Waste heat recovery equipment for combustion flue gas treatment of natural gas power generation

Abstract

The invention discloses waste heat recovery equipment for treating combustion flue gas for natural gas power generation, and relates to the technical field of flue gas waste heat recovery, the side face of a shell is fixedly connected with a flue gas inlet component, and the side, away from the flue gas inlet component, of the shell is fixedly connected with a flue gas outlet component. When combustion flue gas enters the shell through the flue gas inlet pipe, an external water pipe is connected with the water inlet, cold water continuously enters the heat exchange box through the water inlet, so that the cold water is fully contacted with the combustion flue gas to heat the cold water, and meanwhile, the heated cold water is discharged through the water outlet; when combustion smoke continuously makes contact with the heat exchange pipe, a large amount of condensate water is left on the side face of the heat exchange pipe in a hanging mode, when the combustion smoke continuously makes impact contact with the heat exchange box, the contact mechanism moves on the sliding rod, and therefore the contact mechanism scrapes off the condensate water left on the heat exchange pipe in a hanging mode.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas waste heat recovery, and in particular to a waste heat recovery device for treating combustion flue gas of natural gas power generation. Background Art

[0002] Waste heat recovery in the treatment of combustion flue gas for natural gas power generation is of great significance. The high-temperature flue gas generated by natural gas combustion contains a large amount of heat energy. If it is not recycled, this heat energy will be wasted. Through waste heat recovery, the heat energy in the flue gas can be converted into other forms of energy, such as steam, hot water or electricity, thereby improving the energy efficiency of the entire natural gas power generation system. Waste heat recovery for combustion flue gas treatment of natural gas power generation is an effective technical means to improve energy efficiency, reduce operating costs, and save energy and reduce emissions. By adopting appropriate waste heat recovery methods and equipment, the heat energy in the flue gas can be converted into other forms of energy to achieve efficient energy utilization and sustainable development.

[0003] In the waste heat recovery of combustion flue gas treatment in natural gas power generation, condensed water may be generated when the heating surface contacts the pipeline. The condensed water will remain on the contact surface of the pipeline for a long time. A large amount of condensed water will consume the heat in the combustion flue gas, which will cause heat loss to the heat exchange work. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention adopts a technical solution to solve the technical problems: the waste heat recovery equipment for treating combustion flue gas of natural gas power generation described in the present invention comprises: A shell, a side of the shell being fixedly connected to a smoke inlet component, and a side of the shell away from the smoke inlet component being fixedly connected to a smoke outlet component; A connecting component, which is used to recover the waste heat of the flue gas burned during natural gas power generation, and the side surface of the connecting component is fixedly connected to the inner side of the shell; The smoke inlet component comprises a smoke inlet pipe, the side surface of the smoke inlet pipe is fixedly connected to the inner side of the shell, the inner wall of the smoke inlet pipe is fixedly connected to a baffle, the side surface of the baffle is fixedly connected to a telescopic rod, the end of the telescopic rod away from the baffle is fixedly connected to a connecting frame, a third spring is sleeved on the telescopic rod, one end of the third spring is fixedly connected to the baffle, the other end of the third spring is fixedly connected to the connecting frame, and a side of the connecting frame close to the baffle is fixedly connected to an ejection mechanism; it is connected to the smoke inlet pipe through an external pipeline, when the combustion flue gas of the natural gas power generation is kept When the smoke continues to pass through the baffle and enter the smoke inlet pipe, the connecting frame is driven by the telescopic rod and the third spring to separate from the baffle and move in the smoke inlet pipe. At the same time, when the combustion smoke of the natural gas power generation finishes the heat exchange work, the connecting frame drives the ejection mechanism through the stretching effect of the third spring to move toward the baffle, thereby preventing a large amount of combustion smoke from continuously passing through the baffle and entering the air inlet pipe. A large amount of smoke particles will remain in the baffle mesh. If it is not cleaned, a large amount of smoke particles will cause blockage in the baffle mesh, thereby interfering with the normal passing speed of the combustion smoke.

