JP5634552B2 - Seawater heating device - Google Patents

Description

  The present invention relates to a seawater heating apparatus, and more particularly to a seawater heating apparatus that can quickly heat seawater (referred to as salt-containing water) flowing into a heating tank by a burner direct heating method.

  Generally, a seawater heater is supplied with high-temperature steam from a surrounding power plant or a separate boiler to heat seawater. Steam is condensed during the heating of the seawater, and the condensed water produced by condensing the steam is pumped by a condensate discharge pump connected to the lower part of the seawater heater via a condensate suction pipe, and then again at the power plant or boiler It is circulated in.

  Alternatively, indirect heating of seawater by heat exchange with a tube through which a heat medium is circulated by operating a burner by attaching a large number of tubes to the heating tank so that the seawater flowing into the heating tank of the seawater heater can be heated A heating method is used. Such an indirect heating type seawater heater has a low thermal efficiency, and therefore consumes a large amount of fuel for operating the burner, and is inferior in practicality and economy.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to quickly increase the thermal efficiency by heating the seawater flowing into the heating tank by the direct heating method of the burner, thereby reducing the amount of fuel consumed. It is to provide a seawater heating device that can be reduced.

  In addition, another object of the present invention is to reduce the cost and production cost because the structure of the heating tank and incidental equipment is simplified because high temperature and high pressure are not formed inside the heating tank when seawater is heated. Since it can be made compact, it is to provide a seawater heating device that can be installed and used regardless of location.

To achieve the above object, the seawater heating apparatus according to an embodiment of the present invention, the seawater heating device for heating by operation of seawater flowing into the heating tank burner, ignition of the burner arranged inside An inner cylinder that is sometimes heated and has a lower end opened, a discharge port that accommodates the inner cylinder and flows in from the outside through a seawater supply pipe along the inner wall surface of the inner cylinder, and the seawater at least one or more nozzles for injecting sea water provided to the branch pipe which is branched and connected to the supply pipe to the outer surface of the inner cylinder, a has the seawater is heated against the inner and outer surfaces of the inner cylinder An outer cylinder that retains and stores at a constant water level, a flue that communicates with the upper side of the outer cylinder and exhausts exhaust gas containing water vapor generated when seawater is heated by contact with the inner cylinder, and Connected to the ignition part of the burner A blower for supplying combustion air through the duct, and a water level regulator which regulates the water level of the seawater constant to be accumulated in the outer cylinder, provided on the outlet side of the flue, from the outer cylinder And a water separator that removes water contained in the exhaust gas .

  Preferably, the seawater heating device is provided in the duct in order to increase the combustion rate of the burner, and after preheating external air with waste heat of gas discharged through the flue, the burner And an air preheater for supplying to the ignition part.

  Further, preferably, the seawater heating apparatus is branched and connected to the seawater supply pipe, and the seawater supply pipe, the branch pipe, the inner cylinder and the outer cylinder are prevented from being corroded by residual salt when the seawater heating apparatus is not operated. In order to prevent this, a washing water supply pipe for supplying non-salt water to the seawater supply pipe, the branch pipe, the inner cylinder and the outer cylinder is further provided.

  The seawater heating device according to the embodiment of the present invention having the above-described configuration has the following merits.

  Since the seawater can be quickly heated by the contact between the seawater flowing into the heating tank of the seawater heating device and the combustion gas of the burner, the amount of fuel consumption is reduced and the maintenance cost of the equipment can be reduced.

  In addition, because high temperature and high pressure do not occur inside the heating tank when seawater is heated, the structure of the heating tank and auxiliary equipment is simplified, so production and installation costs are reduced, and more compact. It can be installed and used regardless of location.

It is the schematic of the seawater heating apparatus which concerns on one Embodiment of this invention. It is a use condition figure of the seawater heating device concerning one embodiment of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to be described in detail to such an extent that those skilled in the art to which the present invention can easily practice. However, this does not limit the technical idea and category of the present invention.

