CN216611486U

CN216611486U - Pipeline system for reducing energy consumption of ship seawater cooling system by utilizing ballast water

Info

Publication number: CN216611486U
Application number: CN202122959685.0U
Authority: CN
Inventors: 许浩; 纪新民; 李邦华; 黄致谦; 郝子卓; 卢承谦; 王鑫浩; 王科宇
Original assignee: Shanghai Merchant Ship Design and Research Institute of CSSC No 604 Research Institute
Current assignee: Shanghai Merchant Ship Design and Research Institute of CSSC No 604 Research Institute
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-27
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a pipeline system for reducing energy consumption of a ship seawater cooling system by using ballast water, which comprises a cooling seawater pipeline, a ballast pipeline, a row of ballast pipelines and a central fresh water cooler, wherein the cooling seawater pipeline is connected with a water inlet of the central fresh water cooler; the central fresh water cooler is connected to the cooling seawater pipeline; the ballast pipeline is connected to the cooling seawater pipeline at two ends of the central fresh water cooler; the pressure discharge pipeline is connected to the cooling seawater pipeline at two ends of the central fresh water cooler. According to the pipeline system for reducing the energy consumption of the ship seawater cooling system by using the ballast water, the ballast water can be ballasted or pressure-relief, and meanwhile, the cooling function which is not utilized before the ballast water is exerted, so that the use working condition of a seawater cooling pump is reduced, the use load of the seawater cooling pump is reduced, and the reduction of the ship energy consumption is realized; a set of seawater cooling pump set can be omitted, and the initial investment of the ship can be correspondingly reduced.

Description

Pipeline system for reducing energy consumption of ship seawater cooling system by utilizing ballast water

Technical Field

The utility model relates to the field of ship pipeline systems, in particular to a pipeline system for reducing energy consumption of a ship seawater cooling system by using ballast water.

Background

The seawater cooling system is one of the systems with higher energy consumption on the ship. The actual demand for cooling seawater on the ship also varies continuously due to the fact that the cooling demand for equipment on the ship can vary continuously with the actual use conditions of the equipment on the ship and the actual temperature of the outside seawater. At present, a common and mature method is to adopt a seawater frequency conversion system, and adjust the flow change of a cooling seawater pump through the frequency conversion system, so as to reduce energy consumption. However, the seawater frequency conversion system will bring increased cost, mainly including: the seawater pump needs to adopt a variable frequency pump, a plurality of sensors, a variable frequency control module and the like. The added cost often makes the shipowner prohibitive.

The floating state of the ship is usually adjusted by pumping and discharging ballast water and adjusting the ballast water in the ballast tank.

Ballast is carried out on the ship, conventionally, extra-ship seawater is pumped from a seawater main pipe through a ballast pump on the ship, and the seawater is pumped into a ballast tank through a ballast pipeline;

ballast is discharged from a ship by directly discharging seawater from a ballast tank to the outside of the ship through a ballast pipeline by a ballast pump on the ship.

The ship seawater cooling system is characterized in that low-temperature seawater outside a ship is pumped from a seawater main pipe through a seawater cooling pump on the ship, the seawater is refuted to a central fresh water cooler through a cooling pipeline, the low-temperature seawater is changed into high-temperature seawater after heat exchange is carried out between the low-temperature seawater and high-temperature fresh water on the ship at the cooler, and then the high-temperature seawater is discharged outside the ship.

The analysis shows that the used media of the ship ballast system and the ship seawater cooling system are seawater, and the seawater directly enters the ballast tank from the outside of the ship without heat exchange during pressurization and loading; when ballast is discharged, the seawater is directly discharged from the ballast tank to the outside of the ship without heat exchange.

In the prior art, a ballast system and a cooling seawater system are usually independent, pipelines of the ballast system and the cooling seawater system are not interfered with each other, and the work of the respective systems is realized through a valve switch. The energy consumption of the seawater cooling system is mainly reduced by adjusting the flow change of the cooling seawater pump through the frequency conversion system, so that the energy consumption is reduced. However, the seawater frequency conversion system will bring increased cost, mainly including: the seawater pump needs to adopt a variable frequency pump, a plurality of sensors, a variable frequency control module and the like. In the current design of a ballast water system and a seawater cooling system, the cooling function of ballast water is not utilized yet.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a pipeline system for reducing the energy consumption of a ship seawater cooling system by using ballast water, so that the ballast water (low-temperature seawater) can play a cooling function which is not utilized before the ballast water is ballasted or pressure-relief, thereby reducing the use working condition of a seawater cooling pump, reducing the use load of the seawater cooling pump and reducing the energy consumption of the ship; a set of seawater cooling pump set can be omitted, and the initial investment of the ship can be correspondingly reduced.

