R23 ultralow-temperature refrigerant liquid adding machine

Abstract

The invention discloses an R23 ultralow-temperature refrigerant liquid adding machine. A first high-pressure ball valve, a first filter, a second CM4P pump, a second high-pressure ball valve, a firstCM4P pump, a third high-pressure ball valve and a gas storage tank are sequentially connected through pipelines, wherein the gas storage tank, a sixth high-pressure ball valve, a third CM4P pump, a seventh high-pressure ball valve, a second filter, a second mass flow meter, a confluence aluminum block and a filling gun are sequentially connected through pipelines; the filling gun, a circulation aluminum block, a fourth high-pressure ball valve and the gas storage tank are sequentially connected through pipelines; and the first high-pressure ball valve, the first filter, a CM3 pump, a first balance cylinder, a second balance cylinder, a hand valve, a small filter, a first mass flow meter, the confluence aluminum block and the filling gun are sequentially connected through pipelines. According to the automatic refrigerant liquid filling machine with the numerical control technology as a platform, a precise flow sensor is adopted as a metering manner, and the purpose of precise refrigerant filling is achieved; and after liquid adding is finished, the redundant refrigerant recycling technology is adopted, multiple safety technologies are adopted for guaranteeing production safety usage, and the supercritical circulation heating technology replaces the traditional heating technology.

Description

technical field [0001] The invention relates to the technical field of refrigerant filling, in particular to an R23 ultra-low temperature refrigerant filling machine. Background technique [0002] As the temperature and pressure of the environment change, any substance has three phases - gas, liquid, and solid. The point where the three phases coexist in an equilibrium state is called the triple point. The state point where the liquid and gas two-phase interface disappears is called the supercritical point. The temperature and pressure at the critical point are called critical temperature and critical pressure. Different substances have different critical point pressures and temperatures. Supercritical fluid (Super Critical fluid, referred to as SCF) refers to the fluid whose temperature and pressure are higher than its critical point. The commonly used supercritical fluids are carbon dioxide, ammonia, ethylene, propane, propylene, water and so on. When an object is in a su...

AI Technical Summary

Problems solved by technology

But the biggest disadvantage of R23 is that it is flammable, explosive and highly toxic, which puts forward higher requirements for our liquid filling machine

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