CN113120184A - Pressure discharge loading system of cylindrical floating production oil storage and discharge device - Google Patents
Pressure discharge loading system of cylindrical floating production oil storage and discharge device Download PDFInfo
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- CN113120184A CN113120184A CN202110539218.4A CN202110539218A CN113120184A CN 113120184 A CN113120184 A CN 113120184A CN 202110539218 A CN202110539218 A CN 202110539218A CN 113120184 A CN113120184 A CN 113120184A
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- ballast
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
- B63B39/03—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses by transferring liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
- B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
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Abstract
The invention discloses a pressure discharge system of a cylindrical floating production oil storage and discharge device, which comprises a plurality of independent ballast tanks, a set of ballast pipe network and a set of discharge pipe network which are arranged in a ship body, wherein the ship body is designed to be cylindrical, the ballast pipe network comprises at least one ballast pump, a ballast distribution pipeline and a plurality of ballast branch pipes, and the discharge pipe network comprises a plurality of discharge branch pipes, discharge distribution pipelines, discharge pumps and sea discharge pipelines. The pressure and discharge loading system of the cylinder type floating production oil storage and discharge device disclosed by the invention has a relatively smaller water line surface, can adapt to frequent changes of the water level of the ship body by starting the ballast pipe network and the discharge pipe network to adjust the water level of the ship body, meets the requirement of the cylinder type floating production oil storage and discharge device on balancing the gravity center change in the cargo oil loading and unloading process, improves the reliability and stability of the cylinder type floating production oil storage and discharge device, and enhances the adaptability of the cylinder type floating production oil storage and discharge device to environmental conditions.
Description
Technical Field
The invention relates to the technical field of pressure discharge loading, in particular to a pressure discharge loading system of a cylindrical floating production oil storage and discharge device.
Background
With the increasing energy demand of the country and the development of exploration and development of marine resources, oil exploitation goes to deep sea. In order to meet the challenge of deep water oil and gas reservoir development, a Floating Production Storage and Offloading (FPSO) is a common carrier and a common deep water oil and gas development mode at present, and generally includes a ship type and a cylinder type.
The prior cylinder type floating production oil storage and discharge device has smaller radius of a ship body, relatively smaller water line surface and large gravity center change in the loading and unloading process of cargo oil, so that a pressure discharge system of the device is started to adjust the water level of the ship body more frequently, and the device has low stability, poor reliability and weak adaptability to environmental conditions.
Disclosure of Invention
The invention aims to provide a pressure and discharge loading system of a cylindrical floating production, storage and discharge device, which is used for improving the reliability and the adaptability to environmental conditions of the pressure and discharge loading system of the conventional cylindrical floating production, storage and discharge device.
The invention provides a pressure-discharge-carrying system of a cylindrical floating production oil storage and discharge device, which is arranged in a ship body, wherein the top and the bottom of the ship body are respectively provided with a main deck and a bottom plate and comprise a plurality of independent ballast tanks, a set of ballast pipe network and a set of discharge pipe network; a plurality of independent ballast tanks are annularly arranged around the interior of the hull; the ballast pipe network comprises at least one ballast pump, a ballast distribution pipeline and a plurality of ballast branch pipes, wherein the ballast distribution pipeline is arranged on the deck and comprises at least one water inlet and a plurality of water outlets; the ballast pump is used for being arranged below the sea surface and communicated with the water inlet of the ballast distribution pipeline through a ballast pump water outlet pipe; the ballast distribution pipeline is communicated with the independent ballast tanks through a plurality of ballast branch pipes to form a plurality of ballast branch pipes; the ballast discharging pipe network comprises a plurality of ballast discharging branch pipes, a ballast discharging distribution pipeline, a ballast discharging pump and a sea discharging pipeline, wherein the ballast discharging distribution pipeline comprises a plurality of water inlets and at least one water outlet, and a plurality of independent ballast tanks are respectively communicated with the ballast discharging distribution pipeline through the plurality of ballast discharging branch pipes to form a plurality of ballast discharging branches; the water inlet of the discharging and loading pump is communicated with the water outlet of the discharging and loading distribution pipeline, and the water outlet of the discharging and loading pump is communicated with the sea discharging pipeline.
