixedly installed with connecting protrusions (907), and the connecting protrusions (907) correspond to the positions of the L-shaped card slot 1 (204) or the L-shaped card slot 2 (301).

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