Self-adaptive thermal power plant streamline flue gas duct system

Abstract

The invention discloses a self-adaptive thermal power plant streamline smoke and air duct system which comprises a smoke guide pipe, a smoke exhaust pipe and a treatment box, the treatment box is arranged between the smoke guide pipe and the smoke exhaust pipe, and the self-adaptive thermal power plant streamline smoke and air duct system relates to the technical field of streamline smoke and air ducts. According to the self-adaptive streamline smoke and air duct system for the thermal power plant, the ash removal mechanism, the self-cleaning heat exchange mechanism and the intermittent ash storage mechanism are arranged between the treatment box and the ash storage box, so that in the smoke exhaust process of the device, the ash removal mechanism, the self-cleaning heat exchange mechanism and the intermittent ash storage mechanism are coordinated and matched, and the smoke exhaust efficiency is improved; on the basis of filtering discharged smoke and exchanging and recycling heat energy, the filtering face of the composite filtering net plate and the heat exchange pipe wall of the integrated heat exchange pipe bundle are synchronously cleaned, the filtering effect of the composite filtering net plate and the heat exchange effect of a pipe body of the integrated heat exchange pipe bundle are guaranteed, and the dust removal efficiency is improved through synchronous cooperation of the intermittent dust storage mechanism and the composite filtering cover. And the scraped accumulated dust is intermittently guided and stored during cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of streamlined smoke and air ducts, in particular to a self-adaptive streamlined smoke and air duct system for a thermal power plant. Background Art

[0002] Streamline is an external shape of an object, usually showing a smooth and regular surface without large undulations and sharp edges. The fluid on the surface of a streamlined object mainly shows laminar flow, with little or no turbulence, which ensures that the object is subject to less resistance. Streamline can be understood as the surrounding air moving around the object, such as the towering smoke exhaust pipe in a thermal power plant. In order to avoid the influence of high wind resistance on the pipe, streamlined smoke exhaust pipe devices are often used for smoke exhaust.

[0003] The streamlined smoke exhaust pipe device can reduce wind resistance, but it is inevitable that there are still some shortcomings in the actual use process. For example, the device lacks a cleaning mechanism, which leads to poor ventilation of the dust filtering mechanism in the device due to a lot of dust covering the filtering surface, resulting in a rapid decrease in the filtering effect. In order to avoid such problems, an adaptive streamlined smoke and air duct system for thermal power plants is proposed to solve the existing problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an adaptive streamlined smoke and air duct system for a thermal power plant, which solves the problem that the device lacks a dust cleaning mechanism, resulting in poor ventilation due to the filter surface of the dust filter mechanism in the device being covered with a lot of dust.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adaptive streamlined smoke and air duct system for a thermal power plant, comprising a smoke duct, a smoke exhaust duct and a treatment box, wherein the treatment box is arranged between the smoke duct and the smoke exhaust duct, and the two sides of the treatment box are respectively connected with the opposite ends of the smoke duct and the smoke exhaust duct, a composite filter screen plate is installed inside the treatment box by bolts, a wind hood is fixedly connected to one side of the inner cavity of the treatment box, an ash storage box is fixedly connected to the bottom of the treatment box, a composite filter cover is installed inside the ash storage box by bolts, a ash cleaning mechanism used in combination with the composite filter screen plate is installed inside the treatment box, a self-cleaning heat exchange mechanism is provided inside the treatment box and on one side of the composite filter screen plate, and an intermittent ash storage mechanism is provided at the bottom of the inner cavity of the treatment box.

[0006] Preferably, the cleaning mechanism includes a double-conical protection box, which is fixedly arranged on the rear side of the inner cavity of the processing box by a bracket, a first rotating shaft is rotatably arranged on one side of the inner cavity of the double-conical protection box through a bearing, and one end of the first rotating shaft sequentially penetrates the double-conical protection box and the composite filter screen and extends to one side of the composite filter screen, a scraper is fixedly connected to the surface of the first rotating shaft and located on the side of the composite filter screen, and a scraper strip used in conjunction with the wind hood is fixedly connected to one side of the scraper, a driving motor is fixedly connected to the top of the processing box by a bracket, and the output shaft of the driving motor is fixedly connected to the second rotating shaft by a coupling, one end of the second rotating shaft sequentially penetrates the processing box and the double-conical protection box and extends to the interior of the double-conical protection box, and the surfaces of the second rotating shaft and the first rotating shaft are fixedly connected with bevel gears, and the two bevel gears are meshed with each other.

