Exteriorization of hydrophobic cooling zone for heater
A hydrophobic cooling and heater technology, which is applied to feed water heaters, lighting and heating equipment, preheating, etc. It can solve the problems such as efficiency, affecting the thermal economy of the steam turbine generator set, and achieve the effects of important technical significance and market prospects, significant economic effects, and convenient system connection.
Inactive Publication Date: 2008-05-07
XI AN JIAOTONG UNIV
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Problems solved by technology
[0012] The vapor-liquid two-phase flow type self-regulating water level controller is a creative invention due to its obvious advantages, and is popular among users in China and has been widely used. However, when it is applied to a heater with a hydrophobic cooling area, there is a problem of weakening the hydrophobic cooling area. Serious defects in the effect of hydrophobic cooling affect the thermal economy of the turbogenerator set and increase the coal consumption rate of the turbogenerator set for power generation, thus seriously affecting the popularization and application of the self-regulating water level controller of the vapor-liquid two-phase flow type
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[0028] On the premise of keeping the position of the hydrophobic cooling zone inside the heater unchanged, the present invention makes the hydrophobic process change from the built-in variable through the appropriate transformation of the heater and the change of the connection mode of the vapor-liquid two-phase flow type self-regulating water level controller. It is an external type to achieve the purpose of externalizing the hydrophobic cooling area.
[0029] The externalization method of the hydrophobic cooling zone consists of two parts. One is the transformation of the heater; the other is to change the connection mode of the self-regulating water level controller of the vapor-liquid two-phase flow type.
[0030] There are three points for the transformation of the heater: (1) if image 3 (retrofit of horizontal heater), Figure 4 (Retrofit of vertical heater), open a new drain outlet on the heater shell on the water storage side of the main condensation zone of the hea...
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A method for arranging the drainage cooling region of heater outside the heater by reforming the original heater and connecting a self-regulating steam-liquid type water level controller with the heater features that in the prerequisite that the internal position of the drainage cooling region in the heater is not changed, the heater is such reformed that a drainage outlet is made on the casing of heater at the water storing side in main condensing region, the oringinal drainage inlet is blocked for isolating from the main condensing region, a new drainage inlet is made on the casing of heat at the entrance of drainage cooling region, and the new drainage outlet and inlet are communicated by tube.
Description
technical field [0001] The invention belongs to the technical field of feedwater heaters in thermal power plants, and in particular relates to a method for externalizing a hydrophobic cooling zone of a surface heater. In the method, the original surface heater is transformed, and the transformed surface heater is connected with a vapor-liquid two-phase flow type self-regulating water level controller for controlling the liquid level. Background technique [0002] There are two types of surface heaters for steam turbine generator sets in modern large-scale thermal power plants: horizontal and vertical. [1] , generally consists of the main condensation zone, the superheated steam cooling zone, and the hydrophobic cooling zone (such as figure 1 shown) and other three parts, these three heat exchange areas are combined in one heater shell. The function of the hydrophobic cooling zone is to cool the water condensed after the heating steam condenses and releases heat (it is cust...
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IPC IPC(8): F22D1/00
Inventor 林万超陈国慧邢秦安
Owner XI AN JIAOTONG UNIV