The greatest characteristic of electric temperature regulator just ordinary 220 v power supply and use energy modulated medium itself, directly to the media such as steam, hot water, hot oil and gas temperature automatic adjustment and control, can also be used to prevent overheating or heat exchange, the electric temperature control valve has simple structure, convenient operation, selection of wide temperature range, fast response time, sealed performance is reliable, and can be adjusted randomly in the operation, thus the electric temperature regulator is widely used in chemical, petroleum, food, textile, such as hotels and restaurants sector hot water supply. Install the item: ( 1) Before installation, check whether the machine parts defect and loose, the pipeline should be clean, medium flow direction should be in line with arrow on valve body pointing in the direction. ( 2) As far as possible to install in the trembling and hit a small place, valve when the weight is bigger, fixing racks. Is easy to operate, installation area should be considered and for maintenance. ( 3) In order to make automatic control system failure or repair valve can still run continuously, bypass manual valve should be set up. Maintenance and use the manual valve, Industrial Valves shutoff valves before and after the first. ( 4) Wen I completely submerged in a modulated medium, and installed in a horizontal or inclined upward. ( 5) Capillary tube bending radius should not be less than 75 mm, placed in the natural state, it is forbidden to fold or distorted. ( 6) To facilitate the field monitoring and temperature setting, the valve should be set before the pressure gauge and thermometer in a package insert position setting, site operating system installation. Working principle of electric temperature control valve consists of control valve, electric actuator, temperature sensor and temperature controller and other components, according to user needs, there were two structure type heating and cooling. The structure and principle of heating control valve, the main Industrial Valves core in a partially open position before starting work, sensors in a natural state. Turn on the juice and the main Industrial Valves core is fully open. Medium by the direction of the arrow into the main body, the valve core to heating heat storage box. When the temperature rises to the appropriate setting, sensors that produce corresponding linear actuator signal input integration, and then drive the valve stem, valve core displacement, close the main valve core stop heating. When the temperature is lower than the set value, the sensor produces linear actuators, signal input integration gradually open the valve core, make the medium according to the parabola features into the box for storing heat, heated until the set value. This is accused of medium was controlled within the range set temperature, so as to achieve temperature control purposes. Note: heating type, cooling type used to say. As long as the change in the valve valve core structure can be achieved. Regulator is the common problem is closed tightly, can't open, return difference big, leakage, vibration, vibration, etc. , its processing method is respectively: ( 1) core closed tightly: the gas valve closed solution is to increase the air pressure or the loose spring pre-tightening force ( Outdoor starting point which reduce gas pressure) 。 The solution is to increase of gas valve open spring pre-tightening force, at the same time increase the origin of pressure. ( 2) To help slow or no action: inspection, rolling diaphragm of diaphragm, gasket is aging, rupture caused by leakage. ( 3) Back to the big difference: whether the push rod bending and packing gland is too tight, especially graphite packing, valve core orientation is injured. The solution is to change the valve stem, increase in packing, guide clearance, in strong actuators. ( 4) Full valve stroke is not enough: loosen stem coupling nut and screw stem outward or inward. Make all travel deviation exceeds allowable values and then nuts and tight. ( 5) small open degree of stability: the scene first checks whether the wrong flow, or valve to choose too large, the solution is to decrease away installation, the valve core size. ( 6) movement is not stable, fault, output pipeline leak locator and actuator stiffness is too small thrust caused by insufficient fluid pressure change. The solution is to service locator and line, convert stiffness of actuators. ( 7) Leakage: first check whether the seal face is injured, valve seat and valve stem connecting thread is loose, closed the valve pressure difference is greater than the output force of the actuator. Solution is to replace the sealing surface, and tight seating, replace the high output force of actuators. ( 8) Work in a small open of the oscillation phenomenon: due to valve or flow to flow caused by a closed form. Solution is to work to avoid small open degree, change of flow type work.
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