Quickly-assembled flue gas heat exchange device

Abstract

The utility model provides a kind of fast installation flue gas heat exchange device, including smoke box, smoke box includes the upper box body and lower box body of insertable, upper box body and lower box body flange connection, upper box body and lower box body inside form smoke cavity;Upper header and lower header are equipped in smoke cavity, upper header is located smoke cavity top area, lower header is located smoke cavity bottom area, and lower header top is equipped with multiple connecting disc, and connecting disc top is equipped with connector, and connector outer peripheral wall is equipped with at least one slot;Bundling pipe, there are multiple bundling pipes, and the bottom end of bundling pipe is equipped with the butt joint of matching with connector, and the inner peripheral wall of butt joint is equipped with the plug-in block of matching with slot, and plug-in block inserts slot, and connector and butt joint fast installation connection, and the other end of bundling pipe is connected with upper header, and bundling pipe penetrates smoke cavity and is arranged along vertical direction. Simultaneously, bundle pipe is connected between upper header and lower header by fast installation slot and plug-in block structure, the independent replacement of single bundling pipe is realized, and maintenance difficulty and cost are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange devices, and in particular to a quick-install flue gas heat exchange device. Background Technology

[0002] In modern society, the efficient use of energy has become an important issue. Flue gas waste heat recovery technology is a key technology in this regard. It can effectively utilize the heat carried in the flue gas emitted during industrial processes, thereby achieving energy conservation and emission reduction.

[0003] A Chinese patent application (CN202020875759.5) discloses a heat exchange device for flue gas waste heat recovery, comprising a heat exchange device and a filter device. The lower end of the heat exchange device is welded with a flue gas inlet, and the upper end of the filter device is welded with a flue gas outlet. One side of the heat exchange device has a water outlet and a water inlet penetrating its outer wall, and the other side has an air inlet and an air outlet penetrating its outer wall. One end of the water inlet is located inside the heat exchange device and has a water pipe welded thereon; the other end of the water pipe is welded to the water outlet. One end of the air inlet is located inside the heat exchange device and has a heat exchange tube welded thereon. This invention, through its filter device and matching auxiliary structures, provides a flue gas filtration structure for the entire structure after flue gas treatment, effectively performing simple filtration of the flue gas and avoiding direct emission that would pollute the environment.

[0004] However, the above-mentioned patent has certain defects in use. Because the bundle tubes in the smoke box are subjected to high-temperature flue gas for a long time, they are prone to dust accumulation and corrosion. When repairing the bundle tubes, they need to be completely disassembled and replaced. Moreover, the repair cost is high and the time is long, which seriously affects the operating efficiency of the equipment.

[0005] To address these issues, a quick-installation flue gas heat exchange device is proposed. Utility Model Content

[0006] In order to overcome the shortcomings of existing technologies that require complete disassembly and replacement of bundled tubes for maintenance, and which are costly and time-consuming, this utility model provides a quick-install flue gas heat exchange device.

[0007] This utility model is achieved using the following technical solution: A quick-install flue gas heat exchange device includes a smoke box, which includes an upper box and a lower box that can be plugged in. The upper box and the lower box are connected by flanges, and the interior of the upper box and the lower box forms a smoke chamber. The smoke chamber is equipped with an upper header and a lower header. The upper header is located in the top area of ​​the smoke chamber, and the lower header is located in the bottom area of ​​the smoke chamber. The top of the lower header is equipped with multiple connecting plates, and the top of the connecting plates is equipped with connectors. The outer peripheral wall of the connector has at least one slot. The bundle tube has multiple sections. The bottom end of the bundle tube has a mating head that matches the connector. The inner circumferential wall of the mating head has a plug that matches the slot. The plug is inserted into the slot, and the connector and the mating head are quickly connected. The other end of the bundle tube is connected to the upper header. The bundle tube passes through the smoke chamber and is arranged in a vertical direction.

[0008] As a preferred embodiment of this utility model, the docking head is provided with a docking plate corresponding to the connecting plate, and the docking plate and the connecting plate are provided with a plurality of reserved holes, and positioning pins are inserted into the reserved holes for fixation.

