阅读说明：本技术 集装箱船及主机空冷器冷却水废热回收系统、废热回收装置 (Container ship and host machine air cooler cooling water waste heat recovery system and waste heat recovery device ) 是由 钱强 段斌 于 2020-12-02 设计创作，主要内容包括：本发明公开了一种集装箱船及其主机空冷器冷却水废热回收系统、废热回收装置,所述系统包括用以对主机空冷器内冷却水进行冷却的冷却水循环管路和用以对发电机组内的缸套水进行升温的缸套水循环管路；主机空冷器内的冷却水从主机空冷器的冷却水出口经冷却水循环管路上的废热回收装置、中央冷却器和低温冷却泵从冷却水入口流回主机空冷器；发电机组内的缸套水从发电机组的缸套水出口经缸套水循环管路上的废热回收装置和预加热器从缸套水入口流回发电机组,或发电机组内的缸套水直接经预加热器加热后回流发电机组。本发明合理利用主机空冷器冷却水中的废热能量,对船舶节能有很高的实用价值。(The invention discloses a container ship and a host air cooler cooling water waste heat recovery system and a waste heat recovery device thereof, wherein the system comprises a cooling water circulation pipeline for cooling water in a host air cooler and a cylinder sleeve water circulation pipeline for heating cylinder sleeve water in a generator set; cooling water in the main machine air cooler flows back to the main machine air cooler from a cooling water inlet through a waste heat recovery device, a central cooler and a low-temperature cooling pump on a cooling water circulation pipeline from a cooling water outlet of the main machine air cooler; the cylinder liner water in the generator set flows back to the generator set from a cylinder liner water outlet of the generator set through a waste heat recovery device and a pre-heater on a cylinder liner water circulation pipeline, or the cylinder liner water in the generator set directly flows back to the generator set after being heated by the pre-heater. The invention reasonably utilizes the waste heat energy in the cooling water of the main air cooler and has high practical value for saving energy of ships.)

1. A system for recovering cooling water and waste heat of a main engine air cooler on a container ship is characterized by comprising a cooling water circulation pipeline for cooling water in the main engine air cooler and a cylinder sleeve water circulation pipeline for heating cylinder sleeve water in a generator set;

cooling water in the main machine air cooler flows back to the main machine air cooler from a cooling water inlet through a waste heat recovery device, a central cooler and a low-temperature cooling pump on a cooling water circulation pipeline from a cooling water outlet of the main machine air cooler;

the cylinder liner water in the generator set flows back to the generator set from a cylinder liner water outlet of the generator set through a waste heat recovery device and a pre-heater on a cylinder liner water circulation pipeline, or the cylinder liner water in the generator set directly flows back to the generator set after being heated by the pre-heater.

2. The host air cooler cooling water waste heat recovery system of claim 1, wherein the cooling water circulation line comprises a first cooling water pipe connected to the cooling water outlet of the host air cooler and the waste heat recovery unit, a second cooling water pipe connected to the waste heat recovery unit and the central cooler, a third cooling water pipe connected to the central cooler and the cryogenic cooling pump, and a fourth cooling water pipe connected to the cryogenic cooling pump and the cooling water inlet of the host air cooler.

3. The host air cooler cooling water waste heat recovery system of claim 2, wherein control valves are mounted on both the first cooling water pipe and the second cooling water pipe.

4. The host air cooler cooling water waste heat recovery system on the container ship as claimed in claim 1, wherein the cylinder liner water circulation pipeline comprises a first cylinder liner water pipe connected with a cylinder liner water outlet of the generator set and the waste heat recovery device, a second cylinder liner water pipe connected with the waste heat recovery device and the pre-heater, and a third cylinder liner water pipe connected with a cylinder liner water inlet of the pre-heater and the generator set, and a fourth cylinder liner water pipe is connected in parallel between the first cylinder liner water pipe and the second cylinder liner water pipe;

and control valves are arranged on the first cylinder sleeve water pipe, the second cylinder sleeve water pipe and the fourth cylinder sleeve water pipe.

