A cooling device for wind power inverters

Abstract

This utility model discloses a cooling device for a wind power inverter, belonging to the field of cooling devices. It includes a base, an inverter body, a cover, a support frame, and a serpentine cooling pipe. One end of the serpentine cooling pipe is connected to a liquid cooling pipe reversing structure. The liquid cooling pipe reversing structure includes a main circulation pipe, a pressure sensor, a reversing metal ball, a normal operating pipe, a spare pipe, a support base, and an electric push rod. A pressure sensor is installed on the outside of the main circulation pipe. One end of the main circulation pipe is connected to the normal operating pipe and the spare pipe. An arc-shaped groove is formed between the normal operating pipe and the spare pipe, and a reversing metal ball is installed on the arc-shaped groove. A support base is installed on the outside of the normal operating pipe and the spare pipe, and an electric push rod is installed on one side of the support base. Through the coordinated use of these devices, it can better adapt to the complex environments common in wind power scenarios, such as vibration and high / low temperatures, ensuring the stable operation of the cooling system under harsh conditions.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, specifically a cooling device for a wind power inverter. Background Technology

[0002] In wind power generation systems, wind inverters are the core equipment for power conversion. During operation, components such as power modules and reactors generate a lot of heat, which needs to be dissipated in time through a liquid cooling system.

[0003] Traditional liquid cooling pipelines are mostly designed with a single path. If a leak occurs, it may cause cooling interruption, leading to inverter overheating and shutdown. In severe cases, it may even cause equipment damage and power generation loss. Some improved solutions use electric valves to switch to backup pipelines, but this requires high-precision sensors and complex control systems. This is not only costly, but also prone to failure in harsh environments such as vibration and temperature differences in wind power scenarios. In addition, the existing commutation structure has insufficient sealing reliability and delayed switching response, making it difficult to meet the high requirements of wind power equipment for continuous operation.

[0004] Therefore, this utility model provides a wind power inverter cooling device to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a cooling device for a wind power inverter, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a wind power inverter cooling device, comprising a base, an inverter body, a cover, a support frame, and a serpentine cooling pipe. One end of the serpentine cooling pipe is connected to a liquid cooling pipeline reversing structure. The liquid cooling pipeline reversing structure includes a main circulation pipe, a pressure sensor, a reversing metal ball, a normal operating pipe, a spare pipe, a support base, and an electric push rod. A pressure sensor is installed on the outside of the main circulation pipe. One end of the main circulation pipe is connected to the normal operating pipe and the spare pipe. An arc-shaped groove is formed between the normal operating pipe and the spare pipe. A reversing metal ball is installed on the arc-shaped groove. A support base is installed on the outside of the normal operating pipe and the spare pipe. An electric push rod is installed on one side of the support base.

[0009] As a preferred technical solution of this application, the surface of the support frame is connected to an adaptive clamping mechanism, which includes a connecting seat, a metal plate, an adjusting bolt, a pin, and a clamping ring. The surface of the connecting seat is provided with a U-shaped groove, and the surface of the U-shaped groove is symmetrically mounted with metal plates through the adjusting bolt.

[0010] As a preferred technical solution of this application, the metal sheet has a through hole inside, and a pin is installed in the through hole. The metal sheet is connected to a clamping ring through the pin.

[0011] As a preferred technical solution of this application, the bottom of the inverter body is connected to a base, the top of the inverter body is connected to a cover, and the inverter body is installed inside the inverter body.

[0012] As a preferred technical solution of this application, the support frame is equipped with a serpentine cooling pipe inside, and the inner surface of one side of the support frame is connected to the support base by a hinge.

[0013] As a preferred technical solution of this application, there are two clamping rings, and a serpentine cooling pipe is installed between the two clamping rings, with the surface of the clamping rings and the surface of the serpentine cooling pipes in contact with each other.

[0014] As a preferred technical solution of this application, the normal working pipe and the spare pipe are installed on the interface base, and the interface base is installed inside the support.

[0015] (III) Beneficial Effects

[0016] This structure utilizes the combined effect of mechanical construction and gravity to switch pipelines, significantly reducing reliance on electronic components. This lowers the likelihood of malfunctions caused by sensor failures or program errors, enabling it to better adapt to complex environments such as vibration and extreme temperatures common in wind power scenarios and ensuring the stable operation of the cooling system under harsh conditions.

[0017] When a leak occurs in the pipeline, the structure can switch from the normal operating pipe to the standby pipe in a very short time. The standby pipe can be put into use immediately, effectively avoiding inverter overheating and shutdown caused by cooling interruption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a cooling device for a wind power inverter.

[0019] Figure 2 This is a schematic diagram of the reversing structure of the liquid cooling pipeline in a wind power inverter cooling device.

