A multi-stage centrifugal fan combined guide column

Abstract

The utility model discloses a multi-stage centrifugal fan combined guide column, comprising an outer shell, a threaded column is arranged on one side of the outer shell, an inner shell is arranged inside the outer shell, a gap exists between the inner shell and the outer shell, and the outer shell and the inner shell are divided into a plurality of small sections, a card slot is arranged on one side of the inner shell, a connecting block is arranged on the other side of the inner shell, a closed impeller is arranged at the inner center of the inner shell, a light emitting mechanism is arranged on the side of the outer shell away from the threaded column, a coolant pipe is arranged inside the closed impeller, airflow resistance is reduced by a streamlined guide column body, a segmented design is adopted to adapt to airflow guiding requirements of different pressure and speed sections, a laser beam emitted by a laser light source can be directly mapped on the surface inside the fan, and an operator can intuitively observe the alignment of the guide column and the relative position of the internal structure of the fan.

Description

Technical Field

[0001] The utility model relates to the field of combined guide columns, and more specifically, to a combined guide column for a multi-stage centrifugal fan. Background Art

[0002] The guide column of a multi-stage centrifugal fan is one of its core components, responsible for guiding the airflow into the impeller smoothly and ensuring the effective increase of gas pressure;

[0003] After searching, the existing patent (publication number: CN104583531A) discloses a detachable guide column for use with a fixed underwater structure on the seabed. The guide column provides assistance in the process of lowering the component from the horizontal plane to the underwater structure to obtain the centralized landing position of the component at a predetermined position. The guide column includes an end protruding upward (in the use position), and the end protruding upward is designed to engage with the lowered component. The guide column is a lightweight shell component to increase buoyancy during the process of lowering the guide column into the sea by using an ROV. The lightweight shell component defines a cavity, which is filled with a non-contractile buoyancy material in at least a portion of the guide column. The inventor found that the prior art has the following problems in the process of realizing the utility model:

[0004] The existing guide column often needs to be inserted into the machine for docking during use and installation. It is difficult to align accurately in the absence of a light source, resulting in operational errors. At the same time, the impeller of the guide column in a multi-stage centrifugal fan cannot adapt to the airflow guidance requirements of different pressure and speed sections;

[0005] Therefore, in order to solve the above problems, a multi-stage centrifugal fan combined guide column is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a multi-stage centrifugal fan combined guide column to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage centrifugal fan combined guide column, comprising an outer shell, a threaded column is arranged on one side of the outer shell, an inner shell is arranged inside the outer shell, there is a gap between the inner shell and the outer shell, and the outer shell and the inner shell are divided into several groups of small sections, a slot is arranged on one side of the inner shell, a connecting block is arranged on the other side of the inner shell, the connecting block is connected to the slot so that several groups of small sections composed of the outer shell and the inner shell form a whole, a closed impeller is arranged at the inner center of the inner shell, a light-emitting mechanism is arranged on the side of the outer shell away from the threaded column, and a coolant pipe is arranged inside the closed impeller.

[0008] Preferably, an air flow channel is provided inside the threaded column, and the diameter of the air flow channel is the same as that of the closed impeller.

[0009] Preferably, the card slots are provided in four groups, and the four groups of the card slots are evenly arranged along the circumferential direction of the gap between the outer shell and the inner shell, and the connecting blocks are provided in four groups, and the four groups of the connecting blocks are evenly arranged along the circumferential direction of the bottom of the inner shell, and each group of the connecting blocks corresponds to each group of the card slots.

[0010] Preferably, the light-emitting mechanism includes a push switch, a laser lamp tube and a laser light source, wherein a push switch is provided on one side of the laser lamp tube and a laser light source is provided on the other side of the laser lamp tube, and the light-emitting mechanism is turned on and off by pressing the laser light source to trigger the push switch.

[0011] Preferably, the closed impeller includes a cover plate, blades and an impeller disk, the impeller disk is arranged below the cover plate, blades are arranged above the impeller disk, the blades are arranged in several groups, and the blades in each group are evenly arranged along the circumferential direction of the impeller disk.

[0012] Preferably, the coolant pipe is connected to the impeller disc through the cover plate, and the coolant pipe is spirally shaped above the impeller disc.

[0013] Preferably, the outer shell is connected to the connecting block through the slot to form a tapered guide column, and a group of the closed impellers is respectively arranged at the center of each small section composed of the outer shell and the inner shell.

[0014] Technical effects and advantages of the utility model:

[0015] Compared with the prior art, this multi-stage centrifugal fan combined guide column reduces airflow resistance and improves airflow transmission efficiency through a streamlined guide column body. The guide column adopts a segmented design, and each segment is specifically matched with a corresponding impeller to adapt to the airflow guidance requirements of different pressure and speed sections. The streamlined guide column body reduces airflow resistance and improves airflow transmission efficiency.

