Fluoroplastic steel low-temperature economizer with straight channel structure

Abstract

The utility model discloses a fluoroplastic steel low-temperature economizer with a straight channel structure, which comprises a tank body, two sides of the tank body are fixedly connected with tube plates, one sides of the two tube plates are fixedly connected with end sockets, a plurality of heat exchange tubes are arranged in the tank body, two ends of the plurality of heat exchange tubes are respectively inserted into the two end sockets, and the plurality of heat exchange tubes are rotatably connected with the two tube plates. A plurality of deflection baffles are fixedly connected to the inner side of the tank body, and the heat exchange pipes are rotationally connected with the deflection baffles; a cleaning mechanism is arranged among the heat exchange pipes, one end of the cleaning mechanism penetrates through the corresponding end socket, the cleaning mechanism is provided with a sealing mechanism, a reset mechanism is arranged on one side of the sealing mechanism, and a pulling mechanism is arranged on one side of the reset mechanism; dust on the outer wall of the heat exchange tube is cleaned through the cleaning brush, the cleaned dust is sucked through the multiple air suction ports, the dust is discharged along the rotating tube and the air outlet, dust on the outer surface of the heat exchange tube is cleaned more conveniently, time and labor are saved, and the heat exchange efficiency of the heat exchange tube is guaranteed.

Description

Technical Field

[0001] The utility model relates to a fluorine plastic steel low-temperature economizer with a straight-channel structure, belonging to the technical field of low-temperature economizers. Background Technique

[0002] The low-temperature economizer is a device that can effectively save coal and improve the boiler efficiency in the low-temperature section. It was formerly called "low-pressure economizer" or "flue gas cooler". It is mainly applied to the medium and low-temperature sections at the outlet of the air preheater of large boilers such as power plants and thermal power plants. By recovering the waste heat of the flue gas to heat the boiler feed water, the low-temperature economizer can effectively reduce the heat loss of the exhaust gas, so it has become an essential component of modern boilers. Fluorine plastic steel is a composite material that combines the characteristics of fluoroplastics and steel. Fluorine plastic steel inherits the corrosion resistance and chemical stability of fluoroplastics, and at the same time has the mechanical strength and rigidity of steel. The characteristics of this composite material make it have broad application prospects in many fields, especially in the field of heat exchangers. Because of the good performance of fluorine plastic steel, it is often used as the main production material of low-temperature economizers.

[0003] When the existing low-temperature economizer conveys flue gas into the tank body, the flue gas will contact several heat exchange tubes, and the cold medium in several heat exchange tubes is used to exchange heat with the flue gas. However, a certain amount of dust is mixed in the flue gas. When part of the dust contacts the heat exchange tubes, it will adhere to the heat exchange tubes. When the low-temperature economizer is used frequently, too much dust adhering to the outer surface of the heat exchange tubes will reduce the heat exchange efficiency, and it is rather troublesome to clean the dust on the outer walls of several heat exchange tubes inside the tank body. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fluorine plastic steel low-temperature economizer with a straight-channel structure to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A fluorine plastic steel low-temperature economizer with a straight-channel structure includes a tank body. Both sides of the tank body are fixedly connected with tube plates. One side of each of the two tube plates is fixedly connected with a head. A number of heat exchange tubes are arranged inside the tank body. Two ends of each of the number of heat exchange tubes are respectively inserted into the two heads. Each of the number of heat exchange tubes is rotatably connected with the two tube plates. A number of baffle plates are fixedly connected to the inner side of the tank body. Each of the number of heat exchange tubes is rotatably connected with the number of baffle plates. A cleaning mechanism is arranged between the number of heat exchange tubes. One end of the cleaning mechanism penetrates through the corresponding head. The cleaning mechanism is provided with a sealing mechanism. One side of the sealing mechanism is provided with a reset mechanism. One side of the reset mechanism is provided with a pulling mechanism. The outer side of one of the heads is fixedly connected with a box body. The end of the cleaning mechanism penetrating through the head is inserted into the box body. The upper end of the box body is hinged with a sealing cover. The bottom end of the box body is fixedly connected with an air extractor. One side of the box body is fixedly connected with a motor.

