Adjustable tuyere assembly for fluidized bed boiler

Abstract

The utility model discloses an adjustable tuyere component for a fluidized bed boiler, which comprises an external air inlet pipeline, a tuyere component shell and an external air supply pipeline, and further comprises the following components: the external air inlet pipeline which is arranged at the upper end of the tuyere component shell and is mounted on the inner side of a sealing ring; the sealing ring is arranged on the inner side of the upper end of the tuyere assembly shell and is in threaded connection with the tuyere assembly shell; the fixed connecting bolt is arranged in the middle of the sealing ring in a penetrating manner and is in threaded connection with an external air inlet pipeline; the air volume adjusting piece is fixedly arranged on the left end face of the fixed connecting rod and arranged in the air opening assembly shell. According to the adjustable tuyere assembly for the fluidized bed boiler, the tuyere assembly shell can be conveniently detached and taken out between the external air inlet pipeline and the external air supply pipeline through the sealing ring and the fixed connecting bolt; and meanwhile, the passing air volume in the air port assembly shell can be conveniently adjusted through the air volume adjusting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of fluidized bed boilers, in particular to an adjustable tuyere component for fluidized bed boilers. Background Art

[0002] A fluidized bed boiler is a boiler that uses fluidized bed combustion. According to the fluid dynamic characteristics, fluidized bed boilers can be divided into bubbling fluidized bed boilers and circulating fluidized bed boilers. According to the flue gas pressure in the furnace, fluidized bed boilers can be divided into normal pressure fluidized bed boilers and pressurized fluidized bed boilers.

[0003] Fluidized bed boilers need to be equipped with tuyere components to ensure that the interior of the fluidized bed boiler can be adequately supplemented with air so that the internal combustion can react fully, thereby achieving the effect of desulfurization in the furnace.

[0004] Currently, some air outlet components need to be fixed in the middle of the ventilation duct, which will cause operational inconvenience during daily maintenance and repair of the internal air volume adjustment components. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an adjustable tuyere assembly for a fluidized bed boiler, aiming to solve the above problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An adjustable air vent assembly for a fluidized bed boiler comprises an external air inlet duct, an air vent assembly housing and an external air supply duct, wherein the external air inlet duct is arranged at the upper end of the air vent assembly housing, and the adjustable air vent assembly further comprises: a sealing ring, which is arranged on the inner side of the upper end of the air vent assembly housing and is threadedly connected thereto, and the external air inlet duct is installed on the inner side of the sealing ring; a fixed connecting bolt, which is arranged through the middle of the sealing ring and is threadedly connected to the external air inlet duct; an air volume adjustment sheet, which is fixedly arranged on the left end face of the fixed connecting rod and is arranged inside the air vent assembly housing; and a driving motor, which is fixedly installed inside the motor protection housing.

[0008] Preferably, a plug-in slot is provided at the lower end of the air outlet assembly housing, and the plug-in slot is matched with the upper end of the external air supply duct.

[0009] Preferably, an auxiliary rotating ring is fixedly provided on the outer side of the upper end of the sealing ring.

[0010] Preferably, a rubber gasket is fixedly provided on the upper end surface of the external air supply duct, and the rubber gasket seals the contact surface between the air outlet assembly housing and the external air supply duct.

[0011] Preferably, a motor control button is fixedly provided on the upper end of the motor protection housing, and the motor control button is connected to the drive motor through a circuit;

[0012] The driving motor is adapted to the motor control button, and the output end of the driving motor is fixedly connected with a fixed connecting rod.

[0013] Preferably, the fixed connection block is arranged inside the shell of the air outlet assembly and is snap-connected therewith, and is fixedly connected to the left end of the air volume regulating piece.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides an adjustable tuyere assembly for a fluidized bed boiler. Through a sealing ring and a fixed connecting bolt, the tuyere assembly housing can be conveniently disassembled and removed between an external air inlet duct and an external air supply duct. At the same time, the air volume passing through the inside of the tuyere assembly housing can be conveniently adjusted through an air volume adjustment sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the external air supply duct and the rubber gasket connection of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of the fixed connecting rod and the air volume regulating piece connected to the utility model.

