CN113651382A - FPSO sump oil water cabin heating system - Google Patents
FPSO sump oil water cabin heating system Download PDFInfo
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- CN113651382A CN113651382A CN202111031185.9A CN202111031185A CN113651382A CN 113651382 A CN113651382 A CN 113651382A CN 202111031185 A CN202111031185 A CN 202111031185A CN 113651382 A CN113651382 A CN 113651382A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a heating system of an FPSO sump oil water tank, which consists of a primary heating system and a secondary heating system. The temperature sensor monitors the temperature of the hot water inlet pipeline of the secondary heating system to control the steam heating three-way control valve, when the temperature of the hot water inlet pipeline of the secondary heating system is higher than a set value, a steam heating medium is directly bypassed, when the temperature of the hot water inlet pipeline of the secondary heating system is lower than the set value, a corresponding steam pipeline is opened, steam is transmitted into the heat exchanger, and the hot water inlet pipeline is heated to achieve the purpose of automatic control. The one-level heating system is a high-temperature high-pressure heating system, and is converted into a low-temperature low-pressure heating system through the second-level heating system, so that the heating medium and the heating coil in the sump oil water tank are effectively protected, the risk of leakage of the heating pipe in the tank is reduced, the service life of the heating coil is prolonged, and the maintenance-free requirement in the life cycle of the sump oil water tank of the FPSO ship is met.
Description
Technical Field
The invention relates to the technical field of ship design and construction, in particular to a FPSO sump oil water tank heating system.
Background
The FPSO is a ship for offshore floating production, storage and unloading of oil, and has the main functions of offshore oil field treatment, storage, loading and unloading of oil products, and is a floating oil field processing plant on the sea. Due to the particularity of the FPSO, the conventional requirement that the dock is not accessed for 25 years is met, so that high requirements are imposed on the design and construction of a pipeline system and equipment. Sump oil tanks are often used for storing tank wash water which needs to be heated for use in the cargo tank wash. The conventional design is that the steam that comes from the upper portion module passes through heating coil and directly heats the washing cabin water of sump oil water under-deck, and the defect of this kind of design is, and the steam of upper portion module is high temperature high pressure, and the temperature is 215 ℃ generally, and pressure is 40 kilograms, and is required highly to heating coil to because high temperature high pressure, lead to heating coil to corrode and accelerate, heating coil sets up in the under-deck, the change of the corrosion coil of being not convenient for.
Disclosure of Invention
The invention aims to effectively protect the heating coil in the dirty oil water tank, reduce the risk of maintaining the heating coil of the dirty oil water tank in the life cycle of an FPSO (floating production storage and offloading) ship and prolong the service life of the FPSO.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a FPSO sump oil water cabin heating system, includes two-stage heating system, is respectively: a first-stage heating system for heating the second-stage heating system and a second-stage heating system for heating the sump oil water tank.
The primary heating system comprises: a steam heating input pipeline, a heat exchanger and a steam heating return pipeline. The steam heating input pipeline is connected with an inlet of a steam pipeline of the heat exchanger, and an outlet of the steam pipeline of the heat exchanger is connected with the steam heating return pipeline, so that a heating system taking steam as a circulating medium is formed.
The second grade heating system is a heating system taking hot water as a heating medium, and the structure of the second grade heating system comprises: the heating system comprises a heating water cabin inlet pipeline, a heating water return pipeline, a sump oil water cabin heating coil, a heat exchanger and a heating circulating pump. An inlet of the heating water cabin inlet pipeline is connected with a circulating water outlet outside the heat exchanger shell, and outlets of the heating water cabin inlet pipeline are respectively introduced into a plurality of parallel sump oil water cabin heating coil water inlet pipes; the water outlet pipes of the heating coils of the sump oil tank which are connected in parallel are connected with the inlet of the heating water return pipeline, the outlet of the heating water return pipeline is connected with a heating circulating pump, and the outlet of the heating circulating pump is connected with the circulating water inlet outside the shell of the heat exchanger.
