Green PCTC air conditioner refrigeration fresh water cooling system and ship

Abstract

The invention provides a green PCTC air conditioner refrigeration fresh water cooling system and a ship, and relates to the field of ship construction. A low-temperature cooling fresh water pump is arranged in a cabin and used for providing cooling water for the system; the central cooler is connected with the low-temperature cooling fresh water pump and is used for reducing the temperature of backflow cooling water; the engine room water equipment is arranged in an engine room and directly obtains cooling water through the low-temperature cooling fresh water pump; the fresh water booster pump is arranged in a cabin, is connected with a water outlet pipeline of the low-temperature cooling fresh water pump and is used for increasing the pressure of cooling water; the residential area equipment is arranged in the residential area and obtains the pressurized cooling water through the fresh water booster pump; the system is simple in structure and easy to implement, the problem that the cooling water pressure of refrigeration equipment in the residential area is insufficient is effectively solved, the comfort of the residential area is improved, and the system compatibility and the green energy-saving effect are good.

Description

Technical Field

[0001] The present invention belongs to the technical field of shipbuilding, and particularly relates to a green PCTC air-conditioning, refrigeration and fresh water cooling system and a ship. Background Art

[0002] In ship design, especially for large ships such as multi-purpose vehicle carriers (PCTCs), the distance between the engine room and the living area is usually far and there is a large height difference. In traditional ships, the engine room cooling water system is mainly used to meet the cooling requirements of equipment in the engine room, such as cabinet air conditioners in the engine room centralized control room, cabinet air conditioners in the dockworker's office, and cabinet air conditioners in the machine repair shop.

[0003] However, in practical applications, the pressure provided by the engine room cooling water pump can only meet the requirements of the water-using equipment in the engine room. Since the living area is usually far from the engine room and there is a large height difference, the pressure of the conventional engine room cooling water pump cannot meet the usage requirements of the refrigeration equipment in the living area. This not only affects the normal operation of the air-conditioning system, refrigeration system and cabinet air conditioners in the living area, but also reduces the overall energy utilization efficiency of the ship.

[0004] Currently, the solutions on the market mainly involve setting up an independent cooling system for the living area separately. This method not only increases the system complexity, but also raises the shipbuilding and maintenance costs. Therefore, there is an urgent need for a technical solution that can effectively solve the problem of cooling water supply between the living area and the engine room. Summary of the Invention

[0005] The first aspect of the present invention provides a green PCTC air-conditioning, refrigeration and fresh water cooling system, including:

[0006] A low-temperature cooling fresh water pump, arranged in the engine room, for providing cooling water for the system;

[0007] A central cooler, connected to the low-temperature cooling fresh water pump, for reducing the temperature of the returned cooling water;

[0008] Engine room water-using equipment, arranged in the engine room, directly obtaining cooling water through the low-temperature cooling fresh water pump;

[0009] A fresh water booster pump, arranged in the engine room, connected to the outlet pipeline of the low-temperature cooling fresh water pump, for increasing the pressure of the cooling water;

[0010] And living area equipment, arranged in the living area, obtaining the pressurized cooling water through the fresh water booster pump.

[0011] Preferably, there is a height difference and a distance difference between the living area and the engine room, the height difference between the living area and the engine room is 20 - 30 meters, and the distance difference is 70 - 90 meters.

[0012] Preferably, the residential area equipment includes air conditioning equipment, refrigeration equipment and floor-standing air conditioners.

[0013] Preferably, the water-using equipment in the engine room includes floor-standing air conditioners in the dockworker's office, the engine room centralized control room and the machine repair workshop.

[0014] Preferably, it further includes:

[0015] A cooling water shore connection outlet for outputting the cooling water on the ship to the shore when in the dock;

[0016] A cooling water shore connection inlet for introducing the cooling water on the shore for use on the ship when in the dock.

[0017] Preferably, the fresh water booster pump is two booster pumps arranged in parallel.

[0018] Preferably, the system further includes a degassing cylinder,

[0019] The degassing cylinder is connected to the cooling water circulation system for discharging the gas inside the system; the degassing cylinder is arranged at the high point of the system and has valve parts for discharging the gas in the system.