[0007] Preferably, the self-cleaning heat exchange mechanism includes an integrated heat exchange tube bundle, which is fixedly arranged inside the treatment box, and the two ends of the integrated heat exchange tube bundle extend outward from the front and rear sides of the treatment box respectively, and the surface of the integrated heat exchange tube bundle is slidably connected with a scraper integrated frame located inside the treatment box, and the front and rear sides of the inner cavity of the scraper integrated frame are fixedly connected with arc-shaped convex plates, and the surface of the scraper strip is rotatably provided with an extrusion sleeve used in conjunction with the arc-shaped convex plate through a bearing.

[0008] Preferably, the intermittent ash storage mechanism includes a fitting groove, which is opened at the bottom of the inner cavity of the processing box, and a plurality of fitting grooves are equidistantly provided. A mounting frame is slidingly arranged inside the ash storage box, and a plurality of sealing plates matched with the fitting grooves are fixedly connected to the top of the mounting frame through a bracket. The tops of the sealing plates located at the front and rear sides are fixedly connected with inclined rods, and the two inclined rods are arranged in opposite directions. The front and rear sides of the bottom of the scraping integrated frame are fixedly connected with downward pressure rods matched with the inclined rods.

[0009] Preferably, the front and rear sides of the inner cavity of the ash storage box are fixedly connected to a limiting sleeve via a bracket, the interior of the limiting sleeve is slidably connected to a limiting rod, and the top end of the limiting rod is fixedly connected to the bottom of the mounting frame.

[0010] Preferably, a return spring is fixedly connected between the limiting rod and the limiting sleeve.

[0011] Preferably, an exhaust branch pipe is connected between one side of the ash storage box and the bottom of the smoke exhaust pipe.

[0012] Preferably, a bottom plate is mounted on the bottom of the ash storage box via bolts.

[0013] Preferably, the top of the processing box is fixedly connected to a plurality of supporting uprights, the tops of the plurality of supporting uprights are commonly fixedly connected to a shielding top plate, the top of the shielding top plate is provided with a plurality of arc-shaped guide grooves, and the plurality of arc-shaped guide grooves are equidistantly arranged.

[0014] Beneficial Effects

[0015] The present invention provides a streamlined smoke and air duct system for an adaptive thermal power plant. Compared with the existing technology, it has the following beneficial effects:

[0016] (1) The streamlined smoke and air duct system of the adaptive thermal power plant is provided with a dust cleaning mechanism, a self-cleaning heat exchange mechanism and an intermittent dust storage mechanism between the processing box and the dust storage box. In the process of smoke exhaust of the device, the dust cleaning mechanism, the self-cleaning heat exchange mechanism and the intermittent dust storage mechanism can be coordinated and cooperated. On the basis of filtering smoke exhaust and heat energy exchange and recovery, the filtering surface of the composite filter screen plate and the heat exchange tube wall of the integrated heat exchange tube bundle can be cleaned simultaneously, thereby ensuring the filtering effect of the composite filter screen plate and the heat exchange effect of the tube body of the integrated heat exchange tube bundle. In addition, the intermittent dust storage mechanism and the composite filter cover can be coordinated and guided and stored intermittently during the above cleaning.

[0017] (2) The adaptive streamlined smoke and air duct system of the thermal power plant adopts a streamlined double-conical protection box, which can not only protect the meshing of the bevel gears, but also reduce the emission obstruction of the filtered smoke through the unique streamlined outer surface.

[0018] (3) The streamlined smoke and air duct system of the adaptive thermal power plant is configured such that the extrusion sleeve is rotatably arranged on the surface of the scraper strip so that the friction resistance between the extrusion sleeve and the arc-shaped convex plate can be further reduced by the rotation effect of the extrusion sleeve during the extrusion matching with the arc-shaped convex plate.

[0019] (4) The streamlined smoke and air duct system of the adaptive thermal power plant uses bolts to install a bottom plate at the bottom of the ash storage box and a composite filter cover inside the ash storage box. When a large amount of ash is stored in the composite filter cover, the bottom plate and the composite filter cover can be disassembled by bolts, which is convenient for regular treatment of the ash stored in the composite filter cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0021] Figure 2 It is a cross-sectional view of the processing box structure of the present invention;

[0022] Figure 3 A side view of the internal structure of the processing box of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the dust cleaning mechanism of the present invention;

[0024] Figure 5 It is a side view of the scraping integrated frame structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the intermittent ash storage mechanism structure of the present invention;

[0026] Figure 7 It is an expanded view of the internal structure of the limiting sleeve of the present invention;

[0027] Figure 8 It is a schematic diagram of the protective top plate structure of the present invention.

