External steam supply pipeline with back pressure type steam turbine power generation device
A technology for power generation devices and turbogenerators, which is applied to steam engine devices, machines/engines, steam applications, etc., can solve the problems of reducing the thermal efficiency of power plants, reducing the working ability of steam, etc., and achieve the effect of solving existing technical problems
Pending Publication Date: 2022-03-25
SHENZHEN ENERGY ENVIRONMENT ENG +5
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Problems solved by technology
According to the second law of thermodynamics, the process of steam temperature reduction and decompression (conversion to low grade) is an irreversible process of entropy increase and enthalpy decrease, which reduces the work ability of steam, thereby reducing the thermal efficiency of the power plant
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[0020] figure 1 It is a structural schematic diagram of the first embodiment of the present invention. In this example, an external steam supply pipeline with a back pressure steam turbine power generation device, the inlet end of the external steam supply pipeline 1.1 is connected to the steam main pipe 1 and the outlet end provides steam to the outside, according to the direction of steam flow In the external steam supply pipeline 1.1, steam inlet electric gate valve 1.1B1, back pressure turbine generator 1.1A, and steam outlet electric gate valve 1.1B2 are arranged in sequence, and the steam generated by the boiler flows into the steam main pipe 1. The external steam supply pipeline 1.1 is described, and then flows through the steam inlet electric gate valve 1.1B1, the back pressure turbo generator 1.1A, the steam outlet electric gate valve 1.1B2, and finally the steam is supplied externally through the external steam supply pipeline 1.1.
[0021] In the prior art, the ext...
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An external steam supply pipeline with a back pressure type steam turbine power generation device is characterized in that the inlet end of the external steam supply pipeline is connected to a steam mother pipe, the outlet end of the external steam supply pipeline provides steam to the outside, and a steam inlet electric gate valve, a back pressure type steam turbine generator and a steam outlet electric gate valve are sequentially arranged on the external steam supply pipeline according to the flowing direction of the steam. Steam generated by a boiler flows into the external steam supply pipeline through the steam mother pipe, then sequentially flows through the steam inlet electric gate valve, the back pressure type steam turbine generator and the steam outlet electric gate valve, and finally is supplied to the outside through the external steam supply pipeline. High-grade (higher pressure and temperature) steam heat energy which is generated by a boiler and originally used for heat supply is partially converted into electric energy of a back pressure type steam turbine generator unit, and residual low-grade (lower pressure and temperature) steam after power generation supplies heat to the outside. The heat efficiency of a power plant is fully utilized, and the existing technical problems can be effectively solved.
Description
technical field [0001] The invention relates to the technical field of steam pipelines in power plants, in particular to an external steam supply pipeline with a back pressure steam turbine power generation device. Background technique [0002] The steam generated by the boiler in the power plant is converted into mechanical energy by a condensing steam turbine, and then converted into electrical energy by a generator, supplemented by internal production heat or steam extraction for external heat supply. [0003] In the power generation system of the power plant, the main steam system adopts a centralized parent control system. The main steam enters the main steam main pipe from the outlet header of the final stage superheater of the boiler through the electric main steam valve and the flow orifice plate. The main steam enters the main steam valve of the condensing steam turbine through the branch pipe connected with the main steam main pipe. Another pipeline is led out fr...
Claims
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IPC IPC(8): F01D15/10F01K17/02F17D1/06
CPCF01D15/10F01K17/02F17D1/06
Inventor 梁增英
Owner SHENZHEN ENERGY ENVIRONMENT ENG