Abstract: This application relates to the technical field of coal-fired boilers, and provides a method and an apparatus for improving steam oxidation resistance of a small-diameter boiler tube in a coal-fired boiler. The method includes the following steps: cutting a boiler tube panel from a ceiling of the boiler, vertically hoisting and fixing the boiler tube panel, and cutting out a section from a bottom portion of a lower bend of the boiler tube panel; cleaning an inner tube wall of each tube body in the boiler tube panel; performing oxidation resistance coating sintering on the inner tube wall of each tube body in the boiler tube panel; and performing a welding repair on each tube body in a sintered boiler tube panel. All construction processes of this method can be completed in a furnace during shutdown and maintenance, production efficiency is high, and maintenance duration can be significantly reduced.

Abstract: A light-splitting reflection high-concentration photovoltaic photothermal integrated cavity receiver includes a photothermal assembly and a photovoltaic assembly. The photothermal assembly includes a high-temperature heat storage system, a low-temperature heat storage system, a plurality of heat exchange tube bundles defining a reflective cavity, and an ultraviolet and visible light reflective film arranged on an inner surface of the reflective cavity. The plurality of heat exchange tube bundles are communicated to form a heat collection circuit, and the heat collection circuit has an input end connected with the low-temperature heat storage system, and an output end connected with the high-temperature heat storage system. The photovoltaic assembly is arranged at a focus of the reflective cavity, and includes a near-infrared reflective film, a high concentration photovoltaic integrated receiver and a concentration photovoltaic cooler stacked sequentially along an incident direction of light.

Abstract: A dry low NOX staged combustion system includes a fuel nozzle and a combustion compartment. The fuel nozzle includes a purge gas tube, a diffusion combustion fuel tube, an isolation gas tube, a premixed combustion fuel tube, a premixed combustion air tube. The purge gas tube is configured to feed a purge gas. The diffusion combustion fuel tube is fitted over the purge gas tube, and having an end provided with a diffusion combustion fuel swirler. The isolation gas tube is fitted over the diffusion combustion fuel tube. The premixed combustion fuel tube is fitted over the isolation gas tube. The premixed combustion air tube is fitted over the premixed combustion fuel tube. The combustion compartment is located downstream of the fuel nozzle.

Abstract: A compressed-air energy storage system of a constant-pressure full-capacity energy-release type, includes two or more liquid-gas coexisting containers, at least one of the two or more liquid-gas coexisting containers is filled with a pressurized liquid, the rest liquid-gas coexisting containers are configured to store a high-pressure air, and the two or more liquid-gas coexisting containers are in communication with each other. When the compressed-air energy storage system of the constant-pressure full-capacity energy-release type operates in an energy storage operating condition, the high-pressure air can be directly stored in the liquid-gas coexisting container without energy conversion loss. When the compressed-air energy storage system operates in an energy release operating condition, the pressurized liquid circulates in the liquid-gas coexisting containers storing the high-pressure air, to realize a constant-pressure full-capacity release of the high-pressure air.

Abstract: A packing device for an adsorption device is disclosed. The packing device includes a heating support frame, a packing layer support and a plurality of packing cells. The packing layer support is horizontally extended and arranged in a length direction of the heating support frame, and grooves are alternately provided on both sides of the packing layer support. A clamping slot corresponding to each groove is provided on one side of each packing cell, the packing cell is clamped to the packing layer support through the clamping slot, and one side of the packing cell is in contact with an inner wall of the heating support frame.

Abstract: A system and a method of black start for a combined operation of wind power, photovoltaic power, energy storage, and thermal power includes a renewable energy alternating current microgrid module, a power transmission and distribution module, and a thermal power generation module, the power transmission and distribution module is coupled to the renewable energy alternating current microgrid module and the thermal power generation module respectively. The renewable energy alternating current microgrid module includes a photovoltaic unit, a wind power unit, and an energy storage unit. The power transmission and distribution module is configured to transmit the electrical energy generated by the renewable energy alternating current microgrid module to the thermal power generation module. The thermal power generation module is configured to start an auxiliary equipment using the electrical energy transmitted by the power transmission and distribution module.

Abstract: The gravity compressed air energy storage system includes: a shaft, into which a pressure-bearing cylinder is movably inserted; a locking component arranged at a top of the pressure-bearing cylinder to support the pressure-bearing cylinder on a ground at a top of the shaft through the locking component in case that the pressure-bearing cylinder is at a lowest limit position; a primary gravity block arranged above the locking component; a spherical connection component arranged and spherically connected between the primary gravity block and the locking component; in which a plurality of guide components are arranged around the primary gravity block; and a plurality of guide rails arranged on the ground and at a peripheral side of the primary gravity block; in which the plurality of guide rails cooperate with the plurality of guide components.

Abstract: A support frame apparatus for a thermal fluid includes: a support frame adapted to be coupled to an inner wall of an adsorption device, and defining a chamber therein, a first channel for accommodating the thermal fluid being formed in a wall of the support frame, and a plurality of first holes being formed in the wall of the support frame and being opened to the chamber to spray the thermal fluid into the chamber; and a plurality of support arms disposed within the chamber and each having a first end coupled to the support frame and a second end extended inwardly from the support frame, the support arm defining a second channel therein fluid communicated to the first channel, and the support arm having a plurality of second holes communicated to the second channel and opened to the chamber to spray the thermal fluid into the chamber.

Abstract: The system for frequency modulation based on Direct Current (DC) controllable load for a high-voltage plant includes a frequency modulator and a DC-controllable load for the high-voltage plant connected to the frequency modulator. The frequency modulator includes a centralized rectifier configured to adjust power of loads in the DC-controllable load in response to a frequency modulation command. The DC-controllable load is configured to respond to an adjustment of the power of loads performed by the centralized rectifier.

Abstract: A pulse detonation combustion system includes: an inlet pipe; an intake cone disposed in the inlet pipe, having an end provided with a pneumatic valve, and including an atomizing air transfer tube, a fuel transfer tube, and a conical swirl nozzle connected to the atomizing air transfer tube and the fuel transfer tube; an atomizing air intake tube connected with the atomizing air transfer tube; a fuel supply tube connected with the fuel transfer tube; a pulse detonation combustion chamber located downstream of and communicated to the inlet pipe, and provided with a spark plug mounting seat for mounting a spark plug; a gas energy distribution adjustment device located downstream of and communicated to the pulse detonation combustion chamber; and a transition section located downstream of and communicated to the gas energy distribution adjustment device.

Abstract: A gas turbine power generation device includes: an inlet pipe (1), a compressor (2), an air storage compartment (3), a compressor rotor (4), a compressor gear shift (6), a compressor exhaust pipeline (8), a combustion chamber intake pipeline (10), a combustion chamber intake cone (11), a combustion chamber pneumatic valve (14), a spark plug (19), a combustion chamber (21), a Tesla turbine (22), a gas collection compartment (27), an outlet pipe (28), a turbine rotor (30), a generator gear shift (32) and a generator (33).