The device for generating motion in a liquid, in particular on its surface
(57) Abstract:This invention relates to a device intended to create motion in a liquid, in particular on its surface, and the liquid contained in the reservoir, limited to one or more walls, in particular in the pool. The device contains an element of contact with the liquid on the surface which must be created by the movement. The device includes a floating or submerged unit is not mounted on the wall of a reservoir containing two bodies of 1.5 interconnected through means 7 designed to move the bodies of 1.5 relative to each other in such a way as to create motion in the liquid, in particular on its surface. 12 C.p. f-crystals, 11 ill. The present invention relates to a device intended for the propulsion of the fluid, in particular on its surface, the liquid contained in the reservoir, limited to one or more walls, in particular in the pool. This device contains an element of contact with the liquid, in which, especially on the surface which must be created movement.The device includes a floating or submerged and the STV, intended to effect the movement of one body relative to another in such a way as to create motion in the liquid, in particular on its surface.Another object of the invention is the creation of a unit radiating a signal at the moment when the body, especially the floating body must be immersed in the liquid in which or on which surface should be created movement, so that the delay between the time at which the wave or the motion are precisely defined state, and the time of immersion corresponds to the specified value. This unit contains mainly the acceleration sensor associated with the microprocessor.From the document EP-A-0-236 653 known system for generating artificial swell in the water. This system contains a plunger connected to one of the walls of the reservoir, on the shaft of the piston is set to the buoy. The pusher impose alternating movement in a horizontal surface buoy.To use such a device pool, you should spend considerable preparatory work along one of its walls.On the other hand, the use of such systems for the pool would have a minor effetligne opportunities among them:
- buoy when returning wave acts in a direction to it in such a way that the movement of the buoy opposite return movement of the waves, i.e. the energy of the buoy is used to prevent return movement of the waves,
- buoy operates in the hollows of the waves, while transmitted from the buoy fluid power to ensure the movement is small, as the buoy moves all the time in the same horizontal plane.Finally, as the buoy remains in the same horizontal plane, the buoy acts as a barrier or energy absorber reflected wave.It is also known a device for use in the pool, formed by a vertical panel that is associated with the wall of the basin, on the one hand, by means of the swivel connection and, on the other hand, when the push bar. This known device allows you to create waves on the surface of the pool, but its installation requires considerable preparatory work. In addition, the transmitted fluid energy will depend on the level of contact with the panel waves. This device absorbs considerable energy to create waves.Finally, from the document US-A-34a which has a motor-reducer, the shaft which carries the crank. The lever connects this crank with pin installed on the casing in the upper part of the buoy. Weight at least partially retained by the springs.The buoy or the hood of this machine is attached to the two floating bodies with flexible tools that avoids significant movements of the buoy on the surface of the liquid, allowing it to simultaneously oscillate in a vertical plane.This machine cannot be used effectively to create waves, as it is not equipped with a system of controlling the movement of the buoy relative to the weight. Indeed, as an example, if the position of the weight relative to the buoy is not shifted in phase ahead of the 90o, the composed machine movement is random and may, for example, to create waves and protivorvotny.A device for generating waves in a liquid containing floating body is driven using a drive controlled by the control unit, in particular using the signal from the sensor estimates the amplitude of the wave (EP Al N 0164811, CL G 01 M, 10/00, 1985).However, this device does not provide the necessary synchronization of the drive and the generated waves.The present invention Pretoria consumes little energy to create waves, for example, in the pool, due to the fact that the invention allows better use of energy to create motion on the surface of the pool.In fact, in the case of swimming pools, the device is not United with the wall of the pool and not a static obstacle for the generated movements. However, it can become a dynamic obstacle in the private form of the invention in which movement of the moving bodies of the device is automatically controlled in the front quadrature relative to the motion of waves. Finally, the device operation can be automatically controlled in order to obtain maximum efficiency. Thus, if you want to get the maximum movement amplitude, produce automatic control device in accordance with the invention, the quadrature relative movement generated waves.The device is designed to create motion in a liquid, in particular on its surface. The liquid contained in the reservoir, limited to one or more walls, in particular in the pool. It contains an element of contact with the liquid in which or on which surface should be created movement. This element is what is waiting for them at least with the help of funds, designed for moving bodies relative to each other in such a way as to create movement in a fluid, in particular on its surface.Under the unit, not connected with the wall of the reservoir, can understand the two bodies connected by one means and forming a floating unit or submerged unit, free from any movement in the liquid or on the surface, but also the Assembly formed by the two bodies connected to each other by means of one tool, which is floating or submerged, the movement of which is in the liquid or on the surface is limited, therefore, to provide a certain positioning of the body, which is floating or submerged in the liquid or located on the surface of the liquid (setting corresponding to the invention of a device for anchoring, for example, using the rope to ensure the location (positioning) device in a certain volume of fluid, or a specific area on the surface of the specified liquid).Mainly the first body is a casing in which is housed a second body.The device also contains a tool that is designed to compensate for at least Castignani between the base of the first body and the second side of the body. Preferably such means is a spring, one end of which rests on the Foundation of the first body, while one of the parties of the second body parallel to the given base, reaches the second end of the spring.The device includes a control system for moving bodies relative to each other. Such a system may include at least one sensor from a family of sensors