A heat dissipation cabinet and converter

Abstract

The invention discloses a heat dissipation cabinet, a heat dissipation cabinet, a cabinet main body comprises a first heat dissipation space and a second heat dissipation space, a grid-side inductor, a heat exchanger, a fan and a capacitor are installed in the first heat dissipation space, a machine-side power module and a grid-side power module are installed in the second heat dissipation space, the machine-side inductor is installed above the first heat dissipation space; a heat exchanger or a fan is installed above the grid-side inductor, a capacitor and the grid-side power module are installed above the heat exchanger or the fan, the grid-side power module and the machine-side power module are separated from the capacitor and the fan by a partition member; the machine-side inductor of the heat dissipation cabinet is not provided with a fan, so as to prevent water leakage, the inductor and the capacitor adopt the same air duct for heat dissipation, heat dissipation is carried out through a unified large air duct, and heat dissipation is simple; a baffle is provided on the machine-side inductor to guide the wind of the large air duct into the machine-side inductor; the air duct of the capacitor cavity is closed, and a bypass air duct is provided behind the capacitor cavity to reduce wind resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and in particular to a heat dissipation cabinet and a converter. Background Art

[0002] With the increasing application of wind power and wind energy, the reliability and heat dissipation of offshore wind power is becoming more and more important. A large number of electronic components, such as IGBT, inductors and capacitors, are installed in the cabinets of power electronic equipment such as wind power converters. These components will emit a lot of heat when working, causing the temperature of themselves and the surrounding environment to rise, affecting the performance of electronic products. In severe cases, it may even cause equipment fire and other faults. Therefore, it is necessary to adopt necessary heat dissipation methods to cool the components to a certain extent, so that the components can work in an environment that meets the working temperature requirements.

[0003] Because it is an industrial equipment, the environment around the equipment is generally bad, and it is inevitable that dust, raindrops and dew will enter the equipment. The equipment itself must have good environmental adaptability. Therefore, the heat dissipation and protection of the equipment have become the current conflicting issues that need to be solved. In the existing equipment heat dissipation technology, there are two main ways to deal with the heat dissipation of the equipment:

[0004] The first is air cooling, which exchanges air inside and outside the cabinet. The advantage is high heat dissipation efficiency and low equipment heat dissipation cost; but the disadvantage is poor protection - harmful particles such as dust from the outside can easily enter the cabinet, which will have a great impact on safety regulations. In order to prevent harmful particles from entering the cabinet, high-efficiency filters are generally used, but high-efficiency filters have great wind resistance and need to be replaced regularly; Figure 1 As shown;

[0005] The second type is liquid cooling. By building a gas-liquid heat exchanger in the equipment, it is possible to avoid exchanging with the outside air, which has good protection. However, the disadvantage is that the heat of the air in the cabinet needs to be transferred through the heat exchanger, and the ambient temperature in the cabinet is higher than the outside air temperature. At the same time, in general, in order to meet the needs of heat dissipation, heat exchangers need to be built in multiple locations of the equipment. The volume occupied by heat dissipation is relatively large, and there is a greater risk of water leakage and hidden dangers, such as Figure 2 shown.

[0006] Chinese invention patent CN201010100417.7 discloses an air-cooled heat dissipation structure for a high-power converter device, in which a first and a second heat dissipation air duct are formed in the high-power converter device; power electronic devices and power electronic control components are arranged in the first air duct; grid-side inductors and converter-side inductors are arranged in the second air duct; and fans are arranged on the first and second air ducts. In this case, the power electronic devices and power electronic control components of the high-power converter device are arranged in the first air duct, and the grid-side inductors and converter-side inductors are arranged in the second air duct. The first and second air ducts are completely separated, and there is no unified air duct. Multiple air ducts increase the complexity of heat dissipation, and the converter-side inductors, grid-side inductors and power electronic control components are separately cooled. The wind in the air duct is from bottom to top, and fans are arranged on the first and second air ducts. The function of the fans increases the risk of water leakage, and the heat dissipation airflow of the large air duct cannot be introduced into the converter-side inductor.

