Valve is dynamoelectric device is implementation valve programmed control, accuse oneself and the equipment with indispensable remote control, its campaign process can be controlled by the size of the journey, torsion or axial thrust. Because valve is dynamoelectric,the working character of device and utilization rate depend on the place that standard of work of the sort of valve, unit reachs valve to go up in cop or equipment, accordingly, right choice valve is dynamoelectric device, to avoiding appearance of occurrence excess load (working torsion prep above controls torsion) crucial. Normally, right choice valve is dynamoelectric the basis of device is as follows:
Operating pitching moment to operate moment of force is choice valve the mainest parameter of electric unit, the 1.2 ～ that electric unit outputs pitching moment to should operate the largest moment of force for valve 1.5 times.
The lead plane structure of electric unit has operation thrust valve two kinds: One kind is not to configure thrust dish, output pitching moment directly; Another kind is configuration thrust dish, output moment of force passes thrust dish changeover of medium nut of lever of a powerful person is output thrust.
Take-off turns the circle counts valve the how much with valve nominal that electric unit take-off turns the circle is counted connects head of pitch of lever of diameter, a powerful person, whorl to count about, should press ZS of ／ of M ＝ H to calculate (the number of total rotational pen that M should satisfy for electric unit, h is valve open height, s is pitch of whorl of drive of lever of a powerful person, z counts) for head of whorl of lever of a powerful person.
Shank diameter of a powerful person is right much circumgyrate kind bright lever valve, if electric unit permits the biggest a powerful person or family that pass,shank diameter cannot match the lever of a powerful person of valve through place, cannot assemble dynamoelectric valve. Accordingly, the internal diameter of hollow take-off must be more than electric unit the external diameter of lever of a powerful person of bright lever valve. The dark lever valve in answering rotary valve door and much circumgyrate valve to the part, although need not consider a bother about of shank diameter of a powerful person to inscribe, but the dimension that choosing the Yi Yingchong when matching to divide shank diameter of consideration a powerful person and key seat, make after assembling, can work normally.
Output rotate speed valve open shut if speed is too fast, easy generation water attacks a phenomenon. Accordingly, should according to different use condition, the choice is opened appropriately close career.
Electric unit has valve its are special requirement, namely must can demarcate torsion or axial force. Valve is normally dynamoelectric device uses those who restrict torsion to connect an axis implement. After deciding when electric unit norms, its controlled torsion to also decide. Move inside the time of predefine commonly, electric machinery won't excess load. But if appear,following case may cause excess load: It is depress of power source report, cannot get needs torsion, make electric machinery stops roll; 2 be erroneously setting torsion restricts an orgnaization, make its are more than inactive torsion, cause successive generation to cross big torsion, make electric machinery stops roll; 3 it is intermittent use, the quantity of heat of generation is accumulated, the permission that exceeded electric machinery is lukewarm appreciate; 4 because torsion of some kind of reason restricts orgnaization circuit to malfunction,be, make torsion too big; 5 it is use environment temperature exorbitant, make electric machinery thermal capacity drops relatively.
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