[0020] Preferably, it further includes a low-temperature fresh water expansion tank, which is arranged at one end of the low-temperature cooling fresh water pump and is used to receive the excess low-temperature fresh water in the system.

[0021] Preferably, there are at least 2 low-temperature cooling fresh water pumps.

[0022] The second aspect of the present invention provides a ship, on which the air-conditioning, refrigeration and fresh water cooling system described in the first aspect is provided.

[0023] The beneficial effects brought by the present invention are as follows:

[0024] It can be seen from the above solution that the embodiment of the present invention provides a kind of. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall layout schematic diagram;

[0026] Figure 2 is the schematic diagram of the principle of the green PCTC air-conditioning, refrigeration and fresh water cooling system;

[0027] Figure 3 is the schematic diagram of the setting position of the booster pump and the flow direction of the cooling water to the residential area;

[0028] Figure 4 is the schematic diagram of the degassing cylinder structure.

[0029] In the figure, 1000 is the green PCTC; 2000 is the residential area; 3000 is the engine room; 100 is the low-temperature cooling fresh water pump; 101 is the first low-temperature cooling fresh water pump; 102 is the second low-temperature cooling fresh water pump; 300 is the degassing cylinder; 200 is the central cooler; 400 is the equipment for the engine room; 401 is the cabinet air conditioner for the dockworker's office; 402 is the cabinet air conditioner for the engine room control room; 403 is the cabinet air conditioner for the machine repair shop; 404 is the cabinet air conditioner for the frequency converter room; 500 is the fresh water booster pump; 600 is the equipment for the residential area; 601 is the air conditioning equipment; 602 is the refrigeration equipment; 603 is the cabinet air conditioner for the kitchen; 700 is the outlet of the cooling water shore connection; 800 is the inlet of the cooling water shore connection. Detailed implementation mode

[0030] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] The first aspect of the present invention provides a green PCTC air-conditioning, refrigeration, and fresh water cooling system. As Figure 1 shown, it includes the green PCTC 1000, as well as the specific locations of the residential area 2000 and the engine room 3000 on the green PCTC 1000. The composition and working principle of the green PCTC air-conditioning, refrigeration, and fresh water cooling system are as follows:

[0033] As Figure 2 shown, the system mainly consists of two parts: the engine room cooling water circulation loop and the residential area cooling water supply loop, and is connected by a fresh water booster pump. In addition, the system is also provided with a shore-based cooling water connection for using shore-based cooling water during docking in the shipyard.

[0034] Engine room cooling water circulation loop:

[0035] Two low-temperature cooling fresh water pumps QB020 and QB023 are arranged in parallel to improve the reliability of the system, and one of them is used as a standby pump. The low-temperature cooling fresh water pump sucks in low-temperature fresh water from the low-temperature fresh water cooler and transports it to various water-using equipment in the engine room.

[0036] The equipment for the engine room includes: the cabinet air conditioner QB048 for the dockworker's office, the cabinet air conditioner QB050 for the engine room control room, the cabinet air conditioner QB054 for the machine repair shop, and the cabinet air conditioner QB056 for the frequency converter room. The cooling water flows through these equipment, takes away the heat, and then returns to the central cooler.

[0037] Two central coolers 200 are arranged in parallel to reduce the temperature of the cooling water and ensure the stable operation of the system.

[0038] The degassing cylinder QB112 is arranged at the highest point of the cooling water circulation circuit in the engine room to discharge the gas accumulated in the system and improve the system efficiency. As Figure 4 shown, the structural schematic diagram of the degassing cylinder 300 is shown. By opening the valve QB112 at the top of the degassing cylinder, the gas accumulated inside the system can be discharged.

[0039] The low-temperature fresh water expansion tanks QB021 and QB024 are connected to the suction side of the low-temperature cooling fresh water pump to accommodate the volume change of the cooling water in the system and maintain the stable system pressure.

[0040] Residential area cooling water supply circuit:

[0041] As Figure 3 shown, two fresh water booster pumps QB073 and QB075 are arranged in parallel, leading a branch from the engine room cooling water circulation circuit, boosting the cooling water and then transporting it to the residential area.

