CN217427969U - Large-capacity water-cooling frequency converter - Google Patents
Large-capacity water-cooling frequency converter Download PDFInfo
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- CN217427969U CN217427969U CN202221428334.5U CN202221428334U CN217427969U CN 217427969 U CN217427969 U CN 217427969U CN 202221428334 U CN202221428334 U CN 202221428334U CN 217427969 U CN217427969 U CN 217427969U
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Abstract
The utility model discloses a large capacity water-cooling converter relates to a converter, has solved the too big and not good problem of heat dispersion of traditional large capacity converter volume, and its technical scheme main points are: the brake resistor cabinet, the switch cabinet, the second water-air heat exchange transformer cabinet, the second switching cabinet, the unit cabinet, the first switching cabinet, the first water-air heat exchange transformer cabinet, the control cabinet and the circulating pure water cooling unit are mutually combined from left to right to form a set of complete large-capacity water-cooled frequency converter; the first water-wind heat exchange transformer cabinet and the second water-wind heat exchange transformer cabinet have the same structure and are formed by combining a water-wind heat exchanger and a transformer cabinet; the water-air heat exchanger directly dissipates heat of the transformer cabinet to realize internal circulation heat dissipation; the unit cabinet is connected with the circulating pure water cooling unit and dissipates heat through cooling liquid provided by the circulating pure water cooling unit; through reasonable arrangement of the whole structure, the air cooling and water cooling heat dissipation modes are combined for heat dissipation, the size is reduced, and meanwhile the heat dissipation performance is improved.
Description
Technical Field
The utility model relates to a converter, more specifically say, it relates to a large capacity water-cooling converter.
Background
The frequency converter is an electric energy control device which converts a power frequency power supply into another frequency by utilizing the on-off action of an electric semiconductor device, a large amount of heat can be generated when the frequency converter works, the higher the capacity grade of the frequency converter is, the larger the generated heat is, and the heat has great influence on the service life of the frequency converter device.
Along with the increase of the motor power of domestic users, the capacity of the frequency converter is increased inevitably, at present, domestic high-capacity frequency converters generally adopt a forced air cooling heat dissipation mode, namely air-cooled high-capacity frequency converters on the market, but the air-cooled high-capacity frequency converters are large in size, occupy large-area fields, have strict requirements on the environment, are poor in heat dissipation performance, and are difficult to apply after the frequency converters reach a certain capacity level.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that traditional large capacity converter is amasss and heat dispersion is not good, and aim at provides a large capacity water-cooling converter, through reasonable arrangement complete machine structure, combines two kinds of heat dissipation mode to dispel the heat to unit cabinet and transformer, when reducing the volume, improves heat dispersion.
The utility model discloses a following technical scheme realizes:
a high-capacity water-cooled frequency converter comprises a brake resistor cabinet, a switch cabinet, a second water-air heat exchange transformer cabinet, a second switching cabinet, a unit cabinet, a first switching cabinet, a first water-air heat exchange transformer cabinet, a control cabinet and a circulating pure water cooling unit which are mutually combined from left to right; the first water-wind heat exchange transformer cabinet and the second water-wind heat exchange transformer cabinet have the same structure and are formed by combining a water-wind heat exchanger and a transformer cabinet; the water-air heat exchanger is used for dissipating heat of the transformer cabinet; and the circulating pure water cooling unit is used for radiating heat of the unit cabinet.
By adopting the technical scheme, the brake resistor cabinet, the switch cabinet, the second water-air heat exchange transformer cabinet, the second switching cabinet, the unit cabinet, the first switching cabinet, the first water-air heat exchange transformer cabinet, the control cabinet and the circulating pure water cooling unit are mutually assembled and combined from left to right to form the whole structure of the ultra-large-capacity water-cooled frequency converter; the first water-air heat exchange transformer cabinet and the second water-air heat exchange transformer cabinet have the same structure and are formed by splicing a water-air heat exchanger and a transformer cabinet, and the water-air heat exchanger can directly act on the transformer cabinet to cool the transformer cabinet so as to realize internal circulation heat dissipation; the unit cabinet carries out water cooling heat dissipation through a circulating pure water cooling unit; the heat dissipation performance of the whole machine is improved, air holes do not need to be formed outside like a traditional high-capacity frequency converter, an air duct does not need to be formed, and the size is reduced.
Further, the first transformer cabinet comprises a transformer, an air duct and a plurality of transformer cabinet centrifugal fans fixed at the top of the transformer cabinet; the water-air heat exchanger comprises an integrated air duct, an axial flow fan, a coil pipe radiator and an external water interface of the water-air heat exchanger; the coil radiator is connected with an external water interface of the water-air heat exchanger.
