Water-distribution system for irrigation canal

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

 

The invention relates to agriculture, namely, irrigation systems, and can be used to regulate the supply water flow in the channel-fill with water, providing water intake during movement along the channel.

A well-known system of water distribution in an open channel, including the channel, damaged partition structures on dams, sensors, water levels in dams and external hydraulic connection made in the form of a pipeline, while dam construction made in the form of water-filled containers from an elastic material, and the pipeline is located in the bottom of the channel and communicated with the upper reach of the upper construction, with the cavity of each tank and the lower pools of the structures and channels of level sensors are located in the holes that tells the pipeline to the lower pools of the structures (A.S. 1143800, CL EV 13/00, similar).

A significant drawback of this system is the complexity of the structural design and low efficiency due to long time of perestroika on the required mode of operation (opening or closing a shutter retaining structures) due to the delay wave of outrage from consumer and command the sensor to changes in feed consumption.

Known another system vodorazdelny channel-fill, including the water, is set in the channel dam construction, divides it in pools and in the form of water-filled containers-closures connected with drain through a pipe located in the bottom of the channel, the sensors in water levels in the pools, well located therein a chamber with a drain hole connected to pipelines with the upper tail and the head bolt installed inside the camera, a movable float valve mounted with the possibility of overlapping the drain and piping of the headrace channel, drain the pipes before tanks-valves are installed three-way valves with actuators that interact with the water, and the water level sensors in the pools communicated through a well tubing, located under the channel (A.S. 1565953, CL EV 13/00, prototype)

The disadvantage of this design is the complexity of the structural design and the lack of performance after changing the water until the emergence of a wave of indignation and transmission level sensor to reduce or increase the flow of water through the shutter on the retaining structure.

The technical problem of the invention is to simplify the design and improve performance in the work on mobile water user.

This object is achieved in that the intake unit of water supplied is rigidly fixed at its upper end customitem, across the upper part of the flow of water and related across the remaining part of the flow of water elastic spherical shell, equipped with a balancing device, placed on the contour and connected with a flexible coupling with the initial part of the intake device, the outer side of the intake device fixed hollow body which contains a level sensor, made in the form of a float with vertical stand having at one end two parallel spaced contact rod connected with the power source and interacting in a horizontal plane with trolley wires, fastened to the supporting racks placed on the berm of the channel distributor for its entire length, and trolley wires are connected with the power source via the spring-loaded contact pins placed at the water intake device, the block of acceptance and the unit time delay with sensor control gate, and a movable float is connected with the shutter kinematic relationships, in addition the mobile water is supplied software device adjusting the position of the height of the diversion device.

Thanks to the supply of water to the consumer device is rigidly fixed at its upper end part of the shield and associated with dam on the remaining part of the flow of water elastic spherical shell, equipped with a balancing device, placed on the contour and connected with a flexible coupling with the initial part of the intake device, due not only to the health of construction dam construction in the movement of water intake device, but also eliminates a number of dam structures located on the channel-fill, which greatly simplifies the design of the water distribution system and construction of the dam structures. In addition, the set of distinctive features allows to cut back the volume of water that will significantly reduce the consumption of water and labor for irrigation.

These distinctive signs and any resulting positive effect is not known either in the analog or in the prototype.

The securing hollow body on the outer side of the intake device that hosts the level sensor is made in the form of a float with vertical stand having at one end two parallel spaced contact rod connected with the power source and interacting in a horizontal plane with trolley wires, fastened to the supporting racks placed on the berm of the channel distributor for its entire length and connectivity trolley wires from the power source through padpr zhinennye contact pins, posted on intake device, the block of acceptance and the unit time delay with sensor control gate and the kinematic connection of the rolling float shutter allows you to ensure the performance of the device, as eliminated the delay wave of outrage from consumer in connection with the location of the level sensor directly at the intake of the device, additionally, the conversion of a hydraulic signal level changes in electric and its transfer through the block time delay in the sensor head of the bolt will allow you to reduce the shutter speed when you change the water in the channel-fill. This positive effect, due to the above combination of distinctive features, is not known either in the analog or in the prototype. In addition, the proposed set of units and parts, and the relationship eliminates a number of parts and components known in the analog and the prototype, which greatly simplifies the design in comparison with the known analogue and prototype.

Supply of mobile consumer software device adjusting the position of the height of the diversion device will provide, regardless of the change of the slope of the channel-fill, the location of the water intake device at a constant height from the bottom of the channel-fill, h is about will significantly improve the accuracy of water level control the water intake device during the movement of the water consumer. These distinctive properties and achievable positive effect is not known in the analog and the prototype.

The invention is illustrated the circuit diagram of the water distribution system on the channel-fill.

Water distribution system on the channel-fill includes a channel-fill 1 with the head bolt 2, a sealed chamber 3 with a movable float 4 chamber connected with the upper reach 5 and drain 6 via a three-way shut-off element 7 that is installed in the inlet line 8, the sensor 9 of the locking element 7, a mobile water from the water supply device 10, dam construction in the form of a flexible sheath 11, the water level sensor 12, the intake device 10 of the water supplied is rigidly fixed at its upper end part of the shield 13, across the upper part of the flow of water and related across the remaining part of the flow water elastic spherical shell 11, equipped with a balancing device 14 placed on the contour and connected with a flexible coupling 15 with the initial part of the intake device 10, the outer side of the intake device 10 is fixed hollow body 16 where the level sensor 12, made in the form of float 17 with vertical stand 18 having at one end two parallel spaced ontactnig rod 19, 20 associated with the power source 21 and interacting in a horizontal plane with trolley wires 22, 23, fixed on the supporting pillars 24, placed on the berm of the channel allocator 1 throughout its length, and trolley wires are connected with the power source 21 via the spring-loaded contact pins 25, 26, posted on intake device 10, block acceptance 27 and the unit time delay 28 to the sensor 9, the control gate 7, and a movable float 4 is connected with the shutter 2 by using the kinematic relations 29, except that the mobile water is supplied software device regulatory provisions the height of the diversion device (not shown).

