A gas turbine casing environment control system and control method thereof

Abstract

The invention discloses a gas turbine box-mounted environment control system and a control method thereof. A heat shield is provided on the inner surface of the chest drum-shaped middle box section, and the left and right ends of the heat shield are connected with the inner surface of the chest drum-shaped middle box section. The two ends are closed and connected to form an airflow chamber, and several air film holes are arranged on the inner wall of the heat shield, and the upper and lower surfaces of the right side of the chest drum-shaped middle box section are symmetrically provided with holes communicating with the airflow chamber. The third and fourth air intake pipelines are provided with valves and fans sequentially from outside to inside on the third and fourth air intake pipelines; the second air intake pipeline is connected through the side of the first air intake pipeline, and A valve, a blower fan and a heater are sequentially arranged on the air pipeline from the outside to the inside. The control system can adjust the use mode according to different working conditions, so that the internal temperature of the box body and the surface temperature of the gas turbine can quickly return to the optimal data environment state; the design of the air film hole can also suppress the backflow of the ejector outlet and the Airflow self-locking inside the body.

Description

technical field [0001] The invention belongs to the technical field of marine gas turbines, and in particular relates to a gas turbine casing environment control system and a control method thereof. Background technique [0002] At present, many countries in the world regard gas turbines as the main research direction of advanced ship power plants. In the construction of large and medium-sized surface ships, gas turbines are usually given priority as the main power plant. [0003] In the design of ships, there are high technical requirements for the installation of gas turbines. In order to facilitate assembly, disassembly, replacement and maintenance, gas turbines are generally designed in a box body. The box body itself should have the functions of heat dissipation, sound insulation and vibration isolation. The quality of its design directly determines the performance of the gas turbine; at the same time, since the gas turbine is installed in the cabin of the ship, the des...

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Problems solved by technology

[0006] In addition, since the structure of the box body is similar to a cube, when the gas turbine is running, there will inevitably be backflow and self-locking phenomena in the space of the box body and at the exit of the ejector, resulting in a decrease in the ejection rate and a decrease in the surface of the box body. There are localized high temperatures on the structure and the surface of the gas turbine, which is extremely detrimental to the performance of the gas turbine

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