The heating temperature of the two-stage heating system is adjusted through the combined action of the following two aspects: on one hand, a steam heating input pipeline control valve is installed at the inlet of the steam heating input pipeline, and a steam heating return pipeline control valve is installed at the outlet of the steam heating return pipeline to control the steam flow. On the other hand, a steam heating three-way control valve is arranged on a steam heating input pipeline section between the steam heating input pipeline control valve and the heat exchanger, and temperature feedback is established between the steam heating three-way control valve and the heating water cabin inlet pipeline to automatically control the opening and the steam reflux flow.
The automatic temperature control process of the two-stage heating system is as follows:
temperature feedback is established between the steam heating three-way control valve and the heating water cabin inlet pipeline;
the temperature of the heating hot water cabin inlet pipeline is monitored in real time through a temperature sensor to be compared with a set temperature value, a temperature adjusting signal is formed by a temperature difference value obtained by the temperature sensor and is transmitted to the steam heating three-way control valve, the steam heating three-way control valve adjusts the steam flow of a steam heating input pipeline in the primary heating system through feedback, the heat exchange temperature of the heat exchanger is further adjusted, and finally the return water temperature of the heating water return pipeline is adjusted;
the temperature signal is obtained by converting the temperature of the heating water cabin inlet pipeline acquired by the temperature sensor in real time through the temperature transmitter;
the temperature of the two-stage heating system is automatically controlled under the following two conditions:
firstly, when the temperature of a heated hot water cabin inlet pipeline is higher than a set value, steam directly flows back to a steam heating return pipeline from a bypass pipe of the steam heating three-way control valve;
and secondly, when the temperature of the heated hot water cabin inlet pipeline is lower than a set fixed value, the steam heating three-way control valve is opened to convey steam into the heat exchanger.
Preferably, the heating coil of the sump oil tank is an aluminum brass pipeline. The aluminum brass pipeline has large conduction coefficient, is favorable for heat conduction, has good anticorrosion effect and prolongs the service life.
Preferably, the temperature feedback established between the steam heating three-way control valve and the heating water cabin inlet pipeline is that the temperature of the heating hot water cabin inlet pipeline is monitored through a temperature sensor to obtain the flow of the steam heating three-way control valve, when the temperature of the heating hot water cabin inlet pipeline is higher than a set value, steam directly flows back to the steam heating gas return pipeline from a bypass, and when the temperature of the heating hot water cabin inlet pipeline is lower than the set value, the steam heating three-way control valve is opened to convey the steam into the heat exchanger.
Preferably, the heating water cabin inlet pipeline and the heating water return pipeline are provided with pipeline U-shaped bends on the pipe sections which enter the hot coil pipe and enter and exit the hot coil pipe. The device is used for preventing the pipeline from being affected by expansion with heat and contraction with cold and deformation of the ship body.
Preferably, the heating water return pipeline is also connected with a water replenishing tank at the front section of the heating circulating pump for replenishing the heating water.
The control system realizes automatic temperature control, and when the heating system is used, the heating hot water medium is transferred into the heating coil pipe through the hot water circulating pump and the secondary heating system to uniformly and circularly heat the heated medium in the dirty oil water tank, so that the heating coil pipe in the dirty oil water tank is effectively protected, and the leakage risk of the heating coil pipe in the tank is reduced.
Drawings
FIG. 1 is a flow chart of the FPSO sump tank heating system of the present invention.