[0042] The residential area equipment includes: air conditioning equipment QB070 and QB072, refrigeration equipment QB066 and QB068, and kitchen cabinet air conditioner QB060. The boosted cooling water flows through these equipment, takes away the heat and then returns to the engine room cooling water circulation circuit.

[0043] The bypass pipeline QB081 is used when the air conditioner is turned off, allowing the cooling water to bypass the residential area cooling water supply circuit and directly return to the engine room cooling water circulation circuit.

[0044] Waterfront cooling water connection:

[0045] The cooling water shore connection inlets QB217 and QB218 are located on DECK5 to introduce cooling water from the shore during docking in the shipyard; there are multiple cooling water shore connection outlets 700, preferably two, namely the left and right outlets, and there are multiple cooling water shore connection inlets 800, preferably two, namely the left and right outlets.

[0046] The cooling water shore connection outlet QB080 is used to discharge the cooling water on the ship.

[0047] In some specific embodiments, a green PCTC air conditioning, refrigeration and fresh water cooling system includes:

[0048] Engine room cooling water circulation part: The low-temperature cooling fresh water pump 100 is used to drive the circulation of cooling water in the engine room; the central cooler 200 is used to reduce the temperature of the cooling water; the degassing cylinder 300 is used to remove the gas in the system; the engine room water-using equipment 400 includes the dockworker's office cabinet air conditioner 401, the engine room centralized control room cabinet air conditioner 402, the machine repair shop cabinet air conditioner 403, and the frequency converter room cabinet air conditioner 404.

[0049] Residential area cooling water supply part: Fresh water booster pump 500: Located in the engine room, it draws a branch from the engine room cooling water circulation part to boost the cooling water; Residential area equipment 600: Located in the residential area, including air conditioning equipment 601, refrigeration equipment 602, and kitchen cabinet air conditioner 603. Among them, the fresh water booster pump 500 can include two, specifically including the first fresh water booster pump 501 and the second fresh water booster pump 502.

[0050] Working principle:

[0051] The low-temperature cooling fresh water pump 100 drives the cooling water to circulate in the engine room cooling water circulation part to provide cooling for the engine room water-using equipment 400; preferably, the low-temperature cooling fresh water pump 100 includes the first low-temperature cooling fresh water pump 101 and the second low-temperature cooling fresh water pump 102. After a part of the cooling water is boosted by the fresh water booster pump 500, it is transported to the residential area to provide cooling for the residential area equipment 600. The cooling water returned by the system is cooled by the central cooler 200 and then re-enters the circulation. The degassing cylinder 300 is used to remove the gas in the system. The cooling water shore connection can provide shore-based cooling water when in the dock.

[0052] Embodiment 2:

[0053] As Figure 2 shown, this system is mainly composed of three parts: the engine room cooling water circulation circuit, the residential area cooling water supply circuit, and the shore-based cooling water interface.

[0054] 1. Engine room cooling water circulation circuit:

[0055] The core component of this circuit is the low-temperature cooling fresh water pump. In this embodiment, two parallel low-temperature cooling fresh water pumps QB020 and QB023 are used to improve the reliability of the system, and one of them can operate as a standby pump. The suction ports of the low-temperature cooling fresh water pumps QB020 and QB023 are both connected to the outlet pipeline of the central cooler 200 to suck the cooled low-temperature fresh water from the central cooler. After the outlet pipelines of the low-temperature cooling fresh water pumps QB020 and QB023 converge, they are divided into two paths. One path is directly connected to the engine room water-using equipment, and the other path serves as the water supply pipeline for the residential area cooling water supply circuit.

[0056] The water-using equipment in the engine room includes: the cabinet air conditioner QB048 in the dockworker's office, the cabinet air conditioner QB050 in the engine room control room, the cabinet air conditioner QB054 in the machine repair shop, and the cabinet air conditioner QB056 in the frequency converter room. These water-using equipment in the engine room are connected in parallel to the outlet pipelines of the low-temperature cooling fresh water pumps QB020 and QB023. The cooling water flows through these equipment in sequence, absorbs heat, then converges into the return water main pipe, and finally flows back to the inlet of the central cooler 200.

