Flue gas waste heat conversion and utilization device for thermal power generating unit

Abstract

The invention provides a flue gas waste heat conversion and utilization device for a thermal power generating unit, belongs to the technical field of flue gas conversion, and solves the technical problem that the surface of a pipeline cannot be fully cleaned due to the fact that the pipeline in a heat exchanger is relatively complicated to arrange. A flue gas waste heat conversion and utilization device utilizing a thermal power generating unit comprises a shell, a butt joint frame is slidably connected to the bottom of the shell, two adjusting rollers are rotatably connected to the top of the butt joint frame, lifting mechanisms used for lifting the butt joint frame are arranged on the surfaces of the two adjusting rollers, a plurality of third mounting grooves are formed in one side of the butt joint frame, and a plurality of second mounting grooves are formed in the other side of the butt joint frame. The two second storage grooves are both arranged in a square shape, two first mounting grooves are symmetrically formed in the surfaces of the sides, close to the flow guide pipe, of the two clamping frames correspondingly, and connecting mechanisms used for being connected with the flow guide pipe are arranged in the two first mounting grooves correspondingly. Through the arrangement of the butt joint frame, the flow guide pipe can be separated from the shell, so that it is ensured that the flow guide pipe and the shell can be fully cleaned.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas conversion, and relates to the conversion of flue gas waste heat of a thermal power unit, in particular to a device for converting and utilizing the flue gas waste heat of a thermal power unit. Background Art

[0002] The flue gas waste heat conversion and utilization device of thermal power units is an important part of modern energy utilization technology. Its main function is to effectively recover and convert the flue gas waste heat generated by the thermal power units during the power generation process, thereby improving the overall thermal efficiency and reducing energy waste. In the process of thermal power generation, the heat energy released by the combustion of fuel is used to generate steam to drive the steam turbine to generate electricity. However, the temperature of the flue gas after combustion can be as high as hundreds of degrees. If it is not utilized, this part of the heat energy will be directly discharged into the environment, causing huge energy losses. The flue gas waste heat conversion and utilization device recovers this waste heat through a series of heat exchangers, condensers, heat pumps and other equipment, which is usually used for preheating boiler feed water or heating. The application of this device not only improves the overall energy efficiency of thermal power units and reduces dependence on fossil fuels, but also reduces greenhouse gas emissions to a certain extent, which helps to achieve the goal of sustainable development.

[0003] When some existing heat exchangers are in use, when hot air comes into contact with the cold water pipe, the water vapor in the hot air will condense into water droplets due to the decrease in temperature. These water droplets may carry away dust, particles and other impurities in the air, thereby forming dirt on the surface of the pipe. However, the pipes in the heat exchanger are relatively complicated to set up, which makes it impossible to fully clean the surface of the pipe. Therefore, this problem needs to be solved. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a device for converting and utilizing the waste heat of flue gas from a thermal power plant. The technical problem to be solved by the invention is that the pipes in the heat exchanger are relatively complicated in arrangement, which makes it impossible to fully clean the surface of the pipes.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A device for converting and utilizing waste heat from flue gas of a thermal power plant comprises a shell, wherein a docking frame is slidably connected to the bottom of the shell, and two adjusting rollers are rotatably connected to the top of the docking frame, and the surfaces of the two adjusting rollers are provided with a lifting mechanism for lifting the docking frame, and a plurality of third mounting grooves are provided on one side of the docking frame, and the plurality of third mounting grooves are arranged in groups of two, and an outer frame is slidably connected to the inside of each group of the third mounting grooves, and a restraining mechanism for restraining the outer frame is provided at both ends of each group of the third mounting grooves, and two clamping frames are symmetrically slidably connected to the inside of each group of the outer frames, and a symmetrical clamping mechanism is provided between the two clamping frames. A guide tube, each group of the outer frames is symmetrically provided with two third receiving grooves on the surface of one side close to the clamping frame, each group of the outer frames is provided with a second receiving groove on the surface of the side away from the two third receiving grooves, and the two third receiving grooves and the two second receiving grooves are both square-shaped, and the second airbags and the first airbags are respectively arranged inside the two second receiving grooves and the third receiving grooves, and an expansion mechanism for inflating the airbags is provided on the top of each group of the outer frames, and two first mounting grooves are symmetrically provided on the surface of one side close to the guide tube, and the two first mounting grooves are provided with a connecting mechanism for connecting the guide tube.

