Method of reducing electric power consumption of quick-acting distributor and device to this effect

FIELD: engines and pumps.

SUBSTANCE: method and device are intended for control system operated by gaseous working medium. The method consists in the following. With the switched off electromagnetic drive windings, the armature is set at its travel centre, and, during drive operation, electromagnetic forces are induced on the armature each side in turn. Here, air being distributed is forced to blast the electromagnetic drive stator and windings to create equal in size and opposite-sign forces acting on the armature along its travel. The distributor is made up of two concentrically located cylinders jointed by a connector in their central zone. Coils with windings are arranged between cylinders on both sides of the connector with a gap for air to pass through. The smaller diameter cylinder accommodates a cylinder rod making a dual-action armature with blind holes on its every end to accommodate the springs resting against the covers, thus retaining the rods with an equal clearance relative to covers. The cylinders walls have two rows of inclined holes symmetric relative to the connector jointing the cylinders.

EFFECT: lower electric power consumption.

2 cl, 1 dwg

 

The invention relates to the field of automation, in particular for power management systems, operating on gaseous working fluid, and can be used in the development of fast steering actuators aircraft.

A well-known method of reducing electric power consumption by the air valve with an electromagnetic actuator, consisting in reducing the stroke of the armature it of the electromagnet. The evidence of this method is based on the dependency analysis to determine the forces developed electromagnetic device [Awhonn and Agilista. Electromagnets DC. M-L: Gosenergoizdat, 1960, str, formula 4-19]:

where Fe- develop strength, kg;

iw - magnetization, And;

Snsquare pole, cm2;

δ move anchors, see

But in some cases this method does not lead to the desired result. Consider, for example, known air valve with an electromagnetic actuator [ISI. Mechanisms in modern engineering, volume VII, M.: Nauka, 1981, str]. It consists of two nozzles, which are made in the form of a bushing with a Central hole and through the channels to connect with the working cavity of the actuator. For overlapping nozzles between them has a plunger, which is the completion of the retractable anchor of an electromagnet. Upon actuation of the electromagnet, the valve connects the working cavity of the actuator with the atmosphere. The movement of the armature in the other direction is provided after de-energizing the coil (due to recoil). While the working cavity of the actuator is connected to the input line. The required temperature of the winding of the electromagnet is provided with the ventilation of the inner wall of the armature winding of the air flowing through the slots of the plunger. One disadvantage of the air distributor is driven by an electromagnet is that its performance is necessary to ensure the desired dynamics of the steering of the aircraft is achieved by the consumption of the electromagnet large electric power necessary to create an electromagnetic force sufficient to ensure the required performance while compressing return springs. For the considered air valve in the steering gear of aircraft it is necessary to reduce consumption of its electromagnet electric power to the level of disposable aboard the craft. But if for this purpose in the air distributor to reduce the stroke of the plunger, then this method will not lead to a noticeable reduction in electric power consumption, because the La conservation of regulated areas in chokes at a lower plunger goes it is necessary to increase the diameter of the hole in the choke. As a result of increasing air load on the plunger and to overcome it you need to increase the current of the electromagnet.

The second drawback, limiting the applicability of the distributor in the aircraft, is in its essential dimensions, due to the need to have a large cross-section of the magnetic circuit, which would allow to pass without significant losses working magnetic flux, providing the desired electromagnetic force.

These drawbacks are eliminated in the known method, selected as a prototype (Patent RU №2112149), which reduces power consumption and which is implemented by the design of the air valve with an electromagnetic actuator (RU Patent No. 2112149). The method consists in that, when de-energized windings of the electromagnetic actuator anchor, which simultaneously performs the function of element distribution device, equipped with springs installed with its two sides, on the half of the stroke of the armature, and in the process operation of the drive excite the electromagnetic forces, acting in accordance with the relay input signal alternately with each of the working side of the anchor, and fanned distribute air to the stator.

Design of a prototype that implements the method consists of two nozzles, electron is gnite with coils, stators and spring-loaded anchor, combined with the Executive element of the switchgear, and also has channels for supplying air to the nozzles.

