A high-temperature flue gas pipeline waste heat power generation connecting device

Abstract

The utility model discloses a kind of high-temperature flue gas pipeline waste heat power generation connecting devices, it is related to flue gas preheating power generation technical field, including flue gas pipeline assembly, power generation component, clamping component;Flue gas pipeline assembly includes flue gas pipeline body, filter, exhaust pipe, locking portion;Power generation component includes storage battery box, thermoelectric module, smoke guide pipe, battery;Smoke guide pipe is equipped with limiting piece, locking piece in;Clamping component includes supporting member, clamping portion, pusher, positioning piece;By setting limiting piece, the exhaust pipe inserted into smoke guide pipe is limited, while closing exhaust pipe and smoke guide pipe, avoid flue gas escape, the pusher of setting pushes clamping portion and is inserted into smoke guide pipe, exhaust pipe, initially clamping smoke guide pipe, exhaust pipe, while pusher drives locking piece and inserts into locking portion, secondary fixation to exhaust pipe, smoke guide pipe, realize the quick clamping of flue gas pipeline assembly and power generation component, installation is convenient to disassemble, and different inner diameter's smoke guide pipe and exhaust pipe can be connected.

Description

Technical Field

[0001] This utility model relates to the field of flue gas preheating power generation technology, specifically to a high-temperature flue gas pipeline waste heat power generation connection device. Background Technology

[0002] The waste heat recovery and utilization device for flue gas from coal-fired power generation boilers is used to recover and utilize the waste heat generated during the operation of coal-fired power generation boilers. It is widely used in coal-fired power generation boiler applications, such as power plants, and has good performance. With the continuous development of society, people's demand for waste heat recovery and utilization devices for flue gas from coal-fired power generation boilers is gradually increasing.

[0003] Utility model patent CN210688286U discloses a waste heat recovery and utilization device for flue gas from a coal-fired power plant boiler. The device includes a waste heat insulation box, an input recovery pipe fixedly installed on the upper surface of the box, an output recovery pipe fixedly installed on one outer surface of the box, a waste heat heating pipe fixedly installed on the inner surface of the box, a waste heat recovery box fixedly installed on the inner surface of the box inside the heating pipe, and a pipe fixing seat fixedly installed on the other outer surface of the box. This utility model's waste heat recovery and utilization device for flue gas from a coal-fired power plant boiler increases the contact area with the flue gas when receiving high-temperature waste heat, thereby increasing the amount of heat recovered, absorbing heat more efficiently, and more comprehensively covering the recovery box, allowing for more thorough heat release and improving waste heat utilization efficiency, while also providing insulation.

[0004] However, in practice, existing high-temperature flue gas waste heat power generation devices have many shortcomings in installation and connection structures. Traditional connection methods mostly use welding or flange connections, which are complex, time-consuming, and labor-intensive, and require high technical skills from installers. In harsh industrial environments such as high temperature and vibration, welded points are prone to cracking, and flange connections are prone to loosening and leakage, which not only affect the normal operation of the device but also pose safety hazards. In addition, traditional connection structures are difficult to adapt to flue gas pipelines of different diameters, have poor versatility, and limit the widespread application of waste heat power generation devices. Utility Model Content

[0005] The main purpose of this utility model is to provide a high-temperature flue gas pipeline waste heat power generation connection device to solve the problems of easy cracking and loosening of the connection points of existing high-temperature flue gas pipeline preheating power generation devices and difficulty in connecting flue gas pipelines of different diameters.

[0006] To achieve the above objectives, this utility model provides a high-temperature flue gas pipeline waste heat power generation connection device, including a power storage box, a thermoelectric power generation module installed on the power storage box, a flue pipe on the power storage box, and a battery connected to the thermoelectric power generation module via wires; it also includes: A flue gas duct assembly includes a flue gas duct body and a detachable filter element disposed within the flue gas duct body; the flue gas duct body is provided with an exhaust pipe; the exhaust pipe is provided with a locking part; The smoke guide pipe is equipped with a limiting component inside, and a locking component is movably installed on the smoke guide pipe; the exhaust pipe is inserted into the smoke guide pipe under the action of external force and its end abuts against the limiting component. The snap-fit ​​assembly includes a support member disposed on the flue gas duct body and a snap-fit ​​part movably disposed on the support member; a pusher is provided between the support member and the snap-fit ​​part; a positioning member is provided inside the snap-fit ​​part; the pusher pushes the snap-fit ​​part toward the exhaust pipe under the action of external force, so that the positioning member is inserted into the flue gas guide pipe and the exhaust pipe in sequence, thereby causing the snap-fit ​​part to push the locking member to be inserted into the locking part.

