SU1258757A1 - Ship system for feeding cooling water to heat exchangers - Google Patents

Abstract

This invention relates to the field of shipbuilding. The purpose of the invention is to increase reliability by eliminating the freezing of ice chips. The cooling water supply system contains ice w, infrared 1 with inlet chamber 2 and receiving device 3. Inlet 2 and outlet chamber 7 communicate with each other by a nozzle opening 8. The system also contains a preheater 10, a wedge 11, a heated water dispenser 12, a wedge 13 to reset water overboard and pipe 14 to remove the ice crumb. When the vessel moves in the ice, it cools, and water enters the inlet chamber 2 through the grate 4 together with ice particles and moves upwards in the direction of the ice particles, then enters through the nozzle 8 into the exit chamber and acquires rotational motion. The pump .9 pumps the water through the heater 10 and then a part of the warm water flows through the clnnett 11 to the sprayer 12, wets the ice crumb and contributes to its melting. 1m zp f-ly, 2 ill. (L to eat OS JV

Description

The invention relates to shipbuilding, in particular to cooling water supply systems to heat exchangers.

The purpose of the invention is to increase reliability by eliminating the freezing of ice chips.

FIG. 1 shows a diagram of the cooling system, its water to the heat exchangers, a vertical section; in fig. 2 shows section A-A in FIG. one.

Ice ice 1 has an inlet chamber 2 with a receiving device 3, represented by a lattice 4 in the side of the vessel 5, through which chamber 2 communicates with water from the side. In some cases, the inlet chamber 2 communicates with a lower receiver 6. The water from the inlet chamber 2 enters the outlet cylindrical chamber 7. The inlet and outlet chambers are communicated by means of a nozzle opening 8, made in the upper part of the outlet chamber 7 The water is drawn to the circulating pump 9 through an orifice made tangentially in the lower part of the output chamber 7. The system also includes a preheater 10, a wedge 11, a heated water dispenser 12, a wedge 13 to discharge water overboard, a pipe 14 to remove laziness ice Roshki Above the surface of the water in the inlet and outlet chambers there is an air volume communicated with the atmosphere by the air tube 15.

The system works as follows.

When the vessel is moving in the absence of ice, the blade 11 is closed, and the heated water does not flow to the sprayer 12, but is drained overboard through the blade 13. In this case, only the outboard water flows into the inlet chamber 2 through the grate 4. the chamber 7 and further on the suction of the centrifugal pump 9, which pumps water through the heater 10, and then through the blade 13 pours overboard. Additionally, outboard water can enter the inlet chamber 2 through the bottom receiving device 6. As the vessel moves in the ice, cooling water enters the inlet chamber 2 through the grate 4 together with ice particles and moves in the direction of the ascent of ice particles upwards. It enters through the nozzle hole 8 into the output chamber and acquires a rotational motion. During rotational movement, ice particles with a specific gravity less than water collect on the water surface in the center of the cylindrical outlet chamber 7 and do not come into contact with the walls. Due to the difference in peripheral velocities along the drum radius, the particles are in constant relative motion, which excludes the possibility of their freezing. With a relatively large size of the cylindrical chamber as compared with the suction opening of the centrifugal pump 9, the velocity component of the water is downward, small, and the water does not carry ice particles down into the suction port of the pump 9. The pump 9 pumps water through the heater 10, where it is heated, and then some of the warm water flows through the blade 11 to the sprayer 12, wets the crumb of ice and contributes to its formation. The rest of the water through the blade 13 is drained overboard. The heat of water entering through the nebulizer 12 has a smaller specific gravity, so it tends to be on the surface of cold water, and under the action of rotation tends to the center of the target, which ensures that warm water and ice chips are found together. With a large accumulation of ice crumb in the outlet chamber, the water supply through the sprayer 12 increases, which increases the speed of the ice crumb and reduces the flow of seawater into the ice box 1, and along with the water and ice crumb. If necessary, the removal of the ice crumb from the exit chamber 7 is carried out through a pipe 14 to remove the ice crumb, which is discharged through the bottom overboard above the waterline and in which an effector is installed outside the ice chic, working from another water source (for example, from a fire pump). The air released during the melting of the ice is removed through the air tube 15, which is connected to the atmosphere.

Claims (2)

1. A cooling water supply system to the heat exchangers, containing an ice box divided into inlet and outlet chambers communicating with each other, a heated water sprayer communicated with a heater line, and a pump communicating with the output chamber increase reliability by eliminating the freezing of ice chips, the exit chamber is cylindrical, with the inlet and outlet chambers communicated by means of a nozzle hole made in the upper part of the exit chamber tangentially to e the cylindrical surface, and heated water sprayer is located at the top of the box over ice outlet chamber. 2. The ship system according to claim 1, characterized in that the exit chamber is provided with a coaxially mounted pipe for removing the ice crumb communicated with the outboard space. t 2