[0006] Preferably, the cleaning mechanism includes a rotating pipe, a plurality of air suction ports, a plurality of cleaning brushes, and a plurality of air outlet ports. The inside of the rotating pipe is hollow. The rotating pipe is located between a plurality of heat exchange pipes and is rotatably connected to two tube sheets. One end of the rotating pipe is inserted into the box body and fixedly connected to the output end of the motor. A plurality of air outlet ports are evenly arranged on the outer side of the end of the rotating pipe located inside the box body. A plurality of air suction ports are arranged on the outer side of the rotating pipe, and all the plurality of air suction ports are located inside the tank body. A plurality of cleaning brushes are fixedly connected to the outer side of the rotating pipe, and the widths of all the plurality of cleaning brushes are greater than the distance between the rotating pipe and the corresponding heat exchange pipe.

[0007] Preferably, the reset mechanism includes a pressing rod, a fixed rod, and a spring. The fixed rod is horizontally fixed inside one of the air outlet ports. The upper end of the pressing rod is movably sleeved on the fixed rod. A spring is fixedly connected between one side of the pressing rod and the inner wall of the air outlet port. The spring is sleeved around the fixed rod, and the bottom end of the pressing rod is inserted into the rotating pipe.

[0008] Preferably, the sealing mechanism includes a mounting rod, a plurality of sealing rings, and a plurality of connecting rods. The mounting rod is located on the inner wall of the rotating pipe. One end of the mounting rod is fixedly connected to one side of the bottom end of the pressing rod. A plurality of sealing rings are sleeved around the mounting rod, and the plurality of sealing rings are fixedly connected to the mounting rod through a plurality of connecting rods. The plurality of sealing rings respectively correspond to the plurality of air suction ports.

[0009] Preferably, the pulling mechanism includes a chain, a pull ring, two positioning columns, a limiting column, and a limiting groove. The two positioning columns are vertically fixed on the outer side of the rotating pipe. A limiting column is arranged on one side of the two positioning columns. The limiting column is fixedly connected to the outer side of the rotating pipe. A limiting groove is arranged on the outer side of the limiting column. The limiting groove is annular. The pull ring is sleeved around the two positioning columns. One side of the pull ring is fixedly connected to a chain, and the end of the chain far from the positioning column is fixedly connected to the top end of the pressing rod.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: The dust on the outer wall of the heat exchange pipe is cleaned by the cleaning brush, and then the dust cleaned is sucked in through a plurality of air suction ports. The dust is discharged along the rotating pipe and the air outlet ports. It is more convenient, time-saving and labor-saving to clean the dust on the outer surface of the heat exchange pipe, and the heat exchange efficiency of the heat exchange pipe is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic diagram of the internal structure of the tank body of the present utility model;

[0013] Figure 3 is a schematic diagram of the distribution of the cleaning mechanism and a plurality of heat exchange pipes of the present utility model;

[0014] Figure 4 Structural schematic diagram of the cleaning mechanism of the present utility model;

[0015] Figure 5 Connection schematic diagram of the reset mechanism, sealing mechanism and cleaning mechanism of the present utility model;

[0016] Figure 6 Structural schematic diagram of the pulling mechanism of the present utility model.

[0017] In the figure: 1, tank body; 2, tube sheet; 3, head; 4, baffle; 5, heat exchange tube; 6, cleaning mechanism; 61, rotating tube; 62, suction port; 63, cleaning brush; 64, air outlet; 7, sealing mechanism; 71, mounting rod; 72, sealing ring; 73, connecting rod; 8, reset mechanism; 81, extrusion rod; 82, fixed rod; 83, spring; 9, pulling mechanism; 91, chain; 92, pull ring; 93, positioning column; 94, limiting column; 95, limiting groove; 10, motor; 11, box body; 12, sealing cover; 13, air extractor. Specific implementation manners