designed to assess the amplitude of the waves, such as a sensor echo depth sensors, designed to assess the movement of the bodies relative to each other, the sensors that are designed to assess the immersion of the first body, the measure of the acceleration, etc.In one of the embodiments of the invention, the first body is a tank, the bottom of which is connected with the second body by means of the follower and the rod moving the latter causes the movement of the bodies relative to each other.In another embodiment of the invention the device comprises means formed by a gear motor mounted on the first body, which causes the rotation of the shaft carrying the crank and the connecting rod is located between the said crank and the second body. In this form of the invention, m is RIT control system, with the block of automatic control of the movement of the bodies relative to each other and a device for automatic regulation of phase movement of the bodies relative to each other and relative phase of motion generated in the liquid or on the surface.In the case of devices containing means, formed by a motor-reducer, resulting in a rotation of the shaft carrying the crank associated with the connecting rod, one end of which is connected to one of the bodies, motor-reductor provided with a first sensor generating a frequency proportional to the speed of the drive motor gear and the second sensor - sensor synchronization, emitting a signal when the crank mechanism in its extreme position. Units for automatic speed control and phase associated with the sensor, generating a frequency proportional to motor speed-reducer, and the second synchronization sensor, emitting a signal upon reaching a crank mechanism for end position, and an acceleration sensor.The speed sensor gear motor or, more precisely, the motor driving the gear, and synchronization sensor may be a photoelectric cell, containing between emitter and receiver is Chora. The specified disk has one or more grooves or perforations, allowing the receiver to receive the signal radiated by the transmitter.In a preferred embodiment of the invention the control system includes a microprocessor for receiving cable signals of the speed sensors of the gear motor, sensor synchronization and acceleration sensor and generating a control signal by the power gear motor with variable speed.The microprocessor controls the power to the gear motor so as to regulate its speed. In one form of the invention, the specified microprocessor contains:
a memory element for the value of the reference speed gear motor for each turn,
a memory element for the desired period of the motor-reducer (inverse of frequency of rotation of the motor-reducer),
- the unit of measure of the average period of the motor-reducer for a few revolutions
unit determining the deviation between the average period and the desired period,
- unit change memory reference motor speed-reducer in function of the measured deviations thus, to permit regulation of the motor speed-reducer.
unit of measure deletion between the specified time and date of passage at state system crank-connecting rod,
if necessary, the processing element deletions to determine the average over several periods of removal,
system comparison of these deletions or medium removal with optimal removal, the emitting signal power of the motor - reducer thus, to adjust the existing difference between the removal or medium removal and optimal removal, that is, the moment you pass the extreme condition of the crank mechanism relative to the moment when the wave on the surface or fluid movement in the fluid passes the specified predetermined condition (for example, in the case of swimming pools, zero state, i.e. the state in which the wave reaches the average level of the liquid).
the processing unit signals from the acceleration sensor, which is determined by the average value over a certain period of time and the maximum and minimum values of the signals and using these values is determined by the moment when the wave on the surface of the liquid or movement in it are pre-defined condition,
- the unit that allows you to display these values of the resonant periods of the waves or movements contained in the pool of liquid
system radiation signal for immersion of the body in order to obtain the wave or the motion with the period close to the period of resonance.Other features and details of the invention will be seen from the following detailed description, which made reference to the attached drawings.In Fig. 1 - V devices is depicted in Fig. 3.In Fig. 6 shows another form of the device corresponding to the invention, equipped with an electronic device.In Fig. 7 shows the final view of the implementation of the device corresponding to the invention.In Fig. 8 shows schematically the control system of moving bodies relative to each other.In Fig. 9 and 10 show the relative position of the bodies relative to each other over time, as well as the level N, which is corresponding to the invention the device. In Fig. 9 position of the bodies relative to each other, are in quadrature (deuteromony a quarter-period) forward relative to the level N, which is a device that allows you to get the wave maximum value, while in Fig. 10 the position of the bodies relative to each other is provided in a position squaring ahead of the level N, which is the device.In Fig. 11 shows a schematic view of the unit transmitting the signal at the moment when the body, in particular a floating body must endure immersion in the liquid in which or on which surface should be created movement.In Fig. 1 shows the device accepts the reservoir, limited machines. This device contains an element of contact with the liquid in which or on which surface should be created movement. In the form shown in Fig. 1 cross section of the element in contact with liquid, such as on the surface which must be created movement, is floating unit 1 that has no connection with the wall of the reservoir. This unit contains:
- the first body 1 made in the form of a casing or tank 2 in the form of a truncated cone having a bottom 3 and a floating roller 4,
