Adaptive flow line type flue and air duct system for thermal power plant

Abstract

The application discloses a self-adaptive flow line type flue and air duct system for thermal power plants, which comprises a smoke leading pipe, a smoke exhaust pipe and a processing box, wherein the processing box is arranged between the smoke leading pipe and the smoke exhaust pipe, and relates to the technical field of flow line type flue and air ducts. The self-adaptive flow line type flue and air duct system for thermal power plants is characterized in that a dust cleaning mechanism, a self-cleaning heat exchange mechanism and an intermittent dust storage mechanism are arranged between the processing box and a dust storage box. During the smoke exhaust process of the device, the dust cleaning mechanism, the self-cleaning heat exchange mechanism and the intermittent dust storage mechanism are cooperatively matched to clean the filter surface of the composite filter screen plate and the heat exchange pipe wall of the integrated heat exchange pipe bundle on the basis of filtering and exhaust smoke and heat energy exchange recycling, so that the filtering effect of the composite filter screen plate and the heat exchange effect of the integrated heat exchange pipe bundle are ensured. In addition, the intermittent dust storage mechanism is cooperatively matched with the composite filter cover to guide and store the scraped dust at the same time of the above cleaning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of streamlined smoke and air ducts, in particular to a self-adaptive streamlined smoke and air duct system for thermal power plants. BACKGROUND

[0002] Streamlining is a kind of external shape of an object, usually showing a smooth and regular surface without large fluctuations and sharp corners. The fluid on the surface of the streamlined object mainly shows laminar flow, with little or no turbulent flow, which ensures that the object receives less resistance. Streamlining can be understood as the air around the object moving around the object, such as the high-rise smoke exhaust pipe in thermal power plants. In order to avoid the influence of wind resistance on the pipe at high altitudes, a streamlined smoke exhaust pipe device is usually used for smoke exhaust work.

[0003] The streamlined smoke exhaust pipe device reduces wind resistance, but inevitably has deficiencies in actual use, such as lack of ash cleaning mechanism in the device, which leads to the problem that the filter surface of the dust filtering mechanism in the device will be covered with more dust, causing poor ventilation and rapid decline in filtering effect. In order to avoid such problems, a self-adaptive streamlined smoke and air duct system for thermal power plants is proposed to solve the existing problems. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a self-adaptive streamlined smoke and air duct system for thermal power plants, which solves the problem of poor ventilation of the filter surface of the dust filtering mechanism in the device due to more dust covering.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: a self-adaptive streamlined smoke and air duct system for thermal power plants, comprising a smoke inlet pipe, a smoke exhaust pipe and a treatment box, the treatment box is arranged between the smoke inlet pipe and the smoke exhaust pipe, and the two sides of the treatment box are respectively connected with the opposite ends of the smoke inlet pipe and the smoke exhaust pipe, the inside of the treatment box is provided with a composite filter screen plate through bolt installation, the inside of the treatment box is provided with a wind cover through bolt installation, the bottom of the treatment box is provided with a dust storage box, the inside of the dust storage box is provided with a composite filter cover through bolt installation, the inside of the treatment box is provided with a dust cleaning mechanism matched with the composite filter screen plate, the inside of the treatment box and located on one side of the composite filter screen plate is provided with a self-cleaning heat exchange mechanism, and the inside of the treatment box is provided with an intermittent dust storage mechanism.

[0006] Preferably, the ash cleaning mechanism comprises a double-cone protective box, the double-cone protective box is fixedly arranged at the rear side of the inner cavity of the treatment box through a support, a first rotating shaft is rotatably arranged at one side of the inner cavity of the double-cone protective box through a bearing, one end of the first rotating shaft extends to one side of the composite filter screen plate by penetrating the double-cone protective box and the composite filter screen plate in sequence, a scraper is fixedly connected to the surface of the first rotating shaft and located at the side of the composite filter screen plate, a scraping strip matched with the air cover is fixedly connected to one side of the scraper, a driving motor is fixedly connected to the top of the treatment box through a support, a second rotating shaft is fixedly connected to the output shaft of the driving motor through a shaft coupling, one end of the second rotating shaft extends to the inside of the double-cone protective box by penetrating the treatment box and the double-cone protective box in sequence, a bevel gear is fixedly connected to the surface of the second rotating shaft and the first rotating shaft, and the two bevel gears are meshed with each other.

[0007] Preferably, the self-cleaning heat exchange mechanism comprises an integrated heat exchange tube bundle, the integrated heat exchange tube bundle is fixedly arranged in the inside of the treatment box, and the two ends of the integrated heat exchange tube bundle extend outward from the front side and the rear side of the treatment box respectively, a scraping integrated frame is slidably connected to the surface of the integrated heat exchange tube bundle and located in the inside of the treatment box, arc-shaped convex plates are fixedly connected to the front side and the rear side in the inner cavity of the scraping integrated frame, and an extrusion sleeve matched with the arc-shaped convex plates is rotatably arranged on the surface of the scraping strip through a bearing.

