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What are the causes and troubleshooting methods for insufficient pressure in the hydraulic station s | |
1. Hydraulic pump failure Hydraulic station system pressure is insufficient, first consider the problem of hydraulic pump. Hydraulic pump is the key component to generate pressure. If the hydraulic pump fails, it will directly lead to insufficient pressure. The first possible reason is that the hydraulic pump is worn, such as the gear of the gear pump, the vane of the vane pump or the plunger of the plunger pump, which will increase the internal leakage of the pump and reduce the output pressure. The troubleshooting method is to check the outlet pressure of the hydraulic pump. If the pressure is significantly lower than the rated value, a pressure gauge can be installed at the outlet of the pump for monitoring. At the same time, check whether the speed of the hydraulic pump is normal. If the speed is insufficient, it will also cause the flow and pressure to drop. You can use a tachometer to measure the motor speed to confirm. In addition, poor oil suction of the hydraulic pump will also cause pressure problems, such as blockage of the suction pipe, dirty suction filter, etc., and it is necessary to check the status of the suction pipe and filter. 2. Hydraulic valve failure Failure of the hydraulic valve may also cause insufficient system pressure. For example, if there is a problem with the pressure regulating valve, it may not be able to adjust the pressure normally. It may be that the valve core is worn or stuck, causing the valve to be unable to accurately control the pressure. In this case, you can disassemble the pressure regulating valve and check whether the surface of the valve core has signs of wear and whether the movement is smooth. Overflow valve failure is also a common cause. If the overflow valve setting value is too low or there is a leak, the system pressure cannot be increased. It can be checked by adjusting the set pressure of the overflow valve and checking its sealing performance. There is also a directional control valve. If there is an internal leak, the pressure oil will leak into the return oil pipeline, causing pressure loss. You can check the inlet and outlet pressure difference of the valve to determine whether there is an internal leak. 3. Hydraulic oil related issues The condition of the hydraulic oil has an important impact on the system pressure. Insufficient hydraulic oil will lead to insufficient pressure, because hydraulic oil is the medium for transmitting pressure. Insufficient oil will cause some hydraulic components to fail to work properly. This can be judged by checking the oil level in the tank. In addition, the contamination of hydraulic oil should not be ignored. Impurities may block the small holes or gaps of hydraulic components, increase flow resistance, and cause pressure loss. A small amount of hydraulic oil sample can be taken for testing to check whether there are impurities, moisture, etc. If the hydraulic oil ages, its viscosity will decrease, affecting the pressure transmission effect. It can be judged whether it needs to be replaced based on the use time and performance parameters of the hydraulic oil. 4. Other possible factors In addition to the above reasons, there are some other factors that can cause insufficient pressure. For example, there are leaks in the system, including external leaks caused by aging or damage of pipe joints and seals, and internal leaks of hydraulic components. It is necessary to carefully check whether there are oil stains on the joints and seals of the pipes. For internal leaks, pressure tests and flow analysis can be used to determine. In addition, excessive load or abnormal resistance may also make the system pressure appear insufficient. It is necessary to check whether the load part is stuck or blocked to ensure that the load is within the design capacity of the hydraulic system. | |
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| Target State: All States Target City : All Cities Last Update : 07 November 2024 11:23 AM Number of Views: 36 | Item Owner : zhan Contact Email: Contact Phone: (None) |
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2024-11-22 (0.578 sec)