Generator stator bar dredging system and control method
A generator stator and wire rod technology, which is applied to pipeline systems, hydropower generation, engine components, etc., can solve problems such as poor effect and low efficiency of stator wire rods, and achieve the effect of efficient dredging
Pending Publication Date: 2022-08-05
HUANENG WUHAN POWER GENERATION CO LTD
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Problems solved by technology
[0009] The invention discloses a generator stator bar dredging system, which is used to solve the technical problems of low efficiency and poor effect when dredging the stator bar in the prior art
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[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.
[0028] The embodiments of the present application provide a generator stator bar dredging system, such as figure 1 As shown, it includes an inlet water pressure switch 21, an inlet pressure switch 31, a water inlet solenoid valve 22, an inlet solenoid valve 32, a first pressure relief solenoid valve 25, a second pressure relief solenoid valve 34, a high-pressure water pump 23, and an internal cold water tank 24 and gas storage device 33, wherein,
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The invention discloses a generator stator bar dredging system and a control method, and the system comprises a water inlet pressure switch, an air inlet pressure switch, a water inlet solenoid valve, an air inlet solenoid valve, a first pressure relief solenoid valve, a second pressure relief solenoid valve, a high-pressure water pump, an inner cold water tank and an air storage device. The water inlet pressure switch is switched off and triggers and closes the water inlet solenoid valve and the second pressure relief solenoid valve when the water pressure of the first end of the hollow conduit to be dredged reaches the preset highest pressure, and is switched off and triggers and opens the water inlet solenoid valve and the second pressure relief solenoid valve when the water pressure is not higher than the preset lowest pressure; the air inlet pressure switch is switched off and triggers and closes the air inlet electromagnetic valve and the first pressure relief electromagnetic valve when the air pressure of the second end of the hollow guide pipe to be dredged reaches the preset highest pressure, and is switched on and triggers and opens the air inlet electromagnetic valve and the first pressure relief electromagnetic valve when the air pressure is not higher than the preset lowest pressure. And the blocked stator bar can be dredged more efficiently while the pipe wall of the stator bar is not damaged.
Description
technical field [0001] The present application relates to the technical field of large generators, and more particularly, to a generator stator bar dredging system and control method. Background technique [0002] Most of the hollow copper conductors of the stator coils of large generators use demineralized water as the cooling medium. The deposition of impurities, oxides or corrosion products in the operating cooling water can easily cause the blockage of the cold water circuit in the stator, causing the cooling water flow in the stator to decrease, and the temperature of the outlet water to rise, causing local overheating of the stator bars of the generator, resulting in the generator. The insulation winding is aging, the load is reduced, and the coil is even burned, and it is forced to stop. [0003] The blockage of generator stator bars is mainly caused by the corrosion of copper wires caused by unqualified cooling water quality. Affected by the design of the ultimate ...
Claims
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IPC IPC(8): H02K15/02F17D1/02F17D1/14F17D3/01F16K31/06
CPCH02K15/02F17D1/02F17D1/14F17D3/01F16K31/0675Y02E10/20
Inventor 吴永兵胡景中孙希凯马鹏沈忠罗威杨卫东万晖
Owner HUANENG WUHAN POWER GENERATION CO LTD