Start-up shutoff electric pneumatic valve of continuous low pressure. RU patent 2512600.
 Control of gas phase polymerisation reactor / 2507556Method includes determination of reactor efficiency ratio by polymer to pressure in a reactor, setting of reactor efficiency by polymer, and such efficiency on the basis of the specified ratio by the step corresponds to the desired pressure in the reactor, and correction of speeds of monomer supply into the reactor in accordance with the specified set efficiency. |
 Method to control gas tightness of working area in energy technology units / 2496070Method includes setting the required pressure in the working area of a unit, measurement of pressure in the working area of the unit, comparison of the measured value with the set one and generation of a control action at a gate or a shutter in a smoke tract. After measurement of pressure in the working area, oxygen concentration is measured in effluent smoke gases, as well as fuel consumption and coefficient of air excess according to the ratio "fuel-air for combustion", afterwards the value of atmospheric air suctions is measured into the working area of the unit in accordance with the following formula: G s = G f [ С o V 0 0,21 − C o − ( α − 1 ) L 0 ] , , where Gs - volume of atmospheric air suctions, m3/hr; Gf - fuel consumption, m3/hr; Co - oxygen concentration in combustion products, volume fractions; α - coefficient of air excess according to the ratio "air-air for combustion"; L0 and V0 - air quantity theoretically required for combustion of 1 m3 of fuel and theoretical yield of combustion products per 1 m3 of fuel accordingly, m3/m3, and the setting of the required pressure is corrected in the working area of the unit until achievement of the atmospheric air suctions value Gn, equal to zero. |
 Method of controlling process of removing permanganate reduced compounds using methanol carbonylation technique / 2493143Invention relates to an improved method of producing acetic acid comprising the following steps: reacting methanol with carbon monoxide in a reaction vessel containing water, methyl iodide and methyl acetate in the presence of a group VIII metal based carbonylation catalyst; separating products of said reaction into a volatile product phase containing acetic acid and a less volatile phase; distilling said volatile phase in a distillation apparatus to obtain a purified product of acetic acid and a first overhead fraction containing methyl iodide and acetaldehyde; condensing at least a portion of said overhead fraction; measuring density of said condensed first overhead fraction; determining relative concentration of methyl iodide, acetaldehyde or both in the first overhead fraction based on the measured density; and adjusting at least one process control parameter associated with distillation of said volatile phase as a response reaction to said relative concentration. The invention relates to a method of producing acetic acid comprising the following steps: reacting methanol with carbon monoxide in a reaction medium containing water and methyl iodide in the presence of a group VIII metal based carbonylation catalyst; performing vapour-liquid separation in said reaction medium to obtain a vapour phase containing acetic acid, methyl iodide, acetaldehyde and water, and a liquid phase; distilling said vapour phase in a distillation apparatus to obtain a purified acetic acid product and at least a first overhead fraction containing acetaldehyde and methyl iodide; condensing said first overhead fraction; extracting said first overhead fraction with water to obtain a raffinate containing methyl iodide and an aqueous extract; measuring density of at least one stream selected from a group consisting of said first overhead fraction, said raffinate and said aqueous extract; determining relative concentration of methyl iodide, acetaldehyde or both in at least said first overhead fraction, said raffinate and said aqueous extract based on the measured density; and adjusting at least one process control parameter associated with either distillation of said vapour phase or extraction of said first overhead fraction as a response reaction to said relative concentration. |
 Physical-chemical conversions of liquid-phase media / 2490057Invention relates to physical-chemical processes including realisation of reactions and preparation of emulsions and may be used at research centers and in industrial processes. In method realisation initial component with high specific volume in the mix compound is subjected to cavitation-acoustic agitation in pumping that mix via hydrodynamic apparatus to the mark of level indication tube to select the component dose. Then, valves are switched over to circulate said mix in the circuit vessel-mixer-pump-hydrodynamic apparatus-vessel and every component is metered out. Now, valves are switched over to dispense prepared product via hydrodynamic apparatus for further use. |
