A helium tank is a portable pressure vessel used to store and dispense helium gas for a variety of commercial and entertainment purposes

// Helium Tank
// A helium tank is a portable pressure vessel used to store and dispense helium gas for a variety of commercial and entertainment purposes
// Categories: Medical, Aerospace

// Set units
@settings(defaultLengthUnit = in)

tankHeight = 2.5ft
tankDiameter = 9
portDiameter = 1.25
boltSize = 1 / 4

tankSketch = sketch(on = YZ) {
  line1 = line(start = [var 0.63in, var 30in], end = [var 0.63in, var 29.4in])
  line2 = line(start = [var 0.63in, var 29.4in], end = [var 0.73in, var 29.4in])
  coincident([line1.end, line2.start])
  arc3 = arc(start = [var 0.82in, var 29.27in], end = [var 0.73in, var 29.4in], center = [var 0.73in, var 29.3in])
  coincident([line2.end, arc3.end])
  arc4 = arc(start = [var 0.82in, var 29.27in], end = [var 0.82in, var 28.86in], center = [var 1.38in, var 29.06in])
  coincident([arc3.start, arc4.start])
  arc5 = arc(start = [var 0.72in, var 28.72in], end = [var 0.82in, var 28.86in], center = [var 0.72in, var 28.82in])
  coincident([arc4.end, arc5.end])
  arc6 = arc(start = [var 0.72in, var 28.72in], end = [var 0.72in, var 28.52in], center = [var 0.72in, var 28.62in])
  coincident([arc5.start, arc6.start])
  arc7 = arc(start = [var 4.5in, var 24.75in], end = [var 0.72in, var 28.52in], center = [var 0.72in, var 24.75in])
  coincident([arc6.end, arc7.end])
  line8 = line(start = [var 4.5in, var 24.75in], end = [var 4.5in, var 1.5in])
  coincident([arc7.start, line8.start])
  arc9 = arc(start = [var 2.5in, var -0.5in], end = [var 4.5in, var 1.5in], center = [var 2.5in, var 1.5in])
  coincident([line8.end, arc9.end])
  line10 = line(start = [var 2.5in, var -0.5in], end = [var 0in, var -0.5in])
  coincident([arc9.start, line10.start])
  line11 = line(start = [var 0in, var -0.5in], end = [var 0in, var -0.37in])
  coincident([line10.end, line11.start])
  line12 = line(start = [var 0in, var -0.37in], end = [var 2.5in, var -0.37in])
  coincident([line11.end, line12.start])
  arc13 = arc(start = [var 2.5in, var -0.37in], end = [var 4.37in, var 1.5in], center = [var 2.5in, var 1.5in])
  coincident([line12.end, arc13.start])
  line14 = line(start = [var 4.37in, var 1.5in], end = [var 4.37in, var 24.75in])
  coincident([arc13.end, line14.start])
  arc15 = arc(start = [var 4.37in, var 24.75in], end = [var 1.3in, var 27.82in], center = [var 1.3in, var 24.75in])
  coincident([line14.end, arc15.start])
  line16 = line(start = [var 1.3in, var 27.82in], end = [var 0.53in, var 27.82in])
  coincident([arc15.end, line16.start])
  line17 = line(start = [var 0.53in, var 27.82in], end = [var 0.53in, var 30in])
  coincident([line16.end, line17.start])
  line18 = line(start = [var 0.53in, var 30in], end = [var 0.63in, var 30in])
  coincident([line17.end, line18.start])
  vertical(line8)
  horizontal(line10)
  vertical(line11)
  horizontal(line12)
  vertical(line14)
  horizontal(line16)
  vertical(line17)
  horizontal(line18)
  distance([line8.start, line8.end]) == 23.25in
  distance([line10.start, line10.end]) == 2.5in
  distance([line11.start, line11.end]) == 0.13in
  distance([line12.start, line12.end]) == 2.5in
  distance([line16.start, line16.end]) == 0.77in
  distance([line17.start, line17.end]) == 2.18in
  distance([line18.start, line18.end]) == 0.1in
}
tankRegion = region(segments = [tankSketch.line1])
tankRevolve = revolve(tankRegion, angle = 220deg, axis = Y)
hide(tankSketch)

valveBodyPlane = offsetPlane(XY, offset = tankHeight - 0.5)
valveBodySketch = sketch(on = valveBodyPlane) {
  circle1 = circle(start = [var 0.66in, var 0in], center = [var 0in, var 0in])
  coincident([circle1.center, ORIGIN])
  radius(circle1) == 0.66in
}
valveBodyRegion = region(segments = [valveBodySketch.circle1])
valveBody = extrude(valveBodyRegion, length = 1.5, tagEnd = $capEnd001)
  |> fillet(
       radius = 0.1,
       tags = [
         getCommonEdge(faces = [
           valveBodyRegion.tags.circle1,
           capEnd001
         ])
       ],
     )
  |> appearance(color = "#9a4618")
hide(valveBodySketch)