[0006] The working principle of the present invention is as follows: a docking frame and a base are respectively provided on the surface of the adjusting roller, so that when the adjusting roller rotates, the docking frame can be moved downward, thereby allowing the docking frame to be separated from the shell. During the movement of the docking frame, the base will also move synchronously. Because the base is initially placed on the ground, when the base moves, the shell can be propped up to ensure that the docking frame can move downward normally. Air bags are installed at both ends of the outer frame. Through the expansion of the air bags, the outer frame can be in close contact with the docking frame and the clamping frame to avoid leakage during use.

[0007] The elevator includes four slide slots, which are all opened on one side of the shell. The adjusting roller is rotatably connected to two of the slide slots, and the other two slide slots are fixedly connected to constraint rods. The docking frame is sleeved on the constraint rods and the surfaces of the adjusting rollers. The surface of the adjusting roller close to the docking frame is provided with a first threaded groove, and the first threaded groove and the docking frame are arranged in cooperation with each other. A second synchronous wheel is sleeved on the top of the adjusting roller, a motor is fixedly connected to the top of the shell, and a first synchronous wheel is fixedly connected to the output shaft of the motor. The surfaces of the first synchronous wheel and the second synchronous wheel are sleeved with the same synchronous belt, and an adjustment mechanism for adjusting the shell is provided at the bottom of the shell.

[0008] The above structure can ensure that the docking frame can be separated from the shell, thereby ensuring that both the guide tube and the shell can be fully cleaned.

[0009] The adjustment mechanism includes four first receiving grooves, and the four first receiving grooves are all opened at the bottom of the shell. The four first receiving grooves are slidably connected to the same base, and the base is slidably sleeved on the surface of the constraint rod and the adjustment roller. The surface of the adjustment roller close to the base is provided with a second threaded groove, and the second threaded groove and the base are arranged in cooperation with each other.

[0010] With the above structure, the shell can be moved upwards when the docking frame moves downwards, thereby ensuring that the downward-moving guide tube can be cleaned more easily.

[0011] The restraining mechanism includes two L-plates, both of which are fixedly connected to one side of the docking frame, both of which are slidably connected to a baffle bar on one side, and the baffle bar cooperates with the outer frame and the clamping frame, the tops of the two baffle bars are fixedly connected to the same top plate, the top plate cooperates with the shell, the bottom of the top plate is fixedly connected to a limiting rod, and the limiting rod is slidably connected to the top of the docking frame, and a first spring is sleeved on the surface of the limiting rod close to the top plate, the top end of the first spring is fixedly connected to the bottom of the top plate, and the bottom end of the first spring is fixedly connected to the top of the docking frame.

[0012] By adopting the above structure, the outer frame and the clamping frame can be constrained to avoid the outer frame and the clamping frame from moving during normal use. The expansion mechanism includes a piston warehouse, which is opened at the top of the outer frame, and the piston warehouse is interconnected with the first airbag and the second airbag. A piston plate is slidably connected to the inside of the piston warehouse, and two connecting columns are fixedly connected to the top of the piston plate, and the two connecting columns are slidably connected to the top of the outer frame. The tops of the two connecting columns are fixedly connected to the same first extrusion plate, and the surface of the first extrusion plate is matched with a pressing plate, and the pressing plate is fixedly connected to the inside of the shell. Two connecting rods are fixedly connected to the inside of the piston warehouse, and the piston plate is sleeved on the surfaces of the two connecting rods. The surfaces of the two connecting rods are sleeved with tension springs, and the bottom ends of the two tension springs are fixedly connected to the top of the piston plate, and the top ends of the two tension springs are fixed to the inside of the piston warehouse.

