A heat rate test method for a single unit of a main pipe back pressure steam turbine
A steam turbine unit and back pressure technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems that the unit system cannot be maintained, the thermal performance test of a single unit cannot be realized, and isolation cannot be achieved. It is convenient for thermal data calculation, easy to realize, and simple in principle.
Active Publication Date: 2018-08-07
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology
The inlet steam of the deaerator and the heat supply return water entering the deaerator of the two units are connected through the main pipe, and cannot be isolated, and the unit system operation cannot be maintained
For this kind of parent control system that cannot be isolated, there is no way to test the thermal performance of a single unit
Method used
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Embodiment 1
[0021] Such as figure 2 As shown, the present invention provides a unit system isolation system for back pressure type steam turbine with main tube, comprising: No. 1 boiler, No. 1 steam turbine, No. 2 boiler, No. 2 steam turbine, No. 1 deaerator, No. 2 deaerator, Heat supply pipes, heat user terminals and return water pipes; No. 1 boiler and No. 2 boiler are connected to No. 1 steam turbine and No. 2 steam turbine respectively; No. 1 steam turbine unit is used as the test unit, and No. 1 steam turbine unit is connected to the heat user terminal in turn, and then Connect the heat supply and return water pipe, pass through the No. 1 deaerator, and connect with the return water pipe of the test unit to the No. 1 boiler;
[0022] No. 2 steam turbine is connected to No. 1 deaerator, No. 2 deaerator, and heat user terminal in sequence, and then connected to the heating return water pipeline, and then connected to No. 2 boiler through the No. 2 deaerator and the No. 2 unit return w...
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The invention provides a header system back-pressure steam turbine unit system isolation system and a heat consumption rate testing method for each single unit. Steam supply of a deaerator of a testing unit is cut off, so that steam inlet of deaerators of the two units is provided by a steam turbine of another non-testing unit; the deaerator of the testing unit does not consume steam used by a machine, and mixed downward water in the deaerator of the testing unit can be considered as heat supply backwater outside the testing unit so that heating power testing calculation can be conducted; and the exact calculation mode is that the heat consumption rate of each single unit equals to the result that the sum of the product between the difference between the new steam enthalpy value and the feedwater enthalpy value and the exhaust steam heat supply user flow and the product between the backwater flow of the testing unit and the backwater enthalpy value is divided by the power of a power generator.
Description
technical field [0001] The invention belongs to the field of energy, and in particular relates to a method for testing the heat consumption rate of a single unit of a main control backpressure steam turbine. Background technique [0002] A power plant has two back pressure steam turbine units. The exhaust steam of the two units is used for industrial use outside the factory, and the exhaust steam is also used for the deaerators of the two units. The inlet steam of the deaerators of the two units and the heating and return water entering the deaerators are connected through the main pipe, and cannot be isolated, so the unit system operation cannot be maintained. For this kind of parent control system that cannot be isolated, there is no way to test the thermal performance of a single unit. Contents of the invention [0003] The purpose of the present invention is to solve the problem of how to test the thermal performance of a single unit, and to provide a unit system iso...
Claims
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IPC IPC(8): F01D21/00
CPCF01D21/003
Inventor 董洋王学同王学栋康艳昌宋昂刘传玲
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD