Ultra-large type reservoir emptying valve structure

Abstract

The invention relates to the field of reservoir emptying valves of hydraulic power and hydroelectric engineering, in particular to an ultra-large type reservoir emptying valve structure. The ultra-large type reservoir emptying valve structure comprises a valve body. The end of a water outlet of the valve body is sleeved with a sleeve capable of sliding in the water flow direction and coaxial with the valve body, and a flow guiding cone coaxial with the valve body is arranged on the inner side of the end of the water outlet of the valve body. The flow guiding cone is fixed to the valve body, and a gap is reserved between the flow guiding cone and the valve body. The flow guiding cone is in sealing connection with the end of the sleeve sliding to the foremost end, and an opening type flow guiding cover is further included. The flow guiding cover is of an annular structure with the diameter larger than the diameter of the flow guiding cone. The flow guiding cover is arranged outside the flow guiding cone and is coaxial with the flow guiding cone. The ultra-large type reservoir emptying valve structure is simple and convenient to install, has the beneficial effects of being large in diameter and flow, resistant to medium pressure and the like, and can be applied to various large-medium reservoirs. Rapid emptying of a reservoir is facilitated, the construction cost of the reservoir emptying structure is reduced to a great extent, the construction progress of the whole reservoir can be accelerated easily, and extremely high popularization value is achieved.

Description

technical field [0001] The invention relates to the field of reservoir venting valves of hydraulic and hydropower projects, in particular to a super-large reservoir venting valve structure. Background technique [0002] Reservoirs of water conservancy and hydropower projects usually need to be equipped with a venting structure. The venting valve is a common technical means. The venting valve can be used to quickly and safely empty the reservoir. Compared with other venting structures, the venting valve has many advantages. The use of vent valves can save a lot of money compared with the construction of deep-hole gate reservoir venting facilities, and can also replace the mode of using explosion-controlled bolt plugs to open the gates to vent the reservoir, which greatly improves the safety performance of reservoir venting, and can also greatly shorten the reservoir. Water storage period. [0003] The vent valve in the prior art usually uses a shroud to further enhance the o...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the design of the diversion cover of the vent valve in the above background technology is unreasonable, and it cannot be applied to the venting of large and medium-sized reservoirs and the problem that the service life of the vent valve is not long. The structure of large-diameter, medium-pressure-resistant super-large reservoir vent valve

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