[0005] Preferably, the ejection mechanism includes an ejection rod, a side surface of the ejection rod is fixedly connected to the connecting frame, a sliding groove is provided on the side surface of the ejection rod, a sliding rod is slidably connected to the inner side of the sliding groove, a sliding sleeve is fixedly connected to the side surface of the sliding rod, scrapers are fixedly connected to both sides of the sliding groove, through holes are evenly provided on the sides of the scraper, a connecting shaft is fixedly connected to the side of the sliding rod away from the sliding sleeve, the side surface of the connecting shaft is slidably connected to the inner side of the ejection rod, an end of the connecting shaft away from the sliding rod is fixedly connected to a conical block, a fourth spring is sleeved on the connecting shaft, one end of the fourth spring is fixedly connected to the ejection rod, and the other end of the fourth spring is fixedly connected to the conical block; when the combustion flue gas of the natural gas power generation ends the heat exchange work, the connecting frame is stretched to the outside through the third spring. The baffle moves, and at the same time, the connecting frame drives the ejector rod to move toward the baffle, so that the ejector rod drives the conical block through the sliding rod to first contact the mesh of the baffle, thereby preventing the smoke particles in the combustion smoke from being blocked in the mesh of the baffle when the combustion smoke continues to pass through, and at the same time, the connecting frame is continuously driven by the third spring, so that the ejector rod drives the scraper to contact and move with the inner wall of the baffle mesh through the sliding sleeve, thereby scraping off the smoke residue attached to the inner wall of the baffle mesh. At the same time, when the scraper contacts and moves with the inner wall of the mesh, the scraper is squeezed by the extrusion force to drive the sliding sleeve to pass, and the slide rod moves in the slide groove. At the same time, the buffering force of the fourth spring is used to avoid excessive extrusion between the scraper and the inner wall of the mesh, which will cause damage to the side of the scraper.

[0006] Preferably, the connecting component includes a heat exchange box and a collecting tank, the side of the heat exchange box is fixedly connected to the inner side of the shell, the side of the heat exchange box is fixedly connected to a water inlet, the side of the heat exchange box away from the water inlet is fixedly connected to a water outlet, the side of the water inlet is fixedly connected to a connecting pipe, the side of the connecting pipe is fixedly connected to a water pump, the collecting tank is opened on the inner side of the shell, sliding grooves are opened on both sides of the heat exchange box, the inner wall of the sliding groove is fixedly connected to a sliding rod, a first spring is sleeved on the sliding rod, one end of the first spring is fixedly connected to the inner wall of the heat exchange box, and the other end of the first spring is fixedly connected to a contact mechanism; when the combustion smoke enters the shell through the smoke inlet pipe, it is connected to the water inlet through an external water pipe, and cold water continuously enters through the water inlet In the heat exchange box, the combustion flue gas is in full contact with the cold water to heat the cold water, and the heated cold water is discharged through the water outlet. When the combustion flue gas continues to contact the heat exchange tube, a large amount of condensed water will be retained on the side of the heat exchange tube, and a large amount of condensed water will consume the heat in the combustion flue gas, which will cause heat loss to the heat exchange work. When the combustion flue gas continues to impact and contact the heat exchange box, the contact mechanism moves on the sliding rod, so that the contact mechanism can scrape off the condensed water hanging on the heat exchange tube, and the scraped condensed water can fall into the collection tank. At the same time, by turning on the water pump and driving it, the condensed water in the collection tank enters the water inlet through the connecting pipe, so that the condensed water generated by the heat exchange work is reused for the second time.

[0007] Preferably, the contact mechanism includes a contact frame, wherein the upper and lower sides of the contact frame are fixedly connected with sliders, the end of the first spring away from the inner wall of the heat exchange box is fixedly connected to the side of the slider, the side of the slider is slidably connected to the inner side of the sliding groove, the side of the slider is provided with a clearance hole, the inner wall of the clearance hole is slidably connected to the side of the sliding rod, and the two sides of the contact frame are slidably connected with bent plates, and a second spring is provided on the inner side of the contact frame, and the two ends of the second spring are evenly fixedly connected with the bent plates; when the combustion flue gas continues to enter the heat exchange box, the contact frame is impacted by the flue gas, so that the contact frame moves on the sliding rod through the slider, so that the contact frame drives the bent plate to contact and move with the heat exchange tube, so that the bent plate can scrape off the condensed water on the heat exchange tube, and at the same time, when the bent plate contacts and moves with the heat exchange tube, when the bent plate and the heat exchange tube are squeezed and contacted, the second spring can be stretched to enable the bent plate to move on the contact frame, thereby avoiding the phenomenon that the bent plate interferes with the heat exchange tube when the bent plate contacts and cleans the heat exchange tube.

