CN217026957U

CN217026957U - Water stop device for water discharge hole of dam

Info

Publication number: CN217026957U
Application number: CN202220519871.4U
Authority: CN
Inventors: 陈舟; 金盛杰; 王军; 王鑫; 戴邦国; 夏玉梅
Original assignee: Zhejiang Water Resources And Hydropower Survey And Design Institute Co ltd
Current assignee: Zhejiang Water Resources And Hydropower Survey And Design Institute Co ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-07-22
Anticipated expiration: 2032-03-09

Abstract

The utility model discloses a water stopping device for a water discharging hole of a dam, which comprises a water stopping rubber ball, a steel truss, a balancing weight, a water discharging hole, an exhaust hole and an underwater camera. The water-stopping rubber ball is a main water-stopping component and is used for plugging a dam water drainage hole; the steel truss is a frame structure for fixing the water-stopping rubber ball; the balancing weight is a stable part of the whole water stopping device, is positioned on the left side and the right side of the lower part of the steel truss and is connected with the steel truss by adopting a steel hook; the water drain hole and the air exhaust hole are positioned on the water stopping rubber ball, the water stopping rubber ball is penetrated through by a steel pipe, the outer sides of the water stopping rubber ball are respectively connected by a hose, and one end of the hose extends out of the water surface; one end of the drain hole on the water surface of the connecting hose is connected with a water pump; the underwater camera is positioned at the upper part of the steel truss, and the underwater vision is provided for the water stopping device. The utility model has the advantages of economy, high efficiency, strong applicability, simple operation, good water stopping effect and strong reliability, and provides a safe and reliable waterless environment for overhaul work.

Description

Water stop device for water drain hole of dam

Technical Field

The utility model relates to the technical field of dams of hydraulic and hydroelectric engineering, in particular to a dam water discharge hole water stopping device capable of effectively stopping water under the condition that a dam water discharge valve fails.

Background

In water conservancy and hydropower engineering, a concrete dam is generally provided with a dam body water discharge hole, and reservoir water can enter a downstream through an orifice or a pipeline which is arranged in the dam body and an inlet of which is submerged under water. Besides flood discharge, the dam body orifice can also be used for completing tasks such as water supply, sand discharge, emptying or construction flow guide.

The drainage hole of the dam body is generally positioned at the lower part of the water level, the flow velocity in the hole is higher, negative pressure, cavitation erosion and vibration are easy to generate, the gate is difficult to overhaul underwater, the water pressure borne by the gate is large, the door opening force is correspondingly large, and the door body structure, water stop and opening and closing equipment are complex.

In the existing water conservancy and hydropower engineering, the condition that a water drain valve of a dam body of a dam is damaged and fails is more, the dam body is difficult to overhaul under the condition of high water level, and the cost is too high when the water level of a reservoir area is reduced for overhauling.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water stop device for a water drain hole of a dam, which is used for solving the problems that a water drain valve of the dam body is damaged and fails and water is stopped by the water drain hole under the condition of higher water level of a reservoir area in the prior art, and provides a safe and reliable water-free environment for maintenance work. On one hand, the water level of a reservoir area can be prevented from being reduced due to necessary maintenance, and the economic loss is reduced; on the other hand, can effectively stop water, provide the safety guarantee for the maintainer.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the dam water drain hole water stopping device comprises a water stopping rubber ball, a steel truss, a balancing weight, a water drain hole, an exhaust hole and an underwater camera; the water-stopping rubber ball is a main water-stopping component and is used for plugging a dam water drainage hole; the steel truss is a frame structure for fixing the water-stopping rubber ball; the counterweight block is a stable part of the whole water stopping device, is positioned on the left side and the right side of the lower part of the steel truss and is connected with the steel truss by adopting a steel hook; the water drain hole and the air exhaust hole are positioned on the water stopping rubber ball, the water stopping rubber ball is penetrated through by a steel pipe, the outer sides of the water stopping rubber ball are respectively connected by a hose, and one end of the hose extends out of the water surface; one end of the drain hole, which is connected with the water surface of the hose, is connected with a water pump so as to drain the residual water quantity in the dam drain hole after the dam drain hole is blocked by the water-stopping rubber ball; the air vent connecting hose is used for balancing the air pressure in the water discharge hole and the external air pressure and is matched with water discharge; the underwater camera is positioned at the upper part of the steel truss and provides an underwater view for the dam water drain hole water stop device.

Further, the sphere radius of the water-stopping rubber ball is 1.5 times larger than the aperture radius of the dam water drainage hole.

Furthermore, the steel truss is a rectangular frame, the centroid of the steel truss is superposed with the sphere center of the water-stopping rubber ball, and Q345 low-alloy high-strength structural steel is adopted.

Further, the balancing weight is a cast iron balancing weight.

Furthermore, the inner diameters of the drain hole steel pipe and the exhaust hole steel pipe are both 20mm, and the thicknesses of the drain hole steel pipe and the exhaust hole steel pipe are both 5 mm.

Further, the steel truss and the water-stopping rubber ball are fixedly connected by a steel truss fixing rod.

Furthermore, both sides of the upper part of the steel truss are provided with hanging rings which are fixedly connected with the steel truss 2 and used for lifting the whole dam water drainage hole water stopping device.

Furthermore, the underwater camera is fixedly connected with the steel truss through an underwater camera fixing piece.

