Water discharge from flumes with rapid flow mode

FIELD: construction.

SUBSTANCE: water discharge comprises a supply channel 1, a transit one 2, between which a trench 3 is arranged, a side drain water conduit 6 and a shield 11 with a drive. The water discharge is also equipped with a jet-forming element 4, which is installed on the bottom of the trench and is arranged according to the shape of the cross section of the supply channel in the form of a tray capable of turning towards the supply channel. The lower end of the tray is fixed on the bottom hingedly, and the upper one is coupled at the bottom with a lever mechanism 7 capable of vertical displacement relative to the drain water discharge arranged on boards of the transit channel 2.

EFFECT: higher efficiency and reliability of operation under conditions of variable water level in a channel.

2 cl, 4 dwg

 

The invention relates to hydraulic engineering, namely to stabilize the diversion of water from the flume channels with gradients more critical, mainly on-farm distribution network.

Known water divider for a channel with a large bias, including inlet and outlet channels associated trench, located above the slot is rigidly fixed to the cutter. The bottom of the slot defined by the free-fall trajectory of the jet. Proper positioning of the cutter reached the fence the desired water flow in the outflow channels regardless of flow variations in the distribution channel. To achieve constant water drainage is based on the principle of dividing the flow vertically (USSR Author's certificate No. 120454, CL EV 13/00, 1958).

The disadvantage of this device is that it is not protected slots and drainage pipes from silting and stray load when the divider channel disconnected side channels. In addition, the inability to control intake flow under conditions of variable water level in the channel, since the pressure distribution in the channel drops to the minimum. The complexity of the changes of the slot depending on slope and flow rate of the main channel, and in pipes with reverse bias having a large hydraulic resistance (loss of energy in the water)that p is WKR reduces drainage and height, which requires a sufficient amount of water and the force of the hydrostatic pressure of the flow in motion. The cost of construction increases.

Known also water divider for channels with a large slope, including located between the inlet and transit channels trench side tailrace, the bars and the guide plate (shield drive) (USSR Author's certificate No. 351968, CL EV 13/00, 1970).

Because the plate is inclined, rolling her flow of water causes a vibration plate, which leads to disruption of the hydraulics of flow and splash water out of the channel. The device also has a low stabilizing ability of the water flow in the outlet conduit. Due to the installation of the lower end of the grid in horizontal guides in the gap between the lower end of the grate and the bottom of the channel can get drawn by the load, which may cause jamming of the grid, this leads to the partial termination of the water supply in the challenge. Violation of the kinematics of turbulent flow leads to congestion pressure on the plate, as a result of this operation is possible only in a small range of the opening above the trench, which also reduces the bandwidth allocation, the trench can occur coil currents, providing pressure on the plate (shield) from the bottom. The cost of building large enough for air flow 1 m3 /s

The purpose of the invention is improving the efficiency and reliability under conditions of variable water level in the channel.

This goal is achieved by reducing the drive power, which element is mounted on the bottom of the trench and run it on the cross-sectional shape of the inlet channel in the form of a tray and set on the horizontal axis in the initial part of the wall of the trench, and the upper end connected below with the lever mechanism can be rotated in the direction of the inlet channel and relative to the outlet conduit, placed on the sides of the channel.

In addition, tailrace is at the bottom of the arcuate plate mounted on the circuit with the capability of interfacing with the inlet, bulge up, and the initial end of its fixed hinge can be rotated in the direction of transit of the canal and with the formation of the guide flow path, the cloth which covers the opening of the gap relative movement of the free edge of the rolling stream directing element.

The proposed device eliminates flowing hydraulic jump, overloads and failures lift, increases the amount of water and reduces operating costs by increasing the turnaround periods in comparison with the known device for construction.

Engl is for a specific opening of the exhaust is water intake, and the surplus goes to reset and washing specified turbidity corresponding to the specified standards, the whole system is in a stationary state. The expansion of the zone of influence, which element on the work of the convex curved plate secured in the lower part of the discharge conduit, and the ability to take a given water flow rate on the height of the center of the inlet channel from the minimum to the maximum level and partially discharged water flow in the transit channel for washing can reduce the size of the construction width of the channel forming the hydraulic flow structure, and cost while improving the quality of their work.

