High-speed three-dimensional flow impeller with integrated cooling structure

Abstract

This utility model relates to the field of three-dimensional flow impeller technology, specifically to a one-piece cast high-speed three-dimensional flow impeller with a cooling structure. The impeller body is integrally cast and includes a hub, blades, and a disc. The blades are disposed between the hub and the disc. A cooling channel assembly is provided within the impeller body. The cooling channel assembly includes a main cooling channel and branch cooling channels. The main cooling channel is radially disposed within the hub, and one end of each branch cooling channel is connected to the main cooling channel. Through the layered design of the main and branch cooling channels, combined with the regularly arrayed cooling pipes inside the blades, the cooling medium is precisely delivered to all parts of the blades, significantly increasing the heat exchange area, achieving uniform and efficient cooling of the blades, completely eliminating cooling blind spots, effectively reducing the overall impeller temperature, and ensuring the aerodynamic efficiency and service life of the impeller under high-temperature conditions.

Description

Technical Field

[0001] This utility model relates to the field of three-dimensional flow impeller technology, and in particular to a cast high-speed three-dimensional flow impeller with a cooling structure. Background Technology

[0002] High-speed three-dimensional flow impellers are widely used in aerospace, energy and power fields. When operating under high speed and high load conditions, the impeller will generate a lot of heat, causing the impeller temperature to rise sharply.

[0003] However, excessively high temperatures can reduce the mechanical properties of impeller materials, affecting the impeller's working efficiency and service life, and may even cause safety accidents. Currently, existing integrally cast high-speed three-dimensional flow impellers have certain defects, namely, the cooling channels mostly adopt a single radial straight channel or a simple branch structure, which makes it difficult to penetrate into the key heat-receiving areas inside the blades, resulting in insufficient heat exchange efficiency between the cooling medium and the blades, and failing to achieve uniform cooling. Furthermore, traditional cooling structures lack enhanced heat dissipation design, relying solely on the flow of the cooling medium to remove heat, which limits the heat dissipation effect under high heat flux density conditions.

[0004] Therefore, we provide a cast high-speed three-dimensional flow impeller with a cooling structure. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a cast high-speed three-dimensional flow impeller with a cooling structure, thus resolving the issues in the existing technology and meeting the requirements for efficient and stable operation of high-speed three-dimensional flow impellers under extreme working conditions.

[0006] In view of this, the present invention provides a cast high-speed three-dimensional flow impeller with a cooling structure, including an impeller body, the impeller body being integrally formed by a casting process, the impeller body including a hub, blades and a disc, the blades being disposed between the hub and the disc, and a cooling channel assembly being provided inside the impeller body;

[0007] The cooling channel assembly includes a main cooling channel and a branch cooling channel. The main cooling channel is arranged radially within the hub along the impeller body. One end of the branch cooling channel is connected to the main cooling channel, and the other end extends into the interior of the blade.

[0008] The inlet and outlet of the main cooling channel are respectively located on both ends of the wheel hub, and both the inlet and outlet are equipped with quick-connect interfaces for connecting to an external cooling system.

[0009] Preferably, the cooling channel assembly further includes a branch forming tube, one end of which is connected to the branch cooling channel and the other end of which is connected to the interior of the blade.

[0010] Preferably, the blade has multiple sets of cooling pipes arranged inside it, and the cooling pipes in each set are arranged in an orderly array.

[0011] Preferably, the impeller body is made of a rhenium-nickel-based high-temperature alloy, and a nano-composite heat-insulating coating is applied to the surface of the impeller body.

[0012] Preferably, the cooling channel assembly further includes heat sinks, which are installed within the main cooling channel.

[0013] Preferably, the heat-conducting end of the heat sink extends to the outside of the main cooling channel and is integrally connected to the wheel hub sidewall structure.

[0014] Preferably, the quick-connect interface is tightly and well-sealed with the main cooling channel.

