Provided is a pressure vessel able to sustain a circular shape without deforming to ellipsoidal shape due to machining of side port apertures therein, and maintain pressures as high as 800-1,200 PSI. The pressure vessel is intended for use in seawater desalination by reverse osmosis, and comprises a
Provided is a pressure vessel able to sustain a circular shape without deforming to ellipsoidal shape due to machining of side port apertures therein, and maintain pressures as high as 800-1,200 PSI. The pressure vessel is intended for use in seawater desalination by reverse osmosis, and comprises a pipe body (1) formed by filament winding (FW), and is furnished with an occluding cover (2) at each end of the pipe body (1), the peripheral surface of the pipe body being furnished, inward from the occluding covers (2), with inflow/outflow parts (3) through which the fluid flows in or out. The pipe body (1) is constituted by a helical layer (4), hoop layers, and a seal layer (6) furnished as the innermost layer. The helical layer (4) is furnished with a divergent part (7) diverging away from the seal layer (6) and extending from a location outward from the occluding cover (2) to a location inward from the inflow/outflow part (3). The hoop layers are constituted by a first hoop layer (8) furnished between the divergent part (7) and the seal layer (6), and a second hoop layer (9) furnished at the outer circumference of the helical layer (4), and extending from a location outward from the occluding cover (2) to a location inward from the inflow/outflow part (3).
대표청구항▼
1. A pressure vessel for use in seawater desalination or water purification by reverse osmosis, comprising: a pipe body;an occluding cover at each end in the axial direction of the pipe body, for occluding the pipe body;inflow/outflow parts provided at a peripheral surface of the pipe body at a loca
1. A pressure vessel for use in seawater desalination or water purification by reverse osmosis, comprising: a pipe body;an occluding cover at each end in the axial direction of the pipe body, for occluding the pipe body;inflow/outflow parts provided at a peripheral surface of the pipe body at a location inward from the occluding covers in the pipe body axial direction, wherein the inflow/outflow parts are configured for fluid to flow in or out from the peripheral surface of the pipe body,wherein the pipe body comprises: a helical layer consisting of helically winded fibers,hoop layers consisting of hoop wound fibers, anda seal layer as the innermost layer,the helical layer including, at each end in the axial direction of the pipe body, a divergent part diverging outward from the seal layer in the circumferential direction and extending from at least a location outward from the occluding cover in the pipe body axial direction to a location inward from the inflow/outflow part in the pipe body axial direction,the hoop layers including a first hoop layer disposed between the seal layer and the divergent part of the helical layer, and a second hoop layer disposed at the outer circumference of the helical layer, and extending from a location outward from the occluding cover in the pipe body axial direction to a location inward from the inflow/outflow part in the pipe body axial direction. 2. The pressure vessel according to claim 1, wherein the seal layer comprises a base material having a randomly isotropic fiber orientation, and a matrix resin identical to the matrix resin of the helical layer and the hoop layers. 3. The pressure vessel according to claim 2, wherein the resin content of the seal layer is greater than the resin content of the helical layer and the hoop layers. 4. The pressure vessel according to claim 3, wherein the resin content of the seal layer is set to 40-85 wt %, and the resin content of the helical layer and the hoop layers is set to 20-30 wt %. 5. The pressure vessel according to claim 2, wherein the seal layer includes a layer comprising a glass nonwoven and the matrix resin. 6. The pressure vessel according to claim 2, wherein the seal layer is constituted by a first seal layer comprising a glass nonwoven and the matrix resin, and a second seal layer comprising a polyester nonwoven and the matrix resin. 7. The pressure vessel according to claim 2, wherein the seal layer is a continuously winded tape on a mandrel. 8. The pressure vessel according to claim 5, wherein the seal layer is continuously winded tape on a mandrel. 9. The pressure vessel according to claim 6, wherein the seal layer is a continuously winded tape on a mandrel. 10. The pressure vessel according to claim 1, wherein the helical layer, in sections thereof other than the divergent part, contacts the seal layer. 11. The pressure vessel according to claim 5, wherein the helical layer, in sections thereof other than the divergent part, contacts the seal layer. 12. The pressure vessel according to claim 6, wherein the helical layer, in sections thereof other than the divergent part, contacts the seal layer. 13. The pressure vessel according to claim 7, wherein the helical layer, in sections thereof other than the divergent part, contacts the seal layer. 14. The pressure vessel according to claim 8, wherein the helical layer, in sections thereof other than the divergent part, contacts the seal layer. 15. The pressure vessel according to claim 9, wherein the helical layer, in sections thereof other than the divergent part, contacts the seal layer.
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이 특허에 인용된 특허 (4)
Newhouse Norman L. (Lincoln NE) Veys Ronald B. (Lincoln NE) Tiller Dale B. (Lincoln NE), Boss for a filament wound pressure vessel.
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