[0008] Preferably, the smoke outlet component includes a smoke outlet pipe, a side surface of the smoke outlet pipe is fixedly connected to the inner side of the shell, the inner side of the smoke outlet pipe is fixedly connected to a mesh plate, a side of the smoke outlet pipe away from the mesh plate is fixedly connected to a fixing frame, a side of the fixing frame close to the mesh plate is fixedly connected to a guide rod, a cleaning mechanism is slidably connected to the guide rod, a fifth spring is sleeved on the guide rod, one end of the fifth spring is fixedly connected to the fixing frame, and the other end of the fifth spring is fixedly connected to the circular plate; when the flue gas after heat exchange is completed is discharged through the smoke outlet pipe, the cleaning mechanism is continuously impacted by the smoke, so that the cleaning mechanism moves on the guide rod, so that the cleaning mechanism can clean the inner wall of the smoke outlet pipe, thereby avoiding a large amount of smoke being discharged, which will leave a large amount of smoke and dust stains on the inner wall of the smoke outlet pipe.

[0009] Preferably, the cleaning mechanism includes a circular plate, the inner side of which is slidably connected to the side of the guide rod, and the side of the circular plate is evenly provided with clearance grooves. Arc plates are fixedly connected on both sides of the circular plate, and the side of the arc plate is evenly provided with through holes. When the smoke continues to impact the circular plate, the circular plate drives the arc plate to move on the guide rod, so that the arc plate cleans the inner wall of the smoke outlet pipe, thereby continuously passing the smoke through to scrape off the smoke dust remaining on the inner wall of the smoke outlet pipe. At the same time, by providing the clearance groove on the circular plate, the smoke can pass normally, avoiding the reduction of the smoke passing speed when the smoke impacts the circular plate.

[0010] The beneficial effects of the present invention are as follows: 1. The present invention sets a connecting component. When the combustion smoke enters the shell through the smoke inlet pipe, it is connected to the water inlet through an external water pipe, and cold water continuously enters the heat exchange box through the water inlet, so as to fully contact with the combustion smoke to heat the cold water, and the heated cold water is discharged through the water outlet. When the combustion smoke continues to contact the heat exchange tube, a large amount of condensed water will be retained on the side of the heat exchange tube, and a large amount of condensed water will consume the heat in the combustion smoke, and then cause heat loss to the heat exchange work. When the combustion smoke continues to impact and contact the heat exchange box, the contact mechanism moves on the sliding rod, so that the contact mechanism scrapes off the condensed water retained on the heat exchange tube, and the scraped condensed water can fall into the collection tank. At the same time, by turning on the water pump and driven by the water pump, the condensed water in the collection tank enters the water inlet through the connecting pipe, so that the condensed water generated by the heat exchange work is reused for the second time.

[0011] 2. The present invention sets a contact mechanism. When the combustion flue gas continuously enters the heat exchange box, the flue gas impacts the contact frame, so that the contact frame moves on the sliding rod through the slider, so that the contact frame drives the bent plate to contact and move with the heat exchange tube, so that the bent plate can scrape off the condensed water on the heat exchange tube. At the same time, when the bent plate contacts and moves with the heat exchange tube, when the bent plate and the heat exchange tube are squeezed and contacted, the second spring can be stretched to enable the bent plate to move on the contact frame, thereby avoiding the phenomenon that the bent plate interferes with the heat exchange tube when the bent plate contacts and cleans the heat exchange tube.

[0012] 3. The present invention provides an ejection mechanism. When the combustion flue gas of natural gas power generation finishes the heat exchange work, the connecting frame moves toward the baffle through the stretching action of the third spring, and at the same time, the connecting frame drives the ejection rod to move toward the baffle, so that the ejection rod drives the conical block through the sliding rod to first contact the mesh of the baffle, thereby preventing the smoke particles in the combustion flue gas from being blocked in the mesh of the baffle when the combustion flue gas continues to pass through. At the same time, the connecting frame is continuously driven by the third spring, so that the ejection rod drives the scraper through the sliding sleeve to contact and move with the inner wall of the baffle mesh, thereby scraping off the smoke residue attached to the inner wall of the baffle mesh.

