All-welded plate shell type stainless steel condenser and application thereof

Abstract

The invention provides an all-welded plate shell type stainless steel condenser and application thereof. The all-welded plate shell type stainless steel condenser is a key device in a thermodynamic system of a power plant. Concave-convex multi-point type stainless steel sheets are adopted in a high-vacuum negative-pressure rectangular case at a dead steam part; two sheets are provided with longitudinal welding lines between which tops of convex grooves are opposite to each other, so as to form a dead steam path which is of single flow path type; the other two sheets are provided with transverse welding lines, between which bottoms of concave grooves are opposite to each other, so as to form a circulation cooling water path which is separated into two equal flow paths by a case separator; the height of the convex grooves is equal to the depth of the concave grooves and is not less than 6mm; small convex grooves are arranged among convex grooves and small concave grooves are arranged among concave grooves. The dead steam exchanges heat with the circulation cooling water in a fair flow / cross flow manner from top to bottom by virtue of flow paths at two sides of the sheets, and is condensed into water and flows downwards in a mode of beads, and water gathered in a steam gathering chamber and a water gathering chamber flows out through a heat well condensed water outlet. The condenser has the advantages of compact structure, material saving, light weight, low production cost, short investment return period and is worthy of popularization and application in large scale.

Description

technical field [0001] The invention relates to a condenser of a thermal system of a power plant and its application, in particular to the main auxiliary equipment of a condensing steam turbine, a fully welded plate-shell stainless steel condenser and its application. Background technique [0002] With the increasingly tense energy supply and the deteriorating environment, human beings' desire for sustainable development is becoming stronger and stronger. In the "Eleventh Five-Year Plan" of our country, for the first time, energy saving and consumption reduction were taken as the main phased tasks, highlighting the importance of energy saving and consumption reduction. For power plants, the condenser is the key heat exchange equipment for the cold source of the thermal system in the steam turbine unit. If the exhaust pressure and exhaust temperature of the steam turbine can be reduced, the thermal efficiency of the cycle can be improved. It can be seen that the condenser is...

AI Technical Summary

Problems solved by technology

This patent uses a plate-shell heat exchange method, as the cold and hot fluids in the heat exchange of the condenser perform heat exchange in "cross flow" and "counter flow". Although the heat exchange efficiency has been improved, it is not ideal enough and has not reached intended purpose

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