FIELD: machine building.
SUBSTANCE: pulsator comprises a casing with sealed pulsation chambers 1, where motor-driven shafts 2 with discs rigidly fixed on them are mounted coaxially to the chambers. The casing consists of 4 vertically set cylindrical pulsation chambers 1 that are communicating and are symmetrically set on mutually perpendicular axes in plan view. The chambers 1 are connected pairwise by two parallel upper branch pipes and perpendicular to them - by two parallel lower branch pipes. The discs are installed at an angle to the shafts 2 in their central part so that their upper edge is below the upper branch pipe and the lower edge is above the lower branch pipe. External branch pipes 8 are mounted at the casing diagonals on the outer side of every chamber at half of their height.
EFFECT: increased efficiency of item washing.
4 cl, 5 dwg
The invention relates to the field of power engineering, in particular to methods of washing contour of atomic systems paroprovody installations (APPU), and can be used for flushing of piping and hydraulics systems of various transportation facilities, and repair of power and transportation systems.
The life and operational reliability of systems for various applications depends on the purity of inner cavities, careful cleaning can prevent premature wear of critical components and to increase the duration of their uptime. Therefore, the purity requirements of internal cavities and channels are required for virtually all systems and power plants, including nuclear. These requirements are set out in the relevant regulations.
Modern washing methods can be divided into instantaneous and intense. The duration of the wash systems running method is sufficiently large, and the approximate complexity of flushing pipelines hydraulic systems can be up to 40% of the total time spent on the manufacture and Assembly of the entire unit. The drive power of once-through wash stand in shipbuilding can reach more than 100 kW, so the cost of electricity across Cadastro the part of the plant is very significant.
These shortcomings of the method straight flush can be greatly reduced using the method of intensive leaching. For intensive wash in flow wash stands include devices intensification flushing of pipelines and systems.
There are several methods of intensive flushing of pipelines and systems. Of these methods the most practical spread rinsing method of a pulsating flow and flushing method of changing the direction of movement of the scrubbing medium.
The pulsating flow of the scrubbing medium arises from the operation of the pulsator, which connects to a flow bench washing directly in the path or a parallel path. When the pulsator occurs flow with pulsatile flow and pressure washing environment.
The changed direction of flow of the scrubbing medium is created using a system of switches that are installed directly in the path of flow of the wash stand, for changing the direction of flow must be turned off, the drive of the stand to avoid water hammer.
Known hydropulse along.with. No. 520460, providing a pulsating flow of the scrubbing medium (fluid)containing a cylindrical housing with radial inlet and outlet Windows for work and communicates with them the distribution box, the implementation of the tion on the outer cylindrical surface of the spool, rotating inside the housing. Distribution box spool is made of profiled in accordance with the form specified pulse cleaning of the environment and housing in the zone of discharge of the working window is placed a device for changing the shape of this working window, made for example in the form of a set of profiled plates, fixed in the regulations define required for a given pulse shape of the window.
The disadvantages of this pulsator are:
- washing medium when the pulsator is moving in only one direction, so it is possible the accumulation of stagnant zones of dirt in the wash cavity, and as a result, additional time is needed for leaching;
- given the shape of the pressure pulse cleaning of the environment is determined by the profile of the distribution box in the rotating spool and a set of core plates in the zone of discharge of the working window of the housing, so the pulsator does not have the regulatory capacity of the pressure pulse in a wide range without stopping the process of leaching cavities.
A device that changes the direction of flow of washing liquid to wash the product and wash stand with a valve system connected to the hydraulic bridge (J. "Shipbuilding". No. 6. 2011 (November-December), S. 56).
The disadvantage of this device are:
- when washing the strips is she using this device does not occur pulse pressure variation washing environment, that slows the separation of particles from the washed surfaces;
- before switching the direction of motion of the scrubbing liquid to eliminate the phenomenon of water hammer, you must stop the washing process.
The closest in technical essence and the achieved result is a pulsator in A. S. No. 335015 adopted for the prototype.