 Vortex pressure regulator / 2486573Regulator includes a supply pipeline connected via a channel through a gas flow regulating station to a temperature separation device representing a corrugated tube, the corrugations of which are made along a screw line, which is made in the form of a flattened cone, and through a diaphragm to a discharge pipeline connected to a pilot device. At that, positive feedback is provided via hot circuit with the channel between the pipeline and a temperature separation cylinder that includes a cross-piece with shaped blades smoothly straightening gas flow and a device for bypass of hot gas after the cross-piece to the centre of cold vortex on the cylinder axis. The inlet flow regulating station includes two and more round nozzles uniformly located in a circumferential direction with rings installed in them, with variable wall stiffness, elliptical cross section, varying flow cross-section, and made from elastic material. On the temperature separation device end there installed is a head with ribs made in the form of a screw, which contains in walls hot gas bypass channels connected to ribbed tubes spirally located in the channel about the temperature separation cylinder to provide the outlet of bypassed portion of hot gas from spiral tubes through holes made in the regulator housing to a gas ejector, the outlet of which is connected to the discharge pipeline. The head is rigidly attached to the stock that moves along the temperature separation cylinder axis and allows the change of its length. The outlet flow regulating station represents an elastic pipe installed at the temperature separation cylinder outlet in the path of the discharge pipeline and being at regulated pressure, which allows changing the flow cross section of the diaphragm. |
 Pressure regulator / 2486572Regulator includes a housing with inlet and outlet cavities and between them a spring-loaded sensitive element in the form of a shell, a setting cavity with an elastic element, a seat, a shutoff element in the form of a disc with a conical surface. The housing is made of two halves in the form of bowls with flanging, and in it there introduced and installed with stiff connection is a cylinder with the above mentioned shell located in it with outer surface of the bottom towards the seat installed in the inlet cavity. A safety spring is introduced to prevent mismatch of the control system at abrupt opening of the network. The elastic element uses working medium for springing of a sensitive element in the setting cavity; pressure energy of the above working medium is controlled with additional regulator tightly installed on the cylinder wall with its outlet on the side of the outlet cavity. |
 Reducer / 2468347Invention may be used in various fields of industry for reduction of gas pressure to the specified value and automatic maintenance of the specified pressure under cryogenic temperatures of working medium, in particular, when testing various devices with "cold" helium. In a reducer comprising a body, inlet and outlet nozzles, a filter at the inlet, a membrane unit with a loading spring, resting against a plate pressed with an adjustment screw, installed in a sleeve, a seat, a lever on an axis, fixed in the body, interacting with a needle to change the seat throughput section, according to the invention the membrane of the membrane unit along the outer diametre has flanging, for which a circular groove is arranged in the sleeve, at the same time on the membrane flanging at both sides there are rings fixed by means of welding, besides, the inner ring interacts with the sleeve, and the outer ring via a conical sealing gasket - with the reducer's body, in which there are semicircular stops that limit membrane sagging under action of a loading spring, and there is a damping unit, the stem of which, arranged at one axis with the membrane unit, at one side interacts with a spring-loaded split bushing, at the other - via a hinged joint is connected with a lever and a membrane unit, besides, between conical surfaces of the adjustment screw and plate there is a ball, at the outlet of the reducer there is a filter. |
 Pressure regulator / 2467375Invention refers to piping valves and can be used to control the flow rate and pressure of working medium (fluid, gas or steam) in systems of machine-building, chemical, gas industry and other industries. Pressure regulator consists of housing with inlet and outlet branch pipes, discs mounted in it and drive. Housing of pressure regulator is mounted in steam supply pipeline and made in the form of hollow cylinder in the plane of which on its internal surface and symmetrically to longitudinal axis of steam supply pipeline there rigidly fixed are two discs at least with two openings made in each of them for steam passage, and two turning discs mounted on the drive shaft and provided with corresponding openings are connected to them on their outer side. Drive shaft in central part between turning discs has larger diameter with formation of support ends for turning discs, which provide the limit stop for movable discs, and installation of adjusting plates. |