In order to achieve the above object, the present invention provides a pipeline system for reducing energy consumption of a marine water cooling system by using ballast water, comprising a cooling seawater pipeline, a ballast pipeline, a row of ballast pipelines and a central fresh water cooler; the central fresh water cooler is connected to the cooling seawater pipeline; the ballast pipeline is connected to the cooling seawater pipeline at two ends of the central fresh water cooler; the pressure discharge pipeline is connected to the cooling seawater pipeline at two ends of the central fresh water cooler.

Preferably, the cooling sea water pipeline comprises a first cooling sea water pipe and a second cooling sea water pipe; the first end of the first cooling seawater pipe is connected with a seawater main pipe, the second end of the first cooling seawater pipe is connected with the central fresh water cooler, a cooling seawater pump group is arranged on the first cooling seawater pipe, and a first valve and a second valve are respectively arranged on the first cooling seawater pipe on two sides of the cooling seawater pump group; the first end of the second cooling seawater pipe is connected with the central fresh water cooler, the second end of the second cooling seawater pipe is communicated with the outside of a ship body, a third valve is installed on the second cooling seawater pipe, and a fourth valve is installed at the second end of the second cooling seawater pipe.

Preferably, the ballast lines include a first ballast line and a second ballast line; the first end of the first ballast pipeline is connected with the seawater main pipe, the second end of the first ballast pipeline is connected with the first cooling seawater pipe, a first ballast pump group is installed on the first ballast pipeline, and a fifth valve and a sixth valve are respectively installed on the first ballast pipeline on two sides of the first ballast pump group; the first end of the second ballast pipeline is connected with the second cooling seawater pipe, the second end of the second ballast pipeline is connected with a ballast tank or a ballast water treatment device, and a seventh valve is installed on the second ballast pipeline.

Preferably, the ballast line bank comprises a first ballast line bank and a second ballast line bank; the first end of the first row of ballast pipelines is connected with the ballast tank, the second end of the first row of ballast pipelines is connected with the first cooling seawater pipe, the first row of ballast pipelines is provided with a second ballast pump group, and the first row of ballast pipelines between the second ballast pump group and the central fresh water cooler are provided with an eighth valve; the first end of the second pressure discharge load pipeline is connected with the second cooling seawater pipe, the second end of the second pressure discharge load pipeline is communicated with the outside of the ship body, a ninth valve is installed on the second pressure discharge load pipeline, and a tenth valve is installed at the second end of the second pressure discharge load pipeline.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

the ballast pipeline and the pressure discharge pipeline are connected to the seawater cooling pipeline at two ends of the central fresh water cooler, so that the cooling function of ballast water is utilized, an additional variable frequency control system is not needed, and the reduction of the energy consumption of the ship seawater cooling system can be realized only by adjusting the valves and the pipelines, thereby realizing the reduction of the initial investment of ships and the energy consumption of ships.

Drawings

Fig. 1 is a schematic structural diagram of a piping system for reducing energy consumption of a marine water cooling system by using ballast water according to an embodiment of the present invention.

Detailed Description

The following description of the preferred embodiment of the present invention, with reference to the accompanying drawings and fig. 1, will provide a better understanding of the function and features of the utility model.

Referring to fig. 1, a pipeline system for reducing energy consumption of a marine water cooling system by using ballast water according to an embodiment of the present invention includes a cooling seawater pipeline 1, a ballast pipeline 2, a row of ballast pipelines 3, and a central fresh water cooler 4; the central fresh water cooler 4 is connected to the cooling seawater pipeline 1; the ballast pipeline 2 is connected to the cooling seawater pipeline 1 at the two ends of the central fresh water cooler 4; the ballast discharge pipeline 3 is connected to the cooling seawater pipeline 1 at both ends of the central fresh water cooler 4.

The cooling seawater pipeline 1 comprises a first cooling seawater pipe 11 and a second cooling seawater pipe 12; the first end of the first cooling seawater pipe 11 is connected with a seawater main pipe 5, the second end of the first cooling seawater pipe 11 is connected with the central fresh water cooler 4, a cooling seawater pump set 13 is installed on the first cooling seawater pipe 11, and a first valve 14 and a second valve 15 are respectively installed on the first cooling seawater pipe 11 at two sides of the cooling seawater pump set 13; the first end of the second cooling sea water pipe 12 is connected with the central fresh water cooler 4, the second end of the second cooling sea water pipe 12 is communicated with the outside of a ship body, the second cooling sea water pipe 12 is provided with a third valve 16, and the second end of the second cooling sea water pipe 12 is provided with a fourth valve 17.

The ballast line 2 comprises a first ballast line 21 and a second ballast line 22; the first end of the first ballast pipeline 21 is connected with the seawater main pipe 5, the second end of the first ballast pipeline 21 is connected with the first cooling seawater pipe 11, a first ballast pump group 23 is arranged on the first ballast pipeline 21, and a fifth valve 24 and a sixth valve 25 are respectively arranged on the first ballast pipeline 21 at two sides of the first ballast pump group 23; the first end of the second ballast line 22 is connected to the second cooling seawater pipe 12, the second end of the second ballast line 22 is connected to a ballast tank 6 or a ballast water treatment device 7, and a seventh valve 26 is installed on the second ballast line 22.