The movement of the armature in both directions is carried out in accordance with the relay input signal alternately switching the windings located on both sides of the anchor that provides a high performance distributor with less current consumption. The reduction of current consumption compared to similar due to the fact that the operation of the valve compression spring is not throughout the course of the anchor, and at half-time during the move from the middle position to the stop, which requires a smaller electromagnetic force, and hence the currents, their excitatory. In addition, in the area of movement of the armature position to the middle position of the efforts of springs and electromagnetic forces are summed (in the analog was always subtracted), which also gives the opportunity to reduce electromagnetic force (i.e. current) without prejudice to the performance of the distributor. The blowout of the stator discharged air through the cracks of the distributor, which channels air vent.

The decrease in the electromagnetic force can reduce the size of the working magnetic flux that, in turn, allows to apply a magnetic core with a smaller cross-section, and therefore, the electromagnetic p is the water will have smaller dimensions. In addition, to reduce the size contributes to a more intense heat emitted working windings, by jetting the entire stator distributed air (similar airflow is only the inner wall of the armature winding).

This innovation helped to increase the current density without danger of overheating the windings, which also makes it possible to reduce the dimensions of the electromagnet by reducing the size of the winding, which is confirmed by the following analysis.

As is known, in accordance with the Joule-Lenz law heat of the conductor per unit time, is determined by dependence

Q=i2·R,

where I is the current flowing through the conductor,

a R is its resistance.

The amount of current can be represented as the product of current density j on the cross-sectional area of the conductor S:

and the conductor resistance of the entire coil of an electromagnet:

where ρ - specific resistance of 1 m, coiled wire,

w is the number of turns of the winding,

lcp- the average length of one turn of the winding.

The result can be written:

Q=ρwlcp·j2S.

Analysis of the obtained dependences shows that at constant current reduction section of the conductor leads to an increase in current density with you is a bookmark larger amount of heat.

In aircraft always very acute question under the selection of dimensions for placement of functional blocks. Therefore, the developer needs to find ways to reduce the size of the developed blocks. We show that the increase in current density at a given voltage on Board U and permissible current consumption value i, which determine the electric power consumption of the electromagnetic actuator of the dispenser, and invariable magnetizing force iw necessary for operation of the electromagnet, allows to reduce the dimensions of the winding.

Write expressions for the magnetizing force and the current density taking into account (1) and (2)

In accordance with (4) to increase the current density at constant U and w by reducing the length of the secondary coil winding lcf. At the same time to preserve the old values of the current and the magnetizing force in accordance with (3) is necessary to reduce the cross-sectional area of the conductor, i.e. its diameter, which ultimately reduces the dimensions of the winding. But the increase in current density, as mentioned above, leads to an increase in heat generated by the coil when it is functioning, and to ensure the winding operation without overheating you need more intensive is about to take heat, that is solved in the prototype due to the blowing of the entire stator.

For a small number of piloted aircraft (for example pturs) inherent in the very strict limitations on the size and power consumption requirements of its functional blocks. In such devices the use of the prototype at the existing level of its current becomes impossible. A more detailed analysis of its design showed that a certain part consumed by the electromagnetic drive electric power required for holding the armature at the end, when it is affected by air pressure from a closed nozzle, under which the anchor must not break away from the stop. The way to reduce power consumption of the electromagnetic actuator air valve used in the prototype is not able to resolve the issue by reducing the specified portion of the power consumption of the electromagnet.

Object of the present invention is to reduce electric power consumption high-speed air valve with an electromagnetic actuator by reducing the size to a level that allows it to be used without deterioration of performance in a small aircraft.

To solve this problem, a method for reducing power consumption is th electric power of high-speed air valve with an electromagnetic actuator, namely, that on the anchor, which simultaneously serves as the Executive element of the switchgear and which is set when de-energized windings of the electromagnetic actuator at mid-stroke of the armature with preload with its two opposite sides of the springs, the influence of electromagnetic forces which excite in accordance with the relay input signal alternately with each of the working side of the anchor. This distributed air fanned the stator.

