A variable voltage energy-saving drive that automatically adapts to the load

Abstract

The invention provides a pressure-changing energy-saving drive capable of automatically adapting to the load. The drive comprises a hydraulic sensing component (11), a pressure reduction stage, a pressure boost stage and two energy accumulators. The input end of the hydraulic sensing component is connected with the output end of the pressure reduction stage, and the output end of the hydraulic sensing component is connected with the input end of the pressure boost stage. The input end of the pressure reduction stage is connected to an oil supply channel of a constant-pressure network. The output end of the pressure boost stage is connected to the load end through the first energy accumulator. Oil return channels of the pressure reduction stage and the pressure boost stage are integrated to form one channel to be connected to an oil tank through the second energy accumulator. By the adoption of quick switching of high-speed switching valves, the pressure boost function, the pressure reduction function and the driving function are fulfilled by one device, matching between the pressure and the flow needed by the load is achieved, energy is stored when the low load exists, the stored energy is utilized when the high load exists, and reasonable utilization of the energy is achieved. Meanwhile, the pressure reduction stage serves as the driving stage of the pressure boost stage when the pressure reduction stage does not work, the pressure boost stage serves as the driving stage of the pressure reduction stage when the pressure boost stage does not work, and therefore the complete driving function is fulfilled, closed-loop control can be achieved, and the pressure-changing energy-saving drive is complete in function.

Description

technical field [0001] The invention relates to a driver, in particular to a variable-voltage energy-saving driver that automatically adapts to loads. Background technique [0002] At present, due to its high transmission capacity, flexible application, and the ability to achieve a wide range of stepless speed regulation, it is widely used in the manufacturing industry. In general industrial applications, the load on the hydraulic system varies dynamically with the needs of the task. In order to ensure the normal operation of the system, the pressure source is generally designed according to the maximum working pressure, so the system pressure is lower than the maximum output pressure of the pressure source most of the time during work, and the excess pressure is converted into heat energy and consumed in the way of overflow and return , which not only wastes energy, but also increases the temperature of the hydraulic medium and increases the cost of the cooling system. Fo...

AI Technical Summary

Problems solved by technology

The application of switch hydraulic source makes the hydraulic system more complicated, increases the cost of design and processing, and makes the system control more difficult

The most important thing is that its voltage regulation function cannot automatically adapt to the load demand, and it cannot directly realize closed-loop control, which is not practical for variable load applications.

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