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    Stress relieved welds in positive expulsion fuel tanks with elastomeric diaphragm
    1.
    发明授权
    Stress relieved welds in positive expulsion fuel tanks with elastomeric diaphragm 有权

    公开(公告)号：US10139047B2

    公开(公告)日：2018-11-27

    申请号：US14797352

    申请日：2015-07-13

    Applicant: Keystone Engineering Company

    Inventor： Wayne H. Tuttle ,  Ian Ballinger

    IPC: B23K26/00 ,  F17C1/02 ,  F17C13/00 ,  C22C14/00 ,  C22F1/18 ,  C21D1/30 ,  C21D1/42 ,  C21D1/74 ,  B64G1/40

    Abstract: A metallic positive expulsion fuel tank with stress free weld seams may include a first hemispherical shell with a first edge; a pressurized gas inlet attached to the first hemispherical shell; and a metallic cylinder with first and second edges attached to the first hemispherical shell along matching first edges by a first weld seam. The tank may also include a second hemispherical shell with a first edge attached to a fuel outlet fixture. An elastomeric diaphragm may be attached to the fuel outlet fixture on the second hemispherical shell. The second hemispherical shell may be attached to the second edge of the metallic cylinder along matching edges by a second weld seam thereby forming a positive expulsion fuel tank with two interior chambers separated by the elastomeric diaphragm. The first and second weld seams may be subjected to a localized post-weld stress relief heat treatment in which heating of the tank is confined to a distance of 2 inches (5.08 cm) of the first weld seam and a distance of 2 inches (5.08 cm) of the second weld seam such that the stresses in the first and second weld seams are relieved and the elastomeric diaphragm is unaffected by the heat treatment.

    STRESS RELIEVED WELDS IN POSITIVE EXPULSION FUEL TANKS WITH ROLLING METAL DIAPHRAGMS
    3.
    发明申请
    STRESS RELIEVED WELDS IN POSITIVE EXPULSION FUEL TANKS WITH ROLLING METAL DIAPHRAGMS 审中-公开
    具有滚动金属膜片的正压式燃油箱中的应力消除

    公开(公告)号：US20160325620A1

    公开(公告)日：2016-11-10

    申请号：US14706181

    申请日：2015-05-07

    Applicant: Keystone Engineering Company

    Inventor： Ian Ballinger ,  Wayne H. Tuttle

    IPC: B60K15/04 ,  C22F1/18 ,  C21D1/30 ,  C21D9/50 ,  C21D1/42 ,  B64G1/40 ,  B23K15/00 ,  B23K10/02 ,  B23K26/28 ,  B23K26/32 ,  B23K9/23 ,  C22C14/00 ,  B23K9/028

    Abstract: A metallic positive expulsion fuel tank with stress free weld seams may include a first hemispherical shell with a first edge; and a hemispherical rolling metal diaphragm with a first edge attached to the first hemispherical shell along matching first edges. A second hemispherical shell with a first edge may be attached to the first edge of the first hemispherical shell by a first weld seam thereby forming two interior chambers separated by the hemispherical rolling metal diaphragm. A pressurized gas inlet may be attached to the first hemispherical dome; and a fuel outlet fixture may be attached to the second hemispherical dome. The first weld seam may have been stress relieved by a localized post-weld heat treatment confined to an immediate vicinity of the first weld seam.

    Abstract translation: 具有无应力焊缝的金属正排出燃料箱可以包括具有第一边缘的第一半球壳; 以及半球形滚动金属隔膜，其第一边缘沿着匹配的第一边缘附接到第一半球形外壳。 具有第一边缘的第二半球壳可以通过第一焊缝附接到第一半球形壳体的第一边缘，从而形成由半球形滚动金属隔膜分隔开的两个内部腔室。 加压气体入口可以附接到第一半球形圆顶; 并且燃料出口固定件可以附接到第二半球形圆顶。 第一焊缝可能已经被限制在紧邻第一焊缝的局部焊后热处理所释放。

    METHOD AND APPARATUS FOR PERFORMING A LOCALIZED POST-WELD HEAT TREATMENT ON A THIN WALL METALLIC CYLINDER
    6.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING A LOCALIZED POST-WELD HEAT TREATMENT ON A THIN WALL METALLIC CYLINDER 有权
    在薄壁金属圆筒上执行局部焊后热处理的方法和装置

    公开(公告)号：US20150344987A1

    公开(公告)日：2015-12-03

    申请号：US14287975

    申请日：2014-05-27

    Applicant: Keystone Engineering Company

    Inventor： Wayne H. Tuttle

    IPC: C21D9/50 ,  H05B6/10 ,  C22C19/05 ,  C22F1/10 ,  C22F1/18 ,  H05B6/06 ,  C21D1/42

    CPC classification number: C21D9/50 ,  C21D1/42 ,  C21D11/00 ,  C21D2221/00 ,  C22C19/00 ,  C22C19/051 ,  C22C19/055 ,  C22C19/056 ,  C22F1/10 ,  C22F1/183 ,  H05B6/06 ,  H05B6/101 ,  Y02P10/253

    Abstract: A method of performing a localized post weld heat treatment on a weld seam in a thin wall metallic body may include attaching thermocouples to the outside surface of the weld seam and covering the weld seam with a thermal insulating blanket. Cooling bands are attached to the outside of the body on both sides of the weld seam. An inert atmosphere enclosure with inlet and exhaust ports is fitted over the weld seam, thermal insulating blanket, and cooling bands. A power supply and control system for an induction coil or coils situated in close proximity to the weld seam are actuated and the weld seam is subjected to a heat treatment without thermally affecting regions of the metallic body adjacent to the weld seam and external to the cooling bands.