 Automated control system for forced ventilation in tight container and method of its application / 2453895Set of invention relates to means to control gas exchange between closed tight container and ambient medium. Unlike known designs, proposed automated system uses electrically driven air valves as actuators arranged in air lines communicating said valves with tight containers. Note here that said valve is additionally connected with oxygen pickup and microprocessor in one air line. In another line, it is connected with filter communicated with ambient medium. Besides said valve has direct and reverse electric connections with control unit via control lines and supply lines to control variation of position of valve working members. Additionally, tight container accommodates source of hydrogen and other gases, absorbents of gaseous products of catalytic oxidation of hydrogen and other gases. Invention covers also application of above described system in tight container. |
 Technological transmitter, its output data correction method and pressure transducer / 2451969Technological transmitter in production processes control systems includes a transducer, an electronic transmitter module and an inclination transducer. The technological transmitter reads in the technological process variable while the inclination transducer determines orientation of the transmitter the electronic module whereof generates output data of orientation process variable. |
 Proportioner / 2248030Apparatus includes housing, supplying and discharging pipelines and mechanisms for regulating relation and flow rate of components. Housing is in the form of set of sleeves with lids whose number is equal to number of controlled components. Movable and stationary partitions with flow-through windows are placed in said sleeves. Partitions divide cavity of sleeves by inlet and outlet chambers. Sleeves are provided with supplying and discharging pipelines respectively. Movable partitions are spring-loaded and they are mounted in splines of central sleeve in the form of cylinder. Said cylinder is placed in central zones of sleeves and lids and it is mounted in boundary lids. Each stationary partition includes rigidly secured to it lever for setting relation of fuel components. Said lever is fixed to housing by means of ball fixing member. |
 Automatic pressure control system in traction vehicle pneumatic system / 2258014Proposed automatic pressure control system in pneumatic systems of traction vehicles contains pneumatic connected with compressor drive by shaft of heat engine by reduction gear and variable filling fluid coupling. Input of coupling is connected with oil delivery control spool. Automatic pressure control system employs microprocessor continuous-action control member receiving signals of pressure in pneumatic system and speed o compressor rotation. Outputs of microprocessor control member are connected with amplifiers. First amplifiers is connected to winding of first electromagnetic connected with measuring spring and spool delivering oil into coupling. Other amplifier is connected through second electromagnet with electric signal-to-hydraulic signal converter which is also coupled with spool delivering oil into coupling. |
 Automatic adjustment device / 2262731Device has control device, like a computer, or adjusting device, or button station, input of which is functionally connected to one or more sensors, while output of this control device is connected directly or via amplifier to transformer or transformers, un given case in form of force or draining device, which maintain necessary pressure in hollow of executive mechanism of liquid or gaseous environment, executing mechanism to affect locking/adjusting organs, which influence target process directly. |
 Self-centering magnetic assembly for device for measuring linear displacement / 2276397Pressure adjuster contains main body with inlet and outlet apertures, throttling element, throttling element position indicator, magnetic flow indicator. Magnetic assembly for magnetic flow indicator consists of magnetic body, magnet, centering ring, positioned between magnet and magnetic body. Centering ring has shifted wall for centering magnet in magnetic body. |
 Vortex adjuster of gas pressure / 2282885Feeding pipeline is connected by channel through node for gas stream adjustment to cylinder of temperature separation and through diaphragm - to draining pipeline, connected to pilot device. Positive check connection is provided via "hot" contour by channel between pipeline and temperature separation cylinder, which contains crosspiece with profiled blades smoothly rectifying the gas flow and device for pass-by of "hot" gas after crosspiece into the center of "cold" vortex on the axis of cylinder. Node for adjusting gas flow contains minimally two nozzles, and profiled nozzle shutters fitting for these are mounted with possible rotation about holding axes. On "hot" end of temperature separation cylinder, ribbed head piece is mounted, containing in its walls channels for pass-by of "hot" gas, connected to pipes, positioned in the channel around temperature separation cylinder. |
