Siemens PLC 6FC5100-0AA01-0AA1

09/10/2020

The status quo and development trend of China's gate valve market

Gate valves have the longest history of use, and are still used in various countries around the world, especially below DN300mm, which still dominate in various types of valves. The characteristic is that the pressure difference between the front and rear of the valve plate forces the valve plate to press on the valve seat on the right side of the outlet, with good sealing performance, and when the valve plate is fully opened, the pressure loss is small because the valve plate does not remain in the flow path. Used to cut off the medium in the pipeline.

09/15/2020

Comparison of scroll compressor and rolling rotor compressor

With the development of society, human beings have higher and higher requirements for the comfort of the living environment. Therefore, improving the compression efficiency and working reliability of the compressor, developing and applying material-saving and energy-saving compressors have become one of the main directions for the development of refrigeration technology.

08/02/2020

Type selection calculation of pressure difference bypass regulating valve for chilled water system

In order to ensure that the flow of the chiller in the central air conditioning chilled water system is basically constant; the operating conditions of the chilled water pump are stable, the generally adopted method is:

07/23/2020

Trouble and overhaul of piston refrigeration compressor

1. The refrigeration compressor cannot start normally Maintenance ideas 　　 1. First, check whether it is caused by low power supply voltage or poor connection of the motor circuit. If it is indeed that the grid voltage is too low, restart after the grid voltage returns to normal: If the line is in poor contact, the connection between the line and the motor should be detected and repaired.

06/14/2020

Why is the refrigeration compressor damaged, how to prevent it from the source

Why is the refrigeration compressor damaged, how to prevent it from the source Are you clear The scroll compressor is a volumetric compression compressor, and the compression component is composed of a movable scroll and a static scroll. Its working prin器2䀀
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06/29/2020

How the compressor works

09/09/2020

The development prospect of air filter

The prototype of the air filter is a respiratory protection device used by people to protect the breath. According to records, as early as the first century in Rome, people used hemp masks for protection when they purified mercury.

07/07/2022

Proportional Valve Types for Different Applications

When it comes to Proportional Valves, they are well-suited to a number of different applications in machinery, basic processes and hydro-pneumatic systems.

07/30/2020

Case analysis of maintenance of central air-conditioning compressor

We all know that the compressor is the heart of the refrigeration system, and it can be said to be the lifeblood of the refrigeration system. The compressor often has various problems during long-term use.

08/19/2020

The difference between ammonia refrigeration system and fluorine refrigeration system

In the early stages of the development of the refrigeration and refrigeration industry, ammonia refrigeration systems have been widely used. With the development of the times, the shortcomings of ammonia systems have gradually been exposed,