[0013] By adopting the above structure, the airbag can be expanded, so that the outer frame can be in close contact with the docking frame and the clamping frame.

[0014] The connecting mechanism includes a sealing plate, which is slidably connected to the inside of the first mounting groove, and the sealing plate and the guide tube are arranged in cooperation with each other. A second mounting groove is opened on the surface of the clamp frame away from the first mounting groove. A plurality of support rods are slidably connected to the inside of the second mounting groove, and one end of the plurality of support rods is fixedly connected to one side of the sealing plate, and the other ends of the plurality of support rods are fixedly connected to the same second extrusion plate, and a second spring is sleeved on the surface of a side of the plurality of support rods close to the second extrusion plate, one end of the plurality of second springs is fixedly connected to one side of the inside of the second mounting groove, and the other ends of the plurality of second springs are fixedly connected to one side of the second extrusion plate, the first airbag is slidably connected to the inside of the second mounting groove, and the first airbag and the second extrusion plate are arranged in cooperation with each other.

[0015] With the above structure, the sealing plate can be in close contact with the flow guide pipe.

[0016] Compared with the prior art, the device for converting and utilizing waste heat from flue gas of a thermal power plant of the present invention has the following advantages: 1. The present invention can separate the guide tube from the shell by setting a docking frame, so as to ensure that the guide tube and the shell can be fully cleaned. The surface of the adjusting roller is respectively matched with a docking frame and a base. The adjusting roller is provided with a first thread groove on the side close to the docking frame, and the first thread groove is matched with the docking frame. Therefore, when the adjusting roller drives the first thread groove to rotate, the docking frame can be moved downward, so that the docking frame can be separated from the shell.

[0017] 2. The present invention can move the shell upwards when the docking frame moves downwards by setting the base, so as to ensure that the downward-moving guide tube can be cleaned more easily. The adjusting roller is provided with a second thread groove on the side close to the base, and the second thread groove cooperates with the base, so that when the adjusting roller drives the second thread groove to rotate, the base will also move synchronously. Because the base is initially placed on the ground, the shell can be propped up when the base moves to ensure that the docking frame can move downwards normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a device for converting and utilizing waste heat from flue gas of a thermal power plant according to the present invention; Figure 2 It is a schematic diagram of the internal structure of a device for converting and utilizing waste heat from flue gas of a thermal power plant in the present invention; Figure 3 yes Figure 2 A is an enlarged structural diagram; Figure 4 It is a schematic diagram of the bottom structure of a device for converting and utilizing waste heat from flue gas of a thermal power plant in the present invention; Figure 5It is a schematic diagram of a restraint mechanism of a device for converting and utilizing waste heat from flue gas of a thermal power plant in the present invention; Figure 6 yes Figure 5 The enlarged structural diagram at B in FIG. Figure 7 It is a schematic diagram of an expansion mechanism of a device for converting and utilizing waste heat from flue gas of a thermal power plant in the present invention; Figure 8 It is a schematic diagram of a connection mechanism of a device for converting and utilizing waste heat from flue gas of a thermal power plant in the present invention; Fig. 9 Figure 8 The enlarged structural diagram at C in the figure.

