Hydraulic equipment installation, circulation flush after passing to the hydraulic system of the necessary adjustment test run, in the meet the technical parameters, under the premise of according to the practical production process requirement make necessary changes, in the heavy load cases also can run normally.
3.1 hydraulic system scheduling the preparing work before
1) need the commissioning of the hydraulic system must be in circulation flush qualified before entering debugging state.
2) hydraulic drive of the main engine of all equipment installation ends, moving parts in good condition and inspected, enter debug state.
3) control hydraulic system of electrical equipment and line up and check all installed qualified.
4) familiar with debug technology needed documents, such as hydraulic principle diagram, pipe installation drawing, system the instruction for use, system commissioning manuals etc. According to the above technical file, and check the pipeline connection is correct, but *, the selection of the oil is in accordance with the technical documentation, whether in a tank oil specified height, according to the principle diagram, the hydraulic components of the assembly that position.
5) to remove host and hydraulic equipment around the sundry, commissioning the necessary safety facilities and sign the obvious, and designate personnel responsible for management.
6) to debugging personnel should be a clear division of work, a unified command, the necessary training to operators and, when necessary, equipped with interphone, convenient contact.
3.2 hydraulic system scheduling steps
The check before 3.2.1 debugging
1) according to system diagram, assembly drawing and pipe graph examination and confirmation by each hydraulic cylinder which branch of the electromagnetic valve control.
2) electromagnetic valve no-load respectively directional control and confirm the electrical correctly, flexible, accord with action order requirements.
3) will be pumped tubing, return pipe of the globe valve open road, pump export relief valve and relief valve handle all loose in the system; Will the lowest pressure reducing valve in position.
4) flow control valves in small open position.
5) according to use specifications, within the accumulator nitrogen filling.
3.2.2 start hydraulic pump
1) with the hand pump and motor shaft coupling between, ensure there is no interference and flexible rotation.
2) the point start motor, check to determine whether hydraulic pump and motor to sign consistent, confirmation point start for several times, no abnormalities, after a press of a button motor, hydraulic pump and began to work.
3.2.3 exhaust system
Start hydraulic pump, the system pressure adjustable to 1.0 MPa or so, which controls the reversing electromagnetic valve, make the oil to the branch cycle respectively, turned the exhaust valve set in the pipeline, the gas pipeline from; When the oil spill continuous, close the purge valve. The hydraulic cylinder exhaust can be the hydraulic cylinder piston rod side of the exhaust valve open, electromagnetic valve movement, the piston rod movement, will air extrusion, up to the check point, and shut the exhaust valve. Open the other side discharge valve to hydraulic cylinder downside, no stem from the air cavity, and repeat the exhaust method, until the hydraulic cylinder the air in the row of net so far.
3.2.4 system pressure test
The system pressure test is mainly refers to the pipeline, hydraulic pressure test equipment should be in the factory. For the hydraulic pipe, the pressure of the pressure test should be 1.5 times the highest working pressure. Working pressure of high pressure system frequency 21 MPa, the pressure of the pressure test should be 1.25 times the highest working pressure. If the system itself can achieve value when the pressure of hydraulic pump may not have to use electric hydraulic test pump. Booster process should be gradually segments, not a peak, each new level, should keep a few minutes, and looking at the pipeline is normal or not. In the process of testing it is strictly prohibited to manipulate reversing valves.
3.2.5 no-load test
After testing, the system pressure to return to debug state, then press the debugging specified in the instructions content respectively, the system pressure, flow, speed, travel and adjust set, can according to one branch first after the sequence of the electric manual, including pressure relay and travel switch configuration. After the manual adjustment, should be in equipment machine, electricity, liquid alone without load test, the start testing no-load linkage.
3.2.6 load test run
Equipment to begin after the operation should be gradually increase the load, such as well, to maximum load test run. Maximum load after successful commissioning, should be timely inspection system works is normal, of pressure, noise, vibration, speed, normal temperature, level of overall check, and according to the test required to make records.
3.3 hydraulic acceptance of the system
Hydraulic system commissioning process, should according to the design content to all the design value for inspection, according to the actual record the result judge of the status of the hydraulic system, by design, user, factory, installation units to date check and accept, sign on the documents.