Improvements in and relating to apparatus for controlling and measuring the flow of water, specially applicable for dealing with the flow of water from the ponds of cooling towers and the like

摘要

260,645. Robinson, P. J. May 28, 1925. Valves, applications and arrangements of.- Pipe lines A, Figs. 1 and 3, conveying water from the collecting-ponds C of cooling-towers or from the reservoirs of a town's water supply are connected through valves E to a basin B, Fig. 1, which is connected to one or more of the ponds or reservoirs through culverts each comprising two chambers J', J2 at different levels. The chambers J1, J2 communicate with one another through a lift valve E in the base of the upper chamber, and through a rectangular weir notch in the wall of the upper chamber, so that the flow may be measured when the valve is closed. The floor of the basin B is slightly above the level of the pipe main A, which is provided with upstanding seatings D for the valves E. These seatings may be integral with pipe lengths and may have ribs around which the concrete floor of the basin is moulded. The valves E are manipulated by chains G' which have several large links g1 to receive a cross-bar for holding the valves in adjustable open position. A bridge or platform F is provided above the basin and has openings f1 for the valves to pass through for inspection &c. The chains may be operated by movable pulley tackle g2. To measure the flow through any pipe main, the valves for other pipes below the basin are closed, and also the valve E in the culvert, the flow then being through the weir notch of the culvert. In order to relieve pressure on the valves E when shut, a valve M, Fig. 3, in a bye-pass pipe m1, m' between the basin and the main A is opened. The valves E may be held shut against upward pressure by means of a tubular strut K, Fig. 5. The upper end of the strut is provided with a screw and nut gear k2 or fitted with a jack bearing against a frame member k3 of a gantry. When the lifting-chain cannot readily be disconnected from the valve it may be passed through the strut.