By adopting the technical scheme, the water-air heat exchanger and the transformer cabinet are combined and share a foundation, the water-air heat exchanger can directly radiate heat of a transformer in the transformer cabinet, heat generated by the transformer sequentially passes through the air duct, the centrifugal fan of the transformer cabinet, the integrated air duct and the axial flow fan to the coil radiator, the coil radiator is connected with an external water interface of the water-air heat exchanger, the heat is taken out by external water, and the water-air heat exchanger and the internal circulation of the transformer cabinet radiate heat to improve the radiating performance of the whole machine; and the water-wind heat exchanger and the transformer cabinet are directly combined, so that the volume of the whole machine is reduced.
Furthermore, the unit cabinet comprises a plurality of power units, a serial copper bar, a secondary input copper bar and an SMC sealing plate, wherein the serial copper bar, the secondary input copper bar and the SMC sealing plate are connected with the power units; the unit cabinet bottom is provided with a plurality of wind windows, and the inside wind channel that is provided with perpendicularly of power unit, and unit cabinet top is fixed with a plurality of unit cabinet centrifugal fan, unit cabinet centrifugal fan dispels the heat to series connection copper bar and secondary input copper bar.
By adopting the technical scheme, the heat generated by the serial copper bars and the secondary input copper bars in the unit cabinet is taken out by the unit cabinet centrifugal fan arranged at the top of the unit cabinet; when the unit cabinet centrifugal fan works, negative pressure is generated in the unit cabinet, external air flows in through the air window at the bottom of the unit cabinet and flows into each power unit through the air channel, and is taken out by the unit cabinet centrifugal fan at the top of the unit cabinet after being subjected to heat exchange with the serial copper bar and the secondary input copper bar, so that an air flow channel for air inlet at the bottom and air outlet at the top is formed, the wind resistance is reduced, and the heat dissipation effect is better.
Further, the power unit is connected with a circulating pure water cooling unit; the circulating pure water cooling unit comprises a main circulating loop; the main circulation loop comprises a main water inlet pipe and a main water return pipe; the main water inlet pipe is connected with the power unit through the water inlet hose and the water inlet quick plug, and the main water return pipe is connected with the power unit through the water return hose and the water return quick plug.
By adopting the technical scheme, the cooling liquid enters the power unit through the main water inlet pipe, the water inlet hose and the water inlet quick plug, and flows to the main water return pipe through the water return quick plug and the water return hose after heat exchange is carried out on the power unit; each power unit in the unit cabinet is connected with the main circulation loop in parallel, so that adverse effects such as high pressure drop, heat superposition and the like are avoided, and the reliability of the water cooling system is improved; and the power unit is connected with the main circulation loop through the water inlet quick plug and the water return quick plug, so that the power unit is convenient to maintain quickly, and liquid leakage is avoided.
Furthermore, the circulating pure water cooling unit is connected with a secondary cooling radiator, and the secondary cooling radiator is used for radiating heat of the circulating pure water cooling unit.
By adopting the technical scheme, the cooling liquid stored in the circulating pure water cooling unit is cooled through the secondary cooling radiator, and the cooling liquid circularly flows in the circulating loop.
Furthermore, the secondary cooling radiator is a plate heat exchanger, the secondary cooling radiator is fixed inside the circulating pure water cooling unit, and the secondary cooling radiator is connected with an external water interface of the water cooling unit fixed on the surface of the circulating pure water cooling unit.
By adopting the technical scheme, the secondary cooling radiator adopts the plate heat exchanger and is arranged in the circulating pure water cooling unit, so that the whole structure is compact, and the volume is reduced; the secondary cooling radiator can directly radiate the cooling liquid, and the radiating efficiency is improved.
Furthermore, the unit cabinet is divided into an upper layer, a middle layer and a lower layer, and five power units are transversely arranged on each layer.
By adopting the technical scheme, every five power units are connected in series to form one phase, and the three-phase power units are respectively placed in the upper, middle and lower layers, so that the electric gap between the layers is ensured, the whole structure of the equipment is compact, and the volume is reduced.
Furthermore, the main circulation loop is fixed at the bottoms of the unit cabinet, the first switching cabinet, the first water-air heat exchange transformer cabinet, the control cabinet and the circulating pure water cooling unit.
By adopting the technical scheme, the main circulation loop starts from the circulating pure water cooler, sequentially passes through the control cabinet, the first water-air heat exchange transformer cabinet and the first switching cabinet to the unit cabinets, and is fixed at the bottom of each cabinet, so that the main circulation loop is convenient to install and maintain.