The execution of which element in the cross-sectional shape of the tray in the trench along the axis of the channel established with the possibility of the lever vertical movement of the hinge relative to the fastening at the front wall of the trench allows the use of the hydraulic structure of the turbulent flow (wave and bezosnovnogo), a change in the set of angles as which element, and a flat convex plate with mates in the upper part with a curved surface of the inlet and the outlet conduit, ensuring reliable operation of the facility as a whole. Thus the bottom part, which element in view of the tray, falling toward the bottom of the transit channel, protects the hinge connection, as the connection of the lever with the upper movable part from jamming held deposits and provides full travel from vertical to horizontal positions. The dismemberment of the upper part of the discharge conduit from the trench section extends the range of possible regulatory structure of turbulent flow in the inlet channel (the maximum velocity of the water at the center of the tray) due to the different inclination of the two boards, which differ structurally by appointment to the horizon: the raised thread on high, and then taken the calculated steady flow of water in drainage. The surpluses are ignored in the transit channel without damping the kinetic energy of the flow.

In addition, the curved plate (shield)attached to the lower part of the discharge conduit and curved toward the input end-of-way, smoothes the flow pattern of water (send down)passing through the slit (gap) and sends it to the bottom of the transit channel. This design approach provides protection against shock loads on the shield and the smooth entry of water in the tailrace channels - chutes with sufficient precision quality stable water intake, and fixing hinges protected from destruction.

Based on the foregoing, the authors believe that the offer is e technical solution meets the criterion of "significant differences".

Figure 1 shows the discharge outlet of the flume channels with rapid mode of motion; figure 2 - section a-a in figure 1; figure 3 is an embodiment of a culvert with a lever mechanism, a longitudinal section; figure 4 is the same, the discharge figure 3 cross section.

The outlet consists of the inlet 1 and transit 2 channels, dump trench 3, which is placed at the bottom of which the element 4 with the hinge 5 in the front wall of the trench 3 in the same plane with the bottom of the inlet channel 1. Tailrace 6 mounted on the sides of the transit channel 2. Which the element 4 is made in the cross-sectional shape of the inlet tray. The upper free end of its associated bottom with lever mechanism 7 seal 8 and the actuator 9 can be moved vertically relative to the outlet conduit 6, placed on the sides of the transit channel 2. The upper end wall of this conduit is rigidly attached to the slab 10. In addition, the upper part of the trench 3 is also covered by the plate 10.

Side water flow, after which the element 4 is a flat convex plate 11 (curved shape) has an adjustable tilt angle due to the lifting mechanism 13 and the hinge connection 12 with a bottom outlet conduit 6. The discharge conduit is connected with a flexible hose 14 to fill. To regulate the flow of a given water flow in twumasi the conduit 6 in the whole range of change of the slope of the inlet channel 1 set work which element 4 and the concave plate 11, bump up, with the above elements provides the reliability of the entire structure.

An embodiment of the device in figure 3 and 4 provides for the installation of the lever 7 with the actuator 9 directly near the lifting mechanism 13 connected to the flat concave plate 11 with the hinge 12, the combination of which with the above elements provides the reliability of the entire structure as a whole.

The discharge outlet of the flume channel operates as follows.

Suitable for channel 1 stream of water which enters the element 4 in the form of a tray which is mounted a lever mechanism 7 with a gear 9 on the planned water supply line convex plate 11 with the hinge 12 to the inner cavity and the outlet conduit 6 with a flexible hose 14 to the sprinkler. This thread doing on the convex plate 11, communicates with an overlap of 10 that provides the conduit 6 full cross-section at the entrance. Convex plate 11 cuts raised the water flow at a given angle of ascent, which element 4, and the excess of it is directed into the gap between the ends of the elements 4 and 11 and receives downstream transit channel 2. In the transit channel 2 connection with the flow of water received between the side walls of the trenches 3 and element 4, and acquire straight-forward character d is to achieve for different conditions of turbulent flow, sediment. The location of the convex plate 11 can be divided thread that when raised above the trench 3 and promote it in the conduit 6, in predetermined ratios of water flow.

The upper part of the clip plate 11 of the flow of water is isolated from the hydraulic disturbances over the trench 3 and the transit channel 2 and so compact moving stream without spouting. The water flow in the conduit 6 adjust change vertical movement element 4, which, together with the formation of the tract - blade convex plate 11.