[0013] 4. The present invention provides a cleaning mechanism. When the smoke continuously impacts the circular plate, the circular plate drives the arc plate to move on the guide rod, so that the arc plate cleans the inner wall of the smoke outlet pipe, so that the smoke continues to pass through and the smoke dust remaining on the inner wall of the smoke outlet pipe is scraped off. At the same time, a clearance groove is provided on the circular plate to enable the smoke to pass normally, avoiding the reduction of the smoke passing speed when the smoke impacts the circular plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a waste heat recovery device for treating combustion flue gas of natural gas power generation according to the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the connecting component of the present invention; Figure 4 It is a structural schematic diagram of the contact mechanism of the present invention; Figure 5 It is a structural schematic diagram of the smoke inlet component of the present invention; Figure 6 It is a structural schematic diagram of the ejection mechanism of the present invention; Figure 7 It is a structural schematic diagram of the smoke outlet component of the present invention; Figure 8 It is a structural schematic diagram of the cleaning mechanism of the present invention; In the figure: 1, housing; 2, smoke inlet component; 21, smoke inlet pipe; 22, baffle; 23, connecting frame; 24, telescopic rod; 25, third spring; 26, ejection mechanism; 261, ejection rod; 262, slide groove; 263, slide rod; 264, slide sleeve; 265, scraper; 266, through hole; 267, connecting shaft; 268, cone block; 269, fourth spring; 3, smoke outlet component; 31, smoke outlet pipe; 32, mesh plate; 33, fixing frame; 34, guide rod; 3 5. Cleaning mechanism; 351. Circular plate; 352. Displacement groove; 353. Arc plate; 354. Through hole; 36. Fifth spring; 4. Connecting parts; 41. Heat exchange box; 42. Water outlet; 43. Water inlet; 44. Connecting pipe; 45. Water pump; 46. First spring; 47. Sliding rod; 48. Contact mechanism; 481. Contact frame; 482. Sliding block; 483. Displacement hole; 484. Bending plate; 485. Second spring; 49. Collecting trough; 410. Sliding trough. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0016] Example 1, using Figure 1-Figure 6 A waste heat recovery device for treating combustion flue gas of natural gas power generation according to one embodiment of the present invention is described as follows: like Figure 1-Figure 6 The invention discloses a waste heat recovery device for treating combustion flue gas of natural gas power generation, comprising: A shell 1, a smoke inlet component 2 is fixedly connected to the side of the shell 1, and a smoke outlet component 3 is fixedly connected to the side of the shell 1 away from the smoke inlet component 2; A connecting component 4, which is used to recover the waste heat of the flue gas burned during natural gas power generation, and the side of the connecting component 4 is fixedly connected to the inner side of the housing 1; The smoke inlet component 2 includes a smoke inlet pipe 21, the side of the smoke inlet pipe 21 is fixedly connected to the inner side of the shell 1, the inner wall of the smoke inlet pipe 21 is fixedly connected to a baffle 22, the side of the baffle 22 is fixedly connected to a telescopic rod 24, the end of the telescopic rod 24 away from the baffle 22 is fixedly connected to a connecting frame 23, a third spring 25 is sleeved on the telescopic rod 24, one end of the third spring 25 is fixedly connected to the baffle 22, the other end of the third spring 25 is fixedly connected to the connecting frame 23, and a side of the connecting frame 23 close to the baffle 22 is fixedly connected to an ejection mechanism 26; it is connected to the smoke inlet pipe 21 through an external pipeline, and when the combustion flue gas of natural gas power generation continues to pass through When the baffle 22 enters the smoke inlet pipe 21, the connecting frame 23 is driven by the telescopic rod 24 and the third spring 25 to separate from the baffle 22 and move in the smoke inlet pipe 21. At the same time, when the combustion flue gas of natural gas power generation finishes the heat exchange work, the connecting frame 23 drives the ejection mechanism 26 through the stretching action of the third spring 25 to move toward the baffle 22, thereby preventing a large amount of combustion flue gas from continuously passing through the baffle 22 into the air inlet pipe, which will cause a large amount of smoke particles to remain in the mesh of the baffle 22. If it is not cleaned, a large amount of smoke particles will cause clogging of the mesh of the baffle 22, thereby interfering with the normal passing speed of the combustion flue gas.