The pulsator includes a housing, comprising sequentially arranged, communicating the high pressure chamber and the chamber pulsations passing through the camera shaft, mounted on the shaft in the high pressure chamber, a rotating disc with Windows and placed between the rotating disk and the camera pulsations stationary disk with Windows, identical to the Windows of the rotating disc and located at the same distance from the axis of the shaft, and that the Windows of the rotating disc. Open each of the disks have different sizes and are located on the fixed disk radius, in order to increase or decrease their size, and on a rotating disk in a spiral, in order so that when the disk rotates, the combination of its Windows with Windows of the same size fixed disk.
However, the prototype has the following disadvantages:
- when the pulsator washing medium moves in only one direction, so it is possible the accumulation of stagnant zones of dirt in the wash cavities, so you need extra is time for washing;
- given the shape of the pressure pulse cleaning of the environment is determined by the number and diameters of the holes in the Windows, which are located on the rotating and stationary disks, so the pulsator does not have the regulatory capacity of the pressure pulse in a wide range without stopping the process of washing and replacement of rotating and stationary discs with a different number and diameter of holes.
The task of the invention is to develop a high-performance, reliable and relatively inexpensive pulsator with adjustable periodic pulse pressure wash water in a wide range while changing the flow direction for one revolution of the drive shaft of the pulsator only in the cavity wash products, without changing the direction of flow flow of the flushing stand.
The main technical result, which provides a task, is to improve the washing efficiency of the products due to:
- combining the two methods of washing products - generate periodic pressure pulses and changing the direction of flow of the scrubbing medium;
control pulse pressure drilling fluid in a wide range without stopping the drive flow of the wash stand.
Getting the technical rez is ltate provided by the pulsator is made in the form of housing with sealed chamber pulsations, which coaxially them mounted rotating engine shaft with rigidly mounted disks. In addition, the casing is made of 4-connected and symmetrically located on mutually perpendicular axes vertically mounted cylindrical chambers pulsations, United in pairs by two parallel top tubes and perpendicular to them, two parallel bottom nozzles. The disks are set at an angle to the shafts so that their upper edge is located below the upper nozzle and the lower edge above the lower pipe, and a gap between the inner wall of the chamber and the outer edge of the disc should be no more than 2 mm, and the disks rotate synchronously and in the same direction with a speed of not more than 1 rpm, in addition, the diagonals of the housing from the outer side of each camera is set to half the height of the outer pipe.
In the particular case of the pulsator at the ends of the outer pipes installed flanges.
In another particular case, the shaft with disks rotate from a common drive, for example, a gear motor through a system of gears.
In the third special case profiles disks cameras pulsations made in the form of z-shaped.
The invention is illustrated in the following graphic figures:
F the year 1 General view of the pulsator.
Fig.2 Section A-A cross section of the pulsator through the upper nozzles.
Fig.3 Section B-B (rotated 90°), a longitudinal section of the camera ripple.
Fig.4 diagram of the operation of the pulsator and its connection to the wash stand and wash the product. The maximum flow of washing liquid to wash the product in the direction of A.
Fig.5 diagram of the operation of the pulsator and its connection to the wash stand and wash the product. The flow of washing liquid to wash the product is not present.
The pulsator consists of the following elements.
The pulsator is made in the form of the body (Fig.1), which consists of four chambers pulsations 1. Each chamber pulsations has a rotating shaft 2 with the disk 3, one of the top 5 and one lower opening 7, through which the camera pairs are connected to each other, the upper 4 and lower 6 nozzles for internal hydraulic connections the four chambers of the pulsations. For external hydraulic connection between the outer pipe 8 is equipped with flanges 9 and through the flange connection 10 is connected to a wash product 11 and wash stand 12 (Fig.4, 5).
Luggage ripple 1 made in the form of shells and two caps - the top 13 and bottom 14. In the top cover 13 and the bottom cover 14 has bearing assemblies and seals designed to rotate them in the shafts 2, as well as for sealing gaps of the surface the values of rotation in bearing assemblies.
In the middle part of the rotating shaft 2 at an angle thereto fixed disk 3, and the top and bottom edges of each disk can be bent and have a side profile of a z-shaped. The gap between the inner wall of the shell of each chamber pulsations 1 and the outer edge of the rotating disk 3 must be at least 2 mm
The pulsator is equipped with the necessary automation system, switching software and instrumentation (instrumentation), all of the controls displayed on the remote control (not shown).