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1-6, the present utility model provides a technical solution: a direct-channel structure fluoroplastics steel low-temperature economizer, which includes a tank body 1. Both sides of the tank body 1 are fixedly connected with tube sheets 2. One side of each of the two tube sheets 2 is fixedly connected with a head 3. A number of heat exchange tubes 5 are arranged inside the tank body 1. Two ends of the number of heat exchange tubes 5 are respectively inserted into the two heads 3. The number of heat exchange tubes 5 are all rotatably connected with the two tube sheets 2. A number of baffle plates 4 are fixedly connected to the inner side of the tank body 1. The number of heat exchange tubes 5 are all rotatably connected with the number of baffle plates 4; A cleaning mechanism 6 is arranged between the number of heat exchange tubes 5. One end of the cleaning mechanism 6 penetrates through the corresponding head 3. The cleaning mechanism 6 is provided with a sealing mechanism 7. One side of the sealing mechanism 7 is provided with a reset mechanism 8. One side of the reset mechanism 8 is provided with a pulling mechanism 9; The outer side of one of the heads 3 is fixedly connected with a box body 11. The end of the cleaning mechanism 6 penetrating through the head 3 is inserted into the box body 11. The upper end of the box body 11 is hinged with a sealing cover 12. The bottom end of the box body 11 is fixedly connected with an air extractor 13. One side of the box body 11 is fixedly connected with a motor 10. The dust on the outer wall of the heat exchange tube 5 is cleaned by the cleaning brush 63, and then the cleaned dust is sucked in through a number of air suction ports 62. The dust is discharged along the rotating tube 61 and the air outlet 64. It is more convenient, time-saving and labor-saving to clean the dust on the surface of the heat exchange tube 5, and the heat exchange efficiency of the heat exchange tube 5 is ensured.

[0020] The cleaning mechanism 6 includes a rotating pipe 61, a plurality of suction ports 62, a plurality of cleaning brushes 63, and a plurality of air outlet ports 64. The inside of the rotating pipe 61 is hollow. The rotating pipe 61 is located between a plurality of heat exchange pipes 5. The rotating pipe 61 is rotatably connected to two tube sheets 2. One end of the rotating pipe 61 is inserted into the box body 11 and fixedly connected to the output end of the motor 10. A plurality of air outlet ports 64 are evenly arranged on the outer side of the end of the rotating pipe 61 located in the box body 11. A plurality of suction ports 62 are arranged on the outer side of the rotating pipe 61. All the plurality of suction ports 62 are located inside the tank body 1. A plurality of cleaning brushes 63 are fixedly connected to the outer side of the rotating pipe 61. The widths of all the plurality of cleaning brushes 63 are greater than the distance between the rotating pipe 61 and the corresponding heat exchange pipe 5. The motor 10 drives the rotating pipe 61 to rotate. When the rotating pipe 61 rotates, it drives the plurality of cleaning brushes 63 to rotate. The dust on the outer surfaces of the plurality of heat exchange pipes 5 is cleaned by the plurality of cleaning brushes 63. The plurality of heat exchange pipes 5 will rotate under the action of the cleaning brushes 63, so that the cleaning brushes 63 can fully clean the outer surfaces of the plurality of heat exchange pipes 5. Then, the dust removed by cleaning is sucked in through the suction ports 62; The reset mechanism 8 includes a pressing rod 81, a fixed rod 82, and a spring 83. The fixed rod 82 is horizontally fixed inside one of the air outlet ports 64. The upper end of the pressing rod 81 is movably sleeved with the fixed rod 82. A spring 83 is fixedly connected between one side of the pressing rod 81 and the inner wall of the air outlet port 64. The spring 83 is sleeved around the fixed rod 82. The bottom end of the pressing rod 81 is inserted into the rotating pipe 61. When the pressing rod 81 moves along the fixed rod 82, it will compress the spring 83. When the pressing rod 81 moves, it will also drive the mounting rod 71 to move synchronously. When heat exchange is required, the pressing rod 81 and the mounting rod 71 return to the initial position by the restoring force of the spring 83; The sealing mechanism 7 includes a mounting rod 71, a plurality of sealing rings 72, and a plurality of connecting rods 73. The mounting rod 71 is located on the inner wall of the rotating pipe 61. One end of the mounting rod 71 is fixedly connected to one side of the bottom end of the pressing rod 81. A plurality of sealing rings 72 are all sleeved around the mounting rod 71. The plurality of sealing rings 72 are fixedly connected to the mounting rod 71 through a plurality of connecting rods 73. The plurality of sealing rings 72 respectively correspond to the plurality of suction ports 62. When the sealing ring 72 is in contact with the suction port 62, it can prevent the flue gas from entering the rotating pipe 61. When the sealing ring 72 is separated from the suction port 62, the dust removed by cleaning can be sucked in through the suction port 62;The pulling mechanism 9 includes a chain 91, a pull ring 92, two positioning posts 93, a limiting post 94, and a limiting groove 95. The two positioning posts 93 are both vertically fixed on the outer side of the rotating tube 61. A limiting post 94 is provided on one side of the two positioning posts 93. The limiting post 94 is fixedly connected to the outer side of the rotating tube 61. A limiting groove 95 is provided on the outer side of the limiting post 94. The limiting groove 95 is annular. The pull ring 92 is sleeved around the two positioning posts 93. One side of the pull ring 92 is fixedly connected to a chain 91. The end of the chain 91 far from the positioning post 93 is fixedly connected to the top end of the extrusion rod 81. By pulling the pull ring 92, the pull ring 92 drives the extrusion rod 81 to move through the chain 91. Finally, the pull ring 92 is sleeved in the limiting groove 95 on the outer side of the limiting post 94, so that the extrusion rod 81, the mounting rod 71, and several sealing rings 72 are stably in the current position.;

