ES1075784U - Diffuser device for spills carried out through emissaries (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Diffuser device for discharges made by means of emissaries, comprising a diffusing nozzle (5) conventional, with a larger section area (51) at the entrance of the outfall and a smaller section (52) at the outlet of said spill emissary, characterized in that the diffusing nozzle (5) is connected to a diffuser conduit (1) through joining means (6), the diffuser conduit (1) being provided with a nozzle (2) for entering the fluid flow, with a narrowing zone (3), and increasing its section as it moves away from the narrowing zone (3), reaching its largest section in the exit zone (4). (Machine-translation by Google Translate, not legally binding)

Description

DIFFUSER DEVICE FOR DISCHARGES MADE BY EMISSIONS

Diffuser device for spills made by emissaries

Object of the invention

The present invention consists of a diffuser device for discharges made by emissaries, in order to improve the dilution and mixing processes in the receiving environment, and thus, reduce the environmental impact on adjacent ecosystems.

Background of the invention

The venturi effect technology applied in mixing processes has already been tested and is used in many different dilution processes, both in the chemical, petroleum and more recently aquarium industry, since it effectively mixes liquids of different specific gravity, eliminates stratifications, promotes homogenization in relation to pH, temperature, chemical distribution

or dispersion of gases and solids, etc.

Document ES 226196 for example, deals with one of those applications for mixing fluids within a stream of confined flowing water. The purpose of such an injector with venturi effect is to provide a proportionate amount of the substance into a stream that flows through a pipe in which it is installed. In addition to this dosing objective, it is desired to dissolve the treatment substance and distribute it throughout the current flowing from water.

Regarding the discharges made by emissaries, different types of conventional devices are known for mixing and dilution processes, as well as other types of proposals for their treatment, as in the case of brine discharges. Document ES 2206034, deals with a system for the recovery of the discharge of brine from desalination plants, where it is a matter of obtaining dry salt by evaporation, without spillage into the sea.

However, there are no proposals to take advantage of venturi effect technology in spills made through emissaries.

Description of the invention

The invention proposed here is to use the aforementioned technology of application of the venturi effect in discharges made by emissaries on sea coasts, estuaries, lakes and rivers. This would be the case, for example, of brines from desalination plants, purified water, discharges of cooling waters from thermal power plants or other industrial discharges.

The diffuser device described herein comprises a diffuser duct with two ends, of varying sections, through which the fluid flow circulates. In a conventional diffuser device, the flow of fluid would only pass through the diffuser nozzle. In the invention proposed here, a trumpet-shaped structure is coupled in front of this diffuser nozzle, so that the brine passes through said trumpet structure after passing through the diffuser nozzle. The diffuser device bases its operation on the venturi effect, so that the brine, passing through a diffuser nozzle, flows into the trumpet structure, which decreases its section until it reaches a neck of smaller section, where from there it returns to increase section

The improvement of these mixing processes, after the application of these devices, is based on the difference in the speed of the discharge by passing through the narrowest section of the diffuser tube, installed in the outlet of the emissary, with respect to the wider one, thus producing a pressure drop and therefore a suction effect of the surrounding water through the trumpet structure. The increase in the output speed is achieved through the narrowing of the conventional diffuser nozzle.

The suction zone of these diffuser devices comprises 360 ° around the narrowing or neck of the trumpet structure, so this large suction zone could guarantee, depending on the differential outlet pressure, a dilution of at least 1 to 4 This means that for each unit of volume of discharge 4 units of volume of water are sucked from the receiving medium. In this way, the mixing capacity between the surrounding suctioned water and the discharge just at the outlet of the diffuser is enhanced.

The optimal operation of the proposed diffuser device requires a pouring speed normally higher than that usually used with conventional diffusers to be able to generate the suction effect due to pressure difference, and thus produce the nominal dilutions characteristic of the device.

