Pressure-bearing Hole Opening Equipment System Maintenance Guide: Comprehensive Management from Daily Maintenance to Fault Prevention The meticulously maintained pressure-bearing opening equipment is the key to ensuring the safety and efficiency of pipeline operations. In industries such as petroleum, chemical engineering, and gas supply that involve continuous production, the pressure-bearing hole opening technology has become an indispensable and crucial process for pipeline maintenance and renovation. The pressure-bearing hole opening equipment can perform operations such as hole opening and connection of pipelines without disrupting normal production. The performance stability of this equipment directly affects the safety and efficiency of the entire operation. This article will delve into the comprehensive maintenance system of pressure-bearing hole opening equipment, covering from daily maintenance to fault resolution, providing a scientific and systematic equipment management solution for enterprises. I. The Importance of Maintenance for Pressure-Resistant Hole Opening Equipment The pressure-bearing hole opening equipment is a highly precise device used for operations on pressurized pipelines. Its working environment is usually very complex and may encounter harsh conditions such as high temperatures, high pressure, and corrosive media. In case the equipment malfunctions during the operation, it not only may cause production interruption but also may lead to serious safety accidents. Regular and professional maintenance can effectively extend the service life of equipment, reduce the failure rate, and enhance operational safety. According to statistics, well-maintained pressure-bearing opening equipment can reduce about 70% of sudden failures and increase about 30% of operational efficiency. On the contrary, equipment that is neglected in maintenance will not only experience a rapid decline in performance, but its maintenance costs are often several times or even dozens of times higher than the regular maintenance costs. II. Daily Maintenance and Care of Pressure-Resistant Opening Equipment Daily maintenance is a fundamental part of the equipment maintenance system. It can promptly identify and solve minor issues, thereby preventing major failures. The core contents of daily maintenance include: Pre-use inspection Before using the equipment for pressure-assisted hole opening each time, a comprehensive and systematic inspection should be conducted: confirm that all connection parts of the hydraulic system are not loose or leaking; check whether the pressure gauge indication is accurate; verify the wear condition of the cutting tools; ensure that the safety valves, relief valves, and other safety devices are working properly. It is particularly important to note that before conducting pressure-assisted hole opening operations, the pressure inside the pipeline must be accurately measured. When the pipeline pressure exceeds 1.0 MPa, special caution is required; when it exceeds 1.6 MPa, the operation is not recommended. 2. Monitoring during operation During the operation of the equipment, it is necessary to closely monitor its working condition: listen to whether the operating sound of the equipment is normal, and check for any abnormal friction or impact sounds; observe whether the vibration of the equipment is within the normal range; pay attention to whether the temperature of the motor and hydraulic system is too high; monitor whether the pressure gauge display is stable. Under normal circumstances, the pressure opening machine should operate smoothly, with the noise level remaining within the designed range. 3. Post-processing After each pressure-bearing hole opening operation is completed, the equipment should be immediately cleaned and maintained: remove the dirt and metal chips from the equipment surface; check if the drill pipe guiding part is damaged; clean the main shaft and apply lubricating grease or oil; if the operation was conducted under high temperature or in corrosive media, the sealing elements must be replaced. 4. Storage and Maintenance When the pressure-bearing hole-making machine is not in use, protective measures should be taken for the extended part of the shaft. It is best to place it in a dedicated box. During long-term storage, the entire main shaft should be fully extended, wiped clean, and coated with high-quality anti-rust lubricating grease. Then, a protective cover should be put on. If the equipment is left idle for a long time, the main shaft should be extended every three months, rotated a few times, and then retracted to maintain the flexibility of the components. III. Regular Maintenance Plan for Pressure-Resistant Opening Equipment Regular maintenance is a systematic project aimed at ensuring the long-term and reliable operation of equipment with pressurized openings. It needs to be carried out according to clearly defined time periods and execution standards. The following is the maintenance plan for key components: Hydraulic system maintenance The hydraulic system is the "heart" of the pressurized opening equipment, and its maintenance is particularly crucial. A comprehensive inspection of the hydraulic system should be conducted every six months or after 30 operations, including replacing the hydraulic oil and cleaning the oil filter. Insufficient purity of the hydraulic oil, containing impurities, is one of the main causes of hydraulic system failures. Using appropriate filtration devices to keep the hydraulic oil clean can effectively prevent hydraulic valve blockage and hydraulic motor wear. 2. Inspection of the sealing system The integrity of the sealing system directly affects the working performance of the equipment. All gasket rings should be inspected regularly. If any deformation due to long-term pressure or heat is observed, they should be replaced promptly. Check whether the paper pads on the upper and lower covers are cracked, and also check if the screws are tightened. For hydraulic valves, if the paper pad is damaged due to excessive resistance in the return oil path, the return oil pipeline problem should be resolved first before replacing the paper pad. 3. Maintenance of cutting tools and transmission mechanisms Every three to six months, the gearbox of the hole-making machine needs to be inspected and lubricating oil should be added or replaced. Check the wear condition of the hole-making tool. If the wear exceeds the specified value, it should be replaced immediately. Regularly lubricate the rack handle, check if there are any dirt or oil stains on the main shaft, and maintain an appropriate oil film. 4. Comprehensive inspection and disassembly