The pulsator operates as follows.
Before you begin the pulsator is connected to the wash stand 12, consisting of a pump, a feeder tank and the washing chamber, and to wash the product 11 according to the scheme depicted in Fig.4, 5. Four of the outer pipe 8 via the flange connection 10 is connected to wash the product 11, and wash stand 12 according to the following scheme: pulsator washing stand 12, the pulsator - wash product 11; pulsator washing stand 12; pulsator - wash product 11. Then fill the wash water to the entire system, consisting of a pulsator, the washing stand and wash products.
After that, the operator using system automation (SA) control the operation of the pulsator includes one of the programmed modes washing. Cleaning mode is opredelennosti consecutive starts, stops, and change speed gear motor, which leads to changes in pressure and direction of flow of flush water to wash the product 11 intervals of time. The maximum speed of revolutions of the shaft with the disks obtained by calculation, should not be more than 1 rpm to avoid the possibility of water hammer.
Geared motor driven CA, rotates drive shaft with pinion. From the drive shaft through gearing, the rotation is transmitted simultaneously to the four driven gears mounted on the shafts 2, which leads to the rotation of all four rotating disks 3 with the same speed. Revolving inside each cell pulsations 1, disk 3 (Fig.4) suitable to the passage bore of the outer pipe 8 turn the top, lower shelf, thus there is a hydraulic connection of the outer pipe 8 with the lower pipe 6, with the upper pipe 4 each camera ripple 1 and the corresponding change in flow (Fig.4, 5). Synchronous rotation of the disk 3 in all four chambers of the pulsations 1 leads to programmed to reverse the flow of water to wash the product 11.
Flow scheme of wash water under the various provisions of the disk 3 is set forth in Fig.4, 5. This flow chart shows the maximum flow of flush water and the flow direction in pan isdel and 1 in direction A, while turning the rotating disk 3 by 180° in the cells ripple 1 (Fig.4 relative to Fig.5) is the maximum water flow in opposite to A direction.
When the rotation of the disk 3 is continuously changing flow cross section of flow of flush water in the pipes 4, 6, 8 and, therefore, there is a continuous change of pressure, and every 0.5 turnover disk 9 is the change in the direction of flow of flush water to wash the product 11, the nozzles 4, 6, 8 and cameras ripple 1 (Fig.4, 5).
When rotating disks simultaneously and periodic overlapping stream of washing liquid flowing from the wash stand and wash products, at the top or bottom openings of each chamber pulsations, thus changing the direction of flow of washing liquid only in the leached product.
The gap between the inner wall of each chamber pulsations and the outer edge of the rotating disk must be at least 2 mm, so that when the direction of flow of washing liquid has been part of the surge and thus lacked the conditions for the destruction of the leached product.
The drive rotating shaft 2 can be used a motor-reducer consisting of induction motor, assembled together with the bevel gear. The motor of which are equipped with sensor speed and equipped with frequency Converter for speed control. Management of a gear motor is controlled through a control system according to a specially developed program. Geared motor through a drive shaft with pinion and gearing connected with the driven gears cameras pulsations 1, simultaneously rotating the shafts 2 of all four chambers of the pulsations 1.
The present invention provides reliable, relatively inexpensive pulsator with the ability to connect to systems once-through wash stand and wash products, providing significant reduction of time washing and power savings by controlling the pulse wash water in a wide range without stopping the drive flow of the wash stand, and combining the two methods of washing products - generate periodic pressure pulses and changes the flow direction of the wash water.
1. Pulsator, comprising a housing with a sealed chamber pulsations, which coaxially them mounted rotating engine shaft with rigidly mounted disks, characterized in that the casing is made of 4-connected and symmetrically located on mutually perpendicular axes vertically mounted cylindrical chambers pulsations, United in pairs by two parallel top tubes and perpendicular the im - two parallel bottom nozzles, disks are set at an angle to the shafts in their middle part so that their upper edge is located below the upper nozzle and the lower edge above the lower pipe, and a gap between the inner wall of the chamber and the outer edge of the disc should be no more than 2 mm, while the disks are rotating synchronously and in the same direction with a speed of not more than 1 rpm, in addition, the diagonals of the housing from the outer side of each camera is set to half the height of the outer pipe.
