Liquid-cooled tube-type busbar and power equipment

Abstract

This utility model discloses a liquid-cooled tubular busbar and power equipment, relating to the field of electrical equipment technology. The liquid-cooled tubular busbar includes: an inner tube for storing a liquid cooling medium; an outer tube fitted around the outer circumference of the inner tube, with a conductor positioned between the inner and outer tubes, the liquid cooling medium absorbing heat from the conductor within the inner tube; and two connectors, each located on one side of the inner tube and connected to a liquid circulation assembly. The liquid circulation assembly discharges the heated liquid cooling medium from the inner tube and introduces unheated liquid cooling medium into the inner tube. This liquid-cooled tubular busbar and power equipment, through heat exchange between the liquid cooling medium and the conductor within the inner tube, and the liquid circulation assembly's ability to introduce and discharge the heated liquid cooling medium into the inner tube, achieves heat dissipation from the conductor.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a liquid-cooled tubular busbar. Furthermore, this utility model also relates to a power equipment including the aforementioned liquid-cooled tubular busbar. Background Technology

[0002] With the development of power equipment, the market demand for high-power power equipment is increasing, especially for factories. In order to improve production efficiency, more advanced high-power production equipment is needed, and the requirements for busbars are also increasing for high-power power equipment.

[0003] A busbar is a conductive device in a power system used for transmitting, distributing, and collecting electrical energy. It is usually made of metallic materials (such as copper or aluminum). It plays a core role in the power system, connecting various electrical devices such as generators, transformers, switchgear, and distribution equipment to achieve efficient transmission and distribution of electrical energy.

[0004] Overheating of busbars can cause various problems, primarily damage to electrical equipment and safety hazards, mainly in the following aspects:

[0005] Busbar deformation: Overheating of the busbar may cause it to deform, altering its original mechanical structure and affecting its electrical performance;

[0006] Insulation aging: High temperatures can cause the insulation material near the busbar to become brittle and age, reducing insulation performance and even leading to insulation breakdown.

[0007] Damage to connecting components: Overheating may cause bolts, welds, and other parts at busbar connections to loosen or become damaged, further exacerbating poor contact.

[0008] Fire risk: Overheating of the busbar may lead to excessively high local temperatures, or even cause a fire.

[0009] Personal safety: Overheating of the busbar may cause the equipment casing to become too hot, and operators may be burned if they come into contact with it.

[0010] In conclusion, how to avoid busbar overheating is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0011] In view of this, the purpose of this utility model is to provide a liquid-cooled tubular busbar that circulates the liquid cooling medium in the inner tube through the action of a liquid circulation component, thereby preventing the busbar from overheating.

[0012] Another objective of this invention is to provide a power equipment that includes the aforementioned liquid-cooled tubular busbar.

[0013] To achieve the above objectives, this utility model provides the following technical solution:

[0014] A liquid-cooled tubular busbar, comprising:

[0015] The inner tube is used to store the liquid cooling medium;

[0016] An outer tube is fitted around the outer periphery of the inner tube, and a conductor is provided between the inner tube and the outer tube. The liquid cooling medium is used to absorb the heat of the conductor inside the inner tube.

[0017] The device has two connectors, which are respectively located on both sides of the inner tube. The connectors are connected to a liquid circulation assembly, which is used to discharge the heated liquid cooling medium from the inner tube and to introduce unheated liquid cooling medium into the inner tube.

[0018] Preferably, the connector is provided with an external thread, and the inner circumference of both ends of the inner tube is provided with an internal thread that matches the external thread.

[0019] Preferably, the connector has a plurality of frustum-shaped protrusions evenly distributed on the outer periphery of the side opposite to the external thread.

[0020] Preferably, a sealing assembly is provided between the connector and the inner tube.

[0021] Preferably, both the inner tube and the outer tube are circular tubes, and the inner tube and the outer tube are coaxially arranged. The inner tube includes at least three types: straight, L-shaped, and 7-shaped.

[0022] Preferably, the conductor is a copper component or an aluminum component.

[0023] Preferably, the connector is a stainless steel component, and the liquid cooling medium is water or ethylene glycol solution.

[0024] Preferably, the inner tube is a cuboid shell, and the inner tube and the connector are an integrated assembly.

[0025] Preferably, the inner wall of the inner tube is provided with an anti-corrosion coating.

[0026] An electrical device includes a liquid-cooled tubular busbar, wherein the liquid-cooled tubular busbar is any one of the liquid-cooled tubular busbars described above.