[0015] Compared with the prior art, this utility model provides a cast high-speed three-dimensional flow impeller with a cooling structure, which has the following beneficial effects:

[0016] 1. This utility model, through the layered design of the main cooling channel and the branch cooling channel, combined with the cooling pipes arranged in a regular array inside the blade, accurately delivers the cooling medium to each part of the blade, significantly increases the heat exchange area, achieves uniform and efficient cooling of the blade, completely eliminates the cooling blind zone, effectively reduces the overall temperature of the impeller, and ensures the aerodynamic efficiency and service life of the impeller under high temperature conditions.

[0017] 2. This utility model, by adding heat sinks in the main cooling channel and integrally connecting the heat-conducting ends of the heat sinks with the wheel hub sidewall, forms a three-dimensional heat dissipation network. The heat sinks can not only directly absorb the heat in the cooling channel, but also quickly conduct it to the outside through the wheel hub sidewall, forming a synergistic effect with the convective heat exchange of the cooling medium, greatly improving the heat dissipation efficiency and meeting the heat dissipation requirements under high heat flux density conditions.

[0018] 3. This utility model, by setting a tightly sealed quick-connect interface at the inlet and outlet of the main cooling channel, ensures zero leakage of the cooling medium and enables quick assembly and disassembly of the cooling system, significantly improving the reliability and maintenance efficiency of the cooling system, avoiding the risk of cooling interruption due to connection failure, and providing a reliable guarantee for the stable operation of the impeller.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is the overall view of the present utility model;

[0021] Figure 2This is a schematic diagram of the cooling channel assembly structure proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the blade proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the heat sink and heat-conducting end installation structure proposed in this utility model.

[0024] In the diagram: 1. Impeller body; 2. Hub; 3. Blade; 31. Cooling pipe; 4. Disc; 5. Cooling channel assembly; 51. Main cooling channel; 511. Quick connection interface; 52. Branch cooling channel; 521. Branch forming pipe; 53. Heat sink; 531. Heat conduction end. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0026] Example:

[0027] Please see Figure 1 - Figure 4 This embodiment of a high-speed three-dimensional flow impeller with a cooling structure includes: an impeller body 1, which is integrally formed by a casting process; the impeller body 1 includes a hub 2, blades 3 and a disk 4; the blades 3 are disposed between the hub 2 and the disk 4; a cooling channel assembly 5 is provided inside the impeller body 1; the cooling channel assembly 5 includes a main cooling channel 51 and a branch cooling channel 52; the main cooling channel 51 is disposed radially within the hub 2; one end of the branch cooling channel 52 is connected to the main cooling channel 51, and the other end extends into the interior of the blades 3; the inlet and outlet of the main cooling channel 51 are respectively disposed on the two end faces of the hub 2, and both the inlet and outlet are provided with quick connection interfaces 511 for connecting to an external cooling system.

[0028] In this cooling channel assembly 5, the main cooling channel 51 is radially arranged within the hub 2 along the impeller body 1, and the branch cooling channel 52 connects the main cooling channel 51 with the interior of the blades 3. This layered cooling channel layout creates an efficient heat dissipation path from the hub 2 to the blades 3. The cooling medium can circulate rapidly from the inlet and outlet at both ends of the hub 2 and be diverted to the branch cooling channel 52 through the main cooling channel 51, effectively removing the heat generated by the high-speed operation of the impeller body 1, avoiding performance degradation due to local overheating, and ensuring the stable operation of the impeller body 1 under high load conditions.

[0029] The quick-connect interface 511 set at the inlet and outlet of the main cooling channel 51 enables quick and convenient connection between the impeller body 1 cooling system and external cooling equipment, greatly shortening the equipment installation and maintenance time. At the same time, the tight sealing design of the quick-connect interface 511 effectively prevents the leakage of cooling medium, ensures the sealing and reliability of the cooling system, reduces the risk of downtime due to connection failure, and improves the overall operating efficiency of the equipment.