The new method is that distributed by advanced air fanned the windings of the coils of the solenoid actuator and create the air pressure is equal in magnitude but with opposite signs of the forces acting on the anchor in the direction of its movement.

When the proposed method of reducing electric power consumption resultant force acting on the actuating element of the valve, i.e. at anchor, distribute them to high pressure air, no load on the anchor and consumed by the drive electric power in contrast to the prototype is only necessary to create a force to move the mass of the armature with the required performance. With the decline of the required electromagnetic force magnitude required magnetic flux is also reduced, which makes it possible to reduce the cross section of the magnetic circuit is, i.e. the dimensions of the actuator, and by jetting distributed air not only of the stator and the windings of the electromagnet increases its heat output, which allows to increase the current density and, as shown above, to reduce due to this, the dimensions of the winding.

To implement the proposed method of reducing the electric power consumption at smaller dimensions, the authors have developed a high-speed air valve with an electromagnetic actuator that contains an electromagnet stators, coils and a spring-loaded anchor, combined with the Executive element of the switchgear, the channels for the supply of air.

New in comparison with the prototype is that the stator of the electromagnetic actuator is made in the form of two concentrically arranged cylinders, connected by a solid jumper, located in their Central zone, the outer ends of the cylinder, whose height exceeds the height of the inner cylinder, closed lids. Between the cylinders on both sides of the jumpers are coils wound with gaps for air passage. Inside the cylinder of smaller diameter has a cylindrical rod shape, serves as the anchor of the double-acting. In the middle part of the rod is made of two radial grooves, and each end of the rod are deaf resp is rste, in which springs installed with guaranteed diametral clearance, resting in pojetom state in the cover and holding the rod with the same working clearances relative to the covers.

In the side walls of the cylinders around their perimeter is made of two rows of through inclined holes located symmetrically with respect to the links connecting the cylinders, which are also available through the radial holes, and holes are made in such a way that when the rod at any of the stops, a number of inclined holes located on the side opposite the stop, together with the holes in the bridge are aligned with the corresponding groove on the rod. While the cylinders, the rod and cap are made of electrical steel.

The technical solution is illustrated graphic material, where the drawing shows the construction scheme of the proposed valve with an electromagnetic drive.

The uniting part is the stator 1, is made in the form of two cylinders connected at their middle part of the bridge. Inside the stator on the frame 2 has two coils with coils 3, which are arranged with gaps inside the stator. The stator 1 with two sides closed by the lid 4, which are the poles. The anchor is made in the form of a rod 5 by means of springs 6, located in the deaf resp is rctech, along its axis, installed with the same clearances 7 relative to the lid 4. In the jumper connecting the cylinders of the magnetic circuit, there are through holes 10 that act as channels for the air vent into the atmosphere. On both sides of these channels in the cylinder walls are slanted holes 8 and 9, which are channels connecting the valve with the working cavities of the air motor, the steering actuator (not shown).

In the middle part of the rod has two grooves 11 and 12, designed for alternating connection of the channels 8 and 9 channels air vent 10.

Functions specified air distributor as follows. When filing in accordance with the control signal of the output voltage, for example, on the left winding rod is moved to the left in the left cover. While the right groove 12 on the rod is installed under the channels 10 and 9, connecting the right working cavity of the air motor, the steering actuator (not shown) to the atmosphere. Thus the air flowing through the channels blows and the stator, and the right winding, intensively its cooling. When the change of the sign of the control signal voltage is removed from the left winding and simultaneously served on the right winding. Under the force of the compressed left spring and the electromagnetic force, the excited right winding, CTE is Zhen moved to the right in the right cover. This left a groove 11 on the rod is installed under the channels 8 and 10, connecting left the working cavity of the air motor (not shown) with the atmosphere, and the air blows in addition to the left stator winding.

Grooves in the rod have the side walls of the same height, and hence the square, so the pressure is distributed air on the walls of the grooves produce the same efforts in opposite directions, not loading the rod.

