Cooling tower fan blade tip vortex suppression base

Abstract

The utility model relates to the technical field of cooling towers, in particular to a cooling tower fan blade tip vortex suppression base which comprises a mounting seat connected with fan blades, a mounting frame is fixedly mounted on the mounting seat, a fan tip is rotatably mounted on the mounting frame, a plurality of flow guide grooves are formed in the outer wall of the fan tip at equal intervals, and the flow guide grooves are communicated with the mounting frame. A transverse plate is fixedly mounted in the mounting frame, an adjusting motor is fixedly mounted on the transverse plate, and a driving shaft is coaxially fixed to an output shaft of the adjusting motor. The base is stably connected with the fan blades through the annular mounting seat and the fixing bolts, the adjusting motor in the mounting frame can flexibly adjust the angle of the fan tip rotationally mounted on the mounting frame through the driving shaft, the flow guide groove in the outer wall of the fan tip can effectively comb airflow, and through the synergistic effect of the three parts, the base is ensured to be stably mounted, and the service life of the base is prolonged. And the blade tip angle can be flexibly adjusted according to working conditions, blade tip vortex is restrained through the flow guide grooves, energy loss is reduced, and the fan operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, specifically to a cooling tower fan blade tip vortex suppression base. Background Technology

[0002] In the actual operation of a cooling tower, the efficiency of the fan plays a crucial role in the cooling effect. However, when the fan blades of existing cooling towers rotate at high speed, vortices are easily generated at the blade tips. On the one hand, the formation of vortices disrupts the normal airflow, forcing the fan blades to overcome more resistance during rotation, thus significantly increasing energy loss, wasting electrical and other energy resources, and raising the operating costs of the cooling tower. On the other hand, turbulent vortices also cause fan blade vibration, generating significant noise, which not only pollutes the surrounding environment but also accelerates the fatigue damage of the fan blade structure, shortens its service life, and increases the frequency and cost of equipment maintenance and replacement.

[0003] Meanwhile, the traditional cooling tower fan blade tip structure is relatively fixed, making it difficult to effectively adjust airflow according to different operating conditions and failing to meet diverse usage requirements. Furthermore, current blade tips lack turbulence-preventing structures to avoid vortex generation, or the existing turbulence-preventing structures are simplistic and ineffective. In view of these problems, there is an urgent need for a cooling tower fan blade tip vortex suppression base that can effectively suppress tip vortices, is stably installed, and flexibly adjustable, in order to improve the overall performance and operational stability of the cooling tower. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a cooling tower fan blade tip vortex suppression base.

[0005] The technical solution of this utility model is:

[0006] A cooling tower fan blade tip vortex suppression base includes a mounting base connected to the fan blade. A mounting frame is fixedly mounted on the mounting base, and a fan tip is rotatably mounted on the mounting frame. Several equally spaced guide grooves are formed on the outer wall of the fan tip. A horizontal plate is fixedly mounted inside the mounting frame, and an adjusting motor is fixedly mounted on the horizontal plate. A drive shaft is coaxially fixed to the output shaft of the adjusting motor and the fan tip. The drive shaft is coaxially fixed to the fan tip. The mounting base is annular and has several equally spaced fixing bolts mounted on it, which are fixedly connected to the fan blade. Through the annular mounting base and fixing bolts, the fan blade is securely connected. The adjusting motor inside the mounting frame can flexibly adjust the angle of the fan tip rotatably mounted on the mounting frame via the drive shaft. The guide grooves on the outer wall of the fan tip effectively manage airflow. These three elements work together to ensure stable base installation, allow flexible adjustment of the fan tip angle according to operating conditions, suppress tip vortices through the guide grooves, reduce energy loss, and improve fan operating efficiency.

[0007] As a preferred technical solution, the fan tip is provided with a number of horizontally parallel ventilation holes. The ventilation holes are strip-shaped and can guide airflow through the fan tip, reducing the formation of eddies.

[0008] As a preferred technical solution, a potentiometer-type angle sensor is installed inside the mounting frame. The potentiometer-type angle sensor includes an arc-shaped resistive element and a contact roller that cooperates with the arc-shaped resistive element, used to detect the rotation angle of the fan tip.

[0009] As a preferred technical solution, an extension rod is fixedly connected to the outer circumference of the drive shaft, and a U-shaped frame is fixedly installed on the top of the extension rod. The contact roller is rotatably installed inside the U-shaped frame, so that the contact roller can roll on the arc-shaped resistor sheet as the drive shaft rotates.

