Hydraulic system debugging

Start the hydraulic pump, the system pressure to 1.0MPa, then control the solenoid valve, so that the oil can be evenly distributed to each branch, the exhaust valve is arranged on the movable screw pipe, exhaust gas in the pipeline; when the oil overflows, close the exhaust valve.

When the hydraulic cylinder is exhausted, the exhaust valve of the hydraulic cylinder piston rod extends out of the side, the solenoid valve moves, the piston rod moves, the air is extruded, and the valve is lifted to the upper dead point, and the exhaust valve is closed. Open the other side of the exhaust valve, so that the hydraulic cylinder down, the non rod cavity in the air discharge, repeat the above exhaust method, until the hydraulic cylinder in the air until the net.

If the hydraulic pump of the system can reach the withstand voltage, it is unnecessary to use the electric pressure test pump. In the process of boosting, it should be carried out step by step, and the peak value should not be reached once. Each level should be kept for a few minutes and the pipeline is observed to be normal. The control valve is strictly prohibited in the test process.

The system withstand voltage test mainly refers to the field pipeline, the pressure test of the hydraulic equipment should be carried out in the manufacturing plant. For hydraulic pipeline, the pressure of pressure test should be 1.5 times of the maximum working pressure. High pressure working pressure greater than 21MPa, pressure test pressure shall be 1.25 times the maximum working pressure.

When the load test equipment starts running, the load should be gradually increased. If the situation is normal, the maximum load test run can be carried out. After the successful test of the maximum load, the working condition of the system should be checked in time, and the pressure, noise, vibration, speed, temperature rise and liquid level should be comprehensively checked, and records should be made according to the test requirements.

No-load debugging pressure test after the system pressure to return to the state for debugging, and debugging according to the provisions of the content specification, respectively on the system pressure, flow, speed, stroke adjustment and setting, each branch according to the first hand after the electric order, including pressure relay and stroke switch setting. After the manual adjustment is finished, the no-load linkage test should be started after the test run of the equipment, the electricity and the liquid without load.

The acceptance test of hydraulic system in the process of design should be based on the contents of all the design values were tested, according to the actual condition of record results to determine the hydraulic system, the design, manufacturing, installation, user acceptance unit, and signed the relevant documents.

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