Solenoid valve

FIELD: electricity.

SUBSTANCE: solenoid valve has locking group, inlet and outlet pipes, heating element and switch. First switch input is connected with common wire of on-board power system. The second switch input is linked with power line for solenoid valve heating and connected to anode of first diode. Cathode of the first diode is integrated with cathode of the second diode and connected to the first winding of solenoid valve. The third switch input is connected to power line for solenoid valve switching on, linked with anode of the second diode, with the first end of the first relay and with triggering input of univibrator. The second end of mentioned relay is connected to common wire. Univibrator output is supplied to the first end of the second relay winding. The second end of this relay is supplied to common wire of on-board power system. Timing input of univibrator is connected with central contact of relay group of the first relay. Temperature transmitter is connected to circuit-opening contact of relay group. It is mounted near solenoid valves windings. Inlet pipe is linked with locking group connected with outlet pipe. The second relay group of contacts for the first relay is connected with common wire of on-board system, with relay group of contacts for the second relay and with the second valve winding. Relay group of the second relay is connected with the first solenoid winding. It is connected to common wore of power supply and to cathodes of the first and the second diodes.

EFFECT: reliability enhancement; reduction of material consumption and improvement of serviceability.

3 dwg

 

The invention relates to shut-off device with a device for removal of condensate from air routes and can be used in valves and flow control of the air in the pneumatic railway transport.

As the formulation of the problem the following should be noted. Enterprises of the railway industry, engaged in manufacturing and maintenance of rolling stock, are constantly faced with the challenge of ensuring the health of an electropneumatic equipment in the cold season. One of such products is a valve for discharge of condensate from the brake tank locomotive. The working pressure range of 0-1 MPa. The range of ambient temperature - 60...+70°C. the diameter of the passage 8 mm Valve designed to Samothracia in the cold season, i.e. in the situation when the idle time inside the valve can freeze water condensate. To solve this problem there are various devices.

It is known an invention avts No. 756120, CL F 16 K 49/00, Appl. 01.12.79. It describes a valve device, comprising a housing with cavities of high and low pressure, saddle, interacts with a stop valve, and a device for heating, and a device for heating is made in the form located in the district heating valve, for example, clicks the spas with a shut-off body in the form of a spring-loaded Cup, the cavity which is in communication with the cavities of high and low pressure valve device.

It is known an invention avts No. 417670, CL F 16 K 49/00, Appl. 28.08.72 describing the device to prevent icing pneumogenerator having input and output connections, through the impact on overseasa bodies environment with a temperature higher than the point of icing, it is made in the form filled in a heated environment, such as alcohol, a closed tank, the lower and upper parts of which are connected by channels to the inlet side of the heated apparatus.

Of all similar devices closest to the technical essence is described in the source: Krylov V.I., Krylov V.V., Efremov, V.I., Demushkin PT Brake equipment of railway rolling stock. The Handbook. M.: Transport, - 1989. (S - electro-pneumatic valve poddavki KP-100). This device is selected as a prototype. It contains a shut-off element, inlet and outlet of the heater element.

The specified device solves the problem of health electropneumatic equipment and the problem of thawing frozen condensate. However, it is not achieved technical result, expressed in increasing reliability, reducing material consumption. Accordingly, it n is provided with sufficient maintainability and ease of operation.