5. The system for recovering the cooling water waste heat of the host air cooler on the container ship as claimed in claim 1, 2 or 4, wherein the waste heat recovery device comprises a shell and a coil, the coil is arranged in the shell, the water inlet end and the water outlet end of the coil respectively extend out of the top of the shell, the two sides of the shell are provided with a water inlet valve port and a water outlet valve port, and the cooling water in the host air cooler enters the inner cavity of the shell from the water inlet valve port and exchanges heat with the liner water in the coil.

6. The system of claim 5, wherein the housing comprises a hollow cylinder, a top plate fixed to the top of the cylinder, and a bottom plate fixed to the bottom of the cylinder, and the top plate is provided with circular holes for allowing the water inlet end and the water outlet end of the coil to pass through.

7. The host air cooler cooling water waste heat recovery system on a container ship of claim 5, wherein the coil is of a helical configuration.

8. A container ship, characterized in that the container ship is provided with a host air cooler cooling water waste heat recovery system as claimed in any one of claims 1-7.

9. The waste heat recovery device is characterized by comprising a shell and a coil, wherein the coil is arranged in the shell, a water inlet end and a water outlet end of the coil extend out of the top of the shell respectively, a water inlet valve port and a water outlet valve port are arranged on two sides of the shell, and cooling water in a host air cooler enters an inner cavity of the shell from the water inlet valve port and exchanges heat with cylinder sleeve water in the coil.

10. The system of claim 9, wherein the housing comprises a hollow cylinder, a top plate fixed to the top of the cylinder, and a bottom plate fixed to the bottom of the cylinder, and the top plate is provided with circular holes for allowing the water inlet end and the water outlet end of the coil to pass through.

Technical Field

The invention relates to the technical field of ship construction, in particular to a container ship, a cooling water waste heat recovery system of a main engine air cooler of the container ship and a waste heat recovery device of the container ship.

Background

Large container ships have a large cargo capacity and a high speed, and therefore have a large main engine power compared with other types of ships. When the main engine operates, a large amount of air is consumed, the air (scavenging air) is compressed by the supercharger and then is sent to the air cooler, and the air cooler is cooled by low-temperature fresh water and then is sent to the air cylinder to participate in combustion.

The fresh cooling water for cooling the scavenging air has a large amount of heat to be taken away, so that the flow rate of the fresh cooling water is large, and the water temperature is high when the fresh cooling water flows out of the air cooler, particularly the temperature of the fresh cooling water flowing out of the air cooler of the WinGD type main machine exceeds 60 ℃, and the fresh cooling water returns to the central cooler for reuse after flowing out of the air cooler. The heat energy contained in this portion of the chilled fresh water, in addition to not being utilized, requires a certain amount of seawater for cooling.

Meanwhile, a large container ship is generally provided with 4-6 generator sets, and in the normal navigation process, the generator sets serving as standby generator sets need to keep continuous cylinder liner water preheating so as to be immediately put into use when needed. Therefore, the cylinder liner water preheater of the generator set needs continuously heated cylinder liner water to ensure the safety of the ship.

At present, cooling fresh water for cooling scavenging air flows out of an air cooler, enters a central cooler for cooling, and is pressurized by a low-temperature fresh water pump and then is used for cooling a main machine again. In this way, not only is the heat energy in the low-temperature water not utilized, but also a certain amount of seawater is consumed to cool the cooling fresh water. Meanwhile, for the standby generator set, the cylinder liner water preheater usually heats the cylinder liner water by using the electric heater, so as to heat the cylinder liner, and the cylinder liner of the standby generator set also needs to consume a large amount of electric energy, so that a large amount of resource waste is caused.

Disclosure of Invention

In view of the above, the invention provides a container ship and a system and a device for recovering cooling water and waste heat of a main air cooler of the container ship.

