Structure for preventing steam crossing between drain pipes of steam guiding pipes
A steam guide and water drainage technology, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve problems such as blockage of the steam pipe, reduce the amount of water drainage of the steam guide, and achieve the effect of preventing steam leakage.
Inactive Publication Date: 2015-11-11
广东红海湾发电有限公司
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Problems solved by technology
However, increasing the throttle orifice reduces the amount of drainage in the steam pipe, and it is easy to cause blockage of the drainage pipe
Method used
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[0014] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.
[0015] Such as figure 1 and figure 2 As shown, the present invention discloses a structure for preventing the steam passing between the steam pipes, which is applied to the steam pipe 200 of the steam pipe 100 of the steam turbine. Several steam pipes 100 are respectively provided with a water pipe 200, and several water pipes 200 is connected to one end away from the steam pipe 100; the drain pipes 210 and 220 of the steam pipes 110 and 120 corresponding to the minimum high-profile door CV1 and the second minor door CV2 are respectively provided with control valves for controlling the opening and closing of the steam pipe 200. switches S1 and S2. specifically:
[0016] In this embodiment, the turbogenerator set has four steam guide pi...
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The invention discloses a structure for preventing steam crossing between drain pipes of steam guiding pipes. The structure is applied to the drain pipes of the steam guiding pipes of a turbine. The steam guiding pipes are each provided with the corresponding drain pipe. The ends, backing onto the steam guiding pipes, of the drain pipes are communicated. The drain pipes arranged on the steam guiding pipes corresponding to a smallest high governing valve and a second smallest governing valve are provided with control switches controlling the drain pipes to open and close respectively. According to the structure for preventing steam crossing between the drain pipes of the steam guiding pipes, when a steam turbine generator unit operates and works under peak shaving, the problem that pressures at drain positions of the steam guiding pipes are different is caused due to the fact that the opening degrees of the high-pressure governing valves corresponding to the steam guiding pipes are nonuniform; by arranging the corresponding control switches on the drain pipes of the steam guiding pipes corresponding to the smallest high governing valve and the second smallest governing valve respectively, steam crossing between the different steam guiding pipes can be effectively prevented, and overheat steam in the high-pressure steam guiding pipe is prevented from entering the low-pressure steam guiding pipe.
Description
technical field [0001] The invention relates to the field of power generation, in particular to a structure for preventing steam passing between steam guide pipes of a steam turbine. Background technique [0002] In a turbogenerator set, the steam used to do work is superheated steam. When the temperature of the superheated steam in the steam guide pipe drops or the operation is stopped, part of the steam is easily condensed and converted into liquid water. For this reason, a drain device is installed at the lowest point of the steam guide pipe after the main steam main pipe and the steam turbine control valve, so as to prevent the liquid water in the steam guide pipe from entering the steam turbine when the unit is started or running, causing water impact, affecting the operation safety of the unit, and seriously cause equipment damage. [0003] There are usually 4 steam guide pipes, and the 4 steam guide pipes are respectively provided with corresponding drain pipes, and...
Claims
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IPC IPC(8): F01D25/32
Inventor 朱军王晓晖
Owner 广东红海湾发电有限公司