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Use and maintenance of accumulator
Time£º2021-3-8
        The use and maintenance of accumulators mainly include the installation and maintenance of accumulators, fault diagnosis and troubleshooting, and repairs. The installation of the accumulator includes pre-installation inspection, installation, nitrogen charging, etc. Correct installation, fixation and inflation are important conditions for the normal operation of the accumulator and its proper function. The measurement of parameters and the correct use of various tools and meters cannot be ignored.
        To prevent leakage of the accumulator during use, air-tightness inspections and other inspections of the airbag should be carried out on a regular basis. Therefore, daily inspection and maintenance are indispensable. Daily inspection is to use simple methods such as visual, auditory, touch and instrumentation to check the appearance and condition. During the inspection, not only check the part but also pay attention to the whole equipment. The abnormal conditions found during the inspection should be dealt with in an emergency if they prevent the accumulator from continuing to work; others should be carefully observed and recorded, and resolved during regular maintenance. Some damaged parts also need to be replaced in time. Active maintenance is a new equipment management theory put forward internationally after failure maintenance, preventive maintenance and condition maintenance. Its definition is: repair the root causes of equipment damage, so as to effectively prevent the occurrence of failures and prolong the service life of the equipment. Active maintenance is a measure taken to address the root cause of the equipment before it wears out, effectively controlling the occurrence of wear and failure, thereby greatly extending the repair cycle. Active maintenance not only guarantees the availability of hydraulic equipment and components, but also greatly reduces maintenance costs.
        The accumulator is a dangerous component in the hydraulic system, so pay special attention to safety during operation. The fault diagnosis and elimination of the accumulator includes not only the diagnosis and elimination of the fault of the accumulator itself, but also the fault diagnosis and elimination of the hydraulic system where the accumulator is located. The two are intertwined. The main work content of fault diagnosis is as follows: ¢ÙDetermine the nature and severity of the fault. According to the site conditions, determine whether there is a fault, what kind of problem (pressure, speed, motion or other), and the severity of the problem (normal, minor fault, general fault, or serious fault). ¢ÚFind the failed component and the failure location. According to the symptoms and related information, find out the point of failure for further troubleshooting. Here we mainly figure out "where the problem lies." ¢ÛFurther find out the initial cause of the failure. Such as hydraulic oil pollution, low component reliability, and unsatisfactory environmental factors. The main reason for this is to find out the external cause of the failure. ¢Ü Mechanism analysis. Carry out in-depth analysis and discussion on the cause and effect chain of the failure to understand the ins and outs of the problem. ¢İPredict the development trend of failures. According to the current situation and speed of system wear and degradation, and the theoretical and empirical data of component service life, predict the future condition of the accumulator or hydraulic system. Analysis, comparison, statistics, induction and synthesis to find out the law.
        Accumulator charging: There are usually two ways to replenish nitrogen for the accumulator: 1. When the pressure of the accumulator is lower than 8MPa, the nitrogen can be refilled with a nitrogen bottle and a nitrogen filling tool. Connect one end of the nitrogen filling tool to the nitrogen bottle. The other end is connected with the accumulator, and the gas can be filled by opening the valve of the nitrogen bottle. 2. When the operating pressure of the accumulator is higher than 8MPa, the charging can no longer be completed by the nitrogen bottle and the nitrogen charging tool. In this case, the nitrogen charging cart, the charging tool and the nitrogen bottle can be used together to supplement the accumulator Nitrogen. First connect the nitrogen cylinder with the air inlet of the nitrogen charging vehicle with a high-pressure hose. The outlet of the nitrogen charging vehicle is connected to the air inlet of the accumulator through the nitrogen charging tool. The output pressure is set on the nitrogen charging vehicle, and then opened Nitrogen bottle valve, the nitrogen charging cart is connected to the power supply, and the nitrogen charging cart is turned on to complete the charging.
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