[0027] This utility model provides a liquid-cooled tubular busbar, in which a conductor is installed between the inner and outer tubes to transmit electricity. During the power transmission process, heat is generated, causing the temperatures of the conductor, inner tube, and outer tube to rise. The inner tube contains a sufficient amount of liquid cooling medium, the temperature of which is lower than that of the conductor. After the conductor heats up, it can transfer heat to the liquid cooling medium. Connectors are also provided at both ends of the inner tube, which are connected to a liquid circulation assembly. The liquid circulation assembly can introduce the same liquid cooling medium into the inner tube through one of the connectors. Since the inner tube contains sufficient liquid cooling medium, excess liquid cooling medium will be discharged from the other connector and enter the liquid circulation assembly for cooling. In this way, the liquid cooling medium can be circulated, that is, unheated liquid cooling medium is continuously introduced into the inner tube, and heated liquid cooling medium is discharged from the inner tube, thereby cooling the conductor and preventing the busbar temperature from becoming too high. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the liquid-cooled tubular busbar provided by this utility model;

[0030] Figure 2 This is a cross-sectional view of the liquid-cooled tubular busbar provided by this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the linear liquid-cooled tube busbar provided by this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the L-shaped liquid-cooled tube busbar provided by this utility model;

[0033] Figure 5 A schematic diagram of the structure of the 7-shaped liquid-cooled tube busbar provided by this utility model;

[0034] Figure 6 This is a schematic diagram of the connector provided by this utility model.

[0035] Figure label:

[0036] 1-Inner tube; 2-Liquid cooling medium; 3-Outer tube; 4-Conductor; 5-Connector; 6-External thread; 7-Internal thread; 8-Frustum-shaped protrusion. Detailed Implementation

[0037] 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.

[0038] The core of this invention is to provide a liquid-cooled tubular busbar, which can achieve cooling of the busbar through a liquid circulation component and a liquid cooling medium, thereby preventing the busbar from overheating.

[0039] Another core aspect of this utility model is to provide a power equipment that includes the aforementioned liquid-cooled tubular busbar.

[0040] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", and "rear" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of this application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] This application provides a liquid-cooled tubular busbar, comprising: an inner tube 1, a liquid cooling medium 2, an outer tube 3, a conductor 4, and a connector 5;

[0042] Among them, the inner tube 1 is used to store the liquid cooling medium 2;

[0043] The outer tube 3 is sleeved on the outer periphery of the inner tube 1, and a conductor 4 is provided between the inner tube 1 and the outer tube 3. The liquid cooling medium 2 is used to absorb the heat of the conductor 4 inside the inner tube 1.

[0044] There are two connectors 5, which are respectively located on both sides of the inner tube 1. The connectors 5 are connected to the liquid circulation assembly. The liquid circulation assembly is used to discharge the heated liquid cooling medium 2 in the inner tube 1 and to introduce unheated liquid cooling medium 2 into the inner tube 1.

[0045] For details, please refer to the appendix. Figure 1 A connector 5 is provided on the left and right sides of the inner tube 1. Both connectors 5 are connected to the liquid circulation assembly (not shown in the figure). The inner tube 1 contains a sufficient amount of liquid cooling medium 2. The liquid circulation assembly can introduce the same liquid cooling medium 2 into the inner tube 1 from either connector 5, and discharge the excess liquid cooling medium 2 from the inner tube 1 from the other connector 5. The liquid cooling medium 2 discharged from the inner tube 1 will also be collected by the liquid circulation assembly, cooled in the liquid circulation assembly, and after it is cooled to a specified temperature, it will be reintroduced into the inner tube 1 through the liquid circulation assembly to complete the circulation of the liquid cooling medium 2.

[0046] It should be noted that a conductor 4 is installed between the inner tube 1 and the outer tube 3. This conductor 4 is a conductive conductor, and electricity can be transmitted through the conductor 4. Since heat is generated during the power transmission process, the temperature of the conductor 4, the inner tube 1, and the outer tube 3 will rise, which may easily cause safety hazards. Therefore, liquid cooling medium 2 needs to be installed in the inner tube 1. Generally speaking, the temperature of the liquid cooling medium 2 should be lower than the temperature of the conductor 4 after the temperature rises. The heat exchange between the liquid cooling medium 2 and the inner tube 1 can remove the heat generated by the conductor 4 during the power transmission process, thereby cooling the conductor 4 or the busbar and preventing the busbar temperature from becoming too high.

[0047] Optionally, the liquid circulation assembly may include a liquid storage tank and a liquid pump. The liquid pump can pass the liquid cooling medium 2 in the liquid storage tank into the inner tube 1 and pump the excess liquid cooling medium 2 in the inner tube 1 into the liquid storage tank. For the liquid storage tank, it is preferred to have a shallow depth and a wide area to facilitate natural heat exchange between the liquid cooling medium 2 and the air. Similarly, dry ice, air cooling or other methods can be used to cool the liquid cooling medium 2 in the liquid storage tank.