Preferably, the ballast pipe network comprises a plurality of hydraulic remote control valves, and each ballast branch is provided with at least one hydraulic remote control valve.
Preferably, the discharge pipe network further comprises a plurality of hydraulic remote control valves, and each discharge branch is provided with at least one hydraulic remote control valve.
Preferably, the ballast distribution pipeline and the plurality of ballast branch pipes are all arranged above the main deck; the bottom plate is provided with a bottom empty chamber, the bottom empty chamber is in a dry environment, and the load discharge pump and the load discharge distribution pipeline are arranged in the bottom empty chamber; the sea drainage pipeline is arranged in the ship body above the bottom plate.
Preferably, the load discharge pump is located at the junction of the central empty chamber and the bottom empty chamber.
Preferably, the ballast distribution pipeline is provided with a ship body seawater supply pipeline butt joint.
Preferably, a cabin sweeping pump is arranged in the bottom empty cabin, a water inlet of the cabin sweeping pump is communicated with a water outlet of the drainage distribution pipeline, and a water outlet of the cabin sweeping pump is communicated with the sea drainage pipeline.
Preferably, the ballast distribution lines and the discharge distribution lines are both looped lines.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a pressure discharge system of a cylindrical floating production oil storage and discharge device.A ballast pump pumps seawater, and conveys the pumped seawater to a ballast distribution pipeline and a ballast branch pipe thereof through a ballast pump outlet pipe, and finally fills the seawater into a plurality of independent ballast tanks; the sea water stored in the independent ballast tank is extracted by the ballast pump, the sea water is discharged out of the ship through the sea discharge pipeline, the active control on the water level of the cylindrical floating production oil storage and unloading device is realized jointly, the flexible filling and discharging of the independent ballast tank can be realized by the ballast pump or the ballast pump and the ballast distribution pipeline or the ballast distribution pipeline, the large-amplitude draft change can be met, the small-range unidirectional ballast requirement can be met, the ballast and the discharge efficiency are higher, the filling or the discharging of the independent ballast tank can be ensured to be in case of failure, other independent ballast tanks can be used simultaneously, and the reliability is higher. The pressure and discharge loading system of the cylinder type floating production oil storage and discharge device disclosed by the invention has a relatively smaller water line surface, can adapt to frequent changes of the water level of the ship body by starting the ballast pipe network and the discharge pipe network to adjust the water level of the ship body, meets the requirement of the cylinder type floating production oil storage and discharge device on balancing the gravity center change in the cargo oil loading and unloading process, improves the reliability and stability of the cylinder type floating production oil storage and discharge device, and enhances the adaptability of the cylinder type floating production oil storage and discharge device to environmental conditions.
Drawings
Fig. 1 is a schematic view of the overall structure of a pressure-discharge-loading system of a cylindrical floating production storage and offloading unit provided in embodiment 1 of the present invention;
fig. 2 is a schematic illustration of the structure of a ballast pipe network within a hull as provided in example 1 of the present invention;
FIG. 3 is a cross-sectional view in vertical section of a ballast pipe network in a hull as provided in example 1 of the present invention;
fig. 4 is a schematic structural diagram of a drainage pipe network in a ship body according to embodiment 1 of the present invention;
fig. 5 is a cross-sectional view of a vertical cross-section of a drainage pipe network in a ship body according to embodiment 1 of the present invention.