[0020] Figure 3 This is an enlarged structural diagram of the reversing structure of the liquid cooling pipeline in a wind power inverter cooling device.

[0021] Figure 4 A structural separation diagram of the reversing structure of the liquid cooling pipeline in a wind power inverter cooling device;

[0022] Figure 5 This is a schematic diagram of the adaptive clamping mechanism in a wind power inverter cooling device.

[0023] In the picture:

[0024] 1. Base; 2. Inverter body; 3. Cover; 4. Support frame; 5. Serpentine cooling pipe; 6. Liquid cooling pipe reversing structure; 601. Main circulation pipe; 602. Pressure sensor; 603. Reversing metal ball; 604. Normal operating pipe; 605. Spare pipe; 606. Support seat; 607. Electric push rod; 7. Adaptive clamping mechanism; 701. Connecting seat; 702. Metal sheet; 703. Adjusting bolt; 704. Pin; 705. Clamping ring. 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] This utility model provides a cooling device for a wind power inverter, including a base 1, an inverter body 2, a cover 3, a support frame 4, a serpentine cooling pipe 5, a liquid cooling pipe reversing structure 6, and an adaptive clamping mechanism 7. Figure 1-5 As shown, the inverter body 2 is fixed to the positioning groove of the base 1 by countersunk bolts at the four corners of the bottom. The bolt connection can achieve a stable assembly of the two. The positioning groove ensures accurate installation position and prevents displacement during operation. Silicone shock-absorbing pads are installed between the two to reduce vibration transmission during equipment operation, reduce noise and protect internal components. The top cover 3 of the inverter body 2 is connected by a combination of nylon buckles and hex bolts. The buckles are easy to open and close quickly, and the bolts enhance the reliability of the connection, taking into account both maintenance convenience and structural stability. The inverter body inside the inverter body 2 is connected to the external circuit through a copper busbar. The copper busbar has excellent conductivity, reduces current transmission loss and ensures power conversion efficiency. Thermal grease is applied to the contact area between its heat dissipation surface and the serpentine cooling pipe 5.

[0027] The support frame 4 is fixed to the inner wall of the inverter body 2. The support frame 4 can provide stable support for the serpentine cooling pipe and ensure good contact between the cooling pipe and the heat-generating components. The inside of the support frame 4 is reserved with an arc-shaped groove that matches the serpentine cooling pipe 5. Fluororubber pads are embedded in the grooves. This not only enhances the fit between the cooling pipe and the support frame 4, but also avoids direct metal contact and wear. The fluororubber material can also withstand the operating temperature of the cooling system.

[0028] A pressure sensor 602 is installed on the outside of the main circulation pipe 601. The pressure sensor 602 monitors the pressure changes in the main circulation pipe 601 in real time, providing a basis for judging pipeline leakage. The connection is sealed to prevent coolant leakage at the sensor installation location, ensuring the system's airtightness. The end of the main circulation pipe 601 is connected to the normal operating pipe 604 through a flange. The flange connection facilitates disassembly and maintenance, while ensuring the airtightness and strength of the pipeline connection, ensuring stable coolant delivery. The two pipelines are fixed through an interface base. The interface base integrates the normal operating pipe 604 and the spare pipe 605 together, ensuring the relative position stability of the two and providing a reliable basis for the operation of the reversing metal ball 603.

[0029] A reversing metal ball 603 is placed in an arc-shaped groove between the two pipelines. The arc-shaped groove provides a rolling path for the reversing metal ball 603, ensuring that the metal ball can accurately move to the target position under the action of gravity to realize pipeline switching. A guide layer is laid at the bottom of the groove. The guide layer can reduce the frictional resistance when the metal ball rolls, making the reversing action smoother and faster. The support base 606 is connected to the support frame 4 through a pin. The two ends of the pin are fixed with retaining rings. The retaining rings can prevent the pin from moving axially and ensure the stability of the connection. The electric push rod 607 is connected to the support base 606 and the interface base respectively. The electric push rod 607 acts as a power source and can push the support base 606 to tilt the interface base, so that the reversing metal ball 603 can complete the reversing action under the action of gravity.

