Outlet structure of thermal power plant boiler induced draft fan

Abstract

The utility model provides a thermal power plant boiler induced draft fan outlet structure, which relates to the technical field of thermal power plant boilers, and comprises an air outlet pipe, the two sides of the interior of the air outlet pipe are both provided with insertion blocks, the inner walls of the two insertion blocks are both provided with screw grooves, the center of the top end of the air outlet pipe is provided with an opening, a clamping block is arranged in the opening, and the air outlet pipe is provided with an air outlet. And a connecting column is rotationally connected into the clamping block. Through the arrangement of the mounting plates and the bolts, the insertion blocks can be mounted and dismounted at any time, due to the arrangement of the screw grooves in the insertion blocks, the insertion blocks are in butt joint with external devices, when different devices need to be in butt joint, only different insertion blocks need to be replaced, and therefore the screw grooves of different sizes are replaced; the two clamping columns are driven by the connecting block to be separated from the clamping holes and retracted into the inner cavity, at the moment, a user can directly move the clamping block upwards to drive the adjusting plate to move out of the air outlet pipe, the air outlet pipe is convenient to clean and maintain, and the practicability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to a thermal power plant boiler technical field especially relates to a thermal power plant boiler induced draft fan export structure. BACKGROUND

[0002] Thermal power plant as the main power production facility, in meeting the society growing demand for electricity plays a vital role. The boiler is one of the core equipment of thermal power plant, it produces high temperature and high pressure steam through burning fuel, drives steam turbine to generate electricity. In this process, the large amount of flue gas generated by the boiler needs to be discharged in time to maintain the normal operation of the boiler, and the induced draft fan is an important part of the boiler system, which is responsible for extracting the flue gas generated by the combustion in the boiler and conveying it to the subsequent treatment equipment and chimney.

[0003] At present, the outflow pipe docking structure of a thermal power plant boiler induced draft fan in the prior art is fixed, when the interfaces of the subsequent dust collector and other equipment are different, only the whole can be replaced, the practicability is poor, in addition, the adjusting plate for adjusting the outflow in the prior art cannot be assembled and disassembled, and when used for a long time, damage will occur, the whole needs to be replaced, the practicability is poor. UTILITY MODEL CONTENT

[0004] The utility model discloses a thermal power plant boiler induced draft fan outlet structure, which can solve the problems of fixed docking structure of the outflow pipe in the prior art, whole replacement when the interfaces of the subsequent dust collector and other equipment are different, and damage of the adjusting plate for adjusting the outflow when used for a long time.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a thermal power plant boiler induced draft fan outlet structure, including the outflow pipe, the inside both sides of outflow pipe are equipped with the insert block, the inner wall of two insert blocks all is equipped with the screw groove, the top center of outflow pipe is equipped with the opening, the opening is equipped with the clamping block, the clamping block is rotatably connected with the connecting column, the bottom of connecting column passes through clamping block and is fixed with the adjusting plate matched with outflow pipe, the outflow pipe is equipped with the buckle structure for clamping and limiting the clamping block.

[0006] Preferably, the buckle structure includes an inner cavity formed in the inner wall of the opening at both ends, two springs are fixed in the inner cavities, two clamping columns are fixed to the opposite ends of the springs, and two clamping columns are fixed to the opposite ends of the springs.

[0007] Preferably, the outer wall of the card column is fixed with a connecting block at both ends, one end of the two connecting blocks penetrates the air outlet pipe and is jointly fixed with a pull plate, the outer wall of the air outlet pipe is provided with a moving slot matched with the connecting block at both ends, and the opposite end of the two connecting plates is provided with a clamping hole matched with the card column.

[0008] Preferably, the top of the air outlet pipe is fixed with a support plate on both sides, the support plate is provided with a second bolt, the bottom of the second bolt is arranged in the pull plate, and the support plate is provided with two second bolt holes matched with the second bolt.

[0009] Preferably, the top of the plug is fixed with a mounting plate on both sides, the two mounting plates are fixed with the air outlet pipe through bolts, and the top of the plug is fixed with a handle.

[0010] Preferably, the top of the connecting column penetrates the clamping block and is fixed with a rotating plate, the rotating plate is provided with a first bolt, and the rotating plate, the air outlet pipe and the clamping block are provided with a plurality of first bolt holes matched with the first bolt.