A system for recovering cooling water and waste heat of a main engine air cooler on a container ship comprises a cooling water circulation pipeline for cooling water in the main engine air cooler and a cylinder liner water circulation pipeline for heating cylinder liner water in a generator set;

cooling water in the main machine air cooler flows back to the main machine air cooler from a cooling water inlet through a waste heat recovery device, a central cooler and a low-temperature cooling pump on a cooling water circulation pipeline from a cooling water outlet of the main machine air cooler;

the cylinder liner water in the generator set flows back to the generator set from a cylinder liner water outlet of the generator set through a waste heat recovery device and a pre-heater on a cylinder liner water circulation pipeline, or the cylinder liner water in the generator set directly flows back to the generator set after being heated by the pre-heater.

Preferably, the cooling water circulation line includes a first cooling water pipe connected to the cooling water outlet of the main unit air cooler and the waste heat recovery device, a second cooling water pipe connected to the waste heat recovery device and the central cooler, a third cooling water pipe connected to the central cooler and the low temperature cooling pump, and a fourth cooling water pipe connected to the low temperature cooling pump and the cooling water inlet of the main unit air cooler,

preferably, the first cooling water pipe and the second cooling water pipe are both provided with control valves.

Preferably, the cylinder sleeve water circulation pipeline comprises a first cylinder sleeve water pipe connected with a cylinder sleeve water outlet of the generator set and the waste heat recovery device, a second cylinder sleeve water pipe connected with the waste heat recovery device and the pre-heater, and a third cylinder sleeve water pipe connected with the pre-heater and a cylinder sleeve water inlet of the generator set, and a fourth cylinder sleeve water pipe is connected in parallel between the first cylinder sleeve water pipe and the second cylinder sleeve water pipe;

and control valves are arranged on the first cylinder sleeve water pipe, the second cylinder sleeve water pipe and the fourth cylinder sleeve water pipe.

Preferably, the waste heat recovery device comprises a shell and a coil pipe, the coil pipe is arranged in the shell, a water inlet end and a water outlet end of the coil pipe extend out of the top of the shell respectively, a water inlet valve port and a water outlet valve port are arranged on two sides of the shell, and cooling water in the main air cooler enters an inner cavity of the shell from the water inlet valve port and exchanges heat with cylinder liner water in the coil pipe.

Preferably, the shell comprises a hollow cylinder, a top plate fixed at the top of the cylinder and a bottom plate fixed at the bottom of the cylinder, and the top plate is provided with round holes for the water inlet end and the water outlet end of the coil pipe to pass through.

Preferably, the coil is of helical construction.

A container ship is provided with a host machine air cooler cooling water waste heat recovery system.

The coil is arranged in the shell, a water inlet end and a water outlet end of the coil respectively extend out of the top of the shell, a water inlet valve port and a water outlet valve port are arranged on two sides of the shell, and cooling water in a host air cooler enters an inner cavity of the shell from the water inlet valve port and exchanges heat with cylinder sleeve water in the coil.

Preferably, the shell comprises a hollow cylinder, a top plate fixed at the top of the cylinder and a bottom plate fixed at the bottom of the cylinder, and the top plate is provided with round holes for the water inlet end and the water outlet end of the coil pipe to pass through.

The invention has the beneficial effects that:

1. when a large container ship sails normally, the system for recycling the waste heat of the cooling water of the main air cooler can continuously heat the cylinder sleeve water of the standby generator set by using the heat energy in the cooling fresh water with higher temperature flowing out of the main air cooler, thereby not only effectively utilizing the waste heat energy in the cooling water discharged by the main air cooler, but also reducing the use of heating electric energy in the generator preheating system to achieve the aim of saving energy of the ship, and simultaneously reducing the introduced seawater to cool the cooling fresh water with high temperature flowing out of the main air cooler.

2. In the cooling water circulation pipeline of the air cooler of the main engine of the large container ship, the waste heat recovery device is arranged on the cooling water outlet pipeline of the air cooler, and the waste heat energy in the cooling water of the main engine air cooler is reasonably utilized by the waste heat recovery device, so that the energy-saving device has high practical value for ship energy conservation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a host air cooler cooling water waste heat recovery system.

Fig. 2 is a schematic structural view of the exhaust heat recovery apparatus.