valvePortPlane = offsetPlane(YZ, offset = 0.001in)
valvePortSketch = sketch(on = valvePortPlane) {
  outerCircle = circle(start = [var 0.5in, var 30.3in], center = [var 0in, var 30.3in])
  radius(outerCircle) == portDiameter / 3
  innerCircle = circle(start = [var 0.46in, var 30.3in], center = [var 0in, var 30.3in])
  radius(innerCircle) == portDiameter / 3.25
  coincident([outerCircle.center, innerCircle.center])
}
valvePortRegion = region(point = [0.4in, 30.3in], sketch = valvePortSketch)
valvePort = extrude(valvePortRegion, length = 1.3)
  |> appearance(color = "#9a4618")
hide(valvePortSketch)

bracketPlane = offsetPlane(XY, offset = tankHeight * 0.67)

bracketSketch = sketch(on = bracketPlane) {
  outerLine1 = line(start = [var 0in, var 4.5in], end = [var -0.1in, var 4.5in])
  outerArc2 = arc(start = [var -0.1in, var 4.5in], end = [var -2.68in, var 3.69in], center = [var -0.1in, var 0in])
  coincident([outerLine1.end, outerArc2.start])
  outerArc3 = arc(start = [var -3.07in, var 3.93in], end = [var -2.68in, var 3.69in], center = [var -2.82in, var 3.89in])
  coincident([outerArc2.end, outerArc3.end])
  outerLine4 = line(start = [var -3.07in, var 3.93in], end = [var -2.85in, var 5.2in])
  coincident([outerArc3.start, outerLine4.start])
  outerArc5 = arc(start = [var -2.6in, var 5.41in], end = [var -2.85in, var 5.2in], center = [var -2.6in, var 5.16in])
  coincident([outerLine4.end, outerArc5.end])
  outerLine6 = line(start = [var -2.6in, var 5.41in], end = [var 2.6in, var 5.41in])
  coincident([outerArc5.start, outerLine6.start])
  outerLine8 = line(start = [var 2.85in, var 5.2in], end = [var 3.07in, var 3.93in])
  outerArc10 = arc(start = [var 2.68in, var 3.69in], end = [var 0.1in, var 4.5in], center = [var 0.1in, var 0in])
  outerLine11 = line(start = [var 0.1in, var 4.5in], end = [var 0in, var 4.5in])
  coincident([outerArc10.end, outerLine11.start])
  coincident([outerLine11.end, outerLine1.start])
  horizontal(outerLine1)
  horizontal(outerLine6)
  horizontal(outerLine11)
  distance([outerLine1.start, outerLine1.end]) == 0.1in
  distance([outerLine6.start, outerLine6.end]) == 5.2in
  distance([outerLine11.start, outerLine11.end]) == 0.1in

  innerLine1 = line(start = [var 0in, var 4.63in], end = [var -0.1in, var 4.63in])
  innerArc2 = arc(start = [var -0.1in, var 4.63in], end = [var -2.75in, var 3.79in], center = [var -0.1in, var 0in])
  coincident([innerLine1.end, innerArc2.start])
  innerArc3 = arc(start = [var -2.95in, var 3.91in], end = [var -2.75in, var 3.79in], center = [var -2.82in, var 3.89in])
  coincident([innerArc2.end, innerArc3.end])
  innerLine4 = line(start = [var -2.95in, var 3.91in], end = [var -2.72in, var 5.18in])
  coincident([innerArc3.start, innerLine4.start])
  innerArc5 = arc(start = [var -2.6in, var 5.28in], end = [var -2.72in, var 5.18in], center = [var -2.6in, var 5.16in])
  coincident([innerLine4.end, innerArc5.end])
  innerLine6 = line(start = [var -2.6in, var 5.28in], end = [var 2.6in, var 5.28in])
  coincident([innerArc5.start, innerLine6.start])
  innerLine8 = line(start = [var 2.72in, var 5.18in], end = [var 2.95in, var 3.91in])
  innerArc10 = arc(start = [var 2.75in, var 3.79in], end = [var 0.1in, var 4.63in], center = [var 0.1in, var 0in])
  innerLine11 = line(start = [var 0.1in, var 4.63in], end = [var 0in, var 4.63in])
  coincident([innerArc10.end, innerLine11.start])
  coincident([innerLine11.end, innerLine1.start])
  horizontal(innerLine1)
  horizontal(innerLine6)
  horizontal(innerLine11)
  distance([innerLine1.start, innerLine1.end]) == 0.1in
  distance([innerLine6.start, innerLine6.end]) == 5.2in
  distance([innerLine11.start, innerLine11.end]) == 0.1in