If necessary, change the selected flow rate required by the lifting mechanism 9 with the arm 7 to which the element 4 to move in corresponding to the desired flow rate, while the curved plate 11 is opened from the inlet and the outlet conduit 4 for optimal water intake. When lowering element 4 until the full flush it is placed in the trench 3, i.e. the entire water flow, sediment is transported in the transit channel 2. It should be kept in mind that the stability of transient hydraulic regime arising from the operation of these structures are provided with a rational layout and technically competent design of the culvert. This interdependent relationship and the awn main elements of the culvert provides operational reliability and accuracy of stable water intake when changing the water level and the optimal bandwidth in conditions of turbulent flow in the channel.

Elimination of flowing hydraulic jump, overloads and failures of these elements increases the volume of water not less than 1-2% and reduces operating costs in the amount of 5-6% due to the increase in turnaround periods in comparison with the known device at the same cost of construction.

1. The discharge outlet of the flume channels with turbulent regime of flow, including between the supply and transit channels trench side tailrace, shield drive, characterized in that, with the aim of improving efficiency and reliability in conditions of variable water level in the channel, it has which element mounted on the bottom of the trench, and executed on the cross-sectional shape of the inlet channel in the form of a tray can be rotated in the direction of the inlet channel, the lower end of the tray is fixed on the bottom hinge, and the top connected from below to the lever mechanism with the possibility of vertical movement relative to the outlet conduit, posted on the sides of the channel.

2. The outlet according to claim 1, wherein the discharge conduit includes a retaining device made in the form of an arcuate plate mounted on the circuit with the capability of interfacing with a curved surface of the inlet, bulge upwards, the end of which is fixed to the bottom is at the end of the conduit swivel drive and open side facing the stream directing element formation guide in the direction of the flow path, the cloth which covers the opening of the gap relative movement of the free edge of the rolling stream directing element.



 

Same patents:

FIELD: agriculture.

SUBSTANCE: invention relates to flooding of worked out peatlands in the restoration of peat bogs. The method is carried out in the autumn-winter period with the establishment of a stable average daily air temperature below the freezing point of water with use of ice blocks made in the form of polyhedra. Near the available source of fresh water the blocks of ice are produced. Then the blocks manufactured using the vehicle are moved to the mapped areas of worked out peatlands and put in few layers in the structure in the form of a polyhedron. At that at each mapped area of worked out peatlands, depending on the area of the site one or more structures from blocks of ice are erected.

EFFECT: increased level of fire safety in the areas of worked out peatlands, reduced level of the risk of emergencies and improved overall environmental situation around the worked out peatlands.

2 dwg

FIELD: construction.

SUBSTANCE: device comprises a frame, a processing module, antenna units, a motion sensor and a propeller for free movement along a bottom. Antenna units are arranged along the frame perimetre. The frame consists of rods and represents three parts connected in a hinged manner.

EFFECT: increased quality of doing operational monitoring of feeder canals by surveying an entire feeder canal along the perimetre and much faster survey of canals.

1 dwg

FIELD: construction.

SUBSTANCE: air-hydraulic water lift contains lower tank with inlet and outlet tubes, overhead tank, gate switch and partition of pools. Additionally water lift contains upper tank with air duct and water conduit with return valve communicating with overhead tank. Lower tank is equipped with floater and gates with rods. Gate switch is made in the form of cylindrical sealed body. Flexible and moving spherical element is located inside cylindrical body. Support in the upper part has gate fixing component. Fixing component communicates with rods of lower tank having thrusts to contact levers of gate switch.

EFFECT: reduction in lost of energy during friction and simplification of liquid lifting.

4 dwg

FIELD: construction.