[0011] Compared with the prior art, the utility model has the advantages and positive effects that;

[0012] In the utility model, through the setting of the mounting plate and the bolt, the plug can be installed and disassembled at any time. Because of the setting of the screw groove in the plug, the plug is connected to external devices. When different devices need to be connected, different plugs can be replaced, so that different sizes of screw grooves can be replaced. In addition, the user can directly move the clamping block upward to drive the adjusting plate out of the air outlet pipe to clean and maintain the device by oppositely pulling the two pull plates through the connecting block to drive the two clamping columns to separate from the clamping hole and retract into the inner cavity. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A perspective view of a boiler induced draft fan outlet structure of a thermal power plant is provided for the utility model;

[0014] Figure 2 A schematic diagram of the external structure of the adjusting plate of the boiler induced draft fan outlet structure of the thermal power plant is provided for the utility model;

[0015] Figure 3 A schematic diagram of the external structure of the plug of the boiler induced draft fan outlet structure of the thermal power plant is provided for the utility model;

[0016] Figure 4 A schematic diagram of the clamping buckle structure of the boiler induced draft fan outlet structure of the thermal power plant is provided for the utility model.

[0017] Legend: 1. Air outlet duct; 2. Insert block; 3. Mounting plate; 4. Bolt; 5. Handle; 6. Threaded groove; 7. Opening; 8. Locking block; 9. Adjusting plate; 10. Connecting column; 11. Rotating plate; 12. First pin; 13. First insertion hole; 14. Connecting plate; 15. Snap-fit ​​structure; 1501. Inner cavity; 1502. Spring; 1503. Locking column; 16. Locking hole; 17. Connecting block; 18. Pull plate; 19. Support plate; 20. Second pin; 21. Second insertion hole; 22. Moving groove. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, such as Figures 1-4 As shown, this utility model provides an outlet structure for an induced draft fan in a thermal power plant boiler, including an outlet pipe 1. Insert blocks 2 are provided on both sides of the interior of the outlet pipe 1. Threaded grooves 6 are provided on the inner walls of both insert blocks 2. An opening 7 is provided at the center of the top of the outlet pipe 1. A locking block 8 is provided inside the opening 7. A connecting column 10 is rotatably connected inside the locking block 8. The bottom end of the connecting column 10 passes through the locking block 8 and is fixed with an adjusting plate 9 that matches the outlet pipe 1. A buckle structure 15 is provided inside the outlet pipe 1 for locking and limiting the locking block 8.

[0021] The overall effect of embodiment 1 is that, through the setting of the insert 2 and the screw groove 6, the screw groove 6 is used to connect to the external device. By rotating the connecting column 10, the user can drive the adjusting plate 9 to rotate, thereby controlling the air flow in the air outlet duct 1. Through the setting of the snap-fit ​​structure 15, the snap-fit ​​block 8 can be installed and removed, making it easy to remove the snap-fit ​​block 8 and the adjusting plate 9 for cleaning and maintenance, thus making it more practical.

[0022] Example 2, as Figures 1-4As shown, the buckle structure 15 includes two cavities 1501 formed in the inner wall of the opening 7 at both ends, two springs 1502 are fixed in the two cavities 1501, the opposite end of the two springs 1502 is fixed with a clamping column 1503, the opposite end of the two clamping columns 1503 penetrates the cavity 1501 and is arranged in the two connecting plates 14 respectively, the outer wall of the clamping column 1503 is fixed with a connecting block 17 at both ends, one end of the two connecting blocks 17 penetrates the air outlet pipe 1 and is fixed with a pull plate 18, the outer wall of the air outlet pipe 1 is formed with a moving slot 22 matched with the connecting block 17 at both ends, the opposite end of the two connecting plates 14 is formed with a clamping hole 16 matched with the clamping column 1503, the top of the air outlet pipe 1 is fixed with a support plate 19 at both sides, the support plate 19 is provided with a second bolt 20, the bottom end of the second bolt 20 is arranged in the pull plate 18, the support plate 19 is formed with two second insertion holes 21 matched with the second bolt 20, the top of the plug block 2 is fixed with a mounting plate 3 at both sides, the two mounting plates 3 are fixed with the air outlet pipe 1 through bolts 4, the top of the plug block 2 is fixed with a handle 5, the top of the connecting column 10 penetrates the clamping block 8 and is fixed with a rotating plate 11, the rotating plate 11 is provided with a first bolt 12, the rotating plate 11, the air outlet pipe 1 and the clamping block 8 are formed with a plurality of first insertion holes 13 matched with the first bolt 12.

[0023] The effect achieved by the whole embodiment 2 is that the plug block 2 can be installed and disassembled at any time through the installation of the mounting plate 3 and the bolt 4, and the plug block 2 is connected to the external device through the screw groove 6, when different devices need to be connected, different plug blocks 2 are replaced, so that different sizes of screw grooves 6 are replaced, in addition, the user pulls the two pull plates 18 in opposite directions, the connecting block 17 drives the two clamping columns 1503 to separate from the clamping hole 16 and retract into the cavity 1501, at this time the user can directly move the clamping block 8 upward to drive the adjusting plate 9 to move out of the air outlet pipe 1 for cleaning and maintenance, the practicability is stronger, through the installation of the second bolt 20 and the second insertion hole 21, when the clamping block 8 is installed in the air outlet pipe 1, the second bolt 20 can limit the current pull plate 18 through one of the second insertion holes 21, to avoid the accidental sliding of the pull plate 18, when the clamping block 8 needs to be disassembled, the second bolt 20 can limit the pull plate 18 at this time through the other second insertion hole 21, the user does not need to pull the pull plate 18 all the time, which is convenient for disassembly, through the installation of the first bolt 12 and the first insertion hole 13, when the user adjusts the rotation angle of the adjusting plate 9, the first bolt 12 can be inserted into the two first insertion holes 13 at this time, which can limit the position of the rotating plate 11 to avoid accidental rotation.