[0019] In the figure: 1, housing; 2, docking frame; 3, motor; 4, outer frame; 5, clamping frame; 101, slide groove; 102, first storage groove; 103, pressing plate; 201, third installation groove; 202, stop bar; 203, L plate; 204, top plate; 205, limit rod; 206, first spring; 301, first synchronous wheel; 302, synchronous belt; 303, second synchronous wheel; 304, adjusting roller; 305, first thread groove; 306, second thread groove ; 307, base; 308, restraint rod; 401, guide tube; 402, piston compartment; 403, second storage slot; 404, third storage slot; 405, piston plate; 406, first extrusion plate; 407, connecting rod; 408, tension spring; 409, first airbag; 410, second airbag; 501, first mounting slot; 502, second mounting slot; 503, sealing plate; 504, support rod; 505, second spring; 506, second extrusion plate. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1 - Fig. 9As shown, a device for converting and utilizing waste heat from flue gas of a thermal power unit comprises a shell 1, a docking frame 2 is slidably connected to the bottom of the shell 1, two adjusting rollers 304 are rotatably connected to the top of the docking frame 2, and the surfaces of the two adjusting rollers 304 are provided with a lifting mechanism for lifting the docking frame 2, a plurality of third mounting grooves 201 are provided on one side of the docking frame 2, and the plurality of third mounting grooves 201 are arranged in groups of two, an outer frame 4 is slidably connected inside each group of the third mounting grooves 201, and a restraining mechanism for restraining the outer frame 4 is provided at both ends of each group of the third mounting grooves 201, two clamping frames 5 are symmetrically slidably connected inside each group of the outer frames 4, and the same flow guide pipe 401 is arranged between the two clamping frames 5, Two third receiving grooves 404 are symmetrically provided on the surface of one side of each group of outer frames 4 close to the clamping frame 5, and a second receiving groove 403 is provided on the surface of one side of each group of outer frames 4 away from the two third receiving grooves 404, and the two third receiving grooves 404 and the two second receiving grooves 403 are both arranged in a square shape, and a second airbag 410 and a first airbag 409 are respectively arranged inside the two second receiving grooves 403 and the third receiving groove 404, and an expansion mechanism for inflating the airbag is provided on the top of each group of outer frames 4, and two first installation grooves 501 are symmetrically provided on the surface of one side of the two clamping frames 5 close to the guide tube 401, and a connecting mechanism for connecting the guide tube 401 is provided inside the two first installation grooves 501.

[0022] Preferably, the elevator includes four slide grooves 101, and the four slide grooves 101 are all opened on one side of the shell 1. The adjusting roller 304 is rotatably connected to the inside of two of the slide grooves 101, and the other two slide grooves 101 are fixedly connected to the inside of the constraint rods 308. The docking frame 2 is sleeved on the surface of the constraint rod 308 and the adjusting roller 304. The surface of the adjusting roller 304 close to the docking frame 2 is provided with a first thread groove 305, and the first thread groove 305 and the docking frame 2 are arranged in cooperation with each other. The top of the adjusting roller 304 is sleeved with a second synchronous wheel 303, the top of the shell 1 is fixedly connected to a motor 3, and the output shaft of the motor 3 is fixedly connected to a first synchronous wheel 301, the surfaces of the first synchronous wheel 301 and the second synchronous wheel 303 are sleeved with the same synchronous belt 302, and the bottom of the shell 1 is provided with an adjustment mechanism for adjusting the shell 1.

[0023] Furthermore, the adjustment mechanism includes four first receiving grooves 102, and the four first receiving grooves 102 are all opened at the bottom of the shell 1. The four first receiving grooves 102 are slidably connected to the same base 307, and the base 307 is slidably sleeved on the surface of the constraint rod 308 and the adjustment roller 304. A second threaded groove 306 is opened on the surface of the adjustment roller 304 close to the base 307, and the second threaded groove 306 and the base 307 are arranged in cooperation with each other.

[0024] Preferably, the restraining mechanism includes two L-plates 203, both of which are fixedly connected to one side of the docking frame 2, both of which are slidably connected to a baffle 202 on one side of the two L-plates 203, and the baffle 202 cooperates with the outer frame 4 and the clamping frame 5, and the tops of the two baffles 202 are fixedly connected to the same top plate 204, and the top plate 204 cooperates with the shell 1, and the bottom of the top plate 204 is fixedly connected to a limiting rod 205, and the limiting rod 205 is slidably connected to the top of the docking frame 2, and a first spring 206 is sleeved on the surface of the limiting rod 205 close to the top plate 204, and the top end of the first spring 206 is fixedly connected to the bottom of the top plate 204, and the bottom end of the first spring 206 is fixedly connected to the top of the docking frame 2.