The system comprises a heating circulating pump 1, a heat exchanger 2, a water replenishing tank 3, a dirty oil water tank 4, a dirty oil water tank heating coil 5, a steam heating three-way control valve 6, a heating water tank inlet pipeline 7, a heating water return pipeline 8, a steam heating input pipeline 9, a steam heating return pipeline 10, a temperature sensor 11, a heating coil tank inlet control valve 12, a pipeline U-shaped bend 13, a steam heating input pipeline control valve 14, a steam heating return pipeline control valve 15 and a temperature transmitter; A. sump oil water tank, B main deck structure.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, a heating system for FPSO dirty oil tank includes two stages of heating systems, which are: the first-stage heating system is used for heating the second-stage heating system, and the second-stage heating system is used for heating the sump oil water tank;
the primary heating system comprises: a steam heating input line 8, a heat exchanger 2, and a steam heating return line 9. The steam heating input pipeline 8 is connected with an inlet of a steam pipeline of the heat exchanger 2, and an outlet of the steam pipeline of the heat exchanger 2 is connected with the steam heating return pipeline 9, so that a heating system taking steam as a circulating medium is formed. The heating medium of the primary heating system is steam, and the heated medium is hot water.
The second grade heating system is a heating system taking hot water as a heating medium, and the structure of the second grade heating system comprises: the heating system comprises a heating water inlet pipeline 6, a heating water return pipeline 7, a sump oil water tank heating coil 4, a heat exchanger 2 and a heating circulating pump 1. An inlet of the heating water cabin inlet pipeline 6 is connected with a circulating water outlet outside the shell of the heat exchanger 2, and outlets of the heating water cabin inlet pipeline are respectively communicated with a plurality of water inlet pipes of the dirty oil cabin heating coil pipes 4 which are connected in parallel; the water outlet pipes of the heating coils 4 of the sump oil water tank which are connected in parallel are connected with the inlet of the heating water return pipeline 7, the outlet of the heating water return pipeline 7 is connected with the heating circulating pump 1, and the outlet of the heating circulating pump 1 is connected with the circulating water inlet outside the shell of the heat exchanger 2. Dirty oil water tank heating coil 4 adopts the aluminium brass pipeline, and its conductivity coefficient is big, is favorable to the heat conduction to anticorrosive effectual, increase of service life.
The heating water return pipeline 7 is also connected with a water replenishing tank 3 at the front section leading into the heating circulating pump 1 to replenish the heating water. The second grade heating system is through hot water entering cabin pipeline 6 arrange hot water to heating coil 4 in the dirty oil water cabin, through heating coil 4 heating dirty oil water medium in the dirty oil water cabin A, the second grade heating system heating medium is hot water, is the dirty profit by the heating medium.
The heating temperature of the two-stage heating system is adjusted through the combined action of the following two aspects:
on one hand, a steam heating input pipeline control valve 13 is installed at the inlet of the steam heating input pipeline 8, and a steam heating return pipeline control valve 14 is installed at the outlet of the steam heating return pipeline 9 to control the steam flow;
on the other hand, a steam heating three-way control valve 5 is arranged on the section of the steam heating input pipeline 8 between the steam heating input pipeline control valve 13 and the heat exchanger 2, and temperature feedback is established between the steam heating three-way control valve 5 and the heating water cabin inlet pipeline 6 to automatically control the opening and the steam backflow flow.
The automatic temperature control process of the two-stage heating system is as follows:
temperature feedback is established between the steam heating three-way control valve 5 and the heating water cabin inlet pipeline 6;
the temperature of the heated hot water inlet pipeline 6 is monitored in real time through a temperature sensor 10 to be compared with a set temperature value, a temperature adjusting signal formed by a temperature difference value obtained by the temperature sensor 10 is transmitted to the steam heating three-way control valve 5, the steam heating three-way control valve 5 adjusts the steam flow of a steam heating input pipeline 8 in the primary heating system through feedback, the heat exchange temperature of the heat exchanger 2 is further adjusted, and finally the return water temperature of the heated water return pipeline 7 is adjusted;
wherein, the temperature signal is obtained by converting the temperature of the heating water entry pipeline 6 acquired by the temperature sensor 10 in real time through the temperature transmitter 15;
the temperature of the two-stage heating system is automatically controlled under the following two conditions:
firstly, when the temperature of the heated hot water cabin inlet pipeline 6 is higher than a set value, steam directly flows back to the steam heating return pipeline 9 from a bypass pipe of the steam heating three-way control valve 5;
and secondly, when the temperature of the heated hot water cabin inlet pipeline 6 is lower than a set fixed value, the steam heating three-way control valve 5 is opened to convey steam to the heated hot water cabin inlet pipeline in the heat exchanger 2. The second-stage heating system transfers the heating hot water medium to the heating coil pipe 4 through the hot water circulating pump 1 to uniformly and circularly heat the heated medium in the sump oil water tank A.