[0024] Working principle: the device uses, through the installation plate 3 and the bolt 4 can be set at any time to the plug 2 for the installation and disassembly processing, because the plug 2 in the screw groove 6 is set, it is to the external device, when the need for docking different devices, only need to replace different plug 2, so as to replace the different size of screw groove 6, after replacement, through the screw groove 6 the air pipe 1 and the external components are connected, after connecting, through the user rotates the rotating plate 11, drive connecting column 10 rotation, thus drive roller adjusting plate 9 in the air pipe 1 rotation, reach the adjustment of air flow effect, after adjustment, through the first pin 12 is inserted into the two first insertion hole 13 at this time, can be limited to the position of rotating plate 11, avoid the phenomenon of accidental rotation, through the user opposite pull two pull plate 18, through the connecting block 17 drive two card column 1503 from the card hole 16 and retract into the inner cavity 1501, at this time the user can directly move up the card block 8, drive adjusting plate 9 moves out of the air pipe 1, clean and repair, the practicality is stronger.

[0025] The above is only the preferred embodiment of the present application, not the other forms of the present application for other forms of restrictions, any skilled in the art of the technical personnel may use the above disclosed technical content to change or modification as equivalent variation of equivalent embodiments applied in other fields, but any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application, still belongs to the protection scope of the present application technical scheme.

Claims

1. A structure of an induced draft fan outlet of a boiler of a thermal power plant, comprising an outlet duct (1), characterized in that: The inside of the air outlet pipe (1) is provided with an insertion block (2) on both sides, a screw groove (6) is formed in the inner wall of the two insertion blocks (2), an opening (7) is formed in the center of the top end of the air outlet pipe (1), a clamping block (8) is arranged in the opening (7), a connecting column (10) is rotatably connected in the clamping block (8), the bottom end of the connecting column (10) penetrates the clamping block (8) and is fixedly connected with an adjusting plate (9) matched with the air outlet pipe (1), and the air outlet pipe (1) is provided with a buckle structure (15) for clamping and limiting the clamping block (8).

2. A structure of an induced draft fan outlet of a boiler of a thermal power plant according to claim 1, characterized in that: The buckle structure (15) comprises two inner cavities (1501) formed in the inner walls of the two ends of the opening (7), two springs (1502) are fixedly arranged in the two inner cavities (1501), and the opposite ends of the two springs (1502) are fixedly connected with clamping columns (1503), and the opposite ends of the two clamping columns (1503) penetrate the inner cavities (1501) and are arranged in the two connecting plates (14) respectively.

3. A boiler induced draft fan outlet structure for a fossil fuel power plant as recited in claim 2, wherein: The outer walls of the two ends of the clamping column (1503) are fixedly connected with connecting blocks (17), one end of the two connecting blocks (17) penetrates the air outlet pipe (1) and is fixedly connected with a pull plate (18), the outer walls of the two ends of the air outlet pipe (1) are provided with moving grooves (22) matched with the connecting blocks (17), and the opposite ends of the two connecting plates (14) are provided with clamping holes (16) matched with the clamping columns (1503).

4. A boiler induced draft fan outlet structure for a fossil fuel power plant as recited in claim 3, wherein: The top ends of the two sides of the air outlet pipe (1) are fixedly connected with supporting plates (19), the supporting plates (19) are provided with second bolts (20), the bottom ends of the second bolts (20) are arranged in the pull plate (18), and the supporting plates (19) are provided with two second insertion holes (21) matched with the second bolts (20).

5. A structure of an induced draft fan outlet of a boiler of a thermal power plant according to claim 1, characterized in that: The top ends of the two sides of the insertion block (2) are fixedly connected with mounting plates (3), the two mounting plates (3) are fixedly connected with the air outlet pipe (1) through bolts (4), and the top end of the insertion block (2) is fixedly connected with a handle (5).

6. A structure of an induced draft fan outlet of a boiler of a thermal power plant according to claim 1, characterized in that: The top end of the connecting column (10) penetrates the clamping block (8) and is fixedly connected with a rotating plate (11), the rotating plate (11) is provided with a first bolt (12), and the rotating plate (11), the air outlet pipe (1) and the clamping block (8) are provided with a plurality of first insertion holes (13) matched with the first bolt (12).

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