[0009] As a preferred embodiment of this utility model, a plurality of fins are provided on the outer peripheral wall of the bundle tube. The fins are evenly distributed along the axial direction of the bundle tube, and the fins are arranged at an incline. A guide groove is provided at the inclined bottom end of the fin.

[0010] As a preferred embodiment of this utility model, a smoke inlet pipe is provided on one side of the lower box and a smoke outlet pipe is provided on one side of the upper box, and both the smoke inlet pipe and the smoke outlet pipe are connected to the smoke chamber.

[0011] In a preferred embodiment of this utility model, the lower manifold is located at the bottom of the lower housing, and inlet pipes are symmetrically arranged at the bottom of the lower manifold, which pass through the lower housing and connect to external equipment.

[0012] As a preferred embodiment of this utility model, the upper header is located at the top of the upper housing, and the top of the upper header is provided with a liquid outlet pipe, which passes through the upper housing and connects to external equipment.

[0013] As a preferred embodiment of this utility model, the connector has a built-in sealing ring that matches the end face of the connector.

[0014] Compared with existing technologies, the advantages of this utility model are: 1. By disassembling the cigarette box into two parts, an upper box and a lower box, and connecting them with flanges, it is easy to disassemble and maintain. At the same time, the bundle tubes are connected between the upper and lower boxes through quick-install slots and plug structures, enabling independent replacement of individual bundle tubes, which greatly reduces the difficulty and cost of maintenance.

[0015] 2. The fins on the bundle tube not only increase the heat exchange area, but also guide the flow of flue gas through their inclined arrangement. At the same time, the guide grooves prevent the flue gas from accumulating on the fin surface, effectively improving heat exchange efficiency and reducing the risk of blockage.

[0016] 3. The sealing ring built into the connector ensures a tight seal when the connector is quickly connected to the mating connector to prevent liquid leakage. Attached Figure Description

[0017] Figure 1 This is the overall assembly structure diagram of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a structural diagram of the butt joint of this utility model; Figure 4 This is a structural diagram of the bundled tube of this utility model; Figure 5 This is an overall sectional view of the present invention; In the diagram: 1. Upper housing; 11. Liquid outlet pipe; 12. Upper header; 13. Smoke outlet pipe; 2. Lower housing; 21. Liquid inlet pipe; 22. Lower header; 23. Smoke inlet pipe; 3. Connector; 31. Connecting plate; 32. Slot; 4. Bundle tube; 41. Connecting joint; 42. Insert block; 43. Connecting plate; 5. Reserved hole; 51. Positioning pin; 6. Sealing ring; 7. Fin; 71. Guide channel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Example: Please see Figures 1-5 A quick-install flue gas heat exchange device includes a smoke box, which includes an upper box 1 and a lower box 2 that can be plugged in. The upper box 1 and the lower box 2 are connected by flanges, and a smoke chamber is formed inside the upper box 1 and the lower box 2.

[0020] In this implementation, please refer to the specific details. Figure 1 Traditional smoke boxes are all of one-piece structure. This smoke box is divided into two parts: an upper box 1 and a lower box 2, which facilitates the transportation and on-site installation of the equipment, and is especially suitable for working environments with limited space. The upper box 1 and the lower box 2 are connected by a flange to ensure a seal. After the upper box 1 and the lower box 2 are connected and fixed, a smoke chamber is formed inside for the circulation of flue gas. A smoke inlet pipe 23 is located on the lower side of the lower box 2, and a smoke outlet pipe 13 is located on the upper side of the upper box 1. Both the smoke inlet pipe 23 and the smoke outlet pipe 13 are connected to the smoke chamber. The smoke inlet pipe 23 is located in the lower part of the smoke chamber, and the smoke outlet pipe 13 is located in the upper part, forming a flue gas circulation channel from bottom to top.

[0021] The smoke chamber is provided with an upper header 12 and a lower header 22. The upper header 12 is located in the top area of ​​the smoke chamber, and the lower header 22 is located in the bottom area of ​​the smoke chamber. The top of the lower header 22 is provided with multiple connecting plates 31, and the top of the connecting plate 31 is provided with a connector 3. The outer peripheral wall of the connector 3 is provided with at least one slot 32.