And pipeline U-shaped bends 12 are arranged on the pipe sections of the heating water cabin inlet pipeline 6 and the heating water return pipeline 7 which enter and exit the hot coil pipe 4.
When the heating system is used, the primary heating system is a high-temperature high-pressure heating system, and is converted into a low-temperature low-pressure heating system through the secondary heating system, so that heated media in the sump oil water tank are effectively protected, and the leakage risk of the heating pipe in the tank is reduced. In order to prevent the pipeline from expanding with heat and contracting with cold and prevent the ship body from deforming to influence the pipeline system, pipeline U-shaped bends 12 are arranged on the pipeline sections entering the thermal coil pipe 4. In order to meet the requirement of the heating water supplement of the secondary heating system, a water supplement tank 3 is connected to the front section of the heating circulating pump 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (5)
1. The utility model provides a FPSO sump oil water cabin heating system which characterized in that, includes two-stage heating system, is respectively: a first-stage heating system for heating the second-stage heating system, and a second-stage heating system for heating the sump oil water tank;
the primary heating system comprises: a steam heating input pipeline (8), a heat exchanger (2) and a steam heating return pipeline (9);
wherein the steam heating input pipeline (8) is connected with a steam pipeline inlet of the heat exchanger (2), and a steam pipeline outlet of the heat exchanger (2) is connected with the steam heating return pipeline (9), so that a heating system taking steam as a circulating medium is formed;
the second grade heating system is a heating system taking hot water as a heating medium, and the structure of the second grade heating system comprises: a heating water inlet pipeline (6), a heating water return pipeline (7), a sump oil water tank heating coil (4), the heat exchanger (2) and a heating circulating pump (1);
an inlet of the heating water cabin inlet pipeline (6) is connected with a circulating water outlet outside the shell of the heat exchanger (2), and outlets of the heating water cabin inlet pipeline and the circulating water outlet are respectively communicated into a plurality of water inlet pipes of the dirty oil water cabin heating coil (4) which are connected in parallel; the water outlet pipes of the heating coils (4) of the sump oil water tank which are connected in parallel are connected with the inlet of the heating water return pipeline (7), the outlet of the heating water return pipeline (7) is connected with the heating circulating pump (1), and the outlet of the heating circulating pump (1) is connected with the circulating water inlet outside the shell of the heat exchanger (2); the heating temperature of the two-stage heating system is adjusted through the combined action of the following two aspects:
on one hand, a steam heating input pipeline control valve (13) is installed at the inlet of the steam heating input pipeline (8), and a steam heating return pipeline control valve (14) is installed at the outlet of the steam heating return pipeline (9) to control the steam flow;
on the other hand, a steam heating three-way control valve (5) is arranged on the section of the steam heating input pipeline (8) between the steam heating input pipeline control valve (13) and the heat exchanger (2), and temperature feedback is established between the steam heating three-way control valve (5) and the heating water cabin inlet pipeline (6) to automatically control the opening and the steam reflux flow;
the automatic temperature control process of the two-stage heating system is as follows:
temperature feedback is established between the steam heating three-way control valve (5) and the heating water cabin inlet pipeline (6);
the temperature of the heated hot water inlet pipeline (6) is monitored in real time through a temperature sensor (10) to be compared with a set temperature value, a temperature adjusting signal is formed by a temperature difference value obtained by the temperature sensor (10) and is transmitted to the steam heating three-way control valve (5), the steam heating three-way control valve (5) adjusts the steam flow of a steam heating input pipeline (8) in the primary heating system through feedback, the heat exchange temperature of the heat exchanger (2) is adjusted, and the return water temperature of the heated water return pipeline (7) is adjusted finally;
wherein the temperature signal is obtained by converting the temperature of the heating water cabin inlet pipeline (6) acquired by the temperature sensor (10) in real time through the temperature transmitter (15);
the temperature of the two-stage heating system is automatically controlled under the following two conditions:
firstly, when the temperature of a heated hot water cabin inlet pipeline (6) is higher than a set value, steam directly flows back to a steam heating return pipeline (9) from a bypass pipe of the steam heating three-way control valve (5);
secondly, when the temperature of the heating hot water cabin inlet pipeline (6) is lower than a set fixed value, the steam heating three-way control valve (5) is opened to convey steam into the heat exchanger (2).