[0030] The connecting seat 701 is fixed to the surface of the support frame 4. The support frame 4 provides a mounting base for the metal plate 702 and the clamping ring 705, ensuring the stability of the entire adaptive clamping mechanism 7. The metal plate 702 is installed in the U-shaped groove of the connecting seat 701 by adjusting bolts 703. The adjusting bolts 703 can adjust the initial state of the metal plate 702 so that the clamping ring 705 obtains a suitable initial clamping force. The U-shaped groove provides space for the deformation of the metal plate 702. The clamping ring 705 is connected to the metal plate 702 by a pin 704. The 02 connection, pin 704 connects the two to achieve linkage, so that the deformation energy of metal sheet 702 is transferred to clamping ring 705, driving clamping ring 705 to move. Anti-slip pads are attached to the inner surface of clamping ring 705 to increase the friction between clamping ring 705 and serpentine cooling pipe 5, prevent cooling pipe from sliding, and enhance the fit between the two to improve heat dissipation. Clamping ring 705 fits against the outer wall of serpentine cooling pipe 5. This operation ensures good contact between cooling pipe and heat-generating components through clamping force, ensuring heat dissipation efficiency.

[0031] When the pressure sensor 602 detects an abnormal pressure in the main circulation pipe 601, the controller drives the electric push rod 607 to tilt the interface base, causing the reversing metal ball 603 to roll to the interface of the normal operating pipe 604 to achieve sealing. At the same time, the backup pipe 605 is connected to ensure the continuous operation of the cooling system and prevent the inverter from shutting down due to overheating. When the temperature changes, the metal sheet 702 deforms, causing the clamping ring 705 to adjust the clamping force. Throughout the process, the serpentine cooling pipe 5 always maintains good contact with the heat-generating components, ensuring stable heat dissipation efficiency and adapting to the heat dissipation requirements under different temperature conditions.

[0032] Working principle: The liquid cooling pipeline reversing structure 6 uses gravity as its core power source and combines mechanical linkage to achieve automatic pipeline switching. The main circulation pipe 601 is connected to the normal working pipe 604 and the backup pipe 605 through the interface base. An arc-shaped groove is set in the intersection area of ​​the three pipes, with a reversing metal ball 603 inside. When the pressure sensor 602 detects an abnormal pressure in the main circulation pipe 601, such as a leak causing a sudden drop in pressure, the controller triggers the electric push rod 607 to move, pushing the support base 606 to rotate around the pin shaft, causing the interface base to tilt at a preset angle. At this time, the reversing metal ball 603 rolls along the guide layer in the arc-shaped groove under the action of gravity, accurately sealing the interface of the normal working pipe 604 of the faulty pipeline, while opening the passage of the backup pipe 605, realizing seamless switching of the coolant circulation path.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wind power inverter cooling device, comprising a base (1), an inverter body (2), a cover (3), a support frame (4), a serpentine cooling pipe (5), characterized in that: One end of the serpentine cooling pipe (5) is connected to a liquid cooling pipe reversing structure (6). The liquid cooling pipeline reversing structure (6) includes a main circulation pipe (601), a pressure sensor (602), a reversing metal ball (603), a normal operating pipe (604), a spare pipe (605), a support base (606), and an electric push rod (607). The pressure sensor (602) is installed on the outside of the main circulation pipe (601). One end of the main circulation pipe (601) is connected to the normal operating pipe (604) and the spare pipe (605). An arc-shaped groove is opened between the normal operating pipe (604) and the spare pipe (605). The reversing metal ball (603) is installed on the arc-shaped groove. The support base (606) is installed on the outside of the normal operating pipe (604) and the spare pipe (605). An electric push rod (607) is installed on one side of the support base (606).

2. The wind power inverter cooling device according to claim 1, characterized in that: The surface of the support frame (4) is connected to an adaptive clamping mechanism (7). The adaptive clamping mechanism (7) includes a connecting seat (701), a metal plate (702), an adjusting bolt (703), a pin (704), and a clamping ring (705). A U-shaped groove is provided on the surface of the connecting seat (701), and the metal plate (702) is symmetrically installed on the surface of the U-shaped groove through the adjusting bolt (703).

3. A wind power inverter cooling device according to claim 2, characterized in that: The metal sheet (702) has a through hole inside, and a pin (704) is installed in the through hole. The metal sheet (702) is connected to the clamping ring (705) through the pin (704).

4. The wind power inverter cooling device according to claim 1, characterized in that: The bottom of the inverter body (2) is connected to a base (1), the top of the inverter body (2) is connected to a cover (3), and the inverter body is installed inside the inverter body (2).

5. A wind power inverter cooling device according to claim 1, characterized in that: The support frame (4) is equipped with a serpentine cooling pipe (5), and the inner surface of one side of the support frame (4) is connected to the support base (606) by a hinge.

6. A wind power inverter cooling device according to claim 3, characterized in that: There are two clamping rings (705), and a serpentine cooling pipe (5) is installed between the two clamping rings (705). The surface of the clamping ring (705) and the surface of the serpentine cooling pipe (5) are in contact with each other.

7. A wind power inverter cooling device according to claim 1, characterized in that: The normal operating tube (604) and the spare tube (605) are mounted on the interface base, which is installed inside the support base (606).

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