A hydraulic system of an energy-saving stepless pressure-regulating high-pressure pump performance test bench

Abstract

The invention relates to an energy-saving stepless pressure regulating hydraulic system for a high-pressure pump performance test bench, which is characterized by comprising a mechanical compensating hydraulic power recovery system. The mechanical compensating hydraulic power recovery system comprises a high-pressure tested pump, an alternating-current motor, a power recovery motor and a main oil tank, an oil inlet of the high-pressure tested pump is connected with an oil outlet of the main oil tank, an oil outlet of the high-pressure tested pump is connected with an oil inlet of the power recovery motor, an oil outlet of the power recovery motor is connected with the main oil tank, a power output end of the power recovery motor is connected with a power input end of the alternating-current motor, and a power output end of the alternating-current motor is connected with a power input end of the high-pressure tested pump. The hydraulic system is energy-saving and capable of reducing energy loss in the high-power hydraulic pump performance testing process greatly, reducing pressure loss, expanding flow testing range, increasing oil pressure testing range and realizing stepless pressure regulation.

Description

technical field [0001] The invention relates to a hydraulic system of an energy-saving stepless pressure-regulating high-pressure pump performance test bench, which is suitable for testing performance parameters such as pressure, flow rate, temperature and rotational speed of a high-power hydraulic pump or changes thereof, and analyzing the performance thereof. Background technique [0002] The hydraulic pump is the energy component in the hydraulic system. Its function is to convert the mechanical energy of the motor into the hydraulic energy of the fluid, and provide a certain pressure and flow of oil for the hydraulic system. It is the heart of the entire hydraulic system, and its performance directly affects Monitor the working condition of the entire hydraulic system. Therefore, it is of great significance to accurately test the performance of hydraulic pumps. Hydraulic pump performance testing is an important means to distinguish product quality, improve structural de...

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Problems solved by technology

However, since the system is not loaded, the energy generated by the hydraulic pump during the test is all converted into heat energy, resulting in waste of energy, and the heat will increase the oil temperature

For the initial investment, the cost is saved. However, from the perspective of long-term use, since the non-power recovery system converts all the electrical energy into heat energy and dissipates it during the test process, the energy loss during the life test is very huge, especially This is more prominent for high-power hydraulic pump performance test benches

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