The utility model has the beneficial effects that:

1. the water stopping device is economical and efficient, high in applicability and simple to operate.

2. The water stopping effect is good, the reliability is strong, and a safe and reliable anhydrous environment is provided for maintenance work.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1-water stopping rubber ball; 2-steel trusses; 3-a balancing weight; 4-a drain hole; 5-air exhaust hole; 6-underwater camera; 7-steel truss fixing rod pieces; 8-steel hook; 9-a hoisting ring; 10-underwater camera fixing part; 11-the drain hole is connected with a hose; 12-air vent connecting hose.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the dam water drain hole water stopping device comprises a water stopping rubber ball 1, a steel truss 2, a balancing weight 3, a water drain hole 4, an exhaust hole 5 and an underwater camera 6.

The water-stopping rubber ball 1 is a main water-stopping component and is used for blocking the dam water-discharging hole, and the radius of the ball body needs to be larger than 1.5 times of the radius of the orifice of the dam water-discharging hole.

The steel truss 2 is a rectangular frame with a frame structure for fixing the water-stop rubber ball 1, the centroid of the steel truss 2 is superposed with the sphere center of the water-stop rubber ball 1, and the steel truss 2 is made of Q345 low-alloy high-strength structural steel. The steel truss 2 and the water-stopping rubber ball 1 are fixedly connected by a steel truss fixing rod member 7.

The balancing weight 3 is a stable part of the whole water stopping device, adopts cast iron balancing weights, is positioned on the left side and the right side of the lower part of the steel truss 2 and is connected with the steel truss 2 by adopting a steel hook 8.

The drain hole 4 and the exhaust hole 5 are located on the water-stopping rubber ball 1, steel pipes with the inner diameter of 20mm and the thickness of 5mm penetrate through the water-stopping rubber ball 1, the outer sides of the water-stopping rubber ball are connected through a drain hole connecting hose 11 and an exhaust hole connecting hose 12 respectively, and one end of each hose extends out of the water surface. After the water drain hole is blocked by the water stopping device, one end of the water drain hole connecting hose 11 above the water surface is connected with a water pump for emptying residual water in the water drain hole, and the exhaust hole connecting hose 12 is used for balancing air pressure in the water drain hole and the external air pressure and is matched for draining.

The underwater camera 6 is positioned at the upper part of the steel truss 2 and is fixedly connected with the steel truss 2 by an underwater camera fixing piece 10, so that an underwater view is provided for the dam water drain hole water stopping device.

The hoisting rings 9 are positioned on two sides of the upper part of the steel truss 2, are fixedly connected with the steel truss 2 and are used for hoisting and lifting the whole dam water drainage hole water stopping device.

The present invention is described in the embodiments with reference to the drawings, but the scope of the utility model is not limited thereby, and it should be noted that those skilled in the art can obtain the technical solutions by equivalent substitution or equivalent change without departing from the spirit of the utility model, and these technical solutions all belong to the protection scope of the utility model.

Claims

1. Dam drain hole sealing device, its characterized in that: the underwater water seal device comprises a water seal rubber ball, a steel truss, a balancing weight, a drain hole, an exhaust hole and an underwater camera; the water-stopping rubber ball is a main water-stopping component and is used for plugging a dam water drainage hole; the steel truss is a frame structure for fixing the water-stopping rubber ball; the balancing weight is a stable part of the whole water stopping device, is positioned on the left side and the right side of the lower part of the steel truss and is connected with the steel truss by adopting a steel hook; the water drain hole and the air exhaust hole are positioned on the water stopping rubber ball, the water stopping rubber ball is penetrated through by a steel pipe, the outer sides of the water stopping rubber ball are respectively connected by a hose, and one end of the hose extends out of the water surface; one end of the drain hole on the water surface of the connecting hose is connected with a water pump so as to drain residual water in the dam drain hole after the water-stopping rubber ball blocks the dam drain hole; the exhaust hole is connected with a hose for balancing the air pressure in the water discharge hole and the external air pressure and is matched with water discharge; the underwater camera is positioned at the upper part of the steel truss and provides an underwater view for the dam water drain hole water stop device.

2. The dam drain hole water stopping device according to claim 1, wherein: the sphere radius of the water-stopping rubber ball is 1.5 times larger than the aperture radius of the dam water drainage hole.

3. The dam drain hole water stopping device according to claim 1, wherein: the steel truss is a rectangular frame, and the centroid of the steel truss is superposed with the sphere center of the water-stopping rubber ball.

4. The dam discharge hole water stopping device according to claim 1, wherein: the steel truss and the water-stopping rubber ball are fixedly connected by a steel truss fixing rod piece.

5. The dam discharge hole water stopping device according to claim 1, wherein: and hoisting rings are arranged on two sides of the upper part of the steel truss and fixedly connected with the steel truss for hoisting and lifting the dam water drain hole water stopping device.

6. The dam drain hole water stopping device according to claim 1, wherein: the underwater camera is fixedly connected with the steel truss through an underwater camera fixing piece.

7. The dam drain hole water stopping device according to claim 1, wherein: the inner diameters of the drain hole steel pipe and the exhaust hole steel pipe are both 20mm, and the thicknesses of the drain hole steel pipe and the exhaust hole steel pipe are both 5 mm.