[0017] The ejection mechanism 26 includes an ejection rod 261, the side of the ejection rod 261 is fixedly connected to the connecting frame 23, a sliding groove 262 is provided on the side of the ejection rod 261, a sliding rod 263 is slidably connected to the inner side of the sliding groove 262, a sliding sleeve 264 is fixedly connected to the side of the sliding rod 263, scrapers 265 are fixedly connected to both sides of the sliding groove 410, through holes 266 are evenly provided on the side of the scraper 265, and a connecting shaft 26 is fixedly connected to the side of the sliding rod 263 away from the sliding sleeve 264. 7. The side of the connecting shaft 267 is slidably connected to the inner side of the ejector rod 261. The end of the connecting shaft 267 away from the sliding rod 263 is fixedly connected to the conical block 268. A fourth spring 269 is sleeved on the connecting shaft 267. One end of the fourth spring 269 is fixedly connected to the ejector rod 261, and the other end of the fourth spring 269 is fixedly connected to the conical block 268. When the combustion flue gas of the natural gas power generation ends the heat exchange work, the connecting frame 23 is stretched to the baffle 2 by the stretching action of the third spring 25. 2 is moved, and the connecting frame 23 drives the ejector rod 261 to move toward the baffle 22, so that the ejector rod 261 drives the conical block 268 through the sliding rod 263 to first contact the mesh of the baffle 22, so as to prevent the smoke particles in the combustion smoke from being blocked in the mesh of the baffle 22 when the combustion smoke continues to pass through. At the same time, the connecting frame 23 is continuously driven by the third spring 25, so that the ejector rod 261 drives the scraper 265 through the sliding sleeve 264 to contact the mesh of the baffle 22. The inner wall of the mesh of the baffle plate 22 is contacted and moved, thereby scraping off the smoke and dust residue attached to the inner wall of the mesh of the baffle plate 22. At the same time, when the scraper 265 is contacted and moved with the inner wall of the mesh, the scraper 265 is squeezed and can drive the sliding sleeve 264 to pass, and the slide rod 263 moves in the slide groove 262. At the same time, the buffering force of the fourth spring 269 is used to avoid excessive squeezing force between the scraper 265 and the inner wall of the mesh, which will cause damage to the side of the scraper 265.

[0018] Embodiment 2, use Figure 1-Figure 6 The waste heat recovery device for treating combustion flue gas of natural gas power generation according to the present invention is described as follows: like Figure 1-Figure 6 It is shown that a waste heat recovery device for treating combustion flue gas of natural gas power generation of the present invention is based on the first embodiment; The connecting component 4 includes a heat exchange box 41 and a collecting tank 49. The side of the heat exchange box 41 is fixedly connected to the inner side of the shell 1. The side of the heat exchange box 41 is fixedly connected with a water inlet 43. The side of the heat exchange box 41 away from the water inlet 43 is fixedly connected with a water outlet 42. The side of the water inlet 43 is fixedly connected with a connecting pipe 44. The side of the connecting pipe 44 is fixedly connected with a water pump 45. The collecting tank 49 is opened on the inner side of the shell 1. Sliding grooves 410 are opened on both sides of the heat exchange box 41. The inner wall of the sliding groove 410 is fixedly connected with a sliding rod 47. The sliding rod 47 is sleeved with a first spring 46. One end of the first spring 46 is fixedly connected to the inner wall of the heat exchange box 41. The other end of the first spring 46 is fixedly connected with a contact mechanism 48. When the combustion smoke enters the shell 1 through the smoke inlet pipe 21, it is connected to the water inlet 43 through an external water pipe, and cold water is continuously supplied through the water inlet 43. It enters the heat exchange box 41, thereby making full contact with the combustion flue gas to heat the cold water, and the heated cold water is discharged through the water outlet 42. When the combustion flue gas continues to contact the heat exchange tube, a large amount of condensed water will be retained on the side of the heat exchange tube, and a large amount of condensed water will consume the heat in the combustion flue gas, which will cause heat loss to the heat exchange work. When the combustion flue gas continues to impact and contact the heat exchange box 41, the contact mechanism 48 moves on the sliding rod 47, so that the contact mechanism 48 can scrape off the condensed water hanging on the heat exchange tube, and the scraped condensed water can fall into the collection tank 49. At the same time, by turning on the water pump 45, the condensed water in the collection tank 49 is driven by the water pump 45 to enter the water inlet 43 through the connecting pipe 44, so that the condensed water generated by the heat exchange work is reused for the second time.

[0019] The contact mechanism 48 includes a contact frame 481, and the upper and lower sides of the contact frame 481 are fixedly connected with a slider 482, and the end of the first spring 46 away from the inner wall of the heat exchange box 41 is fixedly connected to the side of the slider 482, and the side of the slider 482 is slidably connected to the inner side of the sliding groove 410. The side of the slider 482 is provided with a clearance hole 483, and the inner wall of the clearance hole 483 is slidably connected to the side of the sliding rod 47. The two sides of the contact frame 481 are slidably connected with a bent plate 484, and a second spring 485 is provided on the inner side of the contact frame 481. The two ends of the second spring 485 are evenly fixedly connected to the bent plate 484; when the combustion flue gas continues to enter the heat exchange box 41 , the flue gas impacts the contact frame 481, so that the contact frame 481 moves on the sliding rod 47 through the slider 482, so that the contact frame 481 drives the bent plate 484 to contact and move with the heat exchange tube, so that the bent plate 484 can scrape off the condensed water on the heat exchange tube, and at the same time, when the bent plate 484 contacts and moves with the heat exchange tube, when the bent plate 484 is squeezed and contacted with the heat exchange tube, the second spring 485 can be stretched to enable the bent plate 484 to move on the contact frame 481, thereby avoiding the phenomenon that the bent plate 484 interferes with the heat exchange tube when the bent plate 484 contacts and cleans the heat exchange tube.

