Waste heat utilization device for thermal power generation

Abstract

The utility model discloses a waste heat utilization device for thermal power generation, particularly relates to the technical field of heat recovery, and comprises a recovery device main body, a special-shaped heat storage brick is arranged on the end face of the inner side of the recovery device main body, a ventilation pipe is arranged in the middle of the special-shaped heat storage brick, and a supporting convex block is arranged on one side of the outer end face of the ventilation pipe. A sealing groove is formed in the outer end face of the ventilation pipe and located on the lower side of the supporting protruding block, and a mounting rotating plate is arranged on the end face of the ventilation pipe and located on the lower side of the supporting protruding block. During actual use, heat generated in the air of the thermal power plant can be continuously recycled under the corresponding arrangement state of the water inlet pipe, the water outlet pipe, the ventilation pipe, the special-shaped heat storage bricks and the heat absorption water pipe, and meanwhile, the heat storage bricks can utilize and store redundant heat; therefore, when the thermal power plant is in a non-working state, heat stored in the thermal power plant can be used for continuously heating the heat absorption water pipe, and the preheating utilization effect and efficiency of the thermal power plant are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery, and more specifically, to a waste heat utilization device for thermal power generation. Background Art

[0002] The basic production process of thermal power generation is: when the fuel is burned, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. Then the turbine drives the generator to rotate, converting the mechanical energy into electrical energy. In the process of using the thermal power generation unit, the flue gas discharged by the thermal power generation unit contains a certain amount of heat. At present, the heat in the flue gas is exchanged by a heat exchange device and reused. The energy-saving thermal power generation waste heat utilization device described in the publication number (CN217785893U) Water is transported to each heat exchange coil through the water inlet pipe, and the flue gas enters the interior of the heat exchange bin through the side connecting bin on the left. After passing through the interior of the heat exchange bin, the flue gas will come into contact with the heat exchange coil and exchange heat with the cold water inside the heat exchange coil. The heated water is discharged through the water outlet pipe for reuse. When the flue gas passes through the interior of the heat exchange bin, the interior of the heat exchange bin is provided with upper and lower partitions that are staggered up and down, and the upper and lower partitions are correspondingly distributed between the intervals at the ends of the vertical pipes of the heat exchange coil, which will play a barrier role for the flue gas and extend the residence time of the flue gas inside the heat exchange bin.

[0003] When the above device is in use, it can prolong the residence time of flue gas inside the heat exchange bin and effectively increase the efficiency of heat recovery. The screw rod will drive the lifting plate to scrape and clean the impurities adhering to the outer wall of the vertical tube part of the heat exchange coil to ensure the heat exchange effect of the heat exchange coil after long-term use. However, when the above device is in use, the internal structure is relatively complicated, and dust affects the work of the screw rod, so that the dust cannot be cleaned, which affects the heat exchange efficiency of the heat exchange tube and reduces the heat exchange efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a waste heat utilization device for thermal power generation. The technical problem to be solved by the utility model is: how to prevent dust from entering the recovery device and affecting the heat exchange efficiency of the heat exchange tubes and make adjustments.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste heat utilization device for thermal power generation, comprising a recovery device body, the inner end surface of which is provided with a special-shaped heat storage brick, the middle part of the special-shaped heat storage brick is provided with a ventilation pipe, one side of the outer end surface of the ventilation pipe is provided with a supporting protrusion, the outer end surface of the ventilation pipe is provided with a sealing groove on the lower side of the supporting protrusion, the ventilation pipe is provided with a mounting rotating plate on the lower end surface of the supporting protrusion, the mounting rotating plate and the inner end surface of the supporting protrusion are provided with a limited mounting groove, and the inner side of the limited mounting groove is provided with a supporting clamp ring;

[0006] A dust filter is provided on one side of the inner end surface of the support clamping ring, a connecting rotating rod is provided on one side of the connection between the mounting rotating plate and the outer end surface of the supporting protrusion, a locking support is provided on the side of the mounting rotating plate away from the connecting rotating rod, and a U-shaped clamp is provided on the side of the supporting protrusion away from the connecting rotating rod, a rotating threaded rod is provided in the middle of the locking support, and a rotating locking piece is provided on the outer end surface of the rotating threaded rod.

[0007] In a preferred embodiment, a support frame is provided on the lower end surface of the recovery device body, and the ventilation pipe is sequentially penetrated from the special-shaped heat storage brick and the end surface of the recovery device body, and extends to both ends of the recovery device body;

[0008] The ventilation pipe is provided with a mounting flange on the outer side of the outer end surface of the recovery device body, a circular mounting hole is opened on the end surface of the mounting flange, and a hot water absorption pipe is provided on the inner end surface of the ventilation pipe.

