JPS6334249B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for discharging fluid from a high pressure system, such as a dam discharge channel, into an open space.

When discharging high-pressure fluid, there is generally an impact reduction method in which the high-pressure fluid collides with a civil engineering structure to reduce its energy.
Measures have been taken to naturally reduce the energy by installing a long and large energy reducer, but this method has the drawback of requiring large equipment and a large space.

In view of the above-mentioned circumstances, it is an object of the present invention to make it possible to effectively deenergize and discharge high-pressure fluid even with small-sized equipment through extremely simple improvements.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

A nearly horizontal discharge pipe is connected to a high-pressure fluid discharge source pipe 1 such as a dam via a discharge valve 2, and the discharge port 4 of the discharge pipe 3 is connected to a vertical wall inside an energy reducer 6 connected to an irrigation canal 5. 6a, and is provided at the discharge port 4 for discharging the high-pressure fluid in an energy-reducing manner into the open space of the energy-reducing device 6 in which the fluid is stored.

As shown in FIG. 2, the discharge device 7 has a hollow hemispherical portion 8A with a radial flow path centered on the spherical core, and has a diameter larger than the discharge port 4. A large number of tapered holes a are formed, the diameter of which is smaller on the downstream side, and a connecting flange 8B is connected to the hemispherical portion 8A to form a bottomed cylindrical discharge tool 8. 8 is removably connected to the discharge port 4 of the discharge pipe 3, and the high-pressure fluid whose discharge amount is controlled by adjusting the opening of the discharge valve 2 is cavitated through a large number of tapered small diameter holes a... While reducing the energy in a state where it is suppressed,
The fluid is diffused and released into the fluid stored in the open space of the energy reducer 6.

In addition, the holes a may be straight-shaped, or may have a mixture of tapered and straight shapes. As shown in FIG. Further, as shown in FIG. 5, the discharge tool 8 is made into a hollow annular body, and holes a are bored in the radial direction from the center of curvature of the discharge tool 8, as shown in FIG. It is also possible to make some of the fluids flowing toward the annular center collide with each other in an open space, and to secondarily reduce the energy of some of the fluids after the fluids are discharged. The specific structure can be modified in various ways.

Further, the present invention can be utilized for fluid deenergization of various high-pressure transportation systems.

In summary, the present invention provides the above-mentioned high-pressure fluid discharge device in which a substantially horizontal discharge pipe 3 is connected to the discharge source pipe 1 via a discharge valve 2, and a large number of holes a are connected to the discharge port 4 of the discharge pipe 3. It is characterized by being provided with a discharge tool 8 formed with...

That is, the discharge port 4 of the discharge pipe 3 is equipped with a large number of clippers a, and the high-pressure fluid whose discharge amount is controlled is deenergized while passing through the holes a. As a result, effective energy reduction can be carried out, and even if energy reduction is to be carried out after that, the entire system, including energy reduction works 6 and civil engineering structures, will be required in terms of equipment and space. Now I can make it smaller.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the high-pressure fluid discharge device according to the present invention; FIG. 1 is an overall side view, FIG. 2 is a cutaway side view of the main part, and FIGS. 3 and 4 are views of modified examples. 5 is a plan view of the third modification, and FIG. 6 is a sectional view taken along the line -- in FIG. 5. 3...High pressure fluid discharge pipe, 4...Discharge port, 8...
Streaming device, a...hole.

Claims (1)

[Scope of Claims] 1. A device for discharging high-pressure fluid into an open space, in which a substantially horizontal discharge pipe 3 is connected to a discharge source pipe 1 via a discharge valve 2, and the discharge of the discharge pipe 3 is connected to a discharge source pipe 1 through a discharge valve 2. A high-pressure fluid discharge device characterized in that an outlet 4 is provided with a discharge device 8 in which a large number of holes a are formed. 2. The device according to claim 1, wherein the hole a is formed into a tapered hole whose diameter becomes smaller toward the downstream side. 3. The device according to claim 1 or 2, characterized in that the discharge direction of the holes a is radial so that the high-pressure fluid can be diffused and discharged.