The system is operated using a single-stage pump. However, when the resistance in the ash pipeline is high, a two-stage series pump should be used instead of liquid-pitch shift adjustment. To regulate the pump flow, you can adjust the diameter of the cutting impeller or use valve throttling. Measuring the contact resistance at the joint is the most effective method to assess the quality of the connection, so it's essential to measure the contact resistance after the cable connector has been manufactured.
When connecting the cable connector to an external source, ensure that the terminal is properly connected to the outside after crimping. If connecting copper-to-copper, direct connection is acceptable, but for copper-to-aluminum connections, a copper-aluminum transition joint must be used. The screw size should match the terminal hole; never use a smaller screw or drill into the terminal, as this can weaken the joint. Before making the connection, secure the cable head to prevent any mechanical stress on the electrical connector. For outdoor joints, apply vaseline to protect against moisture and corrosion.
Annual inspection and maintenance are crucial. Each year, the cable joint should be removed, cleaned to remove oxidation, and re-lubricated with vaseline. Any rusted screws should be replaced. After tightening the screws, perform a contact resistance test to ensure proper connectivity. As power demand increases, overheating at the joints has become a serious issue. Analysis shows this is mainly due to improper construction methods, leading to reduced contact areas, poor handling of contact resistance, and even some copper-aluminum joints not being properly separated. Additionally, outdated production techniques and tools have contributed to these problems. Therefore, it's important to focus on mastering the correct procedures for manufacturing and maintaining cable connectors, while also improving the responsibility and skills of maintenance personnel to effectively address the issue of overheating joints.
Proper installation and regular maintenance are key to ensuring long-term reliability and safety. Always follow manufacturer guidelines, use the right tools, and conduct thorough inspections. By doing so, you can significantly reduce the risk of failures and extend the lifespan of your electrical systems.
Diesel engine is an engine that burns diesel fuel to obtain energy release. The working process of a diesel engine is actually the same as that of a gasoline engine, and each working cycle also goes through four strokes: air intake, compression, work and exhaust.
The diesel engine sucks pure air in the intake stroke. When the compression stroke is nearing the end, the diesel fuel is increased to more than 10MPa by the fuel injection pump, and is injected into the cylinder through the fuel injector, and mixed with the compressed high-temperature air in a very short time to form a combustible mixture. Due to the high compression ratio of the diesel engine (generally 16-22), the air pressure in the cylinder can reach 3.5-4.5MPa at the end of compression, and the temperature is as high as 750-1000K (while the mixture pressure of the gasoline engine at this time will be 0.6-1.2MPa, and the temperature will reach 600-700K), which greatly exceeds the autoignition temperature of diesel. Therefore, after the diesel fuel is injected into the cylinder, it mixes with the air in a very short time and immediately ignites and burns on its own. The air pressure in the cylinder rises sharply to 6-9MPa, and the temperature also rises to 2000-2500K. Driven by high-pressure gas, the piston moves downward and drives the crankshaft to rotate to do work, and the exhaust gas is also discharged into the atmosphere through the exhaust pipe.
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