  As shown in FIGS. 1 and 2, a seawater heating device according to an embodiment of the present invention is a seawater heating device that heats seawater flowing into a heating tank by operation of a burner, and is a burner disposed therein. The inner cylinder 11 which is heated at the time of ignition 10 and whose lower end is opened, and the inner cylinder 11 are accommodated, and the seawater flowing from the outside through the seawater supply pipe 12 flows down along the inner wall surface of the inner cylinder 11. An outlet 12b and at least one or more nozzles 13 for injecting seawater supplied through a branch pipe 12a branched and connected to the seawater supply pipe 12 to the outer surface of the inner cylinder 11, and the inner and outer surfaces of the inner cylinder 11 Water vapor generated when seawater is heated by contact with the outer cylinder 14 that is in contact with the outer cylinder 14 and the upper and outer surfaces of the outer cylinder 14 and keeps the seawater heated in contact with the outer cylinder 14 and stored. Exhaust gas containing A flue 15 that blows, a blower 17 that supplies external air for combustion (referred to as oxygen) through a duct 16 connected to the igniter of the burner 10, and control to maintain the set minimum and maximum water levels. By doing so, the water level regulator 18 which adjusts the water level of the seawater stored by the outer cylinder 14 uniformly is provided.

  At this time, the seawater heating device is preferably further provided with a water separator 19 provided on the discharge port side of the flue 15 to remove the water contained in the exhaust gas from the outer cylinder 14.

  Preferably, the seawater heating device is provided in the duct 16 in order to increase the combustion rate of the burner 10, and after preheating external air with waste heat of gas discharged through the flue 15, An air preheater 20 that supplies the ignition unit of the burner 10 is further provided.

  Further, preferably, the seawater heating device is branched and connected to the seawater supply pipe 12, and when the seawater heating device is not operated, the seawater supply pipe 12, the branch pipe 12a, the inner cylinder 11 and the outer cylinder 14 are separated by residual salinity. In order to prevent corrosion, the apparatus further includes a seawater supply pipe 12, a branch pipe 12 a, and a washing water supply pipe 21 that supplies the inner cylinder 11 and the outer cylinder 14.

  In the figure, reference numeral 22 which is not described is a temperature sensor that detects the temperature of the heated seawater in the outer cylinder 14.

  Hereinafter, based on an accompanying drawing, the usage example of the seawater heating device concerning one embodiment of the present invention is explained in full detail.

  As shown in FIG. 2, by driving a pump (not shown) provided on the inlet side of the seawater supply pipe 12, seawater from outside passes through the discharge port 12 b of the seawater supply pipe 12 to the inner cylinder 11. At the same time, the water can be supplied to at least one nozzle 13 provided in the outer cylinder 14 via a branch pipe 12a branched and connected to the seawater supply pipe 12.

  At this time, the fuel is supplied to the ignition part of the burner 10 disposed in the inner cylinder 11 via a fuel supply pipe (not shown), and the blower 17 connected to the motor 23 is driven to drive the combustion external air. (Oxygen) is supplied to the ignition part of the burner 10 through the duct 16 to ignite the burner 10. At this time, the external air supplied to the ignition part of the burner 10 by the blower 17 is preheated by the air preheater 20 that exchanges heat with the waste heat of the gas discharged to the outside through the flue 15. is there. Thereby, the combustion rate of the burner 10 can be increased.

  On the other hand, since the inner cylinder 11 is heated by the flame of the burner 10, the inner cylinder 11 is supplied by seawater supplied through the discharge port 12 b of the seawater supply pipe 12 and flowing down along the inner surface of the inner cylinder 11, and the nozzle 13. It becomes possible to heat the seawater sprayed to the outer surface of each by heat exchange.