SUBSTANCE: device comprises a trench antifiltration curtain embedded into a confining layer with a vertical water-impermeable flexible screen and a trench filler from filtering material, closed along the perimetre of the dried area, inside which there is a secured site, a device for deep directed distributed supply of fresh water into the soil massif of the dried area and the secured site and a drainage device. The drainage device is made in the form of a drainage vertical well (wells) with depth below the level of ground waters. The device for fresh water supply is made in the form of water-absorbing pits (pit) with depth to the level of ground waters. In the first version the drainage well is installed in the centre of the secured site and is connected with the drainage horizontal wells arranged ray-like in the soil layer with ground waters under the secured site. Pits are arranged along the secured site perimetre in the medium of filtering material of the antifiltration curtain trench filler. In the second version two and more drainage wells are installed at one side of the secured site and are connected to each other by a drainage header. The device for water supply is made in the form of at least one pit arranged along the curtain perimetre in the medium of the filtering material of the curtain trench filler. In the third version two drainage wells are installed at one side of the secured site and are connected to each other by a drainage header and a slot drain installed at the depth below the ground waters level. The well is made at the opposite side of the secured site and is located in plan in the middle part of the trench filler from the curtain filtering material. In the fourth version two drainage well are installed one at two sides of the secured site, every of which is connected to drainage horizontal wells arranged ray-like in the soil layer with ground waters under the secured site. The device for water supply is made in the form of at least two pits, every of which is installed in the medium of the filtering material of the curtain trench filler. In the fifth version four drainage well are installed one at four sides of the secured site, every of which is connected to a drainage horizontal well arranged ray-like in the soil layer with ground waters under the secured site. The device for water supply is made in the form of at four pits, every of which is installed at the border of the dried area in the medium of the filtering material of the curtain trench filler.

EFFECT: increased efficiency of meliorative system operation and lower salt content in water-absorbing soil massif and drain flow down to rated parameters of mineralisation.

5 cl, 14 dwg

FIELD: construction.

SUBSTANCE: invention is related to operational monitoring of irrigation system tray channels technical condition in hydrotechnical construction. In method for performance of operational monitoring with the help of nondestructive check instruments and with application of ultrasonic method and method of impact pulse, reinforced concrete tray is separated into three survey zones by detection of specific defects and damages for each zone. Zone 1 is investigated to detect defects and damages that lead to destruction of tray bottom part. Zone 2 is investigated to detect skew cracks in tray board. Zone 3 - to detect long cracks, which lead to collapse of tray board. Using obtained data, technical condition of irrigation system tray channels is predicted.

EFFECT: more accurate assessment of stressed-deformed condition of reinforced concrete trays of irrigation channels and to predict their remaining service life.

2 cl, 3 dwg

FIELD: construction.

SUBSTANCE: invention is related to nondestructive methods for control and diagnostics of operational condition of tray channels. Device for diagnostics and forecasting of technical condition of tray channels in irrigation systems includes frame, antenna blocks and motion sensor. Device is equipped with processing module. Frame copies channel shape and is equipped with support rollers. Antenna blocks are arranged along frame perimetre.

EFFECT: makes it possible to improve quality of tray channel operational monitoring, to speed up their inspection with nondestructive test methods and to carry out forecasting of remaining service life of tray channels.

3 dwg

Water lift unit // 2318956

FIELD: irrigation systems, particularly ones to be used with opened water streams using energy source, for instance hydraulic level drop at retaining structures.

SUBSTANCE: water lift unit comprises chamber with controllable water inlet, water outlet pipe and water lifting means made as pump. The chamber has orifice receiving water inlet flow regulation valve. The valve has float, rod and guiding means. The chamber is connected with water outlet pipe provided with water turbine having shaft extending into chamber interior and communicated with shaft of water lifting means pump.

EFFECT: possibility to create pressure difference enough for water lifting along with possibility to retain desirable structure throughput.

2 dwg

FIELD: irrigation, particularly artificial water canals.

SUBSTANCE: method involves punching perforation orifices in film web; cutting furrows; breaking down and spreading soil lumps; laying perforated film webs along furrow perimeter and securing film web edges to berm. Number of perforation orifices made in film web increases from front furrow end to rear end thereof. Method is realized with the use of device including frame carrying working tool used for furrow cutting. Spreader, perforated film web accumulation means and pressing rollers are serially installed behind the working tool. The spreader comprises two rows of paired rollers freely rotating about their axes fixedly secured to shaft by means of bearings and loaded with spring. Roller is installed behind perforated film web accumulation means. The roller may perform limited vertical movement and is pressed with spring to furrow bottom and sides. Pressing rollers and scrapers are arranged behind the roller.

EFFECT: prevention of irrigation water losses during furrow filling with water; elimination of plant rootage damping-off.

4 cl, 3 dwg

FIELD: hydraulic engineering, particularly devices to maintain predetermined water level in contour-ditches of rice irrigation system.