[0020] Example 3, using Figure 7-Figure 8 The waste heat recovery device for treating combustion flue gas of natural gas power generation according to the present invention is described as follows: like Figure 7-Figure 8 It is shown that a waste heat recovery device for treating combustion flue gas of natural gas power generation of the present invention is based on the first embodiment; The smoke outlet component 3 includes a smoke outlet pipe 31, the side of the smoke outlet pipe 31 is fixedly connected to the inner side of the shell 1, the inner side of the smoke outlet pipe 31 is fixedly connected to a mesh plate 32, the side of the smoke outlet pipe 31 away from the mesh plate 32 is fixedly connected to a fixing frame 33, the side of the fixing frame 33 close to the mesh plate 32 is fixedly connected to a guide rod 34, a cleaning mechanism 35 is slidably connected to the guide rod 34, a fifth spring 36 is sleeved on the guide rod 34, one end of the fifth spring 36 is fixedly connected to the fixing frame 33, and the other end of the fifth spring 36 is fixedly connected to the circular plate 351; when the smoke after heat exchange is completed is discharged through the smoke outlet pipe 31, the cleaning mechanism 35 is continuously impacted by the smoke, so that the cleaning mechanism 35 moves on the guide rod 34, so that the cleaning mechanism can clean the inner wall of the smoke outlet pipe 31, thereby avoiding a large amount of smoke being discharged, which will leave a large amount of smoke and dust stains on the inner wall of the smoke outlet pipe 31.

[0021] The cleaning mechanism 35 includes a circular plate 351, the inner side of which is slidably connected to the side of the guide rod 34, and the side of the circular plate 351 is evenly provided with a clearance groove 352. The two sides of the circular plate 351 are fixedly connected with an arc plate 353, and the side of the arc plate 353 is evenly provided with a through hole 354. When the smoke continues to impact the circular plate 351, the circular plate 351 drives the arc plate 353 to move on the guide rod 34, so that the arc plate 353 cleans the inner wall of the smoke outlet pipe 31, so that the smoke continues to pass through and the smoke dust remaining on the inner wall of the smoke outlet pipe 31 is scraped off. At the same time, by providing the clearance groove 352 on the circular plate 351, the smoke can pass normally, avoiding the reduction of the smoke passing speed when the smoke impacts the circular plate 351.