[0007] Therefore, there is an urgent need for a machine-side inductor that does not have a fan to prevent water leakage. The inductor and capacitor use the same air duct for heat dissipation, and the heat is dissipated through a unified large air duct, which is simple in heat dissipation. A baffle is set on the machine-side inductor to direct the wind from the large air duct into the machine-side inductor. The capacitor cavity air duct is closed, and a bypass air duct is set behind the capacitor cavity to reduce the wind resistance of the heat dissipation cabinet. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a heat dissipation cabinet, in which the machine-side inductor of the heat dissipation cabinet is not provided with a fan, so as to prevent water leakage. The inductor and the capacitor adopt the same air duct for heat dissipation, and the heat dissipation is carried out through a unified large air duct, so the heat dissipation is simple; a baffle is provided on the machine-side inductor to guide the wind of the large air duct into the machine-side inductor; the air duct of the capacitor cavity is closed, and a bypass air duct is provided behind the capacitor cavity to reduce wind resistance.

[0009] In order to solve the above technical problems, the present invention provides a heat dissipation cabinet, including a cabinet body, a heat exchanger, a fan, a capacitor, a machine-side power module, a grid-side power module, a machine-side inductor, a grid-side inductor, and a partition member 1 accommodated inside the cabinet body; the cabinet body includes a first heat dissipation space and a second heat dissipation space, the first heat dissipation space is installed with a grid-side inductor, a heat exchanger, a fan and a capacitor, the second heat dissipation space is installed with a machine-side power module and a grid-side power module, and the machine-side inductor is installed above the first heat dissipation space;

[0010] The heat exchanger or fan is installed above the grid-side inductor, the capacitor and the grid-side power module are installed above the heat exchanger or fan, the machine-side power module is installed above the grid-side power module, and the grid-side power module and the machine-side power module are separated from the capacitor and the fan by a separation member 1;

[0011] In the first heat dissipation space, the grid-side inductor, the heat exchanger, the fan, the partition member 1 and the cabinet body are enclosed together, and the capacitor is arranged in the enclosed area of ​​the first heat dissipation space;

[0012] In the second heat dissipation space, the partition member 1 is enclosed with the inner wall of the cabinet body close to the machine-side power module, and the machine-side power module and the grid-side power module are arranged in the enclosed area of ​​the second heat dissipation space;

[0013] The air inside the first air duct cavity flows from bottom to top, and the air inside the second heat dissipation space flows from top to bottom;

[0014] The first heat dissipation space and the second heat dissipation space are connected to form a large circulation air duct.

[0015] Preferably, the cold air cooled by the heat exchanger first passes through the cavity of the capacitor in the first heat dissipation space, then flows out of the first heat dissipation space and enters the machine-side inductor to cool the machine-side inductor, then enters the second heat dissipation space, and flows downward back to the grid-side inductor.

[0016] Preferably, the cabinet body further comprises a second partition component disposed between the capacitor and an inner wall of the cabinet body, and a bypass air duct cavity is formed between the second partition component and the inner wall of the cabinet body to reduce system wind resistance and increase air flow.

[0017] Preferably, along the gas flow direction of the first air duct cavity, the cavity air outlet of the capacitor is provided with an air guide plate for replacing the machine-side inductor fan.

[0018] Preferably, the fan is disposed on the upper portion of the heat exchanger; and the airflow passing through the fan all passes through the heat exchanger.

[0019] Preferably, the fan is a centrifugal fan or an axial flow fan.

[0020] Preferably, the heat exchanger is an air-water heat exchanger or a refrigerant and air heat exchanger.

[0021] Preferably, a fuse is arranged between the grid-side power module and the grid-side inductor, and ventilation holes are provided on the intermediate partitions of the first air duct cavity and the second air duct cavity corresponding to the position of the fuse to form a second air duct circulation system for dissipating heat from the fuse.

[0022] In order to solve the above technical problem, the present invention further discloses a converter, which includes the above heat dissipation cabinet.

[0023] After adopting the above structure, the heat dissipation cabinet includes a cabinet body, a heat exchanger, a fan, a capacitor, a machine-side power module, a grid-side power module, a machine-side inductor, a grid-side inductor, and an air duct partition housed inside the cabinet body; the cabinet body includes a first heat dissipation space and a second heat dissipation space, the first heat dissipation space is installed with a grid-side inductor, a heat exchanger, a fan and a capacitor, the second heat dissipation space is installed with a machine-side power module and a grid-side power module, and the machine-side inductor is installed above the first heat dissipation space; the heat exchanger or the fan is installed above the grid-side inductor, the capacitor and the grid-side power module are installed above the heat exchanger or the fan, the machine-side power module is installed above the grid-side power module, and the grid-side power module and the machine-side power module are separated from the capacitor and the fan by a partition member; in the first heat dissipation space, the grid-side inductor The inductor, heat exchanger, fan, partition member and cabinet body are enclosed together, and the capacitor is arranged in the enclosed area of ​​the first heat dissipation space; in the second heat dissipation space, the partition member and the inner wall of the cabinet body close to the machine-side power module are enclosed together, and the machine-side power module and the network-side power module are arranged in the enclosed area of ​​the second heat dissipation space; the air inside the first air duct cavity flows from bottom to top, and the air inside the second heat dissipation space flows from top to bottom; the first heat dissipation space and the second heat dissipation space are connected to form a large circulation air duct; the machine-side inductor of the heat dissipation cabinet is not provided with a fan to prevent water leakage, the inductor and the capacitor adopt the same air duct for heat dissipation, and the heat dissipation is carried out through a unified large air duct, and the heat dissipation is simple; the machine-side inductor is provided with a baffle to guide the wind of the large air duct into the machine-side inductor; the capacitor cavity air duct is closed, and a bypass air duct is provided behind the capacitor cavity to reduce wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the first cabinet heat dissipation solution of the prior art of the present invention;

