A device for controlling water levels in hydraulic structures
The invention relates to hydraulic engineering and can be used to regulate the level of water in irrigation canals. The device includes wodoslawsky shutter with horizontal axis of rotation. Wodoslawsky the shutter is made in the form of a drum with blades. By forming the surface of the drum opposite to each other are calibrating holes for air and water. The horizontal axis of rotation with their ends secured in the guide with a possibility of free movement in a vertical plane. When changing the drop in water levels in the channel in one direction or another is filling or emptying the internal cavity of the rotating shutter. The shutter is moved along the guides up or down, which in turn changes the flow area for the passage of water. At the termination of the water disappears differential levels, and the cavity of the shutter is filled with water. The shutter is fully immersed. The use of the device allows to reduce the consumption of water for irrigation. 1 C.p. f-crystals, 4 Il. The invention relates to hydraulic engineering and can be used to regulate water levels in the irrigation channels.Known devices for regulating water levels nye holes for air and water (USSR Author's certificate 589327, MCI E 02 IN 13/00, 1978).However, the known wodoslawsky gates structurally complex and regulate the level when you pass water in one direction.In the proposed device, comprising wodoslawsky shutter, horizontal axis of rotation and an orifice for water and air, wodoslawsky the shutter is made in the form of a drum with blades, calibrated holes for air and water made on a generatrix of the surface of the drum opposite to each other, and a horizontal axis of rotation with their ends secured in the guide with a possibility of free movement in a vertical plane.In addition, the horizontal axis of rotation associated with counter flow of water.In Fig.1 shows a cross-section of an irrigation canal with the proposed device for regulating water levels in the irrigation channel, Fig.2 - he is a longitudinal section, Fig.3 is a structural diagram of a hull-borne shutter of Fig.4 is a view As in Fig.1.The proposed device includes wodoslawsky the shutter 1, the horizontal axis of rotation 2. The shutter 1 is made in the form of a drum with blades 3, the inner cavity 4 which is provided with calibrated holes 5 and 6, located on the generatrix of the surface basvarbocnaa move in a vertical plane and may be associated with a counter flow of water 9. In addition, the device may be equipped with a lifting screw mechanism 10.The device operates as follows.Wodoslawsky the bolt 1 is rotated on a horizontal axis 2 with the help of blades 3 in the direction of the water intake, the horizontal axis 2 moves freely in a vertical plane in the guide rails 7 and 8. During the rotation of the drum calibrated holes 5 and 6 alternately immersed in water or communicated with the atmosphere. When the water in the channel formed by the difference in water levels "Z" to the gate after him. Therefore, when the immersion calibrated holes 5 in water from the upper water fills the inner cavity 4 of the drum, as at this time other calibrated holes 6 are communicated with the atmosphere. When the holes 5 will be in the lower reach, is the emptying of the cavity 4 and the replacement of water by air through the holes 6. Holes 5 and 6 are calibrated so as to maintain a predetermined differential in water levels N at the proper flow of the water channel. Therefore, if you change the differential in one direction or another, filling or emptying the inner cavity 4 of the rotating shutter. The result that the shutter 1 is moved along the guide rails 7 and 8 up or down, uvelichivau in the channel. In this case, the inner cavity 4 of the bolt 1 is filled with water up to the maximum capacity. The shutter 1 is fully immersed in water, changing the flow area for the passage of a minimum amount of water.The number of completed revolutions of the shutter during the passage of water can keep track of water consumption for each section of the channel. For this purpose a horizontal axis of rotation 2 is connected with a counter flow of water 9.When water intake is carried out on the section of the channel to the gate, there will also drop in water levels H. As a result, the shutter 1 will rotate in the opposite direction, passing water from the lower section of the channel at the top. This allows you not to dump water from the lower section of the channel, and use it for irrigation and thereby to reduce the consumption of water used for irrigation. The screw mechanism 10 is used to lift the drum with its maintenance and repair.
Claims1. Device for regulating the level of water in the waterworks, including wodoslawsky shutter, horizontal axis of rotation and an orifice for air and water, characterized in that wodoslawsky the shutter is made in the form of a drum with blades, a calibrated hole at back is Naya axis of rotation of its ends secured to the rails with a possibility of free movement in a vertical plane.2. The device under item 1, characterized in that the horizontal axis of rotation associated with counter flow of water.
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.
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.
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.
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.
SUBSTANCE: water-raising unit comprises a chamber with inlet and outlet nozzles, a float with a stem and guides and a water-raising pump. The chamber is equipped with an air valve and an air duct with a check valve for supply of compressed air to the water-raising pump. The float with the stem and guides is arranged in the chamber. The float by means of the stem is communicated with a gate valve installed on the outlet nozzle and has a cover made of ferromagnetic metal, on top of which there is a rubber sealant. On the inlet nozzle there is also a rubber sealant, which jointly with the sealant arranged on the cover, as the float floats, they provide for tight closure of the inlet nozzle, having permanent magnets that fix the float in the upper position after floating.
EFFECT: using the invention will make it possible to reduce volume of transit drain and to reduce number of hydromechanical devices in a water-raising unit.
SUBSTANCE: device comprises a distributing channel 5, an intake pipe cap 2 and a drain pipe. The device comprises a diffuser from composite pipe sections of a conic section, designed in the form of a lock 1. The lock 1 is fixed by means of a hinge on the edge of the channel 5, having a slewing gear in the form of a control wheel 6 with a stopper. The inlet end of the diffuser 1 has the pipe cap 2, the cut angle of which is equal to 6…9° to the bottom of the channel 5. The outlet end of the diffuser 1 is joined with the pipe section 3 of a constant cross section with a flexible hose 4. The curvature radius along the axis of the diffuser is Ro=1.25din, where din - diameter of the intake pipe cap. Operational reliability under conditions of a variable water level in the channel is increased and an effective protection of the lock against wastes and sediments is provided.
EFFECT: improved operational reliability of the device by providing water extraction from different levels.
2 cl, 3 dwg