CN109533263B - Marine boiler condensate water and water supply system with water making function - Google Patents
Marine boiler condensate water and water supply system with water making function Download PDFInfo
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- CN109533263B CN109533263B CN201910088176.XA CN201910088176A CN109533263B CN 109533263 B CN109533263 B CN 109533263B CN 201910088176 A CN201910088176 A CN 201910088176A CN 109533263 B CN109533263 B CN 109533263B
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- water
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J1/00—Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D7/00—Auxiliary devices for promoting water circulation
- F22D7/04—Injectors for water or steam
Abstract
The invention discloses a marine boiler condensate and water supply system with a water making function, which comprises an evaporator, a steam ejector, a condenser, an ejector pump, a fresh water storage cabinet, a hot water well, a steam-liquid separator, a liquid level control three-way valve, a sea water pump, a fresh water pump, a water supply pump and a boiler water supply pump, wherein the evaporator is connected with the steam ejector; the vapor-liquid separator is respectively connected with the vapor utilization unit, the vapor pressure regulating valve and the vapor ejector; the steam ejector is connected with the evaporator, the evaporator is connected with the condenser and the ejector pump, and the outlet of the fresh water pump is connected with the liquid level control three-way valve. According to the invention, the waste heat of the steam is utilized to produce water, so that the waste caused by the fact that the waste heat is directly taken away by seawater is avoided, and the energy-saving effect is achieved. The invention is not affected by the running condition of the ship, and can be used during anchor breaking, port leaning and maneuvering navigation. The seawater of the invention is evaporated at the evaporation temperature of 10-25 ℃, the scaling amount is small, and the maintenance can be reduced.
Description
Technical Field
The invention belongs to the technical field of ship waste heat utilization, and particularly relates to a marine boiler condensation water and water supply system with a water making function.
Background
As shown in fig. 2, the main equipment of the existing marine boiler condensate and water supply system comprises an atmospheric condenser, a hot water well, a fresh water storage cabinet, a water supply pump and the like. Under normal operating conditions, uncondensed steam or excess steam generated by the exhaust gas boiler is cooled by seawater via an atmospheric condenser to condensate back to the hot well. All the waste heat is taken away by the seawater, and the energy is wasted greatly. On the other hand, most shipboard water generators adopt vacuum boiling type sea water desalination devices, and are mostly driven by cooling water of cylinder sleeves of ship main engines. However, the water production condition is limited by the running time of a ship host, and the ship can not be used when the ship is anchored or leaned against harbors. When the ship is anchored or leaned against harbors for too long, insufficient fresh water meeting the water quality of the marine boiler is usually caused.
Disclosure of Invention
In order to solve the problems in the prior art, the invention designs the marine boiler condensation water and water supply system with the water making function, which can recover the waste heat of steam and can provide fresh water of the marine boiler when the ship is anchored or leaned against harbor for a long time.
In order to achieve the above object, the technical scheme of the present invention is as follows: a marine boiler condensate and water supply system with a water making function comprises an evaporator, a steam ejector, a condenser, an ejector pump, a fresh water storage cabinet, a hot water well, a steam-liquid separator, a liquid level control three-way valve, a seawater pump, a fresh water pump, a water supply pump and a boiler water supply pump;
the outlet and the inlet of the boiler water supply pump are respectively connected with the boiler and the salinity meter;
the hot water well is respectively connected with the steam using unit, the salinity meter, the water supply pump, the fresh water storage cabinet and the liquid level control three-way valve;
the fresh water storage cabinet is respectively connected with the water supply pump and the liquid level control three-way valve;
the vapor-liquid separator is respectively connected with the vapor utilization unit, the vapor pressure regulating valve, the vapor ejector and the pressure reducing valve;
one outlet of the steam ejector is connected with the evaporator, and the other outlet of the steam ejector is connected with the evaporator heat exchange tube through a one-way valve;
one outlet of the evaporator is connected with a condenser heat exchange pipe, and the other outlet of the evaporator is connected with a jet pump through a one-way valve; the evaporation temperature of the evaporator ranges from 10 ℃ to 25 ℃;
the heat exchange tube in the evaporator is respectively connected with the pressure reducing valve and the condenser;
an inlet of the jet pump is connected with the condenser;
the outlet of the condenser is connected with a fresh water pump;
an inlet and an outlet of a heat exchange tube in the condenser are respectively connected with a sea water pump and a jet pump;
and the outlet of the fresh water pump is connected with a liquid level control three-way valve.
Further, the ratio of the area of the throat of the steam injector to the area of the throat of the nozzle is 4-100.