[0007] As a further improvement of this utility model, the flue gas duct body is provided with a through groove, and the flue gas duct body is provided with mounting holes on both sides; the filter element includes a filter screen passing through the through groove and located inside the flue gas duct body, and a connecting rod set on the filter screen; a fixing rod is slidably provided on the connecting rod; a spring is provided between the fixing rod and the connecting rod, and the fixing rod is movably inserted into the mounting hole.

[0008] As a further improvement of this utility model, the locking part includes a locking groove that surrounds the outer wall of the exhaust pipe; the width of the locking groove decreases from the outer wall of the exhaust pipe toward the center of the exhaust pipe.

[0009] As a further improvement of this utility model, the limiting member includes a limiting ring disposed on the smoke guide pipe; the limiting ring is provided with a sealing element; the locking member includes multiple sets of locking blocks slidably disposed on the smoke guide pipe; the locking blocks are inserted into the locking groove under the push of the pushing member to connect the smoke guide pipe and the exhaust pipe.

[0010] As a further improvement of this utility model, the support member includes a support plate disposed on the flue gas duct body and a threaded sleeve disposed on the support plate; the pushing member includes a threaded rod disposed in the threaded sleeve; the snap-fit ​​part includes a connecting plate movably disposed on the support plate and a return spring disposed between the connecting plate and the support plate; the connecting plate is provided with a stabilizing cover.

[0011] As a further improvement of this utility model, the positioning component includes a snap-fit ​​rod disposed inside the stabilizing cover, an insertion hole disposed on the smoke guide pipe, and a positioning hole disposed on the exhaust pipe; the axes of the snap-fit ​​rod, the insertion hole, and the positioning hole coincide.

[0012] The beneficial effects of this utility model are reflected in: By setting a limiting component, the exhaust pipe inserted into the flue pipe can be limited, and the exhaust pipe and flue pipe are sealed to prevent flue gas from escaping. The set pusher pushes the locking part into the flue pipe and exhaust pipe at one time, and the flue pipe and exhaust pipe are locked together for the first time. At the same time, the pusher drives the locking part to be inserted into the locking part, and the exhaust pipe and flue pipe are fixed for the second time. This realizes the quick locking of the flue gas pipeline assembly and the power generation assembly, which is convenient for installation and disassembly. It ensures the stable operation of the device in the high temperature flue gas environment, reduces the risk of failure caused by loose connection, and can connect flue pipes and exhaust pipes with different inner diameters. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a high-temperature flue gas pipeline waste heat power generation connection device according to the present invention. Figure 2 This is a schematic diagram of the limiting and locking components of a high-temperature flue gas pipeline waste heat power generation connection device according to the present invention. Figure 3 This is a schematic diagram of the snap-fit ​​part of a high-temperature flue gas pipeline waste heat power generation connection device according to the present invention. Figure 4 This is a schematic diagram of the filter element structure of a high-temperature flue gas pipeline waste heat power generation connection device according to the present invention; Explanation of reference numerals in the attached figures: 1. Flue gas duct body; 2. Filter element; 201. Filter screen; 202. Connecting rod; 203. Fixing rod; 204. Telescopic spring; 205. Frame; 206. Through hole; 207. Movable tube; 3. Exhaust pipe; 4. Locking part; 5. Energy storage box; 6. Thermoelectric power generation module; 7. Smoke guide pipe; 8. Wire; 9. Battery; 10. Limiting component; 1001. Limiting ring; 1002. Sealing component; 11. Locking mechanism Components; 1101, locking block; 1102, slide groove; 12, support component; 1201, support plate; 1202, threaded sleeve; 13, snap-fit ​​part; 1301, connecting plate; 1302, return spring; 1303, stabilizing cover; 1304, connecting groove; 14, pushing component; 1401, threaded rod; 15, positioning component; 1501, snap-fit ​​rod; 1502, through hole; 1503, positioning hole; 16, mounting hole. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0015] In one embodiment, see Figure 1 This utility model discloses a high-temperature flue gas pipeline waste heat power generation connection device, which includes a flue gas pipeline assembly, a power generation assembly, and a snap-fit ​​assembly.

