Flue gas waste heat recovery and utilization device for thermal power plant

Abstract

The invention relates to the technical field of environmental protection, and discloses a thermal power plant flue gas waste heat recovery and utilization device which comprises a supporting table, a hydraulic cylinder is fixedly connected to the lower surface of the supporting table, a sliding frame is fixedly connected to the output end of the hydraulic cylinder, and a first connecting rod is fixedly connected to the outer wall of a first gear. A connecting block is rotatably connected to the inner wall of the first connecting rod, a second toothed plate is fixedly connected to the outer wall of the right side of the sliding frame, a second gear is connected to the outer wall of the second toothed plate in an engaged mode, and the outer wall of the second connecting rod is rotatably connected to the inner wall of the connecting block. A hydraulic cylinder drives a sliding frame to slide on the inner wall of a supporting table, a second gear drives a second connecting rod and a limiting transverse rod to synchronously drive a connecting block to move up and down, the height adjusting effect is achieved in the using process, and the height of the recycling box can be adjusted according to the using height requirement; and when the bottom plate is driven by the connecting block to be folded, the effect of fast fixing can be achieved in the using process.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection, and in particular to a device for recovering and utilizing waste heat from flue gas in a thermal power plant. Background Art

[0002] In a thermal power plant, fuel (such as coal, oil or natural gas) is burned in a boiler. This combustion process is to produce high-temperature and high-pressure steam to drive the turbine to generate electricity. After combustion, a large amount of gas is produced, which mainly contains carbon dioxide, water vapor, nitrogen, oxygen, and a small amount of sulfur dioxide, nitrogen oxides and particulate matter.

[0003] The flue gas waste heat recovery and utilization device of thermal power plants is a device specially used in thermal power plants. Its main function is to recover heat from the flue gas generated in the thermal power generation process and reuse the recovered heat.

[0004] The height of many recovery devices is fixed and cannot be flexibly adjusted according to different usage scenarios and actual needs. This may cause mismatches when connected to the flue gas emission pipe, affecting the waste heat recovery efficiency. Traditional equipment is difficult to quickly achieve stable fixation or convenient mobile switching, which brings many inconveniences to actual operations. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a flue gas waste heat recovery and utilization device for a thermal power plant to solve the problem that it cannot be flexibly adjusted according to different usage scenarios and actual needs, which may cause mismatch when connected to the flue gas emission pipe, affecting the waste heat recovery efficiency. Traditional equipment is difficult to quickly achieve stable fixation or convenient mobile switching.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for recovering and utilizing waste heat from flue gas in a thermal power plant, comprising a support platform, a hydraulic cylinder fixedly connected to the lower surface of the support platform, a slide fixedly connected to the output end of the hydraulic cylinder, an outer wall of the slide slidably connected to the inner wall of the support platform, a first tooth plate fixedly connected to the left outer wall of the slide, an outer wall of the first tooth plate meshingly connected to a first gear, an outer wall of the first gear rotatably connected to the inner wall of the support platform, a first connecting rod fixedly connected to the outer wall of the first gear, an inner wall of the first connecting rod rotatably connected to a connecting block, a second tooth plate fixedly connected to the right outer wall of the slide, an outer wall of the second tooth plate meshingly connected to a second gear, an outer wall of the second gear rotatably connected to the inner wall of the support platform, an outer wall of the second gear fixedly connected to a second connecting rod, the inner walls of the second connecting rods on both sides are rotatably connected to a limiting cross bar, the outer wall of the second connecting rod is rotatably connected to the inner wall of the connecting block, and a recovery component is provided on the upper surface of the support platform, the recovery component is used to recover waste heat.

[0007] Preferably, the recycling component includes a recycling box, the lower surface of the recycling box is fixedly connected to the upper surface of the support platform, the outer wall of the recycling box is fixedly connected to a hinge, the outer wall of the hinge is fixedly connected to an upper cover, the lower surface of the upper cover is slidably connected to the upper surface of the recycling box, and the outer wall of the upper cover is fixedly connected to an opening and closing handle.

[0008] Preferably, the lower surface of the connecting block is fixedly connected to a base plate, the inner wall of the base plate is fixedly connected to a sliding sleeve, the inner wall of the sliding sleeve is slidably connected to a support column, and the upper surface of the support column is fixedly connected to the lower surface of the support platform.

[0009] Preferably, the outer wall of the support column is fixedly connected with a slide plate, the outer wall of the slide plate is slidably connected with a slider, the inner wall of the slider is rotatably connected with a limiting support rod, and the outer wall of the limiting support rod is rotatably connected to the inner wall of the sliding sleeve.