[0020] In the figure: 1. External air inlet duct; 20. Air outlet assembly housing; 21. Sealing ring; 22. Auxiliary rotating ring; 23. Fixed connecting bolt; 3. External air supply duct; 31. Rubber gasket; 40. Motor protection housing; 41. Motor control button; 42. Drive motor; 43. Fixed connecting rod; 44. Air volume adjustment plate; 45. Fixed connecting block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4, an adjustable air vent assembly for a fluidized bed boiler, comprising an external air inlet duct 1, an air vent assembly shell 20 and an external air supply duct 3, the external air inlet duct 1 and the external air supply duct 3 are existing ventilation ducts, the external air inlet duct 1 is connected to the external air inlet duct, and the external air supply duct 3 is connected to the external air supply duct, the air vent assembly shell 20 is engaged with the external air supply duct 3 through the plug-in groove opened at the lower end, and the external air supply duct 3 is adapted to the plug-in groove at the lower end of the air vent assembly shell 20, by moving the air vent assembly shell 20 horizontally to the middle of the external air inlet duct 1 and the external air supply duct 3, and moving the air vent assembly shell 20 downward so that the plug-in groove at its lower end is engaged with the external air supply duct 3, the air vent assembly shell 20 can be connected to the external air supply duct 3, and at the same time, the rubber gasket 31 provides a sealing function for the connection between the air vent assembly shell 20 and the external air supply duct 3.

[0023] In the examples of this application, please refer to Figure 1 and 2 The upper end of the air outlet assembly housing 20 is connected to the external air inlet duct 1, and the external air inlet duct 1 is installed on the inner side of the sealing ring 21. The inner side of the upper end of the air outlet assembly housing 20 is threadedly connected to the sealing ring 21. At the same time, an auxiliary rotating ring 22 is fixedly arranged on the outer side of the upper end of the sealing ring 21. A fixed connecting bolt 23 is penetrated through the middle of the sealing ring 21, and the fixed connecting bolt 23 is threadedly connected to the inner side of the external air inlet duct 1. When in use, the auxiliary rotating ring 22 on the outer side of the sealing ring 21 is rotated to drive the sealing ring 21 to rotate. The sealing ring 21 rotates, so that the sealing ring 21 is connected with the internal thread of the air outlet component shell 20, so that the sealing ring 21 moves upward. When the sealing ring 21 moves to the specified position, the sealing ring 21 and the hole-like structures opened around the external air inlet duct 1 correspond one by one, and the fixed connecting bolt 23 is plugged into the sealing ring 21. At the same time, the fixed connecting bolt 23 is fixed to the external air inlet duct 1 by the internal thread, so that the sealing ring 21 seals the connection between the external air inlet duct 1 and the air outlet component shell 20.

[0024] For further information, see Figure 1 , Figure 2 and 4The motor protection housing 40 is fixedly arranged at the middle of the right end of the air outlet component housing 20. The motor control button 41 passes through the motor protection housing 40 through the circuit and is connected to the internal drive motor 42 in an existing manner. The output end of the drive motor 42 is fixedly connected with a fixed connecting rod 43. The left end face of the fixed connecting rod 43 is fixedly provided with an air volume adjustment piece 44. The left end face of the air volume adjustment piece 44 is fixedly installed with a fixed connecting block 45, and the fixed connecting block 45 is snap-connected with the inner left end of the air outlet component housing 20. The fixed connecting block 45 is for the left side of the air volume adjustment piece 44 to provide a limiting effect. When in use, the motor protection housing 40 is opened by the motor control button 41. The internal driving motor 42 drives the fixed connecting rod 43 to rotate, and the fixed connecting rod 43 will synchronously drive the air volume adjusting plate 44 to rotate. When the air volume adjusting plate 44 is in a horizontal position, the interior of the air outlet component shell 20 will be divided into upper and lower parts, thereby preventing the air volume inside the external air inlet duct 1 from being transmitted to the interior of the external air supply duct 3. When the air volume adjusting plate 44 is rotated to a vertical position through the fixed connecting rod 43, the air volume inside the external air inlet duct 1 can be transmitted to the interior of the external air supply duct 3. At the same time, the wind speed of the external air inlet duct 1 entering the external air supply duct 3 can be adjusted according to the rotation angle of the air volume adjusting plate 44.