the second body 5, associated with the first body 1 by using the 7 intended for realization of the movement of the second body in the casing 2 relative to the base 3. Displacement (X) of the bodies relative to each other creates motion in the liquid, in particular on the surface 8 of the liquid contained in the pool.The device also includes a spring 9, intended to compensate, at least partially, the effect of gravity of the second body 5 on the first body 1. These springs are backed by one of their ends to the base 3 of the first body, while the side 10 of the second body rests at the other end of the spring 9. This side of 10 parallel to the base 3 of the first body.The second body has two cameras 11, 1 is I the increased weight of the second body. To increase the weight of the second body can be used lead bars, etc.However, the use of moss soaked in water, allows for the removal of water to reduce the overall weight of the device, when the latter should be removed from the pool.Moss avoids excessive movement contained in the chamber 11 of the water.The second or lower chamber 12 includes a control system 14 by movement of the rod 13 of the pusher, which acts as a means 7 designed for moving one body relative to another.Control system 14 includes a control unit 15 of the pump 16, is installed on the pipe 17 connecting part 19 of the pusher 7, below its piston, with the tank 20. Part 21 of the pusher located above the piston 18, is connected with the reservoir 20 by line 22.The control unit 15 of the pump 16 operates to vibrate the motor 28. This device 15 controls the energy supplied to the pump motor, battery 23, is placed in the second chamber 12.In the case when the control system 15 operates with gas, or when the tank 20 is equipped with an elastic membrane is formed of a simple system is go with the tank, exceeding three times the amount of the pusher. The gas may be compressed air. Tank and the gas pressure are selected to obtain approximately linear effect compensation.The system can be used to move the bodies relative to each other and to contain a manufacturing unit of gas or gas tank or compressed air, this gas or compressed working fluid is designed to actuate the pusher. As an example, block the production of compressed gas can serve as a unit, in which chemical and/or physical reaction, such a unit can be, for example, the internal combustion engine, or the chamber in which the calcium carbide mixed with water.Various sensors associated with the control unit 15, so that the latter took into account the position of the bodies relative to each other, as well as immersion or acceleration.The device is also equipped with an accelerometer (accelerometers) sensor 24 or 25, designed to assess the amplitude of the waves, such as sensor echo depth sensor 26, designed to assess the immersion of the first body, and a sensor 27, designed to measure the movement of one body relative to drino another with the movement of the waves.The second body 5 is mostly a weight that is at least 5 times the weight of the first body.Put the device shown in Fig. 1, in the pool. The first body was cylindrical tank with a height of 70 cm and a diameter of 78 see This tank was equipped with an inflatable cushion with a diameter of 25 cm, is fixed at half the height of the tank. The weight of this first body was 35 kgThe second body had a weight of 170 kg and moved relative to the first body by means of the drive power of 400 watts. The springs were used for compensation of gravity of the second body on the first.Maximum movement of the bodies relative to each other was about 10.2 seeRegulate the speed of movement of the bodies relative to each other so that they were away from each other at least more than 30 times per minute so that the rate of disposal of the bodies relative to each other was close to the resonant frequency of the waves (about 0.5%).It was noted that at the location corresponding to the invention of the device in the pool (50 m2and bringing it into action, you may receive after 3 to 5 min waves having a height of more or less 80 see Also noticed that the proposed device during these ispy is CLASS="ptx2">If the device is immersed in the liquid of the device, it should be placed in the most suitable place to create maximum excitement in the liquid.The device shown in Fig. 1, contains mainly the control system associated with the sensor echo depth. This system allows you to synchronize the motion of bodies relative to each other in function of the position of the device relative to the waves.The device can also be used to create controls, i.e. to create, for example, movement on the water surface, opposing waves generated by artificial or natural way.The device can also be used in liquid multiphase systems, such as systems containing non-miscible liquids of different density. In this case, corresponding to the invention the device is mainly partially floating relative to the fluid of the highest density.In Fig. 2 depicts another embodiment of the invention.Tool 7, designed to move the first body 1 relative to the housing 5, is formed by a gear motor 30, resulting in wire 34, fixed to the upper flange 33 of the housing 1.During the time Y1the geared motor 30 is left on and the rope (belt) 32 wound on the shaft 31, which leads to the mutual movement of bodies 1 and 5.After a time-Y1interrupt the current supplied to the gear motor 30, under the influence of gravity, a second body is lowered and the belt or wire 32 is rapidly unwound.When unwinding the cable or belt shaft 31 is driven by the arrow Z. the Rotation of this shaft allows the motor driving the gear to work as a Dynamo, which allows by measuring voltage to control the magnitude of the lowering of the second body 5 relative to the first body 1.As soon as the second body 5 finishes descent relative to the first body includes a geared motor 30 so that he brought the shaft 31 to rotate in the direction of arrow Z, which causes lifting of the body 5 relative to the body 1.This cycle of operation may be repeated.To obtain the desired period of movement you can make an impact on the weight of the second body 5, the lifting height of the second body, the braking gear motor during descent of the second body and the power PR is Ana for the implementation of the moving bodies 1 and 5 relative to each other.Thus in Fig. 3 shows a motor-reducer 40, resulting in a rotation of the disk 41, which carries on its periphery four V-shaped angle 42.This geared motor is mounted on the plate 43, secured to the upper side of the first body 1.The second body 5 is connected with the rod 44, pivotally connected to the lever 45. The rod 44 can slide in the sleeve 46 in the first body 1. The lever 45 has at its free end a finger 47, designed to enter the recess of the U-shaped brackets 43 (see Fig. 5).Such a device operates as follows.During half A disc 41 of the lever 45 and the rod 44 is moved upward, while the second body 5 is lifted.During the other half's drive finger 47 is not included anymore in the hollow of the elbow 42, therefore, under the action of gravity of the second body 5, the rod 44 and lever 45 quickly slide in the sleeve.In Fig. 4 shows another variant of the means 7, which can be used in the invention.These means 7 is formed by a plunger 50, the lever 51 of the piston 52 which is connected with the second body 5.This pusher, or more accurately the chamber 53 of the latter, below the piston 52 and is connected with the pump 54 through drobopro is imposed on the piston.A pusher mounted on the bottom 3 of the body 1 and provided with a valve 56, which can be rotated (arrow Q) around the axis 57. The closing of the valve 56 is carried out by means of latch 58, controlled electrically (the movement of the latch shown by the arrow P).When the piston is in its upper position control the latch to allow the valve 56 to rotate around the axis 57.This rotation or opening of the valve is carried out in a natural way under the action of gravity of the body 5 and due to the fact that