SUBSTANCE: water spillway device adapted to discharge water from upper pool of contour-ditch comprises partition with delivery outlet to be closed with inclined gate arranged from lower pool side and supported by horizontal pivot pin, control chamber and elastic sealed vessel located in control chamber. Control chamber includes delivery pipe having inlet orifice provided with valve, which is connected with upper pool float through rod. Elastic sealed vessel comprises discharge orifice having diameter smaller than that of delivery pipe and acts on piston cooperating with gate through rod and hinge. The gate has side partitions and sealing means.

EFFECT: possibility to use natural atmospheric precipitations for irrigation purposes, prevention of crop losses due to increased accuracy of necessary water level maintenance in rice contour-ditches and provision of optimal rice irrigation regime along with decreased labor inputs.

1 dwg

FIELD: agriculture, particularly irrigation ditches, namely gravity flow, open channel water distribution systems to control water flow in irrigation canal with water consumers, which take water along the canal.

SUBSTANCE: water-distribution system comprises irrigation canal with head gate, sealed chamber with sliding float communicating with upper pool and discharge means through three-way gate installed in supply pipeline, three-way gate control sensor, movable water consumer with water-intake means, blocking structure made as elastic shell and water level sensor. Water-intake means of water consumer is provided with sheet fixedly secured to upper end part thereof and adapted to block upper part of water flow. The sheet is associated with spherical elastic shell, which blocks remainder water flow part and provided with balancing means. The balancing means is located around spherical elastic shell perimeter. The sheet is linked to head part of water-intake means by flexible tie. Hollow body is connected to outer side of water-intake means. The hollow body is adapted to receive water level sensor made as float with vertical post. The post has two parallel contact rods connected to one post end and associated with power source. The contact rods cooperate with trolley cables in horizontal plane. The trolley cables are carried by masts installed on irrigation canal berm and distributed along the full canal length. The trolley cables are connected to power source through spring-loaded contact rods arranged in water-intake means and receiver/transmitter unit. Time delay unit is connected with gate control sensor. Sliding float is connected with head gate through kinematical connection means. Movable water consumer is provided with programmable control device, which controls water-intake means location height.

EFFECT: reduced operational costs, decreased water consumption for agricultural crop watering, decreased water reserve volume, simplified structure and reduced costs of irrigation system object construction.

1 dwg

FIELD: agriculture, in particular, desalinization of saline soil of agricultural lands.

SUBSTANCE: method involves cutting slits on plot to be desalinized; feeding rinse water onto strips between slits; removing salt from slit surfaces and spilling soil therein, with slits being cut to depth exceeding depth of season soil wetting with precipitation; providing cavities on strips between slits; closing cavities with shields of hydrophobic water-impermeable material, said shields being equipped with perforations extending along their central axes and float members; fastening shield edges in upper part of slits; providing soil desalinization facilitated by precipitation. Upon precipitation, rain water flows over walls of cavities to infiltrate through perforations and fill cavities bottom part, with the result that salt is washed into depth of soil to be desalinized. Moisture will be preferably moved by capillary force and due to evaporation of moisture from slit wall surfaces toward slit walls, accompanied by accumulation thereon of salts. Washing process may be accomplished during one or several seasons depending upon precipitation intensity and salt concentration. After completing of desalinization processes, shields are removed, salts are buried by spilling soil into slits, and soil on desalinized plot is mellowed to depth of season soil wetting. Burying of salts at the level below depth of season soil wetting and destruction of capillaries by deep mellowing of desalinized soil layer protect it from secondary salinization.

EFFECT: increased fertility of agricultural areas on unirrigated agricultural lands in the absence of potable water sources without the necessity of constructing expensive water feeding systems.

4 dwg

FIELD: agriculture, in particular, desalination of agricultural lands.

SUBSTANCE: method involves feeding water to land to be desalinated; cutting slits therein; irrigating strips between slits; removing salt from slit wall surfaces and spilling soil thereon, with slits being provided at distance from one another which does not exceed doubled value of capillary transfer of soil moisture at land under desalination process and slit cutting depth being set so that it exceeds value of capillary lifting of moisture by soil at land under desalination process; forming ridges with two sloping surfaces on strips between slits; placing pipelines with droppers thereon, said pipelines being connected to water supply main; covering strip surfaces with water-impermeable shields made from hydrophilic material; fastening shield edges in upper part of slits; supplying water from droppers up to termination of desalination procedure, with following interrupting of water supplying process; moving soil layer with salt from slit walls onto slit bottom and forming water-impermeable layer of hydrophilic material above said soil layer; leveling slits.

