Frequency converter explosion-proof cabinet with temperature reducing device
A technology of explosion-proof cabinets and frequency converters, which is applied in the field of frequency conversion explosion-proof cabinets, can solve problems such as a large number of placements, complex structures, and hazards in the operation of frequency converters, and achieve the effects of making full use of resources, avoiding waste, and avoiding idleness
Inactive Publication Date: 2020-05-15
史红桂
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Problems solved by technology
Moreover, the mixed air with a large amount of water is used, which is harmful to the operation of the inverter.
According to the characteristics of the applicable technical field, the air source is dry, filtered, and constant-temperature compressed air. DCS automatically controls the pressure, temperature, and flow of the air source. The frequency converter in the explosion-proof cabinet provides corresponding parameter feedback to DCS. Ideal, but the existing explosion-proof cabinets need to install a large number of instruments and meters, the structure is relatively complicated, and the price of such explosion-proof cabinets is relatively expensive
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[0008] The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings: as shown in the figure, a frequency converter explosion-proof cabinet with a cooling device includes an explosion-proof cabinet 1, and a frequency converter 2 is installed in the explosion-proof cabinet. 1 There is an air intake pipeline 3 installed at the bottom, and a pressure release valve 4 is installed at the upper end of the air intake pipeline 3. The middle part of the air intake pipeline 3 is connected with a parallel-connected compressed air pipeline 5 and a backup air source pipeline 6. Compressed air The input end of the pipeline 5 is connected to the air compressor 7, and the compressed air pipeline 5 and the backup air source pipeline 6 are respectively pierced with an intake pressure reducing valve 8, and an air outlet pipeline 9 is installed on the top of the explosion-proof cabinet 1, The air outlet pipeline 9 is connected t...
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The present invention discloses a frequency converter explosion-proof cabinet with a temperature reducing device. The frequency converter explosion-proof cabinet with the temperature reducing device comprises an explosion-proof cabinet, a frequency converter is arranged in the explosion-proof cabinet, and an air inlet pipeline is mounted at the bottom of the explosion-proof cabinet. A pressure release valve is mounted at the tail end of the air inlet pipeline, the middle part of the air inlet pipeline is simultaneously connected with a compressed air pipeline and a standby air source pipelinewhich are arranged in parallel, and the input end of the compressed air pipeline is connected with an air compressor. The compressed air pipeline and the standby air source pipeline are respectively connected with an air inlet pressure reducing valve in a penetrating manner, an air outlet pipeline is installed at the top of the explosion-proof cabinet, and the air outlet pipeline is connected withan air using device through the air outlet pressure reducing valve. The compressed air pipeline and the standby air source pipeline are respectively provided with the branches connected with the airusing device, and each branch is connected with an electromagnetic valve.
Description
technical field [0001] The invention relates to a frequency conversion explosion-proof cabinet, in particular to a frequency conversion explosion-proof cabinet with a cooling device. Background technique [0002] Existing explosion-proof cabinets use two working states of ventilation and gas supply. A large amount of heat is generated during the operation of a high-power inverter, and the heat in the explosion-proof cabinet cannot be completely replaced by ventilation and supplementary air. What's more, it uses mixed air with a large amount of water, which is harmful to the operation of the frequency converter. According to the characteristics of the applicable technical field, the air source is dry, filtered, and constant-temperature compressed air. DCS automatically controls the pressure, temperature, and flow of the air source. The frequency converter in the explosion-proof cabinet provides corresponding parameter feedback to DCS. Ideal, however, the existing explosion-...
Claims
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IPC IPC(8): H02M1/00H05K7/20
CPCH02M1/00H05K7/20909
Inventor 史红桂
Owner 史红桂