[0016] The flue gas duct assembly includes a flue gas duct body 1, a detachable filter element 2 installed inside the flue gas duct body 1, an exhaust pipe 3 on the flue gas duct body 1, and a locking part 4 on the exhaust pipe 3; the power generation assembly includes a storage box 5, a thermoelectric generator module 6 installed on the storage box 5, a smoke guide pipe 7 on the storage box 5, and a battery 9 connected to the thermoelectric generator module 6 via a wire 8; a limiting part 10 is installed inside the smoke guide pipe 7, and a locking part 11 is movably installed on the smoke guide pipe 7; the exhaust pipe 3 is inserted under external force. The smoke guide pipe 7 is inside and its end abuts against the limiting member 10; the snap-fit ​​assembly includes a support member 12 provided on the flue gas pipe body 1 and a snap-fit ​​part 13 movably provided on the support member 12. A pusher 14 is provided between the support member 12 and the snap-fit ​​part 13. A positioning member 15 is provided inside the snap-fit ​​part 13; the pusher 14 pushes the snap-fit ​​part 13 toward the exhaust pipe 3 under the action of external force, so that the positioning member 15 is inserted into the smoke guide pipe 7 and the exhaust pipe 3 in sequence, thereby causing the snap-fit ​​part 13 to push the locking member 11 into the locking part 4.

[0017] Further, see Figure 1 , 4 The flue gas duct body 1 is provided with a through groove, and the flue gas duct body 1 is provided with mounting holes 16 on both sides; the filter element 2 includes a filter screen 201 that passes through the through groove and is located in the flue gas duct body 1, a connecting rod 202 provided on the filter screen 201, a fixing rod 203 that is slidably provided on the connecting rod 202, a telescopic spring 204 that is provided between the fixing rod 203 and the connecting rod 202, and the fixing rod 203 is movably inserted into the mounting hole 16.

[0018] Preferably, the through groove and the mounting hole 16 are located on the same vertical plane, and two sets of mounting holes 16 are provided and located on the outer wall of the flue gas duct on both sides of the through groove.

[0019] Preferably, the mounting hole 16 does not penetrate the flue gas duct body 1 to prevent flue gas from escaping from the mounting hole 16.

[0020] Preferably, the filter screen 201 is provided with a mesh frame 205 on the outside, the connecting rod 202 is an "L" shaped structure, the long side end of the connecting rod 202 is fixedly connected to the mesh frame 205, the short side end of the connecting rod 202 is provided with a through hole 206, and a movable tube 207 is provided at the through hole 206, through which the connecting rod 202 passes.

[0021] Preferably, the two ends of the telescopic spring 204 are fixedly connected to the movable tube 207 and the connecting rod 202, respectively.

[0022] In the above setup, after the filter screen 201 is inserted into the flue gas duct body 1 through the through groove, since the telescopic spring 204 is in its natural state, the connecting rod 202 will abut against the flue gas duct body 1 as the filter screen 201 moves downward. At this time, pulling the connecting rod 202 will cause the telescopic spring 204 to extend and retract, and the end of the connecting rod 202 facing the flue gas duct body 1 will enter the movable tube 207, thereby preventing the connecting rod 202 from abutting against the flue gas duct body 1. After the filter screen 201 is fully inserted into the flue gas duct body 1... When the connecting rod 202 is released, the restoring force of the telescopic spring 204 causes the connecting rod 202 to move toward the flue gas duct body 1. The connecting rod 202 is inserted into the mounting hole 16, thus completing the installation of the filter screen 201. When it is necessary to remove the filter screen 201 for maintenance or replacement, pull the connecting rod 202 to separate it from the mounting hole 16, and the filter screen 201 can be taken out from the slot. The filter screen 201 is detachably connected to the flue gas duct body 1, thereby improving the convenience of installing and removing the filter screen 201.

