Steam compensating turbine
A steam turbine and supplementary steam technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as affecting the utilization rate and stability of waste heat of steam turbines, unable to fully utilize waste heat, and large loss of steam inlet throttling, etc. Improve the efficiency and stability of waste heat utilization, improve the utilization rate and stability of waste heat, and reduce the loss of steam inlet throttling
Active Publication Date: 2011-10-26
QINGDAO JIENENG STEAM TURBINE GROUP CO LTD
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Problems solved by technology
[0004] Existing steam turbines usually use a single-valve regulating valve to realize steam supplement control. If the single-valve regulating valve is closed under partial load, the loss of steam inlet throttling is large, and the economic benefit is poor. The purpose of making full use of waste heat cannot be achieved, thereby affecting The steam turbine waste heat utilization rate and stability
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0021] The embodiment of the present invention provides a supplementary steam turbine, which includes a supplementary steam valve connected in sequence, a cylinder supplementary steam chamber, a sequence regulating valve, and a nozzle group arranged on the intermediate partition; when the external load changes, the sequence regulating valve The valves open or close in a preset sequence. The above-mentioned steam turbine has the advantages of small supplementary ste...
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The invention discloses a steam compensating turbine, which comprises a steam compensating door, a cylinder steam compensating chamber, a sequence adjusting valve, and a nozzle group on an intermediate baffle plate, which are communicated in turn, wherein when an external load changes, valves of the sequence adjusting valve are opened or closed according to the preset sequence. When the turbine runs, low pressure steam entering from a low pressure boiler enters the cylinder steam compensating chamber from the steam compensating door, and enters the nozzle group on the upper part of the intermediate baffle plate through the sequence adjusting valve; and after a regulating stage works, the steam is mixed with main steam current passing through the lower half passage of the intermediate baffle plate, and is exhausted to a condenser after the regulating stage works again. Under the condition of partial load, only one or two regulating valves in the adjusting valves are not opened, so the turbine with the same partial load has smaller inlet steam throttle loss, and the efficiency change inside the turbine is smaller to fulfill the aim of sufficient residual heat utilization and improvethe utilization efficiency and the stability of the residual heat of the turbine.
Description
technical field [0001] The invention relates to the technical field of power generation equipment, and more specifically, relates to a supplementary steam turbine. Background technique [0002] A steam turbine is a rotary power machine that converts the energy of steam into mechanical work, also known as a steam turbine. It is mainly used as a prime mover for power generation, and can also directly drive various pumps, fans, compressors and ship propellers. It is also possible to use the exhaust steam or intermediate steam extraction of the steam turbine to meet the heating needs of production and life. [0003] See Figure 6 As shown, when the steam turbine is running, the high-pressure steam enters the cylinder of the steam turbine through the main steam valve to do work, and the low-pressure steam passes through the supplementary steam valve and enters the cylinder through the single-valve regulating valve to mix with the main steam. After doing work, it is discharged to...
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IPC IPC(8): F01D17/18
Inventor 潘世明张佩娟高开向韩守晓
Owner QINGDAO JIENENG STEAM TURBINE GROUP CO LTD