    Abstract translation: 在薄壁金属体中的焊缝上执行局部焊后热处理的方法可以包括将热电偶附接到焊缝的外表面并用绝热毯覆盖焊缝。 冷却带附着在焊缝两侧的主体外侧。 带有入口和排气口的惰性气氛外壳安装在焊缝，隔热毯和冷却带上。 驱动位于紧邻焊缝的感应线圈或线圈的电源和控制系统，并且对焊缝进行热处理，而不会对金属体的与焊缝相邻的区域进行热处理，而在冷却之外 乐队。

    CENTER OF MASS CONTROL OF LIQUID TANKS FOR SPACECRAFT USE
    7.
    发明申请
    CENTER OF MASS CONTROL OF LIQUID TANKS FOR SPACECRAFT USE 审中-公开

    公开(公告)号：US20180281992A1

    公开(公告)日：2018-10-04

    申请号：US15562390

    申请日：2016-04-22

    Applicant: KEYSTONE ENGINEERING COMPANY

    Inventor： Robert Manning ,  Ian Ballinger ,  Wayne H. Tuttle

    IPC: B64G1/40 ,  F17C13/00

    Abstract: A rigid structure propellant management device (PMD) liquid storage tank includes an outer shell and internal structures inside the outer shell that include a plurality of vertical columns each made up of a stack of individual storage cells. Each of the storage cells has solid vertical sidewalls and top and bottom capillary windows that allow vertical liquid transfer between adjacent cells in a vertical column. The top and bottom capillary windows in each of the storage cells have permeabilities that result in a selected direction of liquid flow in each column. A piping and valve system may be connected to the top capillary window of a top storage cell and to the bottom capillary window of a bottom storage cell of each vertical column, configured to allow controlled liquid transfer between adjacent vertical columns so that locations of empty cells in the tank as liquid is drawn from the tank achieves a selected column by column drainage sequence and controls a center of mass of the tank.

    STRESS RELIEVED WELDS IN POSITIVE EXPULSION FUEL TANKS WITH ELASTOMERIC DIAPHRAGM
    9.
    发明申请
    STRESS RELIEVED WELDS IN POSITIVE EXPULSION FUEL TANKS WITH ELASTOMERIC DIAPHRAGM 审中-公开
    应力消除在积极展开燃油箱与弹性膜

    公开(公告)号：US20170016574A1

    公开(公告)日：2017-01-19

    申请号：US14797352

    申请日：2015-07-13

    Applicant: Keystone Engineering Company

    Inventor： Wayne H. Tuttle ,  Ian Ballinger

    IPC: F17C1/02 ,  B23K9/00 ,  B23K9/028 ,  B23K10/02 ,  B23K15/00 ,  B23K26/28 ,  C22C14/00 ,  C22F1/18 ,  C21D1/30 ,  C21D1/42 ,  C21D1/74 ,  B23K26/32 ,  B23K9/23 ,  B64G1/40 ,  F17C13/00

    CPC classification number: F17C1/02 ,  B64G1/402 ,  C21D1/30 ,  C21D1/42 ,  C21D1/74 ,  C22C14/00 ,  C22F1/183 ,  F17C13/002 ,  F17C13/008 ,  F17C2201/0128 ,  F17C2201/0185 ,  F17C2203/0636 ,  F17C2203/0646 ,  F17C2203/0648 ,  F17C2209/221 ,  F17C2209/232 ,  F17C2221/08 ,  F17C2223/0161 ,  F17C2227/0192 ,  F17C2260/011 ,  F17C2265/066 ,  F17C2270/0194 ,  Y02P10/253

    Abstract: A metallic positive expulsion fuel tank with stress free weld seams may include a first hemispherical shell with a first edge; a pressurized gas inlet attached to the first hemispherical shell; and a metallic cylinder with first and second edges attached to the first hemispherical shell along matching first edges by a first weld seam. The tank may also include a second hemispherical shell with a first edge attached to a fuel outlet fixture. An elastomeric diaphragm may be attached to the fuel outlet fixture on the second hemispherical shell. The second hemispherical shell may be attached to the second edge of the metallic cylinder along matching edges by a second weld seam thereby forming a positive expulsion fuel tank with two interior chambers separated by the elastomeric diaphragm. The first and second weld seams may be subjected to a localized post-weld stress relief heat treatment in which heating of the tank is confined to a distance of 2 inches (5.08 cm) of the first weld seam and a distance of 2 inches (5.08 cm) of the second weld seam such that the stresses in the first and second weld seams are relieved and the elastomeric diaphragm is unaffected by the heat treatment.

    Abstract translation: 具有无应力焊缝的金属正排出燃料箱可以包括具有第一边缘的第一半球壳; 连接到第一半球壳的加压气体入口; 以及金属圆筒，其第一和第二边缘通过第一焊缝沿着匹配的第一边缘附接到第一半球形壳体。 罐还可以包括第二半球形壳体，其第一边缘连接到燃料出口固定装置。 弹性体隔膜可以附接到第二半球形壳体上的燃料出口固定装置。 第二半球壳可以通过第二焊缝沿着匹配的边缘附接到金属圆筒的第二边缘，从而形成具有由弹性体隔膜分隔开的两个内部腔室的正向排出燃料箱。 第一和第二焊缝可以经受局部焊后应力消除热处理，其中罐的加热被限制在第一焊缝的2英寸（5.08cm）的距离和2英寸（5.08）的距离 cm），使得第一和第二焊缝中的应力被释放，并且弹性体隔膜不受热处理的影响。

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