[0028] In the figure: 1, smoke duct; 2, smoke exhaust pipe; 3, treatment box; 4, composite filter screen; 5, wind hood; 6, dust cleaning mechanism; 601, double cone protection box; 602, first rotating shaft; 603, scraper; 604, scraper bar; 605, drive motor; 606, second rotating shaft; 607, bevel gear; 7, self-cleaning heat exchange mechanism; 701, integrated heat exchange tube bundle; 702, dust scraping integrated frame; 703, arc shaped convex plate; 704, extrusion sleeve; 8, intermittent ash storage mechanism; 801, fitting groove; 802, mounting frame; 803, blocking plate; 804, inclined rod; 805, lower pressure rod; 806, limiting sleeve; 807, limiting rod; 808, reset spring; 9, ash storage box; 10, composite filter cover; 11, exhaust branch pipe; 12, bottom plate; 13, supporting vertical pole; 14, shielding top plate; 15, arc-shaped guide groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1-8 The present invention provides a technical solution: a streamlined smoke and air duct system for an adaptive thermal power plant, comprising a smoke duct 1, a smoke exhaust duct 2 and a treatment box 3, wherein the treatment box 3 is arranged between the smoke duct 1 and the smoke exhaust duct 2, and the two sides of the treatment box 3 are respectively connected with the opposite ends of the smoke duct 1 and the smoke exhaust duct 2, a composite filter screen plate 4 is installed inside the treatment box 3 by bolts, a wind hood 5 is fixedly connected to one side of the inner cavity of the treatment box 3, an ash storage box 9 is fixedly connected to the bottom of the treatment box 3, a composite filter cover 10 is installed inside the ash storage box 9 by bolts, an exhaust branch pipe 11 is connected between one side of the ash storage box 9 and the bottom of the smoke exhaust duct 2, and a bottom plate 12 is installed at the bottom of the ash storage box 9 by bolts. As a detailed description: the composite filter screen plate 4 is formed by superimposing a dust removal filter plate and an activated carbon filter plate, and the composite filter cover 10 is provided with two layers of filter cartridges, the inner layer is provided as a filter cartridge surrounded by the dust removal filter plate, and the outer layer is a filter cartridge surrounded by the activated carbon filter plate.

[0031] As a preferred embodiment: in order to prevent the filter surface of the composite filter screen plate 4 from being covered with dust, a dust cleaning mechanism 6 used in conjunction with the composite filter screen plate 4 is installed inside the processing box 3, and the dust cleaning mechanism 6 includes a double-conical protective box 601, and the double-conical protective box 601 is fixedly arranged on the rear side of the inner cavity of the processing box 3 through a bracket, and a first rotating shaft 602 is rotatably arranged on one side of the inner cavity of the double-conical protective box 601 through a bearing, and one end of the first rotating shaft 602 successively penetrates the double-conical protective box 601 and the composite filter screen plate 4 and extends to one side of the composite filter screen plate 4, and the surface of the first rotating shaft 602 is located A scraper 603 is fixedly connected to the side of the composite filter screen plate 4, and a scraper strip 604 used in conjunction with the wind hood 5 is fixedly connected to one side of the scraper 603. A drive motor 605 is fixedly connected to the top of the treatment box 3 through a bracket, and the output shaft of the drive motor 605 is fixedly connected to a second rotating shaft 606 through a coupling. One end of the second rotating shaft 606 passes through the treatment box 3 and the double-conical protective box 601 in sequence and extends to the inside of the double-conical protective box 601. The surfaces of the second rotating shaft 606 and the first rotating shaft 602 are fixedly connected with bevel gears 607, and the two bevel gears 607 are meshed with each other.

[0032] Among them: in order to facilitate daily protection of the driving motor 605, a plurality of supporting uprights 13 are fixedly connected to the top of the processing box 3, and a shielding top plate 14 is fixedly connected to the top of the plurality of supporting uprights 13. A plurality of arc-shaped guide grooves 15 are opened on the top of the shielding top plate 14, and the plurality of arc-shaped guide grooves 15 are equidistantly arranged.

[0033] As a preferred embodiment: to avoid dust covering and affecting the heat exchange effect of the integrated heat exchange tube bundle 701, a self-cleaning heat exchange mechanism 7 is provided inside the processing box 3 and on one side of the composite filter screen plate 4. The self-cleaning heat exchange mechanism 7 includes an integrated heat exchange tube bundle 701. The integrated heat exchange tube bundle 701 is fixedly arranged inside the processing box 3, and the two ends of the integrated heat exchange tube bundle 701 extend outward from the front and rear sides of the processing box 3 respectively. The surface of the integrated heat exchange tube bundle 701 and the interior of the processing box 3 are slidably connected with a dust scraping integrated frame 702. The front and rear sides of the inner cavity of the dust scraping integrated frame 702 are fixedly connected with arc-shaped convex plates 703. The surface of the scraper strip 604 is provided with an extrusion sleeve 704 used in conjunction with the arc-shaped convex plate 703 through a bearing rotation.

