ES2201882B1 - FLOW REDUCING DEVICE FOR HIGH PRESSURE FLUID OUTPUTS. - Google Patents

Abstract

Flow reducing device for high pressure fluid outlets. This device comprises a screw (5) intended to be screwed onto the fluid outlet (1), having at one of its ends a drive groove (6) and at the opposite end a conical surface (8) intended to contact frontally against a seat (10) also conical defined in the fluid outlet (1); the conical surface (8) presenting a small channel (11) that extends along its generatrix to allow the exit of a small flow of fluid to the outside once the bolt (5) is fully tightened on the outlet ( one). The conical surface (8) and the conical seat (10) may have equal or different conicity angles.

Description

Flow reducing device for outputs of high pressure fluid.

Object of the invention

The present invention relates to a device flow reducer for high pressure fluid outlets.

Background of the invention

The circuits or devices that work with high pressure fluid, present an important problem when it is it is necessary to carry out the decoupling at any of its outputs replacement of measurement or control elements. This problem is poses for example in the valves of the bottles used in fire extinguishing facilities, which contain inert gases at a pressure greater than 200 atmospheres.

Try to solve this problem by locating non-return valves at high pressure outlets so that perform the coupling or decoupling of elements various, such as manometers or solenoid valves, is not prudent, because the high internal pressure can overcome the physical resistance offered by these valves, leaving these fired as true projectiles, with the consequent risk of human and material damages.

The problem raised is not solved As for removing the element (pressure gauge, pressure switch, etc.,) mounted on the outlet would result in the total loss of the extinguishing agent, with the danger that would entail, given the risk that the item in question would be triggered by the own pressure

One of the techniques used to reduce the outflow consists of mounting on the outlet a screw that allows to adjust the flow of exit. This technique presents the problem that it does not allow carry out an effective control of the output flow since if effect excessive tightening can be completely sealed out, rendering it useless, and if the screw is loosened excessively, it can free from the thread due to the pressure shot Like a projectile

Description of the invention

To solve the aforementioned problems, devised the flow reducing device for high outputs pressure object of the invention, which provides particularities constructive oriented to facilitate decoupling and replacement of elements in these outputs and ensure correct flow control in them minimizing the losses that Occur.

According to the invention, the device flow reducer for high pressure fluid outlets comprises a screw intended for screw mounting on the fluid outlet, presenting at one of its ends a drive slot and in  the opposite end a conical surface intended to contact frontally against a seat, also conical, defined to such effect on the fluid outlet.

The conical surface defined in one of the Screw ends presents a small channel that extends to along its generatrix to allow the exit of a small flow of fluid after full tightening of the screw over the fluid outlet.

According to the invention, the defined conical surface at one end of the screw and the conical seat defined in the fluid outlet may have the same conicity angle or different conicities, so that when contacting frontally only allow the exit or passage of fluid inside the channel defined in one of them.

This small flow will go outside by the separation or tolerance between screw threads and of the corresponding output.

The conical surface of the screw can be defined in a coaxial cylindrical rod and integral with said screw. This feature has the purpose of preventing ensuring the definition of a cavity between the screw base and conical seat, preventing contact between these and the total sealing of the fluid outlet by the screw.

Description of the figures

To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, with character Illustrative and not limiting, the following has been represented:

- Figure 1 shows an elevation view partially sectioned of an exploded view of a valve for bottles extinguishers in which the flow reducing device is observed object of the invention disassembled, arranged between one of the valve and pressure gauge outlets intended to be mounted on that.

- Figure 2 shows an enlarged detail of the mounting of the flow reducing device on the outlet of the valve body

- Figure 3 shows a plan view of the flow reducing device.

- Figure 4 shows an elevation view of the flow reducing device.

Preferred Embodiment of the Invention

In the embodiment of Figure 1, the device flow reducer is applied on the high pressure outlet (1) of a valve assembly (2) in which a pressure gauge (3) is coupled and on it a protective cap (4).

As seen in Figure 2, the device flow reducer comprises a screw (5) that is mounted on the thread provided at the outlet (1) of the valve body for the pressure gauge assembly (3).

The screw (5) has a groove at one end (6) for its actuation and at the opposite end a rod (7) provided with a conical surface (8). The rod (7) guarantees the existence of a small cavity (9) between the conical seat (10) defined at the outlet (1) and the screw base (5).

When the screw (5) is fully tightened, the surface conical (8) contact frontally with the conical seat (10). The conical surface (8) presents, as shown in figure 3, a small channel (11) that extends along its generatrix.

The purpose of the channel (11) is to guarantee the outflow of a small flow of fluid outward, passing said fluid through the cavity (9) and the space between the screw threads (5) of the mouth (1) towards the pressure gauge (3).

The channel (11) allows the fluid flow pop-up is very small, which allows to disassemble and return to mount the pressure gauge (3) or any other element without risk of exit projected and maintaining a minimum fluid leak during the time the pressure gauge remains (3).

Once the nature of The invention, as well as a preferred embodiment, is for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (3)

1. Flow reducing device for high-pressure fluid outlets, characterized in that it consists of a screw (5) intended to be threaded onto the fluid outlet (1), with one of its ends having a drive slot (6) and at the opposite end a conical surface (8) intended to contact frontally against a conical seat (10) also defined in the fluid outlet (1); the conical surface (8) presenting a small channel (11) that extends along its generatrix to allow the exit of a small flow of fluid to the outside once the bolt (5) is fully tightened on the outlet ( one). Device according to the preceding claim, characterized in that the conical surface (8) and the conical seat (10) can have equal or different conicity angles. Device according to claim 1, characterized in that the conical surface (8) is defined in a cylindrical rod (7) coaxial and integral with the screw (5).