| 摘要 |
1. Steam-jet device intended primarily for viscous liquid pumping, comprising the steam supply pipeline, steam distribution manifold fitted with two steam jet pumps comprising the convergent-divergent nozzle and the mixing chamber, where the steam jet pumps are installed at an angle to the steam distribution manifold, symmetrically against the steam distribution manifold axis and diametrically opposite against each other, wherein the steam distribution manifold is fitted with two additional steam jet pumps at an angle to the steam distribution manifold, symmetrically against the steam distribution manifold axis and diametrically opposite against each other forming two tiers of steam jet pumps, where the upper tier steam jet pumps are diametrically opposite at the right angle to the lower tier steam jet pumps, the upper tier steam jet pumps are inclined against the steam distribution manifold axis at an angle of 45 degree to 60 degree and the lower tier steam jet pumps are inclined against the steam distribution manifold axis at an angle of 65 degree to 80 degree , the jet pumps mixing chamber is of cylindrical shape, the outlet section of the nozzle is located in the mixing chamber at 3 to 5 mm distance from the chamber inlet section, the vertical distance between the upper and lower tier mixing chambers inlet sections is from 250 to 500 mm, the steam distribution lower part is fitted with the horizontal ring-shaped steam feeding pipeline section, where the mixing chambers inlet sections are located above this ring section, and the relation of the jet pumps mixing chambers to their diameter is from 10 to 13 and from 7 to 9 for the upper and lower tiers respectively. 2. The steam-jet device according to claim1, wherein the distance from the ring-shaped steam supply pipeline to the mixing chamber inlet section of the lower tier jet pumps is from 250 to 550 mm.
|