[0030] The cooling channel assembly 5 also includes a branch forming tube 521, one end of which is connected to the branch cooling channel 52, and the other end is connected to the inside of the blade 3.

[0031] The blade 3 has multiple sets of cooling pipes 31 arranged inside, and each set of cooling pipes 31 is arranged in an orderly array according to a regular pattern.

[0032] Among them, by arranging multiple sets of cooling pipes 31 in an array inside the blades 3, the contact area between the cooling medium and the blades 3 is significantly increased, enhancing the convective heat transfer effect and improving the cooling efficiency compared to the traditional single cooling channel.

[0033] The impeller body 1 is made of a rhenium-nickel-based high-temperature alloy, and a nano-composite heat-insulating coating is applied to the surface of the impeller body 1.

[0034] The cooling channel assembly 5 also includes a heat sink 53, which is installed inside the main cooling channel 51.

[0035] Among them, the heat-conducting end 531 of the heat sink 53 extends to the outside of the main cooling channel 51 and is integrally connected to the side wall of the hub 2.

[0036] The integrated connection method makes the heat sink 53 and the side wall of the hub 2 form a rigid whole, which not only provides stable support for the heat sink 53, but also enhances the local structural strength of the hub 2 when the impeller body 1 rotates at high speed, reduces the risk of deformation caused by centrifugal force, and at the same time, the uniform heat conduction can avoid local overheating of the hub 2, reduce the thermal stress concentration caused by uneven thermal expansion and contraction, extend the fatigue life of the impeller body 1, and ensure the reliable operation of the impeller body 1 under high load conditions.

[0037] The quick-connect interface 511 is tightly connected to the main cooling channel 51 and is well-sealed.

[0038] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cast high-speed three-dimensional flow impeller with a cooling structure, characterized in that, include: Impeller body (1), the impeller body (1) is integrally formed by casting process, the impeller body (1) includes hub (2), blade (3) and disk (4), the blade (3) is disposed between hub (2) and disk (4), and a cooling channel assembly (5) is provided inside the impeller body (1). The cooling channel assembly (5) includes a main cooling channel (51) and a branch cooling channel (52). The main cooling channel (51) is arranged radially in the hub (2) along the impeller body (1). One end of the branch cooling channel (52) is connected to the main cooling channel (51), and the other end extends into the interior of the blade (3). The inlet and outlet of the main cooling channel (51) are respectively located on the two ends of the hub (2), and both the inlet and outlet are provided with quick connection interfaces (511) for connecting to the external cooling system.

2. The integrally cast high-speed three-dimensional flow impeller with a cooling structure according to claim 1, characterized in that, The cooling channel assembly (5) also includes a branch forming tube (521), one end of which is connected to the branch cooling channel (52) and the other end is connected to the inside of the blade (3).

3. A cast high-speed three-dimensional flow impeller with a cooling structure according to claim 2, characterized in that, The blade (3) has multiple sets of cooling pipes (31) arranged inside, and each set of cooling pipes (31) is arranged in an orderly array according to a regular pattern.

4. A cast high-speed three-dimensional flow impeller with a cooling structure according to claim 1, characterized in that, The impeller body (1) is made of a rhenium-nickel-based high-temperature alloy, and a nano-composite heat-insulating coating is applied to the surface of the impeller body (1).

5. A cast high-speed three-dimensional flow impeller with a cooling structure according to claim 4, characterized in that, The cooling channel assembly (5) also includes a heat sink (53) installed in the main cooling channel (51).

6. A cast high-speed three-dimensional flow impeller with a cooling structure according to claim 5, characterized in that, The heat-conducting end (531) of the heat sink (53) extends to the outside of the main cooling channel (51) and is integrally connected to the side wall of the hub (2).

7. A cast high-speed three-dimensional flow impeller with a cooling structure according to claim 1, characterized in that, The quick-connect interface (511) is tightly and well-sealed with the main cooling channel (51).

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