Further, the number of the sea chest is two; three seawater pumps are connected in parallel; the boiler feed water pumps are two, and the two boiler feed water pumps are connected in parallel.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the waste heat of the steam is utilized to produce water, so that the waste caused by the fact that the waste heat is directly taken away by seawater is avoided, and the energy-saving effect is achieved.
2. The invention is not affected by the running condition of the ship, and can be used during anchor breaking, port leaning and maneuvering navigation.
3. The seawater of the invention is evaporated at the evaporation temperature of 10-25 ℃, the scaling amount is small, and the maintenance can be reduced.
Drawings
FIG. 1 is a schematic diagram of a system according to the present invention.
Fig. 2 shows a conventional boiler condensate and feedwater system.
In the figure: 1. the device comprises a steam unit, 2, a steam pressure regulating valve, 3, a sea door, 4, a sea water pump, 5, a boiler, 6, a boiler feed pump, 7, a salinity meter, 8, a hot water well, 9, a water supply pump, 10, a fresh water storage cabinet, 11, a steam-liquid separator, 12, a steam injector, 13, an evaporator, 14, a jet pump, 15, a pressure reducing valve, 16, a condenser, 17, a fresh water pump, 18 and a liquid level control three-way valve.
Detailed Description
The invention is further illustrated by the figures and examples. As shown in fig. 1, the marine boiler condensate and water supply system with the water making function comprises an evaporator 13, a steam ejector 12, a condenser 16, an ejector pump 14, a fresh water storage cabinet 10, a hot water well 8, a vapor-liquid separator 11, a liquid level control three-way valve 18, a water pump 4, a fresh water pump 17, a water supply pump 9 and a boiler water supply pump 6;
the outlet and the inlet of the boiler feed water pump 6 are respectively connected with the boiler 5 and the salinity meter 7;
the hot water well 8 is respectively connected with the steam unit 1, the salinity meter 7, the water supply pump 9, the fresh water storage cabinet 10 and the liquid level control three-way valve 18;
the fresh water storage cabinet 10 is respectively connected with a water supply pump 9 and a liquid level control three-way valve 18;
the vapor-liquid separator 11 is respectively connected with the vapor unit 1, the vapor pressure regulating valve 2, the vapor ejector 12 and the pressure reducing valve 15;
one outlet of the steam ejector 12 is connected with the evaporator 13, and the other outlet is connected with a heat exchange tube of the evaporator 13 through a one-way valve;
one outlet of the evaporator 13 is connected with a heat exchange pipe of the condenser 16, and the other outlet is connected with the jet pump 14 through a one-way valve; the evaporation temperature of the evaporator 13 is 10-25 ℃;
the heat exchange tube in the evaporator 13 is respectively connected with a pressure reducing valve 15 and a condenser 16;
the inlet of the jet pump 14 is connected with a condenser 16;
the outlet of the condenser 16 is connected with a fresh water pump 17;
the inlet and outlet of the heat exchange tube in the condenser 16 are respectively connected with the sea water pump 4 and the jet pump 14;
the outlet of the fresh water pump 17 is connected with a liquid level control three-way valve 18.
Further, the ratio of the area of the throat of the steam injector 12 to the area of the throat of the nozzle is 4 to 100.
Further, the number of the sea chest 3 is two; three seawater pumps 4 are arranged, and the three seawater pumps 4 are connected in parallel; the number of the boiler feed water pumps 6 is two, and the two boiler feed water pumps 6 are connected in parallel.
The specific working process of the invention is as follows:
when the boiler 5 generates steam, a part of the steam passes through the steam pressure regulating valve 2 to the steam-liquid separator 11; the other part is subjected to temperature reduction after passing through the steam utilization unit 1 to form a steam-water mixture;
one part of the steam-water mixture enters the steam-liquid separator 11, and the other part is directly communicated with the hot water well to ensure the temperature of hot water in the hot water well 8.
In the steam-water mixture entering the steam-liquid separator 11, a part of condensed water passes through the pressure reducing valve 15 to the heat exchange tube of the evaporator 13; the remaining steam passes through the steam ejector 12 and enters the heat exchange tube of the evaporator 13 through the check valve. The steam ejector 12 generates vacuum under the driving of steam, the seawater in the evaporator 13 is evaporated at a lower temperature after heat exchange with the steam in the heat exchange tube, and the generated steam is pumped by the steam ejector 12 and enters the heat exchange tube in the evaporator 13 through a one-way valve. After exchanging heat with the seawater in the evaporator 13, the generated steam-water mixture enters the condenser 16 for secondary heat exchange, the steam-water mixture is totally condensed, and the generated fresh water enters the fresh water storage cabinet 10 or the hot water well 8 through the fresh water pump 17 and the liquid level control three-way valve 18 (enters the hot water well when the liquid level of the hot water well is low and enters the fresh water storage cabinet when the liquid level of the hot water well is high). When the water level of the hot water well 8 is too low and the condensed water can not meet a large amount of water consumption, fresh water flows from the fresh water storage cabinet 10 to the hot water well 8 through the water supply pump 9, and then flows from the salinity meter 7 and the boiler water supply pump 6 to the boiler 5, so that the circulation of the water vapor system is completed.