  arc1 = arc(start = [var 2.85in, var 5.2in], end = [var 2.6in, var 5.41in], center = [var 2.6in, var 5.16in])
  arc2 = arc(start = [var 2.72in, var 5.18in], end = [var 2.6in, var 5.28in], center = [var 2.6in, var 5.16in])
  coincident([arc2.center, arc1.center])
  coincident([arc2.start, innerLine8.start])
  arc3 = arc(start = [var 2.68in, var 3.69in], end = [var 3.07in, var 3.93in], center = [var 2.82in, var 3.89in])
  coincident([arc3.end, outerLine8.end])
  arc4 = arc(start = [var 2.75in, var 3.79in], end = [var 2.95in, var 3.91in], center = [var 2.82in, var 3.89in])
  coincident([arc4.start, innerArc10.start])

  // Close outer and inner boundaries robustly for region detection.
  coincident([outerLine6.end, arc1.end])
  coincident([arc1.start, outerLine8.start])
  coincident([arc3.start, outerArc10.start])
  coincident([innerLine6.end, arc2.end])
  coincident([innerLine8.end, arc4.end])
}
bracketRegion = region(point = [0in, 5.35in], sketch = bracketSketch)
bracketBody = extrude(bracketRegion, length = 1, symmetric = true)
hide(bracketSketch)

strapSleeveOuterSketch = sketch(on = bracketPlane) {
  circle1 = circle(start = [var 4.85in, var 0.0625in], center = [var 0in, var 0.0625in])
  radius(circle1) == 4.75
}
strapSleeveOuterRegion = region(segments = [strapSleeveOuterSketch.circle1])
strapSleeveOuter = extrude(strapSleeveOuterRegion, length = 0.8, symmetric = true)
hide(strapSleeveOuterSketch)

strapSleeveInnerSketch = sketch(on = bracketPlane) {
  circle1 = circle(start = [var 4.75in, var 0.0625in], center = [var 0in, var 0.0625in])
  radius(circle1) == 4.65
}
strapSleeveInnerRegion = region(segments = [strapSleeveInnerSketch.circle1])
strapSleeveInner = extrude(strapSleeveInnerRegion, length = 0.82, symmetric = true)
hide(strapSleeveInnerSketch)
strapSleeve = subtract([strapSleeveOuter], tools = [strapSleeveInner], legacyMethod = true)
bracketSleeve = subtract([bracketBody], tools = [strapSleeve], legacyMethod = true)

mountingHolePlane = offsetPlane(XZ, offset = -tankDiameter / 1.9)
mountingHoleSketch = sketch(on = mountingHolePlane) {
  circle1 = circle(start = [var 2.13in, var 20.1in], center = [var 2in, var 20.1in])
  diameter(circle1) == boltSize
}
mountingHoleRegion = region(segments = [mountingHoleSketch.circle1])
mountingHole = extrude(mountingHoleRegion, length = -5)
hide(mountingHoleSketch)
mountingHolePair = patternLinear3d(
  mountingHole,
  instances = 2,
  distance = tankDiameter / 2.25,
  axis = [-1, 0, 0],
)
bracket = subtract([bracketSleeve], tools = [mountingHolePair], legacyMethod = true)
  |> appearance(color = "#cd0404")

mountingStrapOuterSketch = sketch(on = bracketPlane) {
  circle1 = circle(start = [var 4.84in, var 0.0775in], center = [var 0in, var 0.0775in])
  radius(circle1) == tankDiameter / 1.9
}
mountingStrapOuterRegion = region(segments = [mountingStrapOuterSketch.circle1])
mountingStrapOuter = extrude(mountingStrapOuterRegion, length = 0.75, symmetric = true)
hide(mountingStrapOuterSketch)

mountingStrapInnerSketch = sketch(on = bracketPlane) {
  circle1 = circle(start = [var 4.74in, var 0.0775in], center = [var 0in, var 0.0775in])
  radius(circle1) == tankDiameter / 1.9 - 0.1
}
mountingStrapInnerRegion = region(segments = [mountingStrapInnerSketch.circle1])
mountingStrapInner = extrude(mountingStrapInnerRegion, length = 0.77, symmetric = true)
hide(mountingStrapInnerSketch)
mountingStrap = subtract([mountingStrapOuter], tools = [mountingStrapInner], legacyMethod = true)
  |> appearance(color = "#210d03")

brackets = patternLinear3d(
  bracket,
  instances = 2,
  distance = tankHeight * 0.33,
  axis = [0, 0, -1],
)

straps = patternLinear3d(
  mountingStrap,
  instances = 2,
  distance = tankHeight * 0.33,
  axis = [0, 0, -1],
)


Helium Tank

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