SU1366594A1 - Bypass canal - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydropower construction, namely to structures of pumped storage power plants (PSPP). Purpose , . the invention is an increase in the efficiency of operation of reversible units in the pump mode by improving the hydraulic conditions in the discharge channel. The outgoing channel of the building of the HPP is made with the longitudinal wall 1, which is located between its section 2, adjacent to the section of the building of the HPP with turbine units, and section 3, adjacent to the section of the building of the HPP with reverse units. The bottom of section 2 is above the bottom of section 3. Wall 1 eliminates the formation of whirlpool zones, and the depth of the bottom of section 3 reduces the recession crisis in the discharge channel when the pumped-off pump is operating. I il. with (L

Description

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The invention relates to hydropower construction, and specifically to structures of pumped storage power plants (PSPPs).

The purpose of the invention is to improve the performance of reversible units in the pumping mode by improving the hydraulic conditions in the discharge channel.

The drawing shows a discharge channel, a transverse section.

The outgoing channel of the PSP is made with a longitudinal wall 1, which is placed on the skim; In this case, the channel bottom is made higher in section 2 of the section of turbine units compared to section 3 of the section of reversible units.

Within the section of reversible units, a greater deepening of the bottom mark is necessary, which is determined by the operating conditions of reversible units in the pump mode.

During the construction of the PSPP At the first stage, sections of the PSPP with reversible units and the longitudinal wall 1 in the exhaust channel are constructed.

Ra of the second stage, under the protection of the longitudinal wall 1, which also performs the function of a jumper, also builds a section of the power plant with turbine units.

When the PSP is operating in turbine mode, the water discharged through reversible aggregates from their suction pipes flows into the discharge channel within section 3, and discharged through turbines 66594, 2

In this case, a uniform discharge of water in each section is ensured despite the different specific consumption of water: in section 2, diverting the flow from more powerful turbine units, the specific consumption is higher on average by 1.5 times

0 than in section 3, and the bottom of section 3 is buried relative to section 2.

When the HPSP is operating in the pumping mode, water is supplied to the suction pipes of reversible units only within the limits of section 3, which ensures an even supply of water with the exception of the possibility of formation of whirlpool zones.

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Claims (1)

Invention Formula The discharge channel is mainly the building of a pumped storage power plant with reversible and turbine units, including a longitudinal wall mounted on the bottom of the channel, characterized in that, in order to increase the efficiency of operation of reversible units in the pump mode by improving the hydraulic conditions in the exhaust channel, the longitudinal wall is made free-flowing and placed between the sections with reversible and turbine units of the power station building with the channel divided by width into two sections, the channel section adjacent to the section of the power station building with turbine units, made with a bottom located above the bottom of the channel section adjacent to the section of the power plant building with reversible units.