Six causes of oil leakage in high pressure oil pipe
Time：2020-04-29
1. Burst Pipe. The cause of high-pressure oil pipe burst is that the hose manufacturer has not checked the assembly before it leaves the factory; at least, there is no root to test pressure. It could have been spot-tested. This is not discouraged by industry standards. But as a user requirement, any leakage is intolerable. Therefore, it is necessary for the manufacturer to check the products according to the standard one by one before the products leave the factory. On the other hand, the liquid pressure due to perceived or mechanical defects is too high for the user to handle, exceeding the pressure that the pipe body plan can bear. Will burst. For example, the dump truck is severely overloaded. 2. Pipe joint leak. Pipe joints are widely used in hydraulic systems and account for a high proportion of oil spills, up to 30% ~ 40% . The reason of oil leakage of pipe joint mostly is because the fabricator did not process according to drawing and standard. Such as threaded hole processing standards, processing accuracy, etc. , the above situation once the outbreak of oil leakage is very difficult to cure, can only rely on liquid sealant or polytetrafluoroethylene to fill seal. Other causes of joint assembly problems, such as bumps or scratches on sealed parts during galvanizing or shipping, can cause leaks. On the other hand, because of cost reasons, market competition constitutes joint manufacturers unprofitable. No. 45 steel is used according to the national standard pipe joint and joint body. No. 20 steel is selected for the buckle jacket. But Limited to buyers bargain too low, and the manufacturer is not willing to lose customers. Therefore, the choice of joint steel is not standard; the composition of the hose after a period of time after the emergence of leakage. 3. Improper selection of pipe body. Different pipe body should be selected for different working environment of hydraulic system. Now the hydraulic hose is mainly divided into rubber hose and hydraulic resin hose. The resin tube is a new product. It has been proved that the hose is resinified to fully demonstrate the benefits of the product. However, some of the resin pipes have larger tortuous RADII. It's not very resilient. Other high-pressure hose is divided into oil-resistant, heat-resistant, corrosion-resistant and so on, which requires planners to choose the appropriate pipe. 4. Cause of entrapment. Now, the domestic production of hose buckle press of the manufacturers of products. Compared with foreign countries, there are some disadvantages, such as low automation, low precision, low output power and poor stability. In particular, the manual control of the home-made buckle press, more easy to form the hose joint parts of the attack leakage. But this is not easy to change in a punctual period. This more demand manufacturers pay attention to buckle technical personnel training and requirements. 5. Check the cause. Just because a hose leaks doesn't mean it hasn't been inspected. Sometimes, though verified,. However, due to the differences between the inspection equipment and the hose operating environment, it will also constitute an unknown cause of the shortcomings. For example: On the pressure machine pressure speed is slow, and pulse force is not good. And the operating hydraulic system is very different. Then is the pressure measurement staff sense of responsibility is not strong, uneasy standard inspection. 6. Equipment Reason. Improper Assembly of hoses and equipment is another primary cause of leaks. No matter the method of assembly or Torque rejection is demanding.
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