Lithium bromide heat pump system for cooling of water-ring vacuum pump in power plant
A technology of water ring vacuum pump and lithium bromide, which is applied in the direction of refrigeration and liquefaction, energy-saving heating/cooling, refrigerators, etc., can solve the problems of affecting safety, effect reduction, and high cost of open cooling water, etc., to achieve lower temperature and refrigeration effect Good results
Inactive Publication Date: 2013-10-16
ZHEJIANG ELECTRIC POWER DESIGN INST
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Problems solved by technology
Increasing the number of vacuum pumps can have a certain effect in the short term, but as the cooling water system of the vacuum pumps deteriorates, the effect will decrease significantly, and cavitation will also increase, affecting safety
The cost of using open cooling water is relatively high, it cannot be used in water-scarce areas, and the effect is also limited by the water temperature
Method used
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[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] Such as figure 1 As shown, the lithium bromide heat pump system for the cooling of water ring vacuum pumps in power plants according to the present invention mainly includes a condensing steam turbine 1, a condenser 2, a first water ring vacuum pump 3-1, and a second water ring vacuum pump. Vacuum pump 3-2, third water ring vacuum pump 3-3, water-to-water heat exchanger 4, lithium bromide heat pump condenser 5, lithium bromide heat pump generator 6, lithium bromide heat pump evaporator 7, lithium bromide heat pump absorber 8, first valve 9 -1 to twenty-second valve 9-22, solution heat exchanger 10, solution pump 11, No. 1 low temperature heater 12-1, and No. 2 low temperature heater 12-2.
[0026] The non-condensable gas extraction pipeline from the condenser 2 is divided into three paths, the first path is connected to one end of the ...
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A lithium bromide heat pump system for cooling of a water-ring vacuum pump in a power plant mainly comprises an extracting-condensing type turbine, a condenser, a water-ring vacuum pump set, a water heat exchanger, a lithium bromide heat pump condenser, a lithium bromide heat pump generator, a lithium bromide heat pump evaporator, a lithium bromide heat pump absorber, a set of valves, a solution heat exchanger, a solution pump, a first low-temperature heater and a second low-temperature heater. According to the lithium bromide heat pump system, a lithium bromide heat pump is utilized to cool cooling water of the vacuum pump, and absorbed heat is utilized to heat condensed water in the low-temperature heaters. On the conditions that only low-pressure steam extraction is utilized and additional water consumption is not needed, the lithium bromide heat pump system can greatly reduce temperatures of operating water of the vacuum pump, improves heat economy, fully utilizes cold source heat to heat the condensed water and utilizes energy sources to the maximum.
Description
technical field [0001] The invention relates to a novel lithium bromide heat pump system used for cooling a water ring vacuum pump in a power plant, and belongs to the technical field of energy utilization. Background technique [0002] The condenser acts as a cold source in the turbogenerator set. Improving the vacuum condition of the condenser is an important means to improve the power generation efficiency of the unit. Within the back pressure range of the normal operation of the unit, the pressure of the condenser is reduced by 1KPa, and the power of the steam turbine can be increased by 1%-2%. The vacuum in the condenser is mainly generated by the condensation of steam, and the vacuum extraction equipment is responsible for the extraction The non-condensable gas in the condenser maintains a vacuum. The water ring vacuum pump has the advantages of low energy consumption per unit of dry air, simple and compact structure, easy operation, and stable work. It is curren...
Claims
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IPC IPC(8): F25B15/06
CPCY02B30/62Y02A30/27
Inventor 张卫灵陈琦林俊光胡亚才卢婉珍钱海平徐红波
Owner ZHEJIANG ELECTRIC POWER DESIGN INST