[0048] Based on the above embodiment, the connector 5 is provided with an external thread 6, and the inner circumference of both ends of the inner tube 1 is provided with an internal thread 7 that matches the external thread 6.

[0049] For details, please refer to the appendix. Figure 2 With appendix Figure 6 The inner tube 1 and connector 5 are connected by threads. The threaded connection is tightened or loosened by rotating the threaded components, requiring no complex tools or equipment. Installation and disassembly are simple and quick. This disassembly capability allows for rapid replacement or adjustment of parts during maintenance and repair. Furthermore, the threaded connection provides stable connection force, resisting tensile, shear, and torsional forces, ensuring the robustness of the connected components. Moreover, by appropriately selecting the thread type and material, the strength requirements of different application scenarios can be met. Threaded connections are suitable for connecting components made of various materials, including both metallic and non-metallic materials. In addition, different thread types (such as standard threads, tapered threads, self-locking threads, etc.) can be selected according to different application scenarios to meet different requirements for sealing performance, strength, and adjustability.

[0050] Based on the above embodiment, multiple frustum-shaped protrusions 8 are evenly distributed on the outer periphery of the side of the connector 5 away from the external thread 6.

[0051] For details, please refer to the appendix. Figure 6 One end of the connector 5 is provided with an external thread 6, and the other end is provided with multiple frustum-shaped protrusions 8, which are coaxially arranged to form a "pagoda-shaped" structure. When connected to a hose, this structure has the advantages of convenient installation and disassembly, strong and reliable connection, good sealing performance, wide applicability and smooth fluid flow.

[0052] It should be noted that the pagoda-type connector features a quick-connect design. During installation, simply insert the hose into the connector and secure it with a clamp or nut. To disassemble, loosen the securing device to remove the hose. The connection between the pagoda-type connector and the hose typically incorporates a sealing gasket or a flow-rectifying zone to effectively prevent leakage. Some pagoda-type connectors also feature a flow-rectifying zone, which optimizes the fluid flow path, reduces fluid resistance, and improves delivery efficiency. This design is particularly important in applications requiring high flow rates, such as liquid cooling systems, where it can significantly reduce energy consumption.

[0053] Based on the above embodiment, a sealing component is provided between the connector 5 and the inner tube 1.

[0054] Specifically, to prevent leakage of the liquid cooling medium 2 during the process of the liquid circulation assembly introducing the liquid cooling medium 2 into the inner tube 1, a sealing assembly should be installed between the joint 5 and the inner tube 1, preferably raw rubber tape (polytetrafluoroethylene tape).

[0055] Optionally, to improve sealing, a sealant, such as an anaerobic adhesive, can be used and applied to the threaded surface to ensure that the sealant fills the thread gap. Alternatively, a rubber washer or sealing ring can be installed at the threaded connection and compressed by tightening the nut to achieve a seal.

[0056] In some embodiments, both the inner tube 1 and the outer tube 3 are circular tubes, and the inner tube 1 and the outer tube 3 are coaxially arranged. The inner tube 1 includes at least three types: straight, L-shaped, and 7-shaped.

[0057] Specifically, the length and shape of the inner tube 1 and the outer tube 3 can be processed according to requirements to meet the needs of various working conditions. Shapes include, but are not limited to, straight, L-shaped, and L-shaped. For specific structural details, please refer to the appendix. Figure 3 Appendix Figure 4 With appendix Figure 5 .

[0058] In some embodiments, conductor 4 is a copper component or an aluminum component.

[0059] Specifically, conductor 4 is usually made of copper or aluminum. The outer diameter of inner tube 1 and the inner diameter of outer tube 3 can be adjusted according to the current requirements. Compared with traditional rectangular copper busbars (aluminum busbars) or ordinary tubular busbars, copper or aluminum of the same weight can withstand a larger current and has a better heat dissipation effect, which greatly reduces the cost of power grid transmission and distribution and improves the reliability of transmission lines.

[0060] In some embodiments, connector 5 is a stainless steel component, and liquid cooling medium 2 is water or ethylene glycol solution.

[0061] Specifically, the material of connector 5 is usually stainless steel. One end of connector 5 is a pagoda-shaped connector that connects to the external water circuit, and the other end is set as an external thread interface. The thread specification matches the internal thread interface specification set on the inner circumference of the inner tube 1. It is sealed to the inner tube 1 by means of "threaded connection + Teflon tape". The liquid cooling medium 2 is usually pure water or ethylene glycol solution. It forms a circulation between the inner tube 1 and the liquid circulation component through a certain pressure (liquid pump), which removes the heat generated by the conductor 4 during power transmission, greatly improving the current carrying capacity and service life of the busbar.

