US1753401A - Safety apparatus for oil-storage tanks - Google Patents

Description

PY 8, m3@- H. J. BUcKnNG 1,753,401

SAFETY APPARATUS FOR OIL STORAGE'TANKS Filed Nov. 24, 1926 i 15 drawings, in which shell 31.

Patented Api. s, 1930 I l 1,753,401

UNITE-D STATES PATENT OFFICE HENRY J. BUCKING, OF SAN FRANCISCO, CALIFORNIA SAFETY APPARATUS FOB OIL-STORAGE TANKS Application med November 24, 1926. Serial 170.150,558.

This invention relates to safety apparatus tween the screen members 18 and 2O is a body for oil storage tanks, and it has for one of its of mineral wool 21. It is to be understood objects the provision of apparatus for prethat other mateiial than mineral wool may be venting the oil in storage tanks from being employed, and that suoli material may be any ignited by lightning or otherwise. non-combustible porous material:permitting 55 Another obj ect of the invention is the prothe gas to iiow from the inner screen inc iiibei vision of fire extinguishing apparatus for 2O into the space between the sci-een member oil tanks. 18 and the shell 16. Secured toene eiid of the With tlie foregoing objects in view, toshell 16 is a tapered shell 25. /At'tlie small gether with such other objects and advanend of the tapered conical shell 25 isvsecured 80 tages as may subsequent-ly appear, this ininvert-ical position a screen 26. A pipe 27 veiition resides in the construction and arconnects with the smaller end of the tapered rangement of parts hereinafter described and conical shell 25. The pipe 27 is formed with claimed, and illustrated in the accompanying a trap 28 and at 30 enters the bottom of a.

Figure 1 is a side elevation partly in sec- The tower 31 is provided with spaced tion of the apparatus embodying my inventransverse circular perforated plates 35 tion; which are made of two pieces similar to the Figure 2 is al vertical sectional view of part semi-circular perforated plate shown in Figof the apparatus shown in Figure 1; Y ure 4, andthe tower is further provided with ,Y Figure 3 is a section taken on line 3-3 of alternating perforated plates 36, each made Figure 2, and of two semi-circular plates of the type shown Figures 4 and 5 are respectively semi-circuin Figure 5. lar perforated plates employed in the appa- The vapors emerging from 'the pipe 27 pass 25 ratus in my invention. through the water seal and through the aper-l 75 through small openings above the oil level. latter, "Running from the top of the tower Referring to the drawings for a more detures of the plates 35 and 36. It will be noted tailed descriptiony thereof, the numeral 7 iiifrom the disposition of these perforated dicates an oil storage tank. The numeral 8 plates that the vapors must take a tortuous indicates a body of oil partly filling thetank. path. As the vapors rise through the tower 30 It is well known that vapors arise fiom the they are condensed by water falling downoil; and it is further known that these vapors, wardly from a pipe 37 having outlets 38 and mixed with air, form a combustible and even 39 which let the water fall into sprinklers 40. i an explosive combination. The air which An overflow pipe ilcarries off the water and mixes with the VapOlS gets into the tank the Condensed vapors for recovery. of the It is therefore desirable to withdraw the oil is a pipe 42 including a pressure valve 43; vapor from the tank. and means are provided this pipe Connects with the top of a tmp 45 for performing the mentioned operation. having therein a check Valve 46. Such means comprises a plurality of pipes 10 To XtinUuiSh a fire in the tank I provide radially secured to a hollow center member 11 a Steam pige 50 throiwh which team may 90 to which is secured a pipe 12 provided with a be`ntroduced no the'tnk valve 13 which is connected to a pump 14. From the foregoing descriptn it will be rIhe operation of the pump 14 is effective to withdraw vapors from the tank and to pass Maddy appreciated by those Sklued m the art that the apparatus is adapted to carry out 95 such vapors into a member 16 shown in der mii in Figure Q The member 16 comprises ,i the aforementioned obiects of the invention.

shell 17 enclosing a screen member 18 latervvhlle I have ShPWH only the PIGGI'IG ally spaced therefrom. Vithin the screen form ,0f the Hilventloni 1t ShQuld b? unfel" member 18 and spaced laterallyv therefrom is stood that various changes or modifications another screen inember'20, and interposed bemay be made within the scope of the claims hereto attached without departing from the spirit of the invention.

I claim: n 1. In a device of the type described, a cas- 5 ing having a screened inlet and a screened outlet, a screened cylinder mounted in said casin sind connecting with the inlet end, said cylinder having a closed end and the'wall of said cylinder being siaced from said casing, a second screen cy n er disposed within said first cylinder and being spaced therefrom said second named cylinder having one end connecting with the inlet and having its other end closed by a screen, the space between the screened cylinders being filled with afbrous material. Y

2. In a device of the t pe described, acasing having a screened inlet, a screened cylinder mounted in said casing and connecting with the inlet end, said cylinder havin a closed end and the wall of said cylinder eing spa'ced from said casin `a, second screen cylinder disposed Within said first cylinder and bein s aced therefrom, said second named cy in er having one end connecting with the inlet and having its other end closed by a screen. y

.HENRY J. BUCKING.

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