High-temperature high-pressure thermodynamic steam bleeder

Abstract

The invention relates to a high temperature and high pressure thermal power type steam drain valve which is characterized in that the two sides of a valve body (1) are respectively provided with a water inlet hole I (17) and a water outlet hole I (18), the valve body (1) and the connecting screw nut of a valve cover (9) are fixed by a stair end stud bolt (7), the valve cover (9) is covered by an outer cover (11); a convex plate is arranged in the middle part of a valve seat (4), the two ends of the convex plate are in the shape of stairs, the lower end of the convex plate is provided with a dovetail groove (21); the middle part of the upper end of the valve seat (4) is provided with a water inlet hole II (20) which is communicated with the dovetail groove (21), the dovetail groove (21) is communicated with the water inlet hole I (17), a water outlet hole II (19) communicated with a water outlet hole I (18) is arranged on the upper end central line of the valve seat (4), the bottom part of the valve seat (4) is provided with a positioning pin (2); the inner cavity of the valve body (1) is provided with a filtering net (5), the filtering net (5) is internally provided with the valve seat (4), the positioning pin (2) at the bottom part of the valve seat (4) is arranged in the positioning hole at the bottom part of the inner cavity of the valve body (1) for positioning. The steam drain valve of the invention can drain condensed water in a timely manner, eliminate air locking with high rate of back pressure and contribute to the recovery of the condensed water.

Description

technical field [0001] The present invention relates to a disc-type thermodynamic steam trap, more specifically to an automatic steam trap suitable for high-pressure superheated steam delivery pipelines and small steam indirect heating equipment within the range of working pressure difference 1.6MPa·G~26.0MPa·G. High-temperature and high-pressure thermodynamic steam traps that block steam and drain water and recover condensed water by using the back pressure of the trap. Background technique [0002] At present, the known disc-type thermodynamic steam traps generally use cast iron and carbon steel shells, 3Cr13 valve plates, and 2Cr13 valve seats, which have defects such as high operating frequency, serious steam leakage, short service life, and poor air exhaust performance. When the working pressure is greater than 1.6MPa G, the defect that it cannot operate normally for a long time is more serious. According to statistics, about 30% of the millions of disc-type thermodyna...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the disadvantage of poor operation reliability and short service life when the maximum working pressure of the disc type thermodynamic steam trap is greater than 1.6MPa·G, and to provide a kind of valve with large working pressure range, stability and reliability. Good double sealing surface, flat cut-off type high temperature and high pressure thermodynamic steam trap

Images