[0008] Preferably, the intermittent ash storage mechanism comprises a fitting groove, the fitting groove is formed in the bottom of the inner cavity of the treatment box, and a plurality of fitting grooves are equidistantly formed, a mounting frame is slidably arranged in the inside of the ash storage box, a plurality of plugging plates matched with the fitting grooves are fixedly connected to the top of the mounting frame through supports, the top of the plugging plate located at the most front side and the most rear side is fixedly connected with an inclined rod, and the two inclined rods are oppositely arranged, and a pressing rod matched with the inclined rod is fixedly connected to the front side and the rear side of the bottom of the scraping integrated frame.

[0009] Preferably, the front side and the rear side of the inner cavity of the ash storage box are fixedly connected with a limiting sleeve through a support, a limiting rod is slidably connected in the inside of the limiting sleeve, and the top end of the limiting rod is fixedly connected with 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 communicated 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 through bolts.

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

[0014] Advantages

[0015] The application provides a self-adaptive thermal power plant streamline smoke and air duct system.

[0016] (1) The self-adaptive thermal power plant streamline smoke and air duct system 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, so that, during smoke exhaust, the dust cleaning mechanism, the self-cleaning heat exchange mechanism and the intermittent dust storage mechanism can be cooperated to clean the filter surface of the composite filter screen and the heat exchange pipe wall of the integrated heat exchange pipe bundle on the basis of filter smoke exhaust and heat energy exchange recovery and use, so as to ensure the filtering effect of the composite filter screen and the heat exchange effect of the integrated heat exchange pipe bundle, and the intermittent dust storage mechanism and the composite filter cover can be cooperated to guide and store the scraped dust at the same time.

[0017] (2) The self-adaptive thermal power plant streamline smoke and air duct system is provided with a streamline double-cone-shaped protective box, so that the double-cone-shaped protective box can reduce the discharge blockage of filtered smoke on the basis of protecting the bevel gear engagement through the unique streamline outer surface.

[0018] (3) The self-adaptive thermal power plant streamline smoke and air duct system is provided with an extrusion sleeve rotatingly arranged on the surface of the scraping strip, so that the extrusion sleeve can further reduce the friction resistance between the extrusion sleeve and the arc-shaped convex plate through the rotating effect of the extrusion sleeve during extrusion cooperation with the arc-shaped convex plate.

[0019] (4) The self-adaptive thermal power plant streamline smoke and air duct system is provided with a bottom plate installed on the bottom of the dust storage box through bolts and a composite filter cover installed in the dust storage box, so that, after the composite filter cover stores a large amount of dust, the bottom plate and the composite filter cover can be disassembled through the bolts, and the dust stored in the composite filter cover can be regularly treated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an external structure schematic view of the application;

[0021] Figure 2 It is a sectional view of the processing box structure of the application;

[0022] Figure 3 It is a side view of the internal structure of the processing box of the application;

[0023] Figure 4 It is a schematic view of the dust cleaning mechanism structure of the application;

[0024] Figure 5 It is the side view of the ash scraping integrated frame structure of the application;

[0025] Figure 6 It is the schematic view of the intermittent ash storage mechanism structure of the application;

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

[0027] Figure 8 It is the schematic view of the shielding top plate structure of the application.

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

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application.

[0030] Please refer to Figures 1-8 The application provides a technical solution: a self-adaptive thermal power plant streamline smoke and air duct system, which comprises a smoke inlet pipe 1, a smoke outlet pipe 2 and a treatment box 3. The treatment box 3 is arranged between the smoke inlet pipe 1 and the smoke outlet pipe 2, and the two sides of the treatment box 3 are respectively connected in communication with opposite ends of the smoke inlet pipe 1 and the smoke outlet pipe 2. A composite filter screen 4 is arranged in the treatment box 3 through bolt mounting. A wind cover 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 arranged in the ash storage box 9 through bolt mounting. An exhaust branch pipe 11 is connected in communication between one side of the ash storage box 9 and the bottom of the smoke outlet pipe 2. A bottom plate 12 is arranged on the bottom of the ash storage box 9 through bolt mounting. As a detailed description, the composite filter screen 4 is formed by stacking a dust filter plate and an activated carbon filter plate. The composite filter cover 10 is provided with two layers of filter cartridges. The inner layer is a filter cartridge surrounded by the dust 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 avoid the filter surface of the composite filter screen plate 4 being covered by dust, a dust removal mechanism 6 matched with the composite filter screen plate 4 is installed in the inside of the treatment box 3. The dust removal mechanism 6 comprises a double-cone protective box 601, which is fixedly arranged at the rear side of the inner cavity of the treatment box 3 through a support. A first rotating shaft 602 is rotatably arranged at one side of the inner cavity of the double-cone protective box 601 through a bearing, and one end of the first rotating shaft 602 extends to one side of the composite filter screen plate 4 by penetrating the double-cone protective box 601 and the composite filter screen plate 4 in sequence. A scraper 603 is fixedly connected to the surface of the first rotating shaft 602 and located at the side of the composite filter screen plate 4. A scraping strip 604 matched with the wind cover 5 is fixedly connected to one side of the scraper 603. A driving motor 605 is fixedly connected to the top of the treatment box 3 through a support, and the output shaft of the driving motor 605 is fixedly connected with a second rotating shaft 606 through a shaft coupling. One end of the second rotating shaft 606 extends to the inside of the double-cone protective box 601 by penetrating the treatment box 3 and the double-cone protective box 601 in sequence. The surfaces of the second rotating shaft 606 and the first rotating shaft 602 are both fixedly connected with bevel gears 607, and the two bevel gears 607 are meshed with each other.

