SU932182A2 - Contact gas-liquid heat exchanger - Google Patents

Description

(5) CONTACT GAS-LIQUID HEAT EXCHANGER

I

The invention relates to heat exchangers and can be used primarily for heating a liquid.

By bus No. 737769 is known a contact gas-liquid heat exchanger containing a vertical case with a sprinkler installed in its upper part, under which downstream truncated cones are placed along the axis of the body, the smaller bases of which are provided with swirlers and the large ones are attached to the disks installed with a gap relative to the body, with the smaller bases of the co-jusks facing opposite to the direction of the gas flow, the irrigator is equipped with a swirler, and the disks are located on the gratings attached to the inner wall of the housing sa 1 .M

A disadvantage of the known heat exchanger is that as the gas flow rate increases, the liquid film flowing along the inner surface of the overflow truncated cones is trapped by the gas flow, as a result of which the heat exchanger performance decreases.

The purpose of the invention is to regulate the flow of fluid to the overflow truncated cones.

The goal is achieved by the fact that in a known contact gas-liquid heat exchanger containing a vertical case with a sprinkler installed in its upper part, under which along the axis of the case with a predetermined spacing, the flow-through truncated cones, the smaller bases of which are fitted with swirlers, and large ones are attached to the disks, installed with a gap in relation to the body, with the smaller bases of the cones facing opposite to the direction of the gas flow, the irrigator is equipped with a swirler, and the disks are located on the grids, eplennyh to the inner wall of the housing, to a smaller bases of each

of them attached drain pipe, equipped with a water seal.

Figure 1 shows the contact gas-liquid heat exchanger, Longitudinal section; FIG. 2 shows a hydraulic lock installed on the drain connection.

The heat exchanger contains a vertical casing 1, a sprinkler 2, a swirler 3, overflow cones i with a swirl 5 disks 6 supported on the grids 7, drain pipes 8, spray disks 9, hydraulic locks 10, pipe 11 for water supply, pipe 12 for its removal.

The heat exchanger operates as follows. .

The liquid enters the heat exchanger, through the nozzle 11, into the sprinkler 2 and enters the disk 9, where it is dispersed and after contact with the hot gas passing from the bottom up, it enters the permeate cone. In it, it accumulates until the internal seal of the hydraulic seal 10 is cut off and then, flowing over its side, is drained from the drain fitting 8 to the downstream spray disc 9 of the next stage, where it is redispersed.

The gas (vapor) enters the heat exchanger from the bottom up, through the gap "between the disk 6 and the housing 1 through the grids 7. Here the gas flow accelerates and picks up the liquid dispersed as it hits the spray discs 9. Then the gas flow with water drops meets on the paths of their advancement, the resistance resulting from the rotation of the gas flow in the zone of fan swirls 5 and deviates into the stagnant zone of the central part of the overflow cone 4.

Drops of liquid, losses in speed and discharge from each other are deposited in the overflow cone 4 and, after passing through the hydraulic lock 10, flow onto the spray disk 9 below the level located. At the last stage of the hot water accumulated in the overflow cone 4, it is withdrawn from the heat exchanger through the nozzle 12.

The heat exchanger helps to stabilize the flow of liquid (water) from step to step from the elongated nozzles and thereby reduce the entrainment of liquid with gas flow, which ensures an increase in the performance of the heat exchanger.

Claims (1)

1. USSR author's certificate ff 737769 according to application tf 2677A 9, cl. F 28 C 3/06, 1978.