High-Pressure System at Brooklyn.

High-Pressure System at Brooklyn.

在纽约省的Borough Ol Brooklyn安装的新型高压系统旨在保护TNE业务部分的1,360英亩的面积。由TNE系统覆盖的部分拥有沿着TNE Wateriront Trom The Erie Basin延伸到Navyyard和Inland作为Flatbush Avenue的地区，这包括购物区，其中首席高办公楼位于其中。这两家抽水站位于乔洛尔卡·周一和弗曼街，圣爱德华兹和威洛比街道 - 后者是储备站，尚未立即运作的街区。在主站将是五个泵;在另一个中，三。每个泵将提供六行水管，5°°加热。在330 11的压力下一分钟的水到Sq。泵组合可以放置35,000,000升。二十四小时的火上的水。如果安装了另外六个泵，则可以在膨胀时抛出的水将被升至61,250,000加仑。主站以30英寸用水供应。 line connected with the 48-111. main in Willoughby street and a 24-in. line connected with the 24-in. main in Furman street, which, in its turn, is fed by the 48-in. main in Atlantic avenue. It will soon be connected with the river by three 24-in. suction-mains. The reserve station is furnished with water by two 20-in. mains from the Willoughby street main and a 30-in. main in Raymond street. The pumps are run by electricity furnished by the Edison Electric company under a city contract. Each pump takes 6.600 volts to run its 8oo-horsepower motor. The pumps can be set at work upon a moment's notice, and almost instantly the pressure in the mains rises to what is required by the emergency. A private telephone system will connect the stations with all parts of the protected area, and the firemen can have the pressure raised or lowered, just as they want it, without a moment's delay. The pressure can also be regulated by the firemen at the hydrants. There are about twenty-two miles of special 20-iu. to 8-in. mains. At all intersections there are gates, so as to admit of repairs being made without disarranging the system. The pipes have been tested so as to withstand a pressure of 700 lb. to the sq. in. They arc laid 5 ft. below the surface—that is, a depth of 1½ ft. below the frost-line. Seven hundred special hydrants have been set; their diameter is to in.: their connections, four, except in the case of the firebcat connection-posts, which have two nozzles each. The openings of the connections on the four nozzle-posts arc 3-in. in diameter in the case of three and 4in the case of one. For high-office service a stream can be forced 700 ft. up through the standpipes. In some of these offices the high-pressure system can be coupled with a private pumping system, which, however, can be done as effectively and as easily by coupling tire engines to these pumps. This high-pressure system, it must be remembered, is not without its embarrassing conditions for the firemen, who certainly will not be in a position to handle the water at the maximum pressure. Even if the hose of the department can stand the strain—a somewhat doubtful supposition—-it is certain that it could not be controled under the pressure with the available appliances. A pipe carrying a stream of water under a pressure of 300 lb. needs something like a gun carriage to keep it in position. If a misdirected stream or one thrown from hose that had got away from the firemen ever came in contact with some wall or building or missed its aim in any way, it would destroy it as certainly as the fiercest fire, which does not always cause the collapse of walls. An unofficial test of the system was recently made with oiie pump at a point two and a half m.les from the reserve station. Six streams were throwm, the average pressure at the station being 190 lb., which friction reduced to 170 lb. at the posts and no lb. at the nozzles of the 100-ft. lines of hose. With two pumps and eleven streams the pressure of 300 lb. was found to be 210 lb. at the posts and 150 at the ends of the 100-ft. lines of hose. Seven thousand seven hundred gal. were delivered per minute. While the hose stood the test very as it twisted and wriggled about, the firemen had their work set to control it. Work upon the system was begun in 1902. The mains cost $770,000; the hydrants, $75,000; the land for the stations, $80,500; the station supplymains, $17,000; the main station, $64,51x1; its equipment, $111,000; other incidentals, $5,500; the reserve station cost $45,500; ils equipment, with $4,500 for incidentals, and the salt water mains, $25,000 total, $1,263,000. The stations are plain brick structures, intended only for utility.

