Two-stage dynamic regulation fan

Abstract

The utility model provides a two-stage dynamic regulation fan, and belongs to the technical field of boilers. The two-stage dynamic regulation fan comprises a base and a buffering assembly installed on the base, the top of the buffering assembly communicates with a bearing plate internally provided with a cavity, a two-stage dynamic regulation fan body is installed at the top of the bearing plate, the bottom of the bearing plate communicates with an air pipe assembly, and a motor of the two-stage dynamic regulation fan body is sleeved with the air pipe assembly; the buffering assembly stretches out and draws back. The base placed on the ground is arranged, the buffering assembly is installed on the base, meanwhile, the top of the buffering assembly communicates with the bearing plate internally provided with the cavity, the two-stage dynamic regulation fan body is installed on the bearing plate, when vibration is generated during work, the vibration is buffered through the buffering assembly, and meanwhile due to the fact that the buffering assembly vibrates up and down, air enters and exits from the cavity; furthermore, the air pipe assembly absorbs and blows out air, so that the air velocity on the motor surface of the two-stage dynamic adjustment motor body is accelerated, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The present application relates to the field of boilers, and in particular to a two-stage dynamically adjustable fan. Background Art

[0002] The two-stage dynamically adjusted induced draft fan is one of the commonly used equipment in power plant boilers. The flue gas in the boiler is introduced axially into the desulfurization island or chimney.

[0003] The utility model patent with patent number CN209761869U discloses a two-stage axial flow induced draft fan with adjustable moving blades for large power stations, including a machine body, an upper base is fixedly arranged at the bottom of the machine body, and a damping block is movably inserted at the bottom of the limit seat. The upper base drives the support rod downward to squeeze the buffer spring 2 to elastically buffer part of the shock force. At the same time, when the upper base moves downward, the damping block drives the connecting plate upward to squeeze the buffer spring 1 to buffer the residual vibration, thereby reducing the vibration amplitude of the machine body during operation and greatly extending the service life of the machine body.

[0004] In the above scheme, the second buffer spring is used in conjunction with the first buffer spring to achieve the purpose of alleviating the vibration amplitude of the machine body, thereby extending the service life of the machine body. However, for the two-stage dynamic adjustment fan, in addition to the vibration generated during its own operation affecting its service life, the heat generated during its own operation will further affect the service life of its components, and thus affect its overall service life. For this reason, we propose a two-stage dynamic adjustment fan. Utility Model Content

[0005] In order to make up for the above deficiencies, the present application provides a two-stage dynamically adjustable fan, which aims to improve the problem of slow heat dissipation generated by the two-stage dynamically adjustable fan.

[0006] An embodiment of the present application provides a two-stage dynamically adjustable fan, including a base and a buffer assembly installed on the base, the top of the buffer assembly is connected to a carrier plate with a chamber opened inside, the top of the carrier plate is installed with a two-stage dynamically adjustable fan body, and the bottom is connected to an air duct assembly, the air duct assembly is mounted on the motor of the two-stage dynamically adjustable fan body, when the buffer assembly is extended and retracted, the gas inside it enters and exits the chamber, so that the air duct assembly absorbs and blows out air.

[0007] In a specific implementation manner, a groove is provided on the top of the base, and a plurality of buffer components are provided and are fixedly installed in the groove.

[0008] In a specific embodiment, the buffer assembly includes a fixed tube fixedly installed at the bottom of the groove and a piston rod slidably arranged in the fixed tube. The piston rod has a T-shaped cross-section and an air hole is opened inside. The air hole is connected to the chamber.

[0009] In a specific embodiment, the buffer assembly further includes a buffer spring sleeved on the fixing tube, and the buffer spring is connected to the groove and the bottom of the supporting plate.

[0010] In a specific implementation, a frame plate is fixedly mounted on the bottom of the carrier plate, and the bottom of the frame plate is slidably disposed in the groove.

[0011] In a specific embodiment, the air duct assembly includes a box body fixedly mounted on the top of the supporting plate and connected to the chamber, and the side walls at both ends of the box body are connected to the same air duct. The air duct is mounted on the motor of the two-stage dynamic adjustment fan body, and a plurality of air outlets are opened on its inner wall.

[0012] In a specific implementation, the motor of the two-stage dynamic adjustment fan body is installed on the box body, a plurality of first through holes are opened on the top of the chamber, and the bottom of the box body is open and covered on the plurality of first through holes.

[0013] In a specific embodiment, two reinforcement blocks are fixedly connected between the bottom of the chamber, and the second through holes are formed in the two reinforcement blocks.

