KR20170084742A - Cooling control device of condenser for ship - Google Patents

Abstract

The present invention relates to a condenser cooling regulator for a ship, comprising: a boiler for generating steam; A cascade tank for supplying the feed water for generating steam of the boiler; A boiler circulation line for circulating the boiler and the cascade tank; A condenser installed in the circulation line for condensing the remaining surplus steam to be used; A cooler line for supplying cooling water through the condenser to convert steam into condensed water; And a heating steam supply unit installed in the circulation line for supplying steam for heating the cascade tank, wherein the condenser is provided with a temperature sensor for sensing the temperature of the condensed water, And a flow control valve.
Accordingly, since the condensed water can be supplied to the cascade tank in accordance with the temperature of the feed water of the cascade tank without undercooling of the condensed water, the amount of steam used for heating the heated cascade tank can be effectively reduced.

Description

Technical Field [0001] The present invention relates to a COOLING CONTROL DEVICE OF CONDENSER FOR SHIP,

The present invention relates to a condenser cooling regulator for a ship, and more particularly, to a condenser cooling regulator for a ship, which can suppress the use of steam to heat the cascade tank through temperature control that matches the condensate temperature of the condenser with the feed water temperature inside the cascade tank The present invention relates to a condenser cooling regulator for a ship.

Generally, the ship is operated through a main engine that generates a driving force according to the combustion consumption of the fuel.

The boats are also equipped with boilers for heating the water and supplying the necessary steam steam or hot water.

The steam produced in the boiler is distributed in the vessel where steam is needed, for example, to heat the tank of the engine room or to drive the steam turbine.

At this time, the remaining surplus steam and the condensed water recovered after the steam and steam discharged from the steam turbine are used are cooled through the condenser and the cooler, and recovered so that they can be used again.

Hereinafter, a conventional boiler supply system will be described with reference to FIG.

As shown in the drawings, the boiler supply system according to the related art includes a boiler 10, a cascade tank 20, a boiler circulation line 30, a heating steam supply unit 40, a condenser 50 and a cooler line 60, .

That is, the steam generated in the boiler is used as a multipurpose steam, and the remaining steam and the condensed water after use are usually recovered by the atmospheric pressure condenser. The vapor and the condensed water recovered by the condenser are cooled from the cooler line and converted into low temperature condensate. The cooled condensate is then supplied to the cascade tank and the hot water stored in the cascade tank is again supplied to the boiler.

At this time, in order to generate the boiler steam, the temperature of the feed water must be maintained at a constant temperature (80 ° C to 90 ° C). Therefore, the heating steam supply portion is continuously operated to maintain an appropriate temperature of the cascade tank.

However, in the boiler supply system according to the related art, since the cooler line for cooling the condenser always has a constant flow rate according to the designed flow rate condition regardless of the temperature of the condensate, the over-cooling phenomenon occurs frequently Therefore, there is a problem in that the amount of steam used for heating the cascade tank for heating the steam supply portion is increased, thereby wasting the steam of the boiler.

Patent Document: Japanese Patent Application Laid-Open No. 2014-0058265 (Apr.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steam turbine for heating a cascade tank through a temperature control that matches a condensate temperature of a condenser with a supply water temperature inside a cascade tank. And to suppress the use of the condenser cooling control device for a ship.

In order to achieve the above object, a condenser cooling regulator for a ship according to the present invention comprises: a boiler for generating steam; A cascade tank for supplying the feed water for generating steam of the boiler; A boiler circulation line for circulating the boiler and the cascade tank; A condenser installed in the circulation line for condensing the remaining surplus steam to be used; A cooler line for supplying cooling water through the condenser to convert steam into condensed water; And a heating steam supply unit installed in the circulation line for supplying steam for heating the cascade tank, wherein the condenser is provided with a temperature sensor for sensing the temperature of the condensed water, And a flow control valve.

And a bypass line bypassing the coolant line without passing through the flow control valve is additionally provided in the cooler line.

Wherein the flow control valve comprises a three-way valve for distributing cooling water in three directions, and a control unit for controlling the three-way valve.

The temperature sensor is installed in a discharge line of the condenser and is connected to a control unit of the flow control valve.

And a circulation line connecting the boiler and the cascade tank is constituted by a first pump and a second pump for setting the supply amount of the supply water step by step.

According to the present invention, the temperature sensor for sensing the temperature of the condensed water and the flow rate control valve for controlling the flow rate of the cooling water are provided, so that the condensed water can be supplied to the cascade tank at the supplied water temperature without overcooling the condensed water There is an effect that the amount of steam used in the heating steam supply portion, which is wasted for heating the cascade tank, can be effectively reduced.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a configuration and flow diagram of a prior art boiler feed system.
2 is a configuration and a flow chart of a marine condenser cooling control apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIG. 2 attached hereto.

As shown in the figure, the condenser cooling control device for a ship according to the present invention includes a boiler 100 for generating steam, a cascade tank 200 for supplying water for generating steam of the boiler 100, A condenser 400 installed in the circulation line 300 for condensing excess steam remaining in the circulation line 300 and a condenser 400 installed in the circulation line 300 for circulating and circulating the condensed water to the cascade tank 200, A cooler line 500 for supplying cooling water to vary the steam to condensed water and a heating steam supply unit 600 installed in the circulation line 300 to supply steam for heating the cascade tank 200 .

