1. Pre-Installation Testing Before installation, safety valves must undergo pressure resistance testing and leak-tightness testing to verify structural integrity and sealing performance. Only after passing these tests can calibration and adjustment proceed. 2. Setting the Opening Pressure On a gas test bench, adjust the load applied to the valve disc to calibrate the opening pressure: Lever-type s...

Coal enterprises are major consumers of electricity, with power consumption accounting for a significant portion of production costs. Studies indicate that equipment such as fans, water pumps, compressors, hoists, and gas drainage systems consume over 40% of the total electricity used in coal mining operations. The development of variable frequency drive (VFD) technology effectively addresses issu...

1. Pre-Start Preparation (1) Open the cooling water inlet valve and check whether the water supply to each stage of the cooler and cylinder is normal. (2) Verify that the oil level in the crankcase is within the specified range. (3) Ensure the inlet regulating valve is closed, the compressor outlet vent valve is open, and the air delivery valve is closed. (4) Confirm that electrical equipment is i...

The original motor used NU-type deep-groove cylindrical roller bearings, which allow axial movement of the motor. The inner ring of the bearing has retaining ribs on both sides, while the outer ring has none, permitting bidirectional displacement of the shaft relative to the bearing and accommodating elongation caused by thermal expansion. Additionally, the bearing clearance is relatively larger c...

Screw-type air compressors are designed with high-temperature protection functions. When the exhaust temperature exceeds 100°C, the temperature sensor activates the temperature switch, triggering an alarm and automatic shutdown, while the instrument panel displays an exhaust temperature reading above 100°C. The machine's built-in cooling mechanism involves injecting lubricating oil from the lower ...

The air conditioner compressor serves as the core component of an AC system, functioning by compressing and circulating refrigerant to transform low-temperature, low-pressure refrigerant into high-temperature, high-pressure refrigerant, thereby enabling the system's cooling or heating operation. The compressor consists of the following key components: 1. Compressor Housing The outer shell, typical...

With the continuous advancement of modern technology, air conditioning has become an indispensable part of daily life. One of the core components of an air conditioner is the compressor, which comes in various models, each with unique features and applications. This article introduces some common types of air conditioner compressors to help readers make informed choices. 1. Fixed-Speed Compressor ...

Screw air compressors are widely used industrial equipment in various industries. Proper installation is crucial for their normal operation and service life. This article introduces the installation methods and key precautions for screw air compressors. I. Installation Methods 1. Location Selection The screw air compressor should be installed in a well-ventilated, dry, dust-free, and vibration-fre...