[0021] Specifically, when the utility model is in use, open the sealing cover 12 at the upper end of the box body 11, then remove the pull ring 92 from the positioning post 93, and then pull the pull ring 92. The pull ring 92 drives the extrusion rod 81 to move through the chain 91. When the extrusion rod 81 moves along the fixed rod 82, it will squeeze the spring 83. When the extrusion rod 81 moves, it will also synchronously drive the mounting rod 71 to move. When the mounting rod 71 moves, it drives several sealing rings 72 to move through several connecting rods 73, so that several sealing rings 72 are separated from several air suction ports 62. Finally, the pull ring 92 is sleeved in the limiting groove 95 on the outer side of the limiting post 94, so that the extrusion rod 81, the mounting rod 71, and several sealing rings 72 are stably in the current position. After the operation is completed, close the sealing cover 12; start the motor 10 and the air extractor 13. The motor 10 and the air extractor 13 are powered by external power equipment. The motor 10 drives the rotating tube 61 to rotate. When the rotating tube 61 rotates, it drives several cleaning brushes 63 to rotate. The dust on the outer surfaces of several heat exchange tubes 5 is cleaned by several cleaning brushes 63. The several heat exchange tubes 5 will rotate under the action of the cleaning brushes 63, so that the cleaning brushes 63 can fully clean the outer surfaces of several heat exchange tubes 5. At the same time, the air extractor 13 will evacuate the inside of the box body 11. The inside of the box body 11 is communicated with the inside of the rotating tube 61 through several air outlet ports 64, so that the inside of the rotating tube 61 will be evacuated. Then, the dust cleaned is sucked in through several air suction ports 62 and discharged along the rotating tube 61 and the air outlet ports 64. It is more convenient, time-saving and labor-saving to clean the dust on the outer surfaces of the heat exchange tubes 5, and the heat exchange efficiency of the heat exchange tubes 5 is ensured. When heat exchange is required, loosen the pull ring 92. The extrusion rod 81 moves reversely under the restoring force of the spring 83, and the mounting rod 71 drives several sealing rings 72 to move. Several sealing rings 72 are attached to several air suction ports 62, so as to prevent flue gas from entering.