[0010] Preferably, a pulley is fixedly connected to the lower surface of the support column, a support block is fixedly connected to the lower surface of the base plate, a smoke inlet pipe is fixedly connected to the right inner wall of the recovery box, and a smoke outlet pipe is fixedly connected to the left inner wall of the recovery box.

[0011] Preferably, a drain pipe is fixedly connected to the lower inner wall of the recovery box, the outer wall of the drain pipe is slidably connected to the inner wall of the support platform, the inner wall of the recovery box is slidably connected to a mounting shell, and the inner wall of the mounting shell is slidably connected to a heat exchange plate.

[0012] Preferably, the outer wall of the recycling box is fixedly connected to a casing, the inner wall of the casing is slidably connected to a clamping rod, the inner wall of the casing is provided with a pressing groove, and the left inner wall of the casing is fixedly connected to a fixing ring.

[0013] Preferably, the outer wall of the clamping rod is slidably connected to the inner wall of the fixing ring, the right outer wall of the fixing ring is fixedly connected to a first spring, the right outer wall of the first spring is fixedly connected to a locking ring, and the inner wall of the first spring is slidably connected to the outer wall of the clamping rod.

[0014] Preferably, a cavity is provided on the upper side of the locking ring, the upper side of the cavity is slidably connected to the inside of the pressing groove, and the upper surface of the cavity is slidably connected to a second spring.

[0015] Preferably, a button is fixedly connected to the upper surface of the second spring, the outer wall of the second spring is slidably connected to the inner wall of the pressing groove, and the outer wall of the locking ring is slidably connected to the inner wall of the housing.

[0016] Working principle: When the device is needed, the smoke inlet pipe is connected to the smoke channel that needs to be recycled, and the smoke enters the recovery box through the pipe, absorbs the heat through the heat exchange plate, and takes the heat out for recycling through the water in the internal pipe of the heat exchange plate. During use, the smoke is discharged to the outside through the drain pipe, and the treated smoke is discharged to the outside through the smoke outlet pipe. During use, the second spring is compressed by pressing the button and the cavity is squeezed downward, and the lock ring slides out of the pressing groove and moves backward. At this time, the first spring drives the clamping rod to slide out of the mounting shell under the limit of the fixing ring, so that the mounting shell can be quickly taken out during use, thereby taking out the heat exchange plate for inspection and replacement. During use, the hydraulic cylinder drives the slide to slide on the inner wall of the support platform. The first gear is driven by the slide frame to drive the first connecting rod to rotate under the limit of the support platform, and the second gear is driven by the second gear to rotate, and the second connecting rod and the limiting cross bar are driven synchronously to drive the connecting block up and down through the second gear, which plays a role of height adjustment during use, and can adjust the height of the recycling box according to the height requirements of use. It also has the function of when the bottom plate is folded under the drive of the connecting block, the bottom plate drives the sliding sleeve and the limiting support rod to push the slider to slide on the outer wall of the skateboard, and the bottom plate is retracted upward to allow the support column and the pulley to support downward. During use, the pulley can be used to facilitate movement, and the bottom plate is moved downward and supported downward by the support block to achieve the effect of fixing through the support block. During use, the fixation and convenient movement effects can be adjusted according to the needs of use.

[0017] The present invention provides a device for recovering and utilizing waste heat from flue gas in a thermal power plant. It has the following beneficial effects: 1. The present invention drives the slide to slide on the inner wall of the support platform through a hydraulic cylinder, drives the first gear through the slide to drive the first connecting rod to rotate under the limit of the support platform, drives the second connecting rod and the limiting cross bar through the second gear to synchronously drive the connecting block to move up and down, and achieves the effect of height adjustment during use. The height of the recycling box can be adjusted according to the height requirements of use, and when the bottom plate is folded under the drive of the connecting block, it can achieve the effect of rapid fixing during use.

[0018] 2. The present invention compresses the second spring and squeezes the cavity downward by pressing a button, and slides out from the inside of the pressing groove through the locking ring and moves backward. At this time, the first spring drives the clamping rod to slide out from the inside of the mounting shell under the limitation of the fixing ring, so that the mounting shell can be quickly taken out during use, thereby taking out the heat exchange plate for inspection and replacement.

