Please select the most similar patent number from A, B, C and D. Which number is?
A power source unit body for catapulting. The power source unit body for catapulting (77) comprises a high-pressure chamber (7), a flow splitting chamber (8) and a cooling water chamber (9). High-temperature high-pressure fuel gas generated through burning of gunpowder (36) enters the flow splitting chamber, a part of the fuel gas enters a vertical pipe (29) from a fuel gas inlet, and another part of the fuel gas squeezes a water bag (19) in the cooling water chamber, so that cooling water in the water bag is sprayed into the vertical pipe from a cooling water nozzle, and is mixed with high-temperature high-pressure fuel gas to generate steam, and the steam and the gunpowder fuel gas are formed into mixed gas. In the power unit body for catapulting, gunpowder is placed in a cartridge case (6), and when it is required to release energy, high-pressure gas may be released through percussion of the power unit body, thereby implementing catapulting of a shipboard aircraft. Also, an aircraft carrier gas-steam catapult and a catapulting method for implementing catapulting of a shipboard aircraft by use of the power unit body.
A: A gas turbine intake air cooling device using waste heat as driving force, the intake air cooling device comprising an air cooler or a cooling tower (6), a surface cooler (1), a cold water tank (7), and at least one waste heat chiller (4); the two low-temperature water ends (D, C) of the waste heat chiller (4) are connected to the surface cooler (1) via valves (I, II) and/or valves (IV, V, VI) and the cold water tank (7); the two cooling water ends (A, B) of the waste heat chiller (4) are connected to the two cooling water ends of the cooling tower (6); the high-temperature flue gas input end of the waste heat chiller (4) is connected to a waste heat fuel gas pipe (3) of a gas turbine; and the cooling air outlet of the surface cooler (1) is connected to the air intake of a gas turbine (2). The gas turbine intake air cooling device using waste heat as driving force has less energy consumption, low operating costs and controllable intake air humidity.
B: Aircraft carrier aircraft takeoff catapult equipment, comprising a flight deck (18) having a gap (19), front and rear pulleys (20 and 23), and steel cables (36) wrapped around the pulleys. A connector block (45) connects both ends of the steel cables together. A block base (47) is provided on the connector block. A takeoff driving motor (25) can directly drive a pullable swinging arm (7) on the nose gear of an aircraft via the rear pully, the steel cables, and the block base (47) on the connector block or drive an aircraft to run and take off via a reciprocating shuttle. Because the friction between the pulleys and the steel cables can be increased by providing multiple steel cables and increasing the force of a tightening mechanism, this aircraft catapult equipment can easily achieve the driving force required by the aircraft to take off; moreover, the overall structure of the equipment is simplified, is also easy to process and manufacture, and is very suitable for use in catapulting a heavy aircraft taking off from an aircraft carrier. The equipment also is suitable for being miniaturized for installation on a ship or vehicle, specialized in catapulting the takeoff of a small-sized unmanned aerial vehicle.
C: The invention relates to a high-pressure reheating gas-steam combined cycle power generation system and a power generation method. The system consists of a gas turbine sub-system and a steam turbine sub-system. The gas turbine sub-system comprises a device used for two-stage air compression, twice combustion as well as high-pressure and medium-pressure twice turbine working; after initial working of high-temperature gas, the high-temperature gas enters a medium-pressure combustion chamber and is reheated for secondary working, improving the average heat absorption temperature of the whole cycle; and at least a one-stage intercooler is arranged between two-stage compressors, and the heat flow of the intercooler is connected with the two-stage compressors. The steam turbine sub-system adopts a three-pressure reheating type boiler and a steam turbine, the cooling water of the intercooler is connected with high-pressure water, and high-pressure, medium-pressure and low-pressure water as well as the cooling water of the intercooler absorbs heat at different stages for multiple times, thus utilizing the heat energy efficiently. When the high-pressure reheating gas-steam combined cycle power generation system by the present invention is operated with the optimum parameters, the combined cycle efficiency is increased by 3-5 percentage points compared with a combined cycle system mainly adopting a gas turbine class F, and the single-machine output power is increased by more than 70%, reaching level 800MW.
D: Disclosed is a steam ejection type organic garbage disposer with a screwing function of a feed screw cap, which comprises a steam pressure maintaining steel cylinder (19), an ejection steel cage, a feed screw cap (6), a screw cap control device and an ejection initiating cylinder (24), wherein the ejection steel cage is slidingly installed in the steam pressure maintaining steel cylinder (19); a steam inlet (17) is provided on the steam pressure maintaining steel cylinder (19); a feed inlet (27) is provided at the upper end of the ejection steel cage; the lower end of the ejection steel cage is fixedly installed with a piston rod of the ejection initiating cylinder (24); the feed screw cap (6) is installed on the feed port (27) of the ejection steel cage; and the screw cap control device is installed on the steam pressure maintaining steel cylinder (19) above the feed screw cap (6). The garbage disposer has a simple structure, convenient loading and high-pressure resistance, is suitable for instantaneous ejection, and has uniform and ordered discharge and a more stable ejection slide during steam ejection.
Answer: B