[0025] The working principle of the adjustable tuyere assembly for a fluidized bed boiler of this embodiment is as follows:

[0026] First, the air vent assembly shell 20 is moved horizontally and steadily to the middle of the external air inlet duct 1 and the external air supply duct 3, and then the plug-in slot at the lower end of the air vent assembly shell 20 is connected to the external air supply duct 3, so that the air vent assembly shell 20 is stably connected to the external air supply duct 3, and at the same time, the rubber gasket 31 provides a sealing effect between the air vent assembly shell 20 and the external air supply duct 3, and then the auxiliary rotating ring 22 drives the sealing ring 21 to rotate, so that the hole structure opened around the sealing ring 21 is connected to the external air inlet duct 1. The hole-like structures opened around the pipe 1 correspond one to one, and the fixed connecting bolt 23 is passed through the sealing ring 21 and rotated and threadedly connected to the external air inlet pipe 1, so that the air outlet assembly housing 20 is stably fixed between the external air inlet pipe 1 and the external air supply pipe 3. Finally, the motor control button 41 is used to turn on the driving motor 42 so that it drives the air volume adjustment plate 44 to rotate through the fixed connecting rod 43. The rotation angle of the air volume adjustment plate 44 can control the air volume from the external air inlet pipe 1 to the external air supply pipe 3.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[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. An adjustable tuyere assembly for a fluidized bed boiler, comprising an external air inlet duct, a tuyere assembly housing and an external air supply duct, characterized in that: The external air inlet duct is arranged at the upper end of the air outlet assembly housing, and the adjustable air outlet assembly further comprises: A sealing ring, which is arranged on the inner side of the upper end of the air outlet assembly housing and is threadedly connected thereto, and the external air inlet duct is installed on the inner side of the sealing ring; A fixed connecting bolt is arranged through the middle of the sealing ring and is threadedly connected to the external air inlet duct; An air volume adjustment piece, which is fixedly arranged on the left end surface of the fixed connecting rod and is arranged inside the housing of the air outlet assembly; The driving motor is fixedly installed inside the motor protection housing.

2. The adjustable tuyere assembly for a fluidized bed boiler according to claim 1, characterized in that: The lower end of the air outlet component housing is provided with a plug-in slot, and the plug-in slot is adapted to the upper end of the external air supply duct.

3. The adjustable tuyere assembly for a fluidized bed boiler according to claim 1, characterized in that: An auxiliary rotating ring is fixedly arranged on the outer side of the upper end of the sealing ring.

4. The adjustable tuyere assembly for a fluidized bed boiler according to claim 1, characterized in that: A rubber gasket is fixedly provided on the upper end surface of the external air supply duct, and the rubber gasket seals the contact surface between the air outlet assembly housing and the external air supply duct.

5. The adjustable tuyere assembly for a fluidized bed boiler according to claim 1, characterized in that: A motor control button is fixedly arranged on the upper end of the motor protection housing, and the motor control button is connected to the drive motor through a circuit; the drive motor is adapted to the motor control button, and a fixed connecting rod is fixedly connected to the output end of the drive motor.

6. The adjustable tuyere assembly for a fluidized bed boiler according to claim 1, characterized in that: The fixed connection block is arranged inside the shell of the air outlet assembly and is snap-connected therewith, and is fixedly connected to the left end of the air volume regulating piece.

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