 Method and device for pressure control in space / 2319126Method comprises maintaining a given pressure level in the control space with the use of a control circuit by measuring the pressure in the control circuit and in the space and comparing them one with the other and with the reference pressure level. When the pressure level in the control space deviates from the reference level, the amount of gas required to be introduced to or removed from the space is calculated thus maintaining the pressure above the pressure level in the control space if the pressure should be increased and below the level if the pressure should be decreased. The pressure difference between the control circuit and control space is maintained to be sufficiently small. |
 Gas pressure governor / 2319193Gas pressure governor can be used for provision of premises with low pressure natural gas. Governor has pas-by line made hidden inside case. Line is made in form channel in separation of case of governor. Pilot is made with channel where valve of pilot is centered. Governed throttle s mounted in wall of pilot in such a manner that its axis is parallel to axis of pilot and it is connected with chambers of pilot by means of channels. |
 Constant low-pressure shut-off electropneumatic valve / 2339991Constant low-pressure shut-off valve incorporates a control electromagnetic valve, a high-pressure chamber with a gas feed channel, a low-pressure discharge channel, a cylindrical bore with a movable element furnished with the valve stem and forming the control chamber on the rod side communicating with the aforesaid electromagnetic valve chamber, the said control chamber being furnished with a spring and communicating via the movable element and stem channel, on the other side, with the high-pressure chamber. The low-pressure chamber of the proposed valve is separated from the discharge channel by a discharge seat and a shut-off gate made integral with the said movable element. The aforesaid movable element and rod channel is separated from the high-pressure chamber by an additional seat arranged on the stem end face surface and an additional shut-off gate coupled with an additional device adjusted for a preset low pressure. |
 Reduction gear / 2344461Reduction gear comprises assembled casing, valve and command piston. Command piston is arranged in the form of cylinder having protrusion in near-bottom part, at that command piston provides possibility of valve reciprocal motion. Valve is arranged as tubular in the form of hollow cylinder together with command piston, contact end of valve at closed reduction gear rests against sealing insert of support. |
 Device and method for measuring factor of position of pressure controller throttling element / 2344462Pressure controller is arranged in the fluid medium flow channel and incorporates throttling element (32) which can move in the said channel. Drill pipe (30) is attached to the throttling element. The proposed device comprises first pressure transducer (34) to measure the pressure upstream of the said throttling element, second pressure transducer (35) to measure pressure downstream of the said throttling element, position pickup (40) to determined the throttling element position, flow meter (58) temporarily arranged downstream of the throttling element to read out the measured fluid medium flow. The proposed device comprises also processor (50) incorporating the stored algorithm designed to define the correction for factor of the drill pipe position proceeding from the pressures upstream and downstream, the throttling element position and measured value of fluid medium flow. In compliance with this invention proposed are also the system and method for calibration of temperature gage (48) coupled with the pressure controller. |
FIELD: machine building.
SUBSTANCE: start-up shutoff electric pneumatic valve is designed for shut-off of gas and its supply to a load with continuous low pressure. The start-up shutoff electric pneumatic valve comprises a cavity of high pressure with a gas supply channel and a cylindrical chamber separated from it with a fixed control seat and a control gate with a movable element, equipped with a pusher interacting with the control gate and creating a low pressure cavity in a chamber at the side of the pusher with a drain channel, and at the opposite side - a control cavity connected by a channel in a fixed element and a pusher with a movable seat, made in the end of the pusher, a tuning element for the specified low pressure, a mechanical spring arranged in the cavity of control and a control electromagnetic valve with an inlet seat communicated with a gas supply channel, a control element driven by an electromagnet, and an outlet seat. The control cavity is communicated with the cavity of the control electromagnetic valve with an outlet seat connected to atmosphere, and the gas supply channel is separated from the high pressure cavity by a fixed shutoff seat and a shutoff seat, making a whole with the control gate.
EFFECT: increased cost-effectiveness of gas supply systems due to elimination of gas leakage into atmosphere from a low-pressure cavity of a start-up shutoff electric pneumatic valve when closed, made in case of multiple connections and disconnections.
1 dwg
The invention relates to the field of gas supply systems and industrial pneumatic automation, and more specifically to the devices of automatics gas supplying, cutting-off and regulation of gas pressure.
