US2008107503A1PendingUtilityA1
Container for transporting and storing hazardous substances and method for making the container
Assignee: COLUMBIANA BOILER COMPANY LLCPriority: Nov 2, 2006Filed: Oct 11, 2007Published: May 8, 2008
Est. expiryNov 2, 2026(~0.3 yrs left)· nominal 20-yr term from priority
F17C 2201/0104F17C 2201/056F17C 2203/0617F17C 2270/01F17C 1/14F17C 2221/037F17C 2203/0639F17C 2209/221F17C 13/06F17C 1/00Y10T29/49893F17C 13/04
43
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Claims
Abstract
A container for transporting and storing hazardous materials such as Chlorine includes a cylindrical body having end caps. The end caps are welded to the body to form a pressure vessel. The end caps have a peripheral edge that is recessed with respect to the ends of the body to protect the weld against damage from impact. The configuration of the juxtaposed components forms a lap joint that can be affixed together by a fillet weld.
Claims
exact text as granted — not AI-modified1 . A freight container for transporting associated substances under pressure, comprising:
a generally tubular body having an interior surface and a centerline axis; first and second end members fixedly attached to distal ends of the body; at least a first valve for transferring associated substances into the freight container; and, wherein the thickness of the body and the operating pressure of the freight container are calculated by the equation:
P
=
(
2
*
S
*
t
)
(
R
-
0.4
t
)
where
;
P is the working pressure of the container;
S is the allowable stress of the container material;
R is the distance from the centerline axis to the interior surface; and,
t is the thickness of the tubular body.
2 . The freight container as defined in claim 1 , wherein the first and second end members are welded to the body, and,
wherein the minimum thickness of the body and the operating pressure of the freight container are related by the equation:
P
=
(
2
*
S
*
E
*
t
)
(
R
-
0.4
t
)
where
;
P is the working pressure of the container;
S is the allowable stress of the container material;
E is the efficiency of the weld joint;
R is the inside radius of the body; and,
t is the minimum thickness of the body.
3 . The freight container as defined in claim 2 , wherein the maximum working pressure is substantially 350 PSI.
4 . The freight container as defined in claim 2 , wherein the maximum working pressure is substantially equal to or less than 342 PSI.
5 . The freight container as defined in claim 2 , wherein the minimum thickness of the shell is substantially 0.276 inches.
6 . The freight container as defined in claim 2 , wherein the body is constructed from ASME SA-516 Grade 70 carbon steel.
7 . The freight container as defined in claim 2 , wherein the body is roll-formed into a generally cylindrical container having a longitudinal seam, and, wherein the longitudinal seam is fusion welded.
8 . The freight container as defined in claim 2 , wherein the first and second end members are generally curved, and,
wherein the orientation of the first and second end members is convex with respect to the operating pressure within the container.
9 . The freight container as defined in claim 8 , wherein the first and second end members are fusion welded to the body.
10 . The freight container as defined in claim 9 , wherein first and second end members respectively form lap joints with distal ends of the body.
11 . A freight container for transporting associated hazardous substances under pressure, comprising:
a generally tubular body; first and second end members are welded to distal ends of the body; at least a first valve for adding fluid to the freight container under pressure; and, wherein the minimum thickness of the body and the operating pressure of the freight container are related by the equation:
(S*E*t)
P
=
(
R
+
0.6
t
)
where
;
P is the working pressure of the container;
S is the allowable stress of the container material;
E is the efficiency of the weld joint;
R is the inside radius of the body; and,
t is the minimum thickness of the body.
12 . The freight container as defined in claim 11 , wherein the minimum thickness of the body and the operating pressure of the freight container are related by a combination of a first equation:
P
=
(
2
*
S
*
E
*
t
)
(
R
-
0.4
t
)
and at least a second equation,
P
=
(
S
*
E
*
t
)
(
R
+
0.6
t
)
where
;
P is the working pressure of the container;
S is the allowable stress of the container material;
E is the efficiency of the weld joint;
R is the inside radius of the body; and,
t is the minimum thickness of the body.
13 . The freight container as defined in claim 12 , wherein the first and at least a second equation define a range of body thicknesses for a given operating pressure.
14 . The freight container as defined in claim 12 , wherein the maximum working pressure is substantially equal to or less than 342 PSI.
15 . The freight container as defined in claim 12 , wherein the minimum thickness of the shell is substantially 0.276 inches.
16 . The freight container as defined in claim 12 , wherein the first and second end members are generally curved having a curvature radius; and,
wherein the first and second end members are fusion welded to the body.
17 . The freight container as defined in claim 16 , wherein the first and second end members are positioned inside the body at distal ends respectively forming lap joints.
18 . The freight container as defined in claim 16 , wherein the first and second end members are convex with respect to the operating pressure of the freight container.
19 . The freight container as defined in claim 18 , wherein the thickness of the first and second end members is calculated by:
P =((2 *S*E*t 1 )/( M*L o )− t 1 ( M− 0.2))/1.67 where; P is the working pressure of the container; S is the allowable stress of the material; E is the efficiency of the weld joint; t 1 is the minimum thickness of the first and second end members; M is a scalar factor; and, L o is the curvature radius of the first and second end members.
20 . The freight container as defined in claim 19 , wherein the curvature radius L o is in the range of 27 inches to 33 inches.Join the waitlist — get patent alerts
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