[0022] The specific workflow is as follows: During operation, the smoke inlet component 2 is connected to an external pipe, so that the combustion smoke of natural gas power generation enters the housing 1 through the smoke inlet component 2, and then the smoke heat exchange work is performed through the connecting component 4, and the smoke after the heat exchange work is completed is discharged through the smoke outlet component 3; It is connected to the smoke inlet pipe 21 through an external pipe. When the combustion flue gas of natural gas power generation continues to enter the smoke inlet pipe 21 through the baffle 22, the connecting frame 23 is driven by the telescopic rod 24 and the third spring 25 to separate from the baffle 22 and move in the smoke inlet pipe 21. At the same time, when the combustion flue gas of natural gas power generation finishes the heat exchange work, the connecting frame 23 drives the ejection mechanism 26 to move toward the baffle 22 through the stretching effect of the third spring 25, thereby preventing a large amount of combustion flue gas from continuously passing through the baffle 22 to enter the air inlet pipe, which will leave a large amount of smoke particles in the mesh of the baffle 22. If it is not cleaned, a large amount of smoke particles will cause clogging of the mesh of the baffle 22, thereby interfering with the normal speed of the combustion flue gas passing through; When the combustion flue gas of natural gas power generation finishes the heat exchange work, the connecting frame 23 moves toward the baffle 22 through the stretching action of the third spring 25, and at the same time, the connecting frame 23 drives the ejector rod 261 to move toward the baffle 22, so that the ejector rod 261 drives the conical block 268 through the sliding rod 263 to first contact the mesh of the baffle 22, thereby preventing the smoke particles in the combustion flue gas from being blocked at the mesh of the baffle 22 when the combustion flue gas continues to pass through, and at the same time, the connecting frame 23 is continuously driven by the third spring 25, so that the ejector rod 261 drives the conical block 268 to first contact the mesh of the baffle 22 The rod 261 drives the scraper 265 to move in contact with the inner wall of the mesh of the baffle 22 through the sliding sleeve 264, so as to scrape off the smoke and dust residue attached to the inner wall of the mesh of the baffle 22. At the same time, when the scraper 265 moves in contact with the inner wall of the mesh, the scraper 265 is squeezed to drive the sliding sleeve 264 to pass, and the slide bar 263 moves in the slide groove 262. At the same time, the buffering force of the fourth spring 269 is used to prevent the extrusion force between the scraper 265 and the inner wall of the mesh from being too large, thereby causing damage to the side of the scraper 265. When the combustion flue gas enters the shell 1 through the smoke inlet pipe 21, it is connected to the water inlet 43 through an external water pipe, and cold water continues to enter the heat exchange box 41 through the water inlet 43, so as to fully contact with the combustion flue gas to heat the cold water, and the heated cold water is discharged through the water outlet 42. When the combustion flue gas continues to contact the heat exchange tube, a large amount of condensed water will be retained on the side of the heat exchange tube, and a large amount of condensed water will consume the heat in the combustion flue gas, and then cause heat loss to the heat exchange work. When the combustion flue gas continues to impact and contact the heat exchange box 41, the contact mechanism 48 moves on the sliding rod 47, so that the contact mechanism 48 scrapes off the condensed water hanging on the heat exchange tube, and the scraped condensed water can fall into the collection tank 49. At the same time, by turning on the water pump 45, the condensed water in the collection tank 49 enters the water inlet 43 through the connecting pipe 44 driven by the water pump 45, so that the condensed water generated by the heat exchange work is reused for the second time. When the combustion flue gas continues to enter the heat exchange box 41, the flue gas impacts the contact frame 481, so that the contact frame 481 moves on the sliding rod 47 through the slider 482, so that the contact frame 481 drives the bent plate 484 to contact and move with the heat exchange tube, so that the bent plate 484 can scrape off the condensed water on the heat exchange tube. At the same time, when the bent plate 484 contacts and moves with the heat exchange tube, when the bent plate 484 is squeezed and contacted with the heat exchange tube, the bent plate 484 can be stretched by the second spring 485 so that the bent plate 484 can move on the contact frame 481, so as to avoid the phenomenon that the bent plate 484 interferes with the heat exchange tube when the bent plate 484 contacts and cleans the heat exchange tube; After the smoke is discharged through the smoke outlet pipe 31 after the heat exchange is completed, the smoke continues to impact the cleaning mechanism 35, so that the cleaning mechanism 35 moves on the guide rod 34, so that the cleaning mechanism can clean the inner wall of the smoke outlet pipe 31, thereby preventing a large amount of smoke from being discharged and leaving a large amount of smoke and dust stains on the inner wall of the smoke outlet pipe 31; When the smoke continues to impact the circular plate 351, the circular plate 351 drives the arc plate 353 to move on the guide rod 34, so that the arc plate 353 cleans the inner wall of the smoke outlet pipe 31, so that the smoke continues to pass through and the smoke dust remaining on the inner wall of the smoke outlet pipe 31 is scraped off. At the same time, by providing a yield groove 352 on the circular plate 351, the smoke can pass normally, avoiding the reduction of the smoke passing speed when the smoke impacts the circular plate 351.

[0023] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A waste heat recovery device for treating combustion flue gas in natural gas power generation, characterized in that: include: A housing (1), a side of the housing (1) being fixedly connected to a smoke inlet component (2), and a side of the housing (1) away from the smoke inlet component (2) being fixedly connected to a smoke outlet component (3); A connecting component (4), the connecting component (4) being used to recover waste heat from flue gas burned during natural gas power generation, the side surface of the connecting component (4) being fixedly connected to the inner side of the outer shell (1); The connecting component (4) comprises a heat exchange box (41) and a collecting tank (49); a water inlet (43) is fixedly connected to a side of the heat exchange box (41); a water outlet (42) is fixedly connected to a side of the heat exchange box (41) away from the water inlet (43); a connecting pipe (44) is fixedly connected to a side of the water inlet (43); a water pump (45) is fixedly connected to a side of the connecting pipe (44); the collecting tank (49) is opened on the inner side of the outer shell (1); sliding grooves (410) are opened on both sides of the heat exchange box (41); a sliding rod (47) is fixedly connected to the inner wall of the sliding groove (410); a first spring (46) is sleeved on the sliding rod (47); one end of the first spring (46) is fixedly connected to the inner wall of the heat exchange box (41); and the other end of the first spring (46) is fixedly connected to a contact mechanism (48).

