SU496417A1 - Two-way solenoid valve actuator - Google Patents

Description

one

The invention can be used in the valve industry.

Two-way electromagnetic and valve actuators are known, which contain a permanent magnet and a device for reducing the holding force g at the time of actuation.

However, the known drives require auxiliary windings. It will increase; The size of the drive, its weight and complexity of the design. : Yu

The purpose of the invention is to reduce the size, weight and simplify the design.

For this, a device for reducing the holding force at the time of actuation is you. Completed in the form of resistance, a succession of the 5 connected to one of the control windings, and in parallel with the other. |

FIG. 1 shows a drive, a baseline section, and a control circuit with the same j-windings; in fig. 2 is a circuit 20 (drive control with different control windings.

1 The drive includes a magnetic core 1 with one hundred: Pom 2, measles 3, mortgage stop 4, a permanent magnet 5 located between two 25

control windings 6 and 7, resistances 8 and contacts 9 and 10.

The drive works as follows. With windings secured, measles 3 is held at one of the stops (for example, at stop 4), due to the magnetic flux of the permanent magnet.

To move the core 3 to the foot 2, an impulse of a constant current is applied to the control winding 6 by momentarily closing the contact 10. At the same time, the pulse is fed through resistance 8 to the other control winding 7.) The magnetic flux excited by the control winding 6 causes tractive force the direction of the stop 2, and the flow created by the winding 7 connected through the Resistance 8 is directed oppositely to the flow of the permanent magnet 5 and thereby reduces the holding force of the core 3 at the stop 4 at the time of actuation. ,

When the core 3 of stop 2 is reached, the flow of magnet 5 is transferred and, with the windings provided, the measles are held; foot 2.

i To move the core to the foot 4 briefly; 1, contact 9 is temporarily closed. At the same time, Gimpulstock is fed to the control frame 7 and simultaneously to the winding 6 through-j

cut resistance c. , five

; Resistance 8 is chosen according to velhirae such that the reduced current, the passage through the winding, creates such an asggeater, I I magnetic flux, which only reduces; I would hold the force at the moment JQ neither triggers nor demagnetizes the magnet 5. In the case where the drive windings differ in terms of: turns, connect two different;

the magnitude of the resistance (see fig. 2), so that the windings created by windings 6 and 7 meet the magnetic fluxes equal. .

In the case where the drive windings differ in the number of turns, they connect; two different sizes of resistance 8 and

 (see FIG. 2) so that counter-magnetic fluxes generated by oGMOTv: kami 6 and 7: bg1i.

  .

 Formula of invention

:,;

; A two-position solenoid actuator of the valve, the measles of which is held at the stops by the field of the permanent magnet installed in a common magnetic circuit with: two control windings and a device for reducing the holding force at the moment of actuation, is different in order to reduce / dimensions, weight and simplified design; the device is designed as a resistance connected in series with one of the control windings and in parallel with the other.

3 g /

0 + 0Fig. 2