Product overview
The mechanical temperature compensated structure is composed of thermosensitive bimetallic elastic materials as temperature sensitive parts, and the hot satin bimetallic materials are multilayer composites, consisting of at least two materials with different thermal ductility. The difference of ductility makes the thermosensitive bimetallic bending with the change of temperature. The thermosensitive bimetal material will store the bending deformation energy and release it. Through the mechanical structure, the trajectory of the diaphragm of the gas meter can be adjusted. By changing the rotary volume of the diaphragm and compensating the measurement error caused by the temperature, the purpose of modifying the gas meter is achieved.
 
Structure composition
The mechanical temperature compensation diaphragm gas meter with rotary valve is a new type of structure with small volume and simple and compact structure.
It mainly includes rotary valve, mandrel plate, shifting fork, deflection shaft and so on. The special feature is that the mandrel disc is connected with the rotary valve, and the mandrel disc is connected with a heat-sensitive spiral spring sheet and a fork with an inner and outer fork. The deflection shaft is placed on the outer fork of the shifting fork, and the inner fork of the shifting fork is located on the outer end of the heat-sensitive spiral spring sheet, so the temperature rises or decreases, the heat-sensitive spiral spring sheet expands or shrinks, pushes the shifting fork, drives the deflection axial to move outward or inward, increases or decreases the eccentric size with the axis of the rotary valve, thereby change the movement stroke of the inner diaphragm of the gas meter and realize temperature compensation.