Ship heat supply system

Abstract

The invention provides a ship heat supply system which comprises a main heat source unit, a water consumption unit and a control unit, the main heat source unit comprises a first electric heating part, and the first electric heating part is used for heating a heat source medium in the main heat source unit; the water consumption unit at least comprises a daily water consumption part and an air conditioner water consumption part; the control unit is in control connection with the heat supply water segregator, and the different branch outlets are controlled to be opened and closed according to different heat supply requirements so that the heat source medium can enter a preset pipeline of the water consumption unit. According to the system, electric heating and intelligent control are adopted for air conditioning, heating and living daily hot water of the ship, sufficient electric power on the ship is effectively used as a heat source, complex steam system pipelines brought by a steam heat source are reduced, and more available space is provided for living and working areas. The risk of steam leakage can be avoided, the load change can be quickly responded through the control unit, and the energy loss is reduced. Therefore, the system has the advantages of safety, economy, adaptability and energy efficiency, and is beneficial to popularization and application.

Description

Technical Field

[0001] This application relates to the field of shipbuilding technology, and more specifically, to a ship heating system. Background Technology

[0002] During ship navigation and operation, water for crew living, equipment cleaning, winter cabin heating, and heat tracing of some equipment all require a stable heat source. This is one of the key systems to ensure the normal operation of the ship and the comfort of the crew.

[0003] Traditional ships, especially medium and large cargo ships and older ships, generally use steam generated by boilers as the core heat source. Although using steam as a heat source can meet basic heating needs, it has revealed many unavoidable technical drawbacks in long-term practical application and has gradually become unsuitable for modern ships.

[0004] The core medium of a steam heating system is high-temperature, high-pressure steam. To ensure heating efficiency, the steam temperature generated by the boiler is typically no lower than 150℃, and the pressure can reach 0.8-1.2MPa. Especially for some ships, the steam temperature exceeds 300℃ and the pressure exceeds 3.5MPa, placing extremely high demands on the pressure-bearing capacity and sealing performance of the system's pipelines and valves. Ships inevitably experience vibrations and rolling during navigation, such as vibrations from main engine operation and wave impacts, with roll angles exceeding 30° and pitch angles exceeding 10°. Long-term alternating vibration loads can easily lead to aging and failure of pipeline interface seals, fatigue cracking of pipeline welds, and consequently, steam leakage. Leaking high-temperature steam can not only scald crew members, causing direct personal injury accidents, but may also cause surrounding electrical equipment, such as control boxes and sensors, to become damp and short-circuit, even posing a fire risk. Simultaneously, steam leakage causes a sudden drop in system pressure, requiring frequent boiler start-ups and shutdowns to replenish pressure, further aggravating equipment wear and tear, creating a vicious cycle of leakage-pressure replenishment-loss.

[0005] To meet the demands of high-temperature, high-pressure steam transmission and usage, steam heating systems require specialized high-temperature, high-pressure resistant pipes and valves, resulting in material costs far exceeding those of conventional water supply and drainage pipelines. Furthermore, the system necessitates additional safety control components such as safety valves, pressure gauges, and steam traps, as well as steam desuperheating and pressure-reducing devices to lower the high-temperature, high-pressure steam to the required medium-to-low temperature levels for daily use. This leads to a complex overall system structure, cumbersome installation procedures, and high construction costs. Moreover, during maintenance, the scouring and corrosion of pipelines by steam necessitates regular rust removal, flaw detection, and seal replacement. Maintenance requires shutting down the heating system, increasing maintenance time and costs, disrupting crew life, and affecting equipment heating needs, ultimately reducing ship operational efficiency.

[0006] In summary, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0007] The purpose of this application is to provide a ship heating system that can make full use of electric heating as a heat source, which is both safe and reliable, as well as flexible and convenient.

[0008] This application provides a ship heating system, including:

[0009] The main heat source unit includes a first electric heating section and a first circulating pump. The first electric heating section is used to heat the heat source medium in the main heat source unit, and the first circulating pump is used to provide power to output the heated heat source medium.

