What is the air pressure in the general production equipment?

Regarding the setting of air pressure in general production equipment, according to the general specifications in the industrial field and the requirements of equipment operation, the following professional instructions are made on the setting principles and management points of air pressure parameters:

1. barometric parameter setting reference
the air pressure setting of production equipment shall follow the equipment technical specifications and process safety requirements. The common air pressure ranges are as follows:

1. basic power equipment for example, the output pressure of the air compressor system is usually set at 0.6-0.8MPa. This range can meet the gas needs of most pneumatic tools and production lines, while balancing energy efficiency and equipment life.

2. Precision manufacturing equipment in high-precision processing fields such as electronics and medicine, higher air pressure stability is required. It is recommended to set the pressure fluctuation range not to exceed ± 0.02MPa to ensure processing consistency.

3. Special Process Equipment: Such as spraying, blow molding and other processes, according to the material characteristics and process requirements to adjust the air pressure. For example, the spray operation air pressure is usually set at 0.3-0.5MPa to control the paint atomization effect.

Influencing factors of 2. air pressure setting

1. device Type: The demand for air pressure varies significantly from device to device. For example, a pneumatic wrench requires a pressure of 0.6MPa or more to ensure torque output, while a pneumatic conveying system requires a graded pressure set according to material characteristics.

2. Process Requirements in food packaging, textile treatment and other processes, air pressure setting needs to take into account product quality and energy consumption. For example, the vacuum packaging machine needs a negative pressure below-0.08MPa, while the textile carding machine needs a positive pressure of 0.4-0.6MPa to control the fiber tension.

3. Safety specification pressure vessels, pipelines and other pressure-bearing parts shall comply with the requirements of Safety Technical Supervision Regulations for Pressure Vessels. It is recommended to set up a two-stage safety valve. The first stage is set to 1.05 times the working pressure, and the second stage is set to 1.1 times to ensure system overpressure protection.

3. Typical Device Barometric Setting Example

4. pressure management specification

1. daily monitoring: It is recommended to record the pressure of the main air supply pipeline every 4 hours and use a calibrated pressure gauge for detection. For critical equipment, pressure transmitters shall be installed for remote monitoring.

2. Pressure regulation when adjusting the system pressure, the principle of "graded pressure regulation" should be followed. Adjust the loading pressure of the air compressor first, then adjust the outlet pressure of the gas tank, and finally calibrate the pressure of the terminal gas point.

3. Emergency Disposal: Formulate the Emergency Plan for Abnormal Pressure. When the system pressure exceeds 10% of the set value, the following procedures should be started immediately:

   • cut off non-essential gas equipment
   • open bypass relief valve
   • check whether the safety valve is tripping
   • troubleshoot pressure sensor and controller

5. energy saving optimization suggestions

1. pressure matching: Determine the optimal working pressure by analyzing the energy consumption of gas-using equipment. The measured data show that the energy consumption of air compressor can be reduced by about 7% for every 0.1MPa working pressure reduction.

2. Leak Management: Ultrasonic leak detector shall be used to regularly detect the pipe network and timely repair the leakage points of pipes with specifications above DN15. Typical cases show that for every 1% reduction in leakage rate, the annual electricity saving can reach 10,000 yuan.

3. intelligent control: Deploy a pressure-flow double closed-loop control system to automatically adjust the operating parameters of the air compressor according to real-time gas demand, which can achieve a 15%-20% increase in comprehensive energy efficiency.

Enterprises should establish a three-dimensional evaluation system including equipment parameters, process requirements, and safety specifications, and formulate the "Air Pressure System Management Regulations" and incorporate it into the equipment management system. It is recommended to conduct a system pressure audit every three years, and continuously optimize the air pressure setting value in combination with equipment renewal and process improvement, so as to maximize energy efficiency under the premise of ensuring production safety.