System for improving low-temperature heat source power generation capacity by using injection pump

A technology of power generation capacity and low-temperature heat source, which is applied in the direction of machines/engines, steam engine devices, mechanical equipment, etc., and can solve the problems of small working pressure difference of circulating working fluid and low working ability of steam-driven turbines

Inactive Publication Date: 2010-03-10
TIANJIN UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, due to the small temperature difference between the low-grade energy and the ambient temperature, if this system is used for steam t

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  • System for improving low-temperature heat source power generation capacity by using injection pump
  • System for improving low-temperature heat source power generation capacity by using injection pump

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Embodiment Construction

[0006] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0007] A system that uses jet pumps to improve the power generation capacity of low-temperature heat sources, including steam generators, turbines, generators, jet pumps, air coolers, working medium pumps, etc. Referring to the accompanying drawings, the jet pump 4 is connected in series between the turbine 2 and the air cooler 5, and the water side of the first-stage steam generator 1-1 is connected in series with the water side of the second-stage steam generator 1-2. The working medium side of the first-stage steam generator 1-1 is connected in series with the turbine 2, jet pump 4, air cooler 5 and the first working medium pump 6-1 to form a closed loop; the second-stage steam generator 1 The working medium side of -2 is connected in series with the jet pump 4, the air cooler 5 and the second working medium pump 6-2 to form anothe...

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Abstract

The invention discloses a system for improving the low-temperature heat source power generation capacity by using an injection pump. In order to increase the operating differential pressure between aturbine and an air cooler, an injection pump is connected in series between the turbine and the air cooler; a steam generator is additionally connected in series behind a first-level steam generator;a water side of the first-level steam generator is connected in series with a water side of a second-level steam generator; a working medium side of the first-level steam generator is connected in series with the turbine, the injection pump, the air cooler and a first working medium pump to form a closed loop; and a working medium side of the second-level steam generator is connected in series with the injection pump, the air cooler and a second working medium pump to form another closed loop. The invention reduces the backpressure of the turbine, increases the operating differential pressureand enhances the working ability. The low-temperature heat source performs secondary heat release in the second-level steam generator, and the steam after heat exchange is used as the working steam ofthe injection pump, thereby realizing the graded use of energy and improving the energy use ratio.

Description

technical field [0001] The invention belongs to low-temperature heat source power generation, and in particular relates to a power generation system in which jet pumps and secondary steam generators are added to increase the working capacity of working medium. Background technique [0002] With the energy shortage and the improvement of people's awareness of natural resources and environmental pollution, systems that use low-grade energy such as solar energy, geothermal energy, or low-temperature waste heat for power generation have emerged as the times require. Low-grade energy can not only provide electric energy, but also reduce environmental pollution and improve energy utilization. However, due to the small temperature difference between the low-grade energy and the ambient temperature, if this system is used for steam turbine power generation, the working pressure difference of the circulating working fluid is small, and the ability of steam to drive the turbine to wor...

Claims

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Application Information

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IPC IPC(8): F01K25/00F01D15/10
Inventor 李新国贾艳敏
Owner TIANJIN UNIV
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