Abstract: A hierarchical decoupling, integrated and open communication open system includes a large communication network, a Yunxi platform, and a customer, which are communicatively connected to one another, wherein the Yunxi platform includes a service application layer, a communication capability layer and a resource pool, which are communicatively connected to one another, the large communication network, the communication capability layer and the customer are communicatively connected to one another, and the service application layer is communicatively connected to the customer. The present invention innovates decentralized communication service provision methods, further integrate communication capabilities, encapsulate communication scenarios into flexible and easy-to-use communication modules, and provide a unified and convenient service interface, thereby lowering a user-side access threshold, and deeply integrating communication capabilities with application scenarios of government and enterprise customers.

Abstract: An impeller tube-type nozzle for a gas turbine, with an inlet section, a retraction section and an outlet section. The inlet section is a section of annular channel, the retraction section comprises multiple gas flow channels separated by multiple blades, each gas flow channel is encircled by an outer peripheral wall face, an inner peripheral wall face, a suction face of one of two adjacent blades and a pressure face of the other of the two adjacent blades, and inlets of the gas flow channels have a fan-shaped cross section. For each gas flow channel, along the direction of gas flow from the inlet of the gas flow channel to the outlet the fan-shaped cross section gradually smoothly transitions into a circular cross section.

Abstract: An impeller tube-type nozzle for a gas turbine, with an inlet section, a retraction section and an outlet section. The inlet section is a section of annular channel, the retraction section comprises multiple gas flow channels separated by multiple blades, each gas flow channel is encircled by an outer peripheral wall face, an inner peripheral wall face, a suction face of one of two adjacent blades and a pressure face of the other of the two adjacent blades, and inlets of the gas flow channels have a fan-shaped cross section. For each gas flow channel, along the direction of gas flow from the inlet of the gas flow channel to the outlet the fan-shaped cross section gradually smoothly transitions into a circular cross section.