[0034] As a preferred embodiment: in order to facilitate the intermittent guidance and storage of the scraped dust, an intermittent dust storage mechanism 8 is provided at the bottom of the inner cavity of the processing box 3, and the intermittent dust storage mechanism 8 includes a fitting groove 801, the fitting groove 801 is opened at the bottom of the inner cavity of the processing box 3, and a plurality of the fitting grooves 801 are opened at equal intervals, and a mounting frame 802 is slidingly provided inside the dust storage box 9, and a plurality of sealing plates 803 used in conjunction with the fitting grooves 801 are fixedly connected to the top of the mounting frame 802 through a bracket, and the sealing plates 803 located at the front and rear sides The top of each frame is fixedly connected with an inclined rod 804, and the two inclined rods 804 are set in opposite directions. The front and rear sides of the bottom of the scraper integrated frame 702 are fixedly connected with a downward pressure rod 805 used in conjunction with the inclined rod 804. The front and rear sides of the inner cavity of the ash storage box 9 are fixedly connected with a limiting sleeve 806 through a bracket. The internal sliding connection of the limiting sleeve 806 is connected to the limiting rod 807, and the top of the limiting rod 807 is fixedly connected to the bottom of the mounting frame 802, and a return spring 808 is fixedly connected between the limiting rod 807 and the limiting sleeve 806.

[0035] Before use: connect the air inlet end of the smoke pipe 1 to the smoke outlet, and then use a bracket to fix the ash storage box 9 to the ground;

[0036] When in use: the smoke enters the interior of the processing box 3 along the smoke duct 1, and is filtered by the composite filter screen 4 inside the processing box 3 and then discharged from the exhaust pipe 2. During the process of the smoke passing through the processing box 3 and transferring to the exhaust pipe 2, the refrigerant is introduced on site with the help of the integrated heat exchange tube bundle 701 for heat exchange;

[0037] Clean the filter surface of the composite filter screen 4: the drive motor 605 is started while the composite filter screen 4 is filtering, and the drive motor 605 drives the second rotating shaft 606 to rotate, and the second rotating shaft 606 drives the meshing of two bevel gears 607 to drive the first rotating shaft 602 to drive the scraper 603 and the scraper strip 604 to rotate, and the scraper 603 rotates to scrape off the dust on the filter surface of the composite filter screen 4, and the scraper strip 604 rotates to scrape off the dust on the outer wall of the wind shield 5;

[0038] Cleaning the heat exchange outer wall of the integrated heat exchange tube bundle 701: The scraper strip 604 rotates while synchronously driving the extrusion sleeve 704 to move in a circular motion. The extrusion sleeve 704 moves in a circular motion and continuously squeezes the two arc-shaped convex plates 703 in sequence, thereby prompting the arc-shaped convex plates 703 to drive the dust scraping integrated frame 702 to move back and forth. The dust scraping integrated frame 702 moves back and forth to scrape the dust accumulated on the surface of the integrated heat exchange tube bundle 701;

[0039] Intermittent collection of fallen ash: the reciprocating movement of the ash scraping integrated frame 702 drives the reciprocating movement of the lower pressure rod 805 at the same time. The reciprocating movement of the lower pressure rod 805 will press the inclined rod 804, and the inclined rod 804 is forced to drive the sealing plate 803 to descend. When the sealing plate 803 descends, the dust scraped by the scraper 603, the scraper strip 604 and the ash scraping integrated frame 702 will be accompanied by the ventilation potential energy at the bottom of the processing box 3, and the fallen ash will be concentrated and blown into the interior of the composite filter cover 10 in the ash storage box 9. The smoke filtered by the composite filter cover 10 will be collected into the interior of the smoke exhaust pipe 2 through the exhaust branch pipe 11 and discharged together.

