SU916855A1 - Pulse-type electric valve - Google Patents

Description

(S) PULSE ELECTRO-VALVE

one

The invention relates to a valve industry, namely to pulsed solenoid valves for remote control of the flow of the medium.

Electromagnetic valves are known, consisting of a magnetic conductor c. excitation coil and closure organ tl.

The disadvantage of such valves is not high enough performance due to the large mass of the core - valve. In addition, the direction of the electromagnetic force does not depend on the direction of the current in the winding, which determines the necessity of setting the return springs, which also reduces the speed of the valve.

Also known is an electromagnetic valve, in the casing of which two magnetic cores are installed symmetrically with the transverse axis of the solenoidal windings of impulse switching, which interact with the lamellar locking organ, and the solenoid coil is placed in the gap between the magnetic cores 2.

The disadvantage of this valve is the limited speed, since the electrodynamic forces of the moving coils of pulse switching always act against one winding of the constant switching. The efficiency of such a valve is also low because of the fact that the windings of both magnetic cores are constantly under voltage.

The purpose of the invention is to increase

ts speed pulse electromagnetic valve.

The goal is achieved by the fact that the solenoidal windings of the pulse connection are rigidly connected to the magnetic core, and stops made of nonmagnetic material are placed in the gap, limiting the core stroke when the valve is opened. 3 In FIG. 1 shows a sectional valve, the open position; FIG. Magnetic cores 2 and 3 with windings A and 5 are installed in the housing 1. The lamellar measles - the locking member 6 is equipped with a sleeve 7, with which it is movably connected to the magnetic conductor 3. On the sleeve 7, a solenoid coil 8 is fitted, which is fitted to the magnetic core 3. The stops 9 are strengthened, limiting the stroke of the core 6 when the valve is opened. The height of the stops h and the size of the gap pa D are related by a ratio of 1.2-6.0 so that the magnetic resistance of the gap is less than the resistance pi between the lower magnetic core and the core in contact with the stops. The valve operates as follows. With de-energized windings 5 and coil 8 measles, the locking member is held in the closed position by means of an electromagnetic amplifier-upper electromagnet 2, the winding 4 of which is energized. At time t, the voltage from winding 4 is removed and voltage pulses are applied. on the coil 8 and around the hank 5 different signs. Under the action of electromagnetic force on measles from the side of the magnetic circuit 3 and electrodynamic force between the magnetic core 3 and the catuka 8 measles - the locking organ moves inward and opens the passage of fluid. At times t and tj, the pulses from the winding 5 and the coil 8, respectively, are removed. At time interval f, the valve opens, at time interval the valve is open. At time t, pulses of the same sign are applied to the windings 4.5 and the coil 8. Under the action of electromagnetic and electrodynamic forces, measles - the locking organ moves up and blocks the passage of fluid. The valve closes at time interval fj. The presence of non-magnetic stops on the magnetic core, in the gap of which a coil is placed, mounted on the bark of the closure member, allows the maximum force to be developed when the valve is closed, and the absence of an opposing electromagnetic force when opening increases the valve opening speed, which, together with a decrease in the mass of moving parts, increases the valve speed, The efficiency of the valve increases due to the fact that the upper winding is turned on only when the valve is closed, and the lower one is turned on only at the moments of opening and close the valve. Shape of the invention. Pulse solenoid valve, in the casing of which two magnetic cores with solenoid windings of pulse switching, interacting with a lamellar bar, a locking member, and a solenoid coil placed in the gap between the magnetic cores, characterized by the fact that in order to increase speed, solenoid windings of pulse switching are rigidly connected to the magnetic core, and stops made of non-magnetic material are placed in the gap, limiting the core movement when the valve is opened. Sources of information taken into account during the examination 1. USSR author's certificate No. 569782, cl. F 16 K 31/02, 1977. 2. USSR author's certificate No. 369330, cl. F 16 K 31/02, 1973.

ABOUT

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Claims (1)

Claim Pulsed electrovalve, in the case of which two magnetic cores with solenoid windings of pulse activation, interacting with lamellar armature - shut-off organ, are installed symmetrically to the transverse axis; rigidly connected to the magnetic circuit, and in the gap placed stops of non-magnetic material. limiting the course of the armature when the valve is opened.