[0009] In a preferred embodiment, one end of the heat absorbing pipe passes through the ventilation pipe, the special-shaped heat storage brick and the end surface of the recovery device body, and extends to the outside of the recovery device body;

[0010] One end of the heat absorption pipe is provided with a water outlet pipe outside the recovery device body, and the heat absorption pipe passes through the ventilation pipe, the special-shaped heat storage brick and the end face of the recovery device body at the end away from the water outlet pipe, and extends to the outside of the recovery device body.

[0011] In a preferred embodiment, the hot water absorption pipe is provided with a water inlet pipe at the outside of the recovery device body at one end away from the water outlet pipe, the water outlet pipe is connected to an external heating pipe, and the water inlet pipe is connected to an external water inlet device;

[0012] The special-shaped heat storage brick is arranged in a square state when viewed from the right, the outer end surface of the special-shaped heat storage brick is matched with the inner end surface of the recovery device body, and the inner end surface of the special-shaped heat storage brick is matched with the outer end surface of the ventilation pipe.

[0013] In a preferred embodiment, the number of the mounting flanges is two, and they are arranged in a mirror image state on both sides of the vertical central axis in the top view direction of the ventilation pipe, and the number of the circular mounting holes is multiple, and they are arranged in a ring array state outside the center point of the mounting flange in the right view direction;

[0014] The heat-absorbing water pipe is arranged in a spiral state inside the ventilation pipe, and the inner end surface of the ventilation pipe in the right-viewing direction is aligned with the outer end surface of the heat-absorbing water pipe in the right-viewing direction.

[0015] In a preferred embodiment, the installation rotating plate and the supporting protrusion have the same specifications, and the inner end surface of the position-limiting installation groove is matched with the outer end surface of the supporting clamp ring;

[0016] The locking support has the same specifications as the U-shaped clamp, the outer end surface of the rotating threaded rod matches the inner end surface of the U-shaped clamp, and the inner end surface of the sealing groove matches the outer end surface of the mounting rotating plate.

[0017] Technical effects and advantages of the utility model:

[0018] When the utility model is actually used, the heat generated in the air of the thermal power plant can be continuously recycled and utilized by correspondingly setting the water inlet pipe, the water outlet pipe, the ventilation pipe, the special-shaped heat storage bricks and the heat absorbing water pipe. At the same time, the heat storage bricks can utilize and store the excess heat, so that when the thermal power plant is in a non-working state, the heat stored in itself can be utilized to continuously heat the heat absorbing water pipe, thereby increasing the effect and efficiency of the preheating utilization of the thermal power plant. At the same time, when the rotating plate, the supporting clamp ring, the U-shaped clamp, the locking support, the rotating threaded rod, the rotating locking member and the dustproof filter are installed in the corresponding setting state, the small particles of dust that are not effectively separated in the hot air can be effectively filtered, and it is convenient to clean and install them, thereby ensuring the efficiency of heat recovery inside the ventilation pipe and avoiding dust adsorbing on the outer end surface of the heat absorbing water pipe to reduce the efficiency of heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the overall rear structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the overall right side cross-sectional structure of the utility model.

[0022] Figure 4 This is a schematic diagram of the installation structure of the dust filter of the utility model.

[0023] The accompanying drawings are marked as follows: 1 recovery device body, 2 support frame, 3 ventilation pipe, 4 mounting flange, 5 circular mounting hole, 6 water inlet pipe, 7 water outlet pipe, 8 special-shaped heat storage bricks, 9 hot water absorption pipe, 10 sealing groove, 11 support protrusion, 12 U-shaped clamp, 13 locking support, 14 rotating threaded rod, 15 rotating locking member, 16 dust filter, 17 installation rotating plate, 18 supporting clamp ring, 19 connecting rotating rod, 20 limiting mounting groove. DETAILED DESCRIPTION