This technical result is achieved by the fact that in the known solenoid valve, shut-containing site, inlet and outlet, a heating element, inputs of the switch, the first switch input is connected to GND on-Board power supply, the second input switch connected to the power line, intended for the heating of the electromagnetic valve and is connected to the anode of the first diode, the cathode of which is combined with the cathode of the second diode and connected to the first winding of the electromagnetic valve, the third input of the switch is connected to the supply line enable electromagnetic valve and is connected to the anode of the second diode, with the first end of the first electromagnetic relay, the other end which is connected to the common wire, and trigger input of one-shot, the output of which is served on the first end of the winding of the second relay, the second end of which is filed on the common wire on-Board power supply, and timing input of one-shot is connected with the Central contact of relay group of the first relay, the break contact of which is connected a temperature sensor mounted near the windings of the electromagnetic valve, inlet pipe connected with stop node, connected to the outlet pipe, a second relay contacts of the first relay are connected to a common wire-Board set is, with relay contacts of the first relay and the second winding of the electromagnetic valve, with the first winding of which is connected the relay group of the second relay is also connected to a common power supply conductor and to the cathodes of the first and second diodes, the input of which is connected with the winding of the first relay and the input of one-shot, the output of the one-shot is connected to the input of the second relay and the output of the temperature sensor, the input switch is connected with the anode of the diode of the first diode, the cathode of which is connected with the first winding of the electromagnet, the second input of the switch through the anode of the second diode is connected with the cathode of the first diode, the contacts of the first relay is installed with the ability to change the serial or parallel the inclusion of the second winding to the first winding, the inlet is connected to the input gate node of the electromagnetic valve provided with windings of an electromagnet, the outlet is connected with the output device.

In the process carried out search for sources of scientific and technical patent information not found similar devices with the above set of essential features that provide the claimed technical result. Thus, the present invention is a technical solution to a problem, which is new, industrially applicable and inventive.

p> Figure 1 shows a General view of the prototype.

Figure 2 shows a General view of the device.

Figure 3 shows a schematic diagram of a device.

The inventive device includes a switch 1 and the electromagnetic valve 10. Input 2 switch is connected to GND on-Board power supply. Input 3 switch is connected to the power line, intended for the heating of the electromagnetic valve and is connected to the anode of the diode 5, the cathode of which is combined with the cathode of the diode 6 and is connected to the winding 12 of the electromagnetic valve 10. Input 4 switch connected to the power lines turn on the valve and is connected to the anode of diode 6, with the first end of the electromagnetic relay 7, the second end of which is connected to the common wire on-Board network, and trigger input of one-shot 8. The output of one-shot 8 filed on the first end of the winding of the relay 9, the second end of which is filed on the common wire on-Board power supply. Moreover, the timing input of one-shot 8 is connected with the Central contact of relay group 7.1, the break contact of which is connected to a temperature sensor 11. It is mounted near the windings 12; 13 of the electromagnetic valve 10. Through the inlet pipe 14 of the controlled medium is delivered to the gate node 15 is connected to the outlet pipe 16. Relay contact group 7.2 are connected to the common wire of the on-Board network with relay contacts 9.1 and ammo the coy valve 13, with winding 12 which is connected the relay group 9.1 also connected to the common wire of the power supply and to the cathodes of the diodes 5, 6. The device implements four modes of operation of the electromagnetic valve by switching its two identical windings (12; 13) and works as follows:

1. When power is applied along the line of "WARMING up" to the input 3 of the switch 1, the current flows through the diode 5 to the normally open contact of the relay group 9.1 (as shown in figure 3) and at the beginning (marked point) winding 12 of valve 10. The end of this winding through the normally closed contact of relay group 9.1 served at the end of the winding 13, the beginning of which is through the normally closed contact of relay group 7.2 are connected to a common power wire. Thus, it is realized electrically series connection of the windings 12 and 13 at their opposite magnetic inclusion (through the winding 12, the current flows from the beginning to the end, and through the winding 13 from the end to the beginning.) Further, this mode is referred to as heating with a rated capacity.

2. If the temperature of the magnet, measured by the sensor 11 is below a predetermined threshold, the sensor, breathalyser input of one-shot 9, generates at its output the signal of the constant switching relay 9. For example, if the one-shot 8 is implemented at the transistor (field), as the temperature sensor 11 can be used thermistor, shifting the second transistor of the one-shot in an area of permanent opening. In this case (the temperature below the threshold specified by the sensor 11) relay 9 will work through a contact group 9.2 of this relay coil valve 13 is connected by its end directly to the cathode of the diode 5. Through it line "WARMING up" is entered in the switch, and the beginning of this winding remains connected to ground through the normally closed contact relay 7.2.