the axis 57 is installed with an offset from the axis of symmetry of the valve 56.The action of gravity 5 enables removal of water contained in the chamber 53 of the plunger 50, which occurs as long as the finger 59 which is connected with the piston 52 will not rest against the surface of the valve and will not cause rotation of the latter and closing the latch.This cycle of operation may be repeated.Instead of using the pusher as a means 7, intended for realization of the relative displacement of the bodies 1 and 5, you can use system that contains a connecting rod, a crank mechanism or a Cam etc.The following describes the use of a crank mechanism or to the waterline device, to ensure the relative stability of the device, mostly stable equilibrium.In Fig. 6 shows a cross section of another form of the invention.This device has a spherical casing 2 and the body 5, associated with the casing 2 by using the 7.The body 5 is formed adjacent disks 119, having a Central hole, in which is placed the sleeve Ertalon (Ertalon). In the Central hole of the sleeve can pass guide rod 121 connected to the casing 2. The use of sleeve Ertalon allows you to limit the friction forces existing during sliding of the sleeve along the rod 121.Tool 7 includes:
the motor 122 mounted on the second body 5, the shaft 123 which causes the rotation of the gear 124, the subsequent presentation of the totality of the motor-reducer is indicated by the position 150.- crank 125 driven shaft 140 of the gearbox, and
rod 126 associated one of their ends by means of finger 127 with the crank 125 and at the other end with your finger 128 - rod 121.The connecting rod and crank are located in planes parallel to the rod 121. Rotation of the shaft 123 and, therefore, the shaft 140 causes the on or more of the springs 9 is installed between the pin 128 and the body 5 to compensate, at least partially, the effect of gravity.The device comprises a control system placed outside the sphere. This management system is supplying power to the gear motor 150 by cable 129. This cable is connected with junction box 141, from which two wires 142 power gear motor and wires 144, 143, 145 to the acceleration sensor 77, the synchronization sensor 76 (controlling the position of the crank mechanism) and to the speed sensor 60.The cable 129 allows the transmission of sensor signals to the control system. The cable 129 allows the device shown in Fig. 6, to move freely on the surface 8 of the water.The control system provides power to the motor-reducer 150. Data transmitted over cable 129 voltage gear motor 150 can vary from 0 to 24 C. the System allows to obtain the speed error, not exceeding 0,5%, but this does not mean that the voltage has a constant value. Applied nutrition this type, which allows to regulate in two quadrants, i.e. inhibition or increase the speed of rotation when the direction of rotation is always the same.Estrovertida, in which can move the guide body 155 mounted on the spherical casing 2, this body has the shape of a sleeve.The body 5 includes:
camera 152, designed for filling with water to increase body weight by 5,
- the motor-reducer 150, resulting in the movement of the crank 125 is connected by a finger 127 rod 126, one end of which is connected by the finger 128 to the guide body 155,
the control system 14, and
the pump 151, designed for emptying of the chamber 152.Spherical casing 2 has in its lower part of the cavity, which houses the battery 158, the recharge current of the device, as well as pumps emptying 151 and filling 161 camera 152. This battery is fixed to the casing 2, for example, by studs are threaded and nuts 170.The device is provided with means 9 for compensating, at least partially, the action of gravity of the body 5. The tool 9 is formed by a spring which is held between the shaft 128 and the motor-reducer 150, connected to the chamber 152.Pump filling 161 is mounted on the spherical casing 2. Pump filling 161 and the pump discharge 151 are interconnected by a channel 153. This channel 153 has a camera 156, the volume of which corresponds to free the current between the pump discharge 151 and sleeve 155.To effect the filling of the chamber 152 and the discharge pipe has 162 leading from the chamber 152 in the spherical casing 2, permitting the removal or injection of air into the chamber 152.In the form shown in Fig.7 the form of the invention, the pipe 162 enters through the passage to the flexible tube 159 and channel 153 and extends through the end 163 of the sleeve 155, opposite the end adjacent to the battery 158. Cover 164 having an opening for free passage of the pipe 162, closes the end 163 of the sleeve 155, opposite the end adjacent to the battery 158.The pass, available in flexible hose 159 to enter the pipe 162 in the channel 153, is mostly a surface area exceeding the cross-sectional area of the pipe 162 to allow communication between the channel 153 and the upper part of the chamber 152 (item 184). This passage 184 is small compared with the cross section of the pipe 159, which allows to avoid the siphon effect for channel 153.The following briefly describes the operation of emptying and filling of the chamber 152.For filling of the chamber 152 of the pump 161 runs water into the chamber 156 and through channel 153 water enters the chamber 152. This water goes through the pump discharge, which is not included. During this operation the and removed, the operation of the pump 161 allows the passage of water through the pipe 162. This water then goes through the adjacent cover end 164. So get a device equipped with a fountain.Upon termination of the pump 161 connection allows you to avoid emptying of the chamber 152 by the action of the siphon effect.For emptying of the chamber 152 actuate the pump 151 (stopped when the pump 161). This pump 151 supplies water in the channel 153 to the pump 161 and this water goes through the pump 161.The control system receives signals from the speed sensor 60 of a drive motor 122 of the gear 124, the synchronization sensor 76 and the acceleration sensor 77. The control system is marked POS.14.The current from the battery 158 is connected to the control system using wires 169. This current changes in the control system 14 before acting on the wire 160 to the drive motor 122 of the gear 124.Battery 158 can be recharged using the current flowing through magnetic coupling. To implement this magnetic coupling casing contains half of the magnetic circuit 132 around which is wound a coil 133. This winding is connected by means of a rectifier (includes electric bell) 139 with battery 158. the Oh it half 134 and turn the other half 134 from the AC source.In Fig.8 shows the control system of moving bodies relative to each other.This control system consists of:
from block 74 to automatically control the speed of the gear motor unit, designed to change the supply voltage of the motor-reducer for receiving the shaft speed reducer, which is close to the desired speed, with precision, for example, up to 0.5% (for example, the speed of rotation of the shaft 140 of the gear is from 20 to 40 revolutions per minute), and
