Overflow steam extraction adjusting device of industrial drive steam turbine and control method thereof
A steam extraction regulation and steam turbine technology, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve the problems of large space occupation, rising manufacturing costs, and difficulty in passing the critical speed of the steam turbine, so as to meet the requirements of steam balance and improve the The effect of efficiency
Active Publication Date: 2013-01-30
HANGZHOU ZHONGNENG STEAM TURBINE POWER CO LTD
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Problems solved by technology
Conventional steam turbines use the existing internal lifting plate-type regulating steam extraction device, which takes up a large space and has a complex structure, which leads to a further increase in the span of the steam turbine rotor bearing, which in turn makes it difficult to pass the critical speed of the steam turbine, and ultimately leads to a complex structure of the steam turbine. The manufacturing cost rises, and the operating safety factor of the unit decreases
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Embodiment 1
[0016] like figure 1 As shown, the industrial driving steam turbine overflow extraction regulating device and its control method described in this embodiment include an overflow extraction regulating valve 7, and the overflow extraction regulating valve 7 is arranged in the overflow pipeline 5, and is connected with a signal of a pressure transmitter 8, the pressure transmitter 8 is arranged on the steam extraction main line 4, the overflow line 5 is communicated with the steam extraction main line 4, and the pressure transmitter 8 is located in the overflow line 4. The front end of the flow line 5 is specifically located between the high pressure cylinder 2 and the overflow line 5 . In the industrial driving steam turbine, the main steam extraction line 4 is connected with the high pressure cylinder 2, and the overflow line 5 is communicated with the low pressure cylinder 3, so that a closed-loop control system of the extraction steam pressure can be formed. In order to ensu...
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The invention discloses an overflow steam extraction adjusting device of an industrial drive steam turbine, which comprises an overflow steam extraction adjusting valve, wherein the overflow steam extraction adjusting valve is arranged on an overflow pipeline and connected with a signal of a pressure transmitter; the pressure transmitter is arranged on a steam extraction main pipeline, the overflow pipeline is communicated with the steam extraction main pipeline, and the pressure transmitter is positioned at the front end of the overflow pipeline. In a control method of the device, the steam amount is adjusted by the adjusting valve, the overflow steam extraction adjusting valve is arranged on the overflow pipeline, and the amount of the steam flowing through the overflow pipeline is controlled by the overflow steam extraction adjusting valve, thereby ensuring the steam stability of a heat-removing user in the steam extraction main pipeline. The invention solves the problems of large space occupation and complicated structure of a conventional internal lifting plate type steam extraction adjusting steam valve, overcomes the defect of unqualified steam turbine critical rotating speed caused by structural defects, realizes that the adjustable steam extraction of the industrial drive steam turbine meets the balancing requirement for the steam to the utmost extent and achieves the aim of energy saving.
Description
technical field [0001] The invention relates to a steam turbine regulating device, in particular to an industrial driving steam turbine overflow extraction steam regulating device and a control method thereof. Background technique [0002] With the development of science and technology, the demand for energy consumption has increased rapidly, and people have put forward high requirements for energy utilization efficiency. For impulse-type industrial drive steam turbines, the realization of adjustable steam extraction can effectively ensure the stability of steam extraction point pressure and heat supply, and improve unit efficiency. The structure of the impulsive industrial drive steam turbine itself determines that the rotor has the characteristics of large span and large flexibility, and it is difficult to pass the critical speed. The conventional steam turbine adopts the existing internal lift-type regulating steam extraction device, which occupies a large space and has ...
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IPC IPC(8): F01D17/02
Inventor 葛存飞钱小东陈晨徐俊杰
Owner HANGZHOU ZHONGNENG STEAM TURBINE POWER CO LTD