[0057] In this embodiment, two central coolers 200 are arranged in parallel to enhance the cooling capacity and system redundancy. The function of the central cooler 200 is to cool down the high-temperature cooling water flowing back from the water-using equipment in the engine room and the residential area equipment to ensure that the circulating water temperature meets the system requirements.

[0058] The degassing cylinder QB112 is set at the highest point of the engine room cooling water circulation loop. As Figure 4 shown, the degassing cylinder 300 is connected to the cooling water circulation system through a pipeline, and a valve part QB112 is provided at its top. The function of the degassing cylinder QB112 is to discharge the gases generated during the operation of the system, such as air or water vapor, to improve the cooling efficiency and the stability of the system operation.

[0059] The low-temperature fresh water expansion tanks QB021 and QB024 are respectively connected to the suction side pipelines of the low-temperature cooling fresh water pumps QB020 and QB023. The low-temperature fresh water expansion tanks QB021 and QB024 are used to accommodate the volume expansion of the cooling water in the system due to temperature changes, maintain the stability of the system pressure, and prevent the system pressure from being too high or too low.

[0060] 2. Residential area cooling water supply loop:

[0061] The residential area cooling water supply loop is led out from the engine room cooling water circulation loop. On the outlet main pipe of the low-temperature cooling fresh water pumps QB020 and QB023, a branch pipeline is separated and connected to the fresh water booster pump. In this embodiment, the fresh water booster pumps adopt two QB073 and QB075 arranged in parallel, which is also to improve the system reliability and ensure the stable supply of the residential area cooling water. The functions of the fresh water booster pumps QB073 and QB075 are to increase the pressure of the cooling water to overcome the height difference and distance difference between the residential area and the engine room, and ensure that the cooling water can be smoothly transported to the residential area equipment.

[0062] The pressurized cooling water is transported to the residential area equipment through pipelines. The residential area equipment includes: air conditioning equipment QB070 and QB072, refrigeration equipment QB066 and QB068, and kitchen cabinet air conditioner QB060. These residential area equipment are connected in parallel to the outlet pipelines of fresh water booster pumps QB073 and QB075. The cooling water flows through these equipment in sequence, absorbs heat, then converges into the return water main pipe, and finally flows back to the engine room cooling water circulation loop for cooling at the central cooler 200.

[0063] To ensure the smooth circulation of the cooling water when the refrigeration equipment (such as air conditioners) in the residential area is turned off, the system is provided with a bypass pipeline QB081. The bypass pipeline QB081 is connected between the supply pipeline and the return pipeline of the residential area cooling water supply loop and is equipped with a valve (not marked in the figure). When the refrigeration equipment in the residential area does not require cooling water, the valve on the bypass pipeline QB081 can be opened to allow the cooling water to bypass the residential area equipment and directly return to the engine room cooling water circulation loop.

[0064] 3. Shore-based cooling water interface:

[0065] To facilitate the use of shore-based cooling water during the ship's docking in the dock, the system is provided with cooling water shore connection inlets QB217 and QB218, as well as left and right cooling water shore connection inlets 800. These shore connection inlets are located on the DECK5 layer of the ship, facilitating connection to the shore-based cooling water system to introduce shore-based cooling water for use in the ship's system.

[0066] Meanwhile, the system is also provided with cooling water shore connection outlets QB080 and left and right cooling water shore connection outlets 700 for discharging the ship's cooling water to the shore when needed.

[0067] Working principle:

[0068] The working principle of the green PCTC air conditioning refrigeration fresh water cooling system is as follows:

[0069] 1. Start the system: Start the low-temperature cooling fresh water pumps QB020 and / or QB023, and the cooling water begins to circulate in the engine room cooling water circulation loop.

[0070] 2. Cool the engine room equipment: The low-temperature cooling fresh water pumps transport the cooling water to the engine room water-using equipment QB048, QB050, QB054, and QB056. The cooling water absorbs the heat generated by the operation of these equipment and its own temperature rises.

[0071] 3. Cool the residential area equipment: A part of the cooling water is pressurized by the fresh water booster pumps QB073 and / or QB075 and then transported to the residential area equipment QB070, QB072, QB066, QB068, and QB060. The cooling water absorbs the heat generated by the operation of the residential area equipment and its temperature further rises.

