US 3358961 A
Description (OCR text may contain errors)
Dec. 19, 1967 R. A. MONTGOMERY ET AL 3,358,961
EXPLOSIVELY DRIVEN SHUTTER TYPE PRESSURE RELEASE APPARATUS Filed March 5, 1965 A no.1.
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I r 45 46 I7 INVENTOR RAYNER A. MONTGOMERY PAUL V. FINERAN EARL E. KILMER WILLIAM D. JAMES A I ATTORNEY United States Patent 3 358 961 EXPLOSIVELY DRIVEN SI-lUTTER TYPE PRESSURE RELEASE APPARATUS Rayner A. Montgomery and Paul V. Fineran, Silver Spring, and Earl E. Kilmer, College Park, Md., and
William D. James, Ames, Iowa, assignors to the United States of America as represented by the Secretary of the Navy Filed Mar. 5, 1963, Ser. No. 263,084 2 Claims. (Cl. 251-11) The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
This invention relates to a quick acting valve and more particularly to an explosively operated slideable valve.
In providing a pressure release for pressure systems which require a quick acting pressure release device which operates upon command, metal diaphragms ruptured by a shock wave or explosive membranes ruptured by detonating explosives have been used. The disadvantages of the use of the metal diaphragms ruptured by shock waves include the production of undesirable refiected shock waves in the system and the metallic fragments produced by the rupture of the metallic diaphragm. The use of explosive membranes produces undesirable byproducts of the explosive reaction which are confined to the system after the explosive membrane has been detonated.
With the present invention, a quick acting pressure release is provided without the undesirable after effects mentioned.
An object of this invention is to provide a rapid pressure release in a fluid flow system.
Another object of this invention is to provide a sliding valve operated by an explosive driving means.
A further object of this invention is to provide a rapid release of a pressure seal.
A still further object of this invention is to provide a quick acting valve for releasing fluid pressure upon command.
Other objects and many of the attendant advantages of this invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawing in which like reference numerals designate like parts throughout the figures thereof and wherein:
FIG. 1 is a sectional view in perspective of the invention showing the valve shutter in the closed or sealed position and the upper portion removed;
FIG. 2 is a sectional view of the valve and partially broken away; and
FIG. 3 is a view in perspective of the valve of this invention similar to FIG. 1 when the shutter is in the open or released position.
Referring now to FIGS. 1 and 2 of the drawings, a valve is shown having a lower plate 11 and an upper plate 13. The lower plate 11 and upper plate 13, not shown in FIG. 1, may be identical in size and shape except for pins 15 in lower plate 11 which mate with corresponding holes in upper plate 13. Lower plate 11 and upper plate 13 are provided with mating recessed channel portions 17 and 19 providing a chamber in which shutter body 21 may slide. Mating channel portions 23 and 25 in plates 11 and 13 respectively provide a chamber in which the shoulder portion 27 of valve shutter body 21 may slide. Shutter body 21 is provided with an aperture 29 which is aligned with holes 31 and 33 of plates 11 and 13 respectively when the shutter is in the open position as indicated in FIG. 3. Annular recesses 35 and 36 are provided in plates 11 and 13 respectively which are co- 3,358,961 Patented Dec. 19, 1967 axially disposed with relation to holes 31 and 33. These annular recesses are fitted with 0 rings 37 and 38 which provide a pressure seal between the lower and upper plates of the valve and the valve shutter body when the valve shutter body is in the closed position. Holes 39 in lower plate 11 and holes in upper plate 13, not shown, are provided for bolting or otherwise securing plates 11 and 13 together and for mounting the valve in a fluid flow system, e.g. a wind tunnel or a piping arrangement for moving fluids.
A cylinder body 43 is shown threadedly engaging the valve body. A cylinder 45 within cylinder body 43 provides for the slideable movement of piston 46 within the cylinder. A piston rod 47 is provided for connecting piston 46 to the shoulder portion 27 of the shutter 21. An O-ring 48 seals piston 46 and cylinder 45.
A plug 49 designed for threaded engagement with cylinder body 43 provides a powder charge 51, a lead-in charge 53, an electrical fuze 55 with wires 57 and 58 connecting fuze 55 to receptacle 59.
In operation, receptacle 59 is plugged into an external electrical circuit containing a source of voltage for energizing the fuze and a switch for controlling the operation of the valve. Normally the shutter 21 of the valve will be in the closed position as shown in FIG. 1. In this position fluids under pressure in a chamber or pipe in communication with hole 31 will be sealed ofl? from a chambet or pipe in communication with hole 33. When it is desired that the seal between apertures or chambers 31 and 33 be broken, the electrical fuze circuit is energized, igniting the explosive charge 51. Explosion gases resulting from the explosion of explosive charge 51 will then drive piston 46, to the other end of cylinder 45 causing the valve body to move to the open position with hole 29 in alignment with axial holes 31 and 33 of the valve body, allowing fluids to travel freely through the valve.
Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood, that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.
What is claimed is:
1. An explosively actuated pressure release apparatus comprising: valve body means provided with a cylindrical opening projecting therethrough, said valve body means comprising a pair of plate members provided with recess portions for slidably mounting shutter means therein; shutter means slidably mounted between said recess portions of said plate members so as to divide said cylindrical opening into a first and a second chamber when said shutter means is in a first position, said shutter means defining an aperture therein which is out of alignment with respect to said cylindrical opening when said shutter means is in said first position; a first sealing means and a second sealing means located between said first chamber and said shutter means and between said second chamber and said shutter means, respectively, whereby a pressure seal is provided between said first chamber and said second chamber; and shutter means driving means comprising piston body means mounted on said valve body means and provided with an open cylinder for slidably mounting piston means therein, piston means slidably mounted in said open cylinder in said piston body means and connected to said shutter means for driving said shutter means to a second position in which the aperture in said shutter means is in alignment with respect to said cylindrical opening whereby the pressure seal between said first chamber and said second chamber is broken, explosive charge means mounted in said piston body means adjacent said piston means and electrical detonating means connected to said explosive charge means whereby said shutter means may be driven from said first posi- 3 4 tion to said second position upon energizing said electri- 2,796,074 6/1957 Daudelin 137-68 cal detonating means. 2,816,730 12/ 1957 Rabas 251-328 2. The apparatus of claim 1 further comprising shoul- 2,877,780 3/1957 Whitley 137-68 der portion means through which said piston means is 3,111,133 11/1963 Fulton 137-68 connected, to said shutter means. 5 3,122,154 2/1964 Siebel 137-68 2,441,894 5/1948 Mennecier 137-68 X References Cited UNITED STATES PATENTS WILLIAM F. ODEA, Primary Examiner. 2,365,364 12/1944 Temple 137-68 R. GERARD, Assistant Examiner.
2,659,517 11/1953 Reinhardt 222-82 10