SU941947A1 - Device for automatic controlling of water level downstream - Google Patents

Description

The invention relates to hydraulic engineering and can be used to maintain a constant predetermined water level in the downstream of the tubular outlets in the daily regulation pools, channels and rice systems. .

A device for automatically adjusting the level of water in a flume channel is known, which contains a housing with a lid and a spring-loaded diaphragm latching element placed in the pipeline, which is connected through an opening and a telescopic curved tube with a float valve at the end with the bottom 1.

However, this device has a low reliability with small drops, as part of the pressure is not productively used to overcome the force of the spring of the membrane locking element, and also part of the differential is lost to the vertical position of the pipeline, thereby limiting the use of the device. Another disadvantage of this device is that the formed cavity is closed by a membrane and the cover facilitates the accumulation of deposited sediment. To resume operation, the device must be removed and dismantled.

Closest to the invention is a structure made in the form of a hollow, water-displaced gate with a horizontal axis, in the KOTOpoixt cavity, a hydraulic system with a valve is installed, connected to the upper and lower reaches and a dual siphon. On the pressure face of the shutter, a calibrated bore 2 is made.

15

However, in the known device, the flow transports suspended sediments that silt a closed cavity (up to 12%), which requires additional operating costs and

20 working time to clean the cavity shutter.

In addition, the limited use of a valve on tubular outlets with large fluctuations in the water level of the upstream is due to the height of the gate.

The purpose of the invention is to increase reliability, simplify the operation of the device and expand the scope of application.

The post & Lnva chain is achieved by the fact that in the device for automatic regulation of the water level in the pool, there is a water outlet located between the upper and lower pools, a hollow eatao installed above the water outlet on the horizontal axis of rotation, in the plane of which a valve is installed that is connected to the sensor of the lower pool. , the shutter is made in the form of a knee of a flexible shell, one of the bases of which is mounted on the lever arm, placed on the go (Rizontalny axis of rotation, on the other arm of which a counterweight one branch pipe of the valve knee is provided with a flexible diaphragm, to which a rigid center is attached, and the other base of the knee is made in the form of an annular diaphragm connected to a valve installed on a horizontal bi-rotation.

The drawing shows a diagram of a device for automatically adjusting the level of water in the downstream with a tubular water collector.

The device for automatic water level control in the downstream consists of a hollow valve 1 in the form of a knee, the inlet pipe 2 is rigidly attached to the lower part, the flexible diaphragm 3 is attached to the upper part of the knee around the perimeter, and the other edge of the diaphragm is attached to the crystal 4, which mounted on a horizontal axis 5 of rotation. The gate inlet is equipped with a flexible diaphragm 6, to which a rigid center 7 is attached, with ribs 8 applied to it, there is an inlet 9 in the lower part of the diaphragm. The weight of the bolt 1 is rigidly attached to one shoulder of the steering wheel 10, In this manner, the shutter 1 can be rotated around a horizontal axis 12.

The valve inlet 2 is adjacent to the outlet tip 13 of the pipework 14, through which water flows from the upstream 15. In the downstream 16. A level sensor 17 is installed, connected via pipe 18c with an outlet 19. There is a plunger 20 for air inlet to click 4 from shutter 1.

A device for automatically controlling the level of water in the downstream works as follows.

As the water level in the downstream 16 rises, the sensor 17 closes the outlet 19, as a result of which water from the cavity of the valve 1 stops. Through the inlet 9, water enters the valve 1, fills it and creates an increased pressure.

Since the area of the living section of the pipeline 14 is equal to the area of the flexible diaphragm 6 with a rigid center 7, the working area of the diaphragm 3 creates an additional pressing force to the shutter and it closes. When the flow of water into the lower pool 16 is reduced, the float of the sensor 17 is lowered and the outlet 19 is opened.

As water flows out of the valve body, the pressure decreases, the hydrostatic pressure from the upstream side acts on the pressure face 6, and the shutter 1 turns around the axis 12, water flows from the pipe 14 between the outlet tip 13 and the inlet 2 along the entire perimeter.

Moreover, the shutter 1 is balanced by a counterweight cargo 11 so that it opens at a minimum headwater head 15.

When the shutter is rotated, the diaphragm moves, on the one hand it requires lengthening, on the other hand it becomes unnecessarily long, but since the pressure on the area of the diaphragm 3 spreads evenly, the diaphragm moves as the cover 4 rotates around the axis 5, self-correction occurs. t Since the water has suspended sediments, they enter the cavity of the shutter 1 through the inlet 9 so that the sediment does not settle and the silting of the shutter 1 does not occur, it is provided that the flexible diaphragm b with a hard center 7 with ribs 8 applied on it, which is brought into oscillatory motion by the water leaving pipe 14.

The advantages of the proposed device are that it reliably works at both minimum and maximum headwater headings, regardless of the level of the lowwaters. The device is easy to operate and eliminates silting, which does not require additional operating costs and working time.

Claims (2)

1. (after having received the blessing of the USSR I 334329, class B 32 V 13/00, 1970. 2. Atatofokoe certificate of the USSR 615170, cl. B 02 B 13/02, 1976 (prototkp). / W y sV / AV / // "4 VKV X 77 / CV7A4 7 .J vv h y V / Wi / 4 7 8/3 gfe№