At the outlet velocities of the discharge, from which the venturi effect is achieved, only with the diffuser nozzle a much higher dilution rate is achieved than in conventional systems, which do not usually use such high speeds. On the other hand, the incorporation of the trumpet-shaped suction structure further maximizes the dilution processes when the venturi effect occurs just at the exit, due to the increase in the velocity of the spillage when passing through the narrowest section of the diffuser tube , producing a pressure drop and therefore a suction effect of the surrounding water.

To achieve dilutions similar to those achieved with the diffuser device of the invention, a greater number of conventional diffusers will be required, so that a greater economic investment will be necessary for the construction and installation of said conventional diffuser systems than with the diffuser device proposed.

Description of the drawings

To complete the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of the practical realization thereof, a set of drawings is accompanied as an integral part of said description. where for illustrative and non-limiting purposes, the following has been represented:

Figure 1 shows a perspective view of an "L" section of the diffuser device of the invention, where all the elements that compose it are appreciated.

Figure 2 shows the same view as Figure 1, where the main components, the diffuser duct (1) and the diffuser nozzle (5) are indicated. Said figure (E) of the brines and the like, as well as the suction of water (M) from the sea, river or others, and the outlet (S) of the mixture produced are indicated.

Preferred Embodiment of the Invention

The invention described herein is a diffuser device for spills made by emissaries. It is used for mixing discharges, such as brines from desalination plants, purified water, cooling water discharges from thermal power plants, or other industrial discharges. The diffuser device of the invention achieves greater dilution of the spills than any conventional diffuser.

The diffuser device for discharges made by emissaries comprises a conventional diffuser nozzle (5), with a larger section area (51) at the entrance of the emissary discharge and a smaller section area (52) at the exit of said emissary discharge. This area of smaller section (52) is much smaller with respect to its flow rate than any type of conventional device. The particular feature of the invention is that a diffuser duct (1) is connected to the diffuser nozzle (5) through connection means (6), the diffuser duct being

(1) provided with a fluid flow inlet nozzle (2), with a narrowing zone (3), and increasing its section as it moves away from the narrowing zone (3), reaching its largest section in the area of output (4).

The fact that the exit zone (4) increases its section as it moves away from the narrowing zone, like a trumpet, manages to increase the velocity of the spillage by passing through the narrowing zone (3) of the diffuser duct (1) , producing a pressure drop and therefore, an effect is sucking the surrounding water.

The joining means (6) between the diffuser duct (1) and the conventional diffuser nozzle (5) are appendages (6) that join the outer area of the diffuser nozzle (5) with the nozzle (2) of the diffuser duct (2). one).

The emissary discharge will pass through the conventional diffuser nozzle (5) through the inlet (E), while the surrounding water (sea, river, etc.) will be sucked through the nozzle (2) of the diffuser duct (1), indicated with the letter (M). In this way, the mixing capacity between the

10 water from the surrounding environment and the discharge just at the outlet (4) of the diffuser duct (1), leaving the mixture through the outlet (S).

The conventional diffuser nozzle (5) has a larger section area (51) at the inlet of the outflow and a smaller section area (52) at the exit of said outflow. Through this narrowing of the conventional diffuser nozzle (5), the increase in the output speed necessary to achieve the pressure difference generated by the suction effect and thus produce the nominal dilutions of the diffuser device is achieved. For this reason, the

The smaller section zone (52) is smaller in relation to its flow rate than any type of conventional device.

Claims (1)

5 1.-Diffuser device for discharges made by emissaries, comprising a conventional diffuser nozzle (5), with a larger section area (51) at the inlet of the emissary discharge and a smaller section area (52) at the exit of said emissary discharge, characterized in that the diffuser nozzle (5) is connected to a diffuser duct (1) through joining means (6), 10 the diffuser duct (1) being provided with a fluid flow inlet nozzle (2), with a narrowing zone (3), and increasing its section as it moves away from the narrowing zone (3), reaching its greatest section in the exit zone (4). 2. Diffuser device for discharges made by emissaries, according to claim 1, characterized in that the joining means (6) between the diffuser duct (1) and the conventional diffuser nozzle (5) are appendages (6) that join the area outside the diffuser nozzle (5) with the nozzle (2) of the diffuser duct (1). 3  FIG. one 5