Description of reference numerals: 1, a ship body; 2-independent ballast tanks; 3-ballast pump outlet pipe; 4-ballast distribution lines; 5-hydraulic remote control valve; 6-ballast branch pipe; 7-a load discharge pump; 8-a load discharge distribution pipeline; 9-discharging branch pipes; 10-a central empty compartment; 11-a main deck; 12-a base plate; 13-a stripping pump; 14-sea drainage pipeline; 120-bottom empty chamber.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 3, the pressure and load discharging system of the cylinder type floating production, storage and unloading unit is arranged in a hull 1 of the cylinder type floating production, storage and unloading unit, wherein the hull 1 is cylindrical, a main deck 11 and a bottom plate 12 are respectively arranged at the top and the bottom of the hull 1, and the pressure and load discharging system of the cylinder type floating production, storage and unloading unit comprises a plurality of independent ballast tanks 2, a set of ballast pipe networks and a set of load discharging pipe networks.
A central empty cabin 10 is arranged at the center of the interior of the ship body 1, and the top end and the bottom end of the central empty cabin 10 respectively extend to a main deck 11 and a bottom plate 12; the independent ballast tanks 2 are annularly arranged around the inside of the ship body 1, and the upper part and the bottom of each independent ballast tank 2 are respectively provided with a water inlet and a water outlet.
Referring to fig. 2, the ballast pipe network comprises at least one ballast pump, one ballast distribution line 4, a plurality of hydraulic remote valves 5, a plurality of ballast branch pipes 6,
the ballast distribution pipeline 4 is arranged on the main deck 11, is a circular pipeline and is rectangular in shape, and the ballast distribution pipeline 4 comprises two water inlets and a plurality of water outlets.
The ballast pump is arranged below the sea surface and used for directly taking water from the sea, and is communicated with one of the water inlets of the ballast distribution pipeline 4 through a ballast pump water outlet pipe 3. Specifically, the lower end of the ballast pump outlet pipe 3 is butted with the water outlet of the ballast pump through the bottom plate 12, and the upper end of the ballast pump outlet pipe 3 is butted with the water inlet of the ballast distribution pipeline 4 through the main deck 11.
The ballast distribution pipeline 4 is communicated with one independent ballast tank 2 through one ballast branch pipe 6 to form one ballast branch, and the ballast distribution pipeline 4 is respectively communicated with a plurality of independent ballast tanks 2 through a plurality of ballast branch pipes 6 to form a plurality of ballast branch pipes.
In order to control the flow rate of each ballast branch, a hydraulic remote control valve 5 is provided in each ballast branch pipe 6.
When the ballast pump works, the seawater is pumped, and is driven to sequentially pass through the ballast pump and a ballast pump water outlet pipe 3, a ballast distribution pipeline 4 and a ballast branch pipe 6 thereof, and finally is filled into the independent ballast tanks 2.
Referring to fig. 3, the unloading pipe network comprises a plurality of unloading branch pipes 9, an unloading distribution pipeline 8, two unloading pumps 7 and a sea unloading pipeline 14.
The load discharge distribution pipeline 8 is an annular pipeline, the load discharge distribution pipeline 8 is communicated with one independent ballast tank 2 through one load discharge branch pipe 9 to form a load discharge branch, and the load discharge distribution pipeline 8 is respectively communicated with the independent ballast tanks 2 through a plurality of load discharge branch pipes 9 to form a plurality of load discharge branch pipes.
Two water outlets are arranged on the discharge distribution pipeline 8, the water inlets of the two discharge pumps 7 are respectively communicated with one water outlet of the discharge distribution pipeline 8, and the water outlets of the two discharge pumps 7 are communicated with the sea discharge pipeline 14.
Specifically, the sea drainage pipeline 14 is arranged in the hull 1 above the bottom plate 12, and the water outlet of the sea drainage pipeline 14 is higher than the water level of the hull 1.
Specifically, the bottom plate 12 is provided with a bottom empty chamber 120, the bottom empty chamber 120 is a dry environment without water, and the load discharge pump 7 and the load discharge distribution pipeline 8 are arranged in the bottom empty chamber 120. Meanwhile, the load discharge pump 7 is also located at the bottom of the central empty chamber 10, and specifically, the load discharge pump 7 is located at the joint of the central empty chamber 10 and the bottom empty chamber 120.