在纽约省的Borough Ol Brooklyn安装的新型高压系统旨在保护TNE业务部分的1,360英亩的面积。由TNE系统覆盖的部分拥有沿着TNE Wateriront Trom The Erie Basin延伸到Navyyard和Inland作为Flatbush Avenue的地区，这包括购物区，其中首席高办公楼位于其中。这两家抽水站位于乔洛尔卡·周一和弗曼街，圣爱德华兹和威洛比街道 - 后者是储备站，尚未立即运作的街区。在主站将是五个泵;在另一个中，三。每个泵将提供六行水管，5°°加热。在330 11的压力下一分钟的水到Sq。泵组合可以放置35,000,000升。二十四小时的火上的水。如果安装了另外六个泵，则可以在膨胀时抛出的水将被升至61,250,000加仑。主站以30英寸用水供应。 line connected with the 48-111. main in Willoughby street and a 24-in. line connected with the 24-in. main in Furman street, which, in its turn, is fed by the 48-in. main in Atlantic avenue. It will soon be connected with the river by three 24-in. suction-mains. The reserve station is furnished with water by two 20-in. mains from the Willoughby street main and a 30-in. main in Raymond street. The pumps are run by electricity furnished by the Edison Electric company under a city contract. Each pump takes 6.600 volts to run its 8oo-horsepower motor. The pumps can be set at work upon a moment's notice, and almost instantly the pressure in the mains rises to what is required by the emergency. A private telephone system will connect the stations with all parts of the protected area, and the firemen can have the pressure raised or lowered, just as they want it, without a moment's delay. The pressure can also be regulated by the firemen at the hydrants. There are about twenty-two miles of special 20-iu. to 8-in. mains. At all intersections there are gates, so as to admit of repairs being made without disarranging the system. The pipes have been tested so as to withstand a pressure of 700 lb. to the sq. in. They arc laid 5 ft. below the surface—that is, a depth of 1½ ft. below the frost-line. Seven hundred special hydrants have been set; their diameter is to in.: their connections, four, except in the case of the firebcat connection-posts, which have two nozzles each. The openings of the connections on the four nozzle-posts arc 3-in. in diameter in the case of three and 4in the case of one. For high-office service a stream can be forced 700 ft. up through the standpipes. In some of these offices the high-pressure system can be coupled with a private pumping system, which, however, can be done as effectively and as easily by coupling tire engines to these pumps. This high-pressure system, it must be remembered, is not without its embarrassing conditions for the firemen, who certainly will not be in a position to handle the water at the maximum pressure. Even if the hose of the department can stand the strain—a somewhat doubtful supposition—-it is certain that it could not be controled under the pressure with the available appliances. A pipe carrying a stream of water under a pressure of 300 lb. needs something like a gun carriage to keep it in position. If a misdirected stream or one thrown from hose that had got away from the firemen ever came in contact with some wall or building or missed its aim in any way, it would destroy it as certainly as the fiercest fire, which does not always cause the collapse of walls. An unofficial test of the system was recently made with oiie pump at a point two and a half m.les from the reserve station. Six streams were throwm, the average pressure at the station being 190 lb., which friction reduced to 170 lb. at the posts and no lb. at the nozzles of the 100-ft. lines of hose. With two pumps and eleven streams the pressure of 300 lb. was found to be 210 lb. at the posts and 150 at the ends of the 100-ft. lines of hose. Seven thousand seven hundred gal. were delivered per minute. While the hose stood the test very as it twisted and wriggled about, the firemen had their work set to control it. Work upon the system was begun in 1902. The mains cost $770,000; the hydrants, $75,000; the land for the stations, $80,500; the station supplymains, $17,000; the main station, $64,51x1; its equipment, $111,000; other incidentals, $5,500; the reserve station cost $45,500; ils equipment, with $4,500 for incidentals, and the salt water mains, $25,000 total, $1,263,000. The stations are plain brick structures, intended only for utility.