[0032] Among them: in order to facilitate the daily protection of the driving motor 605, a plurality of support vertical rods 13 are fixedly connected to the top of the treatment box 3. A shielding top plate 14 is fixedly connected to the top of the plurality of support vertical rods 13. A plurality of arc flow guide grooves 15 are formed in the top of the shielding top plate 14, and the plurality of arc flow guide grooves 15 are equidistantly arranged.

[0033] As a preferred embodiment: in order to avoid the dust covering affecting the heat exchange effect of the integrated heat exchange tube bundle 701, a self-cleaning heat exchange mechanism 7 is arranged at one side of the composite filter screen plate 4 in the inside of the treatment box 3. The self-cleaning heat exchange mechanism 7 comprises an integrated heat exchange tube bundle 701, which is fixedly arranged in the inside of 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. A dust scraping integrated frame 702 is slidingly connected to the surface of the integrated heat exchange tube bundle 701 and located in the inside of the treatment box 3. Arc-shaped convex plates 703 are fixedly connected to the front side and the rear side of the inner cavity of the dust scraping integrated frame 702. An extrusion sleeve 704 matched with the arc-shaped convex plates 703 is rotatably arranged on the surface of the scraping strip 604 through a bearing.

[0034] As a preferred embodiment: in order to facilitate the intermittent guiding and storage of the scraped dust, the inner bottom of the processing box 3 is provided with an intermittent dust storage mechanism 8, the intermittent dust storage mechanism 8 comprises a matching groove 801, the matching groove 801 is opened in the bottom of the inner cavity of the processing box 3, and the matching groove 801 is equidistantly provided with a plurality of matching grooves 801, the inside of the dust storage box 9 is slidably provided with a mounting frame 802, and the top of the mounting frame 802 is fixedly connected with a plurality of blocking plates 803 matched with the matching grooves 801 through supports, the top of the blocking plates 803 located at the front and rear sides is fixedly connected with a inclined rod 804, and the two inclined rods 804 are oppositely arranged, the front side and the rear side of the bottom of the dust scraping integrated frame 702 are fixedly connected with a pressing rod 805 matched with the inclined rod 804, and the front side and the rear side of the inner cavity of the dust storage box 9 are fixedly connected with a limiting sleeve 806 through supports, the inside of the limiting sleeve 806 is slidably connected with a limiting rod 807, and the top end of the limiting rod 807 is fixedly connected with the bottom of the mounting frame 802, and the limiting rod 807 and the limiting sleeve 806 are fixedly connected with a return spring 808.

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

[0036] In use: the flue gas enters the inside of the processing box 3 along the smoke guide pipe 1, and is filtered by the composite filter screen 4 in the processing box 3 and then discharged from the smoke exhaust pipe 2, and the flue gas is used by being heat-exchanged with the refrigerant introduced by the integrated heat exchange pipe bundle 701 during the process of being transferred from the processing box 3 to the smoke exhaust pipe 2;

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

[0038] Clean the heat exchange outer wall of the integrated heat exchange pipe bundle 701: the scraping strip 604 rotates to drive the extrusion sleeve 704 to move in a circle at the same time, the extrusion sleeve 704 moves in a circle to continuously extrude the two arc-shaped flanges 703 in turn, so as to drive the arc-shaped flanges 703 to drive the dust scraping integrated frame 702 to reciprocate, and the reciprocating of the dust scraping integrated frame 702 can scrape the dust accumulated on the surface of the integrated heat exchange pipe bundle 701;

[0039] Intermittent collection of falling dust: the dust scraping integrated frame 702 reciprocates while driving the downward rod 805 to reciprocate, the reciprocation of the downward rod 805 presses the inclined rod 804, the inclined rod 804 is forced to drive the blocking plate 803 to descend, when the blocking plate 803 descends, the dust scraped by the scraper 603, the scraper strip 604 and the dust scraping integrated frame 702 will be blown into the inside of the composite filter cover 10 in the dust storage box 9 along with the ventilation potential at the bottom of the processing box 3, and the flue gas filtered by the composite filter cover 10 will be collected through the exhaust branch pipe 11 and then discharged into the exhaust pipe 2.