The ballast discharge line 3 comprises a first ballast discharge line 31 and a second ballast discharge line 32; the first end of the first row of ballast pipelines 31 is connected with the ballast tank 6, the second end of the first row of ballast pipelines 31 is connected with the first cooling seawater pipe 11, a second ballast pump group 33 is arranged on the first row of ballast pipelines 31, and an eighth valve 34 is arranged on the first row of ballast pipelines 31 between the second ballast pump group 33 and the central fresh water cooler 4; the first end of the second pressure-relief pipeline 32 is connected with the second cooling seawater pipe 12, the second end of the second pressure-relief pipeline 32 is communicated with the outside of the ship body, a ninth valve 35 is installed on the second pressure-relief pipeline 32, and a tenth valve 36 is installed at the second end of the second pressure-relief pipeline 32.

According to the pipeline system for reducing the energy consumption of the ship seawater cooling system by using the ballast water, under the working condition of pressurization, the ballast water firstly passes through the central fresh water cooler 4 before entering the ballast water treatment device 7 or the ballast tank 6, and then enters the ballast water treatment device 7 or the ballast tank 6 after heat exchange is carried out between the central fresh water cooler 4 and high-temperature fresh water on a ship. Compared with the system before optimization, the ballast water enters the ship from the outside of the ship to realize the adjustment of the ship floating state, but a heat exchange process is added in the middle, so that the cooling function of the ballast water is utilized, and the requirement of cooling seawater is relieved. The discharge capacity of the ballast pump is usually not small, and in most cases, the release of the cooling function of the ballast water can basically avoid the use of a cooling seawater pump, so that the reduction of the energy consumption of the ship is realized.

The optimized pressure load discharging working condition is similar to the pressure load discharging working condition.

It can be seen that the optimized scheme can realize the energy-saving function only by adjusting the valve and the pipeline without an additional variable frequency control system.

While the present invention has been described in detail and with reference to the embodiments thereof as shown in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the utility model is to be determined by the appended claims.

Claims

1. A pipeline system for reducing the energy consumption of a ship seawater cooling system by using ballast water is characterized by comprising a cooling seawater pipeline, a ballast pipeline, a row of ballast pipelines and a central fresh water cooler; the central fresh water cooler is connected to the cooling seawater pipeline; the ballast pipeline is connected to the cooling seawater pipeline at two ends of the central fresh water cooler; the pressure discharge pipeline is connected to the cooling seawater pipeline at two ends of the central fresh water cooler.

2. The piping system for achieving energy consumption reduction of a marine water cooling system using ballast water according to claim 1, wherein the cooling seawater piping comprises a first cooling seawater pipe and a second cooling seawater pipe; the first end of the first cooling seawater pipe is connected with a seawater main pipe, the second end of the first cooling seawater pipe is connected with the central fresh water cooler, a cooling seawater pump group is arranged on the first cooling seawater pipe, and a first valve and a second valve are respectively arranged on the first cooling seawater pipe on two sides of the cooling seawater pump group; the first end of the second cooling seawater pipe is connected with the central fresh water cooler, the second end of the second cooling seawater pipe is communicated with the outside of a ship body, a third valve is installed on the second cooling seawater pipe, and a fourth valve is installed at the second end of the second cooling seawater pipe.

3. The piping system for achieving energy consumption reduction of a marine water cooling system using ballast water according to claim 2, wherein the ballast piping comprises a first ballast piping and a second ballast piping; the first end of the first ballast pipeline is connected with the seawater main pipe, the second end of the first ballast pipeline is connected with the first cooling seawater pipe, a first ballast pump group is installed on the first ballast pipeline, and a fifth valve and a sixth valve are respectively installed on the first ballast pipeline on two sides of the first ballast pump group; the first end of the second ballast pipeline is connected with the second cooling seawater pipe, the second end of the second ballast pipeline is connected with a ballast tank or a ballast water treatment device, and a seventh valve is installed on the second ballast pipeline.

4. The piping system for reducing the energy consumption of a marine water cooling system using ballast water according to claim 3, wherein the ballast discharge piping comprises a first ballast discharge piping and a second ballast discharge piping; the first end of the first row of ballast pipelines is connected with the ballast tank, the second end of the first row of ballast pipelines is connected with the first cooling seawater pipe, the first row of ballast pipelines is provided with a second ballast pump group, and the first row of ballast pipelines between the second ballast pump group and the central fresh water cooler are provided with an eighth valve; the first end of second row pressure load pipeline is connected second cooling sea water pipe, the second end of second row pressure load pipeline with the outside intercommunication of hull, install a ninth valve on the second row pressure load pipeline, a tenth valve is installed to the second end of second row pressure load pipeline.