[0072] 4. Cooling water temperature reduction: The high-temperature cooling water flowing back from the water-using equipment in the engine room and the accommodation equipment converges and then enters the central cooler 200. In the central cooler 200, the high-temperature cooling water exchanges heat with the cooling medium (such as seawater or chilled water), and its temperature is reduced to become low-temperature cooling water.

[0073] 5. Recirculation: The cooled low-temperature cooling water is sucked in again by the low-temperature cooling fresh water pumps QB020 and QB023 and is circulated and delivered to the water-using equipment in the engine room and the accommodation equipment. In this way, the cycle repeats to achieve continuous cooling of the equipment in the engine room and the accommodation.

[0074] 6. System pressure maintenance: The low-temperature fresh water expansion tanks QB021 and QB024 absorb the volume change of the cooling water in the system to maintain the stability of the system pressure.

[0075] 7. Gas discharge: The degassing cylinder QB112 automatically or manually discharges the accumulated gas in the system to ensure the operation efficiency of the system.

[0076] 8. Shore-based cooling water switching: When the ship is docked at the dock, shore-based cooling water can be introduced through the cooling water shore connection inlets QB217, QB218 and 800 to replace the on-board cooling water circulation system or as a supplementary cooling water source.

[0077] The green PCTC air-conditioning refrigerated fresh water cooling system provided by the present invention effectively solves the problem of insufficient cooling water pressure for the refrigeration equipment in the accommodation by adding a fresh water booster pump on the basis of the engine room cooling water circulation circuit. The system has a simple structure and is easy to implement, making full use of the resources of the engine room cooling water system, avoiding the complexity and cost of setting up a separate cooling system for the accommodation, improving the comfort of the accommodation, and having good system compatibility and green energy-saving effects.

[0078] The second aspect of the present invention further includes a ship, on which the air-conditioning refrigerated fresh water cooling system described in any one of the above is provided.

[0079] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements can be made without departing from the principle of the present invention, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A green PCTC air conditioning refrigeration fresh water cooling system, characterized in that: include: Low temperature cooling fresh water pump, installed in the engine room, used to provide cooling water for the system; A central cooler connected to the low-temperature cooling fresh water pump and used to reduce the temperature of the return cooling water; Engine room water equipment, which is arranged in the engine room and directly obtains cooling water through the low-temperature cooling fresh water pump; A fresh water booster pump is arranged in the engine room and connected to the outlet pipe of the low-temperature cooling fresh water pump to increase the cooling water pressure; and residential area equipment, which is arranged in the residential area and obtains pressurized cooling water through the fresh water booster pump.

2. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: There is a height difference and a distance difference between the living area and the cabin. The height difference between the living area and the cabin is 20-30 meters, and the distance difference is 70-90 meters.

3. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: The residential area equipment includes air conditioning equipment, refrigeration equipment and cabinet air conditioners.

4. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: The cabin water equipment includes cabinet air conditioners in the dock workers' office, cabinet air conditioners in the cabin control room, cabinet air conditioners in the machine repair room and cabinet air conditioners in the inverter room.

5. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: Also includes: Cooling water shore connector outlet, used to output cooling water on board to shore when in dock; The cooling water shore connector inlet is used to introduce cooling water from the shore for use on board when in the dock.

6. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: The fresh water booster pumps are two booster pumps arranged in parallel.

7. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: The system also includes a degassing cartridge, The degassing cylinder is connected to the cooling water circulation system and is used to discharge the gas inside the system; the degassing cylinder is arranged at the high point of the system and has a valve member for discharging the gas in the system.

8. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: It also includes a low-temperature fresh water expansion tank, which is arranged at one end of the low-temperature cooling fresh water pump and is used to receive excess low-temperature fresh water in the system.

9. The green PCTC air conditioning refrigeration fresh water cooling system according to claim 1 is characterized in that: There are at least two low-temperature cooling fresh water pumps.

10. A ship, characterized in that: The ship is provided with an air-conditioning, refrigeration and fresh water cooling system as described in any one of claims 1 to 9.

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