After the seawater passes through the seawater pump 4 to the heat exchange tube of the condenser 16 and exchanges heat with the vapor-water mixture, one part of the seawater is supplied to the evaporator 13 to supply evaporation water, and the other part of the seawater drives the jet pump 14 and is discharged out of the board, so that the jet pump 14 generates vacuum. The jet pump 14 pumps out the redundant part of the seawater in the evaporator 13 and the air in the condenser 16 through the one-way valve respectively, so that the whole system is kept in vacuum.
While particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely illustrative, and that many changes and modifications can be made to the embodiments of the invention without departing from the principles and spirit of the invention.
Claims (3)
1. The utility model provides a from marine boiler condensate water and water supply system of taking water function, its characterized in that: the device comprises an evaporator (13), a steam ejector (12), a condenser (16), an ejector pump (14), a fresh water storage cabinet (10), a hot water well (8), a vapor-liquid separator (11), a liquid level control three-way valve (18), a seawater pump (4), a fresh water pump (17), a water supply pump (9) and a boiler water supply pump (6);
the outlet and the inlet of the boiler feed water pump (6) are respectively connected with the inlet of the boiler (5) and the outlet of the salinity meter (7); the outlet of the boiler (5) is connected to the inlet of the steam unit (1) and the inlet of the steam pressure regulating valve (2);
the hot water well (8) is respectively connected with an outlet of the steam utilization unit (1), an inlet of the salinity meter (7), a water supply pump (9) and a liquid level control three-way valve (18); the hot water well (8) is connected with the fresh water storage cabinet (10) through a water supply pump (9);
the fresh water storage cabinet (10) is respectively connected with a water supply pump (9) and a liquid level control three-way valve (18);
the vapor-liquid separator (11) is respectively connected with the outlet of the vapor utilization unit (1), the outlet of the vapor pressure regulating valve (2), the inlet of the vapor ejector (12) and the inlet of the pressure reducing valve (15);
the other inlet of the steam ejector (12) is connected with one outlet of the evaporator (13), and the outlet of the steam ejector (12) is connected with the inlet of the heat exchange tube of the evaporator (13) through a one-way valve;
one inlet of the evaporator (13) is connected with the outlet of the heat exchange tube of the condenser (16), and the other outlet is connected with one inlet of the jet pump (14) through a one-way valve; the evaporation temperature of the evaporator (13) ranges from 10 ℃ to 25 ℃;
two ends of a heat exchange tube in the evaporator (13) are respectively connected with an outlet of the pressure reducing valve (15) and the condenser (16);
the other inlet of the jet pump (14) is connected with one outlet of the condenser (16) through a one-way valve;
the other outlet of the condenser (16) is connected with a fresh water pump (17);
the inlet and the outlet of the heat exchange tube in the condenser (16) are respectively connected with the outlet of the sea water pump (4) and the third inlet of the jet pump (14); the inlet of the sea water pump (4) is connected with a sea bottom door;
the outlet of the fresh water pump (17) is connected with a liquid level control three-way valve (18).
2. The marine boiler condensate and feedwater system with water making function of claim 1, wherein: the ratio of the throat area of the steam injector (12) to the throat area of the nozzle is 4-100.
3. The marine boiler condensate and feedwater system with water making function of claim 1, wherein: the number of the sea chest (3) is two; three seawater pumps (4) are arranged, and the three seawater pumps (4) are connected in parallel; the boiler feed water pumps (6) are two, and the two boiler feed water pumps (6) are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088176.XA CN109533263B (en) | 2019-01-29 | 2019-01-29 | Marine boiler condensate water and water supply system with water making function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088176.XA CN109533263B (en) | 2019-01-29 | 2019-01-29 | Marine boiler condensate water and water supply system with water making function |
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| CN109533263A CN109533263A (en) | 2019-03-29 |
| CN109533263B true CN109533263B (en) | 2023-09-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109533263B (en) * | 2019-01-29 | 2023-09-12 | 大连海事大学 | Marine boiler condensate water and water supply system with water making function |
| CN110726311B (en) * | 2019-08-07 | 2021-01-15 | 浙江海洋大学 | Marine steam recovery device |
| CN111998692A (en) * | 2020-08-27 | 2020-11-27 | 广船国际有限公司 | Marine steam water condensing system |
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