SU805265A1 - Head water level controller - Google Patents

Description

(54) TOP LEVEL REGULATOR

one

The invention relates to hydraulic engineering and can be used in hydraulic structures as a device for adjusting the water level of the upstream in irrigation canals.

A device is known that performs the function of regulating the water level in the downstream of a hydraulic structure.

The device includes a shutter fixed on the horizontal axis of rotation. The internal capacity of the shutter communicates with the headwater through a hole on the pressure face. In addition to the shutter axis, another tank is rigidly fixed with a hole for water intake into it. For structural strength, the bolt and this container are interconnected by rigid th. The tank is located in a chamber connected to the headwater by means of an opening for the entry of water into the chamber. In both tanks, air is continuously supplied from the generator through the hoses. The float of the water level sensor is connected to a membrane which, by means of a tube filled with liquid, controls two other membranes regulating the flow of air exiting the openings of the containers. The float is fixed on the brush.

with which the level in the upstream 1 is changed.

The disadvantages of the known device is its structural complexity, metal consumption, a significant narrowing of the channel cross section: in addition, the device has a delay in response. The design complexity is due to the large number of sensors, the presence of a large length of pipelines for signal transmission, the presence of a source of compressed air and a chamber for it.

Claims (3)

It is also known to have a device for adjusting the level of water in an irrigation canal, which is a shutter, the housing of which is a chamber of a hydraulic power amplifier. The hull communicates with the upper reach using the inlet manifold, and the lower one communicates with the outlet nozzle. Between the ends of the inlet and outlet nozzles, located at a certain distance from each other, there is a valve connected by a hard rod to a float placed in the float chamber. The float chamber communicates with the upper reach hole 2. The disadvantages of this design are the structural complexity, the intensity of the metal, the presence of delay, the reduction of the working channel section of the channel. Structural complexity due to the presence of a large number of holes, seals. Closest to the proposed technical entity is the upstream level regulator containing a frame and a shield mounted on the axes of rotation, as well as a flexible shell connected to the frame and a beam installed across the channel. In order to limit the movement of the shield towards the downstream The bottom of the watercourse is set to threshold 3. The disadvantages of this device are its low throughput, structural complexity, and also the rotation of the shield in the direction of the pumps. With a significant accumulation of pumps, the lower head does not work and the structure goes out of order. In general, the device has low reliability. The purpose of the invention is to increase the capacity of the regulator, improve the flow of accumulated pumps, simplify and increase reliability. The goal is achieved by the fact that the regulator contains a lever, one end of which is pivotally connected to the frame, and the other end is mounted in rails mounted on a shield made with a V-shaped cross section. FIG. 1 shows the upstream level control, operating position; in fig. 2 - the same, closed position; in fig. 3 - the same, open position. The upper pool level controller contains a flexible shell 1, which is attached by an upper edge to frame 2, and the lower edge to horizontal beam 3 fixed rigidly across the stream. The frame 2 is mounted on axis 4. Levers 6 are attached to the lower end of the frame by a hinge 5. The other end of the levers 6 is hinged in guides 7 mounted on a shield 8 rotating on an axis 9. The shield 8 has a V-shaped cross section. The lower part of the shield has fairings 10. The device operates as follows. While maintaining the normal level, the shield 8 closes the drain hole (figure 2). With an increase in the level in the upper reach, the flexible shell 1 raises the frame 2. In this case, the force through the levers 6 is transmitted to the shield 8, which opens the bottom hole and the hole between the top of the shield 8 and the beam 3. The lower part of the shield 8 is rotated towards the lower reach and sediment is washed away unhindered. The flow coming from the upper opening collides with the bottom flow, which greatly improves their mutual thickening. With an increase in the flow rate, the bottom and upper openings open more significantly (Fig. 3) and reset the lower flow to the lower reach, after which parts of the structure return to their original position. The use of the proposed device increases the capacity of the regulator and greatly facilitates the work in the presence of sediment in the flow. In general, the design is more reliable in operation and operation and can be used with a large range of regulation. Claims An upstream level regulator containing a frame and shield mounted on the axes of rotation, as well as a flexible shell connected to a frame and a beam mounted across the channel, characterized in that, in order to simplify and improve the reliability of the regulator, it contains a lever , one end of which is hingedly connected to the frame, and the other end is mounted in guides mounted on a shield made with a V-shaped cross section. Sources of information taken into account during the examination 1. USSR author's certificate No. 379736, cl. E 02 B 13/02, 1971. 2. USSR author's certificate number 391539, cl. E 02 B 13/02, 1971. 3. USSR author's certificate number 628212, cl. E 02 B 7/02, 1975 (prototype). TUUHH //// ///