[0025] Figure 2 It is a structural diagram of a second cabinet heat dissipation solution of the prior art of the present invention;

[0026] Figure 3 This is an overall structural diagram of the first embodiment of the heat dissipation cabinet of the present invention;

[0027] Figure 4 This is an overall structural diagram of the second embodiment of the heat dissipation cabinet of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Embodiment 1

[0030] See also Figure 3 , Figure 3 The overall structure diagram of the first embodiment of the heat dissipation cabinet of the present invention; the present embodiment discloses a heat dissipation cabinet, including a cabinet body 14, a heat exchanger 7, a fan 6, a capacitor 5, a machine-side power module 13, a grid-side power module 12, a machine-side inductor 1, a grid-side inductor 2, and a partition member 3 accommodated inside the cabinet body; the cabinet body 14 includes a first heat dissipation space and a second heat dissipation space, the first heat dissipation space is installed with a grid-side inductor 2, a heat exchanger 7, a fan 6 and a capacitor 5, the second heat dissipation space is installed with a machine-side power module 13, a grid-side power module 12, and the machine-side inductor 1 is installed above the first heat dissipation space;

[0031] The heat exchanger 7 or the fan 6 is installed above the grid-side inductor 2, the capacitor 5 and the grid-side power module 12 are installed above the heat exchanger 7 or the fan 6, the machine-side power module 12 is installed above the grid-side power module 13, and the grid-side power module 13 and the machine-side power module 12 are separated from the capacitor 5 and the fan 6 by a separation member 3;

[0032] In the first heat dissipation space, the grid-side inductor 2, the heat exchanger 7, the fan 6, the partition member 3 and the cabinet body 14 are enclosed together, and the capacitor 5 is arranged in the enclosed area of ​​the first heat dissipation space;

[0033] In the second heat dissipation space, the partition member 13 and the inner wall of the cabinet body 14 close to the machine-side power module 13 are enclosed together, and the machine-side power module 13 and the grid-side power module 12 are arranged in the enclosed area of ​​the second heat dissipation space;

[0034] The air in the first heat dissipation space flows from bottom to top, and the air in the second heat dissipation space flows from top to bottom;

[0035] The first heat dissipation space and the second heat dissipation space are connected to form a large circulation air duct.

[0036] Embodiment 2

[0037] In this embodiment, the cold air cooled by the heat exchanger 7 first passes through the cavity of the capacitor 5 in the first heat dissipation space, then flows out of the first heat dissipation space into the machine-side inductor 1 to cool the machine-side inductor 1, then enters the second heat dissipation space, and flows downward back to the grid-side inductor 2.

[0038] Embodiment 3

[0039] See also Figure 4 , Figure 4This is an overall structural diagram of the third embodiment of the heat dissipation cabinet of the present invention; in this embodiment, the cabinet body 14 also includes a partition member 4 arranged between the capacitor 5 and the inner wall of the cabinet body 14, and a bypass air duct cavity is formed between the partition member 4 and the inner wall of the cabinet body 14 to reduce the system wind resistance and increase the air flow.

[0040] Embodiment 4

[0041] In this embodiment, based on the first embodiment, ventilation holes 9 are opened on the second air duct partition 4, and the ventilation holes 9 and the inner wall of the cabinet body 10 form a second circulation heat dissipation air duct for dual circulation heat dissipation based on the upward air duct or the downward air duct.

[0042] Embodiment 5

[0043] In this embodiment, based on the first embodiment, an air guide plate 10 for replacing the machine-side inductor fan is provided at the cavity air outlet of the capacitor 5 along the gas flow direction of the first heat dissipation space.

