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Single-shaft steam turbine generator unit

A technology of steam turbine generator set and steam turbine generator, which is applied in the direction of steam generation, steam engine device, steam generation device, etc.

Inactive Publication Date: 2011-11-02
CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the efficiency of the double reheat unit is higher than that of the single reheat unit, if the increased efficiency cannot compensate for the increase in pipeline costs and boiler and turbine costs, the double reheat unit is not economically advantageous

Method used

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  • Single-shaft steam turbine generator unit
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  • Single-shaft steam turbine generator unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0031] Such as figure 2 As shown, the single-shaft turbogenerator set in this example includes:

[0032] —— Boiler 2. Boiler 2 is a primary reheat boiler commonly used in this field, and its type is Π-type boiler or tower boiler ( figure 2 Shown is a Π-type boiler), the outside of the boiler is equipped with a deoxygenated coal bunker room 25, and the deoxygenated coal bunker room 25 is located in the turbine room, and the heating surface of the boiler 2 includes a superheater 21, a reheater 22 and a superheater outlet header 210. Reheat gas outlet header 221;

[0033] ——Steam turbine generator 24, including a steam turbine and a generator. The steam turbine is a once-reheated single-shaft condensing type wet-cooled steam turbine or a once-reheated single-shaft condensing type indirect air-cooled steam turbine commonly used in the field, including a high-pressure cylinder, a medium Pressure cylinder, two low-pressure cylinders; each cylinder of the steam turbine and the ge...

no. 2 example

[0043] Such as image 3 The single-shaft turbo-generator set of the illustrated embodiment includes:

[0044] —— Boiler 3, boiler 3 is a secondary reheat boiler commonly used in this field, the type is Π-type boiler or tower boiler ( image 3 Shown is a Π-type boiler), the outside of the boiler is equipped with a deoxygenated coal bunker 35, and the deoxygenated coal bunker 35 is located in the turbine room; the heating surface of the boiler 3 includes a superheater 31, a primary reheater 321, and a secondary reheater 322, primary reheater outlet header 3211, secondary reheater outlet header 3212, superheater outlet header 210, primary reheater inlet header 3221, secondary reheater inlet header 3222;

[0045] ——The steam turbine generator 34, the steam turbine generator 34 includes a steam turbine and a generator, and the steam turbine is a double-reheated single-shaft condensing type wet-cooled steam turbine or a double-reheated single-shaft condensing type indirect air-cool...

no. 3 example

[0057] The single-shaft turbogenerator set in this example includes:

[0058] —— Boiler 4. Boiler 4 is a once-reheated boiler commonly used in this field, and its type is Π-type boiler or tower boiler ( Figure 4 Π-type boiler) or other types of boilers, the outside of the boiler is equipped with a deoxygenated coal bunker room 45, and the deoxygenated coal bunker room 45 is located in the turbine room; the heating surface of the boiler 4 includes a superheater 41, a reheater 42, a reheater Reheater inlet header 422, reheater outlet header 421, superheater outlet header 410;

[0059] ——Steam turbine generator 44, including a generator and a steam turbine, the steam turbine is a once-reheated single-shaft condensing steam direct air-cooled steam turbine commonly used in the field, including a high-pressure cylinder, a medium-pressure cylinder, and two low-pressure cylinders; each of the steam turbines Cylinder and generator are on the same shaft system;

[0060] ——The air-coo...

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Abstract

The invention discloses a single-shaft steam turbine generator unit. The lengths of a main steam pipeline and / or a reheating steam pipeline can be obviously shortened. The single-shaft steam turbine generator unit comprises a steam turbine generator and a boiler and is characterized in that the steam turbine generator is arranged near the superheater outlet header of the boiler to cause the connecting pipeline of the boiler and a steam turbine to be short enough; and the elevation of the steam turbine at least exceeds the elevation of the superheater outlet header by above 50%. The steam turbine generator adopts an elastic foundation and is supported by a steam turbine house civil engineering structure.

Description

technical field [0001] The present invention relates to a turbogenerator set, in particular to a single-shaft turbogenerator set. Background technique [0002] As the price of primary energy continues to increase, the power generation industry is pursuing higher and higher efficiency of the steam turbine generator set in the thermal power plant, so as to reduce the operating cost of the power plant. Among them, improving the parameters of the steam turbine generator set is the main means to improve its efficiency. In the past 20 years, the main steam pressure at the inlet of the steam turbine has developed from a subcritical pressure of 17MPa to the current ultra-supercritical pressure of 27MPa, the temperature has increased from 538°C to the current 600°C, and the reheat steam temperature has developed from 538°C to 600°C. It is estimated that the main steam pressure of the next generation of thermal power units in the next 10 years will reach 35MPa, the temperature will r...

Claims

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Application Information

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IPC IPC(8): F01D15/10F01K11/02F22B33/18
Inventor 叶勇健林磊申松林陈仁杰施刚夜
Owner CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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