[0022] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fluorine plastic steel low-temperature economizer with a straight-channel structure, comprising a tank body (1), characterized in that: Both sides of the tank body (1) are fixedly connected with tube sheets (2). One side of each of the two tube sheets (2) is fixedly connected with a head (3). A number of heat exchange tubes (5) are arranged inside the tank body (1). Two ends of each of the number of heat exchange tubes (5) are respectively inserted into the two heads (3). Each of the number of heat exchange tubes (5) is rotatably connected with the two tube sheets (2). A number of baffle plates (4) are fixedly connected to the inner side of the tank body (1). Each of the number of heat exchange tubes (5) is rotatably connected with the number of baffle plates (4). A cleaning mechanism (6) is arranged between the number of heat exchange tubes (5). One end of the cleaning mechanism (6) penetrates through the corresponding head (3). The cleaning mechanism (6) is provided with a sealing mechanism (7). One side of the sealing mechanism (7) is provided with a reset mechanism (8). One side of the reset mechanism (8) is provided with a pulling mechanism (9). The outer side of one of the heads (3) is fixedly connected with a box body (11). The end of the cleaning mechanism (6) penetrating through the head (3) is inserted into the box body (11). The upper end of the box body (11) is hinged with a sealing cover (12). The bottom end of the box body (11) is fixedly connected with an air extractor (13). One side of the box body (11) is fixedly connected with a motor (10).

2. The fluorine plastic steel low-temperature economizer with a straight channel structure according to claim 1, wherein: The cleaning mechanism (6) includes a rotating tube (61), a number of air suction ports (62), a number of cleaning brushes (63) and a number of air outlet ports (64). The inside of the rotating tube (61) is hollow. The rotating tube (61) is located between the number of heat exchange tubes (5). The rotating tube (61) is rotatably connected with the two tube sheets (2). One end of the rotating tube (61) is inserted into the box body (11) and fixedly connected with the output end of the motor (10). A number of air outlet ports (64) are evenly arranged on the outer side of the end of the rotating tube (61) located inside the box body (11). A number of air suction ports (62) are arranged on the outer side of the rotating tube (61). Each of the number of air suction ports (62) is located inside the tank body (1). A number of cleaning brushes (63) are fixedly connected to the outer side of the rotating tube (61). The width of each of the number of cleaning brushes (63) is greater than the distance between the rotating tube (61) and the corresponding heat exchange tube (5).

3. A straight-channel-structured fluorine-plastic steel low-temperature economizer according to claim 1, characterized in that: The reset mechanism (8) includes a pressing rod (81), a fixing rod (82) and a spring (83). The fixing rod (82) is horizontally fixed inside one of the air outlet ports (64). The upper end of the pressing rod (81) is movably sleeved on the fixing rod (82). A spring (83) is fixedly connected between one side of the pressing rod (81) and the inner wall of the air outlet port (64). The spring (83) is sleeved on the periphery of the fixing rod (82). The bottom end of the pressing rod (81) is inserted into the inside of the rotating tube (61).

4. A straight-channel-structured fluoroplastics-steel low-temperature economizer according to claim 1, characterized in that: The sealing mechanism (7) includes a mounting rod (71), a plurality of sealing rings (72) and a plurality of connecting rods (73). The mounting rod (71) is located on the inner wall of the rotating pipe (61). One end of the mounting rod (71) is fixedly connected to one side of the bottom end of the extrusion rod (81). A plurality of the sealing rings (72) are sleeved on the periphery of the mounting rod (71). A plurality of the sealing rings (72) are fixedly connected to the mounting rod (71) through a plurality of connecting rods (73). A plurality of the sealing rings (72) respectively correspond to a plurality of air suction ports (62).

5. A straight-channel-structured fluorine-plastic steel low-temperature economizer according to claim 1, characterized in that: The pulling mechanism (9) includes a chain (91), a pull ring (92), two positioning columns (93), a limiting column (94) and a limiting groove (95). The two positioning columns (93) are vertically fixed on the outer side of the rotating pipe (61). A limiting column (94) is arranged on one side of the two positioning columns (93). The limiting column (94) is fixedly connected to the outer side of the rotating pipe (61). A limiting groove (95) is arranged on the outer side of the limiting column (94). The limiting groove (95) is annular. The pull ring (92) is sleeved on the periphery of the two positioning columns (93). One side of the pull ring (92) is fixedly connected to a chain (91). The end of the chain (91) far away from the positioning column (93) is fixedly connected to the top end of the extrusion rod (81).

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