SU928310A1 - Head water level regulator - Google Patents

Description

The invention relates to hydraulic construction and can be used on irrigation systems to automatically maintain the upstream level and control the flow.

The known shutter, made in the form of an elastic closed shell and shield mounted on the flybet, the shell cavity is connected to the upper and lower tails flj.

The disadvantages of this shutter are the possibility of sediment deposition in the cavity of the shutter, the need for significant differential levels, the complexity of the design.

The closest technical solution to the invention is a device for regulating the water levels in the channels, including a hollow closure with a horizontal axis of rotation, sensors, a valve and a source of compressed air PJ.

A disadvantage of such a device is the possibility of water B entering the siphon and the atmosphere-related pipe, and increasing the length of the pipe proportionally increases the resistance and reduces the suction coefficient.

The purpose of the invention is to increase reliability by controlling the device when the level is changed using 5 air.

The goal is achieved by the fact that in the upper level regulator, a shutter, the cavity of which is pivotally mounted on the flybet by the shield and the flexible shell associated with it, and the float level sensor of the upstream, is contained in the upper bundle of the variable volume of the bell tower. type with a float level sensor installed in it and a float valve installed on the first pipeline, by which the air CAPACITY of the kolny type container is connected to the cavity of the valve, Anna exhaust line with the atmosphere, in which the valve is mounted, the cavity of which is bonded the second conduit svozdush25 hydrochloric cavity bell-type container to which the inlet pipe is mounted shut-off element which is kinematically coupled with a float level sensor of the upstream, the float

Claims (2)

30 a headwater level sensor and a float valve are installed with a boom VioHCHOCTbro movement along the guides. In FIG. 1 shows the device when skipping the estimated flow; in fig. 2 - the same, when the water level in the upstream reach is higher than that calculated in FIG. 3 - the same, with a decrease in level; in fig. 4 - the same general view. The upper bay level regulator contains a gate consisting of a flexible shell 1 and a shield 2, which are hingedly connected with a flybet, forming a working cavity 3 ,. connected with the first 4 and second 5 pipelines with a bell type b tank, inside which guide 7 with a float is located, the upstream 8 level gauge and guide 9 with a float valve 10. On the inlet 11 of pipe 5 a stop valve 12 is installed, and the air inlet 13 is closed by a valve 14. The aperture 15 of the pipe 4 is closed by a float valve 10. The pipes are provided with valves 16 and 17. The bell-type tank has a notch 18 to change the useful volume yvaemy movable shield 19. On line 5 is installed in the cavity gate valve 20, opening 21 perekrshayuschy inlet conduit 22 connecting the valve chamber 3 to the atmosphere. The device works as follows. When the water level rises in the upstream side, the air is expelled from the bell type 6 tank through the hole 15 through the pipe 4 into the cavity of the shutter 3 formed by the flexible shell 1 and the shield 2. At the same time, the nozzle 11 and hole 13 are closed. Excess pressure in cavity 3 causes the shield 2 to rise and closes the valve 20 blocking the opening 21. Raising the water level in a tank of the b-type type causes the float sensor of the upstream 8 to rise along the stem 7 and the float valve 10 along the stem 9. When the calculated level is reached the float 10 closes the opening 15 and the air in the cavity 3 is stopped (Fig. 1). An increase in the level above the calculated level causes a further rise of the float sensor of the upstream 8, turning of the locking member 12 and opening of the opening 13. The remaining air from the bell type tank b through the pipeline .5 is fed into the valve 20 and lifts it, opening the opening 21. Air the excess pressure from the cavity 3 through the conduit 22 enters the atmosphere; the shield 2 is lowered under the action of the hydrodynamic pressure of the flow. In the upper pool, a decrease in level occurs (Fig. 2). The valve 14 closes the opening 13 and serves to admit atmospheric air into the float chamber and is put into operation with the nozzle 11 closed with a further decrease in the level (Fig. 3). In order to change the Useful volume of the bell type b tank or to change the adjustable level in the upper pool, there is a hole 18 on the float chamber, covered by a movable shield 19. To skip the transit flow, close the valve 17 on the pipeline 4 and regardless of the water level in the float chamber, shield 2 does not rise. With the valve 16 closed on pipeline 5, the device operates (naturally in a certain range) as a flow regulator. The device satisfies the main tasks of water distribution on irrigation systems, and can operate at minimum level differences. Improving the efficiency of adjusting the level of the upstream allows you to reduce operating costs by 23 times. The invention of the upstream level regulator, comprising a shutter, the cavity of which is formed by a shield hinged on a flybet and a flexible shell associated with it, and a float sensor of the upstream pool, which, in order to increase reliability, contains a variable volume bell type tank installed in the upstream with a float level sensor installed in the upstream and in a floating valve installed on the first pipeline with which the tank’s air cavity is bell About the type communicated with the valve cavity, connected with the atmosphere by the exhaust pipe, on which the valve is installed, the cavity of which is connected with the second pipe to the air cavity of the bell-type tank, on the inlet pipe of which is installed a stop valve, kinematically connected with the float gauge of the upper level Eph, the float level sensor of the upper bay and the float valve are mounted for movement along the guides. Sources of information taken into account in the examination 1. USSR author's certificate 651081, cl. E 02 B 7/48, 1973. 2. Authors certificate of the USSR W351966, class .. E 02 B 8/06, 1970 (pro-, totip). . ifGREG . / fMf}) i 7 ff / KyymKyyy / №ff m (