[0062] It should be noted that ethylene glycol is prone to acidification during use, leading to corrosion of copper pipes. It is recommended to use a weakly alkaline corrosion inhibitor to maintain the pH of the ethylene glycol solution between 7.5 and 10.0. This weakly alkaline environment can neutralize the acidic substances generated during the oxidation of ethylene glycol, preventing them from reacting with rust to release corrosive iron ions. Furthermore, when injecting the ethylene glycol solution, the system vent should be opened simultaneously to release the air, or a vacuum should be applied before filling. This reduces the oxidizing effect of dissolved oxygen on the ethylene glycol, preventing the formation of acidic substances.

[0063] In some embodiments, the inner tube 1 is a cuboid shell, and the inner tube 1 and the connector 5 are an integrated assembly.

[0064] Specifically, this application also provides a second type of liquid-cooled tube busbar, wherein the inner tube 1 is a hollow rectangular structure with two through holes on its two side walls, and a connector 5 integrally formed with the inner tube 1 is provided at the two through holes. In other words, the cross-section of the inner tube 1 of this application can be circular, square or rectangular, and its size is easy to adjust.

[0065] It should be noted that this application uses a liquid cooling medium 2 inside the inner tube 1 and a conductor 4 between the inner tube 1 and the outer tube 3. Compared with the method of setting the conductor 4 inside the inner tube 1 and the liquid cooling medium 2 between the inner tube 1 and the outer tube 3, the heat generated by the conductor 4 can be dissipated not only through the liquid cooling medium 2, but also through the outer tube 3. The heat dissipation channels are changed from one to two, which improves the heat dissipation efficiency, maximizes the cooling of the busbar, and prevents the busbar from overheating.

[0066] Based on the above embodiment, the inner wall of the inner tube 1 is provided with an anti-corrosion coating.

[0067] Specifically, an anti-corrosion coating is applied to the inner tube 1 to prevent the inner wall of the inner tube 1 from being corroded and to improve its service life. The inner tube 1 of this application is suitable for cooling and heat dissipation of power equipment, so it needs to be inspected and maintained regularly. The pH value and concentration of the ethylene glycol solution should be inspected regularly, and it is recommended to inspect it every six months to ensure that the solution is kept in a weakly alkaline state.

[0068] In addition to the liquid-cooled tubular busbar mentioned above, this utility model also provides a power equipment including the liquid-cooled tubular busbar disclosed in the above embodiments. For the structure of other parts of the power equipment, please refer to the prior art, which will not be described in detail here.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] The present invention provides a detailed description of a liquid-cooled tubular busbar and power equipment. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A liquid-cooled tubular busbar, characterized in that, include: Inner tube (1) is used to store liquid cooling medium (2); An outer tube (3) is fitted around the outer periphery of the inner tube (1), and a conductor (4) is provided between the inner tube (1) and the outer tube (3). The liquid cooling medium (2) is used to absorb the heat of the conductor (4) inside the inner tube (1). Two connectors (5) are provided, and the two connectors (5) are respectively located on both sides of the inner tube (1). The connectors (5) are connected to the liquid circulation assembly. The liquid circulation assembly is used to discharge the heated liquid cooling medium (2) in the inner tube (1) and to introduce the unheated liquid cooling medium (2) into the inner tube (1). The connector (5) is provided with an external thread (6), and the inner circumference of both ends of the inner tube (1) is provided with an internal thread (7) matching the external thread (6). The connector (5) has multiple frustum-shaped protrusions (8) evenly distributed on the outer periphery of the side opposite to the external thread (6).

2. The liquid-cooled tubular busbar according to claim 1, characterized in that, A sealing assembly is provided between the connector (5) and the inner tube (1).

3. The liquid-cooled tubular busbar according to claim 1, characterized in that, Both the inner tube (1) and the outer tube (3) are round tubes, and the inner tube (1) and the outer tube (3) are coaxially arranged. The inner tube (1) includes at least three types: straight, L-shaped and 7-shaped.

4. The liquid-cooled tubular busbar according to claim 1, characterized in that, The conductor (4) is a copper component or an aluminum component.

5. The liquid-cooled tubular busbar according to claim 1, characterized in that, The connector (5) is a stainless steel component, and the liquid cooling medium (2) is water or ethylene glycol solution.

6. The liquid-cooled tubular busbar according to claim 1, characterized in that, The inner tube (1) is a rectangular shell, and the inner tube (1) and the connector (5) are an integrated assembly.

7. The liquid-cooled tubular busbar according to any one of claims 1 to 6, characterized in that, The inner wall of the inner tube (1) is provided with an anti-corrosion coating.

8. An electrical equipment comprising a liquid-cooled tubular busbar, characterized in that, The liquid-cooled tubular busbar is the liquid-cooled tubular busbar as described in any one of claims 1 to 7.

Images