Claims

1. An adaptive streamlined flue gas duct system for a thermal power plant, comprising a flue gas inlet pipe (1), a flue gas outlet pipe (2), and a treatment box (3), wherein the treatment box (3) is disposed between the flue gas inlet pipe (1) and the flue gas outlet pipe (2), and both sides of the treatment box (3) are respectively connected to the opposite ends of the flue gas inlet pipe (1) and the flue gas outlet pipe (2), characterized in that: The processing box (3) is fitted with a composite filter plate (4) by bolts. A fan hood (5) is fixedly connected to one side of the inner cavity of the processing box (3). A ash storage box (9) is fixedly connected to the bottom of the processing box (3). A composite filter cover (10) is fitted with bolts inside the ash storage box (9). A dust removal mechanism (6) matching the composite filter plate (4) is installed inside the processing box (3). A self-cleaning heat exchange mechanism (7) is provided inside the processing box (3) and on one side of the composite filter plate (4). An intermittent ash storage mechanism (8) is provided at the bottom of the inner cavity of the processing box (3). The dust removal mechanism (6) includes a double-cone protective box (601). The double-cone protective box (601) is fixedly installed on the rear side of the inner cavity of the treatment box (3) by a bracket. A first rotating shaft (602) is rotatably installed on one side of the inner cavity of the double-cone protective box (601) through a bearing. One end of the first rotating shaft (602) passes through the double-cone protective box (601) and the composite filter plate (4) in sequence and extends to one side of the composite filter plate (4). A scraper (603) is fixedly connected to the surface of the first rotating shaft (602) and the side of the composite filter plate (4). A scraper strip (604) for use with the air hood (5) is fixedly connected to one side of the scraper (603). The self-cleaning heat exchange mechanism (7) includes an integrated heat exchange tube bundle (701), which is fixedly installed inside the processing box (3). 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. A slidable scraper integrated frame (702) is connected to the surface of the integrated heat exchange tube bundle (701) and inside the processing box (3). An arc-shaped convex plate (703) is fixedly connected to the front and rear sides of the inner cavity of the scraper integrated frame (702). The surface of the scraper (604) is rotatably provided with an extrusion sleeve (704) that is matched with the arc-shaped convex plate (703) through a bearing. The intermittent ash storage mechanism (8) includes a fitting groove (801), which is located at the bottom of the inner cavity of the processing box (3). Several fitting grooves (801) are equally spaced. An installation frame (802) is slidably installed inside the ash storage box (9). Several sealing plates (803) that are used in conjunction with the fitting grooves (801) are fixedly connected to the top of the installation frame (802) through a bracket. The top 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 pressing rods (805) that are used in conjunction with the inclined rods (804).

2. The adaptive streamlined flue gas 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 drive motor (605) by a bracket, and the output shaft of the drive motor (605) is fixedly connected to a second rotating shaft (606) by 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 into the interior of the double conical protective box (601). The surfaces of the second rotating shaft (606) and the first rotating shaft (602) are both fixedly connected to bevel gears (607), and the two bevel gears (607) mesh with each other.

3. The adaptive streamlined flue gas duct system for thermal power plants according to claim 2, 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) by the bracket. The limiting sleeve (806) is slidably connected to the limiting rod (807), and the top of the limiting rod (807) is fixedly connected to the bottom of the mounting bracket (802).

4. The adaptive streamlined flue gas duct system for thermal power plants according to claim 3, characterized in that: A return spring (808) is fixedly connected between the limiting rod (807) and the limiting sleeve (806).

5. The adaptive streamlined flue gas 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 exhaust pipe (2).

6. The adaptive streamlined flue gas duct system for thermal power plants according to claim 1, characterized in that: The bottom of the ash storage box (9) is bolted to a base plate (12).

7. The adaptive streamlined flue gas duct system for thermal power plants according to claim 1, characterized in that: The top of the processing box (3) is fixedly connected to several support poles (13), and the top of several support poles (13) is fixedly connected to a shielding top plate (14). The top of the shielding top plate (14) is provided with several arc-shaped guide grooves (15).

8. The adaptive streamlined flue gas duct system for thermal power plants according to claim 7, characterized in that: Several of the arc-shaped guide grooves (15) are arranged at equal intervals.

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