Wherein, in the ballast pipe network, a ballast distribution pipeline 4 and a plurality of ballast branch pipes 6 are uniformly distributed on a main deck 11 of a ship body 1 and are in a dry type operation environment; in the load-discharging pipe network, the load-discharging pump 7, the load-discharging distribution pipeline 8 and the sweeping cabin pump 13 are uniformly arranged in the bottom empty cabin 120 of the bottom plate 12 and are also in a dry type operation environment.
The ballast water in the independent ballast tanks 2 passes through the discharge branch pipes 9 and the discharge distribution pipelines 8 in sequence, when the discharge pump 7 works, the seawater stored in the independent ballast tanks 2 is extracted, and the seawater is discharged out of the ship body 1 through the seawater discharge pipeline 14.
In order to extract a small amount of ballast water with low liquid level in the independent ballast tank 2 which is not beneficial to the operation of the ballast discharging pump 7, the bottom of the central empty tank 10 is provided with a tank sweeping pump 13, the water inlet of the tank sweeping pump 13 is communicated with the water outlet of the ballast discharging distribution pipeline 8, and the water outlet of the tank sweeping pump 13 is communicated with the sea discharging pipeline 14. The function of the scavenging pump 13 is to drive the ballast water to be discharged out of the ship through the discharge branch pipe 9, the discharge distribution pipeline 8 and the sea discharge pipeline 14 in sequence. The scavenger sump pump 13 may be used for low water emptying in the individual ballast tanks 2.
In order to control the flow of each load discharge branch, each load discharge branch 9 is provided with a hydraulic remote control valve 5.
Besides the independent ballast tanks 2 and the central hollow tank 10, the ship body 1 further comprises a crude oil tank and other functional tanks, the independent ballast tanks 2, the crude oil tank, the other functional tanks and the central hollow tank 10 are arranged in the ship body 1 from outside to inside, and the independent ballast tanks 2 are uniformly distributed outside the ship body 1.
In order to maintain the balance of the hull 1, a plurality of individual ballast tanks 2 are evenly distributed within the hull 1.
When the ballast pump works, the ballast pump takes seawater and drives the seawater to sequentially pass through the ballast pump and a ballast pump outlet water pipe 3, a ballast distribution pipeline 4 and a ballast branch pipe 6 thereof and finally to be filled into a plurality of independent ballast tanks 2; when the load discharging pump 7 works, the load discharging pump 7 pumps seawater stored in the independent ballast tank 2, the seawater sequentially passes through the load discharging branch pipe 9, the load discharging distribution pipeline 8 and the sea discharging pipeline 14 and then is discharged out of the ship body 1, and active control over the water level of the cylindrical floating production oil storage and discharge ship is achieved together, so that the cylindrical floating production oil storage and discharge device meets various working condition requirements of towing, on-site, oil loading and discharging and the like.
The ballast distribution pipeline 4 is provided with a ship body seawater supply pipeline butt joint port, the seawater supply pipeline is provided with a seawater lift pump, the ship body seawater supply pipeline butt joint port of the ballast distribution pipeline 4 is connected with a ship body seawater supply pipeline, the integrated design of a ballast pipe network and the seawater supply pipeline is realized, and the seawater lift pump on the cylindrical floating production oil storage and discharge device is used as a standby pump of the ballast pump.
Preferably, a temporary seawater lift pump outside the hull 1 of the cylindrical floating production, storage and offloading device is selected as a ballast pump; or an emergency seawater lift pump is selected during the installation of the cylindrical floating production, storage and unloading device; or a seawater lift pump is selected when the cylindrical floating production oil storage and discharge device is used for normal production and oil product loading and unloading.
