SU977281A1 - Ship-borne desalination unit - Google Patents

Description

(54) COURT DESCRIPTION INSTALLATION

The invention relates to shipbuilding, in particular to ship desalination facilities.

The ship desalination plant is known, containing a condenser, with an inlet which communicates the internal cavity of an evaporator equipped with a drainage pipe, a preheater, a washing-separation device with supply lines and a water drain, a condensate pump, the output of which is equipped with a salinometer sensor electrically connected with an electromagnetic switching valve, the outlet of which is connected to the pipeline for dumping saline condensate, and a seawater pump, the discharge pipe of which through the heater and to ndensator fluidically coupled to ejector brine, communicated through the inlet pipe of the brine pump to the evaporator, and on an output - with the space outboard C13

A disadvantage of the known desalination plant is that the saliby condensate slib is carried out in the hold of the ship's engine room. Drainage of saline condensate

in the hold reduces the effectiveness of the desalination plant.

The purpose of the invention is to increase the efficiency of the installation and its ease of maintenance by eliminating the discharge of saline water into the hold.

This goal is achieved by the fact that in a desalination plant the discharge pipeline of saline condensate is hydraulically connected to the internal cavity of the evaporator, and the drainage pipeline of the evaporator is connected to the outboard space through the brine pumping pipeline and the ejector brine chopper, while the supply and discharge pipelines of the washing and draining system are equipped with an additional electromagnet a two-way valve electrically connected to the salinometer.

In addition, the saline condensate discharge pipeline at the inlet to the evaporator is hydraulically connected to the flushing pipeline 25 of the separation device.

The drawing shows a diagram of the ship desalination plant.

The installation contains an evaporator, 1, condenser 2, heater 3,

30 condensate pump 4, pump 5 seawater, salimeter b with sensor

7, a water jet ejector 8 brine and a washing-separation device 9, communicated by pipelines 10-22 with valves 23-25.

The installation works as follows.

The outboard water from the pump 5 is supplied through the heater 3, condenser 2, pipelines 17 and 18 enters the evaporator cavity 1. From the latter, brine enters the inlet of the ejector through pipe 19

8, in which water from pipeline 17 is used as the working water. Condensate from condenser

2 by pump 4 through line 11 is supplied to two-way valves 23 and 24. In the stable operation mode of the evaporator, when the salinity of the condensate is within the normal range, from valve 23 condensate through pipe 15 is supplied to consumers and condensate is supplied from pipe 24 through pipe 12 on flushing separator device 9 with subsequent discharge through pipelines 13 and 14 into the cavity of the evaporator 1.

At increased salinity of condensate at the outlet of pump 4 from the sensor, a signal is sent to the salinometer b and under the influence of the salinometer b on valves 23 and 24 the water supply to the pipes 15 and 12 stops, resulting in salted condensate through pipes 14 and 10 being drained into the evaporator 1, for example, into a cavity near the surface of brine evaporation. As a result, the brine salinity decreases, its violent boiling up on the surface with salt flushing into the secondary steam is stopped, and the normal operation of the evaporator and the installation as a whole is restored. At the same time, the salinity of the condensate decreases to the norm and, under the influence of the salt gauge b, the valves 23 and 24 are reset.

After the desalination plant is taken out of operation, the evaporator 1 is dried by an ejector 8, for which water from the pump 5 is supplied to the latter and the valve 25 is opened, in the result of which the brine is pumped overboard without draining it into the hold.

EFFECT: elimination of saline condensate in the hold

engine compartment of the vessel and send it to the evaporator, thereby ensuring stable operation of the evaporator and eliminate useless leaks of fresh water.

Claims (2)

1. Vessel desalination plant, containing a condenser, with an inlet which communicates the internal cavity of the evaporator, equipped with a drainage pipe, a heater, a washing-separation device. with water supply and discharge piping, a condensate pump, at the outlet of which a salimeter sensor is installed, electrically connected to an electromagnetic switching valve, the outlet of which is connected to the pipeline of saline condensate discharge, and the seawater pump, the discharge pipe of which is hydraulically through the heater and condenser associated with the brine ejector, communicated at the inlet of the brine pumping pipeline, with the evaporator, and at the outlet with the outboard space, characterized in that with efficiency goals installation and convenience of its service by eliminating the discharge of saline water into the hold, the pipeline of saline condensate discharge is hydraulic, communicated with the internal cavity of the evaporator, and the evaporator drainage pipeline communicates with the outboard space through the brine pumping pipeline and the brine ejector, while water supply and discharge pipelines the flushing and separating device is equipped with an additional two-position electromagnetic valve, electrically connected with the salinometer. 2. The installation according to claim 1, characterized in that the pipeline for dumping saline condensate at the inlet to the evaporator is hydraulically connected to the drain pipeline of the flushing and separating device. Information sources, taken into account in the examination 1. Akimov P.P. Ship automated power plants. M., Transport, 1980, p. 323, fig. 183a (prototype). SaffoflfnHOff Soda, / zasso o / f far / n, / f / ffecf ceft 13 / g / 22