[0025] Preferably, the expansion mechanism includes a piston chamber 402, which is opened at the top of the outer frame 4, and the piston chamber 402 is interconnected with the first airbag 409 and the second airbag 410, and a piston plate 405 is slidably connected inside the piston chamber 402, and two connecting columns are fixedly connected to the top of the piston plate 405, and the two connecting columns are slidably connected to the top of the outer frame 4, and the tops of the two connecting columns are fixedly connected to the same first extrusion plate 406, and the surface of the first extrusion plate 406 is matched with a pressing plate 103, and the pressing plate 103 is fixedly connected to the inside of the shell 1, and two connecting rods 407 are fixedly connected to the inside of the piston chamber 402, and the piston plate 405 is sleeved on the surfaces of the two connecting rods 407, and the surfaces of the two connecting rods 407 are sleeved with tension springs 408, and the bottom ends of the two tension springs 408 are fixedly connected to the top of the piston plate 405, and the top ends of the two tension springs 408 are fixed to the inside of the piston chamber 402.

[0026] Furthermore, the connecting mechanism includes a sealing plate 503, which is slidably connected to the inside of the first mounting groove 501, and the sealing plate 503 and the guide tube 401 are arranged in cooperation with each other. A second mounting groove 502 is opened on the surface of the clamp frame 5 away from the first mounting groove 501, and a plurality of support rods 504 are slidably connected to the inside of the second mounting groove 502, and one end of the plurality of support rods 504 are fixedly connected to one side of the sealing plate 503, and the other ends of the plurality of support rods 504 are fixedly connected to the same second extrusion plate 506, and a second spring 505 is sleeved on the surface of the side of the plurality of support rods 504 close to the second extrusion plate 506, one end of the plurality of second springs 505 are fixedly connected to one side of the inside of the second mounting groove 502, and the other ends of the plurality of second springs 505 are fixedly connected to one side of the second extrusion plate 506, the first airbag 409 is slidably connected to the inside of the second mounting groove 502, and the first airbag 409 and the second extrusion plate 506 are arranged in cooperation with each other.

[0027] The working principle of the present invention is as follows: when the guide tube 401 and the shell 1 need to be cleaned, the motor 3 is started first, and two synchronous belts 302 are installed on the output shaft of the motor 3, and the other ends of the two synchronous belts 302 are matched with the adjusting rollers 304, so that when the motor 3 is started, the two adjusting rollers 304 will rotate, and the surfaces of the two adjusting rollers 304 are respectively matched with the docking frame 2 and the base 307, and the adjusting roller 304 is provided with a first thread groove 305 on the side close to the docking frame 2, and the first thread groove 305 is matched with the docking frame 2, so that when the adjusting roller 304 drives the first thread groove 305 to rotate, the docking frame 2 can be moved downward, so that the docking frame 2 can be connected with the docking frame 2. The shell 1 is separated, and the adjusting roller 304 is provided with a second thread groove 306 on one side close to the base 307, and the second thread groove 306 cooperates with the base 307, so that when the adjusting roller 304 drives the second thread groove 306 to rotate, the base 307 will also move synchronously. Because the base 307 is initially placed on the ground, when the base 307 moves, the shell 1 can be propped up to ensure that the docking frame 2 can move down normally. A plurality of baffles 202 are installed on one side of the docking frame 2, and the plurality of baffles 202 are all cooperated with the outer frame 4 and the clamping frame 5 inside the docking frame 2 to avoid the outer frame 4 and the clamping frame 5 from moving during normal use. A first spring 206 is installed at the top of the bar 202. When the docking frame 2 is separated from the shell 1, the blocking bar 202 will also be reset under the action of the first spring 206, thereby releasing the constraints on the outer frame 4 and the clamping frame 5. A piston warehouse 402 is opened at the top of the outer frame 4, and a piston plate 405 is slidably connected inside the piston warehouse 402. Initially, the piston plate 405 slides on the bottom of the piston warehouse 402. Air bags are installed at both ends of the outer frame 4, and the air bags are connected with the piston warehouse 402. When the piston plate 405 slides to the bottom of the piston warehouse 402, the gas inside the piston warehouse 402 will be filled into the air bag, so that the air bag can be expanded. Through the expansion of the air bag, the outer frame 4 can It can be in close contact with the docking frame 2 and the clamping frame 5. A sealing plate 503 is installed inside the clamping frame 5. When one of the airbags is in contact with the clamping frame 5, it will also squeeze the sealing plate 503, so that the sealing plate 503 can be in close contact with the guide tube 401. All of this is achieved after the piston plate 405 moves down. Because the piston plate 405 is connected to the shell 1 through the first squeezing plate 406, when the docking frame 2 is separated from the shell 1, the piston plate 405 will also be reset, so that the airbag and the sealing plate 503 are restored to their original state. After the airbag and the sealing plate 503 are restored, the guide tube 401 can be removed from the docking frame 2 depending on whether it is necessary to remove the guide tube 401 according to the on-site situation.

