SU994615A1 - Arrangement for controlling water level - Google Patents

Description

(54) DEVICE FOR REGULATING WATER LEVEL

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FIELD OF THE INVENTION The invention relates to hydraulic engineering and relates to water level regulators of the pools of a hydraulic structure.

A device is known for maintaining the water level in the upstream of a hydraulic structure, comprising a shield with a water outlet made in the form of a siphon 1.

However, in the known device, only one water level of the headwater is automatically maintained.

It is also known to have a device for adjusting the water level in the upstream, which comprises a shield mounted on a flybet with a culvert opening 2.

In this device, the maximum automatically maintained water level of the upstream is set by moving the upper shield relative to the lower limit upwards. In this position of the shields, the height of the device (maintaining the water depth in the upstream) is the greatest. To set the minimum automatically maintained water level in the upstream side, the upper shield is lowered to the lower limit position at which the height of the device is the smallest. However, the latter due to the presence in the device of the lower shield is not

it can be reduced by more than 35% compared with the highest height of the device, which does not allow for the automatic maintenance of lower water levels in the upstream.

The purpose of the invention is to expand the range of automatically maintained headwater water levels.

This goal is achieved by the fact that in the device for adjusting the water level in the upstream of a hydraulic structure, having a shield mounted on a flybet with a culvert, the latter is made with a siphon passed through the aperture and located on the upstream 5 of the upstream and attached to the shield with the possibility of rotation the horizontal axis, the part of the lower branch of the siphon passing through the opening is curved in an arc with its center on the axis of rotation of the siphon.

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FIG. 1 shows the described device, a general view, in section; in fig. 2 - the same, in a position that provides automatic maintenance of a lower water level of the upstream.

The device for adjusting the water level in the upstream of the hydraulic structure has a shield 2 mounted on the flybet 1 with a culvert in its lower part and a siphon 3 located in the upstream. The siphon is passed through a hole in the shield and is rigidly connected to the shoulder 4 of the lever pivotally attached to the shield, and the downstream part of the siphon is curved in an arc with its center on the axis of rotation of the lever. Another arm 6 of the arm is movably articulated with a screw-lift mounted on the shield, which is mounted on the support 7 with the possibility of its cargo screw 8 being vertically moved in the guide 9. A rubber seal is attached to the shield 2 from the upstream along the contour of the culvert hole (rubber) in contact with the walls of the siphon 3. For charging the siphon a shield 10 can be attached to the shield from the downstream if necessary. To discharge the siphon it is fitted with an air-guide tube 11 connected to the upper hour and with the possibility of flooding the siphon inlet end of the tube with water in excess of the level of water 12 in the upstream.

The device works as follows M.

The water level 12 in the upstream, the automatic maintenance of which is provided by the device being described, is set using a screw elevator by means of a corresponding rotation of the siphon 3. When the preset level 12 is exceeded, the water overflow occurs through the siphon ridge and the bucket 10 is filled. the upper side of the inlet end of the air tube 11 is immersed in water, thus preventing air from entering the siphon. This provides a siphon charge by entraining air from the siphon of the air insulated from the atmosphere with a stream of water flowing over the siphon crest and discharging the water with a siphon from the upper pool to the lower one. After the pre-water of the upstream reaches a predetermined level, air enters the siphon through the inlet section of the air tube 11, which discharges the siphon.

The shield 2 in the position shown in the drawing can be fixed in the slot frame, and, if necessary, together with the siphon and screw elevator can be removed from the water course, for example, by raising an additional lift above the calculated maximum water level in the hydraulic structure.

The use of the described device allows to expand the range of auto.matically supported water levels upstream.

Claims (2)

1. USSR author's certificate number 107682, cl. E 02 B 7/18, 1956. 2. USSR author's certificate No. 658216, cl. Е 02 В 13/02, 1978. //////////////////////////////////////////// FIG. f // V /////////////////////////////////////////// FIG. g