Pre-solder DB25 Cups 1 > 자유게시판

The rotor velocity is 3000 rpm. The rated pump delivery is 8500 cu.m/h at a head of 200 m w.g., pace - a thousand rpm, electric motor output - 5500 kW. By bundling radio-frequency (RF) energy on the identical line with an electric present, shield control cable information could be transmitted without the need for a separate information line. The condensate of the steam spent in the turbines is conditioned within the ion-exchangers, heated in the heat exchangers of the regenerative heating system, deaerated and on passing through strainers is fed again by the electric feedwater pumps over feed pipelines to the separators of the circulating circuit. The supply pipelines convey water from the primary circulating pumps to the stress header. The equipment and pipelines are protected against extreme stress rise by a system of steam dumping facilities which dump excess steam into the turbine condensers or into the condensation pools of the accident isolation system.

The circulating circuit of the reactor is a system composed of fuel channels, steam/water and water strains, steam separators, main circulation pumps, strain, suction and distribution headers with related piping. The light water circulates over a closed circuit. The Ignalina nuclear energy plant, like all stations with RBMK reactors, has a direct cycle configuration - saturated steam formed within the reactor correct by passing the light water by the reactor core is fed to the turbine at a pressure of 6,5 MPa. Light water coolant is fed into the decrease end of the fuel channels. The coolant circulation distribution among the gas channels as a function of the core energy release is managed by shutoff control valves following the indications of flow meters mounted on the inlet of water provide line to each gas channel. Each loop comprises two horizontal kind steam separators interconnected on the water and steam sides. Steam is conveyed from every separator to the turbines over two steam strains. The steam piping is so organized that each steam separator is related with two turbines. The turbines are double-move tandem machines (one high-stress cylinder and 4 low-strain cylinders) with reheat. The thermal energy output of 1 unit is 4800 MW, the electrical energy capacity is 1500 MW.

Each unit incorporates two K-750-65/3000 turbines with 800 MW generators. The unit with one reactor incorporates two 750 MW turbines. The turbines are managed by cumputer-primarily based management system ASUT-750. 40-43 water supply lines are branched off each distribution header. The biological shield is product of carbon steel, serpentine crushed stone and gravel, concrete, sand, water. The gas channels are tubes whose lower and upper parts are fabricated from corrosion-resistant steel, while the central part is fabricated from Zircalloy. The vertical graphite stack columns include fuel channels and management rod channels. The graphite stack is carried by a welded steel construction resting on a concrete foundation. The principle structural aspect of the reactor, a graphite stack with gas channels, absorber-rods and surrounding metal structures, is housed in a concrete vault. On prime the graphite stack is spanned over by an upper steel structure resting on the annular water tank of the biological shield.

The break up graphite rings in the channels provide thermal contact with the graphite bricks of the stack. Provision is made to change the gas channels and control rod channels on the shut-down and cooled reactor. A welded shell enclosing the graphite stack, as properly as the upper and bottom steel constructions type a sealed reactor area. To stop graphite oxidation and to enhance heat transfer from graphite to gasoline channels, the reactor house is crammed with a helium-nitrogen mixture. From the fuel channel the coolant within the form of steam/water mixture goes into the separators. Each gasoline meeting accommodates 18 fuel rods within the type of sealed Zircalloy tubes that are filled with uranium dioxide pellets. Welding cable is suitable for welding applications on meeting lines, building and shipbuilding. The suction and strain headers of each loop are interconnected by six bypass lines, each supplied with a stop gate and a test valve.