The reference numerals in the figures have the meaning:

the system comprises a main machine air cooler 1, a generator set 2, a preheater 3, a cooling water outlet 4, a cooling water inlet 5, a waste heat recovery device 6, a central cooler 7, a low-temperature cooling pump 8, a first cooling water pipe 9, a second cooling water pipe 10, a third cooling water pipe 11, a fourth cooling water pipe 12, a cylinder liner water outlet 13, a cylinder liner water inlet 14, a first cylinder liner water pipe 15, a second cylinder liner water pipe 16, a third cylinder liner water pipe 17, a fourth cylinder liner water pipe 18, a shell 19, a coil pipe 20, a water inlet valve port 21 and a water outlet valve port 22.

Detailed Description

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected" and "fixed" are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

When the large container ship is in normal navigation, low-temperature cooling water needs to be introduced into the main air cooler 1 to reduce the temperature of scavenging air in the air cooler. When the low-temperature cooling water absorbs the heat in the scavenging air and cools the scavenging air, the cooling water with higher temperature (usually the cooling water with temperature over 60 ℃) is discharged from the air cooler. The cooling water with higher temperature enters the central cooler for cooling, and then is pressurized by the low-temperature cooling fresh water pump and sent into the air cooler for recycling.

Meanwhile, when the ship normally sails, the standby generator set 2 on the container ship needs to be kept in a standby state all the time, so that the standby generator set 2 needs to be continuously heated by using cylinder liner water. When the standby generator set 2 is preheated, the electric heater in the preheater 3 is usually used for heating cylinder liner water, and then the heated cylinder liner water is sent to the standby generator set 2 to heat the cylinder liner of the diesel engine.

The cooling water discharged from the main air cooler 1 contains a large amount of heat, the standby generator set 2 just needs heat for heating the cylinder liner water, and in order to fully utilize waste heat in the cooling water of the main air cooler and reduce electric energy consumed by the pre-heater, the waste heat recovery system and the waste heat recovery device for the cooling water of the main air cooler are designed.

When a large container ship normally sails, the cooling water waste heat recovery system of the main engine air cooler can continuously heat the cylinder jacket water of the standby generator set 2 by using the heat energy in the cooling fresh water with higher temperature flowing out of the main engine air cooler 1, so that the purposes of reducing the use of heating electric energy in the generator preheating system and saving the energy of the ship are achieved, and the cooling fresh water with high temperature flowing out of the main engine air cooler can be cooled by reducing the introduced seawater.

The system for recovering the cooling water waste heat of the main machine air cooler on the container ship comprises a cooling water circulation pipeline for cooling the cooling water in the main machine air cooler 1 and a cylinder sleeve water circulation pipeline for heating the cylinder sleeve water in the generator set 2.

The cooling water in the main air cooler 1 flows back to the main air cooler 1 from a cooling water inlet 5 through a waste heat recovery device 6, a central cooler 7 and a low-temperature cooling pump 8 on a cooling water circulation pipeline from a cooling water outlet 4 of the main air cooler 1.

The cooling water circulation pipeline comprises a first cooling water pipe 9 connected with the cooling water outlet 4 of the main air cooler and the waste heat recovery device 6, a second cooling water pipe 10 connected with the waste heat recovery device 6 and the central cooler 7, a third cooling water pipe 11 connected with the central cooler 7 and the low-temperature cooling pump 8, and a fourth cooling water pipe 12 connected with the low-temperature cooling pump 8 and the cooling water inlet 5 of the main air cooler.

Control valves are mounted on the first cooling water pipe 9 and the second cooling water pipe 10.

The cylinder liner water in the generator set 2 flows back to the generator set 2 from a cylinder liner water outlet 13 of the generator set through the waste heat recovery device 6 and the pre-heater 3 on the cylinder liner water circulation pipeline, or the cylinder liner water in the generator set 2 directly flows back to the generator set 2 after being heated by the pre-heater 3.

