SU687172A1 - Device for regulating water level in reaches of hydroengineering construction - Google Patents

Description

(54) DEVICE FOR REGULATING WATER LEVEL IN THE HYDRO-TECHNICAL CONSTRUCTION COATS

one

The invention relates to hydraulic engineering, in particular, to devices for regulating the level of water in irrigation canals of irrigation systems with cascade flow control and can be used to equip a blocking water outlet and catchment structures.

A device is known for adjusting the level of water in the pools of a hydraulic structure, including a discharge port, a gate, float gauges of the level of the upper and lower pools associated with the source of pressure 1.

Such a device, however, has great inertia.

The purpose of the invention is to increase the speed of the device.

This is achieved by the fact that the closure is made in the form of a bellows, the cavity of which is connected to a pressure source, the latter is made in the form of an ejector connected to the upper and lower pools and connected to the lower pools by means of a siphon.

The drawing schematically shows the proposed device.

The device for adjusting the water level consists of a shutter 1, made in

as a flexible water-filled element having rigidity in the transverse direction, for example, a bellows, which is attached at one end to frame 2. Frame 2 is rigidly embedded in the inlet tip 3

discharge pipe 4. Valve 1 with a throttling pipe 5 is connected to a pressure source, for example, ejector 6, which is located on connecting pipe 7. Pipe 7 is connected to a siphon 8, equipped with an air inlet pipe 9. In the downstream 10, a pipe 11 is mounted on the pipe 7 and an adjusting chamber 12 with an opening 13 overlapping the membrane valve 14. With the latter by means of a fluid filled fluid

The hose 15 is connected to the float sensor 16 of the downstream level 10 or the float sensor 17 of the upstream level 18 (when adjusting the upstream level). Inside the shutter 1 has a flexible perforated hose 19 connected to the throttling tube 5.

Float sensors 16 and 17, which regulate the water level in the upper 18 and lower 10 pools, as well as the diaphragm valve 14, are of known design.

il | iii perx.iiipoiiaHnn | |) sun) L1) 1 i-s lower bay (|) e I) us | |) real estate |) works as follows: the initial position is the water level in the upper bay 8 below the upper limit position D valve II

OPEN1 | T.

When the water level in the lower (j) e 10 lowers to the set point, the float sensor 16 lowers and acts on the membrane 1P) 1Y valve 14, which is oTKpbHsaeT 1И) P: opening 13 of the regulating chamber 12, and water begins to flow through The connection pipeline 7 from the upper 18 downstream to the downstream 10. In the ejector 6, in the connection zone of the throttling tube 5, a vacuum is created, and as a result of this, as well as through the action of the bellows of the hydrostatic pressure, water flows from the bellows 1, last , sokranuiHCb, opens the entrance to the water in the pipe 4, through which it enters the bottombean. The water level li nppee the bute rises and, when 1 is reached a given float sensor 16, acts on the diaphragm valve 14, closes the outlet 13, as a result of which under the action of the nanor the water enters the sytem 1, which expands the water inlet downstream.

When the lowering of the water level and the bottom beat is repeated each time, the described process is repeated.

With a new water level above the 1111 level in the upper b1 h), the siphon 8 starts to operate above the limit position A due to the flooding of the air inlet and the resulting vacuum in it. Water siphon begins to flow into the downstream. Then E; the work involves an ejector and a bellows allows access to water through pipe 4 to the lower pool. The position of the water level in the downstream in this case does not affect the operation of the device.

When the water level in the upstream is lower than the limit position A by means of an air supply for the phey pipe 9, the siphop 8 is diluted. Bellows 1, expanded.

interrupts the flow of 15ody but pipe 4, to the lower reach. In the case of smooth water in the upstream, the float sensor 17 is set to a predetermined position by adjusting the length of the rod. When the water level is reduced 11, the float sensor 17. influences the diaphragm valve 14, closes the outlet 13 and the bellows closes the water access to the downstream through the pipe 4. When the water level rises, the float sensor 17 through the membrane K.ianan 14 opens the inlet 13. With an ejector 6 bellows 1 allows water to reach the lower reach of the pipe 4. The water level in the upper reach decreases.

Clearing of sediment into the bellows 1 can be skipped with the help of a flexible perforated hose 19 when the shutter is opened.

Introduction of a float sensor in the upper pool to the siphon device allows the water level in the upper pool to be adjusted and its upper limit to be limited, which makes the device more upscale.

Claims (3)

1. A device for adjusting the level of water in the pools of a hydraulic structure, including a discharge port, a shutter, float gauges of the upper and lower pools, associated with a pressure source, characterized in that, in order to increase speed, the shutter is designed as a bellows, the cavity of which connected to a source of pressure. 2. A device according to claim 1, characterized in that the pressure source is made in the form of an ejector connected to the upper and lower pools. 3. A device according to claim 1, characterized in that the pressure source is connected to the lower pool by means of a siphon. Sources of information taken into account 1. USSR author's certificate No. 257785, cl. Е 02 В 13/02, 1968 (prototype).