SU140374A1 - Device for controlling the flow of water - Google Patents

Description

Devices are known for controlling the flow of water flowing through a culvert, including a sector valve, the axis of rotation of which is located on the lower side, with two radial bearing planes. It is also known to use a pressure chamber with a throttle valve in this device, the maneuvering of which is carried out by counterweights-floats. In this device, the camera communicates with the downstream. The known water gates, however, have the disadvantages of relatively large own weight, and require sophisticated control devices.

In the design of the proposed device, the gap between the gate edge and the curved wall of the pressure chamber is formed by diverging curves, one of which is part of a circle, which automatically maintains the level of water in the BepXHeNL pool by balancing the pressures. The proposed design is advantageously distinguished by its simplicity. The presence of only one valve creates favorable opportunities for automating device control.

FIG. 1 shows a diagram of the proposed device; Fig 2 is a diagram of the valve.

In cross-section, the water control device is in the form of a sector rotating around the bottom joint. The upper corner of the sector is elongated in the form of a cantilever, the dimensions of which are determined by hydraulic calculation. The waterproof carrier sector has only two radial planes m / and .2. At its ends sector has no skin. The compaction sector only has a perimeter of lower radial density.

In this case, seals can be operated only in the lower lowered position of the device. Between the ends of the two remaining sections 140374 2 of the sector surfaces and the side wall of the station, as well as between the edge of the console and the curvilinear surface of the niche 3 of the device, there are gap seals. The niche of the proposed device is constantly communicating with the upper reach. The full hydraulic load (the difference between the levels of the pools) carries only the sheathing along the lower radial plane / sector. The lining on the upper radial plane 2 at the edge of the device does not experience any load. When the device is raised, it carries a load equal to the difference between the headwater and chamber 3. This difference creates a load much less than the total hydrostatic load. The curvilinear surface of the sector in all positions remains unloaded. It is made of through plating and is only directed to it. Thus, the cavity of the sector remains constantly filled with water. The control device of the device is a single gate valve 4, installed on the pipeline 5, which connects the device's niche to the downstream. Opening and closing the valve can be automated by a float device. For this, the throttle is supplied with a counterweight-float 6, massaged into a vertical shaft 7, which has a small hole in the bottom reach and a weir 8 at the level of the normal upper reach horizon. At the level of the upper pool below the normal shaft dry as opposed to holding the throttle in the closed position. As soon as the overflow of water begins, due to the smallness of the hole, water accumulates in the mine downstream. The counterweight-float pops up and opens the throttle. When the flow of water into the mine stops, the counterweight closes the throttle.

The sector gate operates as follows. At the headwater level not exceeding the normal, the valve 4 is closed, and the chamber 3 of the shutter communicates only with the headwater. The shutter is in the lowered down position. As the level of the upstream reaches higher than normal, valve 4 begins to open, and a certain opening of the valve corresponds to each level of the upstream. The water from chamber 3 begins to drain into the lower pool. Through the slot 9, the flow of water from the upstream is limited. By virtue of the difference in the flow of water through the slit and the valve in chamber 3, the pressure drops and a pressure differential forms on the gate console, directed upwards and downwards, and the shutter begins to rise. The slit 5 increases as the shutter is raised. Water flow level;; and the shutter stops. With a further increase in the level of the upper reach, the shutter rises higher until it is completely constipated. The same is obtained when the valve is closed 4. When the level of the upstream reaches or the valve is closed, the differential to the upper console decreases, and the valve, under its own weight, is lowered. The shutter can be made of steel or reinforced concrete.

The proposed device for controlling the flow of water can be used in bottom water outlets: in galleries of navigable sluices, in bottom water outlets, etc. Valves of this type can be used for pressures up to 100 meters or more. Research Institute and agricultural plant The USSR Academy of Sciences in its conclusions appreciated the positively proposed device and noted its originality.

Subject invention

A device for controlling the flow of water flowing through the culvert, including a sector shutter with two radial-carrying carriers and a rotation axis located on the downstream side; downstream pressure chamber

through a pipeline equipped with a valve controlled by a counterbalance float system, characterized in that, in order to automatically maintain the level of water in the upstream by balancing the pressures acting on the gate, the gap between the edge of the gate and the curved wall of the pressure chamber is formed by diverging curves one of which is part of a circle.

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