[0024] The utility model provides a waste heat utilization device for thermal power generation, such as Figure 1 , 2 As shown in and 3, it includes a recovery device body 1, whose inner end face is provided with a special-shaped heat storage brick 8, a ventilation pipe 3 is provided in the middle of the special-shaped heat storage brick 8, and a support frame 2 is provided on the lower end face of the recovery device body 1. The ventilation pipe 3 is sequentially penetrated from the special-shaped heat storage brick 8 and the end face of the recovery device body 1, and extends to both ends of the recovery device body 1. The ventilation pipe 3 is provided with a mounting flange 4 on the outer side of the outer end face of the recovery device body 1, and a circular mounting hole 5 is opened on the end face of the mounting flange 4. The inner end face of the ventilation pipe 3 is provided with a hot water absorption pipe 9, one end of the hot water absorption pipe 9 passes through the ventilation pipe 3, the special-shaped heat storage brick 8 and the end face of the recovery device body 1, and extends to the outside of the recovery device body 1. One end of the hot water absorption pipe 9 is provided with a water outlet pipe 7 on the outside of the recovery device body 1, and the hot water absorption pipe 9 passes through the ventilation pipe 3, the special-shaped heat storage brick 8 and the end face of the recovery device body 1 at the end away from the water outlet pipe 7. , and extends to the outside of the recovery device body 1, the hot water absorption pipe 9 is set with a water inlet pipe 6 on the outside of the recovery device body 1 at one end away from the water outlet pipe 7, the water outlet pipe 7 is connected to the external heating pipe, and the water inlet pipe 6 is connected to the external water inlet equipment, the special-shaped heat storage brick 8 is arranged in a square state in the right viewing direction, the outer end face of the special-shaped heat storage brick 8 is adapted to the inner end face of the recovery device body 1, and the inner end face of the special-shaped heat storage brick 8 is adapted to the outer end face of the ventilation pipe 3, the number of the mounting flanges 4 is provided with two, and they are arranged in a mirror state on both sides of the vertical central axis of the ventilation pipe 3 in the top view direction, the number of the circular mounting holes 5 is provided with multiple, and they are arranged in a ring array state outside the center point of the mounting flange 4 in the right viewing direction, the hot water absorption pipe 9 is arranged in a spiral state inside the ventilation pipe 3, and the inner end face of the ventilation pipe 3 in the right viewing direction is the outer end face of the hot water absorption pipe 9 in the right viewing direction.

[0025] like Figure 4As shown, a support protrusion 11 is provided on one side of the outer end surface of the ventilation pipe 3, a sealing groove 10 is provided on the lower side of the support protrusion 11 on the outer end surface of the ventilation pipe 3, a mounting rotating plate 17 is provided on the lower side end surface of the support protrusion 11 of the ventilation pipe 3, a limited mounting groove 20 is provided between the mounting rotating plate 17 and the inner end surface of the support protrusion 11, a support clamping ring 18 is provided inside the limited mounting groove 20, a dust filter 16 is provided on one side of the inner end surface of the support clamping ring 18, a connecting rotating rod 19 is provided on one side of the connection between the mounting rotating plate 17 and the outer end surface of the support protrusion 11, and the mounting rotating plate 17 is on the side away from the connecting rotating rod 19 A locking support 13 is provided, and the support protrusion 11 is provided with a U-shaped clamp 12 on the side away from the connecting rotating rod 19, a rotating threaded rod 14 is provided in the middle of the locking support 13, and a rotating locking member 15 is provided on the outer end face of the rotating threaded rod 14. The mounting rotating plate 17 has the same specifications as the support protrusion 11, the inner end face of the limiting mounting groove 20 is matched with the outer end face of the supporting clamp 18, the locking support 13 has the same specifications as the U-shaped clamp 12, the outer end face of the rotating threaded rod 14 is matched with the inner end face of the U-shaped clamp 12, and the inner end face of the sealing groove 10 is matched with the outer end face of the mounting rotating plate 17.

[0026] Working principle of this utility model:

[0027] When the utility model is in use, the staff moves the recovery device body 1 to a suitable position, and then connects the mounting flange 4 to the exhaust pipe of the power plant through a nut. Then, the hot air generated when the thermal power plant is working enters the interior of the centrifugal dust collector, and then some large particles of dust are separated from the hot air, and the hot air will enter the interior of the ventilation pipe 3. Then, in the process of hot air circulation, the special-shaped heat storage bricks 8 and the heat absorption pipe 9 will be continuously heated. At the same time, when the hot air enters the interior of the ventilation pipe 3, the dust filter 16 will filter the small particles of dust that have not been separated in the hot air. After the thermal power plant has worked for a certain period of time, it is necessary to regularly clean the dust at one end of the dust filter 16. The staff rotates the rotating locking piece 15 to separate the mounting rotating plate 17 from the supporting protrusion 11, thereby removing the supporting clamping ring 18, and then the filtered small particles of dust can be cleaned, and then the supporting clamping ring 18 can be inserted into the interior of the limiting mounting groove 20, and the mounting rotating plate 17 can be re-inserted into the interior of the sealing groove 10, and it can be locked and fixed.