2. The pulsator under item 1, characterized in that at the ends of the outer pipes installed flanges.
3. The pulsator under item 1, characterized in that the shaft with disks rotate from a common drive, for example, a gear motor through a system of gears.
4. The pulsator under item 1, characterized in that the profile disks made in the form of z-shaped.
FIELD: power industry.
SUBSTANCE: method of fluid flow vibration generation involves preliminary separation of fluid in main supply pipeline (11) to two flows outside of whirlpool chamber (1), inside which the flows are whirled by channels with different flow rates in opposite directions and separated by partition (4) with through channel (5). The flow is whirled by swirl channels (2) at large flow rate. Flow with smaller flow rate is whirled by swirl channels (3) of opposite orientation and linked through channel (9) with chamber of adjustable elasticity (8) closed by tight elastic shell (10) and installed in pipe (7) lengthwise. Due to elastic interaction, fluid in channel (9) obtains an impulse directed to whirlpool chamber (1), so that whirled flows are decelerated abruptly, and flow through output nozzle (6) rises significantly.
EFFECT: enhanced efficiency of constant fluid flow conversion to pulse flow due to reduced hydraulic loss and hydraulic energy consumed.
24 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: liquid from a discharge manifold (5) is divided into two flows - main and additional ones. The value of flow rate in the main flow is maintained as more or equal to the value of the flow rate of the additional flow. The main flow is swirled with the help of swirling channels (3) in a flow chamber (2) with an outlet nozzle (4). A part of the main flow is released via a nozzle (4), and the other part is sent to an axial channel (8) made in the central body (7). The outlet (10) of the channel (8) is closed with an elastic partition (11). From the discharge manifold (5) via a distribution channel (13) the liquid is sent into an additional manifold (12). The manifold (12) is connected with a nozzle (4) via a gap (6) and with a channel (8) via a partition (11), with the help of which they provide for separation and elastic interaction of flows from the manifold (12) and the channel (8). As a result of which in the additional flow at first pressure growth is delayed, and then additional pulse action is provided due to forces of elasticity, with the help of which the main swirled flow in the chamber (2) is damaged, and short-term, pulse increase of liquid flow via the nozzle (4) is ensured.
EFFECT: invention makes it possible to expand functional and operational capabilities of an oscillation generator.
11 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: electrohydraulic vibrator includes a back-and-forth pump, suction and discharge hydraulic lines with valves of direct and return action, which are installed in them, a power hydraulic cylinder and an electromechanical converter. Electromechanical converter includes an electric motor, a multiplier, at the outlet shaft of which an eccentric cam mechanism is fixed, which contacts a plate-type pusher pressed with a return spring installed on a pump stock.
EFFECT: improving positioning accuracy at static and dynamic loads and maintaining linear dependence of amplitude of vibrations on the frequency specified with the electric motor; improving reliability and durability of electrohydraulic vibrator.
2 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: invention refers to automation devices of production process in various industries, and namely to distributing elements of hydraulic impact devices (HID) for control of working fluid flow between sections and units of the hydraulic system. HID distributor includes a housing with a control channel and channels for supply and discharge of working fluid, a control chamber and a shutoff control member. In the housing there is a calibrated throttle, through which restricted amount of working fluid has access from the control channel to the control chamber. HID distributor is equipped with a stepped valve for control of supply of working fluid to the control chamber, which is spring-loaded and interconnected through a throttle via a step of smaller diameter to the working fluid supply channel. In its initial position, the larger step of that valve closes the access of the working fluid to the control chamber.
EFFECT: improving operating reliability owing to damping the action on the shutoff control member in initial position of pressure pulse of hydraulic impact wave generated at supply to the distributor through the control channel of working fluid flow from a discharge line of HID at impact.
FIELD: oil and gas production.
