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Gland packing leakage cooling system of supercritical back pressure steam turbine

A steam seal leakage and cooling system technology, applied in the direction of leakage prevention, mechanical equipment, engine components, etc., can solve the problem of high temperature and pressure of steam leakage

Pending Publication Date: 2021-06-01
北京国能龙威发电技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, the present invention provides a steam seal leakage cooling system of a supercritical back pressure steam turbine, which can effectively solve the problem of excessively high temperature and pressure of the steam seal leakage of a supercritical steam turbine. Meet the design requirements of steam turbine seal cooler

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  • Gland packing leakage cooling system of supercritical back pressure steam turbine

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Embodiment Construction

[0042] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0043] Such as figure 1 Shown: This embodiment discloses a steam seal leakage cooling system of a supercritical back pressure steam turbine, including: a back pressure machine 1, a steam seal leakage unit, a desuperheating unit and a seal cooler unit.

[0044] The steam seal leakage unit is connected to the back press 1, and can transfer the seal leakage steam discharged from the back press 1 to the seal cooler unit for condensation to obtain liquid water.

[0045] The desuperheating unit is connected with the steam seal leakage unit, and can reduce the temperature of the steam seal leakage in the steam seal leakage unit to a set temperature; The steam is condensed to obtain liquid water, which is discharged into the hydrophobic expansion vessel.

[0046] The...

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Abstract

The invention relates to a gland packing leakage cooling system of a supercritical back pressure turbine. The gland packing leakage cooling system comprises a back pressure turbine, a gland packing leakage unit, a temperature reduction unit and a gland steam cooler unit. The gland packing leakage unit is connected with the back pressure machine, and gland packing leakage discharged from the back pressure machine can be transmitted to the gland steam cooler unit for condensation to obtain liquid water; the temperature reduction unit is connected with the gland packing leakage unit, and the temperature of gland packing leakage in the gland packing leakage unit can be reduced to a set temperature; and the gland packing leakage can be condensed through the gland packing leakage unit to obtain the liquid water, and the liquid water is discharged into a drain flash tank. According to the gland packing leakage cooling system, the problem that the gland packing leakage temperature and pressure of the supercritical steam turbine are too high can be solved, and the design requirement of the gland steam cooler of the steam turbine is met.

Description

technical field [0001] The invention belongs to the technical field of steam turbine power generation, and in particular relates to a steam seal leakage cooling system of a supercritical back pressure steam turbine. Background technique [0002] The main steam temperature and pressure of the supercritical back pressure steam turbine are high, and the temperature and pressure of the steam seal leakage are also high. The difficulty of making the material selection of the steam seal cooler has certain difficulties. Contents of the invention [0003] (1) Technical problems to be solved [0004] In order to solve the above-mentioned problems in the prior art, the present invention provides a steam seal leakage cooling system of a supercritical back pressure steam turbine, which can effectively solve the problem of excessively high temperature and pressure of the steam seal leakage of a supercritical steam turbine. Meet the design requirements of steam turbine seal cooler. ...

Claims

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Application Information

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IPC IPC(8): F01D25/12F01D11/04
CPCF01D25/12F01D11/04
Inventor 孙秀君杨存赵丽华张宇王学博
Owner 北京国能龙威发电技术有限公司