First, the boiler 100 generates steam or hot water by heating the feed water using a heating medium, and the generated steam and hot water are distributed and supplied to each supply source required in the ship.

One side of the boiler 100 is provided with an inlet through which the supply water is introduced from a cascade tank 200 to be described later, and a discharge portion for discharging heat-exchanged hot water by steam is formed on the other side.

The cascade tank 200 supplies the feed water for generating steam of the boiler 100, and the feed water stored therein is maintained at a constant temperature (80 to 90 ° C) for stable steam generation.

Although not shown in the drawing, it is a matter of course that a temperature sensing unit for checking the temperature of the supply water stored in the cascade tank 200 in real time is formed.

The boiler circulation line 300 circulates the boiler 100 and the cascade tank 200 to guide the steam generated in the boiler 100 to the steam supply source in the ship and to use the remaining surplus steam again It is a pipe structure with a circulating connection structure that can be utilized.

The condenser 400 is installed in the circulation line 300, and collects and uses remaining surplus steam to be used.

That is, the steam passing through the condenser 400 is changed into liquid condensate.

The cooler line 500 supplies cooling water which passes through the condenser 400 and changes the steam to condensed water, wherein the cooling water uses fresh water or seawater.

The heating steam supply unit 600 is installed in the circulation line 300 and supplies heating steam to the cascade tank 200 to increase the temperature of the supply water.

The construction of the boiler 100, the cascade tank 200, the boiler circulation line 300, the condenser 400, the cooler line 500 and the heating steam supply unit 600 is well known in the art Its concrete configuration and operation effects are omitted.

Hereinafter, the temperature sensor 700 and the flow control valve 800, which are characteristic components of the present invention, will be described in detail.

That is, the condenser 400 of the condenser cooling apparatus for a ship according to the present invention is provided with a temperature sensor 700 for sensing the temperature of the condensed water, and the cooler line 500 is provided with a flow control valve 800).

The temperature sensor 700 senses the temperature of the condensed water discharged from the condenser 400 in real time.

In other words, the temperature sensor 700 can control the supply amount of the cooling water through the flow control valve 800 when the supercooling phenomenon of the condensed water occurs.

The temperature sensor 700 is installed in a discharge line of the condenser 400 and is electrically connected to the control unit 820 of the flow control valve 800.

The flow control valve 800 is installed in the cooler line 500 and controls the flow rate of the cooling water supplied to the condenser 400.

That is, when it is determined that the temperature of the condensed water discharged from the condenser 400 is 80 ° C or less, the flow control valve 800 operates to reduce the amount of the cooling water supplied to the condenser 400, The temperature of the condensed water discharged from the condenser 400 can be adjusted by discharging the condensed water directly to the outlet of the cooler line 500 without passing through the condenser 400.

The flow control valve 800 includes a three-way valve 810 for distributing cooling water in three directions and a control unit 820 for controlling the three-way valve 810.

The cooler line 500 further includes a bypass line 900 bypassing the flow control valve 800 without cooling water.

The bypass line 900 is configured to be able to flow directly to the condenser 400 without shutting off the cooling water during maintenance or periodic inspection of the flow control valve 800.

The circulation line 300 between the boiler 100 and the cascade tank 200 includes a first pump 350 and a second pump 360 for setting the supply amount of the supply water in stages.

That is, the first pump 350 supplies the supply water at a low speed, and the second pump 360 supplies the supply water at a high speed.

According to the present invention configured as described above, the temperature sensor 700 for sensing the temperature of the condensed water and the flow control valve 800 for controlling the flow rate of the cooling water are provided, so that the supply of water to the cascade tank 200 The condensed water can be supplied to the cascade tank 200, thereby effectively reducing the steam consumption of the heating steam supply unit 600, which is wasted for heating the cascade tank 200.

100: Boiler
200: Cascade tank
300: circulation line
350: first pump
360: Second pump
400: condenser
500: Cooler line
600: Heating steam supply
700: Temperature sensor
800: Flow control valve
810: Three-way valve
820:

Claims (5)

Boilers for generating steam;
A cascade tank for supplying the feed water for generating steam of the boiler;
A boiler circulation line for circulating the boiler and the cascade tank;
A condenser installed in the circulation line for condensing the remaining surplus steam to be used;
A cooler line for supplying cooling water through the condenser to convert steam into condensed water; And
And a heating steam supply unit installed in the circulation line for supplying steam for heating the cascade tank,
Wherein the condenser is provided with a temperature sensor for sensing the temperature of the condensed water, and the cooler line further comprises a flow control valve for controlling the flow rate of the cooling water.
The method according to claim 1,
Wherein the cooler line is further provided with a bypass line bypassing the cooling water without passing through the flow control valve.
3. The method of claim 2,
Wherein the flow control valve comprises a three-way valve for distributing cooling water in three directions, and a control unit for controlling the three-way valve.
The method of claim 3,
Wherein the temperature sensor is installed in a discharge line of the condenser and is connected to a control unit of the flow control valve.
5. The method according to any one of claims 1 to 4,
Wherein the circulation line connecting the boiler and the cascade tank comprises a first pump and a second pump for setting the supply amount of the supply water stepwise.

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