Water distribution system on the channel-fill is as follows.

Before you begin mobile consumer intake device 10 is lowered into the channel distributor 1 to the preset value by keeping the height (gap) the location of it from the bottom of the channel of the distributor 1 is included in the software, and the device controlling the position of the height of the diversion device 10, which is consistent with the slope of the channel-fill 1. Then, you install the support struts 24 and mounting trolley wires 22, 23 on the berm of the channel distributor for its entire length, and then is attached to the s to the power source 21, located in mobile cooperable, spring contact terminals 25, 26 and block acceptance 27 unit time delay, and contact terminals 19, 20 of the level sensor 12.

In the absence of water in the channel-fill 1 float 17 level sensor 12 is in the down position, which provides a circuit closing contact rod 19 with the trolley wire 23 and the engagement block of acceptance 27.

The unit time delay 28 provides a pulse signal to the sensor 9 of the locking element 7, which produces a momentary opening of the discharge from the sealed chamber 3. This provides a lower level in a sealed chamber 3 and the lowering of the rolling float 4 down, causing, using the kinematic relations 29, priotkrytye head bolt 2 and the connection of the upstream 5 channel-fill 1.

The incoming water of the upstream 5 channel-fill 1 impact velocity pressure on the elastic spherical shell 11, causing the acceptance forms section of the channel-fill 1 and the balancing device 14 and a flexible connection with the initial part of the intake device 10, although the water pressure exerted on the shell 11, it provides a stable position and creation of the required overpressure of water at the intake of the device 10.

The unit delay time 28 generates periodic pulses is snye signals, what contributes discrete opening of the shutter 2 as long as the value of the open shutter 2 will not provide the required water flow rate required to install the specified level in the channel-fill is 1, the intake device 10.

Set the water level in the channel-fill 1 causes lifting of the float 17 level sensor 12. In this connection strut 18 with the location of the contact terminals 19 and 20 is lifted up, providing the circuit with the power source 21. The block of reception and transmission halts the supply of the pulse signal in the sensor 9. As a result, the level in the sealed chamber 3 stops to change, which helps keep the shutter 2 in this position. Circuit contact terminal 19 is the enable signal to the mobile consumer, which causes a drop in the level of the water intake device 10, which leads to further (as formulated above) discrete opening of the shutter 2 to establish a specified level at the intake device 10, i.e. in this case the value of the shutter 2 are set to pass flow from the upper reach 5 corresponding to the flow rate of water intake mobile consumer.

When the water level increase in water intake device 1 is an ascent of the float 17 level sensor 12 upwards, causing the circuit C is PI contact rod 20 with the trolley wire 22 and the power source 21. Block of acceptance 27 turns on and the unit time delay 28 generates a periodic pulse signal in the sensor 9 of the locking element 7, which in turn produces a momentary connection of the upstream 5 sealed chamber 3 through the inlet pipe 8. The incoming water in a sealed chamber 3 causes a rise in water level in it and the rise of the rolling float 4 which by means of kinematic linkages 29, acting on the shutter 2, prescribed it. Discrete pisacreta shutter 2 will be up until the level of the water intake device 10 and the set specified value. In the event of termination of abstraction (for technical reasons) mobile water user selectable pisacreta will be performed prior to full closing of the shutter 2 and stop the flow of water out of the upstream 5 channel-fill 1. As a result, in the channel-fill 1 level set specified value, and the system will be in originalna mode to switch off the mobile consumer. The inclusion of mobile consumer will cause the repetition of cycles of operation of the water distribution system.

The implementation of the proposed water distribution system on the channel-fill will reduce operating costs by 20-30%, reduce water consumption for irrigation SEL is kohozyaystvennyh crops (15-20%) minimize back volumes of water that will simplify the design of water distribution on the channel-fill and reduce the capital cost of 12-18% for the construction of irrigation systems.

Water distribution system on the channel-fill, including the channel-fill with the head shutter, a sealed chamber with a movable float chamber connected with the upper water and drain through a three-way shut-off element, installed in the supply line, the sensor control shut-off element, the mobile water from the water supply device, dam construction in the form of an elastic membrane, the water level sensor, wherein the intake unit of water supplied is rigidly fixed at its upper end part of the shield, that cuts off the upper part of the flow of water and related across the remaining part of the flow of water elastic spherical shell, equipped with a balancing device, placed on its circuit and connected with a flexible coupling with the initial part of the intake device, the outer side of the intake device fixed hollow body which contains a level sensor, made in the form of a float with vertical stand having at one end two parallel spaced contact rod associated with IP is the source of power and interacting in a horizontal plane with trolley wires, mounted on the supporting pillars placed on the berm of the channel-fill along its length, and trolley wires are connected with the power source via the spring-loaded contact pins placed at the water intake device, and the block of acceptance, and the unit time delay from the sensor to the control gate, while the movable float is connected with the shutter kinematic relationships, in addition the mobile water is supplied software device adjusting the position of the height of the diversion device.



 

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