1. The way to reduce electric power consumption high-speed air valve with an electromagnetic actuator, namely, that on the anchor, which is also an Executive element of the switchgear, and which is set when de-energized windings of the electromagnetic actuator in the middle of its stroke with the preload on opposite sides of the springs, the influence of the electromagnetic forces generated in accordance with the relay input signal, alternately with each of the working side of the anchor, with distributed air fanned the stator, characterized in that the distributed air additionally fanned the windings of the coils of the solenoid actuator and create the air pressure is equal in magnitude but with opposite signs of strength, acting on the anchor in the direction of its movement.

2. High-speed air valve with an electromagnetic actuator that contains an electromagnet stators, coils and a spring-loaded anchor, combined with the Executive element of the switchgear, the channels for the supply of air, characterized in that the stator of the electromagnetic actuator is made in the form of two concentrically arranged cylinders, connected by a solid jumper, located in their Central zone, the outer ends of the cylinder, whose height exceeds the height of the inner cylinder, a cover plate, between the cylinders on both sides of the jumpers are coil windings with clearances for the passage of air inside a cylinder of smaller diameter has a cylindrical rod shape, serves as the anchor of the double-acting in the middle part of the rod is made of two radial grooves, and each end of the rod there are blind holes, in which the springs with a guaranteed diametral clearance, resting in pojetom state in the cover and holding the rod with the same working clearances relative to the lid, the side walls of the cylinders around their perimeter is made of two rows of through inclined holes located symmetrically with respect to the links connecting the cylinders, which are also available through radial open the I, moreover, holes are made in such a way that when the rod at any of the stops, a number of inclined holes located on the side opposite the stop, together with the holes in the bridge are aligned with the corresponding groove on the rod, and the cylinder, the rod and cap are made of electrical steel.



 

Same patents:

FIELD: hydraulics.

SUBSTANCE: device comprises sleeve with step outer side and axial passage that receives two cylindrical collars of the step slide valve whose third collar is provided with face stop. The outer side of the smaller diameter of the sleeve is provided with the first and second grooves interconnected through the axial passage. The outer surface of greater diameter of the sleeve has two chamferings whose surfaces are connected with the axial passage through openings. The first collar is arranged near the face of the slide valve opposite to the stop to define a control chamber, is provided with two flat chamferings, and is made for permitting cooperation with the ports of the first groove in the sleeve. The second collar is separated from the third collar by a groove and is made for permitting cooperation with radial openings of the sleeve. The first groove is open from its face, and the ports of the second groove are connected with the space defined in the axial passage between the collars of the slide valve.

EFFECT: enhanced efficiency.

6 cl, 10 dwg

FIELD: fluid-pressure actuators.

SUBSTANCE: system of hydraulic valves comprises first actuating connection and the second actuating connection which are connected with the hydraulic consumer, system of supplying connections that has the connection with the pressure source and connection with the vessel, first valve system that disconnect the system from the pressure source or controllably connect it with the first actuating connection or the second actuating connection, second system of valves that disconnects the system from the vessel or connects it controllably with the first actuating connection or the second actuating connection, and control unit that controls the first valve system and second valve system. At least one valve system is provided with the pickup of the extent of opening connected with the control unit that controls the valve system depending on the signal from the pickup of the extent of opening and reference signal.

EFFECT: enhanced precision of control.

15 cl, 3 dwg

FIELD: production of hydraulic distributor for electro-hydraulic amplifiers.

SUBSTANCE: the hydraulic distributor is intended for use in electro-hydraulic amplifiers and is supplied with the drive of a sliding valve made in the form of a turning electrical motor, on the shaft of which there is a cantilever eccentric with a ball bearing. On the sliding valve there is a groove for interaction with the bearing and the shaft sealed with a reinforced sealing ring.

EFFECT: the invention ensures increased efficiency of the hydraulic distributor operation.

2 cl, 4 dwg

The invention relates to the field of hydraulic drive and can be used, for example, in hydraulic systems of aircraft

Proportional valve // 2219380

FIELD: production of hydraulic distributor for electro-hydraulic amplifiers.