[0022] In this embodiment, specific reference is made. Figure 3The lower header 22 is located at the bottom of the lower housing 2, and inlet pipes 21 are symmetrically arranged at the bottom of the lower header 22, which pass through the lower housing 2 and connect to external equipment. The upper header 12 is located at the top of the upper housing 1, and outlet pipes 11 are provided at the top of the upper header 12, which pass through the upper housing 1 and connect to external equipment. Both the upper header 12 and the lower header 22 are flow collection devices used to collect and distribute liquid media. The lower header 22 is used to collect liquid from the inlet pipes 21 and distribute it to each bundle of tubes 4, while the upper header 12 is used to collect the liquid after heat exchange and discharge it to the external system through the outlet pipes 11, thereby achieving efficient heat exchange.

[0023] Multiple connectors 3 are provided. The function of connectors 3 and connecting discs 31 is to quickly connect the bundle tube 4. Multiple slots 32 can be provided, preferably one or two.

[0024] Bundle tube 4, multiple bundle tubes are provided. The bottom end of bundle tube 4 is provided with a mating head 41 that matches the connector 3. The inner peripheral wall of mating head 41 is provided with a plug 42 that matches the slot 32. The plug 42 is inserted into the slot 32. The connector 3 and mating head 41 are quickly connected. The other end of bundle tube 4 is connected to the upper header 12. Bundle tube 4 passes through the smoke chamber and is arranged in the vertical direction.

[0025] The connector 41 is provided with a mating plate 43 corresponding to the connecting plate 31. The mating plate 43 and the connecting plate 31 are provided with a plurality of reserved holes 5, and a positioning pin 51 is inserted into the reserved hole 5 for fixation.

[0026] In this embodiment, specific reference is made. Figure 3 and Figure 4 Connector 3 is connected to the lower header 22, connector 3 is connected to the bundle tube 4, and the bundle tube 4 is connected to the upper header 12, forming a complete fluid passage. The number of bundle tubes 4 matches the number of connectors 3. One end of the bundle tube 4 is connected to the connector 3 via a butt joint 41 for quick installation, and the other end extends to the upper header 12 and is fixedly connected to it. The bundle tube 4 is located inside the smoke chamber and arranged vertically. The bundle tube 4 is located between the upper header 12 and the lower header 22. The number of inserts 42 is the same as the number of slots 32. When installing the bundle tube 4, align the butt joint 41 with the connector 3, align the insert 42 with the slot 32, and insert it. When the insert 42 is fully embedded in the slot 32, the mating plate 43 and the connecting plate 31 are fitted together. Multiple reserved holes 5 are aligned with each other and fastened by positioning pins 51, which are specifically bolts.

[0027] Specifically, a number of fins 7 are provided on the outer peripheral wall of the bundle tube 4. The fins 7 are evenly distributed along the axial direction of the bundle tube 4. The fins 7 are arranged at an incline, and a guide groove 71 is provided at the inclined bottom end of the fin 7.

[0028] In this embodiment, specific reference is made. Figure 4The fins 7 are specifically welded to the outer wall of the bundle tube 4 and are distributed at equal intervals along the axial direction. The fins 7 are arranged at an angle, and the inclined surface of the fins 7 forms a certain angle with the flue gas flow direction to enhance the turbulence effect. The guide groove 71 at the contact surface between the fins 7 and the bundle tube 4, that is, the inclined bottom end of the fins 7, forms a flue gas guide channel, so that the high-temperature flue gas flows along the direction of the guide groove 71 and makes full contact with the surface of the fins 7. At the same time, the high-temperature flue gas will generate droplets, which slide down along the guide groove 71 to the bottom of the flue chamber, avoiding the accumulation on the surface of the fins 7 and affecting the heat exchange efficiency.

[0029] Specifically, the connector 41 has a built-in sealing ring 6, which matches the end face of the connector 3.

[0030] In this embodiment, specific reference is made. Figure 4 ,and Figure 5 The sealing ring 6 is specifically a high-temperature resistant sealing ring 6, which is installed between the mating surfaces of the connector 3 and the butt joint 41 to prevent leakage at the connection of the bundle tube 4. The end face of the sealing ring 6 has an inclined structure to guide the flow of liquid.