The pressure and discharge loading system of the cylindrical floating production oil storage and discharge device also has the following beneficial effects:
the ballast system and the discharge system are used for filling or pumping ballast water into or out of the plurality of independent ballast tanks 2 independently or simultaneously so as to control draft of the cylindrical floating production oil storage and discharge device to meet the stability requirement;
frequent switching of control points in a ballast pipe network and a discharge load pipe network is reduced, the risk of misoperation is reduced, meanwhile, the feasibility of mutual communication between the pressure discharge load distribution pipelines 8 under necessary working conditions is kept, and the operation flexibility of the pressure discharge load system is improved;
the ballast distribution pipeline 4 and the load discharge distribution pipeline 8 are designed by adopting annular pipelines, the shapes of the annular pipelines can be adjusted according to specific hull structures and equipment arrangement, the ballast pumps and the ballast distribution pipeline 4, the load discharge pumps 7 and the load discharge distribution pipeline 8 can respectively realize filling and discharging of the independent ballast tanks 2, so that large-amplitude draft variation can be met, small-range unidirectional ballast requirements can be met, the ballast and load discharge efficiency is higher, the condition that other independent ballast tanks are available at the same time and the reliability is higher once the filling or discharging of one independent ballast tank 2 fails can be ensured; the hydraulic remote control valves 5 are respectively arranged on each ballast branch and each discharge branch, so that the real-time monitoring and operation of the valve state can be realized, the automation degree of the system is high, and the reliability is higher by adopting a hydraulic driving mode;
the load discharge pump 7 and the load discharge distribution pipeline 8 are arranged on the bottom plate 12 of the ship body 1, so that the use area of a deck of the ship body is saved;
in addition, because the ballast pipe network and the discharge pipe network of the existing cylinder type floating production, oil storage and oil discharge device are both arranged in the ballast tank of the ship body 1, the ballast pipe network, the discharge pipe network and the valves thereof are in the environment of seawater erosion for a long time, and the operation, the maintenance and the overhaul of workers are not facilitated. Aiming at the problem, the ballast pipe network, the ballast discharge pipe network and the hydraulic remote control valve 5 are all arranged in a dry environment, namely, the ballast distribution pipeline 4 and the ballast branch pipe 6 are uniformly distributed on the main deck 11 of the ship body 1, and the ballast discharge pump 7, the ballast discharge distribution pipeline 8 and the scavenging pump 13 are uniformly distributed in the bottom empty chamber 120 of the bottom plate 12 and are all in a dry operation environment, so that the corrosion risk of the wet operation environment of the conventional cylinder type floating production oil storage and discharge device on a ring network and a control valve body is effectively avoided, and the service life of a pressure discharge system is prolonged.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A pressure and load-discharging system of a cylinder type floating production, storage and unloading device is arranged in a ship body (1), the top and the bottom of the ship body (1) are respectively provided with a main deck (11) and a bottom plate (12), and is characterized by comprising a plurality of independent ballast tanks (2), a set of ballast pipe network and a set of load-discharging pipe network,
the hull (1) is cylindrical, a central empty cabin (10) is arranged in the center of the interior of the hull (1), and the top end and the bottom end of the central empty cabin (10) respectively extend to the deck (11) and the bottom plate (12); a plurality of independent ballast tanks (2) are annularly arranged around the inside of the hull (1);
the ballast pipe network comprises at least one ballast pump, a ballast distribution pipeline (4) and a plurality of ballast branch pipes (6), wherein the ballast distribution pipeline (4) is arranged on the deck (11), and the ballast distribution pipeline (4) comprises at least one water inlet and a plurality of water outlets; the ballast pump is used for being arranged below the sea surface and communicated with the water inlet of the ballast distribution pipeline (4) through a ballast pump water outlet pipe (3); the ballast distribution pipeline (4) is communicated with the independent ballast tanks (2) through a plurality of ballast branch pipes (6) to form a plurality of ballast branch lines;
the ballast discharging pipe network comprises a plurality of ballast discharging branch pipes (9), a ballast discharging distribution pipeline (8), a ballast discharging pump (7) and a sea discharging pipeline (14), wherein the ballast discharging distribution pipeline (8) comprises a plurality of water inlets and at least one water outlet, and a plurality of independent ballast tanks (2) are respectively communicated with the ballast discharging distribution pipeline (8) through the plurality of ballast discharging branch pipes (9) to form a plurality of ballast discharging branch pipes; the water inlet of the load discharging pump (7) is communicated with the water outlet of the load discharging distribution pipeline (8), and the water outlet of the load discharging pump (7) is communicated with the sea discharging pipeline (14).