Further, the diameter specification of the centrifugal fan of the transformer cabinet is 630mm, and 3 centrifugal fans are arranged.
Furthermore, the diameter specification of the centrifugal fan of the unit cabinet is 355mm, and 5 centrifugal fans are arranged.
By adopting the technical scheme, the high-capacity water-cooled frequency converter has better heat dissipation performance.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model provides a complete machine arrangement structure of large capacity water-cooling converter, by braking resistance cabinet, cubical switchboard, second water wind heat transfer transformer cabinet, second switching cabinet, unit cabinet, first switching cabinet, first water wind heat transfer transformer cabinet, switch board and circulation pure water cooling unit from a left side to the right side equipment cabinet combination each other and constitute, complete machine reasonable in design keeps compact structure when modular, the installation of being convenient for is maintained.
2. The utility model discloses carry out reasonable overall arrangement to first water wind heat transfer transformer cabinet, second water wind heat transfer transformer cabinet, unit cabinet and circulation pure water cooling unit, adopt the mode that water-cooling and forced air cooling combine to dispel the heat, first water wind heat transfer transformer cabinet all realizes the internal circulation heat dissipation with second water wind heat transfer transformer cabinet, the unit cabinet dispels the heat through unit cabinet centrifugal fan and circulation pure water cooling unit combination; under the same power density condition, the utility model discloses small, heat dispersion is good.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a first schematic view of the present invention.
Fig. 2 is a second schematic view of the present invention.
FIG. 3 is a schematic top view of the present invention
Fig. 4 is a schematic structural view of the first water-air heat exchange transformer cabinet.
Fig. 5 is a schematic front view of the unit cabinet.
FIG. 6 is a schematic diagram of a back structure of a bit cell cabinet.
Fig. 7 is a partial structure diagram of the unit cabinet.
Fig. 8 is a flow chart of the whole machine heat dissipation.
Reference numbers and corresponding part names in the figures:
1. a brake resistor cabinet; 2. a switch cabinet; 3. a second water-air heat exchange transformer cabinet; 4. a second transfer cabinet; 5. a unit cabinet; 6. a first switch cabinet; 7. a first water-air heat exchange transformer cabinet; 8. a control cabinet; 9. a circulating pure water cooling unit; 10. a water-air heat exchanger; 11. a transformer cabinet; 51. a wind window; 52. a unit cabinet centrifugal fan; 53. a power unit; 54. an air duct; 55. copper bars are connected in series; 56. a water return hose; 57. inputting the copper bar for the second time; 58. SMC closing plate; 91. an external water interface of the water chiller; 92. a primary water return pipe; 93. a main water inlet pipe; 101. an external water interface of the water-air heat exchanger; 102. an integrated air duct; 103. an axial flow fan; 104. a coil radiator; 111. a transformer; 112. an air duct; 113. transformer cabinet centrifugal fan.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Examples
The embodiment provides a large-capacity water-cooled frequency converter, which is described with reference to fig. 1 to 2, and the overall structure of the large-capacity water-cooled frequency converter is explained in detail.
As shown in fig. 1, the large-capacity water-cooled frequency converter complete machine is formed by mutually assembling and combining a brake resistor cabinet 1, a switch cabinet 2, a second water-wind heat exchange transformer cabinet 3, a second switching cabinet 4, a unit cabinet 5, a first switching cabinet 6, a first water-wind heat exchange transformer cabinet 7, a control cabinet 8 and a circulating pure water cooling unit 9 from left to right.
The first water-wind heat exchange transformer cabinet 7 and the second water-wind heat exchange transformer cabinet 3 are identical in structure and are composed of a water-wind heat exchanger 10 and a transformer cabinet 11 in a cabinet combination manner as shown in fig. 2, and the water-wind heat exchanger 10 dissipates heat of a transformer in the transformer cabinet 11 to realize complete internal circulation heat dissipation.
Taking the first water-wind heat exchange transformer cabinet 7 as an example, the internal structure of the first water-wind heat exchange transformer cabinet is shown in fig. 4 and consists of a water-wind heat exchanger 10 and a transformer cabinet 11 which are combined; a transformer 111 is installed in the transformer cabinet 11, an air duct 112 is arranged above the transformer 111, and a transformer cabinet centrifugal fan 113 is installed at the top of the transformer cabinet 11; the top of the water-air heat exchanger 10 is provided with an integrated air channel 102, an axial flow fan 103 is arranged below the integrated air channel 102, and a coil radiator 104 is fixed in a cavity below the axial flow fan 103; the heat generated by the transformer 111 passes through the air duct 112, the centrifugal fan 113 of the transformer cabinet, the integrated air duct 102, the axial flow fan 103 to the cavity where the coil radiator 104 is located in sequence, and exchanges heat with the coil radiator 104.