block 75 automatic control phase, designed to control the phase displacement between the bodies relative phase of motion generated in the liquid or on the surface.Block automatic speed control 74 is connected with the speed sensor 60 that is connected to the driving motor gear 122, and a synchronization sensor 76 of the shaft of the gear motor 124, that is, with a crank mechanism.Block automatic control phase 75 is connected with the acceleration sensor 77 and synchronization sensor 76.The control device includes a unit for automatic speed control 74 and the block of automatic control phase 75, mainly is part of the I power supply unit 131 of the driving motor 122 of the gear 124.Block automatic speed control 74 contains:
- item memory 81 for storing a reference value of the motor speed-reducer, which is transmitted through the cable 82 to the power supply unit 131,
- item memory 83 for storing reference values of the period of rotation of the gear motor
the sensing element 106 signals from sensors
- item test 107 to determine whether completed turnover of the gear motor, and if a negative answer again for reading out the signals of the sensor elements 106,
the signal processing unit 84, coming from the speed sensor 60 and the synchronization sensor 76 that is designed to determine the average period of rotation of the motor-reducer (average over several revolutions of the motor-reducer),
unit definition 85 bias of the mean period of rotation of the gear motor from the reference value,
block 86 of the signal change of the reference value of the motor speed-reducer in function of the measured errors (for example, by increasing or decreasing the reference value by an amount equal to the error multiplied by a constant factor) thus, in order to regulate the motor speed.Unit ed the read element is provided 94 from the synchronization sensor 76,
- item test 95 completion of the turnover of the gear motor, if the turn is not completed, re-turn to the stage of reading by means of element 94,
the processing unit 87 signals from the acceleration sensor 77, is used to determine the wave period, average wave period (average for a certain period of time) and the maximum and minimum amplitude of the waves. This unit 87 allows to determine, based on these values, the time of the passage of waves through a certain state,
block 98 allocation resonant frequency waves (for example, by Fourier transform or Hamilton),
block 88 to determine the phase difference of the gearbox and the waves used to determine the average speed of the gear motor, its period and comparing the time of passage of the wave through a particular state (for example, the state in which the wave reaches the middle level) and the moment of passage through the extreme condition of the crank mechanism. Thus, the block 88 is used to determine the existing difference between the phase of the gear motor and the phase of the wave,
block 89 comparing the average value of the phase difference with a reference value.This unit 89 determines the average magnitude of the difference in phase is obtained b the surveillance frequency of the motor-reducer with the resonant frequency of the waves, moreover, in the specified test element, the wave amplitude is compared with a predetermined value (10 cm, which corresponds to approximately 10% of the diameter of the spherical casing). If the difference between the speed of the gear motor and the resonant frequency of less than 5%, or if the amplitude exceeds a predetermined value, the average value of the difference in phase is sent in block 91. Otherwise, return to step reads in the elements 93, 94 for the implementation of a new cycle of automatic control phase,
block 91 correction of the reference value of the motor speed-reducer in the memory element 92. This value is transmitted to the power supply unit 131 of the gear motor. This cycle of automatic control is then repeated, starting with reading the elements 93, 94.Unit 91 determines the direction of the adjustment speed as well as the necessary changes speed to reduce the difference in phase. These changes represent the minimum value between the predefined maximum change and the product of the gain on the measured phase difference. Approximately 10% of the diameter of the spherical casing.The block contains the cell that is used in the implementation if the It can be noted that the microprocessor can contain a block that is designed to change the desired value of the difference in phase (the memory element 90) and speed (memory element 83), in order to change the motion of waves or to place the device in the pool, especially on its surface. In fact, you can create the ability to move the device, creating changes in the difference in phase.In Fig. 9 and 10 are shown on the time axis position of the bodies relative to each other, as well as the level N, which is corresponding to the invention the device.in Fig. 9 shows the position of the bodies relative to each other with the purpose of receiving waves of maximum amplitude. As you can see, the body 5 moving relative to the casing 2, is ahead in phase by 90o, the body 5 is in its middle position at the location corresponding to the invention the device at the maximum or minimum level wave (time t1, t3, t5), and in the end position, when the device is in the middle position (time t2, t4). Indeed, the body 5 is in its lowest position at time t2which is shifted HP CLASS="ptx2">If you want to quickly extinguish the excitement in the pool, then change the phase of moving bodies between themselves so that this movement was in the quadrature backward relative to the motion of the waves.In Fig.10 device defazirovka at -90o(quadrature ago) relative to the wave. At time t2the body 5 is in the middle position, while the wave has a maximum level. At time t3wave has some intermediate level between the maximum level and the average level, while the body 5 is approaching the top of the casing 2. At time t3the body 5 is located near the top of the casing 2, while the device is located at an intermediate level between the maximum level and middle level. At time t5the body is lowered and the time t6reaches the middle position. The minimum level is reached at time t6.In order to cause the device to the position shift on the 90oforward phase (shown in Fig. 10 situation), change the speed of rotation of the motor at time t8(the moment when the crank mechanism is located at the bottom dead condition, this is the position shown at C denotes the point of connection of the connecting rod and crank, and dash T shows the position of the crank relative to point C.In the form shown in Fig. 10 case at time t8reduce the speed of rotation of the motor by a factor of two, so after a half-turn of the crank body 5 will be located near the top of the casing 2, while the device is on an average level (time t16). Between the moments of time t8and t16the body 5 is held from a position adjacent to the base of the casing 2 in a position adjacent to the top of the casing 2.At time t16set