[0028] Finally, a few points should be explained: the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: 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 in the protection scope of the present utility model.

Claims

1. A waste heat utilization device for thermal power generation, characterized in that: include: A recovery device body (1) is provided with a special-shaped heat storage brick (8) on its inner end surface, a ventilation pipe (3) is provided in the middle of the special-shaped heat storage brick (8), a support protrusion (11) is provided on one side of the outer end surface of the ventilation pipe (3), a sealing groove (10) is provided on the outer end surface of the ventilation pipe (3) at the lower side of the support protrusion (11), a mounting rotating plate (17) is provided on the lower end surface of the support protrusion (11) of the ventilation pipe (3), a limited position mounting groove (20) is provided between the mounting rotating plate (17) and the inner end surface of the support protrusion (11), and a support clamping ring (18) is provided inside the limited position mounting groove (20); A dust filter (16) is provided on one side of the inner end surface of the support clamp ring (18); a connecting rod (19) is provided on one side of the connection between the mounting rotating plate (17) and the outer end surface of the support protrusion (11); a locking support member (13) is provided on the side of the mounting rotating plate (17) away from the connecting rod (19); a U-shaped clamp (12) is provided on the side of the support protrusion (11) away from the connecting rod (19); a rotating threaded rod (14) is provided in the middle of the locking support member (13); and a rotating locking member (15) is provided on the outer end surface of the rotating threaded rod (14).

2. A waste heat utilization device for thermal power generation according to claim 1, characterized in that: A support frame (2) is provided on the lower end surface of the recovery device body (1), and the ventilation pipe (3) is sequentially penetrated from the special-shaped heat storage brick (8) and the end surface of the recovery device body (1), and extends to both ends of the recovery device body (1); The ventilation pipe (3) is provided with a mounting flange (4) on the outside of the outer end surface of the recovery device body (1), the end surface of the mounting flange (4) is provided with a circular mounting hole (5), and the inner end surface of the ventilation pipe (3) is provided with a hot water absorption pipe (9).

3. A waste heat utilization device for thermal power generation according to claim 2, characterized in that: One end of the hot water absorption pipe (9) passes through the ventilation pipe (3), the special-shaped heat storage brick (8) and the end surface of the recovery device body (1), and extends to the outside of the recovery device body (1); One end of the heat absorption pipe (9) is provided with a water outlet pipe (7) on the outside of the recovery device body (1); the heat absorption pipe (9) passes through the ventilation pipe (3), the special-shaped heat storage brick (8) and the end surface of the recovery device body (1) at the end away from the water outlet pipe (7), and extends to the outside of the recovery device body (1).

4. A waste heat utilization device for thermal power generation according to claim 3, characterized in that: The end of the hot water absorption pipe (9) away from the water outlet pipe (7) is provided with a water inlet pipe (6) outside the recovery device body (1), the water outlet pipe (7) is connected to an external heating pipeline, and the water inlet pipe (6) is connected to an external water inlet device; The special-shaped heat storage brick (8) is arranged in a square state when viewed from the right, the outer end surface of the special-shaped heat storage brick (8) is matched with the inner end surface of the recovery device body (1), and the inner end surface of the special-shaped heat storage brick (8) is matched with the outer end surface of the ventilation pipe (3).

5. The waste heat utilization device for thermal power generation according to claim 2, characterized in that: The number of the mounting flanges (4) is two, and they are arranged in a mirror image state on both sides of the vertical central axis of the ventilation pipe (3) in the top-view direction; the number of the circular mounting holes (5) is multiple, and they are arranged in a ring array state outside the center point of the mounting flange (4) in the right-view direction; The hot water absorption pipe (9) is arranged in a spiral state inside the ventilation pipe (3), and the inner end surface of the ventilation pipe (3) in the right viewing direction is aligned with the outer end surface of the hot water absorption pipe (9) in the right viewing direction.

6. The waste heat utilization device for thermal power generation according to claim 1, characterized in that: The mounting rotating plate (17) and the supporting protrusion (11) have the same specifications, and the inner end surface of the position-limiting mounting groove (20) is matched with the outer end surface of the supporting clamping ring (18); The locking support (13) and the U-shaped clamp (12) have the same specifications, the outer end surface of the rotating threaded rod (14) is matched with the inner end surface of the U-shaped clamp (12), and the inner end surface of the sealing groove (10) is matched with the outer end surface of the mounting rotating plate (17).

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