[0019] 3. When the connecting block of the present invention drives the base plate to move, the sliding sleeve on the inner wall of the base plate slides on the supporting column, and at the same time the base plate drives the sliding sleeve and the limiting strut, and the limiting strut pushes the slider to slide on the outer wall of the slide plate. When the base plate is retracted upward, the supporting column and the pulley support downward, which facilitates movement. When the base plate moves downward, the support block supports the ground downward, which fixes the base plate. The fixed and convenient moving states can be adjusted as needed during use, thereby improving the convenience of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention; Figure 2 It is a side view schematic diagram of the support platform of the present invention; Figure 3 It is a schematic diagram of the lower side of the support platform of the present invention; Figure 4 It is a schematic side view of the bottom plate of the present invention; Figure 5 It is a side view schematic diagram of the recycling box of the present invention; Figure 6 It is a schematic diagram of the interior of the recycling box of the present invention; Figure 7 It is a schematic diagram of the interior of the casing of the present invention.

[0021] Among them, 1. support platform; 2. hydraulic cylinder; 3. slide; 4. first tooth plate; 5. first gear; 6. first connecting rod; 7. connecting block; 8. second tooth plate; 9. second gear; 10. second connecting rod; 11. limit cross bar; 12. support column; 13. slide plate; 14. slide block; 15. limit support rod; 16. sliding sleeve; 17. pulley; 18. bottom plate; 19. support block; 20. recovery box; 21. flue gas inlet pipe; 22. drain pipe; 23. flue gas outlet pipe; 24. upper cover; 25. opening and closing handle; 26. hinge; 27. mounting shell; 28. heat exchange plate; 29. ​​sleeve shell; 30. pressing groove; 31. clamping rod; 32. fixing ring; 33. first spring; 34. locking ring; 35. cavity; 36. second spring; 37. button. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0023] Please see attached Figure 1 -Attached Figure 4The embodiment of the present invention provides a device for recovering and utilizing waste heat from flue gas in a thermal power plant, including a support platform 1, a hydraulic cylinder 2 is fixedly connected to the lower surface of the support platform 1, a slide 3 is fixedly connected to the output end of the hydraulic cylinder 2, an outer wall of the slide 3 is slidably connected to the inner wall of the support platform 1, a first tooth plate 4 is fixedly connected to the left outer wall of the slide 3, a first gear 5 is meshedly connected to the outer wall of the first tooth plate 4, an outer wall of the first gear 5 is rotatably connected to the inner wall of the support platform 1, a first connecting rod 6 is fixedly connected to the outer wall of the first connecting rod 6, a connecting block 7 is rotatably connected to the inner wall of the first connecting rod 6, a second tooth plate 8 is fixedly connected to the right outer wall of the slide 3, an outer wall of the second tooth plate 8 is meshedly connected to the second gear 9, and the second gear 9 is meshedly connected to the outer wall of the second tooth plate 8. The outer wall of the second gear 9 is rotatably connected to the inner wall of the support platform 1, the outer wall of the second gear 9 is fixedly connected to the second connecting rod 10, the inner walls of the second connecting rods 10 on both sides are rotatably connected to the limiting cross bars 11, the outer wall of the second connecting rod 10 is rotatably connected to the inner wall of the connecting block 7, and a recovery component is provided on the upper surface of the support platform 1, and the recovery component is used to recover waste heat; the recovery component includes a recovery box 20, the lower surface of the recovery box 20 is fixedly connected to the upper surface of the support platform 1, the outer wall of the recovery box 20 is fixedly connected to a hinge 26, the outer wall of the hinge 26 is fixedly connected to an upper cover 24, the lower surface of the upper cover 24 is slidably connected to the upper surface of the recovery box 20, and the outer wall of the upper cover 24 is fixedly connected to an opening and closing handle 25; Specifically, the hydraulic cylinder 2 drives the slide 3 to move, and then through the meshing action of the first tooth plate 4 and the first gear 5 and the second tooth plate 8 and the second gear 9, the first connecting rod 6, the second connecting rod 10 and the connecting block 7 are driven to move, so as to adjust the height of the recovery box 20. The height of the recovery box 20 can be flexibly adjusted according to different usage scenarios and needs so as to better connect it with the flue gas exhaust pipe and improve the waste heat recovery efficiency. At the same time, the upper cover 24 can be conveniently operated through the opening and closing handle 25, which is convenient for the inspection and maintenance of the internal equipment of the recovery box 20.