the normal speed of rotation of the motor.The object of the present invention is the creation of the system, producing a signal at the moment when the body, in particular a floating body must undergo immersion in the liquid in which or on which surface should be created movement.This system is built into the device. In addition, such a system may be used to determine when the swimmer must submerge the floating body in the liquid to get traffic, in particular, on the water surface of the pool.This system contains the acceleration sensor 200 that is associated with the microprocessor 201 (see Fig. 11).After determining the resonant frequency, the microprocessor determines the amount of resonance and the moment when the floating body must be submerged in the liquid. At this point, the microprocessor generates a signal sent to the control system 203. This can be, for example, a sound signal, light signal, etc. to warn swimmers about what he should immerse floating body.The automatic control system 203 includes a block 204, the timing of generation of the warning signal to take into account the response time of the swimmer.As for the private view of the exercise device shown in Fig. 6, in which the microprocessor determines the period of the motor by the La) is stored in the memory element 83 unit automatic control speed 74.Finally, the floating body may also contain a pressure sensor 205, designed to determine the force exerted by the swimmer when submerged body. The pressure measurement can be carried out using floating body of elastic material. In this case, apply the swimmer force causes deformation of the body and, as a result, the change of volume of the floating body and, consequently, the pressure inside it. This pressure measurement is sent to the microprocessor and is taken into account to determine the moment in which to immerse the body to get the maximum wave amplitude.A matter of course that various modifications can be made to the device.So, for example, necessary to implement the operation of the device energy can be obtained from batteries, solar cells, rechargeable, for example, using a magnetic connection, batteries, etc.As for the accelerometer, that for this purpose can be used for measuring the voltage corresponding to the movement of the load.The system control device may be placed outside of the device or to be in it. The device can be equipped with a transponder signals, narom.For pools of small size (for example, having a surface area of up to 50 m2energy required to obtain waves of substantial amplitude by means shown an Fig. 5 device (the diameter of a spherical shell which is 0.75 m), is about 100 watts. This energy can be reduced by up to 40 watts, if must be received waves of small amplitude (the total weight of the device 100 kg).The device can be used in enclosed or semi-enclosed bodies of water to obtain a resonant movements, such as swimming pools, swimming pools, sewage treatment, swimming pools, sewage treatment, swimming pools decanting and others in the chemical industry, etc.The motion of bodies relative to each other is vertical. However, this movement may be horizontal. This movement may be continuous or intermittent, pulsed or sinusoidal.Finally, for the case of using the device in the pool can be installed along the walls of obstacles designed to reduce the depth of the basin along these walls and, therefore, limits the height of the waves along the walls and, therefore, limits the height of the waves along the walls of a swimming pool shall Tvout waste collection in certain places on the bottom. This allows for ease of swimming pool cleaning, as dirt localized in certain areas.These experiments also showed that it is possible to obtain waves of different nature (such as solitary wave and others) depending on the form of their excitation (continuous or discontinuous sinusoidal or pulsed). 1. The device for generating motion in a liquid, in particular on its surface in the reservoir, limited to one or more walls of the containing element in contact with the liquid, made in the form placed on the liquid surface or immersed in her unit, not associated with stancog reservoir and containing two bodies connected among themselves by means of means of their mutual displacement, characterized in that the first body is a casing that moves the second body, and the device is equipped with a control system of reciprocal movement of bodies, includes block automatic regulation of the speed of relative displacement of the bodies and block automatic control of the phase of reciprocal movement of the bodies relative phase of motion generated in the liquid or on its surface, and the control system is connected with the sensor uskoreniye.2. The device under item 1, characterized in that the sensor amplitude of the waves is a sensor echo depth.3. The device under item 1, characterized in that it comprises a means of compensating, at least partially, the impact of gravity of the second body on the first body.4. The device according to p. 3, characterized in that the remedy of gravity of the second body on the first body formed of an elastic element placed between the base of the first body and one side of the second body.5. The device according to p. 4, characterized in that the remedy of gravity of the second body on the first is a spring, one end of which rests on the Foundation of the first body, while one of the parties of the second body parallel to the given base, is connected with the other end of the spring.6. The device under item 5, wherein the first body has the form of a tank, the base of which is connected to the second body through the moving bodies relative to each other, made in the form of the plunger rod.7. Device according to any one of paragraphs.1 and 2, characterized in that the means of moving bodies relative to each other includes a motor-reducer with the shaft and rde first body.8. The device according to p. 7, characterized in that the means of moving bodies relative to each other includes a motor-reducer associated with the disk having at least one recess and connected with the second body of the rod, with which the hinge is connected to the lever with the free end of the finger placed in the recess, and the specified motor-reducer is mounted on a plate fixed to the upper flange of the first body.9. Device according to any one of paragraphs.1 and 2, characterized in that the means of moving bodies relative to each other contains mounted on the first body, the motor-reducer connected to a crank connected with the rod, in turn, connected by means of a finger with the second body.10. The device according to p., characterized in that as the gear motor used a geared motor with variable speed.11. Device according to any one of paragraphs.1 and 9, characterized in that the unit for automatic speed regulation and automatic control of the phase associated with the sensor, generating a frequency proportional to motor speed-reducer, synchronization sensor generating a signal upon reaching a crank mechanism for end position, and an acceleration sensor.
