Proportioning system |
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| 申请号 | US27811972 | 申请日 | 1972-08-04 | 公开(公告)号 | US3820557A | 公开(公告)日 | 1974-06-28 |
| 申请人 | WARTMAN L; | 发明人 | WARTMAN L; | ||||
| 摘要 | This invention is a system for injecting a substance into a flowing stream of fluid; specifically, it is a system for increasing the water-carrying capacity of fluid systems by introducing a drag-reducing polymer into the turbulent aqueous stream in the system. | ||||||
| 权利要求 | 1. A system for injecting a substance into a fluid stream comprising a. a conduit in which the stream is confined and through which it flows in one direction, b. an inert structure positioned in said conduit and having a plurality of pairs of opposed parallel surfaces separated from each other and held parallel to the direction of flow, and c. a quantity of the substance to be injected into the stream deposited on said surfaces. 2. A system as recited in claim 1 wherein the conduit is part of and the fluid stream is the working fluid in a fire extinguisher sprinkler system. 3. A system as recited in claim 1 wherein the substance is a hydrodynamic drag reducing agent. 4. A system as recited in claim 1 wherein the substance is a high molecular weight polymer. 5. A system as recited in claim 1 wherein the substance is poly(ethylene oxide) having an average molecular weight greater than 1 X 106. 6. A system as recited in claim 1 wherein the substance is a poly(acrylamide) having an average molecular weight greater than 1 X 106. 7. A system as recited in claim 1, wherein the said distance is equal to or greater than one-eighth inch. 8. A system as recited in claim 1, wherein the substance is deposited on the surfaces to a thickness of 0.001 to 0.050 inches inclusive. 9. A system as recited in claim 1, wherein the said distance is 1/8 to 1/4 inches inclusive. 10. A system as recited in claim 1, wherein each surface is connected to another surface thereby forming an angle, and at least half of the angles thus formed in the structure are greater than acute angles. 11. A system for injecting a substance chosen from the group consisting of polymers having a molecular weight greater than 1 X 106 into a fluid stream of a fire extinguishing system comprising a. a conduit in which the stream is confined and through which it flows in a direction, b. an inert structure positioned in said conduit and having a plurality of pairs of opposed parallel surfaces separated from each other by a distance of 1/8 to 1/4 inch inclusive and held parallel to the direction of flow, each surface being connected to another surface by an angle greater than an acute angle, and c. a quantity of the substance to be injected into the stream deposited on said surfaces to a thickness of 0.001 to 0.050 inches inclusive. |
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