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Streatham Pumping Station
| Firmenname | Streatham Pumping Station |
| Ortssitz | London |
| Ortsteil | Streatham |
| Straße | Conyer's Raod 68 |
| Postleitzahl | SW16 6LT |
| Art des Unternehmens | Wasserpumpwerk |
| Anmerkungen | Teil der "Southwark and Vauxhall Water Works" (s.d.). Erbaut nach den Plänen von James William Restler (1851-1918). Das kreisrunde Maschinenhaus hat einen radialen Laufkatzenkran, dessen Bahn sich um eine Mittelsäule dreht. Unmittelbar daneben ist der rechteckige, 140' tiefe Pumpenschacht. Der Brunnen ist 244' tief und besteht aus gußeisernen Ringen. |
| Quellenangaben | http://www.gracesguide.co.uk/Southwark_and_Vauxhall_Water_Co [Masse: Pompes (1906) 168] |
| Zeit |
Ereignis |
| 1898 |
Erbaut nach den Plänen von James William Restler, M. Inst. C.E., Ingenieur der "Southwark and Vauxhall Water Co" und erbaut von "James Watt & Co." (als vmtl. letztes Projekt des Unternehmens). |
| Produkt |
ab |
Bem. |
bis |
Bem. |
Kommentar |
| Trinkwasserförderung |
1898 |
Beginn |
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Zeit = 1: Zeitpunkt unbekannt
| Zeit |
Bezug |
Abfolge |
andere Firma |
Kommentar |
| 1898 |
Nebenwerk |
zuvor |
Southwark and Vauxhall Water Works |
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| ZEIT | 1898 |
| THEMA | Beschreibung |
| TEXT | The pumping plant at the Streatham Works is from the designs of Mr. J. W. Restler, M. Inst. C. B., the engineer to the company, and was constructed by Messr. James Watt and Co., Soho. It was, we believe, the last work done by the old firm. It consists of two sets of triple-expansion horizontal engines gearing into countershafts, each countershaft being connected by means of cranks at either end to a set of deep well pumps, and a bucket-and-plunger pump. The engine is of the two-crank type, the high-pressure and intermediate cylinders being arranged tandem, the cranks being set at right angles. The diameters of the cylinders are 8 3/4 in., 13 in., and 25in., with a stroke of 2 ft. The cylinders, together with the whole of the valve chests, cylinder covers, &c., are provided with
steam jackets, having separate steam and drain pipes to each. The high-pressure valve chest i-,
fitted with adjustable slide and cut-off valves of the Meyer type. The engine crank shaft is 6 in. diameter, in two parts and the countershaft is 8 in. diameter. Cranks are fitted at the end
of each countershaft, and these cranks are connected by means of rods to the well pumps and pressure pumps. The engine bed-plate is of massive construction, and is provided with pedestals for the shafts, having three-part brasses with wedge adjustments. A surface condenser to each engine is placed on the basement floor, and the deliveries from the well pumps are passed through them, a bye-pass pipe with valve being fitted on the delivery pipe in order to regulate
the amount of circulating water going through the condenser. The air and feed pumps are worked from cranks on the tail end of the engine shaft, and they are mounted over a hot well tank. Each tank is provided with a series of zinc trays, covered with flannel, which are used as a feed-water filter. An air charging pump for the purpose of renewing the supply of air to the air vessels is likewise fitted and worked by the air-pump rod. The gearing between the engine shaft and countershaft consists of a cast steel helical spur wheel and pinion, the pinions being sandwiched between the coupling flanges of the engine shafts. The diameters of the wheel and pinion are 8 ft. and 12ft. respectively, the teeth being 3 8/16 in. pitch, 8 in. wide, and shrouded to the pitch line. The well pumps are worked by strong cast steel bell cranks or cruciform section, fitted with polished tension bars, and mounted on strong pedestals over the well, the bell cranks are worked from the countershaft cranks by means of tubular steel trussed
