Fig. 546.
Fig. 547.
Universal double-tube injector (original Korting injector). This instrument is the combination of two jets (see Figs. [545] and [546]); it is proportioned for extreme temperature and for quick and strong action, which includes maximum high suction. The discharge is into the upper jet, where the water receives the additional strong impulse to carry it into the boiler. The pressure and volume from the lower jet corresponds to the steam pressure, and this is as it should be to answer the requirements of the upper or forcing jet. The varying volume insures the proper working at high steam pressure as well as at low, and an increased pressure admits of increased high temperature.
The action of the injector is thus explained; its favorable operation is due to the double-tube principle; the pieces composing the Korting injector are shown in the numbered cuts, page 263, and the names of the parts are given below.
Number and name of piece. 1, Body; 2, handle lever; 3, side rods; 4, connecting fork; 5, cross head for shaft; 6, nuts for cross head; 7, starting shaft; 8, nuts; 9, yoke bar; 10, lower steam valve; 11, upper steam valve; 12, lower steam nozzle; 13, upper steam nozzle; 14, lower water nozzle; 15, upper water nozzle; 16, front body caps; 17, side body caps; 18, overflow nozzle; 19, check valve compressor; 20, overflow valve compressor; 21, stuffing-box; 22, fol. for stuffing-box; 23, nuts for stuffing-box; 24, cross head for overflow; 25, links for overflow; 26, pin for links; 27, screws; 28, bell cranks; 29, coupling nuts; 30, pipe unions; 31, spanner wrench; 32, sokt. nozzle wrench; 33, un. for cop. pipe.—Regulator complete replaces pieces 10 and 16.
Table.
| Size No. | Size of Iron Pipe. | Steam 50 lbs. | Steam 100 lbs. | Steam 150 lbs. | Size of Copper Pipe. | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Gals. | H. P. | Gals. | H. P. | Gals. | H. P. | ||||||
| 00 | 1⁄8 | 33 | 7 | 48 | 10 | 60 | 12 | 1⁄4 | |||
| 0 | 1⁄4 | 83 | 17 | 101 | 20 | 112 | 22 | 3⁄8 | |||
| 1 | 3⁄8 | 112 | 23 | 143 | 30 | 180 | 36 | 1⁄2 | |||
| 2 | 1⁄2 | 172 | 35 | 210 | 40 | 232 | 46 | 5⁄8 | |||
| 3 | } | 3⁄4 | { | 278 | 56 | 338 | 70 | 397 | 80 | } | 7⁄8 |
| 31⁄2 | 398 | 80 | 472 | 95 | 547 | 110 | |||||
| 4 | 1 | 533 | 108 | 622 | 125 | 720 | 150 | 11⁄8 | |||
| 5 | } | 11⁄4 | { | 675 | 136 | 802 | 160 | 922 | 190 | } | 11⁄2 |
| 6 | 825 | 165 | 990 | 200 | 1125 | 230 | |||||
| 7 | } | 11⁄2 | { | 1072 | 215 | 1372 | 289 | 1612 | 320 | } | 13⁄8 |
| 8 | 1388 | 280 | 1800 | 360 | 2115 | 430 | |||||
| 9 | } | 2 | { | 1688 | 340 | 2100 | 420 | 2475 | 500 | } | 21⁄4 |
| 10 | 2025 | 400 | 2438 | 500 | 2850 | 570 | |||||