2. The waste heat recovery equipment for treating combustion flue gas of natural gas power generation according to claim 1 is characterized by: The contact mechanism (48) comprises a contact frame (481), wherein the upper and lower sides of the contact frame (481) are fixedly connected to sliders (482), the side of the slider (482) is provided with a clearance hole (483), and the two sides of the contact frame (481) are slidably connected to bent plates (484), and a second spring (485) is provided on the inner side of the contact frame (481), and both ends of the second spring (485) are fixedly connected to the bent plates (484).

3. The waste heat recovery equipment for treating combustion flue gas of natural gas power generation according to claim 2 is characterized in that: The side surface of the heat exchange box (41) is fixedly connected to the inner side of the outer shell (1), the side surface of the slider (482) is slidably connected to the inner side of the sliding groove (410), the inner wall of the clearance hole (483) is slidably connected to the side surface of the sliding rod (47), and the end of the first spring (46) away from the inner wall of the heat exchange box (41) is fixedly connected to the side surface of the slider (482).

4. The waste heat recovery equipment for treating combustion flue gas of natural gas power generation according to claim 1 is characterized in that: The smoke inlet component (2) comprises a smoke inlet pipe (21), the side of the smoke inlet pipe (21) being fixedly connected to the inner side of the housing (1), the inner wall of the smoke inlet pipe (21) being fixedly connected to a baffle (22), the side of the baffle (22) being fixedly connected to a telescopic rod (24), one end of the telescopic rod (24) away from the baffle (22) being fixedly connected to a connecting frame (23), a third spring (25) being sleeved on the telescopic rod (24), and a side of the connecting frame (23) close to the baffle (22) being fixedly connected to an ejection mechanism (26).

5. The waste heat recovery equipment for treating combustion flue gas in natural gas power generation according to claim 4 is characterized in that: The ejection mechanism (26) comprises an ejection rod (261), the side of the ejection rod (261) is fixedly connected to the connecting frame (23), a sliding groove (262) is provided on the side of the ejection rod (261), a sliding rod (263) is slidably connected to the inner side of the sliding groove (262), a sliding sleeve (264) is fixedly connected to the side of the sliding rod (263), scrapers (265) are fixedly connected to both sides of the sliding groove (410), through holes (266) are evenly provided on the side of the scraper (265), a connecting shaft (267) is fixedly connected to the side of the sliding rod (263) away from the sliding sleeve (264), a conical block (268) is fixedly connected to the end of the connecting shaft (267) away from the sliding rod (263), and a fourth spring (269) is sleeved on the connecting shaft (267).

6. The waste heat recovery equipment for treating combustion flue gas in natural gas power generation according to claim 5, characterized in that: One end of the third spring (25) is fixedly connected to the baffle (22), the other end of the third spring (25) is fixedly connected to the connecting frame (23), the side surface of the connecting shaft (267) is slidably connected to the inner side of the ejection rod (261), one end of the fourth spring (269) is fixedly connected to the ejection rod (261), and the other end of the fourth spring (269) is fixedly connected to the conical block (268).

7. The waste heat recovery equipment for treating combustion flue gas in natural gas power generation according to claim 1, characterized in that: The smoke outlet component (3) comprises a smoke outlet pipe (31), the inner side of the smoke outlet pipe (31) is fixedly connected to a mesh plate (32), the side of the smoke outlet pipe (31) away from the mesh plate (32) is fixedly connected to a fixing frame (33), the side of the fixing frame (33) close to the mesh plate (32) is fixedly connected to a guide rod (34), the guide rod (34) is slidably connected to a cleaning mechanism (35), and the guide rod (34) is sleeved with a fifth spring (36).

8. The waste heat recovery equipment for treating combustion flue gas in natural gas power generation according to claim 7, characterized in that: The cleaning mechanism (35) comprises a circular plate (351), the side surfaces of the circular plate (351) are evenly provided with clearance grooves (352), both sides of the circular plate (351) are fixedly connected with arc plates (353), and the side surfaces of the arc plates (353) are evenly provided with through holes (354).

9. The waste heat recovery equipment for treating combustion flue gas in natural gas power generation according to claim 8, characterized in that: The side surface of the smoke outlet pipe (31) is fixedly connected to the inner side of the outer shell (1), one end of the fifth spring (36) is fixedly connected to the fixing frame (33), the other end of the fifth spring (36) is fixedly connected to the circular plate (351), and the inner side of the circular plate (351) is slidably connected to the side surface of the guide rod (34).

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