connecting-rods. The bell cranks themselves are connected by built-up rods of H-section. All the connecting-rod ends are of marine pattern, having phosphor-bronze bearings. The pump connecting-rods are attached to steel crossheads having roller guides, the pump rods being connected by means of screw couplings to the crossheads. The well pumps are of the double-bucket single-acting type, one bucket working below the other in the same pump barrel. There is an outer tubular pump rod with an inner rod working through it, the outer rod being connected to the upper bucket and the inner rod to the lower bucket. The lengths of pump rod are connected by screwed sockets, those on the outer rod being split and provided with two bolts in each for locking purposes. Lignum vitre bushes are fixed at intervals inside the tubular rod. The rods are attached directly to the valves, which are in gun-metal of mushroom form, the bucket being of cast iron turned an accurate fit to the barrel. The stroke of each bell crank is 5ft., and as they work in opposite directions the total travel of the buckets from each other is l0 ft. The pumps are l5 in. diameter, the barrels being of cast iron; the barrels are hung from the rising main which is 22 in. diameter, of wrought iron. These rising mains are carried up to within 50ft. of the top of the well, where they terminate in cast iron pump heads with glands and stuffing-boxes which are supported on girders across the top of the well cylinders from the pump head the rising mains are reduced to 15 in. diameter, of cast iron, and they are carried thence to the top of the well, and after passing through the condenser, terminate in two glazed brick tanks, which are constructed adjacent to the engine house. The pressure pumps, which are of the bucket-and-plunger type, are made of the same capacity as the well pumps, and have their suctions connected to the tanks into which the well pumps deliver, the 15in. deliveries from the pressure pumps being taken to two air vessels, and
thence connected to one of the company's trunk mains of 42 in. diameter which passes close to the pumping station. The well and pressure pumps being made of equal capacity, the draught of water from tho tanks is almost equal to that delivered into them, but in order to guard against the overflow of the tanks, or the emptying of the same, should the well and pressure pumps not be working in unison, bye-pass valves and pipes are provided, and a warning gauge and bell are fitted in the engine-house to call attention should the tank become too full or the water too low. The pressure pumps are worked from cranks and connecting rods at one end of each of the two countershafts the connecting rod actuating the pump being carried down to the bottom of the
plunger. The pressure pump buckets are 2 ft. 6 in. in diameter, and the plunger 1 ft. 9 in.,the
stroke being 2 ft. 6 in. The bucket and suction valves are of the four-beat type, and are of gun-metal; the valve seat body is of cast iron, with gun-metal seating rings fixed to them by the means of screws. The engine-room, which we illustrated last week which is circular in plan,
is provided with a traveller which rotates around a central column, and is worked by hand by means of chains from below, and is capable of commanding any part of the engine, and pressure pumps. A tower is erected over the well and well pump gear, the tower being of sufficient height to enable the long lengths of pump rod to be drawn up into it. The well pumps are at present placed at a depth of 140ft. from the surface, and work at an average speed of 12 strokes per minute, the two pumps delivering about 2,5 million gallons per day. The well, which
is driven to the chalk, is 244 ft. deep, and is lined throughout with cast iron cylinders, an other lining of brick lining being carried to a depth of 148 ft.; inside the brick lining, cast
iron cylinders, 9ft. diameter, are taken to a depth of 190ft., and the inner cast iron lining, 7 ft. 6 in. diameter, continues to the bottom of the well. From the bottom of the well a bore hole 28in. diameter was carried through the chalk to a depth of 810 ft.; this bore hole was reduced successively to 24 in., 20 in., 18 in., 15 in., and 4 in. diameter, to a total depth of 1271 ft. Water rises in the well to within about 50 ft. from the surface when the pumps are at rest, but when at work the pumps lower the water to about 100 ft. Steam at 160 lb. boiler pressure is supplied from Babcock and Wilcox boilers, four. of which together with un economiser, are placed in the boiler-house, adjoining the engine-house. The buildings, which comprise engine-bouse and tower, boiler-house, fitting shop, chimney shaft foreman's residence,
together with offices and stores, are built with gault brick facing., and Ham Hill stone, the arches being of red brick. |
| QUELLE | [Enigeneer, 29.04.1898, S. 400] |
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