[0010] As a preferred technical solution, the arc-shaped resistor is concentrically arranged with the drive shaft, and the contact roller is in close contact with the bottom inner wall of the arc-shaped resistor to ensure that the angle sensor can accurately measure the rotation angle of the fan tip.

[0011] As a preferred technical solution, the outer wall of the fan tip is provided with a number of evenly distributed turbulence protrusions, and the inner wall of the ventilation hole is also provided with a number of turbulence protrusions. These turbulence protrusions can disrupt the laminar flow state of the airflow and further reduce the generation of eddies.

[0012] As a preferred technical solution, the maximum rotation angle of the drive shaft is 180 degrees, and the arc-shaped resistor is semi-circular, matching the rotation angle range of the drive shaft.

[0013] As a preferred technical solution, a sealing gasket is fixedly installed on the outer wall of the mounting base near the fan blade. When the fixing bolt is tightened on the fan blade, the sealing gasket fits tightly with the fan blade to prevent dust, moisture, etc. from entering the interior of the mounting base and affecting the normal operation of the equipment.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model uses an annular mounting base and fixing bolts to firmly connect the fan blades. The adjustment motor inside the mounting frame can flexibly adjust the angle of the fan tip mounted on the mounting frame via a drive shaft. The guide groove on the outer wall of the fan tip can effectively sort the airflow. The three work together to ensure the stable installation of the base and to flexibly adjust the angle of the fan tip according to the working conditions. The guide groove suppresses tip vortices, reduces energy loss, and improves the operating efficiency of the fan. Attached Figure Description

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

[0017] Figure 2 This is one of the structural schematic diagrams of the fan tip in this utility model;

[0018] Figure 3 This is the second schematic diagram of the fan tip structure in this utility model;

[0019] Figure 4 This is a structural diagram of the mounting frame and its internal structure in this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the mounting frame in this utility model;

[0021] Figure 6 In this utility model Figure 5 Enlarged view of point A in the middle.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 100. Fan tip; 101. Ventilation hole; 102. Guide groove; 103. Turbidity protrusion; 200. Mounting frame; 201. Horizontal plate; 202. Adjustment motor; 203. Extension rod; 204. Arc-shaped resistor; 205. U-shaped frame; 2051. Contact roller; 206. Drive shaft; 300. Mounting base; 301. Sealing gasket; 400. Fixing bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to the accompanying drawings. This utility model provides a technical solution:

[0026] like Figures 1-3As shown, the cooling tower fan blade tip vortex suppression base includes a mounting base 300 connected to the fan blade. The mounting base 300 is annular and is fixedly connected to the fan blade by several equally spaced fixing bolts 400. A sealing gasket 301 is fixedly installed on the outer wall of the mounting base 300 near the fan blade. When the fixing bolts 400 are tightened, the sealing gasket 301 fits tightly against the fan blade, providing a sealing effect. A mounting frame 200 is fixedly installed on the mounting base 300, and a fan tip 100 is rotatably mounted on the mounting frame 200. Several equally spaced guide grooves 102 are formed on the outer wall of the fan tip 100. The guide grooves 102 can guide the airflow and reduce the generation of vortices. The fan tip 100 is also provided with several horizontally parallel strip-shaped ventilation holes 101. The inner wall of the ventilation hole 101 is provided with several turbulence protrusions 103, and the outer wall of the fan tip 100 is also provided with several evenly distributed turbulence protrusions 103. These turbulence protrusions 103 can disrupt the laminar flow state of the airflow and further suppress the formation of vortices.

[0027] like Figure 4 and Figure 5 As shown, in a preferred embodiment, a horizontal plate 201 is fixedly installed inside the mounting frame 200, and an adjusting motor 202 is fixedly installed on the horizontal plate 201. A drive shaft 206 is coaxially fixed to the output shaft of the adjusting motor 202. The drive shaft 206 is coaxially fixed to the fan tip 100. The adjusting motor 202 drives the fan tip 100 to rotate through the drive shaft 206, thereby adjusting the angle of the fan tip 100 to adapt to different working conditions.