  As described above, the seawater heated in contact with the inner and outer surfaces of the inner cylinder 11 heated by the burner 10 flows down along the inner and outer surfaces of the inner cylinder 11 (the lower end portion is opened). Collect in the cylinder 14. At this time, the seawater collected in the outer cylinder 14 after heating is kept at the set water level by the water level adjuster 18. That is, when the water level of the seawater collected in the outer cylinder 14 is lower than the set lower limit value, the burner 10 is stopped to prevent overheating, whereas, when the seawater level of the outer cylinder 14 is higher than the set upper limit value. Controls the pump drive to adjust the amount of seawater flowing into the discharge port 12b and the nozzle 13.

  When the temperature detected by the temperature sensor 22 that detects the temperature of the seawater collected on the bottom surface of the outer cylinder 14 after being heated in contact with the inner cylinder 11 exceeds the set value, the combustion temperature of the burner 10 is adjusted. be able to.

  Further, when seawater is heated by contact with the inner and outer surfaces of the inner cylinder 11, moisture (including salt) generated in the outer cylinder 14 is discharged together with the gas discharged to the outside through the flue 15. Can be prevented. That is, by removing the moisture contained in the exhaust gas by the moisture separator 19 provided on the outlet side of the flue 15, it is possible to prevent the environment from being contaminated by the discharge of salt.

  Further, when the seawater heating device is not operated (refers to a case where the seawater heating device is stopped by inspection of the burner 10 or the like), the non-salt water is supplied to the seawater supply pipe via the washing water supply pipe 21 branched and connected to the seawater supply pipe 12. 12, the branch pipe 12a, the inner and outer surfaces of the inner cylinder 11 and the outer cylinder 14 are supplied to the seawater supply pipe 12, the branch pipe 12a, the inner and outer surfaces of the inner cylinder 11 and the inner surface of the outer cylinder 14. Since the residues such as salt are washed out, corrosion due to contact of these salts can be prevented.

  As described above, according to the seawater heating device according to one embodiment of the present invention, the seawater flowing into the heating tank can be quickly heated by the direct heating method of the burner to increase the thermal efficiency. In addition, since high temperature and high pressure do not occur inside the heating tank when seawater is heated, the structure of the heating tank and the incidental facilities becomes compact, so that these costs and manufacturing costs can be greatly reduced.

DESCRIPTION OF SYMBOLS 10 Burner 11 Inner cylinder 12 Seawater supply pipe 13 Nozzle 14 Outer cylinder 15 Flue 16 Duct 17 Blower 18 Water level regulator 19 Water separator 20 Air preheater 21 Washing water supply pipe 22 Temperature sensor

Claims (3)

In the seawater heating device that heats the seawater flowing into the heating tank by operating the burner,
Is heated during the ignition of the burner disposed within the inner cylinder lower portion is open,
The inner cylinder is housed and provided in a discharge port for flowing seawater flowing from the outside through the seawater supply pipe along the inner wall surface of the inner cylinder, and a branch pipe branched and connected to the seawater supply pipe. a, at least one or more nozzles for injecting on an outer surface of the inner cylinder, an outer cylinder to the reservoir while maintaining the sea water that has been heated in contact with the inner and outer surfaces of the inner cylinder at a constant level,
A flue that communicates with the upper side of the outer cylinder and exhausts exhaust gas containing water vapor generated when heating seawater by contact with the inner cylinder; and
A blower for supplying combustion air via a duct connected to the ignition part of the burner;
A water level adjuster that adjusts the water level of seawater stored in the outer cylinder to a constant level;
A moisture separator that is provided on the exhaust port side of the flue and removes moisture contained in the exhaust gas from the outer cylinder;
A seawater heating device comprising: An air preheater provided in the duct for increasing the combustion rate of the burner, and preheating external air with waste heat of gas discharged through the flue, and then supplying the air preheater to the ignition unit of the burner The seawater heating device according to claim 1 , wherein the seawater heating device is provided. In order to prevent the seawater supply pipe, the branch pipe, and the inner and outer cylinders from corroding due to residual salt when the seawater heating apparatus is not operated, the seawater supply pipe is branched and connected to the seawater supply pipe, The seawater heating device according to claim 1 , further comprising a branch pipe and a washing water supply pipe that supplies the inner cylinder and the outer cylinder.

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