Thus, it will be connected to winding 12; 13 and will remain on the counter by the magnetic flux, but will be electrically connected to the power line "WARMING up" in parallel. Further, this mode is referred to as forced heating. When heated, the temperature sensor 11 is higher than the set temperature, the one-shot 8 go into a closed state (transistor version) the relay coil 9 is de-energized, the contact group 9.1 will go into a state shown in the diagram, and the winding will be connected in opposite to the magnetic flux and in series electrically. Thus, after the forced heating to a predetermined temperature, the valve will go to the warm-up to rated power. This heating will continue until the moment when the line "WARMING up" will be shot power or until food appears on the line "ENABLE" valve (input 4 switch).

3. When power is applied to the line "ENABLE" valve (switch input), triggered relay 7 and breaks the circuit of the temperature sensor through the contact group 7.1. The sensor is already not affect the one-shot (8), which now goes into standby mode trigger input and is triggered on the input from the signal directly from the line "ENABLE" valve received at the input of the switch 4. Time the one-shot is set about 1...2, and is determined to provide guaranteed with a large supply of actuation of the electromagnetic valve. Contact relay group 7.2, when a relay 7, commutes beginning and end of the winding 13 so that this winding is included consistently in the magnetic flux from the coil 12. Moreover, until the one-shot 8 and the switch 9 is in an on state, the contact group this relay (9.2) connects the start winding 13 (via relay 7.2) directly to the cathode of the diode 6, through which the power line "INCLUSION" valve, input 4 switch. The end of winding 13 through the relay contacts 7.2 and relay contacts 9.1 is connected to a common power wire.

Thus, going scheme, where the windings of the electromagnet is included consistently in the magnetic flux and in parallel electrically. Further, this mode is designated as the mode of forced inclusion. In this mode, the electromagnet develops effort, at least two times greater than the force if the windings have been included consistently in the magnetic flux and sequentially electrically. Thus, with the increased stress that occurs the switching device 15 of the valve in the open state and the overcoming of its moving parts of the stroke to the circuit of the magnetic flux in the circuit of the electromagnet.

4. At the end of the pulse output of one-shot 8 holding relay 9 is in the on state, the contact group 9.1 the relay returns to the state shown in figure 3. The coil 13 is electrically connected in series with the coil 12 and in concert with her on the magnetic flux. The magnet goes into the "HOLD" of the valve. In this mode decreases the power consumption by the INCLUSION of an electromagnet. Simultaneously falls and magnetization in the gap of the magnet. But because the status of "ENABLE" the gap in the magnetic circuit is small, the induction enough for a confident hold the valve in this state.

Thus, in the mode of heating at the rated capacity and the forced heating of the windings of the magnet is always on the counter by the magnetic flux. These modes differ only in serial or parallel electrical connection of two windings of the magnet. In the forced modes of inclusion and retention of the winding is always on the SOG is yovanno by the magnetic flux. These two modes differ from each other only serial or parallel electrical connection.

In all four modes, the current in any case, flows through the windings of the electromagnet. The difference is that rated current flows in nominal modes warm-up and retention. Maximum current flows through the electromagnet in the modes of forced heating and forced inclusion. The power consumption in modes of forced heating and forced inclusion equal to each other. The same applies to the power consumption in modes nominal heat-up and retention. In General, the valve is heated in any of the four described modes. In a pair of forced modes (warm-up or hold) the valve is heated at a higher power. A couple of modes nominal heat-up and heat retention occurs when the nominal (series connection of the windings) consumption. And the logic circuit operation is such that the signal "ENABLE" valve has the highest priority relative to the signal "HEATING". This priority is implemented by the switching relay 7 only on the signal "ENABLE". "The signal "HEATING" can control the commutation of the windings (counter/coordinated by a thread) only when de-energized relay 7. Relay 9 provides a transition from an electrically serial incl the deposits to the parallel connection of the windings. Winding 12; 13 are of the same ampere-coils and the way they are placed on the magnetic valve. This is due to the requirement of good mutual compensation of their magnetic fluxes on the modes of warming, to prevent false actuation of the valve when the bias magnetic fluxes from the two opposite windings included. However, the requirement of identity of the threads formed by the windings 12; 13, is not technically hard.

