① The viscosity and operating temperature of the working medium of the accumulator should be the same as the requirements of the working medium of the hydraulic system.
② The accumulator should be installed in a convenient place for inspection and maintenance.
③ When used to absorb shock and pulsation, the accumulator should be close to the vibration source, and should be installed in the place where shock is likely to occur.
④ The installation location should be far away from the heat source to prevent the system pressure from rising due to the expansion of the gas.
⑤ It must be fixed firmly, but it is not allowed to be welded on the host, and it should be firmly supported on the bracket or the wall. When the length-to-outer diameter ratio is too large, hoop reinforcement should also be provided. The bracket is mainly used to bear the weight of the accumulator (vertical installation, the oil port is downward) from below, and the hoop is mainly used to prevent the accumulator from swinging. The dedicated bladder-type accumulator bracket and hoop are generally provided with rubber pads and rubber sheaths. Both the bracket and the hoop can be self-made. The opening in the center of the bracket plate should be larger than the oil port and smaller than the outer diameter of the accumulator. It is best to add a rubber washer to the central opening of the bladder accumulator bracket plate. Use ordinary U-shaped hoop.
⑥ In principle, the bladder accumulator should be installed with the oil port vertically downwards. When it is installed in an inclined or horizontal position, the bladder will be in contact with the housing unilaterally due to buoyancy. danger. Therefore, generally no inclined or horizontal installation method is used. Piston accumulators should be installed vertically in strict accordance with the oil port. In horizontal installation, the weight of the piston accelerates the wear of the seal under side pressure. When horizontal installation or the oil port is installed upward, impurities in the fluid are easy to settle Accumulation will wear the inner wall of the cylinder and seals, which will seriously affect the sealing performance. If there is a connecting short tube processed by yourself, it must be clean and free of metal debris; at all stages of the installation process, solid particles such as dust must be prevented from entering the accumulator and the pipeline. Before testing and nitrogen filling, the system should clean the nitrogen filling device with alcohol, check whether there are any injuries or scratches on the valve ports, and whether the sealing devices are damaged. Once found, replace and repair in time.
安装 A non-return valve should be installed between the pump and the accumulator to prevent the oil in the accumulator from pouring back into the pump and flowing back to the tank when the pump stops working.
截止 Between the accumulator and the system, a shut-off valve should be installed. This valve is used for inflation, adjustment, inspection, maintenance or long-term shutdown. It is best to use a special accumulator safety valve group (also known as an accumulator safety valve block, which is generally integrated by a stop valve, a safety valve, an unloading valve, etc.).
后 After the accumulator is installed, it should be filled with inert gas (such as N2). It is strictly prohibited to fill with oxygen, hydrogen, compressed air or other flammable gases.
⑩The accumulator is a pressure vessel. When assembling, disassembling and handling, the internal gas must be released first.