EFFECT: reduced consumption of washing water, increased efficiency in soil desalination, decreased consumption of labor and costs for extraction, conveyance and disposition of salts settled on slit walls.

3 dwg

Automatic spillaway // 2283920

FIELD: hydraulic equipment, particularly to drain water from tailing pits, for closed drainage systems formed in zones characterized by severe climatic conditions.

SUBSTANCE: spillaway comprises service water vessel, shutoff member made as lower water level regulator arranged in discharge pipeline, upper water level sensor and magnet, which cooperates with magnetic mass when shutoff member is in its closed position. Float-type lower water level control member is installed from discharge pipeline interior side and is used as heat insulation means. Upper water level sensor is made as float and connected to shutoff member by means of vertically-aligned adjusting rod, which regulates upper water level. Magnetic mass is located on lateral pipeline. Magnet is installed on shutoff member.

EFFECT: increased leakage prevention, elimination of service vessel cooling and, as a result, extended field of application.

1 dwg

FIELD: agriculture, particularly irrigation ditches, namely gravity flow, open channel water distribution systems to control water flow in irrigation canal with water consumers, which take water along the canal.

SUBSTANCE: water-distribution system comprises irrigation canal with head gate, sealed chamber with sliding float communicating with upper pool and discharge means through three-way gate installed in supply pipeline, three-way gate control sensor, movable water consumer with water-intake means, blocking structure made as elastic shell and water level sensor. Water-intake means of water consumer is provided with sheet fixedly secured to upper end part thereof and adapted to block upper part of water flow. The sheet is associated with spherical elastic shell, which blocks remainder water flow part and provided with balancing means. The balancing means is located around spherical elastic shell perimeter. The sheet is linked to head part of water-intake means by flexible tie. Hollow body is connected to outer side of water-intake means. The hollow body is adapted to receive water level sensor made as float with vertical post. The post has two parallel contact rods connected to one post end and associated with power source. The contact rods cooperate with trolley cables in horizontal plane. The trolley cables are carried by masts installed on irrigation canal berm and distributed along the full canal length. The trolley cables are connected to power source through spring-loaded contact rods arranged in water-intake means and receiver/transmitter unit. Time delay unit is connected with gate control sensor. Sliding float is connected with head gate through kinematical connection means. Movable water consumer is provided with programmable control device, which controls water-intake means location height.

EFFECT: reduced operational costs, decreased water consumption for agricultural crop watering, decreased water reserve volume, simplified structure and reduced costs of irrigation system object construction.

1 dwg

FIELD: hydraulic engineering, particularly devices to maintain predetermined water level in contour-ditches of rice irrigation system.

SUBSTANCE: water spillway device adapted to discharge water from upper pool of contour-ditch comprises partition with delivery outlet to be closed with inclined gate arranged from lower pool side and supported by horizontal pivot pin, control chamber and elastic sealed vessel located in control chamber. Control chamber includes delivery pipe having inlet orifice provided with valve, which is connected with upper pool float through rod. Elastic sealed vessel comprises discharge orifice having diameter smaller than that of delivery pipe and acts on piston cooperating with gate through rod and hinge. The gate has side partitions and sealing means.

EFFECT: possibility to use natural atmospheric precipitations for irrigation purposes, prevention of crop losses due to increased accuracy of necessary water level maintenance in rice contour-ditches and provision of optimal rice irrigation regime along with decreased labor inputs.

1 dwg

FIELD: irrigation, particularly artificial water canals.

SUBSTANCE: method involves punching perforation orifices in film web; cutting furrows; breaking down and spreading soil lumps; laying perforated film webs along furrow perimeter and securing film web edges to berm. Number of perforation orifices made in film web increases from front furrow end to rear end thereof. Method is realized with the use of device including frame carrying working tool used for furrow cutting. Spreader, perforated film web accumulation means and pressing rollers are serially installed behind the working tool. The spreader comprises two rows of paired rollers freely rotating about their axes fixedly secured to shaft by means of bearings and loaded with spring. Roller is installed behind perforated film web accumulation means. The roller may perform limited vertical movement and is pressed with spring to furrow bottom and sides. Pressing rollers and scrapers are arranged behind the roller.