[0023] It should be noted that, in order to prevent flue gas from escaping through the gap between the slot and the filter screen 201, a high-temperature sealing layer is provided on the top outer wall of the filter screen 201. This high-temperature sealing layer uses existing materials and can seal the gap between the slot and the filter screen 201.

[0024] Further, see Figure 1 The locking part 4 includes a locking groove that surrounds the outer wall of the exhaust pipe 3, and the width of the locking groove decreases from the outer wall of the exhaust pipe 3 toward the center of the exhaust pipe 3.

[0025] Preferably, the vertical interface of the locking groove has a "V" shaped structure.

[0026] Further, see Figure 1 , 2 The limiting member 10 includes a limiting ring 1001 disposed on the smoke guide pipe 7, and a sealing member 1002 is provided on the limiting ring 1001; the locking member 11 includes multiple sets of locking blocks 1101 slidably disposed on the smoke guide pipe 7, and the locking blocks 1101 are inserted into the locking groove under the push of the pusher 14 to connect the smoke guide pipe 7 with the exhaust pipe 3.

[0027] Preferably, the seal 1002 is made of graphite.

[0028] Preferably, the smoke guide pipe 7 is provided with multiple sets of sliding grooves 1102 at intervals along the circumference, and the locking block 1101 has a fan-shaped structure and the locking block 1101 slides within the sliding groove 1102.

[0029] Further, see Figure 1 , 3The support member 12 includes a support plate 1201 disposed on the flue gas duct body 1 and a threaded sleeve 1202 disposed on the support plate 1201; the pusher 14 includes a threaded rod 1401 disposed in the threaded sleeve 1202; the snap-fit ​​part 13 includes a connecting plate 1301 movably disposed on the support plate 1201 and a return spring 1302 disposed between the connecting plate 1301 and the support plate 1201, and a stabilizing cover 1303 is provided on the connecting plate 1301.

[0030] Preferably, the support plate 1201 has a "U" shaped structure. The short side of the support plate 1201 is fixedly connected to the flue gas duct body 1. Two sets of support plates 1201 are provided. The support plate 1201 has holes, and the threaded sleeve 1202 is fixedly installed at the holes.

[0031] Preferably, the long side end of the support plate 1201 is provided with a connecting groove 1304, and the two ends of the reset spring 1302 are fixedly connected to the connecting groove 1304 and the connecting plate 1301 respectively.

[0032] Preferably, the stabilizing cover 1303 has an arc-shaped structure and is located directly above the slide groove 1102.

[0033] Further, see Figure 1 , 3 The positioning component 15 includes a snap-fit ​​rod 1501 disposed inside the stabilizing cover 1303, an insertion hole 1502 disposed on the smoke guide pipe 7, and a positioning hole 1503 disposed on the exhaust pipe 3. The axes of the snap-fit ​​rod 1501, the insertion hole 1502, and the positioning hole 1503 coincide.

[0034] Preferably, two sets of stabilizing covers 1303 are provided, and each set of stabilizing covers 1303 is provided with two sets of locking rods 1501.

[0035] Preferably, the exhaust pipe 3 is provided with four sets of positioning holes 1503. The two sets of positioning holes 1503 are located on the upper end face and the lower end face of the exhaust pipe 3, respectively. The positioning holes 1503 do not penetrate the exhaust pipe 3 to prevent smoke from escaping from the positioning holes 1503.

[0036] Preferably, the smoke guide pipe 7 is provided with four sets of insertion holes 1502, and the insertion holes 1502 are arranged in pairs and located on the upper end face and lower end face of the smoke guide pipe 7 respectively.