SUBSTANCE: proposed method consists in intermittent feed of displacement fluid via two working ducts in common outlet manifold furnished with hydraulic cylinder with two pistons coupled by rod. Two openings are made in hydraulic cylinder wall to communicate with appropriate working duct. One piston is fitted inside hydraulic cylinder between said openings while another piston is arranged in outlet manifold. Compression and expansion waves are created in said outlet manifold by reciprocation of said pistons. Distribution of fluid flows between two working ducts is effected by feeding flat jet onto flat wedge arranged at definite distance from slot nozzle facing the flow. This invention differs from known designs in that pressure difference between working ducts is used to generate pressure pulses in outlet manifold.
EFFECT: optimised conversion of pressure difference in working ducts in that in outlet manifold.
3 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: drive comprises a double-acting piston-cylinder, the main control quadrilinear hydraulic distributor with hydraulic control, two control three-directional hydraulic distributors and additional start-up four-way two-position hydraulic distributor with hydraulic control. The spool of the hydraulic distributor is spring-loaded on the part of one of its ends by a spring with adjustable preload force. The output channel and spring chamber of the start-up control of the hydraulic distributor are connected to the drain hydraulic lines of the drive, the input channel and the hydraulic distributor control chamber, opposite to the spring chamber are connected to pressure hydraulic lines of the hydraulic power source, and each of the two executive channels is connected to a respective chamber of the working cylinder. In the initial position of the spool of the start-up hydraulic distributor all its channels are closed, and in the working position of the spool one of the executive control channels of the hydraulic distributor is connected to its input channel, and another executive channel is connected to the output channel of the hydraulic distributor.
EFFECT: increased reliability of starting operation of self-oscillatory hydraulic drive.
2 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: device for creation of pulse mode of loading actuating elements of process machines consists of case 1, of piston 2 with rod 3 and of generator of vibrations connected with cover 5. The generator of vibrations is installed in cartridge 8 coaxial to piston 2 and rod 3. The generator of vibrations is connected to membrane 9 rigidly set between cartridge 8 and cover 5.
EFFECT: expanded frequency and power range of dynamic loads, facilitation of operability at excess pressure and in vacuum at operation in reactors, pressure chambers and other vessels under pressure, elimination of dissipation of vibration energy created with generator of vibrations.
2 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: pulsator consists of high-pressure nozzle of working medium, of medium evacuating nozzle, of mixing chamber and diffuser, and of cone located inside mixing chamber and diffuser and connected with bellows unit. The bellows unit together with the mixing chamber forms a confuser section, while it forms a diffuser section with the diffuser. Also, the bellows unit is installed inside a movable cone. The bellows unit can be communicated with an outlet of a jet mechanism.
EFFECT: increased efficiency of operation and simplified structure of jet mechanism.
2 cl, 4 dwg
FIELD: instrument making.
SUBSTANCE: fluid flow is fed to pump intake at constant pressure. Pump drive element, for example membrane is vibrated at preset frequency and pressure amplitude modulated by pulsation of preset frequency, amplitude and shape. Pulsating fluid flow is forced to pump outlet. Said flow features high-frequency component of pressure frequency component and low-frequency component of pulsations, Fluid flow is, then, fed into acoustic filter. Note here that pressure frequency is filtered by acoustic filter to produce low-frequency component of fluid flow pulsations at the filter outlet.
EFFECT: possibility of programmed variation of fluid flow pressure, frequency, depth and shape of pulsations.
SUBSTANCE: invention relates to devices for generation of vibrations in flowing medium stream and can be used in chemical, mining and other branches of industry in processing of single-phase or multi-phase media in order to mix them and disperse phases. Hydrodynamic generator for processing of flowing media includes case, jet-forming nozzle and cantileverly fixed in case opposite to medium direction plate-resonator. Case is made in form of tube. Plate-resonator has two protrusions, arc-like bent to opposite sides in such way that they tightly adjoin internal tube surface forming plate fastener.
EFFECT: increased efficiency of medium mixing and phase dispersion in multi-phase stream.
3 cl, 7 dwg
FIELD: hydraulic machine building.
