CN203135691U - Water-cooled high-voltage frequency converter unit cabinet with auxiliary heat radiation apparatus - Google Patents

Abstract

The utility model discloses a water-cooled high-voltage frequency converter unit cabinet with an auxiliary heat radiation apparatus. The water-cooled high-voltage frequency converter unit cabinet comprises a frequency converter housing (1), a plurality of power units (2), a cold-hot air isolation baffle plate (3), an empty-water heat exchanger (4), a cold water outlet (5) of the empty-water heat exchanger, a hot water outlet (6) of the empty-water heat exchanger, an empty-water cold-hot exchange zone (7), a circulation blower fan (8), a hot air zone (9) and a cold air zone (10). An auxiliary heat radiation apparatus provides auxiliary heat radiation for small electronic components, conducting wires and joints in the frequency converter unit during working, and eliminates negative pressure in the cabinet during normal operation of the frequency converter. In this way, dust can not enter into the frequency converter, and failure rate of the frequency converter is lowered.

Description

A water-cooled high-voltage inverter unit cabinet with an auxiliary cooling device

technical field

The utility model belongs to the field of high-voltage frequency conversion, and in particular relates to a water-cooled high-voltage frequency converter unit cabinet capable of assisting in cooling heat generated by small electronic components, wires and joints in the unit during work. the

Background technique

In the known water-cooled frequency converter, the finned air-cooled radiator of its power unit is replaced with a water-cooled radiator, and the heat generated by the main heating elements such as IGBT and rectifier bridge is exchanged by circulating water. However, the heat generated by the small electronic components (electrolytic capacitors, resistors), wires and connectors inside the unit continues to be exhausted outdoors by traditional cooling fans, so that the sealing of the unit cabinet cannot be guaranteed, causing dust to continuously enter the inverter, which will It will destroy the insulation of the inverter, thereby increasing the failure rate of the inverter. the

Contents of the invention

Purpose of the invention: To design a water-cooled high-voltage inverter unit cabinet, which can not only assist in cooling the heat generated by the small electronic components, wires and joints in the inverter unit during work, but also enable the inverter to work normally. Negative pressure to achieve the goal that dust cannot enter the inverter. the

Technical solution: A water-cooled high-voltage inverter unit cabinet equipped with an auxiliary cooling device, including an inverter housing 1, several power units 2, cold-hot air isolation baffle 3, air-water heat exchanger 4, air-water exchange Heater cold water inlet 5, air-water heat exchanger hot water outlet 6, air-water cooling heat exchange area 7, circulation fan 8, hot air area 9, cold air area 10, characterized in that the power unit 2, cooling- The hot air isolation baffle 3, the air-water heat exchanger 4, the circulating fan 8, the hot air area 9, and the cold air area 10 are all located inside the airtight inverter housing 1; Divided into hot air area 9 and cold air area 10; air-water heat exchanger 4 and circulation fan 8 are placed under the power unit 2; air-water heat exchanger inlet 5 for cold water, air-water heat exchanger outlet for hot water 6 are respectively installed on the air-water heat exchanger 4, respectively connected to the high-pressure pipe and the low-pressure pipe of the circulating water, and circulate continuously for cold-heat exchange; there is an air-water heat exchanger below the air-water heat exchanger 4 Cold and heat exchange area 7;

Working principle: When the frequency converter is working normally, the heat generated by its IGBT, rectifier bridge and other main heating components has been exchanged by water cooling (it is a common technology and will not be discussed here). As shown in Figure 1, under the action of the circulating fan 8 and the cold-hot air isolation baffle 3, the air in the inverter unit cabinet will continuously form a circulating airflow along the direction of the arrow; there are some small electronic components (such as capacitors) in the power unit 2 , resistance, inductance, etc.) will also generate a small amount of heat during work, which cannot be taken away under the above-mentioned water cooling conditions, and flows to the hot air area 9 under the action of the circulating air flow, and passes through the air-water heat exchanger 4 in the air- The water-cooled heat exchange area 7 is cooled, and the cooled air flows to the cold air area 10, passes through a plurality of power units 2 respectively, and brings the heat to the hot air area 9 again, and the cycle repeats. the

The advantages and beneficial effects of the utility model: the utility model can not only assist the cooling of the heat generated by the small electronic components, wires and joints in the inverter unit during work, but also make the inverter work normally by installing an auxiliary cooling device. There is no negative pressure in the cabinet during operation, so that dust cannot enter the inverter and reduce the failure rate of the inverter. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. the

A water-cooled high-voltage inverter unit cabinet equipped with an auxiliary heat dissipation device, including an inverter housing 1, several power units 2, cold-hot air isolation baffles 3, air-water heat exchanger 4, air-water heat exchanger inlet Cold water outlet 5, hot water outlet of air-water heat exchanger 6, air-water cooling heat exchange area 7, circulation fan 8, hot air area 9, cold air area 10, characterized in that power unit 2, cold-hot air isolation block Plate 3, air-water heat exchanger 4, circulation fan 8, hot air area 9, and cold air area 10 are all located inside the airtight inverter housing 1; the cold-hot air isolation baffle 3 divides the space in the inverter housing 1 into hot air Zone 9, cold air zone 10; the air-water heat exchanger 4 and the circulation fan 8 are installed under the power unit 2; the air-water heat exchanger inlet 5 and the air-water heat exchanger outlet 6 are respectively installed On the air-water heat exchanger 4, they are respectively connected to the high-pressure pipe and the low-pressure pipe of the circulating water, and flow continuously for cold-heat exchange; there is an air-water cooling heat exchange under the air-water heat exchanger 4 District 7. the

Working principle: When the frequency converter is working normally, the heat generated by its IGBT, rectifier bridge and other main heating components has been exchanged by water cooling (it is a common technology and will not be discussed here). As shown in Figure 1, under the action of the circulating fan 8 and the cold-hot air isolation baffle 3, the air in the inverter unit cabinet will continuously form a circulating airflow along the direction of the arrow; there are some small electronic components (such as capacitors) in the power unit 2 , resistance, inductance, etc.) will also generate a small amount of heat during work, which cannot be taken away under the above-mentioned water cooling conditions, and flows to the hot air area 9 under the action of the circulating air flow, and passes through the air-water heat exchanger 4 in the air- The water-cooled heat exchange area 7 is cooled, and the cooled air flows to the cold air area 10, passes through three power units 2 respectively, and brings the heat to the hot air area 9 again, repeating the cycle. the

Claims (1)

1. A water-cooled high-voltage inverter unit cabinet equipped with an auxiliary heat dissipation device, including the inverter shell (1), several power units (2), cold-hot air isolation baffles (3), air-water heat exchanger ( 4), air-water heat exchanger cold water inlet (5), air-water heat exchanger hot water outlet (6), air-water cooling heat exchange area (7), circulating fan (8), hot air area ( 9), cold air area (10), characterized by power unit (2), cold-hot air isolation baffle (3), air-water heat exchanger (4), circulating fan (8), hot air area (9) , cold air area (10) are located inside the airtight inverter housing (1); the cold-hot air isolation baffle (3) divides the space inside the inverter housing (1) into a hot air area (9) and a cold air area (10) ; Place the air-water heat exchanger (4) and circulation fan (8) under the power unit (2); 6) Installed on the air-water heat exchanger (4), respectively connected to the high-pressure pipe and low-pressure pipe of the circulating water, continuous circulation flow, cold-heat exchange; under the air-water heat exchanger (4) There is an air-to-water cooled heat exchange zone (7). the

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