EXAMPLE 1. For samples tested each of the windings have approximately 2400 ampere-turns (if enable parallel windings). In the "INCLUSION" (forced activation) ampere-turns are added and give the total magnetizing force of about 4800 ampere-turns. On hold will be, respectively, at 1200 ampere-turns of the winding and 2400 ampere-turns in total. If the windings are made inaccurately, for example with a deviation of 10% (for the modern practice of making it a lot), the distortion in the magnetic flux and amounted to at least 10% of each winding. For example, one winding is deviated in plus (amp-coils) and the other is in the negative. Then the total distortion will be 240+240=480 ampere-turns in the mode of forced inclusion and 240 ampere-turns in the hold. And in fact, and in another case it will be only 10% of the magnetizing force, implemented in this mode. Thus, even when obviously for asenna the tolerance on the accuracy of manufacture (normally up to 3%), in the mode of heating the magnet will develop no more than 10% of the efforts developed in the mode "ON" when the corresponding electrical connection of the windings. If this magnetizing force could be the opening or holding of the valve, this would mean that the project mode overpriced products just ten - triggered or on hold. Current practice, known to the authors of the present description, provides (as a maximum) dual supply mode forced on and fourfold in the hold. In practice, the tests described device was experimentally found that the force residual (temporary) magnetization after switching off the magnet directly from "INCLUSION" was 300...500 g (the force of the residual magnetization in the technique is called "sticky" and overcome the estimated return spring). In the case of deactivation of the magnet passing through the heating mode (counter enable windings) residual stress was stable zero. This is in good agreement with the magnetization curve used in magnetic alloys. For example, the magnet so that the asymmetry of the two windings is greater than the threshold hold the valve in a state of "ENABLE". Note that this asymmetry can arise only in case the e, if the magnetizing force one winding substantially greater than the magnetizing force of the other winding. Technically it is very easy to connect the winding 12; 13 with the switch 1 so that during the transition from the holding mode to the heating mode at nominal power will switch the direction of current flow in the winding, the magnetizing force which is greater. Thus, after the transition in the heating mode at nominal power (hold) in the magnet will act magnetizing force unbalance (asymmetry) between the two windings. Directed this magnetization is opposite to the force that acted magnet on hold. That is, in this case, will be implemented demagnetization. It reduces the residual magnetization, but the asymmetry in this case should be comparable with the magnetization in the hold, in order to overcome the coercive force in the magnetic circuit, and then magnetize it in the other direction. Thus, the proposed design of the electromagnetic valve with the switch and two switchable windings, not only does not impose additional requirements on the technology of manufacture of the valve, but also provides the opportunity to use the demagnetization effect by changing the direction of the induction in the magnetic circuit.

EXAMPLE 2. For nahled the STI is comparable suggestion with the embodiment, which can serve the immediate and the obvious replacement of the prototype at its improvement. Namely, consider the variant where the heater is wound in the form of additional heating coil, for example, nichrome wire. Moreover, this additional winding is performed on one coil (unlike the prototype) with the main traction winding of the electromagnetic valve. This option is comparable with the proposed design. General conditions for specific electromagnetic valve with a nominal diameter of 8 mm is such that it would be optimal to its consumption (with appropriate heat) value 25...30·A. In this case ensures long life for dissipation in a constant turn at any time of the year. That is, when any real ambient temperature range - 60...+70°C. the power dissipation is quite (guaranteed) is sufficient to maintain the solenoid valve in temperature above the freezing point of the condensate in the negative part of this temperature zone. When performing an electromagnet with a separate heating wire, such as nichrome wire, it is technically difficult to ensure that the capacity of this winding is higher than 15 In·A. Power main (traction) of the winding should be about 40·And to guarantee when Abadiania under conditions given the nature of the operation. For example, taking into account the voltage drop in the power supply at the maximum heating (high resistance, with the fall of the magnetizing force) traction windings. To increase the capacity of the traction winding is impractical for reasons of overheating of the valve in a constant turn. Thus, a variant with a separate heating coil has the characteristics as in the lower parts of zones desired settings for heating and stock traction. For example, to defrost condensate requires the electromagnet (for heating) approximately 30 minutes prior to beginning work. However, this condition is implemented in practice, including for the prototype. The proposed variant of the electromagnetic valve is tested with two windings, each of which has an electrical capacity of 50·And when applying for her just supply voltage of the electromagnet. That is, in parallel operation in the windings of the electromagnet is allocated a capacity of 100 In·And, as with successive 25·A. Power 100 In·And highlighted in the modes of forced heating and forced inclusion. Power 25·And highlighted in the modes of heating at the rated capacity and retention.