< / is the unit for automatic control of speed, containing element connected in series read signals from sensors, element test, the block processing of the signals from the speed sensors and the synchronization unit determining the deviation of the average value of the period of rotation of the gear motor from the reference value, the processing unit changes the reference value of the motor speed-reducer, the output of which is connected to the first power supply input, and the inputs of the sensing element is connected to the speed sensor that is connected to the driving motor, and to the synchronization sensor that is connected to the gearbox, a memory element for storing a reference value of the rotational period of the motor-reducer, the output of which is connected to the second input unit determining the deviation of the average value of the period of rotation of the gear motor from the reference values, and unit automatic control phase containing element connected in series to readout signals from the acceleration sensor, the signal processing unit from the acceleration sensor block allocation resonant frequency of the waves, the block determining the phase difference of the gearbox and the waves, the block comparison, the average value of the phase difference with a reference value, the test-element comparison of the frequency m of the memory element is provided, storing the reference value of the speed of a drive motor, the output of which is connected to the second input of engine power, connected in series elements read from the synchronization sensor and element testing completion of turn of the motor-gear unit, the second input is connected to the second output unit determining the phase difference of the gearbox and the waves, and the output connected to the third input of the sensing element of the sensor synchronization, and the second input of the test element is connected to connected between a second input elements of the readout signals from the acceleration sensor and sensor synchronization.13. Device according to any one of paragraphs.1 and 6, characterized in that the means for moving bodies relative to each other block contains a gas or a compressed working fluid, either gas or compressed working fluid, intended for the exposure on one or both of the body or at a special tool, and at one end of the pusher is provided by a flap made with the possibility of rotation around an axis that does not coincide with its axis of symmetry, and a latch for fixing the damper.
FIELD: mechanical engineering; testing facilities.
SUBSTANCE: invention can be used for stand tests of pumps of any application. According to proposed method full pressure at pump input is maintained constant by means of reservoir with free surface of liquid exposed to constant (atmospheric) pressure installed in intake pipeline. Working liquid saturated vapor pressure at pump input is changed by heating. Periodical measurement of required parameters in process of liquid heating makes it possible to calculate sought for cavitation margin Δh. Method is implemented by test stand containing pump to be tested, output throttle, flow meter, heat exchanger, service tank, pipe fittings, all arranged in closed hydraulic circuit, and reservoir with free surface of working liquid in combination with capsule made of heat conducting material connected to circuit at pump input. Space of capsule is divided into two parts, one of which is partly filled with working liquid and sealed, and other communicates with circuit.
EFFECT: improved accuracy of measurements and simplified determination of pump cavitation characteristics.
3 cl, 1 dwg
SUBSTANCE: in through portion of pipe with choking of through portion cavitation flow lock mode is set, and in zone of low density value of critical pressure of cavitation and liquid flow are determined, which flow is used to determined liquid speed in pipe neck. Received critical pressure value of cavitation is aligned with pressure of saturated steam of pumped liquid, after that to specially built calculation graph dependencies of relative value of critical pressure of critical speed of flow in channel neck are applied in the moment of setting of lock mode with different concentration of cores target concentration of cores of cavitation of pumped liquid is determined.
EFFECT: higher efficiency.
FIELD: aviation industry.
SUBSTANCE: device helps to get real pattern of liquid pressure distribution which flows about "blown-about" object in water tunnel. Device has driven frequency pulse oscillator, frequency divider, control pulse counter, longitudinal contact multiplexer which connect capacitors with shelves, lateral contact multiplexer which connect the other output of capacitors, matching unit, analog-to-digital converter, indication unit, water tunnel, blown-about object, grid with capacitive detector.
EFFECT: improved precision of measurement.
FIELD: experimental hydrodynamics.
SUBSTANCE: method comprises making a model dynamically similar to the marine engineering structure in mass, sizes, location of the center of gravity, and inertia moment and mounting the model in the experimental tank by means of anchor-type links provided with dynamometers. The device comprises experimental tank and model provided with anchor-type links for connecting with the frame. The anchor-type links are provided with dynamometers and devices for control of initial tension. The frame has flat horizontal base, vertical pillars , and blocks. The base is provided with the members for securing the vertical pillars at specified points of the base. The vertical pillars are provided with blocks and members that are mounted for permitting movement along the pillars and their locking at a given position. The model is provided with the pickups of angular and linear movements. The outputs of the dynamometers and pickups of angular and linear displacements of the model are connected with the input of the computer.