[0024] Please see attached Figure 3 -Attached Figure 5 The lower surface of the connecting block 7 is fixedly connected with a base plate 18, the inner wall of the base plate 18 is fixedly connected with a sliding sleeve 16, the inner wall of the sliding sleeve 16 is slidably connected with a support column 12, and the upper surface of the support column 12 is fixedly connected to the lower surface of the support platform 1; the outer wall of the support column 12 is fixedly connected with a slide plate 13, the outer wall of the slide plate 13 is slidably connected with a slider 14, the inner wall of the slider 14 is rotatably connected with a limiting strut 15, and the outer wall of the limiting strut 15 is rotatably connected to the inner wall of the sliding sleeve 16; the lower surface of the support column 12 is fixedly connected with a pulley 17, the lower surface of the base plate 18 is fixedly connected with a support block 19, the right inner wall of the recovery box 20 is fixedly connected with a smoke inlet pipe 21, and the left inner wall of the recovery box 20 is fixedly connected with a smoke outlet pipe 23.

[0025] Specifically, the connecting block 7 drives the bottom plate 18, the bottom plate 18 drives the sliding sleeve 16, the sliding sleeve 16 slides along the support column 12, the slide plate 13 fixedly connected to the support column 12 drives the sliding block 14, the sliding block 14 drives the limiting strut 15, and the limiting strut 15 drives the sliding sleeve 16, thereby adjusting the position and supporting state of the bottom plate 18 during use, the pulley 17 on the lower surface of the support column 12 cooperates with the supporting block 19 on the lower surface of the bottom plate 18, when the bottom plate 18 moves, the device can be switched between fixed and easy-to-move states, the smoke inlet pipe 21 on the right inner wall of the recovery box 20 introduces the smoke into the recovery box 20, and the smoke outlet pipe 23 on the left inner wall of the recovery box 20 discharges the treated smoke, thereby achieving the effect of smoke transmission and treatment during use.

[0026] Please refer to the attached Figure 6 -Attached Figure 7 The lower inner wall of the recovery box 20 is fixedly connected with a drain pipe 22, the outer wall of the drain pipe 22 is slidably connected to the inner wall of the support platform 1, the inner wall of the recovery box 20 is slidably connected with a mounting shell 27, and the inner wall of the mounting shell 27 is slidably connected with a heat exchange plate 28; the outer wall of the recovery box 20 is fixedly connected with a sleeve shell 29, the inner wall of the sleeve shell 29 is slidably connected with a clamping rod 31, the inner wall of the sleeve shell 29 is provided with a pressing groove 30, and the left inner wall of the sleeve shell 29 is fixedly connected with a fixing ring 32; Specifically, the recycling box 20 drives the mounting shell 27, and the mounting shell 27 drives the heat exchange plate 28, thereby achieving the effect of heat exchange and waste heat recovery during use. The drain pipe 22 on the lower inner wall of the recycling box 20 discharges the water after heat exchange, and the drain pipe 22 slides along the inner wall of the support platform 1 to ensure smooth drainage. The sleeve 29 on the outer wall of the recycling box 20 cooperates with the clamping rod 31. When the heat exchange plate 28 needs to be inspected and replaced, the mounting shell 27 can be quickly removed by pressing the groove 30, the fixing ring 32 and other structures.

[0027] Please refer to the attached Figure 7 The outer wall of the clamping rod 31 is slidably connected to the inner wall of the fixing ring 32, the right outer wall of the fixing ring 32 is fixedly connected with the first spring 33, the right outer wall of the first spring 33 is fixedly connected with the locking ring 34, the inner wall of the first spring 33 is slidably connected to the outer wall of the clamping rod 31; a cavity 35 is provided on the upper side of the locking ring 34, the upper side of the cavity 35 is slidably connected to the inside of the pressing groove 30, and the upper surface of the cavity 35 is slidably connected to the second spring 36; the upper surface of the second spring 36 is fixedly connected with a button 37, the outer wall of the second spring 36 is slidably connected to the inner wall of the pressing groove 30, and the outer wall of the locking ring 34 is slidably connected to the inner wall of the sleeve shell 29; Specifically, the clamping rod 31 drives the fixing ring 32, the fixing ring 32 drives the first spring 33, and the first spring 33 drives the locking ring 34, thereby fixing or unlocking the mounting shell 27 during use. When the button 37 is pressed, the button 37 drives the second spring 36, the second spring 36 drives the cavity 35, and the cavity 35 drives the locking ring 34, so that the locking ring 34 slides out from the inside of the pressing groove 30 and releases the lock on the clamping rod 31, so that the mounting shell 27 can be taken out for inspection and replacement, and the locking ring 34 slides on the inner wall of the sleeve shell 29 to ensure the stability of the device structure and the smoothness of operation, and has the effect of quickly installing and disassembling the heat exchange plate 28 during use.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recovering and utilizing waste heat from flue gas in a thermal power plant, comprising a support platform (1), characterized in that: The lower surface of the support platform (1) is fixedly connected to a hydraulic cylinder (2); the output end of the hydraulic cylinder (2) is fixedly connected to a slide (3); the outer wall of the slide (3) is slidably connected to the inner wall of the support platform (1); the left outer wall of the slide (3) is fixedly connected to a first toothed plate (4); the outer wall of the first toothed plate (4) is meshingly connected to a first gear (5); the outer wall of the first gear (5) is rotatably connected to the inner wall of the support platform (1); the outer wall of the first gear (5) is fixedly connected to a first connecting rod (6); the inner wall of the first connecting rod (6) is rotatably connected to a connecting block ( 7), a second tooth plate (8) is fixedly connected to the right outer wall of the slide (3), the outer wall of the second tooth plate (8) is meshingly connected to a second gear (9), the outer wall of the second gear (9) is rotatably connected to the inner wall of the support platform (1), the outer wall of the second gear (9) is fixedly connected to a second connecting rod (10), the inner walls of the second connecting rod (10) on both sides are rotatably connected to a limiting cross bar (11), the outer wall of the second connecting rod (10) is rotatably connected to the inner wall of the connecting block (7), and a recovery component is provided on the upper surface of the support platform (1), and the recovery component is used to recover waste heat.

2. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 1, characterized in that: The recycling assembly comprises a recycling box (20), the lower surface of the recycling box (20) being fixedly connected to the upper surface of the support platform (1), the outer wall of the recycling box (20) being fixedly connected to a hinge (26), the outer wall of the hinge (26) being fixedly connected to an upper cover (24), the lower surface of the upper cover (24) being slidably connected to the upper surface of the recycling box (20), and the outer wall of the upper cover (24) being fixedly connected to an opening and closing handle (25).

3. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 2, characterized in that: The lower surface of the connection block (7) is fixedly connected to a bottom plate (18), the inner wall of the bottom plate (18) is fixedly connected to a sliding sleeve (16), the inner wall of the sliding sleeve (16) is slidably connected to a support column (12), and the upper surface of the support column (12) is fixedly connected to the lower surface of the support platform (1).

4. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 3 is characterized in that: The outer wall of the support column (12) is fixedly connected to a slide plate (13), the outer wall of the slide plate (13) is slidably connected to a slider (14), the inner wall of the slider (14) is rotatably connected to a limit support rod (15), and the outer wall of the limit support rod (15) is rotatably connected to the inner wall of the sliding sleeve (16).

5. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 3 is characterized in that: The lower surface of the support column (12) is fixedly connected to a pulley (17), the lower surface of the bottom plate (18) is fixedly connected to a support block (19), the right inner wall of the recovery box (20) is fixedly connected to a smoke inlet pipe (21), and the left inner wall of the recovery box (20) is fixedly connected to a smoke outlet pipe (23).

6. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 5, characterized in that: A drainage pipe (22) is fixedly connected to the lower inner wall of the recovery box (20), the outer wall of the drainage pipe (22) is slidably connected to the inner wall of the support platform (1), the inner wall of the recovery box (20) is slidably connected to a mounting shell (27), and the inner wall of the mounting shell (27) is slidably connected to a heat exchange plate (28).

7. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 5, characterized in that: The outer wall of the recycling box (20) is fixedly connected to a sleeve shell (29), the inner wall of the sleeve shell (29) is slidably connected to a clamping rod (31), the inner wall of the sleeve shell (29) is provided with a pressing groove (30), and the left inner wall of the sleeve shell (29) is fixedly connected to a fixing ring (32).

8. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 7, characterized in that: The outer wall of the clamping rod (31) is slidably connected to the inner wall of the fixing ring (32); the right outer wall of the fixing ring (32) is fixedly connected to a first spring (33); the right outer wall of the first spring (33) is fixedly connected to a locking ring (34); and the inner wall of the first spring (33) is slidably connected to the outer wall of the clamping rod (31).

9. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 8, characterized in that: A cavity (35) is provided on the upper side of the lock ring (34), the upper side of the cavity (35) is slidably connected to the inside of the pressing groove (30), and a second spring (36) is slidably connected to the upper surface of the cavity (35).

10. The device for recovering and utilizing waste heat from flue gas in a thermal power plant according to claim 9, characterized in that: A button (37) is fixedly connected to the upper surface of the second spring (36), the outer wall of the second spring (36) is slidably connected to the inner wall of the pressing groove (30), and the outer wall of the locking ring (34) is slidably connected to the inner wall of the sleeve (29).

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