In the mode of forced heating power 100 In·And allows you to melt the frozen condensation 5..7 minutes at the lowest modes of operation (almost condensate at these temperatures is not formed). After reaching the solenoid valve temperature sensor, the magnet moves in the heating mode at nominal power. In this case, 25·A. Mode of forced integration continues for a maximum of 2 seconds and does not affect the average power consumption. Do not call this mode and overheating of the magnet. The solution allows the manufacturer does not change the production technology of the electromagnet as a design element, mastering this package its products control regimes and to supply the market with products that meet objectively existing queries.

As examples of the structural design can note the following. When designing a valve had to take into account the constructive difficulties use for heating special winding, for example, nichrome wire. In this case we have to balance the desire to ensure the maximum possible for all design capacity of the heating element and the relatively small volume of this element, in which there is intense heat. In addition, it is necessary to consider the understandable desire of the consumer to have a valve with replaceable coil of an electromagnet, which can be inconvenient if there are two components of the heating element and power (traction) winding. Thus, PR is had to search option the subjects that at first glance seem contradictory. As often happens, it was possible to link the solution of several problems in a single design solution. The electromagnet has only one "traction" winding made of copper winding wires. The heating element magnet has quite. Thus "pulling" the winding is divided into two identical sections. If necessary, heat the two sections of the winding are connected in series electrically and counter - magnetic flow. The magnetic field of the two sections completely cancel each other out. Thus, the magnet is not "magnetic, and only generates heat equal to the heat generated by "working" the inclusion of the windings. If necessary to open the valve two sections working immediately before the signal "open" on heating (opposite to the magnetic field, in the cold season) switch to the consistent inclusion. The valve is triggered. When power from the line include the valve winding again switch on the heating, if the bus is "heat" is the voltage. If the voltage on the bus "heat" no, the valve is fully turned off. Thus, in winter, when the bus is "heat" (power bus) is switched on, the electromagnet is constantly under tension. In case of power on the bus to enable the, is simply switching the magnetic coherence always on the windings. In the warm season, when the power on the bus "heat" is not available, the winding of the magnet is energized only when the power on the bus enable. The power to the electromagnet along the lines of "enable" and "heat" is from the network trains 110 volts DC. This ensures the valve from the low-power 77 volts at pressures up to 1 MPa. This device uses standard relays, diodes and other electrical elements of the respective denominations. The windings are copper wire. In the context of manufacturing technology, we offer solenoid valve simpler design, which would use a separate heating coil, or separately manufactured and mounted (as in the prototype) heating element. In the proposed design of the electromagnetic valve goal is realized by switching two identical windings of copper wire. Technically, these two windings are formed in the same mode as standard winding of the magnet. The only difference in the two additional branches separating technologically single coil on the two windings. Winding copper wire characteristics and heat conductivity, allows razor the magnet VA is much more effective, than this could be done using, for example, the additional winding nichrome wire. For clarity, here it would be recalled that the wound with nichrome in several layers in practice almost never used. Too large will the specific heat at low heat conducting capacity of the wire. Inevitably there will be a point of local overheating. Likely multilayer nichrome heater will last long. In the proposed embodiment, are not realized any use of the winding of the electromagnetic valve, in addition, which is standard for any of the electromagnet. Heating is accomplished by changing the direction of the induction created two identical windings. For winding in this case is no different from the operation in the normal mode to the inclusion of any electromagnet. Compared to the option of the heated valve where the heater would be performed separately (e.g., as in the prototype) in the proposed design entered the switch. Without this addition to the prototype unit we offer valve cannot be implemented. But you should not forget is technically and technologically, this newly introduced unit is simple and cheap. In different climatic and elemental variants (relay, solid-state) value of the switch will not exceed 5...7% from SRT is on the whole valve. Moreover, the cost of all the proposed device is substantially lower than the cost of a set of prototype anyway. Yes, technically the prototype, which has no switch, still has a node (junction box in the form of a single box), which implements switching of suitable wires. For example, between the solenoid valve and the heating element. Modern techniques such junction box in cost is well comparable with any similar (e.g., switch in the proposed device) box. This schematic design of the junction box (switch) does not introduce significant share in its cost. You should also consider an obvious trend towards the implementation of the electromagnets of the two modes - forced inclusion and retention. In the construction of any electromagnet is already sure to be a device that implements these modes. In this regard it can be stated that the introduction of the switch in the proposed design only meets the requirements of the modern market. The proposed solution allows the manufacturer does not change the production technology of the electromagnet as a design element, mastering this package its products control regimes and to supply the market with products that meet objectively) is relevant to the query.

