Power saving vacuum machine for improving vacuum ability of condenser of thermal power generator
a technology of vacuum machine and thermal power generator, which is applied in the direction of steam engine plants, rotary/oscillating piston combinations for elastic fluids, liquid engines, etc., can solve the problems of coal consumption in power generation, reduced turbine efficiency, and worse vacuum of condenser, so as to improve the vacuum ability of condenser, increase the pumping effect, and save power.
Inactive Publication Date: 2021-09-30
ELIVAC COMPANY +2
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Benefits of technology
The present invention is a power saving vacuum machine that improves the vacuum ability of a condenser in a thermal power generator. It includes a front stage pump and one or more high efficiency root vacuum pumps to increase pumping effect. The machine is installed after the condenser and includes a valve for sealing the vacuum primary tube to prevent air from entering. It also has an inlet and an outlet and is connected to an air inlet tube and a rear end of the vacuum primary tube. The technical effects of the present invention are improved vacuum ability, reduced power consumption, higher efficiency, and effective removal of non-condensed air.
Problems solved by technology
When the pumping ability of the water circulation pump is deteriorated so that the vacuum of the condenser cannot be retained, the vacuum of the condenser will become worse.
But in many abnormal states, the vacuum of the condenser cannot be retained.
Method used
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[0013]In order that those skilled in the art can further understand the present invention, a description will be provided in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims.
[0014]With reference to FIGS. 1 to 3, the structure of the present invention is illustrated. The power saving vacuum pump set 300 is installed after a condenser 100. The condenser 100 may be an air condenser or a liquid condenser. The condenser 100 includes a vacuum primary tube 1 for receiving external vapor. The power saving vacuum pump set 300 includes the following elements.
[0015]At least one valve 2 is installed on the vacuum primary tube 1. The valve 2 includes an auto valve sheet (not shown) (such as an air driving valve sheet or an electrom...
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A power saving vacuum machine serves for improving vacuum ability of a condenser of a thermal power generator. The vacuum machine being installed after the condenser and includes a least one valve installed on the vacuum primary tube for sealing a vacuum primary tube to prevent air from entering into the condenser; a front stage pump has an inlet connected to an air inlet tube; at least one root vacuum pump including a main root vacuum pump; the main root vacuum pump including an inlet and a vent opening; the inlet of the main root vacuum pump being connected to a rear end of the vacuum primary tube. The at least one root vacuum pump may be only one pump which is the main root vacuum pump, or the at least one root vacuum pump is a plurality of root vacuum pumps which are connected serially.
Description
FIELD OF THE INVENTION[0001]The present invention is related to vacuum technology for power plants, and in particular to a power saving vacuum machine for improving vacuum ability of a condenser of a thermal power generator.BACKGROUND OF THE INVENTION[0002]For a power plant by using thermal power to generate power, a condenser of a power generator is operated in vacuum. The condenser of a turbine is to assure that a power generator set has a preferred vacuum. The vacuum of the condenser will directly affect the efficiency of coal or gas combustion. For a 50 MW to 1000 MW power generator, if the vacuum is increased with a value of 1 kPa, the coal consumption for power generation of one kilowatt-hour can be reduced with a value of 2-4 grams.[0003]The vacuum pumps used in current power plants have the following problems.[0004]In the initial stage for actuation of the condenser of the water circulation pump, the vacuum ability is preferred, but then the vacuum of the condenser is increa...
Claims
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IPC IPC(8): F04C23/00F04C18/12F04C25/02F01K9/00
CPCF04C23/001F01K9/003F04C25/02F04C18/126F01K13/02F01K9/023
Inventor SHAW, RAYMOND ZHOUPAN, XIAOQING
Owner ELIVAC COMPANY