[0010] The heating manifold, connected to the main heat source unit, includes multiple branch outlets to output the heat source medium to predetermined pipelines respectively.

[0011] A water-using unit is connected to the heating water distributor, and the water-using unit includes at least a daily water-using section and an air-conditioning water-using section. The daily water-using section and the air-conditioning water-using section are respectively connected to branch outlets of the heating water distributor.

[0012] A heating water collector is provided, with its inlet connected to the outlet of the water-using unit. The heating water collector is used to return the water flowing out of the water-using unit to the main heat source unit under the action of the heat source circulation pump, so as to form a circulating water circuit and ensure that the water-using unit can use hot water without interruption.

[0013] The control unit is connected to the heating manifold and controls the opening and closing of different branch outlets according to different heating demands, so that the heat source medium enters the predetermined pipeline of the water unit.

[0014] In one feasible embodiment, the daily water supply unit includes a first heat exchange unit, into which the heat source medium of the main heat source unit flows to complete heat exchange.

[0015] In one feasible embodiment, the air conditioning water unit includes a second heat exchange unit, into which the heat source medium of the main heat source unit flows to complete heat exchange.

[0016] In one feasible embodiment, a second electric heating unit is provided within the first heat exchange section. When both the air conditioning water section and the daily water section have heating needs simultaneously, the first electric heating unit and the second electric heating unit heat simultaneously. When only the daily water section has heating needs, the second electric heating unit is activated to heat the second heat exchange section.

[0017] In one feasible embodiment, the first electric heating unit includes multiple sets of heating components, which can be started and stopped independently.

[0018] In one feasible approach, the heating temperature of the daily water supply unit is set to a first set temperature, and the heating temperature of the air conditioning water supply unit is set to a second set temperature.

[0019] When only the daily water supply unit has a heating demand, if the outlet water temperature of the daily water supply unit is lower than the first set temperature, the control system controls the activation of one or more heating components in the first electric heating unit.

[0020] In one feasible embodiment, the daily water supply section includes a bow daily water supply pipeline and a stern daily water supply pipeline. Both the bow and stern daily water supply pipelines exchange heat with a heat source medium within a first heat exchange section. The bow and stern daily water supply pipelines supply hot water to the bow and stern of the ship, respectively.

[0021] In one feasible embodiment, the first heat exchange unit includes a first heat medium pipeline and a daily water supply pipeline. The inlet of the first heat medium pipeline is equipped with a No. 1 three-way valve, which includes a first inlet, a second inlet, and an outlet. The first inlet is used to introduce the heat source medium flowing out of the main heat source unit. The outlet is connected to the inlet of the first heat medium pipeline to transport the heat source medium into the first heat exchange unit. The outlet of the first heat medium pipeline is connected to the second inlet. The outlet of the first heat medium pipeline is also equipped with a first temperature sensor. When the first temperature sensor detects that the temperature of the heat source medium flowing out of the first heat medium pipeline is greater than a first set temperature, the heat source medium flows back into the first heat exchange unit through the second inlet to continue heat exchange.

[0022] In one feasible embodiment, the second heat exchange unit includes a second heat medium pipeline and an air conditioning water pipeline. A No. 2 three-way valve is installed at the inlet of the second heat medium pipeline. The No. 2 three-way valve includes a first inlet, a second inlet, and an outlet. The first inlet is used to introduce the heat source medium flowing out of the main heat source unit. The outlet is connected to the inlet of the second heat medium pipeline to transport the heat source medium into the second heat exchange unit. The outlet of the second heat medium pipeline is connected to the second inlet. A third temperature sensor is also installed at the outlet of the second heat medium pipeline. When the third temperature sensor detects that the temperature of the heat source medium flowing out of the second heat medium pipeline is greater than a second set temperature, the heat source medium flows back into the second heat exchange unit through the second inlet to continue heat exchange.

