Drainage system

 

The invention relates to agriculture and can be used in drying the reclamation of land. The drainage system includes drains, collector, pressurized storage capacity, equipped with inlet and the spout and divided between two insulated from each other cameras that are hydraulically interconnected with a vacuum device. The upper and lower chambers are interconnected by additional vacuum devices in the form of tubes with calibrated holes, and at least one of them is made with a calibrated capillary opening positioned below the upper edge of the main vacuum in the upper chamber, and is released under the water level in the lower chamber above the lower edge of both primary and additional vacuum devices. The technical result of the invention is to improve the reliability of the drainage system, the acceleration of the drying process by providing reliable charging vacuum devices for pulsed flushing cavity drainage pipes from muddy sediments, including at very low costs flowing water. 1 Il.

The invention relates to agriculture and can the East deposits, and for the dewatering process.

A device intended for installation in a similar drainage systems, which contains the upward part of the siphon pipe and the downstream section of the siphon, made in the form of tubes. Each tube descending part of the siphon is placed within the ascending part of the siphon, made in the form of an overturned glass, and provided with a calibrated hole (patent RF № 2138698, 6 F 04 F 10/02, 1999 - equivalent).

The disadvantage of this device is that it cannot charge with a minimum expenditure inflow (from 0.001 l/s or less), which reduces the reliability of the system in which it is used.

Known drainage system, which includes drains, collector, pressurized storage capacity, provided with a suction inlet, a drain outlet and a vacuum device, and the capacitance between the input and the spout is divided into two insulated from each other cameras that are hydraulically interconnected with a vacuum device, made of a collapsible, which is mounted for movement relative to the camera capacity (USSR author's certificate No. 1630344, E 02 In 11/00, 1989-prototype).

The disadvantage of this drainage system is the water in the reservoir, also required in the presence of water flow through it to the upper chamber, and the flow rate of the flowing water must be not less than a certain value, depending on pipe diameter vacuum device. Otherwise, water will flow through the upper section of the pipe, not capturing the air bubbles from the top of the camera, and the device will not be able to be charged up until the water flow rate will not increase to the desired value.

However, drainage systems operate in a wide range of costs allocated water, and the share of low inflow accounts for the largest part of their employment period. There is a clear need to improve the vacuum device to ensure reliable charging for all, including very low costs flowing water.

The invention solves the problem of increasing the reliability, acceleration of the drying process by providing reliable charging vacuum devices under pulsed flushing cavity drainage pipes from muddy sediments, including at very low costs flowing water.

The technical result is achieved by the fact that the drainage system, including drains, collector, pressurized storage capacity, supplied the automatic interconnected by a vacuum device, supplied with additional vacuum devices in the form of small diameter tubes with calibrated holes, and at least one of them is made with a calibrated capillary bore below the upper edge of the main vacuum in the upper chamber and is released under the water level in the lower chamber above the lower edge of both primary and additional vacuum devices.

The features that distinguish the proposed drainage system from closest to it (the prototype) is the existence of an additional vacuum devices in the form of small diameter tubes with calibrated holes, and at least one of them is made with a calibrated capillary bore below the upper edge of the main vacuum in the upper chamber and is released under the water level in the lower chamber above the lower edge of both primary and additional vacuum devices. The introduction of an additional vacuum devices such installation in the system allows manual charging device with a very small flow of water from the reservoir (less than 0.001 l/s). The possibility of charging depends on the diameter of the tube (the smaller the diameter, the less the flow rate), so the air from the upper chamber to sleep in the upper chamber of the device, created by the outflow of air through a small tube to increase the flow of water from the reservoir and allow to charge the main pipe and to carry out washing.

The drawing shows a drainage system, a section along the axis of the collector.

The drainage system includes drains 1, header 2, sealed cumulative capacity, equipped with inlet and drain pipes. Between these nozzles capacity split sealed by a partition into an upper 3 and lower 4 cameras connected to one another through hole (with insulation around the perimeter of the vacuum devices: basic, in the form of a segment of the pipeline 6, and starting in the form of small diameter tubes with calibrated holes for the entrance of water in them (7, 8). At least one of them (8) has a capillary cross-sectional area with a diameter of 2 to 5 mm), and the other dimensions of 1 cm and more. The upper chamber of the storage tank 3 through the inlet pipe is hermetically coupled to the mouth of the collector 2, and the lower chamber through the drain pipe is connected with sbresny pipeline 5, placed in a water body, for example the channel.

Tube 6 and tube vacuum pad devices released in the lower chamber so that the exit was located below the drain pipe. This outputs

The top of the pipe 6 is small (about 1-2 cm) excess over the required level of flooding of the reservoir 2, and the top of all of the launch tubes brought to ceiling camera and cut at an angle of 45.

Drainage system operates as follows. In the period of excessive moisture filterable from the soil water drains 1 and the collector 2 is supplied to the upper chamber sealed storage capacity, gradually filling her. If at the bottom of the camera there is no water, the air from the upper chamber freely displaced by connecting the two camera tubes in the atmosphere. When the water level in the upper chamber reaches an orifice in the capillary tube 8 and it will act inside the last, below the hole due to wetting forces immediately formed a water tube held meniscus forces. A further rise of the level in the upper chamber will cause a gradual increase in the length of the tube, until, finally, its weight does not exceed the holding force. After this, the tube will start to move downwards, gradually accelerating and increasing its length, due to water flowing through a calibrated orifice. When the water flow rate, exhaust tube, will exceed the flow coming through the hole in the cross-section of the tube. As a result, the flow will be interrupted, in the upper part of the water tube is formed another meniscus, and the movement of the water tube will slow down. Meanwhile, coming through a calibrated orifice the water forms a new water tube that overlaps the included air, creating a bubble, and the cycle repeatedly again, resulting in the capillary tube will be water-air mixture flow.

Flowing from the capillary tube, the water will gradually fill the lower chamber to a level at which the output from all other pipes shall be flooded with water, and the flow of air in the upper chamber will cease. Now capture air flow in the capillary tube will be accompanied by a decrease in its pressure and, accordingly, the water level in the chamber. When he will block a calibrated orifice in the tube of larger diameter 7, she after a short flow of water through the walls of the charged and will become more intense to take the air. The result will soon be charged the next tube, and then all the tubes together will charge pipe main vacuum device 6, and after removal of the upper chambers of the remaining air will take only water.

If the lower chamber to begin charging was Zapala to be forced out through the pipe 8 into the atmosphere, as a way out of it submerged in water less than others, and then the charging process will be similar to that described above.

The advantage of the proposed design compared to the prototype is that at relatively little additional cost to the launch pad vacuum devices they allow to obtain new quality: almost to minimize the influence of the flow rate of the flowing water in the process of charging the main. Moreover, if vacuumized system, the reservoir 2 is filled so that the water level in the upper chamber is near an orifice tube 8, the charging process can begin even in the absence of flow due to a strong drop in atmospheric pressure. Therefore, unlike the prototype, which are involved in the work only during periods of significant excessive moisture in the proposed design the entire volume of water flowing through the manifold for the season, will be led in pulsed mode.

It is also important, and the fact that the charging rate and its duration can be controlled by changing the number and diameters of the starting vacuum devices.

Claims

Drainage system, including drains, reservoir, seal technics is installed from one another camera, hydraulically interconnected with a vacuum device, characterized in that the upper and lower chambers are interconnected by additional vacuum devices in the form of tubes with calibrated holes, and at least one of them is made with a calibrated capillary opening positioned below the upper edge of the main vacuum in the upper chamber, and is released under the water level in the lower chamber above the lower edge, as the primary and secondary vacuum devices.

 

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