As can be seen from the above, it is stated set of structural characteristics provides improved reliability and reduction in the material intensity of products. In addition, its implementation allows to improve the maintainability and usability. Provides a significant reduction in weight and space occupied by the device. The above technical result cannot be achieved with the use of the prototype. The manufacturer specified device is possible in terms of the engineering enterprise with a standard set of equipment.

Solenoid valve, shut-containing site, inlet and outlet, a heating element, characterized in that it additionally introduced switch, the first switch input is connected to GND on-Board power supply, the second input switch connected to the power line, intended for the heating of the electromagnetic valve, and is connected to the anode of the first diode, the cathode of which is combined with the cathode of the second diode and connected to the first winding of the electromagnetic valve, the third input of the switch is connected to the supply line enable electromagnetic valve and is connected to the anode of the second diode, with the first end of the first electromagnetic relay, the other end of which is connected to the common wire, and runs in the Odom the one-shot, the output of which is served on the first end of the winding of the second relay, the second end of which is filed on the common wire on-Board power supply, and timing input of one-shot is connected with the Central contact of relay group of the first relay, the break contact of which is connected a temperature sensor mounted near the windings of the electromagnetic valve, inlet pipe connected with stop node, connected to the outlet pipe, a second relay contacts of the first relay are connected to the common wire of the on-Board network with relay contacts of the second relay and the second winding of the electromagnetic valve, with the first winding of which is connected the relay group of the second relay is also connected to the common power wire and to the cathodes of the first and second diodes.



 

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4 cl, 7 dwg

FIELD: valving systems.

SUBSTANCE: solenoid-operated valve comprises housing (1) with supplying branch pipe (3), piston type servo drive made of piston (6), hydraulic cylinder (7), spring (13), charging opening (14), and relief opening (15) mounted in guiding pipe (16). The face of pipe (16) is overlapped with sealing disk (28) mounted on the bottom of bushing (17). Bushing (17) is made in face (18) of a hollow conical electromagnetic armature. Housing (19) of the armature is located in the zone of action of magnetic space (26). The space is formed by yoke (23) and central ring member (25). The central ring member together with housing (24) define electromagnetic drive of the valve. Outlet branch pipe (3) of the valve is mounted on the face of housing (24) of the electromagnet. The valve has a manual doubler. The manual doubler is provided with axle (31) with sealing members (32) and member (33) for affecting the armature and handle (34) with spring (35). Member (33) is interposed between the faces.

EFFECT: expanded functional capabilities.

7 cl, 5 dwg

FIELD: oil producing industry.

SUBSTANCE: invention relates to control valves to be used at completing of wells, particularly, to control valve with drive to control its state and, by means of this, state of main valve used in well in which state of control valve is controlled by drive.

EFFECT: optimization of flow and control.

24 cl, 4 dwg

FIELD: pipeline armature engineering, possible use in devices with remote control over working substance flows in main transportation systems for them.