[0023] In one feasible embodiment, a water replenishment unit is also included, which at least comprises a water pressure gauge, an expansion tank, and a freshwater supply pipeline. The water replenishment unit is used to replenish the heat source medium to the main heat source unit.

[0024] Compared with the prior art, the beneficial effects of this application are as follows:

[0025] The technical solution of this application achieves electric heating and intelligent control for the ship's air conditioning, heating, and domestic hot water, effectively utilizing the ship's abundant electricity as a heat source, reducing the complexity of steam system piping caused by steam heat sources, and providing more usable space for living and working areas. It not only avoids the risk of steam leakage but also allows for rapid response to load changes through the control unit, reducing energy consumption. Therefore, this application possesses safety, economy, adaptability, and energy efficiency, making it suitable for widespread use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the piping of a ship heating system according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the piping of the main heat source unit in the ship heating system according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the pipeline of the daily water supply section in the ship heating system of this invention.

[0029] Figure 4 This is a schematic diagram of the piping of the first heat exchange section in the ship heating system according to an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the piping of the second heat exchange section in the ship heating system of this invention.

[0031] The reference numerals in the attached figures are explained as follows:

[0032] 1. Main heat source unit; 101. First heating component; 102. Second heating component; 2. First circulating pump; 3. Heating water distributor; 4. Daily water supply unit; 401. Bow daily water supply pipeline; 402. Stern daily water supply pipeline; 5. Air conditioning water supply unit; 6. Heating water collector; 7. Second circulating pump; 8. Water pressure gauge; 9. Expansion tank; 10. First heat exchange unit; 11. No. 1 three-way valve; 12. Second heat medium pipeline; 13. First heat medium pipeline; 14. Second heat exchange unit; 15. No. 2 three-way valve; 16. First temperature sensor; 17. Second temperature sensor; 18. Third temperature sensor. Detailed Implementation

[0033] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] See Figures 1 to 5 This application provides a ship heating system, comprising:

[0038] The main heat source unit 1 includes a first electric heating section and a first circulating pump 2. The first electric heating section is used to heat the heat source medium in the main heat source unit 1, and the first circulating pump 2 is used to provide power to output the heated heat source medium.

[0039] It should be noted that in this embodiment, three first circulating pumps 2 are set, of which two are in normal use and one is a backup, to ensure the normal delivery of the heat source medium.

[0040] The heating manifold 3 is connected to the main heat source unit 1 and includes multiple branch outlets to output the heat source medium to predetermined pipelines respectively.

[0041] A water-using unit is connected to the heating water distributor 3. The water-using unit includes at least a daily water-using section 4 and an air-conditioning water-using section 5. The daily water-using section 4 and the air-conditioning water-using section 5 are respectively connected to the branch outlets of the heating water distributor 3.

[0042] It should be noted that the scope of use of the water-using unit includes, but is not limited to, daily use, air conditioning, heating, and showering.

[0043] The heating water collector 6 has its inlet connected to the outlet of the water-using unit. The heating water collector 6 is used to return the return water flowing out of the water-using unit to the main heat source unit 1 under the action of the heat source circulation pump, so as to form a circulating water circuit and ensure that the water-using unit can use hot water without interruption.

[0044] The control unit is connected to the heating manifold 3 and controls the opening and closing of different branch outlets according to different heating needs, so that the heat source medium enters the predetermined pipeline of the water unit.

[0045] In one feasible embodiment, the daily water supply unit 4 includes a first heat exchange unit 10, into which the heat source medium of the main heat source unit 1 flows to complete heat exchange.

[0046] In one feasible embodiment, the air conditioning water unit 5 includes a second heat exchange unit 14, into which the heat source medium of the main heat source unit 1 flows to complete heat exchange.