EFFECT: expanded functional capabilities.
2 cl, 3 dwg
FIELD: measuring techniques.
SUBSTANCE: method and device can be used for measurement of hydraulic-dynamic resistance of different surfaces moving in fluid. Time of load descending, which load is kinetically connected with disc rotating in water, is compared when surface of load is coated with different matters.
EFFECT: simplicity at use; reduced cost.
2 cl, 1 dwg
SUBSTANCE: method comprises modeling the process of interaction of water flow with a rough surface by changing the working member of the sloping chute for a precision member with the smooth surface, measuring the height of the water flow in the entrance and exit sections of the chute by means of micrometer with measuring needle, determining the flow rate, and measuring the width of the chute. The smooth member is changed for the working member provided with a rough surface, and the height of the water in the exit section of the chute is measured.
EFFECT: simplified method.
FIELD: experimental hydromechanics; designing of equipment for conducting hydrodynamic and ice searches of marine engineering facility models in model testing basins.
SUBSTANCE: proposed device includes towing trolley with frame rigidly secured on it; this frame is provided with bar which is connected with model through dynamometers and bearing plate. Dynamometers form three-support force-measuring system; they are provided in each support in form of two interconnected elastic members; one elastic member is made in form of five-rod member provided with longitudinal and lateral force sensors; it is located between two flanges. Second elastic member of dynamometer is made in form of membrane-type elastic member whose membrane is located between rigid rim and rigid central part of this member provided with threaded rod with elastic hinge mounted over vertical axis perpendicularly relative to membrane. Membrane, rim and rigid central part with threaded rod and elastic hinge are made integral. Rim of membrane elastic members is rigidly connected with one of flanges of five-rod elastic member in such way that threaded rod is located along vertical axis of support and is rigidly connected via elastic hinge with bearing plate secured on model. Membrane is provided with resistance strain gages forming vertical force measuring bridge. Second flange of each five-rod member is connected with additional bearing plate secured on bar.
EFFECT: enhanced accuracy of measuring forces and moments.
FIELD: the invention refers to experimental hydrodynamics and may be used for definition of the resistance of small objects to a running flow at tests.
SUBSTANCE: the arrangement is fulfilled in the shape of a grate with the width Bt. and the height ht, deepened at the height T formed by rods with a step ▵ fixed in the supporting contour and is located at a certain distance in front of the tested object. At that it is installed with possibility of independent displacement relatively to the tested object and is fastened on the object and/or the body or probably on the bodies moving together with the tested object relatively to the test gondola. It is also may be formed by a system of private turbulators fulfilled in the shape of grates with a different size of cells, with possibility of their independent displacement relatively to each other including the fastening on different bodies and located primary in-series. The private turbulators may be fulfilled in the shape of grates particularly with different main direction of the rods of the grate. The mode is in locating the turbulator in front of the tested object with possibility of independent displacement relatively to the tested object and fastening on the object and/or on the body probably on the bodies moving together with the tested object particularly to test gondola. At that the position of the turbulator relatively to the tested object particularly the distance and displacement relatively to the tested object and also deepening and probably dimensions are chosen on the basis of comparison of results of the trial run of tarring of objects of different scales.
EFFECT: possibility of investigating of small models and revelation of the influence of resistance of the surface of the model.
6 cl, 3 dwg
SUBSTANCE: invention refers to experimental hydrodynamics, hydrodynamics and aerodynamics of airscrew and can be used in shipbuilding and aircraft building. Method includes force field created by airscrew rotation and carrier moving, use of visualising facilities and field structure registration by optical equipment. Thus airscrew rotary speed is established assuming production and stream maintenance of visualising facilities. Field is registered by scanning in two transversely-spaced planes, i.e. horizontal and vertical, in front of, and behind, the airscrew. Thus boundary layer, turbulence areas, increased and decreased pressure areas, airscrew expansion angles, and whole flow structure are showed.
EFFECT: high-accuracy picture of airscrew propeller environment flow.
5 cl, 16 dwg
SUBSTANCE: test stand for amphibious vehicles has basin with entrance and exit ramp, side walls, road, ramp and basin borders. From both sides of exit ramp pits are made in which ends of tubular shaft are embedded. Parallel arms-brackets of sheet metal are attached to the shaft equally spaced from axis. Between attached arms-brackets, spacer pipe is preliminary embedded on shaft which pipe has rectangular pawl with holes on both sides. By means of these holes the pipe is attached to captivating sheet located on symmetry axis of exit ramp. At the end of arms-brackets with lugs, cylinder is attached on axis. This cylinder is made along generator of curve corresponding to curve of vehicle front bumper. Tube rings with pawls are put on shaft ends. The pawls are fixed on pit floors. Spheroidal flanges are fixed on shaft ends to which flanges arms are attached, with brought-out from pits ends having lugs, and pneumatic cylinders are attached to arms from two sides.
EFFECT: reduction of scope of work during test stand construction and provides getting true data about capability of vehicle to move over water surface on tired wheels.