[0028] like Figure 4 , Figure 5 and Figure 6 As shown, in a preferred embodiment, a potentiometer-type angle sensor is also installed within the mounting frame 200 to detect the rotation angle of the fan tip 100. This potentiometer-type angle sensor includes an arc-shaped resistive element 204 and a contact roller 2051 that cooperates with the arc-shaped resistive element 204. An extension rod 203 is fixedly connected to the outer circumference of the drive shaft 206, and a U-shaped frame 205 is fixedly mounted on the top of the extension rod 203. The contact roller 2051 is rotatably mounted within the U-shaped frame 205. The arc-shaped resistive element 204 is concentrically arranged with the drive shaft 206, and the contact roller 2051 is in close contact with the inner bottom wall of the arc-shaped resistive element 204. When the drive shaft 206 drives the fan tip 100 to rotate, the extension rod 203 rotates accordingly, and the contact roller 2051 rolls on the arc-shaped resistive element 204, thereby changing the resistance value in the circuit. By measuring the resistance value, the rotation angle of the fan tip 100 can be determined. The maximum rotation angle of the drive shaft 206 is 180 degrees, and the arc-shaped resistor 204 is semi-circular, matching the rotation angle range of the drive shaft 206.

[0029] In use, the cooling tower fan blade tip vortex suppression base of this utility model is first fixed to the fan blade with fixing bolts 400, ensuring that the sealing gasket 301 is tightly fitted to the fan blade. Then, according to the actual working conditions, the regulating motor 202 is started, and the regulating motor 202 drives the fan tip 100 to rotate to a suitable angle through the drive shaft 206. During the operation of the fan, the guide groove 102, ventilation hole 101 and turbulence protrusion 103 on the fan tip 100 work together to effectively suppress the generation of tip vortices, reduce energy loss and noise, and improve the efficiency and service life of the fan. At the same time, the potentiometer-type angle sensor monitors the rotation angle of the fan tip 100 in real time to ensure that the fan tip 100 is always in the optimal working position.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling tower fan blade tip vortex suppression pedestal, characterized by: The utility model provides a fan blade, including the mounting seat (300) connected with the fan blade, a mounting frame (200) is fixedly installed on the mounting seat (300), a fan tip (100) is rotatably installed on the mounting frame (200), a plurality of equidistance arranged guide grooves (102) are set up on the outer wall of fan tip (100), a horizontal plate (201) is fixedly installed in the mounting frame (200), an adjusting motor (202) is fixedly installed on the horizontal plate (201), a driving shaft (206) is coaxially fixed on the output shaft of adjusting motor (202), the driving shaft (206) is coaxially fixed with fan tip (100), the mounting seat (300) is annular, and a plurality of equidistance arranged fixed bolts (400) are installed on it, and the fixed bolt (400) is fixedly connected with the fan blade.

2. The cooling tower fan blade tip vortex suppression pedestal of claim 1, wherein: A plurality of transverse parallel arranged ventilation holes (101) are set up on the fan tip (100), and the ventilation hole (101) is strip-shaped.

3. The cooling tower fan blade tip vortex suppression pedestal of claim 2, wherein: An electric potential ware type angle sensor is installed in the mounting frame (200), and the electric potential ware type angle sensor comprises an arc resistance sheet (204) and a contact roller (2051) used in cooperation with the arc resistance sheet (204).

4. The cooling tower fan blade tip vortex suppression pedestal of claim 3, wherein: An extension rod (203) is fixedly connected to the circumferential outer wall of the driving shaft (206), a U-shaped frame (205) is fixedly installed on the top of the extension rod (203), and the contact roller (2051) is rotatably installed in the U-shaped frame (205).

5. The cooling tower fan blade tip vortex suppression pedestal of claim 4, wherein: The arc resistance sheet (204) is concentrically arranged with the driving shaft (206), and the contact roller (2051) is in close contact with the inner wall of the bottom of the arc resistance sheet (204).

6. The cooling tower fan blade tip vortex suppression pedestal of claim 5, wherein: A plurality of evenly distributed spoiler convex points (103) are arranged on the outer wall of the fan tip (100), and a plurality of spoiler convex points (103) are arranged on the inner wall of the ventilation hole (101).

7. The cooling tower fan blade tip vortex suppression pedestal of claim 6, wherein: The maximum rotation angle of the driving shaft (206) is 180 degrees, and the arc resistance sheet (204) is semicircular.

8. The cooling tower fan blade tip vortex suppression pedestal of claim 7, wherein: A sealing gasket (301) is fixedly installed on the outer wall of the mounting seat (300) close to the fan blade side, and the sealing gasket (301) is tightly attached to the fan blade when the fixed bolt (400) is tightened on the fan blade.

Images