[0014] The beneficial effects of the present application are as follows: a base placed on the ground is provided, a buffer assembly is installed on the base, and at the same time, the top of the buffer assembly is connected to a bearing plate with a chamber opened inside, and the two-stage dynamic adjustment fan body is installed on the bearing plate, so that when vibration is generated during operation, it is buffered by the buffer assembly, and at the same time, due to the up and down vibration of the buffer assembly, air can enter and exit the chamber, and further, the air duct assembly can absorb and blow out air, so that the air flow rate on the motor surface of the two-stage dynamic adjustment motor body is accelerated, so as to improve the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the main structure of a two-stage dynamic adjustment fan provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of a partial front cross-sectional structure of a two-stage dynamically adjustable fan provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the structure of a buffer assembly in a two-stage dynamic adjustment fan provided in an embodiment of the present application;

[0019] Figure 4 A bottom-up structural schematic diagram of an air duct assembly in a two-stage dynamic adjustment fan provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the structure of a bearing plate in a two-stage dynamic adjustment fan provided in an embodiment of the present application;

[0021] Figure 6 A schematic cross-sectional structure diagram of a bearing plate in a two-stage dynamic adjustment fan provided in an embodiment of the present application;

[0022] Figure 7 for Figure 2 A partial enlarged view of point A in the middle.

[0023] In the figure: 10-base; 110-groove; 20-buffer assembly; 210-fixed pipe; 220-piston rod; 230-air hole; 240-buffer spring; 30-bearing plate; 310-frame plate; 40-two-stage dynamic adjustment fan body; 50-air duct assembly; 510-box; 520-air duct; 530-air outlet; 60-first through hole; 70-reinforcement plate; 710-second through hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] See also Figure 1-7 The present application provides a two-stage dynamic adjustment fan, including a base 10 and a buffer assembly 20 installed on the base 10. The top of the buffer assembly 20 is connected to a carrier plate 30 with a chamber opened inside. Specifically, the buffer assembly 20 is connected to the bottom of the chamber so that the internal space of the buffer assembly 20 is connected to the chamber, which can further achieve the purpose of air flow. A two-stage dynamic adjustment fan body 40 is installed on the top of the carrier plate 30, and a duct assembly 50 is connected to the bottom. The duct assembly 50 is sleeved on the motor of the two-stage dynamic adjustment fan body 40. When the buffer assembly 20 is extended or retracted, the internal gas thereof enters and exits the chamber, so that the duct assembly 50 absorbs and blows out air.

[0026] See also Figure 2 A groove 110 is provided at the top of the base 10, and a plurality of buffer components 20 are provided and fixedly installed in the groove 110. The plurality of buffer components 20 are connected to the chamber, and then the plurality of buffer components 20 move synchronously to realize simultaneous delivery of air into the chamber.

[0027] The buffer assembly 20 includes a fixed tube 210 fixedly installed at the bottom of the groove 110 and a piston rod 220 slidably arranged in the fixed tube 210. It should be noted that an outlet hole is provided at the top of the side wall of the fixed tube 210. When the piston rod 220 moves upward in the fixed tube 210, air can be discharged through the outlet hole. The cross-section of the piston rod 220 is T-shaped and an air hole 230 is provided inside. The air hole 230 is connected to the chamber. When the piston rod 220 moves downward, the air in the fixed tube 210 enters the chamber.

[0028] See also Figure 2 The buffer assembly 20 also includes a buffer spring 240 sleeved on the fixed tube 210. The buffer spring 240 is connected to the groove 110 and the bottom of the bearing plate 30. Specifically, when the piston rod 220 slides up and down in the fixed tube 210, it will squeeze the air in the fixed tube 210. Further, the movement of the piston rod 220 will be subject to corresponding resistance, and then when cooperating with the buffer spring 240, it can play a damping role to achieve the purpose of alleviating vibration.

[0029] See also Figure 2 and 3 A frame plate 310 is fixedly installed at the bottom of the supporting plate 30, and the bottom of the frame plate 310 is slidably arranged in the groove 110. The frame plate 310 slides in the groove 110 to achieve the purpose of limiting the supporting plate 30. Furthermore, the distance between the frame plate 310 and the bottom of the groove 110 is small, thereby limiting the vibration amplitude of the supporting plate 30 and preventing damage to the connection components with the two-stage dynamic adjustment fan body 40.

[0030] It should be noted that a connecting flange is installed at the pipeline outlet of the two-stage dynamic adjustment fan body 40, and the connecting flange is connected to the existing pipeline. Furthermore, the pipeline is a flexible soft pipeline.

[0031] See also Figure 1 , 2 , 4 and 5, the air duct assembly 50 includes a box body 510 fixedly mounted on the top of the bearing plate 30 and connected to the chamber, the internal space of the box body 510 is connected to the chamber to achieve the purpose of air flow, and the side walls at both ends of the box body 510 are connected with the same air duct 520, and the air duct 520 is specifically U-shaped, the air duct 520 is sleeved on the motor of the two-stage dynamic adjustment fan body 40, and a plurality of air ports 530 are opened on its inner wall, and the air ports 530 are evenly distributed on the inner circle side wall of the air duct 520. The air passes through the air ports 530 to enter and exit the air duct 520, thereby accelerating the air flow rate on the surface of the motor and further improving the heat dissipation efficiency of the motor.