SUBSTANCE: the hydraulic distributor is intended for use in electro-hydraulic amplifiers and is supplied with the drive of a sliding valve made in the form of a turning electrical motor, on the shaft of which there is a cantilever eccentric with a ball bearing. On the sliding valve there is a groove for interaction with the bearing and the shaft sealed with a reinforced sealing ring.

EFFECT: the invention ensures increased efficiency of the hydraulic distributor operation.

2 cl, 4 dwg

FIELD: fluid-pressure actuators.

SUBSTANCE: system of hydraulic valves comprises first actuating connection and the second actuating connection which are connected with the hydraulic consumer, system of supplying connections that has the connection with the pressure source and connection with the vessel, first valve system that disconnect the system from the pressure source or controllably connect it with the first actuating connection or the second actuating connection, second system of valves that disconnects the system from the vessel or connects it controllably with the first actuating connection or the second actuating connection, and control unit that controls the first valve system and second valve system. At least one valve system is provided with the pickup of the extent of opening connected with the control unit that controls the valve system depending on the signal from the pickup of the extent of opening and reference signal.

EFFECT: enhanced precision of control.

15 cl, 3 dwg

FIELD: hydraulics.

SUBSTANCE: device comprises sleeve with step outer side and axial passage that receives two cylindrical collars of the step slide valve whose third collar is provided with face stop. The outer side of the smaller diameter of the sleeve is provided with the first and second grooves interconnected through the axial passage. The outer surface of greater diameter of the sleeve has two chamferings whose surfaces are connected with the axial passage through openings. The first collar is arranged near the face of the slide valve opposite to the stop to define a control chamber, is provided with two flat chamferings, and is made for permitting cooperation with the ports of the first groove in the sleeve. The second collar is separated from the third collar by a groove and is made for permitting cooperation with radial openings of the sleeve. The first groove is open from its face, and the ports of the second groove are connected with the space defined in the axial passage between the collars of the slide valve.

EFFECT: enhanced efficiency.

6 cl, 10 dwg

FIELD: engines and pumps.

SUBSTANCE: method and device are intended for control system operated by gaseous working medium. The method consists in the following. With the switched off electromagnetic drive windings, the armature is set at its travel centre, and, during drive operation, electromagnetic forces are induced on the armature each side in turn. Here, air being distributed is forced to blast the electromagnetic drive stator and windings to create equal in size and opposite-sign forces acting on the armature along its travel. The distributor is made up of two concentrically located cylinders jointed by a connector in their central zone. Coils with windings are arranged between cylinders on both sides of the connector with a gap for air to pass through. The smaller diameter cylinder accommodates a cylinder rod making a dual-action armature with blind holes on its every end to accommodate the springs resting against the covers, thus retaining the rods with an equal clearance relative to covers. The cylinders walls have two rows of inclined holes symmetric relative to the connector jointing the cylinders.

EFFECT: lower electric power consumption.

2 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: valve has a body with the feed pressure supply channel, an outlet channel, a controlled pressure outlet channel and an inner boring accommodating a control valve with an inner channel with throttle communicating the inlet channel with the left-hand space formed by the body boring and the left-hand end face of the said control valve and communicating with the outlet channel via the control valve, and a channel communicating the outlet channel with the right-hand space formed by the body boring and the control valve right-hand end face and containing a return spring acting on the slide valve. The slide valve incorporates an additional spring-loaded channel communicating the right-hand space with the outlet channel, while the channel communicating the outlet channel with the right-hand space accommodates an additional throttle. In compliance with the other valve version, the right-hand space can communicate via the spring-loaded valve with the outlet channel. Here the additional spring-loaded valve is arranged inside the slide valve or in the main valve body.

EFFECT: smooth engagement of gearbox friction gear wheels.

4 cl, 5 dwg

Valve // 2347127

FIELD: machine building.

