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Turbine gland steam supply system and operation method thereof

A technology for sealing steam and supplying systems, which is applied in mechanical equipment, engine components, machines/engines, etc., and can solve problems such as low supply steam temperature and turbine rotor contact.

Active Publication Date: 2017-08-29
MITSUBISHI HEAVY IND MARINE MACHINERY & EQUIP CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0010] However, the temperature of the make-up steam is lower compared to the temperature of the high-temperature steam normally supplied to the turbine
Therefore, when the turbine is switched from high-load operation to stop or low-load operation, when the temperature of the steam seal part is, for example, about 370°C, and the temperature of the make-up steam is, for example, about 175°C, if the make-up steam is used as the seal When steam is supplied to the gland part, the packing ring of the gland part is cooled and shrinks, and the turbine rotor may contact the packing ring

Method used

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  • Turbine gland steam supply system and operation method thereof
  • Turbine gland steam supply system and operation method thereof
  • Turbine gland steam supply system and operation method thereof

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Embodiment Construction

[0117]Hereinafter, several embodiments of the present invention will be described with reference to the drawings. However, the dimensions, materials, shapes, and relative arrangements of components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. For example, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric" or "coaxial" denoting relative or absolute configurations are not strictly It means such an arrangement, and also means that there is a tolerance, or a state of being relatively displaced by an angle and a distance at which the same function can be obtained. For example, expressions such as "same", "equal", and "homogeneous" that indicate the state of equality of things not only strictly indicate the state of equality, but also state that there is a state where there is a tolerance, or that there is a...

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Abstract

The present invention provides a turbine gland steam supply system by which there is no need to worry about contact due to contraction of gland steam when a turbine is switched from a high load operation to stop or a low load operation, and a method for operating the same. The gland steam supply system supplies gland steam to a gland steam portion of the turbine driven by high-temperature steam from a main steam line and is configured to be capable of supplying mixed steam of the low-temperature steam having temperature lower than the temperature of the high-temperature steam and supplied from a supply source different from the high-temperature steam and the high-temperature steam to the gland steam portion as the gland steam.

Description

technical field [0001] The present invention relates to a turbine seal steam supply system capable of supplying low-temperature steam used for auxiliary equipment, miscellaneous services, etc., as sealing steam of a turbine seal of a turbine, and an operating method thereof. Background technique [0002] As a method of supplying seal steam for sealing to the turbine seal part of the turbine, for example, there is a method of branching the seal steam supply line from the main steam line through which the high-temperature steam that drives the turbine flows, and passing the high-temperature seal steam through the seal steam supply line. The steam is supplied to the seal portion of the turbine (see Patent Document 1). [0003] In the seal steam supply method described in Patent Document 1, when the turbine is driven, high-temperature steam is cooled by a desuperheater provided in the seal steam supply line, and then supplied to the seal portion of the turbine. Therefore, in th...

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Application Information

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IPC IPC(8): F01D11/10
CPCF01D11/10F01D11/04F01D11/06F01D17/24F05D2220/31
Inventor 野濑泰一
Owner MITSUBISHI HEAVY IND MARINE MACHINERY & EQUIP CO LTD
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