SUBSTANCE: proposed distributor has housing with control channel and working liquid inlet and outlet channels, shutoff-control element with shank from side of control channel installed in housing for tightening in initial position and longitudinal displacement for changing direction of working liquid flow. Inner space of housing is divided by partition with hole into hydraulic and pneumatic chambers, the latter being filled with compressed gas at pressure Pg, and shutoff-control element is provided additionally with shank from side of pneumatic chamber passing into chamber through hole in partition and provided with head on end face. Said head is pressed to surface of partition by pressure Pg of compressed gas when shutoff-control element is in initial position.
EFFECT: improved reliability.
3 cl, 2 dwg
FIELD: fluid-pressure actuators.
SUBSTANCE: generator of air pulses comprises housing with the outlet port which receives branch pipe, output branch pipe, and valve with the rod. The valve is mounted in the housing space for permitting overlapping the outlet port. The drive of the valve comprises diaphragm connected with the rod and mounted in the housing space to define air chamber which is in communication with the outlet branch pipe. The generator also has receiver connected with the air chamber. The housing of the generator is mounted in the space of the receiver which is in communication with the outlet branch pipe and air chamber. The total area of the ports that communicate the air chamber with the receiver is greater than that of the outlet port. The valve actuator has electromagnet and armature connected with the rod.
EFFECT: reduced weight and sizes.
1 cl, 1 dwg
FIELD: mechanical engineering.
SUBSTANCE: generator of impact flow comprises valve made of flexible spacer provided with the rigid disks from above and from below. The bottom disk is made of the outer and inner flat rings arranged in the same plane to define the space between rings. The inner ring is provided with conical guiding member. The top disk is provided with openings and cylindrical shell having longitudinal slots. The inlet of the nozzle is made of a head and mounted inside the housing above the top level of the branch pipes. The safety valve of the generator is used as the piston and self-adjusting valve of the nozzle.
EFFECT: enhanced reliability.
FIELD: heat engineering.
SUBSTANCE: invention is designed to prevent formation of salt deposits on working heating surfaces of different heat exchange devices. Proposed vibration exciter, mainly for metal structures of heat exchangers, has air duct in form of vertical cylinder with branch pipe to fed compressed air with holes to let out compressed air, wave guide rigidly connected with object to be excited and engaging with striker member arranged in air duct, and air discharge valve. Air duct is made of diamagnetic material and is provided with winding from outer side connected to pulse current source. Valve has contact to switch on pulse current source when striker member is in upper position.
EFFECT: reduced overall dimensions of device, enlarged operating capabilities.
FIELD: technological processes where directed shock waves of high and super-high pressures are used.
SUBSTANCE: proposed method includes coaxial positioning of electrodes having supply and outlet channels, connecting them by electric contact provided with bursting element in form of flat foil ring which is located on dielectric body plane in form of plate. This plate has hole where electrode with supply channel is fitted; supply channel is connected with central part of ring; periphery part is connected with end face of electrode having output channel. Second electrode has coaxial non-closed cavity whose curvilinear surface is made in form of truncated body of revolution of function similar to "LOCON ANIJESY" function and outlet channel is made in form of Laval nozzle. Flow of gas flowing in succession through supply channel of electrode, cavity bounded by plane of mechanically strong dielectric plate and inner surface of electrode provided with outlet channel and outlet channel proper is formed by means of external source. Plate and electrode are rigidly and mechanically interconnected. Thus, electric burst of ring takes place forming high-pressure shock wave.
EFFECT: enhanced efficiency.
FIELD: drive units of vibration, vibration-percussion equipment, drive units for reciprocation motion.
SUBSTANCE: vibration exciter includes housing in which striker is mounted with possibility of working motion by action of forward member stroke acting at constant effort; reverse stroke chamber. The last after feeding into it working fluid from its source generates efforts exceeding effort of forward stroke member. At the end of reverse stroke said chamber communicates with atmosphere through pressure-reduction openings and it is connected with working fluid source and with atmosphere by means of ducts. In housing of vibration exciter there is reversing valve used for alternatively closing one of said ducts and for opening other duct. In variants forward stroke member may be in the form of forward stroke chamber communicated with working fluid source or in the form of spring. Pressure reduction openings may be formed in lateral surface of housing or striker.
EFFECT: enhanced operational reliability of exciter.
5 cl, 2 dwg
FIELD: mechanical engineering.
SUBSTANCE: method comprises swirling fluid under pressure and generating at least two oppositely rotating vortices. The swirled fluid flows are separated by the nozzle of the centrifugal nozzle. One of the flows is directed to the space with controlled flexibility, and the other one is connected with the outlet nozzle. The hydrodynamic generator has housing with vortex chamber, swirling passages, outlet nozzle, pressure pipeline connected with swirling passages, and central body mounted in the vortex chamber with a spaced relation to the side and space of controlled flexibility. The space is connected with the intermediate nozzle of the centrifugal nozzle provided with swirling passages of opposite directions through the passages of the outlet nozzle and connected with the space of controlled flexibility.
EFFECT: expanded functional capabilities.
4 cl, 4 dwg
FIELD: chemical, metallurgy, mining and other industries.
SUBSTANCE: invention relates to devices for pneumopulse breaking of material and cleaning surfaces of apparatuses from deposits. Proposed pneumopulse system contains row of containers connected in succession and furnished with exhaust nozzles, elastic diaphragms, prechamber and working space. First container is connected with union to deliver compressed air. System in furnished with elastic diaphragms with valves dividing each container into prechamber and working space. Each container is provided with intake chamber divided by elastic diaphragm into intake space and adapter chamber communicating with prechamber through hole in its central part, and by means of holes on side surface, with atmosphere. Working space of each preceding container communicates through pipeline with valve with intake space of each following container, intake space of first container communicates through control valve with atmosphere and intake chamber, working space and prechambers of all containers are connected by throttling unions with compressed air delivery pipeline.
EFFECT: improved efficiency of material bridge breaking and cleaning of surfaces of apparatuses from deposits.
FIELD: automatic control pneumatic systems.
SUBSTANCE: proposed generator contains jet flip-flop with separate inputs in each feedback channel of which interrestrictor chamber is installed. Jet analog element with adjusting restrictor and jet discrete element are installed in each feedback channel, one of inputs of each analog element being connected with output of corresponding interrestrictor chamber, second input of each jet analog element being connected with output of corresponding adjusting restrictor. Output of each jet analog element pressure on which rises at increase of pressure at input connected to output of interrestrictor chamber is connected with change-over input of corresponding jet discrete element. Second output of each jet analog element is connected with inhibit input of corresponding jet discrete element, and direct output of each discrete element is connected with corresponding input channel of flip-flop with separate inputs.
EFFECT: improved accuracy and stability in operation, facilitated adjusting.
FIELD: hydraulic systems.
SUBSTANCE: invention relates to distributing elements of hydraulic impact devices used to control working liquid flow between sections and sets of hydraulic system. Proposed distributor of hydraulic impact devices has housing with control channel and working liquid inlet and outlet channels, control chamber from side of control channel, shutoff-and-control element with stepped shank from side of control channel and installed in housing for pressing up in initial position and longitudinal displacement for changing direction of working liquid flow. With shutoff-and-control element on initial position, larger diameter step of said shank cuts off working liquid flow delivered through control channel to smaller diameter step. Said element is either furnished with accumulator connected by channel in housing with control chamber provided that before opening of access for working liquid flow delivered to control channel to smaller diameter shank, access of working liquid from said step is provided through channel in shank to channel in housing to remove liquid; or calibrated restrictor is made in housing through which limited amount of working liquid can pass from control channel into control chamber provided that with shutoff-and-control element in initial position, control channel is closed by said element and, before its opening, access of working liquid from smaller diameter step of shank through channel in shank to channel in housing is provided for its removal; or shutoff-and-control element is provided with shank from side of control channel and calibrated restrictors are made in housing and in shank of shutoff-and-control element provided that limited amount of working liquid can pass through calibrated restrictor in housing from control channel into control chamber and with shutoff-and-control element in initial position, control channel is closed by said element and as long as it remains closed, limited amount of working liquid from control chamber to channel in housing can pass for removal through calibrated restrictor in shank.
EFFECT: improved reliability.
4 cl, 3 dwg