2. The pressure relief system for a floating cylindrical production, storage and offloading unit according to claim 1, wherein said ballast pipe network comprises a plurality of remotely operated hydraulic valves (5), at least one of said remotely operated hydraulic valves (5) being provided in each of said ballast branches.
3. The pressure offloading system of a cylindrical floating production storage and offloading unit of claim 1, further comprising a plurality of hydraulic remote control valves (5), wherein each offloading branch is provided with at least one hydraulic remote control valve (5).
4. The pressure and load discharging system of cylindrical floating production, storage and offloading unit of claim 1,
the ballast distribution pipeline (4) and the plurality of ballast branch pipes (6) are uniformly distributed above the main deck (11);
the bottom plate (12) is provided with a bottom empty chamber (120), the bottom empty chamber (120) is in a dry environment, and the load discharge pump (7) and the load discharge distribution pipeline (8) are arranged in the bottom empty chamber (120);
the sea drainage pipeline (14) is arranged in the ship body (1) above the bottom plate (12).
5. The pressure and load discharging system of cylindrical floating production, storage and offloading unit of claim 4,
the load discharge pump (7) is positioned at the joint of the central empty chamber (10) and the bottom empty chamber (120).
6. The pressure and load discharging system of cylindrical floating production, storage and offloading unit of claim 1,
the ballast distribution pipeline (4) is provided with a ship body seawater supply pipeline butt joint.
7. The pressure-displacement system of the cylinder-type floating production, storage and offloading device according to claim 1, wherein a tank-sweeping pump (13) is disposed in the bottom empty tank (120), a water inlet of the tank-sweeping pump (13) is communicated with a water outlet of the offloading distribution pipeline (8), and a water outlet of the tank-sweeping pump (13) is communicated with the sea-discharging pipeline (14).
8. The pressure and load discharge system for a floating cylindrical production, storage and offloading unit according to claim 1, wherein said ballast distribution piping (4) and said load discharge distribution piping (8) are both annular piping.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110539218.4A CN113120184B (en) | 2021-05-18 | 2021-05-18 | Pressure discharge loading system of cylindrical floating production oil storage and discharge device |
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| CN202110539218.4A CN113120184B (en) | 2021-05-18 | 2021-05-18 | Pressure discharge loading system of cylindrical floating production oil storage and discharge device |
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| CN113120184B CN113120184B (en) | 2022-05-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113371146A (en) * | 2021-07-20 | 2021-09-10 | 中国海洋石油集团有限公司 | Cylindrical FPSO (Floating production storage and offloading) suitable for multi-point mooring system |
| CN114537627A (en) * | 2022-03-14 | 2022-05-27 | 西北工业大学 | Buoyancy adjusting system |
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| JP2013180666A (en) * | 2012-03-02 | 2013-09-12 | Sumitomo Electric Ind Ltd | System and method for treating ballast water for ship |
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| CN113371146B (en) * | 2021-07-20 | 2023-08-22 | 中国海洋石油集团有限公司 | Cylindrical FPSO (floating production storage and offloading) suitable for multi-point mooring system |
| CN114537627A (en) * | 2022-03-14 | 2022-05-27 | 西北工业大学 | Buoyancy adjusting system |
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