SUBSTANCE: electromagnetic valve contains body with inlet and outlet branch pipes, electromagnetic drive with control winding, lower and upper heads, main valve and pilot valve. Main valve is made in form of a piston with forcing aperture and flow channels. Pilot valve is controlled by pressure of above-piston hollow of the main valve. The main valve is made of magneto-soft material, and is an element of differential magnetic system of electromagnetic drive and contains a rod in the center of the piston. A recess is made on the rod. The recess is forced into the zone of lower head during opening of main valve. In the moment of insertion into the zone of lower head the recess ensures change of direction of magnetic flow over the pole and fixation of plunger when the valve is fully open. The pole is made on the lower head on the side of main valve. An aperture is made in the central rod of main valve in axial direction. A pusher is mounted in the aperture with organized working space. The pusher provides control over the slide of the pilot valve.

EFFECT: improved magnetic system of electromagnetic drive of valve, stable fixation of locking organ of main valve and prevention of forced oscillations.

2 dwg

FIELD: instrumentation engineering.

SUBSTANCE: circular passage is made in monolithic blank in form of bath where non-magnetic ring is placed; ring is preliminarily divided into equal parts which are rigidly secured and are connected by welding. Similar clearances are checked and joints are made by vacuum soldering. Non-magnetic ring magnetically divides body over perimeter of conical surface into two parts forming equal areas of surface; side walls of non-magnetic material are located orthogonally relative to this surface. Proposed method ensures enhanced reliability of connection of two parts of electromagnetic valve body by vacuum soldering through non-magnetic ring, thus providing for electromagnetic isolation for enhancing magnetic action on armature.

EFFECT: enhanced reliability; reduced usage of metal.

2 cl, 3 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention relates to fuel equipment for metering and injecting fuel into internal combustion engine. Proposed electromagnetic metering valve for internal combustion engines is essentially hydraulic valve driven by quick-acting electromagnet operating at impulse mode and having two stable positions, namely, completely open and completely closed, in which metering of fuel is performed by changing time of open state of valve whose duration is directly related to duration of control electric pulse supplied to winding of nozzle electromagnet. Holes of equal diameter are made in shutoff-control plate, holes being non-uniformly arranged over plane of fitting to end face of solenoid and seat of valve.

EFFECT: increased speed of response of electromagnetic metering valve.

1 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed valve contains body with electromagnetic drive with housing of electromagnet and shutoff device. Shutoff device includes gate in form of plate made of ferromagnetic material, and seat. One side of gate points to stop made of form of projecting bead on end face of electromagnet housing, and other side points to seat made of paramagnet material with sealing surface in form of bead separating gas supply space from gas feed space. Seat is separated from electromagnet housing by bushing with uniformly spaced holes to pass gas. Two ring grooves are made on sealing surface of valve seat. Inner groove is constantly connected with gas supply space by channels, and through end face clearance between gate and seat, when valve is open, with gas feed space and simultaneously with outer ring groove. Outer groove is connected through end face clearance with gas supply space and simultaneously is constantly connected through channels with gas feed space. Gate in form of plate is suspended on two extension springs. Lower spring exceeds upper spring in force.

EFFECT: improved mass-dimensional characteristics of valve, reduced power consumption, improved operation reliability.

2 cl, 1 dwg

Valve // 2282770

FIELD: valving.

SUBSTANCE: valve comprises housing with inlet port, outlet port, seat, and movable valving member or control member. The member is connected with the pulse drive through the flexible impermeable member. The valve is provided with additional pulse drive mounted inside the housing, two devices for converting and reducing the pulse reciprocation into interrupted forward motion or rotation, or curved motion. The converting devices are connected with the valving member, control member, and pulse drives through flexible impermeable members.

EFFECT: enhanced reliability and prolonged service life.

2 dwg

Controlled valve // 2244187

FIELD: valving.

SUBSTANCE: controlled valve has housing with inlet and outlet branch pipes and pipe for recirculation of fluid.

EFFECT: simplified design and enhance efficiency.

3 dwg

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