[0037] In the above setup, after the exhaust pipe 3 is inserted into the smoke guide pipe 7, the end of the exhaust pipe 3 abuts against the limiting ring 1001. By rotating the threaded rod 1401, it moves towards the connecting plate 1301, thereby pushing the connecting plate 1301 to move the stabilizing cover 1303 towards the exhaust pipe 3. The return spring 1302 is stretched, and the snap-fit ​​rod 1501 enters the insertion hole 1502 and finally enters the positioning hole 1503, thus connecting the exhaust pipe 3 and the smoke guide pipe 7 through the snap-fit ​​rod 1501. During the rotation of the threaded rod 1401, by controlling the distance of movement of the upper and lower sets of threaded rods 1401, the coaxial installation of the exhaust pipe 3 and the smoke guide pipe 7 can be controlled. Ensure that the end of the exhaust pipe 3 abuts against the limiting ring 1001; at the same time, as the locking rod 1501 moves toward the exhaust pipe 3, the stabilizing cover 1303 pushes the locking block 1101 down into the locking groove. The exhaust pipe 3 and the smoke guide pipe 7 are connected again by the locking block 1101 engaging with the locking groove. Due to the "V" shaped structure of the locking groove, after the locking block 1101 enters the locking groove, it can apply a force to the exhaust pipe 3 to move toward the limiting ring 1001, thereby making the end of the exhaust pipe 3 abut against the limiting ring 1001. Under the action of the sealing element 1002, the exhaust pipe 3 and the limiting ring 1001 are sealed to prevent the smoke from escaping.

[0038] In this embodiment, when connecting the flue gas duct assembly and the power generation assembly, the smoke guide pipe 7 on the power generation assembly is moved so that the exhaust pipe 3 enters the interior of the smoke guide pipe 7. The end of the exhaust pipe 3 abuts against the limiting ring 1001. Then, the threaded rod 1401 is rotated and moved toward the exhaust pipe 3. The threaded rod 1401 pushes the connecting plate 1301, the stabilizing cover 1303, and the locking rod 1501 toward the exhaust pipe 3, so that the locking rod 1501 enters the through hole 1502. The stabilizing cover 1303 then moves down and pushes the locking block. 1101 is lowered and inserted into the locking groove. The snap-fit ​​rod 1501 passes through the insertion hole 1502, the positioning hole 1503, and the locking block 1101 is inserted into the locking groove to connect the exhaust pipe 3 and the guide pipe 7. This enables quick snap-fit ​​connection between the flue gas pipeline assembly and the power generation assembly, facilitating installation and disassembly. It ensures stable operation of the device in a high-temperature flue gas environment, reduces the risk of failure due to loose connections, and allows the connection of guide pipes 7 with different inner diameters to the exhaust pipe 3 (when the inner diameter of the guide pipe 7 is larger than the outer diameter of the exhaust pipe 3).

[0039] The filter element 2 is used to intercept impurities in the high-temperature flue gas to ensure the efficient operation of the subsequent power generation stage. The bottom of the mesh frame 205 is closely attached to the inner wall of the flue gas pipe body 1. When the high-temperature flue gas flows in the pipe, the impurities are intercepted by the filter screen to prevent them from entering the energy storage box 5 area and affecting the heat exchange efficiency and service life of the thermoelectric power generation module 6. After the device is installed and the filter element 2 is working properly, it enters the waste heat power generation and electrical energy storage stage. High-temperature flue gas flows inside the flue gas duct body 1, and the heat it carries raises the temperature of the flue gas duct body 1. The thermoelectric power generation module 6 on the top of the energy storage box 5 utilizes the temperature difference between the hot end near the flue gas duct body 1 and the cold end away from the flue gas duct body 1, which are in contact with the external environment, to generate electrical energy based on the Seebeck effect. Specifically, the heat of the high-temperature flue gas is conducted to the hot end of the thermoelectric power generation module 6, causing the electrons at the hot end to gain energy and become free electrons. The free electrons diffuse to the cold end, forming electron accumulation at the cold end, thereby generating a potential difference across the thermoelectric power generation module 6, realizing the conversion of thermal energy into electrical energy. The generated electrical energy is transmitted through the wire 8 to the battery 9 outside the energy storage box 5 for storage. The battery 9 stores the electrical energy, which can provide power support for subsequent electrical equipment when needed, realizing the recovery and utilization of waste heat from high-temperature flue gas, saving energy and reducing thermal pollution caused by direct emission of high-temperature flue gas.