The cylinder sleeve water circulation pipeline comprises a first cylinder sleeve water pipe 15 connected with a cylinder sleeve water outlet 13 of the generator set and the waste heat recovery device 6, a second cylinder sleeve water pipe 16 connected with the waste heat recovery device 6 and the pre-heater 3, and a third cylinder sleeve water pipe 17 connected with the pre-heater 3 and a cylinder sleeve water inlet 14 of the generator set, wherein a fourth cylinder sleeve water pipe 18 is connected in parallel between the first cylinder sleeve water pipe 15 and the second cylinder sleeve water pipe 16;

and control valves are respectively arranged on the first cylinder sleeve water pipe 15, the second cylinder sleeve water pipe 16 and the fourth cylinder sleeve water pipe 18.

The waste heat recovery device 6 comprises a shell 19 and a coil pipe 20, the coil pipe 20 is arranged in the shell 19, a water inlet end and a water outlet end of the coil pipe 20 extend out of the top of the shell 19 respectively, a first cylinder sleeve water pipe 15 is connected to the water inlet end of the coil pipe 20, a second cylinder sleeve water pipe 16 is connected to the water outlet end of the coil pipe 20, and cylinder sleeve water in the standby generator set 2 is conveyed into the coil pipe 20 from the first cylinder sleeve water pipe 15.

And a water inlet valve port 21 and a water outlet valve port 22 are arranged on two sides of the shell 19, the first cooling water pipe 9 is connected to the water inlet valve port 21, and the second cooling water pipe 10 is connected to the water outlet valve port 22. The cooling water in the main machine air cooler 1 enters the inner cavity of the shell from the water inlet valve port 21 and exchanges heat with the cylinder liner water in the coil pipe 20. In this embodiment, the coil 20 has a spiral structure.

The shell 19 comprises a hollow cylinder, a top plate fixed at the top of the cylinder and a bottom plate fixed at the bottom of the cylinder, wherein the top plate is provided with round holes for the water inlet end and the water outlet end of the coil pipe to pass through.

For ease of manufacture and installation in use, in this embodiment, the top and bottom plates are designed as circular plates of equal size, and the top, bottom and cylindrical bodies together define a housing having a cylindrical interior in which the coil 20 is disposed with its water inlet and outlet ends extending from the top of the housing 19, respectively.

When the ship sails normally, the main engine operates normally, the control valve k1 on the first cooling water pipe 9, the control valve k2 on the second cooling water pipe 10, the control valve k3 on the first cylinder liner water pipe 9 and the control valve k4 on the second cylinder liner water pipe 16 are opened, cooling water with higher temperature flowing out of the cooling water outlet of the main engine air cooler 1 is sent into the shell inner cavity of the waste heat recovery device 6 from the first cooling water pipe 9, and meanwhile, cylinder liner water with lower temperature in the standby generator set 2 flows into the coil 20 of the waste heat recovery device 6 from the cylinder liner water outlet through the first cylinder liner water pipe 15.

The cooling water with higher temperature in the inner cavity of the shell of the waste heat recovery device 6 exchanges heat with the liner water with lower temperature in the coil 20 thereof. The heated cylinder jacket water flows from the second cylinder jacket water pipe 16 into the preheater 3 and then into the standby generator set 2. The primarily cooled cooling water flows from the second cooling water pipe 10 into the central cooler 7 and the low-temperature cooling pump 8 to be cooled again, and then flows back to the main unit air cooler 1.

When the main engine stops running, the cooling water with higher temperature flowing out of the main engine air cooler 1 cannot heat the cylinder sleeve water in the standby generator set 2. At this time, the control valve k3 on the first cylinder jacket water pipe 15 and the control valve k4 on the second cylinder jacket water pipe 16 are closed, the control valve k5 on the fourth cylinder jacket water pipe 18 is opened, and the cylinder jacket water with a lower temperature in the standby generator set 2 flows into the pre-heater 3 from the cylinder jacket water outlet through the first cylinder jacket water pipe 15, the fourth cylinder jacket water pipe 18 and the second cylinder jacket water pipe 16, is heated by the pre-heater 3, and then enters the standby generator set 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.