JPS6014147Y2 - condenser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the final air cooling section for extracting non-condensable gases from a condenser.

FIG. 1 is a sectional view showing the structure of a conventional final air cooling section for extracting non-condensable gas.

This final air cooling section is connected to the tube plate 1 of the condenser on the cooling water inlet side.
A baffle plate 4 provided between the cooling pipe support plate 2 and the cooling pipe support plate 2 and attached to this final air cooling section allows a pipe channel to be provided in the air cooling section at the center of the cooling pipe in the longitudinal direction parallel to the cooling pipe. The direction of the flow of non-condensed gas flowing through 3 is changed to separate only the non-condensed gas.

This gas passes through an air extraction pipe 5 provided at the center of the cooling tube and is exhausted by an air extractor provided outside the vessel.

In this structure, the difference between the pressure loss from the pipe channel 3 to the air extraction pipe 5 and the pressure loss from the space 7 outside the central part of the cooling tube group to the air extraction pipe 5 is small. The flowing live steam is also discharged at the same time.

As a result, a portion of the non-condensable gas that is not discharged remains in the air cooling section, and there is a concern that the performance of the condenser may deteriorate or the cooling pipe may corrode.

The present invention aims to eliminate the above-mentioned drawbacks.

FIG. 2 is a sectional view showing the structure of the final air cooling part for extracting non-condensable gas according to the present invention.

It has the same structure as the conventional one, but the only difference is that a perforated plate 6 is provided around the baffle plate 4 in the space 7 in FIG.

By providing this perforated plate 6, the pressure loss from the space 7 to the air extraction pipe 5 increases, and the pipe channel 3
The difference between the pressure loss and the air extraction pipe 5 increases.

As a result, non-condensable gas from the pipe channel 3 flows more easily into the air extraction pipe 5.

Therefore, live steam from the space 7 is also difficult to be discharged, non-condensable gas from the pipe channel 3 is also completely condensed, and only the non-condensable gas is discharged.

In addition, by making it easier for non-condensable gas to be discharged, there is no stagnation of non-condensable gas in the air cooling section, which improves the performance of the condenser and prevents corrosion of the cooling pipes caused by non-condensable gas. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional final air cooling unit, and FIG. 2 is a sectional view of a final air cooling unit according to the present invention. 1... Tube plate, 2... Cooling pipe support plate, 3
... Pipe channel, 4 ... Baffle plate, 5 ... Bent air extraction pipe, 6 ... Perforated plate.

Claims (1)

[Scope of utility model registration request] In a condenser having a final cooling section for extracting non-condensable gas, which includes an extraction pipe provided on the pipe wall and a pipe channel attached to a cooling pipe support plate, a baffle plate is installed in the space in the center of the cooling pipe group. A condenser characterized by having a perforated plate around the part.