tailieunhanh - Five Hundred and Seven Mechanical Movements Episode 12
Tham khảo tài liệu 'five hundred and seven mechanical movements episode 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Mechanical Movements. 105 430. Overshot water-wheel. I 436. Jonval turbine. The sliutes are arranged on the outside of a drum radial to a common center and stationary within the trunk or casing b. The wheel f is made in nearly the same way the buckets exceed 4 1 tl 111 X in number those of the shutes and are set 432. Breast-wheel. This holds interme- 1 diate place between overshot and undershot at a sliẵht tange t ins ad of radially and wheels has float-boards like the former urve generally used is tbat of the cy- . r 1 t__ _ . . cloid or parabola. I but the cavities between are converted into r buckets by moving ỉn a channel adapted to circumference and width and into which water enters nearly at the level of axle. 437- Volute wheel having radial vanes a ị against which the water impinges and car- ries the wheel around. The scroll or volute 433. Horizontal overshot water-wheel. casing by confines the water in such a man- ner that it acts against the vanes all around the wheel. By the addition of the inclined 434. A plan view of the Fourneyron tur- 1 7 1 T 1 buckets Cy Cy at the bottom the water is bine water-wheel. In the center are a num- . . . r_ _ made to act with additional force as it ber of fixed curved u shutes or guides A _ . . .J t escapes through the openings of said which direct the water against the buckets kuckcts of the outer wheel B which revolves and the water discharges at the circumference. Ị 438. Barkers or reaction mill. Rotary 435. Warren s central discharge turbine motion of central hollow shaft is obtained plan view. The guides ay are outside and by the reaction of the water escaping at the wheel by revolves within them discharg- the ends of its arms the rotation being in ing the water at the center. I a direction the reverse of the escape. Mechanical Movements. 107 439. A method of obtaining a reciprocating motion from a continuous fall of water by means of a valve in the .
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