Known gas-supply system containing pocketcache electropneumography, the pressure regulator and waste safety valve [Reactive management system spacecraft / NM Belyaev, I.E. Large, E.I. Uvarov. - Moscow: Mashinostroenie, 1979. - P.45, 2.5].
The advantage of this system is high efficiency provided by the ability of its devices to perform the functions of submission, cut-off and regulation of gas pressure in the multiple launches and subsequent trips, provided complicated by the flight program of the aircraft. However, the application of three single-function devices increases the dimensions and weight of the gas supply system, while these devices contain the same elements that can be used to construct more compact multifunctional unit.
Known pocketcache electropneumography constant low pressure [RF Patent №2255367 C1 27.06.2005]that is selected as a prototype and is a unit that can perform functions boscotrecase of electropneumography, pressure regulator and waste safety valve. He contains cavity high-pressure gas-feeding channel and separated from her motionless regulatory saddle and control gate cylindrical chamber with a movable item, provided interacting with regulatory shutter pusher and forming the camera on the part of the pusher cavity low-pressure discharge channel and communicated with her feedback channel working cavity and on the opposite side of the auxiliary cavity control, connected by a channel in the movable item, and the pusher of a movable saddle, made in the end face of the plunger, the option element at the specified low pressure, located in the auxiliary cavity management of a mechanical spring and managing the solenoid valve with intake saddle provided with gas-feeding channel, regulatory body, driven by an electromagnet and a final seat. Auxiliary cavity control unit communicates with the atmosphere and the working cavity with a cavity control solenoid valve, exhaust saddle which communicated with the cavity of low pressure.
The advantages of this unit is its ability in a single turn on the system gas supply to function boscotrecase of electropneumography, pressure regulators and safety devices, supporting open when working in the expenditure and betrachten modes constant pressure in the cavity of low pressure and communicated with her working cavity that, when the location is in this state, be considered as one of the joint cavity.
To the disadvantage of the unit should include the drainage of gas from the pipeline of low pressure in the environment during the subsequent closure of the unit manufactured in case of multiple inclusions and subsequent shutdown. The specified drainage leads to lower efficiency of the gas supply system and reduction of low pressure in the closed units to the pressure of the environment.
Technical achievement of the present invention is to increase the efficiency of the gas supply system by eliminating drainage gas into the atmosphere from the cavity of low pressure boscotrecase of electropneumography when it is closed, produced in case of repeated switching on and switching off.
The solution to this technical task is achieved that is known paskouscyna electropneumografia constant low pressure cavity containing the high-pressure gas-feeding channel and separated from her motionless regulatory saddle and control gate cylindrical chamber with a movable item, equipped with interacting with regulatory shutter pusher and forming the camera on the part of the pusher cavity of low pressure with tailrace canals, and on the opposite side of the cavity control, connected by a channel in the movable item, and the pusher of a movable saddle, made in the end pusher, setting item at the specified low pressure, located in the cavity of the control of mechanical spring and managing the solenoid valve with intake saddle provided with gas-feeding channel, regulatory body, driven by an electromagnet and a final seat, cavity management communicates with the cavity of the control solenoid valve on the outlet of the saddle, coupled with the atmosphere and gas supplying the channel is separated from the cavity of high pressure stationary off-saddle and shut-shutter constituting a single whole with the control gate.
Figure 1 shows the scheme boscotrecase of electropneumography constant low pressure (hereinafter - the unit) with cutoff cavity high pressure from gas supplying channel.
The unit contains a cavity of a high pressure with 1 gas-feeding channel 2 and separated from her motionless regulatory saddle 3 and control gate 4 cylindrical chamber 5 with a movable item 6, equipped with interacting with regulatory shutter 4 7 pusher and forming the camera on the part of the pusher cavity low davleniya 8 tailrace channel 9, and on the opposite side of the cavity management 10, connected by a channel 11 in the movable item 6 and 7 pusher with a movable seat 12, made in the end face of the plunger, setting item 13 on the specified low pressure, located in the cavity of management 10 mechanical spring 14 and managing the electromagnetic valve 15 the inlet saddle 16, communicated with gas-feeding channel 2, the regulatory authority 17, driven by an electromagnet 18, and outlet saddle 19. Cavity management of 10 reported with cavity control solenoid valve 15 prom saddle 19, coupled with the atmosphere and gas supplying channel 2 is separated from the cavity of high pressure 1 fixed cut-off seat 20 and shut-shutter 21, constituting one unit with control gate 4.