SUBSTANCE: invention relates to hydro pneumatic automatic control devices and can be used in aircraft hydraulic control systems. The proposed valve incorporates a body with the pressure, control and drain channels separated by two cups arranged in the valve body and provided with aligned grooves and holes. A push rod is arranged in the said grooves to move therein. The aforesaid holes in the cups are made on both sides of the push rod to contact, by their outer edges, with the ball-like shut-off members. One of the said balls, on the drain side, interacts with a spring-loaded rod moving inside the electromagnetic drive stator. Note that in one position of the aforesaid rod, the control channel communicates with the drain line while, in the other position, it communicates with the pressure channel. There is a spring-loaded plunger fitted in the valve body of the pressure side, its end face interacting with the shut-off member on the aforesaid side. Cylindrical collars are made on the outer surface of every cup on the side of holes and aligned with them. One of the said collar accommodates on the drain side a sleeve locked in a blind groove aligned with the sleeve through hole receiving a ball. The collar of other cup, but on the pressure side, accommodates a similar sleeve with the ball.

EFFECT: higher valve tightness.

1 dwg

FIELD: machine building.

SUBSTANCE: distributor is designed for supply and withdrawal of fluid into cavity of hydraulic engine and for protecting it from overloads, for locking cavity and for maintaining suspended load, for replacing load from cavity of hydraulic engine and damping to facilitate uniform motion at any specified speed. The distributor consists of a rectangular metal case of platen mounting with bypass, supply and drain lines, of a safety valve with a pilot, of a controlled valve with a pilot and two back valves each including a bush-seat, a ball and a spring. Also a safety valve is installed into the end of the case along its lengthwise axis; the valve is equipped with two control valves and the pilot. The control valve with the pilot is installed perpendicular to lengthwise axis of the case. Notably, under-valve cavity of the safety valve is connected with a side surface of the gate of the control valve and the drain line via a channel; the supply line is connected to the under valve cavity of the control valve; the drain line is connected with the side surface of the safety valve, while the back valves are installed in withdrawal channels of drain and supply lines; the back valves shut off the channels pressure tight from overflows of fluid from one line to another.

EFFECT: facilitating multi-functionality of device, simplicity of fabrication, high maintainability, easy control and high reliability.

5 dwg

FIELD: machine building.

SUBSTANCE: in amplifier there is implemented jet amplifier stage with two pressure nozzles and correspondingly with two receiving channels connected by means of their hydraulic lines with sub-end cavities of slide. The jet amplifier stage consists of two cylinder elements coaxially and with a gap installed in a case. A deflector gate of an electro-mechanic converter is arranged in slots in the cylinder elements from the side of ends facing each other. The pressure nozzle and the receiving channel are coaxially arranged in the slot of each element from the side of cylinder surface. Threaded sleeves are screwed on threaded ends of the cylinder elements from the side opposite to the slot. With their external thread the sleeves are screwed into the case. Also thread in the case, on the cylinder elements and correspondingly in the threaded sleeves has different pitch.

EFFECT: improved processability of fabrication, simplification of jet amplifier design and facilitation of its adjustment with high accuracy.

1 dwg

FIELD: machine building.

SUBSTANCE: two-position hydraulic distributor with pulse control refers to hydraulics and can be used as hydraulic equipment of mobile machines. A valve of the hydro-distributor slides along a guide block and is fixed in two points, when control pulse electric signal is transmitted to electro-magnetic valve.

EFFECT: reduced dimensions and weight of electric magnet, reduced power consumption, increased reliability of hydraulic distributor operation.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: flow control and control method of the control is intended for hydraulic system of working machine. Control includes housing with inlet hole and outlet hole, main bypass valve located inside the housing between inlet and outlet holes and including the forward end and hollow end. Valve has the possibility of being moved between open position in which the liquid flows from inlet hole to outlet hole, and closed position in which the liquid flow between inlet and outlet holes is locked. In addition, control has auxiliary valve having the possibility of being moved so that they can selectively attach hollow end of the main bypass valve to the drain, thus influencing the movement of the main bypass valve between open and closed positions. Besides, flow control includes solenoid mechanism intended to move auxiliary valve. Position of auxiliary valve depends on liquid pressure in inlet hole.

EFFECT: higher reliability of hydraulic system.

10 cl, 3 dwg

Up!