EFFECT: prevention of irrigation water losses during furrow filling with water; elimination of plant rootage damping-off.

4 cl, 3 dwg

Water lift unit // 2318956

FIELD: irrigation systems, particularly ones to be used with opened water streams using energy source, for instance hydraulic level drop at retaining structures.

SUBSTANCE: water lift unit comprises chamber with controllable water inlet, water outlet pipe and water lifting means made as pump. The chamber has orifice receiving water inlet flow regulation valve. The valve has float, rod and guiding means. The chamber is connected with water outlet pipe provided with water turbine having shaft extending into chamber interior and communicated with shaft of water lifting means pump.

EFFECT: possibility to create pressure difference enough for water lifting along with possibility to retain desirable structure throughput.

2 dwg

FIELD: construction.

SUBSTANCE: invention is related to nondestructive methods for control and diagnostics of operational condition of tray channels. Device for diagnostics and forecasting of technical condition of tray channels in irrigation systems includes frame, antenna blocks and motion sensor. Device is equipped with processing module. Frame copies channel shape and is equipped with support rollers. Antenna blocks are arranged along frame perimetre.

EFFECT: makes it possible to improve quality of tray channel operational monitoring, to speed up their inspection with nondestructive test methods and to carry out forecasting of remaining service life of tray channels.

3 dwg

FIELD: construction.

SUBSTANCE: invention is related to operational monitoring of irrigation system tray channels technical condition in hydrotechnical construction. In method for performance of operational monitoring with the help of nondestructive check instruments and with application of ultrasonic method and method of impact pulse, reinforced concrete tray is separated into three survey zones by detection of specific defects and damages for each zone. Zone 1 is investigated to detect defects and damages that lead to destruction of tray bottom part. Zone 2 is investigated to detect skew cracks in tray board. Zone 3 - to detect long cracks, which lead to collapse of tray board. Using obtained data, technical condition of irrigation system tray channels is predicted.

EFFECT: more accurate assessment of stressed-deformed condition of reinforced concrete trays of irrigation channels and to predict their remaining service life.

2 cl, 3 dwg

FIELD: construction.

SUBSTANCE: device comprises a trench antifiltration curtain embedded into a confining layer with a vertical water-impermeable flexible screen and a trench filler from filtering material, closed along the perimetre of the dried area, inside which there is a secured site, a device for deep directed distributed supply of fresh water into the soil massif of the dried area and the secured site and a drainage device. The drainage device is made in the form of a drainage vertical well (wells) with depth below the level of ground waters. The device for fresh water supply is made in the form of water-absorbing pits (pit) with depth to the level of ground waters. In the first version the drainage well is installed in the centre of the secured site and is connected with the drainage horizontal wells arranged ray-like in the soil layer with ground waters under the secured site. Pits are arranged along the secured site perimetre in the medium of filtering material of the antifiltration curtain trench filler. In the second version two and more drainage wells are installed at one side of the secured site and are connected to each other by a drainage header. The device for water supply is made in the form of at least one pit arranged along the curtain perimetre in the medium of the filtering material of the curtain trench filler. In the third version two drainage wells are installed at one side of the secured site and are connected to each other by a drainage header and a slot drain installed at the depth below the ground waters level. The well is made at the opposite side of the secured site and is located in plan in the middle part of the trench filler from the curtain filtering material. In the fourth version two drainage well are installed one at two sides of the secured site, every of which is connected to drainage horizontal wells arranged ray-like in the soil layer with ground waters under the secured site. The device for water supply is made in the form of at least two pits, every of which is installed in the medium of the filtering material of the curtain trench filler. In the fifth version four drainage well are installed one at four sides of the secured site, every of which is connected to a drainage horizontal well arranged ray-like in the soil layer with ground waters under the secured site. The device for water supply is made in the form of at four pits, every of which is installed at the border of the dried area in the medium of the filtering material of the curtain trench filler.

EFFECT: increased efficiency of meliorative system operation and lower salt content in water-absorbing soil massif and drain flow down to rated parameters of mineralisation.

5 cl, 14 dwg

Up!