FR2578475A1 - CANON FOR OBTAINING A HIGH SPEED LIQUID JET - Google Patents

Abstract

THIS CANON HAS A METAL ENCLOSURE 1 OF EXTENDED CYLINDRICAL GENERAL SHAPE, HOLLOWED WITH AN AXIAL CHANNEL 2 CLOSED TO ONE END BY AN END 3 AND EQUIPPED AT THE OTHER END OF A NOZZLE 4 HOLLOWING A CONVERGENT AXIAL 6, THE CHANNEL AXIAL 2 COMPRISING A MOBILE PISTON 9 LOCATED BETWEEN TWO EXTREME BEDROOMS, ONE 8 ADJACENT TO THE BIT AND FILLED WITH AN EXPLOSIVE POWDER RESERVE AND THE OTHER, SEPARATED FROM THE AXIAL CONVERGENT OF THE BUSE BY A DETACHABLE OPENING AND FILLED WITH LIQUID TO BE PROJECTED IN THE FORM OF HIGH SPEED JET.

Description

CANON FOR OBTAINING A LIQUID JET A

GREAT SPEED

  The present invention relates to a barrel for obtaining a jet of high speed liquid and in particular a water gun capable of producing on

  a remote target a sufficient energy shock

to bring about its destruction.

  It is known that when a column of

  highly compressed quid is ejected through a

  device or nozzle in the form of a conver-

  gent, it acquires a great kinetic energy with formation of a jet whose speed is given by the equation

V2 = 2P

  formula in which: - P is the pressure of the liquid at the inlet of the convergent and

p is the density of the liquid.

  In order to obtain very high ejection speeds of the jet of the liquid, it is therefore important to create dynamic pressures which are also very high at

  the entrance of the convergent. This gives an increase

  considerable speed of the jet of liquid that can then be used with a large distance of action to obtain very high dynamic pressures on a target that one wishes to destroy by

shock of this jet of liquid.

  For this purpose, the present invention has

  purpose for a gun to obtain a jet of liquid at high speed using means

  particularly simple to implement.

  This gun essentially comprises an

  girdle of cylindrical general shape allon-

  a hollow canal with an axial channel closed at one end by a nozzle and provided at the other end with a nozzle

  hollowed out by an axial convergent, the axial channel comprising

  a movable piston located between two extremely

  my, one adjacent to the mouthpiece and filled with a

  explosive powder and the other, separate from the

  axial outlet of the nozzle by a tear-off lid and filled with the liquid to spray in the form of jet

great speed.

  In any case, the invention will be better

  taken with reference to the following description of a

  example of the implementation of the liquid gun, description

  which will be made for illustrative and not limited

  tif with reference to the single figure attached.

  In this single figure, an exploded section is shown along its axis AA a liquid gun according to the invention which essentially comprises a metal housing 1 of elongated cylindrical shape, hollowed in its central portion of an axial channel 2 for contain the liquid that you want to project in the form of a jet of high energy at speed

  raised to the outside 10 of the barrel.

  According to the invention, this axial channel 2 is closed at one of its ends by a tip 3 for example screwed on the outer wall of the chamber 1 and

  at the other end 10 of the barrel or ejector end

  tion, by a nozzle 4 also screwed in 5 on the

  opposite outer wall of the enclosure 1.

  According to the invention, the nozzle 4 is

  hollowed along its axis with a portion 6 in the form of

  vergent and which follows the axial channel 2 of the

  encircled 1. A ruptured lid 7, for example in

  plastic material, closes the axial channel 2 of the

  te 1 ensuring your separation between it and the

convergent channel 6 of the nozzle 4.

  According to the invention, the channel 2 of the chamber 1 further comprises at its end located towards the endpiece 3 a chamber 8 filled with explosive powder and between the chamber 8 and the liquid 2, a movable piston 9 adapted to

  to slide longitudinally in channel 2. A

  duit 8a connects room 8 to the outside

  for the firing of the powder by mechanical means

electric.

  Under these conditions, the operation of the liquid gun is as follows: the firing by any known means of the powder contained in the chamber 8 produces in a very short time a very high pressure which propels

  the piston 9 at high speed in the channel 2 in

  thus compressing the liquid it contains.

  When the pressure of this liquid is such that the resultant force on the lid 7 is greater than the mechanical strength of this lid, there is a rupture thereof and the liquid contained in the channel 2 is

  expelled violently through convergent 6,

  thus, a high-speed jet that jails to the ex-

tremité 10 of the liquid gun.

  The characteristics of the liquid jet thus obtained depend directly on the nature and the quantity of the powder contained in the chamber 8, the shape and the length of the convergent 6, as well as the possible presence of a viscosity additive. -plastic

LIQUID USE

  A cannon like the one just described

  crit has resulted in water jets capable of piercing an encirclement of six 1 mm steel plates

  each thick at a distance of 1 m.

Claims (1)

CLAIM   Barrel for obtaining a jet of liquid at high speed characterized in that it comprises a metal enclosure (1) of generally elongated cylindrical shape, hollowed by an axial channel (2) closed at one end by a tip (3) and provided at the other end with a nozzle (4) hollowed out by an axially convergent (6), the axial channel (2) comprising a movable piston (9)   between two extreme chambers, one (8) adjacent   at the tip and filled with a reserve of powder explo-   sive and the other, separated from the axial convergent of the nozzle by a tear-off lid and filled with the liquid   to project as a jet at high speed.