[0028] In summary, in the present invention, the core beneficial effect is that the guide tube and the shell can be separated by setting the docking frame, so as to ensure that the guide tube and the shell can be fully cleaned, and the surface of the adjusting roller is respectively matched with the docking frame and the base, and the adjusting roller is provided with a first thread groove on the side close to the docking frame, and the first thread groove is matched with the docking frame, so that when the adjusting roller drives the first thread groove to rotate, the docking frame can be moved downward, so that the docking frame can be separated from the shell.

[0029] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A device for converting and utilizing waste heat from flue gas of a thermal power plant, comprising a housing (1), characterized in that: The bottom of the shell (1) is slidably connected to a docking frame (2), the top of the docking frame (2) is rotatably connected to two adjustment rollers (304), and the surfaces of the two adjustment rollers (304) are provided with a lifting mechanism for lifting the docking frame (2), a plurality of third mounting grooves (201) are opened on one side of the docking frame (2), and the plurality of third mounting grooves (201) are arranged in groups of two, each group of the third mounting grooves (201) is slidably connected to an outer frame (4), both ends of each group of the third mounting grooves (201) are provided with a restraining mechanism for restraining the outer frame (4), each group of the outer frame (4) is symmetrically slidably connected to two clamping frames (5), the same guide pipe (401) is arranged between the two clamping frames (5), and each group of the outer frames (4) is close to the clamping frame ( 5) Two third receiving grooves (404) are symmetrically provided on one side surface, a second receiving groove (403) is provided on the side surface of each group of the outer frames (4) away from the two third receiving grooves (404), and the two third receiving grooves (404) and the two second receiving grooves (403) are both arranged in a square shape, a second airbag (410) and a first airbag (409) are arranged inside the two second receiving grooves (403) and the third receiving groove (404), respectively, an expansion mechanism for expanding the airbag is provided on the top of each group of the outer frames (4), two first mounting grooves (501) are symmetrically provided on the side surface of the two clamping frames (5) close to the guide tube (401), and a connecting mechanism for connecting the guide tube (401) is provided inside the two first mounting grooves (501).

2. The device for converting and utilizing waste heat from flue gas of a thermal power plant according to claim 1 is characterized in that: The lift comprises four slide grooves (101), the four slide grooves (101) are all opened on one side of the shell (1), the adjusting roller (304) is rotatably connected to the inside of two of the slide grooves (101), and the inside of the other two slide grooves (101) are fixedly connected with a constraint rod (308), the docking frame (2) is sleeved on the constraint rod (308) and the surface of the adjusting roller (304), the surface of the adjusting roller (304) close to the docking frame (2) is provided with a first thread groove (305), and the first thread groove (305) and the docking frame (2) are arranged in cooperation with each other, the top of the adjusting roller (304) is sleeved with a second synchronous wheel (303), the top of the shell (1) is fixedly connected with a motor (3), the output shaft of the motor (3) is fixedly connected with a first synchronous wheel (301), the surfaces of the first synchronous wheel (301) and the second synchronous wheel (303) are sleeved with the same synchronous belt (302), and the bottom of the shell (1) is provided with an adjustment mechanism for adjusting the shell (1).