When working in the mode of pressure regulating the distance from regulatory shutter 4 to regulatory fixed seat 3 is usually a millimeter, and the distance from the shut-shutter 21 to fixed cut-off seat 20 may amount to several millimeters to exclude pre-throttling gas. In order to improve the performance of the unit volume of the cavity high pressure 1 is the lowest possible.
Above, the unit operates as follows.
When no signal U BX inlet solenoid valve 15 regulatory authority 17 under the force of high-pressure pressed to the exhaust saddle 19, ensuring the input of gas of high pressure P B in the cavity management 10, clamped shut-shutter 21 to still off the saddle 20 with great effort sealing and cutting-off cavity of low pressure 8 of gas supplying channel 2. In this closed unit movable saddle 12 pusher 7 pressed to regulatory shutter 4 under the action of the movable item 6 power high pressure in the cavity of management 10 and strength of a mechanical spring 14.
When the input signal U on the electromagnet 18 regulatory authority under 17 the force of the magnet is moved to the inlet saddle 16, delivering the message with the atmosphere cavity management 10 through the exhaust saddle 19 unit, which is in the open position before you begin tuned to a given low pressure P H using the setup item 13. In by reducing the pressure in the cavity of management 10 regulatory gate 4 and movable item 6 under the force of high-pressure shut-shutter 21 moved to the bottom of the adjustment provisions, ensuring the cavity filling high-pressure 1 and adjustable input of gas in the cavity low pressure 8 through the throttling hole between regulatory shutter 4 and stationary regulatory saddle 3 in the absence of the issue through mobile saddle 12 in the end face of the plunger 7, pressed to the regulatory shutter 4 power mechanical springs 14.
This unit out in the open, and as a prototype, performs a function not only of spring pressure regulator, and safety devices, providing with all power consumers and work in betrachten mode adjustable reset via mobile saddle 12 gas leak that appear in this mode, when a loose fit of regulatory shutter 4 to still governing the saddle 3 with a little effort sealing.
However, in the above-described closed, coming after you disable the input signal U BX , in this unit, unlike the prototype, there is no drainage gas into the atmosphere from the cavity of low pressure 8 through mobile saddle 12, which increases the efficiency of the gas supply system.
Thus, the declared plant provides with multiple start and turn off gas supply system tuning is of low pressure in the open, acting boscotrecase of electropneumography, spring pressure regulator and waste safety valve when working in expendable and betrachten modes, and excludes the above drainage of gas from the pipeline of low pressure in the atmosphere in the closed position, which increases the efficiency of the gas supply system.
If as a consumer of this unit to use the nozzle, the resulting adjustable gazorezatelnogo the Executive unit will create a constant reactive power without use as indicated above, single-purpose devices and units of gas supply system.
Pocketcache electropneumography constant low pressure cavity containing the high-pressure gas-feeding channel and separated from her motionless regulatory saddle and control gate cylindrical chamber with a movable item, provided interacting with control gate pusher and forming the camera on the part of the pusher cavity of low pressure with tailrace canals, and on the opposite side of the cavity control, connected by a channel in the movable item, and the pusher of a movable saddle, made in the end face of the plunger, setting item on given low pressure, located in the cavity of the control of mechanical spring and managing the solenoid valve with intake saddle provided with gas-feeding channel, regulatory body, driven by an electromagnet and a final seat, wherein the control cavity communicated with the cavity of the control solenoid valve on the outlet of the saddle, coupled with the atmosphere and gas supplying the channel is separated from the cavity of high pressure stationary off-saddle and shut-shutter constituting a single whole with the control gate.