[0016] Compared with the prior art, the laser beam emitted by the laser light source can be directly mapped on the surface inside the fan by the guide column of the multi-stage centrifugal fan combination, so that the operator can intuitively observe the alignment of the guide column and the relative position of the internal structure of the fan. This helps to quickly and accurately detect and adjust the position of the guide column to ensure the optimal performance of the fan system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the outer shell and the inner shell of the utility model.

[0019] Figure 3 It is a schematic diagram of the local structure of the light-emitting mechanism of the utility model.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the closed impeller and the coolant pipe of the utility model.

[0021] The figures are marked as follows: 1. outer shell; 2. threaded column; 3. inner shell; 4. slot; 5. connecting block; 6. closed impeller; 7. light-emitting mechanism; 8. coolant pipe; 9. push switch; 10. laser lamp tube; 11. laser light source; 12. cover plate; 13. blades; 14. impeller disk. DETAILED DESCRIPTION

[0022] 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. Example 1

[0023] As attached Figures 1 to 4 A multi-stage centrifugal fan combined guide column shown includes an outer shell 1. The outer shell 1 needs to have sufficient strength and toughness to withstand high-speed operation and possible vibration. Commonly used materials include steel plates, alloy steels or stainless steels. A threaded column 2 is provided on one side of the outer shell 1. The threaded column 2 ensures that the guide column can be firmly connected to other components of the fan. An inner shell 3 is provided inside the outer shell 1. The inner shell 3 is made of high-strength, wear-resistant and corrosion-resistant materials, such as alloy steel or stainless steel, to meet the durability requirements under high-speed operation and harsh working environments. For fans with corrosion resistance requirements, the inner wall of the inner shell 3 is usually coated with epoxy resin to enhance its corrosion resistance and extend the service life of the equipment.

[0024] There is a gap between the inner shell 3 and the outer shell 1. The double-layer guide column provides more design space, allowing engineers to optimize its shape and structure according to the principles of airflow dynamics. This helps to reduce airflow resistance and improve airflow uniformity, thereby improving the efficiency and stability of the entire fan system. The outer shell 1 and the inner shell 3 are divided into several groups of small sections. A card slot 4 is provided on one side of the inner shell 3, and a connecting block 5 is provided on the other side of the inner shell 3. The connecting block 5 is connected to the card slot 4 to form a whole of several groups of small sections composed of the outer shell 1 and the inner shell 3. These designs not only ensure the convenience of assembly, but also ensure stability during operation. The length, shape and inclination of each segment are optimized according to the corresponding impeller characteristics and airflow dynamics to achieve the best aerodynamic performance.

[0025] A closed impeller 6 is arranged at the inner center of the inner shell 3. The closed impeller 6 adopts precision casting technology to ensure that complex geometric shapes can be accurately formed while maintaining dimensional accuracy and surface finish. The blades 13 of the closed impeller 6 are designed according to the new high-efficiency blower theory. Usually, a reasonable installation angle of the blades 13 is adopted to make the flow path of the impeller long and the steady flow zone relatively long. This design helps to improve the aerodynamic performance of the closed impeller 6 and reduce the problems of backflow and boundary layer separation. A light-emitting mechanism 7 is arranged on the side of the outer shell 1 away from the threaded column 2. The laser beam emitted by the light-emitting mechanism 7 can be directly mapped on the surface inside the fan. The operator can intuitively observe the alignment of the guide column and the relative position of the internal structure of the fan, which helps to quickly and accurately detect and adjust the position of the guide column to ensure the optimal performance of the fan system.

[0026] A coolant pipe 8 is provided inside the closed impeller 6. The material of the tiny coolant channel needs to have high thermal conductivity, such as silicon, copper or aluminum. These materials can effectively transfer heat from the heat-generating components to the coolant. Commonly used coolants in the coolant pipe 8 include deionized water, ethylene glycol solution, or other coolants with specific functions. They must have good thermal stability and low viscosity to reduce pressure loss and increase flow rate. Example 2

[0027] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 4 As shown, see the following description for details:

[0028] As a preferred embodiment, an air flow channel is provided inside the threaded column 2, and the air flow channel is provided with the same diameter as the closed impeller 6, so as to further optimize the entry angle of the air flow and reduce the impact loss.

[0029] As a preferred embodiment, four groups of card slots 4 are provided, and the four groups of card slots 4 are evenly arranged along the circumferential direction of the gap between the outer shell 1 and the inner shell 3, four groups of connecting blocks 5 are provided, and the four groups of connecting blocks 5 are evenly arranged along the circumferential direction of the bottom of the inner shell 3, each group of connecting blocks 5 corresponds to each group of card slots 4, and further, multiple groups of connection points make the connection between the guide column segments more stable.

[0030] As a preferred embodiment, the light-emitting mechanism 7 includes a push switch 9, a laser lamp tube 10 and a laser light source 11. The push switch 9 is arranged on one side of the laser lamp tube 10, and the laser light source 11 is arranged on the other side of the laser lamp tube 10. The light-emitting mechanism 7 is switched on and off by pressing the laser light source 11 to trigger the push switch 9. Furthermore, a high-power blue laser diode is used as the core light source unit in the laser lamp tube 10. The laser diode is focused on a yellow phosphor target and generates white light through pumping excitation. The laser lamp tube 10 is connected to the push switch 9 through a precise mechanical structure to ensure a stable installation at one end of the guide column.