[0032] The motor of the two-stage dynamic adjustment fan body 40 is installed on the box body 510, and a plurality of first through holes 60 are opened on the top of the chamber. The bottom of the box body 510 is open and covered on the plurality of first through holes 60. The chamber is connected with the internal space of the box body 510 through the first through holes 60.

[0033] See also Figure 6 Two reinforcing plates 70 are fixedly connected between the bottom and the bottom of the chamber. The reinforcing plates 70 can improve the overall structural strength of the supporting plate 30, so that the supporting plate 30 can carry the two-stage dynamic adjustment fan body 40. The two reinforcing plates 70 are both provided with second through holes 710, and the second through holes 710 allow the air inside the chamber to flow.

[0034] When the two-stage dynamic regulating fan is in use: the two-stage dynamic regulating fan body 40 is installed on the bearing plate 30, and its motor housing is installed on the box body 510. The specific installation structure is the existing technology. Further, when the power plant boiler is working, it needs to duct air through the two-stage dynamic regulating fan body 40, so that vibration is generated during its operation. Further, the buffer spring 240 can fully alleviate the vibration of the bearing plate 30. At the same time, the piston rod 220 moves up and down in the fixed tube 210 to squeeze the air inside the fixed tube 210. Further, the movement process of the piston rod 220 is affected by air resistance to achieve the purpose of damping, thereby alleviating the vibration of the bearing plate 30.

[0035] Furthermore, the piston rod 220 moves up and down in the fixed tube 210, allowing the air inside the fixed tubes 210 to enter and exit the chamber, thereby allowing the outside air to enter and exit the air duct 520 through the air outlet 530, thereby achieving rapid air flow on the motor surface of the two-stage dynamic adjustment fan body 40 to improve the heat dissipation efficiency of the motor.

[0036] It should be noted that the specific model and specifications of the two-stage dynamic adjustment fan body 40 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0037] The power supply and principle of the two-stage dynamic adjustment fan body 40 are clear to those skilled in the art and will not be described in detail here.

[0038] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A two-stage dynamic adjustment fan, characterized in that: The invention comprises a base (10) and a buffer assembly (20) mounted on the base (10); the top of the buffer assembly (20) is connected to a carrier plate (30) with a chamber formed therein; the top of the carrier plate (30) is installed with a two-stage dynamic adjustment fan body (40); the bottom of the carrier plate (30) is connected to an air duct assembly (50); the air duct assembly (50) is sleeved on a motor of the two-stage dynamic adjustment fan body (40); when the buffer assembly (20) is extended or retracted, gas inside the buffer assembly (20) enters and exits the chamber, so that the air duct assembly (50) absorbs and blows out air.

2. A two-stage dynamic adjustment fan according to claim 1, characterized in that: The top of the base (10) is provided with a groove (110), and a plurality of buffer components (20) are provided and are fixedly installed in the groove (110).

3. A two-stage dynamic adjustment fan according to claim 2, characterized in that: The buffer assembly (20) comprises a fixed tube (210) fixedly mounted at the bottom of the groove (110) and a piston rod (220) slidably arranged in the fixed tube (210); the piston rod (220) has a T-shaped cross section and is provided with an air hole (230) inside; the air hole (230) is connected to the chamber.

4. A two-stage dynamic adjustment fan according to claim 3, characterized in that: The buffer assembly (20) further comprises a buffer spring (240) sleeved on the fixed tube (210), and the buffer spring (240) is connected to the groove (110) and the bottom of the bearing plate (30).

5. A two-stage dynamic adjustment fan according to any one of claims 2 to 4, characterized in that: A frame plate (310) is fixedly mounted on the bottom of the carrier plate (30), and the bottom of the frame plate (310) is slidably disposed in the groove (110).

6. A two-stage dynamic adjustment fan according to any one of claims 1 to 4, characterized in that: The air duct assembly (50) comprises a box body (510) fixedly mounted on the top of the supporting plate (30) and connected to the chamber, and the side walls at both ends of the box body (510) are connected to the same air duct (520), and the air duct (520) is sleeved on the motor of the two-stage dynamic adjustment fan body (40), and a plurality of air outlets (530) are opened on the inner wall thereof.

7. A two-stage dynamic adjustment fan according to claim 6, characterized in that: The motor of the two-stage dynamic adjustment fan body (40) is installed on the box body (510), a plurality of first through holes (60) are opened on the top of the chamber, and the bottom of the box body (510) is open and covered on the plurality of first through holes (60).

8. A two-stage dynamic adjustment fan according to claim 5, characterized in that: Two reinforcing plates (70) are fixedly connected between the bottom of the chamber, and the two reinforcing plates (70) are both provided with a second through hole (710).

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