[0031] The principle of this utility model is as follows: When installing the bundle tube 4, the connector 41 is aligned with the connector 3, and the insert 42 is aligned with the slot 32 and inserted. When the insert 42 is fully embedded in the slot 32, the mating plate 43 and the connector 31 are fitted together, and the multiple reserved holes 5 are aligned with each other and fastened by the positioning pin 51. At this time, the sealing ring 6 is also located between the mating surfaces of the connector 3 and the connector 41. Then, the upper box 1 and the lower box 2 are connected by bolts to form a sealed space for the entire device. When maintenance or replacement is required, the positioning pin 51 can be removed to separate the mating plate 43 from the connector 31. Then, the connector 41 can be pulled out to disengage the insert 42 from the slot 32, and the bundle tube 4 can be removed as a whole without disassembling other parts, making maintenance convenient.

[0032] After entering the flue gas chamber through the liquid inlet pipe 21, the high-temperature flue gas rises naturally and comes into full contact with the fins 7 on the outer wall of the bundle tube 4. Heat is transferred to the internal fluid through the tube wall, achieving efficient heat exchange. Subsequently, the low-temperature flue gas is discharged from the flue gas outlet pipe 13, completing the internal heat exchange.

[0033] External fluid is introduced into the lower header 22 through the inlet pipe 21 and evenly distributed into each bundle tube 4. The fluid flows from bottom to top in the bundle tube 4, exchanges heat with the external high-temperature flue gas, and then enters the upper header 12. It is then discharged through the outlet pipe 11 to complete the heat exchange cycle.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A quick-installation flue gas heat exchanger, characterized in that, Includes a smoke box, which includes an insertable upper box (1) and a lower box (2), the upper box (1) and the lower box (2) are connected by flanges, and the upper box (1) and the lower box (2) form a smoke chamber inside; The smoke chamber is provided with an upper header (12) and a lower header (22). The upper header (12) is located in the top area of ​​the smoke chamber, and the lower header (22) is located in the bottom area of ​​the smoke chamber. The lower header (22) is provided with multiple connecting plates (31) on the top. The connecting plates (31) are provided with connectors (3) on the top. The connectors (3) have at least one slot (32) on their outer peripheral wall. Bundle tube (4), multiple bundle tubes (4) are provided. The bottom end of the bundle tube (4) is provided with a mating head (41) that matches the connector (3). The inner circumferential wall of the mating head (41) is provided with a plug (42) that matches the slot (32). The plug (42) is inserted into the slot (32). The connector (3) and the mating head (41) are quickly connected. The other end of the bundle tube (4) is connected to the upper header (12). The bundle tube (4) passes through the smoke chamber and is arranged in the vertical direction.

2. The quick-installation flue gas heat exchanger according to claim 1, characterized in that: The connector (41) is provided with a mating plate (43) corresponding to the connecting plate (31). The mating plate (43) and the connecting plate (31) are provided with a plurality of reserved holes (5). A positioning pin (51) is inserted into the reserved hole (5) for fixation.

3. The quick-installation flue gas heat exchanger according to claim 2, characterized in that: The outer peripheral wall of the bundle tube (4) is provided with a number of fins (7), which are evenly distributed along the axial direction of the bundle tube (4). The fins (7) are arranged at an inclination, and the bottom of the inclination fins (7) is provided with a guide groove (71).

4. The quick-installation flue gas heat exchanger according to claim 3, characterized in that: A smoke inlet pipe (23) is provided on one side of the lower box (2), and a smoke outlet pipe (13) is provided on one side of the upper box (1). Both the smoke inlet pipe (23) and the smoke outlet pipe (13) are connected to the smoke chamber.

5. The quick-installation flue gas heat exchanger according to claim 1, characterized in that: The lower header (22) is located at the bottom of the lower housing (2). The bottom of the lower header (22) is symmetrically provided with liquid inlet pipes (21), which pass through the lower housing (2) and connect to external equipment.

6. The quick-installation flue gas heat exchanger according to claim 5, characterized in that: The upper header (12) is located at the top inside the upper box (1). The top of the upper header (12) is provided with a liquid outlet pipe (11), which passes through the upper box (1) and connects to external equipment.

7. The quick-installation flue gas heat exchanger according to claim 1, characterized in that: The connector (41) has a built-in sealing ring (6) that matches the end face of the connector (3).

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