[0031] As a preferred embodiment, the closed impeller 6 includes a cover plate 12, blades 13 and an impeller disk 14. The impeller disk 14 is arranged below the cover plate 12, and the blades 13 are arranged above the impeller disk 14. The blades 13 are arranged in several groups, and each group of blades 13 is evenly arranged along the circumferential direction of the impeller disk 14.

[0032] As a preferred embodiment, the coolant pipe 8 is connected to the impeller disk 14 through the cover plate 12, and the coolant pipe 8 is spirally arranged above the impeller disk 14. Furthermore, this design can effectively cool the entire impeller, extending from the center of the impeller to the tip of the blade, which ensures that the coolant can cover all key areas and evenly remove heat.

[0033] As a preferred embodiment, the outer shell 1 is connected to the connecting block 5 through the slot 4 to form a conical guide column, and a group of closed impellers 6 are respectively arranged at the center of each small section composed of the outer shell 1 and the inner shell 3. Furthermore, according to the total number of stages of the fan, the guide column is designed to be a plurality of independent sections, and each section corresponds to the closed impeller 6 of a first-stage fan. This configuration ensures the optimal guidance of the airflow in different pressure and speed sections.

[0034] The working process of the utility model is as follows: first, the light-emitting mechanism 7 on one side of the guide column is triggered by pressing the push switch 9, so that the laser lamp tube 10 excites the laser light source 11 to emit bright light, thereby illuminating the installation path. The operator can intuitively observe the alignment of the guide column and the relative position of the internal structure of the fan. Then the guide column starts to operate, and each section of the closed impeller 6 works under the drive of the multi-stage centrifugal fan. At the same time, the coolant pipe 8 disposed on the impeller disk 14 also cools the blades 13 through the coolant to ensure efficient operation. The above is the working principle of this multi-stage centrifugal fan combined guide column.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A multi-stage centrifugal fan integrated guide column, comprising an outer shell (1), characterized in that: A threaded column (2) is provided on one side of the outer shell (1), an inner shell (3) is provided inside the outer shell (1), a gap exists between the inner shell (3) and the outer shell (1), and the outer shell (1) and the inner shell (3) are divided into a plurality of small sections, a slot (4) is provided on one side of the inner shell (3), a connecting block (5) is provided on the other side of the inner shell (3), the connecting block (5) is connected to the slot (4) so ​​that a plurality of small sections composed of the outer shell (1) and the inner shell (3) form a whole, a closed impeller (6) is provided at the inner center of the inner shell (3), a light emitting mechanism (7) is provided on the side of the outer shell (1) away from the threaded column (2), and a cooling liquid pipe (8) is provided inside the closed impeller (6).

2. A multi-stage centrifugal fan integrated guide column according to claim 1, characterized in that: An air flow channel is provided inside the threaded column (2), and the diameter of the air flow channel is the same as that of the closed impeller (6).

3. The multi-stage centrifugal fan integrated guide column according to claim 1, characterized in that: Four groups of the card slots (4) are provided, and the four groups of the card slots (4) are evenly arranged along the circumferential direction of the gap between the outer shell (1) and the inner shell (3); four groups of the connection blocks (5) are provided, and the four groups of the connection blocks (5) are evenly arranged along the circumferential direction of the bottom of the inner shell (3); each group of the connection blocks (5) corresponds to each group of the card slots (4).

4. The multi-stage centrifugal fan integrated guide column according to claim 1, characterized in that: The light emitting mechanism (7) comprises a push switch (9), a laser light tube (10) and a laser light source (11); the push switch (9) is arranged on one side of the laser light tube (10), and the laser light source (11) is arranged on the other side of the laser light tube (10); the light emitting mechanism (7) is turned on and off by pressing the laser light source (11) to activate the push switch (9).

5. The multi-stage centrifugal fan integrated guide column according to claim 1, characterized in that: The closed impeller (6) comprises a cover plate (12), blades (13) and an impeller disc (14); the impeller disc (14) is arranged below the cover plate (12); the blades (13) are arranged above the impeller disc (14); the blades (13) are arranged in a plurality of groups, and each group of blades (13) is evenly arranged along the circumferential direction of the impeller disc (14).

6. A multi-stage centrifugal fan integrated guide column according to claim 5, characterized in that: The coolant pipe (8) is connected to the impeller disc (14) via the cover plate (12), and the coolant pipe (8) is spirally shaped above the impeller disc (14).

7. The multi-stage centrifugal fan integrated guide column according to claim 1, characterized in that: The outer shell (1) is connected to the connecting block (5) through the slot (4) to form a conical guide column, and a group of closed impellers (6) are respectively arranged at the center of each small section composed of the outer shell (1) and the inner shell (3).

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