Gas pressure reducer

Single-stage pressure reducing structure

The mother body is made of high-quality brass

The upper cover is made of high-strength aluminum alloy

2 'pressure gauge

2 "diaphragm

Three years of free maintenance

Dimensions: 170mm × 130mm × 100mm

Weight: 1.10kg

Model and specifications of gas pressure reducer

Structural composition:

(1) Shell: welded from steel plates or processed from castings; The inner wall of the shell is lined with corrosion-resistant or wear-resistant materials; Internal components are made of stainless steel or chrome plated to extend their service life; Apply anti-corrosion coating on the surface to prevent corrosion and rusting.

(2) Packing box: The packing is a disc-shaped metal sheet made of easily melted steel, installed on the inner wall of the flow channel in the middle of the shell Its function is to cool and reduce the pressure of high-temperature and high-pressure gases, separate a portion of relatively pure gases, and prevent solid particles from entering the cylinder cavity and contaminating the lubricating oil film surface.

(3) Cylinder barrel: Made of carbon steel Having sufficient strength, stiffness, wear resistance, and corrosion resistance Its working temperature can reach over 500 ° C (can withstand high temperatures in special circumstances).

(4) Pistons: Made of high-strength alloy steel that has undergone quenching and tempering heat treatment, followed by grinding and polishing treatment It bears significant impact loads and frictional resistance Therefore, sufficient strength, hardness, high elasticity and fatigue performance indicators are required.

Gas pressure reducerWorking Principle:

(1) When the piston rod drives the valve core to move, the gap between the valve core and the valve seat gradually decreases (pressure decreases); When the piston rod reaches the bottom dead center, the valve closes due to the action of the sealing ring.

(2) As the reciprocating motion of the piston rod and the pressure of the medium increase, the spring force on the valve core increases (pressure increases), thereby pushing the valve open; Otherwise, close the valve.

The body of the pressure reducer is made of brass. The structure of two-stage pressure reduction is basically similar to that of single-stage pressure reduction, both consisting of valve top rod, pressure regulating spring, elastic film device, pressure reducing valve and other components. The first stage pressure reduction system is mainly used to automatically reduce high-pressure gas to medium pressure gas, reducing the pressure to 2MPa, and then sending it to the second stage pressure reduction system. In the secondary pressure reducing system, when the pressure regulating screw is tightened, the pressure reducing valve is opened and closed to varying degrees through the pressure regulating spring, elastic film device, and valve top rod, in order to adjust the pressure reduction degree of the oxygen supplied by the first pressure reducing system or stop the gas supply.