Does the piston work on the hydrogen compressor?

There are two typesHydrogen compressors, one of them is a piston type hydrogen compressor. This type of hydrogen compressor completes the task of compressing hydrogen in the form of circular motion.

main：

• Type and choice of hydrogen compressor

• Piston movement of hydrogen compressor

• Basic structure of piston hydrogen compressor

Type and choice of hydrogen compressor

According to the principle, hydrogen compressors can be divided into two types: volume type and speed type. The volume type is the most common type. Positive displacement compressors are divided into two types: reciprocating piston type and rotary type.

1. The reciprocating piston type changes the gas workload by alternately using the piston of the cylinder. Piston compressors have a long history and mature production technology.

2. Rotary compressor includes rotary vane compressor (slider) and screw compressor. Most air conditioners made in China use today's rotary compressors. Screw compressors are mainly used in large refrigeration equipment and some large refrigeration equipment. There are many screw compressors in shopping malls and office buildings.

Like other gases, hydrogen can be pressurized in a reciprocating or radial compressor to meet technical requirements. For ordinary applications, the type of compression should be determined based on the increase in hydrogen flow and pressure.

Piston movement of hydrogen compressor

The piston motion of the hydrogen compressor turns the compressor into a compressor, which uses the reciprocating motion of the piston to generate pressure and feed gas. Positive displacement compressors are also called \"reciprocating piston compressors\" or \"reciprocating compressors\". After starting the engine, the crankshaft will rotate. Due to the transmission of the connecting rod, the piston moves back and forth, which regularly changes the amount of work generated by the inner wall of the cylinder, the cylinder head and the top of the piston. As the piston moves out of the cylinder head, the displacement of the cylinder gradually increases. At this time, the steam pool enters the cylinder until it pushes the suction valve along the suction pipe, and the displacement reaches the maximum, the suction valve is closed. When the piston moves in the opposite direction, the displacement of the cylinder decreases and the air pressure increases. When the cylinder pressure reaches and slightly exceeds the outlet pressure, the exhaust valve opens and the gas remains in the cylinder until the piston moves to its final position. The valve is closed. When the piston moves in the opposite direction, repeat the above process. In other words, the crankshaft rotates once and the piston reciprocates, and the intake, compression, and exhaust processes from the cylinder are sequentially performed. That is, the service cycle is completed.

Basic structure of piston hydrogen compressor

• Piston-type hydrogen compressor is mainly composed of crankcase, crankshaft, connecting rod, piston group, valve, shaft seal and oil pump. Energy control device, oil circulation system, etc.

  
  

• Shell: Including cylinder block and shell, usually ductile iron. It is the main body that bears the weight of the cylinder liner, crankshaft and all other components and ensures the correct relative position of these components. The cylinder has a cylinder liner design and is installed in the bore of the cylinder block and cylinder liner for maintenance or replacement when the cylinder liner is worn. Therefore, the structure is simple and easy to maintain.

  
  

• Crankshaft: The crankshaft is one of the main components that replace the cooling compressor and can provide all the power of the compressor. The main function is to convert the rotary motion of the engine into the reciprocating linear motion of the piston through the connecting rod. As the crankshaft moves, tension, compression, shear, bending and torsion loads are applied alternately. The operating conditions are difficult, requiring sufficient strength and rigidity as well as the wear resistance of the spindle and connecting rod.

  
  

• Connecting rod: The connecting rod is part of the connecting rod between the crankshaft and the piston. The connecting rod converts the rotational movement of the crankshaft into the reciprocating movement of the piston, and transmits force to the piston to act on the steam pool. The connecting rod includes a connecting rod housing, a small end connecting rod bushing, a big end connecting rod bearing bushing and a connecting rod screw.

  
  

• Piston kit: Piston kit is a general term for piston, piston pin and piston ring. The piston group is driven by the connecting rod to perform reciprocating linear movement together with the cylinder in the cylinder, thereby forming a variable amount of work to perform the process of absorption, compression and contraction.

  
  

• Steam valve: The steam valve is an important part of the compressor and also one of the vulnerable parts. Its quality and work quality directly affect steam flow, power loss and compressor performance. The steam valve includes an intake valve and an exhaust valve. The piston moves up and down once, and the intake valve and exhaust valve open and close immediately, so we control the compressor and perform 4 intake, compression and contraction operations.

  
  

• Shaft seal: The function of the shaft seal can prevent refrigerant vapor from leaking along the extended end of the crankshaft, or allow outside air to flow in when the crankcase pressure is lower than the pressure. Therefore, when waiting, the shaft seal should have good sealing and safety, simple design, real disassembly and assembly, and a specific service life.

  
  

• Energy management device: When the cooling heat load in the refrigeration system is changed, the cooling capacity will also change accordingly, so the cooling capacity of the compressor must be adjusted according to the requirements. The cooling capacity of the compressor is adjusted using an energy controller, and the compressor energy controller is actually a polarization controller. It has the ability to start the compressor under no load or low load and adjust the cooling capacity of the compressor.

As with oxygen and nitrogen compressors, choosing the type of compressor that suits you can improve work efficiency. However, hydrogen piston compressors may not be suitable for your business. More information can be found on the homepage.