SU623188A1 - Device for regulating water rate-of-flow in hydroengineering structures - Google Patents

Description

(54) DEVICE FOR REGULATING WATER CONSUMPTION IN HYDRO-ENGINEERING FACILITIES

The invention relates to devices for controlling the flow of water in hydraulic structures and can be used on artificial and natural watercourses.

A device for controlling the flow of water in hydraulic structures is known, made in the form of a supporting structure, including shells installed one on another of elastic material, on the top of which there is a rigid shield 1.

A disadvantage of the known device is the low efficiency of extinguishing the energy of the stream passing into the lower pool and the kinetic energy pouring over the device with a sick patient, for which quenching tampers are arranged.

In addition to TOFo, a pumping station device is needed for filling and emptying casings, which makes the construction energy-consuming.

In order to optimize the efficiency of quenching the energy of the stream passing into the lower bay (|), elastic cylinders are located between the shells, forming water-passage slots, the upper shell can be fixed by a system of cables, and the shells and elastic cylinders can be made communicating with the upper pool.

FIG. 1 shows the device with the passage of the normal design flow, cross-section; in fig. 2 - the same view from the downstream.

The device includes obotochki 1 and 2 of elastic material between which are elastic cylinders 3, forming a culvert slit 4 and communicating with the upper reach through the holes 5.

Shells 1 and 2 communicate with the downstream through holes b formed on their weir surfaces.

The lower shell 2 communicates with the upstream by pipeline 7 with the valve 8. The upper sheath 1 communicates with the upper reach through an aperture 9 formed in its lower part and is secured by a system of cables 10 to the coastal anchors.

To eliminate the deflection of shells 1 and 2, in the places of their adherence to elastic cylinders 3, stiffeners 11 are installed,

for example in the form of pneumatic shells with high internal pressure.

In addition, the area of the holes on the water-insulating surfaces of the shells is 10-12 times smaller than the area of the holes connecting their cavities with the upper pool.

The device works as follows.

After it is installed in pyc, i.e. the flow, the valve 8 opens and the water through pipe 7 fills the cavity of shell 2. As the water level rises in the upstream side, the latter through hole 9- enters shell 1 and fills it, while the cylinders 3 are oblate, and through the slit 4, the water does not leak. As the level reaches the upper reach of the ridge of the shell 1, the flow of water overflows, while on the upper shell

1 The shifting force P and the force created by the vacuum on the spillway effect. These forces displace the envelope towards the downstream so that the cylinders 3 are filled with water through the hole 5 and form at this m a water through-gap 4, through which part of the stream flows. This part of the stream is found on the water face of the lower shell

2, with a stream flowing over the crest of the shell 1, and since these parts of the streams have different directions of movement and different speeds, their kinetic energy is mutually exacerbated, while the flow is aerated and its eroding force decreases sharply.

As the flow rate increases, I and 9 increase, and the inclination angle of the opening 9 changes, which reduces the flow of water through it into the cavity of shell 1. This causes more water to flow out through opening 6 than it enters. E. The volume of the shell 1 decreases, and the cylinders 3 are even more filled, thereby increasing the cross section of the slit 4, which contributes to maintaining the energy balance of ha-xxxxxx / xd t L / x ////// / 7 ////// 777

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the flow of the overflowing part and the flow from the slit. As the flood discharge decreases, shell 1 takes its former place, the filling of the cylinders 3 decreases, and the slit 4 takes on the dimensions necessary to increase the flow rate. To dismantle the regulating structure, it is necessary to close the valve 8, which will cause the lower shell 2 to be emptied through the openings 6 of its overflow surface.

In this case, the cable system 10 is detached from the shore anchors, the shell 1 is placed on the shell 2, which causes the opening of the hole 9, and is also emptied through the holes 6 of the overflow surface. After that, the structure is dismantled.

The use of the proposed device will reduce the cost of securing the riverbed sections of the downstream and the harmful effects of flood costs that cause flooding of upstream sections.

Claims (3)

1. A device for controlling the flow of water in hydraulic structures, including installed shells of elastic material installed one on top of another, characterized in that, in order to increase the efficiency of increasing the energy of the stream passing into the downstream, elastic shells are located between the shells water throughput slots. 2. A device according to claim 1, characterized in that the upper shell is fixed by means of a system of cables. 3. The device according to claim 1, characterized in that the shells and elastic cylinders are made communicating with the headwater. Sources of information taken into account in the examination: 1. The patent of Czechoslovakia No. 121007, cl. E 02 B, 1966. eleven Vllz.2