Thermal expansion valve works

Thermodynamic expansion valve works: Thermodynamic expansion valve is an important component of the refrigeration unit, refrigeration system is one of the four basic equipment. It achieves a pressure drop from condensing pressure to evaporating pressure, while controlling the flow of refrigerant; its volume is small, but its effect is huge, its work is good or bad, which directly determines the operating performance of the whole system. However, in actual work, the operation of the thermal expansion valve is often neglected, making the thermal expansion valve a dead corner in equipment maintenance. The regular inspection and adjustment of thermal expansion valve, the operating life of refrigeration equipment, energy conservation, reduce operating costs, but it is of great significance. Thermodynamic Expansion Valve How it works: Thermodynamic expansion valve controls the refrigerant flow into the evaporator by sensing the superheat of the gaseous refrigerant at the outlet of the evaporator. In accordance with the different balance, thermal expansion valve is divided into external balance and internal balance. In the industrial cooling equipment, the general use of external balanced thermal expansion valve. Thermal expansion valve by the sensing mechanism, the implementing agencies, adjusting institutions and the valve body. The induction mechanism is charged with Freon, the temperature sensing package is arranged at the outlet of the evaporator, and the temperature difference between the outlet temperature and the evaporation temperature is usually called superheat. After feeling the temperature of the evaporator export outlet temperature, the entire sensing system at the corresponding saturation pressure Pb. This pressure will be transmitted to the plunger through the diaphragm to the spool. In the upper part of the pressure chamber, there is only Pb in the diaphragm. The spring force Pt and the evaporating pressure P0 under the diaphragm are adjusted, and Pb = Pt + Po at equilibrium. When the evaporator heat load increases, the outlet superheat is high, Pb increases, Pb> Pt + Po, the force so that the mandrel, the spool down, open the thermal expansion valve increases, the refrigerant flow increases proportionally. Conversely, the opening of the thermal expansion valve becomes smaller and the refrigerant flow rate decreases proportionately. Therefore, the refrigeration equipment is controlled by the thermal expansion valve superheat refrigeration system self-adjustment. This article Keywords: expansion valve

Threaded Flange

The Threaded Flange also is called Screw flange,The inner hole of the threaded flange is machined to the pipe thread,which connects to the pipe with the screw,it is not welding flange.

Production Size:DN10-DN100mm

Pressure range:PN2.5,PN10,PN16,PN25,PN40,PN64,PN100,PN250,PN320,PN400

Production Standard:BS,JIS,GOST,ANSI,DIN,GB

Main Material of parts:

A105,20#,Q235,16Mn,A350 LF1,LF2,CL1/CL2,LF3 CL1/CL2,A694 F42,F46,F48,F50,F52,F56,F60,F65,F70;A182 F304,304L,F316,F316L,321,18-8,A182F1,F5a,F9,F11,F12,F22,F91,A182 F12,F11,16MnR

The threaded flange is easy to install and fix,but The threaded flange is only used in from -45 degree to 20 degree  and the outside diameter of the pipe is below 100 mm.

 

Threaded Flange

Forged Threaded Flange,Steel Threaded Flange,A105 Threaded Flange,NPT Threaded Flange

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