[0040] It should be noted that the thermoelectric power generation module 6 and the battery 9 are existing structures, and their connection methods and working principles are also existing technologies. This application does not propose any improvements to their structures.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature flue gas pipeline waste heat power generation connection device, comprising a power storage box (5), a thermoelectric power generation module (6) installed on the power storage box (5), a flue gas guide pipe (7) provided on the power storage box (5), and a battery (9) provided outside the thermoelectric power generation module (6) through a wire (8); characterized in that, Also includes: The flue gas duct assembly includes a flue gas duct body (1) and a detachable filter element (2) disposed inside the flue gas duct body (1); the flue gas duct body (1) is provided with a smoke exhaust pipe (3); the smoke exhaust pipe (3) is provided with a locking part (4). The smoke guide pipe (7) is provided with a limiting member (10), and a locking member (11) is movably provided on the smoke guide pipe (7); the exhaust pipe (3) is inserted into the smoke guide pipe (7) under the action of external force and its end abuts against the limiting member (10); The snap-fit ​​assembly includes a support member (12) disposed on the flue gas duct body (1) and a snap-fit ​​part (13) movably disposed on the support member (12); a pusher (14) is provided between the support member (12) and the snap-fit ​​part (13); a positioning member (15) is provided inside the snap-fit ​​part (13); the pusher (14) pushes the snap-fit ​​part (13) toward the exhaust pipe (3) under the action of external force, so that the positioning member (15) is inserted into the flue pipe (7) and the exhaust pipe (3) in sequence, thereby causing the snap-fit ​​part (13) to push the locking member (11) to be inserted into the locking part (4).

2. The high-temperature flue gas pipeline waste heat power generation connection device according to claim 1, characterized in that: The flue gas duct body (1) is provided with a through groove, and the flue gas duct body (1) is provided with mounting holes (16) on both sides; the filter element (2) includes a filter screen (201) passing through the through groove and located in the flue gas duct body (1), and a connecting rod (202) set on the filter screen (201); a fixing rod (203) is slidably provided on the connecting rod (202); a spring is provided between the fixing rod (203) and the connecting rod (202), and the fixing rod (203) is movably inserted into the mounting hole (16).

3. The high-temperature flue gas pipeline waste heat power generation connection device according to claim 2, characterized in that: The locking part (4) includes a locking groove surrounding the outer wall of the exhaust pipe (3); the width of the locking groove decreases from the outer wall of the exhaust pipe (3) toward the center of the exhaust pipe (3).

4. The high-temperature flue gas pipeline waste heat power generation connection device according to claim 3, characterized in that: The limiting member (10) includes a limiting ring (1001) disposed on the smoke guide pipe (7); the limiting ring (1001) is provided with a sealing member (1002); the locking member (11) includes multiple sets of locking blocks (1101) slidably disposed on the smoke guide pipe (7); the locking blocks (1101) are inserted into the locking groove under the push of the pusher (14) to connect the smoke guide pipe (7) with the exhaust pipe (3).

5. A high-temperature flue gas pipeline waste heat power generation connection device according to claim 4, characterized in that: The support member (12) includes a support plate (1201) disposed on the flue gas duct body (1) and a threaded sleeve (1202) disposed on the support plate (1201); the pusher (14) includes a threaded rod (1401) disposed in the threaded sleeve (1202); the snap-fit ​​part (13) includes a connecting plate (1301) movably disposed on the support plate (1201) and a return spring (1302) disposed between the connecting plate (1301) and the support plate (1201); the connecting plate (1301) is provided with a stabilizing cover (1303).

6. The high-temperature flue gas pipeline waste heat power generation connection device according to claim 5, characterized in that: The positioning component (15) includes a snap-fit ​​rod (1501) disposed in the stabilizing cover (1303), an insertion hole (1502) disposed on the smoke guide pipe (7), and a positioning hole (1503) disposed on the exhaust pipe (3); the axes of the snap-fit ​​rod (1501), the insertion hole (1502), and the positioning hole (1503) coincide.

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