Claims

1. An adaptive streamlined smoke and air duct system for a thermal power plant, comprising a smoke duct (1), a smoke exhaust duct (2) and a processing box (3), wherein the processing box (3) is arranged between the smoke duct (1) and the smoke exhaust duct (2), and two sides of the processing box (3) are respectively connected to the opposite ends of the smoke duct (1) and the smoke exhaust duct (2), characterized in that: A composite filter screen plate (4) is installed inside the processing box (3) by means of bolts, a wind cover (5) is fixedly connected to one side of the inner cavity of the processing box (3), a dust storage box (9) is fixedly connected to the bottom of the processing box (3), a composite filter cover (10) is installed inside the dust storage box (9) by means of bolts, a dust cleaning mechanism (6) used in conjunction with the composite filter screen plate (4) is installed inside the processing box (3), a self-cleaning heat exchange mechanism (7) is arranged inside the processing box (3) and on one side of the composite filter screen plate (4), and an intermittent dust storage mechanism (8) is arranged at the bottom of the inner cavity of the processing box (3).

2. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 1 is characterized in that: The dust cleaning mechanism (6) comprises a double-conical protection box (601), wherein the double-conical protection box (601) is fixedly arranged on the rear side of the inner cavity of the treatment box (3) via a bracket, and a first rotating shaft (602) is rotatably arranged on one side of the inner cavity of the double-conical protection box (601) via a bearing, and one end of the first rotating shaft (602) successively passes through the double-conical protection box (601) and the composite filter screen plate (4) and extends to one side of the composite filter screen plate (4), and a scraper (603) is fixedly connected to the surface of the first rotating shaft (602) and located on the side of the composite filter screen plate (4), and the scraper (603) A scraper strip (604) matched with the wind hood (5) is fixedly connected to one side, a driving motor (605) is fixedly connected to the top of the processing box (3) through a bracket, and the output shaft of the driving motor (605) is fixedly connected to a second rotating shaft (606) through a coupling, one end of the second rotating shaft (606) passes through the processing box (3) and the double-conical protective box (601) in sequence and extends to the interior of the double-conical protective box (601), and the surfaces of the second rotating shaft (606) and the first rotating shaft (602) are fixedly connected with a bevel gear (607), and the two bevel gears (607) are meshed with each other.

3. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 1, characterized in that: The self-cleaning heat exchange mechanism (7) comprises an integrated heat exchange tube bundle (701), the integrated heat exchange tube bundle (701) is fixedly arranged inside the treatment box (3), and the two ends of the integrated heat exchange tube bundle (701) extend outward from the front side and the rear side of the treatment box (3) respectively, and a scraping integrated frame (702) is slidably connected to the surface of the integrated heat exchange tube bundle (701) and located inside the treatment box (3), and the front and rear sides of the inner cavity of the scraping integrated frame (702) are fixedly connected to arc-shaped convex plates (703), and the surface of the scraping strip (604) is rotatably provided with an extrusion sleeve (704) used in conjunction with the arc-shaped convex plate (703) through a bearing.

4. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 1, characterized in that: The intermittent ash storage mechanism (8) includes a mating groove (801), which is opened at the bottom of the inner cavity of the processing box (3), and a plurality of mating grooves (801) are opened at equal intervals. A mounting frame (802) is slidably arranged inside the ash storage box (9), and a plurality of sealing plates (803) matched with the mating groove (801) are fixedly connected to the top of the mounting frame (802) through a bracket. The tops of the sealing plates (803) located at the front and rear sides are fixedly connected with inclined rods (804), and the two inclined rods (804) are arranged in opposite directions. The front and rear sides of the bottom of the ash scraping integrated frame (702) are fixedly connected with downward pressing rods (805) matched with the inclined rods (804).

5. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 4, characterized in that: The front and rear sides of the inner cavity of the ash storage box (9) are fixedly connected to the limiting sleeve (806) through a bracket, the interior of the limiting sleeve (806) is slidably connected to the limiting rod (807), and the top end of the limiting rod (807) is fixedly connected to the bottom of the mounting frame (802).

6. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 5, characterized in that: A return spring (808) is fixedly connected between the limiting rod (807) and the limiting sleeve (806).

7. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 1, characterized in that: An exhaust branch pipe (11) is connected between one side of the ash storage box (9) and the bottom of the smoke exhaust pipe (2).

8. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 1, characterized in that: The bottom of the ash storage box (9) is mounted with a bottom plate (12) via bolts.

9. The adaptive streamlined smoke and air duct system for thermal power plants according to claim 1, characterized in that: The top of the processing box (3) is fixedly connected to a plurality of supporting uprights (13), the tops of the plurality of supporting uprights (13) are commonly fixedly connected to a shielding top plate (14), and the top of the shielding top plate (14) is provided with a plurality of arc-shaped guide grooves (15).

10. The adaptive streamlined smoke and air duct system for a thermal power plant according to claim 9, characterized in that: A plurality of the arc-shaped guide grooves (15) are arranged at equal distances.

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