[0044] The fan 6 is arranged on the upper part of the heat exchanger 7 ; the airflow passing through the fan 6 all passes through the heat exchanger 7 .

[0045] In this embodiment, the fan 6 is preferably a centrifugal fan or an axial flow fan. In other embodiments, other types of fans may also be selected.

[0046] In this embodiment, the preferred heat exchanger 7 is an air-water heat exchanger or a refrigerant and air heat exchanger. In other embodiments, other types of heat exchangers may also be selected.

[0047] In this embodiment, a fuse is arranged between the grid-side power module 12 and the grid-side inductor 2, and a ventilation hole is opened at a position corresponding to the fuse 11 in a partition member between the first heat dissipation space and the second heat dissipation space, forming a second air duct circulation system for dissipating heat for the fuse 11.

[0048] Embodiment 6

[0049] This embodiment discloses a converter, which includes the heat dissipation cabinet described in any one of Embodiments 1 to 5.

[0050] The machine-side inductor of the heat dissipation cabinet is not equipped with a fan to prevent water leakage. The inductor and capacitor use the same air duct for heat dissipation, and the heat is dissipated through a unified large air duct, which is simple in heat dissipation. A baffle is set on the machine-side inductor to guide the wind from the large air duct into the machine-side inductor. The capacitor cavity air duct is closed, and a bypass air duct is set behind the capacitor cavity to reduce wind resistance.

[0051] It should be understood that the above are only preferred embodiments of the present invention, and the patent scope of the present invention cannot be limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat dissipation cabinet, comprising a cabinet body, a heat exchanger, a fan, a capacitor, a machine-side power module, a grid-side power module, a machine-side inductor, a grid-side inductor, and a partition member contained in the cabinet body; characterized in that: The cabinet body includes a first heat dissipation space and a second heat dissipation space, wherein the first heat dissipation space is equipped with a grid-side inductor, a heat exchanger, a fan and a capacitor, and the second heat dissipation space is equipped with a machine-side power module and a grid-side power module, and the machine-side inductor is installed above the first heat dissipation space; The heat exchanger or fan is installed above the grid-side inductor, the capacitor and the grid-side power module are installed above the heat exchanger or fan, the machine-side power module is installed above the grid-side power module, and the grid-side power module and the machine-side power module are separated from the capacitor and the fan by a separation member 1; In the first heat dissipation space, the grid-side inductor, the heat exchanger, the fan, the partition member 1 and the cabinet body are enclosed together, and the capacitor is arranged in the enclosed area of ​​the first heat dissipation space; In the second heat dissipation space, the partition member 1 is enclosed with the inner wall of the cabinet body close to the machine-side power module, and the machine-side power module and the grid-side power module are arranged in the enclosed area of ​​the second heat dissipation space; The air in the first heat dissipation space flows from bottom to top, and the air in the second heat dissipation space flows from top to bottom; The first heat dissipation space and the second heat dissipation space are connected to form a large circulation air duct; The cold air cooled by the heat exchanger first passes through the cavity of the capacitor in the first heat dissipation space, then flows out of the first heat dissipation space and enters the machine-side inductor to cool the machine-side inductor, then enters the second heat dissipation space, and flows downward back to the grid-side inductor; The cabinet body further comprises a second partition member disposed between the capacitor and the inner wall of the cabinet body, and a bypass air duct cavity is formed between the second partition member and the inner wall of the cabinet body to reduce the wind resistance of the system and increase the air flow rate; A fuse is arranged between the grid-side power module and the grid-side inductor, and a partition member between the first heat dissipation space and the second heat dissipation space is provided with ventilation holes at positions corresponding to the fuses, so as to form a second air duct circulation system for dissipating heat from the fuses.

2. The heat dissipation cabinet according to claim 1, characterized in that: Along the air flow direction of the first heat dissipation space, the cavity air outlet of the capacitor is provided with an air guide plate for replacing the machine-side inductor fan.

3. The heat dissipation cabinet according to claim 1, characterized in that: The fan is arranged on the upper part of the heat exchanger; the airflow passing through the fan all passes through the heat exchanger.

4. The heat dissipation cabinet according to claim 1, characterized in that: The fan is a centrifugal fan or an axial flow fan.

5. The heat dissipation cabinet according to claim 1, characterized in that: The heat exchanger is an air-water heat exchanger or a refrigerant and air heat exchanger.

6. A converter, characterized in that: The converter comprises the heat dissipation cabinet according to any one of claims 1 to 5.

Images