[0047] It should be noted that during periods of high heat demand, such as winter, the control unit controls the heating water distributor 3 to open the branch where the air conditioning water section 5 is located and the branch where the daily water section 4 is located, so that the heat source medium in the main heat source unit 1 flows to the first heat exchange section 10 and the second heat exchange section 14 respectively to complete heat exchange.

[0048] In one feasible embodiment, a second electric heating unit is provided within the first heat exchange section 10. During periods of high heat demand, i.e., when both the air conditioning water section 5 and the daily water section 4 have heating needs simultaneously, the first and second electric heating units operate simultaneously to meet the ship's domestic water needs. When heat demand is low, i.e., when the air conditioning water section 5 has no heating needs, the control system controls the main heat source unit 1 to stop operating. At this time, the second electric heating unit heats the second heat exchange section 14 and completes the heating process.

[0049] In one feasible embodiment, the first electric heating unit includes multiple sets of heating components, which can be started and stopped independently. The control unit controls the start and stop of one or more heating components respectively, so as to avoid the heating components in the main heat source unit 1 from being turned on at the same time, which would cause damage due to excessive power.

[0050] like Figure 2 As shown, in this embodiment, the first electric heating part includes a first heating component 101 and a second heating component 102.

[0051] In this embodiment, the heating temperature of the daily water supply unit 4 is set to 60°C, and the heating temperature of the air conditioning water supply unit 5 is set to 55°C.

[0052] When only the daily water supply unit 4 has a heating demand, if the heating temperature of the daily water supply unit 4 is lower than 60°C, that is, when the second electric heating unit cannot meet the water demand of the daily water supply unit 4, the control system controls to turn on one or more heating components of the first electric heating unit. The number of heating components of the first electric heating unit is controlled according to the specific temperature, which reduces the waste of thermal energy and ensures the heating demand of the daily water supply unit 4.

[0053] In one feasible approach, such as Figure 3 and Figure 4 As shown, the first heat exchange section 10 includes a first heat medium pipeline 13 and a daily water supply pipeline. A three-way valve 11 is installed at the inlet of the first heat medium pipeline 13. The three-way valve 11 includes a first inlet, a second inlet, and an outlet. The first inlet is used to introduce the heat source medium flowing out of the main heat source unit 1. The outlet is connected to the inlet of the first heat medium pipeline 13 to transport the heat source medium into the first heat exchange section 10. The outlet of the first heat medium pipeline 13 is connected to the second inlet. A first temperature sensor 16 is also installed at the outlet of the first heat medium pipeline 13. When the first temperature sensor 16 detects that the temperature of the heat source medium flowing out of the first heat medium pipeline 13 is greater than 60°C, the heat source medium flows back into the first heat exchange section 10 through the second inlet to continue heat exchange.

[0054] In one feasible approach, such as Figure 3 As shown, the daily water supply pipeline includes a bow daily water supply pipeline 401 and a stern daily water supply pipeline 402. Both the bow daily water supply pipeline 401 and the stern daily water supply pipeline 402 exchange heat with the first heat medium pipeline 13 within the first heat exchange section 10. The bow daily water supply pipeline 401 and the stern daily water supply pipeline 402 supply hot water to the bow and stern of the ship, respectively.

[0055] A second circulation pump 7 is respectively installed on the bow daily water pipe 401 and the stern daily water pipe 402. The second circulation pump 7 accelerates the flow of hot water after heat exchange in the bow daily water pipe 401 or the stern daily water pipe 402, so as to maintain a continuous and uninterrupted supply of hot water.

[0056] Specifically, a second temperature detection element 17 is installed on either the bow daily water pipe 401 or the stern daily water pipe 402. When the second temperature detection element 17 detects that the temperature of the domestic hot water is lower than 60°C, it indicates that the second electric heating unit cannot meet the water demand of the daily water unit 4. The control system controls the activation of one or more heating components of the first electric heating unit and controls the number of heating components of the first electric heating unit according to the specific temperature to maintain the domestic hot water temperature at 60°C.