A water-air heat exchanger external water interface 101 is arranged below the back of the cabinet body of the water-air heat exchanger 10, as shown in fig. 3, the coil radiator 104 is connected with the water-air heat exchanger external water interface 101, external water enters the coil radiator 104 through the water-air heat exchanger external water interface 101, heat accumulated in the coil radiator 104 is taken out through the water-air heat exchanger external water interface 101, and the heat radiation performance of the whole machine is improved.
The unit cabinet 5 includes a plurality of power units 53, a serial copper bar 55, a secondary input copper bar 57 and an SMC sealing plate 58 for connecting the power units, as shown in fig. 5 and 6; the unit cabinet 5 is divided into an upper layer, a middle layer and a lower layer, five power units 53 are transversely arranged on each layer, and the power units 53 on each layer are connected through a serial copper bar 55; the whole structure of the device is compact while the electric gap between the layers is ensured.
The unit cabinet 5 adopts a mode of combining air cooling and water cooling for heat dissipation, as shown in fig. 1 and 7, the bottom of the cabinet door of the unit cabinet 5 is provided with a plurality of air windows 51, an air duct 54 is vertically arranged inside a power unit 53, and the top of the unit cabinet 5 is provided with a plurality of unit cabinet centrifugal fans 52; outside air flows into the unit cabinet 5 from the air window 51 at the bottom of the unit cabinet 5, flows through the power unit 53 through the air duct 54, upwards layer by layer, and is brought out by the unit cabinet centrifugal fan 52 at the top of the unit cabinet 5 after exchanging heat with the serial copper bar 55 and the secondary input copper bar 57 to form an airflow channel for air inlet at the bottom and air outlet at the top, so that the wind resistance is reduced, and the heat dissipation effect is good.
The water-cooling heat dissipation structure of the unit cabinet 5 is shown in fig. 7, the unit cabinet 5 is subjected to water-cooling heat dissipation by a circulating pure water cooling unit 9, and the circulating pure water cooling unit 9 comprises a main circulation loop formed by a main water inlet pipe 93 and a main water return pipe 92; the main water inlet pipe 93 is connected with the power unit 53 through a water inlet hose and a water inlet quick plug, and the main water return pipe 92 is connected with the power unit 53 through a water return hose 56 and a water return quick plug; the cooling liquid stored in the circulating pure water cooling unit 9 enters the power unit 53 through the main water inlet pipe 93, the water inlet hose and the water inlet quick plug, and flows back to the circulating pure water cooling unit 9 through the water return quick plug, the water return hose 56 and the main water return pipe 92 after heat exchange is carried out on the power unit 53; a plurality of power units 53 in the unit cabinet 5 are connected with the main circulation loop in parallel, so that adverse effects such as high pressure drop and heat superposition are avoided, and the power units 53 are connected with the main circulation loop through a water inlet quick plug and a water return quick plug, so that the power units are convenient to maintain quickly, and liquid leakage is avoided; and a water tank is arranged at the interface position of the main circulation loop and the power unit 53, so that the aim of double protection is fulfilled.
The circulating pure water cooling unit 9 is connected with a secondary cooling radiator, the secondary cooling radiator is connected with external water, and the heated cooling liquid is subjected to heat exchange with the external water through the secondary cooling radiator to dissipate heat.
In this embodiment, the heat dissipation process is as shown in fig. 8, the high-capacity water-cooled frequency converter dissipates heat in a combination of air cooling and water cooling, and the unit cabinet 5 includes a unit cabinet centrifugal fan 52, an air window 51 and an air duct 54 to form an airflow channel for air intake at the bottom and air outtake at the top for heat dissipation; the power unit 53 in the unit cabinet is radiated by cooling liquid provided by the circulating pure water cooling unit 9, and the cooling liquid is radiated by a secondary cooling radiator; the transformer cabinet 11 is cooled by the water-air heat exchanger 10.
Under a possible condition, the secondary cooling radiator adopts a plate heat exchanger and is arranged in the circulating pure water cooling unit 9, the cooling liquid can be directly radiated, the structure of the whole machine is more compact, and the radiating efficiency is improved.
The main circulation loop is fixed at the bottom of the unit cabinet 5, the first transfer cabinet 6, the first water-wind heat exchange transformer cabinet 7, the control cabinet 8 and the circulating pure water cooling unit 9, as shown in fig. 5, so that the installation and maintenance of the main circulation loop are facilitated.