2. The FPSO sump oil tank heating system according to claim 1, wherein the sump oil tank heating coil (4) is an aluminium brass pipe.
3. The FPSO sump oil tank heating system according to claim 1, wherein the temperature feedback between the steam heating three-way control valve (5) and the heating water inlet pipe (6) is established by monitoring the temperature of the heating hot water inlet pipe (6) through a temperature sensor to control the flow rate of the steam heating three-way control valve (5), wherein when the temperature of the heating hot water inlet pipe (6) is higher than a set value, steam directly flows back from the bypass to the steam heating return pipe (9), and when the temperature of the heating hot water inlet pipe (6) is lower than a set fixed value, the steam heating three-way control valve (5) is opened to deliver steam into the heat exchanger (2).
4. The FPSO sump oil tank heating system according to claim 1 wherein the heated water tank inlet line (6) and the heated water return line (7) are provided with a line U-bend (12) in both the inlet and outlet sections into and out of the hot coil (4).
5. The FPSO sump oil-water tank heating system according to claim 1, wherein the heating water return line (7) is further connected with a water replenishing tank (3) at the front section leading into the heating circulation pump (1) for replenishing heating water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111031185.9A CN113651382A (en) | 2021-09-03 | 2021-09-03 | FPSO sump oil water cabin heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111031185.9A CN113651382A (en) | 2021-09-03 | 2021-09-03 | FPSO sump oil water cabin heating system |
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| CN113651382A true CN113651382A (en) | 2021-11-16 |
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| CN202111031185.9A Pending CN113651382A (en) | 2021-09-03 | 2021-09-03 | FPSO sump oil water cabin heating system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205261524U (en) * | 2015-11-20 | 2016-05-25 | 大连船舶重工集团有限公司 | Marine boiler hot well steam -jet ejector heating system |
| CN205316684U (en) * | 2015-12-21 | 2016-06-15 | 上海沃迪自动化装备股份有限公司 | Temperature control system is made to hot water |
| CN207501734U (en) * | 2017-09-11 | 2018-06-15 | 华东理工大学工程设计研究院有限公司 | A kind of temperature control system of heat-exchanger rig heat medium |
| CN111459209A (en) * | 2020-04-28 | 2020-07-28 | 广东一钛科技有限公司 | TCU temperature control system and TCU temperature control method |
-
2021
- 2021-09-03 CN CN202111031185.9A patent/CN113651382A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205261524U (en) * | 2015-11-20 | 2016-05-25 | 大连船舶重工集团有限公司 | Marine boiler hot well steam -jet ejector heating system |
| CN205316684U (en) * | 2015-12-21 | 2016-06-15 | 上海沃迪自动化装备股份有限公司 | Temperature control system is made to hot water |
| CN207501734U (en) * | 2017-09-11 | 2018-06-15 | 华东理工大学工程设计研究院有限公司 | A kind of temperature control system of heat-exchanger rig heat medium |
| CN111459209A (en) * | 2020-04-28 | 2020-07-28 | 广东一钛科技有限公司 | TCU temperature control system and TCU temperature control method |
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