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Method for changing pure condensation into back pressure heat supply

A pure condensing and back pressure technology, which is applied to the supporting elements of blades, steam engine installations, steam applications, etc., can solve the decline of economic benefits, the economic type cannot be guaranteed, and it is not suitable for the transformation of extraction-condensing high and low pressure split-cylinder steam turbine generator sets. and other problems, to achieve the effect of improving heating efficiency

Inactive Publication Date: 2011-02-02
SHANDONG HONGAO POWER TECHNOLOGY CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

The reason why it cannot be promoted at present is that the economy in the non-heating season cannot be guaranteed, resulting in a decline in economic benefits throughout the year
There are many related academic researches in China, but they are all aimed at newly put into production units, not applicable to the transformation of pumping condensing high and low pressure split-cylinder turbogenerator units that have already been put into operation

Method used

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  • Method for changing pure condensation into back pressure heat supply
  • Method for changing pure condensation into back pressure heat supply
  • Method for changing pure condensation into back pressure heat supply

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Embodiment Construction

[0011] Accompanying drawing is a kind of specific embodiment of the present invention. The pure condensing method is changed to the method of back pressure heating. The high and medium pressure rotor 5 of the steam turbine is connected to one end of the low pressure rotor through the coupling B4, and the other end of the low pressure rotor is connected to the generator 1 through the coupling A2 for power generation and heat supply. It is characterized in that : In the non-heating season, the low-pressure rotor adopts the pure condensing rotor 3, and in the heating season, the pure condensing rotor 3 is replaced by the back pressure heating rotor 6.

[0012] The pure condensing method is changed to back pressure heating. In the non-heating season, the high and medium pressure rotor 5 of the steam turbine is connected to the pure condensing rotor 3 of the steam turbine through the coupling B4, and the generator 1 is connected to the generator 1 through the coupling A2, which is u...

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Abstract

The invention discloses a method for changing the heat supply of a large and medium steam turbine, in particular a method for changing pure condensation into back pressure heat supply. In the method for changing the pure condensation into the back pressure heat supply, a high and medium pressure rotor in the steam turbine is connected with one end of a low pressure rotor through a coupler B; the other end of the low pressure rotor is connected with a generator through a coupler A for power generation and heat supply. The method is characterized in that: the low pressure rotor is a pure condensation rotor in non-heating season and the pure condensation rotor is changed into a back pressure heat supply rotor in the heating season. The method for changing the pure condensation into the back pressure heat supply is suitable for transforming an extraction condensing high and low pressure cylinder steam turbine generator unit which has been put into operation; and the back pressure heat supply rotor is used in the heating season and the pure condensation rotor is used in non-heating season, so heat supply efficiency is greatly improved.

Description

(1) Technical field [0001] The invention relates to a method for heat supply conversion of large and medium-sized steam turbines, in particular to a method for converting pure condensation to back pressure heat supply. (2) Background technology [0002] At present, the large and medium-sized units of domestic power plants basically use extraction condensing steam turbines, and external heating uses extraction steam for heating. This configuration is to ensure that power can be generated in all seasons throughout the year, but the economic benefits of extraction steam heating are much different from those of back pressure heating. After the heat, it will not be able to operate in spring, summer and autumn, and the operating time of the back pressure unit is limited. The heat supply of the back pressure unit is the most economical, and the energy utilization rate is 100% in theory. However, the energy utilization rate of conventional steam turbine generator sets is only 40-4...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/02F01K17/02
Inventor 宋涛陈洁田玮胡赛群
Owner SHANDONG HONGAO POWER TECHNOLOGY CO LTD
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