According to calculation or simulation, the diameter specification of the transformer cabinet centrifugal fan 113 is 630mm, and the number of the centrifugal fans is set to be 3; the diameter specification of the unit cabinet centrifugal fan 52 is 355mm, and the heat dissipation effect is better when 5 units are set.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A high-capacity water-cooling frequency converter is characterized in that: the system comprises a brake resistor cabinet (1), a switch cabinet (2), a second water-wind heat exchange transformer cabinet (3), a second transfer cabinet (4), a unit cabinet (5), a first transfer cabinet (6), a first water-wind heat exchange transformer cabinet (7), a control cabinet (8) and a circulating pure water cooling unit (9) which are mutually combined from left to right;
the first water-wind heat exchange transformer cabinet (7) and the second water-wind heat exchange transformer cabinet (3) are identical in structure and are composed of a water-wind heat exchanger (10) and a transformer cabinet (11) in a cabinet combining mode; the water-air heat exchanger (10) is used for dissipating heat of the transformer cabinet (11); and the circulating pure water cooling unit (9) is used for dissipating heat of the unit cabinet (5).
2. A large capacity water-cooled inverter as claimed in claim 1, wherein: the transformer cabinet (11) comprises a transformer (111), an air duct (112) and a plurality of transformer cabinet centrifugal fans (113) fixed at the top of the transformer cabinet (11);
the water-wind heat exchanger (10) comprises an integrated air channel (102), an axial flow fan (103), a coil radiator (104) and an external water interface (101) of the water-wind heat exchanger;
and the coil radiator (104) is connected with an external water interface (101) of the water-air heat exchanger.
3. A large capacity water-cooled inverter as claimed in claim 1, wherein: the unit cabinet (5) comprises a plurality of power units (53), a serial copper bar (55) connected with the power units, a secondary input copper bar (57) and an SMC (sheet molding compound) sealing plate (58);
the unit cabinet (5) bottom is provided with a plurality of wind windows (51), power unit (53) inside is provided with wind channel (54) perpendicularly, unit cabinet (5) top is fixed with a plurality of unit cabinet centrifugal fan (52), unit cabinet centrifugal fan (52) are used for right it dispels the heat to establish ties copper bar (55) and secondary input copper bar (57).
4. A large capacity water-cooled inverter as claimed in claim 3, wherein: the power unit (53) is connected with the circulating pure water cooling unit (9), and the circulating pure water cooling unit (9) comprises a main circulating loop;
the main circulation loop comprises a main water inlet pipe (93) and a main water return pipe (92); the main water inlet pipe (93) is connected with the power unit (53) through a water inlet hose and a water inlet quick plug, and the main water return pipe (92) is connected with the power unit (53) through a water return hose (56) and a water return quick plug.
5. A large capacity water-cooled inverter as claimed in claim 1, wherein: and the circulating pure water cooling unit (9) is connected with a secondary cooling radiator, and the secondary cooling radiator is used for radiating the circulating pure water cooling unit (9).
6. A high-capacity water-cooled frequency converter according to claim 5, characterized in that: the secondary cooling radiator is a plate heat exchanger and is fixed inside the circulating pure water cooling unit (9), and the secondary cooling radiator is connected with a water cooler external water interface (91) fixed on the surface of the circulating pure water cooling unit (9).
7. A large capacity water-cooled inverter as claimed in claim 3, wherein: the unit cabinet (5) is divided into an upper layer, a middle layer and a lower layer, and five power units (53) are transversely arranged on each layer.
8. A high-capacity water-cooled frequency converter according to claim 4, characterized in that: the main circulation loop is fixed at the bottoms of the unit cabinet (5), the first switching cabinet (6), the first water-air heat exchange transformer cabinet (7), the control cabinet (8) and the circulating pure water cooling unit (9).
9. A high-capacity water-cooled frequency converter according to claim 2, characterized in that: the diameter specification of the transformer cabinet centrifugal fan (113) is 630mm, and 3 centrifugal fans are arranged.
10. A large capacity water-cooled inverter as claimed in claim 3, wherein: the diameter specification of the unit cabinet centrifugal fan (52) is 355mm, and 5 centrifugal fans are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221428334.5U CN217427969U (en) | 2022-06-09 | 2022-06-09 | Large-capacity water-cooling frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221428334.5U CN217427969U (en) | 2022-06-09 | 2022-06-09 | Large-capacity water-cooling frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217427969U true CN217427969U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221428334.5U Active CN217427969U (en) | 2022-06-09 | 2022-06-09 | Large-capacity water-cooling frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217427969U (en) |
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2022
- 2022-06-09 CN CN202221428334.5U patent/CN217427969U/en active Active
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