I. Scope of Application
This Technical Specification is applicable to the engineering design of various reciprocating compressors and the complement code.
II. Terminology
2.1 Compressor
A compressor is a device that compresses a gas by reducing its volume, and increases its pressure. Compressors usually handle gases such as air, hydrogen, natural gas, carbon dioxide and so on.
2.2 Reciprocating Compressor
A reciprocating compressor is a type of compressor that uses a crankshaft and piston to compress the gas.
2.3 Pressure Ratio
The ratio of the outlet pressure to the inlet pressure of a compressor is called the pressure ratio.
III.Technical Requirements
3.1 Design of Structure
3.1.1 The structure of the compressor should meet the requirements of strength, rigidity, stability and vibration isolation;
3.1.2 The connection between components should meet the requirements of tightness and strength;
3.1.3 The assembly and structure of components should be reliable, easy to operate and maintain.
3.2 Design of Key Parts
3.2.1 Cylinder: The material of the cylinder should be 16Mn, and the wall thickness and installation angle should meet the requirements.
3.2.2 Crankshaft: The crankshaft should be made of high strength steel, and the heat treatment process should meet the requirements of strength and fatigue strength.
3.2.3 Piston: The material of the piston should meet the requirements of compressive strength, abrasion resistance and lubrication.
3.3 Design of Connecting Parts
3.3.1 The connecting rods should be made of 16Mn steel and must meet the requirements of strength and stiffness;
3.3.2 The connecting rods should be designed with a constant profile and spring type connecting rods;
3.3.3 The design of the connecting rod should be suitable for the whole machine assembly.
3.4 Design of the Oil System
3.4.1 The oil system should be reliable and easy to operate and maintain;
3.4.2 The oil return pipe should be designed according to the size of the oil tank volume and the pressure of the oil;
3.4.3 The volume of the oil tank should meet the requirements of the operating cycle and the volume of the oil in the system.
3.5 Design of Balance System
3.5.1 The balance system should be properly designed to reduce vibration and noise;
3.5.2 The balance thrust bearing should be designed to withstand the working thrust force;
3.5.3 The balance system should be suitable for the working speed and pressure of the air compressor.
3.6 Design of Inlet and Outlet
3.6.1 The inlet and outlet should be designed according to the requirements of size, flow and pressure of the gas;
3.6.2 The flow area of the gas should be designed according to the process requirement;
3.6.3 The flow control device should be designed according to the requirements of flow capacity.
3.7 Design of Auxiliary System
3.7.1 The design of cooling system should meet the requirements of cooling and connecting;
3.7.2 The design of lubrication system should meet the requirements of lubrication and maintenance;
3.7.3 The design of air pressure system should meet the requirements of safety and environmental protection.
IV. Quality Control
4.1 Accuracy Control
4.1.1 The accuracy of the main parts should meet the requirements of metrology;
4.1.2 The clearance of the main parts should meet the requirements of dynamic balance;
4.1.3 The pressure of the main parts should meet the requirements of performance.
4.2 Process Control
4.2.1 The materials used should meet the design requirements;
4.2.2 The shape and size of the parts should meet the requirements of installation;
4.2.3 The surface treatment of the parts should meet the requirements of corrosion resistance.
4.3 Assembly Control
4.3.1 The parts should be assembled strictly according to the requirements;
4.3.2 The components should be installed reliably and operation balance should be ensured;
4.3.3 The assembly should be tested for air leakage and other tests before it is accepted.
4.4 Quality Inspection
4.4.1 Each component should be inspected for mechanical performance and performance before assembly;
4.4.2 Relevant dynamic tests and materials tests should be conducted before the compressor is accepted;
4.4.3 The assembled machine should be subject to vibration test, noise test and other tests before it is accepted.
V. Conclusion
In summary, this Technical Specification applies to the design of all types of reciprocating compressors, including the design of structure, key parts, connecting parts, oil system, balance system, inlet and outlet and auxiliary system. Quality control including accuracy, process, assembly and quality inspection should be strictly implemented according to the requirements of the specifications.