3. The device for converting and utilizing waste heat from flue gas of a thermal power plant according to claim 2 is characterized in that: The adjustment mechanism comprises four first receiving grooves (102), the four first receiving grooves (102) are all provided at the bottom of the shell (1), the four first receiving grooves (102) are slidably connected to the same base (307), and the base (307) is slidably sleeved on the surface of the constraint rod (308) and the adjustment roller (304), and a second thread groove (306) is provided on the surface of the adjustment roller (304) on a side close to the base (307), and the second thread groove (306) and the base (307) are arranged in cooperation with each other.

4. The device for converting and utilizing waste heat from flue gas of a thermal power plant according to claim 1 is characterized in that: The restraining mechanism comprises two L-plates (203), the two L-plates (203) are fixedly connected to one side of the docking frame (2), the two L-plates (203) are slidably connected to one side of the two L-plates (203), and the baffles (202) are arranged in cooperation with the outer frame (4) and the clamping frame (5), the tops of the two baffles (202) are fixedly connected to the same top plate (204), the top plate (204) is arranged in cooperation with the shell (1), the bottom of the top plate (204) is fixedly connected to a limiting rod (205), and the limiting rod (205) is slidably connected to the top of the docking frame (2), and a first spring (206) is sleeved on the surface of the limiting rod (205) on one side close to the top plate (204), the top end of the first spring (206) is fixedly connected to the bottom of the top plate (204), and the bottom end of the first spring (206) is fixedly connected to the top of the docking frame (2).

5. The device for converting and utilizing waste heat from flue gas of a thermal power plant according to claim 1 is characterized in that: The expansion mechanism comprises a piston chamber (402), the piston chamber (402) being opened at the top of the outer frame (4), and the piston chamber (402) and the first airbag (409) and the second airbag (410) being interpenetratingly arranged, a piston plate (405) being slidably connected inside the piston chamber (402), two connecting columns being fixedly connected to the top of the piston plate (405), and both connecting columns being slidably connected to the top of the outer frame (4), and the tops of the two connecting columns being fixedly connected to the same first extrusion plate (406), and the first extrusion plate ( The surface of the piston chamber (406) is equipped with a pressing plate (103), the pressing plate (103) is fixedly connected to the inside of the housing (1), the inside of the piston chamber (402) is fixedly connected to two connecting rods (407), the piston plate (405) is sleeved on the surfaces of the two connecting rods (407), the surfaces of the two connecting rods (407) are sleeved with tension springs (408), the bottom ends of the two tension springs (408) are fixedly connected to the top of the piston plate (405), and the top ends of the two tension springs (408) are fixed to the inside of the piston chamber (402).

6. The device for converting and utilizing waste heat from flue gas of a thermal power plant according to claim 1 is characterized in that: The connection mechanism comprises a sealing plate (503), the sealing plate (503) being slidably connected to the inside of the first mounting groove (501), and the sealing plate (503) and the guide tube (401) being arranged in cooperation with each other, a second mounting groove (502) being provided on a surface of the clamping frame (5) away from the first mounting groove (501), a plurality of support rods (504) being slidably connected to the inside of the second mounting groove (502), one end of each of the plurality of support rods (504) being fixedly connected to one side of the sealing plate (503), and the other ends of the plurality of support rods (504) being fixedly connected to the same second extrusion plate (506).

7. The device for converting and utilizing waste heat from flue gas of a thermal power plant according to claim 6 is characterized in that: A second spring (505) is sleeved on the surface of one side of the plurality of support rods (504) close to the second extrusion plate (506); one end of the plurality of second springs (505) is fixedly connected to one side of the inside of the second mounting groove (502); the other end of the plurality of second springs (505) is fixedly connected to one side of the second extrusion plate (506); the first airbag (409) is slidably connected to the inside of the second mounting groove (502); and the first airbag (409) and the second extrusion plate (506) are arranged in cooperation with each other.

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