[0057] In one feasible approach, such as Figure 5 As shown, the second heat exchange section 14 includes a second heat medium pipeline 12 and an air conditioning water pipeline. A No. 2 three-way valve 15 is installed at the inlet of the second heat medium pipeline 12. The No. 2 three-way valve 15 includes a first inlet, a second inlet, and an outlet. The first inlet is used to introduce the heat source medium flowing out of the main heat source unit 1. The outlet is connected to the inlet of the second heat medium pipeline 12 and is used to transport the heat source medium into the second heat exchange section 14. The outlet of the second heat medium pipeline 12 is connected to the second inlet. A third temperature detection element 18 is also installed at the outlet of the second heat medium pipeline 12. When the third temperature detection element 18 detects that the temperature of the heat source medium flowing out of the second heat medium pipeline 12 is greater than 55°C, the heat source medium flows back into the second heat exchange section 14 through the second inlet to continue heat exchange.

[0058] In one feasible approach, such as Figure 1 As shown, the heating system also includes a water replenishment unit, which includes at least a water pressure gauge 8, an expansion tank 9, and a fresh water supply pipeline; the water replenishment unit is used to replenish the heat source medium to the main heat source unit 1.

[0059] Specifically, a water pressure gauge 8 is connected to the heating water collector 6, which is used to detect the water pressure inside the heating water collector 6. An expansion tank 9 is connected to the heating water collector 6, and the inlet of the expansion tank 9 is connected to a fresh water supply pipeline. A solenoid valve is installed at the outlet of the fresh water supply pipeline. The expansion tank 9 is used to replenish fresh water to the heating water collector 6. Considering that the heating system of this application is a closed-loop system, the water pressure inside the heating water collector 6 represents the overall water pressure of the heating system. Sometimes, due to leaks in pipeline valves, etc., when the water pressure measured by the water pressure gauge 8 is lower than the predetermined water pressure, the control unit controls the opening of the solenoid valve to replenish water to the expansion tank 9. When air is mixed into the pipeline of this system, the heat source medium in the pipeline of this system automatically flows into the expansion tank 9 for storage. When the liquid level in the expansion tank 9 exceeds the storage limit, the excess heat source medium is discharged through the overflow pipe of the expansion tank 9. Through the setting of the water replenishment unit, the pipeline pressure of this system is kept within a suitable range.

[0060] In one feasible embodiment, the outlet water temperature of the main heat source unit 1 is set to 80°C. If the outlet water temperature of the main heat source unit 1 exceeds 80°C for a predetermined time, the control unit shuts down one group of heating components in the first electric heating section. If the outlet water temperature of the main heat source unit 1 remains above 80°C, one group of heating components continues to be shut down until the outlet water temperature stabilizes at 80°C. The system can automatically set a time limit for the temperature to remain above the set value; if this time is exceeded, the system automatically stops the heating components one group at a time to maintain a dynamically constant outlet water temperature for the main heat source unit 1.

[0061] In summary, this application enables the ship's air conditioning, heating, and domestic hot water to all utilize electric heating with intelligent control. It effectively utilizes the ship's abundant electricity as a heat source, reduces the complexity of steam system piping associated with steam heat sources, and provides more usable space in living and working areas. It not only avoids the risk of steam leakage but also allows for rapid response to load changes through the control unit, reducing energy consumption. Therefore, this application possesses safety, economy, adaptability, and energy efficiency, making it suitable for widespread use.

[0062] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A ship heating system, characterized in that, include: The main heat source unit includes a first electric heating section and a first circulating pump. The first electric heating section is used to heat the heat source medium in the main heat source unit, and the first circulating pump is used to provide power to output the heated heat source medium. A heating manifold, connected to the main heat source unit, includes multiple branch outlets to output the heat source medium to predetermined pipelines respectively; A water-using unit is connected to the heating water distributor, and the water-using unit includes at least a daily water-using section and an air-conditioning water-using section; the daily water-using section and the air-conditioning water-using section are respectively connected to the branch outlets of the heating water distributor; A heating water collector is provided, with its inlet connected to the outlet of the water-using unit. The heating water collector is used to return the water flowing out of the water-using unit to the main heat source unit under the action of the heat source circulation pump, so as to form a circulating water circuit and ensure that the water-using unit can use hot water without interruption. The control unit is connected to the heating manifold and controls the opening and closing of different branch outlets according to different heating demands, so that the heat source medium enters the predetermined pipeline of the water unit.

2. The ship heating system according to claim 1, characterized in that, The daily water supply unit includes a first heat exchange unit, and the heat source medium of the main heat source unit flows into the first heat exchange unit to complete heat exchange.

3. The ship heating system according to claim 2, characterized in that, The air conditioning water unit includes a second heat exchange unit, and the heat source medium of the main heat source unit flows into the second heat exchange unit to complete the heat exchange.

4. The ship heating system according to claim 3, characterized in that, The first heat exchange section is provided with a second electric heating section. When both the air conditioning water section and the daily water section have heating needs, the first electric heating section and the second electric heating section heat simultaneously. When only the daily water section has heating needs, the second electric heating section is turned on to heat the second heat exchange section.

5. The ship heating system according to claim 3, characterized in that, The first electric heating unit includes multiple sets of heating components, which can be started and stopped independently.

6. The ship heating system according to claim 5, characterized in that, The heating temperature for the daily water supply is set to the first set temperature, and the heating temperature for the air conditioning water supply is set to the second set temperature. When only the daily water supply unit has a heating demand, if the outlet water temperature of the daily water supply unit is lower than the first set temperature, the control system controls the activation of one or more heating components in the first electric heating unit.

7. The ship heating system according to claim 1, characterized in that, The daily water supply section includes a bow daily water supply pipeline and a stern daily water supply pipeline. Both the bow and stern daily water supply pipelines exchange heat with the heat source medium in the first heat exchange section. The bow and stern daily water supply pipelines supply hot water to the bow and stern of the ship, respectively.

8. The ship heating system according to claim 6, characterized in that, The first heat exchange section includes a first heat medium pipeline and a daily water supply pipeline. The inlet of the first heat medium pipeline is equipped with a No. 1 three-way valve, which includes a first inlet, a second inlet, and an outlet. The first inlet is used to introduce the heat source medium flowing out of the main heat source unit. The outlet is connected to the inlet of the first heat medium pipeline and is used to transport the heat source medium into the first heat exchange section. The outlet of the first heat medium pipeline is connected to the second inlet. The outlet of the first heat medium pipeline is also equipped with a first temperature detection device. When the first temperature detection device detects that the temperature of the heat source medium flowing out of the first heat medium pipeline is greater than a first set temperature, the heat source medium flows back into the first heat exchange section through the second inlet to continue heat exchange.

9. The ship heating system according to claim 6, characterized in that, The second heat exchange section includes a second heat medium pipeline and an air conditioning water pipeline. A No. 2 three-way valve is installed at the inlet of the second heat medium pipeline. The No. 2 three-way valve includes a first inlet, a second inlet, and an outlet. The first inlet is used to introduce the heat source medium flowing out of the main heat source unit. The outlet is connected to the inlet of the second heat medium pipeline and is used to transport the heat source medium into the second heat exchange section. The outlet of the second heat medium pipeline is connected to the second inlet. The outlet of the second heat medium pipeline is also equipped with a third temperature detection device. When the third temperature detection device detects that the temperature of the heat source medium flowing out of the second heat medium pipeline is greater than the second set temperature, the heat source medium flows back to the second heat exchange section through the second inlet to continue heat exchange.

10. The ship heating system according to claim 1, characterized in that, It also includes a water